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Asignment operators
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This commit is contained in:
David Gonzalez Martin 2025-04-11 09:38:05 -06:00
parent 9e08f6399e
commit 6c8cc69b6c
2 changed files with 172 additions and 1 deletions
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172
src/bootstrap.zig
View File

@ -471,6 +471,16 @@ pub const Statement = struct {
const Operator = enum {
@"=",
@"+=",
@"-=",
@"*=",
@"/=",
@"%=",
@">>=",
@"<<=",
@"&=",
@"|=",
@"^=",
};
};
};
@ -1549,6 +1559,14 @@ pub const Module = struct {
const token_id: Token.Id = switch (next_ch) {
'=' => switch (c) {
'!' => .@"!=",
'+' => .@"+=",
'-' => .@"-=",
'*' => .@"*=",
'/' => .@"/=",
'%' => .@"%=",
'^' => .@"^=",
'|' => .@"|=",
'&' => .@"&=",
else => @trap(),
},
else => switch (c) {
@ -1575,6 +1593,14 @@ pub const Module = struct {
.@"|",
.@"^",
.@"!=",
.@"+=",
.@"-=",
.@"*=",
.@"/=",
.@"%=",
.@"&=",
.@"|=",
.@"^=",
=> |tid| @unionInit(Token, @tagName(tid), {}),
};
@ -1897,12 +1923,72 @@