diff --git a/bootstrap/Compilation.zig b/bootstrap/Compilation.zig index 2587826..ff3f5f7 100644 --- a/bootstrap/Compilation.zig +++ b/bootstrap/Compilation.zig @@ -166,7 +166,7 @@ const MuslContext = struct { } }; -const CSourceKind = enum{ +const CSourceKind = enum { c, cpp, }; @@ -264,16 +264,40 @@ pub fn compileCSourceFile(context: *const Context, arguments: [][*:0]u8, kind: C try clang_args.append(context.my_allocator, context.executable_absolute_path); try clang_args.append(context.my_allocator, "clang"); + if (kind == .cpp) { + try clang_args.append(context.my_allocator, "-nostdinc++"); + + try clang_args.append_slice(context.my_allocator, &.{ + "-isystem", try context.pathFromCompiler("lib/libcxx/include"), + "-isystem", try context.pathFromCompiler("lib/libcxxabi/include"), + "-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS", + "-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS", + "-D_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS", + "-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL", + "-D_LIBCPP_ABI_VERSION=1", + "-D_LIBCPP_ABI_NAMESPACE=__1", + }); + switch (@import("builtin").os.tag) { + .linux => {}, + .macos => {}, + else => @compileError("Operating system not supported"), + } + } + if (kind == .c or kind == .cpp) { try clang_args.append(context.my_allocator, "-nostdinc"); switch (@import("builtin").os.tag) { .linux => { - try clang_args.append_slice(context.my_allocator, &.{ "-isystem", "/home/david/dev/zig/lib/include", "-isystem", "/home/david/dev/zig/lib/libc/include/x86_64-linux-gnu", "-isystem", "/home/david/dev/zig/lib/libc/include/generic-glibc", "-isystem", "/home/david/dev/zig/lib/libc/include/x86-linux-any", "-isystem", "/home/david/dev/zig/lib/libc/include/any-linux-any" }); - try clang_args.append(context.my_allocator, "-isystem"); - try clang_args.append(context.my_allocator, "/usr/include"); - try clang_args.append(context.my_allocator, "-isystem"); - try clang_args.append(context.my_allocator, "/usr/include/linux"); + try clang_args.append_slice(context.my_allocator, &.{ + "-isystem", try context.pathFromCompiler("lib/include"), + "-isystem", try context.pathFromCompiler("lib/libc/include/x86_64-linux-gnu"), + "-isystem", try context.pathFromCompiler("lib/libc/include/generic-glibc"), + "-isystem", try context.pathFromCompiler("lib/libc/include/x86-linux-any"), + "-isystem", try context.pathFromCompiler("lib/libc/include/any-linux-any"), + "-isystem", "/usr/include", + "-isystem", "/usr/include/linux", + }); }, .macos => { try clang_args.append_slice(context.my_allocator, &.{ @@ -286,21 +310,6 @@ pub fn compileCSourceFile(context: *const Context, arguments: [][*:0]u8, kind: C } } - if (kind == .cpp) { - try clang_args.append(context.my_allocator, "-nostdinc++"); - switch (@import("builtin").os.tag) { - .linux => { - }, - .macos => { - try clang_args.append_slice(context.my_allocator, &.{ - "-isystem", try context.pathFromCompiler("lib/libcxx/include"), - "-isystem", try context.pathFromCompiler("lib/libcxxabi/include"), - }); - }, - else => @compileError("Operating system not supported"), - } - } - for (arguments) |arg| { try clang_args.append(context.my_allocator, span(arg)); } @@ -2973,7 +2982,7 @@ pub const Instruction = union(enum) { trap, @"unreachable", - const Memcpy = struct{ + const Memcpy = struct { destination: V, source: V, destination_alignment: ?u32, @@ -6533,7 +6542,7 @@ pub const Builder = struct { for (0..array.count) |_| { const element_classes = builder.classify_systemv_x86_64(unit, context, array.type, offset); offset += element_size; - const merge_result = [2]Class_SystemVx86_64{Class_SystemVx86_64.merge(result[0], element_classes[0]), Class_SystemVx86_64.merge(result[1], element_classes[1])}; + const merge_result = [2]Class_SystemVx86_64{ Class_SystemVx86_64.merge(result[0], element_classes[0]), Class_SystemVx86_64.merge(result[1], element_classes[1]) }; result = merge_result; if (result[0] == .memory or result[1] == .memory) { break; @@ -6890,7 +6899,7 @@ pub const Builder = struct { .pointer = pointer_type, .alignment = alignment, }, - }, + }, .attributes = .{ .by_value = true, }, @@ -11576,7 +11585,7 @@ pub const Builder = struct { .destination = argument_alloca, .source = argument_value, }, - }); + }); try builder.appendInstruction(unit, context, store); const target_type = unit.types.get(coerced_type_index); @@ -11595,7 +11604,7 @@ pub const Builder = struct { .value = argument_alloca, .type = coerced_type_index, }, - }); + }); try builder.appendInstruction(unit, context, load); argument_list.append_with_capacity(V{ @@ -11634,7 +11643,7 @@ pub const Builder = struct { .type = coerced_type_index, .alignment = alignment, }, - }); + }); try builder.appendInstruction(unit, context, load); argument_list.append_with_capacity(V{ @@ -11730,11 +11739,10 @@ pub const Builder = struct { .destination = coerced_pointer, .source = argument_value, }, - }); + }); try builder.appendInstruction(unit, context, coerced_store); break :b coerced_pointer; - } else b: { const pointer_type = try unit.getPointerType(context, .{ .type = argument_type_index, @@ -11756,7 +11764,7 @@ pub const Builder = struct { .destination = argument_alloca, .source = argument_value, }, - }); + }); try builder.appendInstruction(unit, context, store); break :b argument_alloca; @@ -11772,12 +11780,12 @@ pub const Builder = struct { .constant_int = .{ .value = 0, }, - }, }, - .type = .u32, }, - }, - }); + .type = .u32, + }, + }, + }); try builder.appendInstruction(unit, context, gep0); const load0 = try unit.instructions.append(context.my_allocator, .{ @@ -11796,7 +11804,7 @@ pub const Builder = struct { }, .type = pair[0], }, - }); + }); try builder.appendInstruction(unit, context, load0); const gep1 = try unit.instructions.append(context.my_allocator, .{ @@ -11810,12 +11818,12 @@ pub const Builder = struct { .constant_int = .{ .value = 1, }, - }, }, - .type = .u32, }, - }, - }); + .type = .u32, + }, + }, + }); try builder.appendInstruction(unit, context, gep1); const load1 = try unit.instructions.append(context.my_allocator, .{ @@ -11834,10 +11842,9 @@ pub const Builder = struct { }, .type = pair[1], }, - }); + }); try builder.appendInstruction(unit, context, load1); - argument_list.append_with_capacity(V{ .value = .{ .runtime = load0, @@ -14014,7 +14021,7 @@ pub const Builder = struct { .type = struct_type_index, .alignment = alignment, }, - }); + }); try builder.appendInstruction(unit, context, load); break :b V{ @@ -15091,8 +15098,11 @@ pub const Unit = struct { const dot_index = data_structures.last(c_src, '.') orelse unreachable; const path_without_extension = c_src[0..dot_index]; const basename = std.fs.path.basename(path_without_extension); - const o_file = try std.mem.concat(context.allocator, u8, &.{ basename, ".o"}); - const basename_z = try std.mem.joinZ(context.allocator, "/", &.{ "nat", o_file, }); + const o_file = try std.mem.concat(context.allocator, u8, &.{ basename, ".o" }); + const basename_z = try std.mem.joinZ(context.allocator, "/", &.{ + "nat", + o_file, + }); var c_flag = "-c".*; var o_flag = "-o".*; var g_flag = "-g".*; diff --git a/lib/libcxx/LICENSE.TXT b/lib/libcxx/LICENSE.TXT new file mode 100644 index 0000000..e159d28 --- /dev/null +++ b/lib/libcxx/LICENSE.TXT @@ -0,0 +1,311 @@ +============================================================================== +The LLVM Project is under the Apache License v2.0 with LLVM Exceptions: +============================================================================== + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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+ _Iter __i = __first; + while (++__i != __last) { + if (__pred(*__first, *__i)) + return __first; + __first = __i; + } + return __i; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { + return std::__adjacent_find(std::move(__first), std::move(__last), __pred); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +adjacent_find(_ForwardIterator __first, _ForwardIterator __last) { + return std::adjacent_find(std::move(__first), std::move(__last), __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_ADJACENT_FIND_H diff --git a/lib/libcxx/include/__algorithm/all_of.h b/lib/libcxx/include/__algorithm/all_of.h new file mode 100644 index 0000000..237f849 --- /dev/null +++ b/lib/libcxx/include/__algorithm/all_of.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ALL_OF_H +#define _LIBCPP___ALGORITHM_ALL_OF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +all_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + for (; __first != __last; ++__first) + if (!__pred(*__first)) + return false; + return true; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_ALL_OF_H diff --git a/lib/libcxx/include/__algorithm/any_of.h b/lib/libcxx/include/__algorithm/any_of.h new file mode 100644 index 0000000..fe08828 --- /dev/null +++ b/lib/libcxx/include/__algorithm/any_of.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ANY_OF_H +#define _LIBCPP___ALGORITHM_ANY_OF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +any_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + for (; __first != __last; ++__first) + if (__pred(*__first)) + return true; + return false; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_ANY_OF_H diff --git a/lib/libcxx/include/__algorithm/binary_search.h b/lib/libcxx/include/__algorithm/binary_search.h new file mode 100644 index 0000000..0c8f554 --- /dev/null +++ b/lib/libcxx/include/__algorithm/binary_search.h @@ -0,0 +1,45 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_BINARY_SEARCH_H +#define _LIBCPP___ALGORITHM_BINARY_SEARCH_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/lower_bound.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) +{ + __first = std::lower_bound<_ForwardIterator, _Tp, __comp_ref_type<_Compare> >(__first, __last, __value, __comp); + return __first != __last && !__comp(__value, *__first); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) +{ + return std::binary_search(__first, __last, __value, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H diff --git a/lib/libcxx/include/__algorithm/clamp.h b/lib/libcxx/include/__algorithm/clamp.h new file mode 100644 index 0000000..31deb4f --- /dev/null +++ b/lib/libcxx/include/__algorithm/clamp.h @@ -0,0 +1,46 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_CLAMP_H +#define _LIBCPP___ALGORITHM_CLAMP_H + +#include <__algorithm/comp.h> +#include <__assert> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY constexpr +const _Tp& +clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp) +{ + _LIBCPP_ASSERT_UNCATEGORIZED(!__comp(__hi, __lo), "Bad bounds passed to std::clamp"); + return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v; + +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY constexpr +const _Tp& +clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi) +{ + return _VSTD::clamp(__v, __lo, __hi, __less<>()); +} +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_CLAMP_H diff --git a/lib/libcxx/include/__algorithm/comp.h b/lib/libcxx/include/__algorithm/comp.h new file mode 100644 index 0000000..9474536 --- /dev/null +++ b/lib/libcxx/include/__algorithm/comp.h @@ -0,0 +1,47 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COMP_H +#define _LIBCPP___ALGORITHM_COMP_H + +#include <__config> +#include <__type_traits/integral_constant.h> +#include <__type_traits/predicate_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +struct __equal_to { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _T1& __x, const _T2& __y) const { + return __x == __y; + } +}; + +template +struct __is_trivial_equality_predicate<__equal_to, _Lhs, _Rhs> : true_type {}; + +// The definition is required because __less is part of the ABI, but it's empty +// because all comparisons should be transparent. +template +struct __less {}; + +template <> +struct __less { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp& __lhs, const _Up& __rhs) const { + return __lhs < __rhs; + } +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COMP_H diff --git a/lib/libcxx/include/__algorithm/comp_ref_type.h b/lib/libcxx/include/__algorithm/comp_ref_type.h new file mode 100644 index 0000000..d16bd0f --- /dev/null +++ b/lib/libcxx/include/__algorithm/comp_ref_type.h @@ -0,0 +1,78 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COMP_REF_TYPE_H +#define _LIBCPP___ALGORITHM_COMP_REF_TYPE_H + +#include <__assert> +#include <__config> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __debug_less +{ + _Compare &__comp_; + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI __debug_less(_Compare& __c) : __comp_(__c) {} + + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI + bool operator()(const _Tp& __x, const _Up& __y) + { + bool __r = __comp_(__x, __y); + if (__r) + __do_compare_assert(0, __y, __x); + return __r; + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI + bool operator()(_Tp& __x, _Up& __y) + { + bool __r = __comp_(__x, __y); + if (__r) + __do_compare_assert(0, __y, __x); + return __r; + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 + inline _LIBCPP_INLINE_VISIBILITY + decltype((void)std::declval<_Compare&>()( + std::declval<_LHS &>(), std::declval<_RHS &>())) + __do_compare_assert(int, _LHS & __l, _RHS & __r) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__comp_(__l, __r), + "Comparator does not induce a strict weak ordering"); + (void)__l; + (void)__r; + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 + inline _LIBCPP_INLINE_VISIBILITY + void __do_compare_assert(long, _LHS &, _RHS &) {} +}; + +// Pass the comparator by lvalue reference. Or in debug mode, using a +// debugging wrapper that stores a reference. +#if _LIBCPP_ENABLE_DEBUG_MODE +template +using __comp_ref_type = __debug_less<_Comp>; +#else +template +using __comp_ref_type = _Comp&; +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COMP_REF_TYPE_H diff --git a/lib/libcxx/include/__algorithm/copy.h b/lib/libcxx/include/__algorithm/copy.h new file mode 100644 index 0000000..dfe9898 --- /dev/null +++ b/lib/libcxx/include/__algorithm/copy.h @@ -0,0 +1,124 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COPY_H +#define _LIBCPP___ALGORITHM_COPY_H + +#include <__algorithm/copy_move_common.h> +#include <__algorithm/for_each_segment.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min.h> +#include <__config> +#include <__iterator/segmented_iterator.h> +#include <__type_traits/common_type.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> __copy(_InIter, _Sent, _OutIter); + +template +struct __copy_loop { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + while (__first != __last) { + *__result = *__first; + ++__first; + ++__result; + } + + return std::make_pair(std::move(__first), std::move(__result)); + } + + template + struct _CopySegment { + using _Traits = __segmented_iterator_traits<_InIter>; + + _OutIter& __result_; + + _LIBCPP_HIDE_FROM_ABI _CopySegment(_OutIter& __result) : __result_(__result) {} + + _LIBCPP_HIDE_FROM_ABI void + operator()(typename _Traits::__local_iterator __lfirst, typename _Traits::__local_iterator __llast) { + __result_ = std::__copy<_AlgPolicy>(__lfirst, __llast, std::move(__result_)).second; + } + }; + + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + std::__for_each_segment(__first, __last, _CopySegment<_InIter, _OutIter>(__result)); + return std::make_pair(__last, std::move(__result)); + } + + template ::value && + !__is_segmented_iterator<_InIter>::value && __is_segmented_iterator<_OutIter>::value, + int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_OutIter>; + using _DiffT = typename common_type<__iter_diff_t<_InIter>, __iter_diff_t<_OutIter> >::type; + + if (__first == __last) + return std::make_pair(std::move(__first), std::move(__result)); + + auto __local_first = _Traits::__local(__result); + auto __segment_iterator = _Traits::__segment(__result); + while (true) { + auto __local_last = _Traits::__end(__segment_iterator); + auto __size = std::min<_DiffT>(__local_last - __local_first, __last - __first); + auto __iters = std::__copy<_AlgPolicy>(__first, __first + __size, __local_first); + __first = std::move(__iters.first); + + if (__first == __last) + return std::make_pair(std::move(__first), _Traits::__compose(__segment_iterator, std::move(__iters.second))); + + __local_first = _Traits::__begin(++__segment_iterator); + } + } +}; + +struct __copy_trivial { + // At this point, the iterators have been unwrapped so any `contiguous_iterator` has been unwrapped to a pointer. + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> + operator()(_In* __first, _In* __last, _Out* __result) const { + return std::__copy_trivial_impl(__first, __last, __result); + } +}; + +template +pair<_InIter, _OutIter> inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +__copy(_InIter __first, _Sent __last, _OutIter __result) { + return std::__dispatch_copy_or_move<_AlgPolicy, __copy_loop<_AlgPolicy>, __copy_trivial>( + std::move(__first), std::move(__last), std::move(__result)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator +copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result) { + return std::__copy<_ClassicAlgPolicy>(__first, __last, __result).second; +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_COPY_H diff --git a/lib/libcxx/include/__algorithm/copy_backward.h b/lib/libcxx/include/__algorithm/copy_backward.h new file mode 100644 index 0000000..d85d297 --- /dev/null +++ b/lib/libcxx/include/__algorithm/copy_backward.h @@ -0,0 +1,143 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COPY_BACKWARD_H +#define _LIBCPP___ALGORITHM_COPY_BACKWARD_H + +#include <__algorithm/copy_move_common.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min.h> +#include <__config> +#include <__iterator/segmented_iterator.h> +#include <__type_traits/common_type.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InIter, _OutIter> +__copy_backward(_InIter __first, _Sent __last, _OutIter __result); + +template +struct __copy_backward_loop { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + auto __last_iter = _IterOps<_AlgPolicy>::next(__first, __last); + auto __original_last_iter = __last_iter; + + while (__first != __last_iter) { + *--__result = *--__last_iter; + } + + return std::make_pair(std::move(__original_last_iter), std::move(__result)); + } + + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_InIter>; + auto __sfirst = _Traits::__segment(__first); + auto __slast = _Traits::__segment(__last); + if (__sfirst == __slast) { + auto __iters = + std::__copy_backward<_AlgPolicy>(_Traits::__local(__first), _Traits::__local(__last), std::move(__result)); + return std::make_pair(__last, __iters.second); + } + + __result = + std::__copy_backward<_AlgPolicy>(_Traits::__begin(__slast), _Traits::__local(__last), std::move(__result)) + .second; + --__slast; + while (__sfirst != __slast) { + __result = + std::__copy_backward<_AlgPolicy>(_Traits::__begin(__slast), _Traits::__end(__slast), std::move(__result)) + .second; + --__slast; + } + __result = std::__copy_backward<_AlgPolicy>(_Traits::__local(__first), _Traits::__end(__slast), std::move(__result)) + .second; + return std::make_pair(__last, std::move(__result)); + } + + template ::value && + !__is_segmented_iterator<_InIter>::value && __is_segmented_iterator<_OutIter>::value, + int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_OutIter>; + auto __orig_last = __last; + auto __segment_iterator = _Traits::__segment(__result); + + // When the range contains no elements, __result might not be a valid iterator + if (__first == __last) + return std::make_pair(__first, __result); + + auto __local_last = _Traits::__local(__result); + while (true) { + using _DiffT = typename common_type<__iter_diff_t<_InIter>, __iter_diff_t<_OutIter> >::type; + + auto __local_first = _Traits::__begin(__segment_iterator); + auto __size = std::min<_DiffT>(__local_last - __local_first, __last - __first); + auto __iter = std::__copy_backward<_AlgPolicy>(__last - __size, __last, __local_last).second; + __last -= __size; + + if (__first == __last) + return std::make_pair(std::move(__orig_last), _Traits::__compose(__segment_iterator, std::move(__iter))); + --__segment_iterator; + __local_last = _Traits::__end(__segment_iterator); + } + } +}; + +struct __copy_backward_trivial { + // At this point, the iterators have been unwrapped so any `contiguous_iterator` has been unwrapped to a pointer. + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> + operator()(_In* __first, _In* __last, _Out* __result) const { + return std::__copy_backward_trivial_impl(__first, __last, __result); + } +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_BidirectionalIterator1, _BidirectionalIterator2> +__copy_backward(_BidirectionalIterator1 __first, _Sentinel __last, _BidirectionalIterator2 __result) { + return std::__dispatch_copy_or_move<_AlgPolicy, __copy_backward_loop<_AlgPolicy>, __copy_backward_trivial>( + std::move(__first), std::move(__last), std::move(__result)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_BidirectionalIterator2 +copy_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last, + _BidirectionalIterator2 __result) +{ + static_assert(std::is_copy_constructible<_BidirectionalIterator1>::value && + std::is_copy_constructible<_BidirectionalIterator1>::value, "Iterators must be copy constructible."); + + return std::__copy_backward<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), std::move(__result)).second; +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_COPY_BACKWARD_H diff --git a/lib/libcxx/include/__algorithm/copy_if.h b/lib/libcxx/include/__algorithm/copy_if.h new file mode 100644 index 0000000..a5938b8 --- /dev/null +++ b/lib/libcxx/include/__algorithm/copy_if.h @@ -0,0 +1,39 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COPY_IF_H +#define _LIBCPP___ALGORITHM_COPY_IF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +copy_if(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _Predicate __pred) +{ + for (; __first != __last; ++__first) + { + if (__pred(*__first)) + { + *__result = *__first; + ++__result; + } + } + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/copy_move_common.h b/lib/libcxx/include/__algorithm/copy_move_common.h new file mode 100644 index 0000000..c06892e --- /dev/null +++ b/lib/libcxx/include/__algorithm/copy_move_common.h @@ -0,0 +1,138 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COPY_MOVE_COMMON_H +#define _LIBCPP___ALGORITHM_COPY_MOVE_COMMON_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/unwrap_iter.h> +#include <__algorithm/unwrap_range.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__memory/pointer_traits.h> +#include <__string/constexpr_c_functions.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_always_bitcastable.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_trivially_assignable.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__type_traits/is_volatile.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Type traits. + +template +struct __can_lower_copy_assignment_to_memmove { + static const bool value = + // If the types are always bitcastable, it's valid to do a bitwise copy between them. + __is_always_bitcastable<_From, _To>::value && + // Reject conversions that wouldn't be performed by the regular built-in assignment (e.g. between arrays). + is_trivially_assignable<_To&, const _From&>::value && + // `memmove` doesn't accept `volatile` pointers, make sure the optimization SFINAEs away in that case. + !is_volatile<_From>::value && + !is_volatile<_To>::value; +}; + +template +struct __can_lower_move_assignment_to_memmove { + static const bool value = + __is_always_bitcastable<_From, _To>::value && + is_trivially_assignable<_To&, _From&&>::value && + !is_volatile<_From>::value && + !is_volatile<_To>::value; +}; + +// `memmove` algorithms implementation. + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> +__copy_trivial_impl(_In* __first, _In* __last, _Out* __result) { + const size_t __n = static_cast(__last - __first); + + std::__constexpr_memmove(__result, __first, __element_count(__n)); + + return std::make_pair(__last, __result + __n); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> +__copy_backward_trivial_impl(_In* __first, _In* __last, _Out* __result) { + const size_t __n = static_cast(__last - __first); + __result -= __n; + + std::__constexpr_memmove(__result, __first, __element_count(__n)); + + return std::make_pair(__last, __result); +} + +// Iterator unwrapping and dispatching to the correct overload. + +template +struct __overload : _F1, _F2 { + using _F1::operator(); + using _F2::operator(); +}; + +template +struct __can_rewrap : false_type {}; + +template +struct __can_rewrap<_InIter, + _Sent, + _OutIter, + // Note that sentinels are always copy-constructible. + __enable_if_t< is_copy_constructible<_InIter>::value && + is_copy_constructible<_OutIter>::value > > : true_type {}; + +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 pair<_InIter, _OutIter> +__unwrap_and_dispatch(_InIter __first, _Sent __last, _OutIter __out_first) { + auto __range = std::__unwrap_range(__first, std::move(__last)); + auto __result = _Algorithm()(std::move(__range.first), std::move(__range.second), std::__unwrap_iter(__out_first)); + return std::make_pair(std::__rewrap_range<_Sent>(std::move(__first), std::move(__result.first)), + std::__rewrap_iter(std::move(__out_first), std::move(__result.second))); +} + +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 pair<_InIter, _OutIter> +__unwrap_and_dispatch(_InIter __first, _Sent __last, _OutIter __out_first) { + return _Algorithm()(std::move(__first), std::move(__last), std::move(__out_first)); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 pair<_InIter, _OutIter> +__dispatch_copy_or_move(_InIter __first, _Sent __last, _OutIter __out_first) { + using _Algorithm = __overload<_NaiveAlgorithm, _OptimizedAlgorithm>; + return std::__unwrap_and_dispatch<_Algorithm>(std::move(__first), std::move(__last), std::move(__out_first)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COPY_MOVE_COMMON_H diff --git a/lib/libcxx/include/__algorithm/copy_n.h b/lib/libcxx/include/__algorithm/copy_n.h new file mode 100644 index 0000000..f370166 --- /dev/null +++ b/lib/libcxx/include/__algorithm/copy_n.h @@ -0,0 +1,67 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COPY_N_H +#define _LIBCPP___ALGORITHM_COPY_N_H + +#include <__algorithm/copy.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__utility/convert_to_integral.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename enable_if +< + __has_input_iterator_category<_InputIterator>::value && + !__has_random_access_iterator_category<_InputIterator>::value, + _OutputIterator +>::type +copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result) +{ + typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize; + _IntegralSize __n = __orig_n; + if (__n > 0) + { + *__result = *__first; + ++__result; + for (--__n; __n > 0; --__n) + { + ++__first; + *__result = *__first; + ++__result; + } + } + return __result; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename enable_if +< + __has_random_access_iterator_category<_InputIterator>::value, + _OutputIterator +>::type +copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result) +{ + typedef typename iterator_traits<_InputIterator>::difference_type difference_type; + typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize; + _IntegralSize __n = __orig_n; + return _VSTD::copy(__first, __first + difference_type(__n), __result); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COPY_N_H diff --git a/lib/libcxx/include/__algorithm/count.h b/lib/libcxx/include/__algorithm/count.h new file mode 100644 index 0000000..6c8c7fd --- /dev/null +++ b/lib/libcxx/include/__algorithm/count.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COUNT_H +#define _LIBCPP___ALGORITHM_COUNT_H + +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename iterator_traits<_InputIterator>::difference_type + count(_InputIterator __first, _InputIterator __last, const _Tp& __value) { + typename iterator_traits<_InputIterator>::difference_type __r(0); + for (; __first != __last; ++__first) + if (*__first == __value) + ++__r; + return __r; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COUNT_H diff --git a/lib/libcxx/include/__algorithm/count_if.h b/lib/libcxx/include/__algorithm/count_if.h new file mode 100644 index 0000000..b96521f --- /dev/null +++ b/lib/libcxx/include/__algorithm/count_if.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_COUNT_IF_H +#define _LIBCPP___ALGORITHM_COUNT_IF_H + +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename iterator_traits<_InputIterator>::difference_type + count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + typename iterator_traits<_InputIterator>::difference_type __r(0); + for (; __first != __last; ++__first) + if (__pred(*__first)) + ++__r; + return __r; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COUNT_IF_H diff --git a/lib/libcxx/include/__algorithm/equal.h b/lib/libcxx/include/__algorithm/equal.h new file mode 100644 index 0000000..b69aeff --- /dev/null +++ b/lib/libcxx/include/__algorithm/equal.h @@ -0,0 +1,149 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_EQUAL_H +#define _LIBCPP___ALGORITHM_EQUAL_H + +#include <__algorithm/comp.h> +#include <__algorithm/unwrap_iter.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__string/constexpr_c_functions.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__type_traits/is_equality_comparable.h> +#include <__type_traits/is_volatile.h> +#include <__type_traits/predicate_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __equal_iter_impl( + _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate& __pred) { + for (; __first1 != __last1; ++__first1, (void)++__first2) + if (!__pred(*__first1, *__first2)) + return false; + return true; +} + +template < + class _Tp, + class _Up, + class _BinaryPredicate, + __enable_if_t<__is_trivial_equality_predicate<_BinaryPredicate, _Tp, _Up>::value && !is_volatile<_Tp>::value && + !is_volatile<_Up>::value && __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value, + int> = 0> +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__equal_iter_impl(_Tp* __first1, _Tp* __last1, _Up* __first2, _BinaryPredicate&) { + return std::__constexpr_memcmp_equal(__first1, __first2, __element_count(__last1 - __first1)); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) { + return std::__equal_iter_impl( + std::__unwrap_iter(__first1), std::__unwrap_iter(__last1), std::__unwrap_iter(__first2), __pred); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) { + return std::equal(__first1, __last1, __first2, __equal_to()); +} + +#if _LIBCPP_STD_VER >= 14 +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, + _BinaryPredicate __pred, input_iterator_tag, input_iterator_tag) { + for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2) + if (!__pred(*__first1, *__first2)) + return false; + return __first1 == __last1 && __first2 == __last2; +} + +template +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __equal_impl( + _Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, _Pred& __comp, _Proj1& __proj1, _Proj2& __proj2) { + while (__first1 != __last1 && __first2 != __last2) { + if (!std::__invoke(__comp, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + return false; + ++__first1; + ++__first2; + } + return __first1 == __last1 && __first2 == __last2; +} + +template ::value && __is_identity<_Proj1>::value && + __is_identity<_Proj2>::value && !is_volatile<_Tp>::value && !is_volatile<_Up>::value && + __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value, + int> = 0> +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __equal_impl( + _Tp* __first1, _Tp* __last1, _Up* __first2, _Up*, _Pred&, _Proj1&, _Proj2&) { + return std::__constexpr_memcmp_equal(__first1, __first2, __element_count(__last1 - __first1)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, + _RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag, + random_access_iterator_tag) { + if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2)) + return false; + __identity __proj; + return std::__equal_impl( + std::__unwrap_iter(__first1), + std::__unwrap_iter(__last1), + std::__unwrap_iter(__first2), + std::__unwrap_iter(__last2), + __pred, + __proj, + __proj); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, + _BinaryPredicate __pred) { + return _VSTD::__equal<_BinaryPredicate&>( + __first1, __last1, __first2, __last2, __pred, typename iterator_traits<_InputIterator1>::iterator_category(), + typename iterator_traits<_InputIterator2>::iterator_category()); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { + return std::__equal( + __first1, + __last1, + __first2, + __last2, + __equal_to(), + typename iterator_traits<_InputIterator1>::iterator_category(), + typename iterator_traits<_InputIterator2>::iterator_category()); +} +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_EQUAL_H diff --git a/lib/libcxx/include/__algorithm/equal_range.h b/lib/libcxx/include/__algorithm/equal_range.h new file mode 100644 index 0000000..dc1268a --- /dev/null +++ b/lib/libcxx/include/__algorithm/equal_range.h @@ -0,0 +1,83 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_EQUAL_RANGE_H +#define _LIBCPP___ALGORITHM_EQUAL_RANGE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/half_positive.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/lower_bound.h> +#include <__algorithm/upper_bound.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__type_traits/is_callable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_Iter, _Iter> +__equal_range(_Iter __first, _Sent __last, const _Tp& __value, _Compare&& __comp, _Proj&& __proj) { + auto __len = _IterOps<_AlgPolicy>::distance(__first, __last); + _Iter __end = _IterOps<_AlgPolicy>::next(__first, __last); + while (__len != 0) { + auto __half_len = std::__half_positive(__len); + _Iter __mid = _IterOps<_AlgPolicy>::next(__first, __half_len); + if (std::__invoke(__comp, std::__invoke(__proj, *__mid), __value)) { + __first = ++__mid; + __len -= __half_len + 1; + } else if (std::__invoke(__comp, __value, std::__invoke(__proj, *__mid))) { + __end = __mid; + __len = __half_len; + } else { + _Iter __mp1 = __mid; + return pair<_Iter, _Iter>( + std::__lower_bound<_AlgPolicy>(__first, __mid, __value, __comp, __proj), + std::__upper_bound<_AlgPolicy>(++__mp1, __end, __value, __comp, __proj)); + } + } + return pair<_Iter, _Iter>(__first, __first); +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_ForwardIterator, _ForwardIterator> +equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) { + static_assert(__is_callable<_Compare, decltype(*__first), const _Tp&>::value, + "The comparator has to be callable"); + static_assert(is_copy_constructible<_ForwardIterator>::value, + "Iterator has to be copy constructible"); + return std::__equal_range<_ClassicAlgPolicy>( + std::move(__first), + std::move(__last), + __value, + static_cast<__comp_ref_type<_Compare> >(__comp), + std::__identity()); +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_ForwardIterator, _ForwardIterator> +equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + return std::equal_range(std::move(__first), std::move(__last), __value, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_EQUAL_RANGE_H diff --git a/lib/libcxx/include/__algorithm/fill.h b/lib/libcxx/include/__algorithm/fill.h new file mode 100644 index 0000000..0753c42 --- /dev/null +++ b/lib/libcxx/include/__algorithm/fill.h @@ -0,0 +1,51 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FILL_H +#define _LIBCPP___ALGORITHM_FILL_H + +#include <__algorithm/fill_n.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// fill isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset. + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, forward_iterator_tag) +{ + for (; __first != __last; ++__first) + *__first = __value; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value, random_access_iterator_tag) +{ + _VSTD::fill_n(__first, __last - __first, __value); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) +{ + _VSTD::__fill(__first, __last, __value, typename iterator_traits<_ForwardIterator>::iterator_category()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FILL_H diff --git a/lib/libcxx/include/__algorithm/fill_n.h b/lib/libcxx/include/__algorithm/fill_n.h new file mode 100644 index 0000000..e7863ac --- /dev/null +++ b/lib/libcxx/include/__algorithm/fill_n.h @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FILL_N_H +#define _LIBCPP___ALGORITHM_FILL_N_H + +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/convert_to_integral.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// fill_n isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset. + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +__fill_n(_OutputIterator __first, _Size __n, const _Tp& __value) +{ + for (; __n > 0; ++__first, (void) --__n) + *__first = __value; + return __first; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +fill_n(_OutputIterator __first, _Size __n, const _Tp& __value) +{ + return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FILL_N_H diff --git a/lib/libcxx/include/__algorithm/find.h b/lib/libcxx/include/__algorithm/find.h new file mode 100644 index 0000000..e0de503 --- /dev/null +++ b/lib/libcxx/include/__algorithm/find.h @@ -0,0 +1,77 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FIND_H +#define _LIBCPP___ALGORITHM_FIND_H + +#include <__algorithm/unwrap_iter.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__string/constexpr_c_functions.h> +#include <__type_traits/is_same.h> + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Iter +__find_impl(_Iter __first, _Sent __last, const _Tp& __value, _Proj& __proj) { + for (; __first != __last; ++__first) + if (std::__invoke(__proj, *__first) == __value) + break; + return __first; +} + +template ::value && __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value && + sizeof(_Tp) == 1, + int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* +__find_impl(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) { + if (auto __ret = std::__constexpr_memchr(__first, __value, __last - __first)) + return __ret; + return __last; +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template ::value && __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value && + sizeof(_Tp) == sizeof(wchar_t) && _LIBCPP_ALIGNOF(_Tp) >= _LIBCPP_ALIGNOF(wchar_t), + int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* +__find_impl(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) { + if (auto __ret = std::__constexpr_wmemchr(__first, __value, __last - __first)) + return __ret; + return __last; +} +#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _InputIterator +find(_InputIterator __first, _InputIterator __last, const _Tp& __value) { + __identity __proj; + return std::__rewrap_iter( + __first, std::__find_impl(std::__unwrap_iter(__first), std::__unwrap_iter(__last), __value, __proj)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FIND_H diff --git a/lib/libcxx/include/__algorithm/find_end.h b/lib/libcxx/include/__algorithm/find_end.h new file mode 100644 index 0000000..edb9891 --- /dev/null +++ b/lib/libcxx/include/__algorithm/find_end.h @@ -0,0 +1,227 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FIND_END_OF_H +#define _LIBCPP___ALGORITHM_FIND_END_OF_H + +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/search.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/reverse_iterator.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template < + class _AlgPolicy, + class _Iter1, + class _Sent1, + class _Iter2, + class _Sent2, + class _Pred, + class _Proj1, + class _Proj2> +_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_Iter1, _Iter1> __find_end_impl( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + forward_iterator_tag, + forward_iterator_tag) { + // modeled after search algorithm + _Iter1 __match_first = _IterOps<_AlgPolicy>::next(__first1, __last1); // __last1 is the "default" answer + _Iter1 __match_last = __match_first; + if (__first2 == __last2) + return pair<_Iter1, _Iter1>(__match_last, __match_last); + while (true) { + while (true) { + if (__first1 == __last1) // if source exhausted return last correct answer (or __last1 if never found) + return pair<_Iter1, _Iter1>(__match_first, __match_last); + if (std::__invoke(__pred, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + break; + ++__first1; + } + // *__first1 matches *__first2, now match elements after here + _Iter1 __m1 = __first1; + _Iter2 __m2 = __first2; + while (true) { + if (++__m2 == __last2) { // Pattern exhaused, record answer and search for another one + __match_first = __first1; + __match_last = ++__m1; + ++__first1; + break; + } + if (++__m1 == __last1) // Source exhausted, return last answer + return pair<_Iter1, _Iter1>(__match_first, __match_last); + // mismatch, restart with a new __first + if (!std::__invoke(__pred, std::__invoke(__proj1, *__m1), std::__invoke(__proj2, *__m2))) + { + ++__first1; + break; + } // else there is a match, check next elements + } + } +} + +template < + class _IterOps, + class _Pred, + class _Iter1, + class _Sent1, + class _Iter2, + class _Sent2, + class _Proj1, + class _Proj2> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Iter1 __find_end( + _Iter1 __first1, + _Sent1 __sent1, + _Iter2 __first2, + _Sent2 __sent2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + bidirectional_iterator_tag, + bidirectional_iterator_tag) { + auto __last1 = _IterOps::next(__first1, __sent1); + auto __last2 = _IterOps::next(__first2, __sent2); + // modeled after search algorithm (in reverse) + if (__first2 == __last2) + return __last1; // Everything matches an empty sequence + _Iter1 __l1 = __last1; + _Iter2 __l2 = __last2; + --__l2; + while (true) { + // Find last element in sequence 1 that matchs *(__last2-1), with a mininum of loop checks + while (true) { + if (__first1 == __l1) // return __last1 if no element matches *__first2 + return __last1; + if (std::__invoke(__pred, std::__invoke(__proj1, *--__l1), std::__invoke(__proj2, *__l2))) + break; + } + // *__l1 matches *__l2, now match elements before here + _Iter1 __m1 = __l1; + _Iter2 __m2 = __l2; + while (true) { + if (__m2 == __first2) // If pattern exhausted, __m1 is the answer (works for 1 element pattern) + return __m1; + if (__m1 == __first1) // Otherwise if source exhaused, pattern not found + return __last1; + + // if there is a mismatch, restart with a new __l1 + if (!std::__invoke(__pred, std::__invoke(__proj1, *--__m1), std::__invoke(__proj2, *--__m2))) + { + break; + } // else there is a match, check next elements + } + } +} + +template < + class _AlgPolicy, + class _Pred, + class _Iter1, + class _Sent1, + class _Iter2, + class _Sent2, + class _Proj1, + class _Proj2> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Iter1 __find_end( + _Iter1 __first1, + _Sent1 __sent1, + _Iter2 __first2, + _Sent2 __sent2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + random_access_iterator_tag, + random_access_iterator_tag) { + typedef typename iterator_traits<_Iter1>::difference_type _D1; + auto __last1 = _IterOps<_AlgPolicy>::next(__first1, __sent1); + auto __last2 = _IterOps<_AlgPolicy>::next(__first2, __sent2); + // Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern + auto __len2 = __last2 - __first2; + if (__len2 == 0) + return __last1; + auto __len1 = __last1 - __first1; + if (__len1 < __len2) + return __last1; + const _Iter1 __s = __first1 + _D1(__len2 - 1); // End of pattern match can't go before here + _Iter1 __l1 = __last1; + _Iter2 __l2 = __last2; + --__l2; + while (true) { + while (true) { + if (__s == __l1) + return __last1; + if (std::__invoke(__pred, std::__invoke(__proj1, *--__l1), std::__invoke(__proj2, *__l2))) + break; + } + _Iter1 __m1 = __l1; + _Iter2 __m2 = __l2; + while (true) { + if (__m2 == __first2) + return __m1; + // no need to check range on __m1 because __s guarantees we have enough source + if (!std::__invoke(__pred, std::__invoke(__proj1, *--__m1), std::__invoke(*--__m2))) { + break; + } + } + } +} + +template +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +_ForwardIterator1 __find_end_classic(_ForwardIterator1 __first1, _ForwardIterator1 __last1, + _ForwardIterator2 __first2, _ForwardIterator2 __last2, + _BinaryPredicate& __pred) { + auto __proj = __identity(); + return std::__find_end_impl<_ClassicAlgPolicy>( + __first1, + __last1, + __first2, + __last2, + __pred, + __proj, + __proj, + typename iterator_traits<_ForwardIterator1>::iterator_category(), + typename iterator_traits<_ForwardIterator2>::iterator_category()) + .first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator1 find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, + _ForwardIterator2 __first2, _ForwardIterator2 __last2, + _BinaryPredicate __pred) { + return std::__find_end_classic(__first1, __last1, __first2, __last2, __pred); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator1 find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, + _ForwardIterator2 __first2, _ForwardIterator2 __last2) { + return std::find_end(__first1, __last1, __first2, __last2, __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FIND_END_OF_H diff --git a/lib/libcxx/include/__algorithm/find_first_of.h b/lib/libcxx/include/__algorithm/find_first_of.h new file mode 100644 index 0000000..12f0109 --- /dev/null +++ b/lib/libcxx/include/__algorithm/find_first_of.h @@ -0,0 +1,52 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FIND_FIRST_OF_H +#define _LIBCPP___ALGORITHM_FIND_FIRST_OF_H + +#include <__algorithm/comp.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI +_LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_first_of_ce(_ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _ForwardIterator2 __last2, + _BinaryPredicate&& __pred) { + for (; __first1 != __last1; ++__first1) + for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j) + if (__pred(*__first1, *__j)) + return __first1; + return __last1; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 +find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, + _ForwardIterator2 __last2, _BinaryPredicate __pred) { + return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of( + _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) { + return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FIND_FIRST_OF_H diff --git a/lib/libcxx/include/__algorithm/find_if.h b/lib/libcxx/include/__algorithm/find_if.h new file mode 100644 index 0000000..f4ef3ac --- /dev/null +++ b/lib/libcxx/include/__algorithm/find_if.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FIND_IF_H +#define _LIBCPP___ALGORITHM_FIND_IF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _InputIterator +find_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + for (; __first != __last; ++__first) + if (__pred(*__first)) + break; + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FIND_IF_H diff --git a/lib/libcxx/include/__algorithm/find_if_not.h b/lib/libcxx/include/__algorithm/find_if_not.h new file mode 100644 index 0000000..96c159c --- /dev/null +++ b/lib/libcxx/include/__algorithm/find_if_not.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FIND_IF_NOT_H +#define _LIBCPP___ALGORITHM_FIND_IF_NOT_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _InputIterator +find_if_not(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + for (; __first != __last; ++__first) + if (!__pred(*__first)) + break; + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FIND_IF_NOT_H diff --git a/lib/libcxx/include/__algorithm/for_each.h b/lib/libcxx/include/__algorithm/for_each.h new file mode 100644 index 0000000..6564f31 --- /dev/null +++ b/lib/libcxx/include/__algorithm/for_each.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FOR_EACH_H +#define _LIBCPP___ALGORITHM_FOR_EACH_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _Function for_each(_InputIterator __first, + _InputIterator __last, + _Function __f) { + for (; __first != __last; ++__first) + __f(*__first); + return __f; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FOR_EACH_H diff --git a/lib/libcxx/include/__algorithm/for_each_n.h b/lib/libcxx/include/__algorithm/for_each_n.h new file mode 100644 index 0000000..5bd7318 --- /dev/null +++ b/lib/libcxx/include/__algorithm/for_each_n.h @@ -0,0 +1,42 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FOR_EACH_N_H +#define _LIBCPP___ALGORITHM_FOR_EACH_N_H + +#include <__config> +#include <__utility/convert_to_integral.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _InputIterator for_each_n(_InputIterator __first, + _Size __orig_n, + _Function __f) { + typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize; + _IntegralSize __n = __orig_n; + while (__n > 0) { + __f(*__first); + ++__first; + --__n; + } + return __first; +} + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FOR_EACH_N_H diff --git a/lib/libcxx/include/__algorithm/for_each_segment.h b/lib/libcxx/include/__algorithm/for_each_segment.h new file mode 100644 index 0000000..93aa825 --- /dev/null +++ b/lib/libcxx/include/__algorithm/for_each_segment.h @@ -0,0 +1,53 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_FOR_EACH_SEGMENT_H +#define _LIBCPP___ALGORITHM_FOR_EACH_SEGMENT_H + +#include <__config> +#include <__iterator/segmented_iterator.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// __for_each_segment is a utility function for optimizing iterating over segmented iterators linearly. +// __first and __last are expected to be a segmented range. __func is expected to take a range of local iterators. +// Anything that is returned from __func is ignored. + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void +__for_each_segment(_SegmentedIterator __first, _SegmentedIterator __last, _Functor __func) { + using _Traits = __segmented_iterator_traits<_SegmentedIterator>; + + auto __sfirst = _Traits::__segment(__first); + auto __slast = _Traits::__segment(__last); + + // We are in a single segment, so we might not be at the beginning or end + if (__sfirst == __slast) { + __func(_Traits::__local(__first), _Traits::__local(__last)); + return; + } + + // We have more than one segment. Iterate over the first segment, since we might not start at the beginning + __func(_Traits::__local(__first), _Traits::__end(__sfirst)); + ++__sfirst; + // iterate over the segments which are guaranteed to be completely in the range + while (__sfirst != __slast) { + __func(_Traits::__begin(__sfirst), _Traits::__end(__sfirst)); + ++__sfirst; + } + // iterate over the last segment + __func(_Traits::__begin(__sfirst), _Traits::__local(__last)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_FOR_EACH_SEGMENT_H diff --git a/lib/libcxx/include/__algorithm/generate.h b/lib/libcxx/include/__algorithm/generate.h new file mode 100644 index 0000000..48e21b5 --- /dev/null +++ b/lib/libcxx/include/__algorithm/generate.h @@ -0,0 +1,31 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_GENERATE_H +#define _LIBCPP___ALGORITHM_GENERATE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +generate(_ForwardIterator __first, _ForwardIterator __last, _Generator __gen) +{ + for (; __first != __last; ++__first) + *__first = __gen(); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_GENERATE_H diff --git a/lib/libcxx/include/__algorithm/generate_n.h b/lib/libcxx/include/__algorithm/generate_n.h new file mode 100644 index 0000000..ff5c82d --- /dev/null +++ b/lib/libcxx/include/__algorithm/generate_n.h @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_GENERATE_N_H +#define _LIBCPP___ALGORITHM_GENERATE_N_H + +#include <__config> +#include <__utility/convert_to_integral.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen) +{ + typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize; + _IntegralSize __n = __orig_n; + for (; __n > 0; ++__first, (void) --__n) + *__first = __gen(); + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_GENERATE_N_H diff --git a/lib/libcxx/include/__algorithm/half_positive.h b/lib/libcxx/include/__algorithm/half_positive.h new file mode 100644 index 0000000..5a0f4ba --- /dev/null +++ b/lib/libcxx/include/__algorithm/half_positive.h @@ -0,0 +1,51 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_HALF_POSITIVE_H +#define _LIBCPP___ALGORITHM_HALF_POSITIVE_H + +#include <__config> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_integral.h> +#include <__type_traits/make_unsigned.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Perform division by two quickly for positive integers (llvm.org/PR39129) + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + is_integral<_Integral>::value, + _Integral +>::type +__half_positive(_Integral __value) +{ + return static_cast<_Integral>(static_cast<__make_unsigned_t<_Integral> >(__value) / 2); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + !is_integral<_Tp>::value, + _Tp +>::type +__half_positive(_Tp __value) +{ + return __value / 2; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_HALF_POSITIVE_H diff --git a/lib/libcxx/include/__algorithm/in_found_result.h b/lib/libcxx/include/__algorithm/in_found_result.h new file mode 100644 index 0000000..d9ca287 --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_found_result.h @@ -0,0 +1,49 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_FOUND_RESULT_H +#define _LIBCPP___ALGORITHM_IN_FOUND_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +template +struct in_found_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in; + bool found; + + template + requires convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr operator in_found_result<_InIter2>() const & { + return {in, found}; + } + + template + requires convertible_to<_InIter1, _InIter2> + _LIBCPP_HIDE_FROM_ABI constexpr operator in_found_result<_InIter2>() && { + return {std::move(in), found}; + } +}; +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_IN_FOUND_RESULT_H diff --git a/lib/libcxx/include/__algorithm/in_fun_result.h b/lib/libcxx/include/__algorithm/in_fun_result.h new file mode 100644 index 0000000..33374ed --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_fun_result.h @@ -0,0 +1,49 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_FUN_RESULT_H +#define _LIBCPP___ALGORITHM_IN_FUN_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { +template +struct in_fun_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in; + _LIBCPP_NO_UNIQUE_ADDRESS _Func1 fun; + + template + requires convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() const & { + return {in, fun}; + } + + template + requires convertible_to<_InIter1, _InIter2> && convertible_to<_Func1, _Func2> + _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() && { + return {std::move(in), std::move(fun)}; + } +}; +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IN_FUN_RESULT_H diff --git a/lib/libcxx/include/__algorithm/in_in_out_result.h b/lib/libcxx/include/__algorithm/in_in_out_result.h new file mode 100644 index 0000000..6b50e0e --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_in_out_result.h @@ -0,0 +1,56 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_IN_OUT_RESULT_H +#define _LIBCPP___ALGORITHM_IN_IN_OUT_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +struct in_in_out_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in1; + _LIBCPP_NO_UNIQUE_ADDRESS _InIter2 in2; + _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out; + + template + requires convertible_to + && convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_in_out_result<_InIter3, _InIter4, _OutIter2>() const& { + return {in1, in2, out}; + } + + template + requires convertible_to<_InIter1, _InIter3> + && convertible_to<_InIter2, _InIter4> && convertible_to<_OutIter1, _OutIter2> + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_in_out_result<_InIter3, _InIter4, _OutIter2>() && { + return {std::move(in1), std::move(in2), std::move(out)}; + } +}; + +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IN_IN_OUT_RESULT_H diff --git a/lib/libcxx/include/__algorithm/in_in_result.h b/lib/libcxx/include/__algorithm/in_in_result.h new file mode 100644 index 0000000..1eceb9d --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_in_result.h @@ -0,0 +1,53 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_IN_RESULT_H +#define _LIBCPP___ALGORITHM_IN_IN_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +struct in_in_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in1; + _LIBCPP_NO_UNIQUE_ADDRESS _InIter2 in2; + + template + requires convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_in_result<_InIter3, _InIter4>() const & { + return {in1, in2}; + } + + template + requires convertible_to<_InIter1, _InIter3> && convertible_to<_InIter2, _InIter4> + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_in_result<_InIter3, _InIter4>() && { + return {std::move(in1), std::move(in2)}; + } +}; + +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IN_IN_RESULT_H diff --git a/lib/libcxx/include/__algorithm/in_out_out_result.h b/lib/libcxx/include/__algorithm/in_out_out_result.h new file mode 100644 index 0000000..2f7a09b --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_out_out_result.h @@ -0,0 +1,54 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H +#define _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { +template +struct in_out_out_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in; + _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out1; + _LIBCPP_NO_UNIQUE_ADDRESS _OutIter2 out2; + + template + requires convertible_to + && convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_out_out_result<_InIter2, _OutIter3, _OutIter4>() const& { + return {in, out1, out2}; + } + + template + requires convertible_to<_InIter1, _InIter2> + && convertible_to<_OutIter1, _OutIter3> && convertible_to<_OutIter2, _OutIter4> + _LIBCPP_HIDE_FROM_ABI constexpr + operator in_out_out_result<_InIter2, _OutIter3, _OutIter4>() && { + return {std::move(in), std::move(out1), std::move(out2)}; + } +}; +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H diff --git a/lib/libcxx/include/__algorithm/in_out_result.h b/lib/libcxx/include/__algorithm/in_out_result.h new file mode 100644 index 0000000..e4741cb --- /dev/null +++ b/lib/libcxx/include/__algorithm/in_out_result.h @@ -0,0 +1,58 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IN_OUT_RESULT_H +#define _LIBCPP___ALGORITHM_IN_OUT_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +struct in_out_result { + _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in; + _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out; + + template + requires convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI + constexpr operator in_out_result<_InIter2, _OutIter2>() const & { + return {in, out}; + } + + template + requires convertible_to<_InIter1, _InIter2> && convertible_to<_OutIter1, _OutIter2> + _LIBCPP_HIDE_FROM_ABI + constexpr operator in_out_result<_InIter2, _OutIter2>() && { + return {std::move(in), std::move(out)}; + } +}; + +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_IN_OUT_RESULT_H diff --git a/lib/libcxx/include/__algorithm/includes.h b/lib/libcxx/include/__algorithm/includes.h new file mode 100644 index 0000000..88253e2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/includes.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_INCLUDES_H +#define _LIBCPP___ALGORITHM_INCLUDES_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_callable.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__includes(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, + _Comp&& __comp, _Proj1&& __proj1, _Proj2&& __proj2) { + for (; __first2 != __last2; ++__first1) { + if (__first1 == __last1 || std::__invoke( + __comp, std::__invoke(__proj2, *__first2), std::__invoke(__proj1, *__first1))) + return false; + if (!std::__invoke(__comp, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + ++__first2; + } + return true; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool includes( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _Compare __comp) { + static_assert(__is_callable<_Compare, decltype(*__first1), decltype(*__first2)>::value, + "Comparator has to be callable"); + + return std::__includes( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + static_cast<__comp_ref_type<_Compare> >(__comp), + __identity(), + __identity()); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { + return std::includes(std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_INCLUDES_H diff --git a/lib/libcxx/include/__algorithm/inplace_merge.h b/lib/libcxx/include/__algorithm/inplace_merge.h new file mode 100644 index 0000000..44a9425 --- /dev/null +++ b/lib/libcxx/include/__algorithm/inplace_merge.h @@ -0,0 +1,256 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_INPLACE_MERGE_H +#define _LIBCPP___ALGORITHM_INPLACE_MERGE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/lower_bound.h> +#include <__algorithm/min.h> +#include <__algorithm/move.h> +#include <__algorithm/rotate.h> +#include <__algorithm/upper_bound.h> +#include <__config> +#include <__functional/identity.h> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/reverse_iterator.h> +#include <__memory/destruct_n.h> +#include <__memory/temporary_buffer.h> +#include <__memory/unique_ptr.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class __invert // invert the sense of a comparison +{ +private: + _Predicate __p_; +public: + _LIBCPP_INLINE_VISIBILITY __invert() {} + + _LIBCPP_INLINE_VISIBILITY + explicit __invert(_Predicate __p) : __p_(__p) {} + + template + _LIBCPP_INLINE_VISIBILITY + bool operator()(const _T1& __x) {return !__p_(__x);} + + template + _LIBCPP_INLINE_VISIBILITY + bool operator()(const _T1& __x, const _T2& __y) {return __p_(__y, __x);} +}; + +template +_LIBCPP_HIDE_FROM_ABI +void __half_inplace_merge(_InputIterator1 __first1, _Sent1 __last1, + _InputIterator2 __first2, _Sent2 __last2, + _OutputIterator __result, _Compare&& __comp) +{ + for (; __first1 != __last1; ++__result) + { + if (__first2 == __last2) + { + std::__move<_AlgPolicy>(__first1, __last1, __result); + return; + } + + if (__comp(*__first2, *__first1)) + { + *__result = _IterOps<_AlgPolicy>::__iter_move(__first2); + ++__first2; + } + else + { + *__result = _IterOps<_AlgPolicy>::__iter_move(__first1); + ++__first1; + } + } + // __first2 through __last2 are already in the right spot. +} + +template +_LIBCPP_HIDE_FROM_ABI +void __buffered_inplace_merge( + _BidirectionalIterator __first, + _BidirectionalIterator __middle, + _BidirectionalIterator __last, + _Compare&& __comp, + typename iterator_traits<_BidirectionalIterator>::difference_type __len1, + typename iterator_traits<_BidirectionalIterator>::difference_type __len2, + typename iterator_traits<_BidirectionalIterator>::value_type* __buff) { + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + __destruct_n __d(0); + unique_ptr __h2(__buff, __d); + if (__len1 <= __len2) + { + value_type* __p = __buff; + for (_BidirectionalIterator __i = __first; __i != __middle; __d.template __incr(), (void) ++__i, (void) ++__p) + ::new ((void*)__p) value_type(_IterOps<_AlgPolicy>::__iter_move(__i)); + std::__half_inplace_merge<_AlgPolicy>(__buff, __p, __middle, __last, __first, __comp); + } + else + { + value_type* __p = __buff; + for (_BidirectionalIterator __i = __middle; __i != __last; __d.template __incr(), (void) ++__i, (void) ++__p) + ::new ((void*)__p) value_type(_IterOps<_AlgPolicy>::__iter_move(__i)); + typedef __unconstrained_reverse_iterator<_BidirectionalIterator> _RBi; + typedef __unconstrained_reverse_iterator _Rv; + typedef __invert<_Compare> _Inverted; + std::__half_inplace_merge<_AlgPolicy>(_Rv(__p), _Rv(__buff), + _RBi(__middle), _RBi(__first), + _RBi(__last), _Inverted(__comp)); + } +} + +template +void __inplace_merge( + _BidirectionalIterator __first, + _BidirectionalIterator __middle, + _BidirectionalIterator __last, + _Compare&& __comp, + typename iterator_traits<_BidirectionalIterator>::difference_type __len1, + typename iterator_traits<_BidirectionalIterator>::difference_type __len2, + typename iterator_traits<_BidirectionalIterator>::value_type* __buff, + ptrdiff_t __buff_size) { + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type; + while (true) + { + // if __middle == __last, we're done + if (__len2 == 0) + return; + if (__len1 <= __buff_size || __len2 <= __buff_size) + return std::__buffered_inplace_merge<_AlgPolicy> + (__first, __middle, __last, __comp, __len1, __len2, __buff); + // shrink [__first, __middle) as much as possible (with no moves), returning if it shrinks to 0 + for (; true; ++__first, (void) --__len1) + { + if (__len1 == 0) + return; + if (__comp(*__middle, *__first)) + break; + } + // __first < __middle < __last + // *__first > *__middle + // partition [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last) such that + // all elements in: + // [__first, __m1) <= [__middle, __m2) + // [__middle, __m2) < [__m1, __middle) + // [__m1, __middle) <= [__m2, __last) + // and __m1 or __m2 is in the middle of its range + _BidirectionalIterator __m1; // "median" of [__first, __middle) + _BidirectionalIterator __m2; // "median" of [__middle, __last) + difference_type __len11; // distance(__first, __m1) + difference_type __len21; // distance(__middle, __m2) + // binary search smaller range + if (__len1 < __len2) + { // __len >= 1, __len2 >= 2 + __len21 = __len2 / 2; + __m2 = __middle; + _Ops::advance(__m2, __len21); + __m1 = std::__upper_bound<_AlgPolicy>(__first, __middle, *__m2, __comp, std::__identity()); + __len11 = _Ops::distance(__first, __m1); + } + else + { + if (__len1 == 1) + { // __len1 >= __len2 && __len2 > 0, therefore __len2 == 1 + // It is known *__first > *__middle + _Ops::iter_swap(__first, __middle); + return; + } + // __len1 >= 2, __len2 >= 1 + __len11 = __len1 / 2; + __m1 = __first; + _Ops::advance(__m1, __len11); + __m2 = std::lower_bound(__middle, __last, *__m1, __comp); + __len21 = _Ops::distance(__middle, __m2); + } + difference_type __len12 = __len1 - __len11; // distance(__m1, __middle) + difference_type __len22 = __len2 - __len21; // distance(__m2, __last) + // [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last) + // swap middle two partitions + __middle = std::__rotate<_AlgPolicy>(__m1, __middle, __m2).first; + // __len12 and __len21 now have swapped meanings + // merge smaller range with recursive call and larger with tail recursion elimination + if (__len11 + __len21 < __len12 + __len22) + { + std::__inplace_merge<_AlgPolicy>( + __first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size); + __first = __middle; + __middle = __m2; + __len1 = __len12; + __len2 = __len22; + } + else + { + std::__inplace_merge<_AlgPolicy>( + __middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size); + __last = __middle; + __middle = __m1; + __len1 = __len11; + __len2 = __len21; + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI +void +__inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last, + _Compare&& __comp) +{ + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type; + difference_type __len1 = _IterOps<_AlgPolicy>::distance(__first, __middle); + difference_type __len2 = _IterOps<_AlgPolicy>::distance(__middle, __last); + difference_type __buf_size = _VSTD::min(__len1, __len2); +// TODO: Remove the use of std::get_temporary_buffer +_LIBCPP_SUPPRESS_DEPRECATED_PUSH + pair __buf = _VSTD::get_temporary_buffer(__buf_size); +_LIBCPP_SUPPRESS_DEPRECATED_POP + unique_ptr __h(__buf.first); + return std::__inplace_merge<_AlgPolicy>( + std::move(__first), std::move(__middle), std::move(__last), __comp, __len1, __len2, __buf.first, __buf.second); +} + +template +inline _LIBCPP_HIDE_FROM_ABI void inplace_merge( + _BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last, _Compare __comp) { + std::__inplace_merge<_ClassicAlgPolicy>( + std::move(__first), std::move(__middle), std::move(__last), static_cast<__comp_ref_type<_Compare> >(__comp)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +void +inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last) +{ + std::inplace_merge(std::move(__first), std::move(__middle), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_INPLACE_MERGE_H diff --git a/lib/libcxx/include/__algorithm/is_heap.h b/lib/libcxx/include/__algorithm/is_heap.h new file mode 100644 index 0000000..93d84d3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_heap.h @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_HEAP_H +#define _LIBCPP___ALGORITHM_IS_HEAP_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/is_heap_until.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) +{ + return std::__is_heap_until(__first, __last, static_cast<__comp_ref_type<_Compare> >(__comp)) == __last; +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) +{ + return _VSTD::is_heap(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IS_HEAP_H diff --git a/lib/libcxx/include/__algorithm/is_heap_until.h b/lib/libcxx/include/__algorithm/is_heap_until.h new file mode 100644 index 0000000..d713111 --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_heap_until.h @@ -0,0 +1,66 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H +#define _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _RandomAccessIterator +__is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare&& __comp) +{ + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + difference_type __len = __last - __first; + difference_type __p = 0; + difference_type __c = 1; + _RandomAccessIterator __pp = __first; + while (__c < __len) + { + _RandomAccessIterator __cp = __first + __c; + if (__comp(*__pp, *__cp)) + return __cp; + ++__c; + ++__cp; + if (__c == __len) + return __last; + if (__comp(*__pp, *__cp)) + return __cp; + ++__p; + ++__pp; + __c = 2 * __p + 1; + } + return __last; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _RandomAccessIterator +is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) +{ + return std::__is_heap_until(__first, __last, static_cast<__comp_ref_type<_Compare> >(__comp)); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _RandomAccessIterator +is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last) +{ + return _VSTD::__is_heap_until(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H diff --git a/lib/libcxx/include/__algorithm/is_partitioned.h b/lib/libcxx/include/__algorithm/is_partitioned.h new file mode 100644 index 0000000..ab59d3c --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_partitioned.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_PARTITIONED_H +#define _LIBCPP___ALGORITHM_IS_PARTITIONED_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +is_partitioned(_InputIterator __first, _InputIterator __last, _Predicate __pred) +{ + for (; __first != __last; ++__first) + if (!__pred(*__first)) + break; + if ( __first == __last ) + return true; + ++__first; + for (; __first != __last; ++__first) + if (__pred(*__first)) + return false; + return true; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IS_PARTITIONED_H diff --git a/lib/libcxx/include/__algorithm/is_permutation.h b/lib/libcxx/include/__algorithm/is_permutation.h new file mode 100644 index 0000000..105a073 --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_permutation.h @@ -0,0 +1,243 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_PERMUTATION_H +#define _LIBCPP___ALGORITHM_IS_PERMUTATION_H + +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__type_traits/is_callable.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _ConstTimeDistance : false_type {}; + +#if _LIBCPP_STD_VER >= 20 + +template +struct _ConstTimeDistance<_Iter1, _Sent1, _Iter2, _Sent2, __enable_if_t< + sized_sentinel_for<_Sent1, _Iter1> && + sized_sentinel_for<_Sent2, _Iter2> +>> : true_type {}; + +#else + +template +struct _ConstTimeDistance<_Iter1, _Iter1, _Iter2, _Iter2, __enable_if_t< + is_same::iterator_category, random_access_iterator_tag>::value && + is_same::iterator_category, random_access_iterator_tag>::value +> > : true_type {}; + +#endif // _LIBCPP_STD_VER >= 20 + +// Internal functions + +// For each element in [f1, l1) see if there are the same number of equal elements in [f2, l2) +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__is_permutation_impl(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, + _Pred&& __pred, _Proj1&& __proj1, _Proj2&& __proj2) { + using _D1 = __iter_diff_t<_Iter1>; + + for (auto __i = __first1; __i != __last1; ++__i) { + // Have we already counted the number of *__i in [f1, l1)? + auto __match = __first1; + for (; __match != __i; ++__match) { + if (std::__invoke(__pred, std::__invoke(__proj1, *__match), std::__invoke(__proj1, *__i))) + break; + } + + if (__match == __i) { + // Count number of *__i in [f2, l2) + _D1 __c2 = 0; + for (auto __j = __first2; __j != __last2; ++__j) { + if (std::__invoke(__pred, std::__invoke(__proj1, *__i), std::__invoke(__proj2, *__j))) + ++__c2; + } + if (__c2 == 0) + return false; + + // Count number of *__i in [__i, l1) (we can start with 1) + _D1 __c1 = 1; + for (auto __j = _IterOps<_AlgPolicy>::next(__i); __j != __last1; ++__j) { + if (std::__invoke(__pred, std::__invoke(__proj1, *__i), std::__invoke(__proj1, *__j))) + ++__c1; + } + if (__c1 != __c2) + return false; + } + } + + return true; +} + +// 2+1 iterators, predicate. Not used by range algorithms. +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__is_permutation(_ForwardIterator1 __first1, _Sentinel1 __last1, _ForwardIterator2 __first2, + _BinaryPredicate&& __pred) { + // Shorten sequences as much as possible by lopping of any equal prefix. + for (; __first1 != __last1; ++__first1, (void)++__first2) { + if (!__pred(*__first1, *__first2)) + break; + } + + if (__first1 == __last1) + return true; + + // __first1 != __last1 && *__first1 != *__first2 + using _D1 = __iter_diff_t<_ForwardIterator1>; + _D1 __l1 = _IterOps<_AlgPolicy>::distance(__first1, __last1); + if (__l1 == _D1(1)) + return false; + auto __last2 = _IterOps<_AlgPolicy>::next(__first2, __l1); + + return std::__is_permutation_impl<_AlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), + __pred, __identity(), __identity()); +} + +// 2+2 iterators, predicate, non-constant time `distance`. +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__is_permutation(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, + _Pred&& __pred, _Proj1&& __proj1, _Proj2&& __proj2, + /*_ConstTimeDistance=*/false_type) { + // Shorten sequences as much as possible by lopping of any equal prefix. + while (__first1 != __last1 && __first2 != __last2) { + if (!std::__invoke(__pred, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + break; + ++__first1; + ++__first2; + } + + if (__first1 == __last1) + return __first2 == __last2; + if (__first2 == __last2) // Second range is shorter + return false; + + using _D1 = __iter_diff_t<_Iter1>; + _D1 __l1 = _IterOps<_AlgPolicy>::distance(__first1, __last1); + + using _D2 = __iter_diff_t<_Iter2>; + _D2 __l2 = _IterOps<_AlgPolicy>::distance(__first2, __last2); + if (__l1 != __l2) + return false; + + return std::__is_permutation_impl<_AlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), + __pred, __proj1, __proj2); +} + +// 2+2 iterators, predicate, specialization for constant-time `distance` call. +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__is_permutation(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, + _Pred&& __pred, _Proj1&& __proj1, _Proj2&& __proj2, + /*_ConstTimeDistance=*/true_type) { + if (std::distance(__first1, __last1) != std::distance(__first2, __last2)) + return false; + return std::__is_permutation<_AlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), + __pred, __proj1, __proj2, + /*_ConstTimeDistance=*/false_type()); +} + +// 2+2 iterators, predicate +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__is_permutation(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, + _Pred&& __pred, _Proj1&& __proj1, _Proj2&& __proj2) { + return std::__is_permutation<_AlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), + __pred, __proj1, __proj2, + _ConstTimeDistance<_Iter1, _Sent1, _Iter2, _Sent2>()); +} + +// Public interface + +// 2+1 iterators, predicate +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, + _BinaryPredicate __pred) { + static_assert(__is_callable<_BinaryPredicate, decltype(*__first1), decltype(*__first2)>::value, + "The predicate has to be callable"); + + return std::__is_permutation<_ClassicAlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), __pred); +} + +// 2+1 iterators +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) { + return std::is_permutation(__first1, __last1, __first2, __equal_to()); +} + +#if _LIBCPP_STD_VER >= 14 + +// 2+2 iterators +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool is_permutation( + _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) { + return std::__is_permutation<_ClassicAlgPolicy>( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + __equal_to(), + __identity(), + __identity()); +} + +// 2+2 iterators, predicate +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, + _ForwardIterator2 __last2, _BinaryPredicate __pred) { + static_assert(__is_callable<_BinaryPredicate, decltype(*__first1), decltype(*__first2)>::value, + "The predicate has to be callable"); + + return std::__is_permutation<_ClassicAlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), + __pred, __identity(), __identity()); +} + +#endif // _LIBCPP_STD_VER >= 14 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_IS_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/is_sorted.h b/lib/libcxx/include/__algorithm/is_sorted.h new file mode 100644 index 0000000..a321c2c --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_sorted.h @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_SORTED_H +#define _LIBCPP___ALGORITHM_IS_SORTED_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/is_sorted_until.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +is_sorted(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + return _VSTD::__is_sorted_until<__comp_ref_type<_Compare> >(__first, __last, __comp) == __last; +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +is_sorted(_ForwardIterator __first, _ForwardIterator __last) +{ + return _VSTD::is_sorted(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IS_SORTED_H diff --git a/lib/libcxx/include/__algorithm/is_sorted_until.h b/lib/libcxx/include/__algorithm/is_sorted_until.h new file mode 100644 index 0000000..890b936 --- /dev/null +++ b/lib/libcxx/include/__algorithm/is_sorted_until.h @@ -0,0 +1,56 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H +#define _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +__is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + if (__first != __last) + { + _ForwardIterator __i = __first; + while (++__i != __last) + { + if (__comp(*__i, *__first)) + return __i; + __first = __i; + } + } + return __last; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + return _VSTD::__is_sorted_until<__comp_ref_type<_Compare> >(__first, __last, __comp); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +is_sorted_until(_ForwardIterator __first, _ForwardIterator __last) +{ + return _VSTD::is_sorted_until(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H diff --git a/lib/libcxx/include/__algorithm/iter_swap.h b/lib/libcxx/include/__algorithm/iter_swap.h new file mode 100644 index 0000000..44422b5 --- /dev/null +++ b/lib/libcxx/include/__algorithm/iter_swap.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ITER_SWAP_H +#define _LIBCPP___ALGORITHM_ITER_SWAP_H + +#include <__config> +#include <__utility/declval.h> +#include <__utility/swap.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 void iter_swap(_ForwardIterator1 __a, + _ForwardIterator2 __b) + // _NOEXCEPT_(_NOEXCEPT_(swap(*__a, *__b))) + _NOEXCEPT_(_NOEXCEPT_(swap(*std::declval<_ForwardIterator1>(), *std::declval<_ForwardIterator2>()))) { + swap(*__a, *__b); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_ITER_SWAP_H diff --git a/lib/libcxx/include/__algorithm/iterator_operations.h b/lib/libcxx/include/__algorithm/iterator_operations.h new file mode 100644 index 0000000..0029780 --- /dev/null +++ b/lib/libcxx/include/__algorithm/iterator_operations.h @@ -0,0 +1,180 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ITERATOR_OPERATIONS_H +#define _LIBCPP___ALGORITHM_ITERATOR_OPERATIONS_H + +#include <__algorithm/iter_swap.h> +#include <__algorithm/ranges_iterator_concept.h> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/prev.h> +#include <__iterator/readable_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_same.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/declval.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template struct _IterOps; + +#if _LIBCPP_STD_VER >= 20 +struct _RangeAlgPolicy {}; + +template <> +struct _IterOps<_RangeAlgPolicy> { + + template + using __value_type = iter_value_t<_Iter>; + + template + using __iterator_category = ranges::__iterator_concept<_Iter>; + + template + using __difference_type = iter_difference_t<_Iter>; + + static constexpr auto advance = ranges::advance; + static constexpr auto distance = ranges::distance; + static constexpr auto __iter_move = ranges::iter_move; + static constexpr auto iter_swap = ranges::iter_swap; + static constexpr auto next = ranges::next; + static constexpr auto prev = ranges::prev; + static constexpr auto __advance_to = ranges::advance; +}; + +#endif + +struct _ClassicAlgPolicy {}; + +template <> +struct _IterOps<_ClassicAlgPolicy> { + + template + using __value_type = typename iterator_traits<_Iter>::value_type; + + template + using __iterator_category = typename iterator_traits<_Iter>::iterator_category; + + template + using __difference_type = typename iterator_traits<_Iter>::difference_type; + + // advance + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 + static void advance(_Iter& __iter, _Distance __count) { + std::advance(__iter, __count); + } + + // distance + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 + static typename iterator_traits<_Iter>::difference_type distance(_Iter __first, _Iter __last) { + return std::distance(__first, __last); + } + + template + using __deref_t = decltype(*std::declval<_Iter&>()); + + template + using __move_t = decltype(std::move(*std::declval<_Iter&>())); + + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 + static void __validate_iter_reference() { + static_assert(is_same<__deref_t<_Iter>, typename iterator_traits<__remove_cvref_t<_Iter> >::reference>::value, + "It looks like your iterator's `iterator_traits::reference` does not match the return type of " + "dereferencing the iterator, i.e., calling `*it`. This is undefined behavior according to [input.iterators] " + "and can lead to dangling reference issues at runtime, so we are flagging this."); + } + + // iter_move + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 static + // If the result of dereferencing `_Iter` is a reference type, deduce the result of calling `std::move` on it. Note + // that the C++03 mode doesn't support `decltype(auto)` as the return type. + __enable_if_t< + is_reference<__deref_t<_Iter> >::value, + __move_t<_Iter> > + __iter_move(_Iter&& __i) { + __validate_iter_reference<_Iter>(); + + return std::move(*std::forward<_Iter>(__i)); + } + + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 static + // If the result of dereferencing `_Iter` is a value type, deduce the return value of this function to also be a + // value -- otherwise, after `operator*` returns a temporary, this function would return a dangling reference to that + // temporary. Note that the C++03 mode doesn't support `auto` as the return type. + __enable_if_t< + !is_reference<__deref_t<_Iter> >::value, + __deref_t<_Iter> > + __iter_move(_Iter&& __i) { + __validate_iter_reference<_Iter>(); + + return *std::forward<_Iter>(__i); + } + + // iter_swap + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 + static void iter_swap(_Iter1&& __a, _Iter2&& __b) { + std::iter_swap(std::forward<_Iter1>(__a), std::forward<_Iter2>(__b)); + } + + // next + template + _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 + _Iterator next(_Iterator, _Iterator __last) { + return __last; + } + + template + _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 + __remove_cvref_t<_Iter> next(_Iter&& __it, + typename iterator_traits<__remove_cvref_t<_Iter> >::difference_type __n = 1) { + return std::next(std::forward<_Iter>(__it), __n); + } + + // prev + template + _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 + __remove_cvref_t<_Iter> prev(_Iter&& __iter, + typename iterator_traits<__remove_cvref_t<_Iter> >::difference_type __n = 1) { + return std::prev(std::forward<_Iter>(__iter), __n); + } + + template + _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 + void __advance_to(_Iter& __first, _Iter __last) { + __first = __last; + } +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_ITERATOR_OPERATIONS_H diff --git a/lib/libcxx/include/__algorithm/lexicographical_compare.h b/lib/libcxx/include/__algorithm/lexicographical_compare.h new file mode 100644 index 0000000..62b72ed --- /dev/null +++ b/lib/libcxx/include/__algorithm/lexicographical_compare.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H +#define _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +__lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp) +{ + for (; __first2 != __last2; ++__first1, (void) ++__first2) + { + if (__first1 == __last1 || __comp(*__first1, *__first2)) + return true; + if (__comp(*__first2, *__first1)) + return false; + } + return false; +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp) +{ + return _VSTD::__lexicographical_compare<__comp_ref_type<_Compare> >(__first1, __last1, __first2, __last2, __comp); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2) +{ + return _VSTD::lexicographical_compare(__first1, __last1, __first2, __last2, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H diff --git a/lib/libcxx/include/__algorithm/lexicographical_compare_three_way.h b/lib/libcxx/include/__algorithm/lexicographical_compare_three_way.h new file mode 100644 index 0000000..32de97d --- /dev/null +++ b/lib/libcxx/include/__algorithm/lexicographical_compare_three_way.h @@ -0,0 +1,125 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_THREE_WAY_H +#define _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_THREE_WAY_H + +#include <__algorithm/min.h> +#include <__algorithm/three_way_comp_ref_type.h> +#include <__compare/compare_three_way.h> +#include <__compare/ordering.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/common_type.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// Fast path for random access iterators which computes the number of loop iterations up-front and +// then skips the iterator comparisons inside the loop. +template +_LIBCPP_HIDE_FROM_ABI constexpr auto __lexicographical_compare_three_way_fast_path( + _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, _Cmp& __comp) + -> decltype(__comp(*__first1, *__first2)) { + static_assert( + signed_integral<__iter_diff_t<_InputIterator1>>, "Using a non-integral difference_type is undefined behavior."); + static_assert( + signed_integral<__iter_diff_t<_InputIterator2>>, "Using a non-integral difference_type is undefined behavior."); + + using _Len1 = __iter_diff_t<_InputIterator1>; + using _Len2 = __iter_diff_t<_InputIterator2>; + using _Common = common_type_t<_Len1, _Len2>; + + _Len1 __len1 = __last1 - __first1; + _Len2 __len2 = __last2 - __first2; + _Common __min_len = std::min<_Common>(__len1, __len2); + + for (_Common __i = 0; __i < __min_len; ++__i) { + auto __c = __comp(*__first1, *__first2); + if (__c != 0) { + return __c; + } + ++__first1; + ++__first2; + } + + return __len1 <=> __len2; +} + +// Unoptimized implementation which compares the iterators against the end in every loop iteration +template +_LIBCPP_HIDE_FROM_ABI constexpr auto __lexicographical_compare_three_way_slow_path( + _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, _Cmp& __comp) + -> decltype(__comp(*__first1, *__first2)) { + while (true) { + bool __exhausted1 = __first1 == __last1; + bool __exhausted2 = __first2 == __last2; + + if (__exhausted1 || __exhausted2) { + if (!__exhausted1) + return strong_ordering::greater; + if (!__exhausted2) + return strong_ordering::less; + return strong_ordering::equal; + } + + auto __c = __comp(*__first1, *__first2); + if (__c != 0) { + return __c; + } + + ++__first1; + ++__first2; + } +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr auto lexicographical_compare_three_way( + _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, _Cmp __comp) + -> decltype(__comp(*__first1, *__first2)) { + static_assert(__comparison_category, + "The comparator passed to lexicographical_compare_three_way must return a comparison category type."); + static_assert(std::is_copy_constructible_v<_InputIterator1>, "Iterators must be copy constructible."); + static_assert(std::is_copy_constructible_v<_InputIterator2>, "Iterators must be copy constructible."); + __three_way_comp_ref_type<_Cmp> __wrapped_comp_ref(__comp); + if constexpr (__has_random_access_iterator_category<_InputIterator1>::value && + __has_random_access_iterator_category<_InputIterator2>::value) { + return std::__lexicographical_compare_three_way_fast_path( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __wrapped_comp_ref); + } else { + // Unoptimized implementation which compares the iterators against the end in every loop iteration + return std::__lexicographical_compare_three_way_slow_path( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __wrapped_comp_ref); + } +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr auto lexicographical_compare_three_way( + _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { + return std::lexicographical_compare_three_way( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), std::compare_three_way()); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_THREE_WAY_H diff --git a/lib/libcxx/include/__algorithm/lower_bound.h b/lib/libcxx/include/__algorithm/lower_bound.h new file mode 100644 index 0000000..91c3bda --- /dev/null +++ b/lib/libcxx/include/__algorithm/lower_bound.h @@ -0,0 +1,66 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_LOWER_BOUND_H +#define _LIBCPP___ALGORITHM_LOWER_BOUND_H + +#include <__algorithm/comp.h> +#include <__algorithm/half_positive.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_callable.h> +#include <__type_traits/remove_reference.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_Iter __lower_bound(_Iter __first, _Sent __last, const _Type& __value, _Comp& __comp, _Proj& __proj) { + auto __len = _IterOps<_AlgPolicy>::distance(__first, __last); + + while (__len != 0) { + auto __l2 = std::__half_positive(__len); + _Iter __m = __first; + _IterOps<_AlgPolicy>::advance(__m, __l2); + if (std::__invoke(__comp, std::__invoke(__proj, *__m), __value)) { + __first = ++__m; + __len -= __l2 + 1; + } else { + __len = __l2; + } + } + return __first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) { + static_assert(__is_callable<_Compare, decltype(*__first), const _Tp&>::value, + "The comparator has to be callable"); + auto __proj = std::__identity(); + return std::__lower_bound<_ClassicAlgPolicy>(__first, __last, __value, __comp, __proj); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + return std::lower_bound(__first, __last, __value, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_LOWER_BOUND_H diff --git a/lib/libcxx/include/__algorithm/make_heap.h b/lib/libcxx/include/__algorithm/make_heap.h new file mode 100644 index 0000000..eaf9259 --- /dev/null +++ b/lib/libcxx/include/__algorithm/make_heap.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MAKE_HEAP_H +#define _LIBCPP___ALGORITHM_MAKE_HEAP_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/sift_down.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare&& __comp) { + __comp_ref_type<_Compare> __comp_ref = __comp; + + using difference_type = typename iterator_traits<_RandomAccessIterator>::difference_type; + difference_type __n = __last - __first; + if (__n > 1) { + // start from the first parent, there is no need to consider children + for (difference_type __start = (__n - 2) / 2; __start >= 0; --__start) { + std::__sift_down<_AlgPolicy>(__first, __comp_ref, __n, __first + __start); + } + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + std::__make_heap<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::make_heap(std::move(__first), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MAKE_HEAP_H diff --git a/lib/libcxx/include/__algorithm/make_projected.h b/lib/libcxx/include/__algorithm/make_projected.h new file mode 100644 index 0000000..ec85476 --- /dev/null +++ b/lib/libcxx/include/__algorithm/make_projected.h @@ -0,0 +1,113 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MAKE_PROJECTED_H +#define _LIBCPP___ALGORITHM_MAKE_PROJECTED_H + +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__type_traits/decay.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_member_pointer.h> +#include <__type_traits/is_same.h> +#include <__utility/declval.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _ProjectedPred { + _Pred& __pred; // Can be a unary or a binary predicate. + _Proj& __proj; + + _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI _ProjectedPred(_Pred& __pred_arg, _Proj& __proj_arg) + : __pred(__pred_arg), __proj(__proj_arg) {} + + template + typename __invoke_of<_Pred&, + decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_Tp>())) + >::type + _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI operator()(_Tp&& __v) const { + return std::__invoke(__pred, std::__invoke(__proj, std::forward<_Tp>(__v))); + } + + template + typename __invoke_of<_Pred&, + decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_T1>())), + decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_T2>())) + >::type + _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI operator()(_T1&& __lhs, _T2&& __rhs) const { + return std::__invoke(__pred, + std::__invoke(__proj, std::forward<_T1>(__lhs)), + std::__invoke(__proj, std::forward<_T2>(__rhs))); + } + +}; + +template >::value && + __is_identity<__decay_t<_Proj> >::value), + int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ProjectedPred<_Pred, _Proj> +__make_projected(_Pred& __pred, _Proj& __proj) { + return _ProjectedPred<_Pred, _Proj>(__pred, __proj); +} + +// Avoid creating the functor and just use the pristine comparator -- for certain algorithms, this would enable +// optimizations that rely on the type of the comparator. Additionally, this results in less layers of indirection in +// the call stack when the comparator is invoked, even in an unoptimized build. +template >::value && + __is_identity<__decay_t<_Proj> >::value, + int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Pred& __make_projected(_Pred& __pred, _Proj&) { + return __pred; +} + +_LIBCPP_END_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +_LIBCPP_HIDE_FROM_ABI constexpr +decltype(auto) __make_projected_comp(_Comp& __comp, _Proj1& __proj1, _Proj2& __proj2) { + if constexpr (__is_identity>::value && __is_identity>::value && + !is_member_pointer_v>) { + // Avoid creating the lambda and just use the pristine comparator -- for certain algorithms, this would enable + // optimizations that rely on the type of the comparator. + return __comp; + + } else { + return [&](auto&& __lhs, auto&& __rhs) { + return std::invoke(__comp, + std::invoke(__proj1, std::forward(__lhs)), + std::invoke(__proj2, std::forward(__rhs))); + }; + } +} + +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_MAKE_PROJECTED_H diff --git a/lib/libcxx/include/__algorithm/max.h b/lib/libcxx/include/__algorithm/max.h new file mode 100644 index 0000000..5d8e64c --- /dev/null +++ b/lib/libcxx/include/__algorithm/max.h @@ -0,0 +1,71 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MAX_H +#define _LIBCPP___ALGORITHM_MAX_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/max_element.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp& +max(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b, _Compare __comp) +{ + return __comp(__a, __b) ? __b : __a; +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp& +max(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b) +{ + return _VSTD::max(__a, __b, __less<>()); +} + +#ifndef _LIBCPP_CXX03_LANG + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp +max(initializer_list<_Tp> __t, _Compare __comp) +{ + return *_VSTD::__max_element<__comp_ref_type<_Compare> >(__t.begin(), __t.end(), __comp); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp +max(initializer_list<_Tp> __t) +{ + return *_VSTD::max_element(__t.begin(), __t.end(), __less<>()); +} + +#endif // _LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MAX_H diff --git a/lib/libcxx/include/__algorithm/max_element.h b/lib/libcxx/include/__algorithm/max_element.h new file mode 100644 index 0000000..8fd52c7 --- /dev/null +++ b/lib/libcxx/include/__algorithm/max_element.h @@ -0,0 +1,56 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MAX_ELEMENT_H +#define _LIBCPP___ALGORITHM_MAX_ELEMENT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +__max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + static_assert(__has_forward_iterator_category<_ForwardIterator>::value, + "std::max_element requires a ForwardIterator"); + if (__first != __last) + { + _ForwardIterator __i = __first; + while (++__i != __last) + if (__comp(*__first, *__i)) + __first = __i; + } + return __first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + return _VSTD::__max_element<__comp_ref_type<_Compare> >(__first, __last, __comp); +} + + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +max_element(_ForwardIterator __first, _ForwardIterator __last) +{ + return _VSTD::max_element(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_MAX_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/merge.h b/lib/libcxx/include/__algorithm/merge.h new file mode 100644 index 0000000..7ee7aaa --- /dev/null +++ b/lib/libcxx/include/__algorithm/merge.h @@ -0,0 +1,68 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MERGE_H +#define _LIBCPP___ALGORITHM_MERGE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/copy.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +__merge(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp) +{ + for (; __first1 != __last1; ++__result) + { + if (__first2 == __last2) + return _VSTD::copy(__first1, __last1, __result); + if (__comp(*__first2, *__first1)) + { + *__result = *__first2; + ++__first2; + } + else + { + *__result = *__first1; + ++__first1; + } + } + return _VSTD::copy(__first2, __last2, __result); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +merge(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp) +{ + return _VSTD::__merge<__comp_ref_type<_Compare> >(__first1, __last1, __first2, __last2, __result, __comp); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +merge(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result) +{ + return _VSTD::merge(__first1, __last1, __first2, __last2, __result, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_MERGE_H diff --git a/lib/libcxx/include/__algorithm/min.h b/lib/libcxx/include/__algorithm/min.h new file mode 100644 index 0000000..3c0debd --- /dev/null +++ b/lib/libcxx/include/__algorithm/min.h @@ -0,0 +1,71 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MIN_H +#define _LIBCPP___ALGORITHM_MIN_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/min_element.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp& +min(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b, _Compare __comp) +{ + return __comp(__b, __a) ? __b : __a; +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp& +min(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b) +{ + return _VSTD::min(__a, __b, __less<>()); +} + +#ifndef _LIBCPP_CXX03_LANG + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp +min(initializer_list<_Tp> __t, _Compare __comp) +{ + return *_VSTD::__min_element<__comp_ref_type<_Compare> >(__t.begin(), __t.end(), __comp); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp +min(initializer_list<_Tp> __t) +{ + return *_VSTD::min_element(__t.begin(), __t.end(), __less<>()); +} + +#endif // _LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MIN_H diff --git a/lib/libcxx/include/__algorithm/min_element.h b/lib/libcxx/include/__algorithm/min_element.h new file mode 100644 index 0000000..45f3e85 --- /dev/null +++ b/lib/libcxx/include/__algorithm/min_element.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MIN_ELEMENT_H +#define _LIBCPP___ALGORITHM_MIN_ELEMENT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_callable.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Iter __min_element(_Iter __first, _Sent __last, _Comp __comp, _Proj& __proj) { + if (__first == __last) + return __first; + + _Iter __i = __first; + while (++__i != __last) + if (std::__invoke(__comp, std::__invoke(__proj, *__i), std::__invoke(__proj, *__first))) + __first = __i; + + return __first; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Iter __min_element(_Iter __first, _Sent __last, _Comp __comp) { + auto __proj = __identity(); + return std::__min_element<_Comp>(std::move(__first), std::move(__last), __comp, __proj); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) +{ + static_assert(__has_forward_iterator_category<_ForwardIterator>::value, + "std::min_element requires a ForwardIterator"); + static_assert(__is_callable<_Compare, decltype(*__first), decltype(*__first)>::value, + "The comparator has to be callable"); + + return std::__min_element<__comp_ref_type<_Compare> >(std::move(__first), std::move(__last), __comp); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +min_element(_ForwardIterator __first, _ForwardIterator __last) +{ + return _VSTD::min_element(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MIN_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/min_max_result.h b/lib/libcxx/include/__algorithm/min_max_result.h new file mode 100644 index 0000000..ef2d990 --- /dev/null +++ b/lib/libcxx/include/__algorithm/min_max_result.h @@ -0,0 +1,56 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MIN_MAX_RESULT_H +#define _LIBCPP___ALGORITHM_MIN_MAX_RESULT_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +struct min_max_result { + _LIBCPP_NO_UNIQUE_ADDRESS _T1 min; + _LIBCPP_NO_UNIQUE_ADDRESS _T1 max; + + template + requires convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr operator min_max_result<_T2>() const & { + return {min, max}; + } + + template + requires convertible_to<_T1, _T2> + _LIBCPP_HIDE_FROM_ABI constexpr operator min_max_result<_T2>() && { + return {std::move(min), std::move(max)}; + } +}; + +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MIN_MAX_RESULT_H diff --git a/lib/libcxx/include/__algorithm/minmax.h b/lib/libcxx/include/__algorithm/minmax.h new file mode 100644 index 0000000..bdcf57b --- /dev/null +++ b/lib/libcxx/include/__algorithm/minmax.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MINMAX_H +#define _LIBCPP___ALGORITHM_MINMAX_H + +#include <__algorithm/comp.h> +#include <__algorithm/minmax_element.h> +#include <__config> +#include <__functional/identity.h> +#include <__type_traits/is_callable.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair +minmax(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b, _Compare __comp) +{ + return __comp(__b, __a) ? pair(__b, __a) : + pair(__a, __b); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair +minmax(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b) +{ + return std::minmax(__a, __b, __less<>()); +} + +#ifndef _LIBCPP_CXX03_LANG + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Tp, _Tp> minmax(initializer_list<_Tp> __t, _Compare __comp) { + static_assert(__is_callable<_Compare, _Tp, _Tp>::value, "The comparator has to be callable"); + __identity __proj; + auto __ret = std::__minmax_element_impl(__t.begin(), __t.end(), __comp, __proj); + return pair<_Tp, _Tp>(*__ret.first, *__ret.second); +} + +template +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Tp, _Tp> +minmax(initializer_list<_Tp> __t) +{ + return std::minmax(__t, __less<>()); +} + +#endif // _LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_MINMAX_H diff --git a/lib/libcxx/include/__algorithm/minmax_element.h b/lib/libcxx/include/__algorithm/minmax_element.h new file mode 100644 index 0000000..5bcaf83 --- /dev/null +++ b/lib/libcxx/include/__algorithm/minmax_element.h @@ -0,0 +1,102 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H +#define _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H + +#include <__algorithm/comp.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_callable.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class _MinmaxElementLessFunc { + _Comp& __comp_; + _Proj& __proj_; + +public: + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR + _MinmaxElementLessFunc(_Comp& __comp, _Proj& __proj) : __comp_(__comp), __proj_(__proj) {} + + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 + bool operator()(_Iter& __it1, _Iter& __it2) { + return std::__invoke(__comp_, std::__invoke(__proj_, *__it1), std::__invoke(__proj_, *__it2)); + } +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter, _Iter> __minmax_element_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __less = _MinmaxElementLessFunc<_Comp, _Proj>(__comp, __proj); + + pair<_Iter, _Iter> __result(__first, __first); + if (__first == __last || ++__first == __last) + return __result; + + if (__less(__first, __result.first)) + __result.first = __first; + else + __result.second = __first; + + while (++__first != __last) { + _Iter __i = __first; + if (++__first == __last) { + if (__less(__i, __result.first)) + __result.first = __i; + else if (!__less(__i, __result.second)) + __result.second = __i; + return __result; + } + + if (__less(__first, __i)) { + if (__less(__first, __result.first)) + __result.first = __first; + if (!__less(__i, __result.second)) + __result.second = __i; + } else { + if (__less(__i, __result.first)) + __result.first = __i; + if (!__less(__first, __result.second)) + __result.second = __first; + } + } + + return __result; +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_ForwardIterator, _ForwardIterator> +minmax_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) { + static_assert(__has_forward_iterator_category<_ForwardIterator>::value, + "std::minmax_element requires a ForwardIterator"); + static_assert(__is_callable<_Compare, decltype(*__first), decltype(*__first)>::value, + "The comparator has to be callable"); + auto __proj = __identity(); + return std::__minmax_element_impl(__first, __last, __comp, __proj); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_ForwardIterator, _ForwardIterator> minmax_element(_ForwardIterator __first, _ForwardIterator __last) { + return std::minmax_element(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/mismatch.h b/lib/libcxx/include/__algorithm/mismatch.h new file mode 100644 index 0000000..e5b014f --- /dev/null +++ b/lib/libcxx/include/__algorithm/mismatch.h @@ -0,0 +1,63 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MISMATCH_H +#define _LIBCPP___ALGORITHM_MISMATCH_H + +#include <__algorithm/comp.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InputIterator1, _InputIterator2> + mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) { + for (; __first1 != __last1; ++__first1, (void)++__first2) + if (!__pred(*__first1, *__first2)) + break; + return pair<_InputIterator1, _InputIterator2>(__first1, __first2); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InputIterator1, _InputIterator2> + mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) { + return std::mismatch(__first1, __last1, __first2, __equal_to()); +} + +#if _LIBCPP_STD_VER >= 14 +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InputIterator1, _InputIterator2> + mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, + _BinaryPredicate __pred) { + for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2) + if (!__pred(*__first1, *__first2)) + break; + return pair<_InputIterator1, _InputIterator2>(__first1, __first2); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InputIterator1, _InputIterator2> + mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { + return std::mismatch(__first1, __last1, __first2, __last2, __equal_to()); +} +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_MISMATCH_H diff --git a/lib/libcxx/include/__algorithm/move.h b/lib/libcxx/include/__algorithm/move.h new file mode 100644 index 0000000..01aeef4 --- /dev/null +++ b/lib/libcxx/include/__algorithm/move.h @@ -0,0 +1,129 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MOVE_H +#define _LIBCPP___ALGORITHM_MOVE_H + +#include <__algorithm/copy_move_common.h> +#include <__algorithm/for_each_segment.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min.h> +#include <__config> +#include <__iterator/segmented_iterator.h> +#include <__type_traits/common_type.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> +__move(_InIter __first, _Sent __last, _OutIter __result); + +template +struct __move_loop { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + while (__first != __last) { + *__result = _IterOps<_AlgPolicy>::__iter_move(__first); + ++__first; + ++__result; + } + return std::make_pair(std::move(__first), std::move(__result)); + } + + template + struct _MoveSegment { + using _Traits = __segmented_iterator_traits<_InIter>; + + _OutIter& __result_; + + _LIBCPP_HIDE_FROM_ABI _MoveSegment(_OutIter& __result) : __result_(__result) {} + + _LIBCPP_HIDE_FROM_ABI void + operator()(typename _Traits::__local_iterator __lfirst, typename _Traits::__local_iterator __llast) { + __result_ = std::__move<_AlgPolicy>(__lfirst, __llast, std::move(__result_)).second; + } + }; + + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + std::__for_each_segment(__first, __last, _MoveSegment<_InIter, _OutIter>(__result)); + return std::make_pair(__last, std::move(__result)); + } + + template ::value && + !__is_segmented_iterator<_InIter>::value && __is_segmented_iterator<_OutIter>::value, + int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_OutIter>; + using _DiffT = typename common_type<__iter_diff_t<_InIter>, __iter_diff_t<_OutIter> >::type; + + if (__first == __last) + return std::make_pair(std::move(__first), std::move(__result)); + + auto __local_first = _Traits::__local(__result); + auto __segment_iterator = _Traits::__segment(__result); + while (true) { + auto __local_last = _Traits::__end(__segment_iterator); + auto __size = std::min<_DiffT>(__local_last - __local_first, __last - __first); + auto __iters = std::__move<_AlgPolicy>(__first, __first + __size, __local_first); + __first = std::move(__iters.first); + + if (__first == __last) + return std::make_pair(std::move(__first), _Traits::__compose(__segment_iterator, std::move(__iters.second))); + + __local_first = _Traits::__begin(++__segment_iterator); + } + } +}; + +struct __move_trivial { + // At this point, the iterators have been unwrapped so any `contiguous_iterator` has been unwrapped to a pointer. + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> + operator()(_In* __first, _In* __last, _Out* __result) const { + return std::__copy_trivial_impl(__first, __last, __result); + } +}; + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> +__move(_InIter __first, _Sent __last, _OutIter __result) { + return std::__dispatch_copy_or_move<_AlgPolicy, __move_loop<_AlgPolicy>, __move_trivial>( + std::move(__first), std::move(__last), std::move(__result)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator +move(_InputIterator __first, _InputIterator __last, _OutputIterator __result) { + static_assert(is_copy_constructible<_InputIterator>::value, "Iterators has to be copy constructible."); + static_assert(is_copy_constructible<_OutputIterator>::value, "The output iterator has to be copy constructible."); + + return std::__move<_ClassicAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)).second; +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MOVE_H diff --git a/lib/libcxx/include/__algorithm/move_backward.h b/lib/libcxx/include/__algorithm/move_backward.h new file mode 100644 index 0000000..e396abf --- /dev/null +++ b/lib/libcxx/include/__algorithm/move_backward.h @@ -0,0 +1,139 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_MOVE_BACKWARD_H +#define _LIBCPP___ALGORITHM_MOVE_BACKWARD_H + +#include <__algorithm/copy_move_common.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min.h> +#include <__config> +#include <__iterator/segmented_iterator.h> +#include <__type_traits/common_type.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_BidirectionalIterator1, _BidirectionalIterator2> +__move_backward(_BidirectionalIterator1 __first, _Sentinel __last, _BidirectionalIterator2 __result); + +template +struct __move_backward_loop { + template + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + auto __last_iter = _IterOps<_AlgPolicy>::next(__first, __last); + auto __original_last_iter = __last_iter; + + while (__first != __last_iter) { + *--__result = _IterOps<_AlgPolicy>::__iter_move(--__last_iter); + } + + return std::make_pair(std::move(__original_last_iter), std::move(__result)); + } + + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_InIter>; + auto __sfirst = _Traits::__segment(__first); + auto __slast = _Traits::__segment(__last); + if (__sfirst == __slast) { + auto __iters = + std::__move_backward<_AlgPolicy>(_Traits::__local(__first), _Traits::__local(__last), std::move(__result)); + return std::make_pair(__last, __iters.second); + } + + __result = + std::__move_backward<_AlgPolicy>(_Traits::__begin(__slast), _Traits::__local(__last), std::move(__result)) + .second; + --__slast; + while (__sfirst != __slast) { + __result = + std::__move_backward<_AlgPolicy>(_Traits::__begin(__slast), _Traits::__end(__slast), std::move(__result)) + .second; + --__slast; + } + __result = std::__move_backward<_AlgPolicy>(_Traits::__local(__first), _Traits::__end(__slast), std::move(__result)) + .second; + return std::make_pair(__last, std::move(__result)); + } + + template ::value && + !__is_segmented_iterator<_InIter>::value && __is_segmented_iterator<_OutIter>::value, + int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_InIter, _OutIter> + operator()(_InIter __first, _InIter __last, _OutIter __result) const { + using _Traits = __segmented_iterator_traits<_OutIter>; + using _DiffT = typename common_type<__iter_diff_t<_InIter>, __iter_diff_t<_OutIter> >::type; + + // When the range contains no elements, __result might not be a valid iterator + if (__first == __last) + return std::make_pair(__first, __result); + + auto __orig_last = __last; + + auto __local_last = _Traits::__local(__result); + auto __segment_iterator = _Traits::__segment(__result); + while (true) { + auto __local_first = _Traits::__begin(__segment_iterator); + auto __size = std::min<_DiffT>(__local_last - __local_first, __last - __first); + auto __iter = std::__move_backward<_AlgPolicy>(__last - __size, __last, __local_last).second; + __last -= __size; + + if (__first == __last) + return std::make_pair(std::move(__orig_last), _Traits::__compose(__segment_iterator, std::move(__iter))); + + __local_last = _Traits::__end(--__segment_iterator); + } + } +}; + +struct __move_backward_trivial { + // At this point, the iterators have been unwrapped so any `contiguous_iterator` has been unwrapped to a pointer. + template ::value, int> = 0> + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair<_In*, _Out*> + operator()(_In* __first, _In* __last, _Out* __result) const { + return std::__copy_backward_trivial_impl(__first, __last, __result); + } +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_BidirectionalIterator1, _BidirectionalIterator2> +__move_backward(_BidirectionalIterator1 __first, _Sentinel __last, _BidirectionalIterator2 __result) { + static_assert(std::is_copy_constructible<_BidirectionalIterator1>::value && + std::is_copy_constructible<_BidirectionalIterator1>::value, "Iterators must be copy constructible."); + + return std::__dispatch_copy_or_move<_AlgPolicy, __move_backward_loop<_AlgPolicy>, __move_backward_trivial>( + std::move(__first), std::move(__last), std::move(__result)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _BidirectionalIterator2 +move_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last, _BidirectionalIterator2 __result) { + return std::__move_backward<_ClassicAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)).second; +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_MOVE_BACKWARD_H diff --git a/lib/libcxx/include/__algorithm/next_permutation.h b/lib/libcxx/include/__algorithm/next_permutation.h new file mode 100644 index 0000000..d89768d --- /dev/null +++ b/lib/libcxx/include/__algorithm/next_permutation.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H +#define _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/reverse.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_BidirectionalIterator, bool> +__next_permutation(_BidirectionalIterator __first, _Sentinel __last, _Compare&& __comp) +{ + using _Result = pair<_BidirectionalIterator, bool>; + + _BidirectionalIterator __last_iter = _IterOps<_AlgPolicy>::next(__first, __last); + _BidirectionalIterator __i = __last_iter; + if (__first == __last || __first == --__i) + return _Result(std::move(__last_iter), false); + + while (true) + { + _BidirectionalIterator __ip1 = __i; + if (__comp(*--__i, *__ip1)) + { + _BidirectionalIterator __j = __last_iter; + while (!__comp(*__i, *--__j)) + ; + _IterOps<_AlgPolicy>::iter_swap(__i, __j); + std::__reverse<_AlgPolicy>(__ip1, __last_iter); + return _Result(std::move(__last_iter), true); + } + if (__i == __first) + { + std::__reverse<_AlgPolicy>(__first, __last_iter); + return _Result(std::move(__last_iter), false); + } + } +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp) +{ + return std::__next_permutation<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), static_cast<__comp_ref_type<_Compare> >(__comp)).second; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last) +{ + return _VSTD::next_permutation(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/none_of.h b/lib/libcxx/include/__algorithm/none_of.h new file mode 100644 index 0000000..19357eb --- /dev/null +++ b/lib/libcxx/include/__algorithm/none_of.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_NONE_OF_H +#define _LIBCPP___ALGORITHM_NONE_OF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 bool +none_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) { + for (; __first != __last; ++__first) + if (__pred(*__first)) + return false; + return true; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_NONE_OF_H diff --git a/lib/libcxx/include/__algorithm/nth_element.h b/lib/libcxx/include/__algorithm/nth_element.h new file mode 100644 index 0000000..dbacf58 --- /dev/null +++ b/lib/libcxx/include/__algorithm/nth_element.h @@ -0,0 +1,256 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_NTH_ELEMENT_H +#define _LIBCPP___ALGORITHM_NTH_ELEMENT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/sort.h> +#include <__config> +#include <__debug_utils/randomize_range.h> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool +__nth_element_find_guard(_RandomAccessIterator& __i, _RandomAccessIterator& __j, + _RandomAccessIterator __m, _Compare __comp) +{ + // manually guard downward moving __j against __i + while (true) { + if (__i == --__j) { + return false; + } + if (__comp(*__j, *__m)) { + return true; // found guard for downward moving __j, now use unguarded partition + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void +__nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp) +{ + using _Ops = _IterOps<_AlgPolicy>; + + // _Compare is known to be a reference type + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + const difference_type __limit = 7; + while (true) + { + if (__nth == __last) + return; + difference_type __len = __last - __first; + switch (__len) + { + case 0: + case 1: + return; + case 2: + if (__comp(*--__last, *__first)) + _Ops::iter_swap(__first, __last); + return; + case 3: + { + _RandomAccessIterator __m = __first; + std::__sort3<_AlgPolicy, _Compare>(__first, ++__m, --__last, __comp); + return; + } + } + if (__len <= __limit) + { + std::__selection_sort<_AlgPolicy, _Compare>(__first, __last, __comp); + return; + } + // __len > __limit >= 3 + _RandomAccessIterator __m = __first + __len/2; + _RandomAccessIterator __lm1 = __last; + unsigned __n_swaps = std::__sort3<_AlgPolicy, _Compare>(__first, __m, --__lm1, __comp); + // *__m is median + // partition [__first, __m) < *__m and *__m <= [__m, __last) + // (this inhibits tossing elements equivalent to __m around unnecessarily) + _RandomAccessIterator __i = __first; + _RandomAccessIterator __j = __lm1; + // j points beyond range to be tested, *__lm1 is known to be <= *__m + // The search going up is known to be guarded but the search coming down isn't. + // Prime the downward search with a guard. + if (!__comp(*__i, *__m)) // if *__first == *__m + { + // *__first == *__m, *__first doesn't go in first part + if (_VSTD::__nth_element_find_guard<_Compare>(__i, __j, __m, __comp)) { + _Ops::iter_swap(__i, __j); + ++__n_swaps; + } else { + // *__first == *__m, *__m <= all other elements + // Partition instead into [__first, __i) == *__first and *__first < [__i, __last) + ++__i; // __first + 1 + __j = __last; + if (!__comp(*__first, *--__j)) { // we need a guard if *__first == *(__last-1) + while (true) { + if (__i == __j) { + return; // [__first, __last) all equivalent elements + } else if (__comp(*__first, *__i)) { + _Ops::iter_swap(__i, __j); + ++__n_swaps; + ++__i; + break; + } + ++__i; + } + } + // [__first, __i) == *__first and *__first < [__j, __last) and __j == __last - 1 + if (__i == __j) { + return; + } + while (true) { + while (!__comp(*__first, *__i)) + ++__i; + while (__comp(*__first, *--__j)) + ; + if (__i >= __j) + break; + _Ops::iter_swap(__i, __j); + ++__n_swaps; + ++__i; + } + // [__first, __i) == *__first and *__first < [__i, __last) + // The first part is sorted, + if (__nth < __i) { + return; + } + // __nth_element the second part + // _VSTD::__nth_element<_Compare>(__i, __nth, __last, __comp); + __first = __i; + continue; + } + } + ++__i; + // j points beyond range to be tested, *__lm1 is known to be <= *__m + // if not yet partitioned... + if (__i < __j) + { + // known that *(__i - 1) < *__m + while (true) + { + // __m still guards upward moving __i + while (__comp(*__i, *__m)) + ++__i; + // It is now known that a guard exists for downward moving __j + while (!__comp(*--__j, *__m)) + ; + if (__i >= __j) + break; + _Ops::iter_swap(__i, __j); + ++__n_swaps; + // It is known that __m != __j + // If __m just moved, follow it + if (__m == __i) + __m = __j; + ++__i; + } + } + // [__first, __i) < *__m and *__m <= [__i, __last) + if (__i != __m && __comp(*__m, *__i)) + { + _Ops::iter_swap(__i, __m); + ++__n_swaps; + } + // [__first, __i) < *__i and *__i <= [__i+1, __last) + if (__nth == __i) + return; + if (__n_swaps == 0) + { + // We were given a perfectly partitioned sequence. Coincidence? + if (__nth < __i) + { + // Check for [__first, __i) already sorted + __j = __m = __first; + while (true) { + if (++__j == __i) { + // [__first, __i) sorted + return; + } + if (__comp(*__j, *__m)) { + // not yet sorted, so sort + break; + } + __m = __j; + } + } + else + { + // Check for [__i, __last) already sorted + __j = __m = __i; + while (true) { + if (++__j == __last) { + // [__i, __last) sorted + return; + } + if (__comp(*__j, *__m)) { + // not yet sorted, so sort + break; + } + __m = __j; + } + } + } + // __nth_element on range containing __nth + if (__nth < __i) + { + // _VSTD::__nth_element<_Compare>(__first, __nth, __i, __comp); + __last = __i; + } + else + { + // _VSTD::__nth_element<_Compare>(__i+1, __nth, __last, __comp); + __first = ++__i; + } + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void __nth_element_impl(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, + _Compare& __comp) { + if (__nth == __last) + return; + + std::__debug_randomize_range<_AlgPolicy>(__first, __last); + + std::__nth_element<_AlgPolicy, __comp_ref_type<_Compare> >(__first, __nth, __last, __comp); + + std::__debug_randomize_range<_AlgPolicy>(__first, __nth); + if (__nth != __last) { + std::__debug_randomize_range<_AlgPolicy>(++__nth, __last); + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, + _Compare __comp) { + std::__nth_element_impl<_ClassicAlgPolicy>(std::move(__first), std::move(__nth), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last) { + std::nth_element(std::move(__first), std::move(__nth), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_NTH_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/partial_sort.h b/lib/libcxx/include/__algorithm/partial_sort.h new file mode 100644 index 0000000..56bc905 --- /dev/null +++ b/lib/libcxx/include/__algorithm/partial_sort.h @@ -0,0 +1,95 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PARTIAL_SORT_H +#define _LIBCPP___ALGORITHM_PARTIAL_SORT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_heap.h> +#include <__algorithm/sift_down.h> +#include <__algorithm/sort_heap.h> +#include <__config> +#include <__debug_utils/randomize_range.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_RandomAccessIterator __partial_sort_impl( + _RandomAccessIterator __first, _RandomAccessIterator __middle, _Sentinel __last, _Compare&& __comp) { + if (__first == __middle) { + return _IterOps<_AlgPolicy>::next(__middle, __last); + } + + std::__make_heap<_AlgPolicy>(__first, __middle, __comp); + + typename iterator_traits<_RandomAccessIterator>::difference_type __len = __middle - __first; + _RandomAccessIterator __i = __middle; + for (; __i != __last; ++__i) + { + if (__comp(*__i, *__first)) + { + _IterOps<_AlgPolicy>::iter_swap(__i, __first); + std::__sift_down<_AlgPolicy>(__first, __comp, __len, __first); + } + } + std::__sort_heap<_AlgPolicy>(std::move(__first), std::move(__middle), __comp); + + return __i; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_RandomAccessIterator __partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _Sentinel __last, + _Compare& __comp) { + if (__first == __middle) + return _IterOps<_AlgPolicy>::next(__middle, __last); + + std::__debug_randomize_range<_AlgPolicy>(__first, __last); + + auto __last_iter = + std::__partial_sort_impl<_AlgPolicy>(__first, __middle, __last, static_cast<__comp_ref_type<_Compare> >(__comp)); + + std::__debug_randomize_range<_AlgPolicy>(__middle, __last); + + return __last_iter; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last, + _Compare __comp) +{ + static_assert(std::is_copy_constructible<_RandomAccessIterator>::value, "Iterators must be copy constructible."); + static_assert(std::is_copy_assignable<_RandomAccessIterator>::value, "Iterators must be copy assignable."); + + (void)std::__partial_sort<_ClassicAlgPolicy>(std::move(__first), std::move(__middle), std::move(__last), __comp); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last) +{ + _VSTD::partial_sort(__first, __middle, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PARTIAL_SORT_H diff --git a/lib/libcxx/include/__algorithm/partial_sort_copy.h b/lib/libcxx/include/__algorithm/partial_sort_copy.h new file mode 100644 index 0000000..b9635c5 --- /dev/null +++ b/lib/libcxx/include/__algorithm/partial_sort_copy.h @@ -0,0 +1,87 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H +#define _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_heap.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/sift_down.h> +#include <__algorithm/sort_heap.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_callable.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_InputIterator, _RandomAccessIterator> +__partial_sort_copy(_InputIterator __first, _Sentinel1 __last, + _RandomAccessIterator __result_first, _Sentinel2 __result_last, + _Compare&& __comp, _Proj1&& __proj1, _Proj2&& __proj2) +{ + _RandomAccessIterator __r = __result_first; + auto&& __projected_comp = std::__make_projected(__comp, __proj2); + + if (__r != __result_last) + { + for (; __first != __last && __r != __result_last; ++__first, (void) ++__r) + *__r = *__first; + std::__make_heap<_AlgPolicy>(__result_first, __r, __projected_comp); + typename iterator_traits<_RandomAccessIterator>::difference_type __len = __r - __result_first; + for (; __first != __last; ++__first) + if (std::__invoke(__comp, std::__invoke(__proj1, *__first), std::__invoke(__proj2, *__result_first))) { + *__result_first = *__first; + std::__sift_down<_AlgPolicy>(__result_first, __projected_comp, __len, __result_first); + } + std::__sort_heap<_AlgPolicy>(__result_first, __r, __projected_comp); + } + + return pair<_InputIterator, _RandomAccessIterator>( + _IterOps<_AlgPolicy>::next(std::move(__first), std::move(__last)), std::move(__r)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_RandomAccessIterator +partial_sort_copy(_InputIterator __first, _InputIterator __last, + _RandomAccessIterator __result_first, _RandomAccessIterator __result_last, _Compare __comp) +{ + static_assert(__is_callable<_Compare, decltype(*__first), decltype(*__result_first)>::value, + "Comparator has to be callable"); + + auto __result = std::__partial_sort_copy<_ClassicAlgPolicy>(__first, __last, __result_first, __result_last, + static_cast<__comp_ref_type<_Compare> >(__comp), __identity(), __identity()); + return __result.second; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_RandomAccessIterator +partial_sort_copy(_InputIterator __first, _InputIterator __last, + _RandomAccessIterator __result_first, _RandomAccessIterator __result_last) +{ + return _VSTD::partial_sort_copy(__first, __last, __result_first, __result_last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H diff --git a/lib/libcxx/include/__algorithm/partition.h b/lib/libcxx/include/__algorithm/partition.h new file mode 100644 index 0000000..a58dd64 --- /dev/null +++ b/lib/libcxx/include/__algorithm/partition.h @@ -0,0 +1,97 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PARTITION_H +#define _LIBCPP___ALGORITHM_PARTITION_H + +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_ForwardIterator, _ForwardIterator> +__partition_impl(_ForwardIterator __first, _Sentinel __last, _Predicate __pred, forward_iterator_tag) +{ + while (true) + { + if (__first == __last) + return std::make_pair(std::move(__first), std::move(__first)); + if (!__pred(*__first)) + break; + ++__first; + } + + _ForwardIterator __p = __first; + while (++__p != __last) + { + if (__pred(*__p)) + { + _IterOps<_AlgPolicy>::iter_swap(__first, __p); + ++__first; + } + } + return std::make_pair(std::move(__first), std::move(__p)); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_BidirectionalIterator, _BidirectionalIterator> +__partition_impl(_BidirectionalIterator __first, _Sentinel __sentinel, _Predicate __pred, + bidirectional_iterator_tag) +{ + _BidirectionalIterator __original_last = _IterOps<_AlgPolicy>::next(__first, __sentinel); + _BidirectionalIterator __last = __original_last; + + while (true) + { + while (true) + { + if (__first == __last) + return std::make_pair(std::move(__first), std::move(__original_last)); + if (!__pred(*__first)) + break; + ++__first; + } + do + { + if (__first == --__last) + return std::make_pair(std::move(__first), std::move(__original_last)); + } while (!__pred(*__last)); + _IterOps<_AlgPolicy>::iter_swap(__first, __last); + ++__first; + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +pair<_ForwardIterator, _ForwardIterator> __partition( + _ForwardIterator __first, _Sentinel __last, _Predicate&& __pred, _IterCategory __iter_category) { + return std::__partition_impl<__remove_cvref_t<_Predicate>&, _AlgPolicy>( + std::move(__first), std::move(__last), __pred, __iter_category); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator +partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) +{ + using _IterCategory = typename iterator_traits<_ForwardIterator>::iterator_category; + auto __result = std::__partition<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __pred, _IterCategory()); + return __result.first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PARTITION_H diff --git a/lib/libcxx/include/__algorithm/partition_copy.h b/lib/libcxx/include/__algorithm/partition_copy.h new file mode 100644 index 0000000..ff8826a --- /dev/null +++ b/lib/libcxx/include/__algorithm/partition_copy.h @@ -0,0 +1,47 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PARTITION_COPY_H +#define _LIBCPP___ALGORITHM_PARTITION_COPY_H + +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_OutputIterator1, _OutputIterator2> +partition_copy(_InputIterator __first, _InputIterator __last, + _OutputIterator1 __out_true, _OutputIterator2 __out_false, + _Predicate __pred) +{ + for (; __first != __last; ++__first) + { + if (__pred(*__first)) + { + *__out_true = *__first; + ++__out_true; + } + else + { + *__out_false = *__first; + ++__out_false; + } + } + return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H diff --git a/lib/libcxx/include/__algorithm/partition_point.h b/lib/libcxx/include/__algorithm/partition_point.h new file mode 100644 index 0000000..6ede71a --- /dev/null +++ b/lib/libcxx/include/__algorithm/partition_point.h @@ -0,0 +1,48 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PARTITION_POINT_H +#define _LIBCPP___ALGORITHM_PARTITION_POINT_H + +#include <__algorithm/half_positive.h> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +partition_point(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) +{ + typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type; + difference_type __len = _VSTD::distance(__first, __last); + while (__len != 0) + { + difference_type __l2 = _VSTD::__half_positive(__len); + _ForwardIterator __m = __first; + _VSTD::advance(__m, __l2); + if (__pred(*__m)) + { + __first = ++__m; + __len -= __l2 + 1; + } + else + __len = __l2; + } + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PARTITION_POINT_H diff --git a/lib/libcxx/include/__algorithm/pop_heap.h b/lib/libcxx/include/__algorithm/pop_heap.h new file mode 100644 index 0000000..033af6f --- /dev/null +++ b/lib/libcxx/include/__algorithm/pop_heap.h @@ -0,0 +1,78 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_POP_HEAP_H +#define _LIBCPP___ALGORITHM_POP_HEAP_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/push_heap.h> +#include <__algorithm/sift_down.h> +#include <__assert> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare& __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len) { + _LIBCPP_ASSERT_UNCATEGORIZED(__len > 0, "The heap given to pop_heap must be non-empty"); + + __comp_ref_type<_Compare> __comp_ref = __comp; + + using value_type = typename iterator_traits<_RandomAccessIterator>::value_type; + if (__len > 1) { + value_type __top = _IterOps<_AlgPolicy>::__iter_move(__first); // create a hole at __first + _RandomAccessIterator __hole = std::__floyd_sift_down<_AlgPolicy>(__first, __comp_ref, __len); + --__last; + + if (__hole == __last) { + *__hole = std::move(__top); + } else { + *__hole = _IterOps<_AlgPolicy>::__iter_move(__last); + ++__hole; + *__last = std::move(__top); + std::__sift_up<_AlgPolicy>(__first, __hole, __comp_ref, __hole - __first); + } + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + static_assert(std::is_copy_constructible<_RandomAccessIterator>::value, "Iterators must be copy constructible."); + static_assert(std::is_copy_assignable<_RandomAccessIterator>::value, "Iterators must be copy assignable."); + + typename iterator_traits<_RandomAccessIterator>::difference_type __len = __last - __first; + std::__pop_heap<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp, __len); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::pop_heap(std::move(__first), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_POP_HEAP_H diff --git a/lib/libcxx/include/__algorithm/prev_permutation.h b/lib/libcxx/include/__algorithm/prev_permutation.h new file mode 100644 index 0000000..187f1e3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/prev_permutation.h @@ -0,0 +1,78 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PREV_PERMUTATION_H +#define _LIBCPP___ALGORITHM_PREV_PERMUTATION_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/reverse.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +pair<_BidirectionalIterator, bool> +__prev_permutation(_BidirectionalIterator __first, _Sentinel __last, _Compare&& __comp) +{ + using _Result = pair<_BidirectionalIterator, bool>; + + _BidirectionalIterator __last_iter = _IterOps<_AlgPolicy>::next(__first, __last); + _BidirectionalIterator __i = __last_iter; + if (__first == __last || __first == --__i) + return _Result(std::move(__last_iter), false); + + while (true) + { + _BidirectionalIterator __ip1 = __i; + if (__comp(*__ip1, *--__i)) + { + _BidirectionalIterator __j = __last_iter; + while (!__comp(*--__j, *__i)) + ; + _IterOps<_AlgPolicy>::iter_swap(__i, __j); + std::__reverse<_AlgPolicy>(__ip1, __last_iter); + return _Result(std::move(__last_iter), true); + } + if (__i == __first) + { + std::__reverse<_AlgPolicy>(__first, __last_iter); + return _Result(std::move(__last_iter), false); + } + } +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp) +{ + return std::__prev_permutation<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), static_cast<__comp_ref_type<_Compare> >(__comp)).second; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last) +{ + return _VSTD::prev_permutation(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_PREV_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/pstl_any_all_none_of.h b/lib/libcxx/include/__algorithm/pstl_any_all_none_of.h new file mode 100644 index 0000000..0e50e0e --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_any_all_none_of.h @@ -0,0 +1,100 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_ANY_ALL_NONE_OF_H +#define _LIBCPP___ALGORITHM_PSTL_ANY_ALL_NONE_OF_H + +#include <__algorithm/pstl_find.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_any_of(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI bool +any_of(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_any_of), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Predicate __g_pred) { + return std::find_if(__policy, __g_first, __g_last, __g_pred) != __g_last; + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +template +void __pstl_all_of(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI bool +all_of(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_all_of), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Pred __g_pred) { + return !std::any_of(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __value) { + return !__g_pred(__value); + }); + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +template +void __pstl_none_of(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI bool +none_of(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_none_of), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Pred __g_pred) { + return !std::any_of(__policy, __g_first, __g_last, __g_pred); + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_ANY_ALL_NONE_OF_H diff --git a/lib/libcxx/include/__algorithm/pstl_backend.h b/lib/libcxx/include/__algorithm/pstl_backend.h new file mode 100644 index 0000000..93372f0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backend.h @@ -0,0 +1,198 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKEND_H +#define _LIBCPP___ALGORITHM_PSTL_BACKEND_H + +#include <__algorithm/pstl_backends/cpu_backend.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +/* +TODO: Documentation of how backends work + +A PSTL parallel backend is a tag type to which the following functions are associated, at minimum: + + template + void __pstl_for_each(_Backend, _ExecutionPolicy&&, _Iterator __first, _Iterator __last, _Func __f); + + template + _Iterator __pstl_find_if(_Backend, _Iterator __first, _Iterator __last, _Predicate __pred); + + template + void __pstl_stable_sort(_Backend, _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp); + + template + _OutIterator __pstl_transform(_InIterator __first, _InIterator __last, _OutIterator __result, _UnaryOperation __op); + + template + _OutIterator __pstl_transform(_InIterator1 __first1, + _InIterator1 __last1, + _InIterator2 __first2, + _OutIterator __result, + _BinaryOperation __op); + + template + _Tp __pstl_transform_reduce(_Backend, + _Iterator1 __first1, + _Iterator1 __last1, + _Iterator2 __first2, + _Iterator2 __last2, + _Tp __init, + _BinaryOperation1 __reduce, + _BinaryOperation2 __transform); + + template + _Tp __pstl_transform_reduce(_Backend, + _Iterator __first, + _Iterator __last, + _Tp __init, + _BinaryOperation __reduce, + _UnaryOperation __transform); + +// TODO: Complete this list + +The following functions are optional but can be provided. If provided, they are used by the corresponding +algorithms, otherwise they are implemented in terms of other algorithms. If none of the optional algorithms are +implemented, all the algorithms will eventually forward to the basis algorithms listed above: + + template + void __pstl_for_each_n(_Backend, _Iterator __first, _Size __n, _Func __f); + + template + bool __pstl_any_of(_Backend, _Iterator __first, _iterator __last, _Predicate __pred); + + template + bool __pstl_all_of(_Backend, _Iterator __first, _iterator __last, _Predicate __pred); + + template + bool __pstl_none_of(_Backend, _Iterator __first, _iterator __last, _Predicate __pred); + + template + _Iterator __pstl_find(_Backend, _Iterator __first, _Iterator __last, const _Tp& __value); + + template + _Iterator __pstl_find_if_not(_Backend, _Iterator __first, _Iterator __last, _Predicate __pred); + + template + void __pstl_fill(_Backend, _Iterator __first, _Iterator __last, const _Tp& __value); + + template + void __pstl_fill_n(_Backend, _Iterator __first, _SizeT __n, const _Tp& __value); + + template + void __pstl_generate(_Backend, _Iterator __first, _Iterator __last, _Generator __gen); + + template + void __pstl_is_partitioned(_Backend, _Iterator __first, _Iterator __last, _Predicate __pred); + + template + void __pstl_generator_n(_Backend, _Iterator __first, _Size __n, _Generator __gen); + + template + _OutIterator __pstl_merge(_Backend, + _Iterator1 __first1, + _Iterator1 __last1, + _Iterator2 __first2, + _Iterator2 __last2, + _OutIterator __result, + _Comp __comp); + + template + _Tp __pstl_reduce(_Backend, _Iterator __first, _Iterator __last, _Tp __init, _BinaryOperation __op); + + temlate + __iter_value_type<_Iterator> __pstl_reduce(_Backend, _Iterator __first, _Iterator __last); + + template + __iter_diff_t<_Iterator> __pstl_count(_Backend, _Iterator __first, _Iterator __last, const _Tp& __value); + + template + __iter_diff_t<_Iterator> __pstl_count_if(_Backend, _Iterator __first, _Iterator __last, _Predicate __pred); + + template + void __pstl_replace(_Backend, _Iterator __first, _Iterator __last, const _Tp& __old_value, const _Tp& __new_value); + + template + void __pstl_replace_if(_Backend, _Iterator __first, _Iterator __last, _Pred __pred, const _Tp& __new_value); + + template + void __pstl_replace_copy(_Backend, + _Iterator __first, + _Iterator __last, + _OutIterator __result, + const _Tp& __old_value, + const _Tp& __new_value); + + template + void __pstl_replace_copy_if(_Backend, + _Iterator __first, + _Iterator __last, + _OutIterator __result, + _Pred __pred, + const _Tp& __new_value); + + template + void __pstl_sort(_Backend, _Iterator __first, _Iterator __last, _Comp __comp); + +// TODO: Complete this list + +*/ + +template +struct __select_backend; + +template <> +struct __select_backend { + using type = __cpu_backend_tag; +}; + +# if _LIBCPP_STD_VER >= 20 +template <> +struct __select_backend { + using type = __cpu_backend_tag; +}; +# endif + +# if defined(_LIBCPP_PSTL_CPU_BACKEND_SERIAL) || defined(_LIBCPP_PSTL_CPU_BACKEND_THREAD) || \ + defined(_LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH) +template <> +struct __select_backend { + using type = __cpu_backend_tag; +}; + +template <> +struct __select_backend { + using type = __cpu_backend_tag; +}; + +# else + +// ...New vendors can add parallel backends here... + +# error "Invalid choice of a PSTL parallel backend" +# endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKEND_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backend.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backend.h new file mode 100644 index 0000000..e54f331 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backend.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_H + +#include <__config> + +/* + + // _Functor takes a subrange for [__first, __last) that should be executed in serial + template + void __parallel_for(_RandomAccessIterator __first, _RandomAccessIterator __last, _Functor __func); + + template + _Tp __parallel_transform_reduce(_Iterator __first, _Iterator __last, _UnaryOp, _Tp __init, _BinaryOp, _Reduction); + + // Cancel the execution of other jobs - they aren't needed anymore + void __cancel_execution(); + + template + void __parallel_merge( + _RandomAccessIterator1 __first1, + _RandomAccessIterator1 __last1, + _RandomAccessIterator2 __first2, + _RandomAccessIterator2 __last2, + _RandomAccessIterator3 __outit, + _Compare __comp, + _LeafMerge __leaf_merge); + + template + void __parallel_stable_sort(_RandomAccessIterator __first, + _RandomAccessIterator __last, + _Comp __comp, + _LeafSort __leaf_sort); + + TODO: Document the parallel backend +*/ + +#include <__algorithm/pstl_backends/cpu_backends/any_of.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__algorithm/pstl_backends/cpu_backends/fill.h> +#include <__algorithm/pstl_backends/cpu_backends/find_if.h> +#include <__algorithm/pstl_backends/cpu_backends/for_each.h> +#include <__algorithm/pstl_backends/cpu_backends/merge.h> +#include <__algorithm/pstl_backends/cpu_backends/stable_sort.h> +#include <__algorithm/pstl_backends/cpu_backends/transform.h> +#include <__algorithm/pstl_backends/cpu_backends/transform_reduce.h> + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h new file mode 100644 index 0000000..8fe2679 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h @@ -0,0 +1,90 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H + +#include <__algorithm/any_of.h> +#include <__algorithm/find_if.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__atomic/atomic.h> +#include <__atomic/memory_order.h> +#include <__config> +#include <__functional/operations.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_execution_policy.h> +#include <__utility/pair.h> +#include <__utility/terminate_on_exception.h> +#include + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI bool __parallel_or(_Index __first, _Index __last, _Brick __f) { + std::atomic __found(false); + __par_backend::__parallel_for(__first, __last, [__f, &__found](_Index __i, _Index __j) { + if (!__found.load(std::memory_order_relaxed) && __f(__i, __j)) { + __found.store(true, std::memory_order_relaxed); + __par_backend::__cancel_execution(); + } + }); + return __found; +} + +// TODO: check whether __simd_first() can be used here +template +_LIBCPP_HIDE_FROM_ABI bool __simd_or(_Index __first, _DifferenceType __n, _Pred __pred) noexcept { + _DifferenceType __block_size = 4 < __n ? 4 : __n; + const _Index __last = __first + __n; + while (__last != __first) { + int32_t __flag = 1; + _PSTL_PRAGMA_SIMD_REDUCTION(& : __flag) + for (_DifferenceType __i = 0; __i < __block_size; ++__i) + if (__pred(*(__first + __i))) + __flag = 0; + if (!__flag) + return true; + + __first += __block_size; + if (__last - __first >= __block_size << 1) { + // Double the block _Size. Any unnecessary iterations can be amortized against work done so far. + __block_size <<= 1; + } else { + __block_size = __last - __first; + } + } + return false; +} + +template +_LIBCPP_HIDE_FROM_ABI bool +__pstl_any_of(__cpu_backend_tag, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + return std::__terminate_on_exception([&] { + return std::__parallel_or( + __first, __last, [&__pred](_ForwardIterator __brick_first, _ForwardIterator __brick_last) { + return std::__pstl_any_of<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, __brick_first, __brick_last, __pred); + }); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + return std::__simd_or(__first, __last - __first, __pred); + } else { + return std::any_of(__first, __last, __pred); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h new file mode 100644 index 0000000..ea2210a --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h @@ -0,0 +1,41 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H + +#include <__config> +#include + +#if defined(_LIBCPP_PSTL_CPU_BACKEND_SERIAL) +# include <__algorithm/pstl_backends/cpu_backends/serial.h> +#elif defined(_LIBCPP_PSTL_CPU_BACKEND_THREAD) +# include <__algorithm/pstl_backends/cpu_backends/thread.h> +#elif defined(_LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH) +# include <__algorithm/pstl_backends/cpu_backends/libdispatch.h> +#else +# error "Invalid CPU backend choice" +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +struct __cpu_backend_tag {}; + +inline constexpr size_t __lane_size = 64; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h new file mode 100644 index 0000000..5e5e0a2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H + +#include <__algorithm/fill.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_execution_policy.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _Index __simd_fill_n(_Index __first, _DifferenceType __n, const _Tp& __value) noexcept { + _PSTL_USE_NONTEMPORAL_STORES_IF_ALLOWED + _PSTL_PRAGMA_SIMD + for (_DifferenceType __i = 0; __i < __n; ++__i) + __first[__i] = __value; + return __first + __n; +} + +template +_LIBCPP_HIDE_FROM_ABI void +__pstl_fill(__cpu_backend_tag, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + std::__terminate_on_exception([&] { + __par_backend::__parallel_for( + __first, __last, [&__value](_ForwardIterator __brick_first, _ForwardIterator __brick_last) { + std::__pstl_fill<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, __brick_first, __brick_last, __value); + }); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + std::__simd_fill_n(__first, __last - __first, __value); + } else { + std::fill(__first, __last, __value); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h new file mode 100644 index 0000000..3fa4954 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h @@ -0,0 +1,123 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H + +#include <__algorithm/find_if.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__atomic/atomic.h> +#include <__config> +#include <__functional/operations.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_execution_policy.h> +#include <__utility/pair.h> +#include <__utility/terminate_on_exception.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _Index +__parallel_find(_Index __first, _Index __last, _Brick __f, _Compare __comp, bool __b_first) { + typedef typename std::iterator_traits<_Index>::difference_type _DifferenceType; + const _DifferenceType __n = __last - __first; + _DifferenceType __initial_dist = __b_first ? __n : -1; + std::atomic<_DifferenceType> __extremum(__initial_dist); + // TODO: find out what is better here: parallel_for or parallel_reduce + __par_backend::__parallel_for(__first, __last, [__comp, __f, __first, &__extremum](_Index __i, _Index __j) { + // See "Reducing Contention Through Priority Updates", PPoPP '13, for discussion of + // why using a shared variable scales fairly well in this situation. + if (__comp(__i - __first, __extremum)) { + _Index __res = __f(__i, __j); + // If not '__last' returned then we found what we want so put this to extremum + if (__res != __j) { + const _DifferenceType __k = __res - __first; + for (_DifferenceType __old = __extremum; __comp(__k, __old); __old = __extremum) { + __extremum.compare_exchange_weak(__old, __k); + } + } + } + }); + return __extremum != __initial_dist ? __first + __extremum : __last; +} + +template +_LIBCPP_HIDE_FROM_ABI _Index +__simd_first(_Index __first, _DifferenceType __begin, _DifferenceType __end, _Compare __comp) noexcept { + // Experiments show good block sizes like this + const _DifferenceType __block_size = 8; + alignas(__lane_size) _DifferenceType __lane[__block_size] = {0}; + while (__end - __begin >= __block_size) { + _DifferenceType __found = 0; + _PSTL_PRAGMA_SIMD_REDUCTION(| : __found) for (_DifferenceType __i = __begin; __i < __begin + __block_size; ++__i) { + const _DifferenceType __t = __comp(__first, __i); + __lane[__i - __begin] = __t; + __found |= __t; + } + if (__found) { + _DifferenceType __i; + // This will vectorize + for (__i = 0; __i < __block_size; ++__i) { + if (__lane[__i]) { + break; + } + } + return __first + __begin + __i; + } + __begin += __block_size; + } + + // Keep remainder scalar + while (__begin != __end) { + if (__comp(__first, __begin)) { + return __first + __begin; + } + ++__begin; + } + return __first + __end; +} + +template +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +__pstl_find_if(__cpu_backend_tag, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + return std::__terminate_on_exception([&] { + return std::__parallel_find( + __first, + __last, + [&__pred](_ForwardIterator __brick_first, _ForwardIterator __brick_last) { + return std::__pstl_find_if<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, __brick_first, __brick_last, __pred); + }, + less<>{}, + true); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + using __diff_t = __iter_diff_t<_ForwardIterator>; + return std::__simd_first(__first, __diff_t(0), __last - __first, [&__pred](_ForwardIterator __iter, __diff_t __i) { + return __pred(__iter[__i]); + }); + } else { + return std::find_if(__first, __last, __pred); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h new file mode 100644 index 0000000..36d0ac2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H + +#include <__algorithm/for_each.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_execution_policy.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _Iterator __simd_walk_1(_Iterator __first, _DifferenceType __n, _Function __f) noexcept { + _PSTL_PRAGMA_SIMD + for (_DifferenceType __i = 0; __i < __n; ++__i) + __f(__first[__i]); + + return __first + __n; +} + +template +_LIBCPP_HIDE_FROM_ABI void +__pstl_for_each(__cpu_backend_tag, _ForwardIterator __first, _ForwardIterator __last, _Functor __func) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + std::__terminate_on_exception([&] { + std::__par_backend::__parallel_for( + __first, __last, [__func](_ForwardIterator __brick_first, _ForwardIterator __brick_last) { + std::__pstl_for_each<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, __brick_first, __brick_last, __func); + }); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + std::__simd_walk_1(__first, __last - __first, __func); + } else { + std::for_each(__first, __last, __func); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/libdispatch.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/libdispatch.h new file mode 100644 index 0000000..bab6a36 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/libdispatch.h @@ -0,0 +1,241 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_LIBDISPATCH_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_LIBDISPATCH_H + +#include <__algorithm/lower_bound.h> +#include <__algorithm/max.h> +#include <__algorithm/upper_bound.h> +#include <__atomic/atomic.h> +#include <__config> +#include <__exception/terminate.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/move_iterator.h> +#include <__memory/allocator.h> +#include <__memory/construct_at.h> +#include <__memory/unique_ptr.h> +#include <__numeric/reduce.h> +#include <__utility/exception_guard.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include <__utility/terminate_on_exception.h> +#include +#include + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __par_backend { +inline namespace __libdispatch { + +// ::dispatch_apply is marked as __attribute__((nothrow)) because it doesn't let exceptions propagate, and neither do +// we. +// TODO: Do we want to add [[_Clang::__callback__(__func, __context, __)]]? +_LIBCPP_EXPORTED_FROM_ABI void +__dispatch_apply(size_t __chunk_count, void* __context, void (*__func)(void* __context, size_t __chunk)) noexcept; + +template +_LIBCPP_HIDE_FROM_ABI void __dispatch_apply(size_t __chunk_count, _Func __func) noexcept { + __libdispatch::__dispatch_apply(__chunk_count, &__func, [](void* __context, size_t __chunk) { + (*static_cast<_Func*>(__context))(__chunk); + }); +} + +struct __chunk_partitions { + ptrdiff_t __chunk_count_; // includes the first chunk + ptrdiff_t __chunk_size_; + ptrdiff_t __first_chunk_size_; +}; + +[[__gnu__::__const__]] _LIBCPP_EXPORTED_FROM_ABI __chunk_partitions __partition_chunks(ptrdiff_t __size); + +template +_LIBCPP_HIDE_FROM_ABI void +__parallel_for(_RandomAccessIterator __first, _RandomAccessIterator __last, _Functor __func) { + auto __partitions = __libdispatch::__partition_chunks(__last - __first); + + // Perform the chunked execution. + __libdispatch::__dispatch_apply(__partitions.__chunk_count_, [&](size_t __chunk) { + auto __this_chunk_size = __chunk == 0 ? __partitions.__first_chunk_size_ : __partitions.__chunk_size_; + auto __index = + __chunk == 0 + ? 0 + : (__chunk * __partitions.__chunk_size_) + (__partitions.__first_chunk_size_ - __partitions.__chunk_size_); + __func(__first + __index, __first + __index + __this_chunk_size); + }); +} + +template +struct __merge_range { + __merge_range(_RandomAccessIterator1 __mid1, _RandomAccessIterator2 __mid2, _RandomAccessIteratorOut __result) + : __mid1_(__mid1), __mid2_(__mid2), __result_(__result) {} + + _RandomAccessIterator1 __mid1_; + _RandomAccessIterator2 __mid2_; + _RandomAccessIteratorOut __result_; +}; + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_merge( + _RandomAccessIterator1 __first1, + _RandomAccessIterator1 __last1, + _RandomAccessIterator2 __first2, + _RandomAccessIterator2 __last2, + _RandomAccessIterator3 __result, + _Compare __comp, + _LeafMerge __leaf_merge) { + __chunk_partitions __partitions = + __libdispatch::__partition_chunks(std::max(__last1 - __first1, __last2 - __first2)); + + if (__partitions.__chunk_count_ == 0) + return; + + if (__partitions.__chunk_count_ == 1) { + __leaf_merge(__first1, __last1, __first2, __last2, __result, __comp); + return; + } + + using __merge_range_t = __merge_range<_RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator3>; + auto const __n_ranges = __partitions.__chunk_count_ + 1; + + // TODO: use __uninitialized_buffer + auto __destroy = [=](__merge_range_t* __ptr) { + std::destroy_n(__ptr, __n_ranges); + std::allocator<__merge_range_t>().deallocate(__ptr, __n_ranges); + }; + unique_ptr<__merge_range_t[], decltype(__destroy)> __ranges( + std::allocator<__merge_range_t>().allocate(__n_ranges), __destroy); + + // TODO: Improve the case where the smaller range is merged into just a few (or even one) chunks of the larger case + std::__terminate_on_exception([&] { + __merge_range_t* __r = __ranges.get(); + std::__construct_at(__r++, __first1, __first2, __result); + + bool __iterate_first_range = __last1 - __first1 > __last2 - __first2; + + auto __compute_chunk = [&](size_t __chunk_size) -> __merge_range_t { + auto [__mid1, __mid2] = [&] { + if (__iterate_first_range) { + auto __m1 = __first1 + __chunk_size; + auto __m2 = std::lower_bound(__first2, __last2, __m1[-1], __comp); + return std::make_pair(__m1, __m2); + } else { + auto __m2 = __first2 + __chunk_size; + auto __m1 = std::lower_bound(__first1, __last1, __m2[-1], __comp); + return std::make_pair(__m1, __m2); + } + }(); + + __result += (__mid1 - __first1) + (__mid2 - __first2); + __first1 = __mid1; + __first2 = __mid2; + return {std::move(__mid1), std::move(__mid2), __result}; + }; + + // handle first chunk + std::__construct_at(__r++, __compute_chunk(__partitions.__first_chunk_size_)); + + // handle 2 -> N - 1 chunks + for (ptrdiff_t __i = 0; __i != __partitions.__chunk_count_ - 2; ++__i) + std::__construct_at(__r++, __compute_chunk(__partitions.__chunk_size_)); + + // handle last chunk + std::__construct_at(__r, __last1, __last2, __result); + + __libdispatch::__dispatch_apply(__partitions.__chunk_count_, [&](size_t __index) { + auto __first_iters = __ranges[__index]; + auto __last_iters = __ranges[__index + 1]; + __leaf_merge( + __first_iters.__mid1_, + __last_iters.__mid1_, + __first_iters.__mid2_, + __last_iters.__mid2_, + __first_iters.__result_, + __comp); + }); + }); +} + +template +_LIBCPP_HIDE_FROM_ABI _Value __parallel_transform_reduce( + _RandomAccessIterator __first, + _RandomAccessIterator __last, + _Transform __transform, + _Value __init, + _Combiner __combiner, + _Reduction __reduction) { + if (__first == __last) + return __init; + + auto __partitions = __libdispatch::__partition_chunks(__last - __first); + + auto __destroy = [__count = __partitions.__chunk_count_](_Value* __ptr) { + std::destroy_n(__ptr, __count); + std::allocator<_Value>().deallocate(__ptr, __count); + }; + + // TODO: use __uninitialized_buffer + // TODO: allocate one element per worker instead of one element per chunk + unique_ptr<_Value[], decltype(__destroy)> __values( + std::allocator<_Value>().allocate(__partitions.__chunk_count_), __destroy); + + // __dispatch_apply is noexcept + __libdispatch::__dispatch_apply(__partitions.__chunk_count_, [&](size_t __chunk) { + auto __this_chunk_size = __chunk == 0 ? __partitions.__first_chunk_size_ : __partitions.__chunk_size_; + auto __index = + __chunk == 0 + ? 0 + : (__chunk * __partitions.__chunk_size_) + (__partitions.__first_chunk_size_ - __partitions.__chunk_size_); + if (__this_chunk_size != 1) { + std::__construct_at( + __values.get() + __chunk, + __reduction(__first + __index + 2, + __first + __index + __this_chunk_size, + __combiner(__transform(__first + __index), __transform(__first + __index + 1)))); + } else { + std::__construct_at(__values.get() + __chunk, __transform(__first + __index)); + } + }); + + return std::__terminate_on_exception([&] { + return std::reduce( + std::make_move_iterator(__values.get()), + std::make_move_iterator(__values.get() + __partitions.__chunk_count_), + std::move(__init), + __combiner); + }); +} + +// TODO: parallelize this +template +_LIBCPP_HIDE_FROM_ABI void __parallel_stable_sort( + _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp, _LeafSort __leaf_sort) { + __leaf_sort(__first, __last, __comp); +} + +_LIBCPP_HIDE_FROM_ABI inline void __cancel_execution() {} + +} // namespace __libdispatch +} // namespace __par_backend + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_LIBDISPATCH_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h new file mode 100644 index 0000000..d5be1e3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H + +#include <__algorithm/merge.h> +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_execution_policy.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator __pstl_merge( + __cpu_backend_tag, + _ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _ForwardIterator2 __last2, + _ForwardOutIterator __result, + _Comp __comp) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator1>::value && + __has_random_access_iterator_category<_ForwardIterator2>::value && + __has_random_access_iterator_category<_ForwardOutIterator>::value) { + return std::__terminate_on_exception([&] { + __par_backend::__parallel_merge( + __first1, + __last1, + __first2, + __last2, + __result, + __comp, + [](_ForwardIterator1 __g_first1, + _ForwardIterator1 __g_last1, + _ForwardIterator2 __g_first2, + _ForwardIterator2 __g_last2, + _ForwardOutIterator __g_result, + _Comp __g_comp) { + return std::__pstl_merge<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, + std::move(__g_first1), + std::move(__g_last1), + std::move(__g_first2), + std::move(__g_last2), + std::move(__g_result), + std::move(__g_comp)); + }); + return __result + (__last1 - __first1) + (__last2 - __first2); + }); + } else { + return std::merge(__first1, __last1, __first2, __last2, __result, __comp); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h new file mode 100644 index 0000000..f151c3b --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h @@ -0,0 +1,72 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_SERIAL_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_SERIAL_H + +#include <__config> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __par_backend { +inline namespace __serial_cpu_backend { + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_for(_RandomAccessIterator __first, _RandomAccessIterator __last, _Fp __f) { + __f(__first, __last); +} + +template +_LIBCPP_HIDE_FROM_ABI _Tp +__parallel_transform_reduce(_Index __first, _Index __last, _UnaryOp, _Tp __init, _BinaryOp, _Reduce __reduce) { + return __reduce(std::move(__first), std::move(__last), std::move(__init)); +} + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_stable_sort( + _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp, _LeafSort __leaf_sort) { + __leaf_sort(__first, __last, __comp); +} + +_LIBCPP_HIDE_FROM_ABI inline void __cancel_execution() {} + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_merge( + _RandomAccessIterator1 __first1, + _RandomAccessIterator1 __last1, + _RandomAccessIterator2 __first2, + _RandomAccessIterator2 __last2, + _RandomAccessIterator3 __outit, + _Compare __comp, + _LeafMerge __leaf_merge) { + __leaf_merge(__first1, __last1, __first2, __last2, __outit, __comp); +} + +// TODO: Complete this list + +} // namespace __serial_cpu_backend +} // namespace __par_backend + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_SERIAL_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h new file mode 100644 index 0000000..0a70144 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h @@ -0,0 +1,45 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H + +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__algorithm/stable_sort.h> +#include <__config> +#include <__type_traits/is_execution_policy.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI void +__pstl_stable_sort(__cpu_backend_tag, _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy>) { + std::__terminate_on_exception([&] { + __par_backend::__parallel_stable_sort( + __first, __last, __comp, [](_RandomAccessIterator __g_first, _RandomAccessIterator __g_last, _Comp __g_comp) { + std::stable_sort(__g_first, __g_last, __g_comp); + }); + }); + } else { + std::stable_sort(__first, __last, __comp); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h new file mode 100644 index 0000000..30eb0ae --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h @@ -0,0 +1,78 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_THREAD_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_THREAD_H + +#include <__assert> +#include <__config> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +// This backend implementation is for testing purposes only and not meant for production use. This will be replaced +// by a proper implementation once the PSTL implementation is somewhat stable. + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __par_backend { +inline namespace __thread_cpu_backend { + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_for(_RandomAccessIterator __first, _RandomAccessIterator __last, _Fp __f) { + __f(__first, __last); +} + +template +_LIBCPP_HIDE_FROM_ABI _Tp +__parallel_transform_reduce(_Index __first, _Index __last, _UnaryOp, _Tp __init, _BinaryOp, _Reduce __reduce) { + return __reduce(std::move(__first), std::move(__last), std::move(__init)); +} + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_stable_sort( + _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp, _LeafSort __leaf_sort) { + __leaf_sort(__first, __last, __comp); +} + +_LIBCPP_HIDE_FROM_ABI inline void __cancel_execution() {} + +template +_LIBCPP_HIDE_FROM_ABI void __parallel_merge( + _RandomAccessIterator1 __first1, + _RandomAccessIterator1 __last1, + _RandomAccessIterator2 __first2, + _RandomAccessIterator2 __last2, + _RandomAccessIterator3 __outit, + _Compare __comp, + _LeafMerge __leaf_merge) { + __leaf_merge(__first1, __last1, __first2, __last2, __outit, __comp); +} + +} // namespace __thread_cpu_backend +} // namespace __par_backend + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && && _LIBCPP_STD_VER >= 17 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_THREAD_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h new file mode 100644 index 0000000..ef25ff0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h @@ -0,0 +1,132 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H + +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__algorithm/transform.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _Iterator2 +__simd_walk_2(_Iterator1 __first1, _DifferenceType __n, _Iterator2 __first2, _Function __f) noexcept { + _PSTL_PRAGMA_SIMD + for (_DifferenceType __i = 0; __i < __n; ++__i) + __f(__first1[__i], __first2[__i]); + return __first2 + __n; +} + +template +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator __pstl_transform( + __cpu_backend_tag, + _ForwardIterator __first, + _ForwardIterator __last, + _ForwardOutIterator __result, + _UnaryOperation __op) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value && + __has_random_access_iterator_category<_ForwardOutIterator>::value) { + std::__terminate_on_exception([&] { + std::__par_backend::__parallel_for( + __first, __last, [__op, __first, __result](_ForwardIterator __brick_first, _ForwardIterator __brick_last) { + return std::__pstl_transform<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, __brick_first, __brick_last, __result + (__brick_first - __first), __op); + }); + }); + return __result + (__last - __first); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value && + __has_random_access_iterator_category<_ForwardOutIterator>::value) { + return std::__simd_walk_2( + __first, + __last - __first, + __result, + [&](__iter_reference<_ForwardIterator> __in_value, __iter_reference<_ForwardOutIterator> __out_value) { + __out_value = __op(__in_value); + }); + } else { + return std::transform(__first, __last, __result, __op); + } +} + +template +_LIBCPP_HIDE_FROM_ABI _Iterator3 __simd_walk_3( + _Iterator1 __first1, _DifferenceType __n, _Iterator2 __first2, _Iterator3 __first3, _Function __f) noexcept { + _PSTL_PRAGMA_SIMD + for (_DifferenceType __i = 0; __i < __n; ++__i) + __f(__first1[__i], __first2[__i], __first3[__i]); + return __first3 + __n; +} +template >, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator __pstl_transform( + __cpu_backend_tag, + _ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _ForwardOutIterator __result, + _BinaryOperation __op) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator1>::value && + __has_random_access_iterator_category<_ForwardIterator2>::value && + __has_random_access_iterator_category<_ForwardOutIterator>::value) { + std::__terminate_on_exception([&] { + std::__par_backend::__parallel_for( + __first1, + __last1, + [__op, __first1, __first2, __result](_ForwardIterator1 __brick_first, _ForwardIterator1 __brick_last) { + return std::__pstl_transform<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, + __brick_first, + __brick_last, + __first2 + (__brick_first - __first1), + __result + (__brick_first - __first1), + __op); + }); + }); + return __result + (__last1 - __first1); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator1>::value && + __has_random_access_iterator_category<_ForwardIterator2>::value && + __has_random_access_iterator_category<_ForwardOutIterator>::value) { + return std::__simd_walk_3( + __first1, + __last1 - __first1, + __first2, + __result, + [&](__iter_reference<_ForwardIterator1> __in1, + __iter_reference<_ForwardIterator2> __in2, + __iter_reference<_ForwardOutIterator> __out_value) { __out_value = __op(__in1, __in2); }); + } else { + return std::transform(__first1, __last1, __first2, __result, __op); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H diff --git a/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h new file mode 100644 index 0000000..c51c312 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h @@ -0,0 +1,194 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H +#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H + +#include <__algorithm/pstl_backends/cpu_backends/backend.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__numeric/transform_reduce.h> +#include <__type_traits/is_arithmetic.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/operation_traits.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template < + typename _DifferenceType, + typename _Tp, + typename _BinaryOperation, + typename _UnaryOperation, + __enable_if_t<__is_trivial_plus_operation<_BinaryOperation, _Tp, _Tp>::value && is_arithmetic_v<_Tp>, int> = 0> +_LIBCPP_HIDE_FROM_ABI _Tp +__simd_transform_reduce(_DifferenceType __n, _Tp __init, _BinaryOperation, _UnaryOperation __f) noexcept { + _PSTL_PRAGMA_SIMD_REDUCTION(+ : __init) + for (_DifferenceType __i = 0; __i < __n; ++__i) + __init += __f(__i); + return __init; +} + +template < + typename _Size, + typename _Tp, + typename _BinaryOperation, + typename _UnaryOperation, + __enable_if_t::value && is_arithmetic_v<_Tp>), int> = 0> +_LIBCPP_HIDE_FROM_ABI _Tp +__simd_transform_reduce(_Size __n, _Tp __init, _BinaryOperation __binary_op, _UnaryOperation __f) noexcept { + const _Size __block_size = __lane_size / sizeof(_Tp); + if (__n > 2 * __block_size && __block_size > 1) { + alignas(__lane_size) char __lane_buffer[__lane_size]; + _Tp* __lane = reinterpret_cast<_Tp*>(__lane_buffer); + + // initializer + _PSTL_PRAGMA_SIMD + for (_Size __i = 0; __i < __block_size; ++__i) { + ::new (__lane + __i) _Tp(__binary_op(__f(__i), __f(__block_size + __i))); + } + // main loop + _Size __i = 2 * __block_size; + const _Size __last_iteration = __block_size * (__n / __block_size); + for (; __i < __last_iteration; __i += __block_size) { + _PSTL_PRAGMA_SIMD + for (_Size __j = 0; __j < __block_size; ++__j) { + __lane[__j] = __binary_op(std::move(__lane[__j]), __f(__i + __j)); + } + } + // remainder + _PSTL_PRAGMA_SIMD + for (_Size __j = 0; __j < __n - __last_iteration; ++__j) { + __lane[__j] = __binary_op(std::move(__lane[__j]), __f(__last_iteration + __j)); + } + // combiner + for (_Size __j = 0; __j < __block_size; ++__j) { + __init = __binary_op(std::move(__init), std::move(__lane[__j])); + } + // destroyer + _PSTL_PRAGMA_SIMD + for (_Size __j = 0; __j < __block_size; ++__j) { + __lane[__j].~_Tp(); + } + } else { + for (_Size __i = 0; __i < __n; ++__i) { + __init = __binary_op(std::move(__init), __f(__i)); + } + } + return __init; +} + +template +_LIBCPP_HIDE_FROM_ABI _Tp __pstl_transform_reduce( + __cpu_backend_tag, + _ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _Tp __init, + _BinaryOperation1 __reduce, + _BinaryOperation2 __transform) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator1>::value && + __has_random_access_iterator_category<_ForwardIterator2>::value) { + return std::__terminate_on_exception([&] { + return __par_backend::__parallel_transform_reduce( + __first1, + std::move(__last1), + [__first1, __first2, __transform](_ForwardIterator1 __iter) { + return __transform(*__iter, *(__first2 + (__iter - __first1))); + }, + std::move(__init), + std::move(__reduce), + [__first1, __first2, __reduce, __transform]( + _ForwardIterator1 __brick_first, _ForwardIterator1 __brick_last, _Tp __brick_init) { + return std::__pstl_transform_reduce<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, + __brick_first, + std::move(__brick_last), + __first2 + (__brick_first - __first1), + std::move(__brick_init), + std::move(__reduce), + std::move(__transform)); + }); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator1>::value && + __has_random_access_iterator_category<_ForwardIterator2>::value) { + return std::__simd_transform_reduce( + __last1 - __first1, std::move(__init), std::move(__reduce), [&](__iter_diff_t<_ForwardIterator1> __i) { + return __transform(__first1[__i], __first2[__i]); + }); + } else { + return std::transform_reduce( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__init), + std::move(__reduce), + std::move(__transform)); + } +} + +template +_LIBCPP_HIDE_FROM_ABI _Tp __pstl_transform_reduce( + __cpu_backend_tag, + _ForwardIterator __first, + _ForwardIterator __last, + _Tp __init, + _BinaryOperation __reduce, + _UnaryOperation __transform) { + if constexpr (__is_parallel_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + return std::__terminate_on_exception([&] { + return __par_backend::__parallel_transform_reduce( + std::move(__first), + std::move(__last), + [__transform](_ForwardIterator __iter) { return __transform(*__iter); }, + std::move(__init), + __reduce, + [__transform, __reduce](auto __brick_first, auto __brick_last, _Tp __brick_init) { + return std::__pstl_transform_reduce<__remove_parallel_policy_t<_ExecutionPolicy>>( + __cpu_backend_tag{}, + std::move(__brick_first), + std::move(__brick_last), + std::move(__brick_init), + std::move(__reduce), + std::move(__transform)); + }); + }); + } else if constexpr (__is_unsequenced_execution_policy_v<_ExecutionPolicy> && + __has_random_access_iterator_category<_ForwardIterator>::value) { + return std::__simd_transform_reduce( + __last - __first, + std::move(__init), + std::move(__reduce), + [=, &__transform](__iter_diff_t<_ForwardIterator> __i) { return __transform(__first[__i]); }); + } else { + return std::transform_reduce( + std::move(__first), std::move(__last), std::move(__init), std::move(__reduce), std::move(__transform)); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H diff --git a/lib/libcxx/include/__algorithm/pstl_copy.h b/lib/libcxx/include/__algorithm/pstl_copy.h new file mode 100644 index 0000000..83c712c --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_copy.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_COPY_H +#define _LIBCPP___ALGORITHM_PSTL_COPY_H + +#include <__algorithm/copy_n.h> +#include <__algorithm/pstl_transform.h> +#include <__config> +#include <__functional/identity.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +// TODO: Use the std::copy/move shenanigans to forward to std::memmove + +template >, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator +copy(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _ForwardOutIterator __result) { + return std::transform(__policy, __first, __last, __result, __identity()); +} + +template >, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator +copy_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __n, _ForwardOutIterator __result) { + if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) + return std::copy(__policy, __first, __first + __n, __result); + else + return std::copy_n(__first, __n, __result); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_COPY_H diff --git a/lib/libcxx/include/__algorithm/pstl_count.h b/lib/libcxx/include/__algorithm/pstl_count.h new file mode 100644 index 0000000..15acb85 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_count.h @@ -0,0 +1,89 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_COUNT_H +#define _LIBCPP___ALGORITHM_PSTL_COUNT_H + +#include <__algorithm/count.h> +#include <__algorithm/for_each.h> +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_for_each.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__atomic/atomic.h> +#include <__config> +#include <__functional/operations.h> +#include <__iterator/iterator_traits.h> +#include <__numeric/pstl_transform_reduce.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_count_if(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI __iter_diff_t<_ForwardIterator> +count_if(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + using __diff_t = __iter_diff_t<_ForwardIterator>; + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_count_if), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Predicate __g_pred) { + return std::transform_reduce( + __policy, + std::move(__g_first), + std::move(__g_last), + __diff_t(), + std::plus{}, + [&](__iter_reference<_ForwardIterator> __element) -> bool { return __g_pred(__element); }); + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +template +void __pstl_count(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI __iter_diff_t<_ForwardIterator> +count(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_count), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { + return std::count_if(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __v) { + return __v == __g_value; + }); + }, + std::move(__first), + std::move(__last), + __value); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_COUNT_H diff --git a/lib/libcxx/include/__algorithm/pstl_fill.h b/lib/libcxx/include/__algorithm/pstl_fill.h new file mode 100644 index 0000000..d64c828 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_fill.h @@ -0,0 +1,84 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_FILL_H +#define _LIBCPP___ALGORITHM_PSTL_FILL_H + +#include <__algorithm/fill_n.h> +#include <__algorithm/pstl_for_each.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_fill(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { + std::for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { + __element = __g_value; + }); + }, + std::move(__first), + std::move(__last), + __value); +} + +template +void __pstl_fill_n(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +fill_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _SizeT __n, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill_n), + [&](_ForwardIterator __g_first, _SizeT __g_n, const _Tp& __g_value) { + if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) + std::fill(__policy, __g_first, __g_first + __g_n, __g_value); + else + std::fill_n(__g_first, __g_n, __g_value); + }, + std::move(__first), + __n, + __value); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_FILL_H diff --git a/lib/libcxx/include/__algorithm/pstl_find.h b/lib/libcxx/include/__algorithm/pstl_find.h new file mode 100644 index 0000000..8e8adfe --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_find.h @@ -0,0 +1,95 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_FIND_H +#define _LIBCPP___ALGORITHM_PSTL_FIND_H + +#include <__algorithm/comp.h> +#include <__algorithm/find.h> +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +find_if(_ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + using _Backend = typename __select_backend<_RawPolicy>::type; + return std::__pstl_find_if<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__pred)); +} + +template +void __pstl_find_if_not(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +find_if_not(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find_if_not), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Predicate __g_pred) { + return std::find_if(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __value) { + return !__g_pred(__value); + }); + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +template +void __pstl_find(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +find(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { + return std::find_if(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { + return __element == __g_value; + }); + }, + std::move(__first), + std::move(__last), + __value); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_FIND_H diff --git a/lib/libcxx/include/__algorithm/pstl_for_each.h b/lib/libcxx/include/__algorithm/pstl_for_each.h new file mode 100644 index 0000000..09efc24 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_for_each.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_FOR_EACH_H +#define _LIBCPP___ALGORITHM_PSTL_FOR_EACH_H + +#include <__algorithm/for_each.h> +#include <__algorithm/for_each_n.h> +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__type_traits/void_t.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +for_each(_ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Function __func) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + using _Backend = typename __select_backend<_RawPolicy>::type; + std::__pstl_for_each<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__func)); +} + +template +void __pstl_for_each_n(); // declaration needed for the frontend dispatch below + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +for_each_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __size, _Function __func) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_for_each_n), + [&](_ForwardIterator __g_first, _Size __g_size, _Function __g_func) { + if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) { + std::for_each(__policy, std::move(__g_first), __g_first + __g_size, std::move(__g_func)); + } else { + std::for_each_n(std::move(__g_first), __g_size, std::move(__g_func)); + } + }, + __first, + __size, + std::move(__func)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_FOR_EACH_H diff --git a/lib/libcxx/include/__algorithm/pstl_frontend_dispatch.h b/lib/libcxx/include/__algorithm/pstl_frontend_dispatch.h new file mode 100644 index 0000000..dc49f3e --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_frontend_dispatch.h @@ -0,0 +1,45 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_FRONTEND_DISPATCH +#define _LIBCPP___ALGORITHM_PSTL_FRONTEND_DISPATCH + +#include <__config> +#include <__type_traits/is_callable.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +# define _LIBCPP_PSTL_CUSTOMIZATION_POINT(name) \ + [](auto&&... __args) -> decltype(std::name<_RawPolicy>(typename __select_backend<_RawPolicy>::type{}, \ + std::forward(__args)...)) { \ + return std::name<_RawPolicy>( \ + typename __select_backend<_RawPolicy>::type{}, std::forward(__args)...); \ + } + +template +_LIBCPP_HIDE_FROM_ABI decltype(auto) +__pstl_frontend_dispatch(_SpecializedImpl __specialized_impl, _GenericImpl __generic_impl, _Args&&... __args) { + if constexpr (__is_callable<_SpecializedImpl, _Args...>::value) { + return __specialized_impl(std::forward<_Args>(__args)...); + } else { + return __generic_impl(std::forward<_Args>(__args)...); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_FRONTEND_DISPATCH diff --git a/lib/libcxx/include/__algorithm/pstl_generate.h b/lib/libcxx/include/__algorithm/pstl_generate.h new file mode 100644 index 0000000..e1ba018 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_generate.h @@ -0,0 +1,82 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_GENERATE_H +#define _LIBCPP___ALGORITHM_PSTL_GENERATE_H + +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_for_each.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_generate(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +generate(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Generator __gen) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_generate), + [&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _Generator __g_gen) { + std::for_each( + __policy, std::move(__g_first), std::move(__g_last), [&](__iter_reference<_ForwardIterator> __element) { + __element = __g_gen(); + }); + }, + std::move(__first), + std::move(__last), + std::move(__gen)); +} + +template +void __pstl_generate_n(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +generate_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __n, _Generator __gen) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_generate_n), + [&__policy](_ForwardIterator __g_first, _Size __g_n, _Generator __g_gen) { + std::for_each_n(__policy, std::move(__g_first), __g_n, [&](__iter_reference<_ForwardIterator> __element) { + __element = __g_gen(); + }); + }, + std::move(__first), + __n, + std::move(__gen)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_GENERATE_H diff --git a/lib/libcxx/include/__algorithm/pstl_is_partitioned.h b/lib/libcxx/include/__algorithm/pstl_is_partitioned.h new file mode 100644 index 0000000..6f6e9b2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_is_partitioned.h @@ -0,0 +1,58 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_IS_PARITTIONED +#define _LIBCPP___ALGORITHM_PSTL_IS_PARITTIONED + +#include <__algorithm/pstl_any_all_none_of.h> +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_find.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__config> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_is_partitioned(); + +template , + enable_if_t, int> = 0> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI bool +is_partitioned(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_is_partitioned), + [&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _Predicate __g_pred) { + __g_first = std::find_if_not(__policy, __g_first, __g_last, __g_pred); + if (__g_first == __g_last) + return true; + ++__g_first; + return std::none_of(__policy, __g_first, __g_last, __g_pred); + }, + std::move(__first), + std::move(__last), + std::move(__pred)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_IS_PARITTIONED diff --git a/lib/libcxx/include/__algorithm/pstl_merge.h b/lib/libcxx/include/__algorithm/pstl_merge.h new file mode 100644 index 0000000..f10ac76 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_merge.h @@ -0,0 +1,58 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_MERGE_H +#define _LIBCPP___ALGORITHM_PSTL_MERGE_H + +#include <__algorithm/pstl_backend.h> +#include <__config> +#include <__functional/operations.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator +merge(_ExecutionPolicy&&, + _ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _ForwardIterator2 __last2, + _ForwardOutIterator __result, + _Comp __comp = {}) { + using _Backend = typename __select_backend<_RawPolicy>::type; + return std::__pstl_merge<_RawPolicy>( + _Backend{}, + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + std::move(__comp)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_MERGE_H diff --git a/lib/libcxx/include/__algorithm/pstl_replace.h b/lib/libcxx/include/__algorithm/pstl_replace.h new file mode 100644 index 0000000..04ffaab --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_replace.h @@ -0,0 +1,167 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_REPLACE_H +#define _LIBCPP___ALGORITHM_PSTL_REPLACE_H + +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_for_each.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__algorithm/pstl_transform.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_replace_if(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +replace_if(_ExecutionPolicy&& __policy, + _ForwardIterator __first, + _ForwardIterator __last, + _Pred __pred, + const _Tp& __new_value) { + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_if), + [&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _Pred __g_pred, const _Tp& __g_new_value) { + std::for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { + if (__g_pred(__element)) + __element = __g_new_value; + }); + }, + std::move(__first), + std::move(__last), + std::move(__pred), + __new_value); +} + +template +void __pstl_replace(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +replace(_ExecutionPolicy&& __policy, + _ForwardIterator __first, + _ForwardIterator __last, + const _Tp& __old_value, + const _Tp& __new_value) { + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace), + [&__policy]( + _ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_old_value, const _Tp& __g_new_value) { + std::replace_if( + __policy, + std::move(__g_first), + std::move(__g_last), + [&](__iter_reference<_ForwardIterator> __element) { return __element == __g_old_value; }, + __g_new_value); + }, + std::move(__first), + std::move(__last), + __old_value, + __new_value); +} + +template +void __pstl_replace_copy_if(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void replace_copy_if( + _ExecutionPolicy&& __policy, + _ForwardIterator __first, + _ForwardIterator __last, + _ForwardOutIterator __result, + _Pred __pred, + const _Tp& __new_value) { + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_copy_if), + [&__policy](_ForwardIterator __g_first, + _ForwardIterator __g_last, + _ForwardOutIterator __g_result, + _Pred __g_pred, + const _Tp& __g_new_value) { + std::transform(__policy, __g_first, __g_last, __g_result, [&](__iter_reference<_ForwardIterator> __element) { + return __g_pred(__element) ? __g_new_value : __element; + }); + }, + std::move(__first), + std::move(__last), + std::move(__result), + std::move(__pred), + __new_value); +} + +template +void __pstl_replace_copy(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void replace_copy( + _ExecutionPolicy&& __policy, + _ForwardIterator __first, + _ForwardIterator __last, + _ForwardOutIterator __result, + const _Tp& __old_value, + const _Tp& __new_value) { + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_copy), + [&__policy](_ForwardIterator __g_first, + _ForwardIterator __g_last, + _ForwardOutIterator __g_result, + const _Tp& __g_old_value, + const _Tp& __g_new_value) { + return std::replace_copy_if( + __policy, + std::move(__g_first), + std::move(__g_last), + std::move(__g_result), + [&](__iter_reference<_ForwardIterator> __element) { return __element == __g_old_value; }, + __g_new_value); + }, + std::move(__first), + std::move(__last), + std::move(__result), + __old_value, + __new_value); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_REPLACE_H diff --git a/lib/libcxx/include/__algorithm/pstl_sort.h b/lib/libcxx/include/__algorithm/pstl_sort.h new file mode 100644 index 0000000..75c77ed --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_sort.h @@ -0,0 +1,63 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_SORT_H +#define _LIBCPP___ALGORITHM_PSTL_SORT_H + +#include <__algorithm/pstl_backend.h> +#include <__algorithm/pstl_frontend_dispatch.h> +#include <__algorithm/pstl_stable_sort.h> +#include <__config> +#include <__functional/operations.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +void __pstl_sort(); + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +sort(_ExecutionPolicy&& __policy, _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp) { + std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_sort), + [&__policy](_RandomAccessIterator __g_first, _RandomAccessIterator __g_last, _Comp __g_comp) { + std::stable_sort(__policy, std::move(__g_first), std::move(__g_last), std::move(__g_comp)); + }, + std::move(__first), + std::move(__last), + std::move(__comp)); +} + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +sort(_ExecutionPolicy&& __policy, _RandomAccessIterator __first, _RandomAccessIterator __last) { + std::sort(std::forward<_ExecutionPolicy>(__policy), std::move(__first), std::move(__last), less{}); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_SORT_H diff --git a/lib/libcxx/include/__algorithm/pstl_stable_sort.h b/lib/libcxx/include/__algorithm/pstl_stable_sort.h new file mode 100644 index 0000000..510ffd8 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_stable_sort.h @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H +#define _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H + +#include <__algorithm/pstl_backend.h> +#include <__config> +#include <__functional/operations.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +stable_sort(_ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp = {}) { + using _Backend = typename __select_backend<_RawPolicy>::type; + std::__pstl_stable_sort<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__comp)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H diff --git a/lib/libcxx/include/__algorithm/pstl_transform.h b/lib/libcxx/include/__algorithm/pstl_transform.h new file mode 100644 index 0000000..27d9534 --- /dev/null +++ b/lib/libcxx/include/__algorithm/pstl_transform.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PSTL_TRANSFORM_H +#define _LIBCPP___ALGORITHM_PSTL_TRANSFORM_H + +#include <__algorithm/pstl_backend.h> +#include <__config> +#include <__iterator/cpp17_iterator_concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_execution_policy.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/terminate_on_exception.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator transform( + _ExecutionPolicy&&, + _ForwardIterator __first, + _ForwardIterator __last, + _ForwardOutIterator __result, + _UnaryOperation __op) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardOutIterator); + _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(_ForwardOutIterator, decltype(__op(*__first))); + using _Backend = typename __select_backend<_RawPolicy>::type; + return std::__pstl_transform<_RawPolicy>( + _Backend{}, std::move(__first), std::move(__last), std::move(__result), std::move(__op)); +} + +template , + enable_if_t, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardOutIterator transform( + _ExecutionPolicy&&, + _ForwardIterator1 __first1, + _ForwardIterator1 __last1, + _ForwardIterator2 __first2, + _ForwardOutIterator __result, + _BinaryOperation __op) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1); + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2); + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardOutIterator); + _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(_ForwardOutIterator, decltype(__op(*__first1, *__first2))); + using _Backend = typename __select_backend<_RawPolicy>::type; + return std::__pstl_transform<_RawPolicy>( + _Backend{}, std::move(__first1), std::move(__last1), std::move(__first2), std::move(__result), std::move(__op)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___ALGORITHM_PSTL_TRANSFORM_H diff --git a/lib/libcxx/include/__algorithm/push_heap.h b/lib/libcxx/include/__algorithm/push_heap.h new file mode 100644 index 0000000..82b571e --- /dev/null +++ b/lib/libcxx/include/__algorithm/push_heap.h @@ -0,0 +1,82 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_PUSH_HEAP_H +#define _LIBCPP___ALGORITHM_PUSH_HEAP_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __sift_up(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare&& __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len) { + using value_type = typename iterator_traits<_RandomAccessIterator>::value_type; + + if (__len > 1) { + __len = (__len - 2) / 2; + _RandomAccessIterator __ptr = __first + __len; + + if (__comp(*__ptr, *--__last)) { + value_type __t(_IterOps<_AlgPolicy>::__iter_move(__last)); + do { + *__last = _IterOps<_AlgPolicy>::__iter_move(__ptr); + __last = __ptr; + if (__len == 0) + break; + __len = (__len - 1) / 2; + __ptr = __first + __len; + } while (__comp(*__ptr, __t)); + + *__last = std::move(__t); + } + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare& __comp) { + typename iterator_traits<_RandomAccessIterator>::difference_type __len = __last - __first; + std::__sift_up<_AlgPolicy, __comp_ref_type<_Compare> >(std::move(__first), std::move(__last), __comp, __len); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + static_assert(std::is_copy_constructible<_RandomAccessIterator>::value, "Iterators must be copy constructible."); + static_assert(std::is_copy_assignable<_RandomAccessIterator>::value, "Iterators must be copy assignable."); + + std::__push_heap<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::push_heap(std::move(__first), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_PUSH_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_adjacent_find.h b/lib/libcxx/include/__algorithm/ranges_adjacent_find.h new file mode 100644 index 0000000..5f33192 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_adjacent_find.h @@ -0,0 +1,78 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ADJACENT_FIND_H +#define _LIBCPP___ALGORITHM_RANGES_ADJACENT_FIND_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __adjacent_find { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __adjacent_find_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + if (__first == __last) + return __first; + + auto __i = __first; + while (++__i != __last) { + if (std::invoke(__pred, std::invoke(__proj, *__first), std::invoke(__proj, *__i))) + return __first; + __first = __i; + } + return __i; + } + + template _Sent, + class _Proj = identity, + indirect_binary_predicate, projected<_Iter, _Proj>> _Pred = ranges::equal_to> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Pred __pred = {}, _Proj __proj = {}) const { + return __adjacent_find_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>, projected, _Proj>> + _Pred = ranges::equal_to> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, _Pred __pred = {}, _Proj __proj = {}) const { + return __adjacent_find_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __adjacent_find + +inline namespace __cpo { +inline constexpr auto adjacent_find = __adjacent_find::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ADJACENT_FIND_H diff --git a/lib/libcxx/include/__algorithm/ranges_all_of.h b/lib/libcxx/include/__algorithm/ranges_all_of.h new file mode 100644 index 0000000..39a2ae4 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_all_of.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ALL_OF_H +#define _LIBCPP___ALGORITHM_RANGES_ALL_OF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __all_of { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool __all_of_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (!std::invoke(__pred, std::invoke(__proj, *__first))) + return false; + } + return true; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return __all_of_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __all_of_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __all_of + +inline namespace __cpo { +inline constexpr auto all_of = __all_of::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ALL_OF_H diff --git a/lib/libcxx/include/__algorithm/ranges_any_of.h b/lib/libcxx/include/__algorithm/ranges_any_of.h new file mode 100644 index 0000000..2ca8531 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_any_of.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ANY_OF_H +#define _LIBCPP___ALGORITHM_RANGES_ANY_OF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __any_of { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool __any_of_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + return true; + } + return false; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Pred __pred = {}, _Proj __proj = {}) const { + return __any_of_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __any_of_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __any_of + +inline namespace __cpo { +inline constexpr auto any_of = __any_of::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ANY_OF_H diff --git a/lib/libcxx/include/__algorithm/ranges_binary_search.h b/lib/libcxx/include/__algorithm/ranges_binary_search.h new file mode 100644 index 0000000..22008e0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_binary_search.h @@ -0,0 +1,68 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_BINARY_SEARCH_H +#define _LIBCPP___ALGORITHM_RANGES_BINARY_SEARCH_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/lower_bound.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __binary_search { +struct __fn { + template _Sent, + class _Type, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp, __proj); + return __ret != __last && !std::invoke(__comp, __value, std::invoke(__proj, *__ret)); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __first = ranges::begin(__r); + auto __last = ranges::end(__r); + auto __ret = std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp, __proj); + return __ret != __last && !std::invoke(__comp, __value, std::invoke(__proj, *__ret)); + } +}; +} // namespace __binary_search + +inline namespace __cpo { +inline constexpr auto binary_search = __binary_search::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_BINARY_SEARCH_H diff --git a/lib/libcxx/include/__algorithm/ranges_clamp.h b/lib/libcxx/include/__algorithm/ranges_clamp.h new file mode 100644 index 0000000..9613f7f --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_clamp.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_CLAMP_H +#define _LIBCPP___ALGORITHM_RANGES_CLAMP_H + +#include <__assert> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __clamp { +struct __fn { + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr const _Type& operator()( + const _Type& __value, const _Type& __low, const _Type& __high, _Comp __comp = {}, _Proj __proj = {}) const { + _LIBCPP_ASSERT_UNCATEGORIZED(!bool(std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __low))), + "Bad bounds passed to std::ranges::clamp"); + + if (std::invoke(__comp, std::invoke(__proj, __value), std::invoke(__proj, __low))) + return __low; + else if (std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __value))) + return __high; + else + return __value; + } +}; +} // namespace __clamp + +inline namespace __cpo { +inline constexpr auto clamp = __clamp::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_CLAMP_H diff --git a/lib/libcxx/include/__algorithm/ranges_copy.h b/lib/libcxx/include/__algorithm/ranges_copy.h new file mode 100644 index 0000000..1c87f07 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_copy.h @@ -0,0 +1,66 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_COPY_H + +#include <__algorithm/copy.h> +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__iterator/concepts.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using copy_result = in_out_result<_InIter, _OutIter>; + +namespace __copy { +struct __fn { + template _Sent, weakly_incrementable _OutIter> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr copy_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + auto __ret = std::__copy<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr copy_result, _OutIter> + operator()(_Range&& __r, _OutIter __result) const { + auto __ret = std::__copy<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; +} // namespace __copy + +inline namespace __cpo { +inline constexpr auto copy = __copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_copy_backward.h b/lib/libcxx/include/__algorithm/ranges_copy_backward.h new file mode 100644 index 0000000..865e944 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_copy_backward.h @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H +#define _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H + +#include <__algorithm/copy_backward.h> +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using copy_backward_result = in_out_result<_Ip, _Op>; + +namespace __copy_backward { +struct __fn { + template _Sent1, bidirectional_iterator _InIter2> + requires indirectly_copyable<_InIter1, _InIter2> + _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result<_InIter1, _InIter2> + operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const { + auto __ret = std::__copy_backward<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template + requires indirectly_copyable, _Iter> + _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result, _Iter> + operator()(_Range&& __r, _Iter __result) const { + auto __ret = std::__copy_backward<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; +} // namespace __copy_backward + +inline namespace __cpo { +inline constexpr auto copy_backward = __copy_backward::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H diff --git a/lib/libcxx/include/__algorithm/ranges_copy_if.h b/lib/libcxx/include/__algorithm/ranges_copy_if.h new file mode 100644 index 0000000..b77dbd3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_copy_if.h @@ -0,0 +1,82 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_IF_H +#define _LIBCPP___ALGORITHM_RANGES_COPY_IF_H + +#include <__algorithm/in_out_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using copy_if_result = in_out_result<_Ip, _Op>; + +namespace __copy_if { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr copy_if_result<_InIter, _OutIter> + __copy_if_impl(_InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) { + *__result = *__first; + ++__result; + } + } + return {std::move(__first), std::move(__result)}; + } + + template _Sent, + weakly_incrementable _OutIter, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires indirectly_copyable<_Iter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr copy_if_result<_Iter, _OutIter> + operator()(_Iter __first, _Sent __last, _OutIter __result, _Pred __pred, _Proj __proj = {}) const { + return __copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj); + } + + template , _Proj>> _Pred> + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr copy_if_result, _OutIter> + operator()(_Range&& __r, _OutIter __result, _Pred __pred, _Proj __proj = {}) const { + return __copy_if_impl(ranges::begin(__r), ranges::end(__r), std::move(__result), __pred, __proj); + } +}; +} // namespace __copy_if + +inline namespace __cpo { +inline constexpr auto copy_if = __copy_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_copy_n.h b/lib/libcxx/include/__algorithm/ranges_copy_n.h new file mode 100644 index 0000000..99e8eee --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_copy_n.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_N_H +#define _LIBCPP___ALGORITHM_RANGES_COPY_N_H + +#include <__algorithm/copy.h> +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/ranges_copy.h> +#include <__config> +#include <__functional/identity.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/unreachable_sentinel.h> +#include <__iterator/wrap_iter.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +using copy_n_result = in_out_result<_Ip, _Op>; + +namespace __copy_n { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static copy_n_result<_InIter, _OutIter> + __go(_InIter __first, _DiffType __n, _OutIter __result) { + while (__n != 0) { + *__result = *__first; + ++__first; + ++__result; + --__n; + } + return {std::move(__first), std::move(__result)}; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr static copy_n_result<_InIter, _OutIter> + __go(_InIter __first, _DiffType __n, _OutIter __result) { + auto __ret = std::__copy<_RangeAlgPolicy>(__first, __first + __n, __result); + return {__ret.first, __ret.second}; + } + + template + requires indirectly_copyable<_Ip, _Op> + _LIBCPP_HIDE_FROM_ABI constexpr copy_n_result<_Ip, _Op> + operator()(_Ip __first, iter_difference_t<_Ip> __n, _Op __result) const { + return __go(std::move(__first), __n, std::move(__result)); + } +}; +} // namespace __copy_n + +inline namespace __cpo { +inline constexpr auto copy_n = __copy_n::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_RANGES_COPY_N_H diff --git a/lib/libcxx/include/__algorithm/ranges_count.h b/lib/libcxx/include/__algorithm/ranges_count.h new file mode 100644 index 0000000..82f5456 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_count.h @@ -0,0 +1,62 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COUNT_H +#define _LIBCPP___ALGORITHM_RANGES_COUNT_H + +#include <__algorithm/ranges_count_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __count { +struct __fn { + template _Sent, class _Type, class _Proj = identity> + requires indirect_binary_predicate, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter> + operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __e) { return __e == __value; }; + return ranges::__count_if_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template + requires indirect_binary_predicate, _Proj>, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range> + operator()(_Range&& __r, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __e) { return __e == __value; }; + return ranges::__count_if_impl(ranges::begin(__r), ranges::end(__r), __pred, __proj); + } +}; +} // namespace __count + +inline namespace __cpo { +inline constexpr auto count = __count::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_COUNT_H diff --git a/lib/libcxx/include/__algorithm/ranges_count_if.h b/lib/libcxx/include/__algorithm/ranges_count_if.h new file mode 100644 index 0000000..92f37d0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_count_if.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COUNT_IF_H +#define _LIBCPP___ALGORITHM_RANGES_COUNT_IF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +template +_LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter> +__count_if_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + iter_difference_t<_Iter> __counter(0); + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + ++__counter; + } + return __counter; +} + +namespace __count_if { +struct __fn { + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Predicate> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter> + operator()(_Iter __first, _Sent __last, _Predicate __pred, _Proj __proj = {}) const { + return ranges::__count_if_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Predicate> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range> + operator()(_Range&& __r, _Predicate __pred, _Proj __proj = {}) const { + return ranges::__count_if_impl(ranges::begin(__r), ranges::end(__r), __pred, __proj); + } +}; +} // namespace __count_if + +inline namespace __cpo { +inline constexpr auto count_if = __count_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_COUNT_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_equal.h b/lib/libcxx/include/__algorithm/ranges_equal.h new file mode 100644 index 0000000..4cb1f7d --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_equal.h @@ -0,0 +1,104 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_EQUAL_H +#define _LIBCPP___ALGORITHM_RANGES_EQUAL_H + +#include <__algorithm/equal.h> +#include <__algorithm/unwrap_range.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/indirectly_comparable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __equal { +struct __fn { + template _Sent1, + input_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + if constexpr (sized_sentinel_for<_Sent1, _Iter1> && sized_sentinel_for<_Sent2, _Iter2>) { + if (__last1 - __first1 != __last2 - __first2) + return false; + } + auto __unwrapped1 = std::__unwrap_range(std::move(__first1), std::move(__last1)); + auto __unwrapped2 = std::__unwrap_range(std::move(__first2), std::move(__last2)); + return std::__equal_impl( + std::move(__unwrapped1.first), + std::move(__unwrapped1.second), + std::move(__unwrapped2.first), + std::move(__unwrapped2.second), + __pred, + __proj1, + __proj2); + } + + template + requires indirectly_comparable, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + if constexpr (sized_range<_Range1> && sized_range<_Range2>) { + if (ranges::distance(__range1) != ranges::distance(__range2)) + return false; + } + auto __unwrapped1 = std::__unwrap_range(ranges::begin(__range1), ranges::end(__range1)); + auto __unwrapped2 = std::__unwrap_range(ranges::begin(__range2), ranges::end(__range2)); + return std::__equal_impl( + std::move(__unwrapped1.first), + std::move(__unwrapped1.second), + std::move(__unwrapped2.first), + std::move(__unwrapped2.second), + __pred, + __proj1, + __proj2); + return false; + } +}; +} // namespace __equal + +inline namespace __cpo { +inline constexpr auto equal = __equal::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_EQUAL_H diff --git a/lib/libcxx/include/__algorithm/ranges_equal_range.h b/lib/libcxx/include/__algorithm/ranges_equal_range.h new file mode 100644 index 0000000..ed78cf3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_equal_range.h @@ -0,0 +1,75 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM __project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_EQUAL_RANGE_H +#define _LIBCPP___ALGORITHM_RANGES_EQUAL_RANGE_H + +#include <__algorithm/equal_range.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__ranges/subrange.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __equal_range { + +struct __fn { + template _Sent, + class _Tp, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, _Sent __last, const _Tp& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__equal_range<_RangeAlgPolicy>(std::move(__first), std::move(__last), __value, __comp, __proj); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, const _Tp& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = + std::__equal_range<_RangeAlgPolicy>(ranges::begin(__range), ranges::end(__range), __value, __comp, __proj); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; + +} // namespace __equal_range + +inline namespace __cpo { +inline constexpr auto equal_range = __equal_range::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_EQUAL_RANGE_H diff --git a/lib/libcxx/include/__algorithm/ranges_fill.h b/lib/libcxx/include/__algorithm/ranges_fill.h new file mode 100644 index 0000000..88a892f --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_fill.h @@ -0,0 +1,57 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FILL_H +#define _LIBCPP___ALGORITHM_RANGES_FILL_H + +#include <__algorithm/ranges_fill_n.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __fill { +struct __fn { + template _Iter, sentinel_for<_Iter> _Sent> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(_Iter __first, _Sent __last, const _Type& __value) const { + if constexpr (random_access_iterator<_Iter> && sized_sentinel_for<_Sent, _Iter>) { + return ranges::fill_n(__first, __last - __first, __value); + } else { + for (; __first != __last; ++__first) + *__first = __value; + return __first; + } + } + + template _Range> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator()(_Range&& __range, const _Type& __value) const { + return (*this)(ranges::begin(__range), ranges::end(__range), __value); + } +}; +} // namespace __fill + +inline namespace __cpo { +inline constexpr auto fill = __fill::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FILL_H diff --git a/lib/libcxx/include/__algorithm/ranges_fill_n.h b/lib/libcxx/include/__algorithm/ranges_fill_n.h new file mode 100644 index 0000000..dbd8ec2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_fill_n.h @@ -0,0 +1,48 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FILL_N_H +#define _LIBCPP___ALGORITHM_RANGES_FILL_N_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __fill_n { +struct __fn { + template _Iter> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, iter_difference_t<_Iter> __n, const _Type& __value) const { + for (; __n != 0; --__n) { + *__first = __value; + ++__first; + } + return __first; + } +}; +} // namespace __fill_n + +inline namespace __cpo { +inline constexpr auto fill_n = __fill_n::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FILL_N_H diff --git a/lib/libcxx/include/__algorithm/ranges_find.h b/lib/libcxx/include/__algorithm/ranges_find.h new file mode 100644 index 0000000..de870e3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_find.h @@ -0,0 +1,75 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FIND_H +#define _LIBCPP___ALGORITHM_RANGES_FIND_H + +#include <__algorithm/find.h> +#include <__algorithm/ranges_find_if.h> +#include <__algorithm/unwrap_range.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __find { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr _Iter + __find_unwrap(_Iter __first, _Sent __last, const _Tp& __value, _Proj& __proj) { + if constexpr (forward_iterator<_Iter>) { + auto [__first_un, __last_un] = std::__unwrap_range(__first, std::move(__last)); + return std::__rewrap_range<_Sent>( + std::move(__first), std::__find_impl(std::move(__first_un), std::move(__last_un), __value, __proj)); + } else { + return std::__find_impl(std::move(__first), std::move(__last), __value, __proj); + } + } + + template _Sp, class _Tp, class _Proj = identity> + requires indirect_binary_predicate, const _Tp*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Ip + operator()(_Ip __first, _Sp __last, const _Tp& __value, _Proj __proj = {}) const { + return __find_unwrap(std::move(__first), std::move(__last), __value, __proj); + } + + template + requires indirect_binary_predicate, _Proj>, const _Tp*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> + operator()(_Rp&& __r, const _Tp& __value, _Proj __proj = {}) const { + return __find_unwrap(ranges::begin(__r), ranges::end(__r), __value, __proj); + } +}; +} // namespace __find + +inline namespace __cpo { +inline constexpr auto find = __find::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FIND_H diff --git a/lib/libcxx/include/__algorithm/ranges_find_end.h b/lib/libcxx/include/__algorithm/ranges_find_end.h new file mode 100644 index 0000000..2c57ad4 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_find_end.h @@ -0,0 +1,98 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FIND_END_H +#define _LIBCPP___ALGORITHM_RANGES_FIND_END_H + +#include <__algorithm/find_end.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/ranges_iterator_concept.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __find_end { +struct __fn { + template _Sent1, + forward_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter1> operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__find_end_impl<_RangeAlgPolicy>( + __first1, + __last1, + __first2, + __last2, + __pred, + __proj1, + __proj2, + __iterator_concept<_Iter1>(), + __iterator_concept<_Iter2>()); + return {__ret.first, __ret.second}; + } + + template + requires indirectly_comparable, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range1> operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + auto __ret = std::__find_end_impl<_RangeAlgPolicy>( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __pred, + __proj1, + __proj2, + __iterator_concept>(), + __iterator_concept>()); + return {__ret.first, __ret.second}; + } +}; +} // namespace __find_end + +inline namespace __cpo { +inline constexpr auto find_end = __find_end::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FIND_END_H diff --git a/lib/libcxx/include/__algorithm/ranges_find_first_of.h b/lib/libcxx/include/__algorithm/ranges_find_first_of.h new file mode 100644 index 0000000..ec6d52c --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_find_first_of.h @@ -0,0 +1,101 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FIND_FIRST_OF_H +#define _LIBCPP___ALGORITHM_RANGES_FIND_FIRST_OF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __find_first_of { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter1 __find_first_of_impl( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2) { + for (; __first1 != __last1; ++__first1) { + for (auto __j = __first2; __j != __last2; ++__j) { + if (std::invoke(__pred, std::invoke(__proj1, *__first1), std::invoke(__proj2, *__j))) + return __first1; + } + } + return __first1; + } + + template _Sent1, + forward_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter1 operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __find_first_of_impl( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __pred, __proj1, __proj2); + } + + template + requires indirectly_comparable, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range1> operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + return __find_first_of_impl( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __pred, + __proj1, + __proj2); + } +}; +} // namespace __find_first_of + +inline namespace __cpo { +inline constexpr auto find_first_of = __find_first_of::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FIND_FIRST_OF_H diff --git a/lib/libcxx/include/__algorithm/ranges_find_if.h b/lib/libcxx/include/__algorithm/ranges_find_if.h new file mode 100644 index 0000000..af54a50 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_find_if.h @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FIND_IF_H +#define _LIBCPP___ALGORITHM_RANGES_FIND_IF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +_LIBCPP_HIDE_FROM_ABI constexpr _Ip __find_if_impl(_Ip __first, _Sp __last, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + break; + } + return __first; +} + +namespace __find_if { +struct __fn { + template _Sp, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Ip + operator()(_Ip __first, _Sp __last, _Pred __pred, _Proj __proj = {}) const { + return ranges::__find_if_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> + operator()(_Rp&& __r, _Pred __pred, _Proj __proj = {}) const { + return ranges::__find_if_impl(ranges::begin(__r), ranges::end(__r), __pred, __proj); + } +}; +} // namespace __find_if + +inline namespace __cpo { +inline constexpr auto find_if = __find_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FIND_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_find_if_not.h b/lib/libcxx/include/__algorithm/ranges_find_if_not.h new file mode 100644 index 0000000..6beade1 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_find_if_not.h @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FIND_IF_NOT_H +#define _LIBCPP___ALGORITHM_RANGES_FIND_IF_NOT_H + +#include <__algorithm/ranges_find_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __find_if_not { +struct __fn { + template _Sp, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Ip + operator()(_Ip __first, _Sp __last, _Pred __pred, _Proj __proj = {}) const { + auto __pred2 = [&](auto&& __e) { return !std::invoke(__pred, std::forward(__e)); }; + return ranges::__find_if_impl(std::move(__first), std::move(__last), __pred2, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> + operator()(_Rp&& __r, _Pred __pred, _Proj __proj = {}) const { + auto __pred2 = [&](auto&& __e) { return !std::invoke(__pred, std::forward(__e)); }; + return ranges::__find_if_impl(ranges::begin(__r), ranges::end(__r), __pred2, __proj); + } +}; +} // namespace __find_if_not + +inline namespace __cpo { +inline constexpr auto find_if_not = __find_if_not::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FIND_IF_NOT_H diff --git a/lib/libcxx/include/__algorithm/ranges_for_each.h b/lib/libcxx/include/__algorithm/ranges_for_each.h new file mode 100644 index 0000000..7878ed2 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_for_each.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FOR_EACH_H +#define _LIBCPP___ALGORITHM_RANGES_FOR_EACH_H + +#include <__algorithm/in_fun_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using for_each_result = in_fun_result<_Iter, _Func>; + +namespace __for_each { +struct __fn { +private: + template + _LIBCPP_HIDE_FROM_ABI constexpr static for_each_result<_Iter, _Func> + __for_each_impl(_Iter __first, _Sent __last, _Func& __func, _Proj& __proj) { + for (; __first != __last; ++__first) + std::invoke(__func, std::invoke(__proj, *__first)); + return {std::move(__first), std::move(__func)}; + } + +public: + template _Sent, + class _Proj = identity, + indirectly_unary_invocable> _Func> + _LIBCPP_HIDE_FROM_ABI constexpr for_each_result<_Iter, _Func> + operator()(_Iter __first, _Sent __last, _Func __func, _Proj __proj = {}) const { + return __for_each_impl(std::move(__first), std::move(__last), __func, __proj); + } + + template , _Proj>> _Func> + _LIBCPP_HIDE_FROM_ABI constexpr for_each_result, _Func> + operator()(_Range&& __range, _Func __func, _Proj __proj = {}) const { + return __for_each_impl(ranges::begin(__range), ranges::end(__range), __func, __proj); + } +}; +} // namespace __for_each + +inline namespace __cpo { +inline constexpr auto for_each = __for_each::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FOR_EACH_H diff --git a/lib/libcxx/include/__algorithm/ranges_for_each_n.h b/lib/libcxx/include/__algorithm/ranges_for_each_n.h new file mode 100644 index 0000000..53ccb9a --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_for_each_n.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_FOR_EACH_N_H +#define _LIBCPP___ALGORITHM_RANGES_FOR_EACH_N_H + +#include <__algorithm/in_fun_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using for_each_n_result = in_fun_result<_Iter, _Func>; + +namespace __for_each_n { +struct __fn { + template > _Func> + _LIBCPP_HIDE_FROM_ABI constexpr for_each_n_result<_Iter, _Func> + operator()(_Iter __first, iter_difference_t<_Iter> __count, _Func __func, _Proj __proj = {}) const { + while (__count-- > 0) { + std::invoke(__func, std::invoke(__proj, *__first)); + ++__first; + } + return {std::move(__first), std::move(__func)}; + } +}; +} // namespace __for_each_n + +inline namespace __cpo { +inline constexpr auto for_each_n = __for_each_n::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_FOR_EACH_N_H diff --git a/lib/libcxx/include/__algorithm/ranges_generate.h b/lib/libcxx/include/__algorithm/ranges_generate.h new file mode 100644 index 0000000..3ff1e13 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_generate.h @@ -0,0 +1,68 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_GENERATE_H +#define _LIBCPP___ALGORITHM_RANGES_GENERATE_H + +#include <__concepts/constructible.h> +#include <__concepts/invocable.h> +#include <__config> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __generate { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _OutIter __generate_fn_impl(_OutIter __first, _Sent __last, _Func& __gen) { + for (; __first != __last; ++__first) { + *__first = __gen(); + } + + return __first; + } + + template _Sent, copy_constructible _Func> + requires invocable<_Func&> && indirectly_writable<_OutIter, invoke_result_t<_Func&>> + _LIBCPP_HIDE_FROM_ABI constexpr _OutIter operator()(_OutIter __first, _Sent __last, _Func __gen) const { + return __generate_fn_impl(std::move(__first), std::move(__last), __gen); + } + + template + requires invocable<_Func&> && output_range<_Range, invoke_result_t<_Func&>> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator()(_Range&& __range, _Func __gen) const { + return __generate_fn_impl(ranges::begin(__range), ranges::end(__range), __gen); + } +}; + +} // namespace __generate + +inline namespace __cpo { +inline constexpr auto generate = __generate::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_GENERATE_H diff --git a/lib/libcxx/include/__algorithm/ranges_generate_n.h b/lib/libcxx/include/__algorithm/ranges_generate_n.h new file mode 100644 index 0000000..c025c62 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_generate_n.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_GENERATE_N_H +#define _LIBCPP___ALGORITHM_RANGES_GENERATE_N_H + +#include <__concepts/constructible.h> +#include <__concepts/invocable.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __generate_n { + +struct __fn { + template + requires invocable<_Func&> && indirectly_writable<_OutIter, invoke_result_t<_Func&>> + _LIBCPP_HIDE_FROM_ABI constexpr _OutIter + operator()(_OutIter __first, iter_difference_t<_OutIter> __n, _Func __gen) const { + for (; __n > 0; --__n) { + *__first = __gen(); + ++__first; + } + + return __first; + } +}; + +} // namespace __generate_n + +inline namespace __cpo { +inline constexpr auto generate_n = __generate_n::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_GENERATE_N_H diff --git a/lib/libcxx/include/__algorithm/ranges_includes.h b/lib/libcxx/include/__algorithm/ranges_includes.h new file mode 100644 index 0000000..aa35080 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_includes.h @@ -0,0 +1,93 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_INCLUDES_H +#define _LIBCPP___ALGORITHM_RANGES_INCLUDES_H + +#include <__algorithm/includes.h> +#include <__algorithm/make_projected.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __includes { + +struct __fn { + template _Sent1, + input_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Proj1 = identity, + class _Proj2 = identity, + indirect_strict_weak_order, projected<_Iter2, _Proj2>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return std::__includes( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__comp), + std::move(__proj1), + std::move(__proj2)); + } + + template , _Proj1>, projected, _Proj2>> + _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Range1&& __range1, _Range2&& __range2, _Comp __comp = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + return std::__includes( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + std::move(__comp), + std::move(__proj1), + std::move(__proj2)); + } +}; + +} // namespace __includes + +inline namespace __cpo { +inline constexpr auto includes = __includes::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_INCLUDES_H diff --git a/lib/libcxx/include/__algorithm/ranges_inplace_merge.h b/lib/libcxx/include/__algorithm/ranges_inplace_merge.h new file mode 100644 index 0000000..86001b0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_inplace_merge.h @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H +#define _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H + +#include <__algorithm/inplace_merge.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __inplace_merge { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __inplace_merge_impl(_Iter __first, _Iter __middle, _Sent __last, _Comp&& __comp, _Proj&& __proj) { + auto __last_iter = ranges::next(__middle, __last); + std::__inplace_merge<_RangeAlgPolicy>( + std::move(__first), std::move(__middle), __last_iter, std::__make_projected(__comp, __proj)); + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI _Iter + operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __inplace_merge_impl( + std::move(__first), std::move(__middle), std::move(__last), std::move(__comp), std::move(__proj)); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI borrowed_iterator_t<_Range> + operator()(_Range&& __range, iterator_t<_Range> __middle, _Comp __comp = {}, _Proj __proj = {}) const { + return __inplace_merge_impl( + ranges::begin(__range), std::move(__middle), ranges::end(__range), std::move(__comp), std::move(__proj)); + } +}; + +} // namespace __inplace_merge + +inline namespace __cpo { +inline constexpr auto inplace_merge = __inplace_merge::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_heap.h b/lib/libcxx/include/__algorithm/ranges_is_heap.h new file mode 100644 index 0000000..f298c34 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_heap.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H +#define _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H + +#include <__algorithm/is_heap_until.h> +#include <__algorithm/make_projected.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __is_heap { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool + __is_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + auto&& __projected_comp = std::__make_projected(__comp, __proj); + + auto __result = std::__is_heap_until(std::move(__first), std::move(__last_iter), __projected_comp); + return __result == __last; + } + + template _Sent, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __is_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + return __is_heap_fn_impl(ranges::begin(__range), ranges::end(__range), __comp, __proj); + } +}; + +} // namespace __is_heap + +inline namespace __cpo { +inline constexpr auto is_heap = __is_heap::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_heap_until.h b/lib/libcxx/include/__algorithm/ranges_is_heap_until.h new file mode 100644 index 0000000..73f13fb --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_heap_until.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_IS_HEAP_UNTIL_H +#define _LIBCPP___ALGORITHM_RANGES_IS_HEAP_UNTIL_H + +#include <__algorithm/is_heap_until.h> +#include <__algorithm/make_projected.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __is_heap_until { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __is_heap_until_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + auto&& __projected_comp = std::__make_projected(__comp, __proj); + + return std::__is_heap_until(std::move(__first), std::move(__last_iter), __projected_comp); + } + + template _Sent, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __is_heap_until_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + return __is_heap_until_fn_impl(ranges::begin(__range), ranges::end(__range), __comp, __proj); + } +}; + +} // namespace __is_heap_until + +inline namespace __cpo { +inline constexpr auto is_heap_until = __is_heap_until::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_IS_HEAP_UNTIL_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_partitioned.h b/lib/libcxx/include/__algorithm/ranges_is_partitioned.h new file mode 100644 index 0000000..76db870 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_partitioned.h @@ -0,0 +1,81 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_IS_PARTITIONED_H +#define _LIBCPP___ALGORITHM_RANGES_IS_PARTITIONED_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __is_partitioned { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool + __is_partitioned_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (!std::invoke(__pred, std::invoke(__proj, *__first))) + break; + } + + if (__first == __last) + return true; + ++__first; + + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + return false; + } + + return true; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return __is_partitioned_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __is_partitioned_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __is_partitioned + +inline namespace __cpo { +inline constexpr auto is_partitioned = __is_partitioned::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_IS_PARTITIONED_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_permutation.h b/lib/libcxx/include/__algorithm/ranges_is_permutation.h new file mode 100644 index 0000000..2b99839 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_permutation.h @@ -0,0 +1,102 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_IS_PERMUTATION_H +#define _LIBCPP___ALGORITHM_RANGES_IS_PERMUTATION_H + +#include <__algorithm/is_permutation.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __is_permutation { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool __is_permutation_func_impl( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2) { + return std::__is_permutation<_RangeAlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __pred, __proj1, __proj2); + } + + template < + forward_iterator _Iter1, + sentinel_for<_Iter1> _Sent1, + forward_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Proj1 = identity, + class _Proj2 = identity, + indirect_equivalence_relation, projected<_Iter2, _Proj2>> _Pred = ranges::equal_to> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __is_permutation_func_impl( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __pred, __proj1, __proj2); + } + + template , _Proj1>, + projected, _Proj2>> _Pred = ranges::equal_to> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + if constexpr (sized_range<_Range1> && sized_range<_Range2>) { + if (ranges::distance(__range1) != ranges::distance(__range2)) + return false; + } + + return __is_permutation_func_impl( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __pred, + __proj1, + __proj2); + } +}; +} // namespace __is_permutation + +inline namespace __cpo { +inline constexpr auto is_permutation = __is_permutation::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_IS_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_sorted.h b/lib/libcxx/include/__algorithm/ranges_is_sorted.h new file mode 100644 index 0000000..3eb2c76 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_sorted.h @@ -0,0 +1,62 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP__ALGORITHM_RANGES_IS_SORTED_H +#define _LIBCPP__ALGORITHM_RANGES_IS_SORTED_H + +#include <__algorithm/ranges_is_sorted_until.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __is_sorted { +struct __fn { + template _Sent, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return ranges::__is_sorted_until_impl(std::move(__first), __last, __comp, __proj) == __last; + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + auto __last = ranges::end(__range); + return ranges::__is_sorted_until_impl(ranges::begin(__range), __last, __comp, __proj) == __last; + } +}; +} // namespace __is_sorted + +inline namespace __cpo { +inline constexpr auto is_sorted = __is_sorted::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP__ALGORITHM_RANGES_IS_SORTED_H diff --git a/lib/libcxx/include/__algorithm/ranges_is_sorted_until.h b/lib/libcxx/include/__algorithm/ranges_is_sorted_until.h new file mode 100644 index 0000000..19e9875 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_is_sorted_until.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP__ALGORITHM_RANGES_IS_SORTED_UNTIL_H +#define _LIBCPP__ALGORITHM_RANGES_IS_SORTED_UNTIL_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +_LIBCPP_HIDE_FROM_ABI constexpr _Iter +__is_sorted_until_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + if (__first == __last) + return __first; + auto __i = __first; + while (++__i != __last) { + if (std::invoke(__comp, std::invoke(__proj, *__i), std::invoke(__proj, *__first))) + return __i; + __first = __i; + } + return __i; +} + +namespace __is_sorted_until { +struct __fn { + template _Sent, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return ranges::__is_sorted_until_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + return ranges::__is_sorted_until_impl(ranges::begin(__range), ranges::end(__range), __comp, __proj); + } +}; +} // namespace __is_sorted_until + +inline namespace __cpo { +inline constexpr auto is_sorted_until = __is_sorted_until::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP__ALGORITHM_RANGES_IS_SORTED_UNTIL_H diff --git a/lib/libcxx/include/__algorithm/ranges_iterator_concept.h b/lib/libcxx/include/__algorithm/ranges_iterator_concept.h new file mode 100644 index 0000000..9a92030 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_iterator_concept.h @@ -0,0 +1,51 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ITERATOR_CONCEPT_H +#define _LIBCPP___ALGORITHM_RANGES_ITERATOR_CONCEPT_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +consteval auto __get_iterator_concept() { + using _Iter = __remove_cvref_t<_IterMaybeQualified>; + + if constexpr (contiguous_iterator<_Iter>) + return contiguous_iterator_tag(); + else if constexpr (random_access_iterator<_Iter>) + return random_access_iterator_tag(); + else if constexpr (bidirectional_iterator<_Iter>) + return bidirectional_iterator_tag(); + else if constexpr (forward_iterator<_Iter>) + return forward_iterator_tag(); + else if constexpr (input_iterator<_Iter>) + return input_iterator_tag(); +} + +template +using __iterator_concept = decltype(__get_iterator_concept<_Iter>()); + +} // namespace ranges +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ITERATOR_CONCEPT_H diff --git a/lib/libcxx/include/__algorithm/ranges_lexicographical_compare.h b/lib/libcxx/include/__algorithm/ranges_lexicographical_compare.h new file mode 100644 index 0000000..5b843df --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_lexicographical_compare.h @@ -0,0 +1,101 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_LEXICOGRAPHICAL_COMPARE_H +#define _LIBCPP___ALGORITHM_RANGES_LEXICOGRAPHICAL_COMPARE_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __lexicographical_compare { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool __lexicographical_compare_impl( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Comp& __comp, + _Proj1& __proj1, + _Proj2& __proj2) { + while (__first2 != __last2) { + if (__first1 == __last1 || std::invoke(__comp, std::invoke(__proj1, *__first1), std::invoke(__proj2, *__first2))) + return true; + if (std::invoke(__comp, std::invoke(__proj2, *__first2), std::invoke(__proj1, *__first1))) + return false; + ++__first1; + ++__first2; + } + return false; + } + + template _Sent1, + input_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Proj1 = identity, + class _Proj2 = identity, + indirect_strict_weak_order, projected<_Iter2, _Proj2>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __lexicographical_compare_impl( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __comp, __proj1, __proj2); + } + + template , _Proj1>, projected, _Proj2>> + _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Range1&& __range1, _Range2&& __range2, _Comp __comp = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + return __lexicographical_compare_impl( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __comp, + __proj1, + __proj2); + } +}; +} // namespace __lexicographical_compare + +inline namespace __cpo { +inline constexpr auto lexicographical_compare = __lexicographical_compare::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_LEXICOGRAPHICAL_COMPARE_H diff --git a/lib/libcxx/include/__algorithm/ranges_lower_bound.h b/lib/libcxx/include/__algorithm/ranges_lower_bound.h new file mode 100644 index 0000000..58b3f81 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_lower_bound.h @@ -0,0 +1,68 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H +#define _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/lower_bound.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +namespace __lower_bound { +struct __fn { + template _Sent, + class _Type, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + return std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + return std::__lower_bound<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __comp, __proj); + } +}; +} // namespace __lower_bound + +inline namespace __cpo { +inline constexpr auto lower_bound = __lower_bound::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H diff --git a/lib/libcxx/include/__algorithm/ranges_make_heap.h b/lib/libcxx/include/__algorithm/ranges_make_heap.h new file mode 100644 index 0000000..f17eabf --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_make_heap.h @@ -0,0 +1,80 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MAKE_HEAP_H +#define _LIBCPP___ALGORITHM_RANGES_MAKE_HEAP_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_heap.h> +#include <__algorithm/make_projected.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __make_heap { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __make_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__make_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __make_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __make_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __make_heap + +inline namespace __cpo { +inline constexpr auto make_heap = __make_heap::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MAKE_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_max.h b/lib/libcxx/include/__algorithm/ranges_max.h new file mode 100644 index 0000000..5cc418d --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_max.h @@ -0,0 +1,100 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MAX_H +#define _LIBCPP___ALGORITHM_RANGES_MAX_H + +#include <__algorithm/ranges_min_element.h> +#include <__assert> +#include <__concepts/copyable.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_PUSH_MACROS +# include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __max { +struct __fn { + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& + operator()(_LIBCPP_LIFETIMEBOUND const _Tp& __a, + _LIBCPP_LIFETIMEBOUND const _Tp& __b, + _Comp __comp = {}, + _Proj __proj = {}) const { + return std::invoke(__comp, std::invoke(__proj, __a), std::invoke(__proj, __b)) ? __b : __a; + } + + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp + operator()(initializer_list<_Tp> __il, _Comp __comp = {}, _Proj __proj = {}) const { + _LIBCPP_ASSERT_UNCATEGORIZED(__il.begin() != __il.end(), "initializer_list must contain at least one element"); + + auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) { return std::invoke(__comp, __rhs, __lhs); }; + return *ranges::__min_element_impl(__il.begin(), __il.end(), __comp_lhs_rhs_swapped, __proj); + } + + template , _Proj>> _Comp = ranges::less> + requires indirectly_copyable_storable, range_value_t<_Rp>*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr range_value_t<_Rp> + operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + auto __first = ranges::begin(__r); + auto __last = ranges::end(__r); + + _LIBCPP_ASSERT_UNCATEGORIZED(__first != __last, "range must contain at least one element"); + + if constexpr (forward_range<_Rp> && !__is_cheap_to_copy>) { + auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) { return std::invoke(__comp, __rhs, __lhs); }; + return *ranges::__min_element_impl(std::move(__first), std::move(__last), __comp_lhs_rhs_swapped, __proj); + } else { + range_value_t<_Rp> __result = *__first; + while (++__first != __last) { + if (std::invoke(__comp, std::invoke(__proj, __result), std::invoke(__proj, *__first))) + __result = *__first; + } + return __result; + } + } +}; +} // namespace __max + +inline namespace __cpo { +inline constexpr auto max = __max::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_STD_VER >= 20 && + +#endif // _LIBCPP___ALGORITHM_RANGES_MAX_H diff --git a/lib/libcxx/include/__algorithm/ranges_max_element.h b/lib/libcxx/include/__algorithm/ranges_max_element.h new file mode 100644 index 0000000..2d92661 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_max_element.h @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H +#define _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H + +#include <__algorithm/ranges_min_element.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __max_element { +struct __fn { + template _Sp, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Ip + operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const { + auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) { return std::invoke(__comp, __rhs, __lhs); }; + return ranges::__min_element_impl(__first, __last, __comp_lhs_rhs_swapped, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> + operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) { return std::invoke(__comp, __rhs, __lhs); }; + return ranges::__min_element_impl(ranges::begin(__r), ranges::end(__r), __comp_lhs_rhs_swapped, __proj); + } +}; +} // namespace __max_element + +inline namespace __cpo { +inline constexpr auto max_element = __max_element::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/ranges_merge.h b/lib/libcxx/include/__algorithm/ranges_merge.h new file mode 100644 index 0000000..7f49154 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_merge.h @@ -0,0 +1,133 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MERGE_H +#define _LIBCPP___ALGORITHM_RANGES_MERGE_H + +#include <__algorithm/in_in_out_result.h> +#include <__algorithm/ranges_copy.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/mergeable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using merge_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; + +namespace __merge { + +template < class _InIter1, + class _Sent1, + class _InIter2, + class _Sent2, + class _OutIter, + class _Comp, + class _Proj1, + class _Proj2> +_LIBCPP_HIDE_FROM_ABI constexpr merge_result<__remove_cvref_t<_InIter1>, + __remove_cvref_t<_InIter2>, + __remove_cvref_t<_OutIter>> +__merge_impl(_InIter1&& __first1, + _Sent1&& __last1, + _InIter2&& __first2, + _Sent2&& __last2, + _OutIter&& __result, + _Comp&& __comp, + _Proj1&& __proj1, + _Proj2&& __proj2) { + for (; __first1 != __last1 && __first2 != __last2; ++__result) { + if (std::invoke(__comp, std::invoke(__proj2, *__first2), std::invoke(__proj1, *__first1))) { + *__result = *__first2; + ++__first2; + } else { + *__result = *__first1; + ++__first1; + } + } + auto __ret1 = ranges::copy(std::move(__first1), std::move(__last1), std::move(__result)); + auto __ret2 = ranges::copy(std::move(__first2), std::move(__last2), std::move(__ret1.out)); + return {std::move(__ret1.in), std::move(__ret2.in), std::move(__ret2.out)}; +} + +struct __fn { + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + class _Comp = less, + class _Proj1 = identity, + class _Proj2 = identity> + requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr merge_result<_InIter1, _InIter2, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __merge::__merge_impl(__first1, __last1, __first2, __last2, __result, __comp, __proj1, __proj2); + } + + template + requires mergeable, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr merge_result, borrowed_iterator_t<_Range2>, _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __merge::__merge_impl( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __result, + __comp, + __proj1, + __proj2); + } +}; + +} // namespace __merge + +inline namespace __cpo { +inline constexpr auto merge = __merge::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MERGE_H diff --git a/lib/libcxx/include/__algorithm/ranges_min.h b/lib/libcxx/include/__algorithm/ranges_min.h new file mode 100644 index 0000000..be15b45 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_min.h @@ -0,0 +1,94 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MIN_H +#define _LIBCPP___ALGORITHM_RANGES_MIN_H + +#include <__algorithm/ranges_min_element.h> +#include <__assert> +#include <__concepts/copyable.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__type_traits/is_trivially_copyable.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_PUSH_MACROS +# include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __min { +struct __fn { + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& + operator()(_LIBCPP_LIFETIMEBOUND const _Tp& __a, + _LIBCPP_LIFETIMEBOUND const _Tp& __b, + _Comp __comp = {}, + _Proj __proj = {}) const { + return std::invoke(__comp, std::invoke(__proj, __b), std::invoke(__proj, __a)) ? __b : __a; + } + + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp + operator()(initializer_list<_Tp> __il, _Comp __comp = {}, _Proj __proj = {}) const { + _LIBCPP_ASSERT_UNCATEGORIZED(__il.begin() != __il.end(), "initializer_list must contain at least one element"); + return *ranges::__min_element_impl(__il.begin(), __il.end(), __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + requires indirectly_copyable_storable, range_value_t<_Rp>*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr range_value_t<_Rp> + operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + auto __first = ranges::begin(__r); + auto __last = ranges::end(__r); + _LIBCPP_ASSERT_UNCATEGORIZED(__first != __last, "range must contain at least one element"); + if constexpr (forward_range<_Rp> && !__is_cheap_to_copy>) { + return *ranges::__min_element_impl(__first, __last, __comp, __proj); + } else { + range_value_t<_Rp> __result = *__first; + while (++__first != __last) { + if (std::invoke(__comp, std::invoke(__proj, *__first), std::invoke(__proj, __result))) + __result = *__first; + } + return __result; + } + } +}; +} // namespace __min + +inline namespace __cpo { +inline constexpr auto min = __min::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_STD_VER >= 20 && + +#endif // _LIBCPP___ALGORITHM_RANGES_MIN_H diff --git a/lib/libcxx/include/__algorithm/ranges_min_element.h b/lib/libcxx/include/__algorithm/ranges_min_element.h new file mode 100644 index 0000000..07826a0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_min_element.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MIN_ELEMENT_H +#define _LIBCPP___ALGORITHM_RANGES_MIN_ELEMENT_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +// TODO(ranges): `ranges::min_element` can now simply delegate to `std::__min_element`. +template +_LIBCPP_HIDE_FROM_ABI constexpr _Ip __min_element_impl(_Ip __first, _Sp __last, _Comp& __comp, _Proj& __proj) { + if (__first == __last) + return __first; + + _Ip __i = __first; + while (++__i != __last) + if (std::invoke(__comp, std::invoke(__proj, *__i), std::invoke(__proj, *__first))) + __first = __i; + return __first; +} + +namespace __min_element { +struct __fn { + template _Sp, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Ip + operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const { + return ranges::__min_element_impl(__first, __last, __comp, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> + operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return ranges::__min_element_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; +} // namespace __min_element + +inline namespace __cpo { +inline constexpr auto min_element = __min_element::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MIN_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/ranges_minmax.h b/lib/libcxx/include/__algorithm/ranges_minmax.h new file mode 100644 index 0000000..a5b5cf9 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_minmax.h @@ -0,0 +1,159 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MINMAX_H +#define _LIBCPP___ALGORITHM_RANGES_MINMAX_H + +#include <__algorithm/min_max_result.h> +#include <__algorithm/minmax_element.h> +#include <__assert> +#include <__concepts/copyable.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_PUSH_MACROS +# include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +template +using minmax_result = min_max_result<_T1>; + +namespace __minmax { +struct __fn { + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_result + operator()(_LIBCPP_LIFETIMEBOUND const _Type& __a, + _LIBCPP_LIFETIMEBOUND const _Type& __b, + _Comp __comp = {}, + _Proj __proj = {}) const { + if (std::invoke(__comp, std::invoke(__proj, __b), std::invoke(__proj, __a))) + return {__b, __a}; + return {__a, __b}; + } + + template > _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_result<_Type> + operator()(initializer_list<_Type> __il, _Comp __comp = {}, _Proj __proj = {}) const { + _LIBCPP_ASSERT_UNCATEGORIZED(__il.begin() != __il.end(), "initializer_list has to contain at least one element"); + auto __iters = std::__minmax_element_impl(__il.begin(), __il.end(), __comp, __proj); + return ranges::minmax_result<_Type>{*__iters.first, *__iters.second}; + } + + template , _Proj>> _Comp = ranges::less> + requires indirectly_copyable_storable, range_value_t<_Range>*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_result> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + auto __first = ranges::begin(__r); + auto __last = ranges::end(__r); + using _ValueT = range_value_t<_Range>; + + _LIBCPP_ASSERT_UNCATEGORIZED(__first != __last, "range has to contain at least one element"); + + if constexpr (forward_range<_Range>) { + // Special-case the one element case. Avoid repeatedly initializing objects from the result of an iterator + // dereference when doing so might not be idempotent. The `if constexpr` avoids the extra branch in cases where + // it's not needed. + if constexpr (!same_as>, _ValueT> || + is_rvalue_reference_v>) { + if (ranges::next(__first) == __last) { + // During initialization, members are allowed to refer to already initialized members + // (see http://eel.is/c++draft/dcl.init.aggr#6) + minmax_result<_ValueT> __result = {*__first, __result.min}; + return __result; + } + } + auto __result = std::__minmax_element_impl(__first, __last, __comp, __proj); + return {*__result.first, *__result.second}; + } else { + // input_iterators can't be copied, so the implementation for input_iterators has to store + // the values instead of a pointer to the correct values + auto __less = [&](auto&& __a, auto&& __b) -> bool { + return std::invoke(__comp, + std::invoke(__proj, std::forward(__a)), + std::invoke(__proj, std::forward(__b))); + }; + + // During initialization, members are allowed to refer to already initialized members + // (see http://eel.is/c++draft/dcl.init.aggr#6) + ranges::minmax_result<_ValueT> __result = {*__first, __result.min}; + if (__first == __last || ++__first == __last) + return __result; + + if (__less(*__first, __result.min)) + __result.min = *__first; + else + __result.max = *__first; + + while (++__first != __last) { + _ValueT __i = *__first; + if (++__first == __last) { + if (__less(__i, __result.min)) + __result.min = __i; + else if (!__less(__i, __result.max)) + __result.max = __i; + return __result; + } + + if (__less(*__first, __i)) { + if (__less(*__first, __result.min)) + __result.min = *__first; + if (!__less(__i, __result.max)) + __result.max = std::move(__i); + } else { + if (__less(__i, __result.min)) + __result.min = std::move(__i); + if (!__less(*__first, __result.max)) + __result.max = *__first; + } + } + return __result; + } + } +}; +} // namespace __minmax + +inline namespace __cpo { +inline constexpr auto minmax = __minmax::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MINMAX_H diff --git a/lib/libcxx/include/__algorithm/ranges_minmax_element.h b/lib/libcxx/include/__algorithm/ranges_minmax_element.h new file mode 100644 index 0000000..a52319f --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_minmax_element.h @@ -0,0 +1,73 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MINMAX_ELEMENT_H +#define _LIBCPP___ALGORITHM_RANGES_MINMAX_ELEMENT_H + +#include <__algorithm/min_max_result.h> +#include <__algorithm/minmax_element.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using minmax_element_result = min_max_result<_T1>; + +namespace __minmax_element { +struct __fn { + template _Sp, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_element_result<_Ip> + operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__minmax_element_impl(std::move(__first), std::move(__last), __comp, __proj); + return {__ret.first, __ret.second}; + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_element_result> + operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__minmax_element_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + return {__ret.first, __ret.second}; + } +}; +} // namespace __minmax_element + +inline namespace __cpo { +inline constexpr auto minmax_element = __minmax_element::__fn{}; +} // namespace __cpo + +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MINMAX_H diff --git a/lib/libcxx/include/__algorithm/ranges_mismatch.h b/lib/libcxx/include/__algorithm/ranges_mismatch.h new file mode 100644 index 0000000..db9bfc8 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_mismatch.h @@ -0,0 +1,89 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MISMATCH_H +#define _LIBCPP___ALGORITHM_RANGES_MISMATCH_H + +#include <__algorithm/in_in_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template +using mismatch_result = in_in_result<_I1, _I2>; + +namespace __mismatch { +struct __fn { + template + static _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2> + __go(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred& __pred, _Proj1& __proj1, _Proj2& __proj2) { + while (__first1 != __last1 && __first2 != __last2) { + if (!std::invoke(__pred, std::invoke(__proj1, *__first1), std::invoke(__proj2, *__first2))) + break; + ++__first1; + ++__first2; + } + return {std::move(__first1), std::move(__first2)}; + } + + template _S1, + input_iterator _I2, + sentinel_for<_I2> _S2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_I1, _I2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2> operator()( + _I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) + const { + return __go(std::move(__first1), __last1, std::move(__first2), __last2, __pred, __proj1, __proj2); + } + + template + requires indirectly_comparable, iterator_t<_R2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result, + borrowed_iterator_t<_R2>> + operator()(_R1&& __r1, _R2&& __r2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + return __go( + ranges::begin(__r1), ranges::end(__r1), ranges::begin(__r2), ranges::end(__r2), __pred, __proj1, __proj2); + } +}; +} // namespace __mismatch + +inline namespace __cpo { +constexpr inline auto mismatch = __mismatch::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_RANGES_MISMATCH_H diff --git a/lib/libcxx/include/__algorithm/ranges_move.h b/lib/libcxx/include/__algorithm/ranges_move.h new file mode 100644 index 0000000..8bd2409 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_move.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MOVE_H +#define _LIBCPP___ALGORITHM_RANGES_MOVE_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/move.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using move_result = in_out_result<_InIter, _OutIter>; + +namespace __move { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static move_result<_InIter, _OutIter> + __move_impl(_InIter __first, _Sent __last, _OutIter __result) { + auto __ret = std::__move<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template _Sent, weakly_incrementable _OutIter> + requires indirectly_movable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr move_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + return __move_impl(std::move(__first), std::move(__last), std::move(__result)); + } + + template + requires indirectly_movable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr move_result, _OutIter> + operator()(_Range&& __range, _OutIter __result) const { + return __move_impl(ranges::begin(__range), ranges::end(__range), std::move(__result)); + } +}; +} // namespace __move + +inline namespace __cpo { +inline constexpr auto move = __move::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MOVE_H diff --git a/lib/libcxx/include/__algorithm/ranges_move_backward.h b/lib/libcxx/include/__algorithm/ranges_move_backward.h new file mode 100644 index 0000000..ee390a4 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_move_backward.h @@ -0,0 +1,71 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_MOVE_BACKWARD_H +#define _LIBCPP___ALGORITHM_RANGES_MOVE_BACKWARD_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/move_backward.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iter_move.h> +#include <__iterator/next.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using move_backward_result = in_out_result<_InIter, _OutIter>; + +namespace __move_backward { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static move_backward_result<_InIter, _OutIter> + __move_backward_impl(_InIter __first, _Sent __last, _OutIter __result) { + auto __ret = std::__move_backward<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template _Sent, bidirectional_iterator _OutIter> + requires indirectly_movable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr move_backward_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + return __move_backward_impl(std::move(__first), std::move(__last), std::move(__result)); + } + + template + requires indirectly_movable, _Iter> + _LIBCPP_HIDE_FROM_ABI constexpr move_backward_result, _Iter> + operator()(_Range&& __range, _Iter __result) const { + return __move_backward_impl(ranges::begin(__range), ranges::end(__range), std::move(__result)); + } +}; +} // namespace __move_backward + +inline namespace __cpo { +inline constexpr auto move_backward = __move_backward::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_MOVE_BACKWARD_H diff --git a/lib/libcxx/include/__algorithm/ranges_next_permutation.h b/lib/libcxx/include/__algorithm/ranges_next_permutation.h new file mode 100644 index 0000000..9ebab3e --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_next_permutation.h @@ -0,0 +1,73 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H +#define _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H + +#include <__algorithm/in_found_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/next_permutation.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using next_permutation_result = in_found_result<_InIter>; + +namespace __next_permutation { + +struct __fn { + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr next_permutation_result<_Iter> + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + auto __result = std::__next_permutation<_RangeAlgPolicy>( + std::move(__first), std::move(__last), std::__make_projected(__comp, __proj)); + return {std::move(__result.first), std::move(__result.second)}; + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr next_permutation_result> + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + auto __result = std::__next_permutation<_RangeAlgPolicy>( + ranges::begin(__range), ranges::end(__range), std::__make_projected(__comp, __proj)); + return {std::move(__result.first), std::move(__result.second)}; + } +}; + +} // namespace __next_permutation + +inline namespace __cpo { +constexpr inline auto next_permutation = __next_permutation::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/ranges_none_of.h b/lib/libcxx/include/__algorithm/ranges_none_of.h new file mode 100644 index 0000000..b0d3638 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_none_of.h @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_NONE_OF_H +#define _LIBCPP___ALGORITHM_RANGES_NONE_OF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __none_of { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static bool + __none_of_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + return false; + } + return true; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Iter __first, _Sent __last, _Pred __pred = {}, _Proj __proj = {}) const { + return __none_of_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __none_of_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __none_of + +inline namespace __cpo { +inline constexpr auto none_of = __none_of::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_NONE_OF_H diff --git a/lib/libcxx/include/__algorithm/ranges_nth_element.h b/lib/libcxx/include/__algorithm/ranges_nth_element.h new file mode 100644 index 0000000..7abdbd0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_nth_element.h @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_NTH_ELEMENT_H +#define _LIBCPP___ALGORITHM_RANGES_NTH_ELEMENT_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/nth_element.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __nth_element { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __nth_element_fn_impl(_Iter __first, _Iter __nth, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__nth_element_impl<_RangeAlgPolicy>(std::move(__first), std::move(__nth), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Iter __nth, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __nth_element_fn_impl(std::move(__first), std::move(__nth), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, iterator_t<_Range> __nth, _Comp __comp = {}, _Proj __proj = {}) const { + return __nth_element_fn_impl(ranges::begin(__r), std::move(__nth), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __nth_element + +inline namespace __cpo { +inline constexpr auto nth_element = __nth_element::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_NTH_ELEMENT_H diff --git a/lib/libcxx/include/__algorithm/ranges_partial_sort.h b/lib/libcxx/include/__algorithm/ranges_partial_sort.h new file mode 100644 index 0000000..9ec8882 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_partial_sort.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_H +#define _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/partial_sort.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __partial_sort { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __partial_sort_fn_impl(_Iter __first, _Iter __middle, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto&& __projected_comp = std::__make_projected(__comp, __proj); + return std::__partial_sort<_RangeAlgPolicy>(std::move(__first), std::move(__middle), __last, __projected_comp); + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __partial_sort_fn_impl(std::move(__first), std::move(__middle), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, iterator_t<_Range> __middle, _Comp __comp = {}, _Proj __proj = {}) const { + return __partial_sort_fn_impl(ranges::begin(__r), std::move(__middle), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __partial_sort + +inline namespace __cpo { +inline constexpr auto partial_sort = __partial_sort::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_H diff --git a/lib/libcxx/include/__algorithm/ranges_partial_sort_copy.h b/lib/libcxx/include/__algorithm/ranges_partial_sort_copy.h new file mode 100644 index 0000000..eba7d9a --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_partial_sort_copy.h @@ -0,0 +1,109 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/partial_sort_copy.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using partial_sort_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __partial_sort_copy { + +struct __fn { + template _Sent1, + random_access_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Comp = ranges::less, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_copyable<_Iter1, _Iter2> && sortable<_Iter2, _Comp, _Proj2> && + indirect_strict_weak_order<_Comp, projected<_Iter1, _Proj1>, projected<_Iter2, _Proj2>> + _LIBCPP_HIDE_FROM_ABI constexpr partial_sort_copy_result<_Iter1, _Iter2> operator()( + _Iter1 __first, + _Sent1 __last, + _Iter2 __result_first, + _Sent2 __result_last, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __result = std::__partial_sort_copy<_RangeAlgPolicy>( + std::move(__first), + std::move(__last), + std::move(__result_first), + std::move(__result_last), + __comp, + __proj1, + __proj2); + return {std::move(__result.first), std::move(__result.second)}; + } + + template + requires indirectly_copyable, iterator_t<_Range2>> && + sortable, _Comp, _Proj2> && + indirect_strict_weak_order<_Comp, + projected, _Proj1>, + projected, _Proj2>> + _LIBCPP_HIDE_FROM_ABI constexpr partial_sort_copy_result, borrowed_iterator_t<_Range2>> + operator()( + _Range1&& __range, _Range2&& __result_range, _Comp __comp = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + auto __result = std::__partial_sort_copy<_RangeAlgPolicy>( + ranges::begin(__range), + ranges::end(__range), + ranges::begin(__result_range), + ranges::end(__result_range), + __comp, + __proj1, + __proj2); + return {std::move(__result.first), std::move(__result.second)}; + } +}; + +} // namespace __partial_sort_copy + +inline namespace __cpo { +inline constexpr auto partial_sort_copy = __partial_sort_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PARTIAL_SORT_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_partition.h b/lib/libcxx/include/__algorithm/ranges_partition.h new file mode 100644 index 0000000..89d192b --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_partition.h @@ -0,0 +1,83 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PARTITION_H +#define _LIBCPP___ALGORITHM_RANGES_PARTITION_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/partition.h> +#include <__algorithm/ranges_iterator_concept.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/permutable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __partition { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr subrange<__remove_cvref_t<_Iter>> + __partition_fn_impl(_Iter&& __first, _Sent&& __last, _Pred&& __pred, _Proj&& __proj) { + auto&& __projected_pred = std::__make_projected(__pred, __proj); + auto __result = std::__partition<_RangeAlgPolicy>( + std::move(__first), std::move(__last), __projected_pred, __iterator_concept<_Iter>()); + + return {std::move(__result.first), std::move(__result.second)}; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return __partition_fn_impl(__first, __last, __pred, __proj); + } + + template , _Proj>> _Pred> + requires permutable> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __partition_fn_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; + +} // namespace __partition + +inline namespace __cpo { +inline constexpr auto partition = __partition::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PARTITION_H diff --git a/lib/libcxx/include/__algorithm/ranges_partition_copy.h b/lib/libcxx/include/__algorithm/ranges_partition_copy.h new file mode 100644 index 0000000..6a16b02 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_partition_copy.h @@ -0,0 +1,105 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PARTITION_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_PARTITION_COPY_H + +#include <__algorithm/in_out_out_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using partition_copy_result = in_out_out_result<_InIter, _OutIter1, _OutIter2>; + +namespace __partition_copy { + +struct __fn { + // TODO(ranges): delegate to the classic algorithm. + template + _LIBCPP_HIDE_FROM_ABI constexpr static partition_copy_result<__remove_cvref_t<_InIter>, + __remove_cvref_t<_OutIter1>, + __remove_cvref_t<_OutIter2> > + __partition_copy_fn_impl( + _InIter&& __first, + _Sent&& __last, + _OutIter1&& __out_true, + _OutIter2&& __out_false, + _Pred& __pred, + _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) { + *__out_true = *__first; + ++__out_true; + + } else { + *__out_false = *__first; + ++__out_false; + } + } + + return {std::move(__first), std::move(__out_true), std::move(__out_false)}; + } + + template _Sent, + weakly_incrementable _OutIter1, + weakly_incrementable _OutIter2, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires indirectly_copyable<_InIter, _OutIter1> && indirectly_copyable<_InIter, _OutIter2> + _LIBCPP_HIDE_FROM_ABI constexpr partition_copy_result<_InIter, _OutIter1, _OutIter2> operator()( + _InIter __first, _Sent __last, _OutIter1 __out_true, _OutIter2 __out_false, _Pred __pred, _Proj __proj = {}) + const { + return __partition_copy_fn_impl( + std::move(__first), std::move(__last), std::move(__out_true), std::move(__out_false), __pred, __proj); + } + + template , _Proj>> _Pred> + requires indirectly_copyable, _OutIter1> && indirectly_copyable, _OutIter2> + _LIBCPP_HIDE_FROM_ABI constexpr partition_copy_result, _OutIter1, _OutIter2> + operator()(_Range&& __range, _OutIter1 __out_true, _OutIter2 __out_false, _Pred __pred, _Proj __proj = {}) const { + return __partition_copy_fn_impl( + ranges::begin(__range), ranges::end(__range), std::move(__out_true), std::move(__out_false), __pred, __proj); + } +}; + +} // namespace __partition_copy + +inline namespace __cpo { +inline constexpr auto partition_copy = __partition_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PARTITION_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_partition_point.h b/lib/libcxx/include/__algorithm/ranges_partition_point.h new file mode 100644 index 0000000..6fc20e7 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_partition_point.h @@ -0,0 +1,88 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PARTITION_POINT_H +#define _LIBCPP___ALGORITHM_RANGES_PARTITION_POINT_H + +#include <__algorithm/half_positive.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __partition_point { + +struct __fn { + // TODO(ranges): delegate to the classic algorithm. + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __partition_point_fn_impl(_Iter&& __first, _Sent&& __last, _Pred& __pred, _Proj& __proj) { + auto __len = ranges::distance(__first, __last); + + while (__len != 0) { + auto __half_len = std::__half_positive(__len); + auto __mid = ranges::next(__first, __half_len); + + if (std::invoke(__pred, std::invoke(__proj, *__mid))) { + __first = ++__mid; + __len -= __half_len + 1; + + } else { + __len = __half_len; + } + } + + return __first; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return __partition_point_fn_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __partition_point_fn_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; + +} // namespace __partition_point + +inline namespace __cpo { +inline constexpr auto partition_point = __partition_point::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PARTITION_POINT_H diff --git a/lib/libcxx/include/__algorithm/ranges_pop_heap.h b/lib/libcxx/include/__algorithm/ranges_pop_heap.h new file mode 100644 index 0000000..364cfe9 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_pop_heap.h @@ -0,0 +1,81 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H +#define _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/pop_heap.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __pop_heap { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __pop_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + auto __len = __last_iter - __first; + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__pop_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp, __len); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __pop_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __pop_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __pop_heap + +inline namespace __cpo { +inline constexpr auto pop_heap = __pop_heap::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_prev_permutation.h b/lib/libcxx/include/__algorithm/ranges_prev_permutation.h new file mode 100644 index 0000000..ae7a68c --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_prev_permutation.h @@ -0,0 +1,73 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PREV_PERMUTATION_H +#define _LIBCPP___ALGORITHM_RANGES_PREV_PERMUTATION_H + +#include <__algorithm/in_found_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/prev_permutation.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using prev_permutation_result = in_found_result<_InIter>; + +namespace __prev_permutation { + +struct __fn { + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr prev_permutation_result<_Iter> + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + auto __result = std::__prev_permutation<_RangeAlgPolicy>( + std::move(__first), std::move(__last), std::__make_projected(__comp, __proj)); + return {std::move(__result.first), std::move(__result.second)}; + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr prev_permutation_result> + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + auto __result = std::__prev_permutation<_RangeAlgPolicy>( + ranges::begin(__range), ranges::end(__range), std::__make_projected(__comp, __proj)); + return {std::move(__result.first), std::move(__result.second)}; + } +}; + +} // namespace __prev_permutation + +inline namespace __cpo { +constexpr inline auto prev_permutation = __prev_permutation::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PREV_PERMUTATION_H diff --git a/lib/libcxx/include/__algorithm/ranges_push_heap.h b/lib/libcxx/include/__algorithm/ranges_push_heap.h new file mode 100644 index 0000000..1ed9c95 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_push_heap.h @@ -0,0 +1,80 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_PUSH_HEAP_H +#define _LIBCPP___ALGORITHM_RANGES_PUSH_HEAP_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/push_heap.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __push_heap { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __push_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__push_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __push_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __push_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __push_heap + +inline namespace __cpo { +inline constexpr auto push_heap = __push_heap::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_PUSH_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_remove.h b/lib/libcxx/include/__algorithm/ranges_remove.h new file mode 100644 index 0000000..bf0928d --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_remove.h @@ -0,0 +1,63 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_H +#define _LIBCPP___ALGORITHM_RANGES_REMOVE_H +#include <__config> + +#include <__algorithm/ranges_remove_if.h> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/permutable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __remove { +struct __fn { + template _Sent, class _Type, class _Proj = identity> + requires indirect_binary_predicate, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __other) { return __value == __other; }; + return ranges::__remove_if_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template + requires permutable> && + indirect_binary_predicate, _Proj>, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __other) { return __value == __other; }; + return ranges::__remove_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __remove + +inline namespace __cpo { +inline constexpr auto remove = __remove::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_H diff --git a/lib/libcxx/include/__algorithm/ranges_remove_copy.h b/lib/libcxx/include/__algorithm/ranges_remove_copy.h new file mode 100644 index 0000000..457d593 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_remove_copy.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/ranges_remove_copy_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using remove_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __remove_copy { + +struct __fn { + template _Sent, + weakly_incrementable _OutIter, + class _Type, + class _Proj = identity> + requires indirectly_copyable<_InIter, _OutIter> && + indirect_binary_predicate, const _Type*> + _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __val) { return __value == __val; }; + return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj); + } + + template + requires indirectly_copyable, _OutIter> && + indirect_binary_predicate, _Proj>, const _Type*> + _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result, _OutIter> + operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __val) { return __value == __val; }; + return ranges::__remove_copy_if_impl( + ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj); + } +}; + +} // namespace __remove_copy + +inline namespace __cpo { +inline constexpr auto remove_copy = __remove_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_remove_copy_if.h b/lib/libcxx/include/__algorithm/ranges_remove_copy_if.h new file mode 100644 index 0000000..c07b481 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_remove_copy_if.h @@ -0,0 +1,90 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_IF_H +#define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_IF_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/remove_copy_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using remove_copy_if_result = in_out_result<_InIter, _OutIter>; + +template +_LIBCPP_HIDE_FROM_ABI constexpr in_out_result<_InIter, _OutIter> +__remove_copy_if_impl(_InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (!std::invoke(__pred, std::invoke(__proj, *__first))) { + *__result = *__first; + ++__result; + } + } + return {std::move(__first), std::move(__result)}; +} + +namespace __remove_copy_if { + +struct __fn { + template _Sent, + weakly_incrementable _OutIter, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_if_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result, _Pred __pred, _Proj __proj = {}) const { + return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj); + } + + template , _Proj>> _Pred> + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_if_result, _OutIter> + operator()(_Range&& __range, _OutIter __result, _Pred __pred, _Proj __proj = {}) const { + return ranges::__remove_copy_if_impl( + ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj); + } +}; + +} // namespace __remove_copy_if + +inline namespace __cpo { +inline constexpr auto remove_copy_if = __remove_copy_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_remove_if.h b/lib/libcxx/include/__algorithm/ranges_remove_if.h new file mode 100644 index 0000000..4b7aa2d --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_remove_if.h @@ -0,0 +1,84 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_IF_H +#define _LIBCPP___ALGORITHM_RANGES_REMOVE_IF_H +#include <__config> + +#include <__algorithm/ranges_find_if.h> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iter_move.h> +#include <__iterator/permutable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +_LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> +__remove_if_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { + auto __new_end = ranges::__find_if_impl(__first, __last, __pred, __proj); + if (__new_end == __last) + return {__new_end, __new_end}; + + _Iter __i = __new_end; + while (++__i != __last) { + if (!std::invoke(__pred, std::invoke(__proj, *__i))) { + *__new_end = ranges::iter_move(__i); + ++__new_end; + } + } + return {__new_end, __i}; +} + +namespace __remove_if { +struct __fn { + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return ranges::__remove_if_impl(std::move(__first), std::move(__last), __pred, __proj); + } + + template , _Proj>> _Pred> + requires permutable> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return ranges::__remove_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; +} // namespace __remove_if + +inline namespace __cpo { +inline constexpr auto remove_if = __remove_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_replace.h b/lib/libcxx/include/__algorithm/ranges_replace.h new file mode 100644 index 0000000..714fd5c --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_replace.h @@ -0,0 +1,63 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REPLACE_H +#define _LIBCPP___ALGORITHM_RANGES_REPLACE_H + +#include <__algorithm/ranges_replace_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __replace { +struct __fn { + template _Sent, class _Type1, class _Type2, class _Proj = identity> + requires indirectly_writable<_Iter, const _Type2&> && + indirect_binary_predicate, const _Type1*> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()( + _Iter __first, _Sent __last, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const { + auto __pred = [&](const auto& __val) { return __val == __old_value; }; + return ranges::__replace_if_impl(std::move(__first), std::move(__last), __pred, __new_value, __proj); + } + + template + requires indirectly_writable, const _Type2&> && + indirect_binary_predicate, _Proj>, const _Type1*> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const { + auto __pred = [&](auto&& __val) { return __val == __old_value; }; + return ranges::__replace_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __new_value, __proj); + } +}; +} // namespace __replace + +inline namespace __cpo { +inline constexpr auto replace = __replace::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_H diff --git a/lib/libcxx/include/__algorithm/ranges_replace_copy.h b/lib/libcxx/include/__algorithm/ranges_replace_copy.h new file mode 100644 index 0000000..124ff8f --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_replace_copy.h @@ -0,0 +1,88 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/ranges_replace_copy_if.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using replace_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __replace_copy { + +struct __fn { + template _Sent, + class _OldType, + class _NewType, + output_iterator _OutIter, + class _Proj = identity> + requires indirectly_copyable<_InIter, _OutIter> && + indirect_binary_predicate, const _OldType*> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_result<_InIter, _OutIter> + operator()(_InIter __first, + _Sent __last, + _OutIter __result, + const _OldType& __old_value, + const _NewType& __new_value, + _Proj __proj = {}) const { + auto __pred = [&](const auto& __value) { return __value == __old_value; }; + return ranges::__replace_copy_if_impl( + std::move(__first), std::move(__last), std::move(__result), __pred, __new_value, __proj); + } + + template _OutIter, + class _Proj = identity> + requires indirectly_copyable, _OutIter> && + indirect_binary_predicate, _Proj>, const _OldType*> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_result, _OutIter> operator()( + _Range&& __range, _OutIter __result, const _OldType& __old_value, const _NewType& __new_value, _Proj __proj = {}) + const { + auto __pred = [&](const auto& __value) { return __value == __old_value; }; + return ranges::__replace_copy_if_impl( + ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __new_value, __proj); + } +}; + +} // namespace __replace_copy + +inline namespace __cpo { +inline constexpr auto replace_copy = __replace_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_replace_copy_if.h b/lib/libcxx/include/__algorithm/ranges_replace_copy_if.h new file mode 100644 index 0000000..10ed1fd --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_replace_copy_if.h @@ -0,0 +1,93 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H +#define _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H + +#include <__algorithm/in_out_result.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using replace_copy_if_result = in_out_result<_InIter, _OutIter>; + +template +_LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> __replace_copy_if_impl( + _InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, const _Type& __new_value, _Proj& __proj) { + while (__first != __last) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + *__result = __new_value; + else + *__result = *__first; + + ++__first; + ++__result; + } + + return {std::move(__first), std::move(__result)}; +} + +namespace __replace_copy_if { + +struct __fn { + template _Sent, + class _Type, + output_iterator _OutIter, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> operator()( + _InIter __first, _Sent __last, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) + const { + return ranges::__replace_copy_if_impl( + std::move(__first), std::move(__last), std::move(__result), __pred, __new_value, __proj); + } + + template _OutIter, + class _Proj = identity, + indirect_unary_predicate, _Proj>> _Pred> + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result, _OutIter> + operator()(_Range&& __range, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { + return ranges::__replace_copy_if_impl( + ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __new_value, __proj); + } +}; + +} // namespace __replace_copy_if + +inline namespace __cpo { +inline constexpr auto replace_copy_if = __replace_copy_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_replace_if.h b/lib/libcxx/include/__algorithm/ranges_replace_if.h new file mode 100644 index 0000000..519fa32 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_replace_if.h @@ -0,0 +1,76 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REPLACE_IF_H +#define _LIBCPP___ALGORITHM_RANGES_REPLACE_IF_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +_LIBCPP_HIDE_FROM_ABI constexpr _Iter +__replace_if_impl(_Iter __first, _Sent __last, _Pred& __pred, const _Type& __new_value, _Proj& __proj) { + for (; __first != __last; ++__first) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + *__first = __new_value; + } + return __first; +} + +namespace __replace_if { +struct __fn { + template _Sent, + class _Type, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires indirectly_writable<_Iter, const _Type&> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { + return ranges::__replace_if_impl(std::move(__first), std::move(__last), __pred, __new_value, __proj); + } + + template , _Proj>> _Pred> + requires indirectly_writable, const _Type&> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __range, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { + return ranges::__replace_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __new_value, __proj); + } +}; +} // namespace __replace_if + +inline namespace __cpo { +inline constexpr auto replace_if = __replace_if::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_IF_H diff --git a/lib/libcxx/include/__algorithm/ranges_reverse.h b/lib/libcxx/include/__algorithm/ranges_reverse.h new file mode 100644 index 0000000..9ec8659 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_reverse.h @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REVERSE_H +#define _LIBCPP___ALGORITHM_RANGES_REVERSE_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iter_swap.h> +#include <__iterator/next.h> +#include <__iterator/permutable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __reverse { +struct __fn { + template _Sent> + requires permutable<_Iter> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(_Iter __first, _Sent __last) const { + if constexpr (random_access_iterator<_Iter>) { + if (__first == __last) + return __first; + + auto __end = ranges::next(__first, __last); + auto __ret = __end; + + while (__first < --__end) { + ranges::iter_swap(__first, __end); + ++__first; + } + return __ret; + } else { + auto __end = ranges::next(__first, __last); + auto __ret = __end; + + while (__first != __end) { + if (__first == --__end) + break; + + ranges::iter_swap(__first, __end); + ++__first; + } + return __ret; + } + } + + template + requires permutable> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator()(_Range&& __range) const { + return (*this)(ranges::begin(__range), ranges::end(__range)); + } +}; +} // namespace __reverse + +inline namespace __cpo { +inline constexpr auto reverse = __reverse::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REVERSE_H diff --git a/lib/libcxx/include/__algorithm/ranges_reverse_copy.h b/lib/libcxx/include/__algorithm/ranges_reverse_copy.h new file mode 100644 index 0000000..35b9edb --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_reverse_copy.h @@ -0,0 +1,65 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/ranges_copy.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/next.h> +#include <__iterator/reverse_iterator.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__ranges/subrange.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using reverse_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __reverse_copy { +struct __fn { + template _Sent, weakly_incrementable _OutIter> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result) const { + return (*this)(subrange(std::move(__first), std::move(__last)), std::move(__result)); + } + + template + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result, _OutIter> + operator()(_Range&& __range, _OutIter __result) const { + auto __ret = ranges::copy(std::__reverse_range(__range), std::move(__result)); + return {ranges::next(ranges::begin(__range), ranges::end(__range)), std::move(__ret.out)}; + } +}; +} // namespace __reverse_copy + +inline namespace __cpo { +inline constexpr auto reverse_copy = __reverse_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_rotate.h b/lib/libcxx/include/__algorithm/ranges_rotate.h new file mode 100644 index 0000000..ebed9bb --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_rotate.h @@ -0,0 +1,66 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ROTATE_H +#define _LIBCPP___ALGORITHM_RANGES_ROTATE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/ranges_iterator_concept.h> +#include <__algorithm/rotate.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/permutable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __rotate { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static subrange<_Iter> __rotate_fn_impl(_Iter __first, _Iter __middle, _Sent __last) { + auto __ret = std::__rotate<_RangeAlgPolicy>(std::move(__first), std::move(__middle), std::move(__last)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template _Sent> + _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> operator()(_Iter __first, _Iter __middle, _Sent __last) const { + return __rotate_fn_impl(std::move(__first), std::move(__middle), std::move(__last)); + } + + template + requires permutable> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, iterator_t<_Range> __middle) const { + return __rotate_fn_impl(ranges::begin(__range), std::move(__middle), ranges::end(__range)); + } +}; + +} // namespace __rotate + +inline namespace __cpo { +inline constexpr auto rotate = __rotate::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ROTATE_H diff --git a/lib/libcxx/include/__algorithm/ranges_rotate_copy.h b/lib/libcxx/include/__algorithm/ranges_rotate_copy.h new file mode 100644 index 0000000..3016727 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_rotate_copy.h @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/ranges_copy.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/reverse_iterator.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using rotate_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __rotate_copy { +struct __fn { + template _Sent, weakly_incrementable _OutIter> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr rotate_copy_result<_InIter, _OutIter> + operator()(_InIter __first, _InIter __middle, _Sent __last, _OutIter __result) const { + auto __res1 = ranges::copy(__middle, __last, std::move(__result)); + auto __res2 = ranges::copy(__first, __middle, std::move(__res1.out)); + return {std::move(__res1.in), std::move(__res2.out)}; + } + + template + requires indirectly_copyable, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr rotate_copy_result, _OutIter> + operator()(_Range&& __range, iterator_t<_Range> __middle, _OutIter __result) const { + return (*this)(ranges::begin(__range), std::move(__middle), ranges::end(__range), std::move(__result)); + } +}; +} // namespace __rotate_copy + +inline namespace __cpo { +inline constexpr auto rotate_copy = __rotate_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_sample.h b/lib/libcxx/include/__algorithm/ranges_sample.h new file mode 100644 index 0000000..d347d82 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_sample.h @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SAMPLE_H +#define _LIBCPP___ALGORITHM_RANGES_SAMPLE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/sample.h> +#include <__algorithm/uniform_random_bit_generator_adaptor.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__random/uniform_random_bit_generator.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__type_traits/remove_reference.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __sample { + +struct __fn { + template _Sent, weakly_incrementable _OutIter, class _Gen> + requires(forward_iterator<_Iter> || random_access_iterator<_OutIter>) && indirectly_copyable<_Iter, _OutIter> && + uniform_random_bit_generator> + _LIBCPP_HIDE_FROM_ABI _OutIter + operator()(_Iter __first, _Sent __last, _OutIter __out_first, iter_difference_t<_Iter> __n, _Gen&& __gen) const { + _ClassicGenAdaptor<_Gen> __adapted_gen(__gen); + return std::__sample<_RangeAlgPolicy>( + std::move(__first), std::move(__last), std::move(__out_first), __n, __adapted_gen); + } + + template + requires(forward_range<_Range> || random_access_iterator<_OutIter>) && + indirectly_copyable, _OutIter> && uniform_random_bit_generator> + _LIBCPP_HIDE_FROM_ABI _OutIter + operator()(_Range&& __range, _OutIter __out_first, range_difference_t<_Range> __n, _Gen&& __gen) const { + return (*this)( + ranges::begin(__range), ranges::end(__range), std::move(__out_first), __n, std::forward<_Gen>(__gen)); + } +}; + +} // namespace __sample + +inline namespace __cpo { +inline constexpr auto sample = __sample::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SAMPLE_H diff --git a/lib/libcxx/include/__algorithm/ranges_search.h b/lib/libcxx/include/__algorithm/ranges_search.h new file mode 100644 index 0000000..ca2326e --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_search.h @@ -0,0 +1,134 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SEARCH_H +#define _LIBCPP___ALGORITHM_RANGES_SEARCH_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/search.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/indirectly_comparable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/size.h> +#include <__ranges/subrange.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __search { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr subrange<_Iter1> __ranges_search_impl( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2) { + if constexpr (sized_sentinel_for<_Sent2, _Iter2>) { + auto __size2 = ranges::distance(__first2, __last2); + if (__size2 == 0) + return {__first1, __first1}; + + if constexpr (sized_sentinel_for<_Sent1, _Iter1>) { + auto __size1 = ranges::distance(__first1, __last1); + if (__size1 < __size2) { + ranges::advance(__first1, __last1); + return {__first1, __first1}; + } + + if constexpr (random_access_iterator<_Iter1> && random_access_iterator<_Iter2>) { + auto __ret = std::__search_random_access_impl<_RangeAlgPolicy>( + __first1, __last1, __first2, __last2, __pred, __proj1, __proj2, __size1, __size2); + return {__ret.first, __ret.second}; + } + } + } + + auto __ret = + std::__search_forward_impl<_RangeAlgPolicy>(__first1, __last1, __first2, __last2, __pred, __proj1, __proj2); + return {__ret.first, __ret.second}; + } + + template _Sent1, + forward_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter1> operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __ranges_search_impl(__first1, __last1, __first2, __last2, __pred, __proj1, __proj2); + } + + template + requires indirectly_comparable, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range1> operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + auto __first1 = ranges::begin(__range1); + if constexpr (sized_range<_Range2>) { + auto __size2 = ranges::size(__range2); + if (__size2 == 0) + return {__first1, __first1}; + if constexpr (sized_range<_Range1>) { + auto __size1 = ranges::size(__range1); + if (__size1 < __size2) { + ranges::advance(__first1, ranges::end(__range1)); + return {__first1, __first1}; + } + } + } + + return __ranges_search_impl( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __pred, + __proj1, + __proj2); + } +}; +} // namespace __search + +inline namespace __cpo { +inline constexpr auto search = __search::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SEARCH_H diff --git a/lib/libcxx/include/__algorithm/ranges_search_n.h b/lib/libcxx/include/__algorithm/ranges_search_n.h new file mode 100644 index 0000000..4e53f30 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_search_n.h @@ -0,0 +1,111 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SEARCH_N_H +#define _LIBCPP___ALGORITHM_RANGES_SEARCH_N_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/search_n.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/indirectly_comparable.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/size.h> +#include <__ranges/subrange.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __search_n { +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static constexpr subrange<_Iter1> __ranges_search_n_impl( + _Iter1 __first, _Sent1 __last, _SizeT __count, const _Type& __value, _Pred& __pred, _Proj& __proj) { + if (__count == 0) + return {__first, __first}; + + if constexpr (sized_sentinel_for<_Sent1, _Iter1>) { + auto __size = ranges::distance(__first, __last); + if (__size < __count) { + ranges::advance(__first, __last); + return {__first, __first}; + } + + if constexpr (random_access_iterator<_Iter1>) { + auto __ret = std::__search_n_random_access_impl<_RangeAlgPolicy>( + __first, __last, __count, __value, __pred, __proj, __size); + return {std::move(__ret.first), std::move(__ret.second)}; + } + } + + auto __ret = std::__search_n_forward_impl<_RangeAlgPolicy>(__first, __last, __count, __value, __pred, __proj); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template _Sent, + class _Type, + class _Pred = ranges::equal_to, + class _Proj = identity> + requires indirectly_comparable<_Iter, const _Type*, _Pred, _Proj> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, + _Sent __last, + iter_difference_t<_Iter> __count, + const _Type& __value, + _Pred __pred = {}, + _Proj __proj = _Proj{}) const { + return __ranges_search_n_impl(__first, __last, __count, __value, __pred, __proj); + } + + template + requires indirectly_comparable, const _Type*, _Pred, _Proj> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> operator()( + _Range&& __range, range_difference_t<_Range> __count, const _Type& __value, _Pred __pred = {}, _Proj __proj = {}) + const { + auto __first = ranges::begin(__range); + if (__count <= 0) + return {__first, __first}; + if constexpr (sized_range<_Range>) { + auto __size1 = ranges::size(__range); + if (__size1 < static_cast>(__count)) { + ranges::advance(__first, ranges::end(__range)); + return {__first, __first}; + } + } + + return __ranges_search_n_impl(ranges::begin(__range), ranges::end(__range), __count, __value, __pred, __proj); + } +}; +} // namespace __search_n + +inline namespace __cpo { +inline constexpr auto search_n = __search_n::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SEARCH_N_H diff --git a/lib/libcxx/include/__algorithm/ranges_set_difference.h b/lib/libcxx/include/__algorithm/ranges_set_difference.h new file mode 100644 index 0000000..a9453ed --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_set_difference.h @@ -0,0 +1,103 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H +#define _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/set_difference.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/mergeable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__type_traits/decay.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using set_difference_result = in_out_result<_InIter, _OutIter>; + +namespace __set_difference { + +struct __fn { + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + class _Comp = less, + class _Proj1 = identity, + class _Proj2 = identity> + requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<_InIter1, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_difference<_RangeAlgPolicy>( + __first1, __last1, __first2, __last2, __result, ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template + requires mergeable, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result, _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_difference<_RangeAlgPolicy>( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __result, + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; + +} // namespace __set_difference + +inline namespace __cpo { +inline constexpr auto set_difference = __set_difference::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 +#endif // _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H diff --git a/lib/libcxx/include/__algorithm/ranges_set_intersection.h b/lib/libcxx/include/__algorithm/ranges_set_intersection.h new file mode 100644 index 0000000..4cdcbb7 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_set_intersection.h @@ -0,0 +1,108 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SET_INTERSECTION_H +#define _LIBCPP___ALGORITHM_RANGES_SET_INTERSECTION_H + +#include <__algorithm/in_in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/set_intersection.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/mergeable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using set_intersection_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; + +namespace __set_intersection { + +struct __fn { + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + class _Comp = less, + class _Proj1 = identity, + class _Proj2 = identity> + requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_intersection_result<_InIter1, _InIter2, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_intersection<_RangeAlgPolicy>( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } + + template + requires mergeable, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_intersection_result, + borrowed_iterator_t<_Range2>, + _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_intersection<_RangeAlgPolicy>( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } +}; + +} // namespace __set_intersection + +inline namespace __cpo { +inline constexpr auto set_intersection = __set_intersection::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 +#endif // _LIBCPP___ALGORITHM_RANGES_SET_INTERSECTION_H diff --git a/lib/libcxx/include/__algorithm/ranges_set_symmetric_difference.h b/lib/libcxx/include/__algorithm/ranges_set_symmetric_difference.h new file mode 100644 index 0000000..d8710a1 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_set_symmetric_difference.h @@ -0,0 +1,108 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H +#define _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H + +#include <__algorithm/in_in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/set_symmetric_difference.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/mergeable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using set_symmetric_difference_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; + +namespace __set_symmetric_difference { + +struct __fn { + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + class _Comp = ranges::less, + class _Proj1 = identity, + class _Proj2 = identity> + requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<_InIter1, _InIter2, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } + + template + requires mergeable, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result, + borrowed_iterator_t<_Range2>, + _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } +}; + +} // namespace __set_symmetric_difference + +inline namespace __cpo { +inline constexpr auto set_symmetric_difference = __set_symmetric_difference::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 +#endif // _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H diff --git a/lib/libcxx/include/__algorithm/ranges_set_union.h b/lib/libcxx/include/__algorithm/ranges_set_union.h new file mode 100644 index 0000000..c627166 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_set_union.h @@ -0,0 +1,110 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SET_UNION_H +#define _LIBCPP___ALGORITHM_RANGES_SET_UNION_H + +#include <__algorithm/in_in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/set_union.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/mergeable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using set_union_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; + +namespace __set_union { + +struct __fn { + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + class _Comp = ranges::less, + class _Proj1 = identity, + class _Proj2 = identity> + requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_union_result<_InIter1, _InIter2, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_union<_RangeAlgPolicy>( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } + + template + requires mergeable, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> + _LIBCPP_HIDE_FROM_ABI constexpr set_union_result, borrowed_iterator_t<_Range2>, _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Comp __comp = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + auto __ret = std::__set_union<_RangeAlgPolicy>( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + std::move(__result), + ranges::__make_projected_comp(__comp, __proj1, __proj2)); + return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; + } +}; + +} // namespace __set_union + +inline namespace __cpo { +inline constexpr auto set_union = __set_union::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SET_UNION_H diff --git a/lib/libcxx/include/__algorithm/ranges_shuffle.h b/lib/libcxx/include/__algorithm/ranges_shuffle.h new file mode 100644 index 0000000..fca4200 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_shuffle.h @@ -0,0 +1,67 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H +#define _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/shuffle.h> +#include <__algorithm/uniform_random_bit_generator_adaptor.h> +#include <__config> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/permutable.h> +#include <__random/uniform_random_bit_generator.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__type_traits/remove_reference.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __shuffle { + +struct __fn { + template _Sent, class _Gen> + requires permutable<_Iter> && uniform_random_bit_generator> + _LIBCPP_HIDE_FROM_ABI _Iter operator()(_Iter __first, _Sent __last, _Gen&& __gen) const { + _ClassicGenAdaptor<_Gen> __adapted_gen(__gen); + return std::__shuffle<_RangeAlgPolicy>(std::move(__first), std::move(__last), __adapted_gen); + } + + template + requires permutable> && uniform_random_bit_generator> + _LIBCPP_HIDE_FROM_ABI borrowed_iterator_t<_Range> operator()(_Range&& __range, _Gen&& __gen) const { + return (*this)(ranges::begin(__range), ranges::end(__range), std::forward<_Gen>(__gen)); + } +}; + +} // namespace __shuffle + +inline namespace __cpo { +inline constexpr auto shuffle = __shuffle::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H diff --git a/lib/libcxx/include/__algorithm/ranges_sort.h b/lib/libcxx/include/__algorithm/ranges_sort.h new file mode 100644 index 0000000..2ad0e0c --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_sort.h @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SORT_H +#define _LIBCPP___ALGORITHM_RANGES_SORT_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/sort.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __sort { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __sort_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__sort_impl<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __sort_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __sort_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __sort + +inline namespace __cpo { +inline constexpr auto sort = __sort::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SORT_H diff --git a/lib/libcxx/include/__algorithm/ranges_sort_heap.h b/lib/libcxx/include/__algorithm/ranges_sort_heap.h new file mode 100644 index 0000000..365c7db --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_sort_heap.h @@ -0,0 +1,80 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SORT_HEAP_H +#define _LIBCPP___ALGORITHM_RANGES_SORT_HEAP_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/sort_heap.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __sort_heap { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI constexpr static _Iter + __sort_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__sort_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __sort_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __sort_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __sort_heap + +inline namespace __cpo { +inline constexpr auto sort_heap = __sort_heap::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SORT_HEAP_H diff --git a/lib/libcxx/include/__algorithm/ranges_stable_partition.h b/lib/libcxx/include/__algorithm/ranges_stable_partition.h new file mode 100644 index 0000000..44937fa --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_stable_partition.h @@ -0,0 +1,87 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_STABLE_PARTITION_H +#define _LIBCPP___ALGORITHM_RANGES_STABLE_PARTITION_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/ranges_iterator_concept.h> +#include <__algorithm/stable_partition.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/permutable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__ranges/subrange.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __stable_partition { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static subrange<__remove_cvref_t<_Iter>> + __stable_partition_fn_impl(_Iter&& __first, _Sent&& __last, _Pred&& __pred, _Proj&& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_pred = std::__make_projected(__pred, __proj); + auto __result = std::__stable_partition<_RangeAlgPolicy>( + std::move(__first), __last_iter, __projected_pred, __iterator_concept<_Iter>()); + + return {std::move(__result), std::move(__last_iter)}; + } + + template _Sent, + class _Proj = identity, + indirect_unary_predicate> _Pred> + requires permutable<_Iter> + _LIBCPP_HIDE_FROM_ABI subrange<_Iter> operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { + return __stable_partition_fn_impl(__first, __last, __pred, __proj); + } + + template , _Proj>> _Pred> + requires permutable> + _LIBCPP_HIDE_FROM_ABI borrowed_subrange_t<_Range> + operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { + return __stable_partition_fn_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); + } +}; + +} // namespace __stable_partition + +inline namespace __cpo { +inline constexpr auto stable_partition = __stable_partition::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_STABLE_PARTITION_H diff --git a/lib/libcxx/include/__algorithm/ranges_stable_sort.h b/lib/libcxx/include/__algorithm/ranges_stable_sort.h new file mode 100644 index 0000000..a4eed38 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_stable_sort.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_STABLE_SORT_H +#define _LIBCPP___ALGORITHM_RANGES_STABLE_SORT_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/stable_sort.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/projected.h> +#include <__iterator/sortable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __stable_sort { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI static _Iter __stable_sort_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { + auto __last_iter = ranges::next(__first, __last); + + auto&& __projected_comp = std::__make_projected(__comp, __proj); + std::__stable_sort_impl<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp); + + return __last_iter; + } + + template _Sent, class _Comp = ranges::less, class _Proj = identity> + requires sortable<_Iter, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI _Iter operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + return __stable_sort_fn_impl(std::move(__first), std::move(__last), __comp, __proj); + } + + template + requires sortable, _Comp, _Proj> + _LIBCPP_HIDE_FROM_ABI borrowed_iterator_t<_Range> + operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const { + return __stable_sort_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj); + } +}; + +} // namespace __stable_sort + +inline namespace __cpo { +inline constexpr auto stable_sort = __stable_sort::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_STABLE_SORT_H diff --git a/lib/libcxx/include/__algorithm/ranges_starts_with.h b/lib/libcxx/include/__algorithm/ranges_starts_with.h new file mode 100644 index 0000000..7da7800 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_starts_with.h @@ -0,0 +1,90 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H +#define _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H + +#include <__algorithm/in_in_result.h> +#include <__algorithm/ranges_mismatch.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __starts_with { +struct __fn { + template _Sent1, + input_iterator _Iter2, + sentinel_for<_Iter2> _Sent2, + class _Pred = ranges::equal_to, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Iter1 __first1, + _Sent1 __last1, + _Iter2 __first2, + _Sent2 __last2, + _Pred __pred = {}, + _Proj1 __proj1 = {}, + _Proj2 __proj2 = {}) const { + return __mismatch::__fn::__go( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + __pred, + __proj1, + __proj2) + .in2 == __last2; + } + + template + requires indirectly_comparable, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool operator()( + _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { + return __mismatch::__fn::__go( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + __pred, + __proj1, + __proj2) + .in2 == ranges::end(__range2); + } +}; +} // namespace __starts_with +inline namespace __cpo { +inline constexpr auto starts_with = __starts_with::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +#endif // _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H diff --git a/lib/libcxx/include/__algorithm/ranges_swap_ranges.h b/lib/libcxx/include/__algorithm/ranges_swap_ranges.h new file mode 100644 index 0000000..1d0ebc0 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_swap_ranges.h @@ -0,0 +1,65 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_SWAP_RANGES_H +#define _LIBCPP___ALGORITHM_RANGES_SWAP_RANGES_H + +#include <__algorithm/in_in_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/swap_ranges.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iter_swap.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using swap_ranges_result = in_in_result<_I1, _I2>; + +namespace __swap_ranges { +struct __fn { + template _S1, input_iterator _I2, sentinel_for<_I2> _S2> + requires indirectly_swappable<_I1, _I2> + _LIBCPP_HIDE_FROM_ABI constexpr swap_ranges_result<_I1, _I2> + operator()(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2) const { + auto __ret = std::__swap_ranges<_RangeAlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template + requires indirectly_swappable, iterator_t<_R2>> + _LIBCPP_HIDE_FROM_ABI constexpr swap_ranges_result, borrowed_iterator_t<_R2>> + operator()(_R1&& __r1, _R2&& __r2) const { + return operator()(ranges::begin(__r1), ranges::end(__r1), ranges::begin(__r2), ranges::end(__r2)); + } +}; +} // namespace __swap_ranges + +inline namespace __cpo { +inline constexpr auto swap_ranges = __swap_ranges::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_SWAP_RANGES_H diff --git a/lib/libcxx/include/__algorithm/ranges_transform.h b/lib/libcxx/include/__algorithm/ranges_transform.h new file mode 100644 index 0000000..f66a07a --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_transform.h @@ -0,0 +1,172 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_TRANSFORM_H +#define _LIBCPP___ALGORITHM_RANGES_TRANSFORM_H + +#include <__algorithm/in_in_out_result.h> +#include <__algorithm/in_out_result.h> +#include <__concepts/constructible.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using unary_transform_result = in_out_result<_Ip, _Op>; + +template +using binary_transform_result = in_in_out_result<_I1, _I2, _O1>; + +namespace __transform { +struct __fn { +private: + template + _LIBCPP_HIDE_FROM_ABI static constexpr unary_transform_result<_InIter, _OutIter> + __unary(_InIter __first, _Sent __last, _OutIter __result, _Func& __operation, _Proj& __projection) { + while (__first != __last) { + *__result = std::invoke(__operation, std::invoke(__projection, *__first)); + ++__first; + ++__result; + } + + return {std::move(__first), std::move(__result)}; + } + + template + _LIBCPP_HIDE_FROM_ABI static constexpr binary_transform_result<_InIter1, _InIter2, _OutIter> + __binary(_InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Func& __binary_operation, + _Proj1& __projection1, + _Proj2& __projection2) { + while (__first1 != __last1 && __first2 != __last2) { + *__result = + std::invoke(__binary_operation, std::invoke(__projection1, *__first1), std::invoke(__projection2, *__first2)); + ++__first1; + ++__first2; + ++__result; + } + return {std::move(__first1), std::move(__first2), std::move(__result)}; + } + +public: + template _Sent, + weakly_incrementable _OutIter, + copy_constructible _Func, + class _Proj = identity> + requires indirectly_writable<_OutIter, indirect_result_t<_Func&, projected<_InIter, _Proj>>> + _LIBCPP_HIDE_FROM_ABI constexpr unary_transform_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result, _Func __operation, _Proj __proj = {}) const { + return __unary(std::move(__first), std::move(__last), std::move(__result), __operation, __proj); + } + + template + requires indirectly_writable<_OutIter, indirect_result_t<_Func, projected, _Proj>>> + _LIBCPP_HIDE_FROM_ABI constexpr unary_transform_result, _OutIter> + operator()(_Range&& __range, _OutIter __result, _Func __operation, _Proj __projection = {}) const { + return __unary(ranges::begin(__range), ranges::end(__range), std::move(__result), __operation, __projection); + } + + template _Sent1, + input_iterator _InIter2, + sentinel_for<_InIter2> _Sent2, + weakly_incrementable _OutIter, + copy_constructible _Func, + class _Proj1 = identity, + class _Proj2 = identity> + requires indirectly_writable<_OutIter, + indirect_result_t<_Func&, projected<_InIter1, _Proj1>, projected<_InIter2, _Proj2>>> + _LIBCPP_HIDE_FROM_ABI constexpr binary_transform_result<_InIter1, _InIter2, _OutIter> operator()( + _InIter1 __first1, + _Sent1 __last1, + _InIter2 __first2, + _Sent2 __last2, + _OutIter __result, + _Func __binary_operation, + _Proj1 __projection1 = {}, + _Proj2 __projection2 = {}) const { + return __binary( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __binary_operation, + __projection1, + __projection2); + } + + template + requires indirectly_writable< + _OutIter, + indirect_result_t<_Func&, projected, _Proj1>, projected, _Proj2>>> + _LIBCPP_HIDE_FROM_ABI constexpr binary_transform_result, + borrowed_iterator_t<_Range2>, + _OutIter> + operator()(_Range1&& __range1, + _Range2&& __range2, + _OutIter __result, + _Func __binary_operation, + _Proj1 __projection1 = {}, + _Proj2 __projection2 = {}) const { + return __binary( + ranges::begin(__range1), + ranges::end(__range1), + ranges::begin(__range2), + ranges::end(__range2), + std::move(__result), + __binary_operation, + __projection1, + __projection2); + } +}; +} // namespace __transform + +inline namespace __cpo { +inline constexpr auto transform = __transform::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_TRANSFORM_H diff --git a/lib/libcxx/include/__algorithm/ranges_unique.h b/lib/libcxx/include/__algorithm/ranges_unique.h new file mode 100644 index 0000000..b17e01f --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_unique.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_UNIQUE_H +#define _LIBCPP___ALGORITHM_RANGES_UNIQUE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/unique.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/permutable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__ranges/subrange.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __unique { + +struct __fn { + template _Sent, + class _Proj = identity, + indirect_equivalence_relation> _Comp = ranges::equal_to> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> + operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = + std::__unique<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::__make_projected(__comp, __proj)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template , _Proj>> _Comp = ranges::equal_to> + requires permutable> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> + operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__unique<_RangeAlgPolicy>( + ranges::begin(__range), ranges::end(__range), std::__make_projected(__comp, __proj)); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; + +} // namespace __unique + +inline namespace __cpo { +inline constexpr auto unique = __unique::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_UNIQUE_H diff --git a/lib/libcxx/include/__algorithm/ranges_unique_copy.h b/lib/libcxx/include/__algorithm/ranges_unique_copy.h new file mode 100644 index 0000000..7e89f9d --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_unique_copy.h @@ -0,0 +1,115 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_UNIQUE_COPY_H +#define _LIBCPP___ALGORITHM_RANGES_UNIQUE_COPY_H + +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/make_projected.h> +#include <__algorithm/unique_copy.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template +using unique_copy_result = in_out_result<_InIter, _OutIter>; + +namespace __unique_copy { + +template +concept __can_reread_from_output = (input_iterator<_OutIter> && same_as, iter_value_t<_OutIter>>); + +struct __fn { + template + static consteval auto __get_algo_tag() { + if constexpr (forward_iterator<_InIter>) { + return __unique_copy_tags::__reread_from_input_tag{}; + } else if constexpr (__can_reread_from_output<_InIter, _OutIter>) { + return __unique_copy_tags::__reread_from_output_tag{}; + } else if constexpr (indirectly_copyable_storable<_InIter, _OutIter>) { + return __unique_copy_tags::__read_from_tmp_value_tag{}; + } + } + + template + using __algo_tag_t = decltype(__get_algo_tag<_InIter, _OutIter>()); + + template _Sent, + weakly_incrementable _OutIter, + class _Proj = identity, + indirect_equivalence_relation> _Comp = ranges::equal_to> + requires indirectly_copyable<_InIter, _OutIter> && + (forward_iterator<_InIter> || + (input_iterator<_OutIter> && same_as, iter_value_t<_OutIter>>) || + indirectly_copyable_storable<_InIter, _OutIter>) + _LIBCPP_HIDE_FROM_ABI constexpr unique_copy_result<_InIter, _OutIter> + operator()(_InIter __first, _Sent __last, _OutIter __result, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__unique_copy<_RangeAlgPolicy>( + std::move(__first), + std::move(__last), + std::move(__result), + std::__make_projected(__comp, __proj), + __algo_tag_t<_InIter, _OutIter>()); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template , _Proj>> _Comp = ranges::equal_to> + requires indirectly_copyable, _OutIter> && + (forward_iterator> || + (input_iterator<_OutIter> && same_as, iter_value_t<_OutIter>>) || + indirectly_copyable_storable, _OutIter>) + _LIBCPP_HIDE_FROM_ABI constexpr unique_copy_result, _OutIter> + operator()(_Range&& __range, _OutIter __result, _Comp __comp = {}, _Proj __proj = {}) const { + auto __ret = std::__unique_copy<_RangeAlgPolicy>( + ranges::begin(__range), + ranges::end(__range), + std::move(__result), + std::__make_projected(__comp, __proj), + __algo_tag_t, _OutIter>()); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; + +} // namespace __unique_copy + +inline namespace __cpo { +inline constexpr auto unique_copy = __unique_copy::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_UNIQUE_COPY_H diff --git a/lib/libcxx/include/__algorithm/ranges_upper_bound.h b/lib/libcxx/include/__algorithm/ranges_upper_bound.h new file mode 100644 index 0000000..a12a0e3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/ranges_upper_bound.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H +#define _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/lower_bound.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __upper_bound { +struct __fn { + template _Sent, + class _Type, + class _Proj = identity, + indirect_strict_weak_order> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Iter + operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) { + return !std::invoke(__comp, __rhs, __lhs); + }; + + return std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp_lhs_rhs_swapped, __proj); + } + + template , _Proj>> _Comp = ranges::less> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> + operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { + auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) { + return !std::invoke(__comp, __rhs, __lhs); + }; + + return std::__lower_bound<_RangeAlgPolicy>( + ranges::begin(__r), ranges::end(__r), __value, __comp_lhs_rhs_swapped, __proj); + } +}; +} // namespace __upper_bound + +inline namespace __cpo { +inline constexpr auto upper_bound = __upper_bound::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H diff --git a/lib/libcxx/include/__algorithm/remove.h b/lib/libcxx/include/__algorithm/remove.h new file mode 100644 index 0000000..533e41b --- /dev/null +++ b/lib/libcxx/include/__algorithm/remove.h @@ -0,0 +1,45 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REMOVE_H +#define _LIBCPP___ALGORITHM_REMOVE_H + +#include <__algorithm/find.h> +#include <__algorithm/find_if.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +remove(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) +{ + __first = _VSTD::find(__first, __last, __value); + if (__first != __last) + { + _ForwardIterator __i = __first; + while (++__i != __last) + { + if (!(*__i == __value)) + { + *__first = _VSTD::move(*__i); + ++__first; + } + } + } + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REMOVE_H diff --git a/lib/libcxx/include/__algorithm/remove_copy.h b/lib/libcxx/include/__algorithm/remove_copy.h new file mode 100644 index 0000000..ecba08a --- /dev/null +++ b/lib/libcxx/include/__algorithm/remove_copy.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REMOVE_COPY_H +#define _LIBCPP___ALGORITHM_REMOVE_COPY_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +remove_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, const _Tp& __value) +{ + for (; __first != __last; ++__first) + { + if (!(*__first == __value)) + { + *__result = *__first; + ++__result; + } + } + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REMOVE_COPY_H diff --git a/lib/libcxx/include/__algorithm/remove_copy_if.h b/lib/libcxx/include/__algorithm/remove_copy_if.h new file mode 100644 index 0000000..2f235fd --- /dev/null +++ b/lib/libcxx/include/__algorithm/remove_copy_if.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H +#define _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +remove_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred) +{ + for (; __first != __last; ++__first) + { + if (!__pred(*__first)) + { + *__result = *__first; + ++__result; + } + } + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/remove_if.h b/lib/libcxx/include/__algorithm/remove_if.h new file mode 100644 index 0000000..2735072 --- /dev/null +++ b/lib/libcxx/include/__algorithm/remove_if.h @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REMOVE_IF_H +#define _LIBCPP___ALGORITHM_REMOVE_IF_H + +#include <__algorithm/find_if.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) +{ + __first = _VSTD::find_if<_ForwardIterator, _Predicate&>(__first, __last, __pred); + if (__first != __last) + { + _ForwardIterator __i = __first; + while (++__i != __last) + { + if (!__pred(*__i)) + { + *__first = _VSTD::move(*__i); + ++__first; + } + } + } + return __first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REMOVE_IF_H diff --git a/lib/libcxx/include/__algorithm/replace.h b/lib/libcxx/include/__algorithm/replace.h new file mode 100644 index 0000000..ce62150 --- /dev/null +++ b/lib/libcxx/include/__algorithm/replace.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REPLACE_H +#define _LIBCPP___ALGORITHM_REPLACE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +replace(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __old_value, const _Tp& __new_value) +{ + for (; __first != __last; ++__first) + if (*__first == __old_value) + *__first = __new_value; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REPLACE_H diff --git a/lib/libcxx/include/__algorithm/replace_copy.h b/lib/libcxx/include/__algorithm/replace_copy.h new file mode 100644 index 0000000..bebb14c --- /dev/null +++ b/lib/libcxx/include/__algorithm/replace_copy.h @@ -0,0 +1,36 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REPLACE_COPY_H +#define _LIBCPP___ALGORITHM_REPLACE_COPY_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +replace_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, + const _Tp& __old_value, const _Tp& __new_value) +{ + for (; __first != __last; ++__first, (void) ++__result) + if (*__first == __old_value) + *__result = __new_value; + else + *__result = *__first; + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REPLACE_COPY_H diff --git a/lib/libcxx/include/__algorithm/replace_copy_if.h b/lib/libcxx/include/__algorithm/replace_copy_if.h new file mode 100644 index 0000000..e1ddb52 --- /dev/null +++ b/lib/libcxx/include/__algorithm/replace_copy_if.h @@ -0,0 +1,36 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H +#define _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +replace_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result, + _Predicate __pred, const _Tp& __new_value) +{ + for (; __first != __last; ++__first, (void) ++__result) + if (__pred(*__first)) + *__result = __new_value; + else + *__result = *__first; + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H diff --git a/lib/libcxx/include/__algorithm/replace_if.h b/lib/libcxx/include/__algorithm/replace_if.h new file mode 100644 index 0000000..b3a3367 --- /dev/null +++ b/lib/libcxx/include/__algorithm/replace_if.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REPLACE_IF_H +#define _LIBCPP___ALGORITHM_REPLACE_IF_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +replace_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, const _Tp& __new_value) +{ + for (; __first != __last; ++__first) + if (__pred(*__first)) + *__first = __new_value; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REPLACE_IF_H diff --git a/lib/libcxx/include/__algorithm/reverse.h b/lib/libcxx/include/__algorithm/reverse.h new file mode 100644 index 0000000..aa76951 --- /dev/null +++ b/lib/libcxx/include/__algorithm/reverse.h @@ -0,0 +1,65 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REVERSE_H +#define _LIBCPP___ALGORITHM_REVERSE_H + +#include <__algorithm/iter_swap.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +__reverse_impl(_BidirectionalIterator __first, _BidirectionalIterator __last, bidirectional_iterator_tag) +{ + while (__first != __last) + { + if (__first == --__last) + break; + _IterOps<_AlgPolicy>::iter_swap(__first, __last); + ++__first; + } +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +__reverse_impl(_RandomAccessIterator __first, _RandomAccessIterator __last, random_access_iterator_tag) +{ + if (__first != __last) + for (; __first < --__last; ++__first) + _IterOps<_AlgPolicy>::iter_swap(__first, __last); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void __reverse(_BidirectionalIterator __first, _Sentinel __last) { + using _IterCategory = typename _IterOps<_AlgPolicy>::template __iterator_category<_BidirectionalIterator>; + std::__reverse_impl<_AlgPolicy>(std::move(__first), std::move(__last), _IterCategory()); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +reverse(_BidirectionalIterator __first, _BidirectionalIterator __last) +{ + std::__reverse<_ClassicAlgPolicy>(std::move(__first), std::move(__last)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REVERSE_H diff --git a/lib/libcxx/include/__algorithm/reverse_copy.h b/lib/libcxx/include/__algorithm/reverse_copy.h new file mode 100644 index 0000000..f4a0e97 --- /dev/null +++ b/lib/libcxx/include/__algorithm/reverse_copy.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_REVERSE_COPY_H +#define _LIBCPP___ALGORITHM_REVERSE_COPY_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +reverse_copy(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result) +{ + for (; __first != __last; ++__result) + *__result = *--__last; + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_REVERSE_COPY_H diff --git a/lib/libcxx/include/__algorithm/rotate.h b/lib/libcxx/include/__algorithm/rotate.h new file mode 100644 index 0000000..7ed6f18 --- /dev/null +++ b/lib/libcxx/include/__algorithm/rotate.h @@ -0,0 +1,221 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ROTATE_H +#define _LIBCPP___ALGORITHM_ROTATE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/move.h> +#include <__algorithm/move_backward.h> +#include <__algorithm/swap_ranges.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_trivially_move_assignable.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +__rotate_left(_ForwardIterator __first, _ForwardIterator __last) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; + using _Ops = _IterOps<_AlgPolicy>; + + value_type __tmp = _Ops::__iter_move(__first); + _ForwardIterator __lm1 = std::__move<_AlgPolicy>( + _Ops::next(__first), __last, __first).second; + *__lm1 = _VSTD::move(__tmp); + return __lm1; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _BidirectionalIterator +__rotate_right(_BidirectionalIterator __first, _BidirectionalIterator __last) +{ + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + using _Ops = _IterOps<_AlgPolicy>; + + _BidirectionalIterator __lm1 = _Ops::prev(__last); + value_type __tmp = _Ops::__iter_move(__lm1); + _BidirectionalIterator __fp1 = std::__move_backward<_AlgPolicy>(__first, __lm1, std::move(__last)).second; + *__first = _VSTD::move(__tmp); + return __fp1; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 _ForwardIterator +__rotate_forward(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last) +{ + _ForwardIterator __i = __middle; + while (true) + { + _IterOps<_AlgPolicy>::iter_swap(__first, __i); + ++__first; + if (++__i == __last) + break; + if (__first == __middle) + __middle = __i; + } + _ForwardIterator __r = __first; + if (__first != __middle) + { + __i = __middle; + while (true) + { + _IterOps<_AlgPolicy>::iter_swap(__first, __i); + ++__first; + if (++__i == __last) + { + if (__first == __middle) + break; + __i = __middle; + } + else if (__first == __middle) + __middle = __i; + } + } + return __r; +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR_SINCE_CXX17 _Integral +__algo_gcd(_Integral __x, _Integral __y) +{ + do + { + _Integral __t = __x % __y; + __x = __y; + __y = __t; + } while (__y); + return __x; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 _RandomAccessIterator +__rotate_gcd(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last) +{ + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + using _Ops = _IterOps<_AlgPolicy>; + + const difference_type __m1 = __middle - __first; + const difference_type __m2 = _Ops::distance(__middle, __last); + if (__m1 == __m2) + { + std::__swap_ranges<_AlgPolicy>(__first, __middle, __middle, __last); + return __middle; + } + const difference_type __g = _VSTD::__algo_gcd(__m1, __m2); + for (_RandomAccessIterator __p = __first + __g; __p != __first;) + { + value_type __t(_Ops::__iter_move(--__p)); + _RandomAccessIterator __p1 = __p; + _RandomAccessIterator __p2 = __p1 + __m1; + do + { + *__p1 = _Ops::__iter_move(__p2); + __p1 = __p2; + const difference_type __d = _Ops::distance(__p2, __last); + if (__m1 < __d) + __p2 += __m1; + else + __p2 = __first + (__m1 - __d); + } while (__p2 != __p); + *__p1 = _VSTD::move(__t); + } + return __first + __m2; +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator +__rotate_impl(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last, + _VSTD::forward_iterator_tag) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; + if (is_trivially_move_assignable::value) + { + if (_IterOps<_AlgPolicy>::next(__first) == __middle) + return std::__rotate_left<_AlgPolicy>(__first, __last); + } + return std::__rotate_forward<_AlgPolicy>(__first, __middle, __last); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR_SINCE_CXX14 _BidirectionalIterator +__rotate_impl(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last, + bidirectional_iterator_tag) +{ + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + if (is_trivially_move_assignable::value) + { + if (_IterOps<_AlgPolicy>::next(__first) == __middle) + return std::__rotate_left<_AlgPolicy>(__first, __last); + if (_IterOps<_AlgPolicy>::next(__middle) == __last) + return std::__rotate_right<_AlgPolicy>(__first, __last); + } + return std::__rotate_forward<_AlgPolicy>(__first, __middle, __last); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR_SINCE_CXX14 _RandomAccessIterator +__rotate_impl(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last, + random_access_iterator_tag) +{ + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + if (is_trivially_move_assignable::value) + { + if (_IterOps<_AlgPolicy>::next(__first) == __middle) + return std::__rotate_left<_AlgPolicy>(__first, __last); + if (_IterOps<_AlgPolicy>::next(__middle) == __last) + return std::__rotate_right<_AlgPolicy>(__first, __last); + return std::__rotate_gcd<_AlgPolicy>(__first, __middle, __last); + } + return std::__rotate_forward<_AlgPolicy>(__first, __middle, __last); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iterator, _Iterator> +__rotate(_Iterator __first, _Iterator __middle, _Sentinel __last) { + using _Ret = pair<_Iterator, _Iterator>; + _Iterator __last_iter = _IterOps<_AlgPolicy>::next(__middle, __last); + + if (__first == __middle) + return _Ret(__last_iter, __last_iter); + if (__middle == __last) + return _Ret(std::move(__first), std::move(__last_iter)); + + using _IterCategory = typename _IterOps<_AlgPolicy>::template __iterator_category<_Iterator>; + auto __result = std::__rotate_impl<_AlgPolicy>( + std::move(__first), std::move(__middle), __last_iter, _IterCategory()); + + return _Ret(std::move(__result), std::move(__last_iter)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last) +{ + return std::__rotate<_ClassicAlgPolicy>( + std::move(__first), std::move(__middle), std::move(__last)).first; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_ROTATE_H diff --git a/lib/libcxx/include/__algorithm/rotate_copy.h b/lib/libcxx/include/__algorithm/rotate_copy.h new file mode 100644 index 0000000..c154649 --- /dev/null +++ b/lib/libcxx/include/__algorithm/rotate_copy.h @@ -0,0 +1,31 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_ROTATE_COPY_H +#define _LIBCPP___ALGORITHM_ROTATE_COPY_H + +#include <__algorithm/copy.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +rotate_copy(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last, _OutputIterator __result) +{ + return _VSTD::copy(__first, __middle, _VSTD::copy(__middle, __last, __result)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_ROTATE_COPY_H diff --git a/lib/libcxx/include/__algorithm/sample.h b/lib/libcxx/include/__algorithm/sample.h new file mode 100644 index 0000000..c7a1898 --- /dev/null +++ b/lib/libcxx/include/__algorithm/sample.h @@ -0,0 +1,112 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SAMPLE_H +#define _LIBCPP___ALGORITHM_SAMPLE_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min.h> +#include <__assert> +#include <__config> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__random/uniform_int_distribution.h> +#include <__type_traits/common_type.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_INLINE_VISIBILITY +_SampleIterator __sample(_PopulationIterator __first, + _PopulationSentinel __last, _SampleIterator __output_iter, + _Distance __n, + _UniformRandomNumberGenerator& __g, + input_iterator_tag) { + + _Distance __k = 0; + for (; __first != __last && __k < __n; ++__first, (void) ++__k) + __output_iter[__k] = *__first; + _Distance __sz = __k; + for (; __first != __last; ++__first, (void) ++__k) { + _Distance __r = uniform_int_distribution<_Distance>(0, __k)(__g); + if (__r < __sz) + __output_iter[__r] = *__first; + } + return __output_iter + _VSTD::min(__n, __k); +} + +template +_LIBCPP_INLINE_VISIBILITY +_SampleIterator __sample(_PopulationIterator __first, + _PopulationSentinel __last, _SampleIterator __output_iter, + _Distance __n, + _UniformRandomNumberGenerator& __g, + forward_iterator_tag) { + _Distance __unsampled_sz = _IterOps<_AlgPolicy>::distance(__first, __last); + for (__n = _VSTD::min(__n, __unsampled_sz); __n != 0; ++__first) { + _Distance __r = uniform_int_distribution<_Distance>(0, --__unsampled_sz)(__g); + if (__r < __n) { + *__output_iter++ = *__first; + --__n; + } + } + return __output_iter; +} + +template +_LIBCPP_INLINE_VISIBILITY +_SampleIterator __sample(_PopulationIterator __first, + _PopulationSentinel __last, _SampleIterator __output_iter, + _Distance __n, _UniformRandomNumberGenerator& __g) { + _LIBCPP_ASSERT_UNCATEGORIZED(__n >= 0, "N must be a positive number."); + + using _PopIterCategory = typename _IterOps<_AlgPolicy>::template __iterator_category<_PopulationIterator>; + using _Difference = typename _IterOps<_AlgPolicy>::template __difference_type<_PopulationIterator>; + using _CommonType = typename common_type<_Distance, _Difference>::type; + + return std::__sample<_AlgPolicy>( + std::move(__first), std::move(__last), std::move(__output_iter), _CommonType(__n), + __g, _PopIterCategory()); +} + +#if _LIBCPP_STD_VER >= 17 +template +inline _LIBCPP_INLINE_VISIBILITY +_SampleIterator sample(_PopulationIterator __first, + _PopulationIterator __last, _SampleIterator __output_iter, + _Distance __n, _UniformRandomNumberGenerator&& __g) { + static_assert(__has_forward_iterator_category<_PopulationIterator>::value || + __has_random_access_iterator_category<_SampleIterator>::value, + "SampleIterator must meet the requirements of RandomAccessIterator"); + + return std::__sample<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), std::move(__output_iter), __n, __g); +} + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_SAMPLE_H diff --git a/lib/libcxx/include/__algorithm/search.h b/lib/libcxx/include/__algorithm/search.h new file mode 100644 index 0000000..5882a04 --- /dev/null +++ b/lib/libcxx/include/__algorithm/search.h @@ -0,0 +1,202 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SEARCH_H +#define _LIBCPP___ALGORITHM_SEARCH_H + +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_callable.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter1, _Iter1> __search_forward_impl(_Iter1 __first1, _Sent1 __last1, + _Iter2 __first2, _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2) { + if (__first2 == __last2) + return std::make_pair(__first1, __first1); // Everything matches an empty sequence + while (true) { + // Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks + while (true) { + if (__first1 == __last1) { // return __last1 if no element matches *__first2 + _IterOps<_AlgPolicy>::__advance_to(__first1, __last1); + return std::make_pair(__first1, __first1); + } + if (std::__invoke(__pred, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + break; + ++__first1; + } + // *__first1 matches *__first2, now match elements after here + _Iter1 __m1 = __first1; + _Iter2 __m2 = __first2; + while (true) { + if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern) + return std::make_pair(__first1, ++__m1); + if (++__m1 == __last1) { // Otherwise if source exhaused, pattern not found + return std::make_pair(__m1, __m1); + } + + // if there is a mismatch, restart with a new __first1 + if (!std::__invoke(__pred, std::__invoke(__proj1, *__m1), std::__invoke(__proj2, *__m2))) + { + ++__first1; + break; + } // else there is a match, check next elements + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter1, _Iter1> __search_random_access_impl(_Iter1 __first1, _Sent1 __last1, + _Iter2 __first2, _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + _DiffT1 __size1, + _DiffT2 __size2) { + const _Iter1 __s = __first1 + __size1 - _DiffT1(__size2 - 1); // Start of pattern match can't go beyond here + + while (true) { + while (true) { + if (__first1 == __s) { + _IterOps<_AlgPolicy>::__advance_to(__first1, __last1); + return std::make_pair(__first1, __first1); + } + if (std::__invoke(__pred, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) + break; + ++__first1; + } + + _Iter1 __m1 = __first1; + _Iter2 __m2 = __first2; + while (true) { + if (++__m2 == __last2) + return std::make_pair(__first1, __first1 + _DiffT1(__size2)); + ++__m1; // no need to check range on __m1 because __s guarantees we have enough source + if (!std::__invoke(__pred, std::__invoke(__proj1, *__m1), std::__invoke(__proj2, *__m2))) { + ++__first1; + break; + } + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter1, _Iter1> __search_impl(_Iter1 __first1, _Sent1 __last1, + _Iter2 __first2, _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + __enable_if_t<__has_random_access_iterator_category<_Iter1>::value + && __has_random_access_iterator_category<_Iter2>::value>* = nullptr) { + + auto __size2 = __last2 - __first2; + if (__size2 == 0) + return std::make_pair(__first1, __first1); + + auto __size1 = __last1 - __first1; + if (__size1 < __size2) { + return std::make_pair(__last1, __last1); + } + + return std::__search_random_access_impl<_ClassicAlgPolicy>(__first1, __last1, + __first2, __last2, + __pred, + __proj1, + __proj2, + __size1, + __size2); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter1, _Iter1> __search_impl(_Iter1 __first1, _Sent1 __last1, + _Iter2 __first2, _Sent2 __last2, + _Pred& __pred, + _Proj1& __proj1, + _Proj2& __proj2, + __enable_if_t<__has_forward_iterator_category<_Iter1>::value + && __has_forward_iterator_category<_Iter2>::value + && !(__has_random_access_iterator_category<_Iter1>::value + && __has_random_access_iterator_category<_Iter2>::value)>* = nullptr) { + return std::__search_forward_impl<_ClassicAlgPolicy>(__first1, __last1, + __first2, __last2, + __pred, + __proj1, + __proj2); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator1 search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, + _ForwardIterator2 __first2, _ForwardIterator2 __last2, + _BinaryPredicate __pred) { + static_assert(__is_callable<_BinaryPredicate, decltype(*__first1), decltype(*__first2)>::value, + "BinaryPredicate has to be callable"); + auto __proj = __identity(); + return std::__search_impl(__first1, __last1, __first2, __last2, __pred, __proj, __proj).first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator1 search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, + _ForwardIterator2 __first2, _ForwardIterator2 __last2) { + return std::search(__first1, __last1, __first2, __last2, __equal_to()); +} + +#if _LIBCPP_STD_VER >= 17 +template +_LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +search(_ForwardIterator __f, _ForwardIterator __l, const _Searcher& __s) { + return __s(__f, __l).first; +} + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SEARCH_H diff --git a/lib/libcxx/include/__algorithm/search_n.h b/lib/libcxx/include/__algorithm/search_n.h new file mode 100644 index 0000000..7e3ddf4 --- /dev/null +++ b/lib/libcxx/include/__algorithm/search_n.h @@ -0,0 +1,182 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SEARCH_N_H +#define _LIBCPP___ALGORITHM_SEARCH_N_H + +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/concepts.h> +#include <__type_traits/is_callable.h> +#include <__utility/convert_to_integral.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter, _Iter> __search_n_forward_impl(_Iter __first, _Sent __last, + _SizeT __count, + const _Type& __value, + _Pred& __pred, + _Proj& __proj) { + if (__count <= 0) + return std::make_pair(__first, __first); + while (true) { + // Find first element in sequence that matchs __value, with a mininum of loop checks + while (true) { + if (__first == __last) { // return __last if no element matches __value + _IterOps<_AlgPolicy>::__advance_to(__first, __last); + return std::make_pair(__first, __first); + } + if (std::__invoke(__pred, std::__invoke(__proj, *__first), __value)) + break; + ++__first; + } + // *__first matches __value, now match elements after here + _Iter __m = __first; + _SizeT __c(0); + while (true) { + if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern) + return std::make_pair(__first, ++__m); + if (++__m == __last) { // Otherwise if source exhaused, pattern not found + _IterOps<_AlgPolicy>::__advance_to(__first, __last); + return std::make_pair(__first, __first); + } + + // if there is a mismatch, restart with a new __first + if (!std::__invoke(__pred, std::__invoke(__proj, *__m), __value)) + { + __first = __m; + ++__first; + break; + } // else there is a match, check next elements + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +std::pair<_Iter, _Iter> __search_n_random_access_impl(_Iter __first, _Sent __last, + _SizeT __count, + const _Type& __value, + _Pred& __pred, + _Proj& __proj, + _DiffT __size1) { + using difference_type = typename iterator_traits<_Iter>::difference_type; + if (__count == 0) + return std::make_pair(__first, __first); + if (__size1 < static_cast<_DiffT>(__count)) { + _IterOps<_AlgPolicy>::__advance_to(__first, __last); + return std::make_pair(__first, __first); + } + + const auto __s = __first + __size1 - difference_type(__count - 1); // Start of pattern match can't go beyond here + while (true) { + // Find first element in sequence that matchs __value, with a mininum of loop checks + while (true) { + if (__first >= __s) { // return __last if no element matches __value + _IterOps<_AlgPolicy>::__advance_to(__first, __last); + return std::make_pair(__first, __first); + } + if (std::__invoke(__pred, std::__invoke(__proj, *__first), __value)) + break; + ++__first; + } + // *__first matches __value_, now match elements after here + auto __m = __first; + _SizeT __c(0); + while (true) { + if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern) + return std::make_pair(__first, __first + _DiffT(__count)); + ++__m; // no need to check range on __m because __s guarantees we have enough source + + // if there is a mismatch, restart with a new __first + if (!std::__invoke(__pred, std::__invoke(__proj, *__m), __value)) + { + __first = __m; + ++__first; + break; + } // else there is a match, check next elements + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter, _Iter> __search_n_impl(_Iter __first, _Sent __last, + _DiffT __count, + const _Type& __value, + _Pred& __pred, + _Proj& __proj, + __enable_if_t<__has_random_access_iterator_category<_Iter>::value>* = nullptr) { + return std::__search_n_random_access_impl<_ClassicAlgPolicy>(__first, __last, + __count, + __value, + __pred, + __proj, + __last - __first); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +pair<_Iter1, _Iter1> __search_n_impl(_Iter1 __first, _Sent1 __last, + _DiffT __count, + const _Type& __value, + _Pred& __pred, + _Proj& __proj, + __enable_if_t<__has_forward_iterator_category<_Iter1>::value + && !__has_random_access_iterator_category<_Iter1>::value>* = nullptr) { + return std::__search_n_forward_impl<_ClassicAlgPolicy>(__first, __last, + __count, + __value, + __pred, + __proj); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator search_n(_ForwardIterator __first, _ForwardIterator __last, + _Size __count, + const _Tp& __value, + _BinaryPredicate __pred) { + static_assert(__is_callable<_BinaryPredicate, decltype(*__first), const _Tp&>::value, + "BinaryPredicate has to be callable"); + auto __proj = __identity(); + return std::__search_n_impl(__first, __last, std::__convert_to_integral(__count), __value, __pred, __proj).first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +_ForwardIterator search_n(_ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value) { + return std::search_n(__first, __last, std::__convert_to_integral(__count), __value, __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SEARCH_N_H diff --git a/lib/libcxx/include/__algorithm/set_difference.h b/lib/libcxx/include/__algorithm/set_difference.h new file mode 100644 index 0000000..26a3000 --- /dev/null +++ b/lib/libcxx/include/__algorithm/set_difference.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SET_DIFFERENCE_H +#define _LIBCPP___ALGORITHM_SET_DIFFERENCE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/copy.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<__remove_cvref_t<_InIter1>, __remove_cvref_t<_OutIter> > +__set_difference( + _InIter1&& __first1, _Sent1&& __last1, _InIter2&& __first2, _Sent2&& __last2, _OutIter&& __result, _Comp&& __comp) { + while (__first1 != __last1 && __first2 != __last2) { + if (__comp(*__first1, *__first2)) { + *__result = *__first1; + ++__first1; + ++__result; + } else if (__comp(*__first2, *__first1)) { + ++__first2; + } else { + ++__first1; + ++__first2; + } + } + return std::__copy<_AlgPolicy>(std::move(__first1), std::move(__last1), std::move(__result)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_difference( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result, + _Compare __comp) { + return std::__set_difference<_ClassicAlgPolicy, __comp_ref_type<_Compare> >( + __first1, __last1, __first2, __last2, __result, __comp) + .second; +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_difference( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result) { + return std::__set_difference<_ClassicAlgPolicy>(__first1, __last1, __first2, __last2, __result, __less<>()).second; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SET_DIFFERENCE_H diff --git a/lib/libcxx/include/__algorithm/set_intersection.h b/lib/libcxx/include/__algorithm/set_intersection.h new file mode 100644 index 0000000..f2603fe --- /dev/null +++ b/lib/libcxx/include/__algorithm/set_intersection.h @@ -0,0 +1,98 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SET_INTERSECTION_H +#define _LIBCPP___ALGORITHM_SET_INTERSECTION_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __set_intersection_result { + _InIter1 __in1_; + _InIter2 __in2_; + _OutIter __out_; + + // need a constructor as C++03 aggregate init is hard + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 + __set_intersection_result(_InIter1&& __in_iter1, _InIter2&& __in_iter2, _OutIter&& __out_iter) + : __in1_(std::move(__in_iter1)), __in2_(std::move(__in_iter2)), __out_(std::move(__out_iter)) {} +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __set_intersection_result<_InIter1, _InIter2, _OutIter> +__set_intersection( + _InIter1 __first1, _Sent1 __last1, _InIter2 __first2, _Sent2 __last2, _OutIter __result, _Compare&& __comp) { + while (__first1 != __last1 && __first2 != __last2) { + if (__comp(*__first1, *__first2)) + ++__first1; + else { + if (!__comp(*__first2, *__first1)) { + *__result = *__first1; + ++__result; + ++__first1; + } + ++__first2; + } + } + + return __set_intersection_result<_InIter1, _InIter2, _OutIter>( + _IterOps<_AlgPolicy>::next(std::move(__first1), std::move(__last1)), + _IterOps<_AlgPolicy>::next(std::move(__first2), std::move(__last2)), + std::move(__result)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_intersection( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result, + _Compare __comp) { + return std::__set_intersection<_ClassicAlgPolicy, __comp_ref_type<_Compare> >( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __comp) + .__out_; +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_intersection( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result) { + return std::__set_intersection<_ClassicAlgPolicy>( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __less<>()) + .__out_; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SET_INTERSECTION_H diff --git a/lib/libcxx/include/__algorithm/set_symmetric_difference.h b/lib/libcxx/include/__algorithm/set_symmetric_difference.h new file mode 100644 index 0000000..832c397 --- /dev/null +++ b/lib/libcxx/include/__algorithm/set_symmetric_difference.h @@ -0,0 +1,104 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H +#define _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/copy.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __set_symmetric_difference_result { + _InIter1 __in1_; + _InIter2 __in2_; + _OutIter __out_; + + // need a constructor as C++03 aggregate init is hard + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 + __set_symmetric_difference_result(_InIter1&& __in_iter1, _InIter2&& __in_iter2, _OutIter&& __out_iter) + : __in1_(std::move(__in_iter1)), __in2_(std::move(__in_iter2)), __out_(std::move(__out_iter)) {} +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __set_symmetric_difference_result<_InIter1, _InIter2, _OutIter> +__set_symmetric_difference( + _InIter1 __first1, _Sent1 __last1, _InIter2 __first2, _Sent2 __last2, _OutIter __result, _Compare&& __comp) { + while (__first1 != __last1) { + if (__first2 == __last2) { + auto __ret1 = std::__copy<_AlgPolicy>(std::move(__first1), std::move(__last1), std::move(__result)); + return __set_symmetric_difference_result<_InIter1, _InIter2, _OutIter>( + std::move(__ret1.first), std::move(__first2), std::move((__ret1.second))); + } + if (__comp(*__first1, *__first2)) { + *__result = *__first1; + ++__result; + ++__first1; + } else { + if (__comp(*__first2, *__first1)) { + *__result = *__first2; + ++__result; + } else { + ++__first1; + } + ++__first2; + } + } + auto __ret2 = std::__copy<_AlgPolicy>(std::move(__first2), std::move(__last2), std::move(__result)); + return __set_symmetric_difference_result<_InIter1, _InIter2, _OutIter>( + std::move(__first1), std::move(__ret2.first), std::move((__ret2.second))); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_symmetric_difference( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result, + _Compare __comp) { + return std::__set_symmetric_difference<_ClassicAlgPolicy, __comp_ref_type<_Compare> >( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __comp) + .__out_; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_symmetric_difference( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result) { + return std::set_symmetric_difference( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H diff --git a/lib/libcxx/include/__algorithm/set_union.h b/lib/libcxx/include/__algorithm/set_union.h new file mode 100644 index 0000000..cf48ada --- /dev/null +++ b/lib/libcxx/include/__algorithm/set_union.h @@ -0,0 +1,100 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SET_UNION_H +#define _LIBCPP___ALGORITHM_SET_UNION_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/copy.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __set_union_result { + _InIter1 __in1_; + _InIter2 __in2_; + _OutIter __out_; + + // need a constructor as C++03 aggregate init is hard + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 + __set_union_result(_InIter1&& __in_iter1, _InIter2&& __in_iter2, _OutIter&& __out_iter) + : __in1_(std::move(__in_iter1)), __in2_(std::move(__in_iter2)), __out_(std::move(__out_iter)) {} +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __set_union_result<_InIter1, _InIter2, _OutIter> __set_union( + _InIter1 __first1, _Sent1 __last1, _InIter2 __first2, _Sent2 __last2, _OutIter __result, _Compare&& __comp) { + for (; __first1 != __last1; ++__result) { + if (__first2 == __last2) { + auto __ret1 = std::__copy<_AlgPolicy>(std::move(__first1), std::move(__last1), std::move(__result)); + return __set_union_result<_InIter1, _InIter2, _OutIter>( + std::move(__ret1.first), std::move(__first2), std::move((__ret1.second))); + } + if (__comp(*__first2, *__first1)) { + *__result = *__first2; + ++__first2; + } else { + if (!__comp(*__first1, *__first2)) { + ++__first2; + } + *__result = *__first1; + ++__first1; + } + } + auto __ret2 = std::__copy<_AlgPolicy>(std::move(__first2), std::move(__last2), std::move(__result)); + return __set_union_result<_InIter1, _InIter2, _OutIter>( + std::move(__first1), std::move(__ret2.first), std::move((__ret2.second))); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_union( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result, + _Compare __comp) { + return std::__set_union<_ClassicAlgPolicy, __comp_ref_type<_Compare> >( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __comp) + .__out_; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator set_union( + _InputIterator1 __first1, + _InputIterator1 __last1, + _InputIterator2 __first2, + _InputIterator2 __last2, + _OutputIterator __result) { + return std::set_union( + std::move(__first1), + std::move(__last1), + std::move(__first2), + std::move(__last2), + std::move(__result), + __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SET_UNION_H diff --git a/lib/libcxx/include/__algorithm/shift_left.h b/lib/libcxx/include/__algorithm/shift_left.h new file mode 100644 index 0000000..023b56d --- /dev/null +++ b/lib/libcxx/include/__algorithm/shift_left.h @@ -0,0 +1,55 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SHIFT_LEFT_H +#define _LIBCPP___ALGORITHM_SHIFT_LEFT_H + +#include <__algorithm/move.h> +#include <__config> +#include <__iterator/iterator_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +inline _LIBCPP_INLINE_VISIBILITY constexpr +_ForwardIterator +shift_left(_ForwardIterator __first, _ForwardIterator __last, + typename iterator_traits<_ForwardIterator>::difference_type __n) +{ + if (__n == 0) { + return __last; + } + + _ForwardIterator __m = __first; + if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) { + if (__n >= __last - __first) { + return __first; + } + __m += __n; + } else { + for (; __n > 0; --__n) { + if (__m == __last) { + return __first; + } + ++__m; + } + } + return _VSTD::move(__m, __last, __first); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SHIFT_LEFT_H diff --git a/lib/libcxx/include/__algorithm/shift_right.h b/lib/libcxx/include/__algorithm/shift_right.h new file mode 100644 index 0000000..70aff45 --- /dev/null +++ b/lib/libcxx/include/__algorithm/shift_right.h @@ -0,0 +1,101 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SHIFT_RIGHT_H +#define _LIBCPP___ALGORITHM_SHIFT_RIGHT_H + +#include <__algorithm/move.h> +#include <__algorithm/move_backward.h> +#include <__algorithm/swap_ranges.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/swap.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +inline _LIBCPP_INLINE_VISIBILITY constexpr +_ForwardIterator +shift_right(_ForwardIterator __first, _ForwardIterator __last, + typename iterator_traits<_ForwardIterator>::difference_type __n) +{ + if (__n == 0) { + return __first; + } + + if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) { + decltype(__n) __d = __last - __first; + if (__n >= __d) { + return __last; + } + _ForwardIterator __m = __first + (__d - __n); + return _VSTD::move_backward(__first, __m, __last); + } else if constexpr (__has_bidirectional_iterator_category<_ForwardIterator>::value) { + _ForwardIterator __m = __last; + for (; __n > 0; --__n) { + if (__m == __first) { + return __last; + } + --__m; + } + return _VSTD::move_backward(__first, __m, __last); + } else { + _ForwardIterator __ret = __first; + for (; __n > 0; --__n) { + if (__ret == __last) { + return __last; + } + ++__ret; + } + + // We have an __n-element scratch space from __first to __ret. + // Slide an __n-element window [__trail, __lead) from left to right. + // We're essentially doing swap_ranges(__first, __ret, __trail, __lead) + // over and over; but once __lead reaches __last we needn't bother + // to save the values of elements [__trail, __last). + + auto __trail = __first; + auto __lead = __ret; + while (__trail != __ret) { + if (__lead == __last) { + _VSTD::move(__first, __trail, __ret); + return __ret; + } + ++__trail; + ++__lead; + } + + _ForwardIterator __mid = __first; + while (true) { + if (__lead == __last) { + __trail = _VSTD::move(__mid, __ret, __trail); + _VSTD::move(__first, __mid, __trail); + return __ret; + } + swap(*__mid, *__trail); + ++__mid; + ++__trail; + ++__lead; + if (__mid == __ret) { + __mid = __first; + } + } + } +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SHIFT_RIGHT_H diff --git a/lib/libcxx/include/__algorithm/shuffle.h b/lib/libcxx/include/__algorithm/shuffle.h new file mode 100644 index 0000000..6fee88c --- /dev/null +++ b/lib/libcxx/include/__algorithm/shuffle.h @@ -0,0 +1,174 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SHUFFLE_H +#define _LIBCPP___ALGORITHM_SHUFFLE_H + +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__random/uniform_int_distribution.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/swap.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +class _LIBCPP_EXPORTED_FROM_ABI __libcpp_debug_randomizer { +public: + _LIBCPP_HIDE_FROM_ABI __libcpp_debug_randomizer() { + __state_ = __seed(); + __inc_ = __state_ + 0xda3e39cb94b95bdbULL; + __inc_ = (__inc_ << 1) | 1; + } + typedef uint_fast32_t result_type; + + static const result_type _Min = 0; + static const result_type _Max = 0xFFFFFFFF; + + _LIBCPP_HIDE_FROM_ABI result_type operator()() { + uint_fast64_t __oldstate = __state_; + __state_ = __oldstate * 6364136223846793005ULL + __inc_; + return __oldstate >> 32; + } + + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR result_type min() { return _Min; } + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR result_type max() { return _Max; } + +private: + uint_fast64_t __state_; + uint_fast64_t __inc_; + _LIBCPP_HIDE_FROM_ABI static uint_fast64_t __seed() { +#ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY_SEED + return _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY_SEED; +#else + static char __x; + return reinterpret_cast(&__x); +#endif + } +}; + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE) \ + || defined(_LIBCPP_BUILDING_LIBRARY) +class _LIBCPP_EXPORTED_FROM_ABI __rs_default; + +_LIBCPP_EXPORTED_FROM_ABI __rs_default __rs_get(); + +class _LIBCPP_EXPORTED_FROM_ABI __rs_default +{ + static unsigned __c_; + + __rs_default(); +public: + typedef uint_fast32_t result_type; + + static const result_type _Min = 0; + static const result_type _Max = 0xFFFFFFFF; + + __rs_default(const __rs_default&); + ~__rs_default(); + + result_type operator()(); + + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR result_type min() {return _Min;} + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR result_type max() {return _Max;} + + friend _LIBCPP_EXPORTED_FROM_ABI __rs_default __rs_get(); +}; + +_LIBCPP_EXPORTED_FROM_ABI __rs_default __rs_get(); + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_IN_CXX14 void +random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last) +{ + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef uniform_int_distribution _Dp; + typedef typename _Dp::param_type _Pp; + difference_type __d = __last - __first; + if (__d > 1) + { + _Dp __uid; + __rs_default __g = __rs_get(); + for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d) + { + difference_type __i = __uid(__g, _Pp(0, __d)); + if (__i != difference_type(0)) + swap(*__first, *(__first + __i)); + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_IN_CXX14 void +random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last, +#ifndef _LIBCPP_CXX03_LANG + _RandomNumberGenerator&& __rand) +#else + _RandomNumberGenerator& __rand) +#endif +{ + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + difference_type __d = __last - __first; + if (__d > 1) + { + for (--__last; __first < __last; ++__first, (void) --__d) + { + difference_type __i = __rand(__d); + if (__i != difference_type(0)) + swap(*__first, *(__first + __i)); + } + } +} +#endif + +template +_LIBCPP_HIDE_FROM_ABI _RandomAccessIterator __shuffle( + _RandomAccessIterator __first, _Sentinel __last_sentinel, _UniformRandomNumberGenerator&& __g) { + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef uniform_int_distribution _Dp; + typedef typename _Dp::param_type _Pp; + + auto __original_last = _IterOps<_AlgPolicy>::next(__first, __last_sentinel); + auto __last = __original_last; + difference_type __d = __last - __first; + if (__d > 1) + { + _Dp __uid; + for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d) + { + difference_type __i = __uid(__g, _Pp(0, __d)); + if (__i != difference_type(0)) + _IterOps<_AlgPolicy>::iter_swap(__first, __first + __i); + } + } + + return __original_last; +} + +template +_LIBCPP_HIDE_FROM_ABI void +shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last, _UniformRandomNumberGenerator&& __g) { + (void)std::__shuffle<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), std::forward<_UniformRandomNumberGenerator>(__g)); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_SHUFFLE_H diff --git a/lib/libcxx/include/__algorithm/sift_down.h b/lib/libcxx/include/__algorithm/sift_down.h new file mode 100644 index 0000000..20f0b02 --- /dev/null +++ b/lib/libcxx/include/__algorithm/sift_down.h @@ -0,0 +1,119 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SIFT_DOWN_H +#define _LIBCPP___ALGORITHM_SIFT_DOWN_H + +#include <__algorithm/iterator_operations.h> +#include <__assert> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void +__sift_down(_RandomAccessIterator __first, _Compare&& __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len, + _RandomAccessIterator __start) +{ + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + // left-child of __start is at 2 * __start + 1 + // right-child of __start is at 2 * __start + 2 + difference_type __child = __start - __first; + + if (__len < 2 || (__len - 2) / 2 < __child) + return; + + __child = 2 * __child + 1; + _RandomAccessIterator __child_i = __first + __child; + + if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + difference_type(1)))) { + // right-child exists and is greater than left-child + ++__child_i; + ++__child; + } + + // check if we are in heap-order + if (__comp(*__child_i, *__start)) + // we are, __start is larger than its largest child + return; + + value_type __top(_Ops::__iter_move(__start)); + do + { + // we are not in heap-order, swap the parent with its largest child + *__start = _Ops::__iter_move(__child_i); + __start = __child_i; + + if ((__len - 2) / 2 < __child) + break; + + // recompute the child based off of the updated parent + __child = 2 * __child + 1; + __child_i = __first + __child; + + if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + difference_type(1)))) { + // right-child exists and is greater than left-child + ++__child_i; + ++__child; + } + + // check if we are in heap-order + } while (!__comp(*__child_i, __top)); + *__start = _VSTD::move(__top); +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _RandomAccessIterator +__floyd_sift_down(_RandomAccessIterator __first, _Compare&& __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len) +{ + using difference_type = typename iterator_traits<_RandomAccessIterator>::difference_type; + _LIBCPP_ASSERT_UNCATEGORIZED(__len >= 2, "shouldn't be called unless __len >= 2"); + + _RandomAccessIterator __hole = __first; + _RandomAccessIterator __child_i = __first; + difference_type __child = 0; + + while (true) { + __child_i += difference_type(__child + 1); + __child = 2 * __child + 1; + + if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + difference_type(1)))) { + // right-child exists and is greater than left-child + ++__child_i; + ++__child; + } + + // swap __hole with its largest child + *__hole = _IterOps<_AlgPolicy>::__iter_move(__child_i); + __hole = __child_i; + + // if __hole is now a leaf, we're done + if (__child > (__len - 2) / 2) + return __hole; + } +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_SIFT_DOWN_H diff --git a/lib/libcxx/include/__algorithm/sort.h b/lib/libcxx/include/__algorithm/sort.h new file mode 100644 index 0000000..3b594fa --- /dev/null +++ b/lib/libcxx/include/__algorithm/sort.h @@ -0,0 +1,965 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SORT_H +#define _LIBCPP___ALGORITHM_SORT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iter_swap.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/min_element.h> +#include <__algorithm/partial_sort.h> +#include <__algorithm/unwrap_iter.h> +#include <__assert> +#include <__bit/blsr.h> +#include <__bit/countl.h> +#include <__bit/countr.h> +#include <__config> +#include <__debug_utils/randomize_range.h> +#include <__debug_utils/strict_weak_ordering_check.h> +#include <__functional/operations.h> +#include <__functional/ranges_operations.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/conditional.h> +#include <__type_traits/disjunction.h> +#include <__type_traits/is_arithmetic.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// stable, 2-3 compares, 0-2 swaps + +template +_LIBCPP_HIDE_FROM_ABI +_LIBCPP_CONSTEXPR_SINCE_CXX14 unsigned __sort3(_ForwardIterator __x, _ForwardIterator __y, _ForwardIterator __z, + _Compare __c) { + using _Ops = _IterOps<_AlgPolicy>; + + unsigned __r = 0; + if (!__c(*__y, *__x)) // if x <= y + { + if (!__c(*__z, *__y)) // if y <= z + return __r; // x <= y && y <= z + // x <= y && y > z + _Ops::iter_swap(__y, __z); // x <= z && y < z + __r = 1; + if (__c(*__y, *__x)) // if x > y + { + _Ops::iter_swap(__x, __y); // x < y && y <= z + __r = 2; + } + return __r; // x <= y && y < z + } + if (__c(*__z, *__y)) // x > y, if y > z + { + _Ops::iter_swap(__x, __z); // x < y && y < z + __r = 1; + return __r; + } + _Ops::iter_swap(__x, __y); // x > y && y <= z + __r = 1; // x < y && x <= z + if (__c(*__z, *__y)) // if y > z + { + _Ops::iter_swap(__y, __z); // x <= y && y < z + __r = 2; + } + return __r; +} // x <= y && y <= z + +// stable, 3-6 compares, 0-5 swaps + +template +_LIBCPP_HIDE_FROM_ABI +void __sort4(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3, _ForwardIterator __x4, + _Compare __c) { + using _Ops = _IterOps<_AlgPolicy>; + std::__sort3<_AlgPolicy, _Compare>(__x1, __x2, __x3, __c); + if (__c(*__x4, *__x3)) { + _Ops::iter_swap(__x3, __x4); + if (__c(*__x3, *__x2)) { + _Ops::iter_swap(__x2, __x3); + if (__c(*__x2, *__x1)) { + _Ops::iter_swap(__x1, __x2); + } + } + } +} + +// stable, 4-10 compares, 0-9 swaps + +template +_LIBCPP_HIDE_FROM_ABI void __sort5(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3, + _ForwardIterator __x4, _ForwardIterator __x5, _Comp __comp) { + using _Ops = _IterOps<_AlgPolicy>; + + std::__sort4<_AlgPolicy, _Comp>(__x1, __x2, __x3, __x4, __comp); + if (__comp(*__x5, *__x4)) { + _Ops::iter_swap(__x4, __x5); + if (__comp(*__x4, *__x3)) { + _Ops::iter_swap(__x3, __x4); + if (__comp(*__x3, *__x2)) { + _Ops::iter_swap(__x2, __x3); + if (__comp(*__x2, *__x1)) { + _Ops::iter_swap(__x1, __x2); + } + } + } + } +} + +// The comparator being simple is a prerequisite for using the branchless optimization. +template +struct __is_simple_comparator : false_type {}; +template <> +struct __is_simple_comparator<__less<>&> : true_type {}; +template +struct __is_simple_comparator&> : true_type {}; +template +struct __is_simple_comparator&> : true_type {}; +#if _LIBCPP_STD_VER >= 20 +template <> +struct __is_simple_comparator : true_type {}; +template <> +struct __is_simple_comparator : true_type {}; +#endif + +template ::value_type> +using __use_branchless_sort = + integral_constant::value && sizeof(_Tp) <= sizeof(void*) && + is_arithmetic<_Tp>::value && __is_simple_comparator<_Compare>::value>; + +namespace __detail { + +// Size in bits for the bitset in use. +enum { __block_size = sizeof(uint64_t) * 8 }; + +} // namespace __detail + +// Ensures that __c(*__x, *__y) is true by swapping *__x and *__y if necessary. +template +inline _LIBCPP_HIDE_FROM_ABI void __cond_swap(_RandomAccessIterator __x, _RandomAccessIterator __y, _Compare __c) { + // Note: this function behaves correctly even with proxy iterators (because it relies on `value_type`). + using value_type = typename iterator_traits<_RandomAccessIterator>::value_type; + bool __r = __c(*__x, *__y); + value_type __tmp = __r ? *__x : *__y; + *__y = __r ? *__y : *__x; + *__x = __tmp; +} + +// Ensures that *__x, *__y and *__z are ordered according to the comparator __c, +// under the assumption that *__y and *__z are already ordered. +template +inline _LIBCPP_HIDE_FROM_ABI void __partially_sorted_swap(_RandomAccessIterator __x, _RandomAccessIterator __y, + _RandomAccessIterator __z, _Compare __c) { + // Note: this function behaves correctly even with proxy iterators (because it relies on `value_type`). + using value_type = typename iterator_traits<_RandomAccessIterator>::value_type; + bool __r = __c(*__z, *__x); + value_type __tmp = __r ? *__z : *__x; + *__z = __r ? *__x : *__z; + __r = __c(__tmp, *__y); + *__x = __r ? *__x : *__y; + *__y = __r ? *__y : __tmp; +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t<__use_branchless_sort<_Compare, _RandomAccessIterator>::value, void> +__sort3_maybe_branchless(_RandomAccessIterator __x1, _RandomAccessIterator __x2, _RandomAccessIterator __x3, + _Compare __c) { + std::__cond_swap<_Compare>(__x2, __x3, __c); + std::__partially_sorted_swap<_Compare>(__x1, __x2, __x3, __c); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t::value, void> +__sort3_maybe_branchless(_RandomAccessIterator __x1, _RandomAccessIterator __x2, _RandomAccessIterator __x3, + _Compare __c) { + std::__sort3<_AlgPolicy, _Compare>(__x1, __x2, __x3, __c); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t<__use_branchless_sort<_Compare, _RandomAccessIterator>::value, void> +__sort4_maybe_branchless(_RandomAccessIterator __x1, _RandomAccessIterator __x2, _RandomAccessIterator __x3, + _RandomAccessIterator __x4, _Compare __c) { + std::__cond_swap<_Compare>(__x1, __x3, __c); + std::__cond_swap<_Compare>(__x2, __x4, __c); + std::__cond_swap<_Compare>(__x1, __x2, __c); + std::__cond_swap<_Compare>(__x3, __x4, __c); + std::__cond_swap<_Compare>(__x2, __x3, __c); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t::value, void> +__sort4_maybe_branchless(_RandomAccessIterator __x1, _RandomAccessIterator __x2, _RandomAccessIterator __x3, + _RandomAccessIterator __x4, _Compare __c) { + std::__sort4<_AlgPolicy, _Compare>(__x1, __x2, __x3, __x4, __c); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t<__use_branchless_sort<_Compare, _RandomAccessIterator>::value, void> +__sort5_maybe_branchless( + _RandomAccessIterator __x1, + _RandomAccessIterator __x2, + _RandomAccessIterator __x3, + _RandomAccessIterator __x4, + _RandomAccessIterator __x5, + _Compare __c) { + std::__cond_swap<_Compare>(__x1, __x2, __c); + std::__cond_swap<_Compare>(__x4, __x5, __c); + std::__partially_sorted_swap<_Compare>(__x3, __x4, __x5, __c); + std::__cond_swap<_Compare>(__x2, __x5, __c); + std::__partially_sorted_swap<_Compare>(__x1, __x3, __x4, __c); + std::__partially_sorted_swap<_Compare>(__x2, __x3, __x4, __c); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t::value, void> +__sort5_maybe_branchless(_RandomAccessIterator __x1, _RandomAccessIterator __x2, _RandomAccessIterator __x3, + _RandomAccessIterator __x4, _RandomAccessIterator __x5, _Compare __c) { + std::__sort5<_AlgPolicy, _Compare, _RandomAccessIterator>( + std::move(__x1), std::move(__x2), std::move(__x3), std::move(__x4), std::move(__x5), __c); +} + +// Assumes size > 0 +template +_LIBCPP_HIDE_FROM_ABI +_LIBCPP_CONSTEXPR_SINCE_CXX14 void __selection_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, + _Compare __comp) { + _BidirectionalIterator __lm1 = __last; + for (--__lm1; __first != __lm1; ++__first) { + _BidirectionalIterator __i = std::__min_element<_Compare>(__first, __last, __comp); + if (__i != __first) + _IterOps<_AlgPolicy>::iter_swap(__first, __i); + } +} + +// Sort the iterator range [__first, __last) using the comparator __comp using +// the insertion sort algorithm. +template +_LIBCPP_HIDE_FROM_ABI +void __insertion_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + if (__first == __last) + return; + _BidirectionalIterator __i = __first; + for (++__i; __i != __last; ++__i) { + _BidirectionalIterator __j = __i; + --__j; + if (__comp(*__i, *__j)) { + value_type __t(_Ops::__iter_move(__i)); + _BidirectionalIterator __k = __j; + __j = __i; + do { + *__j = _Ops::__iter_move(__k); + __j = __k; + } while (__j != __first && __comp(__t, *--__k)); + *__j = std::move(__t); + } + } +} + +// Sort the iterator range [__first, __last) using the comparator __comp using +// the insertion sort algorithm. Insertion sort has two loops, outer and inner. +// The implementation below has no bounds check (unguarded) for the inner loop. +// Assumes that there is an element in the position (__first - 1) and that each +// element in the input range is greater or equal to the element at __first - 1. +template +_LIBCPP_HIDE_FROM_ABI void +__insertion_sort_unguarded(_RandomAccessIterator const __first, _RandomAccessIterator __last, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + if (__first == __last) + return; + const _RandomAccessIterator __leftmost = __first - difference_type(1); (void)__leftmost; // can be unused when assertions are disabled + for (_RandomAccessIterator __i = __first + difference_type(1); __i != __last; ++__i) { + _RandomAccessIterator __j = __i - difference_type(1); + if (__comp(*__i, *__j)) { + value_type __t(_Ops::__iter_move(__i)); + _RandomAccessIterator __k = __j; + __j = __i; + do { + *__j = _Ops::__iter_move(__k); + __j = __k; + _LIBCPP_ASSERT_UNCATEGORIZED( + __k != __leftmost, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (__comp(__t, *--__k)); // No need for bounds check due to the assumption stated above. + *__j = std::move(__t); + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI bool __insertion_sort_incomplete( + _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp) { + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + switch (__last - __first) { + case 0: + case 1: + return true; + case 2: + if (__comp(*--__last, *__first)) + _Ops::iter_swap(__first, __last); + return true; + case 3: + std::__sort3_maybe_branchless<_AlgPolicy, _Comp>(__first, __first + difference_type(1), --__last, __comp); + return true; + case 4: + std::__sort4_maybe_branchless<_AlgPolicy, _Comp>( + __first, __first + difference_type(1), __first + difference_type(2), --__last, __comp); + return true; + case 5: + std::__sort5_maybe_branchless<_AlgPolicy, _Comp>( + __first, __first + difference_type(1), __first + difference_type(2), __first + difference_type(3), + --__last, __comp); + return true; + } + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + _RandomAccessIterator __j = __first + difference_type(2); + std::__sort3_maybe_branchless<_AlgPolicy, _Comp>(__first, __first + difference_type(1), __j, __comp); + const unsigned __limit = 8; + unsigned __count = 0; + for (_RandomAccessIterator __i = __j + difference_type(1); __i != __last; ++__i) { + if (__comp(*__i, *__j)) { + value_type __t(_Ops::__iter_move(__i)); + _RandomAccessIterator __k = __j; + __j = __i; + do { + *__j = _Ops::__iter_move(__k); + __j = __k; + } while (__j != __first && __comp(__t, *--__k)); + *__j = std::move(__t); + if (++__count == __limit) + return ++__i == __last; + } + __j = __i; + } + return true; +} + +template +inline _LIBCPP_HIDE_FROM_ABI void __swap_bitmap_pos( + _RandomAccessIterator __first, _RandomAccessIterator __last, uint64_t& __left_bitset, uint64_t& __right_bitset) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type difference_type; + // Swap one pair on each iteration as long as both bitsets have at least one + // element for swapping. + while (__left_bitset != 0 && __right_bitset != 0) { + difference_type __tz_left = __libcpp_ctz(__left_bitset); + __left_bitset = __libcpp_blsr(__left_bitset); + difference_type __tz_right = __libcpp_ctz(__right_bitset); + __right_bitset = __libcpp_blsr(__right_bitset); + _Ops::iter_swap(__first + __tz_left, __last - __tz_right); + } +} + +template ::value_type> +inline _LIBCPP_HIDE_FROM_ABI void +__populate_left_bitset(_RandomAccessIterator __first, _Compare __comp, _ValueType& __pivot, uint64_t& __left_bitset) { + // Possible vectorization. With a proper "-march" flag, the following loop + // will be compiled into a set of SIMD instructions. + _RandomAccessIterator __iter = __first; + for (int __j = 0; __j < __detail::__block_size;) { + bool __comp_result = !__comp(*__iter, __pivot); + __left_bitset |= (static_cast(__comp_result) << __j); + __j++; + ++__iter; + } +} + +template ::value_type> +inline _LIBCPP_HIDE_FROM_ABI void +__populate_right_bitset(_RandomAccessIterator __lm1, _Compare __comp, _ValueType& __pivot, uint64_t& __right_bitset) { + // Possible vectorization. With a proper "-march" flag, the following loop + // will be compiled into a set of SIMD instructions. + _RandomAccessIterator __iter = __lm1; + for (int __j = 0; __j < __detail::__block_size;) { + bool __comp_result = __comp(*__iter, __pivot); + __right_bitset |= (static_cast(__comp_result) << __j); + __j++; + --__iter; + } +} + +template ::value_type> +inline _LIBCPP_HIDE_FROM_ABI void __bitset_partition_partial_blocks( + _RandomAccessIterator& __first, + _RandomAccessIterator& __lm1, + _Compare __comp, + _ValueType& __pivot, + uint64_t& __left_bitset, + uint64_t& __right_bitset) { + typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type difference_type; + difference_type __remaining_len = __lm1 - __first + 1; + difference_type __l_size; + difference_type __r_size; + if (__left_bitset == 0 && __right_bitset == 0) { + __l_size = __remaining_len / 2; + __r_size = __remaining_len - __l_size; + } else if (__left_bitset == 0) { + // We know at least one side is a full block. + __l_size = __remaining_len - __detail::__block_size; + __r_size = __detail::__block_size; + } else { // if (__right_bitset == 0) + __l_size = __detail::__block_size; + __r_size = __remaining_len - __detail::__block_size; + } + // Record the comparison outcomes for the elements currently on the left side. + if (__left_bitset == 0) { + _RandomAccessIterator __iter = __first; + for (int __j = 0; __j < __l_size; __j++) { + bool __comp_result = !__comp(*__iter, __pivot); + __left_bitset |= (static_cast(__comp_result) << __j); + ++__iter; + } + } + // Record the comparison outcomes for the elements currently on the right + // side. + if (__right_bitset == 0) { + _RandomAccessIterator __iter = __lm1; + for (int __j = 0; __j < __r_size; __j++) { + bool __comp_result = __comp(*__iter, __pivot); + __right_bitset |= (static_cast(__comp_result) << __j); + --__iter; + } + } + std::__swap_bitmap_pos<_AlgPolicy, _RandomAccessIterator>(__first, __lm1, __left_bitset, __right_bitset); + __first += (__left_bitset == 0) ? __l_size : 0; + __lm1 -= (__right_bitset == 0) ? __r_size : 0; +} + +template +inline _LIBCPP_HIDE_FROM_ABI void __swap_bitmap_pos_within( + _RandomAccessIterator& __first, _RandomAccessIterator& __lm1, uint64_t& __left_bitset, uint64_t& __right_bitset) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type difference_type; + if (__left_bitset) { + // Swap within the left side. Need to find set positions in the reverse + // order. + while (__left_bitset != 0) { + difference_type __tz_left = __detail::__block_size - 1 - __libcpp_clz(__left_bitset); + __left_bitset &= (static_cast(1) << __tz_left) - 1; + _RandomAccessIterator __it = __first + __tz_left; + if (__it != __lm1) { + _Ops::iter_swap(__it, __lm1); + } + --__lm1; + } + __first = __lm1 + difference_type(1); + } else if (__right_bitset) { + // Swap within the right side. Need to find set positions in the reverse + // order. + while (__right_bitset != 0) { + difference_type __tz_right = __detail::__block_size - 1 - __libcpp_clz(__right_bitset); + __right_bitset &= (static_cast(1) << __tz_right) - 1; + _RandomAccessIterator __it = __lm1 - __tz_right; + if (__it != __first) { + _Ops::iter_swap(__it, __first); + } + ++__first; + } + } +} + +// Partition [__first, __last) using the comparator __comp. *__first has the +// chosen pivot. Elements that are equivalent are kept to the left of the +// pivot. Returns the iterator for the pivot and a bool value which is true if +// the provided range is already sorted, false otherwise. We assume that the +// length of the range is at least three elements. +// +// __bitset_partition uses bitsets for storing outcomes of the comparisons +// between the pivot and other elements. +template +_LIBCPP_HIDE_FROM_ABI std::pair<_RandomAccessIterator, bool> +__bitset_partition(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename std::iterator_traits<_RandomAccessIterator>::value_type value_type; + typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type difference_type; + _LIBCPP_ASSERT_UNCATEGORIZED(__last - __first >= difference_type(3), ""); + const _RandomAccessIterator __begin = __first; // used for bounds checking, those are not moved around + const _RandomAccessIterator __end = __last; (void)__end; // + + value_type __pivot(_Ops::__iter_move(__first)); + // Find the first element greater than the pivot. + if (__comp(__pivot, *(__last - difference_type(1)))) { + // Not guarded since we know the last element is greater than the pivot. + do { + ++__first; + _LIBCPP_ASSERT_UNCATEGORIZED( + __first != __end, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (!__comp(__pivot, *__first)); + } else { + while (++__first < __last && !__comp(__pivot, *__first)) { + } + } + // Find the last element less than or equal to the pivot. + if (__first < __last) { + // It will be always guarded because __introsort will do the median-of-three + // before calling this. + do { + _LIBCPP_ASSERT_UNCATEGORIZED( + __last != __begin, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + --__last; + } while (__comp(__pivot, *__last)); + } + // If the first element greater than the pivot is at or after the + // last element less than or equal to the pivot, then we have covered the + // entire range without swapping elements. This implies the range is already + // partitioned. + bool __already_partitioned = __first >= __last; + if (!__already_partitioned) { + _Ops::iter_swap(__first, __last); + ++__first; + } + + // In [__first, __last) __last is not inclusive. From now on, it uses last + // minus one to be inclusive on both sides. + _RandomAccessIterator __lm1 = __last - difference_type(1); + uint64_t __left_bitset = 0; + uint64_t __right_bitset = 0; + + // Reminder: length = __lm1 - __first + 1. + while (__lm1 - __first >= 2 * __detail::__block_size - 1) { + // Record the comparison outcomes for the elements currently on the left + // side. + if (__left_bitset == 0) + std::__populate_left_bitset<_Compare>(__first, __comp, __pivot, __left_bitset); + // Record the comparison outcomes for the elements currently on the right + // side. + if (__right_bitset == 0) + std::__populate_right_bitset<_Compare>(__lm1, __comp, __pivot, __right_bitset); + // Swap the elements recorded to be the candidates for swapping in the + // bitsets. + std::__swap_bitmap_pos<_AlgPolicy, _RandomAccessIterator>(__first, __lm1, __left_bitset, __right_bitset); + // Only advance the iterator if all the elements that need to be moved to + // other side were moved. + __first += (__left_bitset == 0) ? difference_type(__detail::__block_size) : difference_type(0); + __lm1 -= (__right_bitset == 0) ? difference_type(__detail::__block_size) : difference_type(0); + } + // Now, we have a less-than a block worth of elements on at least one of the + // sides. + std::__bitset_partition_partial_blocks<_AlgPolicy, _Compare>( + __first, __lm1, __comp, __pivot, __left_bitset, __right_bitset); + // At least one the bitsets would be empty. For the non-empty one, we need to + // properly partition the elements that appear within that bitset. + std::__swap_bitmap_pos_within<_AlgPolicy>(__first, __lm1, __left_bitset, __right_bitset); + + // Move the pivot to its correct position. + _RandomAccessIterator __pivot_pos = __first - difference_type(1); + if (__begin != __pivot_pos) { + *__begin = _Ops::__iter_move(__pivot_pos); + } + *__pivot_pos = std::move(__pivot); + return std::make_pair(__pivot_pos, __already_partitioned); +} + +// Partition [__first, __last) using the comparator __comp. *__first has the +// chosen pivot. Elements that are equivalent are kept to the right of the +// pivot. Returns the iterator for the pivot and a bool value which is true if +// the provided range is already sorted, false otherwise. We assume that the +// length of the range is at least three elements. +template +_LIBCPP_HIDE_FROM_ABI std::pair<_RandomAccessIterator, bool> +__partition_with_equals_on_right(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef typename std::iterator_traits<_RandomAccessIterator>::value_type value_type; + _LIBCPP_ASSERT_UNCATEGORIZED(__last - __first >= difference_type(3), ""); + const _RandomAccessIterator __begin = __first; // used for bounds checking, those are not moved around + const _RandomAccessIterator __end = __last; (void)__end; // + value_type __pivot(_Ops::__iter_move(__first)); + // Find the first element greater or equal to the pivot. It will be always + // guarded because __introsort will do the median-of-three before calling + // this. + do { + ++__first; + _LIBCPP_ASSERT_UNCATEGORIZED( + __first != __end, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (__comp(*__first, __pivot)); + + // Find the last element less than the pivot. + if (__begin == __first - difference_type(1)) { + while (__first < __last && !__comp(*--__last, __pivot)) + ; + } else { + // Guarded. + do { + _LIBCPP_ASSERT_UNCATEGORIZED( + __last != __begin, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + --__last; + } while (!__comp(*__last, __pivot)); + } + + // If the first element greater than or equal to the pivot is at or after the + // last element less than the pivot, then we have covered the entire range + // without swapping elements. This implies the range is already partitioned. + bool __already_partitioned = __first >= __last; + // Go through the remaining elements. Swap pairs of elements (one to the + // right of the pivot and the other to left of the pivot) that are not on the + // correct side of the pivot. + while (__first < __last) { + _Ops::iter_swap(__first, __last); + do { + ++__first; + _LIBCPP_ASSERT_UNCATEGORIZED( + __first != __end, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (__comp(*__first, __pivot)); + do { + _LIBCPP_ASSERT_UNCATEGORIZED( + __last != __begin, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + --__last; + } while (!__comp(*__last, __pivot)); + } + // Move the pivot to its correct position. + _RandomAccessIterator __pivot_pos = __first - difference_type(1); + if (__begin != __pivot_pos) { + *__begin = _Ops::__iter_move(__pivot_pos); + } + *__pivot_pos = std::move(__pivot); + return std::make_pair(__pivot_pos, __already_partitioned); +} + +// Similar to the above function. Elements equivalent to the pivot are put to +// the left of the pivot. Returns the iterator to the pivot element. +template +_LIBCPP_HIDE_FROM_ABI _RandomAccessIterator +__partition_with_equals_on_left(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + typedef typename std::iterator_traits<_RandomAccessIterator>::value_type value_type; + // TODO(LLVM18): Make __begin const, see https://reviews.llvm.org/D147089#4349748 + _RandomAccessIterator __begin = __first; // used for bounds checking, those are not moved around + const _RandomAccessIterator __end = __last; (void)__end; // + value_type __pivot(_Ops::__iter_move(__first)); + if (__comp(__pivot, *(__last - difference_type(1)))) { + // Guarded. + do { + ++__first; + _LIBCPP_ASSERT_UNCATEGORIZED( + __first != __end, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (!__comp(__pivot, *__first)); + } else { + while (++__first < __last && !__comp(__pivot, *__first)) { + } + } + + if (__first < __last) { + // It will be always guarded because __introsort will do the + // median-of-three before calling this. + do { + _LIBCPP_ASSERT_UNCATEGORIZED( + __last != __begin, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + --__last; + } while (__comp(__pivot, *__last)); + } + while (__first < __last) { + _Ops::iter_swap(__first, __last); + do { + ++__first; + _LIBCPP_ASSERT_UNCATEGORIZED( + __first != __end, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + } while (!__comp(__pivot, *__first)); + do { + _LIBCPP_ASSERT_UNCATEGORIZED( + __last != __begin, + "Would read out of bounds, does your comparator satisfy the strict-weak ordering requirement?"); + --__last; + } while (__comp(__pivot, *__last)); + } + _RandomAccessIterator __pivot_pos = __first - difference_type(1); + if (__begin != __pivot_pos) { + *__begin = _Ops::__iter_move(__pivot_pos); + } + *__pivot_pos = std::move(__pivot); + return __first; +} + +// The main sorting function. Implements introsort combined with other ideas: +// - option of using block quick sort for partitioning, +// - guarded and unguarded insertion sort for small lengths, +// - Tuckey's ninther technique for computing the pivot, +// - check on whether partition was not required. +// The implementation is partly based on Orson Peters' pattern-defeating +// quicksort, published at: . +template +void __introsort(_RandomAccessIterator __first, + _RandomAccessIterator __last, + _Compare __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __depth, + bool __leftmost = true) { + using _Ops = _IterOps<_AlgPolicy>; + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + using _Comp_ref = __comp_ref_type<_Compare>; + // Upper bound for using insertion sort for sorting. + _LIBCPP_CONSTEXPR difference_type __limit = 24; + // Lower bound for using Tuckey's ninther technique for median computation. + _LIBCPP_CONSTEXPR difference_type __ninther_threshold = 128; + while (true) { + difference_type __len = __last - __first; + switch (__len) { + case 0: + case 1: + return; + case 2: + if (__comp(*--__last, *__first)) + _Ops::iter_swap(__first, __last); + return; + case 3: + std::__sort3_maybe_branchless<_AlgPolicy, _Compare>(__first, __first + difference_type(1), --__last, __comp); + return; + case 4: + std::__sort4_maybe_branchless<_AlgPolicy, _Compare>( + __first, __first + difference_type(1), __first + difference_type(2), --__last, __comp); + return; + case 5: + std::__sort5_maybe_branchless<_AlgPolicy, _Compare>( + __first, __first + difference_type(1), __first + difference_type(2), __first + difference_type(3), + --__last, __comp); + return; + } + // Use insertion sort if the length of the range is below the specified limit. + if (__len < __limit) { + if (__leftmost) { + std::__insertion_sort<_AlgPolicy, _Compare>(__first, __last, __comp); + } else { + std::__insertion_sort_unguarded<_AlgPolicy, _Compare>(__first, __last, __comp); + } + return; + } + if (__depth == 0) { + // Fallback to heap sort as Introsort suggests. + std::__partial_sort<_AlgPolicy, _Compare>(__first, __last, __last, __comp); + return; + } + --__depth; + { + difference_type __half_len = __len / 2; + // Use Tuckey's ninther technique or median of 3 for pivot selection + // depending on the length of the range being sorted. + if (__len > __ninther_threshold) { + std::__sort3<_AlgPolicy, _Compare>(__first, __first + __half_len, __last - difference_type(1), __comp); + std::__sort3<_AlgPolicy, _Compare>( + __first + difference_type(1), __first + (__half_len - 1), __last - difference_type(2), __comp); + std::__sort3<_AlgPolicy, _Compare>( + __first + difference_type(2), __first + (__half_len + 1), __last - difference_type(3), __comp); + std::__sort3<_AlgPolicy, _Compare>( + __first + (__half_len - 1), __first + __half_len, __first + (__half_len + 1), __comp); + _Ops::iter_swap(__first, __first + __half_len); + } else { + std::__sort3<_AlgPolicy, _Compare>(__first + __half_len, __first, __last - difference_type(1), __comp); + } + } + // The elements to the left of the current iterator range are already + // sorted. If the current iterator range to be sorted is not the + // leftmost part of the entire iterator range and the pivot is same as + // the highest element in the range to the left, then we know that all + // the elements in the range [first, pivot] would be equal to the pivot, + // assuming the equal elements are put on the left side when + // partitioned. This also means that we do not need to sort the left + // side of the partition. + if (!__leftmost && !__comp(*(__first - difference_type(1)), *__first)) { + __first = std::__partition_with_equals_on_left<_AlgPolicy, _RandomAccessIterator, _Comp_ref>( + __first, __last, _Comp_ref(__comp)); + continue; + } + // Use bitset partition only if asked for. + auto __ret = + _UseBitSetPartition + ? std::__bitset_partition<_AlgPolicy, _RandomAccessIterator, _Compare>(__first, __last, __comp) + : std::__partition_with_equals_on_right<_AlgPolicy, _RandomAccessIterator, _Compare>(__first, __last, __comp); + _RandomAccessIterator __i = __ret.first; + // [__first, __i) < *__i and *__i <= [__i+1, __last) + // If we were given a perfect partition, see if insertion sort is quick... + if (__ret.second) { + bool __fs = std::__insertion_sort_incomplete<_AlgPolicy, _Compare>(__first, __i, __comp); + if (std::__insertion_sort_incomplete<_AlgPolicy, _Compare>(__i + difference_type(1), __last, __comp)) { + if (__fs) + return; + __last = __i; + continue; + } else { + if (__fs) { + __first = ++__i; + continue; + } + } + } + // Sort the left partiton recursively and the right partition with tail recursion elimination. + std::__introsort<_AlgPolicy, _Compare, _RandomAccessIterator, _UseBitSetPartition>( + __first, __i, __comp, __depth, __leftmost); + __leftmost = false; + __first = ++__i; + } +} + +template +inline _LIBCPP_HIDE_FROM_ABI _Number __log2i(_Number __n) { + if (__n == 0) + return 0; + if (sizeof(__n) <= sizeof(unsigned)) + return sizeof(unsigned) * CHAR_BIT - 1 - __libcpp_clz(static_cast(__n)); + if (sizeof(__n) <= sizeof(unsigned long)) + return sizeof(unsigned long) * CHAR_BIT - 1 - __libcpp_clz(static_cast(__n)); + if (sizeof(__n) <= sizeof(unsigned long long)) + return sizeof(unsigned long long) * CHAR_BIT - 1 - __libcpp_clz(static_cast(__n)); + + _Number __log2 = 0; + while (__n > 1) { + __log2++; + __n >>= 1; + } + return __log2; +} + +template +void __sort(_RandomAccessIterator, _RandomAccessIterator, _Comp); + +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, char*>(char*, char*, __less&); +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, wchar_t*>(wchar_t*, wchar_t*, __less&); +#endif +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, signed char*>(signed char*, signed char*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, unsigned char*>(unsigned char*, unsigned char*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, short*>(short*, short*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, unsigned short*>(unsigned short*, unsigned short*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, int*>(int*, int*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, unsigned*>(unsigned*, unsigned*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, long*>(long*, long*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, unsigned long*>(unsigned long*, unsigned long*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, long long*>(long long*, long long*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, unsigned long long*>(unsigned long long*, unsigned long long*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, float*>(float*, float*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, double*>(double*, double*, __less&); +extern template _LIBCPP_EXPORTED_FROM_ABI void __sort<__less&, long double*>(long double*, long double*, __less&); + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void +__sort_dispatch(_RandomAccessIterator __first, _RandomAccessIterator __last, _Comp& __comp) { + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + difference_type __depth_limit = 2 * std::__log2i(__last - __first); + + // Only use bitset partitioning for arithmetic types. We should also check + // that the default comparator is in use so that we are sure that there are no + // branches in the comparator. + std::__introsort<_AlgPolicy, + _Comp&, + _RandomAccessIterator, + __use_branchless_sort<_Comp, _RandomAccessIterator>::value>( + __first, __last, __comp, __depth_limit); +} + +template +using __is_any_of = _Or...>; + +template +using __sort_is_specialized_in_library = __is_any_of< + _Type, + char, +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + wchar_t, +#endif + signed char, + unsigned char, + short, + unsigned short, + int, + unsigned int, + long, + unsigned long, + long long, + unsigned long long, + float, + double, + long double>; + +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI void __sort_dispatch(_Type* __first, _Type* __last, __less<>&) { + __less<_Type> __comp; + std::__sort<__less<_Type>&, _Type*>(__first, __last, __comp); +} + +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI void __sort_dispatch(_Type* __first, _Type* __last, less<_Type>&) { + __less<_Type> __comp; + std::__sort<__less<_Type>&, _Type*>(__first, __last, __comp); +} + +#if _LIBCPP_STD_VER >= 14 +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI void __sort_dispatch(_Type* __first, _Type* __last, less<>&) { + __less<_Type> __comp; + std::__sort<__less<_Type>&, _Type*>(__first, __last, __comp); +} +#endif + +#if _LIBCPP_STD_VER >= 20 +template ::value, int> = 0> +_LIBCPP_HIDE_FROM_ABI void __sort_dispatch(_Type* __first, _Type* __last, ranges::less&) { + __less<_Type> __comp; + std::__sort<__less<_Type>&, _Type*>(__first, __last, __comp); +} +#endif + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void __sort_impl(_RandomAccessIterator __first, _RandomAccessIterator __last, _Comp& __comp) { + std::__debug_randomize_range<_AlgPolicy>(__first, __last); + + if (__libcpp_is_constant_evaluated()) { + std::__partial_sort<_AlgPolicy>( + std::__unwrap_iter(__first), std::__unwrap_iter(__last), std::__unwrap_iter(__last), __comp); + } else { + std::__sort_dispatch<_AlgPolicy>(std::__unwrap_iter(__first), std::__unwrap_iter(__last), __comp); + } + std::__check_strict_weak_ordering_sorted(std::__unwrap_iter(__first), std::__unwrap_iter(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp) { + std::__sort_impl<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void sort(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::sort(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SORT_H diff --git a/lib/libcxx/include/__algorithm/sort_heap.h b/lib/libcxx/include/__algorithm/sort_heap.h new file mode 100644 index 0000000..a82926e --- /dev/null +++ b/lib/libcxx/include/__algorithm/sort_heap.h @@ -0,0 +1,58 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SORT_HEAP_H +#define _LIBCPP___ALGORITHM_SORT_HEAP_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/pop_heap.h> +#include <__config> +#include <__debug_utils/strict_weak_ordering_check.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare&& __comp) { + _RandomAccessIterator __saved_last = __last; + __comp_ref_type<_Compare> __comp_ref = __comp; + + using difference_type = typename iterator_traits<_RandomAccessIterator>::difference_type; + for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n) + std::__pop_heap<_AlgPolicy>(__first, __last, __comp_ref, __n); + std::__check_strict_weak_ordering_sorted(__first, __saved_last, __comp_ref); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + static_assert(std::is_copy_constructible<_RandomAccessIterator>::value, "Iterators must be copy constructible."); + static_assert(std::is_copy_assignable<_RandomAccessIterator>::value, "Iterators must be copy assignable."); + + std::__sort_heap<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +void sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::sort_heap(std::move(__first), std::move(__last), __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SORT_HEAP_H diff --git a/lib/libcxx/include/__algorithm/stable_partition.h b/lib/libcxx/include/__algorithm/stable_partition.h new file mode 100644 index 0000000..38fa9ce --- /dev/null +++ b/lib/libcxx/include/__algorithm/stable_partition.h @@ -0,0 +1,329 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_STABLE_PARTITION_H +#define _LIBCPP___ALGORITHM_STABLE_PARTITION_H + +#include <__algorithm/iterator_operations.h> +#include <__algorithm/rotate.h> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__memory/destruct_n.h> +#include <__memory/temporary_buffer.h> +#include <__memory/unique_ptr.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +__stable_partition_impl(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, + _Distance __len, _Pair __p, forward_iterator_tag __fit) +{ + using _Ops = _IterOps<_AlgPolicy>; + + // *__first is known to be false + // __len >= 1 + if (__len == 1) + return __first; + if (__len == 2) + { + _ForwardIterator __m = __first; + if (__pred(*++__m)) + { + _Ops::iter_swap(__first, __m); + return __m; + } + return __first; + } + if (__len <= __p.second) + { // The buffer is big enough to use + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; + __destruct_n __d(0); + unique_ptr __h(__p.first, __d); + // Move the falses into the temporary buffer, and the trues to the front of the line + // Update __first to always point to the end of the trues + value_type* __t = __p.first; + ::new ((void*)__t) value_type(_Ops::__iter_move(__first)); + __d.template __incr(); + ++__t; + _ForwardIterator __i = __first; + while (++__i != __last) + { + if (__pred(*__i)) + { + *__first = _Ops::__iter_move(__i); + ++__first; + } + else + { + ::new ((void*)__t) value_type(_Ops::__iter_move(__i)); + __d.template __incr(); + ++__t; + } + } + // All trues now at start of range, all falses in buffer + // Move falses back into range, but don't mess up __first which points to first false + __i = __first; + for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i) + *__i = _Ops::__iter_move(__t2); + // __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer + return __first; + } + // Else not enough buffer, do in place + // __len >= 3 + _ForwardIterator __m = __first; + _Distance __len2 = __len / 2; // __len2 >= 2 + _Ops::advance(__m, __len2); + // recurse on [__first, __m), *__first know to be false + // F????????????????? + // f m l + _ForwardIterator __first_false = std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + __first, __m, __pred, __len2, __p, __fit); + // TTTFFFFF?????????? + // f ff m l + // recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true + _ForwardIterator __m1 = __m; + _ForwardIterator __second_false = __last; + _Distance __len_half = __len - __len2; + while (__pred(*__m1)) + { + if (++__m1 == __last) + goto __second_half_done; + --__len_half; + } + // TTTFFFFFTTTF?????? + // f ff m m1 l + __second_false = std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + __m1, __last, __pred, __len_half, __p, __fit); +__second_half_done: + // TTTFFFFFTTTTTFFFFF + // f ff m sf l + return std::__rotate<_AlgPolicy>(__first_false, __m, __second_false).first; + // TTTTTTTTFFFFFFFFFF + // | +} + +template +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +__stable_partition_impl(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, + forward_iterator_tag) +{ + typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type; + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; + + const difference_type __alloc_limit = 3; // might want to make this a function of trivial assignment + // Either prove all true and return __first or point to first false + while (true) + { + if (__first == __last) + return __first; + if (!__pred(*__first)) + break; + ++__first; + } + // We now have a reduced range [__first, __last) + // *__first is known to be false + difference_type __len = _IterOps<_AlgPolicy>::distance(__first, __last); + pair __p(0, 0); + unique_ptr __h; + if (__len >= __alloc_limit) + { +// TODO: Remove the use of std::get_temporary_buffer +_LIBCPP_SUPPRESS_DEPRECATED_PUSH + __p = _VSTD::get_temporary_buffer(__len); +_LIBCPP_SUPPRESS_DEPRECATED_POP + __h.reset(__p.first); + } + return std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + std::move(__first), std::move(__last), __pred, __len, __p, forward_iterator_tag()); +} + +template +_BidirectionalIterator +__stable_partition_impl(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred, + _Distance __len, _Pair __p, bidirectional_iterator_tag __bit) +{ + using _Ops = _IterOps<_AlgPolicy>; + + // *__first is known to be false + // *__last is known to be true + // __len >= 2 + if (__len == 2) + { + _Ops::iter_swap(__first, __last); + return __last; + } + if (__len == 3) + { + _BidirectionalIterator __m = __first; + if (__pred(*++__m)) + { + _Ops::iter_swap(__first, __m); + _Ops::iter_swap(__m, __last); + return __last; + } + _Ops::iter_swap(__m, __last); + _Ops::iter_swap(__first, __m); + return __m; + } + if (__len <= __p.second) + { // The buffer is big enough to use + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + __destruct_n __d(0); + unique_ptr __h(__p.first, __d); + // Move the falses into the temporary buffer, and the trues to the front of the line + // Update __first to always point to the end of the trues + value_type* __t = __p.first; + ::new ((void*)__t) value_type(_Ops::__iter_move(__first)); + __d.template __incr(); + ++__t; + _BidirectionalIterator __i = __first; + while (++__i != __last) + { + if (__pred(*__i)) + { + *__first = _Ops::__iter_move(__i); + ++__first; + } + else + { + ::new ((void*)__t) value_type(_Ops::__iter_move(__i)); + __d.template __incr(); + ++__t; + } + } + // move *__last, known to be true + *__first = _Ops::__iter_move(__i); + __i = ++__first; + // All trues now at start of range, all falses in buffer + // Move falses back into range, but don't mess up __first which points to first false + for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i) + *__i = _Ops::__iter_move(__t2); + // __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer + return __first; + } + // Else not enough buffer, do in place + // __len >= 4 + _BidirectionalIterator __m = __first; + _Distance __len2 = __len / 2; // __len2 >= 2 + _Ops::advance(__m, __len2); + // recurse on [__first, __m-1], except reduce __m-1 until *(__m-1) is true, *__first know to be false + // F????????????????T + // f m l + _BidirectionalIterator __m1 = __m; + _BidirectionalIterator __first_false = __first; + _Distance __len_half = __len2; + while (!__pred(*--__m1)) + { + if (__m1 == __first) + goto __first_half_done; + --__len_half; + } + // F???TFFF?????????T + // f m1 m l + __first_false = std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + __first, __m1, __pred, __len_half, __p, __bit); +__first_half_done: + // TTTFFFFF?????????T + // f ff m l + // recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true + __m1 = __m; + _BidirectionalIterator __second_false = __last; + ++__second_false; + __len_half = __len - __len2; + while (__pred(*__m1)) + { + if (++__m1 == __last) + goto __second_half_done; + --__len_half; + } + // TTTFFFFFTTTF?????T + // f ff m m1 l + __second_false = std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + __m1, __last, __pred, __len_half, __p, __bit); +__second_half_done: + // TTTFFFFFTTTTTFFFFF + // f ff m sf l + return std::__rotate<_AlgPolicy>(__first_false, __m, __second_false).first; + // TTTTTTTTFFFFFFFFFF + // | +} + +template +_LIBCPP_HIDE_FROM_ABI _BidirectionalIterator +__stable_partition_impl(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred, + bidirectional_iterator_tag) +{ + typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type; + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + const difference_type __alloc_limit = 4; // might want to make this a function of trivial assignment + // Either prove all true and return __first or point to first false + while (true) + { + if (__first == __last) + return __first; + if (!__pred(*__first)) + break; + ++__first; + } + // __first points to first false, everything prior to __first is already set. + // Either prove [__first, __last) is all false and return __first, or point __last to last true + do + { + if (__first == --__last) + return __first; + } while (!__pred(*__last)); + // We now have a reduced range [__first, __last] + // *__first is known to be false + // *__last is known to be true + // __len >= 2 + difference_type __len = _IterOps<_AlgPolicy>::distance(__first, __last) + 1; + pair __p(0, 0); + unique_ptr __h; + if (__len >= __alloc_limit) + { +// TODO: Remove the use of std::get_temporary_buffer +_LIBCPP_SUPPRESS_DEPRECATED_PUSH + __p = _VSTD::get_temporary_buffer(__len); +_LIBCPP_SUPPRESS_DEPRECATED_POP + __h.reset(__p.first); + } + return std::__stable_partition_impl<_AlgPolicy, _Predicate&>( + std::move(__first), std::move(__last), __pred, __len, __p, bidirectional_iterator_tag()); +} + +template +_LIBCPP_HIDE_FROM_ABI +_ForwardIterator __stable_partition( + _ForwardIterator __first, _ForwardIterator __last, _Predicate&& __pred, _IterCategory __iter_category) { + return std::__stable_partition_impl<_AlgPolicy, __remove_cvref_t<_Predicate>&>( + std::move(__first), std::move(__last), __pred, __iter_category); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_ForwardIterator +stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) +{ + using _IterCategory = typename iterator_traits<_ForwardIterator>::iterator_category; + return std::__stable_partition<_ClassicAlgPolicy, _Predicate&>( + std::move(__first), std::move(__last), __pred, _IterCategory()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_STABLE_PARTITION_H diff --git a/lib/libcxx/include/__algorithm/stable_sort.h b/lib/libcxx/include/__algorithm/stable_sort.h new file mode 100644 index 0000000..dc24218 --- /dev/null +++ b/lib/libcxx/include/__algorithm/stable_sort.h @@ -0,0 +1,280 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_STABLE_SORT_H +#define _LIBCPP___ALGORITHM_STABLE_SORT_H + +#include <__algorithm/comp.h> +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/inplace_merge.h> +#include <__algorithm/iterator_operations.h> +#include <__algorithm/sort.h> +#include <__config> +#include <__debug_utils/strict_weak_ordering_check.h> +#include <__iterator/iterator_traits.h> +#include <__memory/destruct_n.h> +#include <__memory/temporary_buffer.h> +#include <__memory/unique_ptr.h> +#include <__type_traits/is_trivially_copy_assignable.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI +void __insertion_sort_move(_BidirectionalIterator __first1, _BidirectionalIterator __last1, + typename iterator_traits<_BidirectionalIterator>::value_type* __first2, _Compare __comp) { + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type; + if (__first1 != __last1) { + __destruct_n __d(0); + unique_ptr __h(__first2, __d); + value_type* __last2 = __first2; + ::new ((void*)__last2) value_type(_Ops::__iter_move(__first1)); + __d.template __incr(); + for (++__last2; ++__first1 != __last1; ++__last2) { + value_type* __j2 = __last2; + value_type* __i2 = __j2; + if (__comp(*__first1, *--__i2)) { + ::new ((void*)__j2) value_type(std::move(*__i2)); + __d.template __incr(); + for (--__j2; __i2 != __first2 && __comp(*__first1, *--__i2); --__j2) + *__j2 = std::move(*__i2); + *__j2 = _Ops::__iter_move(__first1); + } else { + ::new ((void*)__j2) value_type(_Ops::__iter_move(__first1)); + __d.template __incr(); + } + } + __h.release(); + } +} + +template +_LIBCPP_HIDE_FROM_ABI void +__merge_move_construct(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, + typename iterator_traits<_InputIterator1>::value_type* __result, _Compare __comp) +{ + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_InputIterator1>::value_type value_type; + __destruct_n __d(0); + unique_ptr __h(__result, __d); + for (; true; ++__result) + { + if (__first1 == __last1) + { + for (; __first2 != __last2; ++__first2, (void) ++__result, __d.template __incr()) + ::new ((void*)__result) value_type(_Ops::__iter_move(__first2)); + __h.release(); + return; + } + if (__first2 == __last2) + { + for (; __first1 != __last1; ++__first1, (void) ++__result, __d.template __incr()) + ::new ((void*)__result) value_type(_Ops::__iter_move(__first1)); + __h.release(); + return; + } + if (__comp(*__first2, *__first1)) + { + ::new ((void*)__result) value_type(_Ops::__iter_move(__first2)); + __d.template __incr(); + ++__first2; + } + else + { + ::new ((void*)__result) value_type(_Ops::__iter_move(__first1)); + __d.template __incr(); + ++__first1; + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI void +__merge_move_assign(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _InputIterator2 __last2, + _OutputIterator __result, _Compare __comp) +{ + using _Ops = _IterOps<_AlgPolicy>; + + for (; __first1 != __last1; ++__result) + { + if (__first2 == __last2) + { + for (; __first1 != __last1; ++__first1, (void) ++__result) + *__result = _Ops::__iter_move(__first1); + return; + } + if (__comp(*__first2, *__first1)) + { + *__result = _Ops::__iter_move(__first2); + ++__first2; + } + else + { + *__result = _Ops::__iter_move(__first1); + ++__first1; + } + } + for (; __first2 != __last2; ++__first2, (void) ++__result) + *__result = _Ops::__iter_move(__first2); +} + +template +void +__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len, + typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size); + +template +void +__stable_sort_move(_RandomAccessIterator __first1, _RandomAccessIterator __last1, _Compare __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len, + typename iterator_traits<_RandomAccessIterator>::value_type* __first2) +{ + using _Ops = _IterOps<_AlgPolicy>; + + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + switch (__len) + { + case 0: + return; + case 1: + ::new ((void*)__first2) value_type(_Ops::__iter_move(__first1)); + return; + case 2: + __destruct_n __d(0); + unique_ptr __h2(__first2, __d); + if (__comp(*--__last1, *__first1)) + { + ::new ((void*)__first2) value_type(_Ops::__iter_move(__last1)); + __d.template __incr(); + ++__first2; + ::new ((void*)__first2) value_type(_Ops::__iter_move(__first1)); + } + else + { + ::new ((void*)__first2) value_type(_Ops::__iter_move(__first1)); + __d.template __incr(); + ++__first2; + ::new ((void*)__first2) value_type(_Ops::__iter_move(__last1)); + } + __h2.release(); + return; + } + if (__len <= 8) + { + std::__insertion_sort_move<_AlgPolicy, _Compare>(__first1, __last1, __first2, __comp); + return; + } + typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2; + _RandomAccessIterator __m = __first1 + __l2; + std::__stable_sort<_AlgPolicy, _Compare>(__first1, __m, __comp, __l2, __first2, __l2); + std::__stable_sort<_AlgPolicy, _Compare>(__m, __last1, __comp, __len - __l2, __first2 + __l2, __len - __l2); + std::__merge_move_construct<_AlgPolicy, _Compare>(__first1, __m, __m, __last1, __first2, __comp); +} + +template +struct __stable_sort_switch +{ + static const unsigned value = 128*is_trivially_copy_assignable<_Tp>::value; +}; + +template +void +__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp, + typename iterator_traits<_RandomAccessIterator>::difference_type __len, + typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size) +{ + typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; + typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; + switch (__len) + { + case 0: + case 1: + return; + case 2: + if (__comp(*--__last, *__first)) + _IterOps<_AlgPolicy>::iter_swap(__first, __last); + return; + } + if (__len <= static_cast(__stable_sort_switch::value)) + { + std::__insertion_sort<_AlgPolicy, _Compare>(__first, __last, __comp); + return; + } + typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2; + _RandomAccessIterator __m = __first + __l2; + if (__len <= __buff_size) + { + __destruct_n __d(0); + unique_ptr __h2(__buff, __d); + std::__stable_sort_move<_AlgPolicy, _Compare>(__first, __m, __comp, __l2, __buff); + __d.__set(__l2, (value_type*)nullptr); + std::__stable_sort_move<_AlgPolicy, _Compare>(__m, __last, __comp, __len - __l2, __buff + __l2); + __d.__set(__len, (value_type*)nullptr); + std::__merge_move_assign<_AlgPolicy, _Compare>( + __buff, __buff + __l2, __buff + __l2, __buff + __len, __first, __comp); +// _VSTD::__merge<_Compare>(move_iterator(__buff), +// move_iterator(__buff + __l2), +// move_iterator<_RandomAccessIterator>(__buff + __l2), +// move_iterator<_RandomAccessIterator>(__buff + __len), +// __first, __comp); + return; + } + std::__stable_sort<_AlgPolicy, _Compare>(__first, __m, __comp, __l2, __buff, __buff_size); + std::__stable_sort<_AlgPolicy, _Compare>(__m, __last, __comp, __len - __l2, __buff, __buff_size); + std::__inplace_merge<_AlgPolicy>(__first, __m, __last, __comp, __l2, __len - __l2, __buff, __buff_size); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +void __stable_sort_impl(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare& __comp) { + using value_type = typename iterator_traits<_RandomAccessIterator>::value_type; + using difference_type = typename iterator_traits<_RandomAccessIterator>::difference_type; + + difference_type __len = __last - __first; + pair __buf(0, 0); + unique_ptr __h; + if (__len > static_cast(__stable_sort_switch::value)) { +// TODO: Remove the use of std::get_temporary_buffer +_LIBCPP_SUPPRESS_DEPRECATED_PUSH + __buf = std::get_temporary_buffer(__len); +_LIBCPP_SUPPRESS_DEPRECATED_POP + __h.reset(__buf.first); + } + + std::__stable_sort<_AlgPolicy, __comp_ref_type<_Compare> >(__first, __last, __comp, __len, __buf.first, __buf.second); + std::__check_strict_weak_ordering_sorted(__first, __last, __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +void stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { + std::__stable_sort_impl<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __comp); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +void stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last) { + std::stable_sort(__first, __last, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_STABLE_SORT_H diff --git a/lib/libcxx/include/__algorithm/swap_ranges.h b/lib/libcxx/include/__algorithm/swap_ranges.h new file mode 100644 index 0000000..5ce5ed8 --- /dev/null +++ b/lib/libcxx/include/__algorithm/swap_ranges.h @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_SWAP_RANGES_H +#define _LIBCPP___ALGORITHM_SWAP_RANGES_H + +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// 2+2 iterators: the shorter size will be used. +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +pair<_ForwardIterator1, _ForwardIterator2> +__swap_ranges(_ForwardIterator1 __first1, _Sentinel1 __last1, _ForwardIterator2 __first2, _Sentinel2 __last2) { + while (__first1 != __last1 && __first2 != __last2) { + _IterOps<_AlgPolicy>::iter_swap(__first1, __first2); + ++__first1; + ++__first2; + } + + return pair<_ForwardIterator1, _ForwardIterator2>(std::move(__first1), std::move(__first2)); +} + +// 2+1 iterators: size2 >= size1. +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +pair<_ForwardIterator1, _ForwardIterator2> +__swap_ranges(_ForwardIterator1 __first1, _Sentinel1 __last1, _ForwardIterator2 __first2) { + while (__first1 != __last1) { + _IterOps<_AlgPolicy>::iter_swap(__first1, __first2); + ++__first1; + ++__first2; + } + + return pair<_ForwardIterator1, _ForwardIterator2>(std::move(__first1), std::move(__first2)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator2 +swap_ranges(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) { + return std::__swap_ranges<_ClassicAlgPolicy>( + std::move(__first1), std::move(__last1), std::move(__first2)).second; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_SWAP_RANGES_H diff --git a/lib/libcxx/include/__algorithm/three_way_comp_ref_type.h b/lib/libcxx/include/__algorithm/three_way_comp_ref_type.h new file mode 100644 index 0000000..19c102f --- /dev/null +++ b/lib/libcxx/include/__algorithm/three_way_comp_ref_type.h @@ -0,0 +1,73 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_THREE_WAY_COMP_REF_TYPE_H +#define _LIBCPP___ALGORITHM_THREE_WAY_COMP_REF_TYPE_H + +#include <__compare/ordering.h> +#include <__config> +#include <__utility/declval.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +struct __debug_three_way_comp { + _Comp& __comp_; + _LIBCPP_HIDE_FROM_ABI constexpr __debug_three_way_comp(_Comp& __c) : __comp_(__c) {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(const _Tp& __x, const _Up& __y) { + auto __r = __comp_(__x, __y); + if constexpr (__comparison_category) + __do_compare_assert(__y, __x, __r); + return __r; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp& __x, _Up& __y) { + auto __r = __comp_(__x, __y); + if constexpr (__comparison_category) + __do_compare_assert(__y, __x, __r); + return __r; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr void __do_compare_assert(_LHS& __l, _RHS& __r, _Order __o) { + _Order __expected = __o; + if (__o == _Order::less) + __expected = _Order::greater; + if (__o == _Order::greater) + __expected = _Order::less; + _LIBCPP_ASSERT(__comp_(__l, __r) == __expected, "Comparator does not induce a strict weak ordering"); + (void)__l; + (void)__r; + } +}; + +// Pass the comparator by lvalue reference. Or in debug mode, using a +// debugging wrapper that stores a reference. +# if _LIBCPP_ENABLE_DEBUG_MODE +template +using __three_way_comp_ref_type = __debug_three_way_comp<_Comp>; +# else +template +using __three_way_comp_ref_type = _Comp&; +# endif + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_THREE_WAY_COMP_REF_TYPE_H diff --git a/lib/libcxx/include/__algorithm/transform.h b/lib/libcxx/include/__algorithm/transform.h new file mode 100644 index 0000000..4722c15 --- /dev/null +++ b/lib/libcxx/include/__algorithm/transform.h @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_TRANSFORM_H +#define _LIBCPP___ALGORITHM_TRANSFORM_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op) +{ + for (; __first != __last; ++__first, (void) ++__result) + *__result = __op(*__first); + return __result; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_OutputIterator +transform(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, + _OutputIterator __result, _BinaryOperation __binary_op) +{ + for (; __first1 != __last1; ++__first1, (void) ++__first2, ++__result) + *__result = __binary_op(*__first1, *__first2); + return __result; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_TRANSFORM_H diff --git a/lib/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h b/lib/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h new file mode 100644 index 0000000..1f20399 --- /dev/null +++ b/lib/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h @@ -0,0 +1,62 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_UNIFORM_RANDOM_BIT_GENERATOR_ADAPTOR_H +#define _LIBCPP___ALGORITHM_RANGES_UNIFORM_RANDOM_BIT_GENERATOR_ADAPTOR_H + +#include <__config> +#include <__functional/invoke.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Range versions of random algorithms (e.g. `std::shuffle`) are less constrained than their classic counterparts. +// Range algorithms only require the given generator to satisfy the `std::uniform_random_bit_generator` concept. +// Classic algorithms require the given generator to meet the uniform random bit generator requirements; these +// requirements include satisfying `std::uniform_random_bit_generator` and add a requirement for the generator to +// provide a nested `result_type` typedef (see `[rand.req.urng]`). +// +// To be able to reuse classic implementations, make the given generator meet the classic requirements by wrapping +// it into an adaptor type that forwards all of its interface and adds the required typedef. +template +class _ClassicGenAdaptor { +private: + // The generator is not required to be copyable or movable, so it has to be stored as a reference. + _Gen& __gen_; + +public: + using result_type = invoke_result_t<_Gen&>; + + _LIBCPP_HIDE_FROM_ABI + static constexpr auto min() { return __remove_cvref_t<_Gen>::min(); } + _LIBCPP_HIDE_FROM_ABI + static constexpr auto max() { return __remove_cvref_t<_Gen>::max(); } + + _LIBCPP_HIDE_FROM_ABI + constexpr explicit _ClassicGenAdaptor(_Gen& __g) : __gen_(__g) {} + + _LIBCPP_HIDE_FROM_ABI + constexpr auto operator()() const { return __gen_(); } +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ALGORITHM_RANGES_UNIFORM_RANDOM_BIT_GENERATOR_ADAPTOR_H diff --git a/lib/libcxx/include/__algorithm/unique.h b/lib/libcxx/include/__algorithm/unique.h new file mode 100644 index 0000000..1717a00 --- /dev/null +++ b/lib/libcxx/include/__algorithm/unique.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_UNIQUE_H +#define _LIBCPP___ALGORITHM_UNIQUE_H + +#include <__algorithm/adjacent_find.h> +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// unique + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 std::pair<_Iter, _Iter> +__unique(_Iter __first, _Sent __last, _BinaryPredicate&& __pred) { + __first = std::__adjacent_find(__first, __last, __pred); + if (__first != __last) { + // ... a a ? ... + // f i + _Iter __i = __first; + for (++__i; ++__i != __last;) + if (!__pred(*__first, *__i)) + *++__first = _IterOps<_AlgPolicy>::__iter_move(__i); + ++__first; + return std::pair<_Iter, _Iter>(std::move(__first), std::move(__i)); + } + return std::pair<_Iter, _Iter>(__first, __first); +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +unique(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { + return std::__unique<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __pred).first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +unique(_ForwardIterator __first, _ForwardIterator __last) { + return std::unique(__first, __last, __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_UNIQUE_H diff --git a/lib/libcxx/include/__algorithm/unique_copy.h b/lib/libcxx/include/__algorithm/unique_copy.h new file mode 100644 index 0000000..81fcd50 --- /dev/null +++ b/lib/libcxx/include/__algorithm/unique_copy.h @@ -0,0 +1,122 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_UNIQUE_COPY_H +#define _LIBCPP___ALGORITHM_UNIQUE_COPY_H + +#include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/conditional.h> +#include <__type_traits/is_base_of.h> +#include <__type_traits/is_same.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __unique_copy_tags { + +struct __reread_from_input_tag {}; +struct __reread_from_output_tag {}; +struct __read_from_tmp_value_tag {}; + +} // namespace __unique_copy_tags + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI pair<_InputIterator, _OutputIterator> +__unique_copy(_InputIterator __first, + _Sent __last, + _OutputIterator __result, + _BinaryPredicate&& __pred, + __unique_copy_tags::__read_from_tmp_value_tag) { + if (__first != __last) { + typename _IterOps<_AlgPolicy>::template __value_type<_InputIterator> __t(*__first); + *__result = __t; + ++__result; + while (++__first != __last) { + if (!__pred(__t, *__first)) { + __t = *__first; + *__result = __t; + ++__result; + } + } + } + return pair<_InputIterator, _OutputIterator>(std::move(__first), std::move(__result)); +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI pair<_ForwardIterator, _OutputIterator> +__unique_copy(_ForwardIterator __first, + _Sent __last, + _OutputIterator __result, + _BinaryPredicate&& __pred, + __unique_copy_tags::__reread_from_input_tag) { + if (__first != __last) { + _ForwardIterator __i = __first; + *__result = *__i; + ++__result; + while (++__first != __last) { + if (!__pred(*__i, *__first)) { + *__result = *__first; + ++__result; + __i = __first; + } + } + } + return pair<_ForwardIterator, _OutputIterator>(std::move(__first), std::move(__result)); +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI pair<_InputIterator, _InputAndOutputIterator> +__unique_copy(_InputIterator __first, + _Sent __last, + _InputAndOutputIterator __result, + _BinaryPredicate&& __pred, + __unique_copy_tags::__reread_from_output_tag) { + if (__first != __last) { + *__result = *__first; + while (++__first != __last) + if (!__pred(*__result, *__first)) + *++__result = *__first; + ++__result; + } + return pair<_InputIterator, _InputAndOutputIterator>(std::move(__first), std::move(__result)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator +unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred) { + using __algo_tag = __conditional_t< + is_base_of::iterator_category>::value, + __unique_copy_tags::__reread_from_input_tag, + __conditional_t< + is_base_of::iterator_category>::value && + is_same< typename iterator_traits<_InputIterator>::value_type, + typename iterator_traits<_OutputIterator>::value_type>::value, + __unique_copy_tags::__reread_from_output_tag, + __unique_copy_tags::__read_from_tmp_value_tag> >; + return std::__unique_copy<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), std::move(__result), __pred, __algo_tag()) + .second; +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator +unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result) { + return std::unique_copy(std::move(__first), std::move(__last), std::move(__result), __equal_to()); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_UNIQUE_COPY_H diff --git a/lib/libcxx/include/__algorithm/unwrap_iter.h b/lib/libcxx/include/__algorithm/unwrap_iter.h new file mode 100644 index 0000000..91346e3 --- /dev/null +++ b/lib/libcxx/include/__algorithm/unwrap_iter.h @@ -0,0 +1,85 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_UNWRAP_ITER_H +#define _LIBCPP___ALGORITHM_UNWRAP_ITER_H + +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__memory/pointer_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/declval.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +// TODO: Change the name of __unwrap_iter_impl to something more appropriate +// The job of __unwrap_iter is to remove iterator wrappers (like reverse_iterator or __wrap_iter), +// to reduce the number of template instantiations and to enable pointer-based optimizations e.g. in std::copy. +// +// Some algorithms (e.g. std::copy, but not std::sort) need to convert an +// "unwrapped" result back into the original iterator type. Doing that is the job of __rewrap_iter. + +// Default case - we can't unwrap anything +template ::value> +struct __unwrap_iter_impl { + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Iter __rewrap(_Iter, _Iter __iter) { return __iter; } + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Iter __unwrap(_Iter __i) _NOEXCEPT { return __i; } +}; + +// TODO(hardening): make sure that the following unwrapping doesn't unexpectedly turn hardened iterators into raw +// pointers. + +// It's a contiguous iterator, so we can use a raw pointer instead +template +struct __unwrap_iter_impl<_Iter, true> { + using _ToAddressT = decltype(std::__to_address(std::declval<_Iter>())); + + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Iter __rewrap(_Iter __orig_iter, _ToAddressT __unwrapped_iter) { + return __orig_iter + (__unwrapped_iter - std::__to_address(__orig_iter)); + } + + static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToAddressT __unwrap(_Iter __i) _NOEXCEPT { + return std::__to_address(__i); + } +}; + +template, + __enable_if_t::value, int> = 0> +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +decltype(_Impl::__unwrap(std::declval<_Iter>())) __unwrap_iter(_Iter __i) _NOEXCEPT { + return _Impl::__unwrap(__i); +} + +// Allow input_iterators to be passed to __unwrap_iter (but not __rewrap_iter) +#if _LIBCPP_STD_VER >= 20 +template ::value, int> = 0> +inline _LIBCPP_HIDE_FROM_ABI constexpr _Iter __unwrap_iter(_Iter __i) noexcept { + return __i; +} +#endif + +template > +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _OrigIter __rewrap_iter(_OrigIter __orig_iter, _Iter __iter) _NOEXCEPT { + return _Impl::__rewrap(std::move(__orig_iter), std::move(__iter)); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_PUSH_MACROS + +#endif // _LIBCPP___ALGORITHM_UNWRAP_ITER_H diff --git a/lib/libcxx/include/__algorithm/unwrap_range.h b/lib/libcxx/include/__algorithm/unwrap_range.h new file mode 100644 index 0000000..2c75c8f --- /dev/null +++ b/lib/libcxx/include/__algorithm/unwrap_range.h @@ -0,0 +1,97 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_UNWRAP_RANGE_H +#define _LIBCPP___ALGORITHM_UNWRAP_RANGE_H + +#include <__algorithm/unwrap_iter.h> +#include <__concepts/constructible.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/next.h> +#include <__utility/declval.h> +#include <__utility/move.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// __unwrap_range and __rewrap_range are used to unwrap ranges which may have different iterator and sentinel types. +// __unwrap_iter and __rewrap_iter don't work for this, because they assume that the iterator and sentinel have +// the same type. __unwrap_range tries to get two iterators and then forward to __unwrap_iter. + +#if _LIBCPP_STD_VER >= 20 +template +struct __unwrap_range_impl { + _LIBCPP_HIDE_FROM_ABI static constexpr auto __unwrap(_Iter __first, _Sent __sent) + requires random_access_iterator<_Iter> && sized_sentinel_for<_Sent, _Iter> + { + auto __last = ranges::next(__first, __sent); + return pair{std::__unwrap_iter(std::move(__first)), std::__unwrap_iter(std::move(__last))}; + } + + _LIBCPP_HIDE_FROM_ABI static constexpr auto __unwrap(_Iter __first, _Sent __last) { + return pair{std::move(__first), std::move(__last)}; + } + + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __rewrap(_Iter __orig_iter, decltype(std::__unwrap_iter(std::move(__orig_iter))) __iter) + requires random_access_iterator<_Iter> && sized_sentinel_for<_Sent, _Iter> + { + return std::__rewrap_iter(std::move(__orig_iter), std::move(__iter)); + } + + _LIBCPP_HIDE_FROM_ABI static constexpr auto __rewrap(const _Iter&, _Iter __iter) + requires (!(random_access_iterator<_Iter> && sized_sentinel_for<_Sent, _Iter>)) + { + return __iter; + } +}; + +template +struct __unwrap_range_impl<_Iter, _Iter> { + _LIBCPP_HIDE_FROM_ABI static constexpr auto __unwrap(_Iter __first, _Iter __last) { + return pair{std::__unwrap_iter(std::move(__first)), std::__unwrap_iter(std::move(__last))}; + } + + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __rewrap(_Iter __orig_iter, decltype(std::__unwrap_iter(__orig_iter)) __iter) { + return std::__rewrap_iter(std::move(__orig_iter), std::move(__iter)); + } +}; + +template +_LIBCPP_HIDE_FROM_ABI constexpr auto __unwrap_range(_Iter __first, _Sent __last) { + return __unwrap_range_impl<_Iter, _Sent>::__unwrap(std::move(__first), std::move(__last)); +} + +template < + class _Sent, + class _Iter, + class _Unwrapped = decltype(std::__unwrap_range(std::declval<_Iter>(), std::declval<_Sent>()))> +_LIBCPP_HIDE_FROM_ABI constexpr _Iter __rewrap_range(_Iter __orig_iter, _Unwrapped __iter) { + return __unwrap_range_impl<_Iter, _Sent>::__rewrap(std::move(__orig_iter), std::move(__iter)); +} +#else // _LIBCPP_STD_VER >= 20 +template ()))> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR pair<_Unwrapped, _Unwrapped> __unwrap_range(_Iter __first, _Iter __last) { + return std::make_pair(std::__unwrap_iter(std::move(__first)), std::__unwrap_iter(std::move(__last))); +} + +template ()))> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Iter __rewrap_range(_Iter __orig_iter, _Unwrapped __iter) { + return std::__rewrap_iter(std::move(__orig_iter), std::move(__iter)); +} +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_UNWRAP_RANGE_H diff --git a/lib/libcxx/include/__algorithm/upper_bound.h b/lib/libcxx/include/__algorithm/upper_bound.h new file mode 100644 index 0000000..f499f7a --- /dev/null +++ b/lib/libcxx/include/__algorithm/upper_bound.h @@ -0,0 +1,68 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_UPPER_BOUND_H +#define _LIBCPP___ALGORITHM_UPPER_BOUND_H + +#include <__algorithm/comp.h> +#include <__algorithm/half_positive.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/invoke.h> +#include <__iterator/advance.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_copy_constructible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Iter +__upper_bound(_Iter __first, _Sent __last, const _Tp& __value, _Compare&& __comp, _Proj&& __proj) { + auto __len = _IterOps<_AlgPolicy>::distance(__first, __last); + while (__len != 0) { + auto __half_len = std::__half_positive(__len); + auto __mid = _IterOps<_AlgPolicy>::next(__first, __half_len); + if (std::__invoke(__comp, __value, std::__invoke(__proj, *__mid))) + __len = __half_len; + else { + __first = ++__mid; + __len -= __half_len + 1; + } + } + return __first; +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) { + static_assert(is_copy_constructible<_ForwardIterator>::value, "Iterator has to be copy constructible"); + return std::__upper_bound<_ClassicAlgPolicy>( + std::move(__first), std::move(__last), __value, std::move(__comp), std::__identity()); +} + +template +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator +upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + return std::upper_bound(std::move(__first), std::move(__last), __value, __less<>()); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_UPPER_BOUND_H diff --git a/lib/libcxx/include/__assert b/lib/libcxx/include/__assert new file mode 100644 index 0000000..d4af7e6 --- /dev/null +++ b/lib/libcxx/include/__assert @@ -0,0 +1,37 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ASSERT +#define _LIBCPP___ASSERT + +#include <__config> +#include <__verbose_abort> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#define _LIBCPP_ASSERT(expression, message) \ + (__builtin_expect(static_cast(expression), 1) \ + ? (void)0 \ + : _LIBCPP_VERBOSE_ABORT( \ + "%s:%d: assertion %s failed: %s\n", __builtin_FILE(), __builtin_LINE(), #expression, message)) + +// TODO: __builtin_assume can currently inhibit optimizations. Until this has been fixed and we can add +// assumptions without a clear optimization intent, disable that to avoid worsening the code generation. +// See https://discourse.llvm.org/t/llvm-assume-blocks-optimization/71609 for a discussion. +#if 0 && __has_builtin(__builtin_assume) +# define _LIBCPP_ASSUME(expression) \ + (_LIBCPP_DIAGNOSTIC_PUSH _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wassume") \ + __builtin_assume(static_cast(expression)) _LIBCPP_DIAGNOSTIC_POP) +#else +# define _LIBCPP_ASSUME(expression) ((void)0) +#endif + +#endif // _LIBCPP___ASSERT diff --git a/lib/libcxx/include/__atomic/aliases.h b/lib/libcxx/include/__atomic/aliases.h new file mode 100644 index 0000000..e2f9fae --- /dev/null +++ b/lib/libcxx/include/__atomic/aliases.h @@ -0,0 +1,116 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ALIASES_H +#define _LIBCPP___ATOMIC_ALIASES_H + +#include <__atomic/atomic.h> +#include <__atomic/atomic_lock_free.h> +#include <__atomic/contention_t.h> +#include <__atomic/is_always_lock_free.h> +#include <__config> +#include <__type_traits/conditional.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +using atomic_bool = atomic; +using atomic_char = atomic; +using atomic_schar = atomic; +using atomic_uchar = atomic; +using atomic_short = atomic; +using atomic_ushort = atomic; +using atomic_int = atomic; +using atomic_uint = atomic; +using atomic_long = atomic; +using atomic_ulong = atomic; +using atomic_llong = atomic; +using atomic_ullong = atomic; +#ifndef _LIBCPP_HAS_NO_CHAR8_T +using atomic_char8_t = atomic; +#endif +using atomic_char16_t = atomic; +using atomic_char32_t = atomic; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using atomic_wchar_t = atomic; +#endif + +using atomic_int_least8_t = atomic; +using atomic_uint_least8_t = atomic; +using atomic_int_least16_t = atomic; +using atomic_uint_least16_t = atomic; +using atomic_int_least32_t = atomic; +using atomic_uint_least32_t = atomic; +using atomic_int_least64_t = atomic; +using atomic_uint_least64_t = atomic; + +using atomic_int_fast8_t = atomic; +using atomic_uint_fast8_t = atomic; +using atomic_int_fast16_t = atomic; +using atomic_uint_fast16_t = atomic; +using atomic_int_fast32_t = atomic; +using atomic_uint_fast32_t = atomic; +using atomic_int_fast64_t = atomic; +using atomic_uint_fast64_t = atomic; + +using atomic_int8_t = atomic< int8_t>; +using atomic_uint8_t = atomic; +using atomic_int16_t = atomic< int16_t>; +using atomic_uint16_t = atomic; +using atomic_int32_t = atomic< int32_t>; +using atomic_uint32_t = atomic; +using atomic_int64_t = atomic< int64_t>; +using atomic_uint64_t = atomic; + +using atomic_intptr_t = atomic; +using atomic_uintptr_t = atomic; +using atomic_size_t = atomic; +using atomic_ptrdiff_t = atomic; +using atomic_intmax_t = atomic; +using atomic_uintmax_t = atomic; + +// atomic_*_lock_free : prefer the contention type most highly, then the largest lock-free type + +#if _LIBCPP_STD_VER >= 17 +# define _LIBCPP_CONTENTION_LOCK_FREE ::std::__libcpp_is_always_lock_free<__cxx_contention_t>::__value +#else +# define _LIBCPP_CONTENTION_LOCK_FREE false +#endif + +#if ATOMIC_LLONG_LOCK_FREE == 2 +using __libcpp_signed_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, long long>; +using __libcpp_unsigned_lock_free = + __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned long long>; +#elif ATOMIC_INT_LOCK_FREE == 2 +using __libcpp_signed_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, int>; +using __libcpp_unsigned_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned int>; +#elif ATOMIC_SHORT_LOCK_FREE == 2 +using __libcpp_signed_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, short>; +using __libcpp_unsigned_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned short>; +#elif ATOMIC_CHAR_LOCK_FREE == 2 +using __libcpp_signed_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, char>; +using __libcpp_unsigned_lock_free = __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned char>; +#else +// No signed/unsigned lock-free types +# define _LIBCPP_NO_LOCK_FREE_TYPES +#endif + +#if !defined(_LIBCPP_NO_LOCK_FREE_TYPES) +using atomic_signed_lock_free = atomic<__libcpp_signed_lock_free>; +using atomic_unsigned_lock_free = atomic<__libcpp_unsigned_lock_free>; +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_ALIASES_H diff --git a/lib/libcxx/include/__atomic/atomic.h b/lib/libcxx/include/__atomic/atomic.h new file mode 100644 index 0000000..68df7f1 --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic.h @@ -0,0 +1,664 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_H +#define _LIBCPP___ATOMIC_ATOMIC_H + +#include <__atomic/atomic_base.h> +#include <__atomic/check_memory_order.h> +#include <__atomic/cxx_atomic_impl.h> +#include <__atomic/memory_order.h> +#include <__config> +#include <__memory/addressof.h> +#include <__type_traits/is_function.h> +#include <__type_traits/is_same.h> +#include <__type_traits/remove_pointer.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct atomic + : public __atomic_base<_Tp> +{ + using __base = __atomic_base<_Tp>; + using value_type = _Tp; + using difference_type = value_type; + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI + atomic() = default; +#else + _LIBCPP_HIDE_FROM_ABI + atomic() _NOEXCEPT = default; +#endif + + _LIBCPP_HIDE_FROM_ABI + _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {} + + _LIBCPP_HIDE_FROM_ABI + _Tp operator=(_Tp __d) volatile _NOEXCEPT + {__base::store(__d); return __d;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator=(_Tp __d) _NOEXCEPT + {__base::store(__d); return __d;} + + atomic& operator=(const atomic&) = delete; + atomic& operator=(const atomic&) volatile = delete; +}; + +// atomic + +template +struct atomic<_Tp*> + : public __atomic_base<_Tp*> +{ + using __base = __atomic_base<_Tp*>; + using value_type = _Tp*; + using difference_type = ptrdiff_t; + + _LIBCPP_HIDE_FROM_ABI + atomic() _NOEXCEPT = default; + + _LIBCPP_HIDE_FROM_ABI + _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {} + + _LIBCPP_HIDE_FROM_ABI + _Tp* operator=(_Tp* __d) volatile _NOEXCEPT + {__base::store(__d); return __d;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator=(_Tp* __d) _NOEXCEPT + {__base::store(__d); return __d;} + + _LIBCPP_HIDE_FROM_ABI + _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + // __atomic_fetch_add accepts function pointers, guard against them. + static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed"); + return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m); + } + + _LIBCPP_HIDE_FROM_ABI + _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + // __atomic_fetch_add accepts function pointers, guard against them. + static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed"); + return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m); + } + + _LIBCPP_HIDE_FROM_ABI + _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + // __atomic_fetch_add accepts function pointers, guard against them. + static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed"); + return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m); + } + + _LIBCPP_HIDE_FROM_ABI + _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + // __atomic_fetch_add accepts function pointers, guard against them. + static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed"); + return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m); + } + + _LIBCPP_HIDE_FROM_ABI + _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;} + + atomic& operator=(const atomic&) = delete; + atomic& operator=(const atomic&) volatile = delete; +}; + +// atomic_is_lock_free + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT +{ + return __o->is_lock_free(); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT +{ + return __o->is_lock_free(); +} + +// atomic_init + +template +_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI +void +atomic_init(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + std::__cxx_atomic_init(std::addressof(__o->__a_), __d); +} + +template +_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI +void +atomic_init(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + std::__cxx_atomic_init(std::addressof(__o->__a_), __d); +} + +// atomic_store + +template +_LIBCPP_HIDE_FROM_ABI +void +atomic_store(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + __o->store(__d); +} + +template +_LIBCPP_HIDE_FROM_ABI +void +atomic_store(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + __o->store(__d); +} + +// atomic_store_explicit + +template +_LIBCPP_HIDE_FROM_ABI +void +atomic_store_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) +{ + __o->store(__d, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +void +atomic_store_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) +{ + __o->store(__d, __m); +} + +// atomic_load + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT +{ + return __o->load(); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_load(const atomic<_Tp>* __o) _NOEXCEPT +{ + return __o->load(); +} + +// atomic_load_explicit + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) +{ + return __o->load(__m); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) +{ + return __o->load(__m); +} + +// atomic_exchange + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_exchange(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->exchange(__d); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_exchange(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->exchange(__d); +} + +// atomic_exchange_explicit + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_exchange_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT +{ + return __o->exchange(__d, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_exchange_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT +{ + return __o->exchange(__d, __m); +} + +// atomic_compare_exchange_weak + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->compare_exchange_weak(*__e, __d); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_weak(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->compare_exchange_weak(*__e, __d); +} + +// atomic_compare_exchange_strong + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->compare_exchange_strong(*__e, __d); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_strong(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT +{ + return __o->compare_exchange_strong(*__e, __d); +} + +// atomic_compare_exchange_weak_explicit + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, + typename atomic<_Tp>::value_type __d, + memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) +{ + return __o->compare_exchange_weak(*__e, __d, __s, __f); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d, + memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) +{ + return __o->compare_exchange_weak(*__e, __d, __s, __f); +} + +// atomic_compare_exchange_strong_explicit + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o, + typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d, + memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) +{ + return __o->compare_exchange_strong(*__e, __d, __s, __f); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool +atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, + typename atomic<_Tp>::value_type __d, + memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) +{ + return __o->compare_exchange_strong(*__e, __d, __s, __f); +} + +// atomic_wait + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_wait(const volatile atomic<_Tp>* __o, + typename atomic<_Tp>::value_type __v) _NOEXCEPT +{ + return __o->wait(__v); +} + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_wait(const atomic<_Tp>* __o, + typename atomic<_Tp>::value_type __v) _NOEXCEPT +{ + return __o->wait(__v); +} + +// atomic_wait_explicit + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_wait_explicit(const volatile atomic<_Tp>* __o, + typename atomic<_Tp>::value_type __v, + memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) +{ + return __o->wait(__v, __m); +} + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_wait_explicit(const atomic<_Tp>* __o, + typename atomic<_Tp>::value_type __v, + memory_order __m) _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) +{ + return __o->wait(__v, __m); +} + +// atomic_notify_one + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_notify_one(volatile atomic<_Tp>* __o) _NOEXCEPT +{ + __o->notify_one(); +} +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_notify_one(atomic<_Tp>* __o) _NOEXCEPT +{ + __o->notify_one(); +} + +// atomic_notify_all + +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_notify_all(volatile atomic<_Tp>* __o) _NOEXCEPT +{ + __o->notify_all(); +} +template +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI +void atomic_notify_all(atomic<_Tp>* __o) _NOEXCEPT +{ + __o->notify_all(); +} + +// atomic_fetch_add + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_fetch_add(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT +{ + return __o->fetch_add(__op); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp +atomic_fetch_add(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT +{ + return __o->fetch_add(__op); +} + +// atomic_fetch_add_explicit + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_add(__op, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_add_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_add(__op, __m); +} + +// atomic_fetch_sub + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_sub(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT +{ + return __o->fetch_sub(__op); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_sub(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT +{ + return __o->fetch_sub(__op); +} + +// atomic_fetch_sub_explicit + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_sub(__op, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp atomic_fetch_sub_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_sub(__op, __m); +} + +// atomic_fetch_and + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_and(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_and(__op); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_and(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_and(__op); +} + +// atomic_fetch_and_explicit + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_and(__op, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_and_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_and(__op, __m); +} + +// atomic_fetch_or + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_or(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_or(__op); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_or(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_or(__op); +} + +// atomic_fetch_or_explicit + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_or(__op, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_or_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_or(__op, __m); +} + +// atomic_fetch_xor + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_xor(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_xor(__op); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_xor(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT +{ + return __o->fetch_xor(__op); +} + +// atomic_fetch_xor_explicit + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_xor(__op, __m); +} + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if +< + is_integral<_Tp>::value && !is_same<_Tp, bool>::value, + _Tp +>::type +atomic_fetch_xor_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT +{ + return __o->fetch_xor(__op, __m); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_ATOMIC_H diff --git a/lib/libcxx/include/__atomic/atomic_base.h b/lib/libcxx/include/__atomic/atomic_base.h new file mode 100644 index 0000000..87100ba --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic_base.h @@ -0,0 +1,232 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_BASE_H +#define _LIBCPP___ATOMIC_ATOMIC_BASE_H + +#include <__atomic/atomic_sync.h> +#include <__atomic/check_memory_order.h> +#include <__atomic/cxx_atomic_impl.h> +#include <__atomic/is_always_lock_free.h> +#include <__atomic/memory_order.h> +#include <__availability> +#include <__config> +#include <__memory/addressof.h> +#include <__type_traits/is_integral.h> +#include <__type_traits/is_nothrow_default_constructible.h> +#include <__type_traits/is_same.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template ::value && !is_same<_Tp, bool>::value> +struct __atomic_base // false +{ + mutable __cxx_atomic_impl<_Tp> __a_; + +#if _LIBCPP_STD_VER >= 17 + static _LIBCPP_CONSTEXPR bool is_always_lock_free = __libcpp_is_always_lock_free<__cxx_atomic_impl<_Tp> >::__value; +#endif + + _LIBCPP_HIDE_FROM_ABI + bool is_lock_free() const volatile _NOEXCEPT + {return __cxx_atomic_is_lock_free(sizeof(_Tp));} + _LIBCPP_HIDE_FROM_ABI + bool is_lock_free() const _NOEXCEPT + {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();} + _LIBCPP_HIDE_FROM_ABI void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT + _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) { + std::__cxx_atomic_store(std::addressof(__a_), __d, __m); + } + _LIBCPP_HIDE_FROM_ABI void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT + _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) { + std::__cxx_atomic_store(std::addressof(__a_), __d, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { + return std::__cxx_atomic_load(std::addressof(__a_), __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT + _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { + return std::__cxx_atomic_load(std::addressof(__a_), __m); + } + _LIBCPP_HIDE_FROM_ABI + operator _Tp() const volatile _NOEXCEPT {return load();} + _LIBCPP_HIDE_FROM_ABI + operator _Tp() const _NOEXCEPT {return load();} + _LIBCPP_HIDE_FROM_ABI _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_exchange(std::addressof(__a_), __d, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_exchange(std::addressof(__a_), __d, __m); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_weak(_Tp& __e, _Tp __d, memory_order __s, memory_order __f) volatile _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { + return std::__cxx_atomic_compare_exchange_weak(std::addressof(__a_), std::addressof(__e), __d, __s, __f); + } + _LIBCPP_HIDE_FROM_ABI bool compare_exchange_weak(_Tp& __e, _Tp __d, memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { + return std::__cxx_atomic_compare_exchange_weak(std::addressof(__a_), std::addressof(__e), __d, __s, __f); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_strong(_Tp& __e, _Tp __d, memory_order __s, memory_order __f) volatile _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { + return std::__cxx_atomic_compare_exchange_strong(std::addressof(__a_), std::addressof(__e), __d, __s, __f); + } + _LIBCPP_HIDE_FROM_ABI bool compare_exchange_strong(_Tp& __e, _Tp __d, memory_order __s, memory_order __f) _NOEXCEPT + _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { + return std::__cxx_atomic_compare_exchange_strong(std::addressof(__a_), std::addressof(__e), __d, __s, __f); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_weak(_Tp& __e, _Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_compare_exchange_weak(std::addressof(__a_), std::addressof(__e), __d, __m, __m); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_weak(_Tp& __e, _Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_compare_exchange_weak(std::addressof(__a_), std::addressof(__e), __d, __m, __m); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_strong(_Tp& __e, _Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_compare_exchange_strong(std::addressof(__a_), std::addressof(__e), __d, __m, __m); + } + _LIBCPP_HIDE_FROM_ABI bool + compare_exchange_strong(_Tp& __e, _Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_compare_exchange_strong(std::addressof(__a_), std::addressof(__e), __d, __m, __m); + } + + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void wait(_Tp __v, memory_order __m = memory_order_seq_cst) const + volatile _NOEXCEPT { + std::__cxx_atomic_wait(std::addressof(__a_), __v, __m); + } + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void + wait(_Tp __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT { + std::__cxx_atomic_wait(std::addressof(__a_), __v, __m); + } + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void notify_one() volatile _NOEXCEPT { + std::__cxx_atomic_notify_one(std::addressof(__a_)); + } + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void notify_one() _NOEXCEPT { + std::__cxx_atomic_notify_one(std::addressof(__a_)); + } + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void notify_all() volatile _NOEXCEPT { + std::__cxx_atomic_notify_all(std::addressof(__a_)); + } + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void notify_all() _NOEXCEPT { + std::__cxx_atomic_notify_all(std::addressof(__a_)); + } + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI constexpr + __atomic_base() noexcept(is_nothrow_default_constructible_v<_Tp>) : __a_(_Tp()) {} +#else + _LIBCPP_HIDE_FROM_ABI + __atomic_base() _NOEXCEPT = default; +#endif + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR + __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {} + + __atomic_base(const __atomic_base&) = delete; +}; + +#if _LIBCPP_STD_VER >= 17 +template +_LIBCPP_CONSTEXPR bool __atomic_base<_Tp, __b>::is_always_lock_free; +#endif + +// atomic + +template +struct __atomic_base<_Tp, true> + : public __atomic_base<_Tp, false> +{ + using __base = __atomic_base<_Tp, false>; + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 + __atomic_base() _NOEXCEPT = default; + + _LIBCPP_HIDE_FROM_ABI + _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {} + + _LIBCPP_HIDE_FROM_ABI _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_fetch_and(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_fetch_and(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_fetch_or(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_fetch_or(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT { + return std::__cxx_atomic_fetch_xor(std::addressof(this->__a_), __op, __m); + } + _LIBCPP_HIDE_FROM_ABI _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT { + return std::__cxx_atomic_fetch_xor(std::addressof(this->__a_), __op, __m); + } + + _LIBCPP_HIDE_FROM_ABI + _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));} + _LIBCPP_HIDE_FROM_ABI + _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));} + _LIBCPP_HIDE_FROM_ABI + _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));} + _LIBCPP_HIDE_FROM_ABI + _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));} + _LIBCPP_HIDE_FROM_ABI + _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} + _LIBCPP_HIDE_FROM_ABI + _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;} + _LIBCPP_HIDE_FROM_ABI + _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;} +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_ATOMIC_BASE_H diff --git a/lib/libcxx/include/__atomic/atomic_flag.h b/lib/libcxx/include/__atomic/atomic_flag.h new file mode 100644 index 0000000..edfa978 --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic_flag.h @@ -0,0 +1,230 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_FLAG_H +#define _LIBCPP___ATOMIC_ATOMIC_FLAG_H + +#include <__atomic/atomic_sync.h> +#include <__atomic/contention_t.h> +#include <__atomic/cxx_atomic_impl.h> +#include <__atomic/memory_order.h> +#include <__chrono/duration.h> +#include <__config> +#include <__threading_support> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +struct atomic_flag +{ + __cxx_atomic_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_; + + _LIBCPP_HIDE_FROM_ABI + bool test(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT + {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);} + _LIBCPP_HIDE_FROM_ABI + bool test(memory_order __m = memory_order_seq_cst) const _NOEXCEPT + {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);} + + _LIBCPP_HIDE_FROM_ABI + bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT + {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);} + _LIBCPP_HIDE_FROM_ABI + bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT + {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);} + _LIBCPP_HIDE_FROM_ABI + void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT + {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);} + _LIBCPP_HIDE_FROM_ABI + void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT + {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);} + + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void wait(bool __v, memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT + {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);} + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void wait(bool __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT + {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);} + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void notify_one() volatile _NOEXCEPT + {__cxx_atomic_notify_one(&__a_);} + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void notify_one() _NOEXCEPT + {__cxx_atomic_notify_one(&__a_);} + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void notify_all() volatile _NOEXCEPT + {__cxx_atomic_notify_all(&__a_);} + _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI + void notify_all() _NOEXCEPT + {__cxx_atomic_notify_all(&__a_);} + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI constexpr + atomic_flag() _NOEXCEPT : __a_(false) {} +#else + atomic_flag() _NOEXCEPT = default; +#endif + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR + atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} // EXTENSION + + atomic_flag(const atomic_flag&) = delete; + atomic_flag& operator=(const atomic_flag&) = delete; + atomic_flag& operator=(const atomic_flag&) volatile = delete; + +}; + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test(const volatile atomic_flag* __o) _NOEXCEPT +{ + return __o->test(); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test(const atomic_flag* __o) _NOEXCEPT +{ + return __o->test(); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_explicit(const volatile atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + return __o->test(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_explicit(const atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + return __o->test(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT +{ + return __o->test_and_set(); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT +{ + return __o->test_and_set(); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + return __o->test_and_set(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +bool +atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + return __o->test_and_set(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT +{ + __o->clear(); +} + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_flag_clear(atomic_flag* __o) _NOEXCEPT +{ + __o->clear(); +} + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + __o->clear(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT +{ + __o->clear(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_wait(const volatile atomic_flag* __o, bool __v) _NOEXCEPT +{ + __o->wait(__v); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_wait(const atomic_flag* __o, bool __v) _NOEXCEPT +{ + __o->wait(__v); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_wait_explicit(const volatile atomic_flag* __o, + bool __v, memory_order __m) _NOEXCEPT +{ + __o->wait(__v, __m); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_wait_explicit(const atomic_flag* __o, + bool __v, memory_order __m) _NOEXCEPT +{ + __o->wait(__v, __m); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_notify_one(volatile atomic_flag* __o) _NOEXCEPT +{ + __o->notify_one(); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_notify_one(atomic_flag* __o) _NOEXCEPT +{ + __o->notify_one(); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_notify_all(volatile atomic_flag* __o) _NOEXCEPT +{ + __o->notify_all(); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_SYNC +void +atomic_flag_notify_all(atomic_flag* __o) _NOEXCEPT +{ + __o->notify_all(); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_ATOMIC_FLAG_H diff --git a/lib/libcxx/include/__atomic/atomic_init.h b/lib/libcxx/include/__atomic/atomic_init.h new file mode 100644 index 0000000..14310ae --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic_init.h @@ -0,0 +1,27 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_INIT_H +#define _LIBCPP___ATOMIC_ATOMIC_INIT_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#define ATOMIC_FLAG_INIT {false} +#define ATOMIC_VAR_INIT(__v) {__v} + +#if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) +# if defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 1400 +# pragma clang deprecated(ATOMIC_VAR_INIT) +# endif +#endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) + +#endif // _LIBCPP___ATOMIC_ATOMIC_INIT_H diff --git a/lib/libcxx/include/__atomic/atomic_lock_free.h b/lib/libcxx/include/__atomic/atomic_lock_free.h new file mode 100644 index 0000000..d607569 --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic_lock_free.h @@ -0,0 +1,48 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H +#define _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE) +# define ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE +# define ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE +#ifndef _LIBCPP_HAS_NO_CHAR8_T +# define ATOMIC_CHAR8_T_LOCK_FREE __CLANG_ATOMIC_CHAR8_T_LOCK_FREE +#endif +# define ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE +# define ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE +# define ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE +# define ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE +# define ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE +# define ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE +# define ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE +# define ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE +#elif defined(__GCC_ATOMIC_BOOL_LOCK_FREE) +# define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE +# define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE +#ifndef _LIBCPP_HAS_NO_CHAR8_T +# define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE +#endif +# define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE +# define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE +# define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE +# define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE +# define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE +# define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE +# define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE +# define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE +#endif + +#endif // _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H diff --git a/lib/libcxx/include/__atomic/atomic_sync.h b/lib/libcxx/include/__atomic/atomic_sync.h new file mode 100644 index 0000000..d55450b --- /dev/null +++ b/lib/libcxx/include/__atomic/atomic_sync.h @@ -0,0 +1,112 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_ATOMIC_SYNC_H +#define _LIBCPP___ATOMIC_ATOMIC_SYNC_H + +#include <__atomic/contention_t.h> +#include <__atomic/cxx_atomic_impl.h> +#include <__atomic/memory_order.h> +#include <__availability> +#include <__chrono/duration.h> +#include <__config> +#include <__memory/addressof.h> +#include <__thread/poll_with_backoff.h> +#include <__threading_support> +#include <__type_traits/decay.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#ifndef _LIBCPP_HAS_NO_THREADS + +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(void const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(void const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(void const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(void const volatile*, __cxx_contention_t); + +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(__cxx_atomic_contention_t const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(__cxx_atomic_contention_t const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(__cxx_atomic_contention_t const volatile*); +_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(__cxx_atomic_contention_t const volatile*, __cxx_contention_t); + +template +struct __libcpp_atomic_wait_backoff_impl { + _Atp* __a; + _Fn __test_fn; + _LIBCPP_AVAILABILITY_SYNC + _LIBCPP_HIDE_FROM_ABI bool operator()(chrono::nanoseconds __elapsed) const + { + if(__elapsed > chrono::microseconds(64)) + { + auto const __monitor = std::__libcpp_atomic_monitor(__a); + if(__test_fn()) + return true; + std::__libcpp_atomic_wait(__a, __monitor); + } + else if(__elapsed > chrono::microseconds(4)) + __libcpp_thread_yield(); + else + {} // poll + return false; + } +}; + +template +_LIBCPP_AVAILABILITY_SYNC +_LIBCPP_HIDE_FROM_ABI bool __cxx_atomic_wait(_Atp* __a, _Fn && __test_fn) +{ + __libcpp_atomic_wait_backoff_impl<_Atp, __decay_t<_Fn> > __backoff_fn = {__a, __test_fn}; + return std::__libcpp_thread_poll_with_backoff(__test_fn, __backoff_fn); +} + +#else // _LIBCPP_HAS_NO_THREADS + +template +_LIBCPP_HIDE_FROM_ABI void __cxx_atomic_notify_all(__cxx_atomic_impl<_Tp> const volatile*) { } +template +_LIBCPP_HIDE_FROM_ABI void __cxx_atomic_notify_one(__cxx_atomic_impl<_Tp> const volatile*) { } +template +_LIBCPP_HIDE_FROM_ABI bool __cxx_atomic_wait(_Atp*, _Fn && __test_fn) +{ + return std::__libcpp_thread_poll_with_backoff(__test_fn, __spinning_backoff_policy()); +} + +#endif // _LIBCPP_HAS_NO_THREADS + +template _LIBCPP_HIDE_FROM_ABI +bool __cxx_nonatomic_compare_equal(_Tp const& __lhs, _Tp const& __rhs) { + return std::memcmp(std::addressof(__lhs), std::addressof(__rhs), sizeof(_Tp)) == 0; +} + +template +struct __cxx_atomic_wait_test_fn_impl { + _Atp* __a; + _Tp __val; + memory_order __order; + _LIBCPP_HIDE_FROM_ABI bool operator()() const + { + return !std::__cxx_nonatomic_compare_equal(std::__cxx_atomic_load(__a, __order), __val); + } +}; + +template +_LIBCPP_AVAILABILITY_SYNC +_LIBCPP_HIDE_FROM_ABI bool __cxx_atomic_wait(_Atp* __a, _Tp const __val, memory_order __order) +{ + __cxx_atomic_wait_test_fn_impl<_Atp, _Tp> __test_fn = {__a, __val, __order}; + return std::__cxx_atomic_wait(__a, __test_fn); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_ATOMIC_SYNC_H diff --git a/lib/libcxx/include/__atomic/check_memory_order.h b/lib/libcxx/include/__atomic/check_memory_order.h new file mode 100644 index 0000000..d744312 --- /dev/null +++ b/lib/libcxx/include/__atomic/check_memory_order.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H +#define _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#define _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) \ + _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_consume || \ + __m == memory_order_acquire || \ + __m == memory_order_acq_rel, \ + "memory order argument to atomic operation is invalid") + +#define _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) \ + _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_release || \ + __m == memory_order_acq_rel, \ + "memory order argument to atomic operation is invalid") + +#define _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__m, __f) \ + _LIBCPP_DIAGNOSE_WARNING(__f == memory_order_release || \ + __f == memory_order_acq_rel, \ + "memory order argument to atomic operation is invalid") + +#endif // _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H diff --git a/lib/libcxx/include/__atomic/contention_t.h b/lib/libcxx/include/__atomic/contention_t.h new file mode 100644 index 0000000..1d8d024 --- /dev/null +++ b/lib/libcxx/include/__atomic/contention_t.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_CONTENTION_T_H +#define _LIBCPP___ATOMIC_CONTENTION_T_H + +#include <__atomic/cxx_atomic_impl.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if defined(__linux__) || (defined(_AIX) && !defined(__64BIT__)) + using __cxx_contention_t = int32_t; +#else + using __cxx_contention_t = int64_t; +#endif // __linux__ || (_AIX && !__64BIT__) + +using __cxx_atomic_contention_t = __cxx_atomic_impl<__cxx_contention_t>; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_CONTENTION_T_H diff --git a/lib/libcxx/include/__atomic/cxx_atomic_impl.h b/lib/libcxx/include/__atomic/cxx_atomic_impl.h new file mode 100644 index 0000000..167cee7 --- /dev/null +++ b/lib/libcxx/include/__atomic/cxx_atomic_impl.h @@ -0,0 +1,831 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H +#define _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H + +#include <__atomic/is_always_lock_free.h> +#include <__atomic/memory_order.h> +#include <__config> +#include <__memory/addressof.h> +#include <__type_traits/conditional.h> +#include <__type_traits/is_assignable.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__type_traits/remove_const.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) || \ + defined(_LIBCPP_ATOMIC_ONLY_USE_BUILTINS) + +// [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because +// the default operator= in an object is not volatile, a byte-by-byte copy +// is required. +template _LIBCPP_HIDE_FROM_ABI +typename enable_if::value>::type +__cxx_atomic_assign_volatile(_Tp& __a_value, _Tv const& __val) { + __a_value = __val; +} +template _LIBCPP_HIDE_FROM_ABI +typename enable_if::value>::type +__cxx_atomic_assign_volatile(_Tp volatile& __a_value, _Tv volatile const& __val) { + volatile char* __to = reinterpret_cast(std::addressof(__a_value)); + volatile char* __end = __to + sizeof(_Tp); + volatile const char* __from = reinterpret_cast(std::addressof(__val)); + while (__to != __end) + *__to++ = *__from++; +} + +#endif + +#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) + +template +struct __cxx_atomic_base_impl { + + _LIBCPP_HIDE_FROM_ABI +#ifndef _LIBCPP_CXX03_LANG + __cxx_atomic_base_impl() _NOEXCEPT = default; +#else + __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {} +#endif // _LIBCPP_CXX03_LANG + _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp value) _NOEXCEPT + : __a_value(value) {} + _Tp __a_value; +}; + +_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) { + // Avoid switch statement to make this a constexpr. + return __order == memory_order_relaxed ? __ATOMIC_RELAXED: + (__order == memory_order_acquire ? __ATOMIC_ACQUIRE: + (__order == memory_order_release ? __ATOMIC_RELEASE: + (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: + (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL: + __ATOMIC_CONSUME)))); +} + +_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) { + // Avoid switch statement to make this a constexpr. + return __order == memory_order_relaxed ? __ATOMIC_RELAXED: + (__order == memory_order_acquire ? __ATOMIC_ACQUIRE: + (__order == memory_order_release ? __ATOMIC_RELAXED: + (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: + (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE: + __ATOMIC_CONSUME)))); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val) { + __cxx_atomic_assign_volatile(__a->__a_value, __val); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val) { + __a->__a_value = __val; +} + +_LIBCPP_HIDE_FROM_ABI inline +void __cxx_atomic_thread_fence(memory_order __order) { + __atomic_thread_fence(__to_gcc_order(__order)); +} + +_LIBCPP_HIDE_FROM_ABI inline +void __cxx_atomic_signal_fence(memory_order __order) { + __atomic_signal_fence(__to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val, + memory_order __order) { + __atomic_store(std::addressof(__a->__a_value), std::addressof(__val), __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val, + memory_order __order) { + __atomic_store(std::addressof(__a->__a_value), std::addressof(__val), __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(const volatile __cxx_atomic_base_impl<_Tp>* __a, + memory_order __order) { + _Tp __ret; + __atomic_load(std::addressof(__a->__a_value), std::addressof(__ret), __to_gcc_order(__order)); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(const __cxx_atomic_base_impl<_Tp>* __a, memory_order __order) { + _Tp __ret; + __atomic_load(std::addressof(__a->__a_value), std::addressof(__ret), __to_gcc_order(__order)); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Tp __value, memory_order __order) { + _Tp __ret; + __atomic_exchange( + std::addressof(__a->__a_value), std::addressof(__value), std::addressof(__ret), __to_gcc_order(__order)); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp>* __a, _Tp __value, + memory_order __order) { + _Tp __ret; + __atomic_exchange( + std::addressof(__a->__a_value), std::addressof(__value), std::addressof(__ret), __to_gcc_order(__order)); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong( + volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, + memory_order __success, memory_order __failure) { + return __atomic_compare_exchange( + std::addressof(__a->__a_value), + __expected, + std::addressof(__value), + false, + __to_gcc_order(__success), + __to_gcc_failure_order(__failure)); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong( + __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success, + memory_order __failure) { + return __atomic_compare_exchange( + std::addressof(__a->__a_value), + __expected, + std::addressof(__value), + false, + __to_gcc_order(__success), + __to_gcc_failure_order(__failure)); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak( + volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, + memory_order __success, memory_order __failure) { + return __atomic_compare_exchange( + std::addressof(__a->__a_value), + __expected, + std::addressof(__value), + true, + __to_gcc_order(__success), + __to_gcc_failure_order(__failure)); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak( + __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success, + memory_order __failure) { + return __atomic_compare_exchange( + std::addressof(__a->__a_value), + __expected, + std::addressof(__value), + true, + __to_gcc_order(__success), + __to_gcc_failure_order(__failure)); +} + +template +struct __skip_amt { enum {value = 1}; }; + +template +struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; }; + +// FIXME: Haven't figured out what the spec says about using arrays with +// atomic_fetch_add. Force a failure rather than creating bad behavior. +template +struct __skip_amt<_Tp[]> { }; +template +struct __skip_amt<_Tp[n]> { }; + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Td __delta, memory_order __order) { + return __atomic_fetch_add(std::addressof(__a->__a_value), __delta * __skip_amt<_Tp>::value, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta, + memory_order __order) { + return __atomic_fetch_add(std::addressof(__a->__a_value), __delta * __skip_amt<_Tp>::value, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Td __delta, memory_order __order) { + return __atomic_fetch_sub(std::addressof(__a->__a_value), __delta * __skip_amt<_Tp>::value, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta, + memory_order __order) { + return __atomic_fetch_sub(std::addressof(__a->__a_value), __delta * __skip_amt<_Tp>::value, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Tp __pattern, memory_order __order) { + return __atomic_fetch_and(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp>* __a, + _Tp __pattern, memory_order __order) { + return __atomic_fetch_and(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Tp __pattern, memory_order __order) { + return __atomic_fetch_or(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern, + memory_order __order) { + return __atomic_fetch_or(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_base_impl<_Tp>* __a, + _Tp __pattern, memory_order __order) { + return __atomic_fetch_xor(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern, + memory_order __order) { + return __atomic_fetch_xor(std::addressof(__a->__a_value), __pattern, __to_gcc_order(__order)); +} + +#define __cxx_atomic_is_lock_free(__s) __atomic_is_lock_free(__s, 0) + +#elif defined(_LIBCPP_HAS_C_ATOMIC_IMP) + +template +struct __cxx_atomic_base_impl { + + _LIBCPP_HIDE_FROM_ABI +#ifndef _LIBCPP_CXX03_LANG + __cxx_atomic_base_impl() _NOEXCEPT = default; +#else + __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {} +#endif // _LIBCPP_CXX03_LANG + _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp __value) _NOEXCEPT + : __a_value(__value) {} + _LIBCPP_DISABLE_EXTENSION_WARNING _Atomic(_Tp) __a_value; +}; + +#define __cxx_atomic_is_lock_free(__s) __c11_atomic_is_lock_free(__s) + +_LIBCPP_HIDE_FROM_ABI inline +void __cxx_atomic_thread_fence(memory_order __order) _NOEXCEPT { + __c11_atomic_thread_fence(static_cast<__memory_order_underlying_t>(__order)); +} + +_LIBCPP_HIDE_FROM_ABI inline +void __cxx_atomic_signal_fence(memory_order __order) _NOEXCEPT { + __c11_atomic_signal_fence(static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val) _NOEXCEPT { + __c11_atomic_init(std::addressof(__a->__a_value), __val); +} +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val) _NOEXCEPT { + __c11_atomic_init(std::addressof(__a->__a_value), __val); +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val, memory_order __order) _NOEXCEPT { + __c11_atomic_store(std::addressof(__a->__a_value), __val, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val, memory_order __order) _NOEXCEPT { + __c11_atomic_store(std::addressof(__a->__a_value), __val, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const volatile* __a, memory_order __order) _NOEXCEPT { + using __ptr_type = __remove_const_t__a_value)>*; + return __c11_atomic_load( + const_cast<__ptr_type>(std::addressof(__a->__a_value)), static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const* __a, memory_order __order) _NOEXCEPT { + using __ptr_type = __remove_const_t__a_value)>*; + return __c11_atomic_load( + const_cast<__ptr_type>(std::addressof(__a->__a_value)), static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __value, memory_order __order) _NOEXCEPT { + return __c11_atomic_exchange( + std::addressof(__a->__a_value), __value, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> * __a, _Tp __value, memory_order __order) _NOEXCEPT { + return __c11_atomic_exchange( + std::addressof(__a->__a_value), __value, static_cast<__memory_order_underlying_t>(__order)); +} + +_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR memory_order __to_failure_order(memory_order __order) { + // Avoid switch statement to make this a constexpr. + return __order == memory_order_release ? memory_order_relaxed: + (__order == memory_order_acq_rel ? memory_order_acquire: + __order); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT { + return __c11_atomic_compare_exchange_strong( + std::addressof(__a->__a_value), + __expected, + __value, + static_cast<__memory_order_underlying_t>(__success), + static_cast<__memory_order_underlying_t>(__to_failure_order(__failure))); +} +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT { + return __c11_atomic_compare_exchange_strong( + std::addressof(__a->__a_value), + __expected, + __value, + static_cast<__memory_order_underlying_t>(__success), + static_cast<__memory_order_underlying_t>(__to_failure_order(__failure))); +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT { + return __c11_atomic_compare_exchange_weak( + std::addressof(__a->__a_value), + __expected, + __value, + static_cast<__memory_order_underlying_t>(__success), + static_cast<__memory_order_underlying_t>(__to_failure_order(__failure))); +} +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT { + return __c11_atomic_compare_exchange_weak( + std::addressof(__a->__a_value), + __expected, + __value, + static_cast<__memory_order_underlying_t>(__success), + static_cast<__memory_order_underlying_t>(__to_failure_order(__failure))); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_add( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_add( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptrdiff_t __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_add( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> * __a, ptrdiff_t __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_add( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_sub( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_sub( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptrdiff_t __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_sub( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> * __a, ptrdiff_t __delta, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_sub( + std::addressof(__a->__a_value), __delta, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_and( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_and( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_or( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_or( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_xor( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT { + return __c11_atomic_fetch_xor( + std::addressof(__a->__a_value), __pattern, static_cast<__memory_order_underlying_t>(__order)); +} + +#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP, _LIBCPP_HAS_C_ATOMIC_IMP + +#ifdef _LIBCPP_ATOMIC_ONLY_USE_BUILTINS + +template +struct __cxx_atomic_lock_impl { + + _LIBCPP_HIDE_FROM_ABI + __cxx_atomic_lock_impl() _NOEXCEPT + : __a_value(), __a_lock(0) {} + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR explicit + __cxx_atomic_lock_impl(_Tp value) _NOEXCEPT + : __a_value(value), __a_lock(0) {} + + _Tp __a_value; + mutable __cxx_atomic_base_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_lock; + + _LIBCPP_HIDE_FROM_ABI void __lock() const volatile { + while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire)) + /*spin*/; + } + _LIBCPP_HIDE_FROM_ABI void __lock() const { + while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire)) + /*spin*/; + } + _LIBCPP_HIDE_FROM_ABI void __unlock() const volatile { + __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release); + } + _LIBCPP_HIDE_FROM_ABI void __unlock() const { + __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release); + } + _LIBCPP_HIDE_FROM_ABI _Tp __read() const volatile { + __lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a_value); + __unlock(); + return __old; + } + _LIBCPP_HIDE_FROM_ABI _Tp __read() const { + __lock(); + _Tp __old = __a_value; + __unlock(); + return __old; + } +}; + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) { + __cxx_atomic_assign_volatile(__a->__a_value, __val); +} +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_init(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) { + __a->__a_value = __val; +} + +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) { + __a->__lock(); + __cxx_atomic_assign_volatile(__a->__a_value, __val); + __a->__unlock(); +} +template +_LIBCPP_HIDE_FROM_ABI +void __cxx_atomic_store(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) { + __a->__lock(); + __a->__a_value = __val; + __a->__unlock(); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(const volatile __cxx_atomic_lock_impl<_Tp>* __a, memory_order) { + return __a->__read(); +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_load(const __cxx_atomic_lock_impl<_Tp>* __a, memory_order) { + return __a->__read(); +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, __value); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_exchange(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value = __value; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Tp* __expected, _Tp __value, memory_order, memory_order) { + _Tp __temp; + __a->__lock(); + __cxx_atomic_assign_volatile(__temp, __a->__a_value); + bool __ret = (std::memcmp(&__temp, __expected, sizeof(_Tp)) == 0); + if(__ret) + __cxx_atomic_assign_volatile(__a->__a_value, __value); + else + __cxx_atomic_assign_volatile(*__expected, __a->__a_value); + __a->__unlock(); + return __ret; +} +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_lock_impl<_Tp>* __a, + _Tp* __expected, _Tp __value, memory_order, memory_order) { + __a->__lock(); + bool __ret = (std::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0); + if(__ret) + std::memcpy(&__a->__a_value, &__value, sizeof(_Tp)); + else + std::memcpy(__expected, &__a->__a_value, sizeof(_Tp)); + __a->__unlock(); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Tp* __expected, _Tp __value, memory_order, memory_order) { + _Tp __temp; + __a->__lock(); + __cxx_atomic_assign_volatile(__temp, __a->__a_value); + bool __ret = (std::memcmp(&__temp, __expected, sizeof(_Tp)) == 0); + if(__ret) + __cxx_atomic_assign_volatile(__a->__a_value, __value); + else + __cxx_atomic_assign_volatile(*__expected, __a->__a_value); + __a->__unlock(); + return __ret; +} +template +_LIBCPP_HIDE_FROM_ABI +bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_lock_impl<_Tp>* __a, + _Tp* __expected, _Tp __value, memory_order, memory_order) { + __a->__lock(); + bool __ret = (std::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0); + if(__ret) + std::memcpy(&__a->__a_value, &__value, sizeof(_Tp)); + else + std::memcpy(__expected, &__a->__a_value, sizeof(_Tp)); + __a->__unlock(); + return __ret; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Td __delta, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old + __delta)); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp>* __a, + _Td __delta, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value += __delta; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp*>* __a, + ptrdiff_t __delta, memory_order) { + __a->__lock(); + _Tp* __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, __old + __delta); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp* __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp*>* __a, + ptrdiff_t __delta, memory_order) { + __a->__lock(); + _Tp* __old = __a->__a_value; + __a->__a_value += __delta; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Td __delta, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old - __delta)); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_sub(__cxx_atomic_lock_impl<_Tp>* __a, + _Td __delta, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value -= __delta; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old & __pattern)); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_and(__cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value &= __pattern; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old | __pattern)); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_or(__cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value |= __pattern; + __a->__unlock(); + return __old; +} + +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old; + __cxx_atomic_assign_volatile(__old, __a->__a_value); + __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old ^ __pattern)); + __a->__unlock(); + return __old; +} +template +_LIBCPP_HIDE_FROM_ABI +_Tp __cxx_atomic_fetch_xor(__cxx_atomic_lock_impl<_Tp>* __a, + _Tp __pattern, memory_order) { + __a->__lock(); + _Tp __old = __a->__a_value; + __a->__a_value ^= __pattern; + __a->__unlock(); + return __old; +} + +template ::__value, + __cxx_atomic_base_impl<_Tp>, + __cxx_atomic_lock_impl<_Tp> >::type> +#else +template > +#endif //_LIBCPP_ATOMIC_ONLY_USE_BUILTINS +struct __cxx_atomic_impl : public _Base { + static_assert(is_trivially_copyable<_Tp>::value, + "std::atomic requires that 'T' be a trivially copyable type"); + + _LIBCPP_HIDE_FROM_ABI __cxx_atomic_impl() _NOEXCEPT = default; + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR explicit __cxx_atomic_impl(_Tp __value) _NOEXCEPT + : _Base(__value) {} +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H diff --git a/lib/libcxx/include/__atomic/fence.h b/lib/libcxx/include/__atomic/fence.h new file mode 100644 index 0000000..c62f38f --- /dev/null +++ b/lib/libcxx/include/__atomic/fence.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_FENCE_H +#define _LIBCPP___ATOMIC_FENCE_H + +#include <__atomic/cxx_atomic_impl.h> +#include <__atomic/memory_order.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_thread_fence(memory_order __m) _NOEXCEPT +{ + __cxx_atomic_thread_fence(__m); +} + +inline _LIBCPP_HIDE_FROM_ABI +void +atomic_signal_fence(memory_order __m) _NOEXCEPT +{ + __cxx_atomic_signal_fence(__m); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_FENCE_H diff --git a/lib/libcxx/include/__atomic/is_always_lock_free.h b/lib/libcxx/include/__atomic/is_always_lock_free.h new file mode 100644 index 0000000..fbbd437 --- /dev/null +++ b/lib/libcxx/include/__atomic/is_always_lock_free.h @@ -0,0 +1,28 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H +#define _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __libcpp_is_always_lock_free { + // __atomic_always_lock_free is available in all Standard modes + static const bool __value = __atomic_always_lock_free(sizeof(_Tp), 0); +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H diff --git a/lib/libcxx/include/__atomic/kill_dependency.h b/lib/libcxx/include/__atomic/kill_dependency.h new file mode 100644 index 0000000..1bd5c8c --- /dev/null +++ b/lib/libcxx/include/__atomic/kill_dependency.h @@ -0,0 +1,29 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_KILL_DEPENDENCY_H +#define _LIBCPP___ATOMIC_KILL_DEPENDENCY_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI +_Tp kill_dependency(_Tp __y) _NOEXCEPT +{ + return __y; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_KILL_DEPENDENCY_H diff --git a/lib/libcxx/include/__atomic/memory_order.h b/lib/libcxx/include/__atomic/memory_order.h new file mode 100644 index 0000000..3671dc3 --- /dev/null +++ b/lib/libcxx/include/__atomic/memory_order.h @@ -0,0 +1,72 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ATOMIC_MEMORY_ORDER_H +#define _LIBCPP___ATOMIC_MEMORY_ORDER_H + +#include <__config> +#include <__type_traits/is_same.h> +#include <__type_traits/underlying_type.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Figure out what the underlying type for `memory_order` would be if it were +// declared as an unscoped enum (accounting for -fshort-enums). Use this result +// to pin the underlying type in C++20. +enum __legacy_memory_order { + __mo_relaxed, + __mo_consume, + __mo_acquire, + __mo_release, + __mo_acq_rel, + __mo_seq_cst +}; + +using __memory_order_underlying_t = underlying_type<__legacy_memory_order>::type; + +#if _LIBCPP_STD_VER >= 20 + +enum class memory_order : __memory_order_underlying_t { + relaxed = __mo_relaxed, + consume = __mo_consume, + acquire = __mo_acquire, + release = __mo_release, + acq_rel = __mo_acq_rel, + seq_cst = __mo_seq_cst +}; + +static_assert((is_same::type, __memory_order_underlying_t>::value), + "unexpected underlying type for std::memory_order"); + +inline constexpr auto memory_order_relaxed = memory_order::relaxed; +inline constexpr auto memory_order_consume = memory_order::consume; +inline constexpr auto memory_order_acquire = memory_order::acquire; +inline constexpr auto memory_order_release = memory_order::release; +inline constexpr auto memory_order_acq_rel = memory_order::acq_rel; +inline constexpr auto memory_order_seq_cst = memory_order::seq_cst; + +#else + +enum memory_order { + memory_order_relaxed = __mo_relaxed, + memory_order_consume = __mo_consume, + memory_order_acquire = __mo_acquire, + memory_order_release = __mo_release, + memory_order_acq_rel = __mo_acq_rel, + memory_order_seq_cst = __mo_seq_cst, +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ATOMIC_MEMORY_ORDER_H diff --git a/lib/libcxx/include/__availability b/lib/libcxx/include/__availability new file mode 100644 index 0000000..7807f22 --- /dev/null +++ b/lib/libcxx/include/__availability @@ -0,0 +1,374 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___AVAILABILITY +#define _LIBCPP___AVAILABILITY + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +// Libc++ is shipped by various vendors. In particular, it is used as a system +// library on macOS, iOS and other Apple platforms. In order for users to be +// able to compile a binary that is intended to be deployed to an older version +// of a platform, Clang provides availability attributes [1]. These attributes +// can be placed on declarations and are used to describe the life cycle of a +// symbol in the library. +// +// The main goal is to ensure a compile-time error if a symbol that hasn't been +// introduced in a previously released library is used in a program that targets +// that previously released library. Normally, this would be a load-time error +// when one tries to launch the program against the older library. +// +// For example, the filesystem library was introduced in the dylib in macOS 10.15. +// If a user compiles on a macOS 10.15 host but targets macOS 10.13 with their +// program, the compiler would normally not complain (because the required +// declarations are in the headers), but the dynamic loader would fail to find +// the symbols when actually trying to launch the program on macOS 10.13. To +// turn this into a compile-time issue instead, declarations are annotated with +// when they were introduced, and the compiler can produce a diagnostic if the +// program references something that isn't available on the deployment target. +// +// This mechanism is general in nature, and any vendor can add their markup to +// the library (see below). Whenever a new feature is added that requires support +// in the shared library, two macros are added below to allow marking the feature +// as unavailable: +// 1. A macro named `_LIBCPP_AVAILABILITY_HAS_NO_` which must be defined +// exactly when compiling for a target that doesn't support the feature. +// 2. A macro named `_LIBCPP_AVAILABILITY_`, which must always be defined +// and must expand to the proper availability attribute for the platform. +// +// When vendors decide to ship the feature as part of their shared library, they +// can update these macros appropriately for their platform, and the library will +// use those to provide an optimal user experience. +// +// Furthermore, many features in the standard library have corresponding +// feature-test macros. The `_LIBCPP_AVAILABILITY_HAS_NO_` macros +// are checked by the corresponding feature-test macros generated by +// generate_feature_test_macro_components.py to ensure that the library +// doesn't announce a feature as being implemented if it is unavailable on +// the deployment target. +// +// Note that this mechanism is disabled by default in the "upstream" libc++. +// Availability annotations are only meaningful when shipping libc++ inside +// a platform (i.e. as a system library), and so vendors that want them should +// turn those annotations on at CMake configuration time. +// +// [1]: https://clang.llvm.org/docs/AttributeReference.html#availability + + +// For backwards compatibility, allow users to define _LIBCPP_DISABLE_AVAILABILITY +// for a while. +#if defined(_LIBCPP_DISABLE_AVAILABILITY) +# if !defined(_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS) +# define _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS +# endif +#endif + +// Availability markup is disabled when building the library, or when the compiler +// doesn't support the proper attributes. +#if defined(_LIBCPP_BUILDING_LIBRARY) || \ + defined(_LIBCXXABI_BUILDING_LIBRARY) || \ + !__has_feature(attribute_availability_with_strict) || \ + !__has_feature(attribute_availability_in_templates) || \ + !__has_extension(pragma_clang_attribute_external_declaration) +# if !defined(_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS) +# define _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS +# endif +#endif + +#if defined(_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS) + + // This controls the availability of std::shared_mutex and std::shared_timed_mutex, + // which were added to the dylib later. +// # define _LIBCPP_AVAILABILITY_HAS_NO_SHARED_MUTEX +# define _LIBCPP_AVAILABILITY_SHARED_MUTEX + + // These macros control the availability of std::bad_optional_access and + // other exception types. These were put in the shared library to prevent + // code bloat from every user program defining the vtable for these exception + // types. + // + // Note that when exceptions are disabled, the methods that normally throw + // these exceptions can be used even on older deployment targets, but those + // methods will abort instead of throwing. +// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_OPTIONAL_ACCESS +# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS + +// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_VARIANT_ACCESS +# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS + +// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_ANY_CAST +# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST + + // This controls the availability of std::uncaught_exceptions(). +// # define _LIBCPP_AVAILABILITY_HAS_NO_UNCAUGHT_EXCEPTIONS +# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS + + // This controls the availability of the sized version of ::operator delete, + // ::operator delete[], and their align_val_t variants, which were all added + // in C++17, and hence not present in early dylibs. +// # define _LIBCPP_AVAILABILITY_HAS_NO_SIZED_NEW_DELETE +# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE + + // This controls the availability of the std::future_error exception. + // + // Note that when exceptions are disabled, the methods that normally throw + // std::future_error can be used even on older deployment targets, but those + // methods will abort instead of throwing. +// # define _LIBCPP_AVAILABILITY_HAS_NO_FUTURE_ERROR +# define _LIBCPP_AVAILABILITY_FUTURE_ERROR + + // This controls the availability of std::type_info's vtable. + // I can't imagine how using std::type_info can work at all if + // this isn't supported. +// # define _LIBCPP_AVAILABILITY_HAS_NO_TYPEINFO_VTABLE +# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE + + // This controls the availability of std::locale::category members + // (e.g. std::locale::collate), which are defined in the dylib. +// # define _LIBCPP_AVAILABILITY_HAS_NO_LOCALE_CATEGORY +# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY + + // This controls the availability of atomic operations on std::shared_ptr + // (e.g. `std::atomic_store(std::shared_ptr)`), which require a shared + // lock table located in the dylib. +// # define _LIBCPP_AVAILABILITY_HAS_NO_ATOMIC_SHARED_PTR +# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR + + // These macros control the availability of all parts of that + // depend on something in the dylib. +// # define _LIBCPP_AVAILABILITY_HAS_NO_FILESYSTEM_LIBRARY +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + + // This controls the availability of floating-point std::to_chars functions. + // These overloads were added later than the integer overloads. +// # define _LIBCPP_AVAILABILITY_HAS_NO_TO_CHARS_FLOATING_POINT +# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT + + // This controls the availability of the C++20 synchronization library, + // which requires shared library support for various operations + // (see libcxx/src/atomic.cpp). This includes , , + // , and notification functions on std::atomic. +// # define _LIBCPP_AVAILABILITY_HAS_NO_SYNC +# define _LIBCPP_AVAILABILITY_SYNC + + // This controls whether the library claims to provide a default verbose + // termination function, and consequently whether the headers will try + // to use it when the mechanism isn't overriden at compile-time. +// # define _LIBCPP_AVAILABILITY_HAS_NO_VERBOSE_ABORT +# define _LIBCPP_AVAILABILITY_VERBOSE_ABORT + + // This controls the availability of the C++17 std::pmr library, + // which is implemented in large part in the built library. +// # define _LIBCPP_AVAILABILITY_HAS_NO_PMR +# define _LIBCPP_AVAILABILITY_PMR + +#elif defined(__APPLE__) + + // shared_mutex and shared_timed_mutex +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101200) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 30000) +# define _LIBCPP_AVAILABILITY_HAS_NO_SHARED_MUTEX +# endif +# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ + __attribute__((availability(macos,strict,introduced=10.12))) \ + __attribute__((availability(ios,strict,introduced=10.0))) \ + __attribute__((availability(tvos,strict,introduced=10.0))) \ + __attribute__((availability(watchos,strict,introduced=3.0))) + + // bad_optional_access, bad_variant_access and bad_any_cast + // Note: bad_optional_access & friends were not introduced in the matching + // macOS and iOS versions, so the version mismatch between macOS and others + // is intended. +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101300) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 120000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 50000) +# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_OPTIONAL_ACCESS +# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_VARIANT_ACCESS +# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_ANY_CAST +# endif +# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ + __attribute__((availability(macos,strict,introduced=10.13))) \ + __attribute__((availability(ios,strict,introduced=12.0))) \ + __attribute__((availability(tvos,strict,introduced=12.0))) \ + __attribute__((availability(watchos,strict,introduced=5.0))) +# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ + _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS +# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ + _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS + + // uncaught_exceptions +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101200) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 30000) +# define _LIBCPP_AVAILABILITY_HAS_NO_UNCAUGHT_EXCEPTIONS +# endif +# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ + __attribute__((availability(macos,strict,introduced=10.12))) \ + __attribute__((availability(ios,strict,introduced=10.0))) \ + __attribute__((availability(tvos,strict,introduced=10.0))) \ + __attribute__((availability(watchos,strict,introduced=3.0))) + + // sized operator new and sized operator delete +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101200) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 100000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 30000) +# define _LIBCPP_AVAILABILITY_HAS_NO_SIZED_NEW_DELETE +# endif +# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ + __attribute__((availability(macos,strict,introduced=10.12))) \ + __attribute__((availability(ios,strict,introduced=10.0))) \ + __attribute__((availability(tvos,strict,introduced=10.0))) \ + __attribute__((availability(watchos,strict,introduced=3.0))) + + // future_error +# if (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 60000) +# define _LIBCPP_AVAILABILITY_HAS_NO_FUTURE_ERROR +# endif +# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ + __attribute__((availability(ios,strict,introduced=6.0))) + + // type_info's vtable +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 100900) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000) +# define _LIBCPP_AVAILABILITY_HAS_NO_TYPEINFO_VTABLE +# endif +# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ + __attribute__((availability(macos,strict,introduced=10.9))) \ + __attribute__((availability(ios,strict,introduced=7.0))) + + // locale::category +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 100900) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000) +# define _LIBCPP_AVAILABILITY_HAS_NO_LOCALE_CATEGORY +# endif +# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ + __attribute__((availability(macos,strict,introduced=10.9))) \ + __attribute__((availability(ios,strict,introduced=7.0))) + + // atomic operations on shared_ptr +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 100900) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000) +# define _LIBCPP_AVAILABILITY_HAS_NO_ATOMIC_SHARED_PTR +# endif +# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ + __attribute__((availability(macos,strict,introduced=10.9))) \ + __attribute__((availability(ios,strict,introduced=7.0))) + + // +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 130000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 130000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 60000) +# define _LIBCPP_AVAILABILITY_HAS_NO_FILESYSTEM_LIBRARY +# endif +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY \ + __attribute__((availability(macos,strict,introduced=10.15))) \ + __attribute__((availability(ios,strict,introduced=13.0))) \ + __attribute__((availability(tvos,strict,introduced=13.0))) \ + __attribute__((availability(watchos,strict,introduced=6.0))) +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH \ + _Pragma("clang attribute push(__attribute__((availability(macos,strict,introduced=10.15))), apply_to=any(function,record))") \ + _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ + _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ + _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") +# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP \ + _Pragma("clang attribute pop") \ + _Pragma("clang attribute pop") \ + _Pragma("clang attribute pop") \ + _Pragma("clang attribute pop") + + // std::to_chars(floating-point) +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 130300) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 160300) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 160300) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 90300) +# define _LIBCPP_AVAILABILITY_HAS_NO_TO_CHARS_FLOATING_POINT +# endif +# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT \ + __attribute__((availability(macos,strict,introduced=13.3))) \ + __attribute__((availability(ios,strict,introduced=16.3))) \ + __attribute__((availability(tvos,strict,introduced=16.3))) \ + __attribute__((availability(watchos,strict,introduced=9.3))) + + // c++20 synchronization library +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 110000) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 140000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 140000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 70000) +# define _LIBCPP_AVAILABILITY_HAS_NO_SYNC +# endif +# define _LIBCPP_AVAILABILITY_SYNC \ + __attribute__((availability(macos,strict,introduced=11.0))) \ + __attribute__((availability(ios,strict,introduced=14.0))) \ + __attribute__((availability(tvos,strict,introduced=14.0))) \ + __attribute__((availability(watchos,strict,introduced=7.0))) + + // __libcpp_verbose_abort +# if 1 // TODO: Update once this is released +# define _LIBCPP_AVAILABILITY_HAS_NO_VERBOSE_ABORT +# endif +# define _LIBCPP_AVAILABILITY_VERBOSE_ABORT \ + __attribute__((unavailable)) + + // std::pmr +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 140000) || \ + (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 170000) || \ + (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 170000) || \ + (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 100000) +# define _LIBCPP_AVAILABILITY_HAS_NO_PMR +# endif +// TODO: Enable std::pmr markup once https://github.com/llvm/llvm-project/issues/40340 has been fixed +// Until then, it is possible for folks to try to use `std::pmr` when back-deploying to targets that don't support +// it and it'll be a load-time error, but we don't have a good alternative because the library won't compile if we +// use availability annotations until that bug has been fixed. +# if 0 +# define _LIBCPP_AVAILABILITY_PMR \ + __attribute__((availability(macos, strict, introduced = 14.0))) \ + __attribute__((availability(ios, strict, introduced = 17.0))) \ + __attribute__((availability(tvos, strict, introduced = 17.0))) \ + __attribute__((availability(watchos, strict, introduced = 10.0))) +# else +# define _LIBCPP_AVAILABILITY_PMR +# endif + +#else + +// ...New vendors can add availability markup here... + +# error "It looks like you're trying to enable vendor availability markup, but you haven't defined the corresponding macros yet!" + +#endif + +// Define availability attributes that depend on _LIBCPP_HAS_NO_EXCEPTIONS. +// Those are defined in terms of the availability attributes above, and +// should not be vendor-specific. +#if defined(_LIBCPP_HAS_NO_EXCEPTIONS) +# define _LIBCPP_AVAILABILITY_FUTURE +# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST +# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS +# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS +#else +# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR +# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST +# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS +# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS +#endif + +#endif // _LIBCPP___AVAILABILITY diff --git a/lib/libcxx/include/__bit/bit_cast.h b/lib/libcxx/include/__bit/bit_cast.h new file mode 100644 index 0000000..3984246 --- /dev/null +++ b/lib/libcxx/include/__bit/bit_cast.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BIT_CAST_H +#define _LIBCPP___BIT_BIT_CAST_H + +#include <__config> +#include <__type_traits/is_trivially_copyable.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template + requires(sizeof(_ToType) == sizeof(_FromType) && + is_trivially_copyable_v<_ToType> && + is_trivially_copyable_v<_FromType>) +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _ToType bit_cast(const _FromType& __from) noexcept { + return __builtin_bit_cast(_ToType, __from); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BIT_CAST_H diff --git a/lib/libcxx/include/__bit/bit_ceil.h b/lib/libcxx/include/__bit/bit_ceil.h new file mode 100644 index 0000000..706d446 --- /dev/null +++ b/lib/libcxx/include/__bit/bit_ceil.h @@ -0,0 +1,46 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BIT_CEIL_H +#define _LIBCPP___BIT_BIT_CEIL_H + +#include <__assert> +#include <__bit/countl.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp bit_ceil(_Tp __t) noexcept { + if (__t < 2) + return 1; + const unsigned __n = numeric_limits<_Tp>::digits - std::countl_zero((_Tp)(__t - 1u)); + _LIBCPP_ASSERT_UNCATEGORIZED(__n != numeric_limits<_Tp>::digits, "Bad input to bit_ceil"); + + if constexpr (sizeof(_Tp) >= sizeof(unsigned)) + return _Tp{1} << __n; + else { + const unsigned __extra = numeric_limits::digits - numeric_limits<_Tp>::digits; + const unsigned __ret_val = 1u << (__n + __extra); + return (_Tp)(__ret_val >> __extra); + } +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BIT_CEIL_H diff --git a/lib/libcxx/include/__bit/bit_floor.h b/lib/libcxx/include/__bit/bit_floor.h new file mode 100644 index 0000000..cf5cf58 --- /dev/null +++ b/lib/libcxx/include/__bit/bit_floor.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BIT_FLOOR_H +#define _LIBCPP___BIT_BIT_FLOOR_H + +#include <__bit/bit_log2.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp bit_floor(_Tp __t) noexcept { + return __t == 0 ? 0 : _Tp{1} << std::__bit_log2(__t); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BIT_FLOOR_H diff --git a/lib/libcxx/include/__bit/bit_log2.h b/lib/libcxx/include/__bit/bit_log2.h new file mode 100644 index 0000000..62936f6 --- /dev/null +++ b/lib/libcxx/include/__bit/bit_log2.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BIT_LOG2_H +#define _LIBCPP___BIT_BIT_LOG2_H + +#include <__bit/countl.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_HIDE_FROM_ABI constexpr _Tp __bit_log2(_Tp __t) noexcept { + return numeric_limits<_Tp>::digits - 1 - std::countl_zero(__t); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BIT_LOG2_H diff --git a/lib/libcxx/include/__bit/bit_width.h b/lib/libcxx/include/__bit/bit_width.h new file mode 100644 index 0000000..a2020a0 --- /dev/null +++ b/lib/libcxx/include/__bit/bit_width.h @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BIT_WIDTH_H +#define _LIBCPP___BIT_BIT_WIDTH_H + +#include <__bit/bit_log2.h> +#include <__concepts/arithmetic.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int bit_width(_Tp __t) noexcept { + return __t == 0 ? 0 : std::__bit_log2(__t) + 1; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___BIT_BIT_WIDTH_H diff --git a/lib/libcxx/include/__bit/blsr.h b/lib/libcxx/include/__bit/blsr.h new file mode 100644 index 0000000..de991e9 --- /dev/null +++ b/lib/libcxx/include/__bit/blsr.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BLSR_H +#define _LIBCPP___BIT_BLSR_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned __libcpp_blsr(unsigned __x) _NOEXCEPT { + return __x ^ (__x & -__x); +} + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long __libcpp_blsr(unsigned long __x) _NOEXCEPT { + return __x ^ (__x & -__x); +} + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long long __libcpp_blsr(unsigned long long __x) _NOEXCEPT { + return __x ^ (__x & -__x); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BLSR_H diff --git a/lib/libcxx/include/__bit/byteswap.h b/lib/libcxx/include/__bit/byteswap.h new file mode 100644 index 0000000..a1e1b53 --- /dev/null +++ b/lib/libcxx/include/__bit/byteswap.h @@ -0,0 +1,54 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_BYTESWAP_H +#define _LIBCPP___BIT_BYTESWAP_H + +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp byteswap(_Tp __val) noexcept { + + if constexpr (sizeof(_Tp) == 1) { + return __val; + } else if constexpr (sizeof(_Tp) == 2) { + return __builtin_bswap16(__val); + } else if constexpr (sizeof(_Tp) == 4) { + return __builtin_bswap32(__val); + } else if constexpr (sizeof(_Tp) == 8) { + return __builtin_bswap64(__val); +#ifndef _LIBCPP_HAS_NO_INT128 + } else if constexpr (sizeof(_Tp) == 16) { +#if __has_builtin(__builtin_bswap128) + return __builtin_bswap128(__val); +#else + return static_cast<_Tp>(byteswap(static_cast(__val))) << 64 | + static_cast<_Tp>(byteswap(static_cast(__val >> 64))); +#endif // __has_builtin(__builtin_bswap128) +#endif // _LIBCPP_HAS_NO_INT128 + } else { + static_assert(sizeof(_Tp) == 0, "byteswap is unimplemented for integral types of this size"); + } +} + +#endif // _LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_BYTESWAP_H diff --git a/lib/libcxx/include/__bit/countl.h b/lib/libcxx/include/__bit/countl.h new file mode 100644 index 0000000..5d5744a --- /dev/null +++ b/lib/libcxx/include/__bit/countl.h @@ -0,0 +1,104 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_COUNTL_H +#define _LIBCPP___BIT_COUNTL_H + +#include <__bit/rotate.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include <__type_traits/is_unsigned_integer.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_clz(unsigned __x) _NOEXCEPT { return __builtin_clz(__x); } + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_clz(unsigned long __x) _NOEXCEPT { return __builtin_clzl(__x); } + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_clz(unsigned long long __x) _NOEXCEPT { return __builtin_clzll(__x); } + +# ifndef _LIBCPP_HAS_NO_INT128 +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +int __libcpp_clz(__uint128_t __x) _NOEXCEPT { + // The function is written in this form due to C++ constexpr limitations. + // The algorithm: + // - Test whether any bit in the high 64-bits is set + // - No bits set: + // - The high 64-bits contain 64 leading zeros, + // - Add the result of the low 64-bits. + // - Any bits set: + // - The number of leading zeros of the input is the number of leading + // zeros in the high 64-bits. + return ((__x >> 64) == 0) + ? (64 + __builtin_clzll(static_cast(__x))) + : __builtin_clzll(static_cast(__x >> 64)); +} +# endif // _LIBCPP_HAS_NO_INT128 + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +int __countl_zero(_Tp __t) _NOEXCEPT +{ + static_assert(__libcpp_is_unsigned_integer<_Tp>::value, "__countl_zero requires an unsigned integer type"); + if (__t == 0) + return numeric_limits<_Tp>::digits; + + if (sizeof(_Tp) <= sizeof(unsigned int)) + return std::__libcpp_clz(static_cast(__t)) + - (numeric_limits::digits - numeric_limits<_Tp>::digits); + else if (sizeof(_Tp) <= sizeof(unsigned long)) + return std::__libcpp_clz(static_cast(__t)) + - (numeric_limits::digits - numeric_limits<_Tp>::digits); + else if (sizeof(_Tp) <= sizeof(unsigned long long)) + return std::__libcpp_clz(static_cast(__t)) + - (numeric_limits::digits - numeric_limits<_Tp>::digits); + else + { + int __ret = 0; + int __iter = 0; + const unsigned int __ulldigits = numeric_limits::digits; + while (true) { + __t = std::__rotr(__t, __ulldigits); + if ((__iter = std::__countl_zero(static_cast(__t))) != __ulldigits) + break; + __ret += __iter; + } + return __ret + __iter; + } +} + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int countl_zero(_Tp __t) noexcept { + return std::__countl_zero(__t); +} + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int countl_one(_Tp __t) noexcept { + return __t != numeric_limits<_Tp>::max() ? std::countl_zero(static_cast<_Tp>(~__t)) : numeric_limits<_Tp>::digits; +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___BIT_COUNTL_H diff --git a/lib/libcxx/include/__bit/countr.h b/lib/libcxx/include/__bit/countr.h new file mode 100644 index 0000000..66ca5e7 --- /dev/null +++ b/lib/libcxx/include/__bit/countr.h @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_COUNTR_H +#define _LIBCPP___BIT_COUNTR_H + +#include <__bit/rotate.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_ctz(unsigned __x) _NOEXCEPT { return __builtin_ctz(__x); } + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_ctz(unsigned long __x) _NOEXCEPT { return __builtin_ctzl(__x); } + +_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR +int __libcpp_ctz(unsigned long long __x) _NOEXCEPT { return __builtin_ctzll(__x); } + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int countr_zero(_Tp __t) noexcept { + if (__t == 0) + return numeric_limits<_Tp>::digits; + + if (sizeof(_Tp) <= sizeof(unsigned int)) + return std::__libcpp_ctz(static_cast(__t)); + else if (sizeof(_Tp) <= sizeof(unsigned long)) + return std::__libcpp_ctz(static_cast(__t)); + else if (sizeof(_Tp) <= sizeof(unsigned long long)) + return std::__libcpp_ctz(static_cast(__t)); + else { + int __ret = 0; + const unsigned int __ulldigits = numeric_limits::digits; + while (static_cast(__t) == 0uLL) { + __ret += __ulldigits; + __t >>= __ulldigits; + } + return __ret + std::__libcpp_ctz(static_cast(__t)); + } +} + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int countr_one(_Tp __t) noexcept { + return __t != numeric_limits<_Tp>::max() ? std::countr_zero(static_cast<_Tp>(~__t)) : numeric_limits<_Tp>::digits; +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___BIT_COUNTR_H diff --git a/lib/libcxx/include/__bit/endian.h b/lib/libcxx/include/__bit/endian.h new file mode 100644 index 0000000..52635f2 --- /dev/null +++ b/lib/libcxx/include/__bit/endian.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_ENDIAN_H +#define _LIBCPP___BIT_ENDIAN_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +enum class endian { + little = 0xDEAD, + big = 0xFACE, +# if defined(_LIBCPP_LITTLE_ENDIAN) + native = little +# elif defined(_LIBCPP_BIG_ENDIAN) + native = big +# else + native = 0xCAFE +# endif +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___BIT_ENDIAN_H diff --git a/lib/libcxx/include/__bit/has_single_bit.h b/lib/libcxx/include/__bit/has_single_bit.h new file mode 100644 index 0000000..a4e1780 --- /dev/null +++ b/lib/libcxx/include/__bit/has_single_bit.h @@ -0,0 +1,37 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_HAS_SINGLE_BIT_H +#define _LIBCPP___BIT_HAS_SINGLE_BIT_H + +#include <__concepts/arithmetic.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool has_single_bit(_Tp __t) noexcept { + return __t != 0 && (((__t & (__t - 1)) == 0)); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___BIT_HAS_SINGLE_BIT_H diff --git a/lib/libcxx/include/__bit/popcount.h b/lib/libcxx/include/__bit/popcount.h new file mode 100644 index 0000000..62f4786 --- /dev/null +++ b/lib/libcxx/include/__bit/popcount.h @@ -0,0 +1,61 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_POPCOUNT_H +#define _LIBCPP___BIT_POPCOUNT_H + +#include <__bit/rotate.h> +#include <__concepts/arithmetic.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +int __libcpp_popcount(unsigned __x) _NOEXCEPT { return __builtin_popcount(__x); } + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +int __libcpp_popcount(unsigned long __x) _NOEXCEPT { return __builtin_popcountl(__x); } + +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +int __libcpp_popcount(unsigned long long __x) _NOEXCEPT { return __builtin_popcountll(__x); } + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr int popcount(_Tp __t) noexcept { + if (sizeof(_Tp) <= sizeof(unsigned int)) + return std::__libcpp_popcount(static_cast(__t)); + else if (sizeof(_Tp) <= sizeof(unsigned long)) + return std::__libcpp_popcount(static_cast(__t)); + else if (sizeof(_Tp) <= sizeof(unsigned long long)) + return std::__libcpp_popcount(static_cast(__t)); + else { + int __ret = 0; + while (__t != 0) { + __ret += std::__libcpp_popcount(static_cast(__t)); + __t >>= numeric_limits::digits; + } + return __ret; + } +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___BIT_POPCOUNT_H diff --git a/lib/libcxx/include/__bit/rotate.h b/lib/libcxx/include/__bit/rotate.h new file mode 100644 index 0000000..e9f4c8d --- /dev/null +++ b/lib/libcxx/include/__bit/rotate.h @@ -0,0 +1,53 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_ROTATE_H +#define _LIBCPP___BIT_ROTATE_H + +#include <__concepts/arithmetic.h> +#include <__config> +#include <__type_traits/is_unsigned_integer.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp __rotr(_Tp __t, unsigned int __cnt) _NOEXCEPT +{ + static_assert(__libcpp_is_unsigned_integer<_Tp>::value, "__rotr requires an unsigned integer type"); + const unsigned int __dig = numeric_limits<_Tp>::digits; + if ((__cnt % __dig) == 0) + return __t; + return (__t >> (__cnt % __dig)) | (__t << (__dig - (__cnt % __dig))); +} + +#if _LIBCPP_STD_VER >= 20 + +template <__libcpp_unsigned_integer _Tp> +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotl(_Tp __t, unsigned int __cnt) noexcept { + const unsigned int __dig = numeric_limits<_Tp>::digits; + if ((__cnt % __dig) == 0) + return __t; + return (__t << (__cnt % __dig)) | (__t >> (__dig - (__cnt % __dig))); +} + +template <__libcpp_unsigned_integer _Tp> +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotr(_Tp __t, unsigned int __cnt) noexcept { + return std::__rotr(__t, __cnt); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___BIT_ROTATE_H diff --git a/lib/libcxx/include/__bit_reference b/lib/libcxx/include/__bit_reference new file mode 100644 index 0000000..a6bb6d4 --- /dev/null +++ b/lib/libcxx/include/__bit_reference @@ -0,0 +1,1363 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___BIT_REFERENCE +#define _LIBCPP___BIT_REFERENCE + +#include <__algorithm/copy_n.h> +#include <__algorithm/fill_n.h> +#include <__algorithm/min.h> +#include <__bit/countr.h> +#include <__bit/popcount.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__memory/construct_at.h> +#include <__memory/pointer_traits.h> +#include <__type_traits/conditional.h> +#include <__utility/swap.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + +_LIBCPP_BEGIN_NAMESPACE_STD + +template class __bit_iterator; +template class __bit_const_reference; + +template +struct __has_storage_type +{ + static const bool value = false; +}; + +template ::value> +class __bit_reference +{ + typedef typename _Cp::__storage_type __storage_type; + typedef typename _Cp::__storage_pointer __storage_pointer; + + __storage_pointer __seg_; + __storage_type __mask_; + + friend typename _Cp::__self; + + friend class __bit_const_reference<_Cp>; + friend class __bit_iterator<_Cp, false>; +public: + using __container = typename _Cp::__self; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_reference(const __bit_reference&) = default; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 operator bool() const _NOEXCEPT + {return static_cast(*__seg_ & __mask_);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 bool operator ~() const _NOEXCEPT + {return !static_cast(*this);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_reference& operator=(bool __x) _NOEXCEPT + { + if (__x) + *__seg_ |= __mask_; + else + *__seg_ &= ~__mask_; + return *this; + } + +#if _LIBCPP_STD_VER >= 23 + _LIBCPP_HIDE_FROM_ABI constexpr const __bit_reference& operator=(bool __x) const noexcept { + if (__x) + *__seg_ |= __mask_; + else + *__seg_ &= ~__mask_; + return *this; + } +#endif + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_reference& operator=(const __bit_reference& __x) _NOEXCEPT + {return operator=(static_cast(__x));} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 void flip() _NOEXCEPT {*__seg_ ^= __mask_;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, false> operator&() const _NOEXCEPT + {return __bit_iterator<_Cp, false>(__seg_, static_cast(std::__libcpp_ctz(__mask_)));} +private: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + explicit __bit_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT + : __seg_(__s), __mask_(__m) {} +}; + +template +class __bit_reference<_Cp, false> +{ +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +swap(__bit_reference<_Cp> __x, __bit_reference<_Cp> __y) _NOEXCEPT +{ + bool __t = __x; + __x = __y; + __y = __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +swap(__bit_reference<_Cp> __x, __bit_reference<_Dp> __y) _NOEXCEPT +{ + bool __t = __x; + __x = __y; + __y = __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +swap(__bit_reference<_Cp> __x, bool& __y) _NOEXCEPT +{ + bool __t = __x; + __x = __y; + __y = __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +swap(bool& __x, __bit_reference<_Cp> __y) _NOEXCEPT +{ + bool __t = __x; + __x = __y; + __y = __t; +} + +template +class __bit_const_reference +{ + typedef typename _Cp::__storage_type __storage_type; + typedef typename _Cp::__const_storage_pointer __storage_pointer; + + __storage_pointer __seg_; + __storage_type __mask_; + + friend typename _Cp::__self; + friend class __bit_iterator<_Cp, true>; +public: + using __container = typename _Cp::__self; + + _LIBCPP_INLINE_VISIBILITY + __bit_const_reference(const __bit_const_reference&) = default; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_const_reference(const __bit_reference<_Cp>& __x) _NOEXCEPT + : __seg_(__x.__seg_), __mask_(__x.__mask_) {} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR operator bool() const _NOEXCEPT + {return static_cast(*__seg_ & __mask_);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, true> operator&() const _NOEXCEPT + {return __bit_iterator<_Cp, true>(__seg_, static_cast(std::__libcpp_ctz(__mask_)));} +private: + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR + explicit __bit_const_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT + : __seg_(__s), __mask_(__m) {} + + __bit_const_reference& operator=(const __bit_const_reference&) = delete; +}; + +// find + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, _IsConst> +__find_bool_true(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, _IsConst> _It; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __storage_type __b = *__first.__seg_ & __m; + if (__b) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(__b))); + if (__n == __dn) + return __first + __n; + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) + if (*__first.__seg_) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(*__first.__seg_))); + // do last partial word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b = *__first.__seg_ & __m; + if (__b) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(__b))); + } + return _It(__first.__seg_, static_cast(__n)); +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, _IsConst> +__find_bool_false(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, _IsConst> _It; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __storage_type __b = ~*__first.__seg_ & __m; + if (__b) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(__b))); + if (__n == __dn) + return __first + __n; + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) + { + __storage_type __b = ~*__first.__seg_; + if (__b) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(__b))); + } + // do last partial word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b = ~*__first.__seg_ & __m; + if (__b) + return _It(__first.__seg_, static_cast(_VSTD::__libcpp_ctz(__b))); + } + return _It(__first.__seg_, static_cast(__n)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__bit_iterator<_Cp, _IsConst> +find(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value) +{ + if (static_cast(__value)) + return _VSTD::__find_bool_true(__first, static_cast(__last - __first)); + return _VSTD::__find_bool_false(__first, static_cast(__last - __first)); +} + +// count + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 typename __bit_iterator<_Cp, _IsConst>::difference_type +__count_bool_true(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, _IsConst> _It; + typedef typename _It::__storage_type __storage_type; + typedef typename _It::difference_type difference_type; + const int __bits_per_word = _It::__bits_per_word; + difference_type __r = 0; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __r = _VSTD::__libcpp_popcount(*__first.__seg_ & __m); + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) + __r += _VSTD::__libcpp_popcount(*__first.__seg_); + // do last partial word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __r += _VSTD::__libcpp_popcount(*__first.__seg_ & __m); + } + return __r; +} + +template +_LIBCPP_HIDE_FROM_ABI typename __bit_iterator<_Cp, _IsConst>::difference_type +__count_bool_false(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, _IsConst> _It; + typedef typename _It::__storage_type __storage_type; + typedef typename _It::difference_type difference_type; + const int __bits_per_word = _It::__bits_per_word; + difference_type __r = 0; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __r = _VSTD::__libcpp_popcount(~*__first.__seg_ & __m); + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) + __r += _VSTD::__libcpp_popcount(~*__first.__seg_); + // do last partial word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __r += _VSTD::__libcpp_popcount(~*__first.__seg_ & __m); + } + return __r; +} + +template +inline _LIBCPP_INLINE_VISIBILITY +typename __bit_iterator<_Cp, _IsConst>::difference_type +count(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value) +{ + if (static_cast(__value)) + return _VSTD::__count_bool_true(__first, static_cast(__last - __first)); + return _VSTD::__count_bool_false(__first, static_cast(__last - __first)); +} + +// fill_n + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void +__fill_n_false(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, false> _It; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + *__first.__seg_ &= ~__m; + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + __storage_type __nw = __n / __bits_per_word; + std::fill_n(std::__to_address(__first.__seg_), __nw, 0); + __n -= __nw * __bits_per_word; + // do last partial word + if (__n > 0) + { + __first.__seg_ += __nw; + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + *__first.__seg_ &= ~__m; + } +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void +__fill_n_true(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n) +{ + typedef __bit_iterator<_Cp, false> _It; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + // do first partial word + if (__first.__ctz_ != 0) + { + __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); + __storage_type __dn = _VSTD::min(__clz_f, __n); + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + *__first.__seg_ |= __m; + __n -= __dn; + ++__first.__seg_; + } + // do middle whole words + __storage_type __nw = __n / __bits_per_word; + // __storage_type is always an unsigned type, so -1 sets all bits + std::fill_n(std::__to_address(__first.__seg_), __nw, static_cast<__storage_type>(-1)); + __n -= __nw * __bits_per_word; + // do last partial word + if (__n > 0) + { + __first.__seg_ += __nw; + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + *__first.__seg_ |= __m; + } +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +fill_n(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n, bool __value) +{ + if (__n > 0) + { + if (__value) + _VSTD::__fill_n_true(__first, __n); + else + _VSTD::__fill_n_false(__first, __n); + } +} + +// fill + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +void +fill(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __last, bool __value) +{ + _VSTD::fill_n(__first, static_cast(__last - __first), __value); +} + +// copy + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false> +__copy_aligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, + __bit_iterator<_Cp, false> __result) +{ + typedef __bit_iterator<_Cp, _IsConst> _In; + typedef typename _In::difference_type difference_type; + typedef typename _In::__storage_type __storage_type; + const int __bits_per_word = _In::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__first.__ctz_ != 0) + { + unsigned __clz = __bits_per_word - __first.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); + __storage_type __b = *__first.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b; + __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__dn + __result.__ctz_) % __bits_per_word); + ++__first.__seg_; + // __first.__ctz_ = 0; + } + // __first.__ctz_ == 0; + // do middle words + __storage_type __nw = __n / __bits_per_word; + std::copy_n(std::__to_address(__first.__seg_), __nw, std::__to_address(__result.__seg_)); + __n -= __nw * __bits_per_word; + __result.__seg_ += __nw; + // do last word + if (__n > 0) + { + __first.__seg_ += __nw; + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b = *__first.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b; + __result.__ctz_ = static_cast(__n); + } + } + return __result; +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false> +__copy_unaligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, + __bit_iterator<_Cp, false> __result) +{ + typedef __bit_iterator<_Cp, _IsConst> _In; + typedef typename _In::difference_type difference_type; + typedef typename _In::__storage_type __storage_type; + const int __bits_per_word = _In::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__first.__ctz_ != 0) + { + unsigned __clz_f = __bits_per_word - __first.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz_f), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __storage_type __b = *__first.__seg_ & __m; + unsigned __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); + __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); + *__result.__seg_ &= ~__m; + if (__result.__ctz_ > __first.__ctz_) + *__result.__seg_ |= __b << (__result.__ctz_ - __first.__ctz_); + else + *__result.__seg_ |= __b >> (__first.__ctz_ - __result.__ctz_); + __result.__seg_ += (__ddn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__ddn + __result.__ctz_) % __bits_per_word); + __dn -= __ddn; + if (__dn > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __dn); + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b >> (__first.__ctz_ + __ddn); + __result.__ctz_ = static_cast(__dn); + } + ++__first.__seg_; + // __first.__ctz_ = 0; + } + // __first.__ctz_ == 0; + // do middle words + unsigned __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __m = ~__storage_type(0) << __result.__ctz_; + for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_) + { + __storage_type __b = *__first.__seg_; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b << __result.__ctz_; + ++__result.__seg_; + *__result.__seg_ &= __m; + *__result.__seg_ |= __b >> __clz_r; + } + // do last word + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b = *__first.__seg_ & __m; + __storage_type __dn = _VSTD::min(__n, static_cast(__clz_r)); + __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b << __result.__ctz_; + __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__dn + __result.__ctz_) % __bits_per_word); + __n -= __dn; + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b >> __dn; + __result.__ctz_ = static_cast(__n); + } + } + } + return __result; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__bit_iterator<_Cp, false> +copy(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) +{ + if (__first.__ctz_ == __result.__ctz_) + return _VSTD::__copy_aligned(__first, __last, __result); + return _VSTD::__copy_unaligned(__first, __last, __result); +} + +// copy_backward + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false> +__copy_backward_aligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, + __bit_iterator<_Cp, false> __result) +{ + typedef __bit_iterator<_Cp, _IsConst> _In; + typedef typename _In::difference_type difference_type; + typedef typename _In::__storage_type __storage_type; + const int __bits_per_word = _In::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__last.__ctz_ != 0) + { + difference_type __dn = _VSTD::min(static_cast(__last.__ctz_), __n); + __n -= __dn; + unsigned __clz = __bits_per_word - __last.__ctz_; + __storage_type __m = (~__storage_type(0) << (__last.__ctz_ - __dn)) & (~__storage_type(0) >> __clz); + __storage_type __b = *__last.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b; + __result.__ctz_ = static_cast(((-__dn & (__bits_per_word - 1)) + + __result.__ctz_) % __bits_per_word); + // __last.__ctz_ = 0 + } + // __last.__ctz_ == 0 || __n == 0 + // __result.__ctz_ == 0 || __n == 0 + // do middle words + __storage_type __nw = __n / __bits_per_word; + __result.__seg_ -= __nw; + __last.__seg_ -= __nw; + std::copy_n(std::__to_address(__last.__seg_), __nw, std::__to_address(__result.__seg_)); + __n -= __nw * __bits_per_word; + // do last word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) << (__bits_per_word - __n); + __storage_type __b = *--__last.__seg_ & __m; + *--__result.__seg_ &= ~__m; + *__result.__seg_ |= __b; + __result.__ctz_ = static_cast(-__n & (__bits_per_word - 1)); + } + } + return __result; +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false> +__copy_backward_unaligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, + __bit_iterator<_Cp, false> __result) +{ + typedef __bit_iterator<_Cp, _IsConst> _In; + typedef typename _In::difference_type difference_type; + typedef typename _In::__storage_type __storage_type; + const int __bits_per_word = _In::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__last.__ctz_ != 0) + { + difference_type __dn = _VSTD::min(static_cast(__last.__ctz_), __n); + __n -= __dn; + unsigned __clz_l = __bits_per_word - __last.__ctz_; + __storage_type __m = (~__storage_type(0) << (__last.__ctz_ - __dn)) & (~__storage_type(0) >> __clz_l); + __storage_type __b = *__last.__seg_ & __m; + unsigned __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __ddn = _VSTD::min(__dn, static_cast(__result.__ctz_)); + if (__ddn > 0) + { + __m = (~__storage_type(0) << (__result.__ctz_ - __ddn)) & (~__storage_type(0) >> __clz_r); + *__result.__seg_ &= ~__m; + if (__result.__ctz_ > __last.__ctz_) + *__result.__seg_ |= __b << (__result.__ctz_ - __last.__ctz_); + else + *__result.__seg_ |= __b >> (__last.__ctz_ - __result.__ctz_); + __result.__ctz_ = static_cast(((-__ddn & (__bits_per_word - 1)) + + __result.__ctz_) % __bits_per_word); + __dn -= __ddn; + } + if (__dn > 0) + { + // __result.__ctz_ == 0 + --__result.__seg_; + __result.__ctz_ = static_cast(-__dn & (__bits_per_word - 1)); + __m = ~__storage_type(0) << __result.__ctz_; + *__result.__seg_ &= ~__m; + __last.__ctz_ -= __dn + __ddn; + *__result.__seg_ |= __b << (__result.__ctz_ - __last.__ctz_); + } + // __last.__ctz_ = 0 + } + // __last.__ctz_ == 0 || __n == 0 + // __result.__ctz_ != 0 || __n == 0 + // do middle words + unsigned __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __m = ~__storage_type(0) >> __clz_r; + for (; __n >= __bits_per_word; __n -= __bits_per_word) + { + __storage_type __b = *--__last.__seg_; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b >> __clz_r; + *--__result.__seg_ &= __m; + *__result.__seg_ |= __b << __result.__ctz_; + } + // do last word + if (__n > 0) + { + __m = ~__storage_type(0) << (__bits_per_word - __n); + __storage_type __b = *--__last.__seg_ & __m; + __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __dn = _VSTD::min(__n, static_cast(__result.__ctz_)); + __m = (~__storage_type(0) << (__result.__ctz_ - __dn)) & (~__storage_type(0) >> __clz_r); + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b >> (__bits_per_word - __result.__ctz_); + __result.__ctz_ = static_cast(((-__dn & (__bits_per_word - 1)) + + __result.__ctz_) % __bits_per_word); + __n -= __dn; + if (__n > 0) + { + // __result.__ctz_ == 0 + --__result.__seg_; + __result.__ctz_ = static_cast(-__n & (__bits_per_word - 1)); + __m = ~__storage_type(0) << __result.__ctz_; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b << (__result.__ctz_ - (__bits_per_word - __n - __dn)); + } + } + } + return __result; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__bit_iterator<_Cp, false> +copy_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) +{ + if (__last.__ctz_ == __result.__ctz_) + return _VSTD::__copy_backward_aligned(__first, __last, __result); + return _VSTD::__copy_backward_unaligned(__first, __last, __result); +} + +// move + +template +inline _LIBCPP_INLINE_VISIBILITY +__bit_iterator<_Cp, false> +move(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) +{ + return _VSTD::copy(__first, __last, __result); +} + +// move_backward + +template +inline _LIBCPP_INLINE_VISIBILITY +__bit_iterator<_Cp, false> +move_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) +{ + return _VSTD::copy_backward(__first, __last, __result); +} + +// swap_ranges + +template +_LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cr, false> +__swap_ranges_aligned(__bit_iterator<_Cl, false> __first, __bit_iterator<_Cl, false> __last, + __bit_iterator<_Cr, false> __result) +{ + typedef __bit_iterator<_Cl, false> _I1; + typedef typename _I1::difference_type difference_type; + typedef typename _I1::__storage_type __storage_type; + const int __bits_per_word = _I1::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__first.__ctz_ != 0) + { + unsigned __clz = __bits_per_word - __first.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); + __storage_type __b1 = *__first.__seg_ & __m; + *__first.__seg_ &= ~__m; + __storage_type __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b1; + *__first.__seg_ |= __b2; + __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__dn + __result.__ctz_) % __bits_per_word); + ++__first.__seg_; + // __first.__ctz_ = 0; + } + // __first.__ctz_ == 0; + // do middle words + for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_, ++__result.__seg_) + swap(*__first.__seg_, *__result.__seg_); + // do last word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b1 = *__first.__seg_ & __m; + *__first.__seg_ &= ~__m; + __storage_type __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b1; + *__first.__seg_ |= __b2; + __result.__ctz_ = static_cast(__n); + } + } + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cr, false> +__swap_ranges_unaligned(__bit_iterator<_Cl, false> __first, __bit_iterator<_Cl, false> __last, + __bit_iterator<_Cr, false> __result) +{ + typedef __bit_iterator<_Cl, false> _I1; + typedef typename _I1::difference_type difference_type; + typedef typename _I1::__storage_type __storage_type; + const int __bits_per_word = _I1::__bits_per_word; + difference_type __n = __last - __first; + if (__n > 0) + { + // do first word + if (__first.__ctz_ != 0) + { + unsigned __clz_f = __bits_per_word - __first.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz_f), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __storage_type __b1 = *__first.__seg_ & __m; + *__first.__seg_ &= ~__m; + unsigned __clz_r = __bits_per_word - __result.__ctz_; + __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); + __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); + __storage_type __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + if (__result.__ctz_ > __first.__ctz_) + { + unsigned __s = __result.__ctz_ - __first.__ctz_; + *__result.__seg_ |= __b1 << __s; + *__first.__seg_ |= __b2 >> __s; + } + else + { + unsigned __s = __first.__ctz_ - __result.__ctz_; + *__result.__seg_ |= __b1 >> __s; + *__first.__seg_ |= __b2 << __s; + } + __result.__seg_ += (__ddn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__ddn + __result.__ctz_) % __bits_per_word); + __dn -= __ddn; + if (__dn > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __dn); + __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + unsigned __s = __first.__ctz_ + __ddn; + *__result.__seg_ |= __b1 >> __s; + *__first.__seg_ |= __b2 << __s; + __result.__ctz_ = static_cast(__dn); + } + ++__first.__seg_; + // __first.__ctz_ = 0; + } + // __first.__ctz_ == 0; + // do middle words + __storage_type __m = ~__storage_type(0) << __result.__ctz_; + unsigned __clz_r = __bits_per_word - __result.__ctz_; + for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_) + { + __storage_type __b1 = *__first.__seg_; + __storage_type __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b1 << __result.__ctz_; + *__first.__seg_ = __b2 >> __result.__ctz_; + ++__result.__seg_; + __b2 = *__result.__seg_ & ~__m; + *__result.__seg_ &= __m; + *__result.__seg_ |= __b1 >> __clz_r; + *__first.__seg_ |= __b2 << __clz_r; + } + // do last word + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b1 = *__first.__seg_ & __m; + *__first.__seg_ &= ~__m; + __storage_type __dn = _VSTD::min<__storage_type>(__n, __clz_r); + __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); + __storage_type __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b1 << __result.__ctz_; + *__first.__seg_ |= __b2 >> __result.__ctz_; + __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; + __result.__ctz_ = static_cast((__dn + __result.__ctz_) % __bits_per_word); + __n -= __dn; + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + __b2 = *__result.__seg_ & __m; + *__result.__seg_ &= ~__m; + *__result.__seg_ |= __b1 >> __dn; + *__first.__seg_ |= __b2 << __dn; + __result.__ctz_ = static_cast(__n); + } + } + } + return __result; +} + +template +inline _LIBCPP_INLINE_VISIBILITY +__bit_iterator<_Cr, false> +swap_ranges(__bit_iterator<_Cl, false> __first1, __bit_iterator<_Cl, false> __last1, + __bit_iterator<_Cr, false> __first2) +{ + if (__first1.__ctz_ == __first2.__ctz_) + return _VSTD::__swap_ranges_aligned(__first1, __last1, __first2); + return _VSTD::__swap_ranges_unaligned(__first1, __last1, __first2); +} + +// rotate + +template +struct __bit_array +{ + typedef typename _Cp::difference_type difference_type; + typedef typename _Cp::__storage_type __storage_type; + typedef typename _Cp::__storage_pointer __storage_pointer; + typedef typename _Cp::iterator iterator; + static const unsigned __bits_per_word = _Cp::__bits_per_word; + static const unsigned _Np = 4; + + difference_type __size_; + __storage_type __word_[_Np]; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 static difference_type capacity() + {return static_cast(_Np * __bits_per_word);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit __bit_array(difference_type __s) : __size_(__s) { + if (__libcpp_is_constant_evaluated()) { + for (size_t __i = 0; __i != __bit_array<_Cp>::_Np; ++__i) + std::__construct_at(__word_ + __i, 0); + } + } + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator begin() + { + return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]), 0); + } + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator end() + { + return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]) + __size_ / __bits_per_word, + static_cast(__size_ % __bits_per_word)); + } +}; + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false> +rotate(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __middle, __bit_iterator<_Cp, false> __last) +{ + typedef __bit_iterator<_Cp, false> _I1; + typedef typename _I1::difference_type difference_type; + difference_type __d1 = __middle - __first; + difference_type __d2 = __last - __middle; + _I1 __r = __first + __d2; + while (__d1 != 0 && __d2 != 0) + { + if (__d1 <= __d2) + { + if (__d1 <= __bit_array<_Cp>::capacity()) + { + __bit_array<_Cp> __b(__d1); + _VSTD::copy(__first, __middle, __b.begin()); + _VSTD::copy(__b.begin(), __b.end(), _VSTD::copy(__middle, __last, __first)); + break; + } + else + { + __bit_iterator<_Cp, false> __mp = _VSTD::swap_ranges(__first, __middle, __middle); + __first = __middle; + __middle = __mp; + __d2 -= __d1; + } + } + else + { + if (__d2 <= __bit_array<_Cp>::capacity()) + { + __bit_array<_Cp> __b(__d2); + _VSTD::copy(__middle, __last, __b.begin()); + _VSTD::copy_backward(__b.begin(), __b.end(), _VSTD::copy_backward(__first, __middle, __last)); + break; + } + else + { + __bit_iterator<_Cp, false> __mp = __first + __d2; + _VSTD::swap_ranges(__first, __mp, __middle); + __first = __mp; + __d1 -= __d2; + } + } + } + return __r; +} + +// equal + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI bool +__equal_unaligned(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, + __bit_iterator<_Cp, _IC2> __first2) +{ + typedef __bit_iterator<_Cp, _IC1> _It; + typedef typename _It::difference_type difference_type; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + difference_type __n = __last1 - __first1; + if (__n > 0) + { + // do first word + if (__first1.__ctz_ != 0) + { + unsigned __clz_f = __bits_per_word - __first1.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz_f), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first1.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); + __storage_type __b = *__first1.__seg_ & __m; + unsigned __clz_r = __bits_per_word - __first2.__ctz_; + __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); + __m = (~__storage_type(0) << __first2.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); + if (__first2.__ctz_ > __first1.__ctz_) + { + if ((*__first2.__seg_ & __m) != (__b << (__first2.__ctz_ - __first1.__ctz_))) + return false; + } + else + { + if ((*__first2.__seg_ & __m) != (__b >> (__first1.__ctz_ - __first2.__ctz_))) + return false; + } + __first2.__seg_ += (__ddn + __first2.__ctz_) / __bits_per_word; + __first2.__ctz_ = static_cast((__ddn + __first2.__ctz_) % __bits_per_word); + __dn -= __ddn; + if (__dn > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __dn); + if ((*__first2.__seg_ & __m) != (__b >> (__first1.__ctz_ + __ddn))) + return false; + __first2.__ctz_ = static_cast(__dn); + } + ++__first1.__seg_; + // __first1.__ctz_ = 0; + } + // __first1.__ctz_ == 0; + // do middle words + unsigned __clz_r = __bits_per_word - __first2.__ctz_; + __storage_type __m = ~__storage_type(0) << __first2.__ctz_; + for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first1.__seg_) + { + __storage_type __b = *__first1.__seg_; + if ((*__first2.__seg_ & __m) != (__b << __first2.__ctz_)) + return false; + ++__first2.__seg_; + if ((*__first2.__seg_ & ~__m) != (__b >> __clz_r)) + return false; + } + // do last word + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + __storage_type __b = *__first1.__seg_ & __m; + __storage_type __dn = _VSTD::min(__n, static_cast(__clz_r)); + __m = (~__storage_type(0) << __first2.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); + if ((*__first2.__seg_ & __m) != (__b << __first2.__ctz_)) + return false; + __first2.__seg_ += (__dn + __first2.__ctz_) / __bits_per_word; + __first2.__ctz_ = static_cast((__dn + __first2.__ctz_) % __bits_per_word); + __n -= __dn; + if (__n > 0) + { + __m = ~__storage_type(0) >> (__bits_per_word - __n); + if ((*__first2.__seg_ & __m) != (__b >> __dn)) + return false; + } + } + } + return true; +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI bool +__equal_aligned(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, + __bit_iterator<_Cp, _IC2> __first2) +{ + typedef __bit_iterator<_Cp, _IC1> _It; + typedef typename _It::difference_type difference_type; + typedef typename _It::__storage_type __storage_type; + const int __bits_per_word = _It::__bits_per_word; + difference_type __n = __last1 - __first1; + if (__n > 0) + { + // do first word + if (__first1.__ctz_ != 0) + { + unsigned __clz = __bits_per_word - __first1.__ctz_; + difference_type __dn = _VSTD::min(static_cast(__clz), __n); + __n -= __dn; + __storage_type __m = (~__storage_type(0) << __first1.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); + if ((*__first2.__seg_ & __m) != (*__first1.__seg_ & __m)) + return false; + ++__first2.__seg_; + ++__first1.__seg_; + // __first1.__ctz_ = 0; + // __first2.__ctz_ = 0; + } + // __first1.__ctz_ == 0; + // __first2.__ctz_ == 0; + // do middle words + for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first1.__seg_, ++__first2.__seg_) + if (*__first2.__seg_ != *__first1.__seg_) + return false; + // do last word + if (__n > 0) + { + __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); + if ((*__first2.__seg_ & __m) != (*__first1.__seg_ & __m)) + return false; + } + } + return true; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +bool +equal(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, __bit_iterator<_Cp, _IC2> __first2) +{ + if (__first1.__ctz_ == __first2.__ctz_) + return _VSTD::__equal_aligned(__first1, __last1, __first2); + return _VSTD::__equal_unaligned(__first1, __last1, __first2); +} + +template +class __bit_iterator +{ +public: + typedef typename _Cp::difference_type difference_type; + typedef bool value_type; + typedef __bit_iterator pointer; +#ifndef _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL + typedef __conditional_t<_IsConst, __bit_const_reference<_Cp>, __bit_reference<_Cp> > reference; +#else + using reference = __conditional_t<_IsConst, bool, __bit_reference<_Cp> >; +#endif + typedef random_access_iterator_tag iterator_category; + +private: + typedef typename _Cp::__storage_type __storage_type; + typedef __conditional_t<_IsConst, typename _Cp::__const_storage_pointer, typename _Cp::__storage_pointer> + __storage_pointer; + static const unsigned __bits_per_word = _Cp::__bits_per_word; + + __storage_pointer __seg_; + unsigned __ctz_; + +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator() _NOEXCEPT +#if _LIBCPP_STD_VER >= 14 + : __seg_(nullptr), __ctz_(0) +#endif + {} + + // When _IsConst=false, this is the copy constructor. + // It is non-trivial. Making it trivial would break ABI. + // When _IsConst=true, this is a converting constructor; + // the copy and move constructors are implicitly generated + // and trivial. + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_iterator(const __bit_iterator<_Cp, false>& __it) _NOEXCEPT + : __seg_(__it.__seg_), __ctz_(__it.__ctz_) {} + + // When _IsConst=false, we have a user-provided copy constructor, + // so we must also provide a copy assignment operator because + // the implicit generation of a defaulted one is deprecated. + // When _IsConst=true, the assignment operators are + // implicitly generated and trivial. + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __bit_iterator& operator=(const _If<_IsConst, struct __private_nat, __bit_iterator>& __it) { + __seg_ = __it.__seg_; + __ctz_ = __it.__ctz_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator*() const _NOEXCEPT { + return __conditional_t<_IsConst, __bit_const_reference<_Cp>, __bit_reference<_Cp> >( + __seg_, __storage_type(1) << __ctz_); + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator++() + { + if (__ctz_ != __bits_per_word-1) + ++__ctz_; + else + { + __ctz_ = 0; + ++__seg_; + } + return *this; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator++(int) + { + __bit_iterator __tmp = *this; + ++(*this); + return __tmp; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator--() + { + if (__ctz_ != 0) + --__ctz_; + else + { + __ctz_ = __bits_per_word - 1; + --__seg_; + } + return *this; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator--(int) + { + __bit_iterator __tmp = *this; + --(*this); + return __tmp; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator+=(difference_type __n) + { + if (__n >= 0) + __seg_ += (__n + __ctz_) / __bits_per_word; + else + __seg_ += static_cast(__n - __bits_per_word + __ctz_ + 1) + / static_cast(__bits_per_word); + __n &= (__bits_per_word - 1); + __ctz_ = static_cast((__n + __ctz_) % __bits_per_word); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator-=(difference_type __n) + { + return *this += -__n; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator+(difference_type __n) const + { + __bit_iterator __t(*this); + __t += __n; + return __t; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator-(difference_type __n) const + { + __bit_iterator __t(*this); + __t -= __n; + return __t; + } + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator operator+(difference_type __n, const __bit_iterator& __it) {return __it + __n;} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend difference_type operator-(const __bit_iterator& __x, const __bit_iterator& __y) + {return (__x.__seg_ - __y.__seg_) * __bits_per_word + __x.__ctz_ - __y.__ctz_;} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const {return *(*this + __n);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator==(const __bit_iterator& __x, const __bit_iterator& __y) + {return __x.__seg_ == __y.__seg_ && __x.__ctz_ == __y.__ctz_;} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator!=(const __bit_iterator& __x, const __bit_iterator& __y) + {return !(__x == __y);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<(const __bit_iterator& __x, const __bit_iterator& __y) + {return __x.__seg_ < __y.__seg_ || (__x.__seg_ == __y.__seg_ && __x.__ctz_ < __y.__ctz_);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>(const __bit_iterator& __x, const __bit_iterator& __y) + {return __y < __x;} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<=(const __bit_iterator& __x, const __bit_iterator& __y) + {return !(__y < __x);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>=(const __bit_iterator& __x, const __bit_iterator& __y) + {return !(__x < __y);} + +private: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + explicit __bit_iterator(__storage_pointer __s, unsigned __ctz) _NOEXCEPT + : __seg_(__s), __ctz_(__ctz) {} + + friend typename _Cp::__self; + + friend class __bit_reference<_Cp>; + friend class __bit_const_reference<_Cp>; + friend class __bit_iterator<_Cp, true>; + template friend struct __bit_array; + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend void __fill_n_false(__bit_iterator<_Dp, false> __first, typename _Dp::size_type __n); + + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend void __fill_n_true(__bit_iterator<_Dp, false> __first, typename _Dp::size_type __n); + + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> __copy_aligned(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> __copy_unaligned(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> copy(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> __copy_backward_aligned(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> __copy_backward_unaligned(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> copy_backward(__bit_iterator<_Dp, _IC> __first, + __bit_iterator<_Dp, _IC> __last, + __bit_iterator<_Dp, false> __result); + template friend __bit_iterator<_Cr, false> __swap_ranges_aligned(__bit_iterator<_Cl, false>, + __bit_iterator<_Cl, false>, + __bit_iterator<_Cr, false>); + template friend __bit_iterator<_Cr, false> __swap_ranges_unaligned(__bit_iterator<_Cl, false>, + __bit_iterator<_Cl, false>, + __bit_iterator<_Cr, false>); + template friend __bit_iterator<_Cr, false> swap_ranges(__bit_iterator<_Cl, false>, + __bit_iterator<_Cl, false>, + __bit_iterator<_Cr, false>); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, false> rotate(__bit_iterator<_Dp, false>, + __bit_iterator<_Dp, false>, + __bit_iterator<_Dp, false>); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend bool __equal_aligned(__bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC2>); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend bool __equal_unaligned(__bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC2>); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend bool equal(__bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC1>, + __bit_iterator<_Dp, _IC2>); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, _IC> __find_bool_true(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); + template + _LIBCPP_CONSTEXPR_SINCE_CXX20 + friend __bit_iterator<_Dp, _IC> __find_bool_false(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); + template friend typename __bit_iterator<_Dp, _IC>::difference_type + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 + __count_bool_true(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); + template friend typename __bit_iterator<_Dp, _IC>::difference_type + __count_bool_false(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___BIT_REFERENCE diff --git a/lib/libcxx/include/__charconv/chars_format.h b/lib/libcxx/include/__charconv/chars_format.h new file mode 100644 index 0000000..0e781c0 --- /dev/null +++ b/lib/libcxx/include/__charconv/chars_format.h @@ -0,0 +1,64 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_CHARS_FORMAT_H +#define _LIBCPP___CHARCONV_CHARS_FORMAT_H + +#include <__config> +#include <__utility/to_underlying.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +enum class _LIBCPP_ENUM_VIS chars_format { scientific = 0x1, fixed = 0x2, hex = 0x4, general = fixed | scientific }; + +inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator~(chars_format __x) { + return chars_format(~std::__to_underlying(__x)); +} + +inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator&(chars_format __x, chars_format __y) { + return chars_format(std::__to_underlying(__x) & std::__to_underlying(__y)); +} + +inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator|(chars_format __x, chars_format __y) { + return chars_format(std::__to_underlying(__x) | std::__to_underlying(__y)); +} + +inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator^(chars_format __x, chars_format __y) { + return chars_format(std::__to_underlying(__x) ^ std::__to_underlying(__y)); +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format& +operator&=(chars_format& __x, chars_format __y) { + __x = __x & __y; + return __x; +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format& +operator|=(chars_format& __x, chars_format __y) { + __x = __x | __y; + return __x; +} + +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format& +operator^=(chars_format& __x, chars_format __y) { + __x = __x ^ __y; + return __x; +} + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_CHARS_FORMAT_H diff --git a/lib/libcxx/include/__charconv/from_chars_integral.h b/lib/libcxx/include/__charconv/from_chars_integral.h new file mode 100644 index 0000000..acfdf4b --- /dev/null +++ b/lib/libcxx/include/__charconv/from_chars_integral.h @@ -0,0 +1,239 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_FROM_CHARS_INTEGRAL_H +#define _LIBCPP___CHARCONV_FROM_CHARS_INTEGRAL_H + +#include <__algorithm/copy_n.h> +#include <__charconv/from_chars_result.h> +#include <__charconv/traits.h> +#include <__config> +#include <__memory/addressof.h> +#include <__system_error/errc.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_integral.h> +#include <__type_traits/is_unsigned.h> +#include <__type_traits/make_unsigned.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +from_chars_result from_chars(const char*, const char*, bool, int = 10) = delete; + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__sign_combinator(_It __first, _It __last, _Tp& __value, _Fn __f, _Ts... __args) { + using __tl = numeric_limits<_Tp>; + decltype(std::__to_unsigned_like(__value)) __x; + + bool __neg = (__first != __last && *__first == '-'); + auto __r = __f(__neg ? __first + 1 : __first, __last, __x, __args...); + switch (__r.ec) { + case errc::invalid_argument: + return {__first, __r.ec}; + case errc::result_out_of_range: + return __r; + default: + break; + } + + if (__neg) { + if (__x <= std::__complement(std::__to_unsigned_like(__tl::min()))) { + __x = std::__complement(__x); + std::copy_n(std::addressof(__x), 1, std::addressof(__value)); + return __r; + } + } else { + if (__x <= std::__to_unsigned_like(__tl::max())) { + __value = __x; + return __r; + } + } + + return {__r.ptr, errc::result_out_of_range}; +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool __in_pattern(_Tp __c) { + return '0' <= __c && __c <= '9'; +} + +struct _LIBCPP_HIDDEN __in_pattern_result { + bool __ok; + int __val; + + explicit _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI operator bool() const { return __ok; } +}; + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI __in_pattern_result __in_pattern(_Tp __c, int __base) { + if (__base <= 10) + return {'0' <= __c && __c < '0' + __base, __c - '0'}; + else if (std::__in_pattern(__c)) + return {true, __c - '0'}; + else if ('a' <= __c && __c < 'a' + __base - 10) + return {true, __c - 'a' + 10}; + else + return {'A' <= __c && __c < 'A' + __base - 10, __c - 'A' + 10}; +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__subject_seq_combinator(_It __first, _It __last, _Tp& __value, _Fn __f, _Ts... __args) { + auto __find_non_zero = [](_It __firstit, _It __lastit) { + for (; __firstit != __lastit; ++__firstit) + if (*__firstit != '0') + break; + return __firstit; + }; + + auto __p = __find_non_zero(__first, __last); + if (__p == __last || !std::__in_pattern(*__p, __args...)) { + if (__p == __first) + return {__first, errc::invalid_argument}; + else { + __value = 0; + return {__p, {}}; + } + } + + auto __r = __f(__p, __last, __value, __args...); + if (__r.ec == errc::result_out_of_range) { + for (; __r.ptr != __last; ++__r.ptr) { + if (!std::__in_pattern(*__r.ptr, __args...)) + break; + } + } + + return __r; +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__from_chars_atoi(const char* __first, const char* __last, _Tp& __value) { + using __tx = __itoa::__traits<_Tp>; + using __output_type = typename __tx::type; + + return std::__subject_seq_combinator( + __first, __last, __value, [](const char* __f, const char* __l, _Tp& __val) -> from_chars_result { + __output_type __a, __b; + auto __p = __tx::__read(__f, __l, __a, __b); + if (__p == __l || !std::__in_pattern(*__p)) { + __output_type __m = numeric_limits<_Tp>::max(); + if (__m >= __a && __m - __a >= __b) { + __val = __a + __b; + return {__p, {}}; + } + } + return {__p, errc::result_out_of_range}; + }); +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__from_chars_atoi(const char* __first, const char* __last, _Tp& __value) { + using __t = decltype(std::__to_unsigned_like(__value)); + return std::__sign_combinator(__first, __last, __value, __from_chars_atoi<__t>); +} + +/* +// Code used to generate __from_chars_log2f_lut. +#include +#include +#include + +int main() { + for (int i = 2; i <= 36; ++i) + std::cout << std::format("{},\n", log2f(i)); +} +*/ +/// log2f table for bases [2, 36]. +inline constexpr float __from_chars_log2f_lut[35] = { + 1, 1.5849625, 2, 2.321928, 2.5849626, 2.807355, 3, 3.169925, 3.321928, + 3.4594316, 3.5849626, 3.7004397, 3.807355, 3.9068906, 4, 4.087463, 4.169925, 4.2479277, + 4.321928, 4.3923173, 4.4594316, 4.523562, 4.5849624, 4.643856, 4.70044, 4.7548876, 4.807355, + 4.857981, 4.9068904, 4.9541965, 5, 5.044394, 5.087463, 5.129283, 5.169925}; + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__from_chars_integral(const char* __first, const char* __last, _Tp& __value, int __base) { + if (__base == 10) + return std::__from_chars_atoi(__first, __last, __value); + + return std::__subject_seq_combinator( + __first, + __last, + __value, + [](const char* __p, const char* __lastp, _Tp& __val, int __b) -> from_chars_result { + using __tl = numeric_limits<_Tp>; + // __base is always between 2 and 36 inclusive. + auto __digits = __tl::digits / __from_chars_log2f_lut[__b - 2]; + _Tp __x = __in_pattern(*__p++, __b).__val, __y = 0; + + for (int __i = 1; __p != __lastp; ++__i, ++__p) { + if (auto __c = __in_pattern(*__p, __b)) { + if (__i < __digits - 1) + __x = __x * __b + __c.__val; + else { + if (!__itoa::__mul_overflowed(__x, __b, __x)) + ++__p; + __y = __c.__val; + break; + } + } else + break; + } + + if (__p == __lastp || !__in_pattern(*__p, __b)) { + if (__tl::max() - __x >= __y) { + __val = __x + __y; + return {__p, {}}; + } + } + return {__p, errc::result_out_of_range}; + }, + __base); +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +__from_chars_integral(const char* __first, const char* __last, _Tp& __value, int __base) { + using __t = decltype(std::__to_unsigned_like(__value)); + return std::__sign_combinator(__first, __last, __value, __from_chars_integral<__t>, __base); +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +from_chars(const char* __first, const char* __last, _Tp& __value) { + return std::__from_chars_atoi(__first, __last, __value); +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result +from_chars(const char* __first, const char* __last, _Tp& __value, int __base) { + _LIBCPP_ASSERT_UNCATEGORIZED(2 <= __base && __base <= 36, "base not in [2, 36]"); + return std::__from_chars_integral(__first, __last, __value, __base); +} +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHARCONV_FROM_CHARS_INTEGRAL_H diff --git a/lib/libcxx/include/__charconv/from_chars_result.h b/lib/libcxx/include/__charconv/from_chars_result.h new file mode 100644 index 0000000..fa98616 --- /dev/null +++ b/lib/libcxx/include/__charconv/from_chars_result.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H +#define _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H + +#include <__config> +#include <__system_error/errc.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +struct _LIBCPP_EXPORTED_FROM_ABI from_chars_result { + const char* ptr; + errc ec; +# if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI friend bool operator==(const from_chars_result&, const from_chars_result&) = default; +# endif +}; + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H diff --git a/lib/libcxx/include/__charconv/tables.h b/lib/libcxx/include/__charconv/tables.h new file mode 100644 index 0000000..6b93536 --- /dev/null +++ b/lib/libcxx/include/__charconv/tables.h @@ -0,0 +1,163 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TABLES +#define _LIBCPP___CHARCONV_TABLES + +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +namespace __itoa { + +inline constexpr char __base_2_lut[64] = { + '0', '0', '0', '0', '0', '0', '0', '1', '0', '0', '1', '0', '0', '0', '1', '1', '0', '1', '0', '0', '0', '1', + '0', '1', '0', '1', '1', '0', '0', '1', '1', '1', '1', '0', '0', '0', '1', '0', '0', '1', '1', '0', '1', '0', + '1', '0', '1', '1', '1', '1', '0', '0', '1', '1', '0', '1', '1', '1', '1', '0', '1', '1', '1', '1'}; + +inline constexpr char __base_8_lut[128] = { + '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '1', '0', '1', '1', '1', '2', + '1', '3', '1', '4', '1', '5', '1', '6', '1', '7', '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', '2', '5', + '2', '6', '2', '7', '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '4', '0', + '4', '1', '4', '2', '4', '3', '4', '4', '4', '5', '4', '6', '4', '7', '5', '0', '5', '1', '5', '2', '5', '3', + '5', '4', '5', '5', '5', '6', '5', '7', '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', + '6', '7', '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', '7', '5', '7', '6', '7', '7'}; + +inline constexpr char __base_16_lut[512] = { + '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', '0', 'a', '0', + 'b', '0', 'c', '0', 'd', '0', 'e', '0', 'f', '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', '1', '5', '1', '6', + '1', '7', '1', '8', '1', '9', '1', 'a', '1', 'b', '1', 'c', '1', 'd', '1', 'e', '1', 'f', '2', '0', '2', '1', '2', + '2', '2', '3', '2', '4', '2', '5', '2', '6', '2', '7', '2', '8', '2', '9', '2', 'a', '2', 'b', '2', 'c', '2', 'd', + '2', 'e', '2', 'f', '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '3', '8', '3', + '9', '3', 'a', '3', 'b', '3', 'c', '3', 'd', '3', 'e', '3', 'f', '4', '0', '4', '1', '4', '2', '4', '3', '4', '4', + '4', '5', '4', '6', '4', '7', '4', '8', '4', '9', '4', 'a', '4', 'b', '4', 'c', '4', 'd', '4', 'e', '4', 'f', '5', + '0', '5', '1', '5', '2', '5', '3', '5', '4', '5', '5', '5', '6', '5', '7', '5', '8', '5', '9', '5', 'a', '5', 'b', + '5', 'c', '5', 'd', '5', 'e', '5', 'f', '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', '6', + '7', '6', '8', '6', '9', '6', 'a', '6', 'b', '6', 'c', '6', 'd', '6', 'e', '6', 'f', '7', '0', '7', '1', '7', '2', + '7', '3', '7', '4', '7', '5', '7', '6', '7', '7', '7', '8', '7', '9', '7', 'a', '7', 'b', '7', 'c', '7', 'd', '7', + 'e', '7', 'f', '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', '8', '5', '8', '6', '8', '7', '8', '8', '8', '9', + '8', 'a', '8', 'b', '8', 'c', '8', 'd', '8', 'e', '8', 'f', '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', '9', + '5', '9', '6', '9', '7', '9', '8', '9', '9', '9', 'a', '9', 'b', '9', 'c', '9', 'd', '9', 'e', '9', 'f', 'a', '0', + 'a', '1', 'a', '2', 'a', '3', 'a', '4', 'a', '5', 'a', '6', 'a', '7', 'a', '8', 'a', '9', 'a', 'a', 'a', 'b', 'a', + 'c', 'a', 'd', 'a', 'e', 'a', 'f', 'b', '0', 'b', '1', 'b', '2', 'b', '3', 'b', '4', 'b', '5', 'b', '6', 'b', '7', + 'b', '8', 'b', '9', 'b', 'a', 'b', 'b', 'b', 'c', 'b', 'd', 'b', 'e', 'b', 'f', 'c', '0', 'c', '1', 'c', '2', 'c', + '3', 'c', '4', 'c', '5', 'c', '6', 'c', '7', 'c', '8', 'c', '9', 'c', 'a', 'c', 'b', 'c', 'c', 'c', 'd', 'c', 'e', + 'c', 'f', 'd', '0', 'd', '1', 'd', '2', 'd', '3', 'd', '4', 'd', '5', 'd', '6', 'd', '7', 'd', '8', 'd', '9', 'd', + 'a', 'd', 'b', 'd', 'c', 'd', 'd', 'd', 'e', 'd', 'f', 'e', '0', 'e', '1', 'e', '2', 'e', '3', 'e', '4', 'e', '5', + 'e', '6', 'e', '7', 'e', '8', 'e', '9', 'e', 'a', 'e', 'b', 'e', 'c', 'e', 'd', 'e', 'e', 'e', 'f', 'f', '0', 'f', + '1', 'f', '2', 'f', '3', 'f', '4', 'f', '5', 'f', '6', 'f', '7', 'f', '8', 'f', '9', 'f', 'a', 'f', 'b', 'f', 'c', + 'f', 'd', 'f', 'e', 'f', 'f'}; + +inline constexpr uint32_t __pow10_32[10] = { + UINT32_C(0), + UINT32_C(10), + UINT32_C(100), + UINT32_C(1000), + UINT32_C(10000), + UINT32_C(100000), + UINT32_C(1000000), + UINT32_C(10000000), + UINT32_C(100000000), + UINT32_C(1000000000)}; + +inline constexpr uint64_t __pow10_64[20] = { + UINT64_C(0), + UINT64_C(10), + UINT64_C(100), + UINT64_C(1000), + UINT64_C(10000), + UINT64_C(100000), + UINT64_C(1000000), + UINT64_C(10000000), + UINT64_C(100000000), + UINT64_C(1000000000), + UINT64_C(10000000000), + UINT64_C(100000000000), + UINT64_C(1000000000000), + UINT64_C(10000000000000), + UINT64_C(100000000000000), + UINT64_C(1000000000000000), + UINT64_C(10000000000000000), + UINT64_C(100000000000000000), + UINT64_C(1000000000000000000), + UINT64_C(10000000000000000000)}; + +# ifndef _LIBCPP_HAS_NO_INT128 +inline constexpr int __pow10_128_offset = 0; +inline constexpr __uint128_t __pow10_128[40] = { + UINT64_C(0), + UINT64_C(10), + UINT64_C(100), + UINT64_C(1000), + UINT64_C(10000), + UINT64_C(100000), + UINT64_C(1000000), + UINT64_C(10000000), + UINT64_C(100000000), + UINT64_C(1000000000), + UINT64_C(10000000000), + UINT64_C(100000000000), + UINT64_C(1000000000000), + UINT64_C(10000000000000), + UINT64_C(100000000000000), + UINT64_C(1000000000000000), + UINT64_C(10000000000000000), + UINT64_C(100000000000000000), + UINT64_C(1000000000000000000), + UINT64_C(10000000000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000000000), + __uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000000), + (__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000000)) * 10}; +# endif + +inline constexpr char __digits_base_10[200] = { + // clang-format off + '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', + '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', '1', '5', '1', '6', '1', '7', '1', '8', '1', '9', + '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', '2', '5', '2', '6', '2', '7', '2', '8', '2', '9', + '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '3', '8', '3', '9', + '4', '0', '4', '1', '4', '2', '4', '3', '4', '4', '4', '5', '4', '6', '4', '7', '4', '8', '4', '9', + '5', '0', '5', '1', '5', '2', '5', '3', '5', '4', '5', '5', '5', '6', '5', '7', '5', '8', '5', '9', + '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', '6', '7', '6', '8', '6', '9', + '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', '7', '5', '7', '6', '7', '7', '7', '8', '7', '9', + '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', '8', '5', '8', '6', '8', '7', '8', '8', '8', '9', + '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', '9', '5', '9', '6', '9', '7', '9', '8', '9', '9'}; +// clang-format on + +} // namespace __itoa + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_TABLES diff --git a/lib/libcxx/include/__charconv/to_chars.h b/lib/libcxx/include/__charconv/to_chars.h new file mode 100644 index 0000000..8ef09af --- /dev/null +++ b/lib/libcxx/include/__charconv/to_chars.h @@ -0,0 +1,25 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TO_CHARS +#define _LIBCPP___CHARCONV_TO_CHARS + +#include <__charconv/to_chars_floating_point.h> +#include <__charconv/to_chars_integral.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_TO_CHARS diff --git a/lib/libcxx/include/__charconv/to_chars_base_10.h b/lib/libcxx/include/__charconv/to_chars_base_10.h new file mode 100644 index 0000000..33c512e --- /dev/null +++ b/lib/libcxx/include/__charconv/to_chars_base_10.h @@ -0,0 +1,187 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TO_CHARS_BASE_10_H +#define _LIBCPP___CHARCONV_TO_CHARS_BASE_10_H + +#include <__algorithm/copy_n.h> +#include <__charconv/tables.h> +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +namespace __itoa { + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append1(char* __first, uint32_t __value) noexcept { + *__first = '0' + static_cast(__value); + return __first + 1; +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append2(char* __first, uint32_t __value) noexcept { + return std::copy_n(&__digits_base_10[__value * 2], 2, __first); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append3(char* __first, uint32_t __value) noexcept { + return __itoa::__append2(__itoa::__append1(__first, __value / 100), __value % 100); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append4(char* __first, uint32_t __value) noexcept { + return __itoa::__append2(__itoa::__append2(__first, __value / 100), __value % 100); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append5(char* __first, uint32_t __value) noexcept { + return __itoa::__append4(__itoa::__append1(__first, __value / 10000), __value % 10000); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append6(char* __first, uint32_t __value) noexcept { + return __itoa::__append4(__itoa::__append2(__first, __value / 10000), __value % 10000); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append7(char* __first, uint32_t __value) noexcept { + return __itoa::__append6(__itoa::__append1(__first, __value / 1000000), __value % 1000000); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append8(char* __first, uint32_t __value) noexcept { + return __itoa::__append6(__itoa::__append2(__first, __value / 1000000), __value % 1000000); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append9(char* __first, uint32_t __value) noexcept { + return __itoa::__append8(__itoa::__append1(__first, __value / 100000000), __value % 100000000); +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __append10(char* __first, _Tp __value) noexcept { + return __itoa::__append8(__itoa::__append2(__first, static_cast(__value / 100000000)), + static_cast(__value % 100000000)); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* +__base_10_u32(char* __first, uint32_t __value) noexcept { + if (__value < 1000000) { + if (__value < 10000) { + if (__value < 100) { + // 0 <= __value < 100 + if (__value < 10) + return __itoa::__append1(__first, __value); + return __itoa::__append2(__first, __value); + } + // 100 <= __value < 10'000 + if (__value < 1000) + return __itoa::__append3(__first, __value); + return __itoa::__append4(__first, __value); + } + + // 10'000 <= __value < 1'000'000 + if (__value < 100000) + return __itoa::__append5(__first, __value); + return __itoa::__append6(__first, __value); + } + + // __value => 1'000'000 + if (__value < 100000000) { + // 1'000'000 <= __value < 100'000'000 + if (__value < 10000000) + return __itoa::__append7(__first, __value); + return __itoa::__append8(__first, __value); + } + + // 100'000'000 <= __value < max + if (__value < 1000000000) + return __itoa::__append9(__first, __value); + return __itoa::__append10(__first, __value); +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* +__base_10_u64(char* __buffer, uint64_t __value) noexcept { + if (__value <= UINT32_MAX) + return __itoa::__base_10_u32(__buffer, static_cast(__value)); + + // Numbers in the range UINT32_MAX <= val < 10'000'000'000 always contain 10 + // digits and are outputted after this if statement. + if (__value >= 10000000000) { + // This function properly deterimines the first non-zero leading digit. + __buffer = __itoa::__base_10_u32(__buffer, static_cast(__value / 10000000000)); + __value %= 10000000000; + } + return __itoa::__append10(__buffer, __value); +} + +# ifndef _LIBCPP_HAS_NO_INT128 +/// \returns 10^\a exp +/// +/// \pre \a exp [19, 39] +/// +/// \note The lookup table contains a partial set of exponents limiting the +/// range that can be used. However the range is sufficient for +/// \ref __base_10_u128. +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline __uint128_t __pow_10(int __exp) noexcept { + _LIBCPP_ASSERT_UNCATEGORIZED(__exp >= __pow10_128_offset, "Index out of bounds"); + return __pow10_128[__exp - __pow10_128_offset]; +} + +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* +__base_10_u128(char* __buffer, __uint128_t __value) noexcept { + _LIBCPP_ASSERT_UNCATEGORIZED( + __value > numeric_limits::max(), "The optimizations for this algorithm fail when this isn't true."); + + // Unlike the 64 to 32 bit case the 128 bit case the "upper half" can't be + // stored in the "lower half". Instead we first need to handle the top most + // digits separately. + // + // Maximum unsigned values + // 64 bit 18'446'744'073'709'551'615 (20 digits) + // 128 bit 340'282'366'920'938'463'463'374'607'431'768'211'455 (39 digits) + // step 1 ^ ([0-1] digits) + // step 2 ^^^^^^^^^^^^^^^^^^^^^^^^^ ([0-19] digits) + // step 3 ^^^^^^^^^^^^^^^^^^^^^^^^^ (19 digits) + if (__value >= __itoa::__pow_10(38)) { + // step 1 + __buffer = __itoa::__append1(__buffer, static_cast(__value / __itoa::__pow_10(38))); + __value %= __itoa::__pow_10(38); + + // step 2 always 19 digits. + // They are handled here since leading zeros need to be appended to the buffer, + __buffer = __itoa::__append9(__buffer, static_cast(__value / __itoa::__pow_10(29))); + __value %= __itoa::__pow_10(29); + __buffer = __itoa::__append10(__buffer, static_cast(__value / __itoa::__pow_10(19))); + __value %= __itoa::__pow_10(19); + } else { + // step 2 + // This version needs to determine the position of the leading non-zero digit. + __buffer = __base_10_u64(__buffer, static_cast(__value / __itoa::__pow_10(19))); + __value %= __itoa::__pow_10(19); + } + + // Step 3 + __buffer = __itoa::__append9(__buffer, static_cast(__value / 10000000000)); + __buffer = __itoa::__append10(__buffer, static_cast(__value % 10000000000)); + + return __buffer; +} +# endif +} // namespace __itoa + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHARCONV_TO_CHARS_BASE_10_H diff --git a/lib/libcxx/include/__charconv/to_chars_floating_point.h b/lib/libcxx/include/__charconv/to_chars_floating_point.h new file mode 100644 index 0000000..08720e1 --- /dev/null +++ b/lib/libcxx/include/__charconv/to_chars_floating_point.h @@ -0,0 +1,56 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TO_CHARS_FLOATING_POINT_H +#define _LIBCPP___CHARCONV_TO_CHARS_FLOATING_POINT_H + +#include <__availability> +#include <__charconv/chars_format.h> +#include <__charconv/to_chars_result.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, float __value); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, double __value); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, long double __value); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, float __value, chars_format __fmt); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, double __value, chars_format __fmt); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, long double __value, chars_format __fmt); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, float __value, chars_format __fmt, int __precision); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, double __value, chars_format __fmt, int __precision); + +_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_EXPORTED_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, long double __value, chars_format __fmt, int __precision); +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_TO_CHARS_FLOATING_POINT_H diff --git a/lib/libcxx/include/__charconv/to_chars_integral.h b/lib/libcxx/include/__charconv/to_chars_integral.h new file mode 100644 index 0000000..28fac75 --- /dev/null +++ b/lib/libcxx/include/__charconv/to_chars_integral.h @@ -0,0 +1,326 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TO_CHARS_INTEGRAL_H +#define _LIBCPP___CHARCONV_TO_CHARS_INTEGRAL_H + +#include <__algorithm/copy_n.h> +#include <__bit/countl.h> +#include <__charconv/tables.h> +#include <__charconv/to_chars_base_10.h> +#include <__charconv/to_chars_result.h> +#include <__charconv/traits.h> +#include <__config> +#include <__system_error/errc.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_same.h> +#include <__type_traits/make_32_64_or_128_bit.h> +#include <__type_traits/make_unsigned.h> +#include <__utility/unreachable.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +to_chars_result to_chars(char*, char*, bool, int = 10) = delete; + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_itoa(char* __first, char* __last, _Tp __value, false_type); + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_itoa(char* __first, char* __last, _Tp __value, true_type) { + auto __x = std::__to_unsigned_like(__value); + if (__value < 0 && __first != __last) { + *__first++ = '-'; + __x = std::__complement(__x); + } + + return std::__to_chars_itoa(__first, __last, __x, false_type()); +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_itoa(char* __first, char* __last, _Tp __value, false_type) { + using __tx = __itoa::__traits<_Tp>; + auto __diff = __last - __first; + + if (__tx::digits <= __diff || __tx::__width(__value) <= __diff) + return {__tx::__convert(__first, __value), errc(0)}; + else + return {__last, errc::value_too_large}; +} + +# ifndef _LIBCPP_HAS_NO_INT128 +template <> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_itoa(char* __first, char* __last, __uint128_t __value, false_type) { + // When the value fits in 64-bits use the 64-bit code path. This reduces + // the number of expensive calculations on 128-bit values. + // + // NOTE the 128-bit code path requires this optimization. + if (__value <= numeric_limits::max()) + return __to_chars_itoa(__first, __last, static_cast(__value), false_type()); + + using __tx = __itoa::__traits<__uint128_t>; + auto __diff = __last - __first; + + if (__tx::digits <= __diff || __tx::__width(__value) <= __diff) + return {__tx::__convert(__first, __value), errc(0)}; + else + return {__last, errc::value_too_large}; +} +# endif + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, false_type); + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, true_type) { + auto __x = std::__to_unsigned_like(__value); + if (__value < 0 && __first != __last) { + *__first++ = '-'; + __x = std::__complement(__x); + } + + return std::__to_chars_integral(__first, __last, __x, __base, false_type()); +} + +namespace __itoa { + +template +struct _LIBCPP_HIDDEN __integral; + +template <> +struct _LIBCPP_HIDDEN __integral<2> { + template + _LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept { + // If value == 0 still need one digit. If the value != this has no + // effect since the code scans for the most significant bit set. (Note + // that __libcpp_clz doesn't work for 0.) + return numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1); + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result + __to_chars(char* __first, char* __last, _Tp __value) { + ptrdiff_t __cap = __last - __first; + int __n = __width(__value); + if (__n > __cap) + return {__last, errc::value_too_large}; + + __last = __first + __n; + char* __p = __last; + const unsigned __divisor = 16; + while (__value > __divisor) { + unsigned __c = __value % __divisor; + __value /= __divisor; + __p -= 4; + std::copy_n(&__base_2_lut[4 * __c], 4, __p); + } + do { + unsigned __c = __value % 2; + __value /= 2; + *--__p = "01"[__c]; + } while (__value != 0); + return {__last, errc(0)}; + } +}; + +template <> +struct _LIBCPP_HIDDEN __integral<8> { + template + _LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept { + // If value == 0 still need one digit. If the value != this has no + // effect since the code scans for the most significat bit set. (Note + // that __libcpp_clz doesn't work for 0.) + return ((numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1)) + 2) / 3; + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result + __to_chars(char* __first, char* __last, _Tp __value) { + ptrdiff_t __cap = __last - __first; + int __n = __width(__value); + if (__n > __cap) + return {__last, errc::value_too_large}; + + __last = __first + __n; + char* __p = __last; + unsigned __divisor = 64; + while (__value > __divisor) { + unsigned __c = __value % __divisor; + __value /= __divisor; + __p -= 2; + std::copy_n(&__base_8_lut[2 * __c], 2, __p); + } + do { + unsigned __c = __value % 8; + __value /= 8; + *--__p = "01234567"[__c]; + } while (__value != 0); + return {__last, errc(0)}; + } +}; + +template <> +struct _LIBCPP_HIDDEN __integral<16> { + template + _LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept { + // If value == 0 still need one digit. If the value != this has no + // effect since the code scans for the most significat bit set. (Note + // that __libcpp_clz doesn't work for 0.) + return (numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1) + 3) / 4; + } + + template + _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result + __to_chars(char* __first, char* __last, _Tp __value) { + ptrdiff_t __cap = __last - __first; + int __n = __width(__value); + if (__n > __cap) + return {__last, errc::value_too_large}; + + __last = __first + __n; + char* __p = __last; + unsigned __divisor = 256; + while (__value > __divisor) { + unsigned __c = __value % __divisor; + __value /= __divisor; + __p -= 2; + std::copy_n(&__base_16_lut[2 * __c], 2, __p); + } + if (__first != __last) + do { + unsigned __c = __value % 16; + __value /= 16; + *--__p = "0123456789abcdef"[__c]; + } while (__value != 0); + return {__last, errc(0)}; + } +}; + +} // namespace __itoa + +template = sizeof(unsigned)), int>::type = 0> +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value) { + return __itoa::__integral<_Base>::__width(__value); +} + +template ::type = 0> +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value) { + return std::__to_chars_integral_width<_Base>(static_cast(__value)); +} + +template = sizeof(unsigned)), int>::type = 0> +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_integral(char* __first, char* __last, _Tp __value) { + return __itoa::__integral<_Base>::__to_chars(__first, __last, __value); +} + +template ::type = 0> +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_integral(char* __first, char* __last, _Tp __value) { + return std::__to_chars_integral<_Base>(__first, __last, static_cast(__value)); +} + +template +_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value, unsigned __base) { + _LIBCPP_ASSERT_UNCATEGORIZED(__value >= 0, "The function requires a non-negative value."); + + unsigned __base_2 = __base * __base; + unsigned __base_3 = __base_2 * __base; + unsigned __base_4 = __base_2 * __base_2; + + int __r = 0; + while (true) { + if (__value < __base) + return __r + 1; + if (__value < __base_2) + return __r + 2; + if (__value < __base_3) + return __r + 3; + if (__value < __base_4) + return __r + 4; + + __value /= __base_4; + __r += 4; + } + + __libcpp_unreachable(); +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, false_type) { + if (__base == 10) [[likely]] + return std::__to_chars_itoa(__first, __last, __value, false_type()); + + switch (__base) { + case 2: + return std::__to_chars_integral<2>(__first, __last, __value); + case 8: + return std::__to_chars_integral<8>(__first, __last, __value); + case 16: + return std::__to_chars_integral<16>(__first, __last, __value); + } + + ptrdiff_t __cap = __last - __first; + int __n = std::__to_chars_integral_width(__value, __base); + if (__n > __cap) + return {__last, errc::value_too_large}; + + __last = __first + __n; + char* __p = __last; + do { + unsigned __c = __value % __base; + __value /= __base; + *--__p = "0123456789abcdefghijklmnopqrstuvwxyz"[__c]; + } while (__value != 0); + return {__last, errc(0)}; +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, _Tp __value) { + using _Type = __make_32_64_or_128_bit_t<_Tp>; + static_assert(!is_same<_Type, void>::value, "unsupported integral type used in to_chars"); + return std::__to_chars_itoa(__first, __last, static_cast<_Type>(__value), is_signed<_Tp>()); +} + +template ::value, int>::type = 0> +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result +to_chars(char* __first, char* __last, _Tp __value, int __base) { + _LIBCPP_ASSERT_UNCATEGORIZED(2 <= __base && __base <= 36, "base not in [2, 36]"); + + using _Type = __make_32_64_or_128_bit_t<_Tp>; + return std::__to_chars_integral(__first, __last, static_cast<_Type>(__value), __base, is_signed<_Tp>()); +} + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHARCONV_TO_CHARS_INTEGRAL_H diff --git a/lib/libcxx/include/__charconv/to_chars_result.h b/lib/libcxx/include/__charconv/to_chars_result.h new file mode 100644 index 0000000..aba5e5f --- /dev/null +++ b/lib/libcxx/include/__charconv/to_chars_result.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TO_CHARS_RESULT_H +#define _LIBCPP___CHARCONV_TO_CHARS_RESULT_H + +#include <__config> +#include <__system_error/errc.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +struct _LIBCPP_EXPORTED_FROM_ABI to_chars_result { + char* ptr; + errc ec; +# if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI friend bool operator==(const to_chars_result&, const to_chars_result&) = default; +# endif +}; + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHARCONV_TO_CHARS_RESULT_H diff --git a/lib/libcxx/include/__charconv/traits.h b/lib/libcxx/include/__charconv/traits.h new file mode 100644 index 0000000..d3884b5 --- /dev/null +++ b/lib/libcxx/include/__charconv/traits.h @@ -0,0 +1,199 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHARCONV_TRAITS +#define _LIBCPP___CHARCONV_TRAITS + +#include <__bit/countl.h> +#include <__charconv/tables.h> +#include <__charconv/to_chars_base_10.h> +#include <__config> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_unsigned.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +namespace __itoa { + +template +struct _LIBCPP_HIDDEN __traits_base; + +template +struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t> { + using type = uint32_t; + + /// The width estimation using a log10 algorithm. + /// + /// The algorithm is based on + /// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 + /// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that + /// function requires its input to have at least one bit set the value of + /// zero is set to one. This means the first element of the lookup table is + /// zero. + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) { + auto __t = (32 - std::__libcpp_clz(static_cast(__v | 1))) * 1233 >> 12; + return __t - (__v < __itoa::__pow10_32[__t]) + 1; + } + + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) { + return __itoa::__base_10_u32(__p, __v); + } + + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_32)& __pow() { + return __itoa::__pow10_32; + } +}; + +template +struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t> { + using type = uint64_t; + + /// The width estimation using a log10 algorithm. + /// + /// The algorithm is based on + /// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 + /// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that + /// function requires its input to have at least one bit set the value of + /// zero is set to one. This means the first element of the lookup table is + /// zero. + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) { + auto __t = (64 - std::__libcpp_clz(static_cast(__v | 1))) * 1233 >> 12; + return __t - (__v < __itoa::__pow10_64[__t]) + 1; + } + + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) { + return __itoa::__base_10_u64(__p, __v); + } + + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_64)& __pow() { + return __itoa::__pow10_64; + } +}; + +# ifndef _LIBCPP_HAS_NO_INT128 +template +struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t > { + using type = __uint128_t; + + /// The width estimation using a log10 algorithm. + /// + /// The algorithm is based on + /// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 + /// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that + /// function requires its input to have at least one bit set the value of + /// zero is set to one. This means the first element of the lookup table is + /// zero. + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) { + _LIBCPP_ASSERT_UNCATEGORIZED( + __v > numeric_limits::max(), "The optimizations for this algorithm fail when this isn't true."); + // There's always a bit set in the upper 64-bits. + auto __t = (128 - std::__libcpp_clz(static_cast(__v >> 64))) * 1233 >> 12; + _LIBCPP_ASSERT_UNCATEGORIZED(__t >= __itoa::__pow10_128_offset, "Index out of bounds"); + // __t is adjusted since the lookup table misses the lower entries. + return __t - (__v < __itoa::__pow10_128[__t - __itoa::__pow10_128_offset]) + 1; + } + + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) { + return __itoa::__base_10_u128(__p, __v); + } + + // TODO FMT This pow function should get an index. + // By moving this to its own header it can be reused by the pow function in to_chars_base_10. + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_128)& __pow() { + return __itoa::__pow10_128; + } +}; +# endif + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool +__mul_overflowed(unsigned char __a, _Tp __b, unsigned char& __r) { + auto __c = __a * __b; + __r = __c; + return __c > numeric_limits::max(); +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool +__mul_overflowed(unsigned short __a, _Tp __b, unsigned short& __r) { + auto __c = __a * __b; + __r = __c; + return __c > numeric_limits::max(); +} + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool __mul_overflowed(_Tp __a, _Tp __b, _Tp& __r) { + static_assert(is_unsigned<_Tp>::value, ""); + return __builtin_mul_overflow(__a, __b, &__r); +} + +template +inline _LIBCPP_HIDE_FROM_ABI bool _LIBCPP_CONSTEXPR_SINCE_CXX23 __mul_overflowed(_Tp __a, _Up __b, _Tp& __r) { + return __itoa::__mul_overflowed(__a, static_cast<_Tp>(__b), __r); +} + +template +struct _LIBCPP_HIDDEN __traits : __traits_base<_Tp> { + static constexpr int digits = numeric_limits<_Tp>::digits10 + 1; + using __traits_base<_Tp>::__pow; + using typename __traits_base<_Tp>::type; + + // precondition: at least one non-zero character available + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char const* + __read(char const* __p, char const* __ep, type& __a, type& __b) { + type __cprod[digits]; + int __j = digits - 1; + int __i = digits; + do { + if (*__p < '0' || *__p > '9') + break; + __cprod[--__i] = *__p++ - '0'; + } while (__p != __ep && __i != 0); + + __a = __inner_product(__cprod + __i + 1, __cprod + __j, __pow() + 1, __cprod[__i]); + if (__itoa::__mul_overflowed(__cprod[__j], __pow()[__j - __i], __b)) + --__p; + return __p; + } + + template + static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI _Up + __inner_product(_It1 __first1, _It1 __last1, _It2 __first2, _Up __init) { + for (; __first1 < __last1; ++__first1, ++__first2) + __init = __init + *__first1 * *__first2; + return __init; + } +}; + +} // namespace __itoa + +template +inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI _Tp __complement(_Tp __x) { + static_assert(is_unsigned<_Tp>::value, "cast to unsigned first"); + return _Tp(~__x + 1); +} + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHARCONV_TRAITS diff --git a/lib/libcxx/include/__chrono/calendar.h b/lib/libcxx/include/__chrono/calendar.h new file mode 100644 index 0000000..91aaf63 --- /dev/null +++ b/lib/libcxx/include/__chrono/calendar.h @@ -0,0 +1,44 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_CALENDAR_H +#define _LIBCPP___CHRONO_CALENDAR_H + +#include <__chrono/duration.h> +#include <__chrono/time_point.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +struct local_t {}; +template +using local_time = time_point; +using local_seconds = local_time; +using local_days = local_time; + +struct last_spec { explicit last_spec() = default; }; +inline constexpr last_spec last{}; + + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_CALENDAR_H diff --git a/lib/libcxx/include/__chrono/concepts.h b/lib/libcxx/include/__chrono/concepts.h new file mode 100644 index 0000000..61ec256 --- /dev/null +++ b/lib/libcxx/include/__chrono/concepts.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_CONCEPTS_H +#define _LIBCPP___CHRONO_CONCEPTS_H + +#include <__chrono/hh_mm_ss.h> +#include <__chrono/time_point.h> +#include <__config> +#include <__type_traits/is_specialization.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept __is_hh_mm_ss = __is_specialization_v<_Tp, chrono::hh_mm_ss>; + +template +concept __is_time_point = __is_specialization_v<_Tp, chrono::time_point>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_CONCEPTS_H diff --git a/lib/libcxx/include/__chrono/convert_to_timespec.h b/lib/libcxx/include/__chrono/convert_to_timespec.h new file mode 100644 index 0000000..fab07f2 --- /dev/null +++ b/lib/libcxx/include/__chrono/convert_to_timespec.h @@ -0,0 +1,56 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_CONVERT_TO_TIMESPEC_H +#define _LIBCPP___CHRONO_CONVERT_TO_TIMESPEC_H + +#include <__chrono/duration.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Convert a nanoseconds duration to the given TimeSpec type, which must have +// the same properties as std::timespec. +template +_LIBCPP_HIDE_FROM_ABI inline +_TimeSpec __convert_to_timespec(const chrono::nanoseconds& __ns) +{ + using namespace chrono; + seconds __s = duration_cast(__ns); + _TimeSpec __ts; + typedef decltype(__ts.tv_sec) __ts_sec; + const __ts_sec __ts_sec_max = numeric_limits<__ts_sec>::max(); + + if (__s.count() < __ts_sec_max) + { + __ts.tv_sec = static_cast<__ts_sec>(__s.count()); + __ts.tv_nsec = static_cast((__ns - __s).count()); + } + else + { + __ts.tv_sec = __ts_sec_max; + __ts.tv_nsec = 999999999; // (10^9 - 1) + } + + return __ts; +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHRONO_CONVERT_TO_TIMESPEC_H diff --git a/lib/libcxx/include/__chrono/convert_to_tm.h b/lib/libcxx/include/__chrono/convert_to_tm.h new file mode 100644 index 0000000..1301cd6 --- /dev/null +++ b/lib/libcxx/include/__chrono/convert_to_tm.h @@ -0,0 +1,186 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_CONVERT_TO_TM_H +#define _LIBCPP___CHRONO_CONVERT_TO_TM_H + +#include <__chrono/calendar.h> +#include <__chrono/concepts.h> +#include <__chrono/day.h> +#include <__chrono/duration.h> +#include <__chrono/file_clock.h> +#include <__chrono/hh_mm_ss.h> +#include <__chrono/month.h> +#include <__chrono/month_weekday.h> +#include <__chrono/monthday.h> +#include <__chrono/statically_widen.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__chrono/weekday.h> +#include <__chrono/year.h> +#include <__chrono/year_month.h> +#include <__chrono/year_month_day.h> +#include <__chrono/year_month_weekday.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/format_error.h> +#include <__memory/addressof.h> +#include <__type_traits/is_convertible.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// Conerts a chrono date and weekday to a given _Tm type. +// +// This is an implementation detail for the function +// template +// _Tm __convert_to_tm(const _ChronoT& __value) +// +// This manually converts the two values to the proper type. It is possible to +// convert from sys_days to time_t and then to _Tm. But this leads to the Y2K +// bug when time_t is a 32-bit signed integer. Chrono considers years beyond +// the year 2038 valid, so instead do the transformation manually. +template + requires(same_as<_Date, chrono::year_month_day> || same_as<_Date, chrono::year_month_day_last>) +_LIBCPP_HIDE_FROM_ABI _Tm __convert_to_tm(const _Date& __date, chrono::weekday __weekday) { + _Tm __result = {}; +# ifdef __GLIBC__ + __result.tm_zone = "UTC"; +# endif + __result.tm_year = static_cast(__date.year()) - 1900; + __result.tm_mon = static_cast(__date.month()) - 1; + __result.tm_mday = static_cast(__date.day()); + __result.tm_wday = static_cast(__weekday.c_encoding()); + __result.tm_yday = + (static_cast(__date) - + static_cast(chrono::year_month_day{__date.year(), chrono::January, chrono::day{1}})) + .count(); + + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI _Tm __convert_to_tm(const chrono::sys_time<_Duration> __tp) { + chrono::sys_days __days = chrono::floor(__tp); + chrono::year_month_day __ymd{__days}; + + _Tm __result = std::__convert_to_tm<_Tm>(chrono::year_month_day{__ymd}, chrono::weekday{__days}); + + uint64_t __sec = + chrono::duration_cast(__tp - chrono::time_point_cast(__days)).count(); + __sec %= 24 * 3600; + __result.tm_hour = __sec / 3600; + __sec %= 3600; + __result.tm_min = __sec / 60; + __result.tm_sec = __sec % 60; + + return __result; +} + +// Convert a chrono (calendar) time point, or dururation to the given _Tm type, +// which must have the same properties as std::tm. +template +_LIBCPP_HIDE_FROM_ABI _Tm __convert_to_tm(const _ChronoT& __value) { + _Tm __result = {}; +# ifdef __GLIBC__ + __result.tm_zone = "UTC"; +# endif + + if constexpr (__is_time_point<_ChronoT>) { + if constexpr (same_as) + return std::__convert_to_tm<_Tm>(__value); + else if constexpr (same_as) + return std::__convert_to_tm<_Tm>(_ChronoT::clock::to_sys(__value)); + else if constexpr (same_as) + return std::__convert_to_tm<_Tm>(chrono::sys_time{__value.time_since_epoch()}); + else + static_assert(sizeof(_ChronoT) == 0, "TODO: Add the missing clock specialization"); + } else if constexpr (chrono::__is_duration<_ChronoT>::value) { + // [time.format]/6 + // ... However, if a flag refers to a "time of day" (e.g. %H, %I, %p, + // etc.), then a specialization of duration is interpreted as the time of + // day elapsed since midnight. + + // Not all values can be converted to hours, it may run into ratio + // conversion errors. In that case the conversion to seconds works. + if constexpr (is_convertible_v<_ChronoT, chrono::hours>) { + auto __hour = chrono::floor(__value); + auto __sec = chrono::duration_cast(__value - __hour); + __result.tm_hour = __hour.count() % 24; + __result.tm_min = __sec.count() / 60; + __result.tm_sec = __sec.count() % 60; + } else { + uint64_t __sec = chrono::duration_cast(__value).count(); + __sec %= 24 * 3600; + __result.tm_hour = __sec / 3600; + __sec %= 3600; + __result.tm_min = __sec / 60; + __result.tm_sec = __sec % 60; + } + } else if constexpr (same_as<_ChronoT, chrono::day>) + __result.tm_mday = static_cast(__value); + else if constexpr (same_as<_ChronoT, chrono::month>) + __result.tm_mon = static_cast(__value) - 1; + else if constexpr (same_as<_ChronoT, chrono::year>) + __result.tm_year = static_cast(__value) - 1900; + else if constexpr (same_as<_ChronoT, chrono::weekday>) + __result.tm_wday = __value.c_encoding(); + else if constexpr (same_as<_ChronoT, chrono::weekday_indexed> || same_as<_ChronoT, chrono::weekday_last>) + __result.tm_wday = __value.weekday().c_encoding(); + else if constexpr (same_as<_ChronoT, chrono::month_day>) { + __result.tm_mday = static_cast(__value.day()); + __result.tm_mon = static_cast(__value.month()) - 1; + } else if constexpr (same_as<_ChronoT, chrono::month_day_last>) { + __result.tm_mon = static_cast(__value.month()) - 1; + } else if constexpr (same_as<_ChronoT, chrono::month_weekday> || same_as<_ChronoT, chrono::month_weekday_last>) { + __result.tm_wday = __value.weekday_indexed().weekday().c_encoding(); + __result.tm_mon = static_cast(__value.month()) - 1; + } else if constexpr (same_as<_ChronoT, chrono::year_month>) { + __result.tm_year = static_cast(__value.year()) - 1900; + __result.tm_mon = static_cast(__value.month()) - 1; + } else if constexpr (same_as<_ChronoT, chrono::year_month_day> || same_as<_ChronoT, chrono::year_month_day_last>) { + return std::__convert_to_tm<_Tm>( + chrono::year_month_day{__value}, chrono::weekday{static_cast(__value)}); + } else if constexpr (same_as<_ChronoT, chrono::year_month_weekday> || + same_as<_ChronoT, chrono::year_month_weekday_last>) { + return std::__convert_to_tm<_Tm>(chrono::year_month_day{static_cast(__value)}, __value.weekday()); + } else if constexpr (__is_hh_mm_ss<_ChronoT>) { + __result.tm_sec = __value.seconds().count(); + __result.tm_min = __value.minutes().count(); + // In libc++ hours is stored as a long. The type in std::tm is an int. So + // the overflow can only occur when hour uses more bits than an int + // provides. + if constexpr (sizeof(std::chrono::hours::rep) > sizeof(__result.tm_hour)) + if (__value.hours().count() > std::numeric_limits::max()) + std::__throw_format_error("Formatting hh_mm_ss, encountered an hour overflow"); + __result.tm_hour = __value.hours().count(); + } else + static_assert(sizeof(_ChronoT) == 0, "Add the missing type specialization"); + + return __result; +} + +#endif // if _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHRONO_CONVERT_TO_TM_H diff --git a/lib/libcxx/include/__chrono/day.h b/lib/libcxx/include/__chrono/day.h new file mode 100644 index 0000000..c907c03 --- /dev/null +++ b/lib/libcxx/include/__chrono/day.h @@ -0,0 +1,84 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_DAY_H +#define _LIBCPP___CHRONO_DAY_H + +#include <__chrono/duration.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class day { +private: + unsigned char __d_; +public: + day() = default; + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr day(unsigned __val) noexcept : __d_(static_cast(__val)) {} + _LIBCPP_HIDE_FROM_ABI inline constexpr day& operator++() noexcept { ++__d_; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr day operator++(int) noexcept { day __tmp = *this; ++(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI inline constexpr day& operator--() noexcept { --__d_; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr day operator--(int) noexcept { day __tmp = *this; --(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI constexpr day& operator+=(const days& __dd) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr day& operator-=(const days& __dd) noexcept; + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __d_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __d_ >= 1 && __d_ <= 31; } + }; + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const day& __lhs, const day& __rhs) noexcept +{ return static_cast(__lhs) == static_cast(__rhs); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const day& __lhs, const day& __rhs) noexcept { + return static_cast(__lhs) <=> static_cast(__rhs); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +day operator+ (const day& __lhs, const days& __rhs) noexcept +{ return day(static_cast(__lhs) + __rhs.count()); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +day operator+ (const days& __lhs, const day& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +day operator- (const day& __lhs, const days& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +days operator-(const day& __lhs, const day& __rhs) noexcept +{ return days(static_cast(static_cast(__lhs)) - + static_cast(static_cast(__rhs))); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +day& day::operator+=(const days& __dd) noexcept +{ *this = *this + __dd; return *this; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +day& day::operator-=(const days& __dd) noexcept +{ *this = *this - __dd; return *this; } + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_DAY_H diff --git a/lib/libcxx/include/__chrono/duration.h b/lib/libcxx/include/__chrono/duration.h new file mode 100644 index 0000000..96e9671 --- /dev/null +++ b/lib/libcxx/include/__chrono/duration.h @@ -0,0 +1,641 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_DURATION_H +#define _LIBCPP___CHRONO_DURATION_H + +#include <__compare/ordering.h> +#include <__compare/three_way_comparable.h> +#include <__config> +#include <__type_traits/common_type.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_floating_point.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +template > class _LIBCPP_TEMPLATE_VIS duration; + +template +struct __is_duration : false_type {}; + +template +struct __is_duration > : true_type {}; + +template +struct __is_duration > : true_type {}; + +template +struct __is_duration > : true_type {}; + +template +struct __is_duration > : true_type {}; + +} // namespace chrono + +template +struct _LIBCPP_TEMPLATE_VIS common_type, + chrono::duration<_Rep2, _Period2> > +{ + typedef chrono::duration::type, + typename __ratio_gcd<_Period1, _Period2>::type> type; +}; + +namespace chrono { + +// duration_cast + +template ::type, + bool = _Period::num == 1, + bool = _Period::den == 1> +struct __duration_cast; + +template +struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + _ToDuration operator()(const _FromDuration& __fd) const + { + return _ToDuration(static_cast(__fd.count())); + } +}; + +template +struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + _ToDuration operator()(const _FromDuration& __fd) const + { + typedef typename common_type::type _Ct; + return _ToDuration(static_cast( + static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den))); + } +}; + +template +struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + _ToDuration operator()(const _FromDuration& __fd) const + { + typedef typename common_type::type _Ct; + return _ToDuration(static_cast( + static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num))); + } +}; + +template +struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + _ToDuration operator()(const _FromDuration& __fd) const + { + typedef typename common_type::type _Ct; + return _ToDuration(static_cast( + static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) + / static_cast<_Ct>(_Period::den))); + } +}; + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + _ToDuration +>::type +duration_cast(const duration<_Rep, _Period>& __fd) +{ + return __duration_cast, _ToDuration>()(__fd); +} + +template +struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {}; + +#if _LIBCPP_STD_VER >= 17 +template +inline constexpr bool treat_as_floating_point_v = treat_as_floating_point<_Rep>::value; +#endif + +template +struct _LIBCPP_TEMPLATE_VIS duration_values +{ +public: + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT {return _Rep(0);} + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT {return numeric_limits<_Rep>::max();} + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT {return numeric_limits<_Rep>::lowest();} +}; + +#if _LIBCPP_STD_VER >= 17 +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + _ToDuration +>::type +floor(const duration<_Rep, _Period>& __d) +{ + _ToDuration __t = chrono::duration_cast<_ToDuration>(__d); + if (__t > __d) + __t = __t - _ToDuration{1}; + return __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + _ToDuration +>::type +ceil(const duration<_Rep, _Period>& __d) +{ + _ToDuration __t = chrono::duration_cast<_ToDuration>(__d); + if (__t < __d) + __t = __t + _ToDuration{1}; + return __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + _ToDuration +>::type +round(const duration<_Rep, _Period>& __d) +{ + _ToDuration __lower = chrono::floor<_ToDuration>(__d); + _ToDuration __upper = __lower + _ToDuration{1}; + auto __lower_diff = __d - __lower; + auto __upper_diff = __upper - __d; + if (__lower_diff < __upper_diff) + return __lower; + if (__lower_diff > __upper_diff) + return __upper; + return __lower.count() & 1 ? __upper : __lower; +} +#endif + +// duration + +template +class _LIBCPP_TEMPLATE_VIS duration +{ + static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration"); + static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio"); + static_assert(_Period::num > 0, "duration period must be positive"); + + template + struct __no_overflow + { + private: + static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value; + static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value; + static const intmax_t __n1 = _R1::num / __gcd_n1_n2; + static const intmax_t __d1 = _R1::den / __gcd_d1_d2; + static const intmax_t __n2 = _R2::num / __gcd_n1_n2; + static const intmax_t __d2 = _R2::den / __gcd_d1_d2; + static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1); + + template + struct __mul // __overflow == false + { + static const intmax_t value = _Xp * _Yp; + }; + + template + struct __mul<_Xp, _Yp, true> + { + static const intmax_t value = 1; + }; + + public: + static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1); + typedef ratio<__mul<__n1, __d2, !value>::value, + __mul<__n2, __d1, !value>::value> type; + }; + +public: + typedef _Rep rep; + typedef typename _Period::type period; +private: + rep __rep_; +public: + +#ifndef _LIBCPP_CXX03_LANG + constexpr duration() = default; +#else + _LIBCPP_HIDE_FROM_ABI duration() {} +#endif + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + explicit duration(const _Rep2& __r, + typename enable_if + < + is_convertible::value && + (treat_as_floating_point::value || + !treat_as_floating_point<_Rep2>::value) + >::type* = nullptr) + : __rep_(__r) {} + + // conversions + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + duration(const duration<_Rep2, _Period2>& __d, + typename enable_if + < + __no_overflow<_Period2, period>::value && ( + treat_as_floating_point::value || + (__no_overflow<_Period2, period>::type::den == 1 && + !treat_as_floating_point<_Rep2>::value)) + >::type* = nullptr) + : __rep_(chrono::duration_cast(__d).count()) {} + + // observer + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;} + + // arithmetic + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type::type operator+() const {return typename common_type::type(*this);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type::type operator-() const {return typename common_type::type(-__rep_);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator++() {++__rep_; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator++(int) {return duration(__rep_++);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator--() {--__rep_; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator--(int) {return duration(__rep_--);} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator*=(const rep& __rhs) {__rep_ *= __rhs; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator/=(const rep& __rhs) {__rep_ /= __rhs; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const rep& __rhs) {__rep_ %= __rhs; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const duration& __rhs) {__rep_ %= __rhs.count(); return *this;} + + // special values + + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT {return duration(duration_values::zero());} + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT {return duration(duration_values::min());} + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT {return duration(duration_values::max());} +}; + +typedef duration nanoseconds; +typedef duration microseconds; +typedef duration milliseconds; +typedef duration seconds; +typedef duration< long, ratio< 60> > minutes; +typedef duration< long, ratio<3600> > hours; +#if _LIBCPP_STD_VER >= 20 +typedef duration< int, ratio_multiply, hours::period>> days; +typedef duration< int, ratio_multiply, days::period>> weeks; +typedef duration< int, ratio_multiply, days::period>> years; +typedef duration< int, ratio_divide>> months; +#endif +// Duration == + +template +struct __duration_eq +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const + { + typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; + return _Ct(__lhs).count() == _Ct(__rhs).count(); + } +}; + +template +struct __duration_eq<_LhsDuration, _LhsDuration> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const + {return __lhs.count() == __rhs.count();} +}; + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return __duration_eq, duration<_Rep2, _Period2> >()(__lhs, __rhs); +} + +#if _LIBCPP_STD_VER <= 17 + +// Duration != + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return !(__lhs == __rhs); +} + +#endif // _LIBCPP_STD_VER <= 17 + +// Duration < + +template +struct __duration_lt +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const + { + typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; + return _Ct(__lhs).count() < _Ct(__rhs).count(); + } +}; + +template +struct __duration_lt<_LhsDuration, _LhsDuration> +{ + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const + {return __lhs.count() < __rhs.count();} +}; + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return __duration_lt, duration<_Rep2, _Period2> >()(__lhs, __rhs); +} + +// Duration > + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return __rhs < __lhs; +} + +// Duration <= + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return !(__rhs < __lhs); +} + +// Duration >= + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +bool +operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + return !(__lhs < __rhs); +} + +#if _LIBCPP_STD_VER >= 20 + +template + requires three_way_comparable> +_LIBCPP_HIDE_FROM_ABI +constexpr auto operator<=>(const duration<_Rep1, _Period1>& __lhs, + const duration<_Rep2, _Period2>& __rhs) +{ + using _Ct = common_type_t, duration<_Rep2, _Period2>>; + return _Ct(__lhs).count() <=> _Ct(__rhs).count(); +} + +#endif // _LIBCPP_STD_VER >= 20 + +// Duration + + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename common_type, duration<_Rep2, _Period2> >::type +operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef typename common_type, duration<_Rep2, _Period2> >::type _Cd; + return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count()); +} + +// Duration - + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename common_type, duration<_Rep2, _Period2> >::type +operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef typename common_type, duration<_Rep2, _Period2> >::type _Cd; + return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count()); +} + +// Duration * + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename enable_if +< + is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, + duration::type, _Period> +>::type +operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) +{ + typedef typename common_type<_Rep1, _Rep2>::type _Cr; + typedef duration<_Cr, _Period> _Cd; + return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename enable_if +< + is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, + duration::type, _Period> +>::type +operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) +{ + return __d * __s; +} + +// Duration / + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename enable_if +< + !__is_duration<_Rep2>::value && + is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, + duration::type, _Period> +>::type +operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) +{ + typedef typename common_type<_Rep1, _Rep2>::type _Cr; + typedef duration<_Cr, _Period> _Cd; + return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename common_type<_Rep1, _Rep2>::type +operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef typename common_type, duration<_Rep2, _Period2> >::type _Ct; + return _Ct(__lhs).count() / _Ct(__rhs).count(); +} + +// Duration % + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename enable_if +< + !__is_duration<_Rep2>::value && + is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, + duration::type, _Period> +>::type +operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) +{ + typedef typename common_type<_Rep1, _Rep2>::type _Cr; + typedef duration<_Cr, _Period> _Cd; + return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +typename common_type, duration<_Rep2, _Period2> >::type +operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef typename common_type<_Rep1, _Rep2>::type _Cr; + typedef typename common_type, duration<_Rep2, _Period2> >::type _Cd; + return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count())); +} + +} // namespace chrono + +#if _LIBCPP_STD_VER >= 14 +// Suffixes for duration literals [time.duration.literals] +inline namespace literals +{ + inline namespace chrono_literals + { + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::hours operator""h(unsigned long long __h) + { + return chrono::hours(static_cast(__h)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration> operator""h(long double __h) + { + return chrono::duration>(__h); + } + + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes operator""min(unsigned long long __m) + { + return chrono::minutes(static_cast(__m)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration> operator""min(long double __m) + { + return chrono::duration> (__m); + } + + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds operator""s(unsigned long long __s) + { + return chrono::seconds(static_cast(__s)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration operator""s(long double __s) + { + return chrono::duration (__s); + } + + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::milliseconds operator""ms(unsigned long long __ms) + { + return chrono::milliseconds(static_cast(__ms)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration operator""ms(long double __ms) + { + return chrono::duration(__ms); + } + + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::microseconds operator""us(unsigned long long __us) + { + return chrono::microseconds(static_cast(__us)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration operator""us(long double __us) + { + return chrono::duration (__us); + } + + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) + { + return chrono::nanoseconds(static_cast(__ns)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::duration operator""ns(long double __ns) + { + return chrono::duration (__ns); + } + +} // namespace chrono_literals +} // namespace literals + +namespace chrono { // hoist the literals into namespace std::chrono + using namespace literals::chrono_literals; +} // namespace chrono + +#endif // _LIBCPP_STD_VER >= 14 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 +# include +#endif + +#endif // _LIBCPP___CHRONO_DURATION_H diff --git a/lib/libcxx/include/__chrono/file_clock.h b/lib/libcxx/include/__chrono/file_clock.h new file mode 100644 index 0000000..557a880 --- /dev/null +++ b/lib/libcxx/include/__chrono/file_clock.h @@ -0,0 +1,85 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_FILE_CLOCK_H +#define _LIBCPP___CHRONO_FILE_CLOCK_H + +#include <__availability> +#include <__chrono/duration.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM +struct _FilesystemClock; +_LIBCPP_END_NAMESPACE_FILESYSTEM +#endif // !_LIBCPP_CXX03_LANG + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +// [time.clock.file], type file_clock +using file_clock = _VSTD_FS::_FilesystemClock; + +template +using file_time = time_point; + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#ifndef _LIBCPP_CXX03_LANG +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM +struct _FilesystemClock { +#if !defined(_LIBCPP_HAS_NO_INT128) + typedef __int128_t rep; + typedef nano period; +#else + typedef long long rep; + typedef nano period; +#endif + + typedef chrono::duration duration; + typedef chrono::time_point<_FilesystemClock> time_point; + + _LIBCPP_EXPORTED_FROM_ABI + static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = false; + + _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI static time_point now() noexcept; + +#if _LIBCPP_STD_VER >= 20 + template + _LIBCPP_HIDE_FROM_ABI + static chrono::sys_time<_Duration> to_sys(const chrono::file_time<_Duration>& __t) { + return chrono::sys_time<_Duration>(__t.time_since_epoch()); + } + + template + _LIBCPP_HIDE_FROM_ABI + static chrono::file_time<_Duration> from_sys(const chrono::sys_time<_Duration>& __t) { + return chrono::file_time<_Duration>(__t.time_since_epoch()); + } +#endif // _LIBCPP_STD_VER >= 20 +}; +_LIBCPP_END_NAMESPACE_FILESYSTEM +#endif // !_LIBCPP_CXX03_LANG + +#endif // _LIBCPP___CHRONO_FILE_CLOCK_H diff --git a/lib/libcxx/include/__chrono/formatter.h b/lib/libcxx/include/__chrono/formatter.h new file mode 100644 index 0000000..30ed360 --- /dev/null +++ b/lib/libcxx/include/__chrono/formatter.h @@ -0,0 +1,830 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_FORMATTER_H +#define _LIBCPP___CHRONO_FORMATTER_H + +#include <__chrono/calendar.h> +#include <__chrono/concepts.h> +#include <__chrono/convert_to_tm.h> +#include <__chrono/day.h> +#include <__chrono/duration.h> +#include <__chrono/file_clock.h> +#include <__chrono/hh_mm_ss.h> +#include <__chrono/month.h> +#include <__chrono/month_weekday.h> +#include <__chrono/monthday.h> +#include <__chrono/ostream.h> +#include <__chrono/parser_std_format_spec.h> +#include <__chrono/statically_widen.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__chrono/weekday.h> +#include <__chrono/year.h> +#include <__chrono/year_month.h> +#include <__chrono/year_month_day.h> +#include <__chrono/year_month_weekday.h> +#include <__concepts/arithmetic.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_error.h> +#include <__format/format_functions.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/parser_std_format_spec.h> +#include <__format/write_escaped.h> +#include <__memory/addressof.h> +#include +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __formatter { + +/// Formats a time based on a tm struct. +/// +/// This formatter passes the formatting to time_put which uses strftime. When +/// the value is outside the valid range it's unspecified what strftime will +/// output. For example weekday 8 can print 1 when the day is processed modulo +/// 7 since that handles the Sunday for 0-based weekday. It can also print 8 if +/// 7 is handled as a special case. +/// +/// The Standard doesn't specify what to do in this case so the result depends +/// on the result of the underlying code. +/// +/// \pre When the (abbreviated) weekday or month name are used, the caller +/// validates whether the value is valid. So the caller handles that +/// requirement of Table 97: Meaning of conversion specifiers +/// [tab:time.format.spec]. +/// +/// When no chrono-specs are provided it uses the stream formatter. + +// For tiny ratios it's not possible to convert a duration to a hh_mm_ss. This +// fails compile-time due to the limited precision of the ratio (64-bit is too +// small). Therefore a duration uses its own conversion. +template +_LIBCPP_HIDE_FROM_ABI void +__format_sub_seconds(const chrono::duration<_Rep, _Period>& __value, basic_stringstream<_CharT>& __sstr) { + __sstr << std::use_facet>(__sstr.getloc()).decimal_point(); + + using __duration = chrono::duration<_Rep, _Period>; + + auto __fraction = __value - chrono::duration_cast(__value); + if constexpr (chrono::treat_as_floating_point_v<_Rep>) + // When the floating-point value has digits itself they are ignored based + // on the wording in [tab:time.format.spec] + // If the precision of the input cannot be exactly represented with + // seconds, then the format is a decimal floating-point number with a + // fixed format and a precision matching that of the precision of the + // input (or to a microseconds precision if the conversion to + // floating-point decimal seconds cannot be made within 18 fractional + // digits). + // + // This matches the behaviour of MSVC STL, fmtlib interprets this + // differently and uses 3 decimals. + // https://godbolt.org/z/6dsbnW8ba + std::format_to(std::ostreambuf_iterator<_CharT>{__sstr}, + _LIBCPP_STATICALLY_WIDEN(_CharT, "{:0{}.0f}"), + chrono::duration_cast::precision>(__fraction).count(), + chrono::hh_mm_ss<__duration>::fractional_width); + else + std::format_to(std::ostreambuf_iterator<_CharT>{__sstr}, + _LIBCPP_STATICALLY_WIDEN(_CharT, "{:0{}}"), + chrono::duration_cast::precision>(__fraction).count(), + chrono::hh_mm_ss<__duration>::fractional_width); +} + +template +_LIBCPP_HIDE_FROM_ABI void __format_sub_seconds(const _Tp& __value, basic_stringstream<_CharT>& __sstr) { + __formatter::__format_sub_seconds(__value.time_since_epoch(), __sstr); +} + +template +_LIBCPP_HIDE_FROM_ABI void +__format_sub_seconds(const chrono::hh_mm_ss<_Duration>& __value, basic_stringstream<_CharT>& __sstr) { + __sstr << std::use_facet>(__sstr.getloc()).decimal_point(); + if constexpr (chrono::treat_as_floating_point_v) + std::format_to(std::ostreambuf_iterator<_CharT>{__sstr}, + _LIBCPP_STATICALLY_WIDEN(_CharT, "{:0{}.0f}"), + __value.subseconds().count(), + __value.fractional_width); + else + std::format_to(std::ostreambuf_iterator<_CharT>{__sstr}, + _LIBCPP_STATICALLY_WIDEN(_CharT, "{:0{}}"), + __value.subseconds().count(), + __value.fractional_width); +} + +template +consteval bool __use_fraction() { + if constexpr (__is_time_point<_Tp>) + return chrono::hh_mm_ss::fractional_width; + else if constexpr (chrono::__is_duration<_Tp>::value) + return chrono::hh_mm_ss<_Tp>::fractional_width; + else if constexpr (__is_hh_mm_ss<_Tp>) + return _Tp::fractional_width; + else + return false; +} + +template +_LIBCPP_HIDE_FROM_ABI void __format_year(int __year, basic_stringstream<_CharT>& __sstr) { + if (__year < 0) { + __sstr << _CharT('-'); + __year = -__year; + } + + // TODO FMT Write an issue + // If the result has less than four digits it is zero-padded with 0 to two digits. + // is less -> has less + // left-padded -> zero-padded, otherwise the proper value would be 000-0. + + // Note according to the wording it should be left padded, which is odd. + __sstr << std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:04}"), __year); +} + +template +_LIBCPP_HIDE_FROM_ABI void __format_century(int __year, basic_stringstream<_CharT>& __sstr) { + // TODO FMT Write an issue + // [tab:time.format.spec] + // %C The year divided by 100 using floored division. If the result is a + // single decimal digit, it is prefixed with 0. + + bool __negative = __year < 0; + int __century = (__year - (99 * __negative)) / 100; // floored division + __sstr << std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:02}"), __century); +} + +template +_LIBCPP_HIDE_FROM_ABI void __format_chrono_using_chrono_specs( + const _Tp& __value, basic_stringstream<_CharT>& __sstr, basic_string_view<_CharT> __chrono_specs) { + tm __t = std::__convert_to_tm(__value); + const auto& __facet = std::use_facet>(__sstr.getloc()); + for (auto __it = __chrono_specs.begin(); __it != __chrono_specs.end(); ++__it) { + if (*__it == _CharT('%')) { + auto __s = __it; + ++__it; + // We only handle the types that can't be directly handled by time_put. + // (as an optimization n, t, and % are also handled directly.) + switch (*__it) { + case _CharT('n'): + __sstr << _CharT('\n'); + break; + case _CharT('t'): + __sstr << _CharT('\t'); + break; + case _CharT('%'): + __sstr << *__it; + break; + + case _CharT('C'): { + // strftime's output is only defined in the range [00, 99]. + int __year = __t.tm_year + 1900; + if (__year < 1000 || __year > 9999) + __formatter::__format_century(__year, __sstr); + else + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + } break; + + case _CharT('j'): + if constexpr (chrono::__is_duration<_Tp>::value) + // Converting a duration where the period has a small ratio to days + // may fail to compile. This due to loss of precision in the + // conversion. In order to avoid that issue convert to seconds as + // an intemediate step. + __sstr << chrono::duration_cast(chrono::duration_cast(__value)).count(); + else + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + break; + + case _CharT('q'): + if constexpr (chrono::__is_duration<_Tp>::value) { + __sstr << chrono::__units_suffix<_CharT, typename _Tp::period>(); + break; + } + __builtin_unreachable(); + + case _CharT('Q'): + // TODO FMT Determine the proper ideas + // - Should it honour the precision? + // - Shoult it honour the locale setting for the separators? + // The wording for Q doesn't use the word locale and the effect of + // precision is unspecified. + // + // MSVC STL ignores precision but uses separator + // FMT honours precision and has a bug for separator + // https://godbolt.org/z/78b7sMxns + if constexpr (chrono::__is_duration<_Tp>::value) { + __sstr << std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{}"), __value.count()); + break; + } + __builtin_unreachable(); + + case _CharT('S'): + case _CharT('T'): + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + if constexpr (__use_fraction<_Tp>()) + __formatter::__format_sub_seconds(__value, __sstr); + break; + + // Unlike time_put and strftime the formatting library requires %Y + // + // [tab:time.format.spec] + // The year as a decimal number. If the result is less than four digits + // it is left-padded with 0 to four digits. + // + // This means years in the range (-1000, 1000) need manual formatting. + // It's unclear whether %EY needs the same treatment. For example the + // Japanese EY contains the era name and year. This is zero-padded to 2 + // digits in time_put (note that older glibc versions didn't do + // padding.) However most eras won't reach 100 years, let alone 1000. + // So padding to 4 digits seems unwanted for Japanese. + // + // The same applies to %Ex since that too depends on the era. + // + // %x the locale's date representation is currently doesn't handle the + // zero-padding too. + // + // The 4 digits can be implemented better at a later time. On POSIX + // systems the required information can be extracted by nl_langinfo + // https://man7.org/linux/man-pages/man3/nl_langinfo.3.html + // + // Note since year < -1000 is expected to be rare it uses the more + // expensive year routine. + // + // TODO FMT evaluate the comment above. + +# if defined(__GLIBC__) || defined(_AIX) || defined(_WIN32) + case _CharT('y'): + // Glibc fails for negative values, AIX for positive values too. + __sstr << std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:02}"), (std::abs(__t.tm_year + 1900)) % 100); + break; +# endif // defined(__GLIBC__) || defined(_AIX) || defined(_WIN32) + + case _CharT('Y'): + // Depending on the platform's libc the range of supported years is + // limited. Intead of of testing all conditions use the internal + // implementation unconditionally. + __formatter::__format_year(__t.tm_year + 1900, __sstr); + break; + + case _CharT('F'): { + int __year = __t.tm_year + 1900; + if (__year < 1000) { + __formatter::__format_year(__year, __sstr); + __sstr << std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "-{:02}-{:02}"), __t.tm_mon + 1, __t.tm_mday); + } else + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + } break; + + case _CharT('Z'): + // TODO FMT Add proper timezone support. + __sstr << _LIBCPP_STATICALLY_WIDEN(_CharT, "UTC"); + break; + + case _CharT('O'): + if constexpr (__use_fraction<_Tp>()) { + // Handle OS using the normal representation for the non-fractional + // part. There seems to be no locale information regarding how the + // fractional part should be formatted. + if (*(__it + 1) == 'S') { + ++__it; + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + __formatter::__format_sub_seconds(__value, __sstr); + break; + } + } + [[fallthrough]]; + case _CharT('E'): + ++__it; + [[fallthrough]]; + default: + __facet.put({__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1)); + break; + } + } else { + __sstr << *__it; + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr bool __weekday_ok(const _Tp& __value) { + if constexpr (__is_time_point<_Tp>) + return true; + else if constexpr (same_as<_Tp, chrono::day>) + return true; + else if constexpr (same_as<_Tp, chrono::month>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_indexed>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_weekday>) + return true; + else if constexpr (same_as<_Tp, chrono::month_weekday_last>) + return true; + else if constexpr (same_as<_Tp, chrono::year_month>) + return true; + else if constexpr (same_as<_Tp, chrono::year_month_day>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_day_last>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday>) + return __value.weekday().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday_last>) + return __value.weekday().ok(); + else if constexpr (__is_hh_mm_ss<_Tp>) + return true; + else + static_assert(sizeof(_Tp) == 0, "Add the missing type specialization"); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr bool __weekday_name_ok(const _Tp& __value) { + if constexpr (__is_time_point<_Tp>) + return true; + else if constexpr (same_as<_Tp, chrono::day>) + return true; + else if constexpr (same_as<_Tp, chrono::month>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::weekday_indexed>) + return __value.weekday().ok(); + else if constexpr (same_as<_Tp, chrono::weekday_last>) + return __value.weekday().ok(); + else if constexpr (same_as<_Tp, chrono::month_day>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_weekday>) + return __value.weekday_indexed().ok(); + else if constexpr (same_as<_Tp, chrono::month_weekday_last>) + return __value.weekday_indexed().ok(); + else if constexpr (same_as<_Tp, chrono::year_month>) + return true; + else if constexpr (same_as<_Tp, chrono::year_month_day>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_day_last>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday>) + return __value.weekday().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday_last>) + return __value.weekday().ok(); + else if constexpr (__is_hh_mm_ss<_Tp>) + return true; + else + static_assert(sizeof(_Tp) == 0, "Add the missing type specialization"); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr bool __date_ok(const _Tp& __value) { + if constexpr (__is_time_point<_Tp>) + return true; + else if constexpr (same_as<_Tp, chrono::day>) + return true; + else if constexpr (same_as<_Tp, chrono::month>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_indexed>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_weekday>) + return true; + else if constexpr (same_as<_Tp, chrono::month_weekday_last>) + return true; + else if constexpr (same_as<_Tp, chrono::year_month>) + return true; + else if constexpr (same_as<_Tp, chrono::year_month_day>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_day_last>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday_last>) + return __value.ok(); + else if constexpr (__is_hh_mm_ss<_Tp>) + return true; + else + static_assert(sizeof(_Tp) == 0, "Add the missing type specialization"); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr bool __month_name_ok(const _Tp& __value) { + if constexpr (__is_time_point<_Tp>) + return true; + else if constexpr (same_as<_Tp, chrono::day>) + return true; + else if constexpr (same_as<_Tp, chrono::month>) + return __value.ok(); + else if constexpr (same_as<_Tp, chrono::year>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_indexed>) + return true; + else if constexpr (same_as<_Tp, chrono::weekday_last>) + return true; + else if constexpr (same_as<_Tp, chrono::month_day>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::month_day_last>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::month_weekday>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::month_weekday_last>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::year_month>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_day>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_day_last>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday>) + return __value.month().ok(); + else if constexpr (same_as<_Tp, chrono::year_month_weekday_last>) + return __value.month().ok(); + else if constexpr (__is_hh_mm_ss<_Tp>) + return true; + else + static_assert(sizeof(_Tp) == 0, "Add the missing type specialization"); +} + +template +_LIBCPP_HIDE_FROM_ABI auto +__format_chrono(const _Tp& __value, + _FormatContext& __ctx, + __format_spec::__parsed_specifications<_CharT> __specs, + basic_string_view<_CharT> __chrono_specs) { + basic_stringstream<_CharT> __sstr; + // [time.format]/2 + // 2.1 - the "C" locale if the L option is not present in chrono-format-spec, otherwise + // 2.2 - the locale passed to the formatting function if any, otherwise + // 2.3 - the global locale. + // Note that the __ctx's locale() call does 2.2 and 2.3. + if (__specs.__chrono_.__locale_specific_form_) + __sstr.imbue(__ctx.locale()); + else + __sstr.imbue(locale::classic()); + + if (__chrono_specs.empty()) + __sstr << __value; + else { + if constexpr (chrono::__is_duration<_Tp>::value) { + if (__value < __value.zero()) + __sstr << _CharT('-'); + __formatter::__format_chrono_using_chrono_specs(chrono::abs(__value), __sstr, __chrono_specs); + // TODO FMT When keeping the precision it will truncate the string. + // Note that the behaviour what the precision does isn't specified. + __specs.__precision_ = -1; + } else { + // Test __weekday_name_ before __weekday_ to give a better error. + if (__specs.__chrono_.__weekday_name_ && !__formatter::__weekday_name_ok(__value)) + std::__throw_format_error("Formatting a weekday name needs a valid weekday"); + + if (__specs.__chrono_.__weekday_ && !__formatter::__weekday_ok(__value)) + std::__throw_format_error("Formatting a weekday needs a valid weekday"); + + if (__specs.__chrono_.__day_of_year_ && !__formatter::__date_ok(__value)) + std::__throw_format_error("Formatting a day of year needs a valid date"); + + if (__specs.__chrono_.__week_of_year_ && !__formatter::__date_ok(__value)) + std::__throw_format_error("Formatting a week of year needs a valid date"); + + if (__specs.__chrono_.__month_name_ && !__formatter::__month_name_ok(__value)) + std::__throw_format_error("Formatting a month name from an invalid month number"); + + if constexpr (__is_hh_mm_ss<_Tp>) { + // Note this is a pedantic intepretation of the Standard. A hh_mm_ss + // is no longer a time_of_day and can store an arbitrary number of + // hours. A number of hours in a 12 or 24 hour clock can't represent + // 24 hours or more. The functions std::chrono::make12 and + // std::chrono::make24 reaffirm this view point. + // + // Interestingly this will be the only output stream function that + // throws. + // + // TODO FMT The wording probably needs to be adapted to + // - The displayed hours is hh_mm_ss.hours() % 24 + // - It should probably allow %j in the same fashion as duration. + // - The stream formatter should change its output when hours >= 24 + // - Write it as not valid, + // - or write the number of days. + if (__specs.__chrono_.__hour_ && __value.hours().count() > 23) + std::__throw_format_error("Formatting a hour needs a valid value"); + + if (__value.is_negative()) + __sstr << _CharT('-'); + } + + __formatter::__format_chrono_using_chrono_specs(__value, __sstr, __chrono_specs); + } + } + + return __formatter::__write_string(__sstr.view(), __ctx.out(), __specs); +} + +} // namespace __formatter + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS __formatter_chrono { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator + __parse(_ParseContext& __ctx, __format_spec::__fields __fields, __format_spec::__flags __flags) { + return __parser_.__parse(__ctx, __fields, __flags); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const _Tp& __value, _FormatContext& __ctx) const { + return __formatter::__format_chrono( + __value, __ctx, __parser_.__parser_.__get_parsed_chrono_specifications(__ctx), __parser_.__chrono_specs_); + } + + __format_spec::__parser_chrono<_CharT> __parser_; +}; + +template +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__clock); + } +}; + +template +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__clock); + } +}; + +template +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + // The flags are not __clock since there is no associated time-zone. + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__date_time); + } +}; + +template +struct formatter, _CharT> : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + // [time.format]/1 + // Giving a precision specification in the chrono-format-spec is valid only + // for std::chrono::duration types where the representation type Rep is a + // floating-point type. For all other Rep types, an exception of type + // format_error is thrown if the chrono-format-spec contains a precision + // specification. + // + // Note this doesn't refer to chrono::treat_as_floating_point_v<_Rep>. + if constexpr (std::floating_point<_Rep>) + return _Base::__parse(__ctx, __format_spec::__fields_chrono_fractional, __format_spec::__flags::__duration); + else + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__duration); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__day); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__month); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__year); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__weekday); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__weekday); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__weekday); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__month_day); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__month); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__month_weekday); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__month_weekday); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__year_month); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__date); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__date); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__date); + } +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__date); + } +}; + +template +struct formatter, _CharT> : public __formatter_chrono<_CharT> { +public: + using _Base = __formatter_chrono<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return _Base::__parse(__ctx, __format_spec::__fields_chrono, __format_spec::__flags::__time); + } +}; +#endif // if _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_FORMATTER_H diff --git a/lib/libcxx/include/__chrono/hh_mm_ss.h b/lib/libcxx/include/__chrono/hh_mm_ss.h new file mode 100644 index 0000000..5bd452e --- /dev/null +++ b/lib/libcxx/include/__chrono/hh_mm_ss.h @@ -0,0 +1,113 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_HH_MM_SS_H +#define _LIBCPP___CHRONO_HH_MM_SS_H + +#include <__chrono/duration.h> +#include <__chrono/time_point.h> +#include <__config> +#include <__type_traits/common_type.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +template +class hh_mm_ss +{ +private: + static_assert(__is_duration<_Duration>::value, "template parameter of hh_mm_ss must be a std::chrono::duration"); + using __CommonType = common_type_t<_Duration, chrono::seconds>; + + _LIBCPP_HIDE_FROM_ABI static constexpr uint64_t __pow10(unsigned __exp) + { + uint64_t __ret = 1; + for (unsigned __i = 0; __i < __exp; ++__i) + __ret *= 10U; + return __ret; + } + + _LIBCPP_HIDE_FROM_ABI static constexpr unsigned __width(uint64_t __n, uint64_t __d = 10, unsigned __w = 0) + { + if (__n >= 2 && __d != 0 && __w < 19) + return 1 + __width(__n, __d % __n * 10, __w+1); + return 0; + } + +public: + _LIBCPP_HIDE_FROM_ABI static unsigned constexpr fractional_width = __width(__CommonType::period::den) < 19 ? + __width(__CommonType::period::den) : 6u; + using precision = duration>; + + _LIBCPP_HIDE_FROM_ABI constexpr hh_mm_ss() noexcept : hh_mm_ss{_Duration::zero()} {} + + _LIBCPP_HIDE_FROM_ABI constexpr explicit hh_mm_ss(_Duration __d) noexcept : + __is_neg_(__d < _Duration(0)), + __h_(chrono::duration_cast (chrono::abs(__d))), + __m_(chrono::duration_cast(chrono::abs(__d) - hours())), + __s_(chrono::duration_cast(chrono::abs(__d) - hours() - minutes())), + __f_(chrono::duration_cast (chrono::abs(__d) - hours() - minutes() - seconds())) + {} + + _LIBCPP_HIDE_FROM_ABI constexpr bool is_negative() const noexcept { return __is_neg_; } + _LIBCPP_HIDE_FROM_ABI constexpr chrono::hours hours() const noexcept { return __h_; } + _LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes minutes() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds seconds() const noexcept { return __s_; } + _LIBCPP_HIDE_FROM_ABI constexpr precision subseconds() const noexcept { return __f_; } + + _LIBCPP_HIDE_FROM_ABI constexpr precision to_duration() const noexcept + { + auto __dur = __h_ + __m_ + __s_ + __f_; + return __is_neg_ ? -__dur : __dur; + } + + _LIBCPP_HIDE_FROM_ABI constexpr explicit operator precision() const noexcept { return to_duration(); } + +private: + bool __is_neg_; + chrono::hours __h_; + chrono::minutes __m_; + chrono::seconds __s_; + precision __f_; +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(hh_mm_ss); + +_LIBCPP_HIDE_FROM_ABI constexpr bool is_am(const hours& __h) noexcept { return __h >= hours( 0) && __h < hours(12); } +_LIBCPP_HIDE_FROM_ABI constexpr bool is_pm(const hours& __h) noexcept { return __h >= hours(12) && __h < hours(24); } + +_LIBCPP_HIDE_FROM_ABI constexpr hours make12(const hours& __h) noexcept +{ + if (__h == hours( 0)) return hours(12); + else if (__h <= hours(12)) return __h; + else return __h - hours(12); +} + +_LIBCPP_HIDE_FROM_ABI constexpr hours make24(const hours& __h, bool __is_pm) noexcept +{ + if (__is_pm) + return __h == hours(12) ? __h : __h + hours(12); + else + return __h == hours(12) ? hours(0) : __h; +} +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_HH_MM_SS_H diff --git a/lib/libcxx/include/__chrono/high_resolution_clock.h b/lib/libcxx/include/__chrono/high_resolution_clock.h new file mode 100644 index 0000000..778ff44 --- /dev/null +++ b/lib/libcxx/include/__chrono/high_resolution_clock.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_HIGH_RESOLUTION_CLOCK_H +#define _LIBCPP___CHRONO_HIGH_RESOLUTION_CLOCK_H + +#include <__chrono/steady_clock.h> +#include <__chrono/system_clock.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK +typedef steady_clock high_resolution_clock; +#else +typedef system_clock high_resolution_clock; +#endif + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_HIGH_RESOLUTION_CLOCK_H diff --git a/lib/libcxx/include/__chrono/literals.h b/lib/libcxx/include/__chrono/literals.h new file mode 100644 index 0000000..28ddc43 --- /dev/null +++ b/lib/libcxx/include/__chrono/literals.h @@ -0,0 +1,49 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_LITERALS_H +#define _LIBCPP___CHRONO_LITERALS_H + +#include <__chrono/day.h> +#include <__chrono/year.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +inline namespace literals +{ + inline namespace chrono_literals + { + _LIBCPP_HIDE_FROM_ABI constexpr chrono::day operator ""d(unsigned long long __d) noexcept + { + return chrono::day(static_cast(__d)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr chrono::year operator ""y(unsigned long long __y) noexcept + { + return chrono::year(static_cast(__y)); + } +} // namespace chrono_literals +} // namespace literals + +namespace chrono { // hoist the literals into namespace std::chrono + using namespace literals::chrono_literals; +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_LITERALS_H diff --git a/lib/libcxx/include/__chrono/month.h b/lib/libcxx/include/__chrono/month.h new file mode 100644 index 0000000..7566e4e --- /dev/null +++ b/lib/libcxx/include/__chrono/month.h @@ -0,0 +1,103 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_MONTH_H +#define _LIBCPP___CHRONO_MONTH_H + +#include <__chrono/duration.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class month { +private: + unsigned char __m_; +public: + month() = default; + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr month(unsigned __val) noexcept : __m_(static_cast(__val)) {} + _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator++() noexcept { *this += months{1}; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator--() noexcept { *this -= months{1}; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI constexpr month& operator+=(const months& __m1) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr month& operator-=(const months& __m1) noexcept; + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_ >= 1 && __m_ <= 12; } +}; + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const month& __lhs, const month& __rhs) noexcept +{ return static_cast(__lhs) == static_cast(__rhs); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const month& __lhs, const month& __rhs) noexcept { + return static_cast(__lhs) <=> static_cast(__rhs); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month operator+ (const month& __lhs, const months& __rhs) noexcept +{ + auto const __mu = static_cast(static_cast(__lhs)) + (__rhs.count() - 1); + auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12; + return month{static_cast(__mu - __yr * 12 + 1)}; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month operator+ (const months& __lhs, const month& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month operator- (const month& __lhs, const months& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +months operator-(const month& __lhs, const month& __rhs) noexcept +{ + auto const __dm = static_cast(__lhs) - static_cast(__rhs); + return months(__dm <= 11 ? __dm : __dm + 12); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month& month::operator+=(const months& __dm) noexcept +{ *this = *this + __dm; return *this; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month& month::operator-=(const months& __dm) noexcept +{ *this = *this - __dm; return *this; } + +inline constexpr month January{1}; +inline constexpr month February{2}; +inline constexpr month March{3}; +inline constexpr month April{4}; +inline constexpr month May{5}; +inline constexpr month June{6}; +inline constexpr month July{7}; +inline constexpr month August{8}; +inline constexpr month September{9}; +inline constexpr month October{10}; +inline constexpr month November{11}; +inline constexpr month December{12}; + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_MONTH_H diff --git a/lib/libcxx/include/__chrono/month_weekday.h b/lib/libcxx/include/__chrono/month_weekday.h new file mode 100644 index 0000000..eb9e42d --- /dev/null +++ b/lib/libcxx/include/__chrono/month_weekday.h @@ -0,0 +1,97 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_MONTH_WEEKDAY_H +#define _LIBCPP___CHRONO_MONTH_WEEKDAY_H + +#include <__chrono/month.h> +#include <__chrono/weekday.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class month_weekday { +private: + chrono::month __m_; + chrono::weekday_indexed __wdi_; +public: + _LIBCPP_HIDE_FROM_ABI constexpr month_weekday(const chrono::month& __mval, const chrono::weekday_indexed& __wdival) noexcept + : __m_{__mval}, __wdi_{__wdival} {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_.ok() && __wdi_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const month_weekday& __lhs, const month_weekday& __rhs) noexcept +{ return __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday operator/(const month& __lhs, const weekday_indexed& __rhs) noexcept +{ return month_weekday{__lhs, __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday operator/(int __lhs, const weekday_indexed& __rhs) noexcept +{ return month_weekday{month(__lhs), __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday operator/(const weekday_indexed& __lhs, const month& __rhs) noexcept +{ return month_weekday{__rhs, __lhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday operator/(const weekday_indexed& __lhs, int __rhs) noexcept +{ return month_weekday{month(__rhs), __lhs}; } + + +class month_weekday_last { + chrono::month __m_; + chrono::weekday_last __wdl_; + public: + _LIBCPP_HIDE_FROM_ABI constexpr month_weekday_last(const chrono::month& __mval, const chrono::weekday_last& __wdlval) noexcept + : __m_{__mval}, __wdl_{__wdlval} {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_.ok() && __wdl_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept +{ return __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday_last operator/(const month& __lhs, const weekday_last& __rhs) noexcept +{ return month_weekday_last{__lhs, __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday_last operator/(int __lhs, const weekday_last& __rhs) noexcept +{ return month_weekday_last{month(__lhs), __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday_last operator/(const weekday_last& __lhs, const month& __rhs) noexcept +{ return month_weekday_last{__rhs, __lhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_weekday_last operator/(const weekday_last& __lhs, int __rhs) noexcept +{ return month_weekday_last{month(__rhs), __lhs}; } +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_MONTH_WEEKDAY_H diff --git a/lib/libcxx/include/__chrono/monthday.h b/lib/libcxx/include/__chrono/monthday.h new file mode 100644 index 0000000..03fd750 --- /dev/null +++ b/lib/libcxx/include/__chrono/monthday.h @@ -0,0 +1,129 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_MONTHDAY_H +#define _LIBCPP___CHRONO_MONTHDAY_H + +#include <__chrono/calendar.h> +#include <__chrono/day.h> +#include <__chrono/month.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class month_day { +private: + chrono::month __m_; + chrono::day __d_; +public: + month_day() = default; + _LIBCPP_HIDE_FROM_ABI constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept + : __m_{__mval}, __d_{__dval} {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::day day() const noexcept { return __d_; } + _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept; +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool month_day::ok() const noexcept +{ + if (!__m_.ok()) return false; + const unsigned __dval = static_cast(__d_); + if (__dval < 1 || __dval > 31) return false; + if (__dval <= 29) return true; +// Now we've got either 30 or 31 + const unsigned __mval = static_cast(__m_); + if (__mval == 2) return false; + if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11) + return __dval == 30; + return true; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept +{ return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const month_day& __lhs, const month_day& __rhs) noexcept { + if (auto __c = __lhs.month() <=> __rhs.month(); __c != 0) + return __c; + return __lhs.day() <=> __rhs.day(); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day operator/(const month& __lhs, const day& __rhs) noexcept +{ return month_day{__lhs, __rhs}; } + +_LIBCPP_HIDE_FROM_ABI constexpr +month_day operator/(const day& __lhs, const month& __rhs) noexcept +{ return __rhs / __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day operator/(const month& __lhs, int __rhs) noexcept +{ return __lhs / day(__rhs); } + +_LIBCPP_HIDE_FROM_ABI constexpr +month_day operator/(int __lhs, const day& __rhs) noexcept +{ return month(__lhs) / __rhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +month_day operator/(const day& __lhs, int __rhs) noexcept +{ return month(__rhs) / __lhs; } + +class month_day_last { +private: + chrono::month __m_; +public: + _LIBCPP_HIDE_FROM_ABI explicit constexpr month_day_last(const chrono::month& __val) noexcept + : __m_{__val} {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept +{ return __lhs.month() == __rhs.month(); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering +operator<=>(const month_day_last& __lhs, const month_day_last& __rhs) noexcept { + return __lhs.month() <=> __rhs.month(); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day_last operator/(const month& __lhs, last_spec) noexcept +{ return month_day_last{__lhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day_last operator/(last_spec, const month& __rhs) noexcept +{ return month_day_last{__rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day_last operator/(int __lhs, last_spec) noexcept +{ return month_day_last{month(__lhs)}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +month_day_last operator/(last_spec, int __rhs) noexcept +{ return month_day_last{month(__rhs)}; } + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_MONTHDAY_H diff --git a/lib/libcxx/include/__chrono/ostream.h b/lib/libcxx/include/__chrono/ostream.h new file mode 100644 index 0000000..f171944 --- /dev/null +++ b/lib/libcxx/include/__chrono/ostream.h @@ -0,0 +1,264 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_OSTREAM_H +#define _LIBCPP___CHRONO_OSTREAM_H + +#include <__chrono/calendar.h> +#include <__chrono/day.h> +#include <__chrono/duration.h> +#include <__chrono/file_clock.h> +#include <__chrono/hh_mm_ss.h> +#include <__chrono/month.h> +#include <__chrono/month_weekday.h> +#include <__chrono/monthday.h> +#include <__chrono/statically_widen.h> +#include <__chrono/system_clock.h> +#include <__chrono/weekday.h> +#include <__chrono/year.h> +#include <__chrono/year_month.h> +#include <__chrono/year_month_day.h> +#include <__chrono/year_month_weekday.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/format_functions.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace chrono { + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const sys_time<_Duration> __tp) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L%F %T}"), __tp); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const file_time<_Duration> __tp) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L%F %T}"), __tp); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const local_time<_Duration> __tp) { + return __os << sys_time<_Duration>{__tp.time_since_epoch()}; +} + +// Depending on the type the return is a const _CharT* or a basic_string<_CharT> +template +_LIBCPP_HIDE_FROM_ABI auto __units_suffix() { + // TODO FMT LWG issue the suffixes are always char and not STATICALLY-WIDEN'ed. + if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "as"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "fs"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "ps"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "ns"); + else if constexpr (same_as) +# ifndef _LIBCPP_HAS_NO_UNICODE + return _LIBCPP_STATICALLY_WIDEN(_CharT, "\u00b5s"); +# else + return _LIBCPP_STATICALLY_WIDEN(_CharT, "us"); +# endif + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "ms"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "cs"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "ds"); + else if constexpr (same_as>) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "s"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "das"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "hs"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "ks"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "Ms"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "Gs"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "Ts"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "Ps"); + else if constexpr (same_as) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "Es"); + else if constexpr (same_as>) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "min"); + else if constexpr (same_as>) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "h"); + else if constexpr (same_as>) + return _LIBCPP_STATICALLY_WIDEN(_CharT, "d"); + else if constexpr (_Period::den == 1) + return std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "[{}]s"), _Period::num); + else + return std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "[{}/{}]s"), _Period::num, _Period::den); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const duration<_Rep, _Period>& __d) { + basic_ostringstream<_CharT, _Traits> __s; + __s.flags(__os.flags()); + __s.imbue(__os.getloc()); + __s.precision(__os.precision()); + __s << __d.count() << chrono::__units_suffix<_CharT, _Period>(); + return __os << __s.str(); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& operator<<(basic_ostream<_CharT, _Traits>& __os, const day& __d) { + return __os << (__d.ok() ? std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%d}"), __d) + // Note this error differs from the wording of the Standard. The + // Standard wording doesn't work well on AIX or Windows. There + // the formatted day seems to be either modulo 100 or completely + // omitted. Judging by the wording this is valid. + // TODO FMT Write a paper of file an LWG issue. + : std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:02} is not a valid day"), + static_cast(__d))); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const month& __m) { + return __os << (__m.ok() ? std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L%b}"), __m) + : std::format(__os.getloc(), + _LIBCPP_STATICALLY_WIDEN(_CharT, "{} is not a valid month"), + static_cast(__m))); // TODO FMT Standard mandated locale isn't used. +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year& __y) { + return __os << (__y.ok() ? std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%Y}"), __y) + : std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%Y} is not a valid year"), __y)); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const weekday& __wd) { + return __os << (__wd.ok() ? std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L%a}"), __wd) + : std::format(__os.getloc(), // TODO FMT Standard mandated locale isn't used. + _LIBCPP_STATICALLY_WIDEN(_CharT, "{} is not a valid weekday"), + static_cast(__wd.c_encoding()))); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const weekday_indexed& __wdi) { + auto __i = __wdi.index(); + return __os << (__i >= 1 && __i <= 5 + ? std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}[{}]"), __wdi.weekday(), __i) + : std::format(__os.getloc(), + _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}[{} is not a valid index]"), + __wdi.weekday(), + __i)); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const weekday_last& __wdl) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}[last]"), __wdl.weekday()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const month_day& __md) { + // TODO FMT The Standard allows 30th of February to be printed. + // It would be nice to show an error message instead. + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}/{}"), __md.month(), __md.day()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const month_day_last& __mdl) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}/last"), __mdl.month()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const month_weekday& __mwd) { + return __os << std::format( + __os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}/{:L}"), __mwd.month(), __mwd.weekday_indexed()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const month_weekday_last& __mwdl) { + return __os << std::format( + __os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L}/{:L}"), __mwdl.month(), __mwdl.weekday_last()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month& __ym) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{}/{:L}"), __ym.year(), __ym.month()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month_day& __ymd) { + return __os << (__ymd.ok() ? std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%F}"), __ymd) + : std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%F} is not a valid date"), __ymd)); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month_day_last& __ymdl) { + return __os << std::format( + __os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{}/{:L}"), __ymdl.year(), __ymdl.month_day_last()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month_weekday& __ymwd) { + return __os << std::format( + __os.getloc(), + _LIBCPP_STATICALLY_WIDEN(_CharT, "{}/{:L}/{:L}"), + __ymwd.year(), + __ymwd.month(), + __ymwd.weekday_indexed()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month_weekday_last& __ymwdl) { + return __os << std::format( + __os.getloc(), + _LIBCPP_STATICALLY_WIDEN(_CharT, "{}/{:L}/{:L}"), + __ymwdl.year(), + __ymwdl.month(), + __ymwdl.weekday_last()); +} + +template +_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, const hh_mm_ss<_Duration> __hms) { + return __os << std::format(__os.getloc(), _LIBCPP_STATICALLY_WIDEN(_CharT, "{:L%T}"), __hms); +} + +} // namespace chrono + +#endif // if _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_OSTREAM_H diff --git a/lib/libcxx/include/__chrono/parser_std_format_spec.h b/lib/libcxx/include/__chrono/parser_std_format_spec.h new file mode 100644 index 0000000..296be87 --- /dev/null +++ b/lib/libcxx/include/__chrono/parser_std_format_spec.h @@ -0,0 +1,417 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_PARSER_STD_FORMAT_SPEC_H +#define _LIBCPP___CHRONO_PARSER_STD_FORMAT_SPEC_H + +#include <__config> +#include <__format/concepts.h> +#include <__format/format_error.h> +#include <__format/format_parse_context.h> +#include <__format/formatter_string.h> +#include <__format/parser_std_format_spec.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format_spec { + +// By not placing this constant in the formatter class it's not duplicated for char and wchar_t +inline constexpr __fields __fields_chrono_fractional{ + .__precision_ = true, .__locale_specific_form_ = true, .__type_ = false}; +inline constexpr __fields __fields_chrono{.__locale_specific_form_ = true, .__type_ = false}; + +/// Flags available or required in a chrono type. +/// +/// The caller of the chrono formatter lists the types it has available and the +/// validation tests whether the requested type spec (e.g. %M) is available in +/// the formatter. +/// When the type in the chrono-format-spec isn't present in the data a +/// \ref format_error is thrown. +enum class __flags { + __second = 0x1, + __minute = 0x2, + __hour = 0x4, + __time = __hour | __minute | __second, + + __day = 0x8, + __month = 0x10, + __year = 0x20, + + __weekday = 0x40, + + __month_day = __day | __month, + __month_weekday = __weekday | __month, + __year_month = __month | __year, + __date = __day | __month | __year | __weekday, + + __date_time = __date | __time, + + __duration = 0x80 | __time, + + __time_zone = 0x100, + + __clock = __date_time | __time_zone +}; + +_LIBCPP_HIDE_FROM_ABI constexpr __flags operator&(__flags __lhs, __flags __rhs) { + return static_cast<__flags>(static_cast(__lhs) & static_cast(__rhs)); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_second(__flags __flags) { + if ((__flags & __flags::__second) != __flags::__second) + std::__throw_format_error("The supplied date time doesn't contain a second"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_minute(__flags __flags) { + if ((__flags & __flags::__minute) != __flags::__minute) + std::__throw_format_error("The supplied date time doesn't contain a minute"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_hour(__flags __flags) { + if ((__flags & __flags::__hour) != __flags::__hour) + std::__throw_format_error("The supplied date time doesn't contain an hour"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_time(__flags __flags) { + if ((__flags & __flags::__time) != __flags::__time) + std::__throw_format_error("The supplied date time doesn't contain a time"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_day(__flags __flags) { + if ((__flags & __flags::__day) != __flags::__day) + std::__throw_format_error("The supplied date time doesn't contain a day"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_month(__flags __flags) { + if ((__flags & __flags::__month) != __flags::__month) + std::__throw_format_error("The supplied date time doesn't contain a month"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_year(__flags __flags) { + if ((__flags & __flags::__year) != __flags::__year) + std::__throw_format_error("The supplied date time doesn't contain a year"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_date(__flags __flags) { + if ((__flags & __flags::__date) != __flags::__date) + std::__throw_format_error("The supplied date time doesn't contain a date"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_date_or_duration(__flags __flags) { + if (((__flags & __flags::__date) != __flags::__date) && ((__flags & __flags::__duration) != __flags::__duration)) + std::__throw_format_error("The supplied date time doesn't contain a date or duration"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_date_time(__flags __flags) { + if ((__flags & __flags::__date_time) != __flags::__date_time) + std::__throw_format_error("The supplied date time doesn't contain a date and time"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_weekday(__flags __flags) { + if ((__flags & __flags::__weekday) != __flags::__weekday) + std::__throw_format_error("The supplied date time doesn't contain a weekday"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_duration(__flags __flags) { + if ((__flags & __flags::__duration) != __flags::__duration) + std::__throw_format_error("The supplied date time doesn't contain a duration"); +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __validate_time_zone(__flags __flags) { + if ((__flags & __flags::__time_zone) != __flags::__time_zone) + std::__throw_format_error("The supplied date time doesn't contain a time zone"); +} + +template +class _LIBCPP_TEMPLATE_VIS __parser_chrono { + using _ConstIterator = typename basic_format_parse_context<_CharT>::const_iterator; + +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator + __parse(_ParseContext& __ctx, __fields __fields, __flags __flags) { + _ConstIterator __begin = __parser_.__parse(__ctx, __fields); + _ConstIterator __end = __ctx.end(); + if (__begin == __end) + return __begin; + + _ConstIterator __last = __parse_chrono_specs(__begin, __end, __flags); + __chrono_specs_ = basic_string_view<_CharT>{__begin, __last}; + + return __last; + } + + __parser<_CharT> __parser_; + basic_string_view<_CharT> __chrono_specs_; + +private: + _LIBCPP_HIDE_FROM_ABI constexpr _ConstIterator + __parse_chrono_specs(_ConstIterator __begin, _ConstIterator __end, __flags __flags) { + _LIBCPP_ASSERT_UNCATEGORIZED( + __begin != __end, + "When called with an empty input the function will cause " + "undefined behavior by evaluating data not in the input"); + + if (*__begin != _CharT('%') && *__begin != _CharT('}')) + std::__throw_format_error("The format specifier expects a '%' or a '}'"); + + do { + switch (*__begin) { + case _CharT('{'): + std::__throw_format_error("The chrono specifiers contain a '{'"); + + case _CharT('}'): + return __begin; + + case _CharT('%'): + __parse_conversion_spec(__begin, __end, __flags); + [[fallthrough]]; + + default: + // All other literals + ++__begin; + } + + } while (__begin != __end && *__begin != _CharT('}')); + + return __begin; + } + + /// \pre *__begin == '%' + /// \post __begin points at the end parsed conversion-spec + _LIBCPP_HIDE_FROM_ABI constexpr void + __parse_conversion_spec(_ConstIterator& __begin, _ConstIterator __end, __flags __flags) { + ++__begin; + if (__begin == __end) + std::__throw_format_error("End of input while parsing a conversion specifier"); + + switch (*__begin) { + case _CharT('n'): + case _CharT('t'): + case _CharT('%'): + break; + + case _CharT('S'): + __format_spec::__validate_second(__flags); + break; + + case _CharT('M'): + __format_spec::__validate_minute(__flags); + break; + + case _CharT('p'): // TODO FMT does the formater require an hour or a time? + case _CharT('H'): + case _CharT('I'): + __parser_.__hour_ = true; + __validate_hour(__flags); + break; + + case _CharT('r'): + case _CharT('R'): + case _CharT('T'): + case _CharT('X'): + __parser_.__hour_ = true; + __format_spec::__validate_time(__flags); + break; + + case _CharT('d'): + case _CharT('e'): + __format_spec::__validate_day(__flags); + break; + + case _CharT('b'): + case _CharT('h'): + case _CharT('B'): + __parser_.__month_name_ = true; + [[fallthrough]]; + case _CharT('m'): + __format_spec::__validate_month(__flags); + break; + + case _CharT('y'): + case _CharT('C'): + case _CharT('Y'): + __format_spec::__validate_year(__flags); + break; + + case _CharT('j'): + __parser_.__day_of_year_ = true; + __format_spec::__validate_date_or_duration(__flags); + break; + + case _CharT('g'): + case _CharT('G'): + case _CharT('U'): + case _CharT('V'): + case _CharT('W'): + __parser_.__week_of_year_ = true; + [[fallthrough]]; + case _CharT('x'): + case _CharT('D'): + case _CharT('F'): + __format_spec::__validate_date(__flags); + break; + + case _CharT('c'): + __format_spec::__validate_date_time(__flags); + break; + + case _CharT('a'): + case _CharT('A'): + __parser_.__weekday_name_ = true; + [[fallthrough]]; + case _CharT('u'): + case _CharT('w'): + __parser_.__weekday_ = true; + __validate_weekday(__flags); + __format_spec::__validate_weekday(__flags); + break; + + case _CharT('q'): + case _CharT('Q'): + __format_spec::__validate_duration(__flags); + break; + + case _CharT('E'): + __parse_modifier_E(__begin, __end, __flags); + break; + + case _CharT('O'): + __parse_modifier_O(__begin, __end, __flags); + break; + + case _CharT('z'): + case _CharT('Z'): + // Currently there's no time zone information. However some clocks have a + // hard-coded "time zone", for these clocks the information can be used. + // TODO FMT implement time zones. + __format_spec::__validate_time_zone(__flags); + break; + + default: // unknown type; + std::__throw_format_error("The date time type specifier is invalid"); + } + } + + /// \pre *__begin == 'E' + /// \post __begin is incremented by one. + _LIBCPP_HIDE_FROM_ABI constexpr void + __parse_modifier_E(_ConstIterator& __begin, _ConstIterator __end, __flags __flags) { + ++__begin; + if (__begin == __end) + std::__throw_format_error("End of input while parsing the modifier E"); + + switch (*__begin) { + case _CharT('X'): + __parser_.__hour_ = true; + __format_spec::__validate_time(__flags); + break; + + case _CharT('y'): + case _CharT('C'): + case _CharT('Y'): + __format_spec::__validate_year(__flags); + break; + + case _CharT('x'): + __format_spec::__validate_date(__flags); + break; + + case _CharT('c'): + __format_spec::__validate_date_time(__flags); + break; + + case _CharT('z'): + // Currently there's no time zone information. However some clocks have a + // hard-coded "time zone", for these clocks the information can be used. + // TODO FMT implement time zones. + __format_spec::__validate_time_zone(__flags); + break; + + default: + std::__throw_format_error("The date time type specifier for modifier E is invalid"); + } + } + + /// \pre *__begin == 'O' + /// \post __begin is incremented by one. + _LIBCPP_HIDE_FROM_ABI constexpr void + __parse_modifier_O(_ConstIterator& __begin, _ConstIterator __end, __flags __flags) { + ++__begin; + if (__begin == __end) + std::__throw_format_error("End of input while parsing the modifier O"); + + switch (*__begin) { + case _CharT('S'): + __format_spec::__validate_second(__flags); + break; + + case _CharT('M'): + __format_spec::__validate_minute(__flags); + break; + + case _CharT('I'): + case _CharT('H'): + __parser_.__hour_ = true; + __format_spec::__validate_hour(__flags); + break; + + case _CharT('d'): + case _CharT('e'): + __format_spec::__validate_day(__flags); + break; + + case _CharT('m'): + __format_spec::__validate_month(__flags); + break; + + case _CharT('y'): + __format_spec::__validate_year(__flags); + break; + + case _CharT('U'): + case _CharT('V'): + case _CharT('W'): + __parser_.__week_of_year_ = true; + __format_spec::__validate_date(__flags); + break; + + case _CharT('u'): + case _CharT('w'): + __parser_.__weekday_ = true; + __format_spec::__validate_weekday(__flags); + break; + + case _CharT('z'): + // Currently there's no time zone information. However some clocks have a + // hard-coded "time zone", for these clocks the information can be used. + // TODO FMT implement time zones. + __format_spec::__validate_time_zone(__flags); + break; + + default: + std::__throw_format_error("The date time type specifier for modifier O is invalid"); + } + } +}; + +} // namespace __format_spec + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_PARSER_STD_FORMAT_SPEC_H diff --git a/lib/libcxx/include/__chrono/statically_widen.h b/lib/libcxx/include/__chrono/statically_widen.h new file mode 100644 index 0000000..a18c46f --- /dev/null +++ b/lib/libcxx/include/__chrono/statically_widen.h @@ -0,0 +1,52 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_STATICALLY_WIDEN_H +#define _LIBCPP___CHRONO_STATICALLY_WIDEN_H + +// Implements the STATICALLY-WIDEN exposition-only function. ([time.general]/2) + +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <__fmt_char_type _CharT> +_LIBCPP_HIDE_FROM_ABI constexpr const _CharT* __statically_widen(const char* __str, const wchar_t* __wstr) { + if constexpr (same_as<_CharT, char>) + return __str; + else + return __wstr; +} +# define _LIBCPP_STATICALLY_WIDEN(_CharT, __str) ::std::__statically_widen<_CharT>(__str, L##__str) +# else // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +// Without this indirection the unit test test/libcxx/modules_include.sh.cpp +// fails for the CI build "No wide characters". This seems like a bug. +// TODO FMT investigate why this is needed. +template <__fmt_char_type _CharT> +_LIBCPP_HIDE_FROM_ABI constexpr const _CharT* __statically_widen(const char* __str) { + return __str; +} +# define _LIBCPP_STATICALLY_WIDEN(_CharT, __str) ::std::__statically_widen<_CharT>(__str) +# endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_STATICALLY_WIDEN_H diff --git a/lib/libcxx/include/__chrono/steady_clock.h b/lib/libcxx/include/__chrono/steady_clock.h new file mode 100644 index 0000000..cdcd2fa --- /dev/null +++ b/lib/libcxx/include/__chrono/steady_clock.h @@ -0,0 +1,44 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_STEADY_CLOCK_H +#define _LIBCPP___CHRONO_STEADY_CLOCK_H + +#include <__chrono/duration.h> +#include <__chrono/time_point.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK +class _LIBCPP_EXPORTED_FROM_ABI steady_clock +{ +public: + typedef nanoseconds duration; + typedef duration::rep rep; + typedef duration::period period; + typedef chrono::time_point time_point; + static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = true; + + static time_point now() _NOEXCEPT; +}; +#endif + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_STEADY_CLOCK_H diff --git a/lib/libcxx/include/__chrono/system_clock.h b/lib/libcxx/include/__chrono/system_clock.h new file mode 100644 index 0000000..06fe071 --- /dev/null +++ b/lib/libcxx/include/__chrono/system_clock.h @@ -0,0 +1,54 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_SYSTEM_CLOCK_H +#define _LIBCPP___CHRONO_SYSTEM_CLOCK_H + +#include <__chrono/duration.h> +#include <__chrono/time_point.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class _LIBCPP_EXPORTED_FROM_ABI system_clock +{ +public: + typedef microseconds duration; + typedef duration::rep rep; + typedef duration::period period; + typedef chrono::time_point time_point; + static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = false; + + static time_point now() _NOEXCEPT; + static time_t to_time_t (const time_point& __t) _NOEXCEPT; + static time_point from_time_t(time_t __t) _NOEXCEPT; +}; + +#if _LIBCPP_STD_VER >= 20 + +template +using sys_time = time_point; +using sys_seconds = sys_time; +using sys_days = sys_time; + +#endif + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CHRONO_SYSTEM_CLOCK_H diff --git a/lib/libcxx/include/__chrono/time_point.h b/lib/libcxx/include/__chrono/time_point.h new file mode 100644 index 0000000..c148354 --- /dev/null +++ b/lib/libcxx/include/__chrono/time_point.h @@ -0,0 +1,267 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_TIME_POINT_H +#define _LIBCPP___CHRONO_TIME_POINT_H + +#include <__chrono/duration.h> +#include <__compare/ordering.h> +#include <__compare/three_way_comparable.h> +#include <__config> +#include <__type_traits/common_type.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_convertible.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +template +class _LIBCPP_TEMPLATE_VIS time_point +{ + static_assert(__is_duration<_Duration>::value, + "Second template parameter of time_point must be a std::chrono::duration"); +public: + typedef _Clock clock; + typedef _Duration duration; + typedef typename duration::rep rep; + typedef typename duration::period period; +private: + duration __d_; + +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 time_point() : __d_(duration::zero()) {} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit time_point(const duration& __d) : __d_(__d) {} + + // conversions + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 + time_point(const time_point& __t, + typename enable_if + < + is_convertible<_Duration2, duration>::value + >::type* = nullptr) + : __d_(__t.time_since_epoch()) {} + + // observer + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 duration time_since_epoch() const {return __d_;} + + // arithmetic + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 time_point& operator+=(const duration& __d) {__d_ += __d; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;} + + // special values + + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() _NOEXCEPT {return time_point(duration::min());} + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() _NOEXCEPT {return time_point(duration::max());} +}; + +} // namespace chrono + +template +struct _LIBCPP_TEMPLATE_VIS common_type, + chrono::time_point<_Clock, _Duration2> > +{ + typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type; +}; + +namespace chrono { + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +time_point<_Clock, _ToDuration> +time_point_cast(const time_point<_Clock, _Duration>& __t) +{ + return time_point<_Clock, _ToDuration>(chrono::duration_cast<_ToDuration>(__t.time_since_epoch())); +} + +#if _LIBCPP_STD_VER >= 17 +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + time_point<_Clock, _ToDuration> +>::type +floor(const time_point<_Clock, _Duration>& __t) +{ + return time_point<_Clock, _ToDuration>{chrono::floor<_ToDuration>(__t.time_since_epoch())}; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + time_point<_Clock, _ToDuration> +>::type +ceil(const time_point<_Clock, _Duration>& __t) +{ + return time_point<_Clock, _ToDuration>{chrono::ceil<_ToDuration>(__t.time_since_epoch())}; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + __is_duration<_ToDuration>::value, + time_point<_Clock, _ToDuration> +>::type +round(const time_point<_Clock, _Duration>& __t) +{ + return time_point<_Clock, _ToDuration>{chrono::round<_ToDuration>(__t.time_since_epoch())}; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +typename enable_if +< + numeric_limits<_Rep>::is_signed, + duration<_Rep, _Period> +>::type +abs(duration<_Rep, _Period> __d) +{ + return __d >= __d.zero() ? +__d : -__d; +} +#endif // _LIBCPP_STD_VER >= 17 + +// time_point == + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return __lhs.time_since_epoch() == __rhs.time_since_epoch(); +} + +#if _LIBCPP_STD_VER <= 17 + +// time_point != + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return !(__lhs == __rhs); +} + +#endif // _LIBCPP_STD_VER <= 17 + +// time_point < + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return __lhs.time_since_epoch() < __rhs.time_since_epoch(); +} + +// time_point > + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return __rhs < __lhs; +} + +// time_point <= + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return !(__rhs < __lhs); +} + +// time_point >= + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +bool +operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return !(__lhs < __rhs); +} + +#if _LIBCPP_STD_VER >= 20 + +template _Duration2> +_LIBCPP_HIDE_FROM_ABI constexpr auto +operator<=>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) { + return __lhs.time_since_epoch() <=> __rhs.time_since_epoch(); +} + +#endif // _LIBCPP_STD_VER >= 20 + +// time_point operator+(time_point x, duration y); + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> +operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr; + return _Tr (__lhs.time_since_epoch() + __rhs); +} + +// time_point operator+(duration x, time_point y); + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +time_point<_Clock, typename common_type, _Duration2>::type> +operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return __rhs + __lhs; +} + +// time_point operator-(time_point x, duration y); + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> +operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) +{ + typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret; + return _Ret(__lhs.time_since_epoch() -__rhs); +} + +// duration operator-(time_point x, time_point y); + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +typename common_type<_Duration1, _Duration2>::type +operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) +{ + return __lhs.time_since_epoch() - __rhs.time_since_epoch(); +} + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHRONO_TIME_POINT_H diff --git a/lib/libcxx/include/__chrono/weekday.h b/lib/libcxx/include/__chrono/weekday.h new file mode 100644 index 0000000..776d8ed --- /dev/null +++ b/lib/libcxx/include/__chrono/weekday.h @@ -0,0 +1,172 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_WEEKDAY_H +#define _LIBCPP___CHRONO_WEEKDAY_H + +#include <__chrono/calendar.h> +#include <__chrono/duration.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class weekday_indexed; +class weekday_last; + +class weekday { +private: + unsigned char __wd_; + _LIBCPP_HIDE_FROM_ABI static constexpr unsigned char __weekday_from_days(int __days) noexcept; +public: + weekday() = default; + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr weekday(unsigned __val) noexcept : __wd_(static_cast(__val == 7 ? 0 : __val)) {} + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday(const sys_days& __sysd) noexcept + : __wd_(__weekday_from_days(__sysd.time_since_epoch().count())) {} + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr weekday(const local_days& __locd) noexcept + : __wd_(__weekday_from_days(__locd.time_since_epoch().count())) {} + + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday& operator++() noexcept { __wd_ = (__wd_ == 6 ? 0 : __wd_ + 1); return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday operator++(int) noexcept { weekday __tmp = *this; ++(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday& operator--() noexcept { __wd_ = (__wd_ == 0 ? 6 : __wd_ - 1); return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday operator--(int) noexcept { weekday __tmp = *this; --(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI constexpr weekday& operator+=(const days& __dd) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr weekday& operator-=(const days& __dd) noexcept; + _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned c_encoding() const noexcept { return __wd_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned iso_encoding() const noexcept { return __wd_ == 0u ? 7 : __wd_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __wd_ <= 6; } + _LIBCPP_HIDE_FROM_ABI constexpr weekday_indexed operator[](unsigned __index) const noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr weekday_last operator[](last_spec) const noexcept; +}; + + +// https://howardhinnant.github.io/date_algorithms.html#weekday_from_days +_LIBCPP_HIDE_FROM_ABI inline constexpr +unsigned char weekday::__weekday_from_days(int __days) noexcept +{ + return static_cast( + static_cast(__days >= -4 ? (__days+4) % 7 : (__days+5) % 7 + 6) + ); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const weekday& __lhs, const weekday& __rhs) noexcept +{ return __lhs.c_encoding() == __rhs.c_encoding(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator< (const weekday& __lhs, const weekday& __rhs) noexcept +{ return __lhs.c_encoding() < __rhs.c_encoding(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator> (const weekday& __lhs, const weekday& __rhs) noexcept +{ return __rhs < __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator<=(const weekday& __lhs, const weekday& __rhs) noexcept +{ return !(__rhs < __lhs);} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator>=(const weekday& __lhs, const weekday& __rhs) noexcept +{ return !(__lhs < __rhs); } + +_LIBCPP_HIDE_FROM_ABI constexpr +weekday operator+(const weekday& __lhs, const days& __rhs) noexcept +{ + auto const __mu = static_cast(__lhs.c_encoding()) + __rhs.count(); + auto const __yr = (__mu >= 0 ? __mu : __mu - 6) / 7; + return weekday{static_cast(__mu - __yr * 7)}; +} + +_LIBCPP_HIDE_FROM_ABI constexpr +weekday operator+(const days& __lhs, const weekday& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +weekday operator-(const weekday& __lhs, const days& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +days operator-(const weekday& __lhs, const weekday& __rhs) noexcept +{ + const int __wdu = __lhs.c_encoding() - __rhs.c_encoding(); + const int __wk = (__wdu >= 0 ? __wdu : __wdu-6) / 7; + return days{__wdu - __wk * 7}; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +weekday& weekday::operator+=(const days& __dd) noexcept +{ *this = *this + __dd; return *this; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +weekday& weekday::operator-=(const days& __dd) noexcept +{ *this = *this - __dd; return *this; } + +class weekday_indexed { +private: + chrono::weekday __wd_; + unsigned char __idx_; +public: + weekday_indexed() = default; + _LIBCPP_HIDE_FROM_ABI inline constexpr weekday_indexed(const chrono::weekday& __wdval, unsigned __idxval) noexcept + : __wd_{__wdval}, __idx_(__idxval) {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wd_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned index() const noexcept { return __idx_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __wd_.ok() && __idx_ >= 1 && __idx_ <= 5; } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept +{ return __lhs.weekday() == __rhs.weekday() && __lhs.index() == __rhs.index(); } + +class weekday_last { +private: + chrono::weekday __wd_; +public: + _LIBCPP_HIDE_FROM_ABI explicit constexpr weekday_last(const chrono::weekday& __val) noexcept + : __wd_{__val} {} + _LIBCPP_HIDE_FROM_ABI constexpr chrono::weekday weekday() const noexcept { return __wd_; } + _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept { return __wd_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const weekday_last& __lhs, const weekday_last& __rhs) noexcept +{ return __lhs.weekday() == __rhs.weekday(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +weekday_indexed weekday::operator[](unsigned __index) const noexcept { return weekday_indexed{*this, __index}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +weekday_last weekday::operator[](last_spec) const noexcept { return weekday_last{*this}; } + + +inline constexpr weekday Sunday{0}; +inline constexpr weekday Monday{1}; +inline constexpr weekday Tuesday{2}; +inline constexpr weekday Wednesday{3}; +inline constexpr weekday Thursday{4}; +inline constexpr weekday Friday{5}; +inline constexpr weekday Saturday{6}; + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_WEEKDAY_H diff --git a/lib/libcxx/include/__chrono/year.h b/lib/libcxx/include/__chrono/year.h new file mode 100644 index 0000000..14bcbda --- /dev/null +++ b/lib/libcxx/include/__chrono/year.h @@ -0,0 +1,102 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_YEAR_H +#define _LIBCPP___CHRONO_YEAR_H + +#include <__chrono/duration.h> +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class year { +private: + short __y_; +public: + year() = default; + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr year(int __val) noexcept : __y_(static_cast(__val)) {} + + _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator++() noexcept { ++__y_; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year operator++(int) noexcept { year __tmp = *this; ++(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator--() noexcept { --__y_; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year operator--(int) noexcept { year __tmp = *this; --(*this); return __tmp; } + _LIBCPP_HIDE_FROM_ABI constexpr year& operator+=(const years& __dy) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year& operator-=(const years& __dy) noexcept; + _LIBCPP_HIDE_FROM_ABI inline constexpr year operator+() const noexcept { return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year operator-() const noexcept { return year{-__y_}; } + + _LIBCPP_HIDE_FROM_ABI inline constexpr bool is_leap() const noexcept { return __y_ % 4 == 0 && (__y_ % 100 != 0 || __y_ % 400 == 0); } + _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator int() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept; + _LIBCPP_HIDE_FROM_ABI static inline constexpr year min() noexcept { return year{-32767}; } + _LIBCPP_HIDE_FROM_ABI static inline constexpr year max() noexcept { return year{ 32767}; } +}; + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year& __lhs, const year& __rhs) noexcept +{ return static_cast(__lhs) == static_cast(__rhs); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const year& __lhs, const year& __rhs) noexcept { + return static_cast(__lhs) <=> static_cast(__rhs); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year operator+ (const year& __lhs, const years& __rhs) noexcept +{ return year(static_cast(__lhs) + __rhs.count()); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year operator+ (const years& __lhs, const year& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year operator- (const year& __lhs, const years& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +years operator-(const year& __lhs, const year& __rhs) noexcept +{ return years{static_cast(__lhs) - static_cast(__rhs)}; } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year& year::operator+=(const years& __dy) noexcept +{ *this = *this + __dy; return *this; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year& year::operator-=(const years& __dy) noexcept +{ *this = *this - __dy; return *this; } + +_LIBCPP_HIDE_FROM_ABI constexpr bool year::ok() const noexcept { + static_assert(static_cast(std::numeric_limits::max()) == static_cast(max())); + return static_cast(min()) <= __y_; +} + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CHRONO_YEAR_H diff --git a/lib/libcxx/include/__chrono/year_month.h b/lib/libcxx/include/__chrono/year_month.h new file mode 100644 index 0000000..f4eea84 --- /dev/null +++ b/lib/libcxx/include/__chrono/year_month.h @@ -0,0 +1,101 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_YEAR_MONTH_H +#define _LIBCPP___CHRONO_YEAR_MONTH_H + +#include <__chrono/duration.h> +#include <__chrono/month.h> +#include <__chrono/year.h> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class year_month { + chrono::year __y_; + chrono::month __m_; +public: + year_month() = default; + _LIBCPP_HIDE_FROM_ABI constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept + : __y_{__yval}, __m_{__mval} {} + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const months& __dm) noexcept { this->__m_ += __dm; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const months& __dm) noexcept { this->__m_ -= __dm; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const years& __dy) noexcept { this->__y_ += __dy; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const years& __dy) noexcept { this->__y_ -= __dy; return *this; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __m_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month operator/(const year& __y, const month& __m) noexcept { return year_month{__y, __m}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month operator/(const year& __y, int __m) noexcept { return year_month{__y, month(__m)}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept +{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month(); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const year_month& __lhs, const year_month& __rhs) noexcept { + if (auto __c = __lhs.year() <=> __rhs.year(); __c != 0) + return __c; + return __lhs.month() <=> __rhs.month(); +} + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator+(const year_month& __lhs, const months& __rhs) noexcept +{ + int __dmi = static_cast(static_cast(__lhs.month())) - 1 + __rhs.count(); + const int __dy = (__dmi >= 0 ? __dmi : __dmi-11) / 12; + __dmi = __dmi - __dy * 12 + 1; + return (__lhs.year() + years(__dy)) / month(static_cast(__dmi)); +} + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator+(const months& __lhs, const year_month& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator+(const year_month& __lhs, const years& __rhs) noexcept +{ return (__lhs.year() + __rhs) / __lhs.month(); } + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator+(const years& __lhs, const year_month& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +months operator-(const year_month& __lhs, const year_month& __rhs) noexcept +{ return (__lhs.year() - __rhs.year()) + months(static_cast(__lhs.month()) - static_cast(__rhs.month())); } + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator-(const year_month& __lhs, const months& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI constexpr +year_month operator-(const year_month& __lhs, const years& __rhs) noexcept +{ return __lhs + -__rhs; } + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_YEAR_MONTH_H diff --git a/lib/libcxx/include/__chrono/year_month_day.h b/lib/libcxx/include/__chrono/year_month_day.h new file mode 100644 index 0000000..ed5903f --- /dev/null +++ b/lib/libcxx/include/__chrono/year_month_day.h @@ -0,0 +1,307 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_YEAR_MONTH_DAY_H +#define _LIBCPP___CHRONO_YEAR_MONTH_DAY_H + +#include <__chrono/calendar.h> +#include <__chrono/day.h> +#include <__chrono/duration.h> +#include <__chrono/month.h> +#include <__chrono/monthday.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__chrono/year.h> +#include <__chrono/year_month.h> +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class year_month_day_last; + +class year_month_day { +private: + chrono::year __y_; + chrono::month __m_; + chrono::day __d_; +public: + year_month_day() = default; + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day( + const chrono::year& __yval, const chrono::month& __mval, const chrono::day& __dval) noexcept + : __y_{__yval}, __m_{__mval}, __d_{__dval} {} + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day(const year_month_day_last& __ymdl) noexcept; + _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day(const sys_days& __sysd) noexcept + : year_month_day(__from_days(__sysd.time_since_epoch())) {} + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr year_month_day(const local_days& __locd) noexcept + : year_month_day(__from_days(__locd.time_since_epoch())) {} + + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day& operator+=(const months& __dm) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day& operator-=(const months& __dm) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day& operator+=(const years& __dy) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day& operator-=(const years& __dy) noexcept; + + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::day day() const noexcept { return __d_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } + + _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept; + + _LIBCPP_HIDE_FROM_ABI static constexpr year_month_day __from_days(days __d) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept; +}; + + +// https://howardhinnant.github.io/date_algorithms.html#civil_from_days +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day year_month_day::__from_days(days __d) noexcept +{ + static_assert(numeric_limits::digits >= 18, ""); + static_assert(numeric_limits::digits >= 20 , ""); + const int __z = __d.count() + 719468; + const int __era = (__z >= 0 ? __z : __z - 146096) / 146097; + const unsigned __doe = static_cast(__z - __era * 146097); // [0, 146096] + const unsigned __yoe = (__doe - __doe/1460 + __doe/36524 - __doe/146096) / 365; // [0, 399] + const int __yr = static_cast(__yoe) + __era * 400; + const unsigned __doy = __doe - (365 * __yoe + __yoe/4 - __yoe/100); // [0, 365] + const unsigned __mp = (5 * __doy + 2)/153; // [0, 11] + const unsigned __dy = __doy - (153 * __mp + 2)/5 + 1; // [1, 31] + const unsigned __mth = __mp + (__mp < 10 ? 3 : -9); // [1, 12] + return year_month_day{chrono::year{__yr + (__mth <= 2)}, chrono::month{__mth}, chrono::day{__dy}}; +} + +// https://howardhinnant.github.io/date_algorithms.html#days_from_civil +_LIBCPP_HIDE_FROM_ABI inline constexpr +days year_month_day::__to_days() const noexcept +{ + static_assert(numeric_limits::digits >= 18, ""); + static_assert(numeric_limits::digits >= 20 , ""); + + const int __yr = static_cast(__y_) - (__m_ <= February); + const unsigned __mth = static_cast(__m_); + const unsigned __dy = static_cast(__d_); + + const int __era = (__yr >= 0 ? __yr : __yr - 399) / 400; + const unsigned __yoe = static_cast(__yr - __era * 400); // [0, 399] + const unsigned __doy = (153 * (__mth + (__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1; // [0, 365] + const unsigned __doe = __yoe * 365 + __yoe/4 - __yoe/100 + __doy; // [0, 146096] + return days{__era * 146097 + static_cast(__doe) - 719468}; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year_month_day& __lhs, const year_month_day& __rhs) noexcept +{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); } + +_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering +operator<=>(const year_month_day& __lhs, const year_month_day& __rhs) noexcept { + if (auto __c = __lhs.year() <=> __rhs.year(); __c != 0) + return __c; + if (auto __c = __lhs.month() <=> __rhs.month(); __c != 0) + return __c; + return __lhs.day() <=> __rhs.day(); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(const year_month& __lhs, const day& __rhs) noexcept +{ return year_month_day{__lhs.year(), __lhs.month(), __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(const year_month& __lhs, int __rhs) noexcept +{ return __lhs / day(__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(const year& __lhs, const month_day& __rhs) noexcept +{ return __lhs / __rhs.month() / __rhs.day(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(int __lhs, const month_day& __rhs) noexcept +{ return year(__lhs) / __rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(const month_day& __lhs, const year& __rhs) noexcept +{ return __rhs / __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator/(const month_day& __lhs, int __rhs) noexcept +{ return year(__rhs) / __lhs; } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator+(const year_month_day& __lhs, const months& __rhs) noexcept +{ return (__lhs.year()/__lhs.month() + __rhs)/__lhs.day(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator+(const months& __lhs, const year_month_day& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator-(const year_month_day& __lhs, const months& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator+(const year_month_day& __lhs, const years& __rhs) noexcept +{ return (__lhs.year() + __rhs) / __lhs.month() / __lhs.day(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator+(const years& __lhs, const year_month_day& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day operator-(const year_month_day& __lhs, const years& __rhs) noexcept +{ return __lhs + -__rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day& year_month_day::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day& year_month_day::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day& year_month_day::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day& year_month_day::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } + +class year_month_day_last { +private: + chrono::year __y_; + chrono::month_day_last __mdl_; +public: + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day_last(const year& __yval, const month_day_last& __mdlval) noexcept + : __y_{__yval}, __mdl_{__mdlval} {} + + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day_last& operator+=(const months& __m) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day_last& operator-=(const months& __m) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day_last& operator+=(const years& __y) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_day_last& operator-=(const years& __y) noexcept; + + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __mdl_.month(); } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month_day_last month_day_last() const noexcept { return __mdl_; } + _LIBCPP_HIDE_FROM_ABI constexpr chrono::day day() const noexcept; + _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{year()/month()/day()}; } + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { return local_days{year()/month()/day()}; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __mdl_.ok(); } +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +chrono::day year_month_day_last::day() const noexcept +{ + constexpr chrono::day __d[] = + { + chrono::day(31), chrono::day(28), chrono::day(31), + chrono::day(30), chrono::day(31), chrono::day(30), + chrono::day(31), chrono::day(31), chrono::day(30), + chrono::day(31), chrono::day(30), chrono::day(31) + }; + return (month() != February || !__y_.is_leap()) && month().ok() ? + __d[static_cast(month()) - 1] : chrono::day{29}; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ return __lhs.year() == __rhs.year() && __lhs.month_day_last() == __rhs.month_day_last(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator!=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ return !(__lhs == __rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator< (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ + if (__lhs.year() < __rhs.year()) return true; + if (__lhs.year() > __rhs.year()) return false; + return __lhs.month_day_last() < __rhs.month_day_last(); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator> (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ return __rhs < __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator<=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ return !(__rhs < __lhs);} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator>=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept +{ return !(__lhs < __rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator/(const year_month& __lhs, last_spec) noexcept +{ return year_month_day_last{__lhs.year(), month_day_last{__lhs.month()}}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator/(const year& __lhs, const month_day_last& __rhs) noexcept +{ return year_month_day_last{__lhs, __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator/(int __lhs, const month_day_last& __rhs) noexcept +{ return year_month_day_last{year{__lhs}, __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day_last +operator/(const month_day_last& __lhs, const year& __rhs) noexcept +{ return __rhs / __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator/(const month_day_last& __lhs, int __rhs) noexcept +{ return year{__rhs} / __lhs; } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator+(const year_month_day_last& __lhs, const months& __rhs) noexcept +{ return (__lhs.year() / __lhs.month() + __rhs) / last; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator+(const months& __lhs, const year_month_day_last& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator-(const year_month_day_last& __lhs, const months& __rhs) noexcept +{ return __lhs + (-__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator+(const year_month_day_last& __lhs, const years& __rhs) noexcept +{ return year_month_day_last{__lhs.year() + __rhs, __lhs.month_day_last()}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator+(const years& __lhs, const year_month_day_last& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day_last operator-(const year_month_day_last& __lhs, const years& __rhs) noexcept +{ return __lhs + (-__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day_last& year_month_day_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day_last& year_month_day_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day_last& year_month_day_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_day_last& year_month_day_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept + : __y_{__ymdl.year()}, __m_{__ymdl.month()}, __d_{__ymdl.day()} {} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool year_month_day::ok() const noexcept +{ + if (!__y_.ok() || !__m_.ok()) return false; + return chrono::day{1} <= __d_ && __d_ <= (__y_ / __m_ / last).day(); +} + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_YEAR_MONTH_DAY_H diff --git a/lib/libcxx/include/__chrono/year_month_weekday.h b/lib/libcxx/include/__chrono/year_month_weekday.h new file mode 100644 index 0000000..4b5cb49 --- /dev/null +++ b/lib/libcxx/include/__chrono/year_month_weekday.h @@ -0,0 +1,246 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H +#define _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H + +#include <__chrono/calendar.h> +#include <__chrono/day.h> +#include <__chrono/duration.h> +#include <__chrono/month.h> +#include <__chrono/month_weekday.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__chrono/weekday.h> +#include <__chrono/year.h> +#include <__chrono/year_month.h> +#include <__chrono/year_month_day.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace chrono +{ + +class year_month_weekday { + chrono::year __y_; + chrono::month __m_; + chrono::weekday_indexed __wdi_; +public: + year_month_weekday() = default; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday(const chrono::year& __yval, const chrono::month& __mval, + const chrono::weekday_indexed& __wdival) noexcept + : __y_{__yval}, __m_{__mval}, __wdi_{__wdival} {} + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday(const sys_days& __sysd) noexcept + : year_month_weekday(__from_days(__sysd.time_since_epoch())) {} + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr year_month_weekday(const local_days& __locd) noexcept + : year_month_weekday(__from_days(__locd.time_since_epoch())) {} + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator+=(const months&) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator-=(const months&) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator+=(const years&) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator-=(const years&) noexcept; + + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdi_.weekday(); } + _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned index() const noexcept { return __wdi_.index(); } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi_; } + + _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept + { + if (!__y_.ok() || !__m_.ok() || !__wdi_.ok()) return false; + if (__wdi_.index() <= 4) return true; + auto __nth_weekday_day = + __wdi_.weekday() - + chrono::weekday{static_cast(__y_ / __m_ / 1)} + + days{(__wdi_.index() - 1) * 7 + 1}; + return static_cast(__nth_weekday_day.count()) <= + static_cast((__y_ / __m_ / last).day()); + } + + _LIBCPP_HIDE_FROM_ABI static constexpr year_month_weekday __from_days(days __d) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept; +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday year_month_weekday::__from_days(days __d) noexcept +{ + const sys_days __sysd{__d}; + const chrono::weekday __wd = chrono::weekday(__sysd); + const year_month_day __ymd = year_month_day(__sysd); + return year_month_weekday{__ymd.year(), __ymd.month(), + __wd[(static_cast(__ymd.day())-1)/7+1]}; +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +days year_month_weekday::__to_days() const noexcept +{ + const sys_days __sysd = sys_days(__y_/__m_/1); + return (__sysd + (__wdi_.weekday() - chrono::weekday(__sysd) + days{(__wdi_.index()-1)*7})) + .time_since_epoch(); +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept +{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept +{ return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator/(const year& __lhs, const month_weekday& __rhs) noexcept +{ return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept +{ return year(__lhs) / __rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator/(const month_weekday& __lhs, const year& __rhs) noexcept +{ return __rhs / __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept +{ return year(__rhs) / __lhs; } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept +{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept +{ return __lhs + (-__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept +{ return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept +{ return __lhs + (-__rhs); } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } + +class year_month_weekday_last { +private: + chrono::year __y_; + chrono::month __m_; + chrono::weekday_last __wdl_; +public: + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last(const chrono::year& __yval, const chrono::month& __mval, + const chrono::weekday_last& __wdlval) noexcept + : __y_{__yval}, __m_{__mval}, __wdl_{__wdlval} {} + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept; + _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept; + + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdl_.weekday(); } + _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl_; } + _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } + _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } + _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __m_.ok() && __wdl_.ok(); } + + _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept; + +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr +days year_month_weekday_last::__to_days() const noexcept +{ + const sys_days __last = sys_days{__y_/__m_/last}; + return (__last - (chrono::weekday{__last} - __wdl_.weekday())).time_since_epoch(); + +} + +_LIBCPP_HIDE_FROM_ABI inline constexpr +bool operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept +{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept +{ return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept +{ return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator/(int __lhs, const month_weekday_last& __rhs) noexcept +{ return year(__lhs) / __rhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept +{ return __rhs / __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator/(const month_weekday_last& __lhs, int __rhs) noexcept +{ return year(__rhs) / __lhs; } + + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept +{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept +{ return __lhs + (-__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept +{ return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept +{ return __rhs + __lhs; } + +_LIBCPP_HIDE_FROM_ABI inline constexpr +year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept +{ return __lhs + (-__rhs); } + +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } +_LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } + +} // namespace chrono + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H diff --git a/lib/libcxx/include/__compare/common_comparison_category.h b/lib/libcxx/include/__compare/common_comparison_category.h new file mode 100644 index 0000000..5fad99b --- /dev/null +++ b/lib/libcxx/include/__compare/common_comparison_category.h @@ -0,0 +1,95 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMMON_COMPARISON_CATEGORY_H +#define _LIBCPP___COMPARE_COMMON_COMPARISON_CATEGORY_H + +#include <__compare/ordering.h> +#include <__config> +#include <__type_traits/is_same.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __comp_detail { + +enum _ClassifyCompCategory : unsigned { + _None, + _PartialOrd, + _WeakOrd, + _StrongOrd, + _CCC_Size +}; + +template +_LIBCPP_HIDE_FROM_ABI +constexpr _ClassifyCompCategory __type_to_enum() noexcept { + if (is_same_v<_Tp, partial_ordering>) + return _PartialOrd; + if (is_same_v<_Tp, weak_ordering>) + return _WeakOrd; + if (is_same_v<_Tp, strong_ordering>) + return _StrongOrd; + return _None; +} + +template +_LIBCPP_HIDE_FROM_ABI +constexpr _ClassifyCompCategory +__compute_comp_type(const _ClassifyCompCategory (&__types)[_Size]) { + int __seen[_CCC_Size] = {}; + for (auto __type : __types) + ++__seen[__type]; + if (__seen[_None]) + return _None; + if (__seen[_PartialOrd]) + return _PartialOrd; + if (__seen[_WeakOrd]) + return _WeakOrd; + return _StrongOrd; +} + +template +_LIBCPP_HIDE_FROM_ABI +constexpr auto __get_comp_type() { + using _CCC = _ClassifyCompCategory; + constexpr _CCC __type_kinds[] = {_StrongOrd, __type_to_enum<_Ts>()...}; + constexpr _CCC __cat = __comp_detail::__compute_comp_type(__type_kinds); + if constexpr (__cat == _None) + return void(); + else if constexpr (__cat == _PartialOrd) + return partial_ordering::equivalent; + else if constexpr (__cat == _WeakOrd) + return weak_ordering::equivalent; + else if constexpr (__cat == _StrongOrd) + return strong_ordering::equivalent; + else + static_assert(_False, "unhandled case"); +} +} // namespace __comp_detail + +// [cmp.common], common comparison category type +template +struct _LIBCPP_TEMPLATE_VIS common_comparison_category { + using type = decltype(__comp_detail::__get_comp_type<_Ts...>()); +}; + +template +using common_comparison_category_t = typename common_comparison_category<_Ts...>::type; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMMON_COMPARISON_CATEGORY_H diff --git a/lib/libcxx/include/__compare/compare_partial_order_fallback.h b/lib/libcxx/include/__compare/compare_partial_order_fallback.h new file mode 100644 index 0000000..fb2921e --- /dev/null +++ b/lib/libcxx/include/__compare/compare_partial_order_fallback.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMPARE_PARTIAL_ORDER_FALLBACK +#define _LIBCPP___COMPARE_COMPARE_PARTIAL_ORDER_FALLBACK + +#include <__compare/ordering.h> +#include <__compare/partial_order.h> +#include <__config> +#include <__type_traits/decay.h> +#include <__type_traits/is_same.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __compare_partial_order_fallback { + struct __fn { + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) + noexcept(noexcept(_VSTD::partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + -> decltype( _VSTD::partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))) + { return _VSTD::partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? partial_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? partial_ordering::less : + _VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t) ? partial_ordering::greater : + partial_ordering::unordered)) + -> decltype( _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? partial_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? partial_ordering::less : + _VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t) ? partial_ordering::greater : + partial_ordering::unordered) + { + return _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? partial_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? partial_ordering::less : + _VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t) ? partial_ordering::greater : + partial_ordering::unordered; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()); } + }; +} // namespace __compare_partial_order_fallback + +inline namespace __cpo { + inline constexpr auto compare_partial_order_fallback = __compare_partial_order_fallback::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMPARE_PARTIAL_ORDER_FALLBACK diff --git a/lib/libcxx/include/__compare/compare_strong_order_fallback.h b/lib/libcxx/include/__compare/compare_strong_order_fallback.h new file mode 100644 index 0000000..d84d065 --- /dev/null +++ b/lib/libcxx/include/__compare/compare_strong_order_fallback.h @@ -0,0 +1,71 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMPARE_STRONG_ORDER_FALLBACK +#define _LIBCPP___COMPARE_COMPARE_STRONG_ORDER_FALLBACK + +#include <__compare/ordering.h> +#include <__compare/strong_order.h> +#include <__config> +#include <__type_traits/decay.h> +#include <__type_traits/is_same.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __compare_strong_order_fallback { + struct __fn { + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) + noexcept(noexcept(_VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + -> decltype( _VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))) + { return _VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? strong_ordering::equal : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? strong_ordering::less : + strong_ordering::greater)) + -> decltype( _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? strong_ordering::equal : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? strong_ordering::less : + strong_ordering::greater) + { + return _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? strong_ordering::equal : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? strong_ordering::less : + strong_ordering::greater; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()); } + }; +} // namespace __compare_strong_order_fallback + +inline namespace __cpo { + inline constexpr auto compare_strong_order_fallback = __compare_strong_order_fallback::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMPARE_STRONG_ORDER_FALLBACK diff --git a/lib/libcxx/include/__compare/compare_three_way.h b/lib/libcxx/include/__compare/compare_three_way.h new file mode 100644 index 0000000..2bc63a0 --- /dev/null +++ b/lib/libcxx/include/__compare/compare_three_way.h @@ -0,0 +1,41 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMPARE_THREE_WAY_H +#define _LIBCPP___COMPARE_COMPARE_THREE_WAY_H + +#include <__compare/three_way_comparable.h> +#include <__config> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +struct _LIBCPP_TEMPLATE_VIS compare_three_way +{ + template + requires three_way_comparable_with<_T1, _T2> + constexpr _LIBCPP_HIDE_FROM_ABI + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) <=> _VSTD::forward<_T2>(__u))) + { return _VSTD::forward<_T1>(__t) <=> _VSTD::forward<_T2>(__u); } + + using is_transparent = void; +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMPARE_THREE_WAY_H diff --git a/lib/libcxx/include/__compare/compare_three_way_result.h b/lib/libcxx/include/__compare/compare_three_way_result.h new file mode 100644 index 0000000..632ebdc --- /dev/null +++ b/lib/libcxx/include/__compare/compare_three_way_result.h @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMPARE_THREE_WAY_RESULT_H +#define _LIBCPP___COMPARE_COMPARE_THREE_WAY_RESULT_H + +#include <__config> +#include <__type_traits/make_const_lvalue_ref.h> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +struct _LIBCPP_HIDE_FROM_ABI __compare_three_way_result { }; + +template +struct _LIBCPP_HIDE_FROM_ABI __compare_three_way_result<_Tp, _Up, decltype( + std::declval<__make_const_lvalue_ref<_Tp>>() <=> std::declval<__make_const_lvalue_ref<_Up>>(), void() +)> { + using type = decltype(std::declval<__make_const_lvalue_ref<_Tp>>() <=> std::declval<__make_const_lvalue_ref<_Up>>()); +}; + +template +struct _LIBCPP_TEMPLATE_VIS compare_three_way_result : __compare_three_way_result<_Tp, _Up, void> { }; + +template +using compare_three_way_result_t = typename compare_three_way_result<_Tp, _Up>::type; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMPARE_THREE_WAY_RESULT_H diff --git a/lib/libcxx/include/__compare/compare_weak_order_fallback.h b/lib/libcxx/include/__compare/compare_weak_order_fallback.h new file mode 100644 index 0000000..d3ba04a --- /dev/null +++ b/lib/libcxx/include/__compare/compare_weak_order_fallback.h @@ -0,0 +1,71 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_COMPARE_WEAK_ORDER_FALLBACK +#define _LIBCPP___COMPARE_COMPARE_WEAK_ORDER_FALLBACK + +#include <__compare/ordering.h> +#include <__compare/weak_order.h> +#include <__config> +#include <__type_traits/decay.h> +#include <__type_traits/is_same.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __compare_weak_order_fallback { + struct __fn { + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) + noexcept(noexcept(_VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + -> decltype( _VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))) + { return _VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? weak_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? weak_ordering::less : + weak_ordering::greater)) + -> decltype( _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? weak_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? weak_ordering::less : + weak_ordering::greater) + { + return _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u) ? weak_ordering::equivalent : + _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u) ? weak_ordering::less : + weak_ordering::greater; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<1>()); } + }; +} // namespace __compare_weak_order_fallback + +inline namespace __cpo { + inline constexpr auto compare_weak_order_fallback = __compare_weak_order_fallback::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_COMPARE_WEAK_ORDER_FALLBACK diff --git a/lib/libcxx/include/__compare/is_eq.h b/lib/libcxx/include/__compare/is_eq.h new file mode 100644 index 0000000..9a82df1 --- /dev/null +++ b/lib/libcxx/include/__compare/is_eq.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_IS_EQ_H +#define _LIBCPP___COMPARE_IS_EQ_H + +#include <__compare/ordering.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_eq(partial_ordering __c) noexcept { return __c == 0; } +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_neq(partial_ordering __c) noexcept { return __c != 0; } +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_lt(partial_ordering __c) noexcept { return __c < 0; } +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_lteq(partial_ordering __c) noexcept { return __c <= 0; } +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_gt(partial_ordering __c) noexcept { return __c > 0; } +_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_gteq(partial_ordering __c) noexcept { return __c >= 0; } + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_IS_EQ_H diff --git a/lib/libcxx/include/__compare/ordering.h b/lib/libcxx/include/__compare/ordering.h new file mode 100644 index 0000000..c348f04 --- /dev/null +++ b/lib/libcxx/include/__compare/ordering.h @@ -0,0 +1,326 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_ORDERING_H +#define _LIBCPP___COMPARE_ORDERING_H + +#include <__config> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_same.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// exposition only +enum class _LIBCPP_ENUM_VIS _OrdResult : signed char { + __less = -1, + __equiv = 0, + __greater = 1 +}; + +enum class _LIBCPP_ENUM_VIS _NCmpResult : signed char { + __unordered = -127 +}; + +class partial_ordering; +class weak_ordering; +class strong_ordering; + +template +inline constexpr bool __one_of_v = (is_same_v<_Tp, _Args> || ...); + +struct _CmpUnspecifiedParam { + _LIBCPP_HIDE_FROM_ABI constexpr + _CmpUnspecifiedParam(int _CmpUnspecifiedParam::*) noexcept {} + + template>> + _CmpUnspecifiedParam(_Tp) = delete; +}; + +class partial_ordering { + using _ValueT = signed char; + + _LIBCPP_HIDE_FROM_ABI + explicit constexpr partial_ordering(_OrdResult __v) noexcept + : __value_(_ValueT(__v)) {} + + _LIBCPP_HIDE_FROM_ABI + explicit constexpr partial_ordering(_NCmpResult __v) noexcept + : __value_(_ValueT(__v)) {} + + _LIBCPP_HIDE_FROM_ABI + constexpr bool __is_ordered() const noexcept { + return __value_ != _ValueT(_NCmpResult::__unordered); + } +public: + // valid values + static const partial_ordering less; + static const partial_ordering equivalent; + static const partial_ordering greater; + static const partial_ordering unordered; + + // comparisons + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(partial_ordering, partial_ordering) noexcept = default; + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__is_ordered() && __v.__value_ == 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__is_ordered() && __v.__value_ < 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__is_ordered() && __v.__value_ <= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__is_ordered() && __v.__value_ > 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__is_ordered() && __v.__value_ >= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (_CmpUnspecifiedParam, partial_ordering __v) noexcept { + return __v.__is_ordered() && 0 < __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(_CmpUnspecifiedParam, partial_ordering __v) noexcept { + return __v.__is_ordered() && 0 <= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (_CmpUnspecifiedParam, partial_ordering __v) noexcept { + return __v.__is_ordered() && 0 > __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(_CmpUnspecifiedParam, partial_ordering __v) noexcept { + return __v.__is_ordered() && 0 >= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr partial_ordering operator<=>(partial_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr partial_ordering operator<=>(_CmpUnspecifiedParam, partial_ordering __v) noexcept { + return __v < 0 ? partial_ordering::greater : (__v > 0 ? partial_ordering::less : __v); + } +private: + _ValueT __value_; +}; + +inline constexpr partial_ordering partial_ordering::less(_OrdResult::__less); +inline constexpr partial_ordering partial_ordering::equivalent(_OrdResult::__equiv); +inline constexpr partial_ordering partial_ordering::greater(_OrdResult::__greater); +inline constexpr partial_ordering partial_ordering::unordered(_NCmpResult ::__unordered); + +class weak_ordering { + using _ValueT = signed char; + + _LIBCPP_HIDE_FROM_ABI + explicit constexpr weak_ordering(_OrdResult __v) noexcept : __value_(_ValueT(__v)) {} + +public: + static const weak_ordering less; + static const weak_ordering equivalent; + static const weak_ordering greater; + + _LIBCPP_HIDE_FROM_ABI + constexpr operator partial_ordering() const noexcept { + return __value_ == 0 ? partial_ordering::equivalent + : (__value_ < 0 ? partial_ordering::less : partial_ordering::greater); + } + + // comparisons + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(weak_ordering, weak_ordering) noexcept = default; + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ == 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ < 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ <= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ > 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ >= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (_CmpUnspecifiedParam, weak_ordering __v) noexcept { + return 0 < __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(_CmpUnspecifiedParam, weak_ordering __v) noexcept { + return 0 <= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (_CmpUnspecifiedParam, weak_ordering __v) noexcept { + return 0 > __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(_CmpUnspecifiedParam, weak_ordering __v) noexcept { + return 0 >= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr weak_ordering operator<=>(weak_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr weak_ordering operator<=>(_CmpUnspecifiedParam, weak_ordering __v) noexcept { + return __v < 0 ? weak_ordering::greater : (__v > 0 ? weak_ordering::less : __v); + } + +private: + _ValueT __value_; +}; + +inline constexpr weak_ordering weak_ordering::less(_OrdResult::__less); +inline constexpr weak_ordering weak_ordering::equivalent(_OrdResult::__equiv); +inline constexpr weak_ordering weak_ordering::greater(_OrdResult::__greater); + +class strong_ordering { + using _ValueT = signed char; + + _LIBCPP_HIDE_FROM_ABI + explicit constexpr strong_ordering(_OrdResult __v) noexcept : __value_(_ValueT(__v)) {} + +public: + static const strong_ordering less; + static const strong_ordering equal; + static const strong_ordering equivalent; + static const strong_ordering greater; + + // conversions + _LIBCPP_HIDE_FROM_ABI + constexpr operator partial_ordering() const noexcept { + return __value_ == 0 ? partial_ordering::equivalent + : (__value_ < 0 ? partial_ordering::less : partial_ordering::greater); + } + + _LIBCPP_HIDE_FROM_ABI + constexpr operator weak_ordering() const noexcept { + return __value_ == 0 ? weak_ordering::equivalent + : (__value_ < 0 ? weak_ordering::less : weak_ordering::greater); + } + + // comparisons + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(strong_ordering, strong_ordering) noexcept = default; + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ == 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ < 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ <= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ > 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v.__value_ >= 0; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator< (_CmpUnspecifiedParam, strong_ordering __v) noexcept { + return 0 < __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator<=(_CmpUnspecifiedParam, strong_ordering __v) noexcept { + return 0 <= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator> (_CmpUnspecifiedParam, strong_ordering __v) noexcept { + return 0 > __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator>=(_CmpUnspecifiedParam, strong_ordering __v) noexcept { + return 0 >= __v.__value_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr strong_ordering operator<=>(strong_ordering __v, _CmpUnspecifiedParam) noexcept { + return __v; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr strong_ordering operator<=>(_CmpUnspecifiedParam, strong_ordering __v) noexcept { + return __v < 0 ? strong_ordering::greater : (__v > 0 ? strong_ordering::less : __v); + } + +private: + _ValueT __value_; +}; + +inline constexpr strong_ordering strong_ordering::less(_OrdResult::__less); +inline constexpr strong_ordering strong_ordering::equal(_OrdResult::__equiv); +inline constexpr strong_ordering strong_ordering::equivalent(_OrdResult::__equiv); +inline constexpr strong_ordering strong_ordering::greater(_OrdResult::__greater); + +/// [cmp.categories.pre]/1 +/// The types partial_ordering, weak_ordering, and strong_ordering are +/// collectively termed the comparison category types. +template +concept __comparison_category = __one_of_v<_Tp, partial_ordering, weak_ordering, strong_ordering>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_ORDERING_H diff --git a/lib/libcxx/include/__compare/partial_order.h b/lib/libcxx/include/__compare/partial_order.h new file mode 100644 index 0000000..9cb76cc --- /dev/null +++ b/lib/libcxx/include/__compare/partial_order.h @@ -0,0 +1,74 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_PARTIAL_ORDER +#define _LIBCPP___COMPARE_PARTIAL_ORDER + +#include <__compare/compare_three_way.h> +#include <__compare/ordering.h> +#include <__compare/weak_order.h> +#include <__config> +#include <__type_traits/decay.h> +#include <__type_traits/is_same.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __partial_order { + struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) partial_order should use ADL, but only here + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<2>) + noexcept(noexcept(partial_ordering(partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( partial_ordering(partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return partial_ordering(partial_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + // NOLINTEND(libcpp-robust-against-adl) + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) + noexcept(noexcept(partial_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( partial_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return partial_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(partial_ordering(_VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( partial_ordering(_VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return partial_ordering(_VSTD::weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>()); } + }; +} // namespace __partial_order + +inline namespace __cpo { + inline constexpr auto partial_order = __partial_order::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_PARTIAL_ORDER diff --git a/lib/libcxx/include/__compare/strong_order.h b/lib/libcxx/include/__compare/strong_order.h new file mode 100644 index 0000000..b6e0cfa --- /dev/null +++ b/lib/libcxx/include/__compare/strong_order.h @@ -0,0 +1,139 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_STRONG_ORDER +#define _LIBCPP___COMPARE_STRONG_ORDER + +#include <__bit/bit_cast.h> +#include <__compare/compare_three_way.h> +#include <__compare/ordering.h> +#include <__config> +#include <__type_traits/conditional.h> +#include <__type_traits/decay.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> +#include +#include +#include + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __strong_order { + struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) strong_order should use ADL, but only here + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<2>) + noexcept(noexcept(strong_ordering(strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( strong_ordering(strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return strong_ordering(strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + // NOLINTEND(libcpp-robust-against-adl) + + template> + requires is_same_v<_Dp, decay_t<_Up>> && is_floating_point_v<_Dp> + _LIBCPP_HIDE_FROM_ABI static constexpr strong_ordering + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) noexcept + { + if constexpr (numeric_limits<_Dp>::is_iec559 && sizeof(_Dp) == sizeof(int32_t)) { + int32_t __rx = _VSTD::bit_cast(__t); + int32_t __ry = _VSTD::bit_cast(__u); + __rx = (__rx < 0) ? (numeric_limits::min() - __rx - 1) : __rx; + __ry = (__ry < 0) ? (numeric_limits::min() - __ry - 1) : __ry; + return (__rx <=> __ry); + } else if constexpr (numeric_limits<_Dp>::is_iec559 && sizeof(_Dp) == sizeof(int64_t)) { + int64_t __rx = _VSTD::bit_cast(__t); + int64_t __ry = _VSTD::bit_cast(__u); + __rx = (__rx < 0) ? (numeric_limits::min() - __rx - 1) : __rx; + __ry = (__ry < 0) ? (numeric_limits::min() - __ry - 1) : __ry; + return (__rx <=> __ry); + } else if (__t < __u) { + return strong_ordering::less; + } else if (__t > __u) { + return strong_ordering::greater; + } else if (__t == __u) { + if constexpr (numeric_limits<_Dp>::radix == 2) { + return _VSTD::signbit(__u) <=> _VSTD::signbit(__t); + } else { + // This is bullet 3 of the IEEE754 algorithm, relevant + // only for decimal floating-point; + // see https://stackoverflow.com/questions/69068075/ + if (__t == 0 || _VSTD::isinf(__t)) { + return _VSTD::signbit(__u) <=> _VSTD::signbit(__t); + } else { + int __texp, __uexp; + (void)_VSTD::frexp(__t, &__texp); + (void)_VSTD::frexp(__u, &__uexp); + return (__t < 0) ? (__texp <=> __uexp) : (__uexp <=> __texp); + } + } + } else { + // They're unordered, so one of them must be a NAN. + // The order is -QNAN, -SNAN, numbers, +SNAN, +QNAN. + bool __t_is_nan = _VSTD::isnan(__t); + bool __u_is_nan = _VSTD::isnan(__u); + bool __t_is_negative = _VSTD::signbit(__t); + bool __u_is_negative = _VSTD::signbit(__u); + using _IntType = conditional_t< + sizeof(__t) == sizeof(int32_t), int32_t, conditional_t< + sizeof(__t) == sizeof(int64_t), int64_t, void> + >; + if constexpr (is_same_v<_IntType, void>) { + static_assert(sizeof(_Dp) == 0, "std::strong_order is unimplemented for this floating-point type"); + } else if (__t_is_nan && __u_is_nan) { + // Order by sign bit, then by "payload bits" (we'll just use bit_cast). + if (__t_is_negative != __u_is_negative) { + return (__u_is_negative <=> __t_is_negative); + } else { + return _VSTD::bit_cast<_IntType>(__t) <=> _VSTD::bit_cast<_IntType>(__u); + } + } else if (__t_is_nan) { + return __t_is_negative ? strong_ordering::less : strong_ordering::greater; + } else { + return __u_is_negative ? strong_ordering::greater : strong_ordering::less; + } + } + } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(strong_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( strong_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return strong_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<2>()); } + }; +} // namespace __strong_order + +inline namespace __cpo { + inline constexpr auto strong_order = __strong_order::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___COMPARE_STRONG_ORDER diff --git a/lib/libcxx/include/__compare/synth_three_way.h b/lib/libcxx/include/__compare/synth_three_way.h new file mode 100644 index 0000000..6420d13 --- /dev/null +++ b/lib/libcxx/include/__compare/synth_three_way.h @@ -0,0 +1,57 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_SYNTH_THREE_WAY_H +#define _LIBCPP___COMPARE_SYNTH_THREE_WAY_H + +#include <__compare/ordering.h> +#include <__compare/three_way_comparable.h> +#include <__concepts/boolean_testable.h> +#include <__config> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [expos.only.func] + +// TODO MODULES restore the lamba to match the Standard. +// See https://github.com/llvm/llvm-project/issues/57222 +//_LIBCPP_HIDE_FROM_ABI inline constexpr auto __synth_three_way = +// [](const _Tp& __t, const _Up& __u) +template +_LIBCPP_HIDE_FROM_ABI constexpr auto __synth_three_way(const _Tp& __t, const _Up& __u) + requires requires { + { __t < __u } -> __boolean_testable; + { __u < __t } -> __boolean_testable; + } +{ + if constexpr (three_way_comparable_with<_Tp, _Up>) { + return __t <=> __u; + } else { + if (__t < __u) + return weak_ordering::less; + if (__u < __t) + return weak_ordering::greater; + return weak_ordering::equivalent; + } +} + +template +using __synth_three_way_result = decltype(std::__synth_three_way(std::declval<_Tp&>(), std::declval<_Up&>())); + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_SYNTH_THREE_WAY_H diff --git a/lib/libcxx/include/__compare/three_way_comparable.h b/lib/libcxx/include/__compare/three_way_comparable.h new file mode 100644 index 0000000..2b77bc3 --- /dev/null +++ b/lib/libcxx/include/__compare/three_way_comparable.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_THREE_WAY_COMPARABLE_H +#define _LIBCPP___COMPARE_THREE_WAY_COMPARABLE_H + +#include <__compare/common_comparison_category.h> +#include <__compare/ordering.h> +#include <__concepts/common_reference_with.h> +#include <__concepts/equality_comparable.h> +#include <__concepts/same_as.h> +#include <__concepts/totally_ordered.h> +#include <__config> +#include <__type_traits/common_reference.h> +#include <__type_traits/make_const_lvalue_ref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept __compares_as = + same_as, _Cat>; + +template +concept three_way_comparable = + __weakly_equality_comparable_with<_Tp, _Tp> && + __partially_ordered_with<_Tp, _Tp> && + requires(__make_const_lvalue_ref<_Tp> __a, __make_const_lvalue_ref<_Tp> __b) { + { __a <=> __b } -> __compares_as<_Cat>; + }; + +template +concept three_way_comparable_with = + three_way_comparable<_Tp, _Cat> && + three_way_comparable<_Up, _Cat> && + common_reference_with<__make_const_lvalue_ref<_Tp>, __make_const_lvalue_ref<_Up>> && + three_way_comparable, __make_const_lvalue_ref<_Up>>, _Cat> && + __weakly_equality_comparable_with<_Tp, _Up> && + __partially_ordered_with<_Tp, _Up> && + requires(__make_const_lvalue_ref<_Tp> __t, __make_const_lvalue_ref<_Up> __u) { + { __t <=> __u } -> __compares_as<_Cat>; + { __u <=> __t } -> __compares_as<_Cat>; + }; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_THREE_WAY_COMPARABLE_H diff --git a/lib/libcxx/include/__compare/weak_order.h b/lib/libcxx/include/__compare/weak_order.h new file mode 100644 index 0000000..9cbc1d2 --- /dev/null +++ b/lib/libcxx/include/__compare/weak_order.h @@ -0,0 +1,102 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COMPARE_WEAK_ORDER +#define _LIBCPP___COMPARE_WEAK_ORDER + +#include <__compare/compare_three_way.h> +#include <__compare/ordering.h> +#include <__compare/strong_order.h> +#include <__config> +#include <__type_traits/decay.h> +#include <__utility/forward.h> +#include <__utility/priority_tag.h> +#include + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [cmp.alg] +namespace __weak_order { + struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) weak_order should use ADL, but only here + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<3>) + noexcept(noexcept(weak_ordering(weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( weak_ordering(weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return weak_ordering(weak_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + // NOLINTEND(libcpp-robust-against-adl) + + template> + requires is_same_v<_Dp, decay_t<_Up>> && is_floating_point_v<_Dp> + _LIBCPP_HIDE_FROM_ABI static constexpr weak_ordering + __go(_Tp&& __t, _Up&& __u, __priority_tag<2>) noexcept + { + partial_ordering __po = (__t <=> __u); + if (__po == partial_ordering::less) { + return weak_ordering::less; + } else if (__po == partial_ordering::equivalent) { + return weak_ordering::equivalent; + } else if (__po == partial_ordering::greater) { + return weak_ordering::greater; + } else { + // Otherwise, at least one of them is a NaN. + bool __t_is_nan = _VSTD::isnan(__t); + bool __u_is_nan = _VSTD::isnan(__u); + bool __t_is_negative = _VSTD::signbit(__t); + bool __u_is_negative = _VSTD::signbit(__u); + if (__t_is_nan && __u_is_nan) { + return (__u_is_negative <=> __t_is_negative); + } else if (__t_is_nan) { + return __t_is_negative ? weak_ordering::less : weak_ordering::greater; + } else { + return __u_is_negative ? weak_ordering::greater : weak_ordering::less; + } + } + } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<1>) + noexcept(noexcept(weak_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( weak_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return weak_ordering(compare_three_way()(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + + template + requires is_same_v, decay_t<_Up>> + _LIBCPP_HIDE_FROM_ABI static constexpr auto + __go(_Tp&& __t, _Up&& __u, __priority_tag<0>) + noexcept(noexcept(weak_ordering(_VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))))) + -> decltype( weak_ordering(_VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) + { return weak_ordering(_VSTD::strong_order(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u))); } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(__go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<3>()))) + -> decltype( __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<3>())) + { return __go(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u), __priority_tag<3>()); } + }; +} // namespace __weak_order + +inline namespace __cpo { + inline constexpr auto weak_order = __weak_order::__fn{}; +} // namespace __cpo + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___COMPARE_WEAK_ORDER diff --git a/lib/libcxx/include/__concepts/arithmetic.h b/lib/libcxx/include/__concepts/arithmetic.h new file mode 100644 index 0000000..f41e4c9 --- /dev/null +++ b/lib/libcxx/include/__concepts/arithmetic.h @@ -0,0 +1,52 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_ARITHMETIC_H +#define _LIBCPP___CONCEPTS_ARITHMETIC_H + +#include <__config> +#include <__type_traits/is_floating_point.h> +#include <__type_traits/is_integral.h> +#include <__type_traits/is_signed.h> +#include <__type_traits/is_signed_integer.h> +#include <__type_traits/is_unsigned_integer.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concepts.arithmetic], arithmetic concepts + +template +concept integral = is_integral_v<_Tp>; + +template +concept signed_integral = integral<_Tp> && is_signed_v<_Tp>; + +template +concept unsigned_integral = integral<_Tp> && !signed_integral<_Tp>; + +template +concept floating_point = is_floating_point_v<_Tp>; + +// Concept helpers for the internal type traits for the fundamental types. + +template +concept __libcpp_unsigned_integer = __libcpp_is_unsigned_integer<_Tp>::value; +template +concept __libcpp_signed_integer = __libcpp_is_signed_integer<_Tp>::value; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_ARITHMETIC_H diff --git a/lib/libcxx/include/__concepts/assignable.h b/lib/libcxx/include/__concepts/assignable.h new file mode 100644 index 0000000..3f7544c --- /dev/null +++ b/lib/libcxx/include/__concepts/assignable.h @@ -0,0 +1,41 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_ASSIGNABLE_H +#define _LIBCPP___CONCEPTS_ASSIGNABLE_H + +#include <__concepts/common_reference_with.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__type_traits/is_reference.h> +#include <__type_traits/make_const_lvalue_ref.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.assignable] + +template +concept assignable_from = + is_lvalue_reference_v<_Lhs> && + common_reference_with<__make_const_lvalue_ref<_Lhs>, __make_const_lvalue_ref<_Rhs>> && + requires(_Lhs __lhs, _Rhs&& __rhs) { + { __lhs = _VSTD::forward<_Rhs>(__rhs) } -> same_as<_Lhs>; + }; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_ASSIGNABLE_H diff --git a/lib/libcxx/include/__concepts/boolean_testable.h b/lib/libcxx/include/__concepts/boolean_testable.h new file mode 100644 index 0000000..d290e1c --- /dev/null +++ b/lib/libcxx/include/__concepts/boolean_testable.h @@ -0,0 +1,38 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_BOOLEAN_TESTABLE_H +#define _LIBCPP___CONCEPTS_BOOLEAN_TESTABLE_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concepts.booleantestable] + +template +concept __boolean_testable_impl = convertible_to<_Tp, bool>; + +template +concept __boolean_testable = __boolean_testable_impl<_Tp> && requires(_Tp&& __t) { + { !_VSTD::forward<_Tp>(__t) } -> __boolean_testable_impl; +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_BOOLEAN_TESTABLE_H diff --git a/lib/libcxx/include/__concepts/class_or_enum.h b/lib/libcxx/include/__concepts/class_or_enum.h new file mode 100644 index 0000000..c1b4a8c --- /dev/null +++ b/lib/libcxx/include/__concepts/class_or_enum.h @@ -0,0 +1,40 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_CLASS_OR_ENUM_H +#define _LIBCPP___CONCEPTS_CLASS_OR_ENUM_H + +#include <__config> +#include <__type_traits/is_class.h> +#include <__type_traits/is_enum.h> +#include <__type_traits/is_union.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// Whether a type is a class type or enumeration type according to the Core wording. + +template +concept __class_or_enum = is_class_v<_Tp> || is_union_v<_Tp> || is_enum_v<_Tp>; + +// Work around Clang bug https://llvm.org/PR52970 +// TODO: remove this workaround once libc++ no longer has to support Clang 13 (it was fixed in Clang 14). +template +concept __workaround_52970 = is_class_v<__remove_cvref_t<_Tp>> || is_union_v<__remove_cvref_t<_Tp>>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_CLASS_OR_ENUM_H diff --git a/lib/libcxx/include/__concepts/common_reference_with.h b/lib/libcxx/include/__concepts/common_reference_with.h new file mode 100644 index 0000000..4eb687e --- /dev/null +++ b/lib/libcxx/include/__concepts/common_reference_with.h @@ -0,0 +1,36 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_COMMON_REFERENCE_WITH_H +#define _LIBCPP___CONCEPTS_COMMON_REFERENCE_WITH_H + +#include <__concepts/convertible_to.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__type_traits/common_reference.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.commonref] + +template +concept common_reference_with = + same_as, common_reference_t<_Up, _Tp>> && + convertible_to<_Tp, common_reference_t<_Tp, _Up>> && convertible_to<_Up, common_reference_t<_Tp, _Up>>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_COMMON_REFERENCE_WITH_H diff --git a/lib/libcxx/include/__concepts/common_with.h b/lib/libcxx/include/__concepts/common_with.h new file mode 100644 index 0000000..85abb05 --- /dev/null +++ b/lib/libcxx/include/__concepts/common_with.h @@ -0,0 +1,52 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_COMMON_WITH_H +#define _LIBCPP___CONCEPTS_COMMON_WITH_H + +#include <__concepts/common_reference_with.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__type_traits/add_lvalue_reference.h> +#include <__type_traits/common_reference.h> +#include <__type_traits/common_type.h> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.common] + +// clang-format off +template +concept common_with = + same_as, common_type_t<_Up, _Tp>> && + requires { + static_cast>(std::declval<_Tp>()); + static_cast>(std::declval<_Up>()); + } && + common_reference_with< + add_lvalue_reference_t, + add_lvalue_reference_t> && + common_reference_with< + add_lvalue_reference_t>, + common_reference_t< + add_lvalue_reference_t, + add_lvalue_reference_t>>; +// clang-format on + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_COMMON_WITH_H diff --git a/lib/libcxx/include/__concepts/constructible.h b/lib/libcxx/include/__concepts/constructible.h new file mode 100644 index 0000000..835a444 --- /dev/null +++ b/lib/libcxx/include/__concepts/constructible.h @@ -0,0 +1,55 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H +#define _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H + +#include <__concepts/convertible_to.h> +#include <__concepts/destructible.h> +#include <__config> +#include <__type_traits/is_constructible.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.constructible] +template +concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>; + +// [concept.default.init] + +template +concept __default_initializable = requires { ::new _Tp; }; + +template +concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>; + +// [concept.moveconstructible] +template +concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>; + +// [concept.copyconstructible] +// clang-format off +template +concept copy_constructible = + move_constructible<_Tp> && + constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp> && + constructible_from<_Tp, const _Tp&> && convertible_to && + constructible_from<_Tp, const _Tp> && convertible_to; +// clang-format on + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H diff --git a/lib/libcxx/include/__concepts/convertible_to.h b/lib/libcxx/include/__concepts/convertible_to.h new file mode 100644 index 0000000..6d5b6c1 --- /dev/null +++ b/lib/libcxx/include/__concepts/convertible_to.h @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_CONVERTIBLE_TO_H +#define _LIBCPP___CONCEPTS_CONVERTIBLE_TO_H + +#include <__config> +#include <__type_traits/is_convertible.h> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.convertible] + +template +concept convertible_to = is_convertible_v<_From, _To> && requires { static_cast<_To>(std::declval<_From>()); }; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_CONVERTIBLE_TO_H diff --git a/lib/libcxx/include/__concepts/copyable.h b/lib/libcxx/include/__concepts/copyable.h new file mode 100644 index 0000000..2bf0ad4 --- /dev/null +++ b/lib/libcxx/include/__concepts/copyable.h @@ -0,0 +1,41 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_COPYABLE_H +#define _LIBCPP___CONCEPTS_COPYABLE_H + +#include <__concepts/assignable.h> +#include <__concepts/constructible.h> +#include <__concepts/movable.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concepts.object] + +// clang-format off +template +concept copyable = + copy_constructible<_Tp> && + movable<_Tp> && + assignable_from<_Tp&, _Tp&> && + assignable_from<_Tp&, const _Tp&> && + assignable_from<_Tp&, const _Tp>; +// clang-format on + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_COPYABLE_H diff --git a/lib/libcxx/include/__concepts/derived_from.h b/lib/libcxx/include/__concepts/derived_from.h new file mode 100644 index 0000000..9875fae --- /dev/null +++ b/lib/libcxx/include/__concepts/derived_from.h @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_DERIVED_FROM_H +#define _LIBCPP___CONCEPTS_DERIVED_FROM_H + +#include <__config> +#include <__type_traits/is_base_of.h> +#include <__type_traits/is_convertible.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.derived] + +template +concept derived_from = is_base_of_v<_Bp, _Dp> && is_convertible_v; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_DERIVED_FROM_H diff --git a/lib/libcxx/include/__concepts/destructible.h b/lib/libcxx/include/__concepts/destructible.h new file mode 100644 index 0000000..28b4b1b --- /dev/null +++ b/lib/libcxx/include/__concepts/destructible.h @@ -0,0 +1,32 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_DESTRUCTIBLE_H +#define _LIBCPP___CONCEPTS_DESTRUCTIBLE_H + +#include <__config> +#include <__type_traits/is_nothrow_destructible.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.destructible] + +template +concept destructible = is_nothrow_destructible_v<_Tp>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_DESTRUCTIBLE_H diff --git a/lib/libcxx/include/__concepts/different_from.h b/lib/libcxx/include/__concepts/different_from.h new file mode 100644 index 0000000..fd31f6e --- /dev/null +++ b/lib/libcxx/include/__concepts/different_from.h @@ -0,0 +1,31 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_DIFFERENT_FROM_H +#define _LIBCPP___CONCEPTS_DIFFERENT_FROM_H + +#include <__concepts/same_as.h> +#include <__config> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept __different_from = !same_as, remove_cvref_t<_Up>>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_DIFFERENT_FROM_H diff --git a/lib/libcxx/include/__concepts/equality_comparable.h b/lib/libcxx/include/__concepts/equality_comparable.h new file mode 100644 index 0000000..278fc76 --- /dev/null +++ b/lib/libcxx/include/__concepts/equality_comparable.h @@ -0,0 +1,56 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_EQUALITY_COMPARABLE_H +#define _LIBCPP___CONCEPTS_EQUALITY_COMPARABLE_H + +#include <__concepts/boolean_testable.h> +#include <__concepts/common_reference_with.h> +#include <__config> +#include <__type_traits/common_reference.h> +#include <__type_traits/make_const_lvalue_ref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.equalitycomparable] + +template +concept __weakly_equality_comparable_with = + requires(__make_const_lvalue_ref<_Tp> __t, __make_const_lvalue_ref<_Up> __u) { + { __t == __u } -> __boolean_testable; + { __t != __u } -> __boolean_testable; + { __u == __t } -> __boolean_testable; + { __u != __t } -> __boolean_testable; + }; + +template +concept equality_comparable = __weakly_equality_comparable_with<_Tp, _Tp>; + +// clang-format off +template +concept equality_comparable_with = + equality_comparable<_Tp> && equality_comparable<_Up> && + common_reference_with<__make_const_lvalue_ref<_Tp>, __make_const_lvalue_ref<_Up>> && + equality_comparable< + common_reference_t< + __make_const_lvalue_ref<_Tp>, + __make_const_lvalue_ref<_Up>>> && + __weakly_equality_comparable_with<_Tp, _Up>; +// clang-format on + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_EQUALITY_COMPARABLE_H diff --git a/lib/libcxx/include/__concepts/invocable.h b/lib/libcxx/include/__concepts/invocable.h new file mode 100644 index 0000000..e5be514 --- /dev/null +++ b/lib/libcxx/include/__concepts/invocable.h @@ -0,0 +1,40 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_INVOCABLE_H +#define _LIBCPP___CONCEPTS_INVOCABLE_H + +#include <__config> +#include <__functional/invoke.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.invocable] + +template +concept invocable = requires(_Fn&& __fn, _Args&&... __args) { + _VSTD::invoke(_VSTD::forward<_Fn>(__fn), _VSTD::forward<_Args>(__args)...); // not required to be equality preserving +}; + +// [concept.regular.invocable] + +template +concept regular_invocable = invocable<_Fn, _Args...>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_INVOCABLE_H diff --git a/lib/libcxx/include/__concepts/movable.h b/lib/libcxx/include/__concepts/movable.h new file mode 100644 index 0000000..bc5b9d7 --- /dev/null +++ b/lib/libcxx/include/__concepts/movable.h @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_MOVABLE_H +#define _LIBCPP___CONCEPTS_MOVABLE_H + +#include <__concepts/assignable.h> +#include <__concepts/constructible.h> +#include <__concepts/swappable.h> +#include <__config> +#include <__type_traits/is_object.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concepts.object] + +template +concept movable = is_object_v<_Tp> && move_constructible<_Tp> && assignable_from<_Tp&, _Tp> && swappable<_Tp>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_MOVABLE_H diff --git a/lib/libcxx/include/__concepts/predicate.h b/lib/libcxx/include/__concepts/predicate.h new file mode 100644 index 0000000..00731ef --- /dev/null +++ b/lib/libcxx/include/__concepts/predicate.h @@ -0,0 +1,34 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_PREDICATE_H +#define _LIBCPP___CONCEPTS_PREDICATE_H + +#include <__concepts/boolean_testable.h> +#include <__concepts/invocable.h> +#include <__config> +#include <__functional/invoke.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.predicate] + +template +concept predicate = regular_invocable<_Fn, _Args...> && __boolean_testable>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_PREDICATE_H diff --git a/lib/libcxx/include/__concepts/regular.h b/lib/libcxx/include/__concepts/regular.h new file mode 100644 index 0000000..9f3d8bf --- /dev/null +++ b/lib/libcxx/include/__concepts/regular.h @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_REGULAR_H +#define _LIBCPP___CONCEPTS_REGULAR_H + +#include <__concepts/equality_comparable.h> +#include <__concepts/semiregular.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.object] + +template +concept regular = semiregular<_Tp> && equality_comparable<_Tp>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_REGULAR_H diff --git a/lib/libcxx/include/__concepts/relation.h b/lib/libcxx/include/__concepts/relation.h new file mode 100644 index 0000000..7545a7d --- /dev/null +++ b/lib/libcxx/include/__concepts/relation.h @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_RELATION_H +#define _LIBCPP___CONCEPTS_RELATION_H + +#include <__concepts/predicate.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.relation] + +template +concept relation = + predicate<_Rp, _Tp, _Tp> && predicate<_Rp, _Up, _Up> && predicate<_Rp, _Tp, _Up> && predicate<_Rp, _Up, _Tp>; + +// [concept.equiv] + +template +concept equivalence_relation = relation<_Rp, _Tp, _Up>; + +// [concept.strictweakorder] + +template +concept strict_weak_order = relation<_Rp, _Tp, _Up>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_RELATION_H diff --git a/lib/libcxx/include/__concepts/same_as.h b/lib/libcxx/include/__concepts/same_as.h new file mode 100644 index 0000000..4241131 --- /dev/null +++ b/lib/libcxx/include/__concepts/same_as.h @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_SAME_AS_H +#define _LIBCPP___CONCEPTS_SAME_AS_H + +#include <__config> +#include <__type_traits/is_same.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.same] + +template +concept __same_as_impl = _IsSame<_Tp, _Up>::value; + +template +concept same_as = __same_as_impl<_Tp, _Up> && __same_as_impl<_Up, _Tp>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_SAME_AS_H diff --git a/lib/libcxx/include/__concepts/semiregular.h b/lib/libcxx/include/__concepts/semiregular.h new file mode 100644 index 0000000..7a159d1 --- /dev/null +++ b/lib/libcxx/include/__concepts/semiregular.h @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_SEMIREGULAR_H +#define _LIBCPP___CONCEPTS_SEMIREGULAR_H + +#include <__concepts/constructible.h> +#include <__concepts/copyable.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.object] + +template +concept semiregular = copyable<_Tp> && default_initializable<_Tp>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_SEMIREGULAR_H diff --git a/lib/libcxx/include/__concepts/swappable.h b/lib/libcxx/include/__concepts/swappable.h new file mode 100644 index 0000000..c1969de --- /dev/null +++ b/lib/libcxx/include/__concepts/swappable.h @@ -0,0 +1,123 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_SWAPPABLE_H +#define _LIBCPP___CONCEPTS_SWAPPABLE_H + +#include <__concepts/assignable.h> +#include <__concepts/class_or_enum.h> +#include <__concepts/common_reference_with.h> +#include <__concepts/constructible.h> +#include <__config> +#include <__type_traits/extent.h> +#include <__type_traits/is_nothrow_move_assignable.h> +#include <__type_traits/is_nothrow_move_constructible.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/exchange.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/swap.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.swappable] + +namespace ranges { +namespace __swap { + +template +void swap(_Tp&, _Tp&) = delete; + +// clang-format off +template +concept __unqualified_swappable_with = + (__class_or_enum> || __class_or_enum>) && + requires(_Tp&& __t, _Up&& __u) { + swap(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); + }; +// clang-format on + +struct __fn; + +// clang-format off +template +concept __swappable_arrays = + !__unqualified_swappable_with<_Tp (&)[_Size], _Up (&)[_Size]> && + extent_v<_Tp> == extent_v<_Up> && + requires(_Tp (&__t)[_Size], _Up (&__u)[_Size], const __fn& __swap) { + __swap(__t[0], __u[0]); + }; +// clang-format on + +template +concept __exchangeable = + !__unqualified_swappable_with<_Tp&, _Tp&> && move_constructible<_Tp> && assignable_from<_Tp&, _Tp>; + +struct __fn { + // 2.1 `S` is `(void)swap(E1, E2)`* if `E1` or `E2` has class or enumeration type and... + // *The name `swap` is used here unqualified. + template + requires __unqualified_swappable_with<_Tp, _Up> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_Tp&& __t, _Up&& __u) const + noexcept(noexcept(swap(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)))) { + swap(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); + } + + // 2.2 Otherwise, if `E1` and `E2` are lvalues of array types with equal extent and... + template + requires __swappable_arrays<_Tp, _Up, _Size> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_Tp (&__t)[_Size], _Up (&__u)[_Size]) const + noexcept(noexcept((*this)(*__t, *__u))) { + // TODO(cjdb): replace with `ranges::swap_ranges`. + for (size_t __i = 0; __i < _Size; ++__i) { + (*this)(__t[__i], __u[__i]); + } + } + + // 2.3 Otherwise, if `E1` and `E2` are lvalues of the same type `T` that models... + template <__exchangeable _Tp> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_Tp& __x, _Tp& __y) const + noexcept(is_nothrow_move_constructible_v<_Tp>&& is_nothrow_move_assignable_v<_Tp>) { + __y = _VSTD::exchange(__x, _VSTD::move(__y)); + } +}; +} // namespace __swap + +inline namespace __cpo { +inline constexpr auto swap = __swap::__fn{}; +} // namespace __cpo +} // namespace ranges + +template +concept swappable = requires(_Tp& __a, _Tp& __b) { ranges::swap(__a, __b); }; + +template +concept swappable_with = common_reference_with<_Tp, _Up> && requires(_Tp&& __t, _Up&& __u) { + ranges::swap(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Tp>(__t)); + ranges::swap(_VSTD::forward<_Up>(__u), _VSTD::forward<_Up>(__u)); + ranges::swap(_VSTD::forward<_Tp>(__t), _VSTD::forward<_Up>(__u)); + ranges::swap(_VSTD::forward<_Up>(__u), _VSTD::forward<_Tp>(__t)); +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CONCEPTS_SWAPPABLE_H diff --git a/lib/libcxx/include/__concepts/totally_ordered.h b/lib/libcxx/include/__concepts/totally_ordered.h new file mode 100644 index 0000000..186c3b4 --- /dev/null +++ b/lib/libcxx/include/__concepts/totally_ordered.h @@ -0,0 +1,59 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONCEPTS_TOTALLY_ORDERED_H +#define _LIBCPP___CONCEPTS_TOTALLY_ORDERED_H + +#include <__concepts/boolean_testable.h> +#include <__concepts/equality_comparable.h> +#include <__config> +#include <__type_traits/common_reference.h> +#include <__type_traits/make_const_lvalue_ref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [concept.totallyordered] + +template +concept __partially_ordered_with = requires(__make_const_lvalue_ref<_Tp> __t, __make_const_lvalue_ref<_Up> __u) { + { __t < __u } -> __boolean_testable; + { __t > __u } -> __boolean_testable; + { __t <= __u } -> __boolean_testable; + { __t >= __u } -> __boolean_testable; + { __u < __t } -> __boolean_testable; + { __u > __t } -> __boolean_testable; + { __u <= __t } -> __boolean_testable; + { __u >= __t } -> __boolean_testable; +}; + +template +concept totally_ordered = equality_comparable<_Tp> && __partially_ordered_with<_Tp, _Tp>; + +// clang-format off +template +concept totally_ordered_with = + totally_ordered<_Tp> && totally_ordered<_Up> && + equality_comparable_with<_Tp, _Up> && + totally_ordered< + common_reference_t< + __make_const_lvalue_ref<_Tp>, + __make_const_lvalue_ref<_Up>>> && + __partially_ordered_with<_Tp, _Up>; +// clang-format on + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___CONCEPTS_TOTALLY_ORDERED_H diff --git a/lib/libcxx/include/__condition_variable/condition_variable.h b/lib/libcxx/include/__condition_variable/condition_variable.h new file mode 100644 index 0000000..7cbf21f --- /dev/null +++ b/lib/libcxx/include/__condition_variable/condition_variable.h @@ -0,0 +1,245 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONDITION_VARIABLE_CONDITION_VARIABLE_H +#define _LIBCPP___CONDITION_VARIABLE_CONDITION_VARIABLE_H + +#include <__chrono/steady_clock.h> +#include <__chrono/system_clock.h> +#include <__chrono/time_point.h> +#include <__config> +#include <__mutex/mutex.h> +#include <__mutex/unique_lock.h> +#include <__system_error/system_error.h> +#include <__threading_support> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_floating_point.h> +#include <__utility/move.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#ifndef _LIBCPP_HAS_NO_THREADS + +// enum class cv_status +_LIBCPP_DECLARE_STRONG_ENUM(cv_status){no_timeout, timeout}; +_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(cv_status) + +class _LIBCPP_EXPORTED_FROM_ABI condition_variable { + __libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER; + +public: + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR condition_variable() _NOEXCEPT = default; + +# ifdef _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION + ~condition_variable() = default; +# else + ~condition_variable(); +# endif + + condition_variable(const condition_variable&) = delete; + condition_variable& operator=(const condition_variable&) = delete; + + void notify_one() _NOEXCEPT; + void notify_all() _NOEXCEPT; + + void wait(unique_lock& __lk) _NOEXCEPT; + template + _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS void wait(unique_lock& __lk, _Predicate __pred); + + template + _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS cv_status + wait_until(unique_lock& __lk, const chrono::time_point<_Clock, _Duration>& __t); + + template + _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS bool + wait_until(unique_lock& __lk, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred); + + template + _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS cv_status + wait_for(unique_lock& __lk, const chrono::duration<_Rep, _Period>& __d); + + template + bool _LIBCPP_HIDE_FROM_ABI + wait_for(unique_lock& __lk, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred); + + typedef __libcpp_condvar_t* native_handle_type; + _LIBCPP_HIDE_FROM_ABI native_handle_type native_handle() { return &__cv_; } + +private: + void + __do_timed_wait(unique_lock& __lk, chrono::time_point) _NOEXCEPT; +# if defined(_LIBCPP_HAS_COND_CLOCKWAIT) + _LIBCPP_HIDE_FROM_ABI void + __do_timed_wait(unique_lock& __lk, chrono::time_point) _NOEXCEPT; +# endif + template + _LIBCPP_HIDE_FROM_ABI void + __do_timed_wait(unique_lock& __lk, chrono::time_point<_Clock, chrono::nanoseconds>) _NOEXCEPT; +}; +#endif // !_LIBCPP_HAS_NO_THREADS + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t::value, chrono::nanoseconds> +__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d) { + using namespace chrono; + using __ratio = ratio_divide<_Period, nano>; + using __ns_rep = nanoseconds::rep; + _Rep __result_float = __d.count() * __ratio::num / __ratio::den; + + _Rep __result_max = numeric_limits<__ns_rep>::max(); + if (__result_float >= __result_max) { + return nanoseconds::max(); + } + + _Rep __result_min = numeric_limits<__ns_rep>::min(); + if (__result_float <= __result_min) { + return nanoseconds::min(); + } + + return nanoseconds(static_cast<__ns_rep>(__result_float)); +} + +template +inline _LIBCPP_HIDE_FROM_ABI __enable_if_t::value, chrono::nanoseconds> +__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d) { + using namespace chrono; + if (__d.count() == 0) { + return nanoseconds(0); + } + + using __ratio = ratio_divide<_Period, nano>; + using __ns_rep = nanoseconds::rep; + __ns_rep __result_max = numeric_limits<__ns_rep>::max(); + if (__d.count() > 0 && __d.count() > __result_max / __ratio::num) { + return nanoseconds::max(); + } + + __ns_rep __result_min = numeric_limits<__ns_rep>::min(); + if (__d.count() < 0 && __d.count() < __result_min / __ratio::num) { + return nanoseconds::min(); + } + + __ns_rep __result = __d.count() * __ratio::num / __ratio::den; + if (__result == 0) { + return nanoseconds(1); + } + + return nanoseconds(__result); +} + +#ifndef _LIBCPP_HAS_NO_THREADS +template +void condition_variable::wait(unique_lock& __lk, _Predicate __pred) { + while (!__pred()) + wait(__lk); +} + +template +cv_status condition_variable::wait_until(unique_lock& __lk, const chrono::time_point<_Clock, _Duration>& __t) { + using namespace chrono; + using __clock_tp_ns = time_point<_Clock, nanoseconds>; + + typename _Clock::time_point __now = _Clock::now(); + if (__t <= __now) + return cv_status::timeout; + + __clock_tp_ns __t_ns = __clock_tp_ns(std::__safe_nanosecond_cast(__t.time_since_epoch())); + + __do_timed_wait(__lk, __t_ns); + return _Clock::now() < __t ? cv_status::no_timeout : cv_status::timeout; +} + +template +bool condition_variable::wait_until( + unique_lock& __lk, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred) { + while (!__pred()) { + if (wait_until(__lk, __t) == cv_status::timeout) + return __pred(); + } + return true; +} + +template +cv_status condition_variable::wait_for(unique_lock& __lk, const chrono::duration<_Rep, _Period>& __d) { + using namespace chrono; + if (__d <= __d.zero()) + return cv_status::timeout; + using __ns_rep = nanoseconds::rep; + steady_clock::time_point __c_now = steady_clock::now(); + +# if defined(_LIBCPP_HAS_COND_CLOCKWAIT) + using __clock_tp_ns = time_point; + __ns_rep __now_count_ns = std::__safe_nanosecond_cast(__c_now.time_since_epoch()).count(); +# else + using __clock_tp_ns = time_point; + __ns_rep __now_count_ns = std::__safe_nanosecond_cast(system_clock::now().time_since_epoch()).count(); +# endif + + __ns_rep __d_ns_count = std::__safe_nanosecond_cast(__d).count(); + + if (__now_count_ns > numeric_limits<__ns_rep>::max() - __d_ns_count) { + __do_timed_wait(__lk, __clock_tp_ns::max()); + } else { + __do_timed_wait(__lk, __clock_tp_ns(nanoseconds(__now_count_ns + __d_ns_count))); + } + + return steady_clock::now() - __c_now < __d ? cv_status::no_timeout : cv_status::timeout; +} + +template +inline bool +condition_variable::wait_for(unique_lock& __lk, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred) { + return wait_until(__lk, chrono::steady_clock::now() + __d, std::move(__pred)); +} + +# if defined(_LIBCPP_HAS_COND_CLOCKWAIT) +inline void condition_variable::__do_timed_wait( + unique_lock& __lk, chrono::time_point __tp) _NOEXCEPT { + using namespace chrono; + if (!__lk.owns_lock()) + __throw_system_error(EPERM, "condition_variable::timed wait: mutex not locked"); + nanoseconds __d = __tp.time_since_epoch(); + timespec __ts; + seconds __s = duration_cast(__d); + using __ts_sec = decltype(__ts.tv_sec); + const __ts_sec __ts_sec_max = numeric_limits<__ts_sec>::max(); + if (__s.count() < __ts_sec_max) { + __ts.tv_sec = static_cast<__ts_sec>(__s.count()); + __ts.tv_nsec = (__d - __s).count(); + } else { + __ts.tv_sec = __ts_sec_max; + __ts.tv_nsec = giga::num - 1; + } + int __ec = pthread_cond_clockwait(&__cv_, __lk.mutex()->native_handle(), CLOCK_MONOTONIC, &__ts); + if (__ec != 0 && __ec != ETIMEDOUT) + __throw_system_error(__ec, "condition_variable timed_wait failed"); +} +# endif // _LIBCPP_HAS_COND_CLOCKWAIT + +template +inline void condition_variable::__do_timed_wait(unique_lock& __lk, + chrono::time_point<_Clock, chrono::nanoseconds> __tp) _NOEXCEPT { + wait_for(__lk, __tp - _Clock::now()); +} + +#endif // _LIBCPP_HAS_NO_THREADS + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___CONDITION_VARIABLE_CONDITION_VARIABLE_H diff --git a/lib/libcxx/include/__config b/lib/libcxx/include/__config new file mode 100644 index 0000000..fc76e6b --- /dev/null +++ b/lib/libcxx/include/__config @@ -0,0 +1,1486 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___CONFIG +#define _LIBCPP___CONFIG + +/* zig patch: instead of including __config_site, zig adds -D flags when compiling */ + +#if defined(_MSC_VER) && !defined(__clang__) +# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# endif +#endif + +#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER +# pragma GCC system_header +#endif + +#if defined(__apple_build_version__) +// Given AppleClang XX.Y.Z, _LIBCPP_APPLE_CLANG_VER is XXYZ (e.g. AppleClang 14.0.3 => 1403) +# define _LIBCPP_COMPILER_CLANG_BASED +# define _LIBCPP_APPLE_CLANG_VER (__apple_build_version__ / 10000) +#elif defined(__clang__) +# define _LIBCPP_COMPILER_CLANG_BASED +# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) +#elif defined(__GNUC__) +# define _LIBCPP_COMPILER_GCC +#endif + +#ifdef __cplusplus + +// The attributes supported by clang are documented at https://clang.llvm.org/docs/AttributeReference.html + +// _LIBCPP_VERSION represents the version of libc++, which matches the version of LLVM. +// Given a LLVM release LLVM XX.YY.ZZ (e.g. LLVM 17.0.1 == 17.00.01), _LIBCPP_VERSION is +// defined to XXYYZZ. +# define _LIBCPP_VERSION 170000 + +# define _LIBCPP_CONCAT_IMPL(_X, _Y) _X##_Y +# define _LIBCPP_CONCAT(_X, _Y) _LIBCPP_CONCAT_IMPL(_X, _Y) + +// Valid C++ identifier that revs with every libc++ version. This can be used to +// generate identifiers that must be unique for every released libc++ version. +# define _LIBCPP_VERSIONED_IDENTIFIER _LIBCPP_CONCAT(v, _LIBCPP_VERSION) + +# if __STDC_HOSTED__ == 0 +# define _LIBCPP_FREESTANDING +# endif + +// NOLINTBEGIN(libcpp-cpp-version-check) +# ifndef _LIBCPP_STD_VER +# if __cplusplus <= 201103L +# define _LIBCPP_STD_VER 11 +# elif __cplusplus <= 201402L +# define _LIBCPP_STD_VER 14 +# elif __cplusplus <= 201703L +# define _LIBCPP_STD_VER 17 +# elif __cplusplus <= 202002L +# define _LIBCPP_STD_VER 20 +# elif __cplusplus <= 202302L +# define _LIBCPP_STD_VER 23 +# else +// Expected release year of the next C++ standard +# define _LIBCPP_STD_VER 26 +# endif +# endif // _LIBCPP_STD_VER +// NOLINTEND(libcpp-cpp-version-check) + +# if defined(__ELF__) +# define _LIBCPP_OBJECT_FORMAT_ELF 1 +# elif defined(__MACH__) +# define _LIBCPP_OBJECT_FORMAT_MACHO 1 +# elif defined(_WIN32) +# define _LIBCPP_OBJECT_FORMAT_COFF 1 +# elif defined(__wasm__) +# define _LIBCPP_OBJECT_FORMAT_WASM 1 +# elif defined(_AIX) +# define _LIBCPP_OBJECT_FORMAT_XCOFF 1 +# else +// ... add new file formats here ... +# endif + +// ABI { + +# if _LIBCPP_ABI_VERSION >= 2 +// Change short string representation so that string data starts at offset 0, +// improving its alignment in some cases. +# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT +// Fix deque iterator type in order to support incomplete types. +# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE +// Fix undefined behavior in how std::list stores its linked nodes. +# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB +// Fix undefined behavior in how __tree stores its end and parent nodes. +# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB +// Fix undefined behavior in how __hash_table stores its pointer types. +# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB +# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB +# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE +// Define a key function for `bad_function_call` in the library, to centralize +// its vtable and typeinfo to libc++ rather than having all other libraries +// using that class define their own copies. +# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION +// Override the default return value of exception::what() for +// bad_function_call::what() with a string that is specific to +// bad_function_call (see http://wg21.link/LWG2233). This is an ABI break +// because it changes the vtable layout of bad_function_call. +# define _LIBCPP_ABI_BAD_FUNCTION_CALL_GOOD_WHAT_MESSAGE +// Enable optimized version of __do_get_(un)signed which avoids redundant copies. +# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET +// Give reverse_iterator one data member of type T, not two. +// Also, in C++17 and later, don't derive iterator types from std::iterator. +# define _LIBCPP_ABI_NO_ITERATOR_BASES +// Use the smallest possible integer type to represent the index of the variant. +// Previously libc++ used "unsigned int" exclusively. +# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION +// Unstable attempt to provide a more optimized std::function +# define _LIBCPP_ABI_OPTIMIZED_FUNCTION +// All the regex constants must be distinct and nonzero. +# define _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO +// Re-worked external template instantiations for std::string with a focus on +// performance and fast-path inlining. +# define _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION +// Enable clang::trivial_abi on std::unique_ptr. +# define _LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI +// Enable clang::trivial_abi on std::shared_ptr and std::weak_ptr +# define _LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI +// std::random_device holds some state when it uses an implementation that gets +// entropy from a file (see _LIBCPP_USING_DEV_RANDOM). When switching from this +// implementation to another one on a platform that has already shipped +// std::random_device, one needs to retain the same object layout to remain ABI +// compatible. This switch removes these workarounds for platforms that don't care +// about ABI compatibility. +# define _LIBCPP_ABI_NO_RANDOM_DEVICE_COMPATIBILITY_LAYOUT +// Don't export the legacy __basic_string_common class and its methods from the built library. +# define _LIBCPP_ABI_DO_NOT_EXPORT_BASIC_STRING_COMMON +// Don't export the legacy __vector_base_common class and its methods from the built library. +# define _LIBCPP_ABI_DO_NOT_EXPORT_VECTOR_BASE_COMMON +// According to the Standard, `bitset::operator[] const` returns bool +# define _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL +// Fix the implementation of CityHash used for std::hash. +// This is an ABI break because `std::hash` will return a different result, +// which means that hashing the same object in translation units built against +// different versions of libc++ can return inconsistent results. This is especially +// tricky since std::hash is used in the implementation of unordered containers. +// +// The incorrect implementation of CityHash has the problem that it drops some +// bits on the floor. +# define _LIBCPP_ABI_FIX_CITYHASH_IMPLEMENTATION +// Remove the base 10 implementation of std::to_chars from the dylib. +// The implementation moved to the header, but we still export the symbols from +// the dylib for backwards compatibility. +# define _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10 +# elif _LIBCPP_ABI_VERSION == 1 +# if !(defined(_LIBCPP_OBJECT_FORMAT_COFF) || defined(_LIBCPP_OBJECT_FORMAT_XCOFF)) +// Enable compiling copies of now inline methods into the dylib to support +// applications compiled against older libraries. This is unnecessary with +// COFF dllexport semantics, since dllexport forces a non-inline definition +// of inline functions to be emitted anyway. Our own non-inline copy would +// conflict with the dllexport-emitted copy, so we disable it. For XCOFF, +// the linker will take issue with the symbols in the shared object if the +// weak inline methods get visibility (such as from -fvisibility-inlines-hidden), +// so disable it. +# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS +# endif +// Feature macros for disabling pre ABI v1 features. All of these options +// are deprecated. +# if defined(__FreeBSD__) +# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR +# endif +// For XCOFF linkers, we have problems if we see a weak hidden version of a symbol +// in user code (like you get with -fvisibility-inlines-hidden) and then a strong def +// in the library, so we need to always rely on the library version. +# if defined(_AIX) +# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION +# endif +# endif + +# if defined(_LIBCPP_BUILDING_LIBRARY) || _LIBCPP_ABI_VERSION >= 2 +// Enable additional explicit instantiations of iostreams components. This +// reduces the number of weak definitions generated in programs that use +// iostreams by providing a single strong definition in the shared library. +# define _LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 + +// Define a key function for `bad_function_call` in the library, to centralize +// its vtable and typeinfo to libc++ rather than having all other libraries +// using that class define their own copies. +# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION +# endif + +// Changes the iterator type of select containers (see below) to a bounded iterator that keeps track of whether it's +// within the bounds of the original container and asserts it on every dereference. +// +// ABI impact: changes the iterator type of the relevant containers. +// +// Supported containers: +// - `span`; +// - `string_view`; +// - `array`. +// #define _LIBCPP_ABI_BOUNDED_ITERATORS + +// } ABI + +// HARDENING { + +# ifndef _LIBCPP_ENABLE_ASSERTIONS +# define _LIBCPP_ENABLE_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS_DEFAULT +# endif +# if _LIBCPP_ENABLE_ASSERTIONS != 0 && _LIBCPP_ENABLE_ASSERTIONS != 1 +# error "_LIBCPP_ENABLE_ASSERTIONS must be set to 0 or 1" +# endif + +// NOTE: These modes are experimental and are not stable yet in LLVM 17. Please refrain from using them and use the +// documented libc++ "safe" mode instead. +// +// Enables the hardened mode which consists of all checks intended to be used in production. Hardened mode prioritizes +// security-critical checks that can be done with relatively little overhead in constant time. Mutually exclusive with +// `_LIBCPP_ENABLE_DEBUG_MODE`. +// +// #define _LIBCPP_ENABLE_HARDENED_MODE 1 + +// Enables the debug mode which contains all the checks from the hardened mode and additionally more expensive checks +// that may affect the complexity of algorithms. The debug mode is intended to be used for testing, not in production. +// Mutually exclusive with `_LIBCPP_ENABLE_HARDENED_MODE`. +// +// #define _LIBCPP_ENABLE_DEBUG_MODE 1 + +// Inside the library, assertions are categorized so they can be cherry-picked based on the chosen hardening mode. These +// macros are only for internal use -- users should only pick one of the high-level hardening modes described above. +// +// - `_LIBCPP_ASSERT_VALID_INPUT_RANGE` -- checks that ranges (whether expressed as an iterator pair, an iterator and +// a sentinel, an iterator and a count, or a `std::range`) given as input to library functions are valid: +// - the sentinel is reachable from the begin iterator; +// - TODO(hardening): both iterators refer to the same container. +// +// - `_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS` -- checks that any attempts to access a container element, whether through +// the container object or through an iterator, are valid and do not attempt to go out of bounds or otherwise access +// a non-existent element. For iterator checks to work, bounded iterators must be enabled in the ABI. Types like +// `optional` and `function` are considered one-element containers for the purposes of this check. +// +// - `_LIBCPP_ASSERT_NON_OVERLAPPING_RANGES` -- for functions that take several ranges as arguments, checks that the +// given ranges do not overlap. +// +// - `_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR` -- checks any operations that exchange nodes between containers to make sure +// the containers have compatible allocators. +// +// - `_LIBCPP_ASSERT_INTERNAL` -- checks that internal invariants of the library hold. These assertions don't depend on +// user input. +// +// - `_LIBCPP_ASSERT_UNCATEGORIZED` -- for assertions that haven't been properly classified yet. + +# ifndef _LIBCPP_ENABLE_HARDENED_MODE +# define _LIBCPP_ENABLE_HARDENED_MODE _LIBCPP_ENABLE_HARDENED_MODE_DEFAULT +# endif +# if _LIBCPP_ENABLE_HARDENED_MODE != 0 && _LIBCPP_ENABLE_HARDENED_MODE != 1 +# error "_LIBCPP_ENABLE_HARDENED_MODE must be set to 0 or 1." +# endif + +# ifndef _LIBCPP_ENABLE_DEBUG_MODE +# define _LIBCPP_ENABLE_DEBUG_MODE _LIBCPP_ENABLE_DEBUG_MODE_DEFAULT +# endif +# if _LIBCPP_ENABLE_DEBUG_MODE != 0 && _LIBCPP_ENABLE_DEBUG_MODE != 1 +# error "_LIBCPP_ENABLE_DEBUG_MODE must be set to 0 or 1." +# endif + +# if _LIBCPP_ENABLE_HARDENED_MODE && _LIBCPP_ENABLE_DEBUG_MODE +# error "Only one of _LIBCPP_ENABLE_HARDENED_MODE and _LIBCPP_ENABLE_DEBUG_MODE can be enabled." +# endif + +# if _LIBCPP_ENABLE_ASSERTIONS && (_LIBCPP_ENABLE_HARDENED_MODE || _LIBCPP_ENABLE_DEBUG_MODE) +# error \ + "_LIBCPP_ENABLE_ASSERTIONS is mutually exclusive with _LIBCPP_ENABLE_HARDENED_MODE and _LIBCPP_ENABLE_DEBUG_MODE." +# endif + +// Hardened mode checks. + +// clang-format off +# if _LIBCPP_ENABLE_HARDENED_MODE + +// Enabled checks. +# define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message) _LIBCPP_ASSERT(expression, message) +// Disabled checks. +// Overlapping ranges will make algorithms produce incorrect results but don't directly lead to a security +// vulnerability. +# define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_INTERNAL(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message) _LIBCPP_ASSUME(expression) + +// Debug mode checks. + +# elif _LIBCPP_ENABLE_DEBUG_MODE + +// All checks enabled. +# define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_INTERNAL(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message) _LIBCPP_ASSERT(expression, message) + +// Safe mode checks. + +# elif _LIBCPP_ENABLE_ASSERTIONS + +// All checks enabled. +# define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_INTERNAL(expression, message) _LIBCPP_ASSERT(expression, message) +# define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message) _LIBCPP_ASSERT(expression, message) + +// Disable all checks if hardening is not enabled. + +# else + +// All checks disabled. +# define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_INTERNAL(expression, message) _LIBCPP_ASSUME(expression) +# define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message) _LIBCPP_ASSUME(expression) + +# endif // _LIBCPP_ENABLE_HARDENED_MODE +// clang-format on + +// } HARDENING + +# define _LIBCPP_TOSTRING2(x) #x +# define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) + +// NOLINTNEXTLINE(libcpp-cpp-version-check) +# if __cplusplus < 201103L +# define _LIBCPP_CXX03_LANG +# endif + +# ifndef __has_attribute +# define __has_attribute(__x) 0 +# endif + +# ifndef __has_builtin +# define __has_builtin(__x) 0 +# endif + +# ifndef __has_extension +# define __has_extension(__x) 0 +# endif + +# ifndef __has_feature +# define __has_feature(__x) 0 +# endif + +# ifndef __has_cpp_attribute +# define __has_cpp_attribute(__x) 0 +# endif + +# ifndef __has_constexpr_builtin +# define __has_constexpr_builtin(x) 0 +# endif + +// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by +// the compiler and '1' otherwise. +# ifndef __is_identifier +# define __is_identifier(__x) 1 +# endif + +# ifndef __has_declspec_attribute +# define __has_declspec_attribute(__x) 0 +# endif + +# define __has_keyword(__x) !(__is_identifier(__x)) + +# ifndef __has_include +# define __has_include(...) 0 +# endif + +# if !defined(_LIBCPP_COMPILER_CLANG_BASED) && __cplusplus < 201103L +# error "libc++ only supports C++03 with Clang-based compilers. Please enable C++11" +# endif + +// FIXME: ABI detection should be done via compiler builtin macros. This +// is just a placeholder until Clang implements such macros. For now assume +// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, +// and allow the user to explicitly specify the ABI to handle cases where this +// heuristic falls short. +# if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) +# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" +# elif defined(_LIBCPP_ABI_FORCE_ITANIUM) +# define _LIBCPP_ABI_ITANIUM +# elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) +# define _LIBCPP_ABI_MICROSOFT +# else +# if defined(_WIN32) && defined(_MSC_VER) +# define _LIBCPP_ABI_MICROSOFT +# else +# define _LIBCPP_ABI_ITANIUM +# endif +# endif + +# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) +# define _LIBCPP_ABI_VCRUNTIME +# endif + +# if __has_feature(experimental_library) +# ifndef _LIBCPP_ENABLE_EXPERIMENTAL +# define _LIBCPP_ENABLE_EXPERIMENTAL +# endif +# endif + +// Incomplete features get their own specific disabling flags. This makes it +// easier to grep for target specific flags once the feature is complete. +# if !defined(_LIBCPP_ENABLE_EXPERIMENTAL) && !defined(_LIBCPP_BUILDING_LIBRARY) +# define _LIBCPP_HAS_NO_INCOMPLETE_PSTL +# endif + +# if !defined(_LIBCPP_ENABLE_EXPERIMENTAL) && !defined(_LIBCPP_BUILDING_LIBRARY) +# define _LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN +# endif + +// Need to detect which libc we're using if we're on Linux. +# if defined(__linux__) +# include +# if defined(__GLIBC_PREREQ) +# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) +# else +# define _LIBCPP_GLIBC_PREREQ(a, b) 0 +# endif // defined(__GLIBC_PREREQ) +# endif // defined(__linux__) + +# if defined(__MVS__) +# include // for __NATIVE_ASCII_F +# endif + +# ifdef __LITTLE_ENDIAN__ +# if __LITTLE_ENDIAN__ +# define _LIBCPP_LITTLE_ENDIAN +# endif // __LITTLE_ENDIAN__ +# endif // __LITTLE_ENDIAN__ + +# ifdef __BIG_ENDIAN__ +# if __BIG_ENDIAN__ +# define _LIBCPP_BIG_ENDIAN +# endif // __BIG_ENDIAN__ +# endif // __BIG_ENDIAN__ + +# ifdef __BYTE_ORDER__ +# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ +# define _LIBCPP_LITTLE_ENDIAN +# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +# define _LIBCPP_BIG_ENDIAN +# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +# endif // __BYTE_ORDER__ + +# ifdef __FreeBSD__ +# include +# include +# if _BYTE_ORDER == _LITTLE_ENDIAN +# define _LIBCPP_LITTLE_ENDIAN +# else // _BYTE_ORDER == _LITTLE_ENDIAN +# define _LIBCPP_BIG_ENDIAN +# endif // _BYTE_ORDER == _LITTLE_ENDIAN +# endif // __FreeBSD__ + +# if defined(__NetBSD__) || defined(__OpenBSD__) +# include +# if _BYTE_ORDER == _LITTLE_ENDIAN +# define _LIBCPP_LITTLE_ENDIAN +# else // _BYTE_ORDER == _LITTLE_ENDIAN +# define _LIBCPP_BIG_ENDIAN +# endif // _BYTE_ORDER == _LITTLE_ENDIAN +# endif // defined(__NetBSD__) || defined(__OpenBSD__) + +# if defined(_WIN32) +# define _LIBCPP_WIN32API +# define _LIBCPP_LITTLE_ENDIAN +# define _LIBCPP_SHORT_WCHAR 1 +// Both MinGW and native MSVC provide a "MSVC"-like environment +# define _LIBCPP_MSVCRT_LIKE +// If mingw not explicitly detected, assume using MS C runtime only if +// a MS compatibility version is specified. +# if defined(_MSC_VER) && !defined(__MINGW32__) +# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library +# endif +# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) +# define _LIBCPP_HAS_BITSCAN64 +# endif +# define _LIBCPP_HAS_OPEN_WITH_WCHAR +# endif // defined(_WIN32) + +# if defined(_AIX) && !defined(__64BIT__) +// The size of wchar is 2 byte on 32-bit mode on AIX. +# define _LIBCPP_SHORT_WCHAR 1 +# endif + +// Libc++ supports various implementations of std::random_device. +// +// _LIBCPP_USING_DEV_RANDOM +// Read entropy from the given file, by default `/dev/urandom`. +// If a token is provided, it is assumed to be the path to a file +// to read entropy from. This is the default behavior if nothing +// else is specified. This implementation requires storing state +// inside `std::random_device`. +// +// _LIBCPP_USING_ARC4_RANDOM +// Use arc4random(). This allows obtaining random data even when +// using sandboxing mechanisms. On some platforms like Apple, this +// is the recommended source of entropy for user-space programs. +// When this option is used, the token passed to `std::random_device`'s +// constructor *must* be "/dev/urandom" -- anything else is an error. +// +// _LIBCPP_USING_GETENTROPY +// Use getentropy(). +// When this option is used, the token passed to `std::random_device`'s +// constructor *must* be "/dev/urandom" -- anything else is an error. +// +// _LIBCPP_USING_FUCHSIA_CPRNG +// Use Fuchsia's zx_cprng_draw() system call, which is specified to +// deliver high-quality entropy and cannot fail. +// When this option is used, the token passed to `std::random_device`'s +// constructor *must* be "/dev/urandom" -- anything else is an error. +// +// _LIBCPP_USING_NACL_RANDOM +// NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, +// including accesses to the special files under `/dev`. This implementation +// uses the NaCL syscall `nacl_secure_random_init()` to get entropy. +// When this option is used, the token passed to `std::random_device`'s +// constructor *must* be "/dev/urandom" -- anything else is an error. +// +// _LIBCPP_USING_WIN32_RANDOM +// Use rand_s(), for use on Windows. +// When this option is used, the token passed to `std::random_device`'s +// constructor *must* be "/dev/urandom" -- anything else is an error. +# if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ + defined(__DragonFly__) +# define _LIBCPP_USING_ARC4_RANDOM +# elif defined(__wasi__) || defined(__EMSCRIPTEN__) +# define _LIBCPP_USING_GETENTROPY +# elif defined(__Fuchsia__) +# define _LIBCPP_USING_FUCHSIA_CPRNG +# elif defined(__native_client__) +# define _LIBCPP_USING_NACL_RANDOM +# elif defined(_LIBCPP_WIN32API) +# define _LIBCPP_USING_WIN32_RANDOM +# else +# define _LIBCPP_USING_DEV_RANDOM +# endif + +# if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) +# include +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define _LIBCPP_LITTLE_ENDIAN +# elif __BYTE_ORDER == __BIG_ENDIAN +# define _LIBCPP_BIG_ENDIAN +# else // __BYTE_ORDER == __BIG_ENDIAN +# error unable to determine endian +# endif +# endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) + +# if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) +# else +# define _LIBCPP_NO_CFI +# endif + +# ifndef _LIBCPP_CXX03_LANG + +# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) +# define _ALIGNAS_TYPE(x) alignas(x) +# define _ALIGNAS(x) alignas(x) +# define _LIBCPP_NORETURN [[noreturn]] +# define _NOEXCEPT noexcept +# define _NOEXCEPT_(x) noexcept(x) +# define _LIBCPP_CONSTEXPR constexpr + +# else + +# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) +# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) +# define _ALIGNAS(x) __attribute__((__aligned__(x))) +# define _LIBCPP_NORETURN __attribute__((__noreturn__)) +# define _LIBCPP_HAS_NO_NOEXCEPT +# define nullptr __nullptr +# define _NOEXCEPT throw() +# define _NOEXCEPT_(x) +# define static_assert(...) _Static_assert(__VA_ARGS__) +# define decltype(...) __decltype(__VA_ARGS__) +# define _LIBCPP_CONSTEXPR + +typedef __char16_t char16_t; +typedef __char32_t char32_t; + +# endif + +# if !defined(__cpp_exceptions) || __cpp_exceptions < 199711L +# define _LIBCPP_HAS_NO_EXCEPTIONS +# endif + +# define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) + +# if defined(_LIBCPP_COMPILER_CLANG_BASED) + +# if defined(__APPLE__) +# if defined(__i386__) || defined(__x86_64__) +// use old string layout on x86_64 and i386 +# elif defined(__arm__) +// use old string layout on arm (which does not include aarch64/arm64), except on watch ABIs +# if defined(__ARM_ARCH_7K__) && __ARM_ARCH_7K__ >= 2 +# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT +# endif +# else +# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT +# endif +# endif + +// Objective-C++ features (opt-in) +# if __has_feature(objc_arc) +# define _LIBCPP_HAS_OBJC_ARC +# endif + +# if __has_feature(objc_arc_weak) +# define _LIBCPP_HAS_OBJC_ARC_WEAK +# endif + +# if __has_extension(blocks) +# define _LIBCPP_HAS_EXTENSION_BLOCKS +# endif + +# if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) +# define _LIBCPP_HAS_BLOCKS_RUNTIME +# endif + +# if !__has_feature(address_sanitizer) +# define _LIBCPP_HAS_NO_ASAN +# endif + +// Allow for build-time disabling of unsigned integer sanitization +# if __has_attribute(no_sanitize) +# define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) +# endif + +# define _LIBCPP_ALWAYS_INLINE __attribute__((__always_inline__)) + +# define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ + +# elif defined(_LIBCPP_COMPILER_GCC) + +# if !defined(__SANITIZE_ADDRESS__) +# define _LIBCPP_HAS_NO_ASAN +# endif + +# define _LIBCPP_ALWAYS_INLINE __attribute__((__always_inline__)) + +# define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ + +# endif // _LIBCPP_COMPILER_[CLANG|GCC] + +# if defined(_LIBCPP_OBJECT_FORMAT_COFF) + +# ifdef _DLL +# define _LIBCPP_CRT_FUNC __declspec(dllimport) +# else +# define _LIBCPP_CRT_FUNC +# endif + +# if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) || (defined(__MINGW32__) && !defined(_LIBCPP_BUILDING_LIBRARY)) +# define _LIBCPP_DLL_VIS +# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS +# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS +# define _LIBCPP_OVERRIDABLE_FUNC_VIS +# define _LIBCPP_EXPORTED_FROM_ABI +# elif defined(_LIBCPP_BUILDING_LIBRARY) +# define _LIBCPP_DLL_VIS __declspec(dllexport) +# if defined(__MINGW32__) +# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS +# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS +# else +# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS +# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS +# endif +# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS +# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) +# else +# define _LIBCPP_DLL_VIS __declspec(dllimport) +# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS +# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS +# define _LIBCPP_OVERRIDABLE_FUNC_VIS +# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) +# endif + +# define _LIBCPP_HIDDEN +# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS +# define _LIBCPP_TEMPLATE_VIS +# define _LIBCPP_TEMPLATE_DATA_VIS +# define _LIBCPP_ENUM_VIS + +# else + +# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) +# define _LIBCPP_VISIBILITY(vis) __attribute__((__visibility__(vis))) +# else +# define _LIBCPP_VISIBILITY(vis) +# endif + +# define _LIBCPP_HIDDEN _LIBCPP_VISIBILITY("hidden") +# define _LIBCPP_TEMPLATE_DATA_VIS _LIBCPP_VISIBILITY("default") +# define _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_VISIBILITY("default") +# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_VISIBILITY("default") +# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS + +// TODO: Make this a proper customization point or remove the option to override it. +# ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS +# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_VISIBILITY("default") +# endif + +# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) +// The inline should be removed once PR32114 is resolved +# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN +# else +# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS +# endif + +# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) +# if __has_attribute(__type_visibility__) +# define _LIBCPP_TEMPLATE_VIS __attribute__((__type_visibility__("default"))) +# else +# define _LIBCPP_TEMPLATE_VIS __attribute__((__visibility__("default"))) +# endif +# else +# define _LIBCPP_TEMPLATE_VIS +# endif + +# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) +# define _LIBCPP_ENUM_VIS __attribute__((__type_visibility__("default"))) +# else +# define _LIBCPP_ENUM_VIS +# endif + +# endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) + +# if __has_attribute(exclude_from_explicit_instantiation) +# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__((__exclude_from_explicit_instantiation__)) +# else +// Try to approximate the effect of exclude_from_explicit_instantiation +// (which is that entities are not assumed to be provided by explicit +// template instantiations in the dylib) by always inlining those entities. +# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE +# endif + +// This macro marks a symbol as being hidden from libc++'s ABI. This is achieved +// on two levels: +// 1. The symbol is given hidden visibility, which ensures that users won't start exporting +// symbols from their dynamic library by means of using the libc++ headers. This ensures +// that those symbols stay private to the dynamic library in which it is defined. +// +// 2. The symbol is given an ABI tag that changes with each version of libc++. This ensures +// that no ODR violation can arise from mixing two TUs compiled with different versions +// of libc++ where we would have changed the definition of a symbol. If the symbols shared +// the same name, the ODR would require that their definitions be token-by-token equivalent, +// which basically prevents us from being able to make any change to any function in our +// headers. Using this ABI tag ensures that the symbol name is "bumped" artificially at +// each release, which lets us change the definition of these symbols at our leisure. +// Note that historically, this has been achieved in various ways, including force-inlining +// all functions or giving internal linkage to all functions. Both these (previous) solutions +// suffer from drawbacks that lead notably to code bloat. +// +// Note that we use _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION to ensure that we don't depend +// on _LIBCPP_HIDE_FROM_ABI methods of classes explicitly instantiated in the dynamic library. +// +// Also note that the _LIBCPP_HIDE_FROM_ABI_VIRTUAL macro should be used on virtual functions +// instead of _LIBCPP_HIDE_FROM_ABI. That macro does not use an ABI tag. Indeed, the mangled +// name of a virtual function is part of its ABI, since some architectures like arm64e can sign +// the virtual function pointer in the vtable based on the mangled name of the function. Since +// we use an ABI tag that changes with each released version, the mangled name of the virtual +// function would change, which is incorrect. Note that it doesn't make much sense to change +// the implementation of a virtual function in an ABI-incompatible way in the first place, +// since that would be an ABI break anyway. Hence, the lack of ABI tag should not be noticeable. +// +// TODO: We provide a escape hatch with _LIBCPP_NO_ABI_TAG for folks who want to avoid increasing +// the length of symbols with an ABI tag. In practice, we should remove the escape hatch and +// use compression mangling instead, see https://github.com/itanium-cxx-abi/cxx-abi/issues/70. +# ifndef _LIBCPP_NO_ABI_TAG +# define _LIBCPP_HIDE_FROM_ABI \ + _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION \ + __attribute__((__abi_tag__(_LIBCPP_TOSTRING(_LIBCPP_VERSIONED_IDENTIFIER)))) +# else +# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION +# endif +# define _LIBCPP_HIDE_FROM_ABI_VIRTUAL _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION + +// This macro provides a HIDE_FROM_ABI equivalent that can be applied to extern +// "C" function, as those lack mangling. +# define _LIBCPP_HIDE_FROM_ABI_C _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION + +# ifdef _LIBCPP_BUILDING_LIBRARY +# if _LIBCPP_ABI_VERSION > 1 +# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI +# else +# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 +# endif +# else +# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI +# endif + +// Just so we can migrate to the new macros gradually. +# define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI + +// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. +// clang-format off +# define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { +# define _LIBCPP_END_NAMESPACE_STD }} +# define _VSTD std + +_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD + +# if _LIBCPP_STD_VER >= 17 +# define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ + _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { +# else +# define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ + _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { +# endif + +# define _LIBCPP_END_NAMESPACE_FILESYSTEM _LIBCPP_END_NAMESPACE_STD }} +// clang-format on + +# define _VSTD_FS std::__fs::filesystem + +# if __has_attribute(__enable_if__) +# define _LIBCPP_PREFERRED_OVERLOAD __attribute__((__enable_if__(true, ""))) +# endif + +# if !defined(__SIZEOF_INT128__) || defined(_MSC_VER) +# define _LIBCPP_HAS_NO_INT128 +# endif + +# if __has_attribute(__malloc__) +# define _LIBCPP_NOALIAS __attribute__((__malloc__)) +# else +# define _LIBCPP_NOALIAS +# endif + +# if __has_attribute(__using_if_exists__) +# define _LIBCPP_USING_IF_EXISTS __attribute__((__using_if_exists__)) +# else +# define _LIBCPP_USING_IF_EXISTS +# endif + +# ifdef _LIBCPP_CXX03_LANG +# define _LIBCPP_DECLARE_STRONG_ENUM(x) \ + struct _LIBCPP_EXPORTED_FROM_ABI x { \ + enum __lx +// clang-format off +# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ + __lx __v_; \ + _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ + _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ + _LIBCPP_INLINE_VISIBILITY operator int() const { return __v_; } \ + }; +// clang-format on + +# else // _LIBCPP_CXX03_LANG +# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x +# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) +# endif // _LIBCPP_CXX03_LANG + +# if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || defined(__NetBSD__) +# define _LIBCPP_LOCALE__L_EXTENSIONS 1 +# endif + +# ifdef __FreeBSD__ +# define _DECLARE_C99_LDBL_MATH 1 +# endif + +// If we are getting operator new from the MSVC CRT, then allocation overloads +// for align_val_t were added in 19.12, aka VS 2017 version 15.3. +# if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 +# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION +# elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) +// We're deferring to Microsoft's STL to provide aligned new et al. We don't +// have it unless the language feature test macro is defined. +# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION +# elif defined(__MVS__) +# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION +# endif + +# if defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) +# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION +# endif + +// It is not yet possible to use aligned_alloc() on all Apple platforms since +// 10.15 was the first version to ship an implementation of aligned_alloc(). +# if defined(__APPLE__) +# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ + __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500) +# define _LIBCPP_HAS_NO_C11_ALIGNED_ALLOC +# endif +# elif defined(__ANDROID__) && __ANDROID_API__ < 28 +// Android only provides aligned_alloc when targeting API 28 or higher. +# define _LIBCPP_HAS_NO_C11_ALIGNED_ALLOC +# endif + +# if defined(__APPLE__) || defined(__FreeBSD__) +# define _LIBCPP_HAS_DEFAULTRUNELOCALE +# endif + +# if defined(__APPLE__) || defined(__FreeBSD__) +# define _LIBCPP_WCTYPE_IS_MASK +# endif + +# if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) +# define _LIBCPP_HAS_NO_CHAR8_T +# endif + +// Deprecation macros. +// +// Deprecations warnings are always enabled, except when users explicitly opt-out +// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. +# if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) +# if __has_attribute(__deprecated__) +# define _LIBCPP_DEPRECATED __attribute__((__deprecated__)) +# define _LIBCPP_DEPRECATED_(m) __attribute__((__deprecated__(m))) +# elif _LIBCPP_STD_VER >= 14 +# define _LIBCPP_DEPRECATED [[deprecated]] +# define _LIBCPP_DEPRECATED_(m) [[deprecated(m)]] +# else +# define _LIBCPP_DEPRECATED +# define _LIBCPP_DEPRECATED_(m) +# endif +# else +# define _LIBCPP_DEPRECATED +# define _LIBCPP_DEPRECATED_(m) +# endif + +# if !defined(_LIBCPP_CXX03_LANG) +# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_IN_CXX11 +# endif + +# if _LIBCPP_STD_VER >= 14 +# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_IN_CXX14 +# endif + +# if _LIBCPP_STD_VER >= 17 +# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_IN_CXX17 +# endif + +# if _LIBCPP_STD_VER >= 20 +# define _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_IN_CXX20 +# endif + +# if _LIBCPP_STD_VER >= 23 +# define _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_IN_CXX23 +# endif + +# if !defined(_LIBCPP_HAS_NO_CHAR8_T) +# define _LIBCPP_DEPRECATED_WITH_CHAR8_T _LIBCPP_DEPRECATED +# else +# define _LIBCPP_DEPRECATED_WITH_CHAR8_T +# endif + +// Macros to enter and leave a state where deprecation warnings are suppressed. +# if defined(_LIBCPP_COMPILER_CLANG_BASED) || defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ + _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") \ + _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") +# define _LIBCPP_SUPPRESS_DEPRECATED_POP _Pragma("GCC diagnostic pop") +# else +# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH +# define _LIBCPP_SUPPRESS_DEPRECATED_POP +# endif + +# if _LIBCPP_STD_VER <= 11 +# define _LIBCPP_EXPLICIT_SINCE_CXX14 +# else +# define _LIBCPP_EXPLICIT_SINCE_CXX14 explicit +# endif + +# if _LIBCPP_STD_VER >= 23 +# define _LIBCPP_EXPLICIT_SINCE_CXX23 explicit +# else +# define _LIBCPP_EXPLICIT_SINCE_CXX23 +# endif + +# if _LIBCPP_STD_VER >= 14 +# define _LIBCPP_CONSTEXPR_SINCE_CXX14 constexpr +# else +# define _LIBCPP_CONSTEXPR_SINCE_CXX14 +# endif + +# if _LIBCPP_STD_VER >= 17 +# define _LIBCPP_CONSTEXPR_SINCE_CXX17 constexpr +# else +# define _LIBCPP_CONSTEXPR_SINCE_CXX17 +# endif + +# if _LIBCPP_STD_VER >= 20 +# define _LIBCPP_CONSTEXPR_SINCE_CXX20 constexpr +# else +# define _LIBCPP_CONSTEXPR_SINCE_CXX20 +# endif + +# if _LIBCPP_STD_VER >= 23 +# define _LIBCPP_CONSTEXPR_SINCE_CXX23 constexpr +# else +# define _LIBCPP_CONSTEXPR_SINCE_CXX23 +# endif + +# if __has_cpp_attribute(nodiscard) +# define _LIBCPP_NODISCARD [[__nodiscard__]] +# else +// We can't use GCC's [[gnu::warn_unused_result]] and +// __attribute__((warn_unused_result)), because GCC does not silence them via +// (void) cast. +# define _LIBCPP_NODISCARD +# endif + +// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not +// specified as such as an extension. +# if !defined(_LIBCPP_DISABLE_NODISCARD_EXT) +# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD +# else +# define _LIBCPP_NODISCARD_EXT +# endif + +# if _LIBCPP_STD_VER >= 20 || !defined(_LIBCPP_DISABLE_NODISCARD_EXT) +# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD +# else +# define _LIBCPP_NODISCARD_AFTER_CXX17 +# endif + +# if __has_attribute(__no_destroy__) +# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) +# else +# define _LIBCPP_NO_DESTROY +# endif + +# ifndef _LIBCPP_HAS_NO_ASAN + extern "C" _LIBCPP_EXPORTED_FROM_ABI void + __sanitizer_annotate_contiguous_container(const void*, const void*, const void*, const void*); +# if _LIBCPP_CLANG_VER >= 1600 +extern "C" _LIBCPP_EXPORTED_FROM_ABI void __sanitizer_annotate_double_ended_contiguous_container( + const void*, const void*, const void*, const void*, const void*, const void*); +extern "C" _LIBCPP_EXPORTED_FROM_ABI int +__sanitizer_verify_double_ended_contiguous_container(const void*, const void*, const void*, const void*); +# endif +# endif + +// Try to find out if RTTI is disabled. +# if !defined(__cpp_rtti) || __cpp_rtti < 199711L +# define _LIBCPP_HAS_NO_RTTI +# endif + +# ifndef _LIBCPP_WEAK +# define _LIBCPP_WEAK __attribute__((__weak__)) +# endif + +// Thread API +// clang-format off +# if !defined(_LIBCPP_HAS_NO_THREADS) && \ + !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ + !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ + !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) + +# if defined(__FreeBSD__) || \ + defined(__wasi__) || \ + defined(__NetBSD__) || \ + defined(__OpenBSD__) || \ + defined(__NuttX__) || \ + defined(__linux__) || \ + defined(__GNU__) || \ + defined(__APPLE__) || \ + defined(__MVS__) || \ + defined(_AIX) || \ + defined(__EMSCRIPTEN__) +// clang-format on +# define _LIBCPP_HAS_THREAD_API_PTHREAD +# elif defined(__Fuchsia__) +// TODO(44575): Switch to C11 thread API when possible. +# define _LIBCPP_HAS_THREAD_API_PTHREAD +# elif defined(_LIBCPP_WIN32API) +# define _LIBCPP_HAS_THREAD_API_WIN32 +# else +# error "No thread API" +# endif // _LIBCPP_HAS_THREAD_API +# endif // _LIBCPP_HAS_NO_THREADS + +# if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) +# if defined(__ANDROID__) && __ANDROID_API__ >= 30 +# define _LIBCPP_HAS_COND_CLOCKWAIT +# elif defined(_LIBCPP_GLIBC_PREREQ) +# if _LIBCPP_GLIBC_PREREQ(2, 30) +# define _LIBCPP_HAS_COND_CLOCKWAIT +# endif +# endif +# endif + +# if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) +# error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ + _LIBCPP_HAS_NO_THREADS is not defined. +# endif + +# if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) +# error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ + _LIBCPP_HAS_NO_THREADS is defined. +# endif + +# if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) +# error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ + _LIBCPP_HAS_NO_THREADS is defined. +# endif + +# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) +# define __STDCPP_THREADS__ 1 +# endif + +// The glibc and Bionic implementation of pthreads implements +// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 +// mutexes have no destroy mechanism. +// +// This optimization can't be performed on Apple platforms, where +// pthread_mutex_destroy can allow the kernel to release resources. +// See https://llvm.org/D64298 for details. +// +// TODO(EricWF): Enable this optimization on Bionic after speaking to their +// respective stakeholders. +// clang-format off +# if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) || \ + (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ + defined(_LIBCPP_HAS_THREAD_API_WIN32) +// clang-format on +# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION +# endif + +// Destroying a condvar is a nop on Windows. +// +// This optimization can't be performed on Apple platforms, where +// pthread_cond_destroy can allow the kernel to release resources. +// See https://llvm.org/D64298 for details. +// +// TODO(EricWF): This is potentially true for some pthread implementations +// as well. +# if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || defined(_LIBCPP_HAS_THREAD_API_WIN32) +# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION +# endif + +// Some systems do not provide gets() in their C library, for security reasons. +# if defined(_LIBCPP_MSVCRT) || (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || defined(__OpenBSD__) +# define _LIBCPP_C_HAS_NO_GETS +# endif + +# if defined(__BIONIC__) || defined(__NuttX__) || defined(__Fuchsia__) || defined(__wasi__) || \ + defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__) +# define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE +# endif + +# if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) +# define _LIBCPP_HAS_C_ATOMIC_IMP +# elif defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_HAS_GCC_ATOMIC_IMP +# endif + +# if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ + !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP) +# define _LIBCPP_HAS_NO_ATOMIC_HEADER +# else +# ifndef _LIBCPP_ATOMIC_FLAG_TYPE +# define _LIBCPP_ATOMIC_FLAG_TYPE bool +# endif +# ifdef _LIBCPP_FREESTANDING +# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS +# endif +# endif + +# ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK +# define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK +# endif + +# if defined(__FreeBSD__) && defined(__clang__) && __has_attribute(__no_thread_safety_analysis__) +# define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS __attribute__((__no_thread_safety_analysis__)) +# else +# define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS +# endif + +# if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) +# if defined(__clang__) && __has_attribute(acquire_capability) +// Work around the attribute handling in clang. When both __declspec and +// __attribute__ are present, the processing goes awry preventing the definition +// of the types. In MinGW mode, __declspec evaluates to __attribute__, and thus +// combining the two does work. +# if !defined(_MSC_VER) +# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS +# endif +# endif +# endif + +# ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS +# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) +# else +# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) +# endif + +# if _LIBCPP_STD_VER >= 20 +# define _LIBCPP_CONSTINIT constinit +# elif __has_attribute(__require_constant_initialization__) +# define _LIBCPP_CONSTINIT __attribute__((__require_constant_initialization__)) +# else +# define _LIBCPP_CONSTINIT +# endif + +# if __has_attribute(__diagnose_if__) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) +# define _LIBCPP_DIAGNOSE_WARNING(...) __attribute__((__diagnose_if__(__VA_ARGS__, "warning"))) +# else +# define _LIBCPP_DIAGNOSE_WARNING(...) +# endif + +// Use a function like macro to imply that it must be followed by a semicolon +# if __has_cpp_attribute(fallthrough) +# define _LIBCPP_FALLTHROUGH() [[fallthrough]] +# elif __has_attribute(__fallthrough__) +# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) +# else +# define _LIBCPP_FALLTHROUGH() ((void)0) +# endif + +# if __has_cpp_attribute(_Clang::__lifetimebound__) +# define _LIBCPP_LIFETIMEBOUND [[_Clang::__lifetimebound__]] +# else +# define _LIBCPP_LIFETIMEBOUND +# endif + +# if __has_attribute(__nodebug__) +# define _LIBCPP_NODEBUG __attribute__((__nodebug__)) +# else +# define _LIBCPP_NODEBUG +# endif + +# if __has_attribute(__standalone_debug__) +# define _LIBCPP_STANDALONE_DEBUG __attribute__((__standalone_debug__)) +# else +# define _LIBCPP_STANDALONE_DEBUG +# endif + +# if __has_attribute(__preferred_name__) +# define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) +# else +# define _LIBCPP_PREFERRED_NAME(x) +# endif + +# if __has_attribute(__no_sanitize__) +# define _LIBCPP_NO_SANITIZE(...) __attribute__((__no_sanitize__(__VA_ARGS__))) +# else +# define _LIBCPP_NO_SANITIZE(...) +# endif + +// We often repeat things just for handling wide characters in the library. +// When wide characters are disabled, it can be useful to have a quick way of +// disabling it without having to resort to #if-#endif, which has a larger +// impact on readability. +# if defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS) +# define _LIBCPP_IF_WIDE_CHARACTERS(...) +# else +# define _LIBCPP_IF_WIDE_CHARACTERS(...) __VA_ARGS__ +# endif + +# if defined(_LIBCPP_ABI_MICROSOFT) && __has_declspec_attribute(empty_bases) +# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) +# else +# define _LIBCPP_DECLSPEC_EMPTY_BASES +# endif + +# if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) +# define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR +# define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS +# define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE +# define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS +# define _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION +# endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES + +# if defined(_LIBCPP_ENABLE_CXX20_REMOVED_FEATURES) +# define _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS +# define _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_VOID_SPECIALIZATION +# define _LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS +# define _LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS +# define _LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR +# define _LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS +# endif // _LIBCPP_ENABLE_CXX20_REMOVED_FEATURES + +// clang-format off +# define _LIBCPP_PUSH_MACROS _Pragma("push_macro(\"min\")") _Pragma("push_macro(\"max\")") _Pragma("push_macro(\"refresh()\")") _Pragma("push_macro(\"move(int, int)\")") _Pragma("push_macro(\"erase()\")") +# define _LIBCPP_POP_MACROS _Pragma("pop_macro(\"min\")") _Pragma("pop_macro(\"max\")") _Pragma("pop_macro(\"refresh()\")") _Pragma("pop_macro(\"move(int, int)\")") _Pragma("pop_macro(\"erase()\")") +// clang-format on + +# ifndef _LIBCPP_NO_AUTO_LINK +# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) +# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) +# pragma comment(lib, "c++.lib") +# else +# pragma comment(lib, "libc++.lib") +# endif +# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) +# endif // _LIBCPP_NO_AUTO_LINK + +// Configures the fopen close-on-exec mode character, if any. This string will +// be appended to any mode string used by fstream for fopen/fdopen. +// +// Not all platforms support this, but it helps avoid fd-leaks on platforms that +// do. +# if defined(__BIONIC__) +# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" +# else +# define _LIBCPP_FOPEN_CLOEXEC_MODE +# endif + +// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set +// of functions used in cstdio may not be available for low API levels when +// using 64-bit file offsets on LP32. +# if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 +# define _LIBCPP_HAS_NO_FGETPOS_FSETPOS +# endif + +# if __has_attribute(__init_priority__) +# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((__init_priority__(100))) +# else +# define _LIBCPP_INIT_PRIORITY_MAX +# endif + +# if __has_attribute(__format__) +// The attribute uses 1-based indices for ordinary and static member functions. +// The attribute uses 2-based indices for non-static member functions. +# define _LIBCPP_ATTRIBUTE_FORMAT(archetype, format_string_index, first_format_arg_index) \ + __attribute__((__format__(archetype, format_string_index, first_format_arg_index))) +# else +# define _LIBCPP_ATTRIBUTE_FORMAT(archetype, format_string_index, first_format_arg_index) /* nothing */ +# endif + +# if __has_cpp_attribute(msvc::no_unique_address) +// MSVC implements [[no_unique_address]] as a silent no-op currently. +// (If/when MSVC breaks its C++ ABI, it will be changed to work as intended.) +// However, MSVC implements [[msvc::no_unique_address]] which does what +// [[no_unique_address]] is supposed to do, in general. + +// Clang-cl does not yet (14.0) implement either [[no_unique_address]] or +// [[msvc::no_unique_address]] though. If/when it does implement +// [[msvc::no_unique_address]], this should be preferred though. +# define _LIBCPP_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]] +# elif __has_cpp_attribute(no_unique_address) +# define _LIBCPP_NO_UNIQUE_ADDRESS [[__no_unique_address__]] +# else +# define _LIBCPP_NO_UNIQUE_ADDRESS /* nothing */ +// Note that this can be replaced by #error as soon as clang-cl +// implements msvc::no_unique_address, since there should be no C++20 +// compiler that doesn't support one of the two attributes at that point. +// We generally don't want to use this macro outside of C++20-only code, +// because using it conditionally in one language version only would make +// the ABI inconsistent. +# endif + +# ifdef _LIBCPP_COMPILER_CLANG_BASED +# define _LIBCPP_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push") +# define _LIBCPP_DIAGNOSTIC_POP _Pragma("clang diagnostic pop") +# define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) _Pragma(_LIBCPP_TOSTRING(clang diagnostic ignored str)) +# define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) +# elif defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push") +# define _LIBCPP_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop") +# define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) +# define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) _Pragma(_LIBCPP_TOSTRING(GCC diagnostic ignored str)) +# else +# define _LIBCPP_DIAGNOSTIC_PUSH +# define _LIBCPP_DIAGNOSTIC_POP +# define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) +# define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) +# endif + +# if defined(_AIX) && !defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_PACKED_BYTE_FOR_AIX _Pragma("pack(1)") +# define _LIBCPP_PACKED_BYTE_FOR_AIX_END _Pragma("pack(pop)") +# else +# define _LIBCPP_PACKED_BYTE_FOR_AIX /* empty */ +# define _LIBCPP_PACKED_BYTE_FOR_AIX_END /* empty */ +# endif + +# if __has_attribute(__packed__) +# define _LIBCPP_PACKED __attribute__((__packed__)) +# else +# define _LIBCPP_PACKED +# endif + +// c8rtomb() and mbrtoc8() were added in C++20 and C23. Support for these +// functions is gradually being added to existing C libraries. The conditions +// below check for known C library versions and conditions under which these +// functions are declared by the C library. +# define _LIBCPP_HAS_NO_C8RTOMB_MBRTOC8 +// GNU libc 2.36 and newer declare c8rtomb() and mbrtoc8() in C++ modes if +// __cpp_char8_t is defined or if C2X extensions are enabled. Determining +// the latter depends on internal GNU libc details that are not appropriate +// to depend on here, so any declarations present when __cpp_char8_t is not +// defined are ignored. +# if defined(_LIBCPP_GLIBC_PREREQ) +# if _LIBCPP_GLIBC_PREREQ(2, 36) && defined(__cpp_char8_t) +# undef _LIBCPP_HAS_NO_C8RTOMB_MBRTOC8 +# endif +# endif + +// There are a handful of public standard library types that are intended to +// support CTAD but don't need any explicit deduction guides to do so. This +// macro is used to mark them as such, which suppresses the +// '-Wctad-maybe-unsupported' compiler warning when CTAD is used in user code +// with these classes. +# if _LIBCPP_STD_VER >= 17 +# ifdef _LIBCPP_COMPILER_CLANG_BASED +# define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) \ + template \ + [[maybe_unused]] _ClassName(typename _Tag::__allow_ctad...)->_ClassName<_Tag...> +# else +# define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(ClassName) \ + template \ + ClassName(typename _Tag::__allow_ctad...)->ClassName<_Tag...> +# endif +# else +# define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) static_assert(true, "") +# endif + +// TODO(varconst): currently, there are bugs in Clang's intrinsics when handling Objective-C++ `id`, so don't use +// compiler intrinsics in the Objective-C++ mode. +# ifdef __OBJC__ +# define _LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS +# endif + +# define _PSTL_PRAGMA(x) _Pragma(#x) + +// Enable SIMD for compilers that support OpenMP 4.0 +# if (defined(_OPENMP) && _OPENMP >= 201307) + +# define _PSTL_UDR_PRESENT +# define _PSTL_PRAGMA_SIMD _PSTL_PRAGMA(omp simd) +# define _PSTL_PRAGMA_DECLARE_SIMD _PSTL_PRAGMA(omp declare simd) +# define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) _PSTL_PRAGMA(omp simd reduction(PRM)) +# define _PSTL_PRAGMA_SIMD_SCAN(PRM) _PSTL_PRAGMA(omp simd reduction(inscan, PRM)) +# define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan inclusive(PRM)) +# define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan exclusive(PRM)) + +// Declaration of reduction functor, where +// NAME - the name of the functor +// OP - type of the callable object with the reduction operation +// omp_in - refers to the local partial result +// omp_out - refers to the final value of the combiner operator +// omp_priv - refers to the private copy of the initial value +// omp_orig - refers to the original variable to be reduced +# define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP) \ + _PSTL_PRAGMA(omp declare reduction(NAME:OP : omp_out(omp_in)) initializer(omp_priv = omp_orig)) + +# else // (defined(_OPENMP) && _OPENMP >= 201307) + +# define _PSTL_PRAGMA_SIMD +# define _PSTL_PRAGMA_DECLARE_SIMD +# define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) +# define _PSTL_PRAGMA_SIMD_SCAN(PRM) +# define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) +# define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) +# define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP) + +# endif // (defined(_OPENMP) && _OPENMP >= 201307) + +# define _PSTL_USE_NONTEMPORAL_STORES_IF_ALLOWED + +#endif // __cplusplus + +#endif // _LIBCPP___CONFIG diff --git a/lib/libcxx/include/__coroutine/coroutine_handle.h b/lib/libcxx/include/__coroutine/coroutine_handle.h new file mode 100644 index 0000000..7a4eff7 --- /dev/null +++ b/lib/libcxx/include/__coroutine/coroutine_handle.h @@ -0,0 +1,201 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COROUTINE_COROUTINE_HANDLE_H +#define _LIBCPP___COROUTINE_COROUTINE_HANDLE_H + +#include <__assert> +#include <__config> +#include <__functional/hash.h> +#include <__memory/addressof.h> +#include <__type_traits/remove_cv.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +// [coroutine.handle] +template +struct _LIBCPP_TEMPLATE_VIS coroutine_handle; + +template <> +struct _LIBCPP_TEMPLATE_VIS coroutine_handle { +public: + // [coroutine.handle.con], construct/reset + constexpr coroutine_handle() noexcept = default; + + _LIBCPP_HIDE_FROM_ABI + constexpr coroutine_handle(nullptr_t) noexcept {} + + _LIBCPP_HIDE_FROM_ABI + coroutine_handle& operator=(nullptr_t) noexcept { + __handle_ = nullptr; + return *this; + } + + // [coroutine.handle.export.import], export/import + _LIBCPP_HIDE_FROM_ABI + constexpr void* address() const noexcept { return __handle_; } + + _LIBCPP_HIDE_FROM_ABI + static constexpr coroutine_handle from_address(void* __addr) noexcept { + coroutine_handle __tmp; + __tmp.__handle_ = __addr; + return __tmp; + } + + // [coroutine.handle.observers], observers + _LIBCPP_HIDE_FROM_ABI + constexpr explicit operator bool() const noexcept { + return __handle_ != nullptr; + } + + _LIBCPP_HIDE_FROM_ABI + bool done() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "done() can be called only on suspended coroutines"); + return __builtin_coro_done(__handle_); + } + + // [coroutine.handle.resumption], resumption + _LIBCPP_HIDE_FROM_ABI + void operator()() const { resume(); } + + _LIBCPP_HIDE_FROM_ABI + void resume() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "resume() can be called only on suspended coroutines"); + _LIBCPP_ASSERT_UNCATEGORIZED(!done(), "resume() has undefined behavior when the coroutine is done"); + __builtin_coro_resume(__handle_); + } + + _LIBCPP_HIDE_FROM_ABI + void destroy() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "destroy() can be called only on suspended coroutines"); + __builtin_coro_destroy(__handle_); + } + +private: + _LIBCPP_HIDE_FROM_ABI bool __is_suspended() const { + // FIXME actually implement a check for if the coro is suspended. + return __handle_ != nullptr; + } + + void* __handle_ = nullptr; +}; + +// [coroutine.handle.compare] +inline _LIBCPP_HIDE_FROM_ABI +constexpr bool operator==(coroutine_handle<> __x, coroutine_handle<> __y) noexcept { + return __x.address() == __y.address(); +} +inline _LIBCPP_HIDE_FROM_ABI +constexpr strong_ordering operator<=>(coroutine_handle<> __x, coroutine_handle<> __y) noexcept { + return compare_three_way()(__x.address(), __y.address()); +} + +template +struct _LIBCPP_TEMPLATE_VIS coroutine_handle { +public: + // [coroutine.handle.con], construct/reset + constexpr coroutine_handle() noexcept = default; + + _LIBCPP_HIDE_FROM_ABI + constexpr coroutine_handle(nullptr_t) noexcept {} + + _LIBCPP_HIDE_FROM_ABI + static coroutine_handle from_promise(_Promise& __promise) { + using _RawPromise = __remove_cv_t<_Promise>; + coroutine_handle __tmp; + __tmp.__handle_ = + __builtin_coro_promise(_VSTD::addressof(const_cast<_RawPromise&>(__promise)), alignof(_Promise), true); + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI + coroutine_handle& operator=(nullptr_t) noexcept { + __handle_ = nullptr; + return *this; + } + + // [coroutine.handle.export.import], export/import + _LIBCPP_HIDE_FROM_ABI + constexpr void* address() const noexcept { return __handle_; } + + _LIBCPP_HIDE_FROM_ABI + static constexpr coroutine_handle from_address(void* __addr) noexcept { + coroutine_handle __tmp; + __tmp.__handle_ = __addr; + return __tmp; + } + + // [coroutine.handle.conv], conversion + _LIBCPP_HIDE_FROM_ABI + constexpr operator coroutine_handle<>() const noexcept { + return coroutine_handle<>::from_address(address()); + } + + // [coroutine.handle.observers], observers + _LIBCPP_HIDE_FROM_ABI + constexpr explicit operator bool() const noexcept { + return __handle_ != nullptr; + } + + _LIBCPP_HIDE_FROM_ABI + bool done() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "done() can be called only on suspended coroutines"); + return __builtin_coro_done(__handle_); + } + + // [coroutine.handle.resumption], resumption + _LIBCPP_HIDE_FROM_ABI + void operator()() const { resume(); } + + _LIBCPP_HIDE_FROM_ABI + void resume() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "resume() can be called only on suspended coroutines"); + _LIBCPP_ASSERT_UNCATEGORIZED(!done(), "resume() has undefined behavior when the coroutine is done"); + __builtin_coro_resume(__handle_); + } + + _LIBCPP_HIDE_FROM_ABI + void destroy() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__is_suspended(), "destroy() can be called only on suspended coroutines"); + __builtin_coro_destroy(__handle_); + } + + // [coroutine.handle.promise], promise access + _LIBCPP_HIDE_FROM_ABI + _Promise& promise() const { + return *static_cast<_Promise*>(__builtin_coro_promise(this->__handle_, alignof(_Promise), false)); + } + +private: + _LIBCPP_HIDE_FROM_ABI bool __is_suspended() const { + // FIXME actually implement a check for if the coro is suspended. + return __handle_ != nullptr; + } + void* __handle_ = nullptr; +}; + +// [coroutine.handle.hash] +template +struct hash> { + _LIBCPP_HIDE_FROM_ABI + size_t operator()(const coroutine_handle<_Tp>& __v) const noexcept { return hash()(__v.address()); } +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // __LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___COROUTINE_COROUTINE_HANDLE_H diff --git a/lib/libcxx/include/__coroutine/coroutine_traits.h b/lib/libcxx/include/__coroutine/coroutine_traits.h new file mode 100644 index 0000000..7122cc8 --- /dev/null +++ b/lib/libcxx/include/__coroutine/coroutine_traits.h @@ -0,0 +1,53 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COROUTINE_COROUTINE_TRAITS_H +#define _LIBCPP___COROUTINE_COROUTINE_TRAITS_H + +#include <__config> +#include <__type_traits/void_t.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +// [coroutine.traits] +// [coroutine.traits.primary] +// The header defined the primary template coroutine_traits such that +// if ArgTypes is a parameter pack of types and if the qualified-id R::promise_type +// is valid and denotes a type ([temp.deduct]), then coroutine_traits +// has the following publicly accessible memebr: +// +// using promise_type = typename R::promise_type; +// +// Otherwise, coroutine_traits has no members. +template +struct __coroutine_traits_sfinae {}; + +template +struct __coroutine_traits_sfinae< + _Tp, __void_t > +{ + using promise_type = typename _Tp::promise_type; +}; + +template +struct coroutine_traits + : public __coroutine_traits_sfinae<_Ret> +{ +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // __LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___COROUTINE_COROUTINE_TRAITS_H diff --git a/lib/libcxx/include/__coroutine/noop_coroutine_handle.h b/lib/libcxx/include/__coroutine/noop_coroutine_handle.h new file mode 100644 index 0000000..9b7802d --- /dev/null +++ b/lib/libcxx/include/__coroutine/noop_coroutine_handle.h @@ -0,0 +1,112 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___COROUTINE_NOOP_COROUTINE_HANDLE_H +#define _LIBCPP___COROUTINE_NOOP_COROUTINE_HANDLE_H + +#include <__config> +#include <__coroutine/coroutine_handle.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if __has_builtin(__builtin_coro_noop) || defined(_LIBCPP_COMPILER_GCC) + +// [coroutine.noop] +// [coroutine.promise.noop] +struct noop_coroutine_promise {}; + +// [coroutine.handle.noop] +template <> +struct _LIBCPP_TEMPLATE_VIS coroutine_handle { +public: + // [coroutine.handle.noop.conv], conversion + _LIBCPP_HIDE_FROM_ABI + constexpr operator coroutine_handle<>() const noexcept { + return coroutine_handle<>::from_address(address()); + } + + // [coroutine.handle.noop.observers], observers + _LIBCPP_HIDE_FROM_ABI + constexpr explicit operator bool() const noexcept { return true; } + _LIBCPP_HIDE_FROM_ABI + constexpr bool done() const noexcept { return false; } + + // [coroutine.handle.noop.resumption], resumption + _LIBCPP_HIDE_FROM_ABI + constexpr void operator()() const noexcept {} + _LIBCPP_HIDE_FROM_ABI + constexpr void resume() const noexcept {} + _LIBCPP_HIDE_FROM_ABI + constexpr void destroy() const noexcept {} + + // [coroutine.handle.noop.promise], promise access + _LIBCPP_HIDE_FROM_ABI + noop_coroutine_promise& promise() const noexcept { + return *static_cast( + __builtin_coro_promise(this->__handle_, alignof(noop_coroutine_promise), false)); + } + + // [coroutine.handle.noop.address], address + _LIBCPP_HIDE_FROM_ABI + constexpr void* address() const noexcept { return __handle_; } + +private: + _LIBCPP_HIDE_FROM_ABI + friend coroutine_handle noop_coroutine() noexcept; + +#if __has_builtin(__builtin_coro_noop) + _LIBCPP_HIDE_FROM_ABI coroutine_handle() noexcept { + this->__handle_ = __builtin_coro_noop(); + } + + void* __handle_ = nullptr; + +#elif defined(_LIBCPP_COMPILER_GCC) + // GCC doesn't implement __builtin_coro_noop(). + // Construct the coroutine frame manually instead. + struct __noop_coroutine_frame_ty_ { + static void __dummy_resume_destroy_func() { } + + void (*__resume_)() = __dummy_resume_destroy_func; + void (*__destroy_)() = __dummy_resume_destroy_func; + struct noop_coroutine_promise __promise_; + }; + + static __noop_coroutine_frame_ty_ __noop_coroutine_frame_; + + void* __handle_ = &__noop_coroutine_frame_; + + _LIBCPP_HIDE_FROM_ABI coroutine_handle() noexcept = default; + +#endif // __has_builtin(__builtin_coro_noop) +}; + +using noop_coroutine_handle = coroutine_handle; + +#if defined(_LIBCPP_COMPILER_GCC) +inline noop_coroutine_handle::__noop_coroutine_frame_ty_ + noop_coroutine_handle::__noop_coroutine_frame_{}; +#endif + +// [coroutine.noop.coroutine] +inline _LIBCPP_HIDE_FROM_ABI +noop_coroutine_handle noop_coroutine() noexcept { return noop_coroutine_handle(); } + +#endif // __has_builtin(__builtin_coro_noop) || defined(_LIBCPP_COMPILER_GCC) + +_LIBCPP_END_NAMESPACE_STD + +#endif // __LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___COROUTINE_NOOP_COROUTINE_HANDLE_H diff --git a/lib/libcxx/include/__coroutine/trivial_awaitables.h b/lib/libcxx/include/__coroutine/trivial_awaitables.h new file mode 100644 index 0000000..0e4b08e --- /dev/null +++ b/lib/libcxx/include/__coroutine/trivial_awaitables.h @@ -0,0 +1,46 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef __LIBCPP___COROUTINE_TRIVIAL_AWAITABLES_H +#define __LIBCPP___COROUTINE_TRIVIAL_AWAITABLES_H + +#include <__config> +#include <__coroutine/coroutine_handle.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +// [coroutine.trivial.awaitables] +struct suspend_never { + _LIBCPP_HIDE_FROM_ABI + constexpr bool await_ready() const noexcept { return true; } + _LIBCPP_HIDE_FROM_ABI + constexpr void await_suspend(coroutine_handle<>) const noexcept {} + _LIBCPP_HIDE_FROM_ABI + constexpr void await_resume() const noexcept {} +}; + +struct suspend_always { + _LIBCPP_HIDE_FROM_ABI + constexpr bool await_ready() const noexcept { return false; } + _LIBCPP_HIDE_FROM_ABI + constexpr void await_suspend(coroutine_handle<>) const noexcept {} + _LIBCPP_HIDE_FROM_ABI + constexpr void await_resume() const noexcept {} +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // __LIBCPP_STD_VER >= 20 + +#endif // __LIBCPP___COROUTINE_TRIVIAL_AWAITABLES_H diff --git a/lib/libcxx/include/__debug_utils/randomize_range.h b/lib/libcxx/include/__debug_utils/randomize_range.h new file mode 100644 index 0000000..dce6192 --- /dev/null +++ b/lib/libcxx/include/__debug_utils/randomize_range.h @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H +#define _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H + +#include <__config> + +#ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY +# include <__algorithm/shuffle.h> +# include <__type_traits/is_constant_evaluated.h> +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 +void __debug_randomize_range(_Iterator __first, _Sentinel __last) { +#ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY +# ifdef _LIBCPP_CXX03_LANG +# error Support for unspecified stability is only for C++11 and higher +# endif + + if (!__libcpp_is_constant_evaluated()) + std::__shuffle<_AlgPolicy>(__first, __last, __libcpp_debug_randomizer()); +#else + (void)__first; + (void)__last; +#endif +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H diff --git a/lib/libcxx/include/__debug_utils/strict_weak_ordering_check.h b/lib/libcxx/include/__debug_utils/strict_weak_ordering_check.h new file mode 100644 index 0000000..99200ad --- /dev/null +++ b/lib/libcxx/include/__debug_utils/strict_weak_ordering_check.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___LIBCXX_DEBUG_STRICT_WEAK_ORDERING_CHECK +#define _LIBCPP___LIBCXX_DEBUG_STRICT_WEAK_ORDERING_CHECK + +#include <__config> + +#include <__algorithm/comp_ref_type.h> +#include <__algorithm/is_sorted.h> +#include <__assert> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_constant_evaluated.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void +__check_strict_weak_ordering_sorted(_RandomAccessIterator __first, _RandomAccessIterator __last, _Comp& __comp) { +#ifdef _LIBCPP_DEBUG_STRICT_WEAK_ORDERING_CHECK + using __diff_t = __iter_diff_t<_RandomAccessIterator>; + using _Comp_ref = __comp_ref_type<_Comp>; + if (!__libcpp_is_constant_evaluated()) { + // Check if the range is actually sorted. + _LIBCPP_ASSERT_UNCATEGORIZED( + (std::is_sorted<_RandomAccessIterator, _Comp_ref>(__first, __last, _Comp_ref(__comp))), + "The range is not sorted after the sort, your comparator is not a valid strict-weak ordering"); + // Limit the number of elements we need to check. + __diff_t __size = __last - __first > __diff_t(100) ? __diff_t(100) : __last - __first; + __diff_t __p = 0; + while (__p < __size) { + __diff_t __q = __p + __diff_t(1); + // Find first element that is greater than *(__first+__p). + while (__q < __size && !__comp(*(__first + __p), *(__first + __q))) { + ++__q; + } + // Check that the elements from __p to __q are equal between each other. + for (__diff_t __b = __p; __b < __q; ++__b) { + for (__diff_t __a = __p; __a <= __b; ++__a) { + _LIBCPP_ASSERT_UNCATEGORIZED( + !__comp(*(__first + __a), *(__first + __b)), "Your comparator is not a valid strict-weak ordering"); + _LIBCPP_ASSERT_UNCATEGORIZED( + !__comp(*(__first + __b), *(__first + __a)), "Your comparator is not a valid strict-weak ordering"); + } + } + // Check that elements between __p and __q are less than between __q and __size. + for (__diff_t __a = __p; __a < __q; ++__a) { + for (__diff_t __b = __q; __b < __size; ++__b) { + _LIBCPP_ASSERT_UNCATEGORIZED( + __comp(*(__first + __a), *(__first + __b)), "Your comparator is not a valid strict-weak ordering"); + _LIBCPP_ASSERT_UNCATEGORIZED( + !__comp(*(__first + __b), *(__first + __a)), "Your comparator is not a valid strict-weak ordering"); + } + } + // Skip these equal elements. + __p = __q; + } + } +#else + (void)__first; + (void)__last; + (void)__comp; +#endif +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___LIBCXX_DEBUG_STRICT_WEAK_ORDERING_CHECK diff --git a/lib/libcxx/include/__exception/exception.h b/lib/libcxx/include/__exception/exception.h new file mode 100644 index 0000000..3db0126 --- /dev/null +++ b/lib/libcxx/include/__exception/exception.h @@ -0,0 +1,91 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___EXCEPTION_EXCEPTION_H +#define _LIBCPP___EXCEPTION_EXCEPTION_H + +#include <__config> + +// defines its own std::exception and std::bad_exception types, +// which we use in order to be ABI-compatible with other STLs on Windows. +#if defined(_LIBCPP_ABI_VCRUNTIME) +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +namespace std { // purposefully not using versioning namespace + +#if defined(_LIBCPP_ABI_VCRUNTIME) && (!defined(_HAS_EXCEPTIONS) || _HAS_EXCEPTIONS != 0) +// The std::exception class was already included above, but we're explicit about this condition here for clarity. + +#elif defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0 +// However, does not define std::exception and std::bad_exception +// when _HAS_EXCEPTIONS == 0. +// +// Since libc++ still wants to provide the std::exception hierarchy even when _HAS_EXCEPTIONS == 0 +// (after all those are simply types like any other), we define an ABI-compatible version +// of the VCRuntime std::exception and std::bad_exception types in that mode. + +struct __std_exception_data { + char const* _What; + bool _DoFree; +}; + +class exception { // base of all library exceptions +public: + exception() _NOEXCEPT : __data_() {} + + explicit exception(char const* __message) _NOEXCEPT : __data_() { + __data_._What = __message; + __data_._DoFree = true; + } + + exception(exception const&) _NOEXCEPT {} + + exception& operator=(exception const&) _NOEXCEPT { return *this; } + + virtual ~exception() _NOEXCEPT {} + + virtual char const* what() const _NOEXCEPT { return __data_._What ? __data_._What : "Unknown exception"; } + +private: + __std_exception_data __data_; +}; + +class bad_exception : public exception { +public: + bad_exception() _NOEXCEPT : exception("bad exception") {} +}; + +#else // !defined(_LIBCPP_ABI_VCRUNTIME) +// On all other platforms, we define our own std::exception and std::bad_exception types +// regardless of whether exceptions are turned on as a language feature. + +class _LIBCPP_EXPORTED_FROM_ABI exception { +public: + _LIBCPP_HIDE_FROM_ABI exception() _NOEXCEPT {} + _LIBCPP_HIDE_FROM_ABI exception(const exception&) _NOEXCEPT = default; + + virtual ~exception() _NOEXCEPT; + virtual const char* what() const _NOEXCEPT; +}; + +class _LIBCPP_EXPORTED_FROM_ABI bad_exception : public exception { +public: + _LIBCPP_HIDE_FROM_ABI bad_exception() _NOEXCEPT {} + ~bad_exception() _NOEXCEPT override; + const char* what() const _NOEXCEPT override; +}; +#endif // !_LIBCPP_ABI_VCRUNTIME + +} // namespace std + +#endif // _LIBCPP___EXCEPTION_EXCEPTION_H diff --git a/lib/libcxx/include/__exception/exception_ptr.h b/lib/libcxx/include/__exception/exception_ptr.h new file mode 100644 index 0000000..970d819 --- /dev/null +++ b/lib/libcxx/include/__exception/exception_ptr.h @@ -0,0 +1,109 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___EXCEPTION_EXCEPTION_PTR_H +#define _LIBCPP___EXCEPTION_EXCEPTION_PTR_H + +#include <__config> +#include <__exception/operations.h> +#include <__memory/addressof.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +namespace std { // purposefully not using versioning namespace + +#ifndef _LIBCPP_ABI_MICROSOFT + +class _LIBCPP_EXPORTED_FROM_ABI exception_ptr { + void* __ptr_; + +public: + _LIBCPP_HIDE_FROM_ABI exception_ptr() _NOEXCEPT : __ptr_() {} + _LIBCPP_HIDE_FROM_ABI exception_ptr(nullptr_t) _NOEXCEPT : __ptr_() {} + + exception_ptr(const exception_ptr&) _NOEXCEPT; + exception_ptr& operator=(const exception_ptr&) _NOEXCEPT; + ~exception_ptr() _NOEXCEPT; + + _LIBCPP_HIDE_FROM_ABI explicit operator bool() const _NOEXCEPT { return __ptr_ != nullptr; } + + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT { + return __x.__ptr_ == __y.__ptr_; + } + + friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT { + return !(__x == __y); + } + + friend _LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT; + friend _LIBCPP_EXPORTED_FROM_ABI void rethrow_exception(exception_ptr); +}; + +template +_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT { +# ifndef _LIBCPP_HAS_NO_EXCEPTIONS + try { + throw __e; + } catch (...) { + return current_exception(); + } +# else + ((void)__e); + std::abort(); +# endif +} + +#else // _LIBCPP_ABI_MICROSOFT + +class _LIBCPP_EXPORTED_FROM_ABI exception_ptr { + _LIBCPP_DIAGNOSTIC_PUSH + _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wunused-private-field") + void* __ptr1_; + void* __ptr2_; + _LIBCPP_DIAGNOSTIC_POP + +public: + exception_ptr() _NOEXCEPT; + exception_ptr(nullptr_t) _NOEXCEPT; + exception_ptr(const exception_ptr& __other) _NOEXCEPT; + exception_ptr& operator=(const exception_ptr& __other) _NOEXCEPT; + exception_ptr& operator=(nullptr_t) _NOEXCEPT; + ~exception_ptr() _NOEXCEPT; + explicit operator bool() const _NOEXCEPT; +}; + +_LIBCPP_EXPORTED_FROM_ABI bool operator==(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT; + +inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT { + return !(__x == __y); +} + +_LIBCPP_EXPORTED_FROM_ABI void swap(exception_ptr&, exception_ptr&) _NOEXCEPT; + +_LIBCPP_EXPORTED_FROM_ABI exception_ptr __copy_exception_ptr(void* __except, const void* __ptr); +_LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT; +_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void rethrow_exception(exception_ptr); + +// This is a built-in template function which automagically extracts the required +// information. +template +void* __GetExceptionInfo(_E); + +template +_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT { + return __copy_exception_ptr(std::addressof(__e), __GetExceptionInfo(__e)); +} + +#endif // _LIBCPP_ABI_MICROSOFT +} // namespace std + +#endif // _LIBCPP___EXCEPTION_EXCEPTION_PTR_H diff --git a/lib/libcxx/include/__exception/nested_exception.h b/lib/libcxx/include/__exception/nested_exception.h new file mode 100644 index 0000000..1136c92 --- /dev/null +++ b/lib/libcxx/include/__exception/nested_exception.h @@ -0,0 +1,101 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___EXCEPTION_NESTED_EXCEPTION_H +#define _LIBCPP___EXCEPTION_NESTED_EXCEPTION_H + +#include <__config> +#include <__exception/exception_ptr.h> +#include <__memory/addressof.h> +#include <__type_traits/decay.h> +#include <__type_traits/is_base_of.h> +#include <__type_traits/is_class.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_final.h> +#include <__type_traits/is_polymorphic.h> +#include <__utility/forward.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +namespace std { // purposefully not using versioning namespace + +class _LIBCPP_EXPORTED_FROM_ABI nested_exception { + exception_ptr __ptr_; + +public: + nested_exception() _NOEXCEPT; + // nested_exception(const nested_exception&) noexcept = default; + // nested_exception& operator=(const nested_exception&) noexcept = default; + virtual ~nested_exception() _NOEXCEPT; + + // access functions + _LIBCPP_NORETURN void rethrow_nested() const; + _LIBCPP_HIDE_FROM_ABI exception_ptr nested_ptr() const _NOEXCEPT { return __ptr_; } +}; + +template +struct __nested : public _Tp, public nested_exception { + _LIBCPP_HIDE_FROM_ABI explicit __nested(const _Tp& __t) : _Tp(__t) {} +}; + +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS +template +struct __throw_with_nested; + +template +struct __throw_with_nested<_Tp, _Up, true> { + _LIBCPP_NORETURN static inline _LIBCPP_INLINE_VISIBILITY void __do_throw(_Tp&& __t) { + throw __nested<_Up>(std::forward<_Tp>(__t)); + } +}; + +template +struct __throw_with_nested<_Tp, _Up, false> { + _LIBCPP_NORETURN static inline _LIBCPP_INLINE_VISIBILITY void __do_throw(_Tp&& __t) { throw std::forward<_Tp>(__t); } +}; +#endif + +template +_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI void throw_with_nested(_Tp&& __t) { +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + using _Up = __decay_t<_Tp>; + static_assert(is_copy_constructible<_Up>::value, "type thrown must be CopyConstructible"); + __throw_with_nested<_Tp, + _Up, + is_class<_Up>::value && !is_base_of::value && + !__libcpp_is_final<_Up>::value>::__do_throw(std::forward<_Tp>(__t)); +#else + ((void)__t); + // FIXME: Make this abort +#endif +} + +template +struct __can_dynamic_cast + : _BoolConstant< is_polymorphic<_From>::value && + (!is_base_of<_To, _From>::value || is_convertible::value)> {}; + +template +inline _LIBCPP_HIDE_FROM_ABI void +rethrow_if_nested(const _Ep& __e, __enable_if_t< __can_dynamic_cast<_Ep, nested_exception>::value>* = 0) { + const nested_exception* __nep = dynamic_cast(std::addressof(__e)); + if (__nep) + __nep->rethrow_nested(); +} + +template +inline _LIBCPP_HIDE_FROM_ABI void +rethrow_if_nested(const _Ep&, __enable_if_t::value>* = 0) {} + +} // namespace std + +#endif // _LIBCPP___EXCEPTION_NESTED_EXCEPTION_H diff --git a/lib/libcxx/include/__exception/operations.h b/lib/libcxx/include/__exception/operations.h new file mode 100644 index 0000000..78e7c7a --- /dev/null +++ b/lib/libcxx/include/__exception/operations.h @@ -0,0 +1,42 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___EXCEPTION_OPERATIONS_H +#define _LIBCPP___EXCEPTION_OPERATIONS_H + +#include <__availability> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +namespace std { // purposefully not using versioning namespace +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS) || \ + defined(_LIBCPP_BUILDING_LIBRARY) +using unexpected_handler = void (*)(); +_LIBCPP_EXPORTED_FROM_ABI unexpected_handler set_unexpected(unexpected_handler) _NOEXCEPT; +_LIBCPP_EXPORTED_FROM_ABI unexpected_handler get_unexpected() _NOEXCEPT; +_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void unexpected(); +#endif + +using terminate_handler = void (*)(); +_LIBCPP_EXPORTED_FROM_ABI terminate_handler set_terminate(terminate_handler) _NOEXCEPT; +_LIBCPP_EXPORTED_FROM_ABI terminate_handler get_terminate() _NOEXCEPT; + +_LIBCPP_EXPORTED_FROM_ABI bool uncaught_exception() _NOEXCEPT; +_LIBCPP_EXPORTED_FROM_ABI _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS int uncaught_exceptions() _NOEXCEPT; + +class _LIBCPP_EXPORTED_FROM_ABI exception_ptr; + +_LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT; +_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void rethrow_exception(exception_ptr); +} // namespace std + +#endif // _LIBCPP___EXCEPTION_OPERATIONS_H diff --git a/lib/libcxx/include/__exception/terminate.h b/lib/libcxx/include/__exception/terminate.h new file mode 100644 index 0000000..e672471 --- /dev/null +++ b/lib/libcxx/include/__exception/terminate.h @@ -0,0 +1,22 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___EXCEPTION_TERMINATE_H +#define _LIBCPP___EXCEPTION_TERMINATE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +namespace std { // purposefully not using versioning namespace +_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void terminate() _NOEXCEPT; +} // namespace std + +#endif // _LIBCPP___EXCEPTION_TERMINATE_H diff --git a/lib/libcxx/include/__expected/bad_expected_access.h b/lib/libcxx/include/__expected/bad_expected_access.h new file mode 100644 index 0000000..27f01d9 --- /dev/null +++ b/lib/libcxx/include/__expected/bad_expected_access.h @@ -0,0 +1,68 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +#ifndef _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H +#define _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H + +#include <__config> +#include <__exception/exception.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class bad_expected_access; + +template <> +class bad_expected_access : public exception { +protected: + _LIBCPP_HIDE_FROM_ABI bad_expected_access() noexcept = default; + _LIBCPP_HIDE_FROM_ABI bad_expected_access(const bad_expected_access&) = default; + _LIBCPP_HIDE_FROM_ABI bad_expected_access(bad_expected_access&&) = default; + _LIBCPP_HIDE_FROM_ABI bad_expected_access& operator=(const bad_expected_access&) = default; + _LIBCPP_HIDE_FROM_ABI bad_expected_access& operator=(bad_expected_access&&) = default; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL ~bad_expected_access() override = default; + +public: + // The way this has been designed (by using a class template below) means that we'll already + // have a profusion of these vtables in TUs, and the dynamic linker will already have a bunch + // of work to do. So it is not worth hiding the specialization in the dylib, given that + // it adds deployment target restrictions. + _LIBCPP_HIDE_FROM_ABI_VIRTUAL const char* what() const noexcept override { return "bad access to std::expected"; } +}; + +template +class bad_expected_access : public bad_expected_access { +public: + _LIBCPP_HIDE_FROM_ABI explicit bad_expected_access(_Err __e) : __unex_(std::move(__e)) {} + + _LIBCPP_HIDE_FROM_ABI _Err& error() & noexcept { return __unex_; } + _LIBCPP_HIDE_FROM_ABI const _Err& error() const& noexcept { return __unex_; } + _LIBCPP_HIDE_FROM_ABI _Err&& error() && noexcept { return std::move(__unex_); } + _LIBCPP_HIDE_FROM_ABI const _Err&& error() const&& noexcept { return std::move(__unex_); } + +private: + _Err __unex_; +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H diff --git a/lib/libcxx/include/__expected/expected.h b/lib/libcxx/include/__expected/expected.h new file mode 100644 index 0000000..7d57aa4 --- /dev/null +++ b/lib/libcxx/include/__expected/expected.h @@ -0,0 +1,1560 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +#ifndef _LIBCPP___EXPECTED_EXPECTED_H +#define _LIBCPP___EXPECTED_EXPECTED_H + +#include <__assert> +#include <__config> +#include <__expected/bad_expected_access.h> +#include <__expected/unexpect.h> +#include <__expected/unexpected.h> +#include <__functional/invoke.h> +#include <__memory/addressof.h> +#include <__memory/construct_at.h> +#include <__type_traits/conjunction.h> +#include <__type_traits/disjunction.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_assignable.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_default_constructible.h> +#include <__type_traits/is_function.h> +#include <__type_traits/is_move_assignable.h> +#include <__type_traits/is_move_constructible.h> +#include <__type_traits/is_nothrow_constructible.h> +#include <__type_traits/is_nothrow_copy_assignable.h> +#include <__type_traits/is_nothrow_copy_constructible.h> +#include <__type_traits/is_nothrow_default_constructible.h> +#include <__type_traits/is_nothrow_move_assignable.h> +#include <__type_traits/is_nothrow_move_constructible.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_same.h> +#include <__type_traits/is_swappable.h> +#include <__type_traits/is_trivially_copy_constructible.h> +#include <__type_traits/is_trivially_destructible.h> +#include <__type_traits/is_trivially_move_constructible.h> +#include <__type_traits/is_void.h> +#include <__type_traits/lazy.h> +#include <__type_traits/negation.h> +#include <__type_traits/remove_cv.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/as_const.h> +#include <__utility/exception_guard.h> +#include <__utility/forward.h> +#include <__utility/in_place.h> +#include <__utility/move.h> +#include <__utility/swap.h> +#include <__verbose_abort> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class expected; + +template +struct __is_std_expected : false_type {}; + +template +struct __is_std_expected> : true_type {}; + +struct __expected_construct_in_place_from_invoke_tag {}; +struct __expected_construct_unexpected_from_invoke_tag {}; + +template +_LIBCPP_HIDE_FROM_ABI void __throw_bad_expected_access(_Arg&& __arg) { +# ifndef _LIBCPP_HAS_NO_EXCEPTIONS + throw bad_expected_access<_Err>(std::forward<_Arg>(__arg)); +# else + (void)__arg; + _LIBCPP_VERBOSE_ABORT("bad_expected_access was thrown in -fno-exceptions mode"); +# endif +} + +template +class expected { + static_assert( + !is_reference_v<_Tp> && + !is_function_v<_Tp> && + !is_same_v, in_place_t> && + !is_same_v, unexpect_t> && + !__is_std_unexpected>::value && + __valid_std_unexpected<_Err>::value + , + "[expected.object.general] A program that instantiates the definition of template expected for a " + "reference type, a function type, or for possibly cv-qualified types in_place_t, unexpect_t, or a " + "specialization of unexpected for the T parameter is ill-formed. A program that instantiates the " + "definition of the template expected with a type for the E parameter that is not a valid " + "template argument for unexpected is ill-formed."); + + template + friend class expected; + +public: + using value_type = _Tp; + using error_type = _Err; + using unexpected_type = unexpected<_Err>; + + template + using rebind = expected<_Up, error_type>; + + // [expected.object.ctor], constructors + _LIBCPP_HIDE_FROM_ABI constexpr expected() + noexcept(is_nothrow_default_constructible_v<_Tp>) // strengthened + requires is_default_constructible_v<_Tp> + : __has_val_(true) { + std::construct_at(std::addressof(__union_.__val_)); + } + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected&) + requires(is_copy_constructible_v<_Tp> && + is_copy_constructible_v<_Err> && + is_trivially_copy_constructible_v<_Tp> && + is_trivially_copy_constructible_v<_Err>) + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected& __other) + noexcept(is_nothrow_copy_constructible_v<_Tp> && is_nothrow_copy_constructible_v<_Err>) // strengthened + requires(is_copy_constructible_v<_Tp> && is_copy_constructible_v<_Err> && + !(is_trivially_copy_constructible_v<_Tp> && is_trivially_copy_constructible_v<_Err>)) + : __has_val_(__other.__has_val_) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__val_), __other.__union_.__val_); + } else { + std::construct_at(std::addressof(__union_.__unex_), __other.__union_.__unex_); + } + } + + + _LIBCPP_HIDE_FROM_ABI constexpr expected(expected&&) + requires(is_move_constructible_v<_Tp> && is_move_constructible_v<_Err> + && is_trivially_move_constructible_v<_Tp> && is_trivially_move_constructible_v<_Err>) + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(expected&& __other) + noexcept(is_nothrow_move_constructible_v<_Tp> && is_nothrow_move_constructible_v<_Err>) + requires(is_move_constructible_v<_Tp> && is_move_constructible_v<_Err> && + !(is_trivially_move_constructible_v<_Tp> && is_trivially_move_constructible_v<_Err>)) + : __has_val_(__other.__has_val_) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__val_), std::move(__other.__union_.__val_)); + } else { + std::construct_at(std::addressof(__union_.__unex_), std::move(__other.__union_.__unex_)); + } + } + +private: + template + using __can_convert = + _And< is_constructible<_Tp, _UfQual>, + is_constructible<_Err, _OtherErrQual>, + _Not&>>, + _Not>>, + _Not&>>, + _Not>>, + _Not&, _Tp>>, + _Not&&, _Tp>>, + _Not&, _Tp>>, + _Not&&, _Tp>>, + _Not, expected<_Up, _OtherErr>&>>, + _Not, expected<_Up, _OtherErr>>>, + _Not, const expected<_Up, _OtherErr>&>>, + _Not, const expected<_Up, _OtherErr>>> >; + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected( + std::__expected_construct_in_place_from_invoke_tag __tag, _Func&& __f, _Args&&... __args) + : __union_(__tag, std::forward<_Func>(__f), std::forward<_Args>(__args)...), __has_val_(true) {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected( + std::__expected_construct_unexpected_from_invoke_tag __tag, _Func&& __f, _Args&&... __args) + : __union_(__tag, std::forward<_Func>(__f), std::forward<_Args>(__args)...), __has_val_(false) {} + +public: + template + requires __can_convert<_Up, _OtherErr, const _Up&, const _OtherErr&>::value + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v || + !is_convertible_v) + expected(const expected<_Up, _OtherErr>& __other) + noexcept(is_nothrow_constructible_v<_Tp, const _Up&> && + is_nothrow_constructible_v<_Err, const _OtherErr&>) // strengthened + : __has_val_(__other.__has_val_) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__val_), __other.__union_.__val_); + } else { + std::construct_at(std::addressof(__union_.__unex_), __other.__union_.__unex_); + } + } + + template + requires __can_convert<_Up, _OtherErr, _Up, _OtherErr>::value + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v<_Up, _Tp> || !is_convertible_v<_OtherErr, _Err>) + expected(expected<_Up, _OtherErr>&& __other) + noexcept(is_nothrow_constructible_v<_Tp, _Up> && is_nothrow_constructible_v<_Err, _OtherErr>) // strengthened + : __has_val_(__other.__has_val_) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__val_), std::move(__other.__union_.__val_)); + } else { + std::construct_at(std::addressof(__union_.__unex_), std::move(__other.__union_.__unex_)); + } + } + + template + requires(!is_same_v, in_place_t> && !is_same_v> && + !__is_std_unexpected>::value && is_constructible_v<_Tp, _Up>) + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v<_Up, _Tp>) + expected(_Up&& __u) + noexcept(is_nothrow_constructible_v<_Tp, _Up>) // strengthened + : __has_val_(true) { + std::construct_at(std::addressof(__union_.__val_), std::forward<_Up>(__u)); + } + + + template + requires is_constructible_v<_Err, const _OtherErr&> + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v) + expected(const unexpected<_OtherErr>& __unex) + noexcept(is_nothrow_constructible_v<_Err, const _OtherErr&>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), __unex.error()); + } + + template + requires is_constructible_v<_Err, _OtherErr> + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v<_OtherErr, _Err>) + expected(unexpected<_OtherErr>&& __unex) + noexcept(is_nothrow_constructible_v<_Err, _OtherErr>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__unex.error())); + } + + template + requires is_constructible_v<_Tp, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(in_place_t, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Tp, _Args...>) // strengthened + : __has_val_(true) { + std::construct_at(std::addressof(__union_.__val_), std::forward<_Args>(__args)...); + } + + template + requires is_constructible_v< _Tp, initializer_list<_Up>&, _Args... > + _LIBCPP_HIDE_FROM_ABI constexpr explicit + expected(in_place_t, initializer_list<_Up> __il, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Tp, initializer_list<_Up>&, _Args...>) // strengthened + : __has_val_(true) { + std::construct_at(std::addressof(__union_.__val_), __il, std::forward<_Args>(__args)...); + } + + template + requires is_constructible_v<_Err, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(unexpect_t, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Err, _Args...>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), std::forward<_Args>(__args)...); + } + + template + requires is_constructible_v< _Err, initializer_list<_Up>&, _Args... > + _LIBCPP_HIDE_FROM_ABI constexpr explicit + expected(unexpect_t, initializer_list<_Up> __il, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Err, initializer_list<_Up>&, _Args...>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), __il, std::forward<_Args>(__args)...); + } + + // [expected.object.dtor], destructor + + _LIBCPP_HIDE_FROM_ABI constexpr ~expected() + requires(is_trivially_destructible_v<_Tp> && is_trivially_destructible_v<_Err>) + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr ~expected() + requires(!is_trivially_destructible_v<_Tp> || !is_trivially_destructible_v<_Err>) + { + if (__has_val_) { + std::destroy_at(std::addressof(__union_.__val_)); + } else { + std::destroy_at(std::addressof(__union_.__unex_)); + } + } + +private: + template + _LIBCPP_HIDE_FROM_ABI static constexpr void __reinit_expected(_T1& __newval, _T2& __oldval, _Args&&... __args) { + if constexpr (is_nothrow_constructible_v<_T1, _Args...>) { + std::destroy_at(std::addressof(__oldval)); + std::construct_at(std::addressof(__newval), std::forward<_Args>(__args)...); + } else if constexpr (is_nothrow_move_constructible_v<_T1>) { + _T1 __tmp(std::forward<_Args>(__args)...); + std::destroy_at(std::addressof(__oldval)); + std::construct_at(std::addressof(__newval), std::move(__tmp)); + } else { + static_assert( + is_nothrow_move_constructible_v<_T2>, + "To provide strong exception guarantee, T2 has to satisfy `is_nothrow_move_constructible_v` so that it can " + "be reverted to the previous state in case an exception is thrown during the assignment."); + _T2 __tmp(std::move(__oldval)); + std::destroy_at(std::addressof(__oldval)); + auto __trans = + std::__make_exception_guard([&] { std::construct_at(std::addressof(__oldval), std::move(__tmp)); }); + std::construct_at(std::addressof(__newval), std::forward<_Args>(__args)...); + __trans.__complete(); + } + } + +public: + // [expected.object.assign], assignment + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const expected&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const expected& __rhs) + noexcept(is_nothrow_copy_assignable_v<_Tp> && + is_nothrow_copy_constructible_v<_Tp> && + is_nothrow_copy_assignable_v<_Err> && + is_nothrow_copy_constructible_v<_Err>) // strengthened + requires(is_copy_assignable_v<_Tp> && + is_copy_constructible_v<_Tp> && + is_copy_assignable_v<_Err> && + is_copy_constructible_v<_Err> && + (is_nothrow_move_constructible_v<_Tp> || + is_nothrow_move_constructible_v<_Err>)) + { + if (__has_val_ && __rhs.__has_val_) { + __union_.__val_ = __rhs.__union_.__val_; + } else if (__has_val_) { + __reinit_expected(__union_.__unex_, __union_.__val_, __rhs.__union_.__unex_); + } else if (__rhs.__has_val_) { + __reinit_expected(__union_.__val_, __union_.__unex_, __rhs.__union_.__val_); + } else { + __union_.__unex_ = __rhs.__union_.__unex_; + } + // note: only reached if no exception+rollback was done inside __reinit_expected + __has_val_ = __rhs.__has_val_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(expected&& __rhs) + noexcept(is_nothrow_move_assignable_v<_Tp> && + is_nothrow_move_constructible_v<_Tp> && + is_nothrow_move_assignable_v<_Err> && + is_nothrow_move_constructible_v<_Err>) + requires(is_move_constructible_v<_Tp> && + is_move_assignable_v<_Tp> && + is_move_constructible_v<_Err> && + is_move_assignable_v<_Err> && + (is_nothrow_move_constructible_v<_Tp> || + is_nothrow_move_constructible_v<_Err>)) + { + if (__has_val_ && __rhs.__has_val_) { + __union_.__val_ = std::move(__rhs.__union_.__val_); + } else if (__has_val_) { + __reinit_expected(__union_.__unex_, __union_.__val_, std::move(__rhs.__union_.__unex_)); + } else if (__rhs.__has_val_) { + __reinit_expected(__union_.__val_, __union_.__unex_, std::move(__rhs.__union_.__val_)); + } else { + __union_.__unex_ = std::move(__rhs.__union_.__unex_); + } + // note: only reached if no exception+rollback was done inside __reinit_expected + __has_val_ = __rhs.__has_val_; + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(_Up&& __v) + requires(!is_same_v> && + !__is_std_unexpected>::value && + is_constructible_v<_Tp, _Up> && + is_assignable_v<_Tp&, _Up> && + (is_nothrow_constructible_v<_Tp, _Up> || + is_nothrow_move_constructible_v<_Tp> || + is_nothrow_move_constructible_v<_Err>)) + { + if (__has_val_) { + __union_.__val_ = std::forward<_Up>(__v); + } else { + __reinit_expected(__union_.__val_, __union_.__unex_, std::forward<_Up>(__v)); + __has_val_ = true; + } + return *this; + } + +private: + template + static constexpr bool __can_assign_from_unexpected = + _And< is_constructible<_Err, _OtherErrQual>, + is_assignable<_Err&, _OtherErrQual>, + _Lazy<_Or, + is_nothrow_constructible<_Err, _OtherErrQual>, + is_nothrow_move_constructible<_Tp>, + is_nothrow_move_constructible<_Err>> >::value; + +public: + template + requires(__can_assign_from_unexpected) + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const unexpected<_OtherErr>& __un) { + if (__has_val_) { + __reinit_expected(__union_.__unex_, __union_.__val_, __un.error()); + __has_val_ = false; + } else { + __union_.__unex_ = __un.error(); + } + return *this; + } + + template + requires(__can_assign_from_unexpected<_OtherErr>) + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(unexpected<_OtherErr>&& __un) { + if (__has_val_) { + __reinit_expected(__union_.__unex_, __union_.__val_, std::move(__un.error())); + __has_val_ = false; + } else { + __union_.__unex_ = std::move(__un.error()); + } + return *this; + } + + template + requires is_nothrow_constructible_v<_Tp, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(_Args&&... __args) noexcept { + if (__has_val_) { + std::destroy_at(std::addressof(__union_.__val_)); + } else { + std::destroy_at(std::addressof(__union_.__unex_)); + __has_val_ = true; + } + return *std::construct_at(std::addressof(__union_.__val_), std::forward<_Args>(__args)...); + } + + template + requires is_nothrow_constructible_v< _Tp, initializer_list<_Up>&, _Args... > + _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(initializer_list<_Up> __il, _Args&&... __args) noexcept { + if (__has_val_) { + std::destroy_at(std::addressof(__union_.__val_)); + } else { + std::destroy_at(std::addressof(__union_.__unex_)); + __has_val_ = true; + } + return *std::construct_at(std::addressof(__union_.__val_), __il, std::forward<_Args>(__args)...); + } + + +public: + // [expected.object.swap], swap + _LIBCPP_HIDE_FROM_ABI constexpr void swap(expected& __rhs) + noexcept(is_nothrow_move_constructible_v<_Tp> && + is_nothrow_swappable_v<_Tp> && + is_nothrow_move_constructible_v<_Err> && + is_nothrow_swappable_v<_Err>) + requires(is_swappable_v<_Tp> && + is_swappable_v<_Err> && + is_move_constructible_v<_Tp> && + is_move_constructible_v<_Err> && + (is_nothrow_move_constructible_v<_Tp> || + is_nothrow_move_constructible_v<_Err>)) + { + auto __swap_val_unex_impl = [&](expected& __with_val, expected& __with_err) { + if constexpr (is_nothrow_move_constructible_v<_Err>) { + _Err __tmp(std::move(__with_err.__union_.__unex_)); + std::destroy_at(std::addressof(__with_err.__union_.__unex_)); + auto __trans = std::__make_exception_guard([&] { + std::construct_at(std::addressof(__with_err.__union_.__unex_), std::move(__tmp)); + }); + std::construct_at(std::addressof(__with_err.__union_.__val_), std::move(__with_val.__union_.__val_)); + __trans.__complete(); + std::destroy_at(std::addressof(__with_val.__union_.__val_)); + std::construct_at(std::addressof(__with_val.__union_.__unex_), std::move(__tmp)); + } else { + static_assert(is_nothrow_move_constructible_v<_Tp>, + "To provide strong exception guarantee, Tp has to satisfy `is_nothrow_move_constructible_v` so " + "that it can be reverted to the previous state in case an exception is thrown during swap."); + _Tp __tmp(std::move(__with_val.__union_.__val_)); + std::destroy_at(std::addressof(__with_val.__union_.__val_)); + auto __trans = std::__make_exception_guard([&] { + std::construct_at(std::addressof(__with_val.__union_.__val_), std::move(__tmp)); + }); + std::construct_at(std::addressof(__with_val.__union_.__unex_), std::move(__with_err.__union_.__unex_)); + __trans.__complete(); + std::destroy_at(std::addressof(__with_err.__union_.__unex_)); + std::construct_at(std::addressof(__with_err.__union_.__val_), std::move(__tmp)); + } + __with_val.__has_val_ = false; + __with_err.__has_val_ = true; + }; + + if (__has_val_) { + if (__rhs.__has_val_) { + using std::swap; + swap(__union_.__val_, __rhs.__union_.__val_); + } else { + __swap_val_unex_impl(*this, __rhs); + } + } else { + if (__rhs.__has_val_) { + __swap_val_unex_impl(__rhs, *this); + } else { + using std::swap; + swap(__union_.__unex_, __rhs.__union_.__unex_); + } + } + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr void swap(expected& __x, expected& __y) + noexcept(noexcept(__x.swap(__y))) + requires requires { __x.swap(__y); } + { + __x.swap(__y); + } + + // [expected.object.obs], observers + _LIBCPP_HIDE_FROM_ABI constexpr const _Tp* operator->() const noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator-> requires the expected to contain a value"); + return std::addressof(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Tp* operator->() noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator-> requires the expected to contain a value"); + return std::addressof(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& operator*() const& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator* requires the expected to contain a value"); + return __union_.__val_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Tp& operator*() & noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator* requires the expected to contain a value"); + return __union_.__val_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Tp&& operator*() const&& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator* requires the expected to contain a value"); + return std::move(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Tp&& operator*() && noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator* requires the expected to contain a value"); + return std::move(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr explicit operator bool() const noexcept { return __has_val_; } + + _LIBCPP_HIDE_FROM_ABI constexpr bool has_value() const noexcept { return __has_val_; } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& value() const& { + static_assert(is_copy_constructible_v<_Err>, "error_type has to be copy constructible"); + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(std::as_const(error())); + } + return __union_.__val_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Tp& value() & { + static_assert(is_copy_constructible_v<_Err>, "error_type has to be copy constructible"); + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(std::as_const(error())); + } + return __union_.__val_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Tp&& value() const&& { + static_assert(is_copy_constructible_v<_Err> && is_constructible_v<_Err, decltype(std::move(error()))>, + "error_type has to be both copy constructible and constructible from decltype(std::move(error()))"); + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(std::move(error())); + } + return std::move(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Tp&& value() && { + static_assert(is_copy_constructible_v<_Err> && is_constructible_v<_Err, decltype(std::move(error()))>, + "error_type has to be both copy constructible and constructible from decltype(std::move(error()))"); + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(std::move(error())); + } + return std::move(__union_.__val_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Err& error() const& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return __union_.__unex_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Err& error() & noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return __union_.__unex_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Err&& error() const&& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return std::move(__union_.__unex_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Err&& error() && noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return std::move(__union_.__unex_); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Tp value_or(_Up&& __v) const& { + static_assert(is_copy_constructible_v<_Tp>, "value_type has to be copy constructible"); + static_assert(is_convertible_v<_Up, _Tp>, "argument has to be convertible to value_type"); + return __has_val_ ? __union_.__val_ : static_cast<_Tp>(std::forward<_Up>(__v)); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Tp value_or(_Up&& __v) && { + static_assert(is_move_constructible_v<_Tp>, "value_type has to be move constructible"); + static_assert(is_convertible_v<_Up, _Tp>, "argument has to be convertible to value_type"); + return __has_val_ ? std::move(__union_.__val_) : static_cast<_Tp>(std::forward<_Up>(__v)); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Err error_or(_Up&& __error) const& { + static_assert(is_copy_constructible_v<_Err>, "error_type has to be copy constructible"); + static_assert(is_convertible_v<_Up, _Err>, "argument has to be convertible to error_type"); + if (has_value()) + return std::forward<_Up>(__error); + return error(); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Err error_or(_Up&& __error) && { + static_assert(is_move_constructible_v<_Err>, "error_type has to be move constructible"); + static_assert(is_convertible_v<_Up, _Err>, "argument has to be convertible to error_type"); + if (has_value()) + return std::forward<_Up>(__error); + return std::move(error()); + } + + // [expected.void.monadic], monadic + template + requires is_constructible_v<_Err, _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) & { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f(value()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(value()) must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f), value()); + } + return _Up(unexpect, error()); + } + + template + requires is_constructible_v<_Err, const _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) const& { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f(value()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(value()) must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f), value()); + } + return _Up(unexpect, error()); + } + + template + requires is_constructible_v<_Err, _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) && { + using _Up = remove_cvref_t>; + static_assert( + __is_std_expected<_Up>::value, "The result of f(std::move(value())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(value())) must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f), std::move(value())); + } + return _Up(unexpect, std::move(error())); + } + + template + requires is_constructible_v<_Err, const _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) const&& { + using _Up = remove_cvref_t>; + static_assert( + __is_std_expected<_Up>::value, "The result of f(std::move(value())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(value())) must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f), std::move(value())); + } + return _Up(unexpect, std::move(error())); + } + + template + requires is_constructible_v<_Tp, _Tp&> + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) & { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, "The result of f(error()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(error()) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(in_place, value()); + } + return std::invoke(std::forward<_Func>(__f), error()); + } + + template + requires is_constructible_v<_Tp, const _Tp&> + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) const& { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, "The result of f(error()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(error()) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(in_place, value()); + } + return std::invoke(std::forward<_Func>(__f), error()); + } + + template + requires is_constructible_v<_Tp, _Tp&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) && { + using _Gp = remove_cvref_t>; + static_assert( + __is_std_expected<_Gp>::value, "The result of f(std::move(error())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(error())) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(in_place, std::move(value())); + } + return std::invoke(std::forward<_Func>(__f), std::move(error())); + } + + template + requires is_constructible_v<_Tp, const _Tp&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) const&& { + using _Gp = remove_cvref_t>; + static_assert( + __is_std_expected<_Gp>::value, "The result of f(std::move(error())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(error())) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(in_place, std::move(value())); + } + return std::invoke(std::forward<_Func>(__f), std::move(error())); + } + + template + requires is_constructible_v<_Err, _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) & { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, error()); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f), value()); + } else { + std::invoke(std::forward<_Func>(__f), value()); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, const _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) const& { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, error()); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f), value()); + } else { + std::invoke(std::forward<_Func>(__f), value()); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) && { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, std::move(error())); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>( + __expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f), std::move(value())); + } else { + std::invoke(std::forward<_Func>(__f), std::move(value())); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, const _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) const&& { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, std::move(error())); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>( + __expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f), std::move(value())); + } else { + std::invoke(std::forward<_Func>(__f), std::move(value())); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Tp, _Tp&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) & { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(error()) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(in_place, value()); + } + return expected<_Tp, _Gp>(__expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), error()); + } + + template + requires is_constructible_v<_Tp, const _Tp&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) const& { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(error()) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(in_place, value()); + } + return expected<_Tp, _Gp>(__expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), error()); + } + + template + requires is_constructible_v<_Tp, _Tp&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) && { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(std::move(error())) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(in_place, std::move(value())); + } + return expected<_Tp, _Gp>( + __expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), std::move(error())); + } + + template + requires is_constructible_v<_Tp, const _Tp&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) const&& { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(std::move(error())) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(in_place, std::move(value())); + } + return expected<_Tp, _Gp>( + __expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), std::move(error())); + } + + // [expected.object.eq], equality operators + template + requires(!is_void_v<_T2>) + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const expected<_T2, _E2>& __y) { + if (__x.__has_val_ != __y.__has_val_) { + return false; + } else { + if (__x.__has_val_) { + return __x.__union_.__val_ == __y.__union_.__val_; + } else { + return __x.__union_.__unex_ == __y.__union_.__unex_; + } + } + } + + template + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const _T2& __v) { + return __x.__has_val_ && static_cast(__x.__union_.__val_ == __v); + } + + template + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const unexpected<_E2>& __e) { + return !__x.__has_val_ && static_cast(__x.__union_.__unex_ == __e.error()); + } + +private: + struct __empty_t {}; + + template + union __union_t { + _LIBCPP_HIDE_FROM_ABI constexpr __union_t() {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + std::__expected_construct_in_place_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __val_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + std::__expected_construct_unexpected_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __unex_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(is_trivially_destructible_v<_ValueType> && is_trivially_destructible_v<_ErrorType>) + = default; + + // the expected's destructor handles this + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() {} + + _ValueType __val_; + _ErrorType __unex_; + }; + + // use named union because [[no_unique_address]] cannot be applied to an unnamed union, + // also guaranteed elision into a potentially-overlapping subobject is unsettled (and + // it's not clear that it's implementable, given that the function is allowed to clobber + // the tail padding) - see https://github.com/itanium-cxx-abi/cxx-abi/issues/107. + template + requires(is_trivially_move_constructible_v<_ValueType> && is_trivially_move_constructible_v<_ErrorType>) + union __union_t<_ValueType, _ErrorType> { + _LIBCPP_HIDE_FROM_ABI constexpr __union_t() : __empty_() {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + std::__expected_construct_in_place_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __val_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + std::__expected_construct_unexpected_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __unex_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(is_trivially_destructible_v<_ValueType> && is_trivially_destructible_v<_ErrorType>) + = default; + + // the expected's destructor handles this + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(!is_trivially_destructible_v<_ValueType> || !is_trivially_destructible_v<_ErrorType>) + {} + + _LIBCPP_NO_UNIQUE_ADDRESS __empty_t __empty_; + _LIBCPP_NO_UNIQUE_ADDRESS _ValueType __val_; + _LIBCPP_NO_UNIQUE_ADDRESS _ErrorType __unex_; + }; + + _LIBCPP_NO_UNIQUE_ADDRESS __union_t<_Tp, _Err> __union_; + bool __has_val_; +}; + +template + requires is_void_v<_Tp> +class expected<_Tp, _Err> { + static_assert(__valid_std_unexpected<_Err>::value, + "[expected.void.general] A program that instantiates expected with a E that is not a " + "valid argument for unexpected is ill-formed"); + + template + friend class expected; + + template + using __can_convert = + _And< is_void<_Up>, + is_constructible<_Err, _OtherErrQual>, + _Not, expected<_Up, _OtherErr>&>>, + _Not, expected<_Up, _OtherErr>>>, + _Not, const expected<_Up, _OtherErr>&>>, + _Not, const expected<_Up, _OtherErr>>>>; + +public: + using value_type = _Tp; + using error_type = _Err; + using unexpected_type = unexpected<_Err>; + + template + using rebind = expected<_Up, error_type>; + + // [expected.void.ctor], constructors + _LIBCPP_HIDE_FROM_ABI constexpr expected() noexcept : __has_val_(true) {} + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected&) + requires(is_copy_constructible_v<_Err> && is_trivially_copy_constructible_v<_Err>) + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(const expected& __rhs) + noexcept(is_nothrow_copy_constructible_v<_Err>) // strengthened + requires(is_copy_constructible_v<_Err> && !is_trivially_copy_constructible_v<_Err>) + : __has_val_(__rhs.__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), __rhs.__union_.__unex_); + } + } + + _LIBCPP_HIDE_FROM_ABI constexpr expected(expected&&) + requires(is_move_constructible_v<_Err> && is_trivially_move_constructible_v<_Err>) + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr expected(expected&& __rhs) + noexcept(is_nothrow_move_constructible_v<_Err>) + requires(is_move_constructible_v<_Err> && !is_trivially_move_constructible_v<_Err>) + : __has_val_(__rhs.__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__rhs.__union_.__unex_)); + } + } + + template + requires __can_convert<_Up, _OtherErr, const _OtherErr&>::value + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v) + expected(const expected<_Up, _OtherErr>& __rhs) + noexcept(is_nothrow_constructible_v<_Err, const _OtherErr&>) // strengthened + : __has_val_(__rhs.__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), __rhs.__union_.__unex_); + } + } + + template + requires __can_convert<_Up, _OtherErr, _OtherErr>::value + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v<_OtherErr, _Err>) + expected(expected<_Up, _OtherErr>&& __rhs) + noexcept(is_nothrow_constructible_v<_Err, _OtherErr>) // strengthened + : __has_val_(__rhs.__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__rhs.__union_.__unex_)); + } + } + + template + requires is_constructible_v<_Err, const _OtherErr&> + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v) + expected(const unexpected<_OtherErr>& __unex) + noexcept(is_nothrow_constructible_v<_Err, const _OtherErr&>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), __unex.error()); + } + + template + requires is_constructible_v<_Err, _OtherErr> + _LIBCPP_HIDE_FROM_ABI constexpr explicit(!is_convertible_v<_OtherErr, _Err>) + expected(unexpected<_OtherErr>&& __unex) + noexcept(is_nothrow_constructible_v<_Err, _OtherErr>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__unex.error())); + } + + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(in_place_t) noexcept : __has_val_(true) {} + + template + requires is_constructible_v<_Err, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(unexpect_t, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Err, _Args...>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), std::forward<_Args>(__args)...); + } + + template + requires is_constructible_v< _Err, initializer_list<_Up>&, _Args... > + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(unexpect_t, initializer_list<_Up> __il, _Args&&... __args) + noexcept(is_nothrow_constructible_v<_Err, initializer_list<_Up>&, _Args...>) // strengthened + : __has_val_(false) { + std::construct_at(std::addressof(__union_.__unex_), __il, std::forward<_Args>(__args)...); + } + +private: + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected(__expected_construct_in_place_from_invoke_tag, _Func&& __f) + : __has_val_(true) { + std::invoke(std::forward<_Func>(__f)); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit expected( + __expected_construct_unexpected_from_invoke_tag __tag, _Func&& __f, _Args&&... __args) + : __union_(__tag, std::forward<_Func>(__f), std::forward<_Args>(__args)...), __has_val_(false) {} + +public: + // [expected.void.dtor], destructor + + _LIBCPP_HIDE_FROM_ABI constexpr ~expected() + requires is_trivially_destructible_v<_Err> + = default; + + _LIBCPP_HIDE_FROM_ABI constexpr ~expected() + requires(!is_trivially_destructible_v<_Err>) + { + if (!__has_val_) { + std::destroy_at(std::addressof(__union_.__unex_)); + } + } + + // [expected.void.assign], assignment + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const expected&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const expected& __rhs) + noexcept(is_nothrow_copy_assignable_v<_Err> && is_nothrow_copy_constructible_v<_Err>) // strengthened + requires(is_copy_assignable_v<_Err> && is_copy_constructible_v<_Err>) + { + if (__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), __rhs.__union_.__unex_); + __has_val_ = false; + } + } else { + if (__rhs.__has_val_) { + std::destroy_at(std::addressof(__union_.__unex_)); + __has_val_ = true; + } else { + __union_.__unex_ = __rhs.__union_.__unex_; + } + } + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(expected&&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(expected&& __rhs) + noexcept(is_nothrow_move_assignable_v<_Err> && + is_nothrow_move_constructible_v<_Err>) + requires(is_move_assignable_v<_Err> && + is_move_constructible_v<_Err>) + { + if (__has_val_) { + if (!__rhs.__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__rhs.__union_.__unex_)); + __has_val_ = false; + } + } else { + if (__rhs.__has_val_) { + std::destroy_at(std::addressof(__union_.__unex_)); + __has_val_ = true; + } else { + __union_.__unex_ = std::move(__rhs.__union_.__unex_); + } + } + return *this; + } + + template + requires(is_constructible_v<_Err, const _OtherErr&> && is_assignable_v<_Err&, const _OtherErr&>) + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(const unexpected<_OtherErr>& __un) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), __un.error()); + __has_val_ = false; + } else { + __union_.__unex_ = __un.error(); + } + return *this; + } + + template + requires(is_constructible_v<_Err, _OtherErr> && is_assignable_v<_Err&, _OtherErr>) + _LIBCPP_HIDE_FROM_ABI constexpr expected& operator=(unexpected<_OtherErr>&& __un) { + if (__has_val_) { + std::construct_at(std::addressof(__union_.__unex_), std::move(__un.error())); + __has_val_ = false; + } else { + __union_.__unex_ = std::move(__un.error()); + } + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr void emplace() noexcept { + if (!__has_val_) { + std::destroy_at(std::addressof(__union_.__unex_)); + __has_val_ = true; + } + } + + // [expected.void.swap], swap + _LIBCPP_HIDE_FROM_ABI constexpr void swap(expected& __rhs) + noexcept(is_nothrow_move_constructible_v<_Err> && is_nothrow_swappable_v<_Err>) + requires(is_swappable_v<_Err> && is_move_constructible_v<_Err>) + { + auto __swap_val_unex_impl = [&](expected& __with_val, expected& __with_err) { + std::construct_at(std::addressof(__with_val.__union_.__unex_), std::move(__with_err.__union_.__unex_)); + std::destroy_at(std::addressof(__with_err.__union_.__unex_)); + __with_val.__has_val_ = false; + __with_err.__has_val_ = true; + }; + + if (__has_val_) { + if (!__rhs.__has_val_) { + __swap_val_unex_impl(*this, __rhs); + } + } else { + if (__rhs.__has_val_) { + __swap_val_unex_impl(__rhs, *this); + } else { + using std::swap; + swap(__union_.__unex_, __rhs.__union_.__unex_); + } + } + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr void swap(expected& __x, expected& __y) + noexcept(noexcept(__x.swap(__y))) + requires requires { __x.swap(__y); } + { + __x.swap(__y); + } + + // [expected.void.obs], observers + _LIBCPP_HIDE_FROM_ABI constexpr explicit operator bool() const noexcept { return __has_val_; } + + _LIBCPP_HIDE_FROM_ABI constexpr bool has_value() const noexcept { return __has_val_; } + + _LIBCPP_HIDE_FROM_ABI constexpr void operator*() const noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__has_val_, "expected::operator* requires the expected to contain a value"); + } + + _LIBCPP_HIDE_FROM_ABI constexpr void value() const& { + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(__union_.__unex_); + } + } + + _LIBCPP_HIDE_FROM_ABI constexpr void value() && { + if (!__has_val_) { + std::__throw_bad_expected_access<_Err>(std::move(__union_.__unex_)); + } + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Err& error() const& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return __union_.__unex_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Err& error() & noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return __union_.__unex_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Err&& error() const&& noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return std::move(__union_.__unex_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr _Err&& error() && noexcept { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!__has_val_, "expected::error requires the expected to contain an error"); + return std::move(__union_.__unex_); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Err error_or(_Up&& __error) const& { + static_assert(is_copy_constructible_v<_Err>, "error_type has to be copy constructible"); + static_assert(is_convertible_v<_Up, _Err>, "argument has to be convertible to error_type"); + if (has_value()) { + return std::forward<_Up>(__error); + } + return error(); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Err error_or(_Up&& __error) && { + static_assert(is_move_constructible_v<_Err>, "error_type has to be move constructible"); + static_assert(is_convertible_v<_Up, _Err>, "argument has to be convertible to error_type"); + if (has_value()) { + return std::forward<_Up>(__error); + } + return std::move(error()); + } + + // [expected.void.monadic], monadic + template + requires is_constructible_v<_Err, _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) & { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f() must be a specialization of std::expected"); + static_assert( + is_same_v, "The result of f() must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f)); + } + return _Up(unexpect, error()); + } + + template + requires is_constructible_v<_Err, const _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) const& { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f() must be a specialization of std::expected"); + static_assert( + is_same_v, "The result of f() must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f)); + } + return _Up(unexpect, error()); + } + + template + requires is_constructible_v<_Err, _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) && { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f() must be a specialization of std::expected"); + static_assert( + is_same_v, "The result of f() must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f)); + } + return _Up(unexpect, std::move(error())); + } + + template + requires is_constructible_v<_Err, const _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto and_then(_Func&& __f) const&& { + using _Up = remove_cvref_t>; + static_assert(__is_std_expected<_Up>::value, "The result of f() must be a specialization of std::expected"); + static_assert( + is_same_v, "The result of f() must have the same error_type as this expected"); + if (has_value()) { + return std::invoke(std::forward<_Func>(__f)); + } + return _Up(unexpect, std::move(error())); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) & { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, "The result of f(error()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(error()) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(); + } + return std::invoke(std::forward<_Func>(__f), error()); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) const& { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, "The result of f(error()) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(error()) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(); + } + return std::invoke(std::forward<_Func>(__f), error()); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) && { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, + "The result of f(std::move(error())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(error())) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(); + } + return std::invoke(std::forward<_Func>(__f), std::move(error())); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto or_else(_Func&& __f) const&& { + using _Gp = remove_cvref_t>; + static_assert(__is_std_expected<_Gp>::value, + "The result of f(std::move(error())) must be a specialization of std::expected"); + static_assert(is_same_v, + "The result of f(std::move(error())) must have the same value_type as this expected"); + if (has_value()) { + return _Gp(); + } + return std::invoke(std::forward<_Func>(__f), std::move(error())); + } + + template + requires is_constructible_v<_Err, _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) & { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, error()); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f)); + } else { + std::invoke(std::forward<_Func>(__f)); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, const _Err&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) const& { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, error()); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f)); + } else { + std::invoke(std::forward<_Func>(__f)); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) && { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, std::move(error())); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f)); + } else { + std::invoke(std::forward<_Func>(__f)); + return expected<_Up, _Err>(); + } + } + + template + requires is_constructible_v<_Err, const _Err&&> + _LIBCPP_HIDE_FROM_ABI constexpr auto transform(_Func&& __f) const&& { + using _Up = remove_cv_t>; + if (!has_value()) { + return expected<_Up, _Err>(unexpect, std::move(error())); + } + if constexpr (!is_void_v<_Up>) { + return expected<_Up, _Err>(__expected_construct_in_place_from_invoke_tag{}, std::forward<_Func>(__f)); + } else { + std::invoke(std::forward<_Func>(__f)); + return expected<_Up, _Err>(); + } + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) & { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(error()) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(); + } + return expected<_Tp, _Gp>(__expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), error()); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) const& { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(error()) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(); + } + return expected<_Tp, _Gp>(__expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), error()); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) && { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(std::move(error())) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(); + } + return expected<_Tp, _Gp>( + __expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), std::move(error())); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr auto transform_error(_Func&& __f) const&& { + using _Gp = remove_cv_t>; + static_assert(__valid_std_unexpected<_Gp>::value, + "The result of f(std::move(error())) must be a valid template argument for unexpected"); + if (has_value()) { + return expected<_Tp, _Gp>(); + } + return expected<_Tp, _Gp>( + __expected_construct_unexpected_from_invoke_tag{}, std::forward<_Func>(__f), std::move(error())); + } + + // [expected.void.eq], equality operators + template + requires is_void_v<_T2> + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const expected<_T2, _E2>& __y) { + if (__x.__has_val_ != __y.__has_val_) { + return false; + } else { + return __x.__has_val_ || static_cast(__x.__union_.__unex_ == __y.__union_.__unex_); + } + } + + template + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const unexpected<_E2>& __y) { + return !__x.__has_val_ && static_cast(__x.__union_.__unex_ == __y.error()); + } + +private: + struct __empty_t {}; + + template + union __union_t { + _LIBCPP_HIDE_FROM_ABI constexpr __union_t() : __empty_() {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + __expected_construct_unexpected_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __unex_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(is_trivially_destructible_v<_ErrorType>) + = default; + + // the expected's destructor handles this + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() {} + + __empty_t __empty_; + _ErrorType __unex_; + }; + + // use named union because [[no_unique_address]] cannot be applied to an unnamed union, + // also guaranteed elision into a potentially-overlapping subobject is unsettled (and + // it's not clear that it's implementable, given that the function is allowed to clobber + // the tail padding) - see https://github.com/itanium-cxx-abi/cxx-abi/issues/107. + template + requires is_trivially_move_constructible_v<_ErrorType> + union __union_t<_ErrorType> { + _LIBCPP_HIDE_FROM_ABI constexpr __union_t() : __empty_() {} + + template + _LIBCPP_HIDE_FROM_ABI constexpr explicit __union_t( + __expected_construct_unexpected_from_invoke_tag, _Func&& __f, _Args&&... __args) + : __unex_(std::invoke(std::forward<_Func>(__f), std::forward<_Args>(__args)...)) {} + + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(is_trivially_destructible_v<_ErrorType>) + = default; + + // the expected's destructor handles this + _LIBCPP_HIDE_FROM_ABI constexpr ~__union_t() + requires(!is_trivially_destructible_v<_ErrorType>) + {} + + _LIBCPP_NO_UNIQUE_ADDRESS __empty_t __empty_; + _LIBCPP_NO_UNIQUE_ADDRESS _ErrorType __unex_; + }; + + _LIBCPP_NO_UNIQUE_ADDRESS __union_t<_Err> __union_; + bool __has_val_; +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___EXPECTED_EXPECTED_H diff --git a/lib/libcxx/include/__expected/unexpect.h b/lib/libcxx/include/__expected/unexpect.h new file mode 100644 index 0000000..df52787 --- /dev/null +++ b/lib/libcxx/include/__expected/unexpect.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +#ifndef _LIBCPP___EXPECTED_UNEXPECT_H +#define _LIBCPP___EXPECTED_UNEXPECT_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +struct unexpect_t { + explicit unexpect_t() = default; +}; + +inline constexpr unexpect_t unexpect{}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +#endif // _LIBCPP___EXPECTED_UNEXPECT_H diff --git a/lib/libcxx/include/__expected/unexpected.h b/lib/libcxx/include/__expected/unexpected.h new file mode 100644 index 0000000..c7fe3c5 --- /dev/null +++ b/lib/libcxx/include/__expected/unexpected.h @@ -0,0 +1,127 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +#ifndef _LIBCPP___EXPECTED_UNEXPECTED_H +#define _LIBCPP___EXPECTED_UNEXPECTED_H + +#include <__config> +#include <__type_traits/conjunction.h> +#include <__type_traits/is_array.h> +#include <__type_traits/is_const.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_nothrow_constructible.h> +#include <__type_traits/is_object.h> +#include <__type_traits/is_same.h> +#include <__type_traits/is_swappable.h> +#include <__type_traits/is_volatile.h> +#include <__type_traits/negation.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> +#include <__utility/in_place.h> +#include <__utility/move.h> +#include <__utility/swap.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class unexpected; + +template +struct __is_std_unexpected : false_type {}; + +template +struct __is_std_unexpected> : true_type {}; + +template +using __valid_std_unexpected = _BoolConstant< // + is_object_v<_Tp> && // + !is_array_v<_Tp> && // + !__is_std_unexpected<_Tp>::value && // + !is_const_v<_Tp> && // + !is_volatile_v<_Tp> // + >; + +template +class unexpected { + static_assert(__valid_std_unexpected<_Err>::value, + "[expected.un.general] states a program that instantiates std::unexpected for a non-object type, an " + "array type, a specialization of unexpected, or a cv-qualified type is ill-formed."); + +public: + _LIBCPP_HIDE_FROM_ABI constexpr unexpected(const unexpected&) = default; + _LIBCPP_HIDE_FROM_ABI constexpr unexpected(unexpected&&) = default; + + template + requires(!is_same_v, unexpected> && // + !is_same_v, in_place_t> && // + is_constructible_v<_Err, _Error>) + _LIBCPP_HIDE_FROM_ABI constexpr explicit unexpected(_Error&& __error) // + noexcept(is_nothrow_constructible_v<_Err, _Error>) // strengthened + : __unex_(std::forward<_Error>(__error)) {} + + template + requires is_constructible_v<_Err, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr explicit unexpected(in_place_t, _Args&&... __args) // + noexcept(is_nothrow_constructible_v<_Err, _Args...>) // strengthened + : __unex_(std::forward<_Args>(__args)...) {} + + template + requires is_constructible_v<_Err, initializer_list<_Up>&, _Args...> + _LIBCPP_HIDE_FROM_ABI constexpr explicit unexpected(in_place_t, initializer_list<_Up> __il, _Args&&... __args) // + noexcept(is_nothrow_constructible_v<_Err, initializer_list<_Up>&, _Args...>) // strengthened + : __unex_(__il, std::forward<_Args>(__args)...) {} + + _LIBCPP_HIDE_FROM_ABI constexpr unexpected& operator=(const unexpected&) = default; + _LIBCPP_HIDE_FROM_ABI constexpr unexpected& operator=(unexpected&&) = default; + + _LIBCPP_HIDE_FROM_ABI constexpr const _Err& error() const& noexcept { return __unex_; } + _LIBCPP_HIDE_FROM_ABI constexpr _Err& error() & noexcept { return __unex_; } + _LIBCPP_HIDE_FROM_ABI constexpr const _Err&& error() const&& noexcept { return std::move(__unex_); } + _LIBCPP_HIDE_FROM_ABI constexpr _Err&& error() && noexcept { return std::move(__unex_); } + + _LIBCPP_HIDE_FROM_ABI constexpr void swap(unexpected& __other) noexcept(is_nothrow_swappable_v<_Err>) { + static_assert(is_swappable_v<_Err>, "unexpected::swap requires is_swappable_v to be true"); + using std::swap; + swap(__unex_, __other.__unex_); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr void swap(unexpected& __x, unexpected& __y) noexcept(noexcept(__x.swap(__y))) + requires is_swappable_v<_Err> + { + __x.swap(__y); + } + + template + _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const unexpected& __x, const unexpected<_Err2>& __y) { + return __x.__unex_ == __y.__unex_; + } + +private: + _Err __unex_; +}; + +template +unexpected(_Err) -> unexpected<_Err>; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___EXPECTED_UNEXPECTED_H diff --git a/lib/libcxx/include/__filesystem/copy_options.h b/lib/libcxx/include/__filesystem/copy_options.h new file mode 100644 index 0000000..11962e4 --- /dev/null +++ b/lib/libcxx/include/__filesystem/copy_options.h @@ -0,0 +1,80 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_COPY_OPTIONS_H +#define _LIBCPP___FILESYSTEM_COPY_OPTIONS_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +enum class _LIBCPP_ENUM_VIS copy_options : unsigned short { + none = 0, + skip_existing = 1, + overwrite_existing = 2, + update_existing = 4, + recursive = 8, + copy_symlinks = 16, + skip_symlinks = 32, + directories_only = 64, + create_symlinks = 128, + create_hard_links = 256, + __in_recursive_copy = 512, +}; + +_LIBCPP_INLINE_VISIBILITY +inline constexpr copy_options operator&(copy_options __lhs, copy_options __rhs) { + return static_cast(static_cast(__lhs) & + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr copy_options operator|(copy_options __lhs, copy_options __rhs) { + return static_cast(static_cast(__lhs) | + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr copy_options operator^(copy_options __lhs, copy_options __rhs) { + return static_cast(static_cast(__lhs) ^ + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr copy_options operator~(copy_options __lhs) { + return static_cast(~static_cast(__lhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline copy_options& operator&=(copy_options& __lhs, copy_options __rhs) { + return __lhs = __lhs & __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline copy_options& operator|=(copy_options& __lhs, copy_options __rhs) { + return __lhs = __lhs | __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline copy_options& operator^=(copy_options& __lhs, copy_options __rhs) { + return __lhs = __lhs ^ __rhs; +} + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_COPY_OPTIONS_H diff --git a/lib/libcxx/include/__filesystem/directory_entry.h b/lib/libcxx/include/__filesystem/directory_entry.h new file mode 100644 index 0000000..bb7a061 --- /dev/null +++ b/lib/libcxx/include/__filesystem/directory_entry.h @@ -0,0 +1,526 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H +#define _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H + +#include <__availability> +#include <__chrono/time_point.h> +#include <__compare/ordering.h> +#include <__config> +#include <__filesystem/file_status.h> +#include <__filesystem/file_time_type.h> +#include <__filesystem/file_type.h> +#include <__filesystem/filesystem_error.h> +#include <__filesystem/operations.h> +#include <__filesystem/path.h> +#include <__filesystem/perms.h> +#include <__system_error/errc.h> +#include <__system_error/error_code.h> +#include <__utility/move.h> +#include <__utility/unreachable.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +#if !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +class directory_entry { + typedef _VSTD_FS::path _Path; + +public: + // constructors and destructors + _LIBCPP_HIDE_FROM_ABI directory_entry() noexcept = default; + _LIBCPP_HIDE_FROM_ABI directory_entry(directory_entry const&) = default; + _LIBCPP_HIDE_FROM_ABI directory_entry(directory_entry&&) noexcept = default; + + _LIBCPP_INLINE_VISIBILITY + explicit directory_entry(_Path const& __p) : __p_(__p) { + error_code __ec; + __refresh(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + directory_entry(_Path const& __p, error_code& __ec) : __p_(__p) { + __refresh(&__ec); + } + + _LIBCPP_HIDE_FROM_ABI ~directory_entry() {} + + _LIBCPP_HIDE_FROM_ABI directory_entry& operator=(directory_entry const&) = default; + _LIBCPP_HIDE_FROM_ABI directory_entry& operator=(directory_entry&&) noexcept = default; + + _LIBCPP_INLINE_VISIBILITY + void assign(_Path const& __p) { + __p_ = __p; + error_code __ec; + __refresh(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + void assign(_Path const& __p, error_code& __ec) { + __p_ = __p; + __refresh(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + void replace_filename(_Path const& __p) { + __p_.replace_filename(__p); + error_code __ec; + __refresh(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + void replace_filename(_Path const& __p, error_code& __ec) { + __p_ = __p_.parent_path() / __p; + __refresh(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + void refresh() { __refresh(); } + + _LIBCPP_INLINE_VISIBILITY + void refresh(error_code& __ec) noexcept { __refresh(&__ec); } + + _LIBCPP_INLINE_VISIBILITY + _Path const& path() const noexcept { return __p_; } + + _LIBCPP_INLINE_VISIBILITY + operator const _Path&() const noexcept { return __p_; } + + _LIBCPP_INLINE_VISIBILITY + bool exists() const { return _VSTD_FS::exists(file_status{__get_ft()}); } + + _LIBCPP_INLINE_VISIBILITY + bool exists(error_code& __ec) const noexcept { + return _VSTD_FS::exists(file_status{__get_ft(&__ec)}); + } + + _LIBCPP_INLINE_VISIBILITY + bool is_block_file() const { return __get_ft() == file_type::block; } + + _LIBCPP_INLINE_VISIBILITY + bool is_block_file(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::block; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_character_file() const { return __get_ft() == file_type::character; } + + _LIBCPP_INLINE_VISIBILITY + bool is_character_file(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::character; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_directory() const { return __get_ft() == file_type::directory; } + + _LIBCPP_INLINE_VISIBILITY + bool is_directory(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::directory; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_fifo() const { return __get_ft() == file_type::fifo; } + + _LIBCPP_INLINE_VISIBILITY + bool is_fifo(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::fifo; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_other() const { return _VSTD_FS::is_other(file_status{__get_ft()}); } + + _LIBCPP_INLINE_VISIBILITY + bool is_other(error_code& __ec) const noexcept { + return _VSTD_FS::is_other(file_status{__get_ft(&__ec)}); + } + + _LIBCPP_INLINE_VISIBILITY + bool is_regular_file() const { return __get_ft() == file_type::regular; } + + _LIBCPP_INLINE_VISIBILITY + bool is_regular_file(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::regular; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_socket() const { return __get_ft() == file_type::socket; } + + _LIBCPP_INLINE_VISIBILITY + bool is_socket(error_code& __ec) const noexcept { + return __get_ft(&__ec) == file_type::socket; + } + + _LIBCPP_INLINE_VISIBILITY + bool is_symlink() const { return __get_sym_ft() == file_type::symlink; } + + _LIBCPP_INLINE_VISIBILITY + bool is_symlink(error_code& __ec) const noexcept { + return __get_sym_ft(&__ec) == file_type::symlink; + } + _LIBCPP_INLINE_VISIBILITY + uintmax_t file_size() const { return __get_size(); } + + _LIBCPP_INLINE_VISIBILITY + uintmax_t file_size(error_code& __ec) const noexcept { + return __get_size(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + uintmax_t hard_link_count() const { return __get_nlink(); } + + _LIBCPP_INLINE_VISIBILITY + uintmax_t hard_link_count(error_code& __ec) const noexcept { + return __get_nlink(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + file_time_type last_write_time() const { return __get_write_time(); } + + _LIBCPP_INLINE_VISIBILITY + file_time_type last_write_time(error_code& __ec) const noexcept { + return __get_write_time(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + file_status status() const { return __get_status(); } + + _LIBCPP_INLINE_VISIBILITY + file_status status(error_code& __ec) const noexcept { + return __get_status(&__ec); + } + + _LIBCPP_INLINE_VISIBILITY + file_status symlink_status() const { return __get_symlink_status(); } + + _LIBCPP_INLINE_VISIBILITY + file_status symlink_status(error_code& __ec) const noexcept { + return __get_symlink_status(&__ec); + } + + + _LIBCPP_INLINE_VISIBILITY + bool operator==(directory_entry const& __rhs) const noexcept { + return __p_ == __rhs.__p_; + } + +#if _LIBCPP_STD_VER <= 17 + _LIBCPP_INLINE_VISIBILITY + bool operator!=(directory_entry const& __rhs) const noexcept { + return __p_ != __rhs.__p_; + } + + _LIBCPP_INLINE_VISIBILITY + bool operator<(directory_entry const& __rhs) const noexcept { + return __p_ < __rhs.__p_; + } + + _LIBCPP_INLINE_VISIBILITY + bool operator<=(directory_entry const& __rhs) const noexcept { + return __p_ <= __rhs.__p_; + } + + _LIBCPP_INLINE_VISIBILITY + bool operator>(directory_entry const& __rhs) const noexcept { + return __p_ > __rhs.__p_; + } + + _LIBCPP_INLINE_VISIBILITY + bool operator>=(directory_entry const& __rhs) const noexcept { + return __p_ >= __rhs.__p_; + } + +#else // _LIBCPP_STD_VER <= 17 + + _LIBCPP_HIDE_FROM_ABI + strong_ordering operator<=>(const directory_entry& __rhs) const noexcept { + return __p_ <=> __rhs.__p_; + } + +#endif // _LIBCPP_STD_VER <= 17 + + template + _LIBCPP_INLINE_VISIBILITY + friend basic_ostream<_CharT, _Traits>& operator<<(basic_ostream<_CharT, _Traits>& __os, const directory_entry& __d) { + return __os << __d.path(); + } + +private: + friend class directory_iterator; + friend class recursive_directory_iterator; + friend class _LIBCPP_HIDDEN __dir_stream; + + enum _CacheType : unsigned char { + _Empty, + _IterSymlink, + _IterNonSymlink, + _RefreshSymlink, + _RefreshSymlinkUnresolved, + _RefreshNonSymlink + }; + + struct __cached_data { + uintmax_t __size_; + uintmax_t __nlink_; + file_time_type __write_time_; + perms __sym_perms_; + perms __non_sym_perms_; + file_type __type_; + _CacheType __cache_type_; + + _LIBCPP_INLINE_VISIBILITY + __cached_data() noexcept { __reset(); } + + _LIBCPP_INLINE_VISIBILITY + void __reset() { + __cache_type_ = _Empty; + __type_ = file_type::none; + __sym_perms_ = __non_sym_perms_ = perms::unknown; + __size_ = __nlink_ = uintmax_t(-1); + __write_time_ = file_time_type::min(); + } + }; + + _LIBCPP_INLINE_VISIBILITY + static __cached_data __create_iter_result(file_type __ft) { + __cached_data __data; + __data.__type_ = __ft; + __data.__cache_type_ = [&]() { + switch (__ft) { + case file_type::none: + return _Empty; + case file_type::symlink: + return _IterSymlink; + default: + return _IterNonSymlink; + } + }(); + return __data; + } + + _LIBCPP_INLINE_VISIBILITY + void __assign_iter_entry(_Path&& __p, __cached_data __dt) { + __p_ = _VSTD::move(__p); + __data_ = __dt; + } + + _LIBCPP_EXPORTED_FROM_ABI error_code __do_refresh() noexcept; + + _LIBCPP_INLINE_VISIBILITY + static bool __is_dne_error(error_code const& __ec) { + if (!__ec) + return true; + switch (static_cast(__ec.value())) { + case errc::no_such_file_or_directory: + case errc::not_a_directory: + return true; + default: + return false; + } + } + + _LIBCPP_INLINE_VISIBILITY + void __handle_error(const char* __msg, error_code* __dest_ec, + error_code const& __ec, bool __allow_dne = false) const { + if (__dest_ec) { + *__dest_ec = __ec; + return; + } + if (__ec && (!__allow_dne || !__is_dne_error(__ec))) + __throw_filesystem_error(__msg, __p_, __ec); + } + + _LIBCPP_INLINE_VISIBILITY + void __refresh(error_code* __ec = nullptr) { + __handle_error("in directory_entry::refresh", __ec, __do_refresh(), + /*allow_dne*/ true); + } + + _LIBCPP_INLINE_VISIBILITY + file_type __get_sym_ft(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + return __symlink_status(__p_, __ec).type(); + case _IterSymlink: + case _RefreshSymlink: + case _RefreshSymlinkUnresolved: + if (__ec) + __ec->clear(); + return file_type::symlink; + case _IterNonSymlink: + case _RefreshNonSymlink: + file_status __st(__data_.__type_); + if (__ec && !_VSTD_FS::exists(__st)) + *__ec = make_error_code(errc::no_such_file_or_directory); + else if (__ec) + __ec->clear(); + return __data_.__type_; + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + file_type __get_ft(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterSymlink: + case _RefreshSymlinkUnresolved: + return __status(__p_, __ec).type(); + case _IterNonSymlink: + case _RefreshNonSymlink: + case _RefreshSymlink: { + file_status __st(__data_.__type_); + if (__ec && !_VSTD_FS::exists(__st)) + *__ec = make_error_code(errc::no_such_file_or_directory); + else if (__ec) + __ec->clear(); + return __data_.__type_; + } + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + file_status __get_status(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterNonSymlink: + case _IterSymlink: + case _RefreshSymlinkUnresolved: + return __status(__p_, __ec); + case _RefreshNonSymlink: + case _RefreshSymlink: + return file_status(__get_ft(__ec), __data_.__non_sym_perms_); + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + file_status __get_symlink_status(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterNonSymlink: + case _IterSymlink: + return __symlink_status(__p_, __ec); + case _RefreshNonSymlink: + return file_status(__get_sym_ft(__ec), __data_.__non_sym_perms_); + case _RefreshSymlink: + case _RefreshSymlinkUnresolved: + return file_status(__get_sym_ft(__ec), __data_.__sym_perms_); + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + uintmax_t __get_size(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterNonSymlink: + case _IterSymlink: + case _RefreshSymlinkUnresolved: + return _VSTD_FS::__file_size(__p_, __ec); + case _RefreshSymlink: + case _RefreshNonSymlink: { + error_code __m_ec; + file_status __st(__get_ft(&__m_ec)); + __handle_error("in directory_entry::file_size", __ec, __m_ec); + if (_VSTD_FS::exists(__st) && !_VSTD_FS::is_regular_file(__st)) { + errc __err_kind = _VSTD_FS::is_directory(__st) ? errc::is_a_directory + : errc::not_supported; + __handle_error("in directory_entry::file_size", __ec, + make_error_code(__err_kind)); + } + return __data_.__size_; + } + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + uintmax_t __get_nlink(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterNonSymlink: + case _IterSymlink: + case _RefreshSymlinkUnresolved: + return _VSTD_FS::__hard_link_count(__p_, __ec); + case _RefreshSymlink: + case _RefreshNonSymlink: { + error_code __m_ec; + (void)__get_ft(&__m_ec); + __handle_error("in directory_entry::hard_link_count", __ec, __m_ec); + return __data_.__nlink_; + } + } + __libcpp_unreachable(); + } + + _LIBCPP_INLINE_VISIBILITY + file_time_type __get_write_time(error_code* __ec = nullptr) const { + switch (__data_.__cache_type_) { + case _Empty: + case _IterNonSymlink: + case _IterSymlink: + case _RefreshSymlinkUnresolved: + return _VSTD_FS::__last_write_time(__p_, __ec); + case _RefreshSymlink: + case _RefreshNonSymlink: { + error_code __m_ec; + file_status __st(__get_ft(&__m_ec)); + __handle_error("in directory_entry::last_write_time", __ec, __m_ec); + if (_VSTD_FS::exists(__st) && + __data_.__write_time_ == file_time_type::min()) + __handle_error("in directory_entry::last_write_time", __ec, + make_error_code(errc::value_too_large)); + return __data_.__write_time_; + } + } + __libcpp_unreachable(); + } + +private: + _Path __p_; + __cached_data __data_; +}; + +class __dir_element_proxy { +public: + inline _LIBCPP_INLINE_VISIBILITY directory_entry operator*() { + return _VSTD::move(__elem_); + } + +private: + friend class directory_iterator; + friend class recursive_directory_iterator; + _LIBCPP_HIDE_FROM_ABI explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {} + _LIBCPP_HIDE_FROM_ABI __dir_element_proxy(__dir_element_proxy&& __o) + : __elem_(_VSTD::move(__o.__elem_)) {} + directory_entry __elem_; +}; + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H diff --git a/lib/libcxx/include/__filesystem/directory_iterator.h b/lib/libcxx/include/__filesystem/directory_iterator.h new file mode 100644 index 0000000..632c2c8 --- /dev/null +++ b/lib/libcxx/include/__filesystem/directory_iterator.h @@ -0,0 +1,169 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_DIRECTORY_ITERATOR_H +#define _LIBCPP___FILESYSTEM_DIRECTORY_ITERATOR_H + +#include <__assert> +#include <__availability> +#include <__config> +#include <__filesystem/directory_entry.h> +#include <__filesystem/directory_options.h> +#include <__filesystem/path.h> +#include <__iterator/default_sentinel.h> +#include <__iterator/iterator_traits.h> +#include <__memory/shared_ptr.h> +#include <__ranges/enable_borrowed_range.h> +#include <__ranges/enable_view.h> +#include <__system_error/error_code.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +class _LIBCPP_HIDDEN __dir_stream; +class directory_iterator { +public: + typedef directory_entry value_type; + typedef ptrdiff_t difference_type; + typedef value_type const* pointer; + typedef value_type const& reference; + typedef input_iterator_tag iterator_category; + +public: + //ctor & dtor + _LIBCPP_HIDE_FROM_ABI + directory_iterator() noexcept {} + + _LIBCPP_HIDE_FROM_ABI + explicit directory_iterator(const path& __p) + : directory_iterator(__p, nullptr) {} + + _LIBCPP_HIDE_FROM_ABI + directory_iterator(const path& __p, directory_options __opts) + : directory_iterator(__p, nullptr, __opts) {} + + _LIBCPP_HIDE_FROM_ABI + directory_iterator(const path& __p, error_code& __ec) + : directory_iterator(__p, &__ec) {} + + _LIBCPP_HIDE_FROM_ABI + directory_iterator(const path& __p, directory_options __opts, + error_code& __ec) + : directory_iterator(__p, &__ec, __opts) {} + + _LIBCPP_HIDE_FROM_ABI directory_iterator(const directory_iterator&) = default; + _LIBCPP_HIDE_FROM_ABI directory_iterator(directory_iterator&&) = default; + _LIBCPP_HIDE_FROM_ABI directory_iterator& operator=(const directory_iterator&) = default; + + _LIBCPP_HIDE_FROM_ABI + directory_iterator& operator=(directory_iterator&& __o) noexcept { + // non-default implementation provided to support self-move assign. + if (this != &__o) { + __imp_ = _VSTD::move(__o.__imp_); + } + return *this; + } + + _LIBCPP_HIDE_FROM_ABI ~directory_iterator() = default; + + _LIBCPP_HIDE_FROM_ABI + const directory_entry& operator*() const { + _LIBCPP_ASSERT_UNCATEGORIZED(__imp_, "The end iterator cannot be dereferenced"); + return __dereference(); + } + + _LIBCPP_HIDE_FROM_ABI + const directory_entry* operator->() const { return &**this; } + + _LIBCPP_HIDE_FROM_ABI + directory_iterator& operator++() { return __increment(); } + + _LIBCPP_HIDE_FROM_ABI + __dir_element_proxy operator++(int) { + __dir_element_proxy __p(**this); + __increment(); + return __p; + } + + _LIBCPP_HIDE_FROM_ABI + directory_iterator& increment(error_code& __ec) { return __increment(&__ec); } + +# if _LIBCPP_STD_VER >= 20 + + _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const noexcept { return *this == directory_iterator(); } + +# endif + +private: + inline _LIBCPP_HIDE_FROM_ABI friend bool + operator==(const directory_iterator& __lhs, + const directory_iterator& __rhs) noexcept; + + // construct the dir_stream + _LIBCPP_EXPORTED_FROM_ABI directory_iterator(const path&, error_code*, directory_options = directory_options::none); + + _LIBCPP_EXPORTED_FROM_ABI directory_iterator& __increment(error_code* __ec = nullptr); + + _LIBCPP_EXPORTED_FROM_ABI const directory_entry& __dereference() const; + +private: + shared_ptr<__dir_stream> __imp_; +}; + +inline _LIBCPP_HIDE_FROM_ABI bool +operator==(const directory_iterator& __lhs, + const directory_iterator& __rhs) noexcept { + return __lhs.__imp_ == __rhs.__imp_; +} + +inline _LIBCPP_HIDE_FROM_ABI bool +operator!=(const directory_iterator& __lhs, + const directory_iterator& __rhs) noexcept { + return !(__lhs == __rhs); +} + +// enable directory_iterator range-based for statements +inline _LIBCPP_HIDE_FROM_ABI directory_iterator +begin(directory_iterator __iter) noexcept { + return __iter; +} + +inline _LIBCPP_HIDE_FROM_ABI directory_iterator +end(directory_iterator) noexcept { + return directory_iterator(); +} + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#if _LIBCPP_STD_VER >= 20 + +template <> +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline constexpr bool _VSTD::ranges::enable_borrowed_range<_VSTD_FS::directory_iterator> = true; + +template <> +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline constexpr bool _VSTD::ranges::enable_view<_VSTD_FS::directory_iterator> = true; + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +#endif // _LIBCPP___FILESYSTEM_DIRECTORY_ITERATOR_H diff --git a/lib/libcxx/include/__filesystem/directory_options.h b/lib/libcxx/include/__filesystem/directory_options.h new file mode 100644 index 0000000..4c323cc --- /dev/null +++ b/lib/libcxx/include/__filesystem/directory_options.h @@ -0,0 +1,78 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_DIRECTORY_OPTIONS_H +#define _LIBCPP___FILESYSTEM_DIRECTORY_OPTIONS_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +enum class _LIBCPP_ENUM_VIS directory_options : unsigned char { + none = 0, + follow_directory_symlink = 1, + skip_permission_denied = 2 +}; + +_LIBCPP_INLINE_VISIBILITY +inline constexpr directory_options operator&(directory_options __lhs, + directory_options __rhs) { + return static_cast(static_cast(__lhs) & + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr directory_options operator|(directory_options __lhs, + directory_options __rhs) { + return static_cast(static_cast(__lhs) | + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr directory_options operator^(directory_options __lhs, + directory_options __rhs) { + return static_cast(static_cast(__lhs) ^ + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr directory_options operator~(directory_options __lhs) { + return static_cast(~static_cast(__lhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline directory_options& operator&=(directory_options& __lhs, + directory_options __rhs) { + return __lhs = __lhs & __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline directory_options& operator|=(directory_options& __lhs, + directory_options __rhs) { + return __lhs = __lhs | __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline directory_options& operator^=(directory_options& __lhs, + directory_options __rhs) { + return __lhs = __lhs ^ __rhs; +} + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_DIRECTORY_OPTIONS_H diff --git a/lib/libcxx/include/__filesystem/file_status.h b/lib/libcxx/include/__filesystem/file_status.h new file mode 100644 index 0000000..0cf405b --- /dev/null +++ b/lib/libcxx/include/__filesystem/file_status.h @@ -0,0 +1,76 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_FILE_STATUS_H +#define _LIBCPP___FILESYSTEM_FILE_STATUS_H + +#include <__availability> +#include <__config> +#include <__filesystem/file_type.h> +#include <__filesystem/perms.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +class _LIBCPP_EXPORTED_FROM_ABI file_status { +public: + // constructors + _LIBCPP_INLINE_VISIBILITY + file_status() noexcept : file_status(file_type::none) {} + _LIBCPP_INLINE_VISIBILITY + explicit file_status(file_type __ft, perms __prms = perms::unknown) noexcept + : __ft_(__ft), + __prms_(__prms) {} + + _LIBCPP_HIDE_FROM_ABI file_status(const file_status&) noexcept = default; + _LIBCPP_HIDE_FROM_ABI file_status(file_status&&) noexcept = default; + + _LIBCPP_INLINE_VISIBILITY + ~file_status() {} + + _LIBCPP_HIDE_FROM_ABI file_status& operator=(const file_status&) noexcept = default; + _LIBCPP_HIDE_FROM_ABI file_status& operator=(file_status&&) noexcept = default; + + // observers + _LIBCPP_INLINE_VISIBILITY + file_type type() const noexcept { return __ft_; } + + _LIBCPP_INLINE_VISIBILITY + perms permissions() const noexcept { return __prms_; } + + // modifiers + _LIBCPP_INLINE_VISIBILITY + void type(file_type __ft) noexcept { __ft_ = __ft; } + + _LIBCPP_INLINE_VISIBILITY + void permissions(perms __p) noexcept { __prms_ = __p; } + +# if _LIBCPP_STD_VER >= 20 + + _LIBCPP_HIDE_FROM_ABI friend bool operator==(const file_status& __lhs, const file_status& __rhs) noexcept { + return __lhs.type() == __rhs.type() && __lhs.permissions() == __rhs.permissions(); + } + +# endif + +private: + file_type __ft_; + perms __prms_; +}; + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_FILE_STATUS_H diff --git a/lib/libcxx/include/__filesystem/file_time_type.h b/lib/libcxx/include/__filesystem/file_time_type.h new file mode 100644 index 0000000..7c4932e --- /dev/null +++ b/lib/libcxx/include/__filesystem/file_time_type.h @@ -0,0 +1,32 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_FILE_TIME_TYPE_H +#define _LIBCPP___FILESYSTEM_FILE_TIME_TYPE_H + +#include <__availability> +#include <__chrono/file_clock.h> +#include <__chrono/time_point.h> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +typedef chrono::time_point<_FilesystemClock> file_time_type; + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_FILE_TIME_TYPE_H diff --git a/lib/libcxx/include/__filesystem/file_type.h b/lib/libcxx/include/__filesystem/file_type.h new file mode 100644 index 0000000..c756a05 --- /dev/null +++ b/lib/libcxx/include/__filesystem/file_type.h @@ -0,0 +1,43 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_FILE_TYPE_H +#define _LIBCPP___FILESYSTEM_FILE_TYPE_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +// On Windows, the library never identifies files as block, character, fifo +// or socket. +enum class _LIBCPP_ENUM_VIS file_type : signed char { + none = 0, + not_found = -1, + regular = 1, + directory = 2, + symlink = 3, + block = 4, + character = 5, + fifo = 6, + socket = 7, + unknown = 8 +}; + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_FILE_TYPE_H diff --git a/lib/libcxx/include/__filesystem/filesystem_error.h b/lib/libcxx/include/__filesystem/filesystem_error.h new file mode 100644 index 0000000..713cc35 --- /dev/null +++ b/lib/libcxx/include/__filesystem/filesystem_error.h @@ -0,0 +1,91 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H +#define _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H + +#include <__availability> +#include <__config> +#include <__filesystem/path.h> +#include <__memory/shared_ptr.h> +#include <__system_error/error_code.h> +#include <__system_error/system_error.h> +#include <__utility/forward.h> +#include <__verbose_abort> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +class _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error { +public: + _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec) + : system_error(__ec, __what), __storage_(make_shared<_Storage>(path(), path())) { + __create_what(0); + } + + _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec) + : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, path())) { + __create_what(1); + } + + _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec) + : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, __p2)) { + __create_what(2); + } + + _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; } + + _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; } + + _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default; + ~filesystem_error() override; // key function + + _LIBCPP_HIDE_FROM_ABI_VIRTUAL + const char* what() const noexcept override { return __storage_->__what_.c_str(); } + + void __create_what(int __num_paths); + +private: + struct _LIBCPP_HIDDEN _Storage { + _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} + + path __p1_; + path __p2_; + string __what_; + }; + shared_ptr<_Storage> __storage_; +}; + +# ifndef _LIBCPP_HAS_NO_EXCEPTIONS +template +_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void +__throw_filesystem_error(_Args&&... __args) { + throw filesystem_error(_VSTD::forward<_Args>(__args)...); +} +# else +template +_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void +__throw_filesystem_error(_Args&&...) { + _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode"); +} +# endif + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H diff --git a/lib/libcxx/include/__filesystem/operations.h b/lib/libcxx/include/__filesystem/operations.h new file mode 100644 index 0000000..71b3fb8 --- /dev/null +++ b/lib/libcxx/include/__filesystem/operations.h @@ -0,0 +1,201 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_OPERATIONS_H +#define _LIBCPP___FILESYSTEM_OPERATIONS_H + +#include <__availability> +#include <__chrono/time_point.h> +#include <__config> +#include <__filesystem/copy_options.h> +#include <__filesystem/file_status.h> +#include <__filesystem/file_time_type.h> +#include <__filesystem/file_type.h> +#include <__filesystem/path.h> +#include <__filesystem/perm_options.h> +#include <__filesystem/perms.h> +#include <__filesystem/space_info.h> +#include <__system_error/error_code.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +_LIBCPP_EXPORTED_FROM_ABI path __absolute(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI path __canonical(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __copy_file(const path& __from, const path& __to, copy_options __opt, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __copy_symlink(const path& __existing_symlink, const path& __new_symlink, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __copy(const path& __from, const path& __to, copy_options __opt, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __create_directories(const path&, error_code* = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __create_directory_symlink(const path& __to, const path& __new_symlink, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __create_directory(const path&, error_code* = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __create_directory(const path&, const path& __attributes, error_code* = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __create_hard_link(const path& __to, const path& __new_hard_link, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __create_symlink(const path& __to, const path& __new_symlink, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI path __current_path(error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __current_path(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __equivalent(const path&, const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI file_status __status(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI uintmax_t __file_size(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI uintmax_t __hard_link_count(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI file_status __symlink_status(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI file_time_type __last_write_time(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __last_write_time(const path&, file_time_type __new_time, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI path __weakly_canonical(path const& __p, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI path __read_symlink(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI uintmax_t __remove_all(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI bool __remove(const path&, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __rename(const path& __from, const path& __to, error_code* __ec = nullptr); +_LIBCPP_EXPORTED_FROM_ABI void __resize_file(const path&, uintmax_t __size, error_code* = nullptr); +_LIBCPP_EXPORTED_FROM_ABI path __temp_directory_path(error_code* __ec = nullptr); + +inline _LIBCPP_HIDE_FROM_ABI path absolute(const path& __p) { return __absolute(__p); } +inline _LIBCPP_HIDE_FROM_ABI path absolute(const path& __p, error_code& __ec) { return __absolute(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI path canonical(const path& __p) { return __canonical(__p); } +inline _LIBCPP_HIDE_FROM_ABI path canonical(const path& __p, error_code& __ec) { return __canonical(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool copy_file(const path& __from, const path& __to) { return __copy_file(__from, __to, copy_options::none); } +inline _LIBCPP_HIDE_FROM_ABI bool copy_file(const path& __from, const path& __to, error_code& __ec) { return __copy_file(__from, __to, copy_options::none, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool copy_file(const path& __from, const path& __to, copy_options __opt) { return __copy_file(__from, __to, __opt); } +inline _LIBCPP_HIDE_FROM_ABI bool copy_file(const path& __from, const path& __to, copy_options __opt, error_code& __ec) { return __copy_file(__from, __to, __opt, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void copy_symlink(const path& __from, const path& __to) { __copy_symlink(__from, __to); } +inline _LIBCPP_HIDE_FROM_ABI void copy_symlink(const path& __from, const path& __to, error_code& __ec) noexcept { __copy_symlink(__from, __to, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void copy(const path& __from, const path& __to) { __copy(__from, __to, copy_options::none); } +inline _LIBCPP_HIDE_FROM_ABI void copy(const path& __from, const path& __to, error_code& __ec) { __copy(__from, __to, copy_options::none, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void copy(const path& __from, const path& __to, copy_options __opt) { __copy(__from, __to, __opt); } +inline _LIBCPP_HIDE_FROM_ABI void copy(const path& __from, const path& __to, copy_options __opt, error_code& __ec) { __copy(__from, __to, __opt, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directories(const path& __p) { return __create_directories(__p); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directories(const path& __p, error_code& __ec) { return __create_directories(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void create_directory_symlink(const path& __target, const path& __link) { __create_directory_symlink(__target, __link); } +inline _LIBCPP_HIDE_FROM_ABI void create_directory_symlink(const path& __target, const path& __link, error_code& __ec) noexcept { __create_directory_symlink(__target, __link, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directory(const path& __p) { return __create_directory(__p); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directory(const path& __p, error_code& __ec) noexcept { return __create_directory(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directory(const path& __p, const path& __attrs) { return __create_directory(__p, __attrs); } +inline _LIBCPP_HIDE_FROM_ABI bool create_directory(const path& __p, const path& __attrs, error_code& __ec) noexcept { return __create_directory(__p, __attrs, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void create_hard_link(const path& __target, const path& __link) { __create_hard_link(__target, __link); } +inline _LIBCPP_HIDE_FROM_ABI void create_hard_link(const path& __target, const path& __link, error_code& __ec) noexcept { __create_hard_link(__target, __link, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void create_symlink(const path& __target, const path& __link) { __create_symlink(__target, __link); } +inline _LIBCPP_HIDE_FROM_ABI void create_symlink(const path& __target, const path& __link, error_code& __ec) noexcept { return __create_symlink(__target, __link, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI path current_path() { return __current_path(); } +inline _LIBCPP_HIDE_FROM_ABI path current_path(error_code& __ec) { return __current_path(&__ec); } +inline _LIBCPP_HIDE_FROM_ABI void current_path(const path& __p) { __current_path(__p); } +inline _LIBCPP_HIDE_FROM_ABI void current_path(const path& __p, error_code& __ec) noexcept { __current_path(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool equivalent(const path& __p1, const path& __p2) { return __equivalent(__p1, __p2); } +inline _LIBCPP_HIDE_FROM_ABI bool equivalent(const path& __p1, const path& __p2, error_code& __ec) noexcept { return __equivalent(__p1, __p2, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool status_known(file_status __s) noexcept { return __s.type() != file_type::none; } +inline _LIBCPP_HIDE_FROM_ABI bool exists(file_status __s) noexcept { return status_known(__s) && __s.type() != file_type::not_found; } +inline _LIBCPP_HIDE_FROM_ABI bool exists(const path& __p) { return exists(__status(__p)); } + +inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p, error_code& __ec) noexcept { + auto __s = __status(__p, &__ec); + if (status_known(__s)) + __ec.clear(); + return exists(__s); +} + +inline _LIBCPP_HIDE_FROM_ABI uintmax_t file_size(const path& __p) { return __file_size(__p); } +inline _LIBCPP_HIDE_FROM_ABI uintmax_t file_size(const path& __p, error_code& __ec) noexcept { return __file_size(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI uintmax_t hard_link_count(const path& __p) { return __hard_link_count(__p); } +inline _LIBCPP_HIDE_FROM_ABI uintmax_t hard_link_count(const path& __p, error_code& __ec) noexcept { return __hard_link_count(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool is_block_file(file_status __s) noexcept { return __s.type() == file_type::block; } +inline _LIBCPP_HIDE_FROM_ABI bool is_block_file(const path& __p) { return is_block_file(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_block_file(const path& __p, error_code& __ec) noexcept { return is_block_file(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_character_file(file_status __s) noexcept { return __s.type() == file_type::character; } +inline _LIBCPP_HIDE_FROM_ABI bool is_character_file(const path& __p) { return is_character_file(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_character_file(const path& __p, error_code& __ec) noexcept { return is_character_file(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_directory(file_status __s) noexcept { return __s.type() == file_type::directory; } +inline _LIBCPP_HIDE_FROM_ABI bool is_directory(const path& __p) { return is_directory(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_directory(const path& __p, error_code& __ec) noexcept { return is_directory(__status(__p, &__ec)); } +_LIBCPP_EXPORTED_FROM_ABI bool __fs_is_empty(const path& __p, error_code* __ec = nullptr); +inline _LIBCPP_HIDE_FROM_ABI bool is_empty(const path& __p) { return __fs_is_empty(__p); } +inline _LIBCPP_HIDE_FROM_ABI bool is_empty(const path& __p, error_code& __ec) { return __fs_is_empty(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool is_fifo(file_status __s) noexcept { return __s.type() == file_type::fifo; } +inline _LIBCPP_HIDE_FROM_ABI bool is_fifo(const path& __p) { return is_fifo(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_fifo(const path& __p, error_code& __ec) noexcept { return is_fifo(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_regular_file(file_status __s) noexcept { return __s.type() == file_type::regular; } +inline _LIBCPP_HIDE_FROM_ABI bool is_regular_file(const path& __p) { return is_regular_file(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_regular_file(const path& __p, error_code& __ec) noexcept { return is_regular_file(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_symlink(file_status __s) noexcept { return __s.type() == file_type::symlink; } +inline _LIBCPP_HIDE_FROM_ABI bool is_symlink(const path& __p) { return is_symlink(__symlink_status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_symlink(const path& __p, error_code& __ec) noexcept { return is_symlink(__symlink_status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_other(file_status __s) noexcept { return exists(__s) && !is_regular_file(__s) && !is_directory(__s) && !is_symlink(__s); } +inline _LIBCPP_HIDE_FROM_ABI bool is_other(const path& __p) { return is_other(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_other(const path& __p, error_code& __ec) noexcept { return is_other(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_socket(file_status __s) noexcept { return __s.type() == file_type::socket; } +inline _LIBCPP_HIDE_FROM_ABI bool is_socket(const path& __p) { return is_socket(__status(__p)); } +inline _LIBCPP_HIDE_FROM_ABI bool is_socket(const path& __p, error_code& __ec) noexcept { return is_socket(__status(__p, &__ec)); } +inline _LIBCPP_HIDE_FROM_ABI file_time_type last_write_time(const path& __p) { return __last_write_time(__p); } +inline _LIBCPP_HIDE_FROM_ABI file_time_type last_write_time(const path& __p, error_code& __ec) noexcept { return __last_write_time(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void last_write_time(const path& __p, file_time_type __t) { __last_write_time(__p, __t); } +inline _LIBCPP_HIDE_FROM_ABI void last_write_time(const path& __p, file_time_type __t, error_code& __ec) noexcept { __last_write_time(__p, __t, &__ec); } +_LIBCPP_EXPORTED_FROM_ABI void __permissions(const path&, perms, perm_options, error_code* = nullptr); +inline _LIBCPP_HIDE_FROM_ABI void permissions(const path& __p, perms __prms, perm_options __opts = perm_options::replace) { __permissions(__p, __prms, __opts); } +inline _LIBCPP_HIDE_FROM_ABI void permissions(const path& __p, perms __prms, error_code& __ec) noexcept { __permissions(__p, __prms, perm_options::replace, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void permissions(const path& __p, perms __prms, perm_options __opts, error_code& __ec) { __permissions(__p, __prms, __opts, &__ec); } + +inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p, const path& __base, error_code& __ec) { + path __tmp = __weakly_canonical(__p, &__ec); + if (__ec) + return {}; + path __tmp_base = __weakly_canonical(__base, &__ec); + if (__ec) + return {}; + return __tmp.lexically_proximate(__tmp_base); +} + +inline _LIBCPP_HIDE_FROM_ABI path proximate(const path& __p, error_code& __ec) { return proximate(__p, current_path(), __ec); } +inline _LIBCPP_HIDE_FROM_ABI path proximate(const path& __p, const path& __base = current_path()) { return __weakly_canonical(__p).lexically_proximate(__weakly_canonical(__base)); } +inline _LIBCPP_HIDE_FROM_ABI path read_symlink(const path& __p) { return __read_symlink(__p); } +inline _LIBCPP_HIDE_FROM_ABI path read_symlink(const path& __p, error_code& __ec) { return __read_symlink(__p, &__ec); } + +inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p, const path& __base, error_code& __ec) { + path __tmp = __weakly_canonical(__p, &__ec); + if (__ec) + return path(); + path __tmpbase = __weakly_canonical(__base, &__ec); + if (__ec) + return path(); + return __tmp.lexically_relative(__tmpbase); +} + +inline _LIBCPP_HIDE_FROM_ABI path relative(const path& __p, error_code& __ec) { return relative(__p, current_path(), __ec); } +inline _LIBCPP_HIDE_FROM_ABI path relative(const path& __p, const path& __base = current_path()) { return __weakly_canonical(__p).lexically_relative(__weakly_canonical(__base)); } +inline _LIBCPP_HIDE_FROM_ABI uintmax_t remove_all(const path& __p) { return __remove_all(__p); } +inline _LIBCPP_HIDE_FROM_ABI uintmax_t remove_all(const path& __p, error_code& __ec) { return __remove_all(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI bool remove(const path& __p) { return __remove(__p); } +inline _LIBCPP_HIDE_FROM_ABI bool remove(const path& __p, error_code& __ec) noexcept { return __remove(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void rename(const path& __from, const path& __to) { return __rename(__from, __to); } +inline _LIBCPP_HIDE_FROM_ABI void rename(const path& __from, const path& __to, error_code& __ec) noexcept { return __rename(__from, __to, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI void resize_file(const path& __p, uintmax_t __ns) { return __resize_file(__p, __ns); } +inline _LIBCPP_HIDE_FROM_ABI void resize_file(const path& __p, uintmax_t __ns, error_code& __ec) noexcept { return __resize_file(__p, __ns, &__ec); } +_LIBCPP_EXPORTED_FROM_ABI space_info __space(const path&, error_code* __ec = nullptr); +inline _LIBCPP_HIDE_FROM_ABI space_info space(const path& __p) { return __space(__p); } +inline _LIBCPP_HIDE_FROM_ABI space_info space(const path& __p, error_code& __ec) noexcept { return __space(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI file_status status(const path& __p) { return __status(__p); } +inline _LIBCPP_HIDE_FROM_ABI file_status status(const path& __p, error_code& __ec) noexcept { return __status(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI file_status symlink_status(const path& __p) { return __symlink_status(__p); } +inline _LIBCPP_HIDE_FROM_ABI file_status symlink_status(const path& __p, error_code& __ec) noexcept { return __symlink_status(__p, &__ec); } +inline _LIBCPP_HIDE_FROM_ABI path temp_directory_path() { return __temp_directory_path(); } +inline _LIBCPP_HIDE_FROM_ABI path temp_directory_path(error_code& __ec) { return __temp_directory_path(&__ec); } +inline _LIBCPP_HIDE_FROM_ABI path weakly_canonical(path const& __p) { return __weakly_canonical(__p); } +inline _LIBCPP_HIDE_FROM_ABI path weakly_canonical(path const& __p, error_code& __ec) { return __weakly_canonical(__p, &__ec); } + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +#endif // _LIBCPP___FILESYSTEM_OPERATIONS_H diff --git a/lib/libcxx/include/__filesystem/path.h b/lib/libcxx/include/__filesystem/path.h new file mode 100644 index 0000000..77699c5 --- /dev/null +++ b/lib/libcxx/include/__filesystem/path.h @@ -0,0 +1,1105 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_PATH_H +#define _LIBCPP___FILESYSTEM_PATH_H + +#include <__algorithm/replace.h> +#include <__algorithm/replace_copy.h> +#include <__availability> +#include <__config> +#include <__functional/hash.h> +#include <__functional/unary_function.h> +#include <__fwd/hash.h> +#include <__iterator/back_insert_iterator.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/decay.h> +#include <__type_traits/is_pointer.h> +#include <__type_traits/remove_const.h> +#include <__type_traits/remove_pointer.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) +# include // for quoted +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +template +struct __can_convert_char { + static const bool value = false; +}; +template +struct __can_convert_char : public __can_convert_char<_Tp> {}; +template <> +struct __can_convert_char { + static const bool value = true; + using __char_type = char; +}; +template <> +struct __can_convert_char { + static const bool value = true; + using __char_type = wchar_t; +}; +#ifndef _LIBCPP_HAS_NO_CHAR8_T +template <> +struct __can_convert_char { + static const bool value = true; + using __char_type = char8_t; +}; +#endif +template <> +struct __can_convert_char { + static const bool value = true; + using __char_type = char16_t; +}; +template <> +struct __can_convert_char { + static const bool value = true; + using __char_type = char32_t; +}; + +template +_LIBCPP_HIDE_FROM_ABI +typename enable_if<__can_convert_char<_ECharT>::value, bool>::type +__is_separator(_ECharT __e) { +#if defined(_LIBCPP_WIN32API) + return __e == _ECharT('/') || __e == _ECharT('\\'); +#else + return __e == _ECharT('/'); +#endif +} + +#ifndef _LIBCPP_HAS_NO_CHAR8_T +typedef u8string __u8_string; +#else +typedef string __u8_string; +#endif + +struct _NullSentinel {}; + +template +using _Void = void; + +template +struct __is_pathable_string : public false_type {}; + +template +struct __is_pathable_string< + basic_string<_ECharT, _Traits, _Alloc>, + _Void::__char_type> > + : public __can_convert_char<_ECharT> { + using _Str = basic_string<_ECharT, _Traits, _Alloc>; + using _Base = __can_convert_char<_ECharT>; + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_end(_Str const& __s) { + return __s.data() + __s.length(); + } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT __first_or_null(_Str const& __s) { + return __s.empty() ? _ECharT{} : __s[0]; + } +}; + +template +struct __is_pathable_string< + basic_string_view<_ECharT, _Traits>, + _Void::__char_type> > + : public __can_convert_char<_ECharT> { + using _Str = basic_string_view<_ECharT, _Traits>; + using _Base = __can_convert_char<_ECharT>; + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_end(_Str const& __s) { + return __s.data() + __s.length(); + } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT __first_or_null(_Str const& __s) { + return __s.empty() ? _ECharT{} : __s[0]; + } +}; + +template , + class _UnqualPtrType = + __remove_const_t<__remove_pointer_t<_DS> >, + bool _IsCharPtr = is_pointer<_DS>::value&& + __can_convert_char<_UnqualPtrType>::value> +struct __is_pathable_char_array : false_type {}; + +template +struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true> + : __can_convert_char<__remove_const_t<_ECharT> > { + using _Base = __can_convert_char<__remove_const_t<_ECharT> >; + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_begin(const _ECharT* __b) { return __b; } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT const* __range_end(const _ECharT* __b) { + using _Iter = const _ECharT*; + const _ECharT __sentinel = _ECharT{}; + _Iter __e = __b; + for (; *__e != __sentinel; ++__e) + ; + return __e; + } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT __first_or_null(const _ECharT* __b) { return *__b; } +}; + +template ::value, + class = void> +struct __is_pathable_iter : false_type {}; + +template +struct __is_pathable_iter< + _Iter, true, + _Void::value_type>::__char_type> > + : __can_convert_char::value_type> { + using _ECharT = typename iterator_traits<_Iter>::value_type; + using _Base = __can_convert_char<_ECharT>; + + _LIBCPP_HIDE_FROM_ABI + static _Iter __range_begin(_Iter __b) { return __b; } + + _LIBCPP_HIDE_FROM_ABI + static _NullSentinel __range_end(_Iter) { return _NullSentinel{}; } + + _LIBCPP_HIDE_FROM_ABI + static _ECharT __first_or_null(_Iter __b) { return *__b; } +}; + +template ::value, + bool _IsCharIterT = __is_pathable_char_array<_Tp>::value, + bool _IsIterT = !_IsCharIterT && __is_pathable_iter<_Tp>::value> +struct __is_pathable : false_type { + static_assert(!_IsStringT && !_IsCharIterT && !_IsIterT, "Must all be false"); +}; + +template +struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {}; + +template +struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> { +}; + +template +struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {}; + +#if defined(_LIBCPP_WIN32API) +typedef wstring __path_string; +typedef wchar_t __path_value; +#else +typedef string __path_string; +typedef char __path_value; +#endif + +#if defined(_LIBCPP_WIN32API) +_LIBCPP_EXPORTED_FROM_ABI size_t __wide_to_char(const wstring&, char*, size_t); +_LIBCPP_EXPORTED_FROM_ABI size_t __char_to_wide(const string&, wchar_t*, size_t); +#endif + +template +struct _PathCVT; + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) +template +struct _PathCVT { + static_assert(__can_convert_char<_ECharT>::value, + "Char type not convertible"); + + typedef __narrow_to_utf8 _Narrower; +#if defined(_LIBCPP_WIN32API) + typedef __widen_from_utf8 _Widener; +#endif + + _LIBCPP_HIDE_FROM_ABI + static void __append_range(__path_string& __dest, _ECharT const* __b, + _ECharT const* __e) { +#if defined(_LIBCPP_WIN32API) + string __utf8; + _Narrower()(back_inserter(__utf8), __b, __e); + _Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size()); +#else + _Narrower()(back_inserter(__dest), __b, __e); +#endif + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) { + static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload"); + if (__b == __e) + return; + basic_string<_ECharT> __tmp(__b, __e); +#if defined(_LIBCPP_WIN32API) + string __utf8; + _Narrower()(back_inserter(__utf8), __tmp.data(), + __tmp.data() + __tmp.length()); + _Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size()); +#else + _Narrower()(back_inserter(__dest), __tmp.data(), + __tmp.data() + __tmp.length()); +#endif + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) { + static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload"); + const _ECharT __sentinel = _ECharT{}; + if (*__b == __sentinel) + return; + basic_string<_ECharT> __tmp; + for (; *__b != __sentinel; ++__b) + __tmp.push_back(*__b); +#if defined(_LIBCPP_WIN32API) + string __utf8; + _Narrower()(back_inserter(__utf8), __tmp.data(), + __tmp.data() + __tmp.length()); + _Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size()); +#else + _Narrower()(back_inserter(__dest), __tmp.data(), + __tmp.data() + __tmp.length()); +#endif + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_source(__path_string& __dest, _Source const& __s) { + using _Traits = __is_pathable<_Source>; + __append_range(__dest, _Traits::__range_begin(__s), + _Traits::__range_end(__s)); + } +}; +#endif // !_LIBCPP_HAS_NO_LOCALIZATION + +template <> +struct _PathCVT<__path_value> { + + template + _LIBCPP_HIDE_FROM_ABI + static typename enable_if<__has_exactly_input_iterator_category<_Iter>::value>::type + __append_range(__path_string& __dest, _Iter __b, _Iter __e) { + for (; __b != __e; ++__b) + __dest.push_back(*__b); + } + + template + _LIBCPP_HIDE_FROM_ABI + static typename enable_if<__has_forward_iterator_category<_Iter>::value>::type + __append_range(__path_string& __dest, _Iter __b, _Iter __e) { + __dest.append(__b, __e); + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) { + const char __sentinel = char{}; + for (; *__b != __sentinel; ++__b) + __dest.push_back(*__b); + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_source(__path_string& __dest, _Source const& __s) { + using _Traits = __is_pathable<_Source>; + __append_range(__dest, _Traits::__range_begin(__s), + _Traits::__range_end(__s)); + } +}; + +#if defined(_LIBCPP_WIN32API) +template <> +struct _PathCVT { + + _LIBCPP_HIDE_FROM_ABI + static void + __append_string(__path_string& __dest, const basic_string &__str) { + size_t __size = __char_to_wide(__str, nullptr, 0); + size_t __pos = __dest.size(); + __dest.resize(__pos + __size); + __char_to_wide(__str, const_cast<__path_value*>(__dest.data()) + __pos, __size); + } + + template + _LIBCPP_HIDE_FROM_ABI + static typename enable_if<__has_exactly_input_iterator_category<_Iter>::value>::type + __append_range(__path_string& __dest, _Iter __b, _Iter __e) { + basic_string __tmp(__b, __e); + __append_string(__dest, __tmp); + } + + template + _LIBCPP_HIDE_FROM_ABI + static typename enable_if<__has_forward_iterator_category<_Iter>::value>::type + __append_range(__path_string& __dest, _Iter __b, _Iter __e) { + basic_string __tmp(__b, __e); + __append_string(__dest, __tmp); + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) { + const char __sentinel = char{}; + basic_string __tmp; + for (; *__b != __sentinel; ++__b) + __tmp.push_back(*__b); + __append_string(__dest, __tmp); + } + + template + _LIBCPP_HIDE_FROM_ABI + static void __append_source(__path_string& __dest, _Source const& __s) { + using _Traits = __is_pathable<_Source>; + __append_range(__dest, _Traits::__range_begin(__s), + _Traits::__range_end(__s)); + } +}; + +template +struct _PathExport { + typedef __narrow_to_utf8 _Narrower; + typedef __widen_from_utf8 _Widener; + + template + _LIBCPP_HIDE_FROM_ABI + static void __append(_Str& __dest, const __path_string& __src) { + string __utf8; + _Narrower()(back_inserter(__utf8), __src.data(), __src.data() + __src.size()); + _Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size()); + } +}; + +template <> +struct _PathExport { + template + _LIBCPP_HIDE_FROM_ABI + static void __append(_Str& __dest, const __path_string& __src) { + size_t __size = __wide_to_char(__src, nullptr, 0); + size_t __pos = __dest.size(); + __dest.resize(__size); + __wide_to_char(__src, const_cast(__dest.data()) + __pos, __size); + } +}; + +template <> +struct _PathExport { + template + _LIBCPP_HIDE_FROM_ABI + static void __append(_Str& __dest, const __path_string& __src) { + __dest.append(__src.begin(), __src.end()); + } +}; + +template <> +struct _PathExport { + template + _LIBCPP_HIDE_FROM_ABI + static void __append(_Str& __dest, const __path_string& __src) { + __dest.append(__src.begin(), __src.end()); + } +}; + +#ifndef _LIBCPP_HAS_NO_CHAR8_T +template <> +struct _PathExport { + typedef __narrow_to_utf8 _Narrower; + + template + _LIBCPP_HIDE_FROM_ABI + static void __append(_Str& __dest, const __path_string& __src) { + _Narrower()(back_inserter(__dest), __src.data(), __src.data() + __src.size()); + } +}; +#endif /* !_LIBCPP_HAS_NO_CHAR8_T */ +#endif /* _LIBCPP_WIN32API */ + +class _LIBCPP_EXPORTED_FROM_ABI path { + template + using _EnableIfPathable = + typename enable_if<__is_pathable<_SourceOrIter>::value, _Tp>::type; + + template + using _SourceChar = typename __is_pathable<_Tp>::__char_type; + + template + using _SourceCVT = _PathCVT<_SourceChar<_Tp> >; + +public: +#if defined(_LIBCPP_WIN32API) + typedef wchar_t value_type; + static constexpr value_type preferred_separator = L'\\'; +#else + typedef char value_type; + static constexpr value_type preferred_separator = '/'; +#endif + typedef basic_string string_type; + typedef basic_string_view __string_view; + + enum _LIBCPP_ENUM_VIS format : unsigned char { + auto_format, + native_format, + generic_format + }; + + // constructors and destructor + _LIBCPP_HIDE_FROM_ABI path() noexcept {} + _LIBCPP_HIDE_FROM_ABI path(const path& __p) : __pn_(__p.__pn_) {} + _LIBCPP_HIDE_FROM_ABI path(path&& __p) noexcept + : __pn_(_VSTD::move(__p.__pn_)) {} + + _LIBCPP_HIDE_FROM_ABI + path(string_type&& __s, format = format::auto_format) noexcept + : __pn_(_VSTD::move(__s)) {} + + template > + _LIBCPP_HIDE_FROM_ABI + path(const _Source& __src, format = format::auto_format) { + _SourceCVT<_Source>::__append_source(__pn_, __src); + } + + template + _LIBCPP_HIDE_FROM_ABI + path(_InputIt __first, _InputIt __last, format = format::auto_format) { + typedef typename iterator_traits<_InputIt>::value_type _ItVal; + _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); + } + +/* +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) + // TODO Implement locale conversions. + template > + path(const _Source& __src, const locale& __loc, format = format::auto_format); + template + path(_InputIt __first, _InputIt _last, const locale& __loc, + format = format::auto_format); +#endif +*/ + + _LIBCPP_HIDE_FROM_ABI + ~path() = default; + + // assignments + _LIBCPP_HIDE_FROM_ABI + path& operator=(const path& __p) { + __pn_ = __p.__pn_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator=(path&& __p) noexcept { + __pn_ = _VSTD::move(__p.__pn_); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator=(string_type&& __s) noexcept { + __pn_ = _VSTD::move(__s); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& assign(string_type&& __s) noexcept { + __pn_ = _VSTD::move(__s); + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> + operator=(const _Source& __src) { + return this->assign(__src); + } + + template + _LIBCPP_HIDE_FROM_ABI + _EnableIfPathable<_Source> assign(const _Source& __src) { + __pn_.clear(); + _SourceCVT<_Source>::__append_source(__pn_, __src); + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI + path& assign(_InputIt __first, _InputIt __last) { + typedef typename iterator_traits<_InputIt>::value_type _ItVal; + __pn_.clear(); + _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); + return *this; + } + +public: + // appends +#if defined(_LIBCPP_WIN32API) + _LIBCPP_HIDE_FROM_ABI + path& operator/=(const path& __p) { + auto __p_root_name = __p.__root_name(); + auto __p_root_name_size = __p_root_name.size(); + if (__p.is_absolute() || + (!__p_root_name.empty() && __p_root_name != __string_view(root_name().__pn_))) { + __pn_ = __p.__pn_; + return *this; + } + if (__p.has_root_directory()) { + path __root_name_str = root_name(); + __pn_ = __root_name_str.native(); + __pn_ += __string_view(__p.__pn_).substr(__p_root_name_size); + return *this; + } + if (has_filename() || (!has_root_directory() && is_absolute())) + __pn_ += preferred_separator; + __pn_ += __string_view(__p.__pn_).substr(__p_root_name_size); + return *this; + } + template + _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source> + operator/=(const _Source& __src) { + return operator/=(path(__src)); + } + + template + _LIBCPP_HIDE_FROM_ABI + _EnableIfPathable<_Source> append(const _Source& __src) { + return operator/=(path(__src)); + } + + template + _LIBCPP_HIDE_FROM_ABI + path& append(_InputIt __first, _InputIt __last) { + return operator/=(path(__first, __last)); + } +#else + _LIBCPP_HIDE_FROM_ABI + path& operator/=(const path& __p) { + if (__p.is_absolute()) { + __pn_ = __p.__pn_; + return *this; + } + if (has_filename()) + __pn_ += preferred_separator; + __pn_ += __p.native(); + return *this; + } + + // FIXME: Use _LIBCPP_DIAGNOSE_WARNING to produce a diagnostic when __src + // is known at compile time to be "/' since the user almost certainly intended + // to append a separator instead of overwriting the path with "/" + template + _LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> + operator/=(const _Source& __src) { + return this->append(__src); + } + + template + _LIBCPP_HIDE_FROM_ABI + _EnableIfPathable<_Source> append(const _Source& __src) { + using _Traits = __is_pathable<_Source>; + using _CVT = _PathCVT<_SourceChar<_Source> >; + bool __source_is_absolute = _VSTD_FS::__is_separator(_Traits::__first_or_null(__src)); + if (__source_is_absolute) + __pn_.clear(); + else if (has_filename()) + __pn_ += preferred_separator; + _CVT::__append_source(__pn_, __src); + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI + path& append(_InputIt __first, _InputIt __last) { + typedef typename iterator_traits<_InputIt>::value_type _ItVal; + static_assert(__can_convert_char<_ItVal>::value, "Must convertible"); + using _CVT = _PathCVT<_ItVal>; + if (__first != __last && _VSTD_FS::__is_separator(*__first)) + __pn_.clear(); + else if (has_filename()) + __pn_ += preferred_separator; + _CVT::__append_range(__pn_, __first, __last); + return *this; + } +#endif + + // concatenation + _LIBCPP_HIDE_FROM_ABI + path& operator+=(const path& __x) { + __pn_ += __x.__pn_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator+=(const string_type& __x) { + __pn_ += __x; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator+=(__string_view __x) { + __pn_ += __x; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator+=(const value_type* __x) { + __pn_ += __x; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& operator+=(value_type __x) { + __pn_ += __x; + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI + typename enable_if<__can_convert_char<_ECharT>::value, path&>::type + operator+=(_ECharT __x) { + _PathCVT<_ECharT>::__append_source(__pn_, + basic_string_view<_ECharT>(&__x, 1)); + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI + _EnableIfPathable<_Source> operator+=(const _Source& __x) { + return this->concat(__x); + } + + template + _LIBCPP_HIDE_FROM_ABI + _EnableIfPathable<_Source> concat(const _Source& __x) { + _SourceCVT<_Source>::__append_source(__pn_, __x); + return *this; + } + + template + _LIBCPP_HIDE_FROM_ABI + path& concat(_InputIt __first, _InputIt __last) { + typedef typename iterator_traits<_InputIt>::value_type _ItVal; + _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); + return *this; + } + + // modifiers + _LIBCPP_HIDE_FROM_ABI + void clear() noexcept { __pn_.clear(); } + + _LIBCPP_HIDE_FROM_ABI + path& make_preferred() { +#if defined(_LIBCPP_WIN32API) + _VSTD::replace(__pn_.begin(), __pn_.end(), L'/', L'\\'); +#endif + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& remove_filename() { + auto __fname = __filename(); + if (!__fname.empty()) + __pn_.erase(__fname.data() - __pn_.data()); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + path& replace_filename(const path& __replacement) { + remove_filename(); + return (*this /= __replacement); + } + + path& replace_extension(const path& __replacement = path()); + + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) == 0; + } +# if _LIBCPP_STD_VER <= 17 + friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) != 0; + } + friend _LIBCPP_HIDE_FROM_ABI bool operator<(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) < 0; + } + friend _LIBCPP_HIDE_FROM_ABI bool operator<=(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) <= 0; + } + friend _LIBCPP_HIDE_FROM_ABI bool operator>(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) > 0; + } + friend _LIBCPP_HIDE_FROM_ABI bool operator>=(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) >= 0; + } +# else // _LIBCPP_STD_VER <= 17 + friend _LIBCPP_HIDE_FROM_ABI strong_ordering operator<=>(const path& __lhs, const path& __rhs) noexcept { + return __lhs.__compare(__rhs.__pn_) <=> 0; + } +# endif // _LIBCPP_STD_VER <= 17 + + friend _LIBCPP_HIDE_FROM_ABI path operator/(const path& __lhs, const path& __rhs) { + path __result(__lhs); + __result /= __rhs; + return __result; + } + + _LIBCPP_HIDE_FROM_ABI + void swap(path& __rhs) noexcept { __pn_.swap(__rhs.__pn_); } + + // private helper to allow reserving memory in the path + _LIBCPP_HIDE_FROM_ABI + void __reserve(size_t __s) { __pn_.reserve(__s); } + + // native format observers + _LIBCPP_HIDE_FROM_ABI + const string_type& native() const noexcept { return __pn_; } + + _LIBCPP_HIDE_FROM_ABI + const value_type* c_str() const noexcept { return __pn_.c_str(); } + + _LIBCPP_HIDE_FROM_ABI operator string_type() const { return __pn_; } + +#if defined(_LIBCPP_WIN32API) + _LIBCPP_HIDE_FROM_ABI _VSTD::wstring wstring() const { return __pn_; } + + _LIBCPP_HIDE_FROM_ABI + _VSTD::wstring generic_wstring() const { + _VSTD::wstring __s; + __s.resize(__pn_.size()); + _VSTD::replace_copy(__pn_.begin(), __pn_.end(), __s.begin(), '\\', '/'); + return __s; + } + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) + template , + class _Allocator = allocator<_ECharT> > + _LIBCPP_HIDE_FROM_ABI + basic_string<_ECharT, _Traits, _Allocator> + string(const _Allocator& __a = _Allocator()) const { + using _Str = basic_string<_ECharT, _Traits, _Allocator>; + _Str __s(__a); + __s.reserve(__pn_.size()); + _PathExport<_ECharT>::__append(__s, __pn_); + return __s; + } + + _LIBCPP_HIDE_FROM_ABI _VSTD::string string() const { + return string(); + } + _LIBCPP_HIDE_FROM_ABI __u8_string u8string() const { + using _CVT = __narrow_to_utf8; + __u8_string __s; + __s.reserve(__pn_.size()); + _CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size()); + return __s; + } + + _LIBCPP_HIDE_FROM_ABI _VSTD::u16string u16string() const { + return string(); + } + _LIBCPP_HIDE_FROM_ABI _VSTD::u32string u32string() const { + return string(); + } + + // generic format observers + template , + class _Allocator = allocator<_ECharT> > + _LIBCPP_HIDE_FROM_ABI + basic_string<_ECharT, _Traits, _Allocator> + generic_string(const _Allocator& __a = _Allocator()) const { + using _Str = basic_string<_ECharT, _Traits, _Allocator>; + _Str __s = string<_ECharT, _Traits, _Allocator>(__a); + // Note: This (and generic_u8string below) is slightly suboptimal as + // it iterates twice over the string; once to convert it to the right + // character type, and once to replace path delimiters. + _VSTD::replace(__s.begin(), __s.end(), + static_cast<_ECharT>('\\'), static_cast<_ECharT>('/')); + return __s; + } + + _LIBCPP_HIDE_FROM_ABI _VSTD::string generic_string() const { return generic_string(); } + _LIBCPP_HIDE_FROM_ABI _VSTD::u16string generic_u16string() const { return generic_string(); } + _LIBCPP_HIDE_FROM_ABI _VSTD::u32string generic_u32string() const { return generic_string(); } + _LIBCPP_HIDE_FROM_ABI + __u8_string generic_u8string() const { + __u8_string __s = u8string(); + _VSTD::replace(__s.begin(), __s.end(), '\\', '/'); + return __s; + } +#endif /* !_LIBCPP_HAS_NO_LOCALIZATION */ +#else /* _LIBCPP_WIN32API */ + + _LIBCPP_HIDE_FROM_ABI _VSTD::string string() const { return __pn_; } +#ifndef _LIBCPP_HAS_NO_CHAR8_T + _LIBCPP_HIDE_FROM_ABI _VSTD::u8string u8string() const { return _VSTD::u8string(__pn_.begin(), __pn_.end()); } +#else + _LIBCPP_HIDE_FROM_ABI _VSTD::string u8string() const { return __pn_; } +#endif + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) + template , + class _Allocator = allocator<_ECharT> > + _LIBCPP_HIDE_FROM_ABI + basic_string<_ECharT, _Traits, _Allocator> + string(const _Allocator& __a = _Allocator()) const { + using _CVT = __widen_from_utf8; + using _Str = basic_string<_ECharT, _Traits, _Allocator>; + _Str __s(__a); + __s.reserve(__pn_.size()); + _CVT()(std::back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size()); + return __s; + } + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + _LIBCPP_HIDE_FROM_ABI _VSTD::wstring wstring() const { + return string(); + } +#endif + _LIBCPP_HIDE_FROM_ABI _VSTD::u16string u16string() const { + return string(); + } + _LIBCPP_HIDE_FROM_ABI _VSTD::u32string u32string() const { + return string(); + } +#endif /* !_LIBCPP_HAS_NO_LOCALIZATION */ + + // generic format observers + _LIBCPP_HIDE_FROM_ABI _VSTD::string generic_string() const { return __pn_; } +#ifndef _LIBCPP_HAS_NO_CHAR8_T + _LIBCPP_HIDE_FROM_ABI _VSTD::u8string generic_u8string() const { return _VSTD::u8string(__pn_.begin(), __pn_.end()); } +#else + _LIBCPP_HIDE_FROM_ABI _VSTD::string generic_u8string() const { return __pn_; } +#endif + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) + template , + class _Allocator = allocator<_ECharT> > + _LIBCPP_HIDE_FROM_ABI + basic_string<_ECharT, _Traits, _Allocator> + generic_string(const _Allocator& __a = _Allocator()) const { + return string<_ECharT, _Traits, _Allocator>(__a); + } + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + _LIBCPP_HIDE_FROM_ABI _VSTD::wstring generic_wstring() const { return string(); } +#endif + _LIBCPP_HIDE_FROM_ABI _VSTD::u16string generic_u16string() const { return string(); } + _LIBCPP_HIDE_FROM_ABI _VSTD::u32string generic_u32string() const { return string(); } +#endif /* !_LIBCPP_HAS_NO_LOCALIZATION */ +#endif /* !_LIBCPP_WIN32API */ + +private: + int __compare(__string_view) const; + __string_view __root_name() const; + __string_view __root_directory() const; + __string_view __root_path_raw() const; + __string_view __relative_path() const; + __string_view __parent_path() const; + __string_view __filename() const; + __string_view __stem() const; + __string_view __extension() const; + +public: + // compare + _LIBCPP_HIDE_FROM_ABI int compare(const path& __p) const noexcept { + return __compare(__p.__pn_); + } + _LIBCPP_HIDE_FROM_ABI int compare(const string_type& __s) const { + return __compare(__s); + } + _LIBCPP_HIDE_FROM_ABI int compare(__string_view __s) const { + return __compare(__s); + } + _LIBCPP_HIDE_FROM_ABI int compare(const value_type* __s) const { + return __compare(__s); + } + + // decomposition + _LIBCPP_HIDE_FROM_ABI path root_name() const { + return string_type(__root_name()); + } + _LIBCPP_HIDE_FROM_ABI path root_directory() const { + return string_type(__root_directory()); + } + _LIBCPP_HIDE_FROM_ABI path root_path() const { +#if defined(_LIBCPP_WIN32API) + return string_type(__root_path_raw()); +#else + return root_name().append(string_type(__root_directory())); +#endif + } + _LIBCPP_HIDE_FROM_ABI path relative_path() const { + return string_type(__relative_path()); + } + _LIBCPP_HIDE_FROM_ABI path parent_path() const { + return string_type(__parent_path()); + } + _LIBCPP_HIDE_FROM_ABI path filename() const { + return string_type(__filename()); + } + _LIBCPP_HIDE_FROM_ABI path stem() const { return string_type(__stem()); } + _LIBCPP_HIDE_FROM_ABI path extension() const { + return string_type(__extension()); + } + + // query + _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI bool + empty() const noexcept { + return __pn_.empty(); + } + + _LIBCPP_HIDE_FROM_ABI bool has_root_name() const { + return !__root_name().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_root_directory() const { + return !__root_directory().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_root_path() const { + return !__root_path_raw().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_relative_path() const { + return !__relative_path().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_parent_path() const { + return !__parent_path().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_filename() const { + return !__filename().empty(); + } + _LIBCPP_HIDE_FROM_ABI bool has_stem() const { return !__stem().empty(); } + _LIBCPP_HIDE_FROM_ABI bool has_extension() const { + return !__extension().empty(); + } + + _LIBCPP_HIDE_FROM_ABI bool is_absolute() const { +#if defined(_LIBCPP_WIN32API) + __string_view __root_name_str = __root_name(); + __string_view __root_dir = __root_directory(); + if (__root_name_str.size() == 2 && __root_name_str[1] == ':') { + // A drive letter with no root directory is relative, e.g. x:example. + return !__root_dir.empty(); + } + // If no root name, it's relative, e.g. \example is relative to the current drive + if (__root_name_str.empty()) + return false; + if (__root_name_str.size() < 3) + return false; + // A server root name, like \\server, is always absolute + if (__root_name_str[0] != '/' && __root_name_str[0] != '\\') + return false; + if (__root_name_str[1] != '/' && __root_name_str[1] != '\\') + return false; + // Seems to be a server root name + return true; +#else + return has_root_directory(); +#endif + } + _LIBCPP_HIDE_FROM_ABI bool is_relative() const { return !is_absolute(); } + + // relative paths + path lexically_normal() const; + path lexically_relative(const path& __base) const; + + _LIBCPP_HIDE_FROM_ABI path lexically_proximate(const path& __base) const { + path __result = this->lexically_relative(__base); + if (__result.native().empty()) + return *this; + return __result; + } + + // iterators + class _LIBCPP_EXPORTED_FROM_ABI iterator; + typedef iterator const_iterator; + + iterator begin() const; + iterator end() const; + +#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) + template + _LIBCPP_HIDE_FROM_ABI friend + typename enable_if::value && + is_same<_Traits, char_traits >::value, + basic_ostream<_CharT, _Traits>&>::type + operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { + __os << _VSTD::__quoted(__p.native()); + return __os; + } + + template + _LIBCPP_HIDE_FROM_ABI friend + typename enable_if::value || + !is_same<_Traits, char_traits >::value, + basic_ostream<_CharT, _Traits>&>::type + operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { + __os << _VSTD::__quoted(__p.string<_CharT, _Traits>()); + return __os; + } + + template + _LIBCPP_HIDE_FROM_ABI friend basic_istream<_CharT, _Traits>& + operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) { + basic_string<_CharT, _Traits> __tmp; + __is >> _VSTD::__quoted(__tmp); + __p = __tmp; + return __is; + } +#endif // !_LIBCPP_HAS_NO_LOCALIZATION + +private: + inline _LIBCPP_HIDE_FROM_ABI path& + __assign_view(__string_view const& __s) noexcept { + __pn_ = string_type(__s); + return *this; + } + string_type __pn_; +}; + +inline _LIBCPP_HIDE_FROM_ABI void swap(path& __lhs, path& __rhs) noexcept { + __lhs.swap(__rhs); +} + +_LIBCPP_EXPORTED_FROM_ABI size_t hash_value(const path& __p) noexcept; + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <> +struct _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY hash<_VSTD_FS::path> : __unary_function<_VSTD_FS::path, size_t> { + _LIBCPP_HIDE_FROM_ABI size_t operator()(_VSTD_FS::path const& __p) const noexcept { + return _VSTD_FS::hash_value(__p); + } +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_PATH_H diff --git a/lib/libcxx/include/__filesystem/path_iterator.h b/lib/libcxx/include/__filesystem/path_iterator.h new file mode 100644 index 0000000..9961b46 --- /dev/null +++ b/lib/libcxx/include/__filesystem/path_iterator.h @@ -0,0 +1,132 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_PATH_ITERATOR_H +#define _LIBCPP___FILESYSTEM_PATH_ITERATOR_H + +#include <__assert> +#include <__availability> +#include <__config> +#include <__filesystem/path.h> +#include <__iterator/iterator_traits.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +class _LIBCPP_EXPORTED_FROM_ABI path::iterator { +public: + enum _ParserState : unsigned char { + _Singular, + _BeforeBegin, + _InRootName, + _InRootDir, + _InFilenames, + _InTrailingSep, + _AtEnd + }; + +public: + typedef input_iterator_tag iterator_category; + typedef bidirectional_iterator_tag iterator_concept; + + typedef path value_type; + typedef ptrdiff_t difference_type; + typedef const path* pointer; + typedef path reference; + +public: + _LIBCPP_INLINE_VISIBILITY + iterator() + : __stashed_elem_(), __path_ptr_(nullptr), __entry_(), + __state_(_Singular) {} + + _LIBCPP_HIDE_FROM_ABI iterator(const iterator&) = default; + _LIBCPP_HIDE_FROM_ABI ~iterator() = default; + + _LIBCPP_HIDE_FROM_ABI iterator& operator=(const iterator&) = default; + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { return __stashed_elem_; } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { return &__stashed_elem_; } + + _LIBCPP_INLINE_VISIBILITY + iterator& operator++() { + _LIBCPP_ASSERT_UNCATEGORIZED(__state_ != _Singular, + "attempting to increment a singular iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(__state_ != _AtEnd, + "attempting to increment the end iterator"); + return __increment(); + } + + _LIBCPP_INLINE_VISIBILITY + iterator operator++(int) { + iterator __it(*this); + this->operator++(); + return __it; + } + + _LIBCPP_INLINE_VISIBILITY + iterator& operator--() { + _LIBCPP_ASSERT_UNCATEGORIZED(__state_ != _Singular, + "attempting to decrement a singular iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(__entry_.data() != __path_ptr_->native().data(), + "attempting to decrement the begin iterator"); + return __decrement(); + } + + _LIBCPP_INLINE_VISIBILITY + iterator operator--(int) { + iterator __it(*this); + this->operator--(); + return __it; + } + +private: + friend class path; + + inline _LIBCPP_INLINE_VISIBILITY friend bool operator==(const iterator&, + const iterator&); + + iterator& __increment(); + iterator& __decrement(); + + path __stashed_elem_; + const path* __path_ptr_; + path::__string_view __entry_; + _ParserState __state_; +}; + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline _LIBCPP_INLINE_VISIBILITY bool operator==(const path::iterator& __lhs, + const path::iterator& __rhs) { + return __lhs.__path_ptr_ == __rhs.__path_ptr_ && + __lhs.__entry_.data() == __rhs.__entry_.data(); +} + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline _LIBCPP_INLINE_VISIBILITY bool operator!=(const path::iterator& __lhs, + const path::iterator& __rhs) { + return !(__lhs == __rhs); +} + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_PATH_ITERATOR_H diff --git a/lib/libcxx/include/__filesystem/perm_options.h b/lib/libcxx/include/__filesystem/perm_options.h new file mode 100644 index 0000000..e77af9e --- /dev/null +++ b/lib/libcxx/include/__filesystem/perm_options.h @@ -0,0 +1,73 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_PERM_OPTIONS_H +#define _LIBCPP___FILESYSTEM_PERM_OPTIONS_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +enum class _LIBCPP_ENUM_VIS perm_options : unsigned char { + replace = 1, + add = 2, + remove = 4, + nofollow = 8 +}; + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perm_options operator&(perm_options __lhs, perm_options __rhs) { + return static_cast(static_cast(__lhs) & + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perm_options operator|(perm_options __lhs, perm_options __rhs) { + return static_cast(static_cast(__lhs) | + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perm_options operator^(perm_options __lhs, perm_options __rhs) { + return static_cast(static_cast(__lhs) ^ + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perm_options operator~(perm_options __lhs) { + return static_cast(~static_cast(__lhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline perm_options& operator&=(perm_options& __lhs, perm_options __rhs) { + return __lhs = __lhs & __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline perm_options& operator|=(perm_options& __lhs, perm_options __rhs) { + return __lhs = __lhs | __rhs; +} + +_LIBCPP_INLINE_VISIBILITY +inline perm_options& operator^=(perm_options& __lhs, perm_options __rhs) { + return __lhs = __lhs ^ __rhs; +} + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_PERM_OPTIONS_H diff --git a/lib/libcxx/include/__filesystem/perms.h b/lib/libcxx/include/__filesystem/perms.h new file mode 100644 index 0000000..77bc652 --- /dev/null +++ b/lib/libcxx/include/__filesystem/perms.h @@ -0,0 +1,91 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_PERMS_H +#define _LIBCPP___FILESYSTEM_PERMS_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +// On Windows, these permission bits map to one single readonly flag per +// file, and the executable bit is always returned as set. When setting +// permissions, as long as the write bit is set for either owner, group or +// others, the readonly flag is cleared. +enum class _LIBCPP_ENUM_VIS perms : unsigned { + none = 0, + + owner_read = 0400, + owner_write = 0200, + owner_exec = 0100, + owner_all = 0700, + + group_read = 040, + group_write = 020, + group_exec = 010, + group_all = 070, + + others_read = 04, + others_write = 02, + others_exec = 01, + others_all = 07, + + all = 0777, + + set_uid = 04000, + set_gid = 02000, + sticky_bit = 01000, + mask = 07777, + unknown = 0xFFFF, +}; + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perms operator&(perms __lhs, perms __rhs) { + return static_cast(static_cast(__lhs) & + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perms operator|(perms __lhs, perms __rhs) { + return static_cast(static_cast(__lhs) | + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perms operator^(perms __lhs, perms __rhs) { + return static_cast(static_cast(__lhs) ^ + static_cast(__rhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline constexpr perms operator~(perms __lhs) { + return static_cast(~static_cast(__lhs)); +} + +_LIBCPP_INLINE_VISIBILITY +inline perms& operator&=(perms& __lhs, perms __rhs) { return __lhs = __lhs & __rhs; } + +_LIBCPP_INLINE_VISIBILITY +inline perms& operator|=(perms& __lhs, perms __rhs) { return __lhs = __lhs | __rhs; } + +_LIBCPP_INLINE_VISIBILITY +inline perms& operator^=(perms& __lhs, perms __rhs) { return __lhs = __lhs ^ __rhs; } + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_PERMS_H diff --git a/lib/libcxx/include/__filesystem/recursive_directory_iterator.h b/lib/libcxx/include/__filesystem/recursive_directory_iterator.h new file mode 100644 index 0000000..c38d58e --- /dev/null +++ b/lib/libcxx/include/__filesystem/recursive_directory_iterator.h @@ -0,0 +1,183 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_RECURSIVE_DIRECTORY_ITERATOR_H +#define _LIBCPP___FILESYSTEM_RECURSIVE_DIRECTORY_ITERATOR_H + +#include <__availability> +#include <__config> +#include <__filesystem/directory_entry.h> +#include <__filesystem/directory_options.h> +#include <__filesystem/path.h> +#include <__iterator/default_sentinel.h> +#include <__iterator/iterator_traits.h> +#include <__memory/shared_ptr.h> +#include <__ranges/enable_borrowed_range.h> +#include <__ranges/enable_view.h> +#include <__system_error/error_code.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +class recursive_directory_iterator { +public: + using value_type = directory_entry; + using difference_type = ptrdiff_t; + using pointer = directory_entry const*; + using reference = directory_entry const&; + using iterator_category = input_iterator_tag; + +public: + // constructors and destructor + _LIBCPP_INLINE_VISIBILITY + recursive_directory_iterator() noexcept : __rec_(false) {} + + _LIBCPP_INLINE_VISIBILITY + explicit recursive_directory_iterator( + const path& __p, directory_options __xoptions = directory_options::none) + : recursive_directory_iterator(__p, __xoptions, nullptr) {} + + _LIBCPP_INLINE_VISIBILITY + recursive_directory_iterator(const path& __p, directory_options __xoptions, + error_code& __ec) + : recursive_directory_iterator(__p, __xoptions, &__ec) {} + + _LIBCPP_INLINE_VISIBILITY + recursive_directory_iterator(const path& __p, error_code& __ec) + : recursive_directory_iterator(__p, directory_options::none, &__ec) {} + + _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator(const recursive_directory_iterator&) = default; + _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator(recursive_directory_iterator&&) = default; + + _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator& + operator=(const recursive_directory_iterator&) = default; + + _LIBCPP_INLINE_VISIBILITY + recursive_directory_iterator& + operator=(recursive_directory_iterator&& __o) noexcept { + // non-default implementation provided to support self-move assign. + if (this != &__o) { + __imp_ = _VSTD::move(__o.__imp_); + __rec_ = __o.__rec_; + } + return *this; + } + + _LIBCPP_HIDE_FROM_ABI ~recursive_directory_iterator() = default; + + _LIBCPP_INLINE_VISIBILITY + const directory_entry& operator*() const { return __dereference(); } + + _LIBCPP_INLINE_VISIBILITY + const directory_entry* operator->() const { return &__dereference(); } + + _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator& operator++() { return __increment(); } + + _LIBCPP_INLINE_VISIBILITY + __dir_element_proxy operator++(int) { + __dir_element_proxy __p(**this); + __increment(); + return __p; + } + + _LIBCPP_INLINE_VISIBILITY + recursive_directory_iterator& increment(error_code& __ec) { + return __increment(&__ec); + } + + _LIBCPP_EXPORTED_FROM_ABI directory_options options() const; + _LIBCPP_EXPORTED_FROM_ABI int depth() const; + + _LIBCPP_INLINE_VISIBILITY + void pop() { __pop(); } + + _LIBCPP_INLINE_VISIBILITY + void pop(error_code& __ec) { __pop(&__ec); } + + _LIBCPP_INLINE_VISIBILITY + bool recursion_pending() const { return __rec_; } + + _LIBCPP_INLINE_VISIBILITY + void disable_recursion_pending() { __rec_ = false; } + +# if _LIBCPP_STD_VER >= 20 + + _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const noexcept { + return *this == recursive_directory_iterator(); + } + +# endif + +private: + _LIBCPP_EXPORTED_FROM_ABI recursive_directory_iterator(const path& __p, directory_options __opt, error_code* __ec); + _LIBCPP_EXPORTED_FROM_ABI const directory_entry& __dereference() const; + _LIBCPP_EXPORTED_FROM_ABI bool __try_recursion(error_code* __ec); + _LIBCPP_EXPORTED_FROM_ABI void __advance(error_code* __ec = nullptr); + _LIBCPP_EXPORTED_FROM_ABI recursive_directory_iterator& __increment(error_code* __ec = nullptr); + _LIBCPP_EXPORTED_FROM_ABI void __pop(error_code* __ec = nullptr); + + inline _LIBCPP_INLINE_VISIBILITY friend bool + operator==(const recursive_directory_iterator&, + const recursive_directory_iterator&) noexcept; + + struct _LIBCPP_HIDDEN __shared_imp; + shared_ptr<__shared_imp> __imp_; + bool __rec_; +}; // class recursive_directory_iterator + +inline _LIBCPP_INLINE_VISIBILITY bool +operator==(const recursive_directory_iterator& __lhs, + const recursive_directory_iterator& __rhs) noexcept { + return __lhs.__imp_ == __rhs.__imp_; +} + +_LIBCPP_INLINE_VISIBILITY +inline bool operator!=(const recursive_directory_iterator& __lhs, + const recursive_directory_iterator& __rhs) noexcept { + return !(__lhs == __rhs); +} +// enable recursive_directory_iterator range-based for statements +inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator +begin(recursive_directory_iterator __iter) noexcept { + return __iter; +} + +inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator +end(recursive_directory_iterator) noexcept { + return recursive_directory_iterator(); +} + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#if _LIBCPP_STD_VER >= 20 + +template <> +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline constexpr bool _VSTD::ranges::enable_borrowed_range<_VSTD_FS::recursive_directory_iterator> = true; + +template <> +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY +inline constexpr bool _VSTD::ranges::enable_view<_VSTD_FS::recursive_directory_iterator> = true; + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) + +#endif // _LIBCPP___FILESYSTEM_RECURSIVE_DIRECTORY_ITERATOR_H diff --git a/lib/libcxx/include/__filesystem/space_info.h b/lib/libcxx/include/__filesystem/space_info.h new file mode 100644 index 0000000..929f514 --- /dev/null +++ b/lib/libcxx/include/__filesystem/space_info.h @@ -0,0 +1,39 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_SPACE_INFO_H +#define _LIBCPP___FILESYSTEM_SPACE_INFO_H + +#include <__availability> +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +struct _LIBCPP_EXPORTED_FROM_ABI space_info { + uintmax_t capacity; + uintmax_t free; + uintmax_t available; + +# if _LIBCPP_STD_VER >= 20 + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const space_info&, const space_info&) = default; +# endif +}; + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_SPACE_INFO_H diff --git a/lib/libcxx/include/__filesystem/u8path.h b/lib/libcxx/include/__filesystem/u8path.h new file mode 100644 index 0000000..90b879a --- /dev/null +++ b/lib/libcxx/include/__filesystem/u8path.h @@ -0,0 +1,107 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FILESYSTEM_U8PATH_H +#define _LIBCPP___FILESYSTEM_U8PATH_H + +#include <__algorithm/unwrap_iter.h> +#include <__availability> +#include <__config> +#include <__filesystem/path.h> +#include + +// Only required on Windows for __widen_from_utf8, and included conservatively +// because it requires support for localization. +#if defined(_LIBCPP_WIN32API) +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T + typename enable_if<__is_pathable<_InputIt>::value, path>::type + u8path(_InputIt __f, _InputIt __l) { + static_assert( +#ifndef _LIBCPP_HAS_NO_CHAR8_T + is_same::__char_type, char8_t>::value || +#endif + is_same::__char_type, char>::value, + "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" + " or 'char8_t'"); +#if defined(_LIBCPP_WIN32API) + string __tmp(__f, __l); + using _CVT = __widen_from_utf8; + _VSTD::wstring __w; + __w.reserve(__tmp.size()); + _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); + return path(__w); +#else + return path(__f, __l); +#endif /* !_LIBCPP_WIN32API */ +} + +#if defined(_LIBCPP_WIN32API) +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T + typename enable_if<__is_pathable<_InputIt>::value, path>::type + u8path(_InputIt __f, _NullSentinel) { + static_assert( +#ifndef _LIBCPP_HAS_NO_CHAR8_T + is_same::__char_type, char8_t>::value || +#endif + is_same::__char_type, char>::value, + "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" + " or 'char8_t'"); + string __tmp; + const char __sentinel = char{}; + for (; *__f != __sentinel; ++__f) + __tmp.push_back(*__f); + using _CVT = __widen_from_utf8; + _VSTD::wstring __w; + __w.reserve(__tmp.size()); + _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); + return path(__w); +} +#endif /* _LIBCPP_WIN32API */ + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T + typename enable_if<__is_pathable<_Source>::value, path>::type + u8path(const _Source& __s) { + static_assert( +#ifndef _LIBCPP_HAS_NO_CHAR8_T + is_same::__char_type, char8_t>::value || +#endif + is_same::__char_type, char>::value, + "u8path(Source const&) requires Source have a character type of type " + "'char' or 'char8_t'"); +#if defined(_LIBCPP_WIN32API) + using _Traits = __is_pathable<_Source>; + return u8path(_VSTD::__unwrap_iter(_Traits::__range_begin(__s)), _VSTD::__unwrap_iter(_Traits::__range_end(__s))); +#else + return path(__s); +#endif +} + +_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP + +_LIBCPP_END_NAMESPACE_FILESYSTEM + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FILESYSTEM_U8PATH_H diff --git a/lib/libcxx/include/__format/buffer.h b/lib/libcxx/include/__format/buffer.h new file mode 100644 index 0000000..45f9da8 --- /dev/null +++ b/lib/libcxx/include/__format/buffer.h @@ -0,0 +1,651 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_BUFFER_H +#define _LIBCPP___FORMAT_BUFFER_H + +#include <__algorithm/copy_n.h> +#include <__algorithm/fill_n.h> +#include <__algorithm/max.h> +#include <__algorithm/min.h> +#include <__algorithm/ranges_copy_n.h> +#include <__algorithm/transform.h> +#include <__algorithm/unwrap_iter.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/enable_insertable.h> +#include <__format/format_to_n_result.h> +#include <__iterator/back_insert_iterator.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/wrap_iter.h> +#include <__memory/addressof.h> +#include <__memory/allocate_at_least.h> +#include <__memory/allocator_traits.h> +#include <__memory/construct_at.h> +#include <__memory/ranges_construct_at.h> +#include <__memory/uninitialized_algorithms.h> +#include <__type_traits/add_pointer.h> +#include <__type_traits/conditional.h> +#include <__utility/exception_guard.h> +#include <__utility/move.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format { + +/// A "buffer" that handles writing to the proper iterator. +/// +/// This helper is used together with the @ref back_insert_iterator to offer +/// type-erasure for the formatting functions. This reduces the number to +/// template instantiations. +template <__fmt_char_type _CharT> +class _LIBCPP_TEMPLATE_VIS __output_buffer { +public: + using value_type = _CharT; + + template + _LIBCPP_HIDE_FROM_ABI explicit __output_buffer(_CharT* __ptr, size_t __capacity, _Tp* __obj) + : __ptr_(__ptr), + __capacity_(__capacity), + __flush_([](_CharT* __p, size_t __n, void* __o) { static_cast<_Tp*>(__o)->__flush(__p, __n); }), + __obj_(__obj) {} + + _LIBCPP_HIDE_FROM_ABI void __reset(_CharT* __ptr, size_t __capacity) { + __ptr_ = __ptr; + __capacity_ = __capacity; + } + + _LIBCPP_HIDE_FROM_ABI auto __make_output_iterator() { return std::back_insert_iterator{*this}; } + + // Used in std::back_insert_iterator. + _LIBCPP_HIDE_FROM_ABI void push_back(_CharT __c) { + __ptr_[__size_++] = __c; + + // Profiling showed flushing after adding is more efficient than flushing + // when entering the function. + if (__size_ == __capacity_) + __flush(); + } + + /// Copies the input __str to the buffer. + /// + /// Since some of the input is generated by std::to_chars, there needs to be a + /// conversion when _CharT is wchar_t. + template <__fmt_char_type _InCharT> + _LIBCPP_HIDE_FROM_ABI void __copy(basic_string_view<_InCharT> __str) { + // When the underlying iterator is a simple iterator the __capacity_ is + // infinite. For a string or container back_inserter it isn't. This means + // adding a large string the the buffer can cause some overhead. In that + // case a better approach could be: + // - flush the buffer + // - container.append(__str.begin(), __str.end()); + // The same holds true for the fill. + // For transform it might be slightly harder, however the use case for + // transform is slightly less common; it converts hexadecimal values to + // upper case. For integral these strings are short. + // TODO FMT Look at the improvements above. + size_t __n = __str.size(); + + __flush_on_overflow(__n); + if (__n < __capacity_) { // push_back requires the buffer to have room for at least one character (so use <). + _VSTD::copy_n(__str.data(), __n, _VSTD::addressof(__ptr_[__size_])); + __size_ += __n; + return; + } + + // The output doesn't fit in the internal buffer. + // Copy the data in "__capacity_" sized chunks. + _LIBCPP_ASSERT_UNCATEGORIZED(__size_ == 0, "the buffer should be flushed by __flush_on_overflow"); + const _InCharT* __first = __str.data(); + do { + size_t __chunk = _VSTD::min(__n, __capacity_); + _VSTD::copy_n(__first, __chunk, _VSTD::addressof(__ptr_[__size_])); + __size_ = __chunk; + __first += __chunk; + __n -= __chunk; + __flush(); + } while (__n); + } + + /// A std::transform wrapper. + /// + /// Like @ref __copy it may need to do type conversion. + template <__fmt_char_type _InCharT, class _UnaryOperation> + _LIBCPP_HIDE_FROM_ABI void __transform(const _InCharT* __first, const _InCharT* __last, _UnaryOperation __operation) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "not a valid range"); + + size_t __n = static_cast(__last - __first); + __flush_on_overflow(__n); + if (__n < __capacity_) { // push_back requires the buffer to have room for at least one character (so use <). + _VSTD::transform(__first, __last, _VSTD::addressof(__ptr_[__size_]), _VSTD::move(__operation)); + __size_ += __n; + return; + } + + // The output doesn't fit in the internal buffer. + // Transform the data in "__capacity_" sized chunks. + _LIBCPP_ASSERT_UNCATEGORIZED(__size_ == 0, "the buffer should be flushed by __flush_on_overflow"); + do { + size_t __chunk = _VSTD::min(__n, __capacity_); + _VSTD::transform(__first, __first + __chunk, _VSTD::addressof(__ptr_[__size_]), __operation); + __size_ = __chunk; + __first += __chunk; + __n -= __chunk; + __flush(); + } while (__n); + } + + /// A \c fill_n wrapper. + _LIBCPP_HIDE_FROM_ABI void __fill(size_t __n, _CharT __value) { + __flush_on_overflow(__n); + if (__n < __capacity_) { // push_back requires the buffer to have room for at least one character (so use <). + _VSTD::fill_n(_VSTD::addressof(__ptr_[__size_]), __n, __value); + __size_ += __n; + return; + } + + // The output doesn't fit in the internal buffer. + // Fill the buffer in "__capacity_" sized chunks. + _LIBCPP_ASSERT_UNCATEGORIZED(__size_ == 0, "the buffer should be flushed by __flush_on_overflow"); + do { + size_t __chunk = _VSTD::min(__n, __capacity_); + _VSTD::fill_n(_VSTD::addressof(__ptr_[__size_]), __chunk, __value); + __size_ = __chunk; + __n -= __chunk; + __flush(); + } while (__n); + } + + _LIBCPP_HIDE_FROM_ABI void __flush() { + __flush_(__ptr_, __size_, __obj_); + __size_ = 0; + } + +private: + _CharT* __ptr_; + size_t __capacity_; + size_t __size_{0}; + void (*__flush_)(_CharT*, size_t, void*); + void* __obj_; + + /// Flushes the buffer when the output operation would overflow the buffer. + /// + /// A simple approach for the overflow detection would be something along the + /// lines: + /// \code + /// // The internal buffer is large enough. + /// if (__n <= __capacity_) { + /// // Flush when we really would overflow. + /// if (__size_ + __n >= __capacity_) + /// __flush(); + /// ... + /// } + /// \endcode + /// + /// This approach works for all cases but one: + /// A __format_to_n_buffer_base where \ref __enable_direct_output is true. + /// In that case the \ref __capacity_ of the buffer changes during the first + /// \ref __flush. During that operation the output buffer switches from its + /// __writer_ to its __storage_. The \ref __capacity_ of the former depends + /// on the value of n, of the latter is a fixed size. For example: + /// - a format_to_n call with a 10'000 char buffer, + /// - the buffer is filled with 9'500 chars, + /// - adding 1'000 elements would overflow the buffer so the buffer gets + /// changed and the \ref __capacity_ decreases from 10'000 to + /// __buffer_size (256 at the time of writing). + /// + /// This means that the \ref __flush for this class may need to copy a part of + /// the internal buffer to the proper output. In this example there will be + /// 500 characters that need this copy operation. + /// + /// Note it would be more efficient to write 500 chars directly and then swap + /// the buffers. This would make the code more complex and \ref format_to_n is + /// not the most common use case. Therefore the optimization isn't done. + _LIBCPP_HIDE_FROM_ABI void __flush_on_overflow(size_t __n) { + if (__size_ + __n >= __capacity_) + __flush(); + } +}; + +/// A storage using an internal buffer. +/// +/// This storage is used when writing a single element to the output iterator +/// is expensive. +template <__fmt_char_type _CharT> +class _LIBCPP_TEMPLATE_VIS __internal_storage { +public: + _LIBCPP_HIDE_FROM_ABI _CharT* __begin() { return __buffer_; } + + static constexpr size_t __buffer_size = 256 / sizeof(_CharT); + +private: + _CharT __buffer_[__buffer_size]; +}; + +/// A storage writing directly to the storage. +/// +/// This requires the storage to be a contiguous buffer of \a _CharT. +/// Since the output is directly written to the underlying storage this class +/// is just an empty class. +template <__fmt_char_type _CharT> +class _LIBCPP_TEMPLATE_VIS __direct_storage {}; + +template +concept __enable_direct_output = __fmt_char_type<_CharT> && + (same_as<_OutIt, _CharT*> + // TODO(hardening): the following check might not apply to hardened iterators and might need to be wrapped in an + // `#ifdef`. + || same_as<_OutIt, __wrap_iter<_CharT*>> + ); + +/// Write policy for directly writing to the underlying output. +template +class _LIBCPP_TEMPLATE_VIS __writer_direct { +public: + _LIBCPP_HIDE_FROM_ABI explicit __writer_direct(_OutIt __out_it) + : __out_it_(__out_it) {} + + _LIBCPP_HIDE_FROM_ABI _OutIt __out_it() { return __out_it_; } + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT*, size_t __n) { + // _OutIt can be a __wrap_iter. Therefore the original iterator + // is adjusted. + __out_it_ += __n; + } + +private: + _OutIt __out_it_; +}; + +/// Write policy for copying the buffer to the output. +template +class _LIBCPP_TEMPLATE_VIS __writer_iterator { +public: + _LIBCPP_HIDE_FROM_ABI explicit __writer_iterator(_OutIt __out_it) + : __out_it_{_VSTD::move(__out_it)} {} + + _LIBCPP_HIDE_FROM_ABI _OutIt __out_it() && { return std::move(__out_it_); } + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT* __ptr, size_t __n) { + __out_it_ = std::ranges::copy_n(__ptr, __n, std::move(__out_it_)).out; + } + +private: + _OutIt __out_it_; +}; + +/// Concept to see whether a \a _Container is insertable. +/// +/// The concept is used to validate whether multiple calls to a +/// \ref back_insert_iterator can be replace by a call to \c _Container::insert. +/// +/// \note a \a _Container needs to opt-in to the concept by specializing +/// \ref __enable_insertable. +template +concept __insertable = + __enable_insertable<_Container> && __fmt_char_type && + requires(_Container& __t, add_pointer_t __first, + add_pointer_t __last) { __t.insert(__t.end(), __first, __last); }; + +/// Extract the container type of a \ref back_insert_iterator. +template +struct _LIBCPP_TEMPLATE_VIS __back_insert_iterator_container { + using type = void; +}; + +template <__insertable _Container> +struct _LIBCPP_TEMPLATE_VIS __back_insert_iterator_container> { + using type = _Container; +}; + +/// Write policy for inserting the buffer in a container. +template +class _LIBCPP_TEMPLATE_VIS __writer_container { +public: + using _CharT = typename _Container::value_type; + + _LIBCPP_HIDE_FROM_ABI explicit __writer_container(back_insert_iterator<_Container> __out_it) + : __container_{__out_it.__get_container()} {} + + _LIBCPP_HIDE_FROM_ABI auto __out_it() { return std::back_inserter(*__container_); } + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT* __ptr, size_t __n) { + __container_->insert(__container_->end(), __ptr, __ptr + __n); + } + +private: + _Container* __container_; +}; + +/// Selects the type of the writer used for the output iterator. +template +class _LIBCPP_TEMPLATE_VIS __writer_selector { + using _Container = typename __back_insert_iterator_container<_OutIt>::type; + +public: + using type = conditional_t, __writer_container<_Container>, + conditional_t<__enable_direct_output<_OutIt, _CharT>, __writer_direct<_OutIt, _CharT>, + __writer_iterator<_OutIt, _CharT>>>; +}; + +/// The generic formatting buffer. +template +requires(output_iterator<_OutIt, const _CharT&>) class _LIBCPP_TEMPLATE_VIS + __format_buffer { + using _Storage = + conditional_t<__enable_direct_output<_OutIt, _CharT>, + __direct_storage<_CharT>, __internal_storage<_CharT>>; + +public: + _LIBCPP_HIDE_FROM_ABI explicit __format_buffer(_OutIt __out_it) + requires(same_as<_Storage, __internal_storage<_CharT>>) + : __output_(__storage_.__begin(), __storage_.__buffer_size, this), __writer_(_VSTD::move(__out_it)) {} + + _LIBCPP_HIDE_FROM_ABI explicit __format_buffer(_OutIt __out_it) requires( + same_as<_Storage, __direct_storage<_CharT>>) + : __output_(_VSTD::__unwrap_iter(__out_it), size_t(-1), this), + __writer_(_VSTD::move(__out_it)) {} + + _LIBCPP_HIDE_FROM_ABI auto __make_output_iterator() { return __output_.__make_output_iterator(); } + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT* __ptr, size_t __n) { __writer_.__flush(__ptr, __n); } + + _LIBCPP_HIDE_FROM_ABI _OutIt __out_it() && { + __output_.__flush(); + return _VSTD::move(__writer_).__out_it(); + } + +private: + _LIBCPP_NO_UNIQUE_ADDRESS _Storage __storage_; + __output_buffer<_CharT> __output_; + typename __writer_selector<_OutIt, _CharT>::type __writer_; +}; + +/// A buffer that counts the number of insertions. +/// +/// Since \ref formatted_size only needs to know the size, the output itself is +/// discarded. +template <__fmt_char_type _CharT> +class _LIBCPP_TEMPLATE_VIS __formatted_size_buffer { +public: + _LIBCPP_HIDE_FROM_ABI auto __make_output_iterator() { return __output_.__make_output_iterator(); } + + _LIBCPP_HIDE_FROM_ABI void __flush(const _CharT*, size_t __n) { __size_ += __n; } + + _LIBCPP_HIDE_FROM_ABI size_t __result() && { + __output_.__flush(); + return __size_; + } + +private: + __internal_storage<_CharT> __storage_; + __output_buffer<_CharT> __output_{__storage_.__begin(), __storage_.__buffer_size, this}; + size_t __size_{0}; +}; + +/// The base of a buffer that counts and limits the number of insertions. +template + requires(output_iterator<_OutIt, const _CharT&>) +struct _LIBCPP_TEMPLATE_VIS __format_to_n_buffer_base { + using _Size = iter_difference_t<_OutIt>; + +public: + _LIBCPP_HIDE_FROM_ABI explicit __format_to_n_buffer_base(_OutIt __out_it, _Size __max_size) + : __writer_(_VSTD::move(__out_it)), __max_size_(_VSTD::max(_Size(0), __max_size)) {} + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT* __ptr, size_t __n) { + if (_Size(__size_) <= __max_size_) + __writer_.__flush(__ptr, _VSTD::min(_Size(__n), __max_size_ - __size_)); + __size_ += __n; + } + +protected: + __internal_storage<_CharT> __storage_; + __output_buffer<_CharT> __output_{__storage_.__begin(), __storage_.__buffer_size, this}; + typename __writer_selector<_OutIt, _CharT>::type __writer_; + + _Size __max_size_; + _Size __size_{0}; +}; + +/// The base of a buffer that counts and limits the number of insertions. +/// +/// This version is used when \c __enable_direct_output<_OutIt, _CharT> == true. +/// +/// This class limits the size available to the direct writer so it will not +/// exceed the maximum number of code units. +template + requires(output_iterator<_OutIt, const _CharT&>) +class _LIBCPP_TEMPLATE_VIS __format_to_n_buffer_base<_OutIt, _CharT, true> { + using _Size = iter_difference_t<_OutIt>; + +public: + _LIBCPP_HIDE_FROM_ABI explicit __format_to_n_buffer_base(_OutIt __out_it, _Size __max_size) + : __output_(_VSTD::__unwrap_iter(__out_it), __max_size, this), + __writer_(_VSTD::move(__out_it)), + __max_size_(__max_size) { + if (__max_size <= 0) [[unlikely]] + __output_.__reset(__storage_.__begin(), __storage_.__buffer_size); + } + + _LIBCPP_HIDE_FROM_ABI void __flush(_CharT* __ptr, size_t __n) { + // A __flush to the direct writer happens in the following occasions: + // - The format function has written the maximum number of allowed code + // units. At this point it's no longer valid to write to this writer. So + // switch to the internal storage. This internal storage doesn't need to + // be written anywhere so the __flush for that storage writes no output. + // - Like above, but the next "mass write" operation would overflow the + // buffer. In that case the buffer is pre-emptively switched. The still + // valid code units will be written separately. + // - The format_to_n function is finished. In this case there's no need to + // switch the buffer, but for simplicity the buffers are still switched. + // When the __max_size <= 0 the constructor already switched the buffers. + if (__size_ == 0 && __ptr != __storage_.__begin()) { + __writer_.__flush(__ptr, __n); + __output_.__reset(__storage_.__begin(), __storage_.__buffer_size); + } else if (__size_ < __max_size_) { + // Copies a part of the internal buffer to the output up to n characters. + // See __output_buffer<_CharT>::__flush_on_overflow for more information. + _Size __s = _VSTD::min(_Size(__n), __max_size_ - __size_); + std::copy_n(__ptr, __s, __writer_.__out_it()); + __writer_.__flush(__ptr, __s); + } + + __size_ += __n; + } + +protected: + __internal_storage<_CharT> __storage_; + __output_buffer<_CharT> __output_; + __writer_direct<_OutIt, _CharT> __writer_; + + _Size __max_size_; + _Size __size_{0}; +}; + +/// The buffer that counts and limits the number of insertions. +template + requires(output_iterator<_OutIt, const _CharT&>) +struct _LIBCPP_TEMPLATE_VIS __format_to_n_buffer final + : public __format_to_n_buffer_base< _OutIt, _CharT, __enable_direct_output<_OutIt, _CharT>> { + using _Base = __format_to_n_buffer_base<_OutIt, _CharT, __enable_direct_output<_OutIt, _CharT>>; + using _Size = iter_difference_t<_OutIt>; + +public: + _LIBCPP_HIDE_FROM_ABI explicit __format_to_n_buffer(_OutIt __out_it, _Size __max_size) + : _Base(_VSTD::move(__out_it), __max_size) {} + _LIBCPP_HIDE_FROM_ABI auto __make_output_iterator() { return this->__output_.__make_output_iterator(); } + + _LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __result() && { + this->__output_.__flush(); + return {_VSTD::move(this->__writer_).__out_it(), this->__size_}; + } +}; + +// A dynamically growing buffer intended to be used for retargeting a context. +// +// P2286 Formatting ranges adds range formatting support. It allows the user to +// specify the minimum width for the entire formatted range. The width of the +// range is not known until the range is formatted. Formatting is done to an +// output_iterator so there's no guarantee it would be possible to add the fill +// to the front of the output. Instead the range is formatted to a temporary +// buffer and that buffer is formatted as a string. +// +// There is an issue with that approach, the format context used in +// std::formatter::format contains the output iterator used as part of its +// type. So using this output iterator means there needs to be a new format +// context and the format arguments need to be retargeted to the new context. +// This retargeting is done by a basic_format_context specialized for the +// __iterator of this container. +// +// This class uses its own buffer management, since using vector +// would lead to a circular include with formatter for vector. +template <__fmt_char_type _CharT> +class _LIBCPP_TEMPLATE_VIS __retarget_buffer { + using _Alloc = allocator<_CharT>; + +public: + using value_type = _CharT; + + struct __iterator { + using difference_type = ptrdiff_t; + using value_type = _CharT; + + _LIBCPP_HIDE_FROM_ABI constexpr explicit __iterator(__retarget_buffer& __buffer) + : __buffer_(std::addressof(__buffer)) {} + _LIBCPP_HIDE_FROM_ABI constexpr __iterator& operator=(const _CharT& __c) { + __buffer_->push_back(__c); + return *this; + } + _LIBCPP_HIDE_FROM_ABI constexpr __iterator& operator=(_CharT&& __c) { + __buffer_->push_back(__c); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __iterator& operator*() { return *this; } + _LIBCPP_HIDE_FROM_ABI constexpr __iterator& operator++() { return *this; } + _LIBCPP_HIDE_FROM_ABI constexpr __iterator operator++(int) { return *this; } + __retarget_buffer* __buffer_; + }; + + __retarget_buffer(const __retarget_buffer&) = delete; + __retarget_buffer& operator=(const __retarget_buffer&) = delete; + + _LIBCPP_HIDE_FROM_ABI explicit __retarget_buffer(size_t __size_hint) { + // When the initial size is very small a lot of resizes happen + // when elements added. So use a hard-coded minimum size. + // + // Note a size < 2 will not work + // - 0 there is no buffer, while push_back requires 1 empty element. + // - 1 multiplied by the grow factor is 1 and thus the buffer never + // grows. + auto __result = std::__allocate_at_least(__alloc_, std::max(__size_hint, 256 / sizeof(_CharT))); + __ptr_ = __result.ptr; + __capacity_ = __result.count; + } + + _LIBCPP_HIDE_FROM_ABI ~__retarget_buffer() { + ranges::destroy_n(__ptr_, __size_); + allocator_traits<_Alloc>::deallocate(__alloc_, __ptr_, __capacity_); + } + + _LIBCPP_HIDE_FROM_ABI __iterator __make_output_iterator() { return __iterator{*this}; } + + _LIBCPP_HIDE_FROM_ABI void push_back(_CharT __c) { + std::construct_at(__ptr_ + __size_, __c); + ++__size_; + + if (__size_ == __capacity_) + __grow_buffer(); + } + + template <__fmt_char_type _InCharT> + _LIBCPP_HIDE_FROM_ABI void __copy(basic_string_view<_InCharT> __str) { + size_t __n = __str.size(); + if (__size_ + __n >= __capacity_) + // Push_back requires the buffer to have room for at least one character. + __grow_buffer(__size_ + __n + 1); + + std::uninitialized_copy_n(__str.data(), __n, __ptr_ + __size_); + __size_ += __n; + } + + template <__fmt_char_type _InCharT, class _UnaryOperation> + _LIBCPP_HIDE_FROM_ABI void __transform(const _InCharT* __first, const _InCharT* __last, _UnaryOperation __operation) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "not a valid range"); + + size_t __n = static_cast(__last - __first); + if (__size_ + __n >= __capacity_) + // Push_back requires the buffer to have room for at least one character. + __grow_buffer(__size_ + __n + 1); + + std::uninitialized_default_construct_n(__ptr_ + __size_, __n); + std::transform(__first, __last, __ptr_ + __size_, std::move(__operation)); + __size_ += __n; + } + + _LIBCPP_HIDE_FROM_ABI void __fill(size_t __n, _CharT __value) { + if (__size_ + __n >= __capacity_) + // Push_back requires the buffer to have room for at least one character. + __grow_buffer(__size_ + __n + 1); + + std::uninitialized_fill_n(__ptr_ + __size_, __n, __value); + __size_ += __n; + } + + _LIBCPP_HIDE_FROM_ABI basic_string_view<_CharT> __view() { return {__ptr_, __size_}; } + +private: + _LIBCPP_HIDE_FROM_ABI void __grow_buffer() { __grow_buffer(__capacity_ * 1.6); } + + _LIBCPP_HIDE_FROM_ABI void __grow_buffer(size_t __capacity) { + _LIBCPP_ASSERT_UNCATEGORIZED(__capacity > __capacity_, "the buffer must grow"); + auto __result = std::__allocate_at_least(__alloc_, __capacity); + auto __guard = std::__make_exception_guard([&] { + allocator_traits<_Alloc>::deallocate(__alloc_, __result.ptr, __result.count); + }); + // This shouldn't throw, but just to be safe. Note that at -O1 this + // guard is optimized away so there is no runtime overhead. + std::uninitialized_move_n(__ptr_, __size_, __result.ptr); + __guard.__complete(); + ranges::destroy_n(__ptr_, __size_); + allocator_traits<_Alloc>::deallocate(__alloc_, __ptr_, __capacity_); + + __ptr_ = __result.ptr; + __capacity_ = __result.count; + } + _LIBCPP_NO_UNIQUE_ADDRESS _Alloc __alloc_; + _CharT* __ptr_; + size_t __capacity_; + size_t __size_{0}; +}; + +} // namespace __format + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FORMAT_BUFFER_H diff --git a/lib/libcxx/include/__format/concepts.h b/lib/libcxx/include/__format/concepts.h new file mode 100644 index 0000000..ae96b6a --- /dev/null +++ b/lib/libcxx/include/__format/concepts.h @@ -0,0 +1,81 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_CONCEPTS_H +#define _LIBCPP___FORMAT_CONCEPTS_H + +#include <__concepts/same_as.h> +#include <__concepts/semiregular.h> +#include <__config> +#include <__format/format_fwd.h> +#include <__format/format_parse_context.h> +#include <__type_traits/is_specialization.h> +#include <__type_traits/remove_const.h> +#include <__utility/pair.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +/// The character type specializations of \ref formatter. +template +concept __fmt_char_type = + same_as<_CharT, char> +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + || same_as<_CharT, wchar_t> +# endif + ; + +// The output iterator isn't specified. A formatter should accept any +// output_iterator. This iterator is a minimal iterator to test the concept. +// (Note testing for (w)format_context would be a valid choice, but requires +// selecting the proper one depending on the type of _CharT.) +template +using __fmt_iter_for = _CharT*; + +template >> +concept __formattable_with = + semiregular<_Formatter> && + requires(_Formatter& __f, + const _Formatter& __cf, + _Tp&& __t, + _Context __fc, + basic_format_parse_context __pc) { + { __f.parse(__pc) } -> same_as; + { __cf.format(__t, __fc) } -> same_as; + }; + +template +concept __formattable = + __formattable_with, basic_format_context<__fmt_iter_for<_CharT>, _CharT>>; + +# if _LIBCPP_STD_VER >= 23 +template +concept formattable = __formattable<_Tp, _CharT>; + +// [tuple.like] defines a tuple-like exposition only concept. This concept is +// not related to that. Therefore it uses a different name for the concept. +// +// TODO FMT Add a test to validate we fail when using that concept after P2165 +// has been implemented. +template +concept __fmt_pair_like = + __is_specialization_v<_Tp, pair> || (__is_specialization_v<_Tp, tuple> && tuple_size_v<_Tp> == 2); + +# endif //_LIBCPP_STD_VER >= 23 +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_CONCEPTS_H diff --git a/lib/libcxx/include/__format/container_adaptor.h b/lib/libcxx/include/__format/container_adaptor.h new file mode 100644 index 0000000..ec806ef --- /dev/null +++ b/lib/libcxx/include/__format/container_adaptor.h @@ -0,0 +1,73 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_CONTAINER_ADAPTOR_H +#define _LIBCPP___FORMAT_CONTAINER_ADAPTOR_H + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#include <__config> +#include <__format/concepts.h> +#include <__format/formatter.h> +#include <__format/range_default_formatter.h> +#include <__ranges/ref_view.h> +#include <__type_traits/is_const.h> +#include <__type_traits/maybe_const.h> +#include +#include + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +// [container.adaptors.format] only specifies the library should provide the +// formatter specializations, not which header should provide them. +// Since includes a lot of headers, add these headers here instead of +// adding more dependencies like, locale, optinal, string, tuple, etc. to the +// adaptor headers. To use the format functions users already include . + +template +struct _LIBCPP_TEMPLATE_VIS __formatter_container_adaptor { +private: + using __maybe_const_container = __fmt_maybe_const; + using __maybe_const_adaptor = __maybe_const, _Adaptor>; + formatter, _CharT> __underlying_; + +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return __underlying_.parse(__ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(__maybe_const_adaptor& __adaptor, _FormatContext& __ctx) const { + return __underlying_.format(__adaptor.__get_container(), __ctx); + } +}; + +template _Container> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_container_adaptor, _CharT> {}; + +template +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_container_adaptor, _CharT> {}; + +template _Container> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_container_adaptor, _CharT> {}; + +#endif //_LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_CONTAINER_ADAPTOR_H diff --git a/lib/libcxx/include/__format/enable_insertable.h b/lib/libcxx/include/__format/enable_insertable.h new file mode 100644 index 0000000..86ef94a --- /dev/null +++ b/lib/libcxx/include/__format/enable_insertable.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_ENABLE_INSERTABLE_H +#define _LIBCPP___FORMAT_ENABLE_INSERTABLE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format { + +/// Opt-in to enable \ref __insertable for a \a _Container. +template +inline constexpr bool __enable_insertable = false; + +} // namespace __format + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_ENABLE_INSERTABLE_H diff --git a/lib/libcxx/include/__format/escaped_output_table.h b/lib/libcxx/include/__format/escaped_output_table.h new file mode 100644 index 0000000..222847e --- /dev/null +++ b/lib/libcxx/include/__format/escaped_output_table.h @@ -0,0 +1,1038 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// WARNING, this entire header is generated by +// utils/generate_escaped_output_table.py +// DO NOT MODIFY! + +// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE +// +// See Terms of Use +// for definitions of Unicode Inc.'s Data Files and Software. +// +// NOTICE TO USER: Carefully read the following legal agreement. +// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S +// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"), +// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE +// TERMS AND CONDITIONS OF THIS AGREEMENT. +// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE +// THE DATA FILES OR SOFTWARE. +// +// COPYRIGHT AND PERMISSION NOTICE +// +// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved. +// Distributed under the Terms of Use in https://www.unicode.org/copyright.html. +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of the Unicode data files and any associated documentation +// (the "Data Files") or Unicode software and any associated documentation +// (the "Software") to deal in the Data Files or Software +// without restriction, including without limitation the rights to use, +// copy, modify, merge, publish, distribute, and/or sell copies of +// the Data Files or Software, and to permit persons to whom the Data Files +// or Software are furnished to do so, provided that either +// (a) this copyright and permission notice appear with all copies +// of the Data Files or Software, or +// (b) this copyright and permission notice appear in associated +// Documentation. +// +// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF +// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT OF THIRD PARTY RIGHTS. +// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS +// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL +// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, +// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER +// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +// PERFORMANCE OF THE DATA FILES OR SOFTWARE. +// +// Except as contained in this notice, the name of a copyright holder +// shall not be used in advertising or otherwise to promote the sale, +// use or other dealings in these Data Files or Software without prior +// written authorization of the copyright holder. + +#ifndef _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H +#define _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H + +#include <__algorithm/ranges_upper_bound.h> +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +namespace __escaped_output_table { + +/// The entries of the characters to escape in format's debug string. +/// +/// Contains the entries for [format.string.escaped]/2.2.1.2.1 +/// CE is a Unicode encoding and C corresponds to either a UCS scalar value +/// whose Unicode property General_Category has a value in the groups +/// Separator (Z) or Other (C) or to a UCS scalar value which has the Unicode +/// property Grapheme_Extend=Yes, as described by table 12 of UAX #44 +/// +/// Separator (Z) consists of General_Category +/// - Space_Separator, +/// - Line_Separator, +/// - Paragraph_Separator. +/// +/// Other (C) consists of General_Category +/// - Control, +/// - Format, +/// - Surrogate, +/// - Private_Use, +/// - Unassigned. +/// +/// The data is generated from +/// - https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt +/// - https://www.unicode.org/Public/UCD/latest/ucd/extracted/DerivedGeneralCategory.txt +/// +/// The table is similar to the table +/// __extended_grapheme_custer_property_boundary::__entries +/// which explains the details of these classes. The only difference is this +/// table lacks a property, thus having more bits available for the size. +/// +/// The data has 2 values: +/// - bits [0, 10] The size of the range, allowing 2048 elements. +/// - bits [11, 31] The lower bound code point of the range. The upper bound of +/// the range is lower bound + size. +inline constexpr uint32_t __entries[893] = { + 0x00000020, + 0x0003f821, + 0x00056800, + 0x0018006f, + 0x001bc001, + 0x001c0003, + 0x001c5800, + 0x001c6800, + 0x001d1000, + 0x00241806, + 0x00298000, + 0x002ab801, + 0x002c5801, + 0x002c802d, + 0x002df800, + 0x002e0801, + 0x002e2001, + 0x002e3808, + 0x002f5803, + 0x002fa810, + 0x0030800a, + 0x0030e000, + 0x00325814, + 0x00338000, + 0x0036b007, + 0x0036f805, + 0x00373801, + 0x00375003, + 0x00387001, + 0x00388800, + 0x0039801c, + 0x003d300a, + 0x003d900d, + 0x003f5808, + 0x003fd802, + 0x0040b003, + 0x0040d808, + 0x00412802, + 0x00414806, + 0x0041f800, + 0x0042c804, + 0x0042f800, + 0x00435804, + 0x00447810, + 0x00465038, + 0x0049d000, + 0x0049e000, + 0x004a0807, + 0x004a6800, + 0x004a8806, + 0x004b1001, + 0x004c0800, + 0x004c2000, + 0x004c6801, + 0x004c8801, + 0x004d4800, + 0x004d8800, + 0x004d9802, + 0x004dd002, + 0x004df000, + 0x004e0805, + 0x004e4801, + 0x004e6800, + 0x004e780c, + 0x004ef000, + 0x004f1003, + 0x004ff004, + 0x00502000, + 0x00505803, + 0x00508801, + 0x00514800, + 0x00518800, + 0x0051a000, + 0x0051b800, + 0x0051d003, + 0x00520817, + 0x0052e800, + 0x0052f806, + 0x00538001, + 0x0053a800, + 0x0053b80b, + 0x00542000, + 0x00547000, + 0x00549000, + 0x00554800, + 0x00558800, + 0x0055a000, + 0x0055d002, + 0x00560807, + 0x00565000, + 0x00566802, + 0x0056880e, + 0x00571003, + 0x00579006, + 0x0057d007, + 0x00582000, + 0x00586801, + 0x00588801, + 0x00594800, + 0x00598800, + 0x0059a000, + 0x0059d002, + 0x0059f001, + 0x005a0805, + 0x005a4801, + 0x005a680e, + 0x005af000, + 0x005b1003, + 0x005bc00a, + 0x005c2000, + 0x005c5802, + 0x005c8800, + 0x005cb002, + 0x005cd800, + 0x005ce800, + 0x005d0002, + 0x005d2802, + 0x005d5802, + 0x005dd004, + 0x005e0000, + 0x005e1802, + 0x005e4800, + 0x005e6802, + 0x005e8814, + 0x005fd805, + 0x00602000, + 0x00606800, + 0x00608800, + 0x00614800, + 0x0061d002, + 0x0061f002, + 0x00622812, + 0x0062d801, + 0x0062f001, + 0x00631003, + 0x00638006, + 0x00640800, + 0x00646800, + 0x00648800, + 0x00654800, + 0x0065a000, + 0x0065d002, + 0x0065f800, + 0x00661000, + 0x00662801, + 0x00664800, + 0x00666010, + 0x0066f800, + 0x00671003, + 0x00678000, + 0x0067a00d, + 0x00686800, + 0x00688800, + 0x0069d801, + 0x0069f000, + 0x006a0804, + 0x006a4800, + 0x006a6800, + 0x006a8003, + 0x006ab800, + 0x006b1003, + 0x006c0001, + 0x006c2000, + 0x006cb802, + 0x006d9000, + 0x006de000, + 0x006df001, + 0x006e3808, + 0x006e9005, + 0x006ef806, + 0x006f8001, + 0x006fa80b, + 0x00718800, + 0x0071a00a, + 0x00723807, + 0x0072e024, + 0x00741800, + 0x00742800, + 0x00745800, + 0x00752000, + 0x00753000, + 0x00758800, + 0x0075a008, + 0x0075f001, + 0x00762800, + 0x00763808, + 0x0076d001, + 0x0077001f, + 0x0078c001, + 0x0079a800, + 0x0079b800, + 0x0079c800, + 0x007a4000, + 0x007b6811, + 0x007c0004, + 0x007c3001, + 0x007c6830, + 0x007e3000, + 0x007e6800, + 0x007ed824, + 0x00816803, + 0x00819005, + 0x0081c801, + 0x0081e801, + 0x0082c001, + 0x0082f002, + 0x00838803, + 0x00841000, + 0x00842801, + 0x00846800, + 0x0084e800, + 0x00863000, + 0x00864004, + 0x00867001, + 0x00924800, + 0x00927001, + 0x0092b800, + 0x0092c800, + 0x0092f001, + 0x00944800, + 0x00947001, + 0x00958800, + 0x0095b001, + 0x0095f800, + 0x00960800, + 0x00963001, + 0x0096b800, + 0x00988800, + 0x0098b001, + 0x009ad804, + 0x009be802, + 0x009cd005, + 0x009fb001, + 0x009ff001, + 0x00b40000, + 0x00b4e802, + 0x00b7c806, + 0x00b89002, + 0x00b8b008, + 0x00b99001, + 0x00b9b808, + 0x00ba900d, + 0x00bb6800, + 0x00bb880e, + 0x00bda001, + 0x00bdb806, + 0x00be3000, + 0x00be480a, + 0x00bee802, + 0x00bf5005, + 0x00bfd005, + 0x00c05804, + 0x00c0d005, + 0x00c3c806, + 0x00c42801, + 0x00c54800, + 0x00c55804, + 0x00c7b009, + 0x00c8f803, + 0x00c93801, + 0x00c96003, + 0x00c99000, + 0x00c9c806, + 0x00ca0802, + 0x00cb7001, + 0x00cba80a, + 0x00cd6003, + 0x00ce5005, + 0x00ced802, + 0x00d0b801, + 0x00d0d802, + 0x00d2b000, + 0x00d2c008, + 0x00d31000, + 0x00d32807, + 0x00d3980c, + 0x00d45005, + 0x00d4d005, + 0x00d57055, + 0x00d9a006, + 0x00d9e000, + 0x00da1000, + 0x00da6802, + 0x00db5808, + 0x00dbf802, + 0x00dd1003, + 0x00dd4001, + 0x00dd5802, + 0x00df3000, + 0x00df4001, + 0x00df6800, + 0x00df7802, + 0x00dfa007, + 0x00e16007, + 0x00e1b004, + 0x00e25002, + 0x00e44806, + 0x00e5d801, + 0x00e6400a, + 0x00e6a00c, + 0x00e71006, + 0x00e76800, + 0x00e7a000, + 0x00e7c001, + 0x00e7d804, + 0x00ee003f, + 0x00f8b001, + 0x00f8f001, + 0x00fa3001, + 0x00fa7001, + 0x00fac000, + 0x00fad000, + 0x00fae000, + 0x00faf000, + 0x00fbf001, + 0x00fda800, + 0x00fe2800, + 0x00fea001, + 0x00fee000, + 0x00ff8001, + 0x00ffa800, + 0x00fff810, + 0x01014007, + 0x0102f810, + 0x01039001, + 0x01047800, + 0x0104e802, + 0x0106083e, + 0x010c6003, + 0x01213818, + 0x01225814, + 0x015ba001, + 0x015cb000, + 0x01677802, + 0x0167a004, + 0x01693000, + 0x01694004, + 0x01697001, + 0x016b4006, + 0x016b880e, + 0x016cb808, + 0x016d3800, + 0x016d7800, + 0x016db800, + 0x016df800, + 0x016e3800, + 0x016e7800, + 0x016eb800, + 0x016ef820, + 0x0172f021, + 0x0174d000, + 0x0177a00b, + 0x017eb019, + 0x017fe004, + 0x01815005, + 0x01820000, + 0x0184b803, + 0x01880004, + 0x01898000, + 0x018c7800, + 0x018f200b, + 0x0190f800, + 0x05246802, + 0x05263808, + 0x05316013, + 0x05337803, + 0x0533a009, + 0x0534f001, + 0x05378001, + 0x0537c007, + 0x053e5804, + 0x053e9000, + 0x053ea000, + 0x053ed017, + 0x05401000, + 0x05403000, + 0x05405800, + 0x05412801, + 0x05416003, + 0x0541d005, + 0x0543c007, + 0x05462009, + 0x0546d017, + 0x0547f800, + 0x05493007, + 0x054a380a, + 0x054aa00a, + 0x054be805, + 0x054d9800, + 0x054db003, + 0x054de001, + 0x054e7000, + 0x054ed003, + 0x054f2800, + 0x054ff800, + 0x05514805, + 0x05518801, + 0x0551a80a, + 0x05521800, + 0x05526000, + 0x05527001, + 0x0552d001, + 0x0553e000, + 0x05558000, + 0x05559002, + 0x0555b801, + 0x0555f001, + 0x05560800, + 0x05561817, + 0x05576001, + 0x0557b00a, + 0x05583801, + 0x05587801, + 0x0558b808, + 0x05593800, + 0x05597800, + 0x055b6003, + 0x055f2800, + 0x055f4000, + 0x055f6802, + 0x055fd005, + 0x06bd200b, + 0x06be3803, + 0x06bfe7ff, + 0x06ffe7ff, + 0x073fe7ff, + 0x077fe7ff, + 0x07bfe103, + 0x07d37001, + 0x07d6d025, + 0x07d8380b, + 0x07d8c004, + 0x07d8f000, + 0x07d9b800, + 0x07d9e800, + 0x07d9f800, + 0x07da1000, + 0x07da2800, + 0x07de180f, + 0x07ec8001, + 0x07ee4006, + 0x07ee801f, + 0x07f0000f, + 0x07f0d015, + 0x07f29800, + 0x07f33800, + 0x07f36003, + 0x07f3a800, + 0x07f7e803, + 0x07fcf001, + 0x07fdf802, + 0x07fe4001, + 0x07fe8001, + 0x07fec001, + 0x07fee802, + 0x07ff3800, + 0x07ff780c, + 0x07fff001, + 0x08006000, + 0x08013800, + 0x0801d800, + 0x0801f000, + 0x08027001, + 0x0802f021, + 0x0807d804, + 0x08081803, + 0x0809a002, + 0x080c7800, + 0x080ce802, + 0x080d082e, + 0x080fe882, + 0x0814e802, + 0x0816880f, + 0x0817e003, + 0x08192008, + 0x081a5804, + 0x081bb009, + 0x081cf000, + 0x081e2003, + 0x081eb029, + 0x0824f001, + 0x08255005, + 0x0826a003, + 0x0827e003, + 0x08294007, + 0x082b200a, + 0x082bd800, + 0x082c5800, + 0x082c9800, + 0x082cb000, + 0x082d1000, + 0x082d9000, + 0x082dd000, + 0x082de842, + 0x0839b808, + 0x083ab009, + 0x083b4017, + 0x083c3000, + 0x083d8800, + 0x083dd844, + 0x08403001, + 0x08404800, + 0x0841b000, + 0x0841c802, + 0x0841e801, + 0x0842b000, + 0x0844f807, + 0x0845802f, + 0x08479800, + 0x0847b004, + 0x0848e002, + 0x0849d004, + 0x084a003f, + 0x084dc003, + 0x084e8001, + 0x0850080e, + 0x0850a000, + 0x0850c000, + 0x0851b009, + 0x08524806, + 0x0852c806, + 0x0855001f, + 0x08572805, + 0x0857b808, + 0x0859b002, + 0x085ab001, + 0x085b9804, + 0x085c9006, + 0x085ce80b, + 0x085d804f, + 0x08624836, + 0x0865980c, + 0x08679806, + 0x0869200b, + 0x0869d125, + 0x0873f800, + 0x08755002, + 0x08757001, + 0x0875904d, + 0x08794007, + 0x087a300a, + 0x087ad015, + 0x087c1003, + 0x087c5025, + 0x087e6013, + 0x087fb808, + 0x08800800, + 0x0881c00e, + 0x08827003, + 0x08838000, + 0x08839801, + 0x0883b00b, + 0x08859803, + 0x0885c801, + 0x0885e800, + 0x0886100d, + 0x08874806, + 0x0887d008, + 0x08893804, + 0x08896808, + 0x088a4007, + 0x088b9800, + 0x088bb80a, + 0x088db008, + 0x088e4803, + 0x088e7800, + 0x088f0000, + 0x088fa80a, + 0x08909000, + 0x08917802, + 0x0891a000, + 0x0891b001, + 0x0891f000, + 0x0892083e, + 0x08943800, + 0x08944800, + 0x08947000, + 0x0894f000, + 0x08955005, + 0x0896f800, + 0x0897180c, + 0x0897d007, + 0x08982000, + 0x08986801, + 0x08988801, + 0x08994800, + 0x08998800, + 0x0899a000, + 0x0899d002, + 0x0899f000, + 0x089a0000, + 0x089a2801, + 0x089a4801, + 0x089a7001, + 0x089a880b, + 0x089b209b, + 0x08a1c007, + 0x08a21002, + 0x08a23000, + 0x08a2e000, + 0x08a2f000, + 0x08a3101d, + 0x08a58000, + 0x08a59805, + 0x08a5d000, + 0x08a5e800, + 0x08a5f801, + 0x08a61001, + 0x08a64007, + 0x08a6d0a5, + 0x08ad7800, + 0x08ad9005, + 0x08ade001, + 0x08adf801, + 0x08aee023, + 0x08b19807, + 0x08b1e800, + 0x08b1f801, + 0x08b2280a, + 0x08b2d005, + 0x08b36812, + 0x08b55800, + 0x08b56800, + 0x08b58005, + 0x08b5b800, + 0x08b5d005, + 0x08b65035, + 0x08b8d804, + 0x08b91003, + 0x08b93808, + 0x08ba38b8, + 0x08c17808, + 0x08c1c801, + 0x08c1e063, + 0x08c7980b, + 0x08c83801, + 0x08c85001, + 0x08c8a000, + 0x08c8b800, + 0x08c98000, + 0x08c9b000, + 0x08c9c803, + 0x08c9f000, + 0x08ca1800, + 0x08ca3808, + 0x08cad045, + 0x08cd4001, + 0x08cea007, + 0x08cf0000, + 0x08cf281a, + 0x08d00809, + 0x08d19805, + 0x08d1d803, + 0x08d23808, + 0x08d28805, + 0x08d2c802, + 0x08d4500c, + 0x08d4c001, + 0x08d5180c, + 0x08d7c806, + 0x08d850f5, + 0x08e04800, + 0x08e1800d, + 0x08e1f800, + 0x08e23009, + 0x08e36802, + 0x08e48018, + 0x08e55006, + 0x08e59001, + 0x08e5a84a, + 0x08e83800, + 0x08e85000, + 0x08e98814, + 0x08ea3808, + 0x08ead005, + 0x08eb3000, + 0x08eb4800, + 0x08ec7803, + 0x08eca800, + 0x08ecb800, + 0x08ecc806, + 0x08ed5135, + 0x08f79801, + 0x08f7c808, + 0x08f88800, + 0x08f9b007, + 0x08fa0000, + 0x08fa1000, + 0x08fad055, + 0x08fd880e, + 0x08ff900c, + 0x091cd065, + 0x09237800, + 0x0923a80a, + 0x092a27ff, + 0x096a224b, + 0x097f980c, + 0x09a18010, + 0x09a23fff, + 0x09e23fb8, + 0x0a323fff, + 0x0a723fff, + 0x0ab23fff, + 0x0af23fff, + 0x0b3239b8, + 0x0b51c806, + 0x0b52f800, + 0x0b535003, + 0x0b55f800, + 0x0b565005, + 0x0b577006, + 0x0b57b009, + 0x0b598006, + 0x0b5a3009, + 0x0b5ad000, + 0x0b5b1000, + 0x0b5bc004, + 0x0b5c82af, + 0x0b74d864, + 0x0b7a5804, + 0x0b7c400a, + 0x0b7d003f, + 0x0b7f200b, + 0x0b7f900d, + 0x0c3fc007, + 0x0c66b029, + 0x0c684fff, + 0x0ca84fff, + 0x0ce84fff, + 0x0d284fff, + 0x0d684ae6, + 0x0d7fa000, + 0x0d7fe000, + 0x0d7ff800, + 0x0d89180e, + 0x0d89981c, + 0x0d8a9801, + 0x0d8ab00d, + 0x0d8b4007, + 0x0d97e7ff, + 0x0dd7e103, + 0x0de35804, + 0x0de3e802, + 0x0de44806, + 0x0de4d001, + 0x0de4e801, + 0x0de507ff, + 0x0e2507ff, + 0x0e6502af, + 0x0e7e203b, + 0x0e87b009, + 0x0e893801, + 0x0e8b2800, + 0x0e8b3802, + 0x0e8b7014, + 0x0e8c2806, + 0x0e8d5003, + 0x0e8f5814, + 0x0e921002, + 0x0e923079, + 0x0e96a00b, + 0x0e97a00b, + 0x0e9ab808, + 0x0e9bc886, + 0x0ea2a800, + 0x0ea4e800, + 0x0ea50001, + 0x0ea51801, + 0x0ea53801, + 0x0ea56800, + 0x0ea5d000, + 0x0ea5e000, + 0x0ea62000, + 0x0ea83000, + 0x0ea85801, + 0x0ea8a800, + 0x0ea8e800, + 0x0ea9d000, + 0x0ea9f800, + 0x0eaa2800, + 0x0eaa3802, + 0x0eaa8800, + 0x0eb53001, + 0x0ebe6001, + 0x0ed00036, + 0x0ed1d831, + 0x0ed3a800, + 0x0ed42000, + 0x0ed46473, + 0x0ef8f805, + 0x0ef95904, + 0x0f037091, + 0x0f096809, + 0x0f09f001, + 0x0f0a5003, + 0x0f0a813f, + 0x0f157011, + 0x0f176003, + 0x0f17d004, + 0x0f1801cf, + 0x0f276003, + 0x0f27d2e5, + 0x0f3f3800, + 0x0f3f6000, + 0x0f3f7800, + 0x0f3ff800, + 0x0f462801, + 0x0f46802f, + 0x0f4a2006, + 0x0f4a6003, + 0x0f4ad003, + 0x0f4b0310, + 0x0f65a84b, + 0x0f69f0c1, + 0x0f702000, + 0x0f710000, + 0x0f711800, + 0x0f712801, + 0x0f714000, + 0x0f719800, + 0x0f71c000, + 0x0f71d000, + 0x0f71e005, + 0x0f721803, + 0x0f724000, + 0x0f725000, + 0x0f726000, + 0x0f728000, + 0x0f729800, + 0x0f72a801, + 0x0f72c000, + 0x0f72d000, + 0x0f72e000, + 0x0f72f000, + 0x0f730000, + 0x0f731800, + 0x0f732801, + 0x0f735800, + 0x0f739800, + 0x0f73c000, + 0x0f73e800, + 0x0f73f800, + 0x0f745000, + 0x0f74e004, + 0x0f752000, + 0x0f755000, + 0x0f75e033, + 0x0f77910d, + 0x0f816003, + 0x0f84a00b, + 0x0f857801, + 0x0f860000, + 0x0f868000, + 0x0f87b009, + 0x0f8d7037, + 0x0f90180c, + 0x0f91e003, + 0x0f924806, + 0x0f92900d, + 0x0f933099, + 0x0fb6c003, + 0x0fb76802, + 0x0fb7e802, + 0x0fbbb803, + 0x0fbed005, + 0x0fbf6003, + 0x0fbf880e, + 0x0fc06003, + 0x0fc24007, + 0x0fc2d005, + 0x0fc44007, + 0x0fc57001, + 0x0fc5904d, + 0x0fd2a00b, + 0x0fd37001, + 0x0fd3e802, + 0x0fd44806, + 0x0fd5f000, + 0x0fd63007, + 0x0fd6e003, + 0x0fd74806, + 0x0fd7c806, + 0x0fdc9800, + 0x0fde5824, + 0x0fdfd405, + 0x1537001f, + 0x15b9d005, + 0x15c0f001, + 0x1675100d, + 0x175f0fff, + 0x179f0c1e, + 0x17d0f5e1, + 0x189a5804}; + +/// At the end of the valid Unicode code points space a lot of code points are +/// either reserved or a noncharacter. Adding all these entries to the +/// lookup table would add 446 entries to the table (in Unicode 14). +/// Instead the only the start of the region is stored, every code point in +/// this region needs to be escaped. +inline constexpr uint32_t __unallocated_region_lower_bound = 0x000323b0; + +/// Returns whether the code unit needs to be escaped. +/// +/// \pre The code point is a valid Unicode code point. +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool __needs_escape(const char32_t __code_point) noexcept { + // Since __unallocated_region_lower_bound contains the unshifted range do the + // comparison without shifting. + if (__code_point >= __unallocated_region_lower_bound) + return true; + + ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 11) | 0x7ffu) - __entries; + if (__i == 0) + return false; + + --__i; + uint32_t __upper_bound = (__entries[__i] >> 11) + (__entries[__i] & 0x7ffu); + return __code_point <= __upper_bound; +} + +} // namespace __escaped_output_table + +#endif //_LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H diff --git a/lib/libcxx/include/__format/extended_grapheme_cluster_table.h b/lib/libcxx/include/__format/extended_grapheme_cluster_table.h new file mode 100644 index 0000000..bd6d39f --- /dev/null +++ b/lib/libcxx/include/__format/extended_grapheme_cluster_table.h @@ -0,0 +1,1661 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// WARNING, this entire header is generated by +// utils/generate_extended_grapheme_cluster_table.py +// DO NOT MODIFY! + +// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE +// +// See Terms of Use +// for definitions of Unicode Inc.'s Data Files and Software. +// +// NOTICE TO USER: Carefully read the following legal agreement. +// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S +// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"), +// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE +// TERMS AND CONDITIONS OF THIS AGREEMENT. +// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE +// THE DATA FILES OR SOFTWARE. +// +// COPYRIGHT AND PERMISSION NOTICE +// +// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved. +// Distributed under the Terms of Use in https://www.unicode.org/copyright.html. +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of the Unicode data files and any associated documentation +// (the "Data Files") or Unicode software and any associated documentation +// (the "Software") to deal in the Data Files or Software +// without restriction, including without limitation the rights to use, +// copy, modify, merge, publish, distribute, and/or sell copies of +// the Data Files or Software, and to permit persons to whom the Data Files +// or Software are furnished to do so, provided that either +// (a) this copyright and permission notice appear with all copies +// of the Data Files or Software, or +// (b) this copyright and permission notice appear in associated +// Documentation. +// +// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF +// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT OF THIRD PARTY RIGHTS. +// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS +// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL +// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, +// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER +// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +// PERFORMANCE OF THE DATA FILES OR SOFTWARE. +// +// Except as contained in this notice, the name of a copyright holder +// shall not be used in advertising or otherwise to promote the sale, +// use or other dealings in these Data Files or Software without prior +// written authorization of the copyright holder. + +#ifndef _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H +#define _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H + +#include <__algorithm/ranges_upper_bound.h> +#include <__config> +#include <__iterator/access.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __extended_grapheme_custer_property_boundary { + +enum class __property : uint8_t { + // Values generated from the data files. + __CR, + __Control, + __Extend, + __Extended_Pictographic, + __L, + __LF, + __LV, + __LVT, + __Prepend, + __Regional_Indicator, + __SpacingMark, + __T, + __V, + __ZWJ, + + // The properies below aren't stored in the "database". + + // Text position properties. + __sot, + __eot, + + // The code unit has none of above properties. + __none +}; + +/// The entries of the extended grapheme cluster bondary property table. +/// +/// The data is generated from +/// - https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt +/// - https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt +/// +/// The data has 3 values +/// - bits [0, 3] The property. One of the values generated from the datafiles +/// of \ref __property +/// - bits [4, 10] The size of the range. +/// - bits [11, 31] The lower bound code point of the range. The upper bound of +/// the range is lower bound + size. +/// +/// The 7 bits for the size allow a maximum range of 128 elements. Some ranges +/// in the Unicode tables are larger. They are stored in multiple consecutive +/// ranges in the data table. An alternative would be to store the sizes in a +/// separate 16-bit value. The original MSVC STL code had such an approach, but +/// this approach uses less space for the data and is about 4% faster in the +/// following benchmark. +/// libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp +inline constexpr uint32_t __entries[1496] = { + 0x00000091, + 0x00005005, + 0x00005811, + 0x00006800, + 0x00007111, + 0x0003fa01, + 0x00054803, + 0x00056801, + 0x00057003, + 0x001806f2, + 0x00241862, + 0x002c8ac2, + 0x002df802, + 0x002e0812, + 0x002e2012, + 0x002e3802, + 0x00300058, + 0x003080a2, + 0x0030e001, + 0x00325942, + 0x00338002, + 0x0036b062, + 0x0036e808, + 0x0036f852, + 0x00373812, + 0x00375032, + 0x00387808, + 0x00388802, + 0x003981a2, + 0x003d30a2, + 0x003f5882, + 0x003fe802, + 0x0040b032, + 0x0040d882, + 0x00412822, + 0x00414842, + 0x0042c822, + 0x00448018, + 0x0044c072, + 0x00465172, + 0x00471008, + 0x004719f2, + 0x0048180a, + 0x0049d002, + 0x0049d80a, + 0x0049e002, + 0x0049f02a, + 0x004a0872, + 0x004a483a, + 0x004a6802, + 0x004a701a, + 0x004a8862, + 0x004b1012, + 0x004c0802, + 0x004c101a, + 0x004de002, + 0x004df002, + 0x004df81a, + 0x004e0832, + 0x004e381a, + 0x004e581a, + 0x004e6802, + 0x004eb802, + 0x004f1012, + 0x004ff002, + 0x00500812, + 0x0050180a, + 0x0051e002, + 0x0051f02a, + 0x00520812, + 0x00523812, + 0x00525822, + 0x00528802, + 0x00538012, + 0x0053a802, + 0x00540812, + 0x0054180a, + 0x0055e002, + 0x0055f02a, + 0x00560842, + 0x00563812, + 0x0056480a, + 0x0056581a, + 0x00566802, + 0x00571012, + 0x0057d052, + 0x00580802, + 0x0058101a, + 0x0059e002, + 0x0059f012, + 0x005a000a, + 0x005a0832, + 0x005a381a, + 0x005a581a, + 0x005a6802, + 0x005aa822, + 0x005b1012, + 0x005c1002, + 0x005df002, + 0x005df80a, + 0x005e0002, + 0x005e081a, + 0x005e302a, + 0x005e502a, + 0x005e6802, + 0x005eb802, + 0x00600002, + 0x0060082a, + 0x00602002, + 0x0061e002, + 0x0061f022, + 0x0062083a, + 0x00623022, + 0x00625032, + 0x0062a812, + 0x00631012, + 0x00640802, + 0x0064101a, + 0x0065e002, + 0x0065f00a, + 0x0065f802, + 0x0066001a, + 0x00661002, + 0x0066181a, + 0x00663002, + 0x0066381a, + 0x0066501a, + 0x00666012, + 0x0066a812, + 0x00671012, + 0x0067980a, + 0x00680012, + 0x0068101a, + 0x0069d812, + 0x0069f002, + 0x0069f81a, + 0x006a0832, + 0x006a302a, + 0x006a502a, + 0x006a6802, + 0x006a7008, + 0x006ab802, + 0x006b1012, + 0x006c0802, + 0x006c101a, + 0x006e5002, + 0x006e7802, + 0x006e801a, + 0x006e9022, + 0x006eb002, + 0x006ec06a, + 0x006ef802, + 0x006f901a, + 0x00718802, + 0x0071980a, + 0x0071a062, + 0x00723872, + 0x00758802, + 0x0075980a, + 0x0075a082, + 0x00764062, + 0x0078c012, + 0x0079a802, + 0x0079b802, + 0x0079c802, + 0x0079f01a, + 0x007b88d2, + 0x007bf80a, + 0x007c0042, + 0x007c3012, + 0x007c68a2, + 0x007cca32, + 0x007e3002, + 0x00816832, + 0x0081880a, + 0x00819052, + 0x0081c812, + 0x0081d81a, + 0x0081e812, + 0x0082b01a, + 0x0082c012, + 0x0082f022, + 0x00838832, + 0x00841002, + 0x0084200a, + 0x00842812, + 0x00846802, + 0x0084e802, + 0x008805f4, + 0x008b047c, + 0x008d457b, + 0x009ae822, + 0x00b89022, + 0x00b8a80a, + 0x00b99012, + 0x00b9a00a, + 0x00ba9012, + 0x00bb9012, + 0x00bda012, + 0x00bdb00a, + 0x00bdb862, + 0x00bdf07a, + 0x00be3002, + 0x00be381a, + 0x00be48a2, + 0x00bee802, + 0x00c05822, + 0x00c07001, + 0x00c07802, + 0x00c42812, + 0x00c54802, + 0x00c90022, + 0x00c9183a, + 0x00c93812, + 0x00c9482a, + 0x00c9801a, + 0x00c99002, + 0x00c9985a, + 0x00c9c822, + 0x00d0b812, + 0x00d0c81a, + 0x00d0d802, + 0x00d2a80a, + 0x00d2b002, + 0x00d2b80a, + 0x00d2c062, + 0x00d30002, + 0x00d31002, + 0x00d32872, + 0x00d3685a, + 0x00d39892, + 0x00d3f802, + 0x00d581e2, + 0x00d80032, + 0x00d8200a, + 0x00d9a062, + 0x00d9d80a, + 0x00d9e002, + 0x00d9e84a, + 0x00da1002, + 0x00da181a, + 0x00db5882, + 0x00dc0012, + 0x00dc100a, + 0x00dd080a, + 0x00dd1032, + 0x00dd301a, + 0x00dd4012, + 0x00dd500a, + 0x00dd5822, + 0x00df3002, + 0x00df380a, + 0x00df4012, + 0x00df502a, + 0x00df6802, + 0x00df700a, + 0x00df7822, + 0x00df901a, + 0x00e1207a, + 0x00e16072, + 0x00e1a01a, + 0x00e1b012, + 0x00e68022, + 0x00e6a0c2, + 0x00e7080a, + 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0x07f100f2, + 0x07f7f801, + 0x07fcf012, + 0x07ff80b1, + 0x080fe802, + 0x08170002, + 0x081bb042, + 0x08500822, + 0x08502812, + 0x08506032, + 0x0851c022, + 0x0851f802, + 0x08572812, + 0x08692032, + 0x08755812, + 0x0877e822, + 0x087a30a2, + 0x087c1032, + 0x0880000a, + 0x08800802, + 0x0880100a, + 0x0881c0e2, + 0x08838002, + 0x08839812, + 0x0883f822, + 0x0884100a, + 0x0885802a, + 0x08859832, + 0x0885b81a, + 0x0885c812, + 0x0885e808, + 0x08861002, + 0x08866808, + 0x08880022, + 0x08893842, + 0x0889600a, + 0x08896872, + 0x088a281a, + 0x088b9802, + 0x088c0012, + 0x088c100a, + 0x088d982a, + 0x088db082, + 0x088df81a, + 0x088e1018, + 0x088e4832, + 0x088e700a, + 0x088e7802, + 0x0891602a, + 0x08917822, + 0x0891901a, + 0x0891a002, + 0x0891a80a, + 0x0891b012, + 0x0891f002, + 0x08920802, + 0x0896f802, + 0x0897002a, + 0x08971872, + 0x08980012, + 0x0898101a, + 0x0899d812, + 0x0899f002, + 0x0899f80a, + 0x089a0002, + 0x089a083a, + 0x089a381a, + 0x089a582a, + 0x089ab802, + 0x089b101a, + 0x089b3062, + 0x089b8042, + 0x08a1a82a, + 0x08a1c072, + 0x08a2001a, + 0x08a21022, + 0x08a2280a, + 0x08a23002, + 0x08a2f002, + 0x08a58002, + 0x08a5881a, + 0x08a59852, + 0x08a5c80a, + 0x08a5d002, + 0x08a5d81a, + 0x08a5e802, + 0x08a5f00a, + 0x08a5f812, + 0x08a6080a, + 0x08a61012, + 0x08ad7802, + 0x08ad801a, + 0x08ad9032, + 0x08adc03a, + 0x08ade012, + 0x08adf00a, + 0x08adf812, + 0x08aee012, + 0x08b1802a, + 0x08b19872, + 0x08b1d81a, + 0x08b1e802, + 0x08b1f00a, + 0x08b1f812, + 0x08b55802, + 0x08b5600a, + 0x08b56802, + 0x08b5701a, + 0x08b58052, + 0x08b5b00a, + 0x08b5b802, + 0x08b8e822, + 0x08b91032, + 0x08b9300a, + 0x08b93842, + 0x08c1602a, + 0x08c17882, + 0x08c1c00a, + 0x08c1c812, + 0x08c98002, + 0x08c9884a, + 0x08c9b81a, + 0x08c9d812, + 0x08c9e80a, + 0x08c9f002, + 0x08c9f808, + 0x08ca000a, + 0x08ca0808, + 0x08ca100a, + 0x08ca1802, + 0x08ce882a, + 0x08cea032, + 0x08ced012, + 0x08cee03a, + 0x08cf0002, + 0x08cf200a, + 0x08d00892, + 0x08d19852, + 0x08d1c80a, + 0x08d1d008, + 0x08d1d832, + 0x08d23802, + 0x08d28852, + 0x08d2b81a, + 0x08d2c822, + 0x08d42058, + 0x08d450c2, + 0x08d4b80a, + 0x08d4c012, + 0x08e1780a, + 0x08e18062, + 0x08e1c052, + 0x08e1f00a, + 0x08e1f802, + 0x08e49152, + 0x08e5480a, + 0x08e55062, + 0x08e5880a, + 0x08e59012, + 0x08e5a00a, + 0x08e5a812, + 0x08e98852, + 0x08e9d002, + 0x08e9e012, + 0x08e9f862, + 0x08ea3008, + 0x08ea3802, + 0x08ec504a, + 0x08ec8012, + 0x08ec981a, + 0x08eca802, + 0x08ecb00a, + 0x08ecb802, + 0x08f79812, + 0x08f7a81a, + 0x08f80012, + 0x08f81008, + 0x08f8180a, + 0x08f9a01a, + 0x08f9b042, + 0x08f9f01a, + 0x08fa0002, + 0x08fa080a, + 0x08fa1002, + 0x09a180f1, + 0x09a20002, + 0x09a238e2, + 0x0b578042, + 0x0b598062, + 0x0b7a7802, + 0x0b7a8b6a, + 0x0b7c7832, + 0x0b7f2002, + 0x0b7f801a, + 0x0de4e812, + 0x0de50031, + 0x0e7802d2, + 0x0e798162, + 0x0e8b2802, + 0x0e8b300a, + 0x0e8b3822, + 0x0e8b680a, + 0x0e8b7042, + 0x0e8b9871, + 0x0e8bd872, + 0x0e8c2862, + 0x0e8d5032, + 0x0e921022, + 0x0ed00362, + 0x0ed1db12, + 0x0ed3a802, + 0x0ed42002, + 0x0ed4d842, + 0x0ed508e2, + 0x0f000062, + 0x0f004102, + 0x0f00d862, + 0x0f011812, + 0x0f013042, + 0x0f047802, + 0x0f098062, + 0x0f157002, + 0x0f176032, + 0x0f276032, + 0x0f468062, + 0x0f4a2062, + 0x0f8007f3, + 0x0f8407f3, + 0x0f886823, + 0x0f897803, + 0x0f8b6053, + 0x0f8bf013, + 0x0f8c7003, + 0x0f8c8893, + 0x0f8d6b83, + 0x0f8f3199, + 0x0f9008e3, + 0x0f90d003, + 0x0f917803, + 0x0f919083, + 0x0f91e033, + 0x0f924ff3, + 0x0f964ff3, + 0x0f9a4ff3, + 0x0f9e4b13, + 0x0f9fd842, + 0x0fa007f3, + 0x0fa407f3, + 0x0fa803d3, + 0x0faa37f3, + 0x0fae37f3, + 0x0fb23093, + 0x0fb407f3, + 0x0fbba0b3, + 0x0fbeaaa3, + 0x0fc06033, + 0x0fc24073, + 0x0fc2d053, + 0x0fc44073, + 0x0fc57513, + 0x0fc862e3, + 0x0fc9e093, + 0x0fca3ff3, + 0x0fce3ff3, + 0x0fd23ff3, + 0x0fd63b83, + 0x0fe007f3, + 0x0fe407f3, + 0x0fe807f3, + 0x0fec07f3, + 0x0ff007f3, + 0x0ff407f3, + 0x0ff807f3, + 0x0ffc07d3, + 0x700001f1, + 0x700105f2, + 0x700407f1, + 0x700807f2, + 0x700c06f2, + 0x700f87f1, + 0x701387f1, + 0x701787f1, + 0x701b87f1, + 0x701f87f1, + 0x702387f1, + 0x702787f1, + 0x702b87f1, + 0x702f87f1, + 0x703387f1, + 0x703787f1, + 0x703b87f1, + 0x703f87f1, + 0x704387f1, + 0x704787f1, + 0x704b87f1, + 0x704f87f1, + 0x705387f1, + 0x705787f1, + 0x705b87f1, + 0x705f87f1, + 0x706387f1, + 0x706787f1, + 0x706b87f1, + 0x706f87f1, + 0x707387f1, + 0x707787f1, + 0x707b87f1, + 0x707f80f1}; + +/// Returns the extended grapheme cluster bondary property of a code point. +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __property __get_property(const char32_t __code_point) noexcept { + // The algorithm searches for the upper bound of the range and, when found, + // steps back one entry. This algorithm is used since the code point can be + // anywhere in the range. After a lower bound is found the next step is to + // compare whether the code unit is indeed in the range. + // + // Since the entry contains a code unit, size, and property the code point + // being sought needs to be adjusted. Just shifting the code point to the + // proper position doesn't work; suppose an entry has property 0, size 1, + // and lower bound 3. This results in the entry 0x1810. + // When searching for code point 3 it will search for 0x1800, find 0x1810 + // and moves to the previous entry. Thus the lower bound value will never + // be found. + // The simple solution is to set the bits belonging to the property and + // size. Then the upper bound for code point 3 will return the entry after + // 0x1810. After moving to the previous entry the algorithm arrives at the + // correct entry. + ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 11) | 0x7ffu) - __entries; + if (__i == 0) + return __property::__none; + + --__i; + uint32_t __upper_bound = (__entries[__i] >> 11) + ((__entries[__i] >> 4) & 0x7f); + if (__code_point <= __upper_bound) + return static_cast<__property>(__entries[__i] & 0xf); + + return __property::__none; +} + +} // namespace __extended_grapheme_custer_property_boundary + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H diff --git a/lib/libcxx/include/__format/format_arg.h b/lib/libcxx/include/__format/format_arg.h new file mode 100644 index 0000000..5cbfe81 --- /dev/null +++ b/lib/libcxx/include/__format/format_arg.h @@ -0,0 +1,298 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_ARG_H +#define _LIBCPP___FORMAT_FORMAT_ARG_H + +#include <__assert> +#include <__concepts/arithmetic.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_fwd.h> +#include <__format/format_parse_context.h> +#include <__functional/invoke.h> +#include <__memory/addressof.h> +#include <__type_traits/conditional.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/unreachable.h> +#include <__variant/monostate.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format { +/// The type stored in @ref basic_format_arg. +/// +/// @note The 128-bit types are unconditionally in the list to avoid the values +/// of the enums to depend on the availability of 128-bit integers. +/// +/// @note The value is stored as a 5-bit value in the __packed_arg_t_bits. This +/// limits the maximum number of elements to 32. +/// When modifying update the test +/// test/libcxx/utilities/format/format.arguments/format.arg/arg_t.compile.pass.cpp +/// It could be packed in 4-bits but that means a new type directly becomes an +/// ABI break. The packed type is 64-bit so this reduces the maximum number of +/// packed elements from 16 to 12. +/// +/// @note Some members of this enum are an extension. These extensions need +/// special behaviour in visit_format_arg. There they need to be wrapped in a +/// handle to satisfy the user observable behaviour. The internal function +/// __visit_format_arg doesn't do this wrapping. So in the format functions +/// this function is used to avoid unneeded overhead. +enum class _LIBCPP_ENUM_VIS __arg_t : uint8_t { + __none, + __boolean, + __char_type, + __int, + __long_long, + __i128, // extension + __unsigned, + __unsigned_long_long, + __u128, // extension + __float, + __double, + __long_double, + __const_char_type_ptr, + __string_view, + __ptr, + __handle +}; + +inline constexpr unsigned __packed_arg_t_bits = 5; +inline constexpr uint8_t __packed_arg_t_mask = 0x1f; + +inline constexpr unsigned __packed_types_storage_bits = 64; +inline constexpr unsigned __packed_types_max = __packed_types_storage_bits / __packed_arg_t_bits; + +_LIBCPP_HIDE_FROM_ABI +constexpr bool __use_packed_format_arg_store(size_t __size) { return __size <= __packed_types_max; } + +_LIBCPP_HIDE_FROM_ABI +constexpr __arg_t __get_packed_type(uint64_t __types, size_t __id) { + _LIBCPP_ASSERT_UNCATEGORIZED(__id <= __packed_types_max, ""); + + if (__id > 0) + __types >>= __id * __packed_arg_t_bits; + + return static_cast<__format::__arg_t>(__types & __packed_arg_t_mask); +} + +} // namespace __format + +// This function is not user obervable, so it can directly use the non-standard +// types of the "variant". See __arg_t for more details. +template +_LIBCPP_HIDE_FROM_ABI decltype(auto) +__visit_format_arg(_Visitor&& __vis, basic_format_arg<_Context> __arg) { + switch (__arg.__type_) { + case __format::__arg_t::__none: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__monostate_); + case __format::__arg_t::__boolean: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__boolean_); + case __format::__arg_t::__char_type: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__char_type_); + case __format::__arg_t::__int: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__int_); + case __format::__arg_t::__long_long: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__long_long_); + case __format::__arg_t::__i128: +# ifndef _LIBCPP_HAS_NO_INT128 + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__i128_); +# else + __libcpp_unreachable(); +# endif + case __format::__arg_t::__unsigned: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__unsigned_); + case __format::__arg_t::__unsigned_long_long: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__unsigned_long_long_); + case __format::__arg_t::__u128: +# ifndef _LIBCPP_HAS_NO_INT128 + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__u128_); +# else + __libcpp_unreachable(); +# endif + case __format::__arg_t::__float: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__float_); + case __format::__arg_t::__double: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__double_); + case __format::__arg_t::__long_double: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__long_double_); + case __format::__arg_t::__const_char_type_ptr: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__const_char_type_ptr_); + case __format::__arg_t::__string_view: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__string_view_); + case __format::__arg_t::__ptr: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), __arg.__value_.__ptr_); + case __format::__arg_t::__handle: + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), + typename basic_format_arg<_Context>::handle{__arg.__value_.__handle_}); + } + + __libcpp_unreachable(); +} + +/// Contains the values used in basic_format_arg. +/// +/// This is a separate type so it's possible to store the values and types in +/// separate arrays. +template +class __basic_format_arg_value { + using _CharT = typename _Context::char_type; + +public: + /// Contains the implementation for basic_format_arg::handle. + struct __handle { + template + _LIBCPP_HIDE_FROM_ABI explicit __handle(_Tp& __v) noexcept + : __ptr_(_VSTD::addressof(__v)), + __format_([](basic_format_parse_context<_CharT>& __parse_ctx, _Context& __ctx, const void* __ptr) { + using _Dp = remove_const_t<_Tp>; + using _Qp = conditional_t<__formattable_with, const _Dp, _Dp>; + static_assert(__formattable_with<_Qp, _Context>, "Mandated by [format.arg]/10"); + + typename _Context::template formatter_type<_Dp> __f; + __parse_ctx.advance_to(__f.parse(__parse_ctx)); + __ctx.advance_to(__f.format(*const_cast<_Qp*>(static_cast(__ptr)), __ctx)); + }) {} + + const void* __ptr_; + void (*__format_)(basic_format_parse_context<_CharT>&, _Context&, const void*); + }; + + union { + monostate __monostate_; + bool __boolean_; + _CharT __char_type_; + int __int_; + unsigned __unsigned_; + long long __long_long_; + unsigned long long __unsigned_long_long_; +# ifndef _LIBCPP_HAS_NO_INT128 + __int128_t __i128_; + __uint128_t __u128_; +# endif + float __float_; + double __double_; + long double __long_double_; + const _CharT* __const_char_type_ptr_; + basic_string_view<_CharT> __string_view_; + const void* __ptr_; + __handle __handle_; + }; + + // These constructors contain the exact storage type used. If adjustments are + // required, these will be done in __create_format_arg. + + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value() noexcept : __monostate_() {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(bool __value) noexcept : __boolean_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(_CharT __value) noexcept : __char_type_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(int __value) noexcept : __int_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(unsigned __value) noexcept : __unsigned_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(long long __value) noexcept : __long_long_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(unsigned long long __value) noexcept + : __unsigned_long_long_(__value) {} +# ifndef _LIBCPP_HAS_NO_INT128 + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(__int128_t __value) noexcept : __i128_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(__uint128_t __value) noexcept : __u128_(__value) {} +# endif + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(float __value) noexcept : __float_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(double __value) noexcept : __double_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(long double __value) noexcept : __long_double_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(const _CharT* __value) noexcept : __const_char_type_ptr_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(basic_string_view<_CharT> __value) noexcept + : __string_view_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(const void* __value) noexcept : __ptr_(__value) {} + _LIBCPP_HIDE_FROM_ABI __basic_format_arg_value(__handle&& __value) noexcept : __handle_(std::move(__value)) {} +}; + +template +class _LIBCPP_TEMPLATE_VIS basic_format_arg { +public: + class _LIBCPP_TEMPLATE_VIS handle; + + _LIBCPP_HIDE_FROM_ABI basic_format_arg() noexcept + : __type_{__format::__arg_t::__none} {} + + _LIBCPP_HIDE_FROM_ABI explicit operator bool() const noexcept { + return __type_ != __format::__arg_t::__none; + } + +private: + using char_type = typename _Context::char_type; + + // TODO FMT Implement constrain [format.arg]/4 + // Constraints: The template specialization + // typename Context::template formatter_type + // meets the Formatter requirements ([formatter.requirements]). The extent + // to which an implementation determines that the specialization meets the + // Formatter requirements is unspecified, except that as a minimum the + // expression + // typename Context::template formatter_type() + // .format(declval(), declval()) + // shall be well-formed when treated as an unevaluated operand. + +public: + __basic_format_arg_value<_Context> __value_; + __format::__arg_t __type_; + + _LIBCPP_HIDE_FROM_ABI explicit basic_format_arg(__format::__arg_t __type, + __basic_format_arg_value<_Context> __value) noexcept + : __value_(__value), __type_(__type) {} +}; + +template +class _LIBCPP_TEMPLATE_VIS basic_format_arg<_Context>::handle { +public: + _LIBCPP_HIDE_FROM_ABI + void format(basic_format_parse_context& __parse_ctx, _Context& __ctx) const { + __handle_.__format_(__parse_ctx, __ctx, __handle_.__ptr_); + } + + _LIBCPP_HIDE_FROM_ABI explicit handle(typename __basic_format_arg_value<_Context>::__handle& __handle) noexcept + : __handle_(__handle) {} + +private: + typename __basic_format_arg_value<_Context>::__handle& __handle_; +}; + +// This function is user facing, so it must wrap the non-standard types of +// the "variant" in a handle to stay conforming. See __arg_t for more details. +template +_LIBCPP_HIDE_FROM_ABI decltype(auto) +visit_format_arg(_Visitor&& __vis, basic_format_arg<_Context> __arg) { + switch (__arg.__type_) { +# ifndef _LIBCPP_HAS_NO_INT128 + case __format::__arg_t::__i128: { + typename __basic_format_arg_value<_Context>::__handle __h{__arg.__value_.__i128_}; + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), typename basic_format_arg<_Context>::handle{__h}); + } + + case __format::__arg_t::__u128: { + typename __basic_format_arg_value<_Context>::__handle __h{__arg.__value_.__u128_}; + return _VSTD::invoke(_VSTD::forward<_Visitor>(__vis), typename basic_format_arg<_Context>::handle{__h}); + } +# endif + default: + return _VSTD::__visit_format_arg(_VSTD::forward<_Visitor>(__vis), __arg); + } +} + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_ARG_H diff --git a/lib/libcxx/include/__format/format_arg_store.h b/lib/libcxx/include/__format/format_arg_store.h new file mode 100644 index 0000000..15ec8eb --- /dev/null +++ b/lib/libcxx/include/__format/format_arg_store.h @@ -0,0 +1,263 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_ARG_STORE_H +#define _LIBCPP___FORMAT_FORMAT_ARG_STORE_H + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#include <__concepts/arithmetic.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_arg.h> +#include <__type_traits/conditional.h> +#include <__type_traits/extent.h> +#include <__type_traits/remove_const.h> +#include +#include + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format { + +/// \returns The @c __arg_t based on the type of the formatting argument. +/// +/// \pre \c __formattable<_Tp, typename _Context::char_type> +template +consteval __arg_t __determine_arg_t(); + +// Boolean +template _Tp> +consteval __arg_t __determine_arg_t() { + return __arg_t::__boolean; +} + +// Char +template _Tp> +consteval __arg_t __determine_arg_t() { + return __arg_t::__char_type; +} +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template + requires(same_as && same_as<_CharT, char>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__char_type; +} +# endif + +// Signed integers +template +consteval __arg_t __determine_arg_t() { + if constexpr (sizeof(_Tp) <= sizeof(int)) + return __arg_t::__int; + else if constexpr (sizeof(_Tp) <= sizeof(long long)) + return __arg_t::__long_long; +# ifndef _LIBCPP_HAS_NO_INT128 + else if constexpr (sizeof(_Tp) == sizeof(__int128_t)) + return __arg_t::__i128; +# endif + else + static_assert(sizeof(_Tp) == 0, "an unsupported signed integer was used"); +} + +// Unsigned integers +template +consteval __arg_t __determine_arg_t() { + if constexpr (sizeof(_Tp) <= sizeof(unsigned)) + return __arg_t::__unsigned; + else if constexpr (sizeof(_Tp) <= sizeof(unsigned long long)) + return __arg_t::__unsigned_long_long; +# ifndef _LIBCPP_HAS_NO_INT128 + else if constexpr (sizeof(_Tp) == sizeof(__uint128_t)) + return __arg_t::__u128; +# endif + else + static_assert(sizeof(_Tp) == 0, "an unsupported unsigned integer was used"); +} + +// Floating-point +template _Tp> +consteval __arg_t __determine_arg_t() { + return __arg_t::__float; +} +template _Tp> +consteval __arg_t __determine_arg_t() { + return __arg_t::__double; +} +template _Tp> +consteval __arg_t __determine_arg_t() { + return __arg_t::__long_double; +} + +// Char pointer +template + requires(same_as || same_as) +consteval __arg_t __determine_arg_t() { + return __arg_t::__const_char_type_ptr; +} + +// Char array +template + requires(is_array_v<_Tp> && same_as<_Tp, typename _Context::char_type[extent_v<_Tp>]>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__string_view; +} + +// String view +template + requires(same_as && + same_as<_Tp, basic_string_view>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__string_view; +} + +// String +template + requires( + same_as && + same_as<_Tp, basic_string>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__string_view; +} + +// Pointers +template + requires(same_as<_Ptr, void*> || same_as<_Ptr, const void*> || same_as<_Ptr, nullptr_t>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__ptr; +} + +// Handle +// +// Note this version can't be constrained avoiding ambiguous overloads. +// That means it can be instantiated by disabled formatters. To solve this, a +// constrained version for not formattable formatters is added. +template +consteval __arg_t __determine_arg_t() { + return __arg_t::__handle; +} + +// The overload for not formattable types allows triggering the static +// assertion below. +template + requires(!__formattable<_Tp, typename _Context::char_type>) +consteval __arg_t __determine_arg_t() { + return __arg_t::__none; +} + +// Pseudo constuctor for basic_format_arg +// +// Modeled after template explicit basic_format_arg(T& v) noexcept; +// [format.arg]/4-6 +template +_LIBCPP_HIDE_FROM_ABI basic_format_arg<_Context> __create_format_arg(_Tp& __value) noexcept { + using _Dp = remove_const_t<_Tp>; + constexpr __arg_t __arg = __determine_arg_t<_Context, _Dp>(); + static_assert(__arg != __arg_t::__none, "the supplied type is not formattable"); + + static_assert(__formattable_with<_Tp, _Context>); + + // Not all types can be used to directly initialize the + // __basic_format_arg_value. First handle all types needing adjustment, the + // final else requires no adjustment. + if constexpr (__arg == __arg_t::__char_type) + // On some platforms initializing a wchar_t from a char is a narrowing + // conversion. + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__int) + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__long_long) + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__unsigned) + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__unsigned_long_long) + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__string_view) + // Using std::size on a character array will add the NUL-terminator to the size. + if constexpr (is_array_v<_Dp>) + return basic_format_arg<_Context>{ + __arg, basic_string_view{__value, extent_v<_Dp> - 1}}; + else + // When the _Traits or _Allocator are different an implicit conversion will + // fail. + return basic_format_arg<_Context>{ + __arg, basic_string_view{__value.data(), __value.size()}}; + else if constexpr (__arg == __arg_t::__ptr) + return basic_format_arg<_Context>{__arg, static_cast(__value)}; + else if constexpr (__arg == __arg_t::__handle) + return basic_format_arg<_Context>{__arg, typename __basic_format_arg_value<_Context>::__handle{__value}}; + else + return basic_format_arg<_Context>{__arg, __value}; +} + +template +_LIBCPP_HIDE_FROM_ABI void __create_packed_storage(uint64_t& __types, __basic_format_arg_value<_Context>* __values, + _Args&&... __args) noexcept { + int __shift = 0; + ( + [&] { + basic_format_arg<_Context> __arg = __format::__create_format_arg<_Context>(__args); + if (__shift != 0) + __types |= static_cast(__arg.__type_) << __shift; + else + // Assigns the initial value. + __types = static_cast(__arg.__type_); + __shift += __packed_arg_t_bits; + *__values++ = __arg.__value_; + }(), + ...); +} + +template +_LIBCPP_HIDE_FROM_ABI void __store_basic_format_arg(basic_format_arg<_Context>* __data, _Args&&... __args) noexcept { + ([&] { *__data++ = __format::__create_format_arg<_Context>(__args); }(), ...); +} + +template +struct __packed_format_arg_store { + __basic_format_arg_value<_Context> __values_[N]; + uint64_t __types_ = 0; +}; + +template +struct __unpacked_format_arg_store { + basic_format_arg<_Context> __args_[N]; +}; + +} // namespace __format + +template +struct _LIBCPP_TEMPLATE_VIS __format_arg_store { + _LIBCPP_HIDE_FROM_ABI + __format_arg_store(_Args&... __args) noexcept { + if constexpr (sizeof...(_Args) != 0) { + if constexpr (__format::__use_packed_format_arg_store(sizeof...(_Args))) + __format::__create_packed_storage(__storage.__types_, __storage.__values_, __args...); + else + __format::__store_basic_format_arg<_Context>(__storage.__args_, __args...); + } + } + + using _Storage = conditional_t<__format::__use_packed_format_arg_store(sizeof...(_Args)), + __format::__packed_format_arg_store<_Context, sizeof...(_Args)>, + __format::__unpacked_format_arg_store<_Context, sizeof...(_Args)>>; + + _Storage __storage; +}; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_ARG_STORE_H diff --git a/lib/libcxx/include/__format/format_args.h b/lib/libcxx/include/__format/format_args.h new file mode 100644 index 0000000..defb42a --- /dev/null +++ b/lib/libcxx/include/__format/format_args.h @@ -0,0 +1,82 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_ARGS_H +#define _LIBCPP___FORMAT_FORMAT_ARGS_H + +#include <__availability> +#include <__config> +#include <__format/format_arg.h> +#include <__format/format_arg_store.h> +#include <__format/format_fwd.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +class _LIBCPP_TEMPLATE_VIS basic_format_args { +public: + basic_format_args() noexcept = default; + + template + _LIBCPP_HIDE_FROM_ABI basic_format_args(const __format_arg_store<_Context, _Args...>& __store) noexcept + : __size_(sizeof...(_Args)) { + if constexpr (sizeof...(_Args) != 0) { + if constexpr (__format::__use_packed_format_arg_store(sizeof...(_Args))) { + __values_ = __store.__storage.__values_; + __types_ = __store.__storage.__types_; + } else + __args_ = __store.__storage.__args_; + } + } + + _LIBCPP_HIDE_FROM_ABI + basic_format_arg<_Context> get(size_t __id) const noexcept { + if (__id >= __size_) + return basic_format_arg<_Context>{}; + + if (__format::__use_packed_format_arg_store(__size_)) + return basic_format_arg<_Context>{__format::__get_packed_type(__types_, __id), __values_[__id]}; + + return __args_[__id]; + } + + _LIBCPP_HIDE_FROM_ABI size_t __size() const noexcept { return __size_; } + +private: + size_t __size_{0}; + // [format.args]/5 + // [Note 1: Implementations are encouraged to optimize the representation of + // basic_format_args for small number of formatting arguments by storing + // indices of type alternatives separately from values and packing the + // former. - end note] + union { + struct { + const __basic_format_arg_value<_Context>* __values_; + uint64_t __types_; + }; + const basic_format_arg<_Context>* __args_; + }; +}; + +template +basic_format_args(__format_arg_store<_Context, _Args...>) -> basic_format_args<_Context>; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_ARGS_H diff --git a/lib/libcxx/include/__format/format_context.h b/lib/libcxx/include/__format/format_context.h new file mode 100644 index 0000000..9d50cee --- /dev/null +++ b/lib/libcxx/include/__format/format_context.h @@ -0,0 +1,222 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_CONTEXT_H +#define _LIBCPP___FORMAT_FORMAT_CONTEXT_H + +#include <__availability> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/buffer.h> +#include <__format/format_arg.h> +#include <__format/format_arg_store.h> +#include <__format/format_args.h> +#include <__format/format_error.h> +#include <__format/format_fwd.h> +#include <__iterator/back_insert_iterator.h> +#include <__iterator/concepts.h> +#include <__memory/addressof.h> +#include <__utility/move.h> +#include <__variant/monostate.h> +#include + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +#include +#include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +requires output_iterator<_OutIt, const _CharT&> +class _LIBCPP_TEMPLATE_VIS basic_format_context; + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +/** + * Helper to create a basic_format_context. + * + * This is needed since the constructor is private. + */ +template +_LIBCPP_HIDE_FROM_ABI basic_format_context<_OutIt, _CharT> +__format_context_create( + _OutIt __out_it, + basic_format_args> __args, + optional<_VSTD::locale>&& __loc = nullopt) { + return _VSTD::basic_format_context(_VSTD::move(__out_it), __args, _VSTD::move(__loc)); +} +#else +template +_LIBCPP_HIDE_FROM_ABI basic_format_context<_OutIt, _CharT> +__format_context_create( + _OutIt __out_it, + basic_format_args> __args) { + return _VSTD::basic_format_context(_VSTD::move(__out_it), __args); +} +#endif + +using format_context = + basic_format_context>, + char>; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wformat_context = basic_format_context< + back_insert_iterator<__format::__output_buffer>, wchar_t>; +#endif + +template +requires output_iterator<_OutIt, const _CharT&> +class + // clang-format off + _LIBCPP_TEMPLATE_VIS + _LIBCPP_PREFERRED_NAME(format_context) + _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wformat_context)) + // clang-format on + basic_format_context { +public: + using iterator = _OutIt; + using char_type = _CharT; + template + using formatter_type = formatter<_Tp, _CharT>; + + _LIBCPP_HIDE_FROM_ABI basic_format_arg + arg(size_t __id) const noexcept { + return __args_.get(__id); + } +#ifndef _LIBCPP_HAS_NO_LOCALIZATION + _LIBCPP_HIDE_FROM_ABI _VSTD::locale locale() { + if (!__loc_) + __loc_ = _VSTD::locale{}; + return *__loc_; + } +#endif + _LIBCPP_HIDE_FROM_ABI iterator out() { return std::move(__out_it_); } + _LIBCPP_HIDE_FROM_ABI void advance_to(iterator __it) { __out_it_ = std::move(__it); } + +private: + iterator __out_it_; + basic_format_args __args_; +#ifndef _LIBCPP_HAS_NO_LOCALIZATION + + // The Standard doesn't specify how the locale is stored. + // [format.context]/6 + // std::locale locale(); + // Returns: The locale passed to the formatting function if the latter + // takes one, and std::locale() otherwise. + // This is done by storing the locale of the constructor in this optional. If + // locale() is called and the optional has no value the value will be created. + // This allows the implementation to lazily create the locale. + // TODO FMT Validate whether lazy creation is the best solution. + optional<_VSTD::locale> __loc_; + + template + friend _LIBCPP_HIDE_FROM_ABI basic_format_context<_OtherOutIt, _OtherCharT> + __format_context_create(_OtherOutIt, basic_format_args>, + optional<_VSTD::locale>&&); + + // Note: the Standard doesn't specify the required constructors. + _LIBCPP_HIDE_FROM_ABI + explicit basic_format_context(_OutIt __out_it, + basic_format_args __args, + optional<_VSTD::locale>&& __loc) + : __out_it_(_VSTD::move(__out_it)), __args_(__args), + __loc_(_VSTD::move(__loc)) {} +#else + template + friend _LIBCPP_HIDE_FROM_ABI basic_format_context<_OtherOutIt, _OtherCharT> + __format_context_create(_OtherOutIt, basic_format_args>); + + _LIBCPP_HIDE_FROM_ABI + explicit basic_format_context(_OutIt __out_it, + basic_format_args __args) + : __out_it_(_VSTD::move(__out_it)), __args_(__args) {} +#endif +}; + +// A specialization for __retarget_buffer +// +// See __retarget_buffer for the motivation for this specialization. +// +// This context holds a reference to the instance of the basic_format_context +// that is retargeted. It converts a formatting argument when it is requested +// during formatting. It is expected that the usage of the arguments is rare so +// the lookups are not expected to be used often. An alternative would be to +// convert all elements during construction. +// +// The elements of the retargets context are only used when an underlying +// formatter uses a locale specific formatting or an formatting argument is +// part for the format spec. For example +// format("{:256:{}}", input, 8); +// Here the width of an element in input is determined dynamically. +// Note when the top-level element has no width the retargeting is not needed. +template +class _LIBCPP_TEMPLATE_VIS + basic_format_context::__iterator, _CharT> { +public: + using iterator = typename __format::__retarget_buffer<_CharT>::__iterator; + using char_type = _CharT; + template + using formatter_type = formatter<_Tp, _CharT>; + + template + _LIBCPP_HIDE_FROM_ABI explicit basic_format_context(iterator __out_it, _Context& __ctx) + : __out_it_(std::move(__out_it)), +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + __loc_([](void* __c) { return static_cast<_Context*>(__c)->locale(); }), +# endif + __ctx_(std::addressof(__ctx)), + __arg_([](void* __c, size_t __id) { + return std::visit_format_arg( + [&](auto __arg) -> basic_format_arg { + if constexpr (same_as) + return {}; + else if constexpr (same_as::handle>) + // At the moment it's not possible for formatting to use a re-targeted handle. + // TODO FMT add this when support is needed. + std::__throw_format_error("Re-targeting handle not supported"); + else + return basic_format_arg{ + __format::__determine_arg_t(), + __basic_format_arg_value(__arg)}; + }, + static_cast<_Context*>(__c)->arg(__id)); + }) { + } + + _LIBCPP_HIDE_FROM_ABI basic_format_arg arg(size_t __id) const noexcept { + return __arg_(__ctx_, __id); + } +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + _LIBCPP_HIDE_FROM_ABI _VSTD::locale locale() { return __loc_(__ctx_); } +# endif + _LIBCPP_HIDE_FROM_ABI iterator out() { return std::move(__out_it_); } + _LIBCPP_HIDE_FROM_ABI void advance_to(iterator __it) { __out_it_ = std::move(__it); } + +private: + iterator __out_it_; + +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + std::locale (*__loc_)(void* __ctx); +# endif + + void* __ctx_; + basic_format_arg (*__arg_)(void* __ctx, size_t __id); +}; + +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(basic_format_context); +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_CONTEXT_H diff --git a/lib/libcxx/include/__format/format_error.h b/lib/libcxx/include/__format/format_error.h new file mode 100644 index 0000000..f22cb0b --- /dev/null +++ b/lib/libcxx/include/__format/format_error.h @@ -0,0 +1,51 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_ERROR_H +#define _LIBCPP___FORMAT_FORMAT_ERROR_H + +#include <__config> +#include <__verbose_abort> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_DIAGNOSTIC_PUSH +_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wweak-vtables") +class _LIBCPP_EXPORTED_FROM_ABI format_error : public runtime_error { +public: + _LIBCPP_HIDE_FROM_ABI explicit format_error(const string& __s) + : runtime_error(__s) {} + _LIBCPP_HIDE_FROM_ABI explicit format_error(const char* __s) + : runtime_error(__s) {} + _LIBCPP_HIDE_FROM_ABI_VIRTUAL + ~format_error() noexcept override = default; +}; +_LIBCPP_DIAGNOSTIC_POP + +_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI void +__throw_format_error(const char* __s) { +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + throw format_error(__s); +#else + _LIBCPP_VERBOSE_ABORT("format_error was thrown in -fno-exceptions mode with message \"%s\"", __s); +#endif +} + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_ERROR_H diff --git a/lib/libcxx/include/__format/format_functions.h b/lib/libcxx/include/__format/format_functions.h new file mode 100644 index 0000000..bb62c1c --- /dev/null +++ b/lib/libcxx/include/__format/format_functions.h @@ -0,0 +1,662 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_FUNCTIONS +#define _LIBCPP___FORMAT_FORMAT_FUNCTIONS + +#include <__algorithm/clamp.h> +#include <__concepts/convertible_to.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/buffer.h> +#include <__format/format_arg.h> +#include <__format/format_arg_store.h> +#include <__format/format_args.h> +#include <__format/format_context.h> +#include <__format/format_error.h> +#include <__format/format_parse_context.h> +#include <__format/format_string.h> +#include <__format/format_to_n_result.h> +#include <__format/formatter.h> +#include <__format/formatter_bool.h> +#include <__format/formatter_char.h> +#include <__format/formatter_floating_point.h> +#include <__format/formatter_integer.h> +#include <__format/formatter_pointer.h> +#include <__format/formatter_string.h> +#include <__format/parser_std_format_spec.h> +#include <__iterator/back_insert_iterator.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> // iter_value_t +#include <__variant/monostate.h> +#include +#include +#include + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +#include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// TODO FMT Evaluate which templates should be external templates. This +// improves the efficiency of the header. However since the header is still +// under heavy development and not all classes are stable it makes no sense +// to do this optimization now. + +using format_args = basic_format_args; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wformat_args = basic_format_args; +#endif + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI __format_arg_store<_Context, _Args...> make_format_args(_Args&&... __args) { + return _VSTD::__format_arg_store<_Context, _Args...>(__args...); +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI __format_arg_store +make_wformat_args(_Args&&... __args) { + return _VSTD::__format_arg_store(__args...); +} +# endif + +namespace __format { + +/// Helper class parse and handle argument. +/// +/// When parsing a handle which is not enabled the code is ill-formed. +/// This helper uses the parser of the appropriate formatter for the stored type. +template +class _LIBCPP_TEMPLATE_VIS __compile_time_handle { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr void __parse(_ParseContext& __ctx) const { + __parse_(__ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr void __enable() { + __parse_ = [](basic_format_parse_context<_CharT>& __ctx) { + formatter<_Tp, _CharT> __f; + __ctx.advance_to(__f.parse(__ctx)); + }; + } + + // Before calling __parse the proper handler needs to be set with __enable. + // The default handler isn't a core constant expression. + _LIBCPP_HIDE_FROM_ABI constexpr __compile_time_handle() + : __parse_([](basic_format_parse_context<_CharT>&) { std::__throw_format_error("Not a handle"); }) {} + +private: + void (*__parse_)(basic_format_parse_context<_CharT>&); +}; + +// Dummy format_context only providing the parts used during constant +// validation of the basic_format_string. +template +struct _LIBCPP_TEMPLATE_VIS __compile_time_basic_format_context { +public: + using char_type = _CharT; + + _LIBCPP_HIDE_FROM_ABI constexpr explicit __compile_time_basic_format_context( + const __arg_t* __args, const __compile_time_handle<_CharT>* __handles, size_t __size) + : __args_(__args), __handles_(__handles), __size_(__size) {} + + // During the compile-time validation nothing needs to be written. + // Therefore all operations of this iterator are a NOP. + struct iterator { + _LIBCPP_HIDE_FROM_ABI constexpr iterator& operator=(_CharT) { return *this; } + _LIBCPP_HIDE_FROM_ABI constexpr iterator& operator*() { return *this; } + _LIBCPP_HIDE_FROM_ABI constexpr iterator operator++(int) { return *this; } + }; + + _LIBCPP_HIDE_FROM_ABI constexpr __arg_t arg(size_t __id) const { + if (__id >= __size_) + std::__throw_format_error("The argument index value is too large for the number of arguments supplied"); + return __args_[__id]; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const __compile_time_handle<_CharT>& __handle(size_t __id) const { + if (__id >= __size_) + std::__throw_format_error("The argument index value is too large for the number of arguments supplied"); + return __handles_[__id]; + } + + _LIBCPP_HIDE_FROM_ABI constexpr iterator out() { return {}; } + _LIBCPP_HIDE_FROM_ABI constexpr void advance_to(iterator) {} + +private: + const __arg_t* __args_; + const __compile_time_handle<_CharT>* __handles_; + size_t __size_; +}; + +// [format.string.std]/8 +// If { arg-idopt } is used in a width or precision, the value of the +// corresponding formatting argument is used in its place. If the +// corresponding formatting argument is not of standard signed or unsigned +// integer type, or its value is negative for precision or non-positive for +// width, an exception of type format_error is thrown. +// +// _HasPrecision does the formatter have a precision? +template +_LIBCPP_HIDE_FROM_ABI constexpr void __compile_time_validate_argument( + basic_format_parse_context<_CharT>& __parse_ctx, __compile_time_basic_format_context<_CharT>& __ctx) { + auto __validate_type = [](__arg_t __type) { + // LWG3720 originally allowed "signed or unsigned integer types", however + // the final version explicitly changed it to "*standard* signed or unsigned + // integer types". It's trivial to use 128-bit integrals in libc++'s + // implementation, but other implementations may not implement it. + // (Using a width or precision, that does not fit in 64-bits, sounds very + // unlikely in real world code.) + switch (__type) { + case __arg_t::__int: + case __arg_t::__long_long: + case __arg_t::__unsigned: + case __arg_t::__unsigned_long_long: + return; + + default: + std::__throw_format_error("Replacement argument isn't a standard signed or unsigned integer type"); + } + }; + + formatter<_Tp, _CharT> __formatter; + __parse_ctx.advance_to(__formatter.parse(__parse_ctx)); + if (__formatter.__parser_.__width_as_arg_) + __validate_type(__ctx.arg(__formatter.__parser_.__width_)); + + if constexpr (_HasPrecision) + if (__formatter.__parser_.__precision_as_arg_) + __validate_type(__ctx.arg(__formatter.__parser_.__precision_)); +} + +// This function is not user facing, so it can directly use the non-standard types of the "variant". +template +_LIBCPP_HIDE_FROM_ABI constexpr void __compile_time_visit_format_arg(basic_format_parse_context<_CharT>& __parse_ctx, + __compile_time_basic_format_context<_CharT>& __ctx, + __arg_t __type) { + switch (__type) { + case __arg_t::__none: + std::__throw_format_error("Invalid argument"); + case __arg_t::__boolean: + return __format::__compile_time_validate_argument<_CharT, bool>(__parse_ctx, __ctx); + case __arg_t::__char_type: + return __format::__compile_time_validate_argument<_CharT, _CharT>(__parse_ctx, __ctx); + case __arg_t::__int: + return __format::__compile_time_validate_argument<_CharT, int>(__parse_ctx, __ctx); + case __arg_t::__long_long: + return __format::__compile_time_validate_argument<_CharT, long long>(__parse_ctx, __ctx); + case __arg_t::__i128: +# ifndef _LIBCPP_HAS_NO_INT128 + return __format::__compile_time_validate_argument<_CharT, __int128_t>(__parse_ctx, __ctx); +# else + std::__throw_format_error("Invalid argument"); +# endif + return; + case __arg_t::__unsigned: + return __format::__compile_time_validate_argument<_CharT, unsigned>(__parse_ctx, __ctx); + case __arg_t::__unsigned_long_long: + return __format::__compile_time_validate_argument<_CharT, unsigned long long>(__parse_ctx, __ctx); + case __arg_t::__u128: +# ifndef _LIBCPP_HAS_NO_INT128 + return __format::__compile_time_validate_argument<_CharT, __uint128_t>(__parse_ctx, __ctx); +# else + std::__throw_format_error("Invalid argument"); +# endif + return; + case __arg_t::__float: + return __format::__compile_time_validate_argument<_CharT, float, true>(__parse_ctx, __ctx); + case __arg_t::__double: + return __format::__compile_time_validate_argument<_CharT, double, true>(__parse_ctx, __ctx); + case __arg_t::__long_double: + return __format::__compile_time_validate_argument<_CharT, long double, true>(__parse_ctx, __ctx); + case __arg_t::__const_char_type_ptr: + return __format::__compile_time_validate_argument<_CharT, const _CharT*, true>(__parse_ctx, __ctx); + case __arg_t::__string_view: + return __format::__compile_time_validate_argument<_CharT, basic_string_view<_CharT>, true>(__parse_ctx, __ctx); + case __arg_t::__ptr: + return __format::__compile_time_validate_argument<_CharT, const void*>(__parse_ctx, __ctx); + case __arg_t::__handle: + std::__throw_format_error("Handle should use __compile_time_validate_handle_argument"); + } + std::__throw_format_error("Invalid argument"); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr _Iterator +__handle_replacement_field(_Iterator __begin, _Iterator __end, + _ParseCtx& __parse_ctx, _Ctx& __ctx) { + using _CharT = iter_value_t<_Iterator>; + __format::__parse_number_result __r = __format::__parse_arg_id(__begin, __end, __parse_ctx); + + if (__r.__last == __end) + std::__throw_format_error("The argument index should end with a ':' or a '}'"); + + bool __parse = *__r.__last == _CharT(':'); + switch (*__r.__last) { + case _CharT(':'): + // The arg-id has a format-specifier, advance the input to the format-spec. + __parse_ctx.advance_to(__r.__last + 1); + break; + case _CharT('}'): + // The arg-id has no format-specifier. + __parse_ctx.advance_to(__r.__last); + break; + default: + std::__throw_format_error("The argument index should end with a ':' or a '}'"); + } + + if constexpr (same_as<_Ctx, __compile_time_basic_format_context<_CharT>>) { + __arg_t __type = __ctx.arg(__r.__value); + if (__type == __arg_t::__none) + std::__throw_format_error("The argument index value is too large for the number of arguments supplied"); + else if (__type == __arg_t::__handle) + __ctx.__handle(__r.__value).__parse(__parse_ctx); + else if (__parse) + __format::__compile_time_visit_format_arg(__parse_ctx, __ctx, __type); + } else + _VSTD::__visit_format_arg( + [&](auto __arg) { + if constexpr (same_as) + std::__throw_format_error("The argument index value is too large for the number of arguments supplied"); + else if constexpr (same_as::handle>) + __arg.format(__parse_ctx, __ctx); + else { + formatter __formatter; + if (__parse) + __parse_ctx.advance_to(__formatter.parse(__parse_ctx)); + __ctx.advance_to(__formatter.format(__arg, __ctx)); + } + }, + __ctx.arg(__r.__value)); + + __begin = __parse_ctx.begin(); + if (__begin == __end || *__begin != _CharT('}')) + std::__throw_format_error("The replacement field misses a terminating '}'"); + + return ++__begin; +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr typename _Ctx::iterator +__vformat_to(_ParseCtx&& __parse_ctx, _Ctx&& __ctx) { + using _CharT = typename _ParseCtx::char_type; + static_assert(same_as); + + auto __begin = __parse_ctx.begin(); + auto __end = __parse_ctx.end(); + typename _Ctx::iterator __out_it = __ctx.out(); + while (__begin != __end) { + switch (*__begin) { + case _CharT('{'): + ++__begin; + if (__begin == __end) + std::__throw_format_error("The format string terminates at a '{'"); + + if (*__begin != _CharT('{')) [[likely]] { + __ctx.advance_to(_VSTD::move(__out_it)); + __begin = + __format::__handle_replacement_field(__begin, __end, __parse_ctx, __ctx); + __out_it = __ctx.out(); + + // The output is written and __begin points to the next character. So + // start the next iteration. + continue; + } + // The string is an escape character. + break; + + case _CharT('}'): + ++__begin; + if (__begin == __end || *__begin != _CharT('}')) + std::__throw_format_error("The format string contains an invalid escape sequence"); + + break; + } + + // Copy the character to the output verbatim. + *__out_it++ = *__begin++; + } + return __out_it; +} + +} // namespace __format + +template +struct _LIBCPP_TEMPLATE_VIS basic_format_string { + template + requires convertible_to> + consteval basic_format_string(const _Tp& __str) : __str_{__str} { + __format::__vformat_to(basic_format_parse_context<_CharT>{__str_, sizeof...(_Args)}, + _Context{__types_.data(), __handles_.data(), sizeof...(_Args)}); + } + + _LIBCPP_HIDE_FROM_ABI constexpr basic_string_view<_CharT> get() const noexcept { + return __str_; + } + +private: + basic_string_view<_CharT> __str_; + + using _Context = __format::__compile_time_basic_format_context<_CharT>; + + static constexpr array<__format::__arg_t, sizeof...(_Args)> __types_{ + __format::__determine_arg_t<_Context, remove_cvref_t<_Args>>()...}; + + static constexpr array<__format::__compile_time_handle<_CharT>, sizeof...(_Args)> __handles_{[] { + using _Tp = remove_cvref_t<_Args>; + __format::__compile_time_handle<_CharT> __handle; + if (__format::__determine_arg_t<_Context, _Tp>() == __format::__arg_t::__handle) + __handle.template __enable<_Tp>(); + + return __handle; + }()...}; +}; + +template +using format_string = basic_format_string...>; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +using wformat_string = basic_format_string...>; +#endif + +template +requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt + __vformat_to( + _OutIt __out_it, basic_string_view<_CharT> __fmt, + basic_format_args> __args) { + if constexpr (same_as<_OutIt, _FormatOutIt>) + return _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(_VSTD::move(__out_it), __args)); + else { + __format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)}; + _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args)); + return _VSTD::move(__buffer).__out_it(); + } +} + +// The function is _LIBCPP_ALWAYS_INLINE since the compiler is bad at inlining +// https://reviews.llvm.org/D110499#inline-1180704 +// TODO FMT Evaluate whether we want to file a Clang bug report regarding this. +template _OutIt> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +vformat_to(_OutIt __out_it, string_view __fmt, format_args __args) { + return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +vformat_to(_OutIt __out_it, wstring_view __fmt, wformat_args __args) { + return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args); +} +#endif + +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +format_to(_OutIt __out_it, format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.get(), + _VSTD::make_format_args(__args...)); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +format_to(_OutIt __out_it, wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.get(), + _VSTD::make_wformat_args(__args...)); +} +#endif + +// TODO FMT This needs to be a template or std::to_chars(floating-point) availability markup +// fires too eagerly, see http://llvm.org/PR61563. +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI string +vformat(string_view __fmt, format_args __args) { + string __res; + _VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args); + return __res; +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +// TODO FMT This needs to be a template or std::to_chars(floating-point) availability markup +// fires too eagerly, see http://llvm.org/PR61563. +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI wstring +vformat(wstring_view __fmt, wformat_args __args) { + wstring __res; + _VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args); + return __res; +} +# endif + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI string +format(format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(__fmt.get(), _VSTD::make_format_args(__args...)); +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI wstring +format(wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(__fmt.get(), _VSTD::make_wformat_args(__args...)); +} +# endif + +template +_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, + basic_string_view<_CharT> __fmt, + basic_format_args<_Context> __args) { + __format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n}; + _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args)); + return _VSTD::move(__buffer).__result(); +} + +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> +format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformat_to_n(_VSTD::move(__out_it), __n, __fmt.get(), _VSTD::make_format_args(__args...)); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt, class... _Args> +_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> +format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, wformat_string<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n(_VSTD::move(__out_it), __n, __fmt.get(), _VSTD::make_wformat_args(__args...)); +} +#endif + +template +_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(basic_string_view<_CharT> __fmt, auto __args) { + __format::__formatted_size_buffer<_CharT> __buffer; + _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args)); + return _VSTD::move(__buffer).__result(); +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI size_t +formatted_size(format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(__fmt.get(), basic_format_args{_VSTD::make_format_args(__args...)}); +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI size_t +formatted_size(wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(__fmt.get(), basic_format_args{_VSTD::make_wformat_args(__args...)}); +} +# endif + +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + +template +requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt + __vformat_to( + _OutIt __out_it, locale __loc, basic_string_view<_CharT> __fmt, + basic_format_args> __args) { + if constexpr (same_as<_OutIt, _FormatOutIt>) + return _VSTD::__format::__vformat_to( + basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(_VSTD::move(__out_it), __args, _VSTD::move(__loc))); + else { + __format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)}; + _VSTD::__format::__vformat_to( + basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args, _VSTD::move(__loc))); + return _VSTD::move(__buffer).__out_it(); + } +} + +template _OutIt> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt vformat_to( + _OutIt __out_it, locale __loc, string_view __fmt, format_args __args) { + return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt, + __args); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt vformat_to( + _OutIt __out_it, locale __loc, wstring_view __fmt, wformat_args __args) { + return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt, + __args); +} +#endif + +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +format_to(_OutIt __out_it, locale __loc, format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.get(), + _VSTD::make_format_args(__args...)); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _OutIt +format_to(_OutIt __out_it, locale __loc, wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.get(), + _VSTD::make_wformat_args(__args...)); +} +#endif + +// TODO FMT This needs to be a template or std::to_chars(floating-point) availability markup +// fires too eagerly, see http://llvm.org/PR61563. +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI string +vformat(locale __loc, string_view __fmt, format_args __args) { + string __res; + _VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt, + __args); + return __res; +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +// TODO FMT This needs to be a template or std::to_chars(floating-point) availability markup +// fires too eagerly, see http://llvm.org/PR61563. +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI wstring +vformat(locale __loc, wstring_view __fmt, wformat_args __args) { + wstring __res; + _VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt, + __args); + return __res; +} +# endif + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI string +format(locale __loc, format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(_VSTD::move(__loc), __fmt.get(), + _VSTD::make_format_args(__args...)); +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI wstring +format(locale __loc, wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(_VSTD::move(__loc), __fmt.get(), + _VSTD::make_wformat_args(__args...)); +} +# endif + +template +_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, + locale __loc, basic_string_view<_CharT> __fmt, + basic_format_args<_Context> __args) { + __format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n}; + _VSTD::__format::__vformat_to( + basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args, _VSTD::move(__loc))); + return _VSTD::move(__buffer).__result(); +} + +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> +format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, format_string<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.get(), + _VSTD::make_format_args(__args...)); +} + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template _OutIt, class... _Args> +_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> +format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, wformat_string<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.get(), + _VSTD::make_wformat_args(__args...)); +} +#endif + +template +_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(locale __loc, basic_string_view<_CharT> __fmt, auto __args) { + __format::__formatted_size_buffer<_CharT> __buffer; + _VSTD::__format::__vformat_to( + basic_format_parse_context{__fmt, __args.__size()}, + _VSTD::__format_context_create(__buffer.__make_output_iterator(), __args, _VSTD::move(__loc))); + return _VSTD::move(__buffer).__result(); +} + +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI size_t +formatted_size(locale __loc, format_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.get(), basic_format_args{_VSTD::make_format_args(__args...)}); +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template +_LIBCPP_NODISCARD_EXT _LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI size_t +formatted_size(locale __loc, wformat_string<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.get(), basic_format_args{_VSTD::make_wformat_args(__args...)}); +} +# endif + +# endif // _LIBCPP_HAS_NO_LOCALIZATION + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_FUNCTIONS diff --git a/lib/libcxx/include/__format/format_fwd.h b/lib/libcxx/include/__format/format_fwd.h new file mode 100644 index 0000000..120b2fc --- /dev/null +++ b/lib/libcxx/include/__format/format_fwd.h @@ -0,0 +1,39 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_FWD_H +#define _LIBCPP___FORMAT_FORMAT_FWD_H + +#include <__availability> +#include <__config> +#include <__iterator/concepts.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +class _LIBCPP_TEMPLATE_VIS basic_format_arg; + +template + requires output_iterator<_OutIt, const _CharT&> +class _LIBCPP_TEMPLATE_VIS basic_format_context; + +template +struct _LIBCPP_TEMPLATE_VIS formatter; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_FWD_H diff --git a/lib/libcxx/include/__format/format_parse_context.h b/lib/libcxx/include/__format/format_parse_context.h new file mode 100644 index 0000000..79f53f7 --- /dev/null +++ b/lib/libcxx/include/__format/format_parse_context.h @@ -0,0 +1,113 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_PARSE_CONTEXT_H +#define _LIBCPP___FORMAT_FORMAT_PARSE_CONTEXT_H + +#include <__config> +#include <__format/format_error.h> +#include <__type_traits/is_constant_evaluated.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +class _LIBCPP_TEMPLATE_VIS basic_format_parse_context { +public: + using char_type = _CharT; + using const_iterator = typename basic_string_view<_CharT>::const_iterator; + using iterator = const_iterator; + + _LIBCPP_HIDE_FROM_ABI + constexpr explicit basic_format_parse_context(basic_string_view<_CharT> __fmt, + size_t __num_args = 0) noexcept + : __begin_(__fmt.begin()), + __end_(__fmt.end()), + __indexing_(__unknown), + __next_arg_id_(0), + __num_args_(__num_args) {} + + basic_format_parse_context(const basic_format_parse_context&) = delete; + basic_format_parse_context& + operator=(const basic_format_parse_context&) = delete; + + _LIBCPP_HIDE_FROM_ABI constexpr const_iterator begin() const noexcept { + return __begin_; + } + _LIBCPP_HIDE_FROM_ABI constexpr const_iterator end() const noexcept { + return __end_; + } + _LIBCPP_HIDE_FROM_ABI constexpr void advance_to(const_iterator __it) { + __begin_ = __it; + } + + _LIBCPP_HIDE_FROM_ABI constexpr size_t next_arg_id() { + if (__indexing_ == __manual) + std::__throw_format_error("Using automatic argument numbering in manual argument numbering mode"); + + if (__indexing_ == __unknown) + __indexing_ = __automatic; + + // Throws an exception to make the expression a non core constant + // expression as required by: + // [format.parse.ctx]/8 + // Remarks: Let cur-arg-id be the value of next_arg_id_ prior to this + // call. Call expressions where cur-arg-id >= num_args_ is true are not + // core constant expressions (7.7 [expr.const]). + // Note: the Throws clause [format.parse.ctx]/9 doesn't specify the + // behavior when id >= num_args_. + if (is_constant_evaluated() && __next_arg_id_ >= __num_args_) + std::__throw_format_error("Argument index outside the valid range"); + + return __next_arg_id_++; + } + _LIBCPP_HIDE_FROM_ABI constexpr void check_arg_id(size_t __id) { + if (__indexing_ == __automatic) + std::__throw_format_error("Using manual argument numbering in automatic argument numbering mode"); + + if (__indexing_ == __unknown) + __indexing_ = __manual; + + // Throws an exception to make the expression a non core constant + // expression as required by: + // [format.parse.ctx]/11 + // Remarks: Call expressions where id >= num_args_ are not core constant + // expressions ([expr.const]). + // Note: the Throws clause [format.parse.ctx]/10 doesn't specify the + // behavior when id >= num_args_. + if (is_constant_evaluated() && __id >= __num_args_) + std::__throw_format_error("Argument index outside the valid range"); + } + +private: + iterator __begin_; + iterator __end_; + enum _Indexing { __unknown, __manual, __automatic }; + _Indexing __indexing_; + size_t __next_arg_id_; + size_t __num_args_; +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(basic_format_parse_context); + +using format_parse_context = basic_format_parse_context; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wformat_parse_context = basic_format_parse_context; +#endif + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_PARSE_CONTEXT_H diff --git a/lib/libcxx/include/__format/format_string.h b/lib/libcxx/include/__format/format_string.h new file mode 100644 index 0000000..2e1c71b --- /dev/null +++ b/lib/libcxx/include/__format/format_string.h @@ -0,0 +1,168 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_STRING_H +#define _LIBCPP___FORMAT_FORMAT_STRING_H + +#include <__assert> +#include <__config> +#include <__format/format_error.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> // iter_value_t +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format { + +template +struct _LIBCPP_TEMPLATE_VIS __parse_number_result { + _Iterator __last; + uint32_t __value; +}; + +template +__parse_number_result(_Iterator, uint32_t) -> __parse_number_result<_Iterator>; + +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_number(_Iterator __begin, _Iterator __end); + +/** + * The maximum value of a numeric argument. + * + * This is used for: + * * arg-id + * * width as value or arg-id. + * * precision as value or arg-id. + * + * The value is compatible with the maximum formatting width and precision + * using the `%*` syntax on a 32-bit system. + */ +inline constexpr uint32_t __number_max = INT32_MAX; + +namespace __detail { +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_zero(_Iterator __begin, _Iterator, auto& __parse_ctx) { + __parse_ctx.check_arg_id(0); + return {++__begin, 0}; // can never be larger than the maximum. +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_automatic(_Iterator __begin, _Iterator, auto& __parse_ctx) { + size_t __value = __parse_ctx.next_arg_id(); + _LIBCPP_ASSERT_UNCATEGORIZED( + __value <= __number_max, + "Compilers don't support this number of arguments"); + + return {__begin, uint32_t(__value)}; +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_manual(_Iterator __begin, _Iterator __end, auto& __parse_ctx) { + __parse_number_result<_Iterator> __r = __format::__parse_number(__begin, __end); + __parse_ctx.check_arg_id(__r.__value); + return __r; +} + +} // namespace __detail + +/** + * Parses a number. + * + * The number is used for the 31-bit values @em width and @em precision. This + * allows a maximum value of 2147483647. + */ +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_number(_Iterator __begin, _Iterator __end_input) { + using _CharT = iter_value_t<_Iterator>; + static_assert(__format::__number_max == INT32_MAX, + "The algorithm is implemented based on this value."); + /* + * Limit the input to 9 digits, otherwise we need two checks during every + * iteration: + * - Are we at the end of the input? + * - Does the value exceed width of an uint32_t? (Switching to uint64_t would + * have the same issue, but with a higher maximum.) + */ + _Iterator __end = __end_input - __begin > 9 ? __begin + 9 : __end_input; + uint32_t __value = *__begin - _CharT('0'); + while (++__begin != __end) { + if (*__begin < _CharT('0') || *__begin > _CharT('9')) + return {__begin, __value}; + + __value = __value * 10 + *__begin - _CharT('0'); + } + + if (__begin != __end_input && *__begin >= _CharT('0') && + *__begin <= _CharT('9')) { + + /* + * There are more than 9 digits, do additional validations: + * - Does the 10th digit exceed the maximum allowed value? + * - Are there more than 10 digits? + * (More than 10 digits always overflows the maximum.) + */ + uint64_t __v = uint64_t(__value) * 10 + *__begin++ - _CharT('0'); + if (__v > __number_max || + (__begin != __end_input && *__begin >= _CharT('0') && + *__begin <= _CharT('9'))) + std::__throw_format_error("The numeric value of the format specifier is too large"); + + __value = __v; + } + + return {__begin, __value}; +} + +/** + * Multiplexer for all parse functions. + * + * The parser will return a pointer beyond the last consumed character. This + * should be the closing '}' of the arg-id. + */ +template +_LIBCPP_HIDE_FROM_ABI constexpr __parse_number_result<_Iterator> +__parse_arg_id(_Iterator __begin, _Iterator __end, auto& __parse_ctx) { + using _CharT = iter_value_t<_Iterator>; + switch (*__begin) { + case _CharT('0'): + return __detail::__parse_zero(__begin, __end, __parse_ctx); + + case _CharT(':'): + // This case is conditionally valid. It's allowed in an arg-id in the + // replacement-field, but not in the std-format-spec. The caller can + // provide a better diagnostic, so accept it here unconditionally. + case _CharT('}'): + return __detail::__parse_automatic(__begin, __end, __parse_ctx); + } + if (*__begin < _CharT('0') || *__begin > _CharT('9')) + std::__throw_format_error("The argument index starts with an invalid character"); + + return __detail::__parse_manual(__begin, __end, __parse_ctx); +} + +} // namespace __format + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_STRING_H diff --git a/lib/libcxx/include/__format/format_to_n_result.h b/lib/libcxx/include/__format/format_to_n_result.h new file mode 100644 index 0000000..6f30546 --- /dev/null +++ b/lib/libcxx/include/__format/format_to_n_result.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMAT_TO_N_RESULT_H +#define _LIBCPP___FORMAT_FORMAT_TO_N_RESULT_H + +#include <__config> +#include <__iterator/incrementable_traits.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +struct _LIBCPP_TEMPLATE_VIS format_to_n_result { + _OutIt out; + iter_difference_t<_OutIt> size; +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(format_to_n_result); + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMAT_TO_N_RESULT_H diff --git a/lib/libcxx/include/__format/formatter.h b/lib/libcxx/include/__format/formatter.h new file mode 100644 index 0000000..172b2d5 --- /dev/null +++ b/lib/libcxx/include/__format/formatter.h @@ -0,0 +1,54 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_H +#define _LIBCPP___FORMAT_FORMATTER_H + +#include <__availability> +#include <__config> +#include <__format/format_fwd.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +/// The default formatter template. +/// +/// [format.formatter.spec]/5 +/// If F is a disabled specialization of formatter, these values are false: +/// - is_default_constructible_v, +/// - is_copy_constructible_v, +/// - is_move_constructible_v, +/// - is_copy_assignable, and +/// - is_move_assignable. +template +struct _LIBCPP_TEMPLATE_VIS formatter { + formatter() = delete; + formatter(const formatter&) = delete; + formatter& operator=(const formatter&) = delete; +}; + +# if _LIBCPP_STD_VER >= 23 + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __set_debug_format(_Tp& __formatter) { + if constexpr (requires { __formatter.set_debug_format(); }) + __formatter.set_debug_format(); +} + +# endif // _LIBCPP_STD_VER >= 23 +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_H diff --git a/lib/libcxx/include/__format/formatter_bool.h b/lib/libcxx/include/__format/formatter_bool.h new file mode 100644 index 0000000..3c8ae95 --- /dev/null +++ b/lib/libcxx/include/__format/formatter_bool.h @@ -0,0 +1,77 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_BOOL_H +#define _LIBCPP___FORMAT_FORMATTER_BOOL_H + +#include <__algorithm/copy.h> +#include <__assert> +#include <__availability> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_integral.h> +#include <__format/parser_std_format_spec.h> +#include <__utility/unreachable.h> + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); + __format_spec::__process_parsed_bool(__parser_, "a bool"); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(bool __value, _FormatContext& __ctx) const { + switch (__parser_.__type_) { + case __format_spec::__type::__default: + case __format_spec::__type::__string: + return __formatter::__format_bool(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); + + case __format_spec::__type::__binary_lower_case: + case __format_spec::__type::__binary_upper_case: + case __format_spec::__type::__octal: + case __format_spec::__type::__decimal: + case __format_spec::__type::__hexadecimal_lower_case: + case __format_spec::__type::__hexadecimal_upper_case: + // Promotes bool to an integral type. This reduces the number of + // instantiations of __format_integer reducing code size. + return __formatter::__format_integer( + static_cast(__value), __ctx, __parser_.__get_parsed_std_specifications(__ctx)); + + default: + _LIBCPP_ASSERT_UNCATEGORIZED(false, "The parse function should have validated the type"); + __libcpp_unreachable(); + } + } + + __format_spec::__parser<_CharT> __parser_; +}; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_BOOL_H diff --git a/lib/libcxx/include/__format/formatter_char.h b/lib/libcxx/include/__format/formatter_char.h new file mode 100644 index 0000000..d6e61e8 --- /dev/null +++ b/lib/libcxx/include/__format/formatter_char.h @@ -0,0 +1,96 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_CHAR_H +#define _LIBCPP___FORMAT_FORMATTER_CHAR_H + +#include <__availability> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_integral.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__format/write_escaped.h> +#include <__type_traits/conditional.h> +#include <__type_traits/is_signed.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS __formatter_char { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); + __format_spec::__process_parsed_char(__parser_, "a character"); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_CharT __value, _FormatContext& __ctx) const { + if (__parser_.__type_ == __format_spec::__type::__default || __parser_.__type_ == __format_spec::__type::__char) + return __formatter::__format_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); + +# if _LIBCPP_STD_VER >= 23 + if (__parser_.__type_ == __format_spec::__type::__debug) + return __formatter::__format_escaped_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); +# endif + + if constexpr (sizeof(_CharT) <= sizeof(int)) + // Promotes _CharT to an integral type. This reduces the number of + // instantiations of __format_integer reducing code size. + return __formatter::__format_integer( + static_cast, int, unsigned>>(__value), + __ctx, + __parser_.__get_parsed_std_specifications(__ctx)); + else + return __formatter::__format_integer(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(char __value, _FormatContext& __ctx) const + requires(same_as<_CharT, wchar_t>) + { + return format(static_cast(__value), __ctx); + } + +# if _LIBCPP_STD_VER >= 23 + _LIBCPP_HIDE_FROM_ABI constexpr void set_debug_format() { __parser_.__type_ = __format_spec::__type::__debug; } +# endif + + __format_spec::__parser<_CharT> __parser_; +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_char {}; + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_char {}; + +template <> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_char { +}; + +# endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_CHAR_H diff --git a/lib/libcxx/include/__format/formatter_floating_point.h b/lib/libcxx/include/__format/formatter_floating_point.h new file mode 100644 index 0000000..fbb8aa9 --- /dev/null +++ b/lib/libcxx/include/__format/formatter_floating_point.h @@ -0,0 +1,793 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_FLOATING_POINT_H +#define _LIBCPP___FORMAT_FORMATTER_FLOATING_POINT_H + +#include <__algorithm/copy_n.h> +#include <__algorithm/find.h> +#include <__algorithm/max.h> +#include <__algorithm/min.h> +#include <__algorithm/rotate.h> +#include <__algorithm/transform.h> +#include <__charconv/chars_format.h> +#include <__charconv/to_chars_floating_point.h> +#include <__charconv/to_chars_result.h> +#include <__concepts/arithmetic.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_integral.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__iterator/concepts.h> +#include <__memory/allocator.h> +#include <__system_error/errc.h> +#include <__type_traits/conditional.h> +#include <__utility/move.h> +#include <__utility/unreachable.h> +#include +#include + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __formatter { + +template +_LIBCPP_HIDE_FROM_ABI char* __to_buffer(char* __first, char* __last, _Tp __value) { + to_chars_result __r = _VSTD::to_chars(__first, __last, __value); + _LIBCPP_ASSERT_UNCATEGORIZED(__r.ec == errc(0), "Internal buffer too small"); + return __r.ptr; +} + +template +_LIBCPP_HIDE_FROM_ABI char* __to_buffer(char* __first, char* __last, _Tp __value, chars_format __fmt) { + to_chars_result __r = _VSTD::to_chars(__first, __last, __value, __fmt); + _LIBCPP_ASSERT_UNCATEGORIZED(__r.ec == errc(0), "Internal buffer too small"); + return __r.ptr; +} + +template +_LIBCPP_HIDE_FROM_ABI char* __to_buffer(char* __first, char* __last, _Tp __value, chars_format __fmt, int __precision) { + to_chars_result __r = _VSTD::to_chars(__first, __last, __value, __fmt, __precision); + _LIBCPP_ASSERT_UNCATEGORIZED(__r.ec == errc(0), "Internal buffer too small"); + return __r.ptr; +} + +// https://en.cppreference.com/w/cpp/language/types#cite_note-1 +// float min subnormal: +/-0x1p-149 max: +/- 3.402,823,4 10^38 +// double min subnormal: +/-0x1p-1074 max +/- 1.797,693,134,862,315,7 10^308 +// long double (x86) min subnormal: +/-0x1p-16446 max: +/- 1.189,731,495,357,231,765,021 10^4932 +// +// The maximum number of digits required for the integral part is based on the +// maximum's value power of 10. Every power of 10 requires one additional +// decimal digit. +// The maximum number of digits required for the fractional part is based on +// the minimal subnormal hexadecimal output's power of 10. Every division of a +// fraction's binary 1 by 2, requires one additional decimal digit. +// +// The maximum size of a formatted value depends on the selected output format. +// Ignoring the fact the format string can request a precision larger than the +// values maximum required, these values are: +// +// sign 1 code unit +// __max_integral +// radix point 1 code unit +// __max_fractional +// exponent character 1 code unit +// sign 1 code unit +// __max_fractional_value +// ----------------------------------- +// total 4 code units extra required. +// +// TODO FMT Optimize the storage to avoid storing digits that are known to be zero. +// https://www.exploringbinary.com/maximum-number-of-decimal-digits-in-binary-floating-point-numbers/ + +// TODO FMT Add long double specialization when to_chars has proper long double support. +template +struct __traits; + +template +_LIBCPP_HIDE_FROM_ABI constexpr size_t __float_buffer_size(int __precision) { + using _Traits = __traits<_Fp>; + return 4 + _Traits::__max_integral + __precision + _Traits::__max_fractional_value; +} + +template <> +struct __traits { + static constexpr int __max_integral = 38; + static constexpr int __max_fractional = 149; + static constexpr int __max_fractional_value = 3; + static constexpr size_t __stack_buffer_size = 256; + + static constexpr int __hex_precision_digits = 3; +}; + +template <> +struct __traits { + static constexpr int __max_integral = 308; + static constexpr int __max_fractional = 1074; + static constexpr int __max_fractional_value = 4; + static constexpr size_t __stack_buffer_size = 1024; + + static constexpr int __hex_precision_digits = 4; +}; + +/// Helper class to store the conversion buffer. +/// +/// Depending on the maxium size required for a value, the buffer is allocated +/// on the stack or the heap. +template +class _LIBCPP_TEMPLATE_VIS __float_buffer { + using _Traits = __traits<_Fp>; + +public: + // TODO FMT Improve this constructor to do a better estimate. + // When using a scientific formatting with a precision of 6 a stack buffer + // will always suffice. At the moment that isn't important since floats and + // doubles use a stack buffer, unless the precision used in the format string + // is large. + // When supporting long doubles the __max_integral part becomes 4932 which + // may be too much for some platforms. For these cases a better estimate is + // required. + explicit _LIBCPP_HIDE_FROM_ABI __float_buffer(int __precision) + : __precision_(__precision != -1 ? __precision : _Traits::__max_fractional) { + + // When the precision is larger than _Traits::__max_fractional the digits in + // the range (_Traits::__max_fractional, precision] will contain the value + // zero. There's no need to request to_chars to write these zeros: + // - When the value is large a temporary heap buffer needs to be allocated. + // - When to_chars writes the values they need to be "copied" to the output: + // - char: std::fill on the output iterator is faster than std::copy. + // - wchar_t: same argument as char, but additional std::copy won't work. + // The input is always a char buffer, so every char in the buffer needs + // to be converted from a char to a wchar_t. + if (__precision_ > _Traits::__max_fractional) { + __num_trailing_zeros_ = __precision_ - _Traits::__max_fractional; + __precision_ = _Traits::__max_fractional; + } + + __size_ = __formatter::__float_buffer_size<_Fp>(__precision_); + if (__size_ > _Traits::__stack_buffer_size) + // The allocated buffer's contents don't need initialization. + __begin_ = allocator{}.allocate(__size_); + else + __begin_ = __buffer_; + } + + _LIBCPP_HIDE_FROM_ABI ~__float_buffer() { + if (__size_ > _Traits::__stack_buffer_size) + allocator{}.deallocate(__begin_, __size_); + } + _LIBCPP_HIDE_FROM_ABI __float_buffer(const __float_buffer&) = delete; + _LIBCPP_HIDE_FROM_ABI __float_buffer& operator=(const __float_buffer&) = delete; + + _LIBCPP_HIDE_FROM_ABI char* begin() const { return __begin_; } + _LIBCPP_HIDE_FROM_ABI char* end() const { return __begin_ + __size_; } + + _LIBCPP_HIDE_FROM_ABI int __precision() const { return __precision_; } + _LIBCPP_HIDE_FROM_ABI int __num_trailing_zeros() const { return __num_trailing_zeros_; } + _LIBCPP_HIDE_FROM_ABI void __remove_trailing_zeros() { __num_trailing_zeros_ = 0; } + _LIBCPP_HIDE_FROM_ABI void __add_trailing_zeros(int __zeros) { __num_trailing_zeros_ += __zeros; } + +private: + int __precision_; + int __num_trailing_zeros_{0}; + size_t __size_; + char* __begin_; + char __buffer_[_Traits::__stack_buffer_size]; +}; + +struct __float_result { + /// Points at the beginning of the integral part in the buffer. + /// + /// When there's no sign character this points at the start of the buffer. + char* __integral; + + /// Points at the radix point, when not present it's the same as \ref __last. + char* __radix_point; + + /// Points at the exponent character, when not present it's the same as \ref __last. + char* __exponent; + + /// Points beyond the last written element in the buffer. + char* __last; +}; + +/// Finds the position of the exponent character 'e' at the end of the buffer. +/// +/// Assuming there is an exponent the input will terminate with +/// eSdd and eSdddd (S = sign, d = digit) +/// +/// \returns a pointer to the exponent or __last when not found. +constexpr inline _LIBCPP_HIDE_FROM_ABI char* __find_exponent(char* __first, char* __last) { + ptrdiff_t __size = __last - __first; + if (__size >= 4) { + __first = __last - _VSTD::min(__size, ptrdiff_t(6)); + for (; __first != __last - 3; ++__first) { + if (*__first == 'e') + return __first; + } + } + return __last; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_default(const __float_buffer<_Fp>& __buffer, _Tp __value, + char* __integral) { + __float_result __result; + __result.__integral = __integral; + __result.__last = __formatter::__to_buffer(__integral, __buffer.end(), __value); + + __result.__exponent = __formatter::__find_exponent(__result.__integral, __result.__last); + + // Constrains: + // - There's at least one decimal digit before the radix point. + // - The radix point, when present, is placed before the exponent. + __result.__radix_point = _VSTD::find(__result.__integral + 1, __result.__exponent, '.'); + + // When the radix point isn't found its position is the exponent instead of + // __result.__last. + if (__result.__radix_point == __result.__exponent) + __result.__radix_point = __result.__last; + + // clang-format off + _LIBCPP_ASSERT_UNCATEGORIZED((__result.__integral != __result.__last) && + (__result.__radix_point == __result.__last || *__result.__radix_point == '.') && + (__result.__exponent == __result.__last || *__result.__exponent == 'e'), + "Post-condition failure."); + // clang-format on + + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_hexadecimal_lower_case(const __float_buffer<_Fp>& __buffer, + _Tp __value, int __precision, + char* __integral) { + __float_result __result; + __result.__integral = __integral; + if (__precision == -1) + __result.__last = __formatter::__to_buffer(__integral, __buffer.end(), __value, chars_format::hex); + else + __result.__last = __formatter::__to_buffer(__integral, __buffer.end(), __value, chars_format::hex, __precision); + + // H = one or more hex-digits + // S = sign + // D = one or more decimal-digits + // When the fractional part is zero and no precision the output is 0p+0 + // else the output is 0.HpSD + // So testing the second position can differentiate between these two cases. + char* __first = __integral + 1; + if (*__first == '.') { + __result.__radix_point = __first; + // One digit is the minimum + // 0.hpSd + // ^-- last + // ^---- integral = end of search + // ^-------- start of search + // 0123456 + // + // Four digits is the maximum + // 0.hpSdddd + // ^-- last + // ^---- integral = end of search + // ^-------- start of search + // 0123456789 + static_assert(__traits<_Fp>::__hex_precision_digits <= 4, "Guard against possible underflow."); + + char* __last = __result.__last - 2; + __first = __last - __traits<_Fp>::__hex_precision_digits; + __result.__exponent = _VSTD::find(__first, __last, 'p'); + } else { + __result.__radix_point = __result.__last; + __result.__exponent = __first; + } + + // clang-format off + _LIBCPP_ASSERT_UNCATEGORIZED((__result.__integral != __result.__last) && + (__result.__radix_point == __result.__last || *__result.__radix_point == '.') && + (__result.__exponent != __result.__last && *__result.__exponent == 'p'), + "Post-condition failure."); + // clang-format on + + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_hexadecimal_upper_case(const __float_buffer<_Fp>& __buffer, + _Tp __value, int __precision, + char* __integral) { + __float_result __result = + __formatter::__format_buffer_hexadecimal_lower_case(__buffer, __value, __precision, __integral); + _VSTD::transform(__result.__integral, __result.__exponent, __result.__integral, __hex_to_upper); + *__result.__exponent = 'P'; + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_scientific_lower_case(const __float_buffer<_Fp>& __buffer, + _Tp __value, int __precision, + char* __integral) { + __float_result __result; + __result.__integral = __integral; + __result.__last = + __formatter::__to_buffer(__integral, __buffer.end(), __value, chars_format::scientific, __precision); + + char* __first = __integral + 1; + _LIBCPP_ASSERT_UNCATEGORIZED(__first != __result.__last, "No exponent present"); + if (*__first == '.') { + __result.__radix_point = __first; + __result.__exponent = __formatter::__find_exponent(__first + 1, __result.__last); + } else { + __result.__radix_point = __result.__last; + __result.__exponent = __first; + } + + // clang-format off + _LIBCPP_ASSERT_UNCATEGORIZED((__result.__integral != __result.__last) && + (__result.__radix_point == __result.__last || *__result.__radix_point == '.') && + (__result.__exponent != __result.__last && *__result.__exponent == 'e'), + "Post-condition failure."); + // clang-format on + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_scientific_upper_case(const __float_buffer<_Fp>& __buffer, + _Tp __value, int __precision, + char* __integral) { + __float_result __result = + __formatter::__format_buffer_scientific_lower_case(__buffer, __value, __precision, __integral); + *__result.__exponent = 'E'; + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_fixed(const __float_buffer<_Fp>& __buffer, _Tp __value, + int __precision, char* __integral) { + __float_result __result; + __result.__integral = __integral; + __result.__last = __formatter::__to_buffer(__integral, __buffer.end(), __value, chars_format::fixed, __precision); + + // When there's no precision there's no radix point. + // Else the radix point is placed at __precision + 1 from the end. + // By converting __precision to a bool the subtraction can be done + // unconditionally. + __result.__radix_point = __result.__last - (__precision + bool(__precision)); + __result.__exponent = __result.__last; + + // clang-format off + _LIBCPP_ASSERT_UNCATEGORIZED((__result.__integral != __result.__last) && + (__result.__radix_point == __result.__last || *__result.__radix_point == '.') && + (__result.__exponent == __result.__last), + "Post-condition failure."); + // clang-format on + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_general_lower_case(__float_buffer<_Fp>& __buffer, _Tp __value, + int __precision, char* __integral) { + + __buffer.__remove_trailing_zeros(); + + __float_result __result; + __result.__integral = __integral; + __result.__last = __formatter::__to_buffer(__integral, __buffer.end(), __value, chars_format::general, __precision); + + char* __first = __integral + 1; + if (__first == __result.__last) { + __result.__radix_point = __result.__last; + __result.__exponent = __result.__last; + } else { + __result.__exponent = __formatter::__find_exponent(__first, __result.__last); + if (__result.__exponent != __result.__last) + // In scientific mode if there's a radix point it will always be after + // the first digit. (This is the position __first points at). + __result.__radix_point = *__first == '.' ? __first : __result.__last; + else { + // In fixed mode the algorithm truncates trailing spaces and possibly the + // radix point. There's no good guess for the position of the radix point + // therefore scan the output after the first digit. + __result.__radix_point = _VSTD::find(__first, __result.__last, '.'); + } + } + + // clang-format off + _LIBCPP_ASSERT_UNCATEGORIZED((__result.__integral != __result.__last) && + (__result.__radix_point == __result.__last || *__result.__radix_point == '.') && + (__result.__exponent == __result.__last || *__result.__exponent == 'e'), + "Post-condition failure."); + // clang-format on + + return __result; +} + +template +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer_general_upper_case(__float_buffer<_Fp>& __buffer, _Tp __value, + int __precision, char* __integral) { + __float_result __result = __formatter::__format_buffer_general_lower_case(__buffer, __value, __precision, __integral); + if (__result.__exponent != __result.__last) + *__result.__exponent = 'E'; + return __result; +} + +/// Fills the buffer with the data based on the requested formatting. +/// +/// This function, when needed, turns the characters to upper case and +/// determines the "interesting" locations which are returned to the caller. +/// +/// This means the caller never has to convert the contents of the buffer to +/// upper case or search for radix points and the location of the exponent. +/// This gives a bit of overhead. The original code didn't do that, but due +/// to the number of possible additional work needed to turn this number to +/// the proper output the code was littered with tests for upper cases and +/// searches for radix points and exponents. +/// - When a precision larger than the type's precision is selected +/// additional zero characters need to be written before the exponent. +/// - alternate form needs to add a radix point when not present. +/// - localization needs to do grouping in the integral part. +template +// TODO FMT _Fp should just be _Tp when to_chars has proper long double support. +_LIBCPP_HIDE_FROM_ABI __float_result __format_buffer( + __float_buffer<_Fp>& __buffer, + _Tp __value, + bool __negative, + bool __has_precision, + __format_spec::__sign __sign, + __format_spec::__type __type) { + char* __first = __formatter::__insert_sign(__buffer.begin(), __negative, __sign); + switch (__type) { + case __format_spec::__type::__default: + if (__has_precision) + return __formatter::__format_buffer_general_lower_case(__buffer, __value, __buffer.__precision(), __first); + else + return __formatter::__format_buffer_default(__buffer, __value, __first); + + case __format_spec::__type::__hexfloat_lower_case: + return __formatter::__format_buffer_hexadecimal_lower_case( + __buffer, __value, __has_precision ? __buffer.__precision() : -1, __first); + + case __format_spec::__type::__hexfloat_upper_case: + return __formatter::__format_buffer_hexadecimal_upper_case( + __buffer, __value, __has_precision ? __buffer.__precision() : -1, __first); + + case __format_spec::__type::__scientific_lower_case: + return __formatter::__format_buffer_scientific_lower_case(__buffer, __value, __buffer.__precision(), __first); + + case __format_spec::__type::__scientific_upper_case: + return __formatter::__format_buffer_scientific_upper_case(__buffer, __value, __buffer.__precision(), __first); + + case __format_spec::__type::__fixed_lower_case: + case __format_spec::__type::__fixed_upper_case: + return __formatter::__format_buffer_fixed(__buffer, __value, __buffer.__precision(), __first); + + case __format_spec::__type::__general_lower_case: + return __formatter::__format_buffer_general_lower_case(__buffer, __value, __buffer.__precision(), __first); + + case __format_spec::__type::__general_upper_case: + return __formatter::__format_buffer_general_upper_case(__buffer, __value, __buffer.__precision(), __first); + + default: + _LIBCPP_ASSERT_UNCATEGORIZED(false, "The parser should have validated the type"); + __libcpp_unreachable(); + } +} + +# ifndef _LIBCPP_HAS_NO_LOCALIZATION +template +_LIBCPP_HIDE_FROM_ABI _OutIt __format_locale_specific_form( + _OutIt __out_it, + const __float_buffer<_Fp>& __buffer, + const __float_result& __result, + _VSTD::locale __loc, + __format_spec::__parsed_specifications<_CharT> __specs) { + const auto& __np = std::use_facet>(__loc); + string __grouping = __np.grouping(); + char* __first = __result.__integral; + // When no radix point or exponent are present __last will be __result.__last. + char* __last = _VSTD::min(__result.__radix_point, __result.__exponent); + + ptrdiff_t __digits = __last - __first; + if (!__grouping.empty()) { + if (__digits <= __grouping[0]) + __grouping.clear(); + else + __grouping = __formatter::__determine_grouping(__digits, __grouping); + } + + ptrdiff_t __size = + __result.__last - __buffer.begin() + // Formatted string + __buffer.__num_trailing_zeros() + // Not yet rendered zeros + __grouping.size() - // Grouping contains one + !__grouping.empty(); // additional character + + __formatter::__padding_size_result __padding = {0, 0}; + bool __zero_padding = __specs.__alignment_ == __format_spec::__alignment::__zero_padding; + if (__size < __specs.__width_) { + if (__zero_padding) { + __specs.__alignment_ = __format_spec::__alignment::__right; + __specs.__fill_.__data[0] = _CharT('0'); + } + + __padding = __formatter::__padding_size(__size, __specs.__width_, __specs.__alignment_); + } + + // sign and (zero padding or alignment) + if (__zero_padding && __first != __buffer.begin()) + *__out_it++ = *__buffer.begin(); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __padding.__before_, __specs.__fill_); + if (!__zero_padding && __first != __buffer.begin()) + *__out_it++ = *__buffer.begin(); + + // integral part + if (__grouping.empty()) { + __out_it = __formatter::__copy(__first, __digits, _VSTD::move(__out_it)); + } else { + auto __r = __grouping.rbegin(); + auto __e = __grouping.rend() - 1; + _CharT __sep = __np.thousands_sep(); + // The output is divided in small groups of numbers to write: + // - A group before the first separator. + // - A separator and a group, repeated for the number of separators. + // - A group after the last separator. + // This loop achieves that process by testing the termination condition + // midway in the loop. + while (true) { + __out_it = __formatter::__copy(__first, *__r, _VSTD::move(__out_it)); + __first += *__r; + + if (__r == __e) + break; + + ++__r; + *__out_it++ = __sep; + } + } + + // fractional part + if (__result.__radix_point != __result.__last) { + *__out_it++ = __np.decimal_point(); + __out_it = __formatter::__copy(__result.__radix_point + 1, __result.__exponent, _VSTD::move(__out_it)); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __buffer.__num_trailing_zeros(), _CharT('0')); + } + + // exponent + if (__result.__exponent != __result.__last) + __out_it = __formatter::__copy(__result.__exponent, __result.__last, _VSTD::move(__out_it)); + + // alignment + return __formatter::__fill(_VSTD::move(__out_it), __padding.__after_, __specs.__fill_); +} +# endif // _LIBCPP_HAS_NO_LOCALIZATION + +template +_LIBCPP_HIDE_FROM_ABI _OutIt __format_floating_point_non_finite( + _OutIt __out_it, __format_spec::__parsed_specifications<_CharT> __specs, bool __negative, bool __isnan) { + char __buffer[4]; + char* __last = __formatter::__insert_sign(__buffer, __negative, __specs.__std_.__sign_); + + // to_chars can return inf, infinity, nan, and nan(n-char-sequence). + // The format library requires inf and nan. + // All in one expression to avoid dangling references. + bool __upper_case = + __specs.__std_.__type_ == __format_spec::__type::__hexfloat_upper_case || + __specs.__std_.__type_ == __format_spec::__type::__scientific_upper_case || + __specs.__std_.__type_ == __format_spec::__type::__fixed_upper_case || + __specs.__std_.__type_ == __format_spec::__type::__general_upper_case; + __last = _VSTD::copy_n(&("infnanINFNAN"[6 * __upper_case + 3 * __isnan]), 3, __last); + + // [format.string.std]/13 + // A zero (0) character preceding the width field pads the field with + // leading zeros (following any indication of sign or base) to the field + // width, except when applied to an infinity or NaN. + if (__specs.__alignment_ == __format_spec::__alignment::__zero_padding) + __specs.__alignment_ = __format_spec::__alignment::__right; + + return __formatter::__write(__buffer, __last, _VSTD::move(__out_it), __specs); +} + +/// Writes additional zero's for the precision before the exponent. +/// This is used when the precision requested in the format string is larger +/// than the maximum precision of the floating-point type. These precision +/// digits are always 0. +/// +/// \param __exponent The location of the exponent character. +/// \param __num_trailing_zeros The number of 0's to write before the exponent +/// character. +template +_LIBCPP_HIDE_FROM_ABI auto __write_using_trailing_zeros( + const _CharT* __first, + const _CharT* __last, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_ParserCharT> __specs, + size_t __size, + const _CharT* __exponent, + size_t __num_trailing_zeros) -> decltype(__out_it) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "Not a valid range"); + _LIBCPP_ASSERT_UNCATEGORIZED(__num_trailing_zeros > 0, + "The overload not writing trailing zeros should have been used"); + + __padding_size_result __padding = + __formatter::__padding_size(__size + __num_trailing_zeros, __specs.__width_, __specs.__alignment_); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __padding.__before_, __specs.__fill_); + __out_it = __formatter::__copy(__first, __exponent, _VSTD::move(__out_it)); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __num_trailing_zeros, _CharT('0')); + __out_it = __formatter::__copy(__exponent, __last, _VSTD::move(__out_it)); + return __formatter::__fill(_VSTD::move(__out_it), __padding.__after_, __specs.__fill_); +} + + +template +_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator +__format_floating_point(_Tp __value, _FormatContext& __ctx, __format_spec::__parsed_specifications<_CharT> __specs) { + bool __negative = _VSTD::signbit(__value); + + if (!_VSTD::isfinite(__value)) [[unlikely]] + return __formatter::__format_floating_point_non_finite(__ctx.out(), __specs, __negative, _VSTD::isnan(__value)); + + // Depending on the std-format-spec string the sign and the value + // might not be outputted together: + // - zero-padding may insert additional '0' characters. + // Therefore the value is processed as a non negative value. + // The function @ref __insert_sign will insert a '-' when the value was + // negative. + + if (__negative) + __value = -__value; + + // TODO FMT _Fp should just be _Tp when to_chars has proper long double support. + using _Fp = conditional_t, double, _Tp>; + // Force the type of the precision to avoid -1 to become an unsigned value. + __float_buffer<_Fp> __buffer(__specs.__precision_); + __float_result __result = __formatter::__format_buffer( + __buffer, __value, __negative, (__specs.__has_precision()), __specs.__std_.__sign_, __specs.__std_.__type_); + + if (__specs.__std_.__alternate_form_) { + if (__result.__radix_point == __result.__last) { + *__result.__last++ = '.'; + + // When there is an exponent the point needs to be moved before the + // exponent. When there's no exponent the rotate does nothing. Since + // rotate tests whether the operation is a nop, call it unconditionally. + _VSTD::rotate(__result.__exponent, __result.__last - 1, __result.__last); + __result.__radix_point = __result.__exponent; + + // The radix point is always placed before the exponent. + // - No exponent needs to point to the new last. + // - An exponent needs to move one position to the right. + // So it's safe to increment the value unconditionally. + ++__result.__exponent; + } + + // [format.string.std]/6 + // In addition, for g and G conversions, trailing zeros are not removed + // from the result. + // + // If the type option for a floating-point type is none it may use the + // general formatting, but it's not a g or G conversion. So in that case + // the formatting should not append trailing zeros. + bool __is_general = __specs.__std_.__type_ == __format_spec::__type::__general_lower_case || + __specs.__std_.__type_ == __format_spec::__type::__general_upper_case; + + if (__is_general) { + // https://en.cppreference.com/w/c/io/fprintf + // Let P equal the precision if nonzero, 6 if the precision is not + // specified, or 1 if the precision is 0. Then, if a conversion with + // style E would have an exponent of X: + int __p = _VSTD::max(1, (__specs.__has_precision() ? __specs.__precision_ : 6)); + if (__result.__exponent == __result.__last) + // if P > X >= -4, the conversion is with style f or F and precision P - 1 - X. + // By including the radix point it calculates P - (1 + X) + __p -= __result.__radix_point - __result.__integral; + else + // otherwise, the conversion is with style e or E and precision P - 1. + --__p; + + ptrdiff_t __precision = (__result.__exponent - __result.__radix_point) - 1; + if (__precision < __p) + __buffer.__add_trailing_zeros(__p - __precision); + } + } + +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + if (__specs.__std_.__locale_specific_form_) + return __formatter::__format_locale_specific_form(__ctx.out(), __buffer, __result, __ctx.locale(), __specs); +# endif + + ptrdiff_t __size = __result.__last - __buffer.begin(); + int __num_trailing_zeros = __buffer.__num_trailing_zeros(); + if (__size + __num_trailing_zeros >= __specs.__width_) { + if (__num_trailing_zeros && __result.__exponent != __result.__last) + // Insert trailing zeros before exponent character. + return __formatter::__copy( + __result.__exponent, + __result.__last, + __formatter::__fill(__formatter::__copy(__buffer.begin(), __result.__exponent, __ctx.out()), + __num_trailing_zeros, + _CharT('0'))); + + return __formatter::__fill( + __formatter::__copy(__buffer.begin(), __result.__last, __ctx.out()), __num_trailing_zeros, _CharT('0')); + } + + auto __out_it = __ctx.out(); + char* __first = __buffer.begin(); + if (__specs.__alignment_ == __format_spec::__alignment ::__zero_padding) { + // When there is a sign output it before the padding. Note the __size + // doesn't need any adjustment, regardless whether the sign is written + // here or in __formatter::__write. + if (__first != __result.__integral) + *__out_it++ = *__first++; + // After the sign is written, zero padding is the same a right alignment + // with '0'. + __specs.__alignment_ = __format_spec::__alignment::__right; + __specs.__fill_.__data[0] = _CharT('0'); + } + + if (__num_trailing_zeros) + return __formatter::__write_using_trailing_zeros( + __first, __result.__last, _VSTD::move(__out_it), __specs, __size, __result.__exponent, __num_trailing_zeros); + + return __formatter::__write(__first, __result.__last, _VSTD::move(__out_it), __specs, __size); +} + +} // namespace __formatter + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS __formatter_floating_point { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_floating_point); + __format_spec::__process_parsed_floating_point(__parser_, "a floating-point"); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_Tp __value, _FormatContext& __ctx) const { + return __formatter::__format_floating_point(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); + } + + __format_spec::__parser<_CharT> __parser_; +}; + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_floating_point<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_floating_point<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_floating_point<_CharT> {}; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FORMAT_FORMATTER_FLOATING_POINT_H diff --git a/lib/libcxx/include/__format/formatter_integer.h b/lib/libcxx/include/__format/formatter_integer.h new file mode 100644 index 0000000..5590bff --- /dev/null +++ b/lib/libcxx/include/__format/formatter_integer.h @@ -0,0 +1,107 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_INTEGER_H +#define _LIBCPP___FORMAT_FORMATTER_INTEGER_H + +#include <__availability> +#include <__concepts/arithmetic.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_integral.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__type_traits/is_void.h> +#include <__type_traits/make_32_64_or_128_bit.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + + _LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + + template <__fmt_char_type _CharT> + struct _LIBCPP_TEMPLATE_VIS __formatter_integer { + +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); + __format_spec::__process_parsed_integer(__parser_, "an integer"); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_Tp __value, _FormatContext& __ctx) const { + __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); + + if (__specs.__std_.__type_ == __format_spec::__type::__char) + return __formatter::__format_char(__value, __ctx.out(), __specs); + + using _Type = __make_32_64_or_128_bit_t<_Tp>; + static_assert(!is_void<_Type>::value, "unsupported integral type used in __formatter_integer::__format"); + + // Reduce the number of instantiation of the integer formatter + return __formatter::__format_integer(static_cast<_Type>(__value), __ctx, __specs); + } + + __format_spec::__parser<_CharT> __parser_; +}; + +// Signed integral types. +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_integer<_CharT> { +}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +# ifndef _LIBCPP_HAS_NO_INT128 +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter<__int128_t, _CharT> + : public __formatter_integer<_CharT> {}; +# endif + +// Unsigned integral types. +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_integer<_CharT> {}; +# ifndef _LIBCPP_HAS_NO_INT128 +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter<__uint128_t, _CharT> + : public __formatter_integer<_CharT> {}; +# endif + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_INTEGER_H diff --git a/lib/libcxx/include/__format/formatter_integral.h b/lib/libcxx/include/__format/formatter_integral.h new file mode 100644 index 0000000..54246aa --- /dev/null +++ b/lib/libcxx/include/__format/formatter_integral.h @@ -0,0 +1,434 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_INTEGRAL_H +#define _LIBCPP___FORMAT_FORMATTER_INTEGRAL_H + +#include <__charconv/to_chars_integral.h> +#include <__charconv/to_chars_result.h> +#include <__charconv/traits.h> +#include <__concepts/arithmetic.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_error.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__system_error/errc.h> +#include <__type_traits/make_unsigned.h> +#include <__utility/unreachable.h> +#include +#include +#include +#include + +#ifndef _LIBCPP_HAS_NO_LOCALIZATION +# include +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __formatter { + +// +// Generic +// + +_LIBCPP_HIDE_FROM_ABI inline char* __insert_sign(char* __buf, bool __negative, __format_spec::__sign __sign) { + if (__negative) + *__buf++ = '-'; + else + switch (__sign) { + case __format_spec::__sign::__default: + case __format_spec::__sign::__minus: + // No sign added. + break; + case __format_spec::__sign::__plus: + *__buf++ = '+'; + break; + case __format_spec::__sign::__space: + *__buf++ = ' '; + break; + } + + return __buf; +} + +/** + * Determines the required grouping based on the size of the input. + * + * The grouping's last element will be repeated. For simplicity this repeating + * is unwrapped based on the length of the input. (When the input is short some + * groups are not processed.) + * + * @returns The size of the groups to write. This means the number of + * separator characters written is size() - 1. + * + * @note Since zero-sized groups cause issues they are silently ignored. + * + * @note The grouping field of the locale is always a @c std::string, + * regardless whether the @c std::numpunct's type is @c char or @c wchar_t. + */ +_LIBCPP_HIDE_FROM_ABI inline string __determine_grouping(ptrdiff_t __size, const string& __grouping) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__grouping.empty() && __size > __grouping[0], + "The slow grouping formatting is used while there will be no " + "separators written"); + string __r; + auto __end = __grouping.end() - 1; + auto __ptr = __grouping.begin(); + + while (true) { + __size -= *__ptr; + if (__size > 0) + __r.push_back(*__ptr); + else { + // __size <= 0 so the value pushed will be <= *__ptr. + __r.push_back(*__ptr + __size); + return __r; + } + + // Proceed to the next group. + if (__ptr != __end) { + do { + ++__ptr; + // Skip grouping with a width of 0. + } while (*__ptr == 0 && __ptr != __end); + } + } + + __libcpp_unreachable(); +} + +// +// Char +// + +template <__fmt_char_type _CharT> +_LIBCPP_HIDE_FROM_ABI auto __format_char( + integral auto __value, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_CharT> __specs) -> decltype(__out_it) { + using _Tp = decltype(__value); + if constexpr (!same_as<_CharT, _Tp>) { + // cmp_less and cmp_greater can't be used for character types. + if constexpr (signed_integral<_CharT> == signed_integral<_Tp>) { + if (__value < numeric_limits<_CharT>::min() || __value > numeric_limits<_CharT>::max()) + std::__throw_format_error("Integral value outside the range of the char type"); + } else if constexpr (signed_integral<_CharT>) { + // _CharT is signed _Tp is unsigned + if (__value > static_cast>(numeric_limits<_CharT>::max())) + std::__throw_format_error("Integral value outside the range of the char type"); + } else { + // _CharT is unsigned _Tp is signed + if (__value < 0 || static_cast>(__value) > numeric_limits<_CharT>::max()) + std::__throw_format_error("Integral value outside the range of the char type"); + } + } + + const auto __c = static_cast<_CharT>(__value); + return __formatter::__write(_VSTD::addressof(__c), _VSTD::addressof(__c) + 1, _VSTD::move(__out_it), __specs); +} + +// +// Integer +// + +/** Wrapper around @ref to_chars, returning the output pointer. */ +template +_LIBCPP_HIDE_FROM_ABI char* __to_buffer(char* __first, char* __last, _Tp __value, int __base) { + // TODO FMT Evaluate code overhead due to not calling the internal function + // directly. (Should be zero overhead.) + to_chars_result __r = _VSTD::to_chars(__first, __last, __value, __base); + _LIBCPP_ASSERT_UNCATEGORIZED(__r.ec == errc(0), "Internal buffer too small"); + return __r.ptr; +} + +/** + * Helper to determine the buffer size to output a integer in Base @em x. + * + * There are several overloads for the supported bases. The function uses the + * base as template argument so it can be used in a constant expression. + */ +template +consteval size_t __buffer_size() noexcept + requires(_Base == 2) +{ + return numeric_limits<_Tp>::digits // The number of binary digits. + + 2 // Reserve space for the '0[Bb]' prefix. + + 1; // Reserve space for the sign. +} + +template +consteval size_t __buffer_size() noexcept + requires(_Base == 8) +{ + return numeric_limits<_Tp>::digits // The number of binary digits. + / 3 // Adjust to octal. + + 1 // Turn floor to ceil. + + 1 // Reserve space for the '0' prefix. + + 1; // Reserve space for the sign. +} + +template +consteval size_t __buffer_size() noexcept + requires(_Base == 10) +{ + return numeric_limits<_Tp>::digits10 // The floored value. + + 1 // Turn floor to ceil. + + 1; // Reserve space for the sign. +} + +template +consteval size_t __buffer_size() noexcept + requires(_Base == 16) +{ + return numeric_limits<_Tp>::digits // The number of binary digits. + / 4 // Adjust to hexadecimal. + + 2 // Reserve space for the '0[Xx]' prefix. + + 1; // Reserve space for the sign. +} + +template +_LIBCPP_HIDE_FROM_ABI _OutIt __write_using_decimal_separators(_OutIt __out_it, const char* __begin, const char* __first, + const char* __last, string&& __grouping, _CharT __sep, + __format_spec::__parsed_specifications<_CharT> __specs) { + int __size = (__first - __begin) + // [sign][prefix] + (__last - __first) + // data + (__grouping.size() - 1); // number of separator characters + + __padding_size_result __padding = {0, 0}; + if (__specs.__alignment_ == __format_spec::__alignment::__zero_padding) { + // Write [sign][prefix]. + __out_it = __formatter::__copy(__begin, __first, _VSTD::move(__out_it)); + + if (__specs.__width_ > __size) { + // Write zero padding. + __padding.__before_ = __specs.__width_ - __size; + __out_it = __formatter::__fill(_VSTD::move(__out_it), __specs.__width_ - __size, _CharT('0')); + } + } else { + if (__specs.__width_ > __size) { + // Determine padding and write padding. + __padding = __formatter::__padding_size(__size, __specs.__width_, __specs.__alignment_); + + __out_it = __formatter::__fill(_VSTD::move(__out_it), __padding.__before_, __specs.__fill_); + } + // Write [sign][prefix]. + __out_it = __formatter::__copy(__begin, __first, _VSTD::move(__out_it)); + } + + auto __r = __grouping.rbegin(); + auto __e = __grouping.rend() - 1; + _LIBCPP_ASSERT_UNCATEGORIZED(__r != __e, "The slow grouping formatting is used while " + "there will be no separators written."); + // The output is divided in small groups of numbers to write: + // - A group before the first separator. + // - A separator and a group, repeated for the number of separators. + // - A group after the last separator. + // This loop achieves that process by testing the termination condition + // midway in the loop. + // + // TODO FMT This loop evaluates the loop invariant `__parser.__type != + // _Flags::_Type::__hexadecimal_upper_case` for every iteration. (This test + // happens in the __write call.) Benchmark whether making two loops and + // hoisting the invariant is worth the effort. + while (true) { + if (__specs.__std_.__type_ == __format_spec::__type::__hexadecimal_upper_case) { + __last = __first + *__r; + __out_it = __formatter::__transform(__first, __last, _VSTD::move(__out_it), __hex_to_upper); + __first = __last; + } else { + __out_it = __formatter::__copy(__first, *__r, _VSTD::move(__out_it)); + __first += *__r; + } + + if (__r == __e) + break; + + ++__r; + *__out_it++ = __sep; + } + + return __formatter::__fill(_VSTD::move(__out_it), __padding.__after_, __specs.__fill_); +} + + + +template +_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator __format_integer( + _Tp __value, + _FormatContext& __ctx, + __format_spec::__parsed_specifications<_CharT> __specs, + bool __negative, + char* __begin, + char* __end, + const char* __prefix, + int __base) { + char* __first = __formatter::__insert_sign(__begin, __negative, __specs.__std_.__sign_); + if (__specs.__std_.__alternate_form_ && __prefix) + while (*__prefix) + *__first++ = *__prefix++; + + char* __last = __formatter::__to_buffer(__first, __end, __value, __base); + +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + if (__specs.__std_.__locale_specific_form_) { + const auto& __np = std::use_facet>(__ctx.locale()); + string __grouping = __np.grouping(); + ptrdiff_t __size = __last - __first; + // Writing the grouped form has more overhead than the normal output + // routines. If there will be no separators written the locale-specific + // form is identical to the normal routine. Test whether to grouped form + // is required. + if (!__grouping.empty() && __size > __grouping[0]) + return __formatter::__write_using_decimal_separators( + __ctx.out(), + __begin, + __first, + __last, + __formatter::__determine_grouping(__size, __grouping), + __np.thousands_sep(), + __specs); + } +# endif + auto __out_it = __ctx.out(); + if (__specs.__alignment_ != __format_spec::__alignment::__zero_padding) + __first = __begin; + else { + // __buf contains [sign][prefix]data + // ^ location of __first + // The zero padding is done like: + // - Write [sign][prefix] + // - Write data right aligned with '0' as fill character. + __out_it = __formatter::__copy(__begin, __first, _VSTD::move(__out_it)); + __specs.__alignment_ = __format_spec::__alignment::__right; + __specs.__fill_.__data[0] = _CharT('0'); + int32_t __size = __first - __begin; + + __specs.__width_ -= _VSTD::min(__size, __specs.__width_); + } + + if (__specs.__std_.__type_ != __format_spec::__type::__hexadecimal_upper_case) [[likely]] + return __formatter::__write(__first, __last, __ctx.out(), __specs); + + return __formatter::__write_transformed(__first, __last, __ctx.out(), __specs, __formatter::__hex_to_upper); +} + +template +_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator +__format_integer(_Tp __value, + _FormatContext& __ctx, + __format_spec::__parsed_specifications<_CharT> __specs, + bool __negative = false) { + switch (__specs.__std_.__type_) { + case __format_spec::__type::__binary_lower_case: { + array()> __array; + return __formatter::__format_integer(__value, __ctx, __specs, __negative, __array.begin(), __array.end(), "0b", 2); + } + case __format_spec::__type::__binary_upper_case: { + array()> __array; + return __formatter::__format_integer(__value, __ctx, __specs, __negative, __array.begin(), __array.end(), "0B", 2); + } + case __format_spec::__type::__octal: { + // Octal is special; if __value == 0 there's no prefix. + array()> __array; + return __formatter::__format_integer( + __value, __ctx, __specs, __negative, __array.begin(), __array.end(), __value != 0 ? "0" : nullptr, 8); + } + case __format_spec::__type::__default: + case __format_spec::__type::__decimal: { + array()> __array; + return __formatter::__format_integer( + __value, __ctx, __specs, __negative, __array.begin(), __array.end(), nullptr, 10); + } + case __format_spec::__type::__hexadecimal_lower_case: { + array()> __array; + return __formatter::__format_integer(__value, __ctx, __specs, __negative, __array.begin(), __array.end(), "0x", 16); + } + case __format_spec::__type::__hexadecimal_upper_case: { + array()> __array; + return __formatter::__format_integer(__value, __ctx, __specs, __negative, __array.begin(), __array.end(), "0X", 16); + } + default: + _LIBCPP_ASSERT_UNCATEGORIZED(false, "The parse function should have validated the type"); + __libcpp_unreachable(); + } +} + +template +_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator +__format_integer(_Tp __value, _FormatContext& __ctx, __format_spec::__parsed_specifications<_CharT> __specs) { + // Depending on the std-format-spec string the sign and the value + // might not be outputted together: + // - alternate form may insert a prefix string. + // - zero-padding may insert additional '0' characters. + // Therefore the value is processed as a positive unsigned value. + // The function @ref __insert_sign will a '-' when the value was negative. + auto __r = std::__to_unsigned_like(__value); + bool __negative = __value < 0; + if (__negative) + __r = std::__complement(__r); + + return __formatter::__format_integer(__r, __ctx, __specs, __negative); +} + +// +// Formatter arithmetic (bool) +// + +template +struct _LIBCPP_TEMPLATE_VIS __bool_strings; + +template <> +struct _LIBCPP_TEMPLATE_VIS __bool_strings { + static constexpr string_view __true{"true"}; + static constexpr string_view __false{"false"}; +}; + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <> +struct _LIBCPP_TEMPLATE_VIS __bool_strings { + static constexpr wstring_view __true{L"true"}; + static constexpr wstring_view __false{L"false"}; +}; +# endif + +template +_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator +__format_bool(bool __value, _FormatContext& __ctx, __format_spec::__parsed_specifications<_CharT> __specs) { +# ifndef _LIBCPP_HAS_NO_LOCALIZATION + if (__specs.__std_.__locale_specific_form_) { + const auto& __np = std::use_facet>(__ctx.locale()); + basic_string<_CharT> __str = __value ? __np.truename() : __np.falsename(); + return __formatter::__write_string_no_precision(basic_string_view<_CharT>{__str}, __ctx.out(), __specs); + } +# endif + basic_string_view<_CharT> __str = + __value ? __formatter::__bool_strings<_CharT>::__true : __formatter::__bool_strings<_CharT>::__false; + return __formatter::__write(__str.begin(), __str.end(), __ctx.out(), __specs); +} + +} // namespace __formatter + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FORMAT_FORMATTER_INTEGRAL_H diff --git a/lib/libcxx/include/__format/formatter_output.h b/lib/libcxx/include/__format/formatter_output.h new file mode 100644 index 0000000..072305b --- /dev/null +++ b/lib/libcxx/include/__format/formatter_output.h @@ -0,0 +1,320 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_OUTPUT_H +#define _LIBCPP___FORMAT_FORMATTER_OUTPUT_H + +#include <__algorithm/ranges_copy.h> +#include <__algorithm/ranges_fill_n.h> +#include <__algorithm/ranges_transform.h> +#include <__bit/countl.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/buffer.h> +#include <__format/concepts.h> +#include <__format/formatter.h> +#include <__format/parser_std_format_spec.h> +#include <__format/unicode.h> +#include <__iterator/back_insert_iterator.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> // iter_value_t +#include <__memory/addressof.h> +#include <__utility/move.h> +#include <__utility/unreachable.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __formatter { + +_LIBCPP_HIDE_FROM_ABI constexpr char __hex_to_upper(char __c) { + switch (__c) { + case 'a': + return 'A'; + case 'b': + return 'B'; + case 'c': + return 'C'; + case 'd': + return 'D'; + case 'e': + return 'E'; + case 'f': + return 'F'; + } + return __c; +} + +struct _LIBCPP_EXPORTED_FROM_ABI __padding_size_result { + size_t __before_; + size_t __after_; +}; + +_LIBCPP_HIDE_FROM_ABI constexpr __padding_size_result +__padding_size(size_t __size, size_t __width, __format_spec::__alignment __align) { + _LIBCPP_ASSERT_UNCATEGORIZED(__width > __size, "don't call this function when no padding is required"); + _LIBCPP_ASSERT_UNCATEGORIZED( + __align != __format_spec::__alignment::__zero_padding, "the caller should have handled the zero-padding"); + + size_t __fill = __width - __size; + switch (__align) { + case __format_spec::__alignment::__zero_padding: + __libcpp_unreachable(); + + case __format_spec::__alignment::__left: + return {0, __fill}; + + case __format_spec::__alignment::__center: { + // The extra padding is divided per [format.string.std]/3 + // __before = floor(__fill, 2); + // __after = ceil(__fill, 2); + size_t __before = __fill / 2; + size_t __after = __fill - __before; + return {__before, __after}; + } + case __format_spec::__alignment::__default: + case __format_spec::__alignment::__right: + return {__fill, 0}; + } + __libcpp_unreachable(); +} + +/// Copy wrapper. +/// +/// This uses a "mass output function" of __format::__output_buffer when possible. +template <__fmt_char_type _CharT, __fmt_char_type _OutCharT = _CharT> +_LIBCPP_HIDE_FROM_ABI auto __copy(basic_string_view<_CharT> __str, output_iterator auto __out_it) + -> decltype(__out_it) { + if constexpr (_VSTD::same_as>>) { + __out_it.__get_container()->__copy(__str); + return __out_it; + } else if constexpr (_VSTD::same_as::__iterator>) { + __out_it.__buffer_->__copy(__str); + return __out_it; + } else { + return std::ranges::copy(__str, _VSTD::move(__out_it)).out; + } +} + +template <__fmt_char_type _CharT, __fmt_char_type _OutCharT = _CharT> +_LIBCPP_HIDE_FROM_ABI auto +__copy(const _CharT* __first, const _CharT* __last, output_iterator auto __out_it) + -> decltype(__out_it) { + return __formatter::__copy(basic_string_view{__first, __last}, _VSTD::move(__out_it)); +} + +template <__fmt_char_type _CharT, __fmt_char_type _OutCharT = _CharT> +_LIBCPP_HIDE_FROM_ABI auto __copy(const _CharT* __first, size_t __n, output_iterator auto __out_it) + -> decltype(__out_it) { + return __formatter::__copy(basic_string_view{__first, __n}, _VSTD::move(__out_it)); +} + +/// Transform wrapper. +/// +/// This uses a "mass output function" of __format::__output_buffer when possible. +template <__fmt_char_type _CharT, __fmt_char_type _OutCharT = _CharT, class _UnaryOperation> +_LIBCPP_HIDE_FROM_ABI auto +__transform(const _CharT* __first, + const _CharT* __last, + output_iterator auto __out_it, + _UnaryOperation __operation) -> decltype(__out_it) { + if constexpr (_VSTD::same_as>>) { + __out_it.__get_container()->__transform(__first, __last, _VSTD::move(__operation)); + return __out_it; + } else if constexpr (_VSTD::same_as::__iterator>) { + __out_it.__buffer_->__transform(__first, __last, _VSTD::move(__operation)); + return __out_it; + } else { + return std::ranges::transform(__first, __last, _VSTD::move(__out_it), __operation).out; + } +} + +/// Fill wrapper. +/// +/// This uses a "mass output function" of __format::__output_buffer when possible. +template <__fmt_char_type _CharT, output_iterator _OutIt> +_LIBCPP_HIDE_FROM_ABI _OutIt __fill(_OutIt __out_it, size_t __n, _CharT __value) { + if constexpr (_VSTD::same_as>>) { + __out_it.__get_container()->__fill(__n, __value); + return __out_it; + } else if constexpr (_VSTD::same_as::__iterator>) { + __out_it.__buffer_->__fill(__n, __value); + return __out_it; + } else { + return std::ranges::fill_n(_VSTD::move(__out_it), __n, __value); + } +} + +# ifndef _LIBCPP_HAS_NO_UNICODE +template <__fmt_char_type _CharT, output_iterator _OutIt> + requires(same_as<_CharT, char>) +_LIBCPP_HIDE_FROM_ABI _OutIt __fill(_OutIt __out_it, size_t __n, __format_spec::__code_point<_CharT> __value) { + std::size_t __bytes = std::countl_one(static_cast(__value.__data[0])); + if (__bytes == 0) + return __formatter::__fill(std::move(__out_it), __n, __value.__data[0]); + + for (size_t __i = 0; __i < __n; ++__i) + __out_it = __formatter::__copy( + std::addressof(__value.__data[0]), std::addressof(__value.__data[0]) + __bytes, std::move(__out_it)); + return __out_it; +} + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <__fmt_char_type _CharT, output_iterator _OutIt> + requires(same_as<_CharT, wchar_t> && sizeof(wchar_t) == 2) +_LIBCPP_HIDE_FROM_ABI _OutIt __fill(_OutIt __out_it, size_t __n, __format_spec::__code_point<_CharT> __value) { + if (!__unicode::__is_high_surrogate(__value.__data[0])) + return __formatter::__fill(std::move(__out_it), __n, __value.__data[0]); + + for (size_t __i = 0; __i < __n; ++__i) + __out_it = __formatter::__copy( + std::addressof(__value.__data[0]), std::addressof(__value.__data[0]) + 2, std::move(__out_it)); + return __out_it; +} + +template <__fmt_char_type _CharT, output_iterator _OutIt> + requires(same_as<_CharT, wchar_t> && sizeof(wchar_t) == 4) +_LIBCPP_HIDE_FROM_ABI _OutIt __fill(_OutIt __out_it, size_t __n, __format_spec::__code_point<_CharT> __value) { + return __formatter::__fill(std::move(__out_it), __n, __value.__data[0]); +} +# endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS +# else // _LIBCPP_HAS_NO_UNICODE +template <__fmt_char_type _CharT, output_iterator _OutIt> +_LIBCPP_HIDE_FROM_ABI _OutIt __fill(_OutIt __out_it, size_t __n, __format_spec::__code_point<_CharT> __value) { + return __formatter::__fill(std::move(__out_it), __n, __value.__data[0]); +} +# endif // _LIBCPP_HAS_NO_UNICODE + +/// Writes the input to the output with the required padding. +/// +/// Since the output column width is specified the function can be used for +/// ASCII and Unicode output. +/// +/// \pre \a __size <= \a __width. Using this function when this pre-condition +/// doesn't hold incurs an unwanted overhead. +/// +/// \param __str The string to write. +/// \param __out_it The output iterator to write to. +/// \param __specs The parsed formatting specifications. +/// \param __size The (estimated) output column width. When the elements +/// to be written are ASCII the following condition holds +/// \a __size == \a __last - \a __first. +/// +/// \returns An iterator pointing beyond the last element written. +/// +/// \note The type of the elements in range [\a __first, \a __last) can differ +/// from the type of \a __specs. Integer output uses \c std::to_chars for its +/// conversion, which means the [\a __first, \a __last) always contains elements +/// of the type \c char. +template +_LIBCPP_HIDE_FROM_ABI auto +__write(basic_string_view<_CharT> __str, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_ParserCharT> __specs, + ptrdiff_t __size) -> decltype(__out_it) { + if (__size >= __specs.__width_) + return __formatter::__copy(__str, _VSTD::move(__out_it)); + + __padding_size_result __padding = __formatter::__padding_size(__size, __specs.__width_, __specs.__std_.__alignment_); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __padding.__before_, __specs.__fill_); + __out_it = __formatter::__copy(__str, _VSTD::move(__out_it)); + return __formatter::__fill(_VSTD::move(__out_it), __padding.__after_, __specs.__fill_); +} + +template +_LIBCPP_HIDE_FROM_ABI auto +__write(_Iterator __first, + _Iterator __last, + output_iterator&> auto __out_it, + __format_spec::__parsed_specifications<_ParserCharT> __specs, + ptrdiff_t __size) -> decltype(__out_it) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "Not a valid range"); + return __formatter::__write(basic_string_view{__first, __last}, _VSTD::move(__out_it), __specs, __size); +} + +/// \overload +/// +/// Calls the function above where \a __size = \a __last - \a __first. +template +_LIBCPP_HIDE_FROM_ABI auto +__write(_Iterator __first, + _Iterator __last, + output_iterator&> auto __out_it, + __format_spec::__parsed_specifications<_ParserCharT> __specs) -> decltype(__out_it) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "Not a valid range"); + return __formatter::__write(__first, __last, _VSTD::move(__out_it), __specs, __last - __first); +} + +template +_LIBCPP_HIDE_FROM_ABI auto __write_transformed(const _CharT* __first, const _CharT* __last, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_ParserCharT> __specs, + _UnaryOperation __op) -> decltype(__out_it) { + _LIBCPP_ASSERT_UNCATEGORIZED(__first <= __last, "Not a valid range"); + + ptrdiff_t __size = __last - __first; + if (__size >= __specs.__width_) + return __formatter::__transform(__first, __last, _VSTD::move(__out_it), __op); + + __padding_size_result __padding = __formatter::__padding_size(__size, __specs.__width_, __specs.__alignment_); + __out_it = __formatter::__fill(_VSTD::move(__out_it), __padding.__before_, __specs.__fill_); + __out_it = __formatter::__transform(__first, __last, _VSTD::move(__out_it), __op); + return __formatter::__fill(_VSTD::move(__out_it), __padding.__after_, __specs.__fill_); +} + +/// Writes a string using format's width estimation algorithm. +/// +/// \pre !__specs.__has_precision() +/// +/// \note When \c _LIBCPP_HAS_NO_UNICODE is defined the function assumes the +/// input is ASCII. +template +_LIBCPP_HIDE_FROM_ABI auto __write_string_no_precision( + basic_string_view<_CharT> __str, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_CharT> __specs) -> decltype(__out_it) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__specs.__has_precision(), "use __write_string"); + + // No padding -> copy the string + if (!__specs.__has_width()) + return __formatter::__copy(__str, _VSTD::move(__out_it)); + + // Note when the estimated width is larger than size there's no padding. So + // there's no reason to get the real size when the estimate is larger than or + // equal to the minimum field width. + size_t __size = + __format_spec::__estimate_column_width(__str, __specs.__width_, __format_spec::__column_width_rounding::__up) + .__width_; + return __formatter::__write(__str, _VSTD::move(__out_it), __specs, __size); +} + +template +_LIBCPP_HIDE_FROM_ABI int __truncate(basic_string_view<_CharT>& __str, int __precision) { + __format_spec::__column_width_result __result = + __format_spec::__estimate_column_width(__str, __precision, __format_spec::__column_width_rounding::__down); + __str = basic_string_view<_CharT>{__str.begin(), __result.__last_}; + return __result.__width_; +} + +} // namespace __formatter + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_OUTPUT_H diff --git a/lib/libcxx/include/__format/formatter_pointer.h b/lib/libcxx/include/__format/formatter_pointer.h new file mode 100644 index 0000000..a221261 --- /dev/null +++ b/lib/libcxx/include/__format/formatter_pointer.h @@ -0,0 +1,76 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_POINTER_H +#define _LIBCPP___FORMAT_FORMATTER_POINTER_H + +#include <__availability> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_integral.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS __formatter_pointer { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_pointer); + __format_spec::__process_display_type_pointer(__parser_.__type_, "a pointer"); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const void* __ptr, _FormatContext& __ctx) const { + __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); + __specs.__std_.__alternate_form_ = true; + __specs.__std_.__type_ = + __specs.__std_.__type_ == __format_spec::__type::__pointer_upper_case + ? __format_spec::__type::__hexadecimal_upper_case + : __format_spec::__type::__hexadecimal_lower_case; + + return __formatter::__format_integer(reinterpret_cast(__ptr), __ctx, __specs); + } + + __format_spec::__parser<_CharT> __parser_; +}; + +// [format.formatter.spec]/2.4 +// For each charT, the pointer type specializations template<> +// - struct formatter; +// - template<> struct formatter; +// - template<> struct formatter; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_pointer<_CharT> {}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter : public __formatter_pointer<_CharT> { +}; +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_pointer<_CharT> {}; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H diff --git a/lib/libcxx/include/__format/formatter_string.h b/lib/libcxx/include/__format/formatter_string.h new file mode 100644 index 0000000..ba64a64 --- /dev/null +++ b/lib/libcxx/include/__format/formatter_string.h @@ -0,0 +1,156 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_STRING_H +#define _LIBCPP___FORMAT_FORMATTER_STRING_H + +#include <__availability> +#include <__config> +#include <__format/concepts.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__format/write_escaped.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS __formatter_string { +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_string); + __format_spec::__process_display_type_string(__parser_.__type_); + return __result; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(basic_string_view<_CharT> __str, _FormatContext& __ctx) const { +# if _LIBCPP_STD_VER >= 23 + if (__parser_.__type_ == __format_spec::__type::__debug) + return __formatter::__format_escaped_string(__str, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); +# endif + + return __formatter::__write_string(__str, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); + } + +# if _LIBCPP_STD_VER >= 23 + _LIBCPP_HIDE_FROM_ABI constexpr void set_debug_format() { __parser_.__type_ = __format_spec::__type::__debug; } +# endif + + __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__left}; +}; + +// Formatter const char*. +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter + : public __formatter_string<_CharT> { + using _Base = __formatter_string<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const _CharT* __str, _FormatContext& __ctx) const { + _LIBCPP_ASSERT_UNCATEGORIZED(__str, "The basic_format_arg constructor should have " + "prevented an invalid pointer."); + + __format_spec::__parsed_specifications<_CharT> __specs = _Base::__parser_.__get_parsed_std_specifications(__ctx); +# if _LIBCPP_STD_VER >= 23 + if (_Base::__parser_.__type_ == __format_spec::__type::__debug) + return __formatter::__format_escaped_string(basic_string_view<_CharT>{__str}, __ctx.out(), __specs); +# endif + + // When using a center or right alignment and the width option the length + // of __str must be known to add the padding upfront. This case is handled + // by the base class by converting the argument to a basic_string_view. + // + // When using left alignment and the width option the padding is added + // after outputting __str so the length can be determined while outputting + // __str. The same holds true for the precision, during outputting __str it + // can be validated whether the precision threshold has been reached. For + // now these optimizations aren't implemented. Instead the base class + // handles these options. + // TODO FMT Implement these improvements. + if (__specs.__has_width() || __specs.__has_precision()) + return __formatter::__write_string(basic_string_view<_CharT>{__str}, __ctx.out(), __specs); + + // No formatting required, copy the string to the output. + auto __out_it = __ctx.out(); + while (*__str) + *__out_it++ = *__str++; + return __out_it; + } +}; + +// Formatter char*. +template <__fmt_char_type _CharT> +struct _LIBCPP_TEMPLATE_VIS formatter<_CharT*, _CharT> + : public formatter { + using _Base = formatter; + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_CharT* __str, _FormatContext& __ctx) const { + return _Base::format(__str, __ctx); + } +}; + +// Formatter char[]. +template <__fmt_char_type _CharT, size_t _Size> +struct _LIBCPP_TEMPLATE_VIS formatter<_CharT[_Size], _CharT> + : public __formatter_string<_CharT> { + using _Base = __formatter_string<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(const _CharT (&__str)[_Size], _FormatContext& __ctx) const { + return _Base::format(basic_string_view<_CharT>(__str, _Size), __ctx); + } +}; + +// Formatter std::string. +template <__fmt_char_type _CharT, class _Traits, class _Allocator> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_string<_CharT> { + using _Base = __formatter_string<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(const basic_string<_CharT, _Traits, _Allocator>& __str, _FormatContext& __ctx) const { + // Drop _Traits and _Allocator to have one std::basic_string formatter. + return _Base::format(basic_string_view<_CharT>(__str.data(), __str.size()), __ctx); + } +}; + +// Formatter std::string_view. +template <__fmt_char_type _CharT, class _Traits> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_string<_CharT> { + using _Base = __formatter_string<_CharT>; + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(basic_string_view<_CharT, _Traits> __str, _FormatContext& __ctx) const { + // Drop _Traits to have one std::basic_string_view formatter. + return _Base::format(basic_string_view<_CharT>(__str.data(), __str.size()), __ctx); + } +}; + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_STRING_H diff --git a/lib/libcxx/include/__format/formatter_tuple.h b/lib/libcxx/include/__format/formatter_tuple.h new file mode 100644 index 0000000..030097a --- /dev/null +++ b/lib/libcxx/include/__format/formatter_tuple.h @@ -0,0 +1,150 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_FORMATTER_TUPLE_H +#define _LIBCPP___FORMAT_FORMATTER_TUPLE_H + +#include <__algorithm/ranges_copy.h> +#include <__chrono/statically_widen.h> +#include <__config> +#include <__format/buffer.h> +#include <__format/concepts.h> +#include <__format/format_context.h> +#include <__format/format_error.h> +#include <__format/format_parse_context.h> +#include <__format/formatter.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/integer_sequence.h> +#include <__utility/pair.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +template <__fmt_char_type _CharT, class _Tuple, formattable<_CharT>... _Args> +struct _LIBCPP_TEMPLATE_VIS __formatter_tuple { + _LIBCPP_HIDE_FROM_ABI constexpr void set_separator(basic_string_view<_CharT> __separator) noexcept { + __separator_ = __separator; + } + _LIBCPP_HIDE_FROM_ABI constexpr void + set_brackets(basic_string_view<_CharT> __opening_bracket, basic_string_view<_CharT> __closing_bracket) noexcept { + __opening_bracket_ = __opening_bracket; + __closing_bracket_ = __closing_bracket; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + auto __begin = __parser_.__parse(__ctx, __format_spec::__fields_tuple); + + auto __end = __ctx.end(); + // Note 'n' is part of the type here + if (__parser_.__clear_brackets_) + set_brackets({}, {}); + else if (__begin != __end && *__begin == _CharT('m')) { + if constexpr (sizeof...(_Args) == 2) { + set_separator(_LIBCPP_STATICALLY_WIDEN(_CharT, ": ")); + set_brackets({}, {}); + ++__begin; + } else + std::__throw_format_error("Type m requires a pair or a tuple with two elements"); + } + + if (__begin != __end && *__begin != _CharT('}')) + std::__throw_format_error("The format specifier should consume the input or end with a '}'"); + + __ctx.advance_to(__begin); + + // [format.tuple]/7 + // ... For each element e in underlying_, if e.set_debug_format() + // is a valid expression, calls e.set_debug_format(). + std::__for_each_index_sequence(make_index_sequence(), [&] { + auto& __formatter = std::get<_Index>(__underlying_); + __formatter.parse(__ctx); + // Unlike the range_formatter we don't guard against evil parsers. Since + // this format-spec never has a format-spec for the underlying type + // adding the test would give additional overhead. + std::__set_debug_format(__formatter); + }); + + return __begin; + } + + template + typename _FormatContext::iterator _LIBCPP_HIDE_FROM_ABI + format(conditional_t<(formattable && ...), const _Tuple&, _Tuple&> __tuple, + _FormatContext& __ctx) const { + __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); + + if (!__specs.__has_width()) + return __format_tuple(__tuple, __ctx); + + // The size of the buffer needed is: + // - open bracket characters + // - close bracket character + // - n elements where every element may have a different size + // - (n -1) separators + // The size of the element is hard to predict, knowing the type helps but + // it depends on the format-spec. As an initial estimate we guess 6 + // characters. + // Typically both brackets are 1 character and the separator is 2 + // characters. Which means there will be + // (n - 1) * 2 + 1 + 1 = n * 2 character + // So estimate 8 times the range size as buffer. + __format::__retarget_buffer<_CharT> __buffer{8 * tuple_size_v<_Tuple>}; + basic_format_context::__iterator, _CharT> __c{ + __buffer.__make_output_iterator(), __ctx}; + + __format_tuple(__tuple, __c); + + return __formatter::__write_string_no_precision(basic_string_view{__buffer.__view()}, __ctx.out(), __specs); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator __format_tuple(auto&& __tuple, _FormatContext& __ctx) const { + __ctx.advance_to(std::ranges::copy(__opening_bracket_, __ctx.out()).out); + + std::__for_each_index_sequence(make_index_sequence(), [&] { + if constexpr (_Index) + __ctx.advance_to(std::ranges::copy(__separator_, __ctx.out()).out); + __ctx.advance_to(std::get<_Index>(__underlying_).format(std::get<_Index>(__tuple), __ctx)); + }); + + return std::ranges::copy(__closing_bracket_, __ctx.out()).out; + } + + __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__left}; + +private: + tuple, _CharT>...> __underlying_; + basic_string_view<_CharT> __separator_ = _LIBCPP_STATICALLY_WIDEN(_CharT, ", "); + basic_string_view<_CharT> __opening_bracket_ = _LIBCPP_STATICALLY_WIDEN(_CharT, "("); + basic_string_view<_CharT> __closing_bracket_ = _LIBCPP_STATICALLY_WIDEN(_CharT, ")"); +}; + +template <__fmt_char_type _CharT, formattable<_CharT>... _Args> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_tuple<_CharT, pair<_Args...>, _Args...> {}; + +template <__fmt_char_type _CharT, formattable<_CharT>... _Args> +struct _LIBCPP_TEMPLATE_VIS formatter, _CharT> + : public __formatter_tuple<_CharT, tuple<_Args...>, _Args...> {}; + +#endif //_LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_FORMATTER_TUPLE_H diff --git a/lib/libcxx/include/__format/parser_std_format_spec.h b/lib/libcxx/include/__format/parser_std_format_spec.h new file mode 100644 index 0000000..c01e586 --- /dev/null +++ b/lib/libcxx/include/__format/parser_std_format_spec.h @@ -0,0 +1,1175 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_PARSER_STD_FORMAT_SPEC_H +#define _LIBCPP___FORMAT_PARSER_STD_FORMAT_SPEC_H + +/// \file Contains the std-format-spec parser. +/// +/// Most of the code can be reused in the chrono-format-spec. +/// This header has some support for the chrono-format-spec since it doesn't +/// affect the std-format-spec. + +#include <__algorithm/copy_n.h> +#include <__algorithm/min.h> +#include <__assert> +#include <__concepts/arithmetic.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/format_arg.h> +#include <__format/format_error.h> +#include <__format/format_parse_context.h> +#include <__format/format_string.h> +#include <__format/unicode.h> +#include <__format/width_estimation_table.h> +#include <__iterator/concepts.h> +#include <__iterator/iterator_traits.h> // iter_value_t +#include <__memory/addressof.h> +#include <__type_traits/common_type.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__variant/monostate.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __format_spec { + +_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI inline void +__throw_invalid_option_format_error(const char* __id, const char* __option) { + std::__throw_format_error( + (string("The format specifier for ") + __id + " does not allow the " + __option + " option").c_str()); +} + +_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI inline void __throw_invalid_type_format_error(const char* __id) { + std::__throw_format_error( + (string("The type option contains an invalid value for ") + __id + " formatting argument").c_str()); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr __format::__parse_number_result<_Iterator> +__parse_arg_id(_Iterator __begin, _Iterator __end, _ParseContext& __ctx) { + using _CharT = iter_value_t<_Iterator>; + // This function is a wrapper to call the real parser. But it does the + // validation for the pre-conditions and post-conditions. + if (__begin == __end) + std::__throw_format_error("End of input while parsing an argument index"); + + __format::__parse_number_result __r = __format::__parse_arg_id(__begin, __end, __ctx); + + if (__r.__last == __end || *__r.__last != _CharT('}')) + std::__throw_format_error("The argument index is invalid"); + + ++__r.__last; + return __r; +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr uint32_t +__substitute_arg_id(basic_format_arg<_Context> __format_arg) { + // [format.string.std]/8 + // If the corresponding formatting argument is not of integral type... + // This wording allows char and bool too. LWG-3720 changes the wording to + // If the corresponding formatting argument is not of standard signed or + // unsigned integer type, + // This means the 128-bit will not be valid anymore. + // TODO FMT Verify this resolution is accepted and add a test to verify + // 128-bit integrals fail and switch to visit_format_arg. + return _VSTD::__visit_format_arg( + [](auto __arg) -> uint32_t { + using _Type = decltype(__arg); + if constexpr (same_as<_Type, monostate>) + std::__throw_format_error("The argument index value is too large for the number of arguments supplied"); + + // [format.string.std]/8 + // If { arg-idopt } is used in a width or precision, the value of the + // corresponding formatting argument is used in its place. If the + // corresponding formatting argument is not of standard signed or unsigned + // integer type, or its value is negative for precision or non-positive for + // width, an exception of type format_error is thrown. + // + // When an integral is used in a format function, it is stored as one of + // the types checked below. Other integral types are promoted. For example, + // a signed char is stored as an int. + if constexpr (same_as<_Type, int> || same_as<_Type, unsigned int> || // + same_as<_Type, long long> || same_as<_Type, unsigned long long>) { + if constexpr (signed_integral<_Type>) { + if (__arg < 0) + std::__throw_format_error("An argument index may not have a negative value"); + } + + using _CT = common_type_t<_Type, decltype(__format::__number_max)>; + if (static_cast<_CT>(__arg) > static_cast<_CT>(__format::__number_max)) + std::__throw_format_error("The value of the argument index exceeds its maximum value"); + + return __arg; + } else + std::__throw_format_error("Replacement argument isn't a standard signed or unsigned integer type"); + }, + __format_arg); +} + +/// These fields are a filter for which elements to parse. +/// +/// They default to false so when a new field is added it needs to be opted in +/// explicitly. +// TODO FMT Use an ABI tag for this struct. +struct __fields { + uint16_t __sign_ : 1 {false}; + uint16_t __alternate_form_ : 1 {false}; + uint16_t __zero_padding_ : 1 {false}; + uint16_t __precision_ : 1 {false}; + uint16_t __locale_specific_form_ : 1 {false}; + uint16_t __type_ : 1 {false}; + // Determines the valid values for fill. + // + // Originally the fill could be any character except { and }. Range-based + // formatters use the colon to mark the beginning of the + // underlying-format-spec. To avoid parsing ambiguities these formatter + // specializations prohibit the use of the colon as a fill character. + uint16_t __use_range_fill_ : 1 {false}; + uint16_t __clear_brackets_ : 1 {false}; + uint16_t __consume_all_ : 1 {false}; +}; + +// By not placing this constant in the formatter class it's not duplicated for +// char and wchar_t. +inline constexpr __fields __fields_bool{.__locale_specific_form_ = true, .__type_ = true, .__consume_all_ = true}; +inline constexpr __fields __fields_integral{ + .__sign_ = true, + .__alternate_form_ = true, + .__zero_padding_ = true, + .__locale_specific_form_ = true, + .__type_ = true, + .__consume_all_ = true}; +inline constexpr __fields __fields_floating_point{ + .__sign_ = true, + .__alternate_form_ = true, + .__zero_padding_ = true, + .__precision_ = true, + .__locale_specific_form_ = true, + .__type_ = true, + .__consume_all_ = true}; +inline constexpr __fields __fields_string{.__precision_ = true, .__type_ = true, .__consume_all_ = true}; +inline constexpr __fields __fields_pointer{.__zero_padding_ = true, .__type_ = true, .__consume_all_ = true}; + +# if _LIBCPP_STD_VER >= 23 +inline constexpr __fields __fields_tuple{.__use_range_fill_ = true, .__clear_brackets_ = true}; +inline constexpr __fields __fields_range{.__use_range_fill_ = true, .__clear_brackets_ = true}; +inline constexpr __fields __fields_fill_align_width{}; +# endif + +enum class _LIBCPP_ENUM_VIS __alignment : uint8_t { + /// No alignment is set in the format string. + __default, + __left, + __center, + __right, + __zero_padding +}; + +enum class _LIBCPP_ENUM_VIS __sign : uint8_t { + /// No sign is set in the format string. + /// + /// The sign isn't allowed for certain format-types. By using this value + /// it's possible to detect whether or not the user explicitly set the sign + /// flag. For formatting purposes it behaves the same as \ref __minus. + __default, + __minus, + __plus, + __space +}; + +enum class _LIBCPP_ENUM_VIS __type : uint8_t { + __default = 0, + __string, + __binary_lower_case, + __binary_upper_case, + __octal, + __decimal, + __hexadecimal_lower_case, + __hexadecimal_upper_case, + __pointer_lower_case, + __pointer_upper_case, + __char, + __hexfloat_lower_case, + __hexfloat_upper_case, + __scientific_lower_case, + __scientific_upper_case, + __fixed_lower_case, + __fixed_upper_case, + __general_lower_case, + __general_upper_case, + __debug +}; + +_LIBCPP_HIDE_FROM_ABI inline constexpr uint32_t __create_type_mask(__type __t) { + uint32_t __shift = static_cast(__t); + if (__shift == 0) + return 1; + + if (__shift > 31) + std::__throw_format_error("The type does not fit in the mask"); + + return 1 << __shift; +} + +inline constexpr uint32_t __type_mask_integer = + __create_type_mask(__type::__binary_lower_case) | // + __create_type_mask(__type::__binary_upper_case) | // + __create_type_mask(__type::__decimal) | // + __create_type_mask(__type::__octal) | // + __create_type_mask(__type::__hexadecimal_lower_case) | // + __create_type_mask(__type::__hexadecimal_upper_case); + +struct __std { + __alignment __alignment_ : 3; + __sign __sign_ : 2; + bool __alternate_form_ : 1; + bool __locale_specific_form_ : 1; + __type __type_; +}; + +struct __chrono { + __alignment __alignment_ : 3; + bool __locale_specific_form_ : 1; + bool __hour_ : 1; + bool __weekday_name_ : 1; + bool __weekday_ : 1; + bool __day_of_year_ : 1; + bool __week_of_year_ : 1; + bool __month_name_ : 1; +}; + +// The fill UCS scalar value. +// +// This is always an array, with 1, 2, or 4 elements. +// The size of the data structure is always 32-bits. +template +struct __code_point; + +template <> +struct __code_point { + char __data[4] = {' '}; +}; + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <> +struct __code_point { + wchar_t __data[4 / sizeof(wchar_t)] = {L' '}; +}; +# endif + +/// Contains the parsed formatting specifications. +/// +/// This contains information for both the std-format-spec and the +/// chrono-format-spec. This results in some unused members for both +/// specifications. However these unused members don't increase the size +/// of the structure. +/// +/// This struct doesn't cross ABI boundaries so its layout doesn't need to be +/// kept stable. +template +struct __parsed_specifications { + union { + // The field __alignment_ is the first element in __std_ and __chrono_. + // This allows the code to always inspect this value regards which member + // of the union is the active member [class.union.general]/2. + // + // This is needed since the generic output routines handle the alignment of + // the output. + __alignment __alignment_ : 3; + __std __std_; + __chrono __chrono_; + }; + + /// The requested width. + /// + /// When the format-spec used an arg-id for this field it has already been + /// replaced with the value of that arg-id. + int32_t __width_; + + /// The requested precision. + /// + /// When the format-spec used an arg-id for this field it has already been + /// replaced with the value of that arg-id. + int32_t __precision_; + + __code_point<_CharT> __fill_; + + _LIBCPP_HIDE_FROM_ABI constexpr bool __has_width() const { return __width_ > 0; } + + _LIBCPP_HIDE_FROM_ABI constexpr bool __has_precision() const { return __precision_ >= 0; } +}; + +// Validate the struct is small and cheap to copy since the struct is passed by +// value in formatting functions. +static_assert(sizeof(__parsed_specifications) == 16); +static_assert(is_trivially_copyable_v<__parsed_specifications>); +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +static_assert(sizeof(__parsed_specifications) == 16); +static_assert(is_trivially_copyable_v<__parsed_specifications>); +# endif + +/// The parser for the std-format-spec. +/// +/// Note this class is a member of std::formatter specializations. It's +/// expected developers will create their own formatter specializations that +/// inherit from the std::formatter specializations. This means this class +/// must be ABI stable. To aid the stability the unused bits in the class are +/// set to zero. That way they can be repurposed if a future revision of the +/// Standards adds new fields to std-format-spec. +template +class _LIBCPP_TEMPLATE_VIS __parser { +public: + // Parses the format specification. + // + // Depending on whether the parsing is done compile-time or run-time + // the method slightly differs. + // - Only parses a field when it is in the __fields. Accepting all + // fields and then validating the valid ones has a performance impact. + // This is faster but gives slighly worse error messages. + // - At compile-time when a field is not accepted the parser will still + // parse it and give an error when it's present. This gives a more + // accurate error. + // The idea is that most times the format instead of the vformat + // functions are used. In that case the error will be detected during + // compilation and there is no need to pay for the run-time overhead. + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator __parse(_ParseContext& __ctx, __fields __fields) { + auto __begin = __ctx.begin(); + auto __end = __ctx.end(); + if (__begin == __end) + return __begin; + + if (__parse_fill_align(__begin, __end, __fields.__use_range_fill_) && __begin == __end) + return __begin; + + if (__fields.__sign_) { + if (__parse_sign(__begin) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_sign(__begin)) { + std::__throw_format_error("The format specification does not allow the sign option"); + } + + if (__fields.__alternate_form_) { + if (__parse_alternate_form(__begin) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_alternate_form(__begin)) { + std::__throw_format_error("The format specifier does not allow the alternate form option"); + } + + if (__fields.__zero_padding_) { + if (__parse_zero_padding(__begin) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_zero_padding(__begin)) { + std::__throw_format_error("The format specifier does not allow the zero-padding option"); + } + + if (__parse_width(__begin, __end, __ctx) && __begin == __end) + return __begin; + + if (__fields.__precision_) { + if (__parse_precision(__begin, __end, __ctx) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_precision(__begin, __end, __ctx)) { + std::__throw_format_error("The format specifier does not allow the precision option"); + } + + if (__fields.__locale_specific_form_) { + if (__parse_locale_specific_form(__begin) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_locale_specific_form(__begin)) { + std::__throw_format_error("The format specifier does not allow the locale-specific form option"); + } + + if (__fields.__clear_brackets_) { + if (__parse_clear_brackets(__begin) && __begin == __end) + return __begin; + } else if (std::is_constant_evaluated() && __parse_clear_brackets(__begin)) { + std::__throw_format_error("The format specifier does not allow the n option"); + } + + if (__fields.__type_) + __parse_type(__begin); + + if (!__fields.__consume_all_) + return __begin; + + if (__begin != __end && *__begin != _CharT('}')) + std::__throw_format_error("The format specifier should consume the input or end with a '}'"); + + return __begin; + } + + // Validates the selected the parsed data. + // + // The valid fields in the parser may depend on the display type + // selected. But the type is the last optional field, so by the time + // it's known an option can't be used, it already has been parsed. + // This does the validation again. + // + // For example an integral may have a sign, zero-padding, or alternate + // form when the type option is not 'c'. So the generic approach is: + // + // typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); + // if (__parser.__type_ == __format_spec::__type::__char) { + // __parser.__validate((__format_spec::__fields_bool, "an integer"); + // ... // more char adjustments + // } else { + // ... // validate an integral type. + // } + // + // For some types all valid options need a second validation run, like + // boolean types. + // + // Depending on whether the validation is done at compile-time or + // run-time the error differs + // - run-time the exception is thrown and contains the type of field + // being validated. + // - at compile-time the line with `std::__throw_format_error` is shown + // in the output. In that case it's important for the error to be on one + // line. + // Note future versions of C++ may allow better compile-time error + // reporting. + _LIBCPP_HIDE_FROM_ABI constexpr void + __validate(__fields __fields, const char* __id, uint32_t __type_mask = -1) const { + if (!__fields.__sign_ && __sign_ != __sign::__default) { + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier does not allow the sign option"); + else + __format_spec::__throw_invalid_option_format_error(__id, "sign"); + } + + if (!__fields.__alternate_form_ && __alternate_form_) { + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier does not allow the alternate form option"); + else + __format_spec::__throw_invalid_option_format_error(__id, "alternate form"); + } + + if (!__fields.__zero_padding_ && __alignment_ == __alignment::__zero_padding) { + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier does not allow the zero-padding option"); + else + __format_spec::__throw_invalid_option_format_error(__id, "zero-padding"); + } + + if (!__fields.__precision_ && __precision_ != -1) { // Works both when the precision has a value or an arg-id. + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier does not allow the precision option"); + else + __format_spec::__throw_invalid_option_format_error(__id, "precision"); + } + + if (!__fields.__locale_specific_form_ && __locale_specific_form_) { + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier does not allow the locale-specific form option"); + else + __format_spec::__throw_invalid_option_format_error(__id, "locale-specific form"); + } + + if ((__create_type_mask(__type_) & __type_mask) == 0) { + if (std::is_constant_evaluated()) + std::__throw_format_error("The format specifier uses an invalid value for the type option"); + else + __format_spec::__throw_invalid_type_format_error(__id); + } + } + + /// \returns the `__parsed_specifications` with the resolved dynamic sizes.. + _LIBCPP_HIDE_FROM_ABI + __parsed_specifications<_CharT> __get_parsed_std_specifications(auto& __ctx) const { + return __parsed_specifications<_CharT>{ + .__std_ = __std{.__alignment_ = __alignment_, + .__sign_ = __sign_, + .__alternate_form_ = __alternate_form_, + .__locale_specific_form_ = __locale_specific_form_, + .__type_ = __type_}, + .__width_{__get_width(__ctx)}, + .__precision_{__get_precision(__ctx)}, + .__fill_{__fill_}}; + } + + _LIBCPP_HIDE_FROM_ABI __parsed_specifications<_CharT> __get_parsed_chrono_specifications(auto& __ctx) const { + return __parsed_specifications<_CharT>{ + .__chrono_ = + __chrono{.__alignment_ = __alignment_, + .__locale_specific_form_ = __locale_specific_form_, + .__hour_ = __hour_, + .__weekday_name_ = __weekday_name_, + .__weekday_ = __weekday_, + .__day_of_year_ = __day_of_year_, + .__week_of_year_ = __week_of_year_, + .__month_name_ = __month_name_}, + .__width_{__get_width(__ctx)}, + .__precision_{__get_precision(__ctx)}, + .__fill_{__fill_}}; + } + + __alignment __alignment_ : 3 {__alignment::__default}; + __sign __sign_ : 2 {__sign::__default}; + bool __alternate_form_ : 1 {false}; + bool __locale_specific_form_ : 1 {false}; + bool __clear_brackets_ : 1 {false}; + __type __type_{__type::__default}; + + // These flags are only used for formatting chrono. Since the struct has + // padding space left it's added to this structure. + bool __hour_ : 1 {false}; + + bool __weekday_name_ : 1 {false}; + bool __weekday_ : 1 {false}; + + bool __day_of_year_ : 1 {false}; + bool __week_of_year_ : 1 {false}; + + bool __month_name_ : 1 {false}; + + uint8_t __reserved_0_ : 2 {0}; + uint8_t __reserved_1_ : 6 {0}; + // These two flags are only used internally and not part of the + // __parsed_specifications. Therefore put them at the end. + bool __width_as_arg_ : 1 {false}; + bool __precision_as_arg_ : 1 {false}; + + /// The requested width, either the value or the arg-id. + int32_t __width_{0}; + + /// The requested precision, either the value or the arg-id. + int32_t __precision_{-1}; + + __code_point<_CharT> __fill_{}; + +private: + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_alignment(_CharT __c) { + switch (__c) { + case _CharT('<'): + __alignment_ = __alignment::__left; + return true; + + case _CharT('^'): + __alignment_ = __alignment::__center; + return true; + + case _CharT('>'): + __alignment_ = __alignment::__right; + return true; + } + return false; + } + + _LIBCPP_HIDE_FROM_ABI constexpr void __validate_fill_character(_CharT __fill, bool __use_range_fill) { + // The forbidden fill characters all code points formed from a single code unit, thus the + // check can be omitted when more code units are used. + if (__use_range_fill && (__fill == _CharT('{') || __fill == _CharT('}') || __fill == _CharT(':'))) + std::__throw_format_error("The fill option contains an invalid value"); + else if (__fill == _CharT('{') || __fill == _CharT('}')) + std::__throw_format_error("The fill option contains an invalid value"); + } + +# ifndef _LIBCPP_HAS_NO_UNICODE + // range-fill and tuple-fill are identical + template + requires same_as<_CharT, char> +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + || (same_as<_CharT, wchar_t> && sizeof(wchar_t) == 2) +# endif + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_fill_align(_Iterator& __begin, _Iterator __end, bool __use_range_fill) { + _LIBCPP_ASSERT_UNCATEGORIZED(__begin != __end, + "when called with an empty input the function will cause " + "undefined behavior by evaluating data not in the input"); + __unicode::__code_point_view<_CharT> __view{__begin, __end}; + __unicode::__consume_result __consumed = __view.__consume(); + if (__consumed.__status != __unicode::__consume_result::__ok) + std::__throw_format_error("The format specifier contains malformed Unicode characters"); + + if (__view.__position() < __end && __parse_alignment(*__view.__position())) { + ptrdiff_t __code_units = __view.__position() - __begin; + if (__code_units == 1) + // The forbidden fill characters all are code points encoded + // in one code unit, thus the check can be omitted when more + // code units are used. + __validate_fill_character(*__begin, __use_range_fill); + + std::copy_n(__begin, __code_units, std::addressof(__fill_.__data[0])); + __begin += __code_units + 1; + return true; + } + + if (!__parse_alignment(*__begin)) + return false; + + ++__begin; + return true; + } + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + template + requires(same_as<_CharT, wchar_t> && sizeof(wchar_t) == 4) + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_fill_align(_Iterator& __begin, _Iterator __end, bool __use_range_fill) { + _LIBCPP_ASSERT_UNCATEGORIZED(__begin != __end, + "when called with an empty input the function will cause " + "undefined behavior by evaluating data not in the input"); + if (__begin + 1 != __end && __parse_alignment(*(__begin + 1))) { + if (!__unicode::__is_scalar_value(*__begin)) + std::__throw_format_error("The fill option contains an invalid value"); + + __validate_fill_character(*__begin, __use_range_fill); + + __fill_.__data[0] = *__begin; + __begin += 2; + return true; + } + + if (!__parse_alignment(*__begin)) + return false; + + ++__begin; + return true; + } + +# endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +# else // _LIBCPP_HAS_NO_UNICODE + // range-fill and tuple-fill are identical + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_fill_align(_Iterator& __begin, _Iterator __end, bool __use_range_fill) { + _LIBCPP_ASSERT_UNCATEGORIZED(__begin != __end, + "when called with an empty input the function will cause " + "undefined behavior by evaluating data not in the input"); + if (__begin + 1 != __end) { + if (__parse_alignment(*(__begin + 1))) { + __validate_fill_character(*__begin, __use_range_fill); + + __fill_.__data[0] = *__begin; + __begin += 2; + return true; + } + } + + if (!__parse_alignment(*__begin)) + return false; + + ++__begin; + return true; + } + +# endif // _LIBCPP_HAS_NO_UNICODE + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_sign(_Iterator& __begin) { + switch (*__begin) { + case _CharT('-'): + __sign_ = __sign::__minus; + break; + case _CharT('+'): + __sign_ = __sign::__plus; + break; + case _CharT(' '): + __sign_ = __sign::__space; + break; + default: + return false; + } + ++__begin; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_alternate_form(_Iterator& __begin) { + if (*__begin != _CharT('#')) + return false; + + __alternate_form_ = true; + ++__begin; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_zero_padding(_Iterator& __begin) { + if (*__begin != _CharT('0')) + return false; + + if (__alignment_ == __alignment::__default) + __alignment_ = __alignment::__zero_padding; + ++__begin; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_width(_Iterator& __begin, _Iterator __end, auto& __ctx) { + if (*__begin == _CharT('0')) + std::__throw_format_error("The width option should not have a leading zero"); + + if (*__begin == _CharT('{')) { + __format::__parse_number_result __r = __format_spec::__parse_arg_id(++__begin, __end, __ctx); + __width_as_arg_ = true; + __width_ = __r.__value; + __begin = __r.__last; + return true; + } + + if (*__begin < _CharT('0') || *__begin > _CharT('9')) + return false; + + __format::__parse_number_result __r = __format::__parse_number(__begin, __end); + __width_ = __r.__value; + _LIBCPP_ASSERT_UNCATEGORIZED(__width_ != 0, "A zero value isn't allowed and should be impossible, " + "due to validations in this function"); + __begin = __r.__last; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_precision(_Iterator& __begin, _Iterator __end, auto& __ctx) { + if (*__begin != _CharT('.')) + return false; + + ++__begin; + if (__begin == __end) + std::__throw_format_error("End of input while parsing format specifier precision"); + + if (*__begin == _CharT('{')) { + __format::__parse_number_result __arg_id = __format_spec::__parse_arg_id(++__begin, __end, __ctx); + __precision_as_arg_ = true; + __precision_ = __arg_id.__value; + __begin = __arg_id.__last; + return true; + } + + if (*__begin < _CharT('0') || *__begin > _CharT('9')) + std::__throw_format_error("The precision option does not contain a value or an argument index"); + + __format::__parse_number_result __r = __format::__parse_number(__begin, __end); + __precision_ = __r.__value; + __precision_as_arg_ = false; + __begin = __r.__last; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_locale_specific_form(_Iterator& __begin) { + if (*__begin != _CharT('L')) + return false; + + __locale_specific_form_ = true; + ++__begin; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr bool __parse_clear_brackets(_Iterator& __begin) { + if (*__begin != _CharT('n')) + return false; + + __clear_brackets_ = true; + ++__begin; + return true; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr void __parse_type(_Iterator& __begin) { + // Determines the type. It does not validate whether the selected type is + // valid. Most formatters have optional fields that are only allowed for + // certain types. These parsers need to do validation after the type has + // been parsed. So its easier to implement the validation for all types in + // the specific parse function. + switch (*__begin) { + case 'A': + __type_ = __type::__hexfloat_upper_case; + break; + case 'B': + __type_ = __type::__binary_upper_case; + break; + case 'E': + __type_ = __type::__scientific_upper_case; + break; + case 'F': + __type_ = __type::__fixed_upper_case; + break; + case 'G': + __type_ = __type::__general_upper_case; + break; + case 'X': + __type_ = __type::__hexadecimal_upper_case; + break; + case 'a': + __type_ = __type::__hexfloat_lower_case; + break; + case 'b': + __type_ = __type::__binary_lower_case; + break; + case 'c': + __type_ = __type::__char; + break; + case 'd': + __type_ = __type::__decimal; + break; + case 'e': + __type_ = __type::__scientific_lower_case; + break; + case 'f': + __type_ = __type::__fixed_lower_case; + break; + case 'g': + __type_ = __type::__general_lower_case; + break; + case 'o': + __type_ = __type::__octal; + break; + case 'p': + __type_ = __type::__pointer_lower_case; + break; + case 'P': + __type_ = __type::__pointer_upper_case; + break; + case 's': + __type_ = __type::__string; + break; + case 'x': + __type_ = __type::__hexadecimal_lower_case; + break; +# if _LIBCPP_STD_VER >= 23 + case '?': + __type_ = __type::__debug; + break; +# endif + default: + return; + } + ++__begin; + } + + _LIBCPP_HIDE_FROM_ABI + int32_t __get_width(auto& __ctx) const { + if (!__width_as_arg_) + return __width_; + + return __format_spec::__substitute_arg_id(__ctx.arg(__width_)); + } + + _LIBCPP_HIDE_FROM_ABI + int32_t __get_precision(auto& __ctx) const { + if (!__precision_as_arg_) + return __precision_; + + return __format_spec::__substitute_arg_id(__ctx.arg(__precision_)); + } +}; + +// Validates whether the reserved bitfields don't change the size. +static_assert(sizeof(__parser) == 16); +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +static_assert(sizeof(__parser) == 16); +# endif + +_LIBCPP_HIDE_FROM_ABI constexpr void __process_display_type_string(__format_spec::__type __type) { + switch (__type) { + case __format_spec::__type::__default: + case __format_spec::__type::__string: + case __format_spec::__type::__debug: + break; + + default: + std::__throw_format_error("The type option contains an invalid value for a string formatting argument"); + } +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_display_type_bool_string(__parser<_CharT>& __parser, const char* __id) { + __parser.__validate(__format_spec::__fields_bool, __id); + if (__parser.__alignment_ == __alignment::__default) + __parser.__alignment_ = __alignment::__left; +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_display_type_char(__parser<_CharT>& __parser, const char* __id) { + __format_spec::__process_display_type_bool_string(__parser, __id); +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_parsed_bool(__parser<_CharT>& __parser, const char* __id) { + switch (__parser.__type_) { + case __format_spec::__type::__default: + case __format_spec::__type::__string: + __format_spec::__process_display_type_bool_string(__parser, __id); + break; + + case __format_spec::__type::__binary_lower_case: + case __format_spec::__type::__binary_upper_case: + case __format_spec::__type::__octal: + case __format_spec::__type::__decimal: + case __format_spec::__type::__hexadecimal_lower_case: + case __format_spec::__type::__hexadecimal_upper_case: + break; + + default: + __format_spec::__throw_invalid_type_format_error(__id); + } +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_parsed_char(__parser<_CharT>& __parser, const char* __id) { + switch (__parser.__type_) { + case __format_spec::__type::__default: + case __format_spec::__type::__char: + case __format_spec::__type::__debug: + __format_spec::__process_display_type_char(__parser, __id); + break; + + case __format_spec::__type::__binary_lower_case: + case __format_spec::__type::__binary_upper_case: + case __format_spec::__type::__octal: + case __format_spec::__type::__decimal: + case __format_spec::__type::__hexadecimal_lower_case: + case __format_spec::__type::__hexadecimal_upper_case: + break; + + default: + __format_spec::__throw_invalid_type_format_error(__id); + } +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_parsed_integer(__parser<_CharT>& __parser, const char* __id) { + switch (__parser.__type_) { + case __format_spec::__type::__default: + case __format_spec::__type::__binary_lower_case: + case __format_spec::__type::__binary_upper_case: + case __format_spec::__type::__octal: + case __format_spec::__type::__decimal: + case __format_spec::__type::__hexadecimal_lower_case: + case __format_spec::__type::__hexadecimal_upper_case: + break; + + case __format_spec::__type::__char: + __format_spec::__process_display_type_char(__parser, __id); + break; + + default: + __format_spec::__throw_invalid_type_format_error(__id); + } +} + +template +_LIBCPP_HIDE_FROM_ABI constexpr void __process_parsed_floating_point(__parser<_CharT>& __parser, const char* __id) { + switch (__parser.__type_) { + case __format_spec::__type::__default: + case __format_spec::__type::__hexfloat_lower_case: + case __format_spec::__type::__hexfloat_upper_case: + // Precision specific behavior will be handled later. + break; + case __format_spec::__type::__scientific_lower_case: + case __format_spec::__type::__scientific_upper_case: + case __format_spec::__type::__fixed_lower_case: + case __format_spec::__type::__fixed_upper_case: + case __format_spec::__type::__general_lower_case: + case __format_spec::__type::__general_upper_case: + if (!__parser.__precision_as_arg_ && __parser.__precision_ == -1) + // Set the default precision for the call to to_chars. + __parser.__precision_ = 6; + break; + + default: + __format_spec::__throw_invalid_type_format_error(__id); + } +} + +_LIBCPP_HIDE_FROM_ABI constexpr void __process_display_type_pointer(__format_spec::__type __type, const char* __id) { + switch (__type) { + case __format_spec::__type::__default: + case __format_spec::__type::__pointer_lower_case: + case __format_spec::__type::__pointer_upper_case: + break; + + default: + __format_spec::__throw_invalid_type_format_error(__id); + } +} + +template +struct __column_width_result { + /// The number of output columns. + size_t __width_; + /// One beyond the last code unit used in the estimation. + /// + /// This limits the original output to fit in the wanted number of columns. + _Iterator __last_; +}; + +template +__column_width_result(size_t, _Iterator) -> __column_width_result<_Iterator>; + +/// Since a column width can be two it's possible that the requested column +/// width can't be achieved. Depending on the intended usage the policy can be +/// selected. +/// - When used as precision the maximum width may not be exceeded and the +/// result should be "rounded down" to the previous boundary. +/// - When used as a width we're done once the minimum is reached, but +/// exceeding is not an issue. Rounding down is an issue since that will +/// result in writing fill characters. Therefore the result needs to be +/// "rounded up". +enum class __column_width_rounding { __down, __up }; + +# ifndef _LIBCPP_HAS_NO_UNICODE + +namespace __detail { +template +_LIBCPP_HIDE_FROM_ABI constexpr __column_width_result<_Iterator> __estimate_column_width_grapheme_clustering( + _Iterator __first, _Iterator __last, size_t __maximum, __column_width_rounding __rounding) noexcept { + using _CharT = iter_value_t<_Iterator>; + __unicode::__extended_grapheme_cluster_view<_CharT> __view{__first, __last}; + + __column_width_result<_Iterator> __result{0, __first}; + while (__result.__last_ != __last && __result.__width_ <= __maximum) { + typename __unicode::__extended_grapheme_cluster_view<_CharT>::__cluster __cluster = __view.__consume(); + int __width = __width_estimation_table::__estimated_width(__cluster.__code_point_); + + // When the next entry would exceed the maximum width the previous width + // might be returned. For example when a width of 100 is requested the + // returned width might be 99, since the next code point has an estimated + // column width of 2. This depends on the rounding flag. + // When the maximum is exceeded the loop will abort the next iteration. + if (__rounding == __column_width_rounding::__down && __result.__width_ + __width > __maximum) + return __result; + + __result.__width_ += __width; + __result.__last_ = __cluster.__last_; + } + + return __result; +} + +} // namespace __detail + +// Unicode can be stored in several formats: UTF-8, UTF-16, and UTF-32. +// Depending on format the relation between the number of code units stored and +// the number of output columns differs. The first relation is the number of +// code units forming a code point. (The text assumes the code units are +// unsigned.) +// - UTF-8 The number of code units is between one and four. The first 127 +// Unicode code points match the ASCII character set. When the highest bit is +// set it means the code point has more than one code unit. +// - UTF-16: The number of code units is between 1 and 2. When the first +// code unit is in the range [0xd800,0xdfff) it means the code point uses two +// code units. +// - UTF-32: The number of code units is always one. +// +// The code point to the number of columns is specified in +// [format.string.std]/11. This list might change in the future. +// +// Another thing to be taken into account is Grapheme clustering. This means +// that in some cases multiple code points are combined one element in the +// output. For example: +// - an ASCII character with a combined diacritical mark +// - an emoji with a skin tone modifier +// - a group of combined people emoji to create a family +// - a combination of flag emoji +// +// See also: +// - [format.string.general]/11 +// - https://en.wikipedia.org/wiki/UTF-8#Encoding +// - https://en.wikipedia.org/wiki/UTF-16#U+D800_to_U+DFFF + +_LIBCPP_HIDE_FROM_ABI constexpr bool __is_ascii(char32_t __c) { return __c < 0x80; } + +/// Determines the number of output columns needed to render the input. +/// +/// \note When the scanner encounters malformed Unicode it acts as-if every +/// code unit is a one column code point. Typically a terminal uses the same +/// strategy and replaces every malformed code unit with a one column +/// replacement character. +/// +/// \param __first Points to the first element of the input range. +/// \param __last Points beyond the last element of the input range. +/// \param __maximum The maximum number of output columns. The returned number +/// of estimated output columns will not exceed this value. +/// \param __rounding Selects the rounding method. +/// \c __down result.__width_ <= __maximum +/// \c __up result.__width_ <= __maximum + 1 +template ::const_iterator> +_LIBCPP_HIDE_FROM_ABI constexpr __column_width_result<_Iterator> __estimate_column_width( + basic_string_view<_CharT> __str, size_t __maximum, __column_width_rounding __rounding) noexcept { + // The width estimation is done in two steps: + // - Quickly process for the ASCII part. ASCII has the following properties + // - One code unit is one code point + // - Every code point has an estimated width of one + // - When needed it will a Unicode Grapheme clustering algorithm to find + // the proper place for truncation. + + if (__str.empty() || __maximum == 0) + return {0, __str.begin()}; + + // ASCII has one caveat; when an ASCII character is followed by a non-ASCII + // character they might be part of an extended grapheme cluster. For example: + // an ASCII letter and a COMBINING ACUTE ACCENT + // The truncate should happen after the COMBINING ACUTE ACCENT. Therefore we + // need to scan one code unit beyond the requested precision. When this code + // unit is non-ASCII we omit the current code unit and let the Grapheme + // clustering algorithm do its work. + auto __it = __str.begin(); + if (__format_spec::__is_ascii(*__it)) { + do { + --__maximum; + ++__it; + if (__it == __str.end()) + return {__str.size(), __str.end()}; + + if (__maximum == 0) { + if (__format_spec::__is_ascii(*__it)) + return {static_cast(__it - __str.begin()), __it}; + + break; + } + } while (__format_spec::__is_ascii(*__it)); + --__it; + ++__maximum; + } + + ptrdiff_t __ascii_size = __it - __str.begin(); + __column_width_result __result = + __detail::__estimate_column_width_grapheme_clustering(__it, __str.end(), __maximum, __rounding); + + __result.__width_ += __ascii_size; + return __result; +} +# else // !defined(_LIBCPP_HAS_NO_UNICODE) +template +_LIBCPP_HIDE_FROM_ABI constexpr __column_width_result::const_iterator> +__estimate_column_width(basic_string_view<_CharT> __str, size_t __maximum, __column_width_rounding) noexcept { + // When Unicode isn't supported assume ASCII and every code unit is one code + // point. In ASCII the estimated column width is always one. Thus there's no + // need for rounding. + size_t __width_ = _VSTD::min(__str.size(), __maximum); + return {__width_, __str.begin() + __width_}; +} + +# endif // !defined(_LIBCPP_HAS_NO_UNICODE) + +} // namespace __format_spec + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FORMAT_PARSER_STD_FORMAT_SPEC_H diff --git a/lib/libcxx/include/__format/range_default_formatter.h b/lib/libcxx/include/__format/range_default_formatter.h new file mode 100644 index 0000000..bcab5d6 --- /dev/null +++ b/lib/libcxx/include/__format/range_default_formatter.h @@ -0,0 +1,220 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_RANGE_DEFAULT_FORMATTER_H +#define _LIBCPP___FORMAT_RANGE_DEFAULT_FORMATTER_H + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#include <__algorithm/ranges_copy.h> +#include <__chrono/statically_widen.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/concepts.h> +#include <__format/formatter.h> +#include <__format/range_formatter.h> +#include <__iterator/back_insert_iterator.h> +#include <__ranges/concepts.h> +#include <__ranges/data.h> +#include <__ranges/size.h> +#include <__type_traits/conditional.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/pair.h> +#include + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +template +concept __const_formattable_range = + ranges::input_range && formattable, _CharT>; + +template +using __fmt_maybe_const = conditional_t<__const_formattable_range<_Rp, _CharT>, const _Rp, _Rp>; + +_LIBCPP_DIAGNOSTIC_PUSH +_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wshadow") +_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wshadow") +// This shadows map, set, and string. +enum class range_format { disabled, map, set, sequence, string, debug_string }; +_LIBCPP_DIAGNOSTIC_POP + +// There is no definition of this struct, it's purely intended to be used to +// generate diagnostics. +template +struct _LIBCPP_TEMPLATE_VIS __instantiated_the_primary_template_of_format_kind; + +template +constexpr range_format format_kind = [] { + // [format.range.fmtkind]/1 + // A program that instantiates the primary template of format_kind is ill-formed. + static_assert(sizeof(_Rp) != sizeof(_Rp), "create a template specialization of format_kind for your type"); + return range_format::disabled; +}(); + +template + requires same_as<_Rp, remove_cvref_t<_Rp>> +inline constexpr range_format format_kind<_Rp> = [] { + // [format.range.fmtkind]/2 + + // 2.1 If same_as>, R> is true, + // Otherwise format_kind is range_format::disabled. + if constexpr (same_as>, _Rp>) + return range_format::disabled; + // 2.2 Otherwise, if the qualified-id R::key_type is valid and denotes a type: + else if constexpr (requires { typename _Rp::key_type; }) { + // 2.2.1 If the qualified-id R::mapped_type is valid and denotes a type ... + if constexpr (requires { typename _Rp::mapped_type; } && + // 2.2.1 ... If either U is a specialization of pair or U is a specialization + // of tuple and tuple_size_v == 2 + __fmt_pair_like>>) + return range_format::map; + else + // 2.2.2 Otherwise format_kind is range_format::set. + return range_format::set; + } else + // 2.3 Otherwise, format_kind is range_format::sequence. + return range_format::sequence; +}(); + +template +struct _LIBCPP_TEMPLATE_VIS __range_default_formatter; + +// Required specializations + +template +struct _LIBCPP_TEMPLATE_VIS __range_default_formatter { +private: + using __maybe_const_r = __fmt_maybe_const<_Rp, _CharT>; + range_formatter>, _CharT> __underlying_; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr void set_separator(basic_string_view<_CharT> __separator) noexcept { + __underlying_.set_separator(__separator); + } + _LIBCPP_HIDE_FROM_ABI constexpr void + set_brackets(basic_string_view<_CharT> __opening_bracket, basic_string_view<_CharT> __closing_bracket) noexcept { + __underlying_.set_brackets(__opening_bracket, __closing_bracket); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return __underlying_.parse(__ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(__maybe_const_r& __range, _FormatContext& __ctx) const { + return __underlying_.format(__range, __ctx); + } +}; + +template +struct _LIBCPP_TEMPLATE_VIS __range_default_formatter { +private: + using __maybe_const_map = __fmt_maybe_const<_Rp, _CharT>; + using __element_type = remove_cvref_t>; + range_formatter<__element_type, _CharT> __underlying_; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr __range_default_formatter() + requires(__fmt_pair_like<__element_type>) + { + __underlying_.set_brackets(_LIBCPP_STATICALLY_WIDEN(_CharT, "{"), _LIBCPP_STATICALLY_WIDEN(_CharT, "}")); + __underlying_.underlying().set_brackets({}, {}); + __underlying_.underlying().set_separator(_LIBCPP_STATICALLY_WIDEN(_CharT, ": ")); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return __underlying_.parse(__ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(__maybe_const_map& __range, _FormatContext& __ctx) const { + return __underlying_.format(__range, __ctx); + } +}; + +template +struct _LIBCPP_TEMPLATE_VIS __range_default_formatter { +private: + using __maybe_const_set = __fmt_maybe_const<_Rp, _CharT>; + using __element_type = remove_cvref_t>; + range_formatter<__element_type, _CharT> __underlying_; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr __range_default_formatter() { + __underlying_.set_brackets(_LIBCPP_STATICALLY_WIDEN(_CharT, "{"), _LIBCPP_STATICALLY_WIDEN(_CharT, "}")); + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + return __underlying_.parse(__ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(__maybe_const_set& __range, _FormatContext& __ctx) const { + return __underlying_.format(__range, __ctx); + } +}; + +template + requires(_Kp == range_format::string || _Kp == range_format::debug_string) +struct _LIBCPP_TEMPLATE_VIS __range_default_formatter<_Kp, _Rp, _CharT> { +private: + // This deviates from the Standard, there the exposition only type is + // formatter, charT> underlying_; + // Using a string_view allows the format function to avoid a copy of the + // input range when it is a contigious range. + formatter, _CharT> __underlying_; + +public: + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + typename _ParseContext::iterator __i = __underlying_.parse(__ctx); + if constexpr (_Kp == range_format::debug_string) + __underlying_.set_debug_format(); + return __i; + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + format(conditional_t, const _Rp&, _Rp&> __range, _FormatContext& __ctx) const { + // When the range is contiguous use a basic_string_view instead to avoid a + // copy of the underlying data. The basic_string_view formatter + // specialization is the "basic" string formatter in libc++. + if constexpr (ranges::contiguous_range<_Rp> && std::ranges::sized_range<_Rp>) + return __underlying_.format(basic_string_view<_CharT>{ranges::data(__range), ranges::size(__range)}, __ctx); + else { + // P2106's from_range has not been implemented yet. Instead use a simple + // copy operation. + // TODO FMT use basic_string's "from_range" constructor. + // return __underlying_.format(basic_string<_CharT>{from_range, __range}, __ctx); + basic_string<_CharT> __str; + std::ranges::copy(__range, back_insert_iterator{__str}); + return __underlying_.format(static_cast>(__str), __ctx); + } + } +}; + +template + requires(format_kind<_Rp> != range_format::disabled && formattable, _CharT>) +struct _LIBCPP_TEMPLATE_VIS formatter<_Rp, _CharT> : __range_default_formatter, _Rp, _CharT> {}; + +#endif //_LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_RANGE_DEFAULT_FORMATTER_H diff --git a/lib/libcxx/include/__format/range_formatter.h b/lib/libcxx/include/__format/range_formatter.h new file mode 100644 index 0000000..2787097 --- /dev/null +++ b/lib/libcxx/include/__format/range_formatter.h @@ -0,0 +1,270 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_RANGE_FORMATTER_H +#define _LIBCPP___FORMAT_RANGE_FORMATTER_H + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#include <__algorithm/ranges_copy.h> +#include <__chrono/statically_widen.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/buffer.h> +#include <__format/concepts.h> +#include <__format/format_context.h> +#include <__format/format_error.h> +#include <__format/formatter.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__iterator/back_insert_iterator.h> +#include <__ranges/concepts.h> +#include <__ranges/data.h> +#include <__ranges/size.h> +#include <__type_traits/remove_cvref.h> +#include + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +template + requires same_as, _Tp> && formattable<_Tp, _CharT> +struct _LIBCPP_TEMPLATE_VIS range_formatter { + _LIBCPP_HIDE_FROM_ABI constexpr void set_separator(basic_string_view<_CharT> __separator) noexcept { + __separator_ = __separator; + } + _LIBCPP_HIDE_FROM_ABI constexpr void + set_brackets(basic_string_view<_CharT> __opening_bracket, basic_string_view<_CharT> __closing_bracket) noexcept { + __opening_bracket_ = __opening_bracket; + __closing_bracket_ = __closing_bracket; + } + + _LIBCPP_HIDE_FROM_ABI constexpr formatter<_Tp, _CharT>& underlying() noexcept { return __underlying_; } + _LIBCPP_HIDE_FROM_ABI constexpr const formatter<_Tp, _CharT>& underlying() const noexcept { return __underlying_; } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { + auto __begin = __parser_.__parse(__ctx, __format_spec::__fields_range); + auto __end = __ctx.end(); + // Note the cases where __begin == __end in this code only happens when the + // replacement-field has no terminating }, or when the parse is manually + // called with a format-spec. The former is an error and the latter means + // using a formatter without the format functions or print. + if (__begin == __end) [[unlikely]] + return __parse_empty_range_underlying_spec(__ctx, __begin); + + // The n field overrides a possible m type, therefore delay applying the + // effect of n until the type has been procesed. + __parse_type(__begin, __end); + if (__parser_.__clear_brackets_) + set_brackets({}, {}); + if (__begin == __end) [[unlikely]] + return __parse_empty_range_underlying_spec(__ctx, __begin); + + bool __has_range_underlying_spec = *__begin == _CharT(':'); + if (__has_range_underlying_spec) { + // range-underlying-spec: + // : format-spec + ++__begin; + } else if (__begin != __end && *__begin != _CharT('}')) + // When there is no underlaying range the current parse should have + // consumed the format-spec. If not, the not consumed input will be + // processed by the underlying. For example {:-} for a range in invalid, + // the sign field is not present. Without this check the underlying_ will + // get -} as input which my be valid. + std::__throw_format_error("The format specifier should consume the input or end with a '}'"); + + __ctx.advance_to(__begin); + __begin = __underlying_.parse(__ctx); + + // This test should not be required if __has_range_underlying_spec is false. + // However this test makes sure the underlying formatter left the parser in + // a valid state. (Note this is not a full protection against evil parsers. + // For example + // } this is test for the next argument {} + // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ + // could consume more than it should. + if (__begin != __end && *__begin != _CharT('}')) + std::__throw_format_error("The format specifier should consume the input or end with a '}'"); + + if (__parser_.__type_ != __format_spec::__type::__default) { + // [format.range.formatter]/6 + // If the range-type is s or ?s, then there shall be no n option and no + // range-underlying-spec. + if (__parser_.__clear_brackets_) { + if (__parser_.__type_ == __format_spec::__type::__string) + std::__throw_format_error("The n option and type s can't be used together"); + std::__throw_format_error("The n option and type ?s can't be used together"); + } + if (__has_range_underlying_spec) { + if (__parser_.__type_ == __format_spec::__type::__string) + std::__throw_format_error("Type s and an underlying format specification can't be used together"); + std::__throw_format_error("Type ?s and an underlying format specification can't be used together"); + } + } else if (!__has_range_underlying_spec) + std::__set_debug_format(__underlying_); + + return __begin; + } + + template + requires formattable, _CharT> && + same_as>, _Tp> + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_Rp&& __range, _FormatContext& __ctx) const { + __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); + + if (!__specs.__has_width()) + return __format_range(__range, __ctx, __specs); + + // The size of the buffer needed is: + // - open bracket characters + // - close bracket character + // - n elements where every element may have a different size + // - (n -1) separators + // The size of the element is hard to predict, knowing the type helps but + // it depends on the format-spec. As an initial estimate we guess 6 + // characters. + // Typically both brackets are 1 character and the separator is 2 + // characters. Which means there will be + // (n - 1) * 2 + 1 + 1 = n * 2 character + // So estimate 8 times the range size as buffer. + std::size_t __capacity_hint = 0; + if constexpr (std::ranges::sized_range<_Rp>) + __capacity_hint = 8 * ranges::size(__range); + __format::__retarget_buffer<_CharT> __buffer{__capacity_hint}; + basic_format_context::__iterator, _CharT> __c{ + __buffer.__make_output_iterator(), __ctx}; + + __format_range(__range, __c, __specs); + + return __formatter::__write_string_no_precision(__buffer.__view(), __ctx.out(), __specs); + } + + template + typename _FormatContext::iterator _LIBCPP_HIDE_FROM_ABI + __format_range(_Rp&& __range, _FormatContext& __ctx, __format_spec::__parsed_specifications<_CharT> __specs) const { + if constexpr (same_as<_Tp, _CharT>) { + switch (__specs.__std_.__type_) { + case __format_spec::__type::__string: + case __format_spec::__type::__debug: + return __format_as_string(__range, __ctx, __specs.__std_.__type_ == __format_spec::__type::__debug); + default: + return __format_as_sequence(__range, __ctx); + } + } else + return __format_as_sequence(__range, __ctx); + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + __format_as_string(_Rp&& __range, _FormatContext& __ctx, bool __debug_format) const { + // When the range is contiguous use a basic_string_view instead to avoid a + // copy of the underlying data. The basic_string_view formatter + // specialization is the "basic" string formatter in libc++. + if constexpr (ranges::contiguous_range<_Rp> && std::ranges::sized_range<_Rp>) { + std::formatter, _CharT> __formatter; + if (__debug_format) + __formatter.set_debug_format(); + return __formatter.format( + basic_string_view<_CharT>{ + ranges::data(__range), + ranges::size(__range), + }, + __ctx); + } else { + std::formatter, _CharT> __formatter; + if (__debug_format) + __formatter.set_debug_format(); + // P2106's from_range has not been implemented yet. Instead use a simple + // copy operation. + // TODO FMT use basic_string's "from_range" constructor. + // return std::formatter, _CharT>{}.format(basic_string<_CharT>{from_range, __range}, __ctx); + basic_string<_CharT> __str; + ranges::copy(__range, back_insert_iterator{__str}); + return __formatter.format(__str, __ctx); + } + } + + template + _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator + __format_as_sequence(_Rp&& __range, _FormatContext& __ctx) const { + __ctx.advance_to(ranges::copy(__opening_bracket_, __ctx.out()).out); + bool __use_separator = false; + for (auto&& __e : __range) { + if (__use_separator) + __ctx.advance_to(ranges::copy(__separator_, __ctx.out()).out); + else + __use_separator = true; + + __ctx.advance_to(__underlying_.format(__e, __ctx)); + } + + return ranges::copy(__closing_bracket_, __ctx.out()).out; + } + + __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__left}; + +private: + template + _LIBCPP_HIDE_FROM_ABI constexpr void __parse_type(_Iterator& __begin, _Iterator __end) { + switch (*__begin) { + case _CharT('m'): + if constexpr (__fmt_pair_like<_Tp>) { + set_brackets(_LIBCPP_STATICALLY_WIDEN(_CharT, "{"), _LIBCPP_STATICALLY_WIDEN(_CharT, "}")); + set_separator(_LIBCPP_STATICALLY_WIDEN(_CharT, ", ")); + ++__begin; + } else + std::__throw_format_error("Type m requires a pair or a tuple with two elements"); + break; + + case _CharT('s'): + if constexpr (same_as<_Tp, _CharT>) { + __parser_.__type_ = __format_spec::__type::__string; + ++__begin; + } else + std::__throw_format_error("Type s requires character type as formatting argument"); + break; + + case _CharT('?'): + ++__begin; + if (__begin == __end || *__begin != _CharT('s')) + std::__throw_format_error("The format specifier should consume the input or end with a '}'"); + if constexpr (same_as<_Tp, _CharT>) { + __parser_.__type_ = __format_spec::__type::__debug; + ++__begin; + } else + std::__throw_format_error("Type ?s requires character type as formatting argument"); + } + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator + __parse_empty_range_underlying_spec(_ParseContext& __ctx, typename _ParseContext::iterator __begin) { + __ctx.advance_to(__begin); + [[maybe_unused]] typename _ParseContext::iterator __result = __underlying_.parse(__ctx); + _LIBCPP_ASSERT_UNCATEGORIZED( + __result == __begin, + "the underlying's parse function should not advance the input beyond the end of the input"); + return __begin; + } + + formatter<_Tp, _CharT> __underlying_; + basic_string_view<_CharT> __separator_ = _LIBCPP_STATICALLY_WIDEN(_CharT, ", "); + basic_string_view<_CharT> __opening_bracket_ = _LIBCPP_STATICALLY_WIDEN(_CharT, "["); + basic_string_view<_CharT> __closing_bracket_ = _LIBCPP_STATICALLY_WIDEN(_CharT, "]"); +}; + +#endif //_LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_RANGE_FORMATTER_H diff --git a/lib/libcxx/include/__format/unicode.h b/lib/libcxx/include/__format/unicode.h new file mode 100644 index 0000000..8666f80 --- /dev/null +++ b/lib/libcxx/include/__format/unicode.h @@ -0,0 +1,481 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_UNICODE_H +#define _LIBCPP___FORMAT_UNICODE_H + +#include <__assert> +#include <__bit/countl.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__format/extended_grapheme_cluster_table.h> +#include <__iterator/concepts.h> +#include <__iterator/readable_traits.h> // iter_value_t +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __unicode { + +// Helper struct for the result of a consume operation. +// +// The status value for a correct code point is 0. This allows a valid value to +// be used without masking. +// When the decoding fails it know the number of code units affected. For the +// current use-cases that value is not needed, therefore it is not stored. +// The escape routine needs the number of code units for both a valid and +// invalid character and keeps track of it itself. Doing it in this result +// unconditionally would give some overhead when the value is unneeded. +struct __consume_result { + // When __status == __ok it contains the decoded code point. + // Else it contains the replacement character U+FFFD + char32_t __code_point : 31; + + enum : char32_t { + // Consumed a well-formed code point. + __ok = 0, + // Encountered invalid UTF-8 + __error = 1 + } __status : 1 {__ok}; +}; +static_assert(sizeof(__consume_result) == sizeof(char32_t)); + +# ifndef _LIBCPP_HAS_NO_UNICODE + +/// Implements the grapheme cluster boundary rules +/// +/// These rules are used to implement format's width estimation as stated in +/// [format.string.std]/11 +/// +/// The Standard refers to UAX \#29 for Unicode 12.0.0 +/// https://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundary_Rules +/// +/// The data tables used are +/// https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt +/// https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt +/// https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt (for testing only) + +inline constexpr char32_t __replacement_character = U'\ufffd'; + +// The error of a consume operation. +// +// This sets the code point to the replacement character. This code point does +// not participate in the grapheme clustering, so grapheme clustering code can +// ignore the error status and always use the code point. +inline constexpr __consume_result __consume_result_error{__replacement_character, __consume_result::__error}; + +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool __is_high_surrogate(char32_t __value) { + return __value >= 0xd800 && __value <= 0xdbff; +} + +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool __is_low_surrogate(char32_t __value) { + return __value >= 0xdc00 && __value <= 0xdfff; +} + +// https://www.unicode.org/glossary/#surrogate_code_point +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr bool __is_surrogate(char32_t __value) { + return __value >= 0xd800 && __value <= 0xdfff; +} + +// https://www.unicode.org/glossary/#code_point +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr bool __is_code_point(char32_t __value) { + return __value <= 0x10ffff; +} + +// https://www.unicode.org/glossary/#unicode_scalar_value +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr bool __is_scalar_value(char32_t __value) { + return __unicode::__is_code_point(__value) && !__unicode::__is_surrogate(__value); +} + +template + requires same_as, char> +_LIBCPP_HIDE_FROM_ABI constexpr bool __is_continuation(_Iterator __char, int __count) { + do { + if ((*__char & 0b1100'0000) != 0b1000'0000) + return false; + --__count; + ++__char; + } while (__count); + return true; +} + +/// Helper class to extract a code unit from a Unicode character range. +/// +/// The stored range is a view. There are multiple specialization for different +/// character types. +template +class __code_point_view; + +/// UTF-8 specialization. +template <> +class __code_point_view { + using _Iterator = basic_string_view::const_iterator; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr explicit __code_point_view(_Iterator __first, _Iterator __last) + : __first_(__first), __last_(__last) {} + + _LIBCPP_HIDE_FROM_ABI constexpr bool __at_end() const noexcept { return __first_ == __last_; } + _LIBCPP_HIDE_FROM_ABI constexpr _Iterator __position() const noexcept { return __first_; } + + // https://www.unicode.org/versions/latest/ch03.pdf#G7404 + // Based on Table 3-7, Well-Formed UTF-8 Byte Sequences + // + // Code Points First Byte Second Byte Third Byte Fourth Byte Remarks + // U+0000..U+007F 00..7F U+0000..U+007F 1 code unit range + // C0..C1 80..BF invalid overlong encoding + // U+0080..U+07FF C2..DF 80..BF U+0080..U+07FF 2 code unit range + // E0 80..9F 80..BF invalid overlong encoding + // U+0800..U+0FFF E0 A0..BF 80..BF U+0800..U+FFFF 3 code unit range + // U+1000..U+CFFF E1..EC 80..BF 80..BF + // U+D000..U+D7FF ED 80..9F 80..BF + // U+D800..U+DFFF ED A0..BF 80..BF invalid encoding of surrogate code point + // U+E000..U+FFFF EE..EF 80..BF 80..BF + // F0 80..8F 80..BF 80..BF invalid overlong encoding + // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF U+10000..U+10FFFF 4 code unit range + // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF + // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF + // F4 90..BF 80..BF 80..BF U+110000.. invalid code point range + // + // Unlike other parsers, these invalid entries are tested after decoding. + // - The parser always needs to consume these code units + // - The code is optimized for well-formed UTF-8 + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __consume_result __consume() noexcept { + _LIBCPP_ASSERT_UNCATEGORIZED(__first_ != __last_, "can't move beyond the end of input"); + + // Based on the number of leading 1 bits the number of code units in the + // code point can be determined. See + // https://en.wikipedia.org/wiki/UTF-8#Encoding + switch (std::countl_one(static_cast(*__first_))) { + case 0: + return {static_cast(*__first_++)}; + + case 2: { + if (__last_ - __first_ < 2 || !__unicode::__is_continuation(__first_ + 1, 1)) [[unlikely]] + break; + + char32_t __value = static_cast(*__first_++) & 0x1f; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + + // These values should be encoded in 1 UTF-8 code unit. + if (__value < 0x0080) [[unlikely]] + return __consume_result_error; + + return {__value}; + } + + case 3: { + if (__last_ - __first_ < 3 || !__unicode::__is_continuation(__first_ + 1, 2)) [[unlikely]] + break; + + char32_t __value = static_cast(*__first_++) & 0x0f; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + + // These values should be encoded in 1 or 2 UTF-8 code units. + if (__value < 0x0800) [[unlikely]] + return __consume_result_error; + + // A surrogate value is always encoded in 3 UTF-8 code units. + if (__unicode::__is_surrogate(__value)) [[unlikely]] + return __consume_result_error; + + return {__value}; + } + + case 4: { + if (__last_ - __first_ < 4 || !__unicode::__is_continuation(__first_ + 1, 3)) [[unlikely]] + break; + + char32_t __value = static_cast(*__first_++) & 0x07; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + __value <<= 6; + __value |= static_cast(*__first_++) & 0x3f; + + // These values should be encoded in 1, 2, or 3 UTF-8 code units. + if (__value < 0x10000) [[unlikely]] + return __consume_result_error; + + // A value too large is always encoded in 4 UTF-8 code units. + if (!__unicode::__is_code_point(__value)) [[unlikely]] + return __consume_result_error; + + return {__value}; + } + } + // An invalid number of leading ones can be garbage or a code unit in the + // middle of a code point. By consuming one code unit the parser may get + // "in sync" after a few code units. + ++__first_; + return __consume_result_error; + } + +private: + _Iterator __first_; + _Iterator __last_; +}; + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +_LIBCPP_HIDE_FROM_ABI constexpr bool __is_surrogate_pair_high(wchar_t __value) { + return __value >= 0xd800 && __value <= 0xdbff; +} + +_LIBCPP_HIDE_FROM_ABI constexpr bool __is_surrogate_pair_low(wchar_t __value) { + return __value >= 0xdc00 && __value <= 0xdfff; +} + +/// This specialization depends on the size of wchar_t +/// - 2 UTF-16 (for example Windows and AIX) +/// - 4 UTF-32 (for example Linux) +template <> +class __code_point_view { + using _Iterator = typename basic_string_view::const_iterator; + +public: + static_assert(sizeof(wchar_t) == 2 || sizeof(wchar_t) == 4, "sizeof(wchar_t) has a not implemented value"); + + _LIBCPP_HIDE_FROM_ABI constexpr explicit __code_point_view(_Iterator __first, _Iterator __last) + : __first_(__first), __last_(__last) {} + + _LIBCPP_HIDE_FROM_ABI constexpr _Iterator __position() const noexcept { return __first_; } + _LIBCPP_HIDE_FROM_ABI constexpr bool __at_end() const noexcept { return __first_ == __last_; } + + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __consume_result __consume() noexcept { + _LIBCPP_ASSERT_UNCATEGORIZED(__first_ != __last_, "can't move beyond the end of input"); + + char32_t __value = static_cast(*__first_++); + if constexpr (sizeof(wchar_t) == 2) { + if (__unicode::__is_low_surrogate(__value)) [[unlikely]] + return __consume_result_error; + + if (__unicode::__is_high_surrogate(__value)) { + if (__first_ == __last_ || !__unicode::__is_low_surrogate(static_cast(*__first_))) [[unlikely]] + return __consume_result_error; + + __value -= 0xd800; + __value <<= 10; + __value += static_cast(*__first_++) - 0xdc00; + __value += 0x10000; + + if (!__unicode::__is_code_point(__value)) [[unlikely]] + return __consume_result_error; + } + } else { + if (!__unicode::__is_scalar_value(__value)) [[unlikely]] + return __consume_result_error; + } + + return {__value}; + } + +private: + _Iterator __first_; + _Iterator __last_; +}; +# endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +_LIBCPP_HIDE_FROM_ABI constexpr bool __at_extended_grapheme_cluster_break( + bool& __ri_break_allowed, + bool __has_extened_pictographic, + __extended_grapheme_custer_property_boundary::__property __prev, + __extended_grapheme_custer_property_boundary::__property __next) { + using __extended_grapheme_custer_property_boundary::__property; + + __has_extened_pictographic |= __prev == __property::__Extended_Pictographic; + + // https://www.unicode.org/reports/tr29/tr29-39.html#Grapheme_Cluster_Boundary_Rules + + // *** Break at the start and end of text, unless the text is empty. *** + + _LIBCPP_ASSERT_UNCATEGORIZED(__prev != __property::__sot, "should be handled in the constructor"); // GB1 + _LIBCPP_ASSERT_UNCATEGORIZED(__prev != __property::__eot, "should be handled by our caller"); // GB2 + + // *** Do not break between a CR and LF. Otherwise, break before and after controls. *** + if (__prev == __property::__CR && __next == __property::__LF) // GB3 + return false; + + if (__prev == __property::__Control || __prev == __property::__CR || __prev == __property::__LF) // GB4 + return true; + + if (__next == __property::__Control || __next == __property::__CR || __next == __property::__LF) // GB5 + return true; + + // *** Do not break Hangul syllable sequences. *** + if (__prev == __property::__L && + (__next == __property::__L || __next == __property::__V || __next == __property::__LV || + __next == __property::__LVT)) // GB6 + return false; + + if ((__prev == __property::__LV || __prev == __property::__V) && + (__next == __property::__V || __next == __property::__T)) // GB7 + return false; + + if ((__prev == __property::__LVT || __prev == __property::__T) && __next == __property::__T) // GB8 + return false; + + // *** Do not break before extending characters or ZWJ. *** + if (__next == __property::__Extend || __next == __property::__ZWJ) + return false; // GB9 + + // *** Do not break before SpacingMarks, or after Prepend characters. *** + if (__next == __property::__SpacingMark) // GB9a + return false; + + if (__prev == __property::__Prepend) // GB9b + return false; + + // *** Do not break within emoji modifier sequences or emoji zwj sequences. *** + + // GB11 \p{Extended_Pictographic} Extend* ZWJ x \p{Extended_Pictographic} + // + // Note that several parts of this rule are matched by GB9: Any x (Extend | ZWJ) + // - \p{Extended_Pictographic} x Extend + // - Extend x Extend + // - \p{Extended_Pictographic} x ZWJ + // - Extend x ZWJ + // + // So the only case left to test is + // - \p{Extended_Pictographic}' x ZWJ x \p{Extended_Pictographic} + // where \p{Extended_Pictographic}' is stored in __has_extened_pictographic + if (__has_extened_pictographic && __prev == __property::__ZWJ && __next == __property::__Extended_Pictographic) + return false; + + // *** Do not break within emoji flag sequences *** + + // That is, do not break between regional indicator (RI) symbols if there + // is an odd number of RI characters before the break point. + + if (__prev == __property::__Regional_Indicator && __next == __property::__Regional_Indicator) { // GB12 + GB13 + __ri_break_allowed = !__ri_break_allowed; + return __ri_break_allowed; + } + + // *** Otherwise, break everywhere. *** + return true; // GB999 +} + +/// Helper class to extract an extended grapheme cluster from a Unicode character range. +/// +/// This function is used to determine the column width of an extended grapheme +/// cluster. In order to do that only the first code point is evaluated. +/// Therefore only this code point is extracted. +template +class __extended_grapheme_cluster_view { + using _Iterator = typename basic_string_view<_CharT>::const_iterator; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr explicit __extended_grapheme_cluster_view(_Iterator __first, _Iterator __last) + : __code_point_view_(__first, __last), + __next_code_point_(__code_point_view_.__consume().__code_point), + __next_prop_(__extended_grapheme_custer_property_boundary::__get_property(__next_code_point_)) {} + + struct __cluster { + /// The first code point of the extended grapheme cluster. + /// + /// The first code point is used to estimate the width of the extended + /// grapheme cluster. + char32_t __code_point_; + + /// Points one beyond the last code unit in the extended grapheme cluster. + /// + /// It's expected the caller has the start position and thus can determine + /// the code unit range of the extended grapheme cluster. + _Iterator __last_; + }; + + _LIBCPP_HIDE_FROM_ABI constexpr __cluster __consume() { + _LIBCPP_ASSERT_UNCATEGORIZED( + __next_prop_ != __extended_grapheme_custer_property_boundary::__property::__eot, + "can't move beyond the end of input"); + + char32_t __code_point = __next_code_point_; + if (!__code_point_view_.__at_end()) + return {__code_point, __get_break()}; + + __next_prop_ = __extended_grapheme_custer_property_boundary::__property::__eot; + return {__code_point, __code_point_view_.__position()}; + } + +private: + __code_point_view<_CharT> __code_point_view_; + + char32_t __next_code_point_; + __extended_grapheme_custer_property_boundary::__property __next_prop_; + + _LIBCPP_HIDE_FROM_ABI constexpr _Iterator __get_break() { + bool __ri_break_allowed = true; + bool __has_extened_pictographic = false; + while (true) { + _Iterator __result = __code_point_view_.__position(); + __extended_grapheme_custer_property_boundary::__property __prev = __next_prop_; + if (__code_point_view_.__at_end()) { + __next_prop_ = __extended_grapheme_custer_property_boundary::__property::__eot; + return __result; + } + __next_code_point_ = __code_point_view_.__consume().__code_point; + __next_prop_ = __extended_grapheme_custer_property_boundary::__get_property(__next_code_point_); + + __has_extened_pictographic |= + __prev == __extended_grapheme_custer_property_boundary::__property::__Extended_Pictographic; + + if (__at_extended_grapheme_cluster_break(__ri_break_allowed, __has_extened_pictographic, __prev, __next_prop_)) + return __result; + } + } +}; + +template +__extended_grapheme_cluster_view(_Iterator, _Iterator) -> __extended_grapheme_cluster_view>; + +# else // _LIBCPP_HAS_NO_UNICODE + +// For ASCII every character is a "code point". +// This makes it easier to write code agnostic of the _LIBCPP_HAS_NO_UNICODE define. +template +class __code_point_view { + using _Iterator = typename basic_string_view<_CharT>::const_iterator; + +public: + _LIBCPP_HIDE_FROM_ABI constexpr explicit __code_point_view(_Iterator __first, _Iterator __last) + : __first_(__first), __last_(__last) {} + + _LIBCPP_HIDE_FROM_ABI constexpr bool __at_end() const noexcept { return __first_ == __last_; } + _LIBCPP_HIDE_FROM_ABI constexpr _Iterator __position() const noexcept { return __first_; } + + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __consume_result __consume() noexcept { + _LIBCPP_ASSERT_UNCATEGORIZED(__first_ != __last_, "can't move beyond the end of input"); + return {static_cast(*__first_++)}; + } + +private: + _Iterator __first_; + _Iterator __last_; +}; + +# endif // _LIBCPP_HAS_NO_UNICODE + +} // namespace __unicode + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_UNICODE_H diff --git a/lib/libcxx/include/__format/width_estimation_table.h b/lib/libcxx/include/__format/width_estimation_table.h new file mode 100644 index 0000000..cfb4889 --- /dev/null +++ b/lib/libcxx/include/__format/width_estimation_table.h @@ -0,0 +1,271 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// WARNING, this entire header is generated by +// utils/generate_width_estimation_table.py +// DO NOT MODIFY! + +// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE +// +// See Terms of Use +// for definitions of Unicode Inc.'s Data Files and Software. +// +// NOTICE TO USER: Carefully read the following legal agreement. +// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S +// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"), +// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE +// TERMS AND CONDITIONS OF THIS AGREEMENT. +// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE +// THE DATA FILES OR SOFTWARE. +// +// COPYRIGHT AND PERMISSION NOTICE +// +// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved. +// Distributed under the Terms of Use in https://www.unicode.org/copyright.html. +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of the Unicode data files and any associated documentation +// (the "Data Files") or Unicode software and any associated documentation +// (the "Software") to deal in the Data Files or Software +// without restriction, including without limitation the rights to use, +// copy, modify, merge, publish, distribute, and/or sell copies of +// the Data Files or Software, and to permit persons to whom the Data Files +// or Software are furnished to do so, provided that either +// (a) this copyright and permission notice appear with all copies +// of the Data Files or Software, or +// (b) this copyright and permission notice appear in associated +// Documentation. +// +// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF +// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT OF THIRD PARTY RIGHTS. +// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS +// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL +// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, +// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER +// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +// PERFORMANCE OF THE DATA FILES OR SOFTWARE. +// +// Except as contained in this notice, the name of a copyright holder +// shall not be used in advertising or otherwise to promote the sale, +// use or other dealings in these Data Files or Software without prior +// written authorization of the copyright holder. + +#ifndef _LIBCPP___FORMAT_WIDTH_ESTIMATION_TABLE_H +#define _LIBCPP___FORMAT_WIDTH_ESTIMATION_TABLE_H + +#include <__algorithm/ranges_upper_bound.h> +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace __width_estimation_table { + +/// The entries of the characters with an estimated width of 2. +/// +/// Contains the entries for [format.string.std]/12 +/// - Any code point with the East_Asian_Width="W" or East_Asian_Width="F" +/// Derived Extracted Property as described by UAX #44 +/// - U+4DC0 - U+4DFF (Yijing Hexagram Symbols) +/// - U+1F300 - U+1F5FF (Miscellaneous Symbols and Pictographs) +/// - U+1F900 - U+1F9FF (Supplemental Symbols and Pictographs) +/// +/// The data is generated from +/// - https://www.unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt +/// - The "overrides" in [format.string.std]/12 +/// +/// The format of EastAsianWidth.txt is two fields separated by a semicolon. +/// Field 0: Unicode code point value or range of code point values +/// Field 1: East_Asian_Width property, consisting of one of the following values: +/// "A", "F", "H", "N", "Na", "W" +/// - All code points, assigned or unassigned, that are not listed +/// explicitly are given the value "N". +/// - The unassigned code points in the following blocks default to "W": +/// CJK Unified Ideographs Extension A: U+3400..U+4DBF +/// CJK Unified Ideographs: U+4E00..U+9FFF +/// CJK Compatibility Ideographs: U+F900..U+FAFF +/// - All undesignated code points in Planes 2 and 3, whether inside or +/// outside of allocated blocks, default to "W": +/// Plane 2: U+20000..U+2FFFD +/// Plane 3: U+30000..U+3FFFD +/// +/// The table is similar to the table +/// __extended_grapheme_custer_property_boundary::__entries +/// which explains the details of these classes. The only difference is this +/// table lacks a property, thus having more bits available for the size. +/// +/// The maximum code point that has an estimated width of 2 is U+3FFFD. This +/// value can be encoded in 18 bits. Thus the upper 3 bits of the code point +/// are always 0. These 3 bits are used to enlarge the offset range. This +/// optimization reduces the table in Unicode 15 from 184 to 104 entries, +/// saving 320 bytes. +/// +/// The data has 2 values: +/// - bits [0, 13] The size of the range, allowing 16384 elements. +/// - bits [14, 31] The lower bound code point of the range. The upper bound of +/// the range is lower bound + size. +inline constexpr uint32_t __entries[108] = { + 0x0440005f /* 00001100 - 0000115f [ 96] */, // + 0x08c68001 /* 0000231a - 0000231b [ 2] */, // + 0x08ca4001 /* 00002329 - 0000232a [ 2] */, // + 0x08fa4003 /* 000023e9 - 000023ec [ 4] */, // + 0x08fc0000 /* 000023f0 - 000023f0 [ 1] */, // + 0x08fcc000 /* 000023f3 - 000023f3 [ 1] */, // + 0x097f4001 /* 000025fd - 000025fe [ 2] */, // + 0x09850001 /* 00002614 - 00002615 [ 2] */, // + 0x0992000b /* 00002648 - 00002653 [ 12] */, // + 0x099fc000 /* 0000267f - 0000267f [ 1] */, // + 0x09a4c000 /* 00002693 - 00002693 [ 1] */, // + 0x09a84000 /* 000026a1 - 000026a1 [ 1] */, // + 0x09aa8001 /* 000026aa - 000026ab [ 2] */, // + 0x09af4001 /* 000026bd - 000026be [ 2] */, // + 0x09b10001 /* 000026c4 - 000026c5 [ 2] */, // + 0x09b38000 /* 000026ce - 000026ce [ 1] */, // + 0x09b50000 /* 000026d4 - 000026d4 [ 1] */, // + 0x09ba8000 /* 000026ea - 000026ea [ 1] */, // + 0x09bc8001 /* 000026f2 - 000026f3 [ 2] */, // + 0x09bd4000 /* 000026f5 - 000026f5 [ 1] */, // + 0x09be8000 /* 000026fa - 000026fa [ 1] */, // + 0x09bf4000 /* 000026fd - 000026fd [ 1] */, // + 0x09c14000 /* 00002705 - 00002705 [ 1] */, // + 0x09c28001 /* 0000270a - 0000270b [ 2] */, // + 0x09ca0000 /* 00002728 - 00002728 [ 1] */, // + 0x09d30000 /* 0000274c - 0000274c [ 1] */, // + 0x09d38000 /* 0000274e - 0000274e [ 1] */, // + 0x09d4c002 /* 00002753 - 00002755 [ 3] */, // + 0x09d5c000 /* 00002757 - 00002757 [ 1] */, // + 0x09e54002 /* 00002795 - 00002797 [ 3] */, // + 0x09ec0000 /* 000027b0 - 000027b0 [ 1] */, // + 0x09efc000 /* 000027bf - 000027bf [ 1] */, // + 0x0ac6c001 /* 00002b1b - 00002b1c [ 2] */, // + 0x0ad40000 /* 00002b50 - 00002b50 [ 1] */, // + 0x0ad54000 /* 00002b55 - 00002b55 [ 1] */, // + 0x0ba00019 /* 00002e80 - 00002e99 [ 26] */, // + 0x0ba6c058 /* 00002e9b - 00002ef3 [ 89] */, // + 0x0bc000d5 /* 00002f00 - 00002fd5 [ 214] */, // + 0x0bfc000b /* 00002ff0 - 00002ffb [ 12] */, // + 0x0c00003e /* 00003000 - 0000303e [ 63] */, // + 0x0c104055 /* 00003041 - 00003096 [ 86] */, // + 0x0c264066 /* 00003099 - 000030ff [ 103] */, // + 0x0c41402a /* 00003105 - 0000312f [ 43] */, // + 0x0c4c405d /* 00003131 - 0000318e [ 94] */, // + 0x0c640053 /* 00003190 - 000031e3 [ 84] */, // + 0x0c7c002e /* 000031f0 - 0000321e [ 47] */, // + 0x0c880027 /* 00003220 - 00003247 [ 40] */, // + 0x0c943fff /* 00003250 - 0000724f [16384] */, // + 0x1c94323c /* 00007250 - 0000a48c [12861] */, // + 0x29240036 /* 0000a490 - 0000a4c6 [ 55] */, // + 0x2a58001c /* 0000a960 - 0000a97c [ 29] */, // + 0x2b002ba3 /* 0000ac00 - 0000d7a3 [11172] */, // + 0x3e4001ff /* 0000f900 - 0000faff [ 512] */, // + 0x3f840009 /* 0000fe10 - 0000fe19 [ 10] */, // + 0x3f8c0022 /* 0000fe30 - 0000fe52 [ 35] */, // + 0x3f950012 /* 0000fe54 - 0000fe66 [ 19] */, // + 0x3f9a0003 /* 0000fe68 - 0000fe6b [ 4] */, // + 0x3fc0405f /* 0000ff01 - 0000ff60 [ 96] */, // + 0x3ff80006 /* 0000ffe0 - 0000ffe6 [ 7] */, // + 0x5bf80004 /* 00016fe0 - 00016fe4 [ 5] */, // + 0x5bfc0001 /* 00016ff0 - 00016ff1 [ 2] */, // + 0x5c0017f7 /* 00017000 - 000187f7 [ 6136] */, // + 0x620004d5 /* 00018800 - 00018cd5 [ 1238] */, // + 0x63400008 /* 00018d00 - 00018d08 [ 9] */, // + 0x6bfc0003 /* 0001aff0 - 0001aff3 [ 4] */, // + 0x6bfd4006 /* 0001aff5 - 0001affb [ 7] */, // + 0x6bff4001 /* 0001affd - 0001affe [ 2] */, // + 0x6c000122 /* 0001b000 - 0001b122 [ 291] */, // + 0x6c4c8000 /* 0001b132 - 0001b132 [ 1] */, // + 0x6c540002 /* 0001b150 - 0001b152 [ 3] */, // + 0x6c554000 /* 0001b155 - 0001b155 [ 1] */, // + 0x6c590003 /* 0001b164 - 0001b167 [ 4] */, // + 0x6c5c018b /* 0001b170 - 0001b2fb [ 396] */, // + 0x7c010000 /* 0001f004 - 0001f004 [ 1] */, // + 0x7c33c000 /* 0001f0cf - 0001f0cf [ 1] */, // + 0x7c638000 /* 0001f18e - 0001f18e [ 1] */, // + 0x7c644009 /* 0001f191 - 0001f19a [ 10] */, // + 0x7c800002 /* 0001f200 - 0001f202 [ 3] */, // + 0x7c84002b /* 0001f210 - 0001f23b [ 44] */, // + 0x7c900008 /* 0001f240 - 0001f248 [ 9] */, // + 0x7c940001 /* 0001f250 - 0001f251 [ 2] */, // + 0x7c980005 /* 0001f260 - 0001f265 [ 6] */, // + 0x7cc0034f /* 0001f300 - 0001f64f [ 848] */, // + 0x7da00045 /* 0001f680 - 0001f6c5 [ 70] */, // + 0x7db30000 /* 0001f6cc - 0001f6cc [ 1] */, // + 0x7db40002 /* 0001f6d0 - 0001f6d2 [ 3] */, // + 0x7db54002 /* 0001f6d5 - 0001f6d7 [ 3] */, // + 0x7db70003 /* 0001f6dc - 0001f6df [ 4] */, // + 0x7dbac001 /* 0001f6eb - 0001f6ec [ 2] */, // + 0x7dbd0008 /* 0001f6f4 - 0001f6fc [ 9] */, // + 0x7df8000b /* 0001f7e0 - 0001f7eb [ 12] */, // + 0x7dfc0000 /* 0001f7f0 - 0001f7f0 [ 1] */, // + 0x7e4000ff /* 0001f900 - 0001f9ff [ 256] */, // + 0x7e9c000c /* 0001fa70 - 0001fa7c [ 13] */, // + 0x7ea00008 /* 0001fa80 - 0001fa88 [ 9] */, // + 0x7ea4002d /* 0001fa90 - 0001fabd [ 46] */, // + 0x7eafc006 /* 0001fabf - 0001fac5 [ 7] */, // + 0x7eb3800d /* 0001face - 0001fadb [ 14] */, // + 0x7eb80008 /* 0001fae0 - 0001fae8 [ 9] */, // + 0x7ebc0008 /* 0001faf0 - 0001faf8 [ 9] */, // + 0x80003fff /* 00020000 - 00023fff [16384] */, // + 0x90003fff /* 00024000 - 00027fff [16384] */, // + 0xa0003fff /* 00028000 - 0002bfff [16384] */, // + 0xb0003ffd /* 0002c000 - 0002fffd [16382] */, // + 0xc0003fff /* 00030000 - 00033fff [16384] */, // + 0xd0003fff /* 00034000 - 00037fff [16384] */, // + 0xe0003fff /* 00038000 - 0003bfff [16384] */, // + 0xf0003ffd /* 0003c000 - 0003fffd [16382] */}; + +/// The upper bound entry of EastAsianWidth.txt. +/// +/// Values greater than this value may have more than 18 significant bits. +/// They always have a width of 1. This property makes it possible to store +/// the table in its compact form. +inline constexpr uint32_t __table_upper_bound = 0x0003fffd; + +/// Returns the estimated width of a Unicode code point. +/// +/// \pre The code point is a valid Unicode code point. +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int __estimated_width(const char32_t __code_point) noexcept { + // Since __table_upper_bound contains the unshifted range do the + // comparison without shifting. + if (__code_point > __table_upper_bound) [[unlikely]] + return 1; + + // When the code-point is less than the first element in the table + // the lookup is quite expensive. Since quite some scripts are in + // that range, it makes sense to validate that first. + // The std_format_spec_string_unicode benchmark gives a measurable + // improvement. + if (__code_point < (__entries[0] >> 14)) + return 1; + + ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 14) | 0x3fffu) - __entries; + if (__i == 0) + return 1; + + --__i; + uint32_t __upper_bound = (__entries[__i] >> 14) + (__entries[__i] & 0x3fffu); + return 1 + (__code_point <= __upper_bound); +} + +} // namespace __width_estimation_table + +#endif //_LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_WIDTH_ESTIMATION_TABLE_H diff --git a/lib/libcxx/include/__format/write_escaped.h b/lib/libcxx/include/__format/write_escaped.h new file mode 100644 index 0000000..8c51d0b --- /dev/null +++ b/lib/libcxx/include/__format/write_escaped.h @@ -0,0 +1,222 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FORMAT_WRITE_ESCAPED_H +#define _LIBCPP___FORMAT_WRITE_ESCAPED_H + +#include <__algorithm/ranges_copy.h> +#include <__algorithm/ranges_for_each.h> +#include <__charconv/to_chars_integral.h> +#include <__charconv/to_chars_result.h> +#include <__chrono/statically_widen.h> +#include <__format/escaped_output_table.h> +#include <__format/formatter_output.h> +#include <__format/parser_std_format_spec.h> +#include <__format/unicode.h> +#include <__iterator/back_insert_iterator.h> +#include <__memory/addressof.h> +#include <__system_error/errc.h> +#include <__type_traits/make_unsigned.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + + +namespace __formatter { + +#if _LIBCPP_STD_VER >= 20 + +/// Writes a string using format's width estimation algorithm. +/// +/// \note When \c _LIBCPP_HAS_NO_UNICODE is defined the function assumes the +/// input is ASCII. +template +_LIBCPP_HIDE_FROM_ABI auto __write_string( + basic_string_view<_CharT> __str, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_CharT> __specs) -> decltype(__out_it) { + if (!__specs.__has_precision()) + return __formatter::__write_string_no_precision(__str, _VSTD::move(__out_it), __specs); + + int __size = __formatter::__truncate(__str, __specs.__precision_); + + return __formatter::__write(__str.begin(), __str.end(), _VSTD::move(__out_it), __specs, __size); +} + +# endif // _LIBCPP_STD_VER >= 20 +# if _LIBCPP_STD_VER >= 23 + +struct __nul_terminator {}; + +template +_LIBCPP_HIDE_FROM_ABI bool operator==(const _CharT* __cstr, __nul_terminator) { + return *__cstr == _CharT('\0'); +} + +template +_LIBCPP_HIDE_FROM_ABI void +__write_escaped_code_unit(basic_string<_CharT>& __str, char32_t __value, const _CharT* __prefix) { + back_insert_iterator __out_it{__str}; + std::ranges::copy(__prefix, __nul_terminator{}, __out_it); + + char __buffer[8]; + to_chars_result __r = std::to_chars(std::begin(__buffer), std::end(__buffer), __value, 16); + _LIBCPP_ASSERT_UNCATEGORIZED(__r.ec == errc(0), "Internal buffer too small"); + std::ranges::copy(std::begin(__buffer), __r.ptr, __out_it); + + __str += _CharT('}'); +} + +// [format.string.escaped]/2.2.1.2 +// ... +// then the sequence \u{hex-digit-sequence} is appended to E, where +// hex-digit-sequence is the shortest hexadecimal representation of C using +// lower-case hexadecimal digits. +template +_LIBCPP_HIDE_FROM_ABI void __write_well_formed_escaped_code_unit(basic_string<_CharT>& __str, char32_t __value) { + __formatter::__write_escaped_code_unit(__str, __value, _LIBCPP_STATICALLY_WIDEN(_CharT, "\\u{")); +} + +// [format.string.escaped]/2.2.3 +// Otherwise (X is a sequence of ill-formed code units), each code unit U is +// appended to E in order as the sequence \x{hex-digit-sequence}, where +// hex-digit-sequence is the shortest hexadecimal representation of U using +// lower-case hexadecimal digits. +template +_LIBCPP_HIDE_FROM_ABI void __write_escape_ill_formed_code_unit(basic_string<_CharT>& __str, char32_t __value) { + __formatter::__write_escaped_code_unit(__str, __value, _LIBCPP_STATICALLY_WIDEN(_CharT, "\\x{")); +} + +template +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool __is_escaped_sequence_written(basic_string<_CharT>& __str, char32_t __value) { +# ifdef _LIBCPP_HAS_NO_UNICODE + // For ASCII assume everything above 127 is printable. + if (__value > 127) + return false; +# endif + + if (!__escaped_output_table::__needs_escape(__value)) + return false; + + __formatter::__write_well_formed_escaped_code_unit(__str, __value); + return true; +} + +template +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr char32_t __to_char32(_CharT __value) { + return static_cast>(__value); +} + +enum class _LIBCPP_ENUM_VIS __escape_quotation_mark { __apostrophe, __double_quote }; + +// [format.string.escaped]/2 +template +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool +__is_escaped_sequence_written(basic_string<_CharT>& __str, char32_t __value, __escape_quotation_mark __mark) { + // 2.2.1.1 - Mapped character in [tab:format.escape.sequences] + switch (__value) { + case _CharT('\t'): + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, "\\t"); + return true; + case _CharT('\n'): + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, "\\n"); + return true; + case _CharT('\r'): + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, "\\r"); + return true; + case _CharT('\''): + if (__mark == __escape_quotation_mark::__apostrophe) + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, R"(\')"); + else + __str += __value; + return true; + case _CharT('"'): + if (__mark == __escape_quotation_mark::__double_quote) + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, R"(\")"); + else + __str += __value; + return true; + case _CharT('\\'): + __str += _LIBCPP_STATICALLY_WIDEN(_CharT, R"(\\)"); + return true; + + // 2.2.1.2 - Space + case _CharT(' '): + __str += __value; + return true; + } + + // 2.2.2 + // Otherwise, if X is a shift sequence, the effect on E and further + // decoding of S is unspecified. + // For now shift sequences are ignored and treated as Unicode. Other parts + // of the format library do the same. It's unknown how ostream treats them. + // TODO FMT determine what to do with shift sequences. + + // 2.2.1.2.1 and 2.2.1.2.2 - Escape + return __formatter::__is_escaped_sequence_written(__str, __formatter::__to_char32(__value)); +} + +template +_LIBCPP_HIDE_FROM_ABI void +__escape(basic_string<_CharT>& __str, basic_string_view<_CharT> __values, __escape_quotation_mark __mark) { + __unicode::__code_point_view<_CharT> __view{__values.begin(), __values.end()}; + + while (!__view.__at_end()) { + auto __first = __view.__position(); + typename __unicode::__consume_result __result = __view.__consume(); + if (__result.__status == __unicode::__consume_result::__ok) { + if (!__formatter::__is_escaped_sequence_written(__str, __result.__code_point, __mark)) + // 2.2.1.3 - Add the character + ranges::copy(__first, __view.__position(), std::back_insert_iterator(__str)); + } else { + // 2.2.3 sequence of ill-formed code units + ranges::for_each(__first, __view.__position(), [&](_CharT __value) { + __formatter::__write_escape_ill_formed_code_unit(__str, __formatter::__to_char32(__value)); + }); + } + } +} + +template +_LIBCPP_HIDE_FROM_ABI auto +__format_escaped_char(_CharT __value, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_CharT> __specs) -> decltype(__out_it) { + basic_string<_CharT> __str; + __str += _CharT('\''); + __formatter::__escape(__str, basic_string_view{std::addressof(__value), 1}, __escape_quotation_mark::__apostrophe); + __str += _CharT('\''); + return __formatter::__write(__str.data(), __str.data() + __str.size(), _VSTD::move(__out_it), __specs, __str.size()); +} + +template +_LIBCPP_HIDE_FROM_ABI auto +__format_escaped_string(basic_string_view<_CharT> __values, + output_iterator auto __out_it, + __format_spec::__parsed_specifications<_CharT> __specs) -> decltype(__out_it) { + basic_string<_CharT> __str; + __str += _CharT('"'); + __formatter::__escape(__str, __values, __escape_quotation_mark::__double_quote); + __str += _CharT('"'); + return __formatter::__write_string(basic_string_view{__str}, _VSTD::move(__out_it), __specs); +} + +# endif // _LIBCPP_STD_VER >= 23 + +} // namespace __formatter + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FORMAT_WRITE_ESCAPED_H diff --git a/lib/libcxx/include/__functional/binary_function.h b/lib/libcxx/include/__functional/binary_function.h new file mode 100644 index 0000000..fdedb8b --- /dev/null +++ b/lib/libcxx/include/__functional/binary_function.h @@ -0,0 +1,54 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BINARY_FUNCTION_H +#define _LIBCPP___FUNCTIONAL_BINARY_FUNCTION_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) + +template +struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binary_function +{ + typedef _Arg1 first_argument_type; + typedef _Arg2 second_argument_type; + typedef _Result result_type; +}; + +#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) + +template struct __binary_function_keep_layout_base { +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using first_argument_type _LIBCPP_DEPRECATED_IN_CXX17 = _Arg1; + using second_argument_type _LIBCPP_DEPRECATED_IN_CXX17 = _Arg2; + using result_type _LIBCPP_DEPRECATED_IN_CXX17 = _Result; +#endif +}; + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) +_LIBCPP_DIAGNOSTIC_PUSH +_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") +template +using __binary_function = binary_function<_Arg1, _Arg2, _Result>; +_LIBCPP_DIAGNOSTIC_POP +#else +template +using __binary_function = __binary_function_keep_layout_base<_Arg1, _Arg2, _Result>; +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BINARY_FUNCTION_H diff --git a/lib/libcxx/include/__functional/binary_negate.h b/lib/libcxx/include/__functional/binary_negate.h new file mode 100644 index 0000000..73ecea9 --- /dev/null +++ b/lib/libcxx/include/__functional/binary_negate.h @@ -0,0 +1,50 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H +#define _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H + +#include <__config> +#include <__functional/binary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 binary_negate + : public __binary_function +{ + _Predicate __pred_; +public: + _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_SINCE_CXX14 + binary_negate(const _Predicate& __pred) : __pred_(__pred) {} + + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const typename _Predicate::first_argument_type& __x, + const typename _Predicate::second_argument_type& __y) const + {return !__pred_(__x, __y);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY +binary_negate<_Predicate> +not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} + +#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H diff --git a/lib/libcxx/include/__functional/bind.h b/lib/libcxx/include/__functional/bind.h new file mode 100644 index 0000000..398cb3d --- /dev/null +++ b/lib/libcxx/include/__functional/bind.h @@ -0,0 +1,386 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BIND_H +#define _LIBCPP___FUNCTIONAL_BIND_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/weak_result_type.h> +#include <__type_traits/decay.h> +#include <__type_traits/is_reference_wrapper.h> +#include <__type_traits/is_void.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct is_bind_expression : _If< + _IsSame<_Tp, __remove_cvref_t<_Tp> >::value, + false_type, + is_bind_expression<__remove_cvref_t<_Tp> > +> {}; + +#if _LIBCPP_STD_VER >= 17 +template +inline constexpr bool is_bind_expression_v = is_bind_expression<_Tp>::value; +#endif + +template +struct is_placeholder : _If< + _IsSame<_Tp, __remove_cvref_t<_Tp> >::value, + integral_constant, + is_placeholder<__remove_cvref_t<_Tp> > +> {}; + +#if _LIBCPP_STD_VER >= 17 +template +inline constexpr int is_placeholder_v = is_placeholder<_Tp>::value; +#endif + +namespace placeholders +{ + +template struct __ph {}; + +// C++17 recommends that we implement placeholders as `inline constexpr`, but allows +// implementing them as `extern `. Libc++ implements them as +// `extern const` in all standard modes to avoid an ABI break in C++03: making them +// `inline constexpr` requires removing their definition in the shared library to +// avoid ODR violations, which is an ABI break. +// +// In practice, since placeholders are empty, `extern const` is almost impossible +// to distinguish from `inline constexpr` from a usage stand point. +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<1> _1; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<2> _2; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<3> _3; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<4> _4; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<5> _5; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<6> _6; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<7> _7; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<8> _8; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<9> _9; +_LIBCPP_EXPORTED_FROM_ABI extern const __ph<10> _10; + +} // namespace placeholders + +template +struct is_placeholder > + : public integral_constant {}; + + +#ifndef _LIBCPP_CXX03_LANG + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +_Tp& +__mu(reference_wrapper<_Tp> __t, _Uj&) +{ + return __t.get(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename __invoke_of<_Ti&, _Uj...>::type +__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) +{ + return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename __enable_if_t +< + is_bind_expression<_Ti>::value, + __invoke_of<_Ti&, _Uj...> +>::type +__mu(_Ti& __ti, tuple<_Uj...>& __uj) +{ + typedef typename __make_tuple_indices::type __indices; + return _VSTD::__mu_expand(__ti, __uj, __indices()); +} + +template +struct __mu_return2 {}; + +template +struct __mu_return2 +{ + typedef typename tuple_element::value - 1, _Uj>::type type; +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename enable_if +< + 0 < is_placeholder<_Ti>::value, + typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type +>::type +__mu(_Ti&, _Uj& __uj) +{ + const size_t __indx = is_placeholder<_Ti>::value - 1; + return _VSTD::forward::type>(_VSTD::get<__indx>(__uj)); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename enable_if +< + !is_bind_expression<_Ti>::value && + is_placeholder<_Ti>::value == 0 && + !__is_reference_wrapper<_Ti>::value, + _Ti& +>::type +__mu(_Ti& __ti, _Uj&) +{ + return __ti; +} + +template +struct __mu_return_impl; + +template +struct __mu_return_invokable // false +{ + typedef __nat type; +}; + +template +struct __mu_return_invokable +{ + typedef typename __invoke_of<_Ti&, _Uj...>::type type; +}; + +template +struct __mu_return_impl<_Ti, false, true, false, tuple<_Uj...> > + : public __mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> +{ +}; + +template +struct __mu_return_impl<_Ti, false, false, true, _TupleUj> +{ + typedef typename tuple_element::value - 1, + _TupleUj>::type&& type; +}; + +template +struct __mu_return_impl<_Ti, true, false, false, _TupleUj> +{ + typedef typename _Ti::type& type; +}; + +template +struct __mu_return_impl<_Ti, false, false, false, _TupleUj> +{ + typedef _Ti& type; +}; + +template +struct __mu_return + : public __mu_return_impl<_Ti, + __is_reference_wrapper<_Ti>::value, + is_bind_expression<_Ti>::value, + 0 < is_placeholder<_Ti>::value && + is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, + _TupleUj> +{ +}; + +template +struct __is_valid_bind_return +{ + static const bool value = false; +}; + +template +struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> +{ + static const bool value = __invokable<_Fp, + typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; +}; + +template +struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> +{ + static const bool value = __invokable<_Fp, + typename __mu_return::type...>::value; +}; + +template ::value> +struct __bind_return; + +template +struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> +{ + typedef typename __invoke_of + < + _Fp&, + typename __mu_return + < + _BoundArgs, + _TupleUj + >::type... + >::type type; +}; + +template +struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> +{ + typedef typename __invoke_of + < + _Fp&, + typename __mu_return + < + const _BoundArgs, + _TupleUj + >::type... + >::type type; +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +typename __bind_return<_Fp, _BoundArgs, _Args>::type +__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, + _Args&& __args) +{ + return _VSTD::__invoke(__f, _VSTD::__mu(_VSTD::get<_Indx>(__bound_args), __args)...); +} + +template +class __bind : public __weak_result_type<__decay_t<_Fp> > +{ +protected: + using _Fd = __decay_t<_Fp>; + typedef tuple<__decay_t<_BoundArgs>...> _Td; +private: + _Fd __f_; + _Td __bound_args_; + + typedef typename __make_tuple_indices::type __indices; +public: + template ::value && + !is_same<__libcpp_remove_reference_t<_Gp>, + __bind>::value + >::type> + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + explicit __bind(_Gp&& __f, _BA&& ...__bound_args) + : __f_(_VSTD::forward<_Gp>(__f)), + __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type + operator()(_Args&& ...__args) + { + return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), + tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); + } + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename __bind_return >::type + operator()(_Args&& ...__args) const + { + return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), + tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); + } +}; + +template +struct is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; + +template +class __bind_r + : public __bind<_Fp, _BoundArgs...> +{ + typedef __bind<_Fp, _BoundArgs...> base; + typedef typename base::_Fd _Fd; + typedef typename base::_Td _Td; +public: + typedef _Rp result_type; + + + template ::value && + !is_same<__libcpp_remove_reference_t<_Gp>, + __bind_r>::value + >::type> + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) + : base(_VSTD::forward<_Gp>(__f), + _VSTD::forward<_BA>(__bound_args)...) {} + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename enable_if + < + is_convertible >::type, + result_type>::value || is_void<_Rp>::value, + result_type + >::type + operator()(_Args&& ...__args) + { + typedef __invoke_void_return_wrapper<_Rp> _Invoker; + return _Invoker::__call(static_cast(*this), _VSTD::forward<_Args>(__args)...); + } + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename enable_if + < + is_convertible >::type, + result_type>::value || is_void<_Rp>::value, + result_type + >::type + operator()(_Args&& ...__args) const + { + typedef __invoke_void_return_wrapper<_Rp> _Invoker; + return _Invoker::__call(static_cast(*this), _VSTD::forward<_Args>(__args)...); + } +}; + +template +struct is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__bind<_Fp, _BoundArgs...> +bind(_Fp&& __f, _BoundArgs&&... __bound_args) +{ + typedef __bind<_Fp, _BoundArgs...> type; + return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__bind_r<_Rp, _Fp, _BoundArgs...> +bind(_Fp&& __f, _BoundArgs&&... __bound_args) +{ + typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; + return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); +} + +#endif // _LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BIND_H diff --git a/lib/libcxx/include/__functional/bind_back.h b/lib/libcxx/include/__functional/bind_back.h new file mode 100644 index 0000000..71dc63c --- /dev/null +++ b/lib/libcxx/include/__functional/bind_back.h @@ -0,0 +1,64 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BIND_BACK_H +#define _LIBCPP___FUNCTIONAL_BIND_BACK_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/perfect_forward.h> +#include <__type_traits/decay.h> +#include <__utility/forward.h> +#include <__utility/integer_sequence.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template > +struct __bind_back_op; + +template +struct __bind_back_op<_NBound, index_sequence<_Ip...>> { + template + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Fn&& __f, _BoundArgs&& __bound_args, _Args&&... __args) const + noexcept(noexcept(_VSTD::invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)..., _VSTD::get<_Ip>(_VSTD::forward<_BoundArgs>(__bound_args))...))) + -> decltype( _VSTD::invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)..., _VSTD::get<_Ip>(_VSTD::forward<_BoundArgs>(__bound_args))...)) + { return _VSTD::invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)..., _VSTD::get<_Ip>(_VSTD::forward<_BoundArgs>(__bound_args))...); } +}; + +template +struct __bind_back_t : __perfect_forward<__bind_back_op>, _Fn, _BoundArgs> { + using __perfect_forward<__bind_back_op>, _Fn, _BoundArgs>::__perfect_forward; +}; + +template , _Fn>, + is_move_constructible>, + is_constructible, _Args>..., + is_move_constructible>... + >::value +>> +_LIBCPP_HIDE_FROM_ABI +constexpr auto __bind_back(_Fn&& __f, _Args&&... __args) + noexcept(noexcept(__bind_back_t, tuple...>>(_VSTD::forward<_Fn>(__f), _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)))) + -> decltype( __bind_back_t, tuple...>>(_VSTD::forward<_Fn>(__f), _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...))) + { return __bind_back_t, tuple...>>(_VSTD::forward<_Fn>(__f), _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)); } + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BIND_BACK_H diff --git a/lib/libcxx/include/__functional/bind_front.h b/lib/libcxx/include/__functional/bind_front.h new file mode 100644 index 0000000..72bb664 --- /dev/null +++ b/lib/libcxx/include/__functional/bind_front.h @@ -0,0 +1,62 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BIND_FRONT_H +#define _LIBCPP___FUNCTIONAL_BIND_FRONT_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/perfect_forward.h> +#include <__type_traits/conjunction.h> +#include <__type_traits/decay.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_move_constructible.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +struct __bind_front_op { + template + _LIBCPP_HIDE_FROM_ABI + constexpr auto operator()(_Args&& ...__args) const + noexcept(noexcept(_VSTD::invoke(_VSTD::forward<_Args>(__args)...))) + -> decltype( _VSTD::invoke(_VSTD::forward<_Args>(__args)...)) + { return _VSTD::invoke(_VSTD::forward<_Args>(__args)...); } +}; + +template +struct __bind_front_t : __perfect_forward<__bind_front_op, _Fn, _BoundArgs...> { + using __perfect_forward<__bind_front_op, _Fn, _BoundArgs...>::__perfect_forward; +}; + +template , _Fn>, + is_move_constructible>, + is_constructible, _Args>..., + is_move_constructible>... + >::value +>> +_LIBCPP_HIDE_FROM_ABI +constexpr auto bind_front(_Fn&& __f, _Args&&... __args) { + return __bind_front_t, decay_t<_Args>...>(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); +} + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BIND_FRONT_H diff --git a/lib/libcxx/include/__functional/binder1st.h b/lib/libcxx/include/__functional/binder1st.h new file mode 100644 index 0000000..78049d1 --- /dev/null +++ b/lib/libcxx/include/__functional/binder1st.h @@ -0,0 +1,53 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BINDER1ST_H +#define _LIBCPP___FUNCTIONAL_BINDER1ST_H + +#include <__config> +#include <__functional/unary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder1st + : public __unary_function +{ +protected: + _Operation op; + typename _Operation::first_argument_type value; +public: + _LIBCPP_INLINE_VISIBILITY binder1st(const _Operation& __x, + const typename _Operation::first_argument_type __y) + : op(__x), value(__y) {} + _LIBCPP_INLINE_VISIBILITY typename _Operation::result_type operator() + (typename _Operation::second_argument_type& __x) const + {return op(value, __x);} + _LIBCPP_INLINE_VISIBILITY typename _Operation::result_type operator() + (const typename _Operation::second_argument_type& __x) const + {return op(value, __x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +binder1st<_Operation> +bind1st(const _Operation& __op, const _Tp& __x) + {return binder1st<_Operation>(__op, __x);} + +#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BINDER1ST_H diff --git a/lib/libcxx/include/__functional/binder2nd.h b/lib/libcxx/include/__functional/binder2nd.h new file mode 100644 index 0000000..a322774 --- /dev/null +++ b/lib/libcxx/include/__functional/binder2nd.h @@ -0,0 +1,53 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BINDER2ND_H +#define _LIBCPP___FUNCTIONAL_BINDER2ND_H + +#include <__config> +#include <__functional/unary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder2nd + : public __unary_function +{ +protected: + _Operation op; + typename _Operation::second_argument_type value; +public: + _LIBCPP_INLINE_VISIBILITY + binder2nd(const _Operation& __x, const typename _Operation::second_argument_type __y) + : op(__x), value(__y) {} + _LIBCPP_INLINE_VISIBILITY typename _Operation::result_type operator() + ( typename _Operation::first_argument_type& __x) const + {return op(__x, value);} + _LIBCPP_INLINE_VISIBILITY typename _Operation::result_type operator() + (const typename _Operation::first_argument_type& __x) const + {return op(__x, value);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +binder2nd<_Operation> +bind2nd(const _Operation& __op, const _Tp& __x) + {return binder2nd<_Operation>(__op, __x);} + +#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_BINDER2ND_H diff --git a/lib/libcxx/include/__functional/boyer_moore_searcher.h b/lib/libcxx/include/__functional/boyer_moore_searcher.h new file mode 100644 index 0000000..0165e06 --- /dev/null +++ b/lib/libcxx/include/__functional/boyer_moore_searcher.h @@ -0,0 +1,320 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_BOYER_MOORE_SEARCHER_H +#define _LIBCPP___FUNCTIONAL_BOYER_MOORE_SEARCHER_H + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#include <__algorithm/fill_n.h> +#include <__config> +#include <__functional/hash.h> +#include <__functional/operations.h> +#include <__iterator/distance.h> +#include <__iterator/iterator_traits.h> +#include <__memory/shared_ptr.h> +#include <__type_traits/make_unsigned.h> +#include <__utility/pair.h> +#include +#include +#include + +#if _LIBCPP_STD_VER >= 17 + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class _BMSkipTable; + +// General case for BM data searching; use a map +template +class _BMSkipTable<_Key, _Value, _Hash, _BinaryPredicate, false> { +private: + using value_type = _Value; + using key_type = _Key; + + const value_type __default_value_; + unordered_map<_Key, _Value, _Hash, _BinaryPredicate> __table_; + +public: + _LIBCPP_HIDE_FROM_ABI + explicit _BMSkipTable(size_t __sz, value_type __default_value, _Hash __hash, _BinaryPredicate __pred) + : __default_value_(__default_value), + __table_(__sz, __hash, __pred) {} + + _LIBCPP_HIDE_FROM_ABI void insert(const key_type& __key, value_type __val) { + __table_[__key] = __val; + } + + _LIBCPP_HIDE_FROM_ABI value_type operator[](const key_type& __key) const { + auto __it = __table_.find(__key); + return __it == __table_.end() ? __default_value_ : __it->second; + } +}; + +// Special case small numeric values; use an array +template +class _BMSkipTable<_Key, _Value, _Hash, _BinaryPredicate, true> { +private: + using value_type = _Value; + using key_type = _Key; + + using unsigned_key_type = make_unsigned_t; + std::array __table_; + static_assert(numeric_limits::max() < 256); + +public: + _LIBCPP_HIDE_FROM_ABI explicit _BMSkipTable(size_t, value_type __default_value, _Hash, _BinaryPredicate) { + std::fill_n(__table_.data(), __table_.size(), __default_value); + } + + _LIBCPP_HIDE_FROM_ABI void insert(key_type __key, value_type __val) { + __table_[static_cast(__key)] = __val; + } + + _LIBCPP_HIDE_FROM_ABI value_type operator[](key_type __key) const { + return __table_[static_cast(__key)]; + } +}; + +template ::value_type>, + class _BinaryPredicate = equal_to<>> +class _LIBCPP_TEMPLATE_VIS boyer_moore_searcher { +private: + using difference_type = typename std::iterator_traits<_RandomAccessIterator1>::difference_type; + using value_type = typename std::iterator_traits<_RandomAccessIterator1>::value_type; + using __skip_table_type = _BMSkipTable + && sizeof(value_type) == 1 + && is_same_v<_Hash, hash> + && is_same_v<_BinaryPredicate, equal_to<>>>; + +public: + _LIBCPP_HIDE_FROM_ABI + boyer_moore_searcher(_RandomAccessIterator1 __first, + _RandomAccessIterator1 __last, + _Hash __hash = _Hash(), + _BinaryPredicate __pred = _BinaryPredicate()) + : __first_(__first), + __last_(__last), + __pred_(__pred), + __pattern_length_(__last - __first), + __skip_table_(std::make_shared<__skip_table_type>(__pattern_length_, -1, __hash, __pred_)), + __suffix_(std::__allocate_shared_unbounded_array( + allocator(), __pattern_length_ + 1)) { + difference_type __i = 0; + while (__first != __last) { + __skip_table_->insert(*__first, __i); + ++__first; + ++__i; + } + __build_suffix_table(__first_, __last_, __pred_); + } + + template + _LIBCPP_HIDE_FROM_ABI pair<_RandomAccessIterator2, _RandomAccessIterator2> + operator()(_RandomAccessIterator2 __first, _RandomAccessIterator2 __last) const { + static_assert(__is_same_uncvref::value_type, + typename iterator_traits<_RandomAccessIterator2>::value_type>::value, + "Corpus and Pattern iterators must point to the same type"); + if (__first == __last) + return std::make_pair(__last, __last); + if (__first_ == __last_) + return std::make_pair(__first, __first); + + if (__pattern_length_ > (__last - __first)) + return std::make_pair(__last, __last); + return __search(__first, __last); + } + +private: + _RandomAccessIterator1 __first_; + _RandomAccessIterator1 __last_; + _BinaryPredicate __pred_; + difference_type __pattern_length_; + shared_ptr<__skip_table_type> __skip_table_; + shared_ptr __suffix_; + + template + _LIBCPP_HIDE_FROM_ABI pair<_RandomAccessIterator2, _RandomAccessIterator2> + __search(_RandomAccessIterator2 __f, _RandomAccessIterator2 __l) const { + _RandomAccessIterator2 __current = __f; + const _RandomAccessIterator2 __last = __l - __pattern_length_; + const __skip_table_type& __skip_table = *__skip_table_; + + while (__current <= __last) { + difference_type __j = __pattern_length_; + while (__pred_(__first_[__j - 1], __current[__j - 1])) { + --__j; + if (__j == 0) + return std::make_pair(__current, __current + __pattern_length_); + } + + difference_type __k = __skip_table[__current[__j - 1]]; + difference_type __m = __j - __k - 1; + if (__k < __j && __m > __suffix_[__j]) + __current += __m; + else + __current += __suffix_[__j]; + } + return std::make_pair(__l, __l); + } + + template + _LIBCPP_HIDE_FROM_ABI void + __compute_bm_prefix(_Iterator __first, _Iterator __last, _BinaryPredicate __pred, _Container& __prefix) { + const size_t __count = __last - __first; + + __prefix[0] = 0; + size_t __k = 0; + + for (size_t __i = 1; __i != __count; ++__i) { + while (__k > 0 && !__pred(__first[__k], __first[__i])) + __k = __prefix[__k - 1]; + + if (__pred(__first[__k], __first[__i])) + ++__k; + __prefix[__i] = __k; + } + } + + _LIBCPP_HIDE_FROM_ABI void + __build_suffix_table(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _BinaryPredicate __pred) { + const size_t __count = __last - __first; + + if (__count == 0) + return; + + vector __scratch(__count); + + __compute_bm_prefix(__first, __last, __pred, __scratch); + for (size_t __i = 0; __i <= __count; ++__i) + __suffix_[__i] = __count - __scratch[__count - 1]; + + using _ReverseIter = reverse_iterator<_RandomAccessIterator1>; + __compute_bm_prefix(_ReverseIter(__last), _ReverseIter(__first), __pred, __scratch); + + for (size_t __i = 0; __i != __count; ++__i) { + const size_t __j = __count - __scratch[__i]; + const difference_type __k = __i - __scratch[__i] + 1; + + if (__suffix_[__j] > __k) + __suffix_[__j] = __k; + } + } +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(boyer_moore_searcher); + +template ::value_type>, + class _BinaryPredicate = equal_to<>> +class _LIBCPP_TEMPLATE_VIS boyer_moore_horspool_searcher { +private: + using difference_type = typename iterator_traits<_RandomAccessIterator1>::difference_type; + using value_type = typename iterator_traits<_RandomAccessIterator1>::value_type; + using __skip_table_type = _BMSkipTable + && sizeof(value_type) == 1 + && is_same_v<_Hash, hash> + && is_same_v<_BinaryPredicate, equal_to<>>>; +public: + _LIBCPP_HIDE_FROM_ABI + boyer_moore_horspool_searcher(_RandomAccessIterator1 __first, + _RandomAccessIterator1 __last, + _Hash __hash = _Hash(), + _BinaryPredicate __pred = _BinaryPredicate()) + : __first_(__first), + __last_(__last), + __pred_(__pred), + __pattern_length_(__last - __first), + __skip_table_(std::make_shared<__skip_table_type>(__pattern_length_, __pattern_length_, __hash, __pred_)) { + if (__first == __last) + return; + --__last; + difference_type __i = 0; + while (__first != __last) { + __skip_table_->insert(*__first, __pattern_length_ - 1 - __i); + ++__first; + ++__i; + } + } + + template + _LIBCPP_HIDE_FROM_ABI pair<_RandomAccessIterator2, _RandomAccessIterator2> + operator()(_RandomAccessIterator2 __first, _RandomAccessIterator2 __last) const { + static_assert(__is_same_uncvref::value_type, + typename std::iterator_traits<_RandomAccessIterator2>::value_type>::value, + "Corpus and Pattern iterators must point to the same type"); + if (__first == __last) + return std::make_pair(__last, __last); + if (__first_ == __last_) + return std::make_pair(__first, __first); + + if (__pattern_length_ > __last - __first) + return std::make_pair(__last, __last); + + return __search(__first, __last); + } + +private: + _RandomAccessIterator1 __first_; + _RandomAccessIterator1 __last_; + _BinaryPredicate __pred_; + difference_type __pattern_length_; + shared_ptr<__skip_table_type> __skip_table_; + + template + _LIBCPP_HIDE_FROM_ABI pair<_RandomAccessIterator2, _RandomAccessIterator2> + __search(_RandomAccessIterator2 __f, _RandomAccessIterator2 __l) const { + _RandomAccessIterator2 __current = __f; + const _RandomAccessIterator2 __last = __l - __pattern_length_; + const __skip_table_type& __skip_table = *__skip_table_; + + while (__current <= __last) { + difference_type __j = __pattern_length_; + while (__pred_(__first_[__j - 1], __current[__j - 1])) { + --__j; + if (__j == 0) + return std::make_pair(__current, __current + __pattern_length_); + } + __current += __skip_table[__current[__pattern_length_ - 1]]; + } + return std::make_pair(__l, __l); + } +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(boyer_moore_horspool_searcher); + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_STD_VER >= 17 + +#endif // _LIBCPP___FUNCTIONAL_BOYER_MOORE_SEARCHER_H diff --git a/lib/libcxx/include/__functional/compose.h b/lib/libcxx/include/__functional/compose.h new file mode 100644 index 0000000..80fcd70 --- /dev/null +++ b/lib/libcxx/include/__functional/compose.h @@ -0,0 +1,52 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_COMPOSE_H +#define _LIBCPP___FUNCTIONAL_COMPOSE_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/perfect_forward.h> +#include <__type_traits/decay.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +struct __compose_op { + template + _LIBCPP_HIDE_FROM_ABI + constexpr auto operator()(_Fn1&& __f1, _Fn2&& __f2, _Args&&... __args) const + noexcept(noexcept(_VSTD::invoke(_VSTD::forward<_Fn1>(__f1), _VSTD::invoke(_VSTD::forward<_Fn2>(__f2), _VSTD::forward<_Args>(__args)...)))) + -> decltype( _VSTD::invoke(_VSTD::forward<_Fn1>(__f1), _VSTD::invoke(_VSTD::forward<_Fn2>(__f2), _VSTD::forward<_Args>(__args)...))) + { return _VSTD::invoke(_VSTD::forward<_Fn1>(__f1), _VSTD::invoke(_VSTD::forward<_Fn2>(__f2), _VSTD::forward<_Args>(__args)...)); } +}; + +template +struct __compose_t : __perfect_forward<__compose_op, _Fn1, _Fn2> { + using __perfect_forward<__compose_op, _Fn1, _Fn2>::__perfect_forward; +}; + +template +_LIBCPP_HIDE_FROM_ABI +constexpr auto __compose(_Fn1&& __f1, _Fn2&& __f2) + noexcept(noexcept(__compose_t, decay_t<_Fn2>>(_VSTD::forward<_Fn1>(__f1), _VSTD::forward<_Fn2>(__f2)))) + -> decltype( __compose_t, decay_t<_Fn2>>(_VSTD::forward<_Fn1>(__f1), _VSTD::forward<_Fn2>(__f2))) + { return __compose_t, decay_t<_Fn2>>(_VSTD::forward<_Fn1>(__f1), _VSTD::forward<_Fn2>(__f2)); } + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_COMPOSE_H diff --git a/lib/libcxx/include/__functional/default_searcher.h b/lib/libcxx/include/__functional/default_searcher.h new file mode 100644 index 0000000..222b4c6 --- /dev/null +++ b/lib/libcxx/include/__functional/default_searcher.h @@ -0,0 +1,57 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_DEFAULT_SEARCHER_H +#define _LIBCPP___FUNCTIONAL_DEFAULT_SEARCHER_H + +#include <__algorithm/search.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/operations.h> +#include <__iterator/iterator_traits.h> +#include <__utility/pair.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +// default searcher +template> +class _LIBCPP_TEMPLATE_VIS default_searcher { +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + default_searcher(_ForwardIterator __f, _ForwardIterator __l, + _BinaryPredicate __p = _BinaryPredicate()) + : __first_(__f), __last_(__l), __pred_(__p) {} + + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + pair<_ForwardIterator2, _ForwardIterator2> + operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const + { + auto __proj = __identity(); + return std::__search_impl(__f, __l, __first_, __last_, __pred_, __proj, __proj); + } + +private: + _ForwardIterator __first_; + _ForwardIterator __last_; + _BinaryPredicate __pred_; +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(default_searcher); + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_DEFAULT_SEARCHER_H diff --git a/lib/libcxx/include/__functional/function.h b/lib/libcxx/include/__functional/function.h new file mode 100644 index 0000000..3c6e3f4 --- /dev/null +++ b/lib/libcxx/include/__functional/function.h @@ -0,0 +1,1232 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_FUNCTION_H +#define _LIBCPP___FUNCTIONAL_FUNCTION_H + +#include <__assert> +#include <__config> +#include <__exception/exception.h> +#include <__functional/binary_function.h> +#include <__functional/invoke.h> +#include <__functional/unary_function.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include <__memory/allocator.h> +#include <__memory/allocator_destructor.h> +#include <__memory/allocator_traits.h> +#include <__memory/builtin_new_allocator.h> +#include <__memory/compressed_pair.h> +#include <__memory/unique_ptr.h> +#include <__type_traits/aligned_storage.h> +#include <__type_traits/decay.h> +#include <__type_traits/is_core_convertible.h> +#include <__type_traits/is_scalar.h> +#include <__type_traits/is_trivially_copy_constructible.h> +#include <__type_traits/is_trivially_destructible.h> +#include <__type_traits/is_void.h> +#include <__type_traits/strip_signature.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/piecewise_construct.h> +#include <__utility/swap.h> +#include <__verbose_abort> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#ifndef _LIBCPP_CXX03_LANG + +_LIBCPP_BEGIN_NAMESPACE_STD + +// bad_function_call + +_LIBCPP_DIAGNOSTIC_PUSH +_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wweak-vtables") +class _LIBCPP_EXPORTED_FROM_ABI bad_function_call + : public exception +{ +public: +// Note that when a key function is not used, every translation unit that uses +// bad_function_call will end up containing a weak definition of the vtable and +// typeinfo. +#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION + ~bad_function_call() _NOEXCEPT override; +#else + _LIBCPP_HIDE_FROM_ABI_VIRTUAL ~bad_function_call() _NOEXCEPT override {} +#endif + +#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_GOOD_WHAT_MESSAGE + const char* what() const _NOEXCEPT override; +#endif +}; +_LIBCPP_DIAGNOSTIC_POP + +_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY +void __throw_bad_function_call() +{ +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + throw bad_function_call(); +#else + _LIBCPP_VERBOSE_ABORT("bad_function_call was thrown in -fno-exceptions mode"); +#endif +} + +template class _LIBCPP_TEMPLATE_VIS function; // undefined + +namespace __function +{ + +template +struct __maybe_derive_from_unary_function +{ +}; + +template +struct __maybe_derive_from_unary_function<_Rp(_A1)> + : public __unary_function<_A1, _Rp> +{ +}; + +template +struct __maybe_derive_from_binary_function +{ +}; + +template +struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> + : public __binary_function<_A1, _A2, _Rp> +{ +}; + +template +_LIBCPP_INLINE_VISIBILITY +bool __not_null(_Fp const&) { return true; } + +template +_LIBCPP_INLINE_VISIBILITY +bool __not_null(_Fp* __ptr) { return __ptr; } + +template +_LIBCPP_INLINE_VISIBILITY +bool __not_null(_Ret _Class::*__ptr) { return __ptr; } + +template +_LIBCPP_INLINE_VISIBILITY +bool __not_null(function<_Fp> const& __f) { return !!__f; } + +#ifdef _LIBCPP_HAS_EXTENSION_BLOCKS +template +_LIBCPP_INLINE_VISIBILITY +bool __not_null(_Rp (^__p)(_Args...)) { return __p; } +#endif + +} // namespace __function + +namespace __function { + +// __alloc_func holds a functor and an allocator. + +template class __alloc_func; +template +class __default_alloc_func; + +template +class __alloc_func<_Fp, _Ap, _Rp(_ArgTypes...)> +{ + __compressed_pair<_Fp, _Ap> __f_; + + public: + typedef _LIBCPP_NODEBUG _Fp _Target; + typedef _LIBCPP_NODEBUG _Ap _Alloc; + + _LIBCPP_INLINE_VISIBILITY + const _Target& __target() const { return __f_.first(); } + + // WIN32 APIs may define __allocator, so use __get_allocator instead. + _LIBCPP_INLINE_VISIBILITY + const _Alloc& __get_allocator() const { return __f_.second(); } + + _LIBCPP_INLINE_VISIBILITY + explicit __alloc_func(_Target&& __f) + : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), + _VSTD::forward_as_tuple()) + { + } + + _LIBCPP_INLINE_VISIBILITY + explicit __alloc_func(const _Target& __f, const _Alloc& __a) + : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), + _VSTD::forward_as_tuple(__a)) + { + } + + _LIBCPP_INLINE_VISIBILITY + explicit __alloc_func(const _Target& __f, _Alloc&& __a) + : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), + _VSTD::forward_as_tuple(_VSTD::move(__a))) + { + } + + _LIBCPP_INLINE_VISIBILITY + explicit __alloc_func(_Target&& __f, _Alloc&& __a) + : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), + _VSTD::forward_as_tuple(_VSTD::move(__a))) + { + } + + _LIBCPP_INLINE_VISIBILITY + _Rp operator()(_ArgTypes&&... __arg) + { + typedef __invoke_void_return_wrapper<_Rp> _Invoker; + return _Invoker::__call(__f_.first(), + _VSTD::forward<_ArgTypes>(__arg)...); + } + + _LIBCPP_INLINE_VISIBILITY + __alloc_func* __clone() const + { + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __rebind_alloc<__alloc_traits, __alloc_func> _AA; + _AA __a(__f_.second()); + typedef __allocator_destructor<_AA> _Dp; + unique_ptr<__alloc_func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); + ::new ((void*)__hold.get()) __alloc_func(__f_.first(), _Alloc(__a)); + return __hold.release(); + } + + _LIBCPP_INLINE_VISIBILITY + void destroy() _NOEXCEPT { __f_.~__compressed_pair<_Target, _Alloc>(); } + + _LIBCPP_HIDE_FROM_ABI static void __destroy_and_delete(__alloc_func* __f) { + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __rebind_alloc<__alloc_traits, __alloc_func> _FunAlloc; + _FunAlloc __a(__f->__get_allocator()); + __f->destroy(); + __a.deallocate(__f, 1); + } +}; + +template +class __default_alloc_func<_Fp, _Rp(_ArgTypes...)> { + _Fp __f_; + +public: + typedef _LIBCPP_NODEBUG _Fp _Target; + + _LIBCPP_INLINE_VISIBILITY + const _Target& __target() const { return __f_; } + + _LIBCPP_INLINE_VISIBILITY + explicit __default_alloc_func(_Target&& __f) : __f_(_VSTD::move(__f)) {} + + _LIBCPP_INLINE_VISIBILITY + explicit __default_alloc_func(const _Target& __f) : __f_(__f) {} + + _LIBCPP_INLINE_VISIBILITY + _Rp operator()(_ArgTypes&&... __arg) { + typedef __invoke_void_return_wrapper<_Rp> _Invoker; + return _Invoker::__call(__f_, _VSTD::forward<_ArgTypes>(__arg)...); + } + + _LIBCPP_INLINE_VISIBILITY + __default_alloc_func* __clone() const { + __builtin_new_allocator::__holder_t __hold = + __builtin_new_allocator::__allocate_type<__default_alloc_func>(1); + __default_alloc_func* __res = + ::new ((void*)__hold.get()) __default_alloc_func(__f_); + (void)__hold.release(); + return __res; + } + + _LIBCPP_INLINE_VISIBILITY + void destroy() _NOEXCEPT { __f_.~_Target(); } + + _LIBCPP_HIDE_FROM_ABI static void __destroy_and_delete(__default_alloc_func* __f) { + __f->destroy(); + __builtin_new_allocator::__deallocate_type<__default_alloc_func>(__f, 1); + } +}; + +// __base provides an abstract interface for copyable functors. + +template class _LIBCPP_TEMPLATE_VIS __base; + +template +class __base<_Rp(_ArgTypes...)> +{ + __base(const __base&); + __base& operator=(const __base&); +public: + _LIBCPP_INLINE_VISIBILITY __base() {} + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual ~__base() {} + virtual __base* __clone() const = 0; + virtual void __clone(__base*) const = 0; + virtual void destroy() _NOEXCEPT = 0; + virtual void destroy_deallocate() _NOEXCEPT = 0; + virtual _Rp operator()(_ArgTypes&& ...) = 0; +#ifndef _LIBCPP_HAS_NO_RTTI + virtual const void* target(const type_info&) const _NOEXCEPT = 0; + virtual const std::type_info& target_type() const _NOEXCEPT = 0; +#endif // _LIBCPP_HAS_NO_RTTI +}; + +// __func implements __base for a given functor type. + +template class __func; + +template +class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> + : public __base<_Rp(_ArgTypes...)> +{ + __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> __f_; +public: + _LIBCPP_INLINE_VISIBILITY + explicit __func(_Fp&& __f) + : __f_(_VSTD::move(__f)) {} + + _LIBCPP_INLINE_VISIBILITY + explicit __func(const _Fp& __f, const _Alloc& __a) + : __f_(__f, __a) {} + + _LIBCPP_INLINE_VISIBILITY + explicit __func(const _Fp& __f, _Alloc&& __a) + : __f_(__f, _VSTD::move(__a)) {} + + _LIBCPP_INLINE_VISIBILITY + explicit __func(_Fp&& __f, _Alloc&& __a) + : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} + + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual __base<_Rp(_ArgTypes...)>* __clone() const; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual void destroy() _NOEXCEPT; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual void destroy_deallocate() _NOEXCEPT; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual _Rp operator()(_ArgTypes&&... __arg); +#ifndef _LIBCPP_HAS_NO_RTTI + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual const void* target(const type_info&) const _NOEXCEPT; + _LIBCPP_HIDE_FROM_ABI_VIRTUAL virtual const std::type_info& target_type() const _NOEXCEPT; +#endif // _LIBCPP_HAS_NO_RTTI +}; + +template +__base<_Rp(_ArgTypes...)>* +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const +{ + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __rebind_alloc<__alloc_traits, __func> _Ap; + _Ap __a(__f_.__get_allocator()); + typedef __allocator_destructor<_Ap> _Dp; + unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); + ::new ((void*)__hold.get()) __func(__f_.__target(), _Alloc(__a)); + return __hold.release(); +} + +template +void +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const +{ + ::new ((void*)__p) __func(__f_.__target(), __f_.__get_allocator()); +} + +template +void +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT +{ + __f_.destroy(); +} + +template +void +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT +{ + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __rebind_alloc<__alloc_traits, __func> _Ap; + _Ap __a(__f_.__get_allocator()); + __f_.destroy(); + __a.deallocate(this, 1); +} + +template +_Rp +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) +{ + return __f_(_VSTD::forward<_ArgTypes>(__arg)...); +} + +#ifndef _LIBCPP_HAS_NO_RTTI + +template +const void* +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT +{ + if (__ti == typeid(_Fp)) + return _VSTD::addressof(__f_.__target()); + return nullptr; +} + +template +const std::type_info& +__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT +{ + return typeid(_Fp); +} + +#endif // _LIBCPP_HAS_NO_RTTI + +// __value_func creates a value-type from a __func. + +template class __value_func; + +template class __value_func<_Rp(_ArgTypes...)> +{ + _LIBCPP_SUPPRESS_DEPRECATED_PUSH + typename aligned_storage<3 * sizeof(void*)>::type __buf_; + _LIBCPP_SUPPRESS_DEPRECATED_POP + + typedef __base<_Rp(_ArgTypes...)> __func; + __func* __f_; + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_NO_CFI static __func* __as_base(void* __p) + { + return reinterpret_cast<__func*>(__p); + } + + public: + _LIBCPP_INLINE_VISIBILITY + __value_func() _NOEXCEPT : __f_(nullptr) {} + + template + _LIBCPP_INLINE_VISIBILITY __value_func(_Fp&& __f, const _Alloc& __a) + : __f_(nullptr) + { + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; + typedef __rebind_alloc<__alloc_traits, _Fun> _FunAlloc; + + if (__function::__not_null(__f)) + { + _FunAlloc __af(__a); + if (sizeof(_Fun) <= sizeof(__buf_) && + is_nothrow_copy_constructible<_Fp>::value && + is_nothrow_copy_constructible<_FunAlloc>::value) + { + __f_ = + ::new ((void*)&__buf_) _Fun(_VSTD::move(__f), _Alloc(__af)); + } + else + { + typedef __allocator_destructor<_FunAlloc> _Dp; + unique_ptr<__func, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); + ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f), _Alloc(__a)); + __f_ = __hold.release(); + } + } + } + + template , __value_func>::value>::type> + _LIBCPP_INLINE_VISIBILITY explicit __value_func(_Fp&& __f) + : __value_func(_VSTD::forward<_Fp>(__f), allocator<_Fp>()) {} + + _LIBCPP_INLINE_VISIBILITY + __value_func(const __value_func& __f) + { + if (__f.__f_ == nullptr) + __f_ = nullptr; + else if ((void*)__f.__f_ == &__f.__buf_) + { + __f_ = __as_base(&__buf_); + __f.__f_->__clone(__f_); + } + else + __f_ = __f.__f_->__clone(); + } + + _LIBCPP_INLINE_VISIBILITY + __value_func(__value_func&& __f) _NOEXCEPT + { + if (__f.__f_ == nullptr) + __f_ = nullptr; + else if ((void*)__f.__f_ == &__f.__buf_) + { + __f_ = __as_base(&__buf_); + __f.__f_->__clone(__f_); + } + else + { + __f_ = __f.__f_; + __f.__f_ = nullptr; + } + } + + _LIBCPP_INLINE_VISIBILITY + ~__value_func() + { + if ((void*)__f_ == &__buf_) + __f_->destroy(); + else if (__f_) + __f_->destroy_deallocate(); + } + + _LIBCPP_INLINE_VISIBILITY + __value_func& operator=(__value_func&& __f) + { + *this = nullptr; + if (__f.__f_ == nullptr) + __f_ = nullptr; + else if ((void*)__f.__f_ == &__f.__buf_) + { + __f_ = __as_base(&__buf_); + __f.__f_->__clone(__f_); + } + else + { + __f_ = __f.__f_; + __f.__f_ = nullptr; + } + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __value_func& operator=(nullptr_t) + { + __func* __f = __f_; + __f_ = nullptr; + if ((void*)__f == &__buf_) + __f->destroy(); + else if (__f) + __f->destroy_deallocate(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + _Rp operator()(_ArgTypes&&... __args) const + { + if (__f_ == nullptr) + __throw_bad_function_call(); + return (*__f_)(_VSTD::forward<_ArgTypes>(__args)...); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(__value_func& __f) _NOEXCEPT + { + if (&__f == this) + return; + if ((void*)__f_ == &__buf_ && (void*)__f.__f_ == &__f.__buf_) + { + _LIBCPP_SUPPRESS_DEPRECATED_PUSH + typename aligned_storage::type __tempbuf; + _LIBCPP_SUPPRESS_DEPRECATED_POP + __func* __t = __as_base(&__tempbuf); + __f_->__clone(__t); + __f_->destroy(); + __f_ = nullptr; + __f.__f_->__clone(__as_base(&__buf_)); + __f.__f_->destroy(); + __f.__f_ = nullptr; + __f_ = __as_base(&__buf_); + __t->__clone(__as_base(&__f.__buf_)); + __t->destroy(); + __f.__f_ = __as_base(&__f.__buf_); + } + else if ((void*)__f_ == &__buf_) + { + __f_->__clone(__as_base(&__f.__buf_)); + __f_->destroy(); + __f_ = __f.__f_; + __f.__f_ = __as_base(&__f.__buf_); + } + else if ((void*)__f.__f_ == &__f.__buf_) + { + __f.__f_->__clone(__as_base(&__buf_)); + __f.__f_->destroy(); + __f.__f_ = __f_; + __f_ = __as_base(&__buf_); + } + else + _VSTD::swap(__f_, __f.__f_); + } + + _LIBCPP_INLINE_VISIBILITY + explicit operator bool() const _NOEXCEPT { return __f_ != nullptr; } + +#ifndef _LIBCPP_HAS_NO_RTTI + _LIBCPP_INLINE_VISIBILITY + const std::type_info& target_type() const _NOEXCEPT + { + if (__f_ == nullptr) + return typeid(void); + return __f_->target_type(); + } + + template + _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT + { + if (__f_ == nullptr) + return nullptr; + return (const _Tp*)__f_->target(typeid(_Tp)); + } +#endif // _LIBCPP_HAS_NO_RTTI +}; + +// Storage for a functor object, to be used with __policy to manage copy and +// destruction. +union __policy_storage +{ + mutable char __small[sizeof(void*) * 2]; + void* __large; +}; + +// True if _Fun can safely be held in __policy_storage.__small. +template +struct __use_small_storage + : public integral_constant< + bool, sizeof(_Fun) <= sizeof(__policy_storage) && + _LIBCPP_ALIGNOF(_Fun) <= _LIBCPP_ALIGNOF(__policy_storage) && + is_trivially_copy_constructible<_Fun>::value && + is_trivially_destructible<_Fun>::value> {}; + +// Policy contains information about how to copy, destroy, and move the +// underlying functor. You can think of it as a vtable of sorts. +struct __policy +{ + // Used to copy or destroy __large values. null for trivial objects. + void* (*const __clone)(const void*); + void (*const __destroy)(void*); + + // True if this is the null policy (no value). + const bool __is_null; + + // The target type. May be null if RTTI is disabled. + const std::type_info* const __type_info; + + // Returns a pointer to a static policy object suitable for the functor + // type. + template + _LIBCPP_INLINE_VISIBILITY static const __policy* __create() + { + return __choose_policy<_Fun>(__use_small_storage<_Fun>()); + } + + _LIBCPP_INLINE_VISIBILITY + static const __policy* __create_empty() + { + static const _LIBCPP_CONSTEXPR __policy __policy = {nullptr, nullptr, + true, +#ifndef _LIBCPP_HAS_NO_RTTI + &typeid(void) +#else + nullptr +#endif + }; + return &__policy; + } + + private: + template + _LIBCPP_HIDE_FROM_ABI static void* __large_clone(const void* __s) + { + const _Fun* __f = static_cast(__s); + return __f->__clone(); + } + + template + _LIBCPP_HIDE_FROM_ABI static void __large_destroy(void* __s) { + _Fun::__destroy_and_delete(static_cast<_Fun*>(__s)); + } + + template + _LIBCPP_INLINE_VISIBILITY static const __policy* + __choose_policy(/* is_small = */ false_type) { + static const _LIBCPP_CONSTEXPR __policy __policy = { + &__large_clone<_Fun>, &__large_destroy<_Fun>, false, +#ifndef _LIBCPP_HAS_NO_RTTI + &typeid(typename _Fun::_Target) +#else + nullptr +#endif + }; + return &__policy; + } + + template + _LIBCPP_INLINE_VISIBILITY static const __policy* + __choose_policy(/* is_small = */ true_type) + { + static const _LIBCPP_CONSTEXPR __policy __policy = { + nullptr, nullptr, false, +#ifndef _LIBCPP_HAS_NO_RTTI + &typeid(typename _Fun::_Target) +#else + nullptr +#endif + }; + return &__policy; + } +}; + +// Used to choose between perfect forwarding or pass-by-value. Pass-by-value is +// faster for types that can be passed in registers. +template +using __fast_forward = __conditional_t::value, _Tp, _Tp&&>; + +// __policy_invoker calls an instance of __alloc_func held in __policy_storage. + +template struct __policy_invoker; + +template +struct __policy_invoker<_Rp(_ArgTypes...)> +{ + typedef _Rp (*__Call)(const __policy_storage*, + __fast_forward<_ArgTypes>...); + + __Call __call_; + + // Creates an invoker that throws bad_function_call. + _LIBCPP_INLINE_VISIBILITY + __policy_invoker() : __call_(&__call_empty) {} + + // Creates an invoker that calls the given instance of __func. + template + _LIBCPP_INLINE_VISIBILITY static __policy_invoker __create() + { + return __policy_invoker(&__call_impl<_Fun>); + } + + private: + _LIBCPP_INLINE_VISIBILITY + explicit __policy_invoker(__Call __c) : __call_(__c) {} + + _LIBCPP_HIDE_FROM_ABI static _Rp __call_empty(const __policy_storage*, + __fast_forward<_ArgTypes>...) + { + __throw_bad_function_call(); + } + + template + _LIBCPP_HIDE_FROM_ABI static _Rp __call_impl(const __policy_storage* __buf, + __fast_forward<_ArgTypes>... __args) + { + _Fun* __f = reinterpret_cast<_Fun*>(__use_small_storage<_Fun>::value + ? &__buf->__small + : __buf->__large); + return (*__f)(_VSTD::forward<_ArgTypes>(__args)...); + } +}; + +// __policy_func uses a __policy and __policy_invoker to create a type-erased, +// copyable functor. + +template class __policy_func; + +template class __policy_func<_Rp(_ArgTypes...)> +{ + // Inline storage for small objects. + __policy_storage __buf_; + + // Calls the value stored in __buf_. This could technically be part of + // policy, but storing it here eliminates a level of indirection inside + // operator(). + typedef __function::__policy_invoker<_Rp(_ArgTypes...)> __invoker; + __invoker __invoker_; + + // The policy that describes how to move / copy / destroy __buf_. Never + // null, even if the function is empty. + const __policy* __policy_; + + public: + _LIBCPP_INLINE_VISIBILITY + __policy_func() : __policy_(__policy::__create_empty()) {} + + template + _LIBCPP_INLINE_VISIBILITY __policy_func(_Fp&& __f, const _Alloc& __a) + : __policy_(__policy::__create_empty()) + { + typedef __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; + typedef allocator_traits<_Alloc> __alloc_traits; + typedef __rebind_alloc<__alloc_traits, _Fun> _FunAlloc; + + if (__function::__not_null(__f)) + { + __invoker_ = __invoker::template __create<_Fun>(); + __policy_ = __policy::__create<_Fun>(); + + _FunAlloc __af(__a); + if (__use_small_storage<_Fun>()) + { + ::new ((void*)&__buf_.__small) + _Fun(_VSTD::move(__f), _Alloc(__af)); + } + else + { + typedef __allocator_destructor<_FunAlloc> _Dp; + unique_ptr<_Fun, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); + ::new ((void*)__hold.get()) + _Fun(_VSTD::move(__f), _Alloc(__af)); + __buf_.__large = __hold.release(); + } + } + } + + template , __policy_func>::value>::type> + _LIBCPP_INLINE_VISIBILITY explicit __policy_func(_Fp&& __f) + : __policy_(__policy::__create_empty()) { + typedef __default_alloc_func<_Fp, _Rp(_ArgTypes...)> _Fun; + + if (__function::__not_null(__f)) { + __invoker_ = __invoker::template __create<_Fun>(); + __policy_ = __policy::__create<_Fun>(); + if (__use_small_storage<_Fun>()) { + ::new ((void*)&__buf_.__small) _Fun(_VSTD::move(__f)); + } else { + __builtin_new_allocator::__holder_t __hold = + __builtin_new_allocator::__allocate_type<_Fun>(1); + __buf_.__large = ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f)); + (void)__hold.release(); + } + } + } + + _LIBCPP_INLINE_VISIBILITY + __policy_func(const __policy_func& __f) + : __buf_(__f.__buf_), __invoker_(__f.__invoker_), + __policy_(__f.__policy_) + { + if (__policy_->__clone) + __buf_.__large = __policy_->__clone(__f.__buf_.__large); + } + + _LIBCPP_INLINE_VISIBILITY + __policy_func(__policy_func&& __f) + : __buf_(__f.__buf_), __invoker_(__f.__invoker_), + __policy_(__f.__policy_) + { + if (__policy_->__destroy) + { + __f.__policy_ = __policy::__create_empty(); + __f.__invoker_ = __invoker(); + } + } + + _LIBCPP_INLINE_VISIBILITY + ~__policy_func() + { + if (__policy_->__destroy) + __policy_->__destroy(__buf_.__large); + } + + _LIBCPP_INLINE_VISIBILITY + __policy_func& operator=(__policy_func&& __f) + { + *this = nullptr; + __buf_ = __f.__buf_; + __invoker_ = __f.__invoker_; + __policy_ = __f.__policy_; + __f.__policy_ = __policy::__create_empty(); + __f.__invoker_ = __invoker(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __policy_func& operator=(nullptr_t) + { + const __policy* __p = __policy_; + __policy_ = __policy::__create_empty(); + __invoker_ = __invoker(); + if (__p->__destroy) + __p->__destroy(__buf_.__large); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + _Rp operator()(_ArgTypes&&... __args) const + { + return __invoker_.__call_(_VSTD::addressof(__buf_), + _VSTD::forward<_ArgTypes>(__args)...); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(__policy_func& __f) + { + _VSTD::swap(__invoker_, __f.__invoker_); + _VSTD::swap(__policy_, __f.__policy_); + _VSTD::swap(__buf_, __f.__buf_); + } + + _LIBCPP_INLINE_VISIBILITY + explicit operator bool() const _NOEXCEPT + { + return !__policy_->__is_null; + } + +#ifndef _LIBCPP_HAS_NO_RTTI + _LIBCPP_INLINE_VISIBILITY + const std::type_info& target_type() const _NOEXCEPT + { + return *__policy_->__type_info; + } + + template + _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT + { + if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info) + return nullptr; + if (__policy_->__clone) // Out of line storage. + return reinterpret_cast(__buf_.__large); + else + return reinterpret_cast(&__buf_.__small); + } +#endif // _LIBCPP_HAS_NO_RTTI +}; + +#if defined(_LIBCPP_HAS_BLOCKS_RUNTIME) + +extern "C" void *_Block_copy(const void *); +extern "C" void _Block_release(const void *); + +template +class __func<_Rp1(^)(_ArgTypes1...), _Alloc, _Rp(_ArgTypes...)> + : public __base<_Rp(_ArgTypes...)> +{ + typedef _Rp1(^__block_type)(_ArgTypes1...); + __block_type __f_; + +public: + _LIBCPP_INLINE_VISIBILITY + explicit __func(__block_type const& __f) +#ifdef _LIBCPP_HAS_OBJC_ARC + : __f_(__f) +#else + : __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr)) +#endif + { } + + // [TODO] add && to save on a retain + + _LIBCPP_INLINE_VISIBILITY + explicit __func(__block_type __f, const _Alloc& /* unused */) +#ifdef _LIBCPP_HAS_OBJC_ARC + : __f_(__f) +#else + : __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr)) +#endif + { } + + virtual __base<_Rp(_ArgTypes...)>* __clone() const { + _LIBCPP_ASSERT_INTERNAL(false, + "Block pointers are just pointers, so they should always fit into " + "std::function's small buffer optimization. This function should " + "never be invoked."); + return nullptr; + } + + virtual void __clone(__base<_Rp(_ArgTypes...)>* __p) const { + ::new ((void*)__p) __func(__f_); + } + + virtual void destroy() _NOEXCEPT { +#ifndef _LIBCPP_HAS_OBJC_ARC + if (__f_) + _Block_release(__f_); +#endif + __f_ = 0; + } + + virtual void destroy_deallocate() _NOEXCEPT { + _LIBCPP_ASSERT_INTERNAL(false, + "Block pointers are just pointers, so they should always fit into " + "std::function's small buffer optimization. This function should " + "never be invoked."); + } + + virtual _Rp operator()(_ArgTypes&& ... __arg) { + return _VSTD::__invoke(__f_, _VSTD::forward<_ArgTypes>(__arg)...); + } + +#ifndef _LIBCPP_HAS_NO_RTTI + virtual const void* target(type_info const& __ti) const _NOEXCEPT { + if (__ti == typeid(__func::__block_type)) + return &__f_; + return (const void*)nullptr; + } + + virtual const std::type_info& target_type() const _NOEXCEPT { + return typeid(__func::__block_type); + } +#endif // _LIBCPP_HAS_NO_RTTI +}; + +#endif // _LIBCPP_HAS_EXTENSION_BLOCKS + +} // namespace __function + +template +class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)> + : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, + public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> +{ +#ifndef _LIBCPP_ABI_OPTIMIZED_FUNCTION + typedef __function::__value_func<_Rp(_ArgTypes...)> __func; +#else + typedef __function::__policy_func<_Rp(_ArgTypes...)> __func; +#endif + + __func __f_; + + template , function>, + __invokable<_Fp, _ArgTypes...> + >::value> + struct __callable; + template + struct __callable<_Fp, true> + { + static const bool value = is_void<_Rp>::value || + __is_core_convertible::type, + _Rp>::value; + }; + template + struct __callable<_Fp, false> + { + static const bool value = false; + }; + + template + using _EnableIfLValueCallable = typename enable_if<__callable<_Fp&>::value>::type; +public: + typedef _Rp result_type; + + // construct/copy/destroy: + _LIBCPP_INLINE_VISIBILITY + function() _NOEXCEPT { } + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI function(nullptr_t) _NOEXCEPT {} + _LIBCPP_HIDE_FROM_ABI function(const function&); + _LIBCPP_HIDE_FROM_ABI function(function&&) _NOEXCEPT; + template> + _LIBCPP_HIDE_FROM_ABI function(_Fp); + +#if _LIBCPP_STD_VER <= 14 + template + _LIBCPP_INLINE_VISIBILITY + function(allocator_arg_t, const _Alloc&) _NOEXCEPT {} + template + _LIBCPP_INLINE_VISIBILITY + function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT {} + template + _LIBCPP_HIDE_FROM_ABI function(allocator_arg_t, const _Alloc&, const function&); + template + _LIBCPP_HIDE_FROM_ABI function(allocator_arg_t, const _Alloc&, function&&); + template> + _LIBCPP_HIDE_FROM_ABI function(allocator_arg_t, const _Alloc& __a, _Fp __f); +#endif + + _LIBCPP_HIDE_FROM_ABI function& operator=(const function&); + _LIBCPP_HIDE_FROM_ABI function& operator=(function&&) _NOEXCEPT; + _LIBCPP_HIDE_FROM_ABI function& operator=(nullptr_t) _NOEXCEPT; + template>> + _LIBCPP_HIDE_FROM_ABI function& operator=(_Fp&&); + + _LIBCPP_HIDE_FROM_ABI ~function(); + + // function modifiers: + _LIBCPP_HIDE_FROM_ABI void swap(function&) _NOEXCEPT; + +#if _LIBCPP_STD_VER <= 14 + template + _LIBCPP_INLINE_VISIBILITY + void assign(_Fp&& __f, const _Alloc& __a) + {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} +#endif + + // function capacity: + _LIBCPP_INLINE_VISIBILITY + explicit operator bool() const _NOEXCEPT { + return static_cast(__f_); + } + + // deleted overloads close possible hole in the type system + template + bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; +#if _LIBCPP_STD_VER <= 17 + template + bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; +#endif +public: + // function invocation: + _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes...) const; + +#ifndef _LIBCPP_HAS_NO_RTTI + // function target access: + _LIBCPP_HIDE_FROM_ABI const std::type_info& target_type() const _NOEXCEPT; + template + _LIBCPP_HIDE_FROM_ABI _Tp* target() _NOEXCEPT; + template + _LIBCPP_HIDE_FROM_ABI const _Tp* target() const _NOEXCEPT; +#endif // _LIBCPP_HAS_NO_RTTI +}; + +#if _LIBCPP_STD_VER >= 17 +template +function(_Rp(*)(_Ap...)) -> function<_Rp(_Ap...)>; + +template::type> +function(_Fp) -> function<_Stripped>; +#endif // _LIBCPP_STD_VER >= 17 + +template +function<_Rp(_ArgTypes...)>::function(const function& __f) : __f_(__f.__f_) {} + +#if _LIBCPP_STD_VER <= 14 +template +template +function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, + const function& __f) : __f_(__f.__f_) {} +#endif + +template +function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT + : __f_(_VSTD::move(__f.__f_)) {} + +#if _LIBCPP_STD_VER <= 14 +template +template +function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, + function&& __f) + : __f_(_VSTD::move(__f.__f_)) {} +#endif + +template +template +function<_Rp(_ArgTypes...)>::function(_Fp __f) : __f_(_VSTD::move(__f)) {} + +#if _LIBCPP_STD_VER <= 14 +template +template +function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a, + _Fp __f) + : __f_(_VSTD::move(__f), __a) {} +#endif + +template +function<_Rp(_ArgTypes...)>& +function<_Rp(_ArgTypes...)>::operator=(const function& __f) +{ + function(__f).swap(*this); + return *this; +} + +template +function<_Rp(_ArgTypes...)>& +function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT +{ + __f_ = _VSTD::move(__f.__f_); + return *this; +} + +template +function<_Rp(_ArgTypes...)>& +function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT +{ + __f_ = nullptr; + return *this; +} + +template +template +function<_Rp(_ArgTypes...)>& +function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) +{ + function(_VSTD::forward<_Fp>(__f)).swap(*this); + return *this; +} + +template +function<_Rp(_ArgTypes...)>::~function() {} + +template +void +function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT +{ + __f_.swap(__f.__f_); +} + +template +_Rp +function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const +{ + return __f_(_VSTD::forward<_ArgTypes>(__arg)...); +} + +#ifndef _LIBCPP_HAS_NO_RTTI + +template +const std::type_info& +function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT +{ + return __f_.target_type(); +} + +template +template +_Tp* +function<_Rp(_ArgTypes...)>::target() _NOEXCEPT +{ + return (_Tp*)(__f_.template target<_Tp>()); +} + +template +template +const _Tp* +function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT +{ + return __f_.template target<_Tp>(); +} + +#endif // _LIBCPP_HAS_NO_RTTI + +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} + +#if _LIBCPP_STD_VER <= 17 + +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} + +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} + +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} + +#endif // _LIBCPP_STD_VER <= 17 + +template +inline _LIBCPP_INLINE_VISIBILITY +void +swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT +{return __x.swap(__y);} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_CXX03_LANG + +#endif // _LIBCPP___FUNCTIONAL_FUNCTION_H diff --git a/lib/libcxx/include/__functional/hash.h b/lib/libcxx/include/__functional/hash.h new file mode 100644 index 0000000..fa09748 --- /dev/null +++ b/lib/libcxx/include/__functional/hash.h @@ -0,0 +1,687 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_HASH_H +#define _LIBCPP___FUNCTIONAL_HASH_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/unary_function.h> +#include <__fwd/hash.h> +#include <__tuple/sfinae_helpers.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_default_constructible.h> +#include <__type_traits/is_enum.h> +#include <__type_traits/is_move_constructible.h> +#include <__type_traits/underlying_type.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include <__utility/swap.h> +#include +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_HIDE_FROM_ABI +_Size +__loadword(const void* __p) +{ + _Size __r; + _VSTD::memcpy(&__r, __p, sizeof(__r)); + return __r; +} + +// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t +// is 64 bits. This is because cityhash64 uses 64bit x 64bit +// multiplication, which can be very slow on 32-bit systems. +template +struct __murmur2_or_cityhash; + +template +struct __murmur2_or_cityhash<_Size, 32> +{ + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + _Size operator()(const void* __key, _Size __len) const { + // murmur2 + const _Size __m = 0x5bd1e995; + const _Size __r = 24; + _Size __h = __len; + const unsigned char* __data = static_cast(__key); + for (; __len >= 4; __data += 4, __len -= 4) + { + _Size __k = std::__loadword<_Size>(__data); + __k *= __m; + __k ^= __k >> __r; + __k *= __m; + __h *= __m; + __h ^= __k; + } + switch (__len) + { + case 3: + __h ^= static_cast<_Size>(__data[2] << 16); + _LIBCPP_FALLTHROUGH(); + case 2: + __h ^= static_cast<_Size>(__data[1] << 8); + _LIBCPP_FALLTHROUGH(); + case 1: + __h ^= __data[0]; + __h *= __m; + } + __h ^= __h >> 13; + __h *= __m; + __h ^= __h >> 15; + return __h; + } +}; + +template +struct __murmur2_or_cityhash<_Size, 64> +{ + // cityhash64 + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + _Size operator()(const void* __key, _Size __len) const { + const char* __s = static_cast(__key); + if (__len <= 32) { + if (__len <= 16) { + return __hash_len_0_to_16(__s, __len); + } else { + return __hash_len_17_to_32(__s, __len); + } + } else if (__len <= 64) { + return __hash_len_33_to_64(__s, __len); + } + + // For strings over 64 bytes we hash the end first, and then as we + // loop we keep 56 bytes of state: v, w, x, y, and z. + _Size __x = std::__loadword<_Size>(__s + __len - 40); + _Size __y = std::__loadword<_Size>(__s + __len - 16) + + std::__loadword<_Size>(__s + __len - 56); + _Size __z = __hash_len_16(std::__loadword<_Size>(__s + __len - 48) + __len, + std::__loadword<_Size>(__s + __len - 24)); + pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); + pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); + __x = __x * __k1 + std::__loadword<_Size>(__s); + + // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. + __len = (__len - 1) & ~static_cast<_Size>(63); + do { + __x = __rotate(__x + __y + __v.first + std::__loadword<_Size>(__s + 8), 37) * __k1; + __y = __rotate(__y + __v.second + std::__loadword<_Size>(__s + 48), 42) * __k1; + __x ^= __w.second; + __y += __v.first + std::__loadword<_Size>(__s + 40); + __z = __rotate(__z + __w.first, 33) * __k1; + __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); + __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, + __y + std::__loadword<_Size>(__s + 16)); + _VSTD::swap(__z, __x); + __s += 64; + __len -= 64; + } while (__len != 0); + return __hash_len_16( + __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, + __hash_len_16(__v.second, __w.second) + __x); + } + + private: + // Some primes between 2^63 and 2^64. + static const _Size __k0 = 0xc3a5c85c97cb3127ULL; + static const _Size __k1 = 0xb492b66fbe98f273ULL; + static const _Size __k2 = 0x9ae16a3b2f90404fULL; + static const _Size __k3 = 0xc949d7c7509e6557ULL; + + _LIBCPP_HIDE_FROM_ABI + static _Size __rotate(_Size __val, int __shift) { + return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); + } + + _LIBCPP_HIDE_FROM_ABI + static _Size __rotate_by_at_least_1(_Size __val, int __shift) { + return (__val >> __shift) | (__val << (64 - __shift)); + } + + _LIBCPP_HIDE_FROM_ABI + static _Size __shift_mix(_Size __val) { + return __val ^ (__val >> 47); + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static _Size __hash_len_16(_Size __u, _Size __v) { + const _Size __mul = 0x9ddfea08eb382d69ULL; + _Size __a = (__u ^ __v) * __mul; + __a ^= (__a >> 47); + _Size __b = (__v ^ __a) * __mul; + __b ^= (__b >> 47); + __b *= __mul; + return __b; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static _Size __hash_len_0_to_16(const char* __s, _Size __len) { + if (__len > 8) { + const _Size __a = std::__loadword<_Size>(__s); + const _Size __b = std::__loadword<_Size>(__s + __len - 8); + return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; + } + if (__len >= 4) { + const uint32_t __a = std::__loadword(__s); + const uint32_t __b = std::__loadword(__s + __len - 4); +#ifdef _LIBCPP_ABI_FIX_CITYHASH_IMPLEMENTATION + return __hash_len_16(__len + (static_cast<_Size>(__a) << 3), __b); +#else + return __hash_len_16(__len + (__a << 3), __b); +#endif + } + if (__len > 0) { + const unsigned char __a = static_cast(__s[0]); + const unsigned char __b = static_cast(__s[__len >> 1]); + const unsigned char __c = static_cast(__s[__len - 1]); + const uint32_t __y = static_cast(__a) + + (static_cast(__b) << 8); + const uint32_t __z = __len + (static_cast(__c) << 2); + return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; + } + return __k2; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static _Size __hash_len_17_to_32(const char *__s, _Size __len) { + const _Size __a = std::__loadword<_Size>(__s) * __k1; + const _Size __b = std::__loadword<_Size>(__s + 8); + const _Size __c = std::__loadword<_Size>(__s + __len - 8) * __k2; + const _Size __d = std::__loadword<_Size>(__s + __len - 16) * __k0; + return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, + __a + __rotate(__b ^ __k3, 20) - __c + __len); + } + + // Return a 16-byte hash for 48 bytes. Quick and dirty. + // Callers do best to use "random-looking" values for a and b. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static pair<_Size, _Size> __weak_hash_len_32_with_seeds( + _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) + { + __a += __w; + __b = __rotate(__b + __a + __z, 21); + const _Size __c = __a; + __a += __x; + __a += __y; + __b += __rotate(__a, 44); + return pair<_Size, _Size>(__a + __z, __b + __c); + } + + // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static pair<_Size, _Size> __weak_hash_len_32_with_seeds( + const char* __s, _Size __a, _Size __b) + { + return __weak_hash_len_32_with_seeds(std::__loadword<_Size>(__s), + std::__loadword<_Size>(__s + 8), + std::__loadword<_Size>(__s + 16), + std::__loadword<_Size>(__s + 24), + __a, + __b); + } + + // Return an 8-byte hash for 33 to 64 bytes. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK + static _Size __hash_len_33_to_64(const char *__s, size_t __len) { + _Size __z = std::__loadword<_Size>(__s + 24); + _Size __a = std::__loadword<_Size>(__s) + + (__len + std::__loadword<_Size>(__s + __len - 16)) * __k0; + _Size __b = __rotate(__a + __z, 52); + _Size __c = __rotate(__a, 37); + __a += std::__loadword<_Size>(__s + 8); + __c += __rotate(__a, 7); + __a += std::__loadword<_Size>(__s + 16); + _Size __vf = __a + __z; + _Size __vs = __b + __rotate(__a, 31) + __c; + __a = std::__loadword<_Size>(__s + 16) + std::__loadword<_Size>(__s + __len - 32); + __z += std::__loadword<_Size>(__s + __len - 8); + __b = __rotate(__a + __z, 52); + __c = __rotate(__a, 37); + __a += std::__loadword<_Size>(__s + __len - 24); + __c += __rotate(__a, 7); + __a += std::__loadword<_Size>(__s + __len - 16); + _Size __wf = __a + __z; + _Size __ws = __b + __rotate(__a, 31) + __c; + _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); + return __shift_mix(__r * __k0 + __vs) * __k2; + } +}; + +template +struct __scalar_hash; + +template +struct __scalar_hash<_Tp, 0> + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + union + { + _Tp __t; + size_t __a; + } __u; + __u.__a = 0; + __u.__t = __v; + return __u.__a; + } +}; + +template +struct __scalar_hash<_Tp, 1> + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + union + { + _Tp __t; + size_t __a; + } __u; + __u.__t = __v; + return __u.__a; + } +}; + +template +struct __scalar_hash<_Tp, 2> + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + union + { + _Tp __t; + struct + { + size_t __a; + size_t __b; + } __s; + } __u; + __u.__t = __v; + return __murmur2_or_cityhash()(&__u, sizeof(__u)); + } +}; + +template +struct __scalar_hash<_Tp, 3> + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + union + { + _Tp __t; + struct + { + size_t __a; + size_t __b; + size_t __c; + } __s; + } __u; + __u.__t = __v; + return __murmur2_or_cityhash()(&__u, sizeof(__u)); + } +}; + +template +struct __scalar_hash<_Tp, 4> + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + union + { + _Tp __t; + struct + { + size_t __a; + size_t __b; + size_t __c; + size_t __d; + } __s; + } __u; + __u.__t = __v; + return __murmur2_or_cityhash()(&__u, sizeof(__u)); + } +}; + +struct _PairT { + size_t first; + size_t second; +}; + +_LIBCPP_HIDE_FROM_ABI +inline size_t __hash_combine(size_t __lhs, size_t __rhs) _NOEXCEPT { + typedef __scalar_hash<_PairT> _HashT; + const _PairT __p = {__lhs, __rhs}; + return _HashT()(__p); +} + +template +struct _LIBCPP_TEMPLATE_VIS hash<_Tp*> + : public __unary_function<_Tp*, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp* __v) const _NOEXCEPT + { + union + { + _Tp* __t; + size_t __a; + } __u; + __u.__t = __v; + return __murmur2_or_cityhash()(&__u, sizeof(__u)); + } +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(bool __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(char __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(signed char __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast(__v);} +}; + +#ifndef _LIBCPP_HAS_NO_CHAR8_T +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(char8_t __v) const _NOEXCEPT {return static_cast(__v);} +}; +#endif // !_LIBCPP_HAS_NO_CHAR8_T + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast(__v);} +}; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast(__v);} +}; +#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(short __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(int __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(long __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast(__v);} +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __scalar_hash +{ +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __scalar_hash +{ +}; + +#ifndef _LIBCPP_HAS_NO_INT128 + +template <> +struct _LIBCPP_TEMPLATE_VIS hash<__int128_t> + : public __scalar_hash<__int128_t> +{ +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash<__uint128_t> + : public __scalar_hash<__uint128_t> +{ +}; + +#endif + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __scalar_hash +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(float __v) const _NOEXCEPT + { + // -0.0 and 0.0 should return same hash + if (__v == 0.0f) + return 0; + return __scalar_hash::operator()(__v); + } +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __scalar_hash +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(double __v) const _NOEXCEPT + { + // -0.0 and 0.0 should return same hash + if (__v == 0.0) + return 0; + return __scalar_hash::operator()(__v); + } +}; + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __scalar_hash +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(long double __v) const _NOEXCEPT + { + // -0.0 and 0.0 should return same hash + if (__v == 0.0L) + return 0; +#if defined(__i386__) || (defined(__x86_64__) && defined(__ILP32__)) + // Zero out padding bits + union + { + long double __t; + struct + { + size_t __a; + size_t __b; + size_t __c; + size_t __d; + } __s; + } __u; + __u.__s.__a = 0; + __u.__s.__b = 0; + __u.__s.__c = 0; + __u.__s.__d = 0; + __u.__t = __v; + return __u.__s.__a ^ __u.__s.__b ^ __u.__s.__c ^ __u.__s.__d; +#elif defined(__x86_64__) + // Zero out padding bits + union + { + long double __t; + struct + { + size_t __a; + size_t __b; + } __s; + } __u; + __u.__s.__a = 0; + __u.__s.__b = 0; + __u.__t = __v; + return __u.__s.__a ^ __u.__s.__b; +#else + return __scalar_hash::operator()(__v); +#endif + } +}; + +template ::value> +struct _LIBCPP_TEMPLATE_VIS __enum_hash + : public __unary_function<_Tp, size_t> +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(_Tp __v) const _NOEXCEPT + { + typedef typename underlying_type<_Tp>::type type; + return hash()(static_cast(__v)); + } +}; +template +struct _LIBCPP_TEMPLATE_VIS __enum_hash<_Tp, false> { + __enum_hash() = delete; + __enum_hash(__enum_hash const&) = delete; + __enum_hash& operator=(__enum_hash const&) = delete; +}; + +template +struct _LIBCPP_TEMPLATE_VIS hash : public __enum_hash<_Tp> +{ +}; + +#if _LIBCPP_STD_VER >= 17 + +template <> +struct _LIBCPP_TEMPLATE_VIS hash + : public __unary_function +{ + _LIBCPP_HIDE_FROM_ABI + size_t operator()(nullptr_t) const _NOEXCEPT { + return 662607004ull; + } +}; +#endif + +#ifndef _LIBCPP_CXX03_LANG +template +using __check_hash_requirements _LIBCPP_NODEBUG = integral_constant::value && + is_move_constructible<_Hash>::value && + __invokable_r::value +>; + +template > +using __has_enabled_hash _LIBCPP_NODEBUG = integral_constant::value && + is_default_constructible<_Hash>::value +>; + +#if _LIBCPP_STD_VER >= 17 +template +using __enable_hash_helper_imp _LIBCPP_NODEBUG = _Type; + +template +using __enable_hash_helper _LIBCPP_NODEBUG = __enable_hash_helper_imp<_Type, + typename enable_if<__all<__has_enabled_hash<_Keys>::value...>::value>::type +>; +#else +template +using __enable_hash_helper _LIBCPP_NODEBUG = _Type; +#endif + +#endif // !_LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_HASH_H diff --git a/lib/libcxx/include/__functional/identity.h b/lib/libcxx/include/__functional/identity.h new file mode 100644 index 0000000..5dffedf --- /dev/null +++ b/lib/libcxx/include/__functional/identity.h @@ -0,0 +1,57 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_IDENTITY_H +#define _LIBCPP___FUNCTIONAL_IDENTITY_H + +#include <__config> +#include <__type_traits/integral_constant.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __is_identity : false_type {}; + +struct __identity { + template + _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp&& operator()(_Tp&& __t) const _NOEXCEPT { + return std::forward<_Tp>(__t); + } + + using is_transparent = void; +}; + +template <> +struct __is_identity<__identity> : true_type {}; + +#if _LIBCPP_STD_VER >= 20 + +struct identity { + template + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Tp&& operator()(_Tp&& __t) const noexcept + { + return _VSTD::forward<_Tp>(__t); + } + + using is_transparent = void; +}; + +template <> +struct __is_identity : true_type {}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_IDENTITY_H diff --git a/lib/libcxx/include/__functional/invoke.h b/lib/libcxx/include/__functional/invoke.h new file mode 100644 index 0000000..a7dd311 --- /dev/null +++ b/lib/libcxx/include/__functional/invoke.h @@ -0,0 +1,56 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_INVOKE_H +#define _LIBCPP___FUNCTIONAL_INVOKE_H + +#include <__config> +#include <__type_traits/invoke.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 invoke_result_t<_Fn, _Args...> +invoke(_Fn&& __f, _Args&&... __args) + noexcept(is_nothrow_invocable_v<_Fn, _Args...>) +{ + return _VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); +} + +#endif // _LIBCPP_STD_VER >= 17 + +#if _LIBCPP_STD_VER >= 23 +template + requires is_invocable_r_v<_Result, _Fn, _Args...> +_LIBCPP_HIDE_FROM_ABI constexpr _Result +invoke_r(_Fn&& __f, _Args&&... __args) noexcept(is_nothrow_invocable_r_v<_Result, _Fn, _Args...>) { + if constexpr (is_void_v<_Result>) { + static_cast(std::invoke(std::forward<_Fn>(__f), std::forward<_Args>(__args)...)); + } else { + // TODO: Use reference_converts_from_temporary_v once implemented + // using _ImplicitInvokeResult = invoke_result_t<_Fn, _Args...>; + // static_assert(!reference_converts_from_temporary_v<_Result, _ImplicitInvokeResult>, + static_assert(true, + "Returning from invoke_r would bind a temporary object to the reference return type, " + "which would result in a dangling reference."); + return std::invoke(std::forward<_Fn>(__f), std::forward<_Args>(__args)...); + } +} +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_INVOKE_H diff --git a/lib/libcxx/include/__functional/is_transparent.h b/lib/libcxx/include/__functional/is_transparent.h new file mode 100644 index 0000000..c539a07 --- /dev/null +++ b/lib/libcxx/include/__functional/is_transparent.h @@ -0,0 +1,36 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_IS_TRANSPARENT +#define _LIBCPP___FUNCTIONAL_IS_TRANSPARENT + +#include <__config> +#include <__type_traits/integral_constant.h> +#include <__type_traits/void_t.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 14 + +template +struct __is_transparent : false_type {}; + +template +struct __is_transparent<_Tp, _Up, __void_t > + : true_type {}; + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_IS_TRANSPARENT diff --git a/lib/libcxx/include/__functional/mem_fn.h b/lib/libcxx/include/__functional/mem_fn.h new file mode 100644 index 0000000..fe221dd --- /dev/null +++ b/lib/libcxx/include/__functional/mem_fn.h @@ -0,0 +1,58 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_MEM_FN_H +#define _LIBCPP___FUNCTIONAL_MEM_FN_H + +#include <__config> +#include <__functional/binary_function.h> +#include <__functional/invoke.h> +#include <__functional/weak_result_type.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class __mem_fn : public __weak_result_type<_Tp> +{ +public: + // types + typedef _Tp type; +private: + type __f_; + +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + __mem_fn(type __f) _NOEXCEPT : __f_(__f) {} + + // invoke + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + + typename __invoke_return::type + operator() (_ArgTypes&&... __args) const { + return std::__invoke(__f_, std::forward<_ArgTypes>(__args)...); + } +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +__mem_fn<_Rp _Tp::*> +mem_fn(_Rp _Tp::* __pm) _NOEXCEPT +{ + return __mem_fn<_Rp _Tp::*>(__pm); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_MEM_FN_H diff --git a/lib/libcxx/include/__functional/mem_fun_ref.h b/lib/libcxx/include/__functional/mem_fun_ref.h new file mode 100644 index 0000000..65aab06 --- /dev/null +++ b/lib/libcxx/include/__functional/mem_fun_ref.h @@ -0,0 +1,173 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_MEM_FUN_REF_H +#define _LIBCPP___FUNCTIONAL_MEM_FUN_REF_H + +#include <__config> +#include <__functional/binary_function.h> +#include <__functional/unary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_t + : public __unary_function<_Tp*, _Sp> +{ + _Sp (_Tp::*__p_)(); +public: + _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const + {return (__p->*__p_)();} +}; + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_t + : public __binary_function<_Tp*, _Ap, _Sp> +{ + _Sp (_Tp::*__p_)(_Ap); +public: + _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const + {return (__p->*__p_)(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +mem_fun_t<_Sp,_Tp> +mem_fun(_Sp (_Tp::*__f)()) + {return mem_fun_t<_Sp,_Tp>(__f);} + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +mem_fun1_t<_Sp,_Tp,_Ap> +mem_fun(_Sp (_Tp::*__f)(_Ap)) + {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_ref_t + : public __unary_function<_Tp, _Sp> +{ + _Sp (_Tp::*__p_)(); +public: + _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const + {return (__p.*__p_)();} +}; + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_ref_t + : public __binary_function<_Tp, _Ap, _Sp> +{ + _Sp (_Tp::*__p_)(_Ap); +public: + _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const + {return (__p.*__p_)(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +mem_fun_ref_t<_Sp,_Tp> +mem_fun_ref(_Sp (_Tp::*__f)()) + {return mem_fun_ref_t<_Sp,_Tp>(__f);} + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +mem_fun1_ref_t<_Sp,_Tp,_Ap> +mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) + {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_t + : public __unary_function +{ + _Sp (_Tp::*__p_)() const; +public: + _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const + {return (__p->*__p_)();} +}; + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_t + : public __binary_function +{ + _Sp (_Tp::*__p_)(_Ap) const; +public: + _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const + {return (__p->*__p_)(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +const_mem_fun_t<_Sp,_Tp> +mem_fun(_Sp (_Tp::*__f)() const) + {return const_mem_fun_t<_Sp,_Tp>(__f);} + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +const_mem_fun1_t<_Sp,_Tp,_Ap> +mem_fun(_Sp (_Tp::*__f)(_Ap) const) + {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_ref_t + : public __unary_function<_Tp, _Sp> +{ + _Sp (_Tp::*__p_)() const; +public: + _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const + {return (__p.*__p_)();} +}; + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_ref_t + : public __binary_function<_Tp, _Ap, _Sp> +{ + _Sp (_Tp::*__p_)(_Ap) const; +public: + _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) + : __p_(__p) {} + _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const + {return (__p.*__p_)(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +const_mem_fun_ref_t<_Sp,_Tp> +mem_fun_ref(_Sp (_Tp::*__f)() const) + {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +const_mem_fun1_ref_t<_Sp,_Tp,_Ap> +mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) + {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} + +#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_MEM_FUN_REF_H diff --git a/lib/libcxx/include/__functional/not_fn.h b/lib/libcxx/include/__functional/not_fn.h new file mode 100644 index 0000000..0cdb1b7 --- /dev/null +++ b/lib/libcxx/include/__functional/not_fn.h @@ -0,0 +1,57 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_NOT_FN_H +#define _LIBCPP___FUNCTIONAL_NOT_FN_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/perfect_forward.h> +#include <__type_traits/decay.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_move_constructible.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +struct __not_fn_op { + template + _LIBCPP_HIDE_FROM_ABI + _LIBCPP_CONSTEXPR_SINCE_CXX20 auto operator()(_Args&&... __args) const + noexcept(noexcept(!_VSTD::invoke(_VSTD::forward<_Args>(__args)...))) + -> decltype( !_VSTD::invoke(_VSTD::forward<_Args>(__args)...)) + { return !_VSTD::invoke(_VSTD::forward<_Args>(__args)...); } +}; + +template +struct __not_fn_t : __perfect_forward<__not_fn_op, _Fn> { + using __perfect_forward<__not_fn_op, _Fn>::__perfect_forward; +}; + +template , _Fn> && + is_move_constructible_v> +>> +_LIBCPP_HIDE_FROM_ABI +_LIBCPP_CONSTEXPR_SINCE_CXX20 auto not_fn(_Fn&& __f) { + return __not_fn_t>(_VSTD::forward<_Fn>(__f)); +} + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_NOT_FN_H diff --git a/lib/libcxx/include/__functional/operations.h b/lib/libcxx/include/__functional/operations.h new file mode 100644 index 0000000..6cdb89d --- /dev/null +++ b/lib/libcxx/include/__functional/operations.h @@ -0,0 +1,599 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_OPERATIONS_H +#define _LIBCPP___FUNCTIONAL_OPERATIONS_H + +#include <__config> +#include <__functional/binary_function.h> +#include <__functional/unary_function.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/operation_traits.h> +#include <__type_traits/predicate_traits.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Arithmetic operations + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS plus + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x + __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(plus); + +template +struct __is_trivial_plus_operation, _Tp, _Tp> : true_type {}; + +#if _LIBCPP_STD_VER >= 14 +template +struct __is_trivial_plus_operation, _Tp, _Up> : true_type {}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS plus +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS minus + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x - __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(minus); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS minus +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS multiplies + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x * __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(multiplies); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS multiplies +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS divides + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x / __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(divides); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS divides +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS modulus + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x % __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(modulus); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS modulus +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS negate + : __unary_function<_Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x) const + {return -__x;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(negate); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS negate +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_Tp&& __x) const + noexcept(noexcept(- _VSTD::forward<_Tp>(__x))) + -> decltype( - _VSTD::forward<_Tp>(__x)) + { return - _VSTD::forward<_Tp>(__x); } + typedef void is_transparent; +}; +#endif + +// Bitwise operations + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS bit_and + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x & __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_and); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS bit_and +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +struct _LIBCPP_TEMPLATE_VIS bit_not + : __unary_function<_Tp, _Tp> +{ + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x) const + {return ~__x;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_not); + +template <> +struct _LIBCPP_TEMPLATE_VIS bit_not +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_Tp&& __x) const + noexcept(noexcept(~_VSTD::forward<_Tp>(__x))) + -> decltype( ~_VSTD::forward<_Tp>(__x)) + { return ~_VSTD::forward<_Tp>(__x); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS bit_or + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x | __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_or); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS bit_or +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS bit_xor + : __binary_function<_Tp, _Tp, _Tp> +{ + typedef _Tp __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + _Tp operator()(const _Tp& __x, const _Tp& __y) const + {return __x ^ __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_xor); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS bit_xor +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +// Comparison operations + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS equal_to + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x == __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(equal_to); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS equal_to +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +template +struct __is_trivial_equality_predicate, _Tp, _Tp> : true_type {}; + +#if _LIBCPP_STD_VER >= 14 +template +struct __is_trivial_equality_predicate, _Tp, _Tp> : true_type {}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS not_equal_to + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x != __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(not_equal_to); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS not_equal_to +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS less + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x < __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(less); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS less +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS less_equal + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x <= __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(less_equal); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS less_equal +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS greater_equal + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x >= __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(greater_equal); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS greater_equal +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS greater + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x > __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(greater); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS greater +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +// Logical operations + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS logical_and + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x && __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_and); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS logical_and +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS logical_not + : __unary_function<_Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x) const + {return !__x;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_not); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS logical_not +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_Tp&& __x) const + noexcept(noexcept(!_VSTD::forward<_Tp>(__x))) + -> decltype( !_VSTD::forward<_Tp>(__x)) + { return !_VSTD::forward<_Tp>(__x); } + typedef void is_transparent; +}; +#endif + +#if _LIBCPP_STD_VER >= 14 +template +#else +template +#endif +struct _LIBCPP_TEMPLATE_VIS logical_or + : __binary_function<_Tp, _Tp, bool> +{ + typedef bool __result_type; // used by valarray + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const _Tp& __x, const _Tp& __y) const + {return __x || __y;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_or); + +#if _LIBCPP_STD_VER >= 14 +template <> +struct _LIBCPP_TEMPLATE_VIS logical_or +{ + template + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + auto operator()(_T1&& __t, _T2&& __u) const + noexcept(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) + -> decltype( _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) + { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } + typedef void is_transparent; +}; +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_OPERATIONS_H diff --git a/lib/libcxx/include/__functional/perfect_forward.h b/lib/libcxx/include/__functional/perfect_forward.h new file mode 100644 index 0000000..b848fbf --- /dev/null +++ b/lib/libcxx/include/__functional/perfect_forward.h @@ -0,0 +1,102 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H +#define _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H + +#include <__config> +#include <__type_traits/enable_if.h> +#include <__type_traits/invoke.h> +#include <__type_traits/is_constructible.h> +#include <__utility/declval.h> +#include <__utility/forward.h> +#include <__utility/integer_sequence.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +template +struct __perfect_forward_impl; + +template +struct __perfect_forward_impl<_Op, index_sequence<_Idx...>, _BoundArgs...> { +private: + tuple<_BoundArgs...> __bound_args_; + +public: + template , _Args&&...> + >> + _LIBCPP_HIDE_FROM_ABI explicit constexpr __perfect_forward_impl(_Args&&... __bound_args) + : __bound_args_(_VSTD::forward<_Args>(__bound_args)...) {} + + _LIBCPP_HIDE_FROM_ABI __perfect_forward_impl(__perfect_forward_impl const&) = default; + _LIBCPP_HIDE_FROM_ABI __perfect_forward_impl(__perfect_forward_impl&&) = default; + + _LIBCPP_HIDE_FROM_ABI __perfect_forward_impl& operator=(__perfect_forward_impl const&) = default; + _LIBCPP_HIDE_FROM_ABI __perfect_forward_impl& operator=(__perfect_forward_impl&&) = default; + + template >> + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) & + noexcept(noexcept(_Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...))) + -> decltype( _Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...)) + { return _Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...); } + + template >> + auto operator()(_Args&&...) & = delete; + + template >> + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) const& + noexcept(noexcept(_Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...))) + -> decltype( _Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...)) + { return _Op()(_VSTD::get<_Idx>(__bound_args_)..., _VSTD::forward<_Args>(__args)...); } + + template >> + auto operator()(_Args&&...) const& = delete; + + template >> + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) && + noexcept(noexcept(_Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...))) + -> decltype( _Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...)) + { return _Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...); } + + template >> + auto operator()(_Args&&...) && = delete; + + template >> + _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) const&& + noexcept(noexcept(_Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...))) + -> decltype( _Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...)) + { return _Op()(_VSTD::get<_Idx>(_VSTD::move(__bound_args_))..., _VSTD::forward<_Args>(__args)...); } + + template >> + auto operator()(_Args&&...) const&& = delete; +}; + +// __perfect_forward implements a perfect-forwarding call wrapper as explained in [func.require]. +template +using __perfect_forward = __perfect_forward_impl<_Op, index_sequence_for<_Args...>, _Args...>; + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H diff --git a/lib/libcxx/include/__functional/pointer_to_binary_function.h b/lib/libcxx/include/__functional/pointer_to_binary_function.h new file mode 100644 index 0000000..b2676c5 --- /dev/null +++ b/lib/libcxx/include/__functional/pointer_to_binary_function.h @@ -0,0 +1,46 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_POINTER_TO_BINARY_FUNCTION_H +#define _LIBCPP___FUNCTIONAL_POINTER_TO_BINARY_FUNCTION_H + +#include <__config> +#include <__functional/binary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_binary_function + : public __binary_function<_Arg1, _Arg2, _Result> +{ + _Result (*__f_)(_Arg1, _Arg2); +public: + _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) + : __f_(__f) {} + _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const + {return __f_(__x, __y);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +pointer_to_binary_function<_Arg1,_Arg2,_Result> +ptr_fun(_Result (*__f)(_Arg1,_Arg2)) + {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_POINTER_TO_BINARY_FUNCTION_H diff --git a/lib/libcxx/include/__functional/pointer_to_unary_function.h b/lib/libcxx/include/__functional/pointer_to_unary_function.h new file mode 100644 index 0000000..77d07ad --- /dev/null +++ b/lib/libcxx/include/__functional/pointer_to_unary_function.h @@ -0,0 +1,46 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H +#define _LIBCPP___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H + +#include <__config> +#include <__functional/unary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_unary_function + : public __unary_function<_Arg, _Result> +{ + _Result (*__f_)(_Arg); +public: + _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) + : __f_(__f) {} + _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const + {return __f_(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY +pointer_to_unary_function<_Arg,_Result> +ptr_fun(_Result (*__f)(_Arg)) + {return pointer_to_unary_function<_Arg,_Result>(__f);} + +#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H diff --git a/lib/libcxx/include/__functional/ranges_operations.h b/lib/libcxx/include/__functional/ranges_operations.h new file mode 100644 index 0000000..c344fc3 --- /dev/null +++ b/lib/libcxx/include/__functional/ranges_operations.h @@ -0,0 +1,105 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H +#define _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H + +#include <__concepts/equality_comparable.h> +#include <__concepts/totally_ordered.h> +#include <__config> +#include <__type_traits/integral_constant.h> +#include <__type_traits/predicate_traits.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +struct equal_to { + template + requires equality_comparable_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u)))) { + return _VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u); + } + + using is_transparent = void; +}; + +struct not_equal_to { + template + requires equality_comparable_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(!(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u))))) { + return !(_VSTD::forward<_Tp>(__t) == _VSTD::forward<_Up>(__u)); + } + + using is_transparent = void; +}; + +struct less { + template + requires totally_ordered_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(_VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u)))) { + return _VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u); + } + + using is_transparent = void; +}; + +struct less_equal { + template + requires totally_ordered_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(!(_VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t))))) { + return !(_VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t)); + } + + using is_transparent = void; +}; + +struct greater { + template + requires totally_ordered_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(_VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t)))) { + return _VSTD::forward<_Up>(__u) < _VSTD::forward<_Tp>(__t); + } + + using is_transparent = void; +}; + +struct greater_equal { + template + requires totally_ordered_with<_Tp, _Up> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp &&__t, _Up &&__u) const + noexcept(noexcept(bool(!(_VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u))))) { + return !(_VSTD::forward<_Tp>(__t) < _VSTD::forward<_Up>(__u)); + } + + using is_transparent = void; +}; + +} // namespace ranges + +template +struct __is_trivial_equality_predicate : true_type {}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H diff --git a/lib/libcxx/include/__functional/reference_wrapper.h b/lib/libcxx/include/__functional/reference_wrapper.h new file mode 100644 index 0000000..2d382a3 --- /dev/null +++ b/lib/libcxx/include/__functional/reference_wrapper.h @@ -0,0 +1,111 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_REFERENCE_WRAPPER_H +#define _LIBCPP___FUNCTIONAL_REFERENCE_WRAPPER_H + +#include <__config> +#include <__functional/invoke.h> +#include <__functional/weak_result_type.h> +#include <__memory/addressof.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/declval.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class _LIBCPP_TEMPLATE_VIS reference_wrapper : public __weak_result_type<_Tp> +{ +public: + // types + typedef _Tp type; +private: + type* __f_; + + static void __fun(_Tp&) _NOEXCEPT; + static void __fun(_Tp&&) = delete; + +public: + template ::value, decltype(__fun(std::declval<_Up>())) > > + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + reference_wrapper(_Up&& __u) _NOEXCEPT_(noexcept(__fun(std::declval<_Up>()))) { + type& __f = static_cast<_Up&&>(__u); + __f_ = _VSTD::addressof(__f); + } + + // access + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + operator type&() const _NOEXCEPT {return *__f_;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + type& get() const _NOEXCEPT {return *__f_;} + + // invoke + template + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 + typename __invoke_of::type + operator() (_ArgTypes&&... __args) const +#if _LIBCPP_STD_VER >= 17 + // Since is_nothrow_invocable requires C++17 LWG3764 is not backported + // to earlier versions. + noexcept(is_nothrow_invocable_v<_Tp&, _ArgTypes...>) +#endif + { + return std::__invoke(get(), std::forward<_ArgTypes>(__args)...); + } +}; + +#if _LIBCPP_STD_VER >= 17 +template +reference_wrapper(_Tp&) -> reference_wrapper<_Tp>; +#endif + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +reference_wrapper<_Tp> +ref(_Tp& __t) _NOEXCEPT +{ + return reference_wrapper<_Tp>(__t); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +reference_wrapper<_Tp> +ref(reference_wrapper<_Tp> __t) _NOEXCEPT +{ + return __t; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +reference_wrapper +cref(const _Tp& __t) _NOEXCEPT +{ + return reference_wrapper(__t); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +reference_wrapper +cref(reference_wrapper<_Tp> __t) _NOEXCEPT +{ + return __t; +} + +template void ref(const _Tp&&) = delete; +template void cref(const _Tp&&) = delete; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_REFERENCE_WRAPPER_H diff --git a/lib/libcxx/include/__functional/unary_function.h b/lib/libcxx/include/__functional/unary_function.h new file mode 100644 index 0000000..f07cac1 --- /dev/null +++ b/lib/libcxx/include/__functional/unary_function.h @@ -0,0 +1,51 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H +#define _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) + +template +struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 unary_function +{ + typedef _Arg argument_type; + typedef _Result result_type; +}; + +#endif // _LIBCPP_STD_VER <= 14 + +template struct __unary_function_keep_layout_base { +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using argument_type _LIBCPP_DEPRECATED_IN_CXX17 = _Arg; + using result_type _LIBCPP_DEPRECATED_IN_CXX17 = _Result; +#endif +}; + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) +_LIBCPP_DIAGNOSTIC_PUSH +_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") +template +using __unary_function = unary_function<_Arg, _Result>; +_LIBCPP_DIAGNOSTIC_POP +#else +template +using __unary_function = __unary_function_keep_layout_base<_Arg, _Result>; +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H diff --git a/lib/libcxx/include/__functional/unary_negate.h b/lib/libcxx/include/__functional/unary_negate.h new file mode 100644 index 0000000..ab87e86 --- /dev/null +++ b/lib/libcxx/include/__functional/unary_negate.h @@ -0,0 +1,47 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H +#define _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H + +#include <__config> +#include <__functional/unary_function.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) + +template +class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 unary_negate + : public __unary_function +{ + _Predicate __pred_; +public: + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + explicit unary_negate(const _Predicate& __pred) + : __pred_(__pred) {} + _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY + bool operator()(const typename _Predicate::argument_type& __x) const + {return !__pred_(__x);} +}; + +template +_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY +unary_negate<_Predicate> +not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} + +#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H diff --git a/lib/libcxx/include/__functional/weak_result_type.h b/lib/libcxx/include/__functional/weak_result_type.h new file mode 100644 index 0000000..18d1bf7 --- /dev/null +++ b/lib/libcxx/include/__functional/weak_result_type.h @@ -0,0 +1,294 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FUNCTIONAL_WEAK_RESULT_TYPE_H +#define _LIBCPP___FUNCTIONAL_WEAK_RESULT_TYPE_H + +#include <__config> +#include <__functional/binary_function.h> +#include <__functional/invoke.h> +#include <__functional/unary_function.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_same.h> +#include <__utility/declval.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __has_result_type +{ +private: + template static false_type __test(...); + template static true_type __test(typename _Up::result_type* = 0); +public: + static const bool value = decltype(__test<_Tp>(0))::value; +}; + +// __weak_result_type + +template +struct __derives_from_unary_function +{ +private: + struct __two {char __lx; char __lxx;}; + static __two __test(...); + template + static __unary_function<_Ap, _Rp> + __test(const volatile __unary_function<_Ap, _Rp>*); + +public: + static const bool value = !is_same::value; + typedef decltype(__test((_Tp*)0)) type; +}; + +template +struct __derives_from_binary_function +{ +private: + struct __two {char __lx; char __lxx;}; + static __two __test(...); + template + static __binary_function<_A1, _A2, _Rp> + __test(const volatile __binary_function<_A1, _A2, _Rp>*); + +public: + static const bool value = !is_same::value; + typedef decltype(__test((_Tp*)0)) type; +}; + +template ::value> +struct __maybe_derive_from_unary_function // bool is true + : public __derives_from_unary_function<_Tp>::type +{ +}; + +template +struct __maybe_derive_from_unary_function<_Tp, false> +{ +}; + +template ::value> +struct __maybe_derive_from_binary_function // bool is true + : public __derives_from_binary_function<_Tp>::type +{ +}; + +template +struct __maybe_derive_from_binary_function<_Tp, false> +{ +}; + +template ::value> +struct __weak_result_type_imp // bool is true + : public __maybe_derive_from_unary_function<_Tp>, + public __maybe_derive_from_binary_function<_Tp> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = typename _Tp::result_type; +#endif +}; + +template +struct __weak_result_type_imp<_Tp, false> + : public __maybe_derive_from_unary_function<_Tp>, + public __maybe_derive_from_binary_function<_Tp> +{ +}; + +template +struct __weak_result_type + : public __weak_result_type_imp<_Tp> +{ +}; + +// 0 argument case + +template +struct __weak_result_type<_Rp ()> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (&)()> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (*)()> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +// 1 argument case + +template +struct __weak_result_type<_Rp (_A1)> + : public __unary_function<_A1, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (&)(_A1)> + : public __unary_function<_A1, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (*)(_A1)> + : public __unary_function<_A1, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)()> + : public __unary_function<_Cp*, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)() const> + : public __unary_function +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)() volatile> + : public __unary_function +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)() const volatile> + : public __unary_function +{ +}; + +// 2 argument case + +template +struct __weak_result_type<_Rp (_A1, _A2)> + : public __binary_function<_A1, _A2, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (*)(_A1, _A2)> + : public __binary_function<_A1, _A2, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (&)(_A1, _A2)> + : public __binary_function<_A1, _A2, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1)> + : public __binary_function<_Cp*, _A1, _Rp> +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1) const> + : public __binary_function +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile> + : public __binary_function +{ +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile> + : public __binary_function +{ +}; + +// 3 or more arguments + +template +struct __weak_result_type<_Rp (_A1, _A2, _A3, _A4...)> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (&)(_A1, _A2, _A3, _A4...)> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (*)(_A1, _A2, _A3, _A4...)> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...)> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) const> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) volatile> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) const volatile> +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + using result_type _LIBCPP_NODEBUG _LIBCPP_DEPRECATED_IN_CXX17 = _Rp; +#endif +}; + +template +struct __invoke_return +{ + typedef decltype(_VSTD::__invoke(std::declval<_Tp>(), std::declval<_Args>()...)) type; +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FUNCTIONAL_WEAK_RESULT_TYPE_H diff --git a/lib/libcxx/include/__fwd/array.h b/lib/libcxx/include/__fwd/array.h new file mode 100644 index 0000000..9a79eff --- /dev/null +++ b/lib/libcxx/include/__fwd/array.h @@ -0,0 +1,26 @@ +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_ARRAY_H +#define _LIBCPP___FWD_ARRAY_H + +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _LIBCPP_TEMPLATE_VIS array; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_ARRAY_H diff --git a/lib/libcxx/include/__fwd/fstream.h b/lib/libcxx/include/__fwd/fstream.h new file mode 100644 index 0000000..b4a112b --- /dev/null +++ b/lib/libcxx/include/__fwd/fstream.h @@ -0,0 +1,53 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_FSTREAM_H +#define _LIBCPP___FWD_FSTREAM_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_filebuf; +template > +class _LIBCPP_TEMPLATE_VIS basic_ifstream; +template > +class _LIBCPP_TEMPLATE_VIS basic_ofstream; +template > +class _LIBCPP_TEMPLATE_VIS basic_fstream; + +using filebuf = basic_filebuf; +using ifstream = basic_ifstream; +using ofstream = basic_ofstream; +using fstream = basic_fstream; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wfilebuf = basic_filebuf; +using wifstream = basic_ifstream; +using wofstream = basic_ofstream; +using wfstream = basic_fstream; +#endif + +template +class _LIBCPP_PREFERRED_NAME(filebuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfilebuf)) basic_filebuf; +template +class _LIBCPP_PREFERRED_NAME(ifstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wifstream)) basic_ifstream; +template +class _LIBCPP_PREFERRED_NAME(ofstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wofstream)) basic_ofstream; +template +class _LIBCPP_PREFERRED_NAME(fstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfstream)) basic_fstream; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_FSTREAM_H diff --git a/lib/libcxx/include/__fwd/get.h b/lib/libcxx/include/__fwd/get.h new file mode 100644 index 0000000..d043414 --- /dev/null +++ b/lib/libcxx/include/__fwd/get.h @@ -0,0 +1,115 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_GET_H +#define _LIBCPP___FWD_GET_H + +#include <__concepts/copyable.h> +#include <__config> +#include <__fwd/array.h> +#include <__fwd/pair.h> +#include <__fwd/subrange.h> +#include <__fwd/tuple.h> +#include <__tuple/tuple_element.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#ifndef _LIBCPP_CXX03_LANG + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +typename tuple_element<_Ip, tuple<_Tp...> >::type& +get(tuple<_Tp...>&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const typename tuple_element<_Ip, tuple<_Tp...> >::type& +get(const tuple<_Tp...>&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +typename tuple_element<_Ip, tuple<_Tp...> >::type&& +get(tuple<_Tp...>&&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const typename tuple_element<_Ip, tuple<_Tp...> >::type&& +get(const tuple<_Tp...>&&) _NOEXCEPT; + +#endif //_LIBCPP_CXX03_LANG + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +typename tuple_element<_Ip, pair<_T1, _T2> >::type& +get(pair<_T1, _T2>&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const typename tuple_element<_Ip, pair<_T1, _T2> >::type& +get(const pair<_T1, _T2>&) _NOEXCEPT; + +#ifndef _LIBCPP_CXX03_LANG +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +typename tuple_element<_Ip, pair<_T1, _T2> >::type&& +get(pair<_T1, _T2>&&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const typename tuple_element<_Ip, pair<_T1, _T2> >::type&& +get(const pair<_T1, _T2>&&) _NOEXCEPT; +#endif + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp& +get(array<_Tp, _Size>&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp& +get(const array<_Tp, _Size>&) _NOEXCEPT; + +#ifndef _LIBCPP_CXX03_LANG +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp&& +get(array<_Tp, _Size>&&) _NOEXCEPT; + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +const _Tp&& +get(const array<_Tp, _Size>&&) _NOEXCEPT; +#endif + +#if _LIBCPP_STD_VER >= 20 + +namespace ranges { + +template + requires((_Index == 0 && copyable<_Iter>) || _Index == 1) +_LIBCPP_HIDE_FROM_ABI constexpr auto get(const subrange<_Iter, _Sent, _Kind>& __subrange); + +template + requires(_Index < 2) +_LIBCPP_HIDE_FROM_ABI constexpr auto get(subrange<_Iter, _Sent, _Kind>&& __subrange); + +} // namespace ranges + +using ranges::get; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_GET_H diff --git a/lib/libcxx/include/__fwd/hash.h b/lib/libcxx/include/__fwd/hash.h new file mode 100644 index 0000000..af9eca8 --- /dev/null +++ b/lib/libcxx/include/__fwd/hash.h @@ -0,0 +1,25 @@ +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_HASH_H +#define _LIBCPP___FWD_HASH_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _LIBCPP_TEMPLATE_VIS hash; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_HASH_H diff --git a/lib/libcxx/include/__fwd/ios.h b/lib/libcxx/include/__fwd/ios.h new file mode 100644 index 0000000..82c865d --- /dev/null +++ b/lib/libcxx/include/__fwd/ios.h @@ -0,0 +1,41 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_IOS_H +#define _LIBCPP___FWD_IOS_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_ios; + +using ios = basic_ios; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wios = basic_ios; +#endif + +template +class _LIBCPP_PREFERRED_NAME(ios) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wios)) basic_ios; + +#if defined(_NEWLIB_VERSION) +// On newlib, off_t is 'long int' +using streamoff = long int; // for char_traits in +#else +using streamoff = long long; // for char_traits in +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_IOS_H diff --git a/lib/libcxx/include/__fwd/istream.h b/lib/libcxx/include/__fwd/istream.h new file mode 100644 index 0000000..a06907a --- /dev/null +++ b/lib/libcxx/include/__fwd/istream.h @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_ISTREAM_H +#define _LIBCPP___FWD_ISTREAM_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_istream; + +template > +class _LIBCPP_TEMPLATE_VIS basic_iostream; + +using istream = basic_istream; +using iostream = basic_iostream; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wistream = basic_istream; +using wiostream = basic_iostream; +#endif + +template +class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistream)) basic_istream; + +template +class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wiostream)) basic_iostream; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_ISTREAM_H diff --git a/lib/libcxx/include/__fwd/mdspan.h b/lib/libcxx/include/__fwd/mdspan.h new file mode 100644 index 0000000..a3628c2 --- /dev/null +++ b/lib/libcxx/include/__fwd/mdspan.h @@ -0,0 +1,60 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +// Kokkos v. 4.0 +// Copyright (2022) National Technology & Engineering +// Solutions of Sandia, LLC (NTESS). +// +// Under the terms of Contract DE-NA0003525 with NTESS, +// the U.S. Government retains certain rights in this software. +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___MDSPAN_LAYOUTS_H +#define _LIBCPP___MDSPAN_LAYOUTS_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +// Layout policy with a mapping which corresponds to FORTRAN-style array layouts +struct layout_left { + template + class mapping; +}; + +// Layout policy with a mapping which corresponds to C-style array layouts +struct layout_right { + template + class mapping; +}; + +/* +// Will be implemented with follow on revision +// Layout policy with a unique mapping where strides are arbitrary +struct layout_stride { + template + class mapping; +}; +*/ + +#endif // _LIBCPP_STD_VER >= 23 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___MDSPAN_LAYOUTS_H diff --git a/lib/libcxx/include/__fwd/memory_resource.h b/lib/libcxx/include/__fwd/memory_resource.h new file mode 100644 index 0000000..03b78ad --- /dev/null +++ b/lib/libcxx/include/__fwd/memory_resource.h @@ -0,0 +1,28 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_MEMORY_RESOURCE_H +#define _LIBCPP___FWD_MEMORY_RESOURCE_H + +#include <__availability> +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace pmr { +template +class _LIBCPP_AVAILABILITY_PMR _LIBCPP_TEMPLATE_VIS polymorphic_allocator; +} // namespace pmr + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_MEMORY_RESOURCE_H diff --git a/lib/libcxx/include/__fwd/ostream.h b/lib/libcxx/include/__fwd/ostream.h new file mode 100644 index 0000000..3347e0f --- /dev/null +++ b/lib/libcxx/include/__fwd/ostream.h @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_OSTREAM_H +#define _LIBCPP___FWD_OSTREAM_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_ostream; + +using ostream = basic_ostream; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wostream = basic_ostream; +#endif + +template +class _LIBCPP_PREFERRED_NAME(ostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostream)) basic_ostream; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_OSTREAM_H diff --git a/lib/libcxx/include/__fwd/pair.h b/lib/libcxx/include/__fwd/pair.h new file mode 100644 index 0000000..3844014 --- /dev/null +++ b/lib/libcxx/include/__fwd/pair.h @@ -0,0 +1,25 @@ +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_PAIR_H +#define _LIBCPP___FWD_PAIR_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _LIBCPP_TEMPLATE_VIS pair; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_PAIR_H diff --git a/lib/libcxx/include/__fwd/span.h b/lib/libcxx/include/__fwd/span.h new file mode 100644 index 0000000..e9fa703 --- /dev/null +++ b/lib/libcxx/include/__fwd/span.h @@ -0,0 +1,37 @@ +// -*- C++ -*- +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_SPAN_H +#define _LIBCPP___FWD_SPAN_H + +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +inline constexpr size_t dynamic_extent = numeric_limits::max(); +template class span; + +#endif + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___FWD_SPAN_H diff --git a/lib/libcxx/include/__fwd/sstream.h b/lib/libcxx/include/__fwd/sstream.h new file mode 100644 index 0000000..e2d46fb --- /dev/null +++ b/lib/libcxx/include/__fwd/sstream.h @@ -0,0 +1,57 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_SSTREAM_H +#define _LIBCPP___FWD_SSTREAM_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template , class _Allocator = allocator<_CharT> > +class _LIBCPP_TEMPLATE_VIS basic_stringbuf; + +template , class _Allocator = allocator<_CharT> > +class _LIBCPP_TEMPLATE_VIS basic_istringstream; +template , class _Allocator = allocator<_CharT> > +class _LIBCPP_TEMPLATE_VIS basic_ostringstream; +template , class _Allocator = allocator<_CharT> > +class _LIBCPP_TEMPLATE_VIS basic_stringstream; + +using stringbuf = basic_stringbuf; +using istringstream = basic_istringstream; +using ostringstream = basic_ostringstream; +using stringstream = basic_stringstream; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wstringbuf = basic_stringbuf; +using wistringstream = basic_istringstream; +using wostringstream = basic_ostringstream; +using wstringstream = basic_stringstream; +#endif + +template +class _LIBCPP_PREFERRED_NAME(stringbuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringbuf)) basic_stringbuf; +template +class _LIBCPP_PREFERRED_NAME(istringstream) + _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistringstream)) basic_istringstream; +template +class _LIBCPP_PREFERRED_NAME(ostringstream) + _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostringstream)) basic_ostringstream; +template +class _LIBCPP_PREFERRED_NAME(stringstream) + _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringstream)) basic_stringstream; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_SSTREAM_H diff --git a/lib/libcxx/include/__fwd/streambuf.h b/lib/libcxx/include/__fwd/streambuf.h new file mode 100644 index 0000000..b35afa6 --- /dev/null +++ b/lib/libcxx/include/__fwd/streambuf.h @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_STREAMBUF_H +#define _LIBCPP___FWD_STREAMBUF_H + +#include <__config> +#include <__fwd/string.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_streambuf; + +using streambuf = basic_streambuf; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wstreambuf = basic_streambuf; +#endif + +template +class _LIBCPP_PREFERRED_NAME(streambuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstreambuf)) basic_streambuf; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_STREAMBUF_H diff --git a/lib/libcxx/include/__fwd/string.h b/lib/libcxx/include/__fwd/string.h new file mode 100644 index 0000000..0321323 --- /dev/null +++ b/lib/libcxx/include/__fwd/string.h @@ -0,0 +1,110 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_STRING_H +#define _LIBCPP___FWD_STRING_H + +#include <__availability> +#include <__config> +#include <__fwd/memory_resource.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _LIBCPP_TEMPLATE_VIS char_traits; +template <> +struct char_traits; + +#ifndef _LIBCPP_HAS_NO_CHAR8_T +template <> +struct char_traits; +#endif + +template <> +struct char_traits; +template <> +struct char_traits; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <> +struct char_traits; +#endif + +template +class _LIBCPP_TEMPLATE_VIS allocator; + +template , class _Allocator = allocator<_CharT> > +class _LIBCPP_TEMPLATE_VIS basic_string; + +using string = basic_string; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wstring = basic_string; +#endif + +#ifndef _LIBCPP_HAS_NO_CHAR8_T +using u8string = basic_string; +#endif + +using u16string = basic_string; +using u32string = basic_string; + +#if _LIBCPP_STD_VER >= 17 + +namespace pmr { +template > +using basic_string _LIBCPP_AVAILABILITY_PMR = std::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>; + +using string _LIBCPP_AVAILABILITY_PMR = basic_string; + +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +using wstring _LIBCPP_AVAILABILITY_PMR = basic_string; +# endif + +# ifndef _LIBCPP_HAS_NO_CHAR8_T +using u8string _LIBCPP_AVAILABILITY_PMR = basic_string; +# endif + +using u16string _LIBCPP_AVAILABILITY_PMR = basic_string; +using u32string _LIBCPP_AVAILABILITY_PMR = basic_string; +} // namespace pmr + +#endif // _LIBCPP_STD_VER >= 17 + +// clang-format off +template +class _LIBCPP_PREFERRED_NAME(string) +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + _LIBCPP_PREFERRED_NAME(wstring) +#endif +#ifndef _LIBCPP_HAS_NO_CHAR8_T + _LIBCPP_PREFERRED_NAME(u8string) +#endif + _LIBCPP_PREFERRED_NAME(u16string) + _LIBCPP_PREFERRED_NAME(u32string) +#if _LIBCPP_STD_VER >= 17 + _LIBCPP_PREFERRED_NAME(pmr::string) +# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + _LIBCPP_PREFERRED_NAME(pmr::wstring) +# endif +# ifndef _LIBCPP_HAS_NO_CHAR8_T + _LIBCPP_PREFERRED_NAME(pmr::u8string) +# endif + _LIBCPP_PREFERRED_NAME(pmr::u16string) + _LIBCPP_PREFERRED_NAME(pmr::u32string) +#endif + basic_string; +// clang-format on + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_STRING_H diff --git a/lib/libcxx/include/__fwd/string_view.h b/lib/libcxx/include/__fwd/string_view.h new file mode 100644 index 0000000..4818990 --- /dev/null +++ b/lib/libcxx/include/__fwd/string_view.h @@ -0,0 +1,50 @@ +// -*- C++ -*- +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_STRING_VIEW_H +#define _LIBCPP___FWD_STRING_VIEW_H + +#include <__config> +#include // char_traits + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template > +class _LIBCPP_TEMPLATE_VIS basic_string_view; + +typedef basic_string_view string_view; +#ifndef _LIBCPP_HAS_NO_CHAR8_T +typedef basic_string_view u8string_view; +#endif +typedef basic_string_view u16string_view; +typedef basic_string_view u32string_view; +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +typedef basic_string_view wstring_view; +#endif + +// clang-format off +template +class _LIBCPP_PREFERRED_NAME(string_view) +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS + _LIBCPP_PREFERRED_NAME(wstring_view) +#endif +#ifndef _LIBCPP_HAS_NO_CHAR8_T + _LIBCPP_PREFERRED_NAME(u8string_view) +#endif + _LIBCPP_PREFERRED_NAME(u16string_view) + _LIBCPP_PREFERRED_NAME(u32string_view) + basic_string_view; +// clang-format on +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_STRING_VIEW_H diff --git a/lib/libcxx/include/__fwd/subrange.h b/lib/libcxx/include/__fwd/subrange.h new file mode 100644 index 0000000..8f72392 --- /dev/null +++ b/lib/libcxx/include/__fwd/subrange.h @@ -0,0 +1,38 @@ +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_SUBRANGE_H +#define _LIBCPP___FWD_SUBRANGE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +#include <__iterator/concepts.h> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +enum class _LIBCPP_ENUM_VIS subrange_kind : bool { unsized, sized }; + +template _Sent, subrange_kind _Kind> + requires(_Kind == subrange_kind::sized || !sized_sentinel_for<_Sent, _Iter>) +class _LIBCPP_TEMPLATE_VIS subrange; + +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___FWD_SUBRANGE_H diff --git a/lib/libcxx/include/__fwd/tuple.h b/lib/libcxx/include/__fwd/tuple.h new file mode 100644 index 0000000..16b3fab --- /dev/null +++ b/lib/libcxx/include/__fwd/tuple.h @@ -0,0 +1,29 @@ +//===---------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===---------------------------------------------------------------------===// + +#ifndef _LIBCPP___FWD_TUPLE_H +#define _LIBCPP___FWD_TUPLE_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#ifndef _LIBCPP_CXX03_LANG + +template +class _LIBCPP_TEMPLATE_VIS tuple; + +#endif // _LIBCPP_CXX03_LANG + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___FWD_TUPLE_H diff --git a/lib/libcxx/include/__hash_table b/lib/libcxx/include/__hash_table new file mode 100644 index 0000000..2ae7afd --- /dev/null +++ b/lib/libcxx/include/__hash_table @@ -0,0 +1,2483 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___HASH_TABLE +#define _LIBCPP___HASH_TABLE + +#include <__algorithm/max.h> +#include <__algorithm/min.h> +#include <__assert> +#include <__bit/countl.h> +#include <__config> +#include <__functional/hash.h> +#include <__functional/invoke.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include <__memory/allocator_traits.h> +#include <__memory/compressed_pair.h> +#include <__memory/pointer_traits.h> +#include <__memory/swap_allocator.h> +#include <__memory/unique_ptr.h> +#include <__type_traits/can_extract_key.h> +#include <__type_traits/conditional.h> +#include <__type_traits/is_const.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_nothrow_constructible.h> +#include <__type_traits/is_nothrow_copy_constructible.h> +#include <__type_traits/is_nothrow_default_constructible.h> +#include <__type_traits/is_nothrow_move_assignable.h> +#include <__type_traits/is_nothrow_move_constructible.h> +#include <__type_traits/is_pointer.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_swappable.h> +#include <__type_traits/remove_const.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/pair.h> +#include <__utility/swap.h> +#include +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct __hash_value_type; + +template +struct __is_hash_value_type_imp : false_type {}; + +template +struct __is_hash_value_type_imp<__hash_value_type<_Key, _Value> > : true_type {}; + +template +struct __is_hash_value_type : false_type {}; + +template +struct __is_hash_value_type<_One> : __is_hash_value_type_imp<__remove_cvref_t<_One> > {}; + +_LIBCPP_EXPORTED_FROM_ABI size_t __next_prime(size_t __n); + +template +struct __hash_node_base +{ + typedef typename pointer_traits<_NodePtr>::element_type __node_type; + typedef __hash_node_base __first_node; + typedef __rebind_pointer_t<_NodePtr, __first_node> __node_base_pointer; + typedef _NodePtr __node_pointer; + +#if defined(_LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB) + typedef __node_base_pointer __next_pointer; +#else + typedef __conditional_t::value, __node_base_pointer, __node_pointer> __next_pointer; +#endif + + __next_pointer __next_; + + _LIBCPP_INLINE_VISIBILITY + __next_pointer __ptr() _NOEXCEPT { + return static_cast<__next_pointer>( + pointer_traits<__node_base_pointer>::pointer_to(*this)); + } + + _LIBCPP_INLINE_VISIBILITY + __node_pointer __upcast() _NOEXCEPT { + return static_cast<__node_pointer>( + pointer_traits<__node_base_pointer>::pointer_to(*this)); + } + + _LIBCPP_INLINE_VISIBILITY + size_t __hash() const _NOEXCEPT { + return static_cast<__node_type const&>(*this).__hash_; + } + + _LIBCPP_INLINE_VISIBILITY __hash_node_base() _NOEXCEPT : __next_(nullptr) {} +}; + +template +struct _LIBCPP_STANDALONE_DEBUG __hash_node + : public __hash_node_base + < + __rebind_pointer_t<_VoidPtr, __hash_node<_Tp, _VoidPtr> > + > +{ + typedef _Tp __node_value_type; + + size_t __hash_; + __node_value_type __value_; +}; + +inline _LIBCPP_INLINE_VISIBILITY +bool +__is_hash_power2(size_t __bc) +{ + return __bc > 2 && !(__bc & (__bc - 1)); +} + +inline _LIBCPP_INLINE_VISIBILITY +size_t +__constrain_hash(size_t __h, size_t __bc) +{ + return !(__bc & (__bc - 1)) ? __h & (__bc - 1) : + (__h < __bc ? __h : __h % __bc); +} + +inline _LIBCPP_INLINE_VISIBILITY +size_t +__next_hash_pow2(size_t __n) +{ + return __n < 2 ? __n : (size_t(1) << (numeric_limits::digits - __libcpp_clz(__n-1))); +} + + +template class __hash_table; + +template class _LIBCPP_TEMPLATE_VIS __hash_iterator; +template class _LIBCPP_TEMPLATE_VIS __hash_const_iterator; +template class _LIBCPP_TEMPLATE_VIS __hash_local_iterator; +template class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator; +template class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; +template class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator; + +template +struct __hash_key_value_types { + static_assert(!is_reference<_Tp>::value && !is_const<_Tp>::value, ""); + typedef _Tp key_type; + typedef _Tp __node_value_type; + typedef _Tp __container_value_type; + static const bool __is_map = false; + + _LIBCPP_INLINE_VISIBILITY + static key_type const& __get_key(_Tp const& __v) { + return __v; + } + _LIBCPP_INLINE_VISIBILITY + static __container_value_type const& __get_value(__node_value_type const& __v) { + return __v; + } + _LIBCPP_INLINE_VISIBILITY + static __container_value_type* __get_ptr(__node_value_type& __n) { + return _VSTD::addressof(__n); + } + _LIBCPP_INLINE_VISIBILITY + static __container_value_type&& __move(__node_value_type& __v) { + return _VSTD::move(__v); + } +}; + +template +struct __hash_key_value_types<__hash_value_type<_Key, _Tp> > { + typedef _Key key_type; + typedef _Tp mapped_type; + typedef __hash_value_type<_Key, _Tp> __node_value_type; + typedef pair __container_value_type; + typedef __container_value_type __map_value_type; + static const bool __is_map = true; + + _LIBCPP_INLINE_VISIBILITY + static key_type const& __get_key(__container_value_type const& __v) { + return __v.first; + } + + template + _LIBCPP_INLINE_VISIBILITY + static __enable_if_t<__is_same_uncvref<_Up, __node_value_type>::value, __container_value_type const&> + __get_value(_Up& __t) { + return __t.__get_value(); + } + + template + _LIBCPP_INLINE_VISIBILITY + static __enable_if_t<__is_same_uncvref<_Up, __container_value_type>::value, __container_value_type const&> + __get_value(_Up& __t) { + return __t; + } + + _LIBCPP_INLINE_VISIBILITY + static __container_value_type* __get_ptr(__node_value_type& __n) { + return _VSTD::addressof(__n.__get_value()); + } + _LIBCPP_INLINE_VISIBILITY + static pair __move(__node_value_type& __v) { + return __v.__move(); + } +}; + +template , + bool = _KVTypes::__is_map> +struct __hash_map_pointer_types {}; + +template +struct __hash_map_pointer_types<_Tp, _AllocPtr, _KVTypes, true> { + typedef typename _KVTypes::__map_value_type _Mv; + typedef __rebind_pointer_t<_AllocPtr, _Mv> + __map_value_type_pointer; + typedef __rebind_pointer_t<_AllocPtr, const _Mv> + __const_map_value_type_pointer; +}; + +template ::element_type> +struct __hash_node_types; + +template +struct __hash_node_types<_NodePtr, __hash_node<_Tp, _VoidPtr> > + : public __hash_key_value_types<_Tp>, __hash_map_pointer_types<_Tp, _VoidPtr> + +{ + typedef __hash_key_value_types<_Tp> __base; + +public: + typedef ptrdiff_t difference_type; + typedef size_t size_type; + + typedef __rebind_pointer_t<_NodePtr, void> __void_pointer; + + typedef typename pointer_traits<_NodePtr>::element_type __node_type; + typedef _NodePtr __node_pointer; + + typedef __hash_node_base<__node_pointer> __node_base_type; + typedef __rebind_pointer_t<_NodePtr, __node_base_type> + __node_base_pointer; + + typedef typename __node_base_type::__next_pointer __next_pointer; + + typedef _Tp __node_value_type; + typedef __rebind_pointer_t<_VoidPtr, __node_value_type> + __node_value_type_pointer; + typedef __rebind_pointer_t<_VoidPtr, const __node_value_type> + __const_node_value_type_pointer; + +private: + static_assert(!is_const<__node_type>::value, + "_NodePtr should never be a pointer to const"); + static_assert((is_same::element_type, void>::value), + "_VoidPtr does not point to unqualified void type"); + static_assert((is_same<__rebind_pointer_t<_VoidPtr, __node_type>, + _NodePtr>::value), "_VoidPtr does not rebind to _NodePtr."); +}; + +template +struct __hash_node_types_from_iterator; +template +struct __hash_node_types_from_iterator<__hash_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template +struct __hash_node_types_from_iterator<__hash_const_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template +struct __hash_node_types_from_iterator<__hash_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template +struct __hash_node_types_from_iterator<__hash_const_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; + + +template +struct __make_hash_node_types { + typedef __hash_node<_NodeValueTp, _VoidPtr> _NodeTp; + typedef __rebind_pointer_t<_VoidPtr, _NodeTp> _NodePtr; + typedef __hash_node_types<_NodePtr> type; +}; + +template +class _LIBCPP_TEMPLATE_VIS __hash_iterator +{ + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef value_type& reference; + typedef typename _NodeTypes::__node_value_type_pointer pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_iterator() _NOEXCEPT : __node_(nullptr) { + } + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + return pointer_traits::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator& operator++() { + __node_ = __node_->__next_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator operator++(int) + { + __hash_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_iterator& __x, const __hash_iterator& __y) + { + return __x.__node_ == __y.__node_; + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_iterator& __x, const __hash_iterator& __y) + {return !(__x == __y);} + +private: + _LIBCPP_INLINE_VISIBILITY + explicit __hash_iterator(__next_pointer __node) _NOEXCEPT + : __node_(__node) + { + } + + template friend class __hash_table; + template friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator; + template friend class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; + template friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template +class _LIBCPP_TEMPLATE_VIS __hash_const_iterator +{ + static_assert(!is_const::element_type>::value, ""); + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + +public: + typedef __hash_iterator<_NodePtr> __non_const_iterator; + + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef const value_type& reference; + typedef typename _NodeTypes::__const_node_value_type_pointer pointer; + + + _LIBCPP_INLINE_VISIBILITY __hash_const_iterator() _NOEXCEPT : __node_(nullptr) { + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(const __non_const_iterator& __x) _NOEXCEPT + : __node_(__x.__node_) + { + } + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + return __node_->__upcast()->__value_; + } + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + return pointer_traits::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator& operator++() { + __node_ = __node_->__next_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator operator++(int) + { + __hash_const_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_const_iterator& __x, const __hash_const_iterator& __y) + { + return __x.__node_ == __y.__node_; + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_const_iterator& __x, const __hash_const_iterator& __y) + {return !(__x == __y);} + +private: + _LIBCPP_INLINE_VISIBILITY + explicit __hash_const_iterator(__next_pointer __node) _NOEXCEPT + : __node_(__node) + { + } + + template friend class __hash_table; + template friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator; + template friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template +class _LIBCPP_TEMPLATE_VIS __hash_local_iterator +{ + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + size_t __bucket_; + size_t __bucket_count_; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef value_type& reference; + typedef typename _NodeTypes::__node_value_type_pointer pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_local_iterator() _NOEXCEPT : __node_(nullptr) { + } + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + return pointer_traits::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator& operator++() { + __node_ = __node_->__next_; + if (__node_ != nullptr && std::__constrain_hash(__node_->__hash(), __bucket_count_) != __bucket_) + __node_ = nullptr; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator operator++(int) + { + __hash_local_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_local_iterator& __x, const __hash_local_iterator& __y) + { + return __x.__node_ == __y.__node_; + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_local_iterator& __x, const __hash_local_iterator& __y) + {return !(__x == __y);} + +private: + _LIBCPP_INLINE_VISIBILITY + explicit __hash_local_iterator(__next_pointer __node, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } + + template friend class __hash_table; + template friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator; + template friend class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; +}; + +template +class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator +{ + typedef __hash_node_types<_ConstNodePtr> _NodeTypes; + typedef _ConstNodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + size_t __bucket_; + size_t __bucket_count_; + + typedef pointer_traits<__node_pointer> __pointer_traits; + typedef typename __pointer_traits::element_type __node; + typedef __remove_const_t<__node> __non_const_node; + typedef __rebind_pointer_t<__node_pointer, __non_const_node> + __non_const_node_pointer; +public: + typedef __hash_local_iterator<__non_const_node_pointer> + __non_const_iterator; + + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef const value_type& reference; + typedef typename _NodeTypes::__const_node_value_type_pointer pointer; + + + _LIBCPP_INLINE_VISIBILITY __hash_const_local_iterator() _NOEXCEPT : __node_(nullptr) { + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(const __non_const_iterator& __x) _NOEXCEPT + : __node_(__x.__node_), + __bucket_(__x.__bucket_), + __bucket_count_(__x.__bucket_count_) + { + } + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + return pointer_traits::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator& operator++() { + __node_ = __node_->__next_; + if (__node_ != nullptr && std::__constrain_hash(__node_->__hash(), __bucket_count_) != __bucket_) + __node_ = nullptr; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator operator++(int) + { + __hash_const_local_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_const_local_iterator& __x, const __hash_const_local_iterator& __y) + { + return __x.__node_ == __y.__node_; + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_const_local_iterator& __x, const __hash_const_local_iterator& __y) + {return !(__x == __y);} + +private: + _LIBCPP_INLINE_VISIBILITY + explicit __hash_const_local_iterator(__next_pointer __node_ptr, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node_ptr), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } + + template friend class __hash_table; + template friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator; +}; + +template +class __bucket_list_deallocator +{ + typedef _Alloc allocator_type; + typedef allocator_traits __alloc_traits; + typedef typename __alloc_traits::size_type size_type; + + __compressed_pair __data_; +public: + typedef typename __alloc_traits::pointer pointer; + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator() + _NOEXCEPT_(is_nothrow_default_constructible::value) + : __data_(0, __default_init_tag()) {} + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator(const allocator_type& __a, size_type __size) + _NOEXCEPT_(is_nothrow_copy_constructible::value) + : __data_(__size, __a) {} + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator(__bucket_list_deallocator&& __x) + _NOEXCEPT_(is_nothrow_move_constructible::value) + : __data_(_VSTD::move(__x.__data_)) + { + __x.size() = 0; + } + + _LIBCPP_INLINE_VISIBILITY + size_type& size() _NOEXCEPT {return __data_.first();} + _LIBCPP_INLINE_VISIBILITY + size_type size() const _NOEXCEPT {return __data_.first();} + + _LIBCPP_INLINE_VISIBILITY + allocator_type& __alloc() _NOEXCEPT {return __data_.second();} + _LIBCPP_INLINE_VISIBILITY + const allocator_type& __alloc() const _NOEXCEPT {return __data_.second();} + + _LIBCPP_INLINE_VISIBILITY + void operator()(pointer __p) _NOEXCEPT + { + __alloc_traits::deallocate(__alloc(), __p, size()); + } +}; + +template class __hash_map_node_destructor; + +template +class __hash_node_destructor +{ + typedef _Alloc allocator_type; + typedef allocator_traits __alloc_traits; + +public: + typedef typename __alloc_traits::pointer pointer; +private: + typedef __hash_node_types _NodeTypes; + + allocator_type& __na_; + +public: + bool __value_constructed; + + _LIBCPP_HIDE_FROM_ABI __hash_node_destructor(__hash_node_destructor const&) = default; + _LIBCPP_HIDE_FROM_ABI __hash_node_destructor& operator=(const __hash_node_destructor&) = delete; + + + _LIBCPP_INLINE_VISIBILITY + explicit __hash_node_destructor(allocator_type& __na, + bool __constructed = false) _NOEXCEPT + : __na_(__na), + __value_constructed(__constructed) + {} + + _LIBCPP_INLINE_VISIBILITY + void operator()(pointer __p) _NOEXCEPT + { + if (__value_constructed) + __alloc_traits::destroy(__na_, _NodeTypes::__get_ptr(__p->__value_)); + if (__p) + __alloc_traits::deallocate(__na_, __p, 1); + } + + template friend class __hash_map_node_destructor; +}; + +#if _LIBCPP_STD_VER >= 17 +template +struct __generic_container_node_destructor; + +template +struct __generic_container_node_destructor<__hash_node<_Tp, _VoidPtr>, _Alloc> + : __hash_node_destructor<_Alloc> +{ + using __hash_node_destructor<_Alloc>::__hash_node_destructor; +}; +#endif + +template +struct __enforce_unordered_container_requirements { +#ifndef _LIBCPP_CXX03_LANG + static_assert(__check_hash_requirements<_Key, _Hash>::value, + "the specified hash does not meet the Hash requirements"); + static_assert(is_copy_constructible<_Equal>::value, + "the specified comparator is required to be copy constructible"); +#endif + typedef int type; +}; + +template +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_DIAGNOSE_WARNING(!__invokable<_Equal const&, _Key const&, _Key const&>::value, + "the specified comparator type does not provide a viable const call operator") + _LIBCPP_DIAGNOSE_WARNING(!__invokable<_Hash const&, _Key const&>::value, + "the specified hash functor does not provide a viable const call operator") +#endif +typename __enforce_unordered_container_requirements<_Key, _Hash, _Equal>::type +__diagnose_unordered_container_requirements(int); + +// This dummy overload is used so that the compiler won't emit a spurious +// "no matching function for call to __diagnose_unordered_xxx" diagnostic +// when the overload above causes a hard error. +template +int __diagnose_unordered_container_requirements(void*); + +template +class __hash_table +{ +public: + typedef _Tp value_type; + typedef _Hash hasher; + typedef _Equal key_equal; + typedef _Alloc allocator_type; + +private: + typedef allocator_traits __alloc_traits; + typedef typename + __make_hash_node_types::type + _NodeTypes; +public: + + typedef typename _NodeTypes::__node_value_type __node_value_type; + typedef typename _NodeTypes::__container_value_type __container_value_type; + typedef typename _NodeTypes::key_type key_type; + typedef value_type& reference; + typedef const value_type& const_reference; + typedef typename __alloc_traits::pointer pointer; + typedef typename __alloc_traits::const_pointer const_pointer; +#ifndef _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE + typedef typename __alloc_traits::size_type size_type; +#else + typedef typename _NodeTypes::size_type size_type; +#endif + typedef typename _NodeTypes::difference_type difference_type; +public: + // Create __node + + typedef typename _NodeTypes::__node_type __node; + typedef __rebind_alloc<__alloc_traits, __node> __node_allocator; + typedef allocator_traits<__node_allocator> __node_traits; + typedef typename _NodeTypes::__void_pointer __void_pointer; + typedef typename _NodeTypes::__node_pointer __node_pointer; + typedef typename _NodeTypes::__node_pointer __node_const_pointer; + typedef typename _NodeTypes::__node_base_type __first_node; + typedef typename _NodeTypes::__node_base_pointer __node_base_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + +private: + // check for sane allocator pointer rebinding semantics. Rebinding the + // allocator for a new pointer type should be exactly the same as rebinding + // the pointer using 'pointer_traits'. + static_assert((is_same<__node_pointer, typename __node_traits::pointer>::value), + "Allocator does not rebind pointers in a sane manner."); + typedef __rebind_alloc<__node_traits, __first_node> __node_base_allocator; + typedef allocator_traits<__node_base_allocator> __node_base_traits; + static_assert((is_same<__node_base_pointer, typename __node_base_traits::pointer>::value), + "Allocator does not rebind pointers in a sane manner."); + +private: + + typedef __rebind_alloc<__node_traits, __next_pointer> __pointer_allocator; + typedef __bucket_list_deallocator<__pointer_allocator> __bucket_list_deleter; + typedef unique_ptr<__next_pointer[], __bucket_list_deleter> __bucket_list; + typedef allocator_traits<__pointer_allocator> __pointer_alloc_traits; + typedef typename __bucket_list_deleter::pointer __node_pointer_pointer; + + // --- Member data begin --- + __bucket_list __bucket_list_; + __compressed_pair<__first_node, __node_allocator> __p1_; + __compressed_pair __p2_; + __compressed_pair __p3_; + // --- Member data end --- + + _LIBCPP_INLINE_VISIBILITY + size_type& size() _NOEXCEPT {return __p2_.first();} +public: + _LIBCPP_INLINE_VISIBILITY + size_type size() const _NOEXCEPT {return __p2_.first();} + + _LIBCPP_INLINE_VISIBILITY + hasher& hash_function() _NOEXCEPT {return __p2_.second();} + _LIBCPP_INLINE_VISIBILITY + const hasher& hash_function() const _NOEXCEPT {return __p2_.second();} + + _LIBCPP_INLINE_VISIBILITY + float& max_load_factor() _NOEXCEPT {return __p3_.first();} + _LIBCPP_INLINE_VISIBILITY + float max_load_factor() const _NOEXCEPT {return __p3_.first();} + + _LIBCPP_INLINE_VISIBILITY + key_equal& key_eq() _NOEXCEPT {return __p3_.second();} + _LIBCPP_INLINE_VISIBILITY + const key_equal& key_eq() const _NOEXCEPT {return __p3_.second();} + + _LIBCPP_INLINE_VISIBILITY + __node_allocator& __node_alloc() _NOEXCEPT {return __p1_.second();} + _LIBCPP_INLINE_VISIBILITY + const __node_allocator& __node_alloc() const _NOEXCEPT + {return __p1_.second();} + +public: + typedef __hash_iterator<__node_pointer> iterator; + typedef __hash_const_iterator<__node_pointer> const_iterator; + typedef __hash_local_iterator<__node_pointer> local_iterator; + typedef __hash_const_local_iterator<__node_pointer> const_local_iterator; + + _LIBCPP_INLINE_VISIBILITY + __hash_table() + _NOEXCEPT_( + is_nothrow_default_constructible<__bucket_list>::value && + is_nothrow_default_constructible<__first_node>::value && + is_nothrow_default_constructible<__node_allocator>::value && + is_nothrow_default_constructible::value && + is_nothrow_default_constructible::value); + _LIBCPP_INLINE_VISIBILITY + __hash_table(const hasher& __hf, const key_equal& __eql); + _LIBCPP_HIDE_FROM_ABI __hash_table(const hasher& __hf, const key_equal& __eql, + const allocator_type& __a); + _LIBCPP_HIDE_FROM_ABI explicit __hash_table(const allocator_type& __a); + _LIBCPP_HIDE_FROM_ABI __hash_table(const __hash_table& __u); + _LIBCPP_HIDE_FROM_ABI __hash_table(const __hash_table& __u, const allocator_type& __a); + _LIBCPP_HIDE_FROM_ABI __hash_table(__hash_table&& __u) + _NOEXCEPT_( + is_nothrow_move_constructible<__bucket_list>::value && + is_nothrow_move_constructible<__first_node>::value && + is_nothrow_move_constructible<__node_allocator>::value && + is_nothrow_move_constructible::value && + is_nothrow_move_constructible::value); + _LIBCPP_HIDE_FROM_ABI __hash_table(__hash_table&& __u, const allocator_type& __a); + _LIBCPP_HIDE_FROM_ABI ~__hash_table(); + + _LIBCPP_HIDE_FROM_ABI __hash_table& operator=(const __hash_table& __u); + _LIBCPP_INLINE_VISIBILITY + __hash_table& operator=(__hash_table&& __u) + _NOEXCEPT_( + __node_traits::propagate_on_container_move_assignment::value && + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable::value && + is_nothrow_move_assignable::value); + template + _LIBCPP_HIDE_FROM_ABI void __assign_unique(_InputIterator __first, _InputIterator __last); + template + _LIBCPP_HIDE_FROM_ABI void __assign_multi(_InputIterator __first, _InputIterator __last); + + _LIBCPP_INLINE_VISIBILITY + size_type max_size() const _NOEXCEPT + { + return _VSTD::min( + __node_traits::max_size(__node_alloc()), + numeric_limits::max() + ); + } + +private: + _LIBCPP_INLINE_VISIBILITY + __next_pointer __node_insert_multi_prepare(size_t __cp_hash, + value_type& __cp_val); + _LIBCPP_INLINE_VISIBILITY + void __node_insert_multi_perform(__node_pointer __cp, + __next_pointer __pn) _NOEXCEPT; + + _LIBCPP_INLINE_VISIBILITY + __next_pointer __node_insert_unique_prepare(size_t __nd_hash, + value_type& __nd_val); + _LIBCPP_INLINE_VISIBILITY + void __node_insert_unique_perform(__node_pointer __ptr) _NOEXCEPT; + +public: + _LIBCPP_INLINE_VISIBILITY + pair __node_insert_unique(__node_pointer __nd); + _LIBCPP_INLINE_VISIBILITY + iterator __node_insert_multi(__node_pointer __nd); + _LIBCPP_INLINE_VISIBILITY + iterator __node_insert_multi(const_iterator __p, + __node_pointer __nd); + + template + _LIBCPP_INLINE_VISIBILITY + pair __emplace_unique_key_args(_Key const& __k, _Args&&... __args); + + template + _LIBCPP_INLINE_VISIBILITY + pair __emplace_unique_impl(_Args&&... __args); + + template + _LIBCPP_INLINE_VISIBILITY + pair __emplace_unique(_Pp&& __x) { + return __emplace_unique_extract_key(_VSTD::forward<_Pp>(__x), + __can_extract_key<_Pp, key_type>()); + } + + template + _LIBCPP_INLINE_VISIBILITY + __enable_if_t<__can_extract_map_key<_First, key_type, __container_value_type>::value, pair > + __emplace_unique(_First&& __f, _Second&& __s) { + return __emplace_unique_key_args(__f, _VSTD::forward<_First>(__f), + _VSTD::forward<_Second>(__s)); + } + + template + _LIBCPP_INLINE_VISIBILITY + pair __emplace_unique(_Args&&... __args) { + return __emplace_unique_impl(_VSTD::forward<_Args>(__args)...); + } + + template + _LIBCPP_INLINE_VISIBILITY + pair + __emplace_unique_extract_key(_Pp&& __x, __extract_key_fail_tag) { + return __emplace_unique_impl(_VSTD::forward<_Pp>(__x)); + } + template + _LIBCPP_INLINE_VISIBILITY + pair + __emplace_unique_extract_key(_Pp&& __x, __extract_key_self_tag) { + return __emplace_unique_key_args(__x, _VSTD::forward<_Pp>(__x)); + } + template + _LIBCPP_INLINE_VISIBILITY + pair + __emplace_unique_extract_key(_Pp&& __x, __extract_key_first_tag) { + return __emplace_unique_key_args(__x.first, _VSTD::forward<_Pp>(__x)); + } + + template + _LIBCPP_INLINE_VISIBILITY + iterator __emplace_multi(_Args&&... __args); + template + _LIBCPP_INLINE_VISIBILITY + iterator __emplace_hint_multi(const_iterator __p, _Args&&... __args); + + + _LIBCPP_INLINE_VISIBILITY + pair + __insert_unique(__container_value_type&& __x) { + return __emplace_unique_key_args(_NodeTypes::__get_key(__x), _VSTD::move(__x)); + } + + template ::value> > + _LIBCPP_INLINE_VISIBILITY + pair __insert_unique(_Pp&& __x) { + return __emplace_unique(_VSTD::forward<_Pp>(__x)); + } + + template + _LIBCPP_INLINE_VISIBILITY + iterator __insert_multi(_Pp&& __x) { + return __emplace_multi(_VSTD::forward<_Pp>(__x)); + } + + template + _LIBCPP_INLINE_VISIBILITY + iterator __insert_multi(const_iterator __p, _Pp&& __x) { + return __emplace_hint_multi(__p, _VSTD::forward<_Pp>(__x)); + } + + _LIBCPP_INLINE_VISIBILITY + pair __insert_unique(const __container_value_type& __x) { + return __emplace_unique_key_args(_NodeTypes::__get_key(__x), __x); + } + +#if _LIBCPP_STD_VER >= 17 + template + _LIBCPP_INLINE_VISIBILITY + _InsertReturnType __node_handle_insert_unique(_NodeHandle&& __nh); + template + _LIBCPP_INLINE_VISIBILITY + iterator __node_handle_insert_unique(const_iterator __hint, + _NodeHandle&& __nh); + template + _LIBCPP_INLINE_VISIBILITY + void __node_handle_merge_unique(_Table& __source); + + template + _LIBCPP_INLINE_VISIBILITY + iterator __node_handle_insert_multi(_NodeHandle&& __nh); + template + _LIBCPP_INLINE_VISIBILITY + iterator __node_handle_insert_multi(const_iterator __hint, _NodeHandle&& __nh); + template + _LIBCPP_INLINE_VISIBILITY + void __node_handle_merge_multi(_Table& __source); + + template + _LIBCPP_INLINE_VISIBILITY + _NodeHandle __node_handle_extract(key_type const& __key); + template + _LIBCPP_INLINE_VISIBILITY + _NodeHandle __node_handle_extract(const_iterator __it); +#endif + + _LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY void __rehash_unique(size_type __n) { __rehash(__n); } + _LIBCPP_INLINE_VISIBILITY void __rehash_multi(size_type __n) { __rehash(__n); } + _LIBCPP_INLINE_VISIBILITY void __reserve_unique(size_type __n) + { + __rehash_unique(static_cast(std::ceil(__n / max_load_factor()))); + } + _LIBCPP_INLINE_VISIBILITY void __reserve_multi(size_type __n) + { + __rehash_multi(static_cast(std::ceil(__n / max_load_factor()))); + } + + _LIBCPP_INLINE_VISIBILITY + size_type bucket_count() const _NOEXCEPT + { + return __bucket_list_.get_deleter().size(); + } + + _LIBCPP_INLINE_VISIBILITY + iterator begin() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + iterator end() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + const_iterator begin() const _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + const_iterator end() const _NOEXCEPT; + + template + _LIBCPP_INLINE_VISIBILITY + size_type bucket(const _Key& __k) const + { + _LIBCPP_ASSERT_UNCATEGORIZED(bucket_count() > 0, + "unordered container::bucket(key) called when bucket_count() == 0"); + return std::__constrain_hash(hash_function()(__k), bucket_count()); + } + + template + _LIBCPP_HIDE_FROM_ABI iterator find(const _Key& __x); + template + _LIBCPP_HIDE_FROM_ABI const_iterator find(const _Key& __x) const; + + typedef __hash_node_destructor<__node_allocator> _Dp; + typedef unique_ptr<__node, _Dp> __node_holder; + + _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p); + _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last); + template + _LIBCPP_HIDE_FROM_ABI size_type __erase_unique(const _Key& __k); + template + _LIBCPP_HIDE_FROM_ABI size_type __erase_multi(const _Key& __k); + _LIBCPP_HIDE_FROM_ABI __node_holder remove(const_iterator __p) _NOEXCEPT; + + template + _LIBCPP_INLINE_VISIBILITY + size_type __count_unique(const _Key& __k) const; + template + _LIBCPP_HIDE_FROM_ABI size_type __count_multi(const _Key& __k) const; + + template + _LIBCPP_HIDE_FROM_ABI pair + __equal_range_unique(const _Key& __k); + template + _LIBCPP_HIDE_FROM_ABI pair + __equal_range_unique(const _Key& __k) const; + + template + _LIBCPP_HIDE_FROM_ABI pair + __equal_range_multi(const _Key& __k); + template + _LIBCPP_HIDE_FROM_ABI pair + __equal_range_multi(const _Key& __k) const; + + _LIBCPP_HIDE_FROM_ABI void swap(__hash_table& __u) +#if _LIBCPP_STD_VER <= 11 + _NOEXCEPT_( + __is_nothrow_swappable::value && __is_nothrow_swappable::value + && (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value + || __is_nothrow_swappable<__pointer_allocator>::value) + && (!__node_traits::propagate_on_container_swap::value + || __is_nothrow_swappable<__node_allocator>::value) + ); +#else + _NOEXCEPT_(__is_nothrow_swappable::value && __is_nothrow_swappable::value); +#endif + + _LIBCPP_INLINE_VISIBILITY + size_type max_bucket_count() const _NOEXCEPT + {return max_size(); } + _LIBCPP_HIDE_FROM_ABI size_type bucket_size(size_type __n) const; + _LIBCPP_INLINE_VISIBILITY float load_factor() const _NOEXCEPT + { + size_type __bc = bucket_count(); + return __bc != 0 ? (float)size() / __bc : 0.f; + } + _LIBCPP_INLINE_VISIBILITY void max_load_factor(float __mlf) _NOEXCEPT + { + _LIBCPP_ASSERT_UNCATEGORIZED(__mlf > 0, + "unordered container::max_load_factor(lf) called with lf <= 0"); + max_load_factor() = _VSTD::max(__mlf, load_factor()); + } + + _LIBCPP_INLINE_VISIBILITY + local_iterator + begin(size_type __n) + { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(), + "unordered container::begin(n) called with n >= bucket_count()"); + return local_iterator(__bucket_list_[__n], __n, bucket_count()); + } + + _LIBCPP_INLINE_VISIBILITY + local_iterator + end(size_type __n) + { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(), + "unordered container::end(n) called with n >= bucket_count()"); + return local_iterator(nullptr, __n, bucket_count()); + } + + _LIBCPP_INLINE_VISIBILITY + const_local_iterator + cbegin(size_type __n) const + { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(), + "unordered container::cbegin(n) called with n >= bucket_count()"); + return const_local_iterator(__bucket_list_[__n], __n, bucket_count()); + } + + _LIBCPP_INLINE_VISIBILITY + const_local_iterator + cend(size_type __n) const + { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(), + "unordered container::cend(n) called with n >= bucket_count()"); + return const_local_iterator(nullptr, __n, bucket_count()); + } + +private: + template + _LIBCPP_HIDE_FROM_ABI void __rehash(size_type __n); + template + _LIBCPP_HIDE_FROM_ABI void __do_rehash(size_type __n); + + template + _LIBCPP_HIDE_FROM_ABI __node_holder __construct_node(_Args&& ...__args); + + template + _LIBCPP_HIDE_FROM_ABI __node_holder __construct_node_hash(size_t __hash, _First&& __f, _Rest&&... __rest); + + + _LIBCPP_INLINE_VISIBILITY + void __copy_assign_alloc(const __hash_table& __u) + {__copy_assign_alloc(__u, integral_constant());} + _LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const __hash_table& __u, true_type); + _LIBCPP_INLINE_VISIBILITY + void __copy_assign_alloc(const __hash_table&, false_type) {} + + _LIBCPP_HIDE_FROM_ABI void __move_assign(__hash_table& __u, false_type); + _LIBCPP_HIDE_FROM_ABI void __move_assign(__hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable::value && + is_nothrow_move_assignable::value); + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table& __u) + _NOEXCEPT_( + !__node_traits::propagate_on_container_move_assignment::value || + (is_nothrow_move_assignable<__pointer_allocator>::value && + is_nothrow_move_assignable<__node_allocator>::value)) + {__move_assign_alloc(__u, integral_constant());} + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__pointer_allocator>::value && + is_nothrow_move_assignable<__node_allocator>::value) + { + __bucket_list_.get_deleter().__alloc() = + _VSTD::move(__u.__bucket_list_.get_deleter().__alloc()); + __node_alloc() = _VSTD::move(__u.__node_alloc()); + } + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table&, false_type) _NOEXCEPT {} + + _LIBCPP_HIDE_FROM_ABI void __deallocate_node(__next_pointer __np) _NOEXCEPT; + _LIBCPP_HIDE_FROM_ABI __next_pointer __detach() _NOEXCEPT; + + template friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template +inline +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table() + _NOEXCEPT_( + is_nothrow_default_constructible<__bucket_list>::value && + is_nothrow_default_constructible<__first_node>::value && + is_nothrow_default_constructible<__node_allocator>::value && + is_nothrow_default_constructible::value && + is_nothrow_default_constructible::value) + : __p2_(0, __default_init_tag()), + __p3_(1.0f, __default_init_tag()) +{ +} + +template +inline +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const hasher& __hf, + const key_equal& __eql) + : __bucket_list_(nullptr, __bucket_list_deleter()), + __p1_(), + __p2_(0, __hf), + __p3_(1.0f, __eql) +{ +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const hasher& __hf, + const key_equal& __eql, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__default_init_tag(), __node_allocator(__a)), + __p2_(0, __hf), + __p3_(1.0f, __eql) +{ +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__default_init_tag(), __node_allocator(__a)), + __p2_(0, __default_init_tag()), + __p3_(1.0f, __default_init_tag()) +{ +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const __hash_table& __u) + : __bucket_list_(nullptr, + __bucket_list_deleter(allocator_traits<__pointer_allocator>:: + select_on_container_copy_construction( + __u.__bucket_list_.get_deleter().__alloc()), 0)), + __p1_(__default_init_tag(), allocator_traits<__node_allocator>:: + select_on_container_copy_construction(__u.__node_alloc())), + __p2_(0, __u.hash_function()), + __p3_(__u.__p3_) +{ +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const __hash_table& __u, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__default_init_tag(), __node_allocator(__a)), + __p2_(0, __u.hash_function()), + __p3_(__u.__p3_) +{ +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(__hash_table&& __u) + _NOEXCEPT_( + is_nothrow_move_constructible<__bucket_list>::value && + is_nothrow_move_constructible<__first_node>::value && + is_nothrow_move_constructible<__node_allocator>::value && + is_nothrow_move_constructible::value && + is_nothrow_move_constructible::value) + : __bucket_list_(_VSTD::move(__u.__bucket_list_)), + __p1_(_VSTD::move(__u.__p1_)), + __p2_(_VSTD::move(__u.__p2_)), + __p3_(_VSTD::move(__u.__p3_)) +{ + if (size() > 0) + { + __bucket_list_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + __u.__p1_.first().__next_ = nullptr; + __u.size() = 0; + } +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(__hash_table&& __u, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__default_init_tag(), __node_allocator(__a)), + __p2_(0, _VSTD::move(__u.hash_function())), + __p3_(_VSTD::move(__u.__p3_)) +{ + if (__a == allocator_type(__u.__node_alloc())) + { + __bucket_list_.reset(__u.__bucket_list_.release()); + __bucket_list_.get_deleter().size() = __u.__bucket_list_.get_deleter().size(); + __u.__bucket_list_.get_deleter().size() = 0; + if (__u.size() > 0) + { + __p1_.first().__next_ = __u.__p1_.first().__next_; + __u.__p1_.first().__next_ = nullptr; + __bucket_list_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + size() = __u.size(); + __u.size() = 0; + } + } +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>::~__hash_table() +{ +#if defined(_LIBCPP_CXX03_LANG) + static_assert((is_copy_constructible::value), + "Predicate must be copy-constructible."); + static_assert((is_copy_constructible::value), + "Hasher must be copy-constructible."); +#endif + + __deallocate_node(__p1_.first().__next_); +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__copy_assign_alloc( + const __hash_table& __u, true_type) +{ + if (__node_alloc() != __u.__node_alloc()) + { + clear(); + __bucket_list_.reset(); + __bucket_list_.get_deleter().size() = 0; + } + __bucket_list_.get_deleter().__alloc() = __u.__bucket_list_.get_deleter().__alloc(); + __node_alloc() = __u.__node_alloc(); +} + +template +__hash_table<_Tp, _Hash, _Equal, _Alloc>& +__hash_table<_Tp, _Hash, _Equal, _Alloc>::operator=(const __hash_table& __u) +{ + if (this != _VSTD::addressof(__u)) + { + __copy_assign_alloc(__u); + hash_function() = __u.hash_function(); + key_eq() = __u.key_eq(); + max_load_factor() = __u.max_load_factor(); + __assign_multi(__u.begin(), __u.end()); + } + return *this; +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__deallocate_node(__next_pointer __np) + _NOEXCEPT +{ + __node_allocator& __na = __node_alloc(); + while (__np != nullptr) + { + __next_pointer __next = __np->__next_; + __node_pointer __real_np = __np->__upcast(); + __node_traits::destroy(__na, _NodeTypes::__get_ptr(__real_np->__value_)); + __node_traits::deallocate(__na, __real_np, 1); + __np = __next; + } +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_pointer +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__detach() _NOEXCEPT +{ + size_type __bc = bucket_count(); + for (size_type __i = 0; __i < __bc; ++__i) + __bucket_list_[__i] = nullptr; + size() = 0; + __next_pointer __cache = __p1_.first().__next_; + __p1_.first().__next_ = nullptr; + return __cache; +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__move_assign( + __hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable::value && + is_nothrow_move_assignable::value) +{ + clear(); + __bucket_list_.reset(__u.__bucket_list_.release()); + __bucket_list_.get_deleter().size() = __u.__bucket_list_.get_deleter().size(); + __u.__bucket_list_.get_deleter().size() = 0; + __move_assign_alloc(__u); + size() = __u.size(); + hash_function() = _VSTD::move(__u.hash_function()); + max_load_factor() = __u.max_load_factor(); + key_eq() = _VSTD::move(__u.key_eq()); + __p1_.first().__next_ = __u.__p1_.first().__next_; + if (size() > 0) + { + __bucket_list_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + __u.__p1_.first().__next_ = nullptr; + __u.size() = 0; + } +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__move_assign( + __hash_table& __u, false_type) +{ + if (__node_alloc() == __u.__node_alloc()) + __move_assign(__u, true_type()); + else + { + hash_function() = _VSTD::move(__u.hash_function()); + key_eq() = _VSTD::move(__u.key_eq()); + max_load_factor() = __u.max_load_factor(); + if (bucket_count() != 0) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + const_iterator __i = __u.begin(); + while (__cache != nullptr && __u.size() != 0) + { + __cache->__upcast()->__value_ = + _VSTD::move(__u.remove(__i++)->__value_); + __next_pointer __next = __cache->__next_; + __node_insert_multi(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + __deallocate_node(__cache); + } + const_iterator __i = __u.begin(); + while (__u.size() != 0) + { + __node_holder __h = __construct_node(_NodeTypes::__move(__u.remove(__i++)->__value_)); + __node_insert_multi(__h.get()); + __h.release(); + } + } +} + +template +inline +__hash_table<_Tp, _Hash, _Equal, _Alloc>& +__hash_table<_Tp, _Hash, _Equal, _Alloc>::operator=(__hash_table&& __u) + _NOEXCEPT_( + __node_traits::propagate_on_container_move_assignment::value && + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable::value && + is_nothrow_move_assignable::value) +{ + __move_assign(__u, integral_constant()); + return *this; +} + +template +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__assign_unique(_InputIterator __first, + _InputIterator __last) +{ + typedef iterator_traits<_InputIterator> _ITraits; + typedef typename _ITraits::value_type _ItValueType; + static_assert((is_same<_ItValueType, __container_value_type>::value), + "__assign_unique may only be called with the containers value type"); + + if (bucket_count() != 0) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__upcast()->__value_ = *__first; + __next_pointer __next = __cache->__next_; + __node_insert_unique(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + __deallocate_node(__cache); + } + for (; __first != __last; ++__first) + __insert_unique(*__first); +} + +template +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__assign_multi(_InputIterator __first, + _InputIterator __last) +{ + typedef iterator_traits<_InputIterator> _ITraits; + typedef typename _ITraits::value_type _ItValueType; + static_assert((is_same<_ItValueType, __container_value_type>::value || + is_same<_ItValueType, __node_value_type>::value), + "__assign_multi may only be called with the containers value type" + " or the nodes value type"); + if (bucket_count() != 0) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__upcast()->__value_ = *__first; + __next_pointer __next = __cache->__next_; + __node_insert_multi(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + __deallocate_node(__cache); + } + for (; __first != __last; ++__first) + __insert_multi(_NodeTypes::__get_value(*__first)); +} + +template +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() _NOEXCEPT +{ + return iterator(__p1_.first().__next_); +} + +template +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() _NOEXCEPT +{ + return iterator(nullptr); +} + +template +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() const _NOEXCEPT +{ + return const_iterator(__p1_.first().__next_); +} + +template +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() const _NOEXCEPT +{ + return const_iterator(nullptr); +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::clear() _NOEXCEPT +{ + if (size() > 0) + { + __deallocate_node(__p1_.first().__next_); + __p1_.first().__next_ = nullptr; + size_type __bc = bucket_count(); + for (size_type __i = 0; __i < __bc; ++__i) + __bucket_list_[__i] = nullptr; + size() = 0; + } +} + + +// Prepare the container for an insertion of the value __value with the hash +// __hash. This does a lookup into the container to see if __value is already +// present, and performs a rehash if necessary. Returns a pointer to the +// existing element if it exists, otherwise nullptr. +// +// Note that this function does forward exceptions if key_eq() throws, and never +// mutates __value or actually inserts into the map. +template +_LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_pointer +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique_prepare( + size_t __hash, value_type& __value) +{ + size_type __bc = bucket_count(); + + if (__bc != 0) + { + size_t __chash = std::__constrain_hash(__hash, __bc); + __next_pointer __ndptr = __bucket_list_[__chash]; + if (__ndptr != nullptr) + { + for (__ndptr = __ndptr->__next_; __ndptr != nullptr && + (__ndptr->__hash() == __hash || + std::__constrain_hash(__ndptr->__hash(), __bc) == __chash); + __ndptr = __ndptr->__next_) + { + if ((__ndptr->__hash() == __hash) && + key_eq()(__ndptr->__upcast()->__value_, __value)) + return __ndptr; + } + } + } + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + __rehash_unique(_VSTD::max(2 * __bc + !std::__is_hash_power2(__bc), + size_type(std::ceil(float(size() + 1) / max_load_factor())))); + } + return nullptr; +} + +// Insert the node __nd into the container by pushing it into the right bucket, +// and updating size(). Assumes that __nd->__hash is up-to-date, and that +// rehashing has already occurred and that no element with the same key exists +// in the map. +template +_LIBCPP_INLINE_VISIBILITY +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique_perform( + __node_pointer __nd) _NOEXCEPT +{ + size_type __bc = bucket_count(); + size_t __chash = std::__constrain_hash(__nd->__hash(), __bc); + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn =__p1_.first().__ptr(); + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__nd->__next_ != nullptr) + __bucket_list_[std::__constrain_hash(__nd->__next_->__hash(), __bc)] = __nd->__ptr(); + } + else + { + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd->__ptr(); + } + ++size(); +} + +template +pair::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique(__node_pointer __nd) +{ + __nd->__hash_ = hash_function()(__nd->__value_); + __next_pointer __existing_node = + __node_insert_unique_prepare(__nd->__hash(), __nd->__value_); + + // Insert the node, unless it already exists in the container. + bool __inserted = false; + if (__existing_node == nullptr) + { + __node_insert_unique_perform(__nd); + __existing_node = __nd->__ptr(); + __inserted = true; + } + return pair(iterator(__existing_node), __inserted); +} + +// Prepare the container for an insertion of the value __cp_val with the hash +// __cp_hash. This does a lookup into the container to see if __cp_value is +// already present, and performs a rehash if necessary. Returns a pointer to the +// last occurrence of __cp_val in the map. +// +// Note that this function does forward exceptions if key_eq() throws, and never +// mutates __value or actually inserts into the map. +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_pointer +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi_prepare( + size_t __cp_hash, value_type& __cp_val) +{ + size_type __bc = bucket_count(); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + __rehash_multi(_VSTD::max(2 * __bc + !std::__is_hash_power2(__bc), + size_type(std::ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = std::__constrain_hash(__cp_hash, __bc); + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn != nullptr) + { + for (bool __found = false; __pn->__next_ != nullptr && + std::__constrain_hash(__pn->__next_->__hash(), __bc) == __chash; + __pn = __pn->__next_) + { + // __found key_eq() action + // false false loop + // true true loop + // false true set __found to true + // true false break + if (__found != (__pn->__next_->__hash() == __cp_hash && + key_eq()(__pn->__next_->__upcast()->__value_, __cp_val))) + { + if (!__found) + __found = true; + else + break; + } + } + } + return __pn; +} + +// Insert the node __cp into the container after __pn (which is the last node in +// the bucket that compares equal to __cp). Rehashing, and checking for +// uniqueness has already been performed (in __node_insert_multi_prepare), so +// all we need to do is update the bucket and size(). Assumes that __cp->__hash +// is up-to-date. +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi_perform( + __node_pointer __cp, __next_pointer __pn) _NOEXCEPT +{ + size_type __bc = bucket_count(); + size_t __chash = std::__constrain_hash(__cp->__hash_, __bc); + if (__pn == nullptr) + { + __pn =__p1_.first().__ptr(); + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__cp->__next_ != nullptr) + __bucket_list_[std::__constrain_hash(__cp->__next_->__hash(), __bc)] + = __cp->__ptr(); + } + else + { + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp->__ptr(); + if (__cp->__next_ != nullptr) + { + size_t __nhash = std::__constrain_hash(__cp->__next_->__hash(), __bc); + if (__nhash != __chash) + __bucket_list_[__nhash] = __cp->__ptr(); + } + } + ++size(); +} + + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi(__node_pointer __cp) +{ + __cp->__hash_ = hash_function()(__cp->__value_); + __next_pointer __pn = __node_insert_multi_prepare(__cp->__hash(), __cp->__value_); + __node_insert_multi_perform(__cp, __pn); + + return iterator(__cp->__ptr()); +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi( + const_iterator __p, __node_pointer __cp) +{ + if (__p != end() && key_eq()(*__p, __cp->__value_)) + { + __next_pointer __np = __p.__node_; + __cp->__hash_ = __np->__hash(); + size_type __bc = bucket_count(); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + __rehash_multi(_VSTD::max(2 * __bc + !std::__is_hash_power2(__bc), + size_type(std::ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = std::__constrain_hash(__cp->__hash_, __bc); + __next_pointer __pp = __bucket_list_[__chash]; + while (__pp->__next_ != __np) + __pp = __pp->__next_; + __cp->__next_ = __np; + __pp->__next_ = static_cast<__next_pointer>(__cp); + ++size(); + return iterator(static_cast<__next_pointer>(__cp)); + } + return __node_insert_multi(__cp); +} + + + +template +template +pair::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_unique_key_args(_Key const& __k, _Args&&... __args) +{ + + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + bool __inserted = false; + __next_pointer __nd; + size_t __chash; + if (__bc != 0) + { + __chash = std::__constrain_hash(__hash, __bc); + __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__nd->__hash() == __hash || std::__constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if ((__nd->__hash() == __hash) && + key_eq()(__nd->__upcast()->__value_, __k)) + goto __done; + } + } + } + { + __node_holder __h = __construct_node_hash(__hash, _VSTD::forward<_Args>(__args)...); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + __rehash_unique(_VSTD::max(2 * __bc + !std::__is_hash_power2(__bc), + size_type(std::ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + __chash = std::__constrain_hash(__hash, __bc); + } + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn = __p1_.first().__ptr(); + __h->__next_ = __pn->__next_; + __pn->__next_ = __h.get()->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__h->__next_ != nullptr) + __bucket_list_[std::__constrain_hash(__h->__next_->__hash(), __bc)] + = __h.get()->__ptr(); + } + else + { + __h->__next_ = __pn->__next_; + __pn->__next_ = static_cast<__next_pointer>(__h.get()); + } + __nd = static_cast<__next_pointer>(__h.release()); + // increment size + ++size(); + __inserted = true; + } +__done: + return pair(iterator(__nd), __inserted); +} + +template +template +pair::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_unique_impl(_Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + pair __r = __node_insert_unique(__h.get()); + if (__r.second) + __h.release(); + return __r; +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_multi(_Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + iterator __r = __node_insert_multi(__h.get()); + __h.release(); + return __r; +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_hint_multi( + const_iterator __p, _Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#if _LIBCPP_STD_VER >= 17 +template +template +_LIBCPP_INLINE_VISIBILITY +_InsertReturnType +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_unique( + _NodeHandle&& __nh) +{ + if (__nh.empty()) + return _InsertReturnType{end(), false, _NodeHandle()}; + pair __result = __node_insert_unique(__nh.__ptr_); + if (__result.second) + __nh.__release_ptr(); + return _InsertReturnType{__result.first, __result.second, _VSTD::move(__nh)}; +} + +template +template +_LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_unique( + const_iterator, _NodeHandle&& __nh) +{ + if (__nh.empty()) + return end(); + pair __result = __node_insert_unique(__nh.__ptr_); + if (__result.second) + __nh.__release_ptr(); + return __result.first; +} + +template +template +_LIBCPP_INLINE_VISIBILITY +_NodeHandle +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_extract( + key_type const& __key) +{ + iterator __i = find(__key); + if (__i == end()) + return _NodeHandle(); + return __node_handle_extract<_NodeHandle>(__i); +} + +template +template +_LIBCPP_INLINE_VISIBILITY +_NodeHandle +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_extract( + const_iterator __p) +{ + allocator_type __alloc(__node_alloc()); + return _NodeHandle(remove(__p).release(), __alloc); +} + +template +template +_LIBCPP_INLINE_VISIBILITY +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_merge_unique( + _Table& __source) +{ + static_assert(is_same<__node, typename _Table::__node>::value, ""); + + for (typename _Table::iterator __it = __source.begin(); + __it != __source.end();) + { + __node_pointer __src_ptr = __it.__node_->__upcast(); + size_t __hash = hash_function()(__src_ptr->__value_); + __next_pointer __existing_node = + __node_insert_unique_prepare(__hash, __src_ptr->__value_); + auto __prev_iter = __it++; + if (__existing_node == nullptr) + { + (void)__source.remove(__prev_iter).release(); + __src_ptr->__hash_ = __hash; + __node_insert_unique_perform(__src_ptr); + } + } +} + +template +template +_LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_multi( + _NodeHandle&& __nh) +{ + if (__nh.empty()) + return end(); + iterator __result = __node_insert_multi(__nh.__ptr_); + __nh.__release_ptr(); + return __result; +} + +template +template +_LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_multi( + const_iterator __hint, _NodeHandle&& __nh) +{ + if (__nh.empty()) + return end(); + iterator __result = __node_insert_multi(__hint, __nh.__ptr_); + __nh.__release_ptr(); + return __result; +} + +template +template +_LIBCPP_INLINE_VISIBILITY +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_merge_multi( + _Table& __source) +{ + static_assert(is_same::value, ""); + + for (typename _Table::iterator __it = __source.begin(); + __it != __source.end();) + { + __node_pointer __src_ptr = __it.__node_->__upcast(); + size_t __src_hash = hash_function()(__src_ptr->__value_); + __next_pointer __pn = + __node_insert_multi_prepare(__src_hash, __src_ptr->__value_); + (void)__source.remove(__it++).release(); + __src_ptr->__hash_ = __src_hash; + __node_insert_multi_perform(__src_ptr, __pn); + } +} +#endif // _LIBCPP_STD_VER >= 17 + +template +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__rehash(size_type __n) +_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK +{ + if (__n == 1) + __n = 2; + else if (__n & (__n - 1)) + __n = std::__next_prime(__n); + size_type __bc = bucket_count(); + if (__n > __bc) + __do_rehash<_UniqueKeys>(__n); + else if (__n < __bc) + { + __n = _VSTD::max + ( + __n, + std::__is_hash_power2(__bc) ? std::__next_hash_pow2(size_t(std::ceil(float(size()) / max_load_factor()))) : + std::__next_prime(size_t(std::ceil(float(size()) / max_load_factor()))) + ); + if (__n < __bc) + __do_rehash<_UniqueKeys>(__n); + } +} + +template +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__do_rehash(size_type __nbc) +{ + __pointer_allocator& __npa = __bucket_list_.get_deleter().__alloc(); + __bucket_list_.reset(__nbc > 0 ? + __pointer_alloc_traits::allocate(__npa, __nbc) : nullptr); + __bucket_list_.get_deleter().size() = __nbc; + if (__nbc > 0) + { + for (size_type __i = 0; __i < __nbc; ++__i) + __bucket_list_[__i] = nullptr; + __next_pointer __pp = __p1_.first().__ptr(); + __next_pointer __cp = __pp->__next_; + if (__cp != nullptr) + { + size_type __chash = std::__constrain_hash(__cp->__hash(), __nbc); + __bucket_list_[__chash] = __pp; + size_type __phash = __chash; + for (__pp = __cp, void(), __cp = __cp->__next_; __cp != nullptr; + __cp = __pp->__next_) + { + __chash = std::__constrain_hash(__cp->__hash(), __nbc); + if (__chash == __phash) + __pp = __cp; + else + { + if (__bucket_list_[__chash] == nullptr) + { + __bucket_list_[__chash] = __pp; + __pp = __cp; + __phash = __chash; + } + else + { + __next_pointer __np = __cp; + if _LIBCPP_CONSTEXPR_SINCE_CXX17 (!_UniqueKeys) + { + for (; __np->__next_ != nullptr && + key_eq()(__cp->__upcast()->__value_, + __np->__next_->__upcast()->__value_); + __np = __np->__next_) + ; + } + __pp->__next_ = __np->__next_; + __np->__next_ = __bucket_list_[__chash]->__next_; + __bucket_list_[__chash]->__next_ = __cp; + + } + } + } + } + } +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::find(const _Key& __k) +{ + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + if (__bc != 0) + { + size_t __chash = std::__constrain_hash(__hash, __bc); + __next_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__nd->__hash() == __hash + || std::__constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if ((__nd->__hash() == __hash) + && key_eq()(__nd->__upcast()->__value_, __k)) + return iterator(__nd); + } + } + } + return end(); +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::find(const _Key& __k) const +{ + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + if (__bc != 0) + { + size_t __chash = std::__constrain_hash(__hash, __bc); + __next_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__hash == __nd->__hash() + || std::__constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if ((__nd->__hash() == __hash) + && key_eq()(__nd->__upcast()->__value_, __k)) + return const_iterator(__nd); + } + } + + } + return end(); +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node(_Args&& ...__args) +{ + static_assert(!__is_hash_value_type<_Args...>::value, + "Construct cannot be called with a hash value type"); + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), _VSTD::forward<_Args>(__args)...); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = hash_function()(__h->__value_); + __h->__next_ = nullptr; + return __h; +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node_hash( + size_t __hash, _First&& __f, _Rest&& ...__rest) +{ + static_assert(!__is_hash_value_type<_First, _Rest...>::value, + "Construct cannot be called with a hash value type"); + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), + _VSTD::forward<_First>(__f), + _VSTD::forward<_Rest>(__rest)...); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = __hash; + __h->__next_ = nullptr; + return __h; +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::erase(const_iterator __p) +{ + __next_pointer __np = __p.__node_; + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p != end(), + "unordered container::erase(iterator) called with a non-dereferenceable iterator"); + iterator __r(__np); + ++__r; + remove(__p); + return __r; +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::erase(const_iterator __first, + const_iterator __last) +{ + for (const_iterator __p = __first; __first != __last; __p = __first) + { + ++__first; + erase(__p); + } + __next_pointer __np = __last.__node_; + return iterator (__np); +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__erase_unique(const _Key& __k) +{ + iterator __i = find(__k); + if (__i == end()) + return 0; + erase(__i); + return 1; +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__erase_multi(const _Key& __k) +{ + size_type __r = 0; + iterator __i = find(__k); + if (__i != end()) + { + iterator __e = end(); + do + { + erase(__i++); + ++__r; + } while (__i != __e && key_eq()(*__i, __k)); + } + return __r; +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::remove(const_iterator __p) _NOEXCEPT +{ + // current node + __next_pointer __cn = __p.__node_; + size_type __bc = bucket_count(); + size_t __chash = std::__constrain_hash(__cn->__hash(), __bc); + // find previous node + __next_pointer __pn = __bucket_list_[__chash]; + for (; __pn->__next_ != __cn; __pn = __pn->__next_) + ; + // Fix up __bucket_list_ + // if __pn is not in same bucket (before begin is not in same bucket) && + // if __cn->__next_ is not in same bucket (nullptr is not in same bucket) + if (__pn == __p1_.first().__ptr() + || std::__constrain_hash(__pn->__hash(), __bc) != __chash) + { + if (__cn->__next_ == nullptr + || std::__constrain_hash(__cn->__next_->__hash(), __bc) != __chash) + __bucket_list_[__chash] = nullptr; + } + // if __cn->__next_ is not in same bucket (nullptr is in same bucket) + if (__cn->__next_ != nullptr) + { + size_t __nhash = std::__constrain_hash(__cn->__next_->__hash(), __bc); + if (__nhash != __chash) + __bucket_list_[__nhash] = __pn; + } + // remove __cn + __pn->__next_ = __cn->__next_; + __cn->__next_ = nullptr; + --size(); + return __node_holder(__cn->__upcast(), _Dp(__node_alloc(), true)); +} + +template +template +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__count_unique(const _Key& __k) const +{ + return static_cast(find(__k) != end()); +} + +template +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__count_multi(const _Key& __k) const +{ + size_type __r = 0; + const_iterator __i = find(__k); + if (__i != end()) + { + const_iterator __e = end(); + do + { + ++__i; + ++__r; + } while (__i != __e && key_eq()(*__i, __k)); + } + return __r; +} + +template +template +pair::iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_unique( + const _Key& __k) +{ + iterator __i = find(__k); + iterator __j = __i; + if (__i != end()) + ++__j; + return pair(__i, __j); +} + +template +template +pair::const_iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_unique( + const _Key& __k) const +{ + const_iterator __i = find(__k); + const_iterator __j = __i; + if (__i != end()) + ++__j; + return pair(__i, __j); +} + +template +template +pair::iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_multi( + const _Key& __k) +{ + iterator __i = find(__k); + iterator __j = __i; + if (__i != end()) + { + iterator __e = end(); + do + { + ++__j; + } while (__j != __e && key_eq()(*__j, __k)); + } + return pair(__i, __j); +} + +template +template +pair::const_iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_multi( + const _Key& __k) const +{ + const_iterator __i = find(__k); + const_iterator __j = __i; + if (__i != end()) + { + const_iterator __e = end(); + do + { + ++__j; + } while (__j != __e && key_eq()(*__j, __k)); + } + return pair(__i, __j); +} + +template +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::swap(__hash_table& __u) +#if _LIBCPP_STD_VER <= 11 + _NOEXCEPT_( + __is_nothrow_swappable::value && __is_nothrow_swappable::value + && (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value + || __is_nothrow_swappable<__pointer_allocator>::value) + && (!__node_traits::propagate_on_container_swap::value + || __is_nothrow_swappable<__node_allocator>::value) + ) +#else + _NOEXCEPT_(__is_nothrow_swappable::value && __is_nothrow_swappable::value) +#endif +{ + _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__node_traits::propagate_on_container_swap::value || + this->__node_alloc() == __u.__node_alloc(), + "unordered container::swap: Either propagate_on_container_swap " + "must be true or the allocators must compare equal"); + { + __node_pointer_pointer __npp = __bucket_list_.release(); + __bucket_list_.reset(__u.__bucket_list_.release()); + __u.__bucket_list_.reset(__npp); + } + _VSTD::swap(__bucket_list_.get_deleter().size(), __u.__bucket_list_.get_deleter().size()); + _VSTD::__swap_allocator(__bucket_list_.get_deleter().__alloc(), + __u.__bucket_list_.get_deleter().__alloc()); + _VSTD::__swap_allocator(__node_alloc(), __u.__node_alloc()); + _VSTD::swap(__p1_.first().__next_, __u.__p1_.first().__next_); + __p2_.swap(__u.__p2_); + __p3_.swap(__u.__p3_); + if (size() > 0) + __bucket_list_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + if (__u.size() > 0) + __u.__bucket_list_[std::__constrain_hash(__u.__p1_.first().__next_->__hash(), __u.bucket_count())] = + __u.__p1_.first().__ptr(); +} + +template +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::bucket_size(size_type __n) const +{ + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(), + "unordered container::bucket_size(n) called with n >= bucket_count()"); + __next_pointer __np = __bucket_list_[__n]; + size_type __bc = bucket_count(); + size_type __r = 0; + if (__np != nullptr) + { + for (__np = __np->__next_; __np != nullptr && + std::__constrain_hash(__np->__hash(), __bc) == __n; + __np = __np->__next_, (void) ++__r) + ; + } + return __r; +} + +template +inline _LIBCPP_INLINE_VISIBILITY +void +swap(__hash_table<_Tp, _Hash, _Equal, _Alloc>& __x, + __hash_table<_Tp, _Hash, _Equal, _Alloc>& __y) + _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) +{ + __x.swap(__y); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___HASH_TABLE diff --git a/lib/libcxx/include/__ios/fpos.h b/lib/libcxx/include/__ios/fpos.h new file mode 100644 index 0000000..87f0135 --- /dev/null +++ b/lib/libcxx/include/__ios/fpos.h @@ -0,0 +1,79 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___IOS_FPOS_H +#define _LIBCPP___IOS_FPOS_H + +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class _LIBCPP_TEMPLATE_VIS fpos { +private: + _StateT __st_; + streamoff __off_; + +public: + _LIBCPP_HIDE_FROM_ABI fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {} + + _LIBCPP_HIDE_FROM_ABI operator streamoff() const { return __off_; } + + _LIBCPP_HIDE_FROM_ABI _StateT state() const { return __st_; } + _LIBCPP_HIDE_FROM_ABI void state(_StateT __st) { __st_ = __st; } + + _LIBCPP_HIDE_FROM_ABI fpos& operator+=(streamoff __off) { + __off_ += __off; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI fpos operator+(streamoff __off) const { + fpos __t(*this); + __t += __off; + return __t; + } + + _LIBCPP_HIDE_FROM_ABI fpos& operator-=(streamoff __off) { + __off_ -= __off; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI fpos operator-(streamoff __off) const { + fpos __t(*this); + __t -= __off; + return __t; + } +}; + +template +inline _LIBCPP_HIDE_FROM_ABI +streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { + return streamoff(__x) - streamoff(__y); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { + return streamoff(__x) == streamoff(__y); +} + +template +inline _LIBCPP_HIDE_FROM_ABI +bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { + return streamoff(__x) != streamoff(__y); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___IOS_FPOS_H diff --git a/lib/libcxx/include/__iterator/access.h b/lib/libcxx/include/__iterator/access.h new file mode 100644 index 0000000..d7bcb33 --- /dev/null +++ b/lib/libcxx/include/__iterator/access.h @@ -0,0 +1,129 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ACCESS_H +#define _LIBCPP___ITERATOR_ACCESS_H + +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp* +begin(_Tp (&__array)[_Np]) +{ + return __array; +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +_Tp* +end(_Tp (&__array)[_Np]) +{ + return __array + _Np; +} + +#if !defined(_LIBCPP_CXX03_LANG) + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto +begin(_Cp& __c) -> decltype(__c.begin()) +{ + return __c.begin(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto +begin(const _Cp& __c) -> decltype(__c.begin()) +{ + return __c.begin(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto +end(_Cp& __c) -> decltype(__c.end()) +{ + return __c.end(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto +end(const _Cp& __c) -> decltype(__c.end()) +{ + return __c.end(); +} + +#if _LIBCPP_STD_VER >= 14 + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c)) +{ + return _VSTD::begin(__c); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 +auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c)) +{ + return _VSTD::end(__c); +} + +#endif + + +#else // defined(_LIBCPP_CXX03_LANG) + +template +_LIBCPP_INLINE_VISIBILITY +typename _Cp::iterator +begin(_Cp& __c) +{ + return __c.begin(); +} + +template +_LIBCPP_INLINE_VISIBILITY +typename _Cp::const_iterator +begin(const _Cp& __c) +{ + return __c.begin(); +} + +template +_LIBCPP_INLINE_VISIBILITY +typename _Cp::iterator +end(_Cp& __c) +{ + return __c.end(); +} + +template +_LIBCPP_INLINE_VISIBILITY +typename _Cp::const_iterator +end(const _Cp& __c) +{ + return __c.end(); +} + +#endif // !defined(_LIBCPP_CXX03_LANG) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_ACCESS_H diff --git a/lib/libcxx/include/__iterator/advance.h b/lib/libcxx/include/__iterator/advance.h new file mode 100644 index 0000000..04cbe07 --- /dev/null +++ b/lib/libcxx/include/__iterator/advance.h @@ -0,0 +1,207 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ADVANCE_H +#define _LIBCPP___ITERATOR_ADVANCE_H + +#include <__assert> +#include <__concepts/assignable.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_integral.h> +#include <__utility/convert_to_integral.h> +#include <__utility/declval.h> +#include <__utility/move.h> +#include <__utility/unreachable.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +void __advance(_InputIter& __i, typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag) { + for (; __n > 0; --__n) + ++__i; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +void __advance(_BiDirIter& __i, typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag) { + if (__n >= 0) + for (; __n > 0; --__n) + ++__i; + else + for (; __n < 0; ++__n) + --__i; +} + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +void __advance(_RandIter& __i, typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag) { + __i += __n; +} + +template < + class _InputIter, class _Distance, + class _IntegralDistance = decltype(_VSTD::__convert_to_integral(std::declval<_Distance>())), + class = __enable_if_t::value> > +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +void advance(_InputIter& __i, _Distance __orig_n) { + typedef typename iterator_traits<_InputIter>::difference_type _Difference; + _Difference __n = static_cast<_Difference>(_VSTD::__convert_to_integral(__orig_n)); + _LIBCPP_ASSERT_UNCATEGORIZED(__n >= 0 || __has_bidirectional_iterator_category<_InputIter>::value, + "Attempt to advance(it, n) with negative n on a non-bidirectional iterator"); + _VSTD::__advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category()); +} + +#if _LIBCPP_STD_VER >= 20 + +// [range.iter.op.advance] + +namespace ranges { +namespace __advance { + +struct __fn { +private: + template + _LIBCPP_HIDE_FROM_ABI + static constexpr void __advance_forward(_Ip& __i, iter_difference_t<_Ip> __n) { + while (__n > 0) { + --__n; + ++__i; + } + } + + template + _LIBCPP_HIDE_FROM_ABI + static constexpr void __advance_backward(_Ip& __i, iter_difference_t<_Ip> __n) { + while (__n < 0) { + ++__n; + --__i; + } + } + +public: + // Preconditions: If `I` does not model `bidirectional_iterator`, `n` is not negative. + template + _LIBCPP_HIDE_FROM_ABI + constexpr void operator()(_Ip& __i, iter_difference_t<_Ip> __n) const { + _LIBCPP_ASSERT_UNCATEGORIZED(__n >= 0 || bidirectional_iterator<_Ip>, + "If `n < 0`, then `bidirectional_iterator` must be true."); + + // If `I` models `random_access_iterator`, equivalent to `i += n`. + if constexpr (random_access_iterator<_Ip>) { + __i += __n; + return; + } else if constexpr (bidirectional_iterator<_Ip>) { + // Otherwise, if `n` is non-negative, increments `i` by `n`. + __advance_forward(__i, __n); + // Otherwise, decrements `i` by `-n`. + __advance_backward(__i, __n); + return; + } else { + // Otherwise, if `n` is non-negative, increments `i` by `n`. + __advance_forward(__i, __n); + return; + } + } + + // Preconditions: Either `assignable_from || sized_sentinel_for` is modeled, or [i, bound_sentinel) denotes a range. + template _Sp> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_Ip& __i, _Sp __bound_sentinel) const { + // If `I` and `S` model `assignable_from`, equivalent to `i = std::move(bound_sentinel)`. + if constexpr (assignable_from<_Ip&, _Sp>) { + __i = _VSTD::move(__bound_sentinel); + } + // Otherwise, if `S` and `I` model `sized_sentinel_for`, equivalent to `ranges::advance(i, bound_sentinel - i)`. + else if constexpr (sized_sentinel_for<_Sp, _Ip>) { + (*this)(__i, __bound_sentinel - __i); + } + // Otherwise, while `bool(i != bound_sentinel)` is true, increments `i`. + else { + while (__i != __bound_sentinel) { + ++__i; + } + } + } + + // Preconditions: + // * If `n > 0`, [i, bound_sentinel) denotes a range. + // * If `n == 0`, [i, bound_sentinel) or [bound_sentinel, i) denotes a range. + // * If `n < 0`, [bound_sentinel, i) denotes a range, `I` models `bidirectional_iterator`, and `I` and `S` model `same_as`. + // Returns: `n - M`, where `M` is the difference between the ending and starting position. + template _Sp> + _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Ip> operator()(_Ip& __i, iter_difference_t<_Ip> __n, + _Sp __bound_sentinel) const { + _LIBCPP_ASSERT_UNCATEGORIZED((__n >= 0) || (bidirectional_iterator<_Ip> && same_as<_Ip, _Sp>), + "If `n < 0`, then `bidirectional_iterator && same_as` must be true."); + // If `S` and `I` model `sized_sentinel_for`: + if constexpr (sized_sentinel_for<_Sp, _Ip>) { + // If |n| >= |bound_sentinel - i|, equivalent to `ranges::advance(i, bound_sentinel)`. + // __magnitude_geq(a, b) returns |a| >= |b|, assuming they have the same sign. + auto __magnitude_geq = [](auto __a, auto __b) { + return __a == 0 ? __b == 0 : + __a > 0 ? __a >= __b : + __a <= __b; + }; + if (const auto __m = __bound_sentinel - __i; __magnitude_geq(__n, __m)) { + (*this)(__i, __bound_sentinel); + return __n - __m; + } + + // Otherwise, equivalent to `ranges::advance(i, n)`. + (*this)(__i, __n); + return 0; + } else { + // Otherwise, if `n` is non-negative, while `bool(i != bound_sentinel)` is true, increments `i` but at + // most `n` times. + while (__i != __bound_sentinel && __n > 0) { + ++__i; + --__n; + } + + // Otherwise, while `bool(i != bound_sentinel)` is true, decrements `i` but at most `-n` times. + if constexpr (bidirectional_iterator<_Ip> && same_as<_Ip, _Sp>) { + while (__i != __bound_sentinel && __n < 0) { + --__i; + ++__n; + } + } + return __n; + } + + __libcpp_unreachable(); + } +}; + +} // namespace __advance + +inline namespace __cpo { + inline constexpr auto advance = __advance::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_ADVANCE_H diff --git a/lib/libcxx/include/__iterator/back_insert_iterator.h b/lib/libcxx/include/__iterator/back_insert_iterator.h new file mode 100644 index 0000000..a0083da --- /dev/null +++ b/lib/libcxx/include/__iterator/back_insert_iterator.h @@ -0,0 +1,78 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_BACK_INSERT_ITERATOR_H +#define _LIBCPP___ITERATOR_BACK_INSERT_ITERATOR_H + +#include <__config> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS back_insert_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +protected: + _Container* container; +public: + typedef output_iterator_tag iterator_category; + typedef void value_type; +#if _LIBCPP_STD_VER >= 20 + typedef ptrdiff_t difference_type; +#else + typedef void difference_type; +#endif + typedef void pointer; + typedef void reference; + typedef _Container container_type; + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 back_insert_iterator& operator=(const typename _Container::value_type& __value) + {container->push_back(__value); return *this;} +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 back_insert_iterator& operator=(typename _Container::value_type&& __value) + {container->push_back(_VSTD::move(__value)); return *this;} +#endif // _LIBCPP_CXX03_LANG + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 back_insert_iterator& operator*() {return *this;} + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 back_insert_iterator& operator++() {return *this;} + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 back_insert_iterator operator++(int) {return *this;} + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Container* __get_container() const { return container; } +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(back_insert_iterator); + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 +back_insert_iterator<_Container> +back_inserter(_Container& __x) +{ + return back_insert_iterator<_Container>(__x); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_BACK_INSERT_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/bounded_iter.h b/lib/libcxx/include/__iterator/bounded_iter.h new file mode 100644 index 0000000..2a66764 --- /dev/null +++ b/lib/libcxx/include/__iterator/bounded_iter.h @@ -0,0 +1,236 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_BOUNDED_ITER_H +#define _LIBCPP___ITERATOR_BOUNDED_ITER_H + +#include <__assert> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__memory/pointer_traits.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/is_convertible.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +// Iterator wrapper that carries the valid range it is allowed to access. +// +// This is a simple iterator wrapper for contiguous iterators that points +// within a [begin, end) range and carries these bounds with it. The iterator +// ensures that it is pointing within that [begin, end) range when it is +// dereferenced. +// +// Arithmetic operations are allowed and the bounds of the resulting iterator +// are not checked. Hence, it is possible to create an iterator pointing outside +// its range, but it is not possible to dereference it. +template ::value > > +struct __bounded_iter { + using value_type = typename iterator_traits<_Iterator>::value_type; + using difference_type = typename iterator_traits<_Iterator>::difference_type; + using pointer = typename iterator_traits<_Iterator>::pointer; + using reference = typename iterator_traits<_Iterator>::reference; + using iterator_category = typename iterator_traits<_Iterator>::iterator_category; +#if _LIBCPP_STD_VER >= 20 + using iterator_concept = contiguous_iterator_tag; +#endif + + // Create a singular iterator. + // + // Such an iterator does not point to any object and is conceptually out of bounds, so it is + // not dereferenceable. Observing operations like comparison and assignment are valid. + _LIBCPP_HIDE_FROM_ABI __bounded_iter() = default; + + _LIBCPP_HIDE_FROM_ABI __bounded_iter(__bounded_iter const&) = default; + _LIBCPP_HIDE_FROM_ABI __bounded_iter(__bounded_iter&&) = default; + + template ::value > > + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bounded_iter(__bounded_iter<_OtherIterator> const& __other) _NOEXCEPT + : __current_(__other.__current_), + __begin_(__other.__begin_), + __end_(__other.__end_) {} + + // Assign a bounded iterator to another one, rebinding the bounds of the iterator as well. + _LIBCPP_HIDE_FROM_ABI __bounded_iter& operator=(__bounded_iter const&) = default; + _LIBCPP_HIDE_FROM_ABI __bounded_iter& operator=(__bounded_iter&&) = default; + +private: + // Create an iterator wrapping the given iterator, and whose bounds are described + // by the provided [begin, end) range. + // + // This constructor does not check whether the resulting iterator is within its bounds. + // However, it does check that the provided [begin, end) range is a valid range (that + // is, begin <= end). + // + // Since it is non-standard for iterators to have this constructor, __bounded_iter must + // be created via `std::__make_bounded_iter`. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __bounded_iter( + _Iterator __current, _Iterator __begin, _Iterator __end) + : __current_(__current), __begin_(__begin), __end_(__end) { + _LIBCPP_ASSERT_INTERNAL(__begin <= __end, "__bounded_iter(current, begin, end): [begin, end) is not a valid range"); + } + + template + friend _LIBCPP_CONSTEXPR __bounded_iter<_It> __make_bounded_iter(_It, _It, _It); + +public: + // Dereference and indexing operations. + // + // These operations check that the iterator is dereferenceable, that is within [begin, end). + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator*() const _NOEXCEPT { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS( + __in_bounds(__current_), "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator"); + return *__current_; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pointer operator->() const _NOEXCEPT { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS( + __in_bounds(__current_), "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator"); + return std::__to_address(__current_); + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator[](difference_type __n) const _NOEXCEPT { + _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS( + __in_bounds(__current_ + __n), "__bounded_iter::operator[]: Attempt to index an iterator out-of-range"); + return __current_[__n]; + } + + // Arithmetic operations. + // + // These operations do not check that the resulting iterator is within the bounds, since that + // would make it impossible to create a past-the-end iterator. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter& operator++() _NOEXCEPT { + ++__current_; + return *this; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter operator++(int) _NOEXCEPT { + __bounded_iter __tmp(*this); + ++*this; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter& operator--() _NOEXCEPT { + --__current_; + return *this; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter operator--(int) _NOEXCEPT { + __bounded_iter __tmp(*this); + --*this; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter& operator+=(difference_type __n) _NOEXCEPT { + __current_ += __n; + return *this; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 friend __bounded_iter + operator+(__bounded_iter const& __self, difference_type __n) _NOEXCEPT { + __bounded_iter __tmp(__self); + __tmp += __n; + return __tmp; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 friend __bounded_iter + operator+(difference_type __n, __bounded_iter const& __self) _NOEXCEPT { + __bounded_iter __tmp(__self); + __tmp += __n; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __bounded_iter& operator-=(difference_type __n) _NOEXCEPT { + __current_ -= __n; + return *this; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 friend __bounded_iter + operator-(__bounded_iter const& __self, difference_type __n) _NOEXCEPT { + __bounded_iter __tmp(__self); + __tmp -= __n; + return __tmp; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 friend difference_type + operator-(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ - __y.__current_; + } + + // Comparison operations. + // + // These operations do not check whether the iterators are within their bounds. + // The valid range for each iterator is also not considered as part of the comparison, + // i.e. two iterators pointing to the same location will be considered equal even + // if they have different validity ranges. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator==(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ == __y.__current_; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator!=(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ != __y.__current_; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator<(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ < __y.__current_; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator>(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ > __y.__current_; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator<=(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ <= __y.__current_; + } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR friend bool + operator>=(__bounded_iter const& __x, __bounded_iter const& __y) _NOEXCEPT { + return __x.__current_ >= __y.__current_; + } + +private: + // Return whether the given iterator is in the bounds of this __bounded_iter. + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool __in_bounds(_Iterator const& __iter) const { + return __iter >= __begin_ && __iter < __end_; + } + + template + friend struct pointer_traits; + _Iterator __current_; // current iterator + _Iterator __begin_, __end_; // valid range represented as [begin, end) +}; + +template +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bounded_iter<_It> __make_bounded_iter(_It __it, _It __begin, _It __end) { + return __bounded_iter<_It>(std::move(__it), std::move(__begin), std::move(__end)); +} + +#if _LIBCPP_STD_VER <= 17 +template +struct __libcpp_is_contiguous_iterator<__bounded_iter<_Iterator> > : true_type {}; +#endif + +template +struct pointer_traits<__bounded_iter<_Iterator> > { + using pointer = __bounded_iter<_Iterator>; + using element_type = typename pointer_traits<_Iterator>::element_type; + using difference_type = typename pointer_traits<_Iterator>::difference_type; + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR static element_type* to_address(pointer __it) _NOEXCEPT { + return std::__to_address(__it.__current_); + } +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_BOUNDED_ITER_H diff --git a/lib/libcxx/include/__iterator/common_iterator.h b/lib/libcxx/include/__iterator/common_iterator.h new file mode 100644 index 0000000..95e248d --- /dev/null +++ b/lib/libcxx/include/__iterator/common_iterator.h @@ -0,0 +1,303 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_COMMON_ITERATOR_H +#define _LIBCPP___ITERATOR_COMMON_ITERATOR_H + +#include <__assert> +#include <__concepts/assignable.h> +#include <__concepts/constructible.h> +#include <__concepts/convertible_to.h> +#include <__concepts/copyable.h> +#include <__concepts/derived_from.h> +#include <__concepts/equality_comparable.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/readable_traits.h> +#include <__memory/addressof.h> +#include <__type_traits/is_pointer.h> +#include <__utility/declval.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept __can_use_postfix_proxy = + constructible_from, iter_reference_t<_Iter>> && + move_constructible>; + +template _Sent> + requires (!same_as<_Iter, _Sent> && copyable<_Iter>) +class common_iterator { + struct __proxy { + _LIBCPP_HIDE_FROM_ABI constexpr const iter_value_t<_Iter>* operator->() const noexcept { + return _VSTD::addressof(__value_); + } + iter_value_t<_Iter> __value_; + }; + + struct __postfix_proxy { + _LIBCPP_HIDE_FROM_ABI constexpr const iter_value_t<_Iter>& operator*() const noexcept { + return __value_; + } + iter_value_t<_Iter> __value_; + }; + +public: + variant<_Iter, _Sent> __hold_; + + _LIBCPP_HIDE_FROM_ABI common_iterator() requires default_initializable<_Iter> = default; + + _LIBCPP_HIDE_FROM_ABI constexpr common_iterator(_Iter __i) : __hold_(in_place_type<_Iter>, _VSTD::move(__i)) {} + _LIBCPP_HIDE_FROM_ABI constexpr common_iterator(_Sent __s) : __hold_(in_place_type<_Sent>, _VSTD::move(__s)) {} + + template + requires convertible_to && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr common_iterator(const common_iterator<_I2, _S2>& __other) + : __hold_([&]() -> variant<_Iter, _Sent> { + _LIBCPP_ASSERT_UNCATEGORIZED(!__other.__hold_.valueless_by_exception(), + "Attempted to construct from a valueless common_iterator"); + if (__other.__hold_.index() == 0) + return variant<_Iter, _Sent>{in_place_index<0>, _VSTD::__unchecked_get<0>(__other.__hold_)}; + return variant<_Iter, _Sent>{in_place_index<1>, _VSTD::__unchecked_get<1>(__other.__hold_)}; + }()) {} + + template + requires convertible_to && convertible_to && + assignable_from<_Iter&, const _I2&> && assignable_from<_Sent&, const _S2&> + _LIBCPP_HIDE_FROM_ABI common_iterator& operator=(const common_iterator<_I2, _S2>& __other) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__other.__hold_.valueless_by_exception(), + "Attempted to assign from a valueless common_iterator"); + + auto __idx = __hold_.index(); + auto __other_idx = __other.__hold_.index(); + + // If they're the same index, just assign. + if (__idx == 0 && __other_idx == 0) + _VSTD::__unchecked_get<0>(__hold_) = _VSTD::__unchecked_get<0>(__other.__hold_); + else if (__idx == 1 && __other_idx == 1) + _VSTD::__unchecked_get<1>(__hold_) = _VSTD::__unchecked_get<1>(__other.__hold_); + + // Otherwise replace with the oposite element. + else if (__other_idx == 1) + __hold_.template emplace<1>(_VSTD::__unchecked_get<1>(__other.__hold_)); + else if (__other_idx == 0) + __hold_.template emplace<0>(_VSTD::__unchecked_get<0>(__other.__hold_)); + + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) operator*() + { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__hold_), + "Attempted to dereference a non-dereferenceable common_iterator"); + return *_VSTD::__unchecked_get<_Iter>(__hold_); + } + + _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) operator*() const + requires __dereferenceable + { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__hold_), + "Attempted to dereference a non-dereferenceable common_iterator"); + return *_VSTD::__unchecked_get<_Iter>(__hold_); + } + + template + _LIBCPP_HIDE_FROM_ABI decltype(auto) operator->() const + requires indirectly_readable && + (requires(const _I2& __i) { __i.operator->(); } || + is_reference_v> || + constructible_from, iter_reference_t<_I2>>) + { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__hold_), + "Attempted to dereference a non-dereferenceable common_iterator"); + if constexpr (is_pointer_v<_Iter> || requires(const _Iter& __i) { __i.operator->(); }) { + return _VSTD::__unchecked_get<_Iter>(__hold_); + } else if constexpr (is_reference_v>) { + auto&& __tmp = *_VSTD::__unchecked_get<_Iter>(__hold_); + return _VSTD::addressof(__tmp); + } else { + return __proxy{*_VSTD::__unchecked_get<_Iter>(__hold_)}; + } + } + + _LIBCPP_HIDE_FROM_ABI common_iterator& operator++() { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__hold_), + "Attempted to increment a non-dereferenceable common_iterator"); + ++_VSTD::__unchecked_get<_Iter>(__hold_); return *this; + } + + _LIBCPP_HIDE_FROM_ABI decltype(auto) operator++(int) { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__hold_), + "Attempted to increment a non-dereferenceable common_iterator"); + if constexpr (forward_iterator<_Iter>) { + auto __tmp = *this; + ++*this; + return __tmp; + } else if constexpr (requires (_Iter& __i) { { *__i++ } -> __can_reference; } || + !__can_use_postfix_proxy<_Iter>) { + return _VSTD::__unchecked_get<_Iter>(__hold_)++; + } else { + auto __p = __postfix_proxy{**this}; + ++*this; + return __p; + } + } + + template _S2> + requires sentinel_for<_Sent, _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(const common_iterator& __x, const common_iterator<_I2, _S2>& __y) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__x.__hold_.valueless_by_exception(), + "Attempted to compare a valueless common_iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(!__y.__hold_.valueless_by_exception(), + "Attempted to compare a valueless common_iterator"); + + auto __x_index = __x.__hold_.index(); + auto __y_index = __y.__hold_.index(); + + if (__x_index == __y_index) + return true; + + if (__x_index == 0) + return _VSTD::__unchecked_get<_Iter>(__x.__hold_) == _VSTD::__unchecked_get<_S2>(__y.__hold_); + + return _VSTD::__unchecked_get<_Sent>(__x.__hold_) == _VSTD::__unchecked_get<_I2>(__y.__hold_); + } + + template _S2> + requires sentinel_for<_Sent, _I2> && equality_comparable_with<_Iter, _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==(const common_iterator& __x, const common_iterator<_I2, _S2>& __y) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__x.__hold_.valueless_by_exception(), + "Attempted to compare a valueless common_iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(!__y.__hold_.valueless_by_exception(), + "Attempted to compare a valueless common_iterator"); + + auto __x_index = __x.__hold_.index(); + auto __y_index = __y.__hold_.index(); + + if (__x_index == 1 && __y_index == 1) + return true; + + if (__x_index == 0 && __y_index == 0) + return _VSTD::__unchecked_get<_Iter>(__x.__hold_) == _VSTD::__unchecked_get<_I2>(__y.__hold_); + + if (__x_index == 0) + return _VSTD::__unchecked_get<_Iter>(__x.__hold_) == _VSTD::__unchecked_get<_S2>(__y.__hold_); + + return _VSTD::__unchecked_get<_Sent>(__x.__hold_) == _VSTD::__unchecked_get<_I2>(__y.__hold_); + } + + template _I2, sized_sentinel_for<_Iter> _S2> + requires sized_sentinel_for<_Sent, _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr iter_difference_t<_I2> operator-(const common_iterator& __x, const common_iterator<_I2, _S2>& __y) { + _LIBCPP_ASSERT_UNCATEGORIZED(!__x.__hold_.valueless_by_exception(), + "Attempted to subtract from a valueless common_iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(!__y.__hold_.valueless_by_exception(), + "Attempted to subtract a valueless common_iterator"); + + auto __x_index = __x.__hold_.index(); + auto __y_index = __y.__hold_.index(); + + if (__x_index == 1 && __y_index == 1) + return 0; + + if (__x_index == 0 && __y_index == 0) + return _VSTD::__unchecked_get<_Iter>(__x.__hold_) - _VSTD::__unchecked_get<_I2>(__y.__hold_); + + if (__x_index == 0) + return _VSTD::__unchecked_get<_Iter>(__x.__hold_) - _VSTD::__unchecked_get<_S2>(__y.__hold_); + + return _VSTD::__unchecked_get<_Sent>(__x.__hold_) - _VSTD::__unchecked_get<_I2>(__y.__hold_); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr iter_rvalue_reference_t<_Iter> iter_move(const common_iterator& __i) + noexcept(noexcept(ranges::iter_move(std::declval()))) + requires input_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__i.__hold_), + "Attempted to iter_move a non-dereferenceable common_iterator"); + return ranges::iter_move( _VSTD::__unchecked_get<_Iter>(__i.__hold_)); + } + + template _I2, class _S2> + _LIBCPP_HIDE_FROM_ABI friend constexpr void iter_swap(const common_iterator& __x, const common_iterator<_I2, _S2>& __y) + noexcept(noexcept(ranges::iter_swap(std::declval(), std::declval()))) + { + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_Iter>(__x.__hold_), + "Attempted to iter_swap a non-dereferenceable common_iterator"); + _LIBCPP_ASSERT_UNCATEGORIZED(std::holds_alternative<_I2>(__y.__hold_), + "Attempted to iter_swap a non-dereferenceable common_iterator"); + return ranges::iter_swap(_VSTD::__unchecked_get<_Iter>(__x.__hold_), _VSTD::__unchecked_get<_I2>(__y.__hold_)); + } +}; + +template +struct incrementable_traits> { + using difference_type = iter_difference_t<_Iter>; +}; + +template +concept __denotes_forward_iter = + requires { typename iterator_traits<_Iter>::iterator_category; } && + derived_from::iterator_category, forward_iterator_tag>; + +template +concept __common_iter_has_ptr_op = requires(const common_iterator<_Iter, _Sent>& __a) { + __a.operator->(); +}; + +template +struct __arrow_type_or_void { + using type = void; +}; + +template + requires __common_iter_has_ptr_op<_Iter, _Sent> +struct __arrow_type_or_void<_Iter, _Sent> { + using type = decltype(std::declval&>().operator->()); +}; + +template +struct iterator_traits> { + using iterator_concept = _If, + forward_iterator_tag, + input_iterator_tag>; + using iterator_category = _If<__denotes_forward_iter<_Iter>, + forward_iterator_tag, + input_iterator_tag>; + using pointer = typename __arrow_type_or_void<_Iter, _Sent>::type; + using value_type = iter_value_t<_Iter>; + using difference_type = iter_difference_t<_Iter>; + using reference = iter_reference_t<_Iter>; +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_COMMON_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/concepts.h b/lib/libcxx/include/__iterator/concepts.h new file mode 100644 index 0000000..dd9e8d6 --- /dev/null +++ b/lib/libcxx/include/__iterator/concepts.h @@ -0,0 +1,300 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_CONCEPTS_H +#define _LIBCPP___ITERATOR_CONCEPTS_H + +#include <__concepts/arithmetic.h> +#include <__concepts/assignable.h> +#include <__concepts/common_reference_with.h> +#include <__concepts/constructible.h> +#include <__concepts/copyable.h> +#include <__concepts/derived_from.h> +#include <__concepts/equality_comparable.h> +#include <__concepts/invocable.h> +#include <__concepts/movable.h> +#include <__concepts/predicate.h> +#include <__concepts/regular.h> +#include <__concepts/relation.h> +#include <__concepts/same_as.h> +#include <__concepts/semiregular.h> +#include <__concepts/totally_ordered.h> +#include <__config> +#include <__functional/invoke.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/readable_traits.h> +#include <__memory/pointer_traits.h> +#include <__type_traits/add_pointer.h> +#include <__type_traits/common_reference.h> +#include <__type_traits/is_pointer.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/remove_cv.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/forward.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [iterator.concept.readable] +template +concept __indirectly_readable_impl = + requires(const _In __i) { + typename iter_value_t<_In>; + typename iter_reference_t<_In>; + typename iter_rvalue_reference_t<_In>; + { *__i } -> same_as>; + { ranges::iter_move(__i) } -> same_as>; + } && + common_reference_with&&, iter_value_t<_In>&> && + common_reference_with&&, iter_rvalue_reference_t<_In>&&> && + common_reference_with&&, const iter_value_t<_In>&>; + +template +concept indirectly_readable = __indirectly_readable_impl>; + +template +using iter_common_reference_t = common_reference_t, iter_value_t<_Tp>&>; + +// [iterator.concept.writable] +template +concept indirectly_writable = + requires(_Out&& __o, _Tp&& __t) { + *__o = _VSTD::forward<_Tp>(__t); // not required to be equality-preserving + *_VSTD::forward<_Out>(__o) = _VSTD::forward<_Tp>(__t); // not required to be equality-preserving + const_cast&&>(*__o) = _VSTD::forward<_Tp>(__t); // not required to be equality-preserving + const_cast&&>(*_VSTD::forward<_Out>(__o)) = _VSTD::forward<_Tp>(__t); // not required to be equality-preserving + }; + +// [iterator.concept.winc] +template +concept __integer_like = integral<_Tp> && !same_as<_Tp, bool>; + +template +concept __signed_integer_like = signed_integral<_Tp>; + +template +concept weakly_incrementable = + // TODO: remove this once the clang bug is fixed (bugs.llvm.org/PR48173). + !same_as<_Ip, bool> && // Currently, clang does not handle bool correctly. + movable<_Ip> && + requires(_Ip __i) { + typename iter_difference_t<_Ip>; + requires __signed_integer_like>; + { ++__i } -> same_as<_Ip&>; // not required to be equality-preserving + __i++; // not required to be equality-preserving + }; + +// [iterator.concept.inc] +template +concept incrementable = + regular<_Ip> && + weakly_incrementable<_Ip> && + requires(_Ip __i) { + { __i++ } -> same_as<_Ip>; + }; + +// [iterator.concept.iterator] +template +concept input_or_output_iterator = + requires(_Ip __i) { + { *__i } -> __can_reference; + } && + weakly_incrementable<_Ip>; + +// [iterator.concept.sentinel] +template +concept sentinel_for = + semiregular<_Sp> && + input_or_output_iterator<_Ip> && + __weakly_equality_comparable_with<_Sp, _Ip>; + +template +inline constexpr bool disable_sized_sentinel_for = false; + +template +concept sized_sentinel_for = + sentinel_for<_Sp, _Ip> && + !disable_sized_sentinel_for, remove_cv_t<_Ip>> && + requires(const _Ip& __i, const _Sp& __s) { + { __s - __i } -> same_as>; + { __i - __s } -> same_as>; + }; + +// [iterator.concept.input] +template +concept input_iterator = + input_or_output_iterator<_Ip> && + indirectly_readable<_Ip> && + requires { typename _ITER_CONCEPT<_Ip>; } && + derived_from<_ITER_CONCEPT<_Ip>, input_iterator_tag>; + +// [iterator.concept.output] +template +concept output_iterator = + input_or_output_iterator<_Ip> && + indirectly_writable<_Ip, _Tp> && + requires (_Ip __it, _Tp&& __t) { + *__it++ = _VSTD::forward<_Tp>(__t); // not required to be equality-preserving + }; + +// [iterator.concept.forward] +template +concept forward_iterator = + input_iterator<_Ip> && + derived_from<_ITER_CONCEPT<_Ip>, forward_iterator_tag> && + incrementable<_Ip> && + sentinel_for<_Ip, _Ip>; + +// [iterator.concept.bidir] +template +concept bidirectional_iterator = + forward_iterator<_Ip> && + derived_from<_ITER_CONCEPT<_Ip>, bidirectional_iterator_tag> && + requires(_Ip __i) { + { --__i } -> same_as<_Ip&>; + { __i-- } -> same_as<_Ip>; + }; + +template +concept random_access_iterator = + bidirectional_iterator<_Ip> && + derived_from<_ITER_CONCEPT<_Ip>, random_access_iterator_tag> && + totally_ordered<_Ip> && + sized_sentinel_for<_Ip, _Ip> && + requires(_Ip __i, const _Ip __j, const iter_difference_t<_Ip> __n) { + { __i += __n } -> same_as<_Ip&>; + { __j + __n } -> same_as<_Ip>; + { __n + __j } -> same_as<_Ip>; + { __i -= __n } -> same_as<_Ip&>; + { __j - __n } -> same_as<_Ip>; + { __j[__n] } -> same_as>; + }; + +template +concept contiguous_iterator = + random_access_iterator<_Ip> && + derived_from<_ITER_CONCEPT<_Ip>, contiguous_iterator_tag> && + is_lvalue_reference_v> && + same_as, remove_cvref_t>> && + requires(const _Ip& __i) { + { _VSTD::to_address(__i) } -> same_as>>; + }; + +template +concept __has_arrow = input_iterator<_Ip> && (is_pointer_v<_Ip> || requires(_Ip __i) { __i.operator->(); }); + +// [indirectcallable.indirectinvocable] +template +concept indirectly_unary_invocable = + indirectly_readable<_It> && + copy_constructible<_Fp> && + invocable<_Fp&, iter_value_t<_It>&> && + invocable<_Fp&, iter_reference_t<_It>> && + invocable<_Fp&, iter_common_reference_t<_It>> && + common_reference_with< + invoke_result_t<_Fp&, iter_value_t<_It>&>, + invoke_result_t<_Fp&, iter_reference_t<_It>>>; + +template +concept indirectly_regular_unary_invocable = + indirectly_readable<_It> && + copy_constructible<_Fp> && + regular_invocable<_Fp&, iter_value_t<_It>&> && + regular_invocable<_Fp&, iter_reference_t<_It>> && + regular_invocable<_Fp&, iter_common_reference_t<_It>> && + common_reference_with< + invoke_result_t<_Fp&, iter_value_t<_It>&>, + invoke_result_t<_Fp&, iter_reference_t<_It>>>; + +template +concept indirect_unary_predicate = + indirectly_readable<_It> && + copy_constructible<_Fp> && + predicate<_Fp&, iter_value_t<_It>&> && + predicate<_Fp&, iter_reference_t<_It>> && + predicate<_Fp&, iter_common_reference_t<_It>>; + +template +concept indirect_binary_predicate = + indirectly_readable<_It1> && indirectly_readable<_It2> && + copy_constructible<_Fp> && + predicate<_Fp&, iter_value_t<_It1>&, iter_value_t<_It2>&> && + predicate<_Fp&, iter_value_t<_It1>&, iter_reference_t<_It2>> && + predicate<_Fp&, iter_reference_t<_It1>, iter_value_t<_It2>&> && + predicate<_Fp&, iter_reference_t<_It1>, iter_reference_t<_It2>> && + predicate<_Fp&, iter_common_reference_t<_It1>, iter_common_reference_t<_It2>>; + +template +concept indirect_equivalence_relation = + indirectly_readable<_It1> && indirectly_readable<_It2> && + copy_constructible<_Fp> && + equivalence_relation<_Fp&, iter_value_t<_It1>&, iter_value_t<_It2>&> && + equivalence_relation<_Fp&, iter_value_t<_It1>&, iter_reference_t<_It2>> && + equivalence_relation<_Fp&, iter_reference_t<_It1>, iter_value_t<_It2>&> && + equivalence_relation<_Fp&, iter_reference_t<_It1>, iter_reference_t<_It2>> && + equivalence_relation<_Fp&, iter_common_reference_t<_It1>, iter_common_reference_t<_It2>>; + +template +concept indirect_strict_weak_order = + indirectly_readable<_It1> && indirectly_readable<_It2> && + copy_constructible<_Fp> && + strict_weak_order<_Fp&, iter_value_t<_It1>&, iter_value_t<_It2>&> && + strict_weak_order<_Fp&, iter_value_t<_It1>&, iter_reference_t<_It2>> && + strict_weak_order<_Fp&, iter_reference_t<_It1>, iter_value_t<_It2>&> && + strict_weak_order<_Fp&, iter_reference_t<_It1>, iter_reference_t<_It2>> && + strict_weak_order<_Fp&, iter_common_reference_t<_It1>, iter_common_reference_t<_It2>>; + +template + requires (indirectly_readable<_Its> && ...) && invocable<_Fp, iter_reference_t<_Its>...> +using indirect_result_t = invoke_result_t<_Fp, iter_reference_t<_Its>...>; + +template +concept indirectly_movable = + indirectly_readable<_In> && + indirectly_writable<_Out, iter_rvalue_reference_t<_In>>; + +template +concept indirectly_movable_storable = + indirectly_movable<_In, _Out> && + indirectly_writable<_Out, iter_value_t<_In>> && + movable> && + constructible_from, iter_rvalue_reference_t<_In>> && + assignable_from&, iter_rvalue_reference_t<_In>>; + +template +concept indirectly_copyable = + indirectly_readable<_In> && + indirectly_writable<_Out, iter_reference_t<_In>>; + +template +concept indirectly_copyable_storable = + indirectly_copyable<_In, _Out> && + indirectly_writable<_Out, iter_value_t<_In>&> && + indirectly_writable<_Out, const iter_value_t<_In>&> && + indirectly_writable<_Out, iter_value_t<_In>&&> && + indirectly_writable<_Out, const iter_value_t<_In>&&> && + copyable> && + constructible_from, iter_reference_t<_In>> && + assignable_from&, iter_reference_t<_In>>; + +// Note: indirectly_swappable is located in iter_swap.h to prevent a dependency cycle +// (both iter_swap and indirectly_swappable require indirectly_readable). + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_CONCEPTS_H diff --git a/lib/libcxx/include/__iterator/counted_iterator.h b/lib/libcxx/include/__iterator/counted_iterator.h new file mode 100644 index 0000000..41b7e57 --- /dev/null +++ b/lib/libcxx/include/__iterator/counted_iterator.h @@ -0,0 +1,316 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_COUNTED_ITERATOR_H +#define _LIBCPP___ITERATOR_COUNTED_ITERATOR_H + +#include <__assert> +#include <__concepts/assignable.h> +#include <__concepts/common_with.h> +#include <__concepts/constructible.h> +#include <__concepts/convertible_to.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/default_sentinel.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/readable_traits.h> +#include <__memory/pointer_traits.h> +#include <__type_traits/add_pointer.h> +#include <__type_traits/conditional.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +struct __counted_iterator_concept {}; + +template + requires requires { typename _Iter::iterator_concept; } +struct __counted_iterator_concept<_Iter> { + using iterator_concept = typename _Iter::iterator_concept; +}; + +template +struct __counted_iterator_category {}; + +template + requires requires { typename _Iter::iterator_category; } +struct __counted_iterator_category<_Iter> { + using iterator_category = typename _Iter::iterator_category; +}; + +template +struct __counted_iterator_value_type {}; + +template +struct __counted_iterator_value_type<_Iter> { + using value_type = iter_value_t<_Iter>; +}; + +template +class counted_iterator + : public __counted_iterator_concept<_Iter> + , public __counted_iterator_category<_Iter> + , public __counted_iterator_value_type<_Iter> +{ +public: + _LIBCPP_NO_UNIQUE_ADDRESS _Iter __current_ = _Iter(); + iter_difference_t<_Iter> __count_ = 0; + + using iterator_type = _Iter; + using difference_type = iter_difference_t<_Iter>; + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator() requires default_initializable<_Iter> = default; + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator(_Iter __iter, iter_difference_t<_Iter> __n) + : __current_(_VSTD::move(__iter)), __count_(__n) { + _LIBCPP_ASSERT_UNCATEGORIZED(__n >= 0, "__n must not be negative."); + } + + template + requires convertible_to + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator(const counted_iterator<_I2>& __other) + : __current_(__other.__current_), __count_(__other.__count_) {} + + template + requires assignable_from<_Iter&, const _I2&> + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator& operator=(const counted_iterator<_I2>& __other) { + __current_ = __other.__current_; + __count_ = __other.__count_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr const _Iter& base() const& noexcept { return __current_; } + + _LIBCPP_HIDE_FROM_ABI + constexpr _Iter base() && { return _VSTD::move(__current_); } + + _LIBCPP_HIDE_FROM_ABI + constexpr iter_difference_t<_Iter> count() const noexcept { return __count_; } + + _LIBCPP_HIDE_FROM_ABI + constexpr decltype(auto) operator*() { + _LIBCPP_ASSERT_UNCATEGORIZED(__count_ > 0, "Iterator is equal to or past end."); + return *__current_; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr decltype(auto) operator*() const + requires __dereferenceable + { + _LIBCPP_ASSERT_UNCATEGORIZED(__count_ > 0, "Iterator is equal to or past end."); + return *__current_; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr auto operator->() const noexcept + requires contiguous_iterator<_Iter> + { + return _VSTD::to_address(__current_); + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator& operator++() { + _LIBCPP_ASSERT_UNCATEGORIZED(__count_ > 0, "Iterator already at or past end."); + ++__current_; + --__count_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + decltype(auto) operator++(int) { + _LIBCPP_ASSERT_UNCATEGORIZED(__count_ > 0, "Iterator already at or past end."); + --__count_; +#ifndef _LIBCPP_HAS_NO_EXCEPTIONS + try { return __current_++; } + catch(...) { ++__count_; throw; } +#else + return __current_++; +#endif // _LIBCPP_HAS_NO_EXCEPTIONS + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator operator++(int) + requires forward_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(__count_ > 0, "Iterator already at or past end."); + counted_iterator __tmp = *this; + ++*this; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator& operator--() + requires bidirectional_iterator<_Iter> + { + --__current_; + ++__count_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator operator--(int) + requires bidirectional_iterator<_Iter> + { + counted_iterator __tmp = *this; + --*this; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator operator+(iter_difference_t<_Iter> __n) const + requires random_access_iterator<_Iter> + { + return counted_iterator(__current_ + __n, __count_ - __n); + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr counted_iterator operator+( + iter_difference_t<_Iter> __n, const counted_iterator& __x) + requires random_access_iterator<_Iter> + { + return __x + __n; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator& operator+=(iter_difference_t<_Iter> __n) + requires random_access_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(__n <= __count_, "Cannot advance iterator past end."); + __current_ += __n; + __count_ -= __n; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator operator-(iter_difference_t<_Iter> __n) const + requires random_access_iterator<_Iter> + { + return counted_iterator(__current_ - __n, __count_ + __n); + } + + template _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr iter_difference_t<_I2> operator-( + const counted_iterator& __lhs, const counted_iterator<_I2>& __rhs) + { + return __rhs.__count_ - __lhs.__count_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr iter_difference_t<_Iter> operator-( + const counted_iterator& __lhs, default_sentinel_t) + { + return -__lhs.__count_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr iter_difference_t<_Iter> operator-( + default_sentinel_t, const counted_iterator& __rhs) + { + return __rhs.__count_; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr counted_iterator& operator-=(iter_difference_t<_Iter> __n) + requires random_access_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(-__n <= __count_, + "Attempt to subtract too large of a size: " + "counted_iterator would be decremented before the " + "first element of its range."); + __current_ -= __n; + __count_ += __n; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI + constexpr decltype(auto) operator[](iter_difference_t<_Iter> __n) const + requires random_access_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(__n < __count_, "Subscript argument must be less than size."); + return __current_[__n]; + } + + template _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==( + const counted_iterator& __lhs, const counted_iterator<_I2>& __rhs) + { + return __lhs.__count_ == __rhs.__count_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr bool operator==( + const counted_iterator& __lhs, default_sentinel_t) + { + return __lhs.__count_ == 0; + } + + template _I2> + _LIBCPP_HIDE_FROM_ABI friend constexpr strong_ordering operator<=>( + const counted_iterator& __lhs, const counted_iterator<_I2>& __rhs) + { + return __rhs.__count_ <=> __lhs.__count_; + } + + _LIBCPP_HIDE_FROM_ABI + friend constexpr iter_rvalue_reference_t<_Iter> iter_move(const counted_iterator& __i) + noexcept(noexcept(ranges::iter_move(__i.__current_))) + requires input_iterator<_Iter> + { + _LIBCPP_ASSERT_UNCATEGORIZED(__i.__count_ > 0, "Iterator must not be past end of range."); + return ranges::iter_move(__i.__current_); + } + + template _I2> + _LIBCPP_HIDE_FROM_ABI + friend constexpr void iter_swap(const counted_iterator& __x, const counted_iterator<_I2>& __y) + noexcept(noexcept(ranges::iter_swap(__x.__current_, __y.__current_))) + { + _LIBCPP_ASSERT_UNCATEGORIZED(__x.__count_ > 0 && __y.__count_ > 0, + "Iterators must not be past end of range."); + return ranges::iter_swap(__x.__current_, __y.__current_); + } +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(counted_iterator); + +template + requires same_as<_ITER_TRAITS<_Iter>, iterator_traits<_Iter>> +struct iterator_traits> : iterator_traits<_Iter> { + using pointer = conditional_t, + add_pointer_t>, void>; +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_COUNTED_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/cpp17_iterator_concepts.h b/lib/libcxx/include/__iterator/cpp17_iterator_concepts.h new file mode 100644 index 0000000..c4f49fe --- /dev/null +++ b/lib/libcxx/include/__iterator/cpp17_iterator_concepts.h @@ -0,0 +1,185 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_CPP17_ITERATOR_CONCEPTS_H +#define _LIBCPP___ITERATOR_CPP17_ITERATOR_CONCEPTS_H + +#include <__concepts/boolean_testable.h> +#include <__concepts/convertible_to.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_default_constructible.h> +#include <__type_traits/is_move_constructible.h> +#include <__type_traits/is_signed.h> +#include <__type_traits/is_void.h> +#include <__utility/as_const.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <__utility/swap.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +concept __cpp17_move_constructible = is_move_constructible_v<_Tp>; + +template +concept __cpp17_copy_constructible = __cpp17_move_constructible<_Tp> && is_copy_constructible_v<_Tp>; + +template +concept __cpp17_move_assignable = requires(_Tp __lhs, _Tp __rhs) { + { __lhs = std::move(__rhs) } -> same_as<_Tp&>; +}; + +template +concept __cpp17_copy_assignable = __cpp17_move_assignable<_Tp> && requires(_Tp __lhs, _Tp __rhs) { + { __lhs = __rhs } -> same_as<_Tp&>; + { __lhs = std::as_const(__rhs) } -> same_as<_Tp&>; +}; + +template +concept __cpp17_destructible = requires(_Tp __v) { __v.~_Tp(); }; + +template +concept __cpp17_equality_comparable = requires(_Tp __lhs, _Tp __rhs) { + { __lhs == __rhs } -> __boolean_testable; + { std::as_const(__lhs) == __rhs } -> __boolean_testable; + { __lhs == std::as_const(__rhs) } -> __boolean_testable; + { std::as_const(__lhs) == std::as_const(__rhs) } -> __boolean_testable; +}; + +template +concept __cpp17_default_constructible = is_default_constructible_v<_Tp>; + +template +concept __cpp17_iterator = + __cpp17_copy_constructible<_Iter> && __cpp17_copy_assignable<_Iter> && __cpp17_destructible<_Iter> && + (is_signed_v<__iter_diff_t<_Iter>> || is_void_v<__iter_diff_t<_Iter>>)&&requires(_Iter __iter) { + { *__iter }; + { ++__iter } -> same_as<_Iter&>; + }; + +template +concept __cpp17_input_iterator = + __cpp17_iterator<_Iter> && __cpp17_equality_comparable<_Iter> && requires(_Iter __lhs, _Iter __rhs) { + { __lhs != __rhs } -> __boolean_testable; + { std::as_const(__lhs) != __rhs } -> __boolean_testable; + { __lhs != std::as_const(__rhs) } -> __boolean_testable; + { std::as_const(__lhs) != std::as_const(__rhs) } -> __boolean_testable; + + { *__lhs } -> same_as<__iter_reference<_Iter>>; + { *std::as_const(__lhs) } -> same_as<__iter_reference<_Iter>>; + + { ++__lhs } -> same_as<_Iter&>; + { (void)__lhs++ }; + { *__lhs++ }; + }; + +template +concept __cpp17_output_iterator = __cpp17_iterator<_Iter> && requires(_Iter __iter, _WriteTo __write) { + { *__iter = std::forward<_WriteTo>(__write) }; + { ++__iter } -> same_as<_Iter&>; + { __iter++ } -> convertible_to; + { *__iter++ = std::forward<_WriteTo>(__write) }; +}; + +template +concept __cpp17_forward_iterator = + __cpp17_input_iterator<_Iter> && __cpp17_default_constructible<_Iter> && requires(_Iter __iter) { + { __iter++ } -> convertible_to; + { *__iter++ } -> same_as<__iter_reference<_Iter>>; + }; + +template +concept __cpp17_bidirectional_iterator = __cpp17_forward_iterator<_Iter> && requires(_Iter __iter) { + { --__iter } -> same_as<_Iter&>; + { __iter-- } -> convertible_to; + { *__iter-- } -> same_as<__iter_reference<_Iter>>; +}; + +template +concept __cpp17_random_access_iterator = + __cpp17_bidirectional_iterator<_Iter> && requires(_Iter __iter, __iter_diff_t<_Iter> __n) { + { __iter += __n } -> same_as<_Iter&>; + + { __iter + __n } -> same_as<_Iter>; + { __n + __iter } -> same_as<_Iter>; + { std::as_const(__iter) + __n } -> same_as<_Iter>; + { __n + std::as_const(__iter) } -> same_as<_Iter>; + + { __iter -= __n } -> same_as<_Iter&>; + { __iter - __n } -> same_as<_Iter>; + { std::as_const(__iter) - __n } -> same_as<_Iter>; + + { __iter - __iter } -> same_as<__iter_diff_t<_Iter>>; + { std::as_const(__iter) - __iter } -> same_as<__iter_diff_t<_Iter>>; + { __iter - std::as_const(__iter) } -> same_as<__iter_diff_t<_Iter>>; + { std::as_const(__iter) - std::as_const(__iter) } -> same_as<__iter_diff_t<_Iter>>; + + { __iter[__n] } -> convertible_to<__iter_reference<_Iter>>; + { std::as_const(__iter)[__n] } -> convertible_to<__iter_reference<_Iter>>; + + { __iter < __iter } -> __boolean_testable; + { std::as_const(__iter) < __iter } -> __boolean_testable; + { __iter < std::as_const(__iter) } -> __boolean_testable; + { std::as_const(__iter) < std::as_const(__iter) } -> __boolean_testable; + + { __iter > __iter } -> __boolean_testable; + { std::as_const(__iter) > __iter } -> __boolean_testable; + { __iter > std::as_const(__iter) } -> __boolean_testable; + { std::as_const(__iter) > std::as_const(__iter) } -> __boolean_testable; + + { __iter >= __iter } -> __boolean_testable; + { std::as_const(__iter) >= __iter } -> __boolean_testable; + { __iter >= std::as_const(__iter) } -> __boolean_testable; + { std::as_const(__iter) >= std::as_const(__iter) } -> __boolean_testable; + + { __iter <= __iter } -> __boolean_testable; + { std::as_const(__iter) <= __iter } -> __boolean_testable; + { __iter <= std::as_const(__iter) } -> __boolean_testable; + { std::as_const(__iter) <= std::as_const(__iter) } -> __boolean_testable; + }; + +_LIBCPP_END_NAMESPACE_STD + +# ifndef _LIBCPP_DISABLE_ITERATOR_CHECKS +# define _LIBCPP_REQUIRE_CPP17_INPUT_ITERATOR(iter_t) static_assert(::std::__cpp17_input_iterator); +# define _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(iter_t, write_t) \ + static_assert(::std::__cpp17_output_iterator); +# define _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(iter_t) static_assert(::std::__cpp17_forward_iterator); +# define _LIBCPP_REQUIRE_CPP17_BIDIRECTIONAL_ITERATOR(iter_t) \ + static_assert(::std::__cpp17_bidirectional_iterator); +# define _LIBCPP_REQUIRE_CPP17_RANDOM_ACCESS_ITERATOR(iter_t) \ + static_assert(::std::__cpp17_random_access_iterator); +# else +# define _LIBCPP_REQUIRE_CPP17_INPUT_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(iter_t, write_t) +# define _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_BIDIRECTIONAL_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_RANDOM_ACCESS_ITERATOR(iter_t) +# endif + +#else // _LIBCPP_STD_VER >= 20 + +# define _LIBCPP_REQUIRE_CPP17_INPUT_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(iter_t, write_t) +# define _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_BIDIRECTIONAL_ITERATOR(iter_t) +# define _LIBCPP_REQUIRE_CPP17_RANDOM_ACCESS_ITERATOR(iter_t) + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ITERATOR_CPP17_ITERATOR_CONCEPTS_H diff --git a/lib/libcxx/include/__iterator/data.h b/lib/libcxx/include/__iterator/data.h new file mode 100644 index 0000000..f106807 --- /dev/null +++ b/lib/libcxx/include/__iterator/data.h @@ -0,0 +1,51 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_DATA_H +#define _LIBCPP___ITERATOR_DATA_H + +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +template constexpr +_LIBCPP_INLINE_VISIBILITY +auto data(_Cont& __c) +_NOEXCEPT_(noexcept(__c.data())) +-> decltype (__c.data()) +{ return __c.data(); } + +template constexpr +_LIBCPP_INLINE_VISIBILITY +auto data(const _Cont& __c) +_NOEXCEPT_(noexcept(__c.data())) +-> decltype (__c.data()) +{ return __c.data(); } + +template +_LIBCPP_INLINE_VISIBILITY +constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; } + +template +_LIBCPP_INLINE_VISIBILITY +constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); } + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_DATA_H diff --git a/lib/libcxx/include/__iterator/default_sentinel.h b/lib/libcxx/include/__iterator/default_sentinel.h new file mode 100644 index 0000000..d5fb2b6 --- /dev/null +++ b/lib/libcxx/include/__iterator/default_sentinel.h @@ -0,0 +1,30 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H +#define _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +struct default_sentinel_t { }; +inline constexpr default_sentinel_t default_sentinel{}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H diff --git a/lib/libcxx/include/__iterator/distance.h b/lib/libcxx/include/__iterator/distance.h new file mode 100644 index 0000000..ebe5473 --- /dev/null +++ b/lib/libcxx/include/__iterator/distance.h @@ -0,0 +1,108 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_DISTANCE_H +#define _LIBCPP___ITERATOR_DISTANCE_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/size.h> +#include <__type_traits/decay.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +typename iterator_traits<_InputIter>::difference_type +__distance(_InputIter __first, _InputIter __last, input_iterator_tag) +{ + typename iterator_traits<_InputIter>::difference_type __r(0); + for (; __first != __last; ++__first) + ++__r; + return __r; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +typename iterator_traits<_RandIter>::difference_type +__distance(_RandIter __first, _RandIter __last, random_access_iterator_tag) +{ + return __last - __first; +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +typename iterator_traits<_InputIter>::difference_type +distance(_InputIter __first, _InputIter __last) +{ + return _VSTD::__distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category()); +} + +#if _LIBCPP_STD_VER >= 20 + +// [range.iter.op.distance] + +namespace ranges { +namespace __distance { + +struct __fn { + template _Sp> + requires (!sized_sentinel_for<_Sp, _Ip>) + _LIBCPP_HIDE_FROM_ABI + constexpr iter_difference_t<_Ip> operator()(_Ip __first, _Sp __last) const { + iter_difference_t<_Ip> __n = 0; + while (__first != __last) { + ++__first; + ++__n; + } + return __n; + } + + template> _Sp> + _LIBCPP_HIDE_FROM_ABI + constexpr iter_difference_t<_Ip> operator()(_Ip&& __first, _Sp __last) const { + if constexpr (sized_sentinel_for<_Sp, __remove_cvref_t<_Ip>>) { + return __last - __first; + } else { + return __last - decay_t<_Ip>(__first); + } + } + + template + _LIBCPP_HIDE_FROM_ABI + constexpr range_difference_t<_Rp> operator()(_Rp&& __r) const { + if constexpr (sized_range<_Rp>) { + return static_cast>(ranges::size(__r)); + } else { + return operator()(ranges::begin(__r), ranges::end(__r)); + } + } +}; + +} // namespace __distance + +inline namespace __cpo { + inline constexpr auto distance = __distance::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_DISTANCE_H diff --git a/lib/libcxx/include/__iterator/empty.h b/lib/libcxx/include/__iterator/empty.h new file mode 100644 index 0000000..2cd4c7a --- /dev/null +++ b/lib/libcxx/include/__iterator/empty.h @@ -0,0 +1,44 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_EMPTY_H +#define _LIBCPP___ITERATOR_EMPTY_H + +#include <__config> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 17 + +template +_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY +constexpr auto empty(const _Cont& __c) +_NOEXCEPT_(noexcept(__c.empty())) +-> decltype (__c.empty()) +{ return __c.empty(); } + +template +_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY +constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; } + +template +_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY +constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; } + +#endif // _LIBCPP_STD_VER >= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_EMPTY_H diff --git a/lib/libcxx/include/__iterator/erase_if_container.h b/lib/libcxx/include/__iterator/erase_if_container.h new file mode 100644 index 0000000..532ec9c --- /dev/null +++ b/lib/libcxx/include/__iterator/erase_if_container.h @@ -0,0 +1,45 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H +#define _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +_LIBCPP_HIDE_FROM_ABI +typename _Container::size_type +__libcpp_erase_if_container(_Container& __c, _Predicate& __pred) { + typename _Container::size_type __old_size = __c.size(); + + const typename _Container::iterator __last = __c.end(); + for (typename _Container::iterator __iter = __c.begin(); __iter != __last;) { + if (__pred(*__iter)) + __iter = __c.erase(__iter); + else + ++__iter; + } + + return __old_size - __c.size(); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H diff --git a/lib/libcxx/include/__iterator/front_insert_iterator.h b/lib/libcxx/include/__iterator/front_insert_iterator.h new file mode 100644 index 0000000..7c77dae --- /dev/null +++ b/lib/libcxx/include/__iterator/front_insert_iterator.h @@ -0,0 +1,76 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_FRONT_INSERT_ITERATOR_H +#define _LIBCPP___ITERATOR_FRONT_INSERT_ITERATOR_H + +#include <__config> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS front_insert_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +protected: + _Container* container; +public: + typedef output_iterator_tag iterator_category; + typedef void value_type; +#if _LIBCPP_STD_VER >= 20 + typedef ptrdiff_t difference_type; +#else + typedef void difference_type; +#endif + typedef void pointer; + typedef void reference; + typedef _Container container_type; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 front_insert_iterator& operator=(const typename _Container::value_type& __value) + {container->push_front(__value); return *this;} +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 front_insert_iterator& operator=(typename _Container::value_type&& __value) + {container->push_front(_VSTD::move(__value)); return *this;} +#endif // _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 front_insert_iterator& operator*() {return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 front_insert_iterator& operator++() {return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 front_insert_iterator operator++(int) {return *this;} +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(front_insert_iterator); + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +front_insert_iterator<_Container> +front_inserter(_Container& __x) +{ + return front_insert_iterator<_Container>(__x); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_FRONT_INSERT_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/incrementable_traits.h b/lib/libcxx/include/__iterator/incrementable_traits.h new file mode 100644 index 0000000..604e958 --- /dev/null +++ b/lib/libcxx/include/__iterator/incrementable_traits.h @@ -0,0 +1,78 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_INCREMENTABLE_TRAITS_H +#define _LIBCPP___ITERATOR_INCREMENTABLE_TRAITS_H + +#include <__concepts/arithmetic.h> +#include <__config> +#include <__type_traits/conditional.h> +#include <__type_traits/is_object.h> +#include <__type_traits/is_primary_template.h> +#include <__type_traits/make_signed.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/declval.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [incrementable.traits] +template struct incrementable_traits {}; + +template +requires is_object_v<_Tp> +struct incrementable_traits<_Tp*> { + using difference_type = ptrdiff_t; +}; + +template +struct incrementable_traits : incrementable_traits<_Ip> {}; + +template +concept __has_member_difference_type = requires { typename _Tp::difference_type; }; + +template<__has_member_difference_type _Tp> +struct incrementable_traits<_Tp> { + using difference_type = typename _Tp::difference_type; +}; + +template +concept __has_integral_minus = + requires(const _Tp& __x, const _Tp& __y) { + { __x - __y } -> integral; + }; + +template<__has_integral_minus _Tp> +requires (!__has_member_difference_type<_Tp>) +struct incrementable_traits<_Tp> { + using difference_type = make_signed_t() - std::declval<_Tp>())>; +}; + +template +struct iterator_traits; + +// Let `RI` be `remove_cvref_t`. The type `iter_difference_t` denotes +// `incrementable_traits::difference_type` if `iterator_traits` names a specialization +// generated from the primary template, and `iterator_traits::difference_type` otherwise. +template +using iter_difference_t = typename conditional_t<__is_primary_template > >::value, + incrementable_traits >, + iterator_traits > >::difference_type; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_INCREMENTABLE_TRAITS_H diff --git a/lib/libcxx/include/__iterator/indirectly_comparable.h b/lib/libcxx/include/__iterator/indirectly_comparable.h new file mode 100644 index 0000000..e60ba25 --- /dev/null +++ b/lib/libcxx/include/__iterator/indirectly_comparable.h @@ -0,0 +1,34 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H +#define _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H + +#include <__config> +#include <__functional/identity.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept indirectly_comparable = + indirect_binary_predicate<_Rp, projected<_I1, _P1>, projected<_I2, _P2>>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H diff --git a/lib/libcxx/include/__iterator/insert_iterator.h b/lib/libcxx/include/__iterator/insert_iterator.h new file mode 100644 index 0000000..4e83373 --- /dev/null +++ b/lib/libcxx/include/__iterator/insert_iterator.h @@ -0,0 +1,86 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_INSERT_ITERATOR_H +#define _LIBCPP___ITERATOR_INSERT_ITERATOR_H + +#include <__config> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include <__ranges/access.h> +#include <__utility/move.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 +template +using __insert_iterator_iter_t = ranges::iterator_t<_Container>; +#else +template +using __insert_iterator_iter_t = typename _Container::iterator; +#endif + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS insert_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +protected: + _Container* container; + __insert_iterator_iter_t<_Container> iter; +public: + typedef output_iterator_tag iterator_category; + typedef void value_type; +#if _LIBCPP_STD_VER >= 20 + typedef ptrdiff_t difference_type; +#else + typedef void difference_type; +#endif + typedef void pointer; + typedef void reference; + typedef _Container container_type; + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator(_Container& __x, __insert_iterator_iter_t<_Container> __i) + : container(_VSTD::addressof(__x)), iter(__i) {} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator=(const typename _Container::value_type& __value) + {iter = container->insert(iter, __value); ++iter; return *this;} +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator=(typename _Container::value_type&& __value) + {iter = container->insert(iter, _VSTD::move(__value)); ++iter; return *this;} +#endif // _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator*() {return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator++() {return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator++(int) {return *this;} +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 +insert_iterator<_Container> +inserter(_Container& __x, __insert_iterator_iter_t<_Container> __i) +{ + return insert_iterator<_Container>(__x, __i); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_INSERT_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/istream_iterator.h b/lib/libcxx/include/__iterator/istream_iterator.h new file mode 100644 index 0000000..989902f --- /dev/null +++ b/lib/libcxx/include/__iterator/istream_iterator.h @@ -0,0 +1,105 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ISTREAM_ITERATOR_H +#define _LIBCPP___ITERATOR_ISTREAM_ITERATOR_H + +#include <__config> +#include <__iterator/default_sentinel.h> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include +#include // for forward declarations of char_traits and basic_istream + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template , class _Distance = ptrdiff_t> +class _LIBCPP_TEMPLATE_VIS istream_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +public: + typedef input_iterator_tag iterator_category; + typedef _Tp value_type; + typedef _Distance difference_type; + typedef const _Tp* pointer; + typedef const _Tp& reference; + typedef _CharT char_type; + typedef _Traits traits_type; + typedef basic_istream<_CharT,_Traits> istream_type; +private: + istream_type* __in_stream_; + _Tp __value_; +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(nullptr), __value_() {} +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI constexpr istream_iterator(default_sentinel_t) : istream_iterator() {} +#endif // _LIBCPP_STD_VER >= 20 + _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s)) + { + if (!(*__in_stream_ >> __value_)) + __in_stream_ = nullptr; + } + + _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;} + _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));} + _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++() + { + if (!(*__in_stream_ >> __value_)) + __in_stream_ = nullptr; + return *this; + } + _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int) + {istream_iterator __t(*this); ++(*this); return __t;} + + template + friend _LIBCPP_INLINE_VISIBILITY + bool + operator==(const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __x, + const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __y); + +#if _LIBCPP_STD_VER >= 20 + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const istream_iterator& __i, default_sentinel_t) { + return __i.__in_stream_ == nullptr; + } +#endif // _LIBCPP_STD_VER >= 20 +}; + +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x, + const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y) +{ + return __x.__in_stream_ == __y.__in_stream_; +} + +#if _LIBCPP_STD_VER <= 17 +template +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x, + const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y) +{ + return !(__x == __y); +} +#endif // _LIBCPP_STD_VER <= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_ISTREAM_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/istreambuf_iterator.h b/lib/libcxx/include/__iterator/istreambuf_iterator.h new file mode 100644 index 0000000..e39fec6 --- /dev/null +++ b/lib/libcxx/include/__iterator/istreambuf_iterator.h @@ -0,0 +1,119 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ISTREAMBUF_ITERATOR_H +#define _LIBCPP___ITERATOR_ISTREAMBUF_ITERATOR_H + +#include <__config> +#include <__iterator/default_sentinel.h> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include // for forward declaration of basic_streambuf + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS istreambuf_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +public: + typedef input_iterator_tag iterator_category; + typedef _CharT value_type; + typedef typename _Traits::off_type difference_type; + typedef _CharT* pointer; + typedef _CharT reference; + typedef _CharT char_type; + typedef _Traits traits_type; + typedef typename _Traits::int_type int_type; + typedef basic_streambuf<_CharT,_Traits> streambuf_type; + typedef basic_istream<_CharT,_Traits> istream_type; +private: + mutable streambuf_type* __sbuf_; + + class __proxy + { + char_type __keep_; + streambuf_type* __sbuf_; + _LIBCPP_INLINE_VISIBILITY + explicit __proxy(char_type __c, streambuf_type* __s) + : __keep_(__c), __sbuf_(__s) {} + friend class istreambuf_iterator; + public: + _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;} + }; + + _LIBCPP_INLINE_VISIBILITY + bool __test_for_eof() const + { + if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof())) + __sbuf_ = nullptr; + return __sbuf_ == nullptr; + } +public: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(nullptr) {} +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_INLINE_VISIBILITY constexpr istreambuf_iterator(default_sentinel_t) noexcept + : istreambuf_iterator() {} +#endif // _LIBCPP_STD_VER >= 20 + _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT + : __sbuf_(__s.rdbuf()) {} + _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT + : __sbuf_(__s) {} + _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT + : __sbuf_(__p.__sbuf_) {} + + _LIBCPP_INLINE_VISIBILITY char_type operator*() const + {return static_cast(__sbuf_->sgetc());} + _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++() + { + __sbuf_->sbumpc(); + return *this; + } + _LIBCPP_INLINE_VISIBILITY __proxy operator++(int) + { + return __proxy(__sbuf_->sbumpc(), __sbuf_); + } + + _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const + {return __test_for_eof() == __b.__test_for_eof();} + +#if _LIBCPP_STD_VER >= 20 + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const istreambuf_iterator& __i, default_sentinel_t) { + return __i.__test_for_eof(); + } +#endif // _LIBCPP_STD_VER >= 20 +}; + +template +inline _LIBCPP_INLINE_VISIBILITY +bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a, + const istreambuf_iterator<_CharT,_Traits>& __b) + {return __a.equal(__b);} + +#if _LIBCPP_STD_VER <= 17 +template +inline _LIBCPP_INLINE_VISIBILITY +bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a, + const istreambuf_iterator<_CharT,_Traits>& __b) + {return !__a.equal(__b);} +#endif // _LIBCPP_STD_VER <= 17 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_ISTREAMBUF_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/iter_move.h b/lib/libcxx/include/__iterator/iter_move.h new file mode 100644 index 0000000..d9ff90b --- /dev/null +++ b/lib/libcxx/include/__iterator/iter_move.h @@ -0,0 +1,109 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ITER_MOVE_H +#define _LIBCPP___ITERATOR_ITER_MOVE_H + +#include <__concepts/class_or_enum.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/declval.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [iterator.cust.move] + +namespace ranges { +namespace __iter_move { + +void iter_move(); + +template +concept __unqualified_iter_move = + __class_or_enum> && + requires (_Tp&& __t) { + // NOLINTNEXTLINE(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap + iter_move(std::forward<_Tp>(__t)); + }; + +template +concept __move_deref = + !__unqualified_iter_move<_Tp> && + requires (_Tp&& __t) { + *__t; + requires is_lvalue_reference_v; + }; + +template +concept __just_deref = + !__unqualified_iter_move<_Tp> && + !__move_deref<_Tp> && + requires (_Tp&& __t) { + *__t; + requires (!is_lvalue_reference_v); + }; + +// [iterator.cust.move] + +struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) iter_move ADL calls should only be made through ranges::iter_move + template + requires __unqualified_iter_move<_Ip> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) operator()(_Ip&& __i) const + noexcept(noexcept(iter_move(std::forward<_Ip>(__i)))) + { + return iter_move(std::forward<_Ip>(__i)); + } + // NOLINTEND(libcpp-robust-against-adl) + + template + requires __move_deref<_Ip> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Ip&& __i) const + noexcept(noexcept(std::move(*std::forward<_Ip>(__i)))) + -> decltype( std::move(*std::forward<_Ip>(__i))) + { return std::move(*std::forward<_Ip>(__i)); } + + template + requires __just_deref<_Ip> + [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Ip&& __i) const + noexcept(noexcept(*std::forward<_Ip>(__i))) + -> decltype( *std::forward<_Ip>(__i)) + { return *std::forward<_Ip>(__i); } +}; +} // namespace __iter_move + +inline namespace __cpo { + inline constexpr auto iter_move = __iter_move::__fn{}; +} // namespace __cpo +} // namespace ranges + +template<__dereferenceable _Tp> + requires requires(_Tp& __t) { { ranges::iter_move(__t) } -> __can_reference; } +using iter_rvalue_reference_t = decltype(ranges::iter_move(std::declval<_Tp&>())); + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_ITER_MOVE_H diff --git a/lib/libcxx/include/__iterator/iter_swap.h b/lib/libcxx/include/__iterator/iter_swap.h new file mode 100644 index 0000000..2fa92f6 --- /dev/null +++ b/lib/libcxx/include/__iterator/iter_swap.h @@ -0,0 +1,118 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ITER_SWAP_H +#define _LIBCPP___ITERATOR_ITER_SWAP_H + +#include <__concepts/class_or_enum.h> +#include <__concepts/swappable.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iter_move.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/readable_traits.h> +#include <__type_traits/remove_cvref.h> +#include <__utility/declval.h> +#include <__utility/forward.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [iter.cust.swap] + +namespace ranges { +namespace __iter_swap { + template + void iter_swap(_I1, _I2) = delete; + + template + concept __unqualified_iter_swap = + (__class_or_enum> || __class_or_enum>) && + requires (_T1&& __x, _T2&& __y) { + // NOLINTNEXTLINE(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap + iter_swap(_VSTD::forward<_T1>(__x), _VSTD::forward<_T2>(__y)); + }; + + template + concept __readable_swappable = + indirectly_readable<_T1> && indirectly_readable<_T2> && + swappable_with, iter_reference_t<_T2>>; + + + struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap + template + requires __unqualified_iter_swap<_T1, _T2> + _LIBCPP_HIDE_FROM_ABI + constexpr void operator()(_T1&& __x, _T2&& __y) const + noexcept(noexcept(iter_swap(_VSTD::forward<_T1>(__x), _VSTD::forward<_T2>(__y)))) + { + (void)iter_swap(_VSTD::forward<_T1>(__x), _VSTD::forward<_T2>(__y)); + } + // NOLINTEND(libcpp-robust-against-adl) + + template + requires (!__unqualified_iter_swap<_T1, _T2>) && + __readable_swappable<_T1, _T2> + _LIBCPP_HIDE_FROM_ABI + constexpr void operator()(_T1&& __x, _T2&& __y) const + noexcept(noexcept(ranges::swap(*_VSTD::forward<_T1>(__x), *_VSTD::forward<_T2>(__y)))) + { + ranges::swap(*_VSTD::forward<_T1>(__x), *_VSTD::forward<_T2>(__y)); + } + + template + requires (!__unqualified_iter_swap<_T1, _T2> && + !__readable_swappable<_T1, _T2>) && + indirectly_movable_storable<_T1, _T2> && + indirectly_movable_storable<_T2, _T1> + _LIBCPP_HIDE_FROM_ABI + constexpr void operator()(_T1&& __x, _T2&& __y) const + noexcept(noexcept(iter_value_t<_T2>(ranges::iter_move(__y))) && + noexcept(*__y = ranges::iter_move(__x)) && + noexcept(*_VSTD::forward<_T1>(__x) = std::declval>())) + { + iter_value_t<_T2> __old(ranges::iter_move(__y)); + *__y = ranges::iter_move(__x); + *_VSTD::forward<_T1>(__x) = _VSTD::move(__old); + } + }; +} // namespace __iter_swap + +inline namespace __cpo { + inline constexpr auto iter_swap = __iter_swap::__fn{}; +} // namespace __cpo +} // namespace ranges + +template +concept indirectly_swappable = + indirectly_readable<_I1> && indirectly_readable<_I2> && + requires(const _I1 __i1, const _I2 __i2) { + ranges::iter_swap(__i1, __i1); + ranges::iter_swap(__i2, __i2); + ranges::iter_swap(__i1, __i2); + ranges::iter_swap(__i2, __i1); + }; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_ITER_SWAP_H diff --git a/lib/libcxx/include/__iterator/iterator.h b/lib/libcxx/include/__iterator/iterator.h new file mode 100644 index 0000000..b417eea --- /dev/null +++ b/lib/libcxx/include/__iterator/iterator.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ITERATOR_H +#define _LIBCPP___ITERATOR_ITERATOR_H + +#include <__config> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 iterator +{ + typedef _Tp value_type; + typedef _Distance difference_type; + typedef _Pointer pointer; + typedef _Reference reference; + typedef _Category iterator_category; +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/iterator_traits.h b/lib/libcxx/include/__iterator/iterator_traits.h new file mode 100644 index 0000000..248987e --- /dev/null +++ b/lib/libcxx/include/__iterator/iterator_traits.h @@ -0,0 +1,554 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ITERATOR_TRAITS_H +#define _LIBCPP___ITERATOR_ITERATOR_TRAITS_H + +#include <__concepts/arithmetic.h> +#include <__concepts/constructible.h> +#include <__concepts/convertible_to.h> +#include <__concepts/copyable.h> +#include <__concepts/equality_comparable.h> +#include <__concepts/same_as.h> +#include <__concepts/totally_ordered.h> +#include <__config> +#include <__fwd/pair.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/readable_traits.h> +#include <__type_traits/add_const.h> +#include <__type_traits/common_reference.h> +#include <__type_traits/conditional.h> +#include <__type_traits/disjunction.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_object.h> +#include <__type_traits/is_primary_template.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_valid_expansion.h> +#include <__type_traits/remove_const.h> +#include <__type_traits/remove_cv.h> +#include <__type_traits/remove_cvref.h> +#include <__type_traits/void_t.h> +#include <__utility/declval.h> +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +using __with_reference = _Tp&; + +template +concept __can_reference = requires { + typename __with_reference<_Tp>; +}; + +template +concept __dereferenceable = requires(_Tp& __t) { + { *__t } -> __can_reference; // not required to be equality-preserving +}; + +// [iterator.traits] +template<__dereferenceable _Tp> +using iter_reference_t = decltype(*std::declval<_Tp&>()); + +#endif // _LIBCPP_STD_VER >= 20 + +template +struct _LIBCPP_TEMPLATE_VIS iterator_traits; + +struct _LIBCPP_TEMPLATE_VIS input_iterator_tag {}; +struct _LIBCPP_TEMPLATE_VIS output_iterator_tag {}; +struct _LIBCPP_TEMPLATE_VIS forward_iterator_tag : public input_iterator_tag {}; +struct _LIBCPP_TEMPLATE_VIS bidirectional_iterator_tag : public forward_iterator_tag {}; +struct _LIBCPP_TEMPLATE_VIS random_access_iterator_tag : public bidirectional_iterator_tag {}; +#if _LIBCPP_STD_VER >= 20 +struct _LIBCPP_TEMPLATE_VIS contiguous_iterator_tag : public random_access_iterator_tag {}; +#endif + +template +struct __iter_traits_cache { + using type = _If< + __is_primary_template >::value, + _Iter, + iterator_traits<_Iter> + >; +}; +template +using _ITER_TRAITS = typename __iter_traits_cache<_Iter>::type; + +struct __iter_concept_concept_test { + template + using _Apply = typename _ITER_TRAITS<_Iter>::iterator_concept; +}; +struct __iter_concept_category_test { + template + using _Apply = typename _ITER_TRAITS<_Iter>::iterator_category; +}; +struct __iter_concept_random_fallback { + template + using _Apply = __enable_if_t< + __is_primary_template >::value, + random_access_iterator_tag + >; +}; + +template struct __test_iter_concept + : _IsValidExpansion<_Tester::template _Apply, _Iter>, + _Tester +{ +}; + +template +struct __iter_concept_cache { + using type = _Or< + __test_iter_concept<_Iter, __iter_concept_concept_test>, + __test_iter_concept<_Iter, __iter_concept_category_test>, + __test_iter_concept<_Iter, __iter_concept_random_fallback> + >; +}; + +template +using _ITER_CONCEPT = typename __iter_concept_cache<_Iter>::type::template _Apply<_Iter>; + + +template +struct __has_iterator_typedefs +{ +private: + template static false_type __test(...); + template static true_type __test(__void_t* = nullptr, + __void_t* = nullptr, + __void_t* = nullptr, + __void_t* = nullptr, + __void_t* = nullptr); +public: + static const bool value = decltype(__test<_Tp>(0,0,0,0,0))::value; +}; + + +template +struct __has_iterator_category +{ +private: + template static false_type __test(...); + template static true_type __test(typename _Up::iterator_category* = nullptr); +public: + static const bool value = decltype(__test<_Tp>(nullptr))::value; +}; + +template +struct __has_iterator_concept +{ +private: + template static false_type __test(...); + template static true_type __test(typename _Up::iterator_concept* = nullptr); +public: + static const bool value = decltype(__test<_Tp>(nullptr))::value; +}; + +#if _LIBCPP_STD_VER >= 20 + +// The `cpp17-*-iterator` exposition-only concepts have very similar names to the `Cpp17*Iterator` named requirements +// from `[iterator.cpp17]`. To avoid confusion between the two, the exposition-only concepts have been banished to +// a "detail" namespace indicating they have a niche use-case. +namespace __iterator_traits_detail { +template +concept __cpp17_iterator = + requires(_Ip __i) { + { *__i } -> __can_reference; + { ++__i } -> same_as<_Ip&>; + { *__i++ } -> __can_reference; + } && + copyable<_Ip>; + +template +concept __cpp17_input_iterator = + __cpp17_iterator<_Ip> && + equality_comparable<_Ip> && + requires(_Ip __i) { + typename incrementable_traits<_Ip>::difference_type; + typename indirectly_readable_traits<_Ip>::value_type; + typename common_reference_t&&, + typename indirectly_readable_traits<_Ip>::value_type&>; + typename common_reference_t::value_type&>; + requires signed_integral::difference_type>; + }; + +template +concept __cpp17_forward_iterator = + __cpp17_input_iterator<_Ip> && + constructible_from<_Ip> && + is_reference_v> && + same_as>, + typename indirectly_readable_traits<_Ip>::value_type> && + requires(_Ip __i) { + { __i++ } -> convertible_to<_Ip const&>; + { *__i++ } -> same_as>; + }; + +template +concept __cpp17_bidirectional_iterator = + __cpp17_forward_iterator<_Ip> && + requires(_Ip __i) { + { --__i } -> same_as<_Ip&>; + { __i-- } -> convertible_to<_Ip const&>; + { *__i-- } -> same_as>; + }; + +template +concept __cpp17_random_access_iterator = + __cpp17_bidirectional_iterator<_Ip> && + totally_ordered<_Ip> && + requires(_Ip __i, typename incrementable_traits<_Ip>::difference_type __n) { + { __i += __n } -> same_as<_Ip&>; + { __i -= __n } -> same_as<_Ip&>; + { __i + __n } -> same_as<_Ip>; + { __n + __i } -> same_as<_Ip>; + { __i - __n } -> same_as<_Ip>; + { __i - __i } -> same_as; // NOLINT(misc-redundant-expression) ; This is llvm.org/PR54114 + { __i[__n] } -> convertible_to>; + }; +} // namespace __iterator_traits_detail + +template +concept __has_member_reference = requires { typename _Ip::reference; }; + +template +concept __has_member_pointer = requires { typename _Ip::pointer; }; + +template +concept __has_member_iterator_category = requires { typename _Ip::iterator_category; }; + +template +concept __specifies_members = requires { + typename _Ip::value_type; + typename _Ip::difference_type; + requires __has_member_reference<_Ip>; + requires __has_member_iterator_category<_Ip>; + }; + +template +struct __iterator_traits_member_pointer_or_void { + using type = void; +}; + +template<__has_member_pointer _Tp> +struct __iterator_traits_member_pointer_or_void<_Tp> { + using type = typename _Tp::pointer; +}; + +template +concept __cpp17_iterator_missing_members = + !__specifies_members<_Tp> && + __iterator_traits_detail::__cpp17_iterator<_Tp>; + +template +concept __cpp17_input_iterator_missing_members = + __cpp17_iterator_missing_members<_Tp> && + __iterator_traits_detail::__cpp17_input_iterator<_Tp>; + +// Otherwise, `pointer` names `void`. +template +struct __iterator_traits_member_pointer_or_arrow_or_void { using type = void; }; + +// [iterator.traits]/3.2.1 +// If the qualified-id `I::pointer` is valid and denotes a type, `pointer` names that type. +template<__has_member_pointer _Ip> +struct __iterator_traits_member_pointer_or_arrow_or_void<_Ip> { using type = typename _Ip::pointer; }; + +// Otherwise, if `decltype(declval().operator->())` is well-formed, then `pointer` names that +// type. +template + requires requires(_Ip& __i) { __i.operator->(); } && (!__has_member_pointer<_Ip>) +struct __iterator_traits_member_pointer_or_arrow_or_void<_Ip> { + using type = decltype(std::declval<_Ip&>().operator->()); +}; + +// Otherwise, `reference` names `iter-reference-t`. +template +struct __iterator_traits_member_reference { using type = iter_reference_t<_Ip>; }; + +// [iterator.traits]/3.2.2 +// If the qualified-id `I::reference` is valid and denotes a type, `reference` names that type. +template<__has_member_reference _Ip> +struct __iterator_traits_member_reference<_Ip> { using type = typename _Ip::reference; }; + +// [iterator.traits]/3.2.3.4 +// input_iterator_tag +template +struct __deduce_iterator_category { + using type = input_iterator_tag; +}; + +// [iterator.traits]/3.2.3.1 +// `random_access_iterator_tag` if `I` satisfies `cpp17-random-access-iterator`, or otherwise +template<__iterator_traits_detail::__cpp17_random_access_iterator _Ip> +struct __deduce_iterator_category<_Ip> { + using type = random_access_iterator_tag; +}; + +// [iterator.traits]/3.2.3.2 +// `bidirectional_iterator_tag` if `I` satisfies `cpp17-bidirectional-iterator`, or otherwise +template<__iterator_traits_detail::__cpp17_bidirectional_iterator _Ip> +struct __deduce_iterator_category<_Ip> { + using type = bidirectional_iterator_tag; +}; + +// [iterator.traits]/3.2.3.3 +// `forward_iterator_tag` if `I` satisfies `cpp17-forward-iterator`, or otherwise +template<__iterator_traits_detail::__cpp17_forward_iterator _Ip> +struct __deduce_iterator_category<_Ip> { + using type = forward_iterator_tag; +}; + +template +struct __iterator_traits_iterator_category : __deduce_iterator_category<_Ip> {}; + +// [iterator.traits]/3.2.3 +// If the qualified-id `I::iterator-category` is valid and denotes a type, `iterator-category` names +// that type. +template<__has_member_iterator_category _Ip> +struct __iterator_traits_iterator_category<_Ip> { + using type = typename _Ip::iterator_category; +}; + +// otherwise, it names void. +template +struct __iterator_traits_difference_type { using type = void; }; + +// If the qualified-id `incrementable_traits::difference_type` is valid and denotes a type, then +// `difference_type` names that type; +template +requires requires { typename incrementable_traits<_Ip>::difference_type; } +struct __iterator_traits_difference_type<_Ip> { + using type = typename incrementable_traits<_Ip>::difference_type; +}; + +// [iterator.traits]/3.4 +// Otherwise, `iterator_traits` has no members by any of the above names. +template +struct __iterator_traits {}; + +// [iterator.traits]/3.1 +// If `I` has valid ([temp.deduct]) member types `difference-type`, `value-type`, `reference`, and +// `iterator-category`, then `iterator-traits` has the following publicly accessible members: +template<__specifies_members _Ip> +struct __iterator_traits<_Ip> { + using iterator_category = typename _Ip::iterator_category; + using value_type = typename _Ip::value_type; + using difference_type = typename _Ip::difference_type; + using pointer = typename __iterator_traits_member_pointer_or_void<_Ip>::type; + using reference = typename _Ip::reference; +}; + +// [iterator.traits]/3.2 +// Otherwise, if `I` satisfies the exposition-only concept `cpp17-input-iterator`, +// `iterator-traits` has the following publicly accessible members: +template<__cpp17_input_iterator_missing_members _Ip> +struct __iterator_traits<_Ip> { + using iterator_category = typename __iterator_traits_iterator_category<_Ip>::type; + using value_type = typename indirectly_readable_traits<_Ip>::value_type; + using difference_type = typename incrementable_traits<_Ip>::difference_type; + using pointer = typename __iterator_traits_member_pointer_or_arrow_or_void<_Ip>::type; + using reference = typename __iterator_traits_member_reference<_Ip>::type; +}; + +// Otherwise, if `I` satisfies the exposition-only concept `cpp17-iterator`, then +// `iterator_traits` has the following publicly accessible members: +template<__cpp17_iterator_missing_members _Ip> +struct __iterator_traits<_Ip> { + using iterator_category = output_iterator_tag; + using value_type = void; + using difference_type = typename __iterator_traits_difference_type<_Ip>::type; + using pointer = void; + using reference = void; +}; + +template +struct iterator_traits : __iterator_traits<_Ip> { + using __primary_template = iterator_traits; +}; + +#else // _LIBCPP_STD_VER >= 20 + +template struct __iterator_traits {}; + +template struct __iterator_traits_impl {}; + +template +struct __iterator_traits_impl<_Iter, true> +{ + typedef typename _Iter::difference_type difference_type; + typedef typename _Iter::value_type value_type; + typedef typename _Iter::pointer pointer; + typedef typename _Iter::reference reference; + typedef typename _Iter::iterator_category iterator_category; +}; + +template +struct __iterator_traits<_Iter, true> + : __iterator_traits_impl + < + _Iter, + is_convertible::value || + is_convertible::value + > +{}; + +// iterator_traits will only have the nested types if Iterator::iterator_category +// exists. Else iterator_traits will be an empty class. This is a +// conforming extension which allows some programs to compile and behave as +// the client expects instead of failing at compile time. + +template +struct _LIBCPP_TEMPLATE_VIS iterator_traits + : __iterator_traits<_Iter, __has_iterator_typedefs<_Iter>::value> { + + using __primary_template = iterator_traits; +}; +#endif // _LIBCPP_STD_VER >= 20 + +template +#if _LIBCPP_STD_VER >= 20 +requires is_object_v<_Tp> +#endif +struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*> +{ + typedef ptrdiff_t difference_type; + typedef __remove_cv_t<_Tp> value_type; + typedef _Tp* pointer; + typedef _Tp& reference; + typedef random_access_iterator_tag iterator_category; +#if _LIBCPP_STD_VER >= 20 + typedef contiguous_iterator_tag iterator_concept; +#endif +}; + +template >::value> +struct __has_iterator_category_convertible_to + : is_convertible::iterator_category, _Up> +{}; + +template +struct __has_iterator_category_convertible_to<_Tp, _Up, false> : false_type {}; + +template ::value> +struct __has_iterator_concept_convertible_to + : is_convertible +{}; + +template +struct __has_iterator_concept_convertible_to<_Tp, _Up, false> : false_type {}; + +template +using __has_input_iterator_category = __has_iterator_category_convertible_to<_Tp, input_iterator_tag>; + +template +using __has_forward_iterator_category = __has_iterator_category_convertible_to<_Tp, forward_iterator_tag>; + +template +using __has_bidirectional_iterator_category = __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag>; + +template +using __has_random_access_iterator_category = __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag>; + +// __libcpp_is_contiguous_iterator determines if an iterator is known by +// libc++ to be contiguous, either because it advertises itself as such +// (in C++20) or because it is a pointer type or a known trivial wrapper +// around a (possibly fancy) pointer type, such as __wrap_iter. +// Such iterators receive special "contiguous" optimizations in +// std::copy and std::sort. +// +#if _LIBCPP_STD_VER >= 20 +template +struct __libcpp_is_contiguous_iterator : _Or< + __has_iterator_category_convertible_to<_Tp, contiguous_iterator_tag>, + __has_iterator_concept_convertible_to<_Tp, contiguous_iterator_tag> +> {}; +#else +template +struct __libcpp_is_contiguous_iterator : false_type {}; +#endif + +// Any native pointer which is an iterator is also a contiguous iterator. +template +struct __libcpp_is_contiguous_iterator<_Up*> : true_type {}; + + +template +class __wrap_iter; + +template +using __has_exactly_input_iterator_category + = integral_constant::value && + !__has_iterator_category_convertible_to<_Tp, forward_iterator_tag>::value>; + +template +using __has_exactly_forward_iterator_category + = integral_constant::value && + !__has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag>::value>; + +template +using __has_exactly_bidirectional_iterator_category + = integral_constant::value && + !__has_iterator_category_convertible_to<_Tp, random_access_iterator_tag>::value>; + +template +using __iter_value_type = typename iterator_traits<_InputIterator>::value_type; + +template +using __iter_key_type = __remove_const_t::value_type::first_type>; + +template +using __iter_mapped_type = typename iterator_traits<_InputIterator>::value_type::second_type; + +template +using __iter_to_alloc_type = pair< + typename add_const::value_type::first_type>::type, + typename iterator_traits<_InputIterator>::value_type::second_type>; + +template +using __iterator_category_type = typename iterator_traits<_Iter>::iterator_category; + +template +using __iterator_pointer_type = typename iterator_traits<_Iter>::pointer; + +template +using __iter_diff_t = typename iterator_traits<_Iter>::difference_type; + +template +using __iter_reference = typename iterator_traits<_Iter>::reference; + +#if _LIBCPP_STD_VER >= 20 + +// [readable.traits] + +// Let `RI` be `remove_cvref_t`. The type `iter_value_t` denotes +// `indirectly_readable_traits::value_type` if `iterator_traits` names a specialization +// generated from the primary template, and `iterator_traits::value_type` otherwise. +// This has to be in this file and not readable_traits.h to break the include cycle between the two. +template +using iter_value_t = typename conditional_t<__is_primary_template > >::value, + indirectly_readable_traits >, + iterator_traits > >::value_type; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_ITERATOR_TRAITS_H diff --git a/lib/libcxx/include/__iterator/iterator_with_data.h b/lib/libcxx/include/__iterator/iterator_with_data.h new file mode 100644 index 0000000..06c2fa6 --- /dev/null +++ b/lib/libcxx/include/__iterator/iterator_with_data.h @@ -0,0 +1,100 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H +#define _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H + +#include <__compare/compare_three_way_result.h> +#include <__compare/three_way_comparable.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/readable_traits.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 20 + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +class __iterator_with_data { + _Iterator __iter_{}; + _Data __data_{}; + +public: + using value_type = iter_value_t<_Iterator>; + using difference_type = iter_difference_t<_Iterator>; + + _LIBCPP_HIDE_FROM_ABI __iterator_with_data() = default; + + constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data(_Iterator __iter, _Data __data) + : __iter_(std::move(__iter)), __data_(std::move(__data)) {} + + constexpr _LIBCPP_HIDE_FROM_ABI _Iterator __get_iter() const { return __iter_; } + + constexpr _LIBCPP_HIDE_FROM_ABI _Data __get_data() && { return std::move(__data_); } + + friend constexpr _LIBCPP_HIDE_FROM_ABI bool + operator==(const __iterator_with_data& __lhs, const __iterator_with_data& __rhs) { + return __lhs.__iter_ == __rhs.__iter_; + } + + constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data& operator++() { + ++__iter_; + return *this; + } + + constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data operator++(int) { + auto __tmp = *this; + __iter_++; + return __tmp; + } + + constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data& operator--() + requires bidirectional_iterator<_Iterator> + { + --__iter_; + return *this; + } + + constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data operator--(int) + requires bidirectional_iterator<_Iterator> + { + auto __tmp = *this; + --__iter_; + return __tmp; + } + + constexpr _LIBCPP_HIDE_FROM_ABI iter_reference_t<_Iterator> operator*() const { return *__iter_; } + + _LIBCPP_HIDE_FROM_ABI friend constexpr iter_rvalue_reference_t<_Iterator> + iter_move(const __iterator_with_data& __iter) noexcept(noexcept(ranges::iter_move(__iter.__iter_))) { + return ranges::iter_move(__iter.__iter_); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr void + iter_swap(const __iterator_with_data& __lhs, + const __iterator_with_data& __rhs) noexcept(noexcept(ranges::iter_swap(__lhs.__iter_, __rhs.__iter_))) + requires indirectly_swappable<_Iterator> + { + return ranges::iter_swap(__lhs.__data_, __rhs.__iter_); + } +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 20 + +#endif // _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H diff --git a/lib/libcxx/include/__iterator/mergeable.h b/lib/libcxx/include/__iterator/mergeable.h new file mode 100644 index 0000000..494fda9 --- /dev/null +++ b/lib/libcxx/include/__iterator/mergeable.h @@ -0,0 +1,41 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_MERGEABLE_H +#define _LIBCPP___ITERATOR_MERGEABLE_H + +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__iterator/concepts.h> +#include <__iterator/projected.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept mergeable = + input_iterator<_Input1> && + input_iterator<_Input2> && + weakly_incrementable<_Output> && + indirectly_copyable<_Input1, _Output> && + indirectly_copyable<_Input2, _Output> && + indirect_strict_weak_order<_Comp, projected<_Input1, _Proj1>, projected<_Input2, _Proj2>>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_MERGEABLE_H diff --git a/lib/libcxx/include/__iterator/move_iterator.h b/lib/libcxx/include/__iterator/move_iterator.h new file mode 100644 index 0000000..2f79d9a --- /dev/null +++ b/lib/libcxx/include/__iterator/move_iterator.h @@ -0,0 +1,355 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_MOVE_ITERATOR_H +#define _LIBCPP___ITERATOR_MOVE_ITERATOR_H + +#include <__compare/compare_three_way_result.h> +#include <__compare/three_way_comparable.h> +#include <__concepts/assignable.h> +#include <__concepts/convertible_to.h> +#include <__concepts/derived_from.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/move_sentinel.h> +#include <__iterator/readable_traits.h> +#include <__type_traits/conditional.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_assignable.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_same.h> +#include <__type_traits/remove_reference.h> +#include <__utility/declval.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 +template +struct __move_iter_category_base {}; + +template + requires requires { typename iterator_traits<_Iter>::iterator_category; } +struct __move_iter_category_base<_Iter> { + using iterator_category = _If< + derived_from::iterator_category, random_access_iterator_tag>, + random_access_iterator_tag, + typename iterator_traits<_Iter>::iterator_category + >; +}; + +template +concept __move_iter_comparable = requires { + { std::declval() == std::declval<_Sent>() } -> convertible_to; +}; +#endif // _LIBCPP_STD_VER >= 20 + +template +class _LIBCPP_TEMPLATE_VIS move_iterator +#if _LIBCPP_STD_VER >= 20 + : public __move_iter_category_base<_Iter> +#endif +{ + #if _LIBCPP_STD_VER >= 20 +private: + _LIBCPP_HIDE_FROM_ABI + static constexpr auto __get_iter_concept() { + if constexpr (random_access_iterator<_Iter>) { + return random_access_iterator_tag{}; + } else if constexpr (bidirectional_iterator<_Iter>) { + return bidirectional_iterator_tag{}; + } else if constexpr (forward_iterator<_Iter>) { + return forward_iterator_tag{}; + } else { + return input_iterator_tag{}; + } + } +#endif // _LIBCPP_STD_VER >= 20 +public: +#if _LIBCPP_STD_VER >= 20 + using iterator_type = _Iter; + using iterator_concept = decltype(__get_iter_concept()); + // iterator_category is inherited and not always present + using value_type = iter_value_t<_Iter>; + using difference_type = iter_difference_t<_Iter>; + using pointer = _Iter; + using reference = iter_rvalue_reference_t<_Iter>; +#else + typedef _Iter iterator_type; + typedef _If< + __has_random_access_iterator_category<_Iter>::value, + random_access_iterator_tag, + typename iterator_traits<_Iter>::iterator_category + > iterator_category; + typedef typename iterator_traits::value_type value_type; + typedef typename iterator_traits::difference_type difference_type; + typedef iterator_type pointer; + + typedef typename iterator_traits::reference __reference; + typedef typename conditional< + is_reference<__reference>::value, + __libcpp_remove_reference_t<__reference>&&, + __reference + >::type reference; +#endif // _LIBCPP_STD_VER >= 20 + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + explicit move_iterator(_Iter __i) : __current_(std::move(__i)) {} + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator& operator++() { ++__current_; return *this; } + + _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + pointer operator->() const { return __current_; } + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI constexpr + move_iterator() requires is_constructible_v<_Iter> : __current_() {} + + template + requires (!_IsSame<_Up, _Iter>::value) && convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr + move_iterator(const move_iterator<_Up>& __u) : __current_(__u.base()) {} + + template + requires (!_IsSame<_Up, _Iter>::value) && + convertible_to && + assignable_from<_Iter&, const _Up&> + _LIBCPP_HIDE_FROM_ABI constexpr + move_iterator& operator=(const move_iterator<_Up>& __u) { + __current_ = __u.base(); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr const _Iter& base() const & noexcept { return __current_; } + _LIBCPP_HIDE_FROM_ABI constexpr _Iter base() && { return std::move(__current_); } + + _LIBCPP_HIDE_FROM_ABI constexpr + reference operator*() const { return ranges::iter_move(__current_); } + _LIBCPP_HIDE_FROM_ABI constexpr + reference operator[](difference_type __n) const { return ranges::iter_move(__current_ + __n); } + + _LIBCPP_HIDE_FROM_ABI constexpr + auto operator++(int) + requires forward_iterator<_Iter> + { + move_iterator __tmp(*this); ++__current_; return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI constexpr + void operator++(int) { ++__current_; } +#else + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator() : __current_() {} + + template ::value && is_convertible::value + > > + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator(const move_iterator<_Up>& __u) : __current_(__u.base()) {} + + template ::value && + is_convertible::value && + is_assignable<_Iter&, const _Up&>::value + > > + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator& operator=(const move_iterator<_Up>& __u) { + __current_ = __u.base(); + return *this; + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + _Iter base() const { return __current_; } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + reference operator*() const { return static_cast(*__current_); } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + reference operator[](difference_type __n) const { return static_cast(__current_[__n]); } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator operator++(int) { move_iterator __tmp(*this); ++__current_; return __tmp; } +#endif // _LIBCPP_STD_VER >= 20 + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator& operator--() { --__current_; return *this; } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator operator--(int) { move_iterator __tmp(*this); --__current_; return __tmp; } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator operator+(difference_type __n) const { return move_iterator(__current_ + __n); } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator& operator+=(difference_type __n) { __current_ += __n; return *this; } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator operator-(difference_type __n) const { return move_iterator(__current_ - __n); } + _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 + move_iterator& operator-=(difference_type __n) { __current_ -= __n; return *this; } + +#if _LIBCPP_STD_VER >= 20 + template _Sent> + friend _LIBCPP_HIDE_FROM_ABI constexpr + bool operator==(const move_iterator& __x, const move_sentinel<_Sent>& __y) + requires __move_iter_comparable<_Iter, _Sent> + { + return __x.base() == __y.base(); + } + + template _Sent> + friend _LIBCPP_HIDE_FROM_ABI constexpr + iter_difference_t<_Iter> operator-(const move_sentinel<_Sent>& __x, const move_iterator& __y) + { + return __x.base() - __y.base(); + } + + template _Sent> + friend _LIBCPP_HIDE_FROM_ABI constexpr + iter_difference_t<_Iter> operator-(const move_iterator& __x, const move_sentinel<_Sent>& __y) + { + return __x.base() - __y.base(); + } + + friend _LIBCPP_HIDE_FROM_ABI constexpr + iter_rvalue_reference_t<_Iter> iter_move(const move_iterator& __i) + noexcept(noexcept(ranges::iter_move(__i.__current_))) + { + return ranges::iter_move(__i.__current_); + } + + template _It2> + friend _LIBCPP_HIDE_FROM_ABI constexpr + void iter_swap(const move_iterator& __x, const move_iterator<_It2>& __y) + noexcept(noexcept(ranges::iter_swap(__x.__current_, __y.__current_))) + { + return ranges::iter_swap(__x.__current_, __y.__current_); + } +#endif // _LIBCPP_STD_VER >= 20 + +private: + template friend class move_iterator; + + _Iter __current_; +}; +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(move_iterator); + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() == __y.base(); +} + +#if _LIBCPP_STD_VER <= 17 +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() != __y.base(); +} +#endif // _LIBCPP_STD_VER <= 17 + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() < __y.base(); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() > __y.base(); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() <= __y.base(); +} + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() >= __y.base(); +} + +#if _LIBCPP_STD_VER >= 20 +template _Iter2> +inline _LIBCPP_HIDE_FROM_ABI constexpr +auto operator<=>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) + -> compare_three_way_result_t<_Iter1, _Iter2> +{ + return __x.base() <=> __y.base(); +} +#endif // _LIBCPP_STD_VER >= 20 + +#ifndef _LIBCPP_CXX03_LANG +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) + -> decltype(__x.base() - __y.base()) +{ + return __x.base() - __y.base(); +} +#else +template +inline _LIBCPP_HIDE_FROM_ABI +typename move_iterator<_Iter1>::difference_type +operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) +{ + return __x.base() - __y.base(); +} +#endif // !_LIBCPP_CXX03_LANG + +#if _LIBCPP_STD_VER >= 20 +template +inline _LIBCPP_HIDE_FROM_ABI constexpr +move_iterator<_Iter> operator+(iter_difference_t<_Iter> __n, const move_iterator<_Iter>& __x) + requires requires { { __x.base() + __n } -> same_as<_Iter>; } +{ + return __x + __n; +} +#else +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +move_iterator<_Iter> +operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x) +{ + return move_iterator<_Iter>(__x.base() + __n); +} +#endif // _LIBCPP_STD_VER >= 20 + +template +inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 +move_iterator<_Iter> +make_move_iterator(_Iter __i) +{ + return move_iterator<_Iter>(std::move(__i)); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_MOVE_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/move_sentinel.h b/lib/libcxx/include/__iterator/move_sentinel.h new file mode 100644 index 0000000..34b3c25 --- /dev/null +++ b/lib/libcxx/include/__iterator/move_sentinel.h @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_MOVE_SENTINEL_H +#define _LIBCPP___ITERATOR_MOVE_SENTINEL_H + +#include <__concepts/assignable.h> +#include <__concepts/convertible_to.h> +#include <__concepts/semiregular.h> +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +class _LIBCPP_TEMPLATE_VIS move_sentinel +{ +public: + _LIBCPP_HIDE_FROM_ABI + move_sentinel() = default; + + _LIBCPP_HIDE_FROM_ABI constexpr + explicit move_sentinel(_Sent __s) : __last_(std::move(__s)) {} + + template + requires convertible_to + _LIBCPP_HIDE_FROM_ABI constexpr + move_sentinel(const move_sentinel<_S2>& __s) : __last_(__s.base()) {} + + template + requires assignable_from<_Sent&, const _S2&> + _LIBCPP_HIDE_FROM_ABI constexpr + move_sentinel& operator=(const move_sentinel<_S2>& __s) + { __last_ = __s.base(); return *this; } + + _LIBCPP_HIDE_FROM_ABI constexpr _Sent base() const { return __last_; } + +private: + _Sent __last_ = _Sent(); +}; + +_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(move_sentinel); + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ITERATOR_MOVE_SENTINEL_H diff --git a/lib/libcxx/include/__iterator/next.h b/lib/libcxx/include/__iterator/next.h new file mode 100644 index 0000000..5aba095 --- /dev/null +++ b/lib/libcxx/include/__iterator/next.h @@ -0,0 +1,84 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_NEXT_H +#define _LIBCPP___ITERATOR_NEXT_H + +#include <__assert> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + typename enable_if<__has_input_iterator_category<_InputIter>::value, _InputIter>::type + next(_InputIter __x, typename iterator_traits<_InputIter>::difference_type __n = 1) { + _LIBCPP_ASSERT_UNCATEGORIZED(__n >= 0 || __has_bidirectional_iterator_category<_InputIter>::value, + "Attempt to next(it, n) with negative n on a non-bidirectional iterator"); + + _VSTD::advance(__x, __n); + return __x; +} + +#if _LIBCPP_STD_VER >= 20 + +// [range.iter.op.next] + +namespace ranges { +namespace __next { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI + constexpr _Ip operator()(_Ip __x) const { + ++__x; + return __x; + } + + template + _LIBCPP_HIDE_FROM_ABI + constexpr _Ip operator()(_Ip __x, iter_difference_t<_Ip> __n) const { + ranges::advance(__x, __n); + return __x; + } + + template _Sp> + _LIBCPP_HIDE_FROM_ABI constexpr _Ip operator()(_Ip __x, _Sp __bound_sentinel) const { + ranges::advance(__x, __bound_sentinel); + return __x; + } + + template _Sp> + _LIBCPP_HIDE_FROM_ABI constexpr _Ip operator()(_Ip __x, iter_difference_t<_Ip> __n, _Sp __bound_sentinel) const { + ranges::advance(__x, __n, __bound_sentinel); + return __x; + } +}; + +} // namespace __next + +inline namespace __cpo { + inline constexpr auto next = __next::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_NEXT_H diff --git a/lib/libcxx/include/__iterator/ostream_iterator.h b/lib/libcxx/include/__iterator/ostream_iterator.h new file mode 100644 index 0000000..025712b --- /dev/null +++ b/lib/libcxx/include/__iterator/ostream_iterator.h @@ -0,0 +1,71 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H +#define _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H + +#include <__config> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__memory/addressof.h> +#include +#include // for forward declarations of char_traits and basic_ostream + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template > +class _LIBCPP_TEMPLATE_VIS ostream_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +public: + typedef output_iterator_tag iterator_category; + typedef void value_type; +#if _LIBCPP_STD_VER >= 20 + typedef ptrdiff_t difference_type; +#else + typedef void difference_type; +#endif + typedef void pointer; + typedef void reference; + typedef _CharT char_type; + typedef _Traits traits_type; + typedef basic_ostream<_CharT, _Traits> ostream_type; + +private: + ostream_type* __out_stream_; + const char_type* __delim_; +public: + _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT + : __out_stream_(_VSTD::addressof(__s)), __delim_(nullptr) {} + _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT + : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {} + _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value) + { + *__out_stream_ << __value; + if (__delim_) + *__out_stream_ << __delim_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;} + _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;} + _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;} +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/ostreambuf_iterator.h b/lib/libcxx/include/__iterator/ostreambuf_iterator.h new file mode 100644 index 0000000..898ef90 --- /dev/null +++ b/lib/libcxx/include/__iterator/ostreambuf_iterator.h @@ -0,0 +1,77 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H +#define _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H + +#include <__config> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include +#include // for forward declaration of basic_streambuf + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +public: + typedef output_iterator_tag iterator_category; + typedef void value_type; +#if _LIBCPP_STD_VER >= 20 + typedef ptrdiff_t difference_type; +#else + typedef void difference_type; +#endif + typedef void pointer; + typedef void reference; + typedef _CharT char_type; + typedef _Traits traits_type; + typedef basic_streambuf<_CharT, _Traits> streambuf_type; + typedef basic_ostream<_CharT, _Traits> ostream_type; + +private: + streambuf_type* __sbuf_; +public: + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT + : __sbuf_(__s.rdbuf()) {} + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT + : __sbuf_(__s) {} + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c) + { + if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) + __sbuf_ = nullptr; + return *this; + } + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;} + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;} + _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;} + _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == nullptr;} + + template + friend + _LIBCPP_HIDE_FROM_ABI + ostreambuf_iterator<_Ch, _Tr> + __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s, + const _Ch* __ob, const _Ch* __op, const _Ch* __oe, + ios_base& __iob, _Ch __fl); +}; + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H diff --git a/lib/libcxx/include/__iterator/permutable.h b/lib/libcxx/include/__iterator/permutable.h new file mode 100644 index 0000000..adf88f5 --- /dev/null +++ b/lib/libcxx/include/__iterator/permutable.h @@ -0,0 +1,35 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_PERMUTABLE_H +#define _LIBCPP___ITERATOR_PERMUTABLE_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/iter_swap.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template +concept permutable = + forward_iterator<_Iterator> && + indirectly_movable_storable<_Iterator, _Iterator> && + indirectly_swappable<_Iterator, _Iterator>; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_PERMUTABLE_H diff --git a/lib/libcxx/include/__iterator/prev.h b/lib/libcxx/include/__iterator/prev.h new file mode 100644 index 0000000..d31cd8e --- /dev/null +++ b/lib/libcxx/include/__iterator/prev.h @@ -0,0 +1,77 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_PREV_H +#define _LIBCPP___ITERATOR_PREV_H + +#include <__assert> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iterator_traits.h> +#include <__type_traits/enable_if.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + typename enable_if<__has_input_iterator_category<_InputIter>::value, _InputIter>::type + prev(_InputIter __x, typename iterator_traits<_InputIter>::difference_type __n = 1) { + _LIBCPP_ASSERT_UNCATEGORIZED(__n <= 0 || __has_bidirectional_iterator_category<_InputIter>::value, + "Attempt to prev(it, n) with a positive n on a non-bidirectional iterator"); + _VSTD::advance(__x, -__n); + return __x; +} + +#if _LIBCPP_STD_VER >= 20 + +// [range.iter.op.prev] + +namespace ranges { +namespace __prev { + +struct __fn { + template + _LIBCPP_HIDE_FROM_ABI + constexpr _Ip operator()(_Ip __x) const { + --__x; + return __x; + } + + template + _LIBCPP_HIDE_FROM_ABI + constexpr _Ip operator()(_Ip __x, iter_difference_t<_Ip> __n) const { + ranges::advance(__x, -__n); + return __x; + } + + template + _LIBCPP_HIDE_FROM_ABI constexpr _Ip operator()(_Ip __x, iter_difference_t<_Ip> __n, _Ip __bound_iter) const { + ranges::advance(__x, -__n, __bound_iter); + return __x; + } +}; + +} // namespace __prev + +inline namespace __cpo { + inline constexpr auto prev = __prev::__fn{}; +} // namespace __cpo +} // namespace ranges + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_PREV_H diff --git a/lib/libcxx/include/__iterator/projected.h b/lib/libcxx/include/__iterator/projected.h new file mode 100644 index 0000000..e74e56d --- /dev/null +++ b/lib/libcxx/include/__iterator/projected.h @@ -0,0 +1,41 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_PROJECTED_H +#define _LIBCPP___ITERATOR_PROJECTED_H + +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__type_traits/remove_cvref.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +template _Proj> +struct projected { + using value_type = remove_cvref_t>; + indirect_result_t<_Proj&, _It> operator*() const; // not defined +}; + +template +struct incrementable_traits> { + using difference_type = iter_difference_t<_It>; +}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_PROJECTED_H diff --git a/lib/libcxx/include/__iterator/ranges_iterator_traits.h b/lib/libcxx/include/__iterator/ranges_iterator_traits.h new file mode 100644 index 0000000..a308641 --- /dev/null +++ b/lib/libcxx/include/__iterator/ranges_iterator_traits.h @@ -0,0 +1,42 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H +#define _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H + +#include <__config> +#include <__fwd/pair.h> +#include <__ranges/concepts.h> +#include <__type_traits/add_const.h> +#include <__type_traits/remove_const.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +template +using __range_key_type = __remove_const_t::first_type>; + +template +using __range_mapped_type = typename ranges::range_value_t<_Range>::second_type; + +template +using __range_to_alloc_type = + pair::first_type>, + typename ranges::range_value_t<_Range>::second_type>; + +#endif + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H diff --git a/lib/libcxx/include/__iterator/readable_traits.h b/lib/libcxx/include/__iterator/readable_traits.h new file mode 100644 index 0000000..9e101fc --- /dev/null +++ b/lib/libcxx/include/__iterator/readable_traits.h @@ -0,0 +1,81 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_READABLE_TRAITS_H +#define _LIBCPP___ITERATOR_READABLE_TRAITS_H + +#include <__concepts/same_as.h> +#include <__config> +#include <__type_traits/conditional.h> +#include <__type_traits/is_array.h> +#include <__type_traits/is_object.h> +#include <__type_traits/is_primary_template.h> +#include <__type_traits/remove_cv.h> +#include <__type_traits/remove_cvref.h> +#include <__type_traits/remove_extent.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 20 + +// [readable.traits] +template struct __cond_value_type {}; + +template +requires is_object_v<_Tp> +struct __cond_value_type<_Tp> { using value_type = remove_cv_t<_Tp>; }; + +template +concept __has_member_value_type = requires { typename _Tp::value_type; }; + +template +concept __has_member_element_type = requires { typename _Tp::element_type; }; + +template struct indirectly_readable_traits {}; + +template +requires is_array_v<_Ip> +struct indirectly_readable_traits<_Ip> { + using value_type = remove_cv_t>; +}; + +template +struct indirectly_readable_traits : indirectly_readable_traits<_Ip> {}; + +template +struct indirectly_readable_traits<_Tp*> : __cond_value_type<_Tp> {}; + +template<__has_member_value_type _Tp> +struct indirectly_readable_traits<_Tp> + : __cond_value_type {}; + +template<__has_member_element_type _Tp> +struct indirectly_readable_traits<_Tp> + : __cond_value_type {}; + +template<__has_member_value_type _Tp> + requires __has_member_element_type<_Tp> +struct indirectly_readable_traits<_Tp> {}; + +template<__has_member_value_type _Tp> + requires __has_member_element_type<_Tp> && + same_as, + remove_cv_t> +struct indirectly_readable_traits<_Tp> + : __cond_value_type {}; + +#endif // _LIBCPP_STD_VER >= 20 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_READABLE_TRAITS_H diff --git a/lib/libcxx/include/__iterator/reverse_access.h b/lib/libcxx/include/__iterator/reverse_access.h new file mode 100644 index 0000000..b8c5a07 --- /dev/null +++ b/lib/libcxx/include/__iterator/reverse_access.h @@ -0,0 +1,100 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_REVERSE_ACCESS_H +#define _LIBCPP___ITERATOR_REVERSE_ACCESS_H + +#include <__config> +#include <__iterator/reverse_iterator.h> +#include +#include + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 14 + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np]) +{ + return reverse_iterator<_Tp*>(__array + _Np); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np]) +{ + return reverse_iterator<_Tp*>(__array); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator rbegin(initializer_list<_Ep> __il) +{ + return reverse_iterator(__il.end()); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator rend(initializer_list<_Ep> __il) +{ + return reverse_iterator(__il.begin()); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto rbegin(_Cp& __c) -> decltype(__c.rbegin()) +{ + return __c.rbegin(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto rbegin(const _Cp& __c) -> decltype(__c.rbegin()) +{ + return __c.rbegin(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto rend(_Cp& __c) -> decltype(__c.rend()) +{ + return __c.rend(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto rend(const _Cp& __c) -> decltype(__c.rend()) +{ + return __c.rend(); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c)) +{ + return _VSTD::rbegin(__c); +} + +template +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c)) +{ + return _VSTD::rend(__c); +} + +#endif // _LIBCPP_STD_VER >= 14 + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ITERATOR_REVERSE_ACCESS_H diff --git a/lib/libcxx/include/__iterator/reverse_iterator.h b/lib/libcxx/include/__iterator/reverse_iterator.h new file mode 100644 index 0000000..beb10f7 --- /dev/null +++ b/lib/libcxx/include/__iterator/reverse_iterator.h @@ -0,0 +1,533 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ITERATOR_REVERSE_ITERATOR_H +#define _LIBCPP___ITERATOR_REVERSE_ITERATOR_H + +#include <__algorithm/unwrap_iter.h> +#include <__compare/compare_three_way_result.h> +#include <__compare/three_way_comparable.h> +#include <__concepts/convertible_to.h> +#include <__config> +#include <__iterator/advance.h> +#include <__iterator/concepts.h> +#include <__iterator/incrementable_traits.h> +#include <__iterator/iter_move.h> +#include <__iterator/iter_swap.h> +#include <__iterator/iterator.h> +#include <__iterator/iterator_traits.h> +#include <__iterator/next.h> +#include <__iterator/prev.h> +#include <__iterator/readable_traits.h> +#include <__iterator/segmented_iterator.h> +#include <__memory/addressof.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/subrange.h> +#include <__type_traits/conditional.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/is_assignable.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_nothrow_copy_constructible.h> +#include <__type_traits/is_pointer.h> +#include <__type_traits/is_same.h> +#include <__utility/declval.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH +template +class _LIBCPP_TEMPLATE_VIS reverse_iterator +#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) + : public iterator::iterator_category, + typename iterator_traits<_Iter>::value_type, + typename iterator_traits<_Iter>::difference_type, + typename iterator_traits<_Iter>::pointer, + typename iterator_traits<_Iter>::reference> +#endif +{ +_LIBCPP_SUPPRESS_DEPRECATED_POP +private: +#ifndef _LIBCPP_ABI_NO_ITERATOR_BASES + _Iter __t_; // no longer used as of LWG #2360, not removed due to ABI break +#endif + +#if _LIBCPP_STD_VER >= 20 + static_assert(__has_bidirectional_iterator_category<_Iter>::value || bidirectional_iterator<_Iter>, + "reverse_iterator requires It to be a bidirectional iterator."); +#endif // _LIBCPP_STD_VER >= 20 + +protected: + _Iter current; +public: + using iterator_type = _Iter; + + using iterator_category = _If<__has_random_access_iterator_category<_Iter>::value, + random_access_iterator_tag, + typename iterator_traits<_Iter>::iterator_category>; + using pointer = typename iterator_traits<_Iter>::pointer; +#if _LIBCPP_STD_VER >= 20 + using iterator_concept = _If, random_access_iterator_tag, bidirectional_iterator_tag>; + using value_type = iter_value_t<_Iter>; + using difference_type = iter_difference_t<_Iter>; + using reference = iter_reference_t<_Iter>; +#else + using value_type = typename iterator_traits<_Iter>::value_type; + using difference_type = typename iterator_traits<_Iter>::difference_type; + using reference = typename iterator_traits<_Iter>::reference; +#endif + +#ifndef _LIBCPP_ABI_NO_ITERATOR_BASES + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator() : __t_(), current() {} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + explicit reverse_iterator(_Iter __x) : __t_(__x), current(__x) {} + + template ::value && is_convertible<_Up const&, _Iter>::value + > > + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator(const reverse_iterator<_Up>& __u) + : __t_(__u.base()), current(__u.base()) + { } + + template ::value && + is_convertible<_Up const&, _Iter>::value && + is_assignable<_Iter&, _Up const&>::value + > > + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator=(const reverse_iterator<_Up>& __u) { + __t_ = current = __u.base(); + return *this; + } +#else + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator() : current() {} + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + explicit reverse_iterator(_Iter __x) : current(__x) {} + + template ::value && is_convertible<_Up const&, _Iter>::value + > > + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator(const reverse_iterator<_Up>& __u) + : current(__u.base()) + { } + + template ::value && + is_convertible<_Up const&, _Iter>::value && + is_assignable<_Iter&, _Up const&>::value + > > + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator=(const reverse_iterator<_Up>& __u) { + current = __u.base(); + return *this; + } +#endif + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + _Iter base() const {return current;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reference operator*() const {_Iter __tmp = current; return *--__tmp;} + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_INLINE_VISIBILITY + constexpr pointer operator->() const + requires is_pointer_v<_Iter> || requires(const _Iter __i) { __i.operator->(); } + { + if constexpr (is_pointer_v<_Iter>) { + return std::prev(current); + } else { + return std::prev(current).operator->(); + } + } +#else + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + pointer operator->() const { + return std::addressof(operator*()); + } +#endif // _LIBCPP_STD_VER >= 20 + + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator++() {--current; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator operator++(int) {reverse_iterator __tmp(*this); --current; return __tmp;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator--() {++current; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator operator+(difference_type __n) const {return reverse_iterator(current - __n);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator+=(difference_type __n) {current -= __n; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator operator-(difference_type __n) const {return reverse_iterator(current + __n);} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 + reference operator[](difference_type __n) const {return *(*this + __n);} + +#if _LIBCPP_STD_VER >= 20 + _LIBCPP_HIDE_FROM_ABI friend constexpr + iter_rvalue_reference_t<_Iter> iter_move(const reverse_iterator& __i) + noexcept(is_nothrow_copy_constructible_v<_Iter> && + noexcept(ranges::iter_move(--std::declval<_Iter&>()))) { + auto __tmp = __i.base(); + return ranges::iter_move(--__tmp); + } + + template _Iter2> + _LIBCPP_HIDE_FROM_ABI friend constexpr + void iter_swap(const reverse_iterator& __x, const reverse_iterator<_Iter2>& __y) + noexcept(is_nothrow_copy_constructible_v<_Iter> && + is_nothrow_copy_constructible_v<_Iter2> && + noexcept(ranges::iter_swap(--std::declval<_Iter&>(), --std::declval<_Iter2&>()))) { + auto __xtmp = __x.base(); + auto __ytmp = __y.base(); + ranges::iter_swap(--__xtmp, --__ytmp); + } +#endif // _LIBCPP_STD_VER >= 20 +}; + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() == __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() == __y.base(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() > __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() > __y.base(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() != __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() != __y.base(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() < __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() < __y.base(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() <= __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() <= __y.base(); +} + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +bool +operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +#if _LIBCPP_STD_VER >= 20 + requires requires { + { __x.base() >= __y.base() } -> convertible_to; + } +#endif // _LIBCPP_STD_VER >= 20 +{ + return __x.base() >= __y.base(); +} + +#if _LIBCPP_STD_VER >= 20 +template _Iter2> +_LIBCPP_HIDE_FROM_ABI constexpr +compare_three_way_result_t<_Iter1, _Iter2> +operator<=>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +{ + return __y.base() <=> __x.base(); +} +#endif // _LIBCPP_STD_VER >= 20 + +#ifndef _LIBCPP_CXX03_LANG +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +auto +operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +-> decltype(__y.base() - __x.base()) +{ + return __y.base() - __x.base(); +} +#else +template +inline _LIBCPP_INLINE_VISIBILITY +typename reverse_iterator<_Iter1>::difference_type +operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) +{ + return __y.base() - __x.base(); +} +#endif + +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator<_Iter> +operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x) +{ + return reverse_iterator<_Iter>(__x.base() - __n); +} + +#if _LIBCPP_STD_VER >= 20 +template + requires (!sized_sentinel_for<_Iter1, _Iter2>) +inline constexpr bool disable_sized_sentinel_for, reverse_iterator<_Iter2>> = true; +#endif // _LIBCPP_STD_VER >= 20 + +#if _LIBCPP_STD_VER >= 14 +template +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 +reverse_iterator<_Iter> make_reverse_iterator(_Iter __i) +{ + return reverse_iterator<_Iter>(__i); +} +#endif + +#if _LIBCPP_STD_VER <= 17 +template +using __unconstrained_reverse_iterator = reverse_iterator<_Iter>; +#else + +// __unconstrained_reverse_iterator allows us to use reverse iterators in the implementation of algorithms by working +// around a language issue in C++20. +// In C++20, when a reverse iterator wraps certain C++20-hostile iterators, calling comparison operators on it will +// result in a compilation error. However, calling comparison operators on the pristine hostile iterator is not +// an error. Thus, we cannot use reverse_iterators in the implementation of an algorithm that accepts a +// C++20-hostile iterator. This class is an internal workaround -- it is a copy of reverse_iterator with +// tweaks to make it support hostile iterators. +// +// A C++20-hostile iterator is one that defines a comparison operator where one of the arguments is an exact match +// and the other requires an implicit conversion, for example: +// friend bool operator==(const BaseIter&, const DerivedIter&); +// +// C++20 rules for rewriting equality operators create another overload of this function with parameters reversed: +// friend bool operator==(const DerivedIter&, const BaseIter&); +// +// This creates an ambiguity in overload resolution. +// +// Clang treats this ambiguity differently in different contexts. When operator== is actually called in the function +// body, the code is accepted with a warning. When a concept requires operator== to be a valid expression, however, +// it evaluates to false. Thus, the implementation of reverse_iterator::operator== can actually call operator== on its +// base iterators, but the constraints on reverse_iterator::operator== prevent it from being considered during overload +// resolution. This class simply removes the problematic constraints from comparison functions. +template +class __unconstrained_reverse_iterator { + _Iter __iter_; + +public: + static_assert(__has_bidirectional_iterator_category<_Iter>::value || bidirectional_iterator<_Iter>); + + using iterator_type = _Iter; + using iterator_category = + _If<__has_random_access_iterator_category<_Iter>::value, random_access_iterator_tag, __iterator_category_type<_Iter>>; + using pointer = __iterator_pointer_type<_Iter>; + using value_type = iter_value_t<_Iter>; + using difference_type = iter_difference_t<_Iter>; + using reference = iter_reference_t<_Iter>; + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator() = default; + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator(const __unconstrained_reverse_iterator&) = default; + _LIBCPP_HIDE_FROM_ABI constexpr explicit __unconstrained_reverse_iterator(_Iter __iter) : __iter_(__iter) {} + + _LIBCPP_HIDE_FROM_ABI constexpr _Iter base() const { return __iter_; } + _LIBCPP_HIDE_FROM_ABI constexpr reference operator*() const { + auto __tmp = __iter_; + return *--__tmp; + } + + _LIBCPP_HIDE_FROM_ABI constexpr pointer operator->() const { + if constexpr (is_pointer_v<_Iter>) { + return std::prev(__iter_); + } else { + return std::prev(__iter_).operator->(); + } + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr + iter_rvalue_reference_t<_Iter> iter_move(const __unconstrained_reverse_iterator& __i) + noexcept(is_nothrow_copy_constructible_v<_Iter> && + noexcept(ranges::iter_move(--std::declval<_Iter&>()))) { + auto __tmp = __i.base(); + return ranges::iter_move(--__tmp); + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator& operator++() { + --__iter_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator operator++(int) { + auto __tmp = *this; + --__iter_; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator& operator--() { + ++__iter_; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator operator--(int) { + auto __tmp = *this; + ++__iter_; + return __tmp; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator& operator+=(difference_type __n) { + __iter_ -= __n; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator& operator-=(difference_type __n) { + __iter_ += __n; + return *this; + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator operator+(difference_type __n) const { + return __unconstrained_reverse_iterator(__iter_ - __n); + } + + _LIBCPP_HIDE_FROM_ABI constexpr __unconstrained_reverse_iterator operator-(difference_type __n) const { + return __unconstrained_reverse_iterator(__iter_ + __n); + } + + _LIBCPP_HIDE_FROM_ABI constexpr difference_type operator-(const __unconstrained_reverse_iterator& __other) const { + return __other.__iter_ - __iter_; + } + + _LIBCPP_HIDE_FROM_ABI constexpr auto operator[](difference_type __n) const { return *(*this + __n); } + + // Deliberately unconstrained unlike the comparison functions in `reverse_iterator` -- see the class comment for the + // rationale. + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator==(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() == __rhs.base(); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator!=(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() != __rhs.base(); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator<(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() > __rhs.base(); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator>(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() < __rhs.base(); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator<=(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() >= __rhs.base(); + } + + _LIBCPP_HIDE_FROM_ABI friend constexpr bool + operator>=(const __unconstrained_reverse_iterator& __lhs, const __unconstrained_reverse_iterator& __rhs) { + return __lhs.base() <= __rhs.base(); + } +}; + +#endif // _LIBCPP_STD_VER <= 17 + +template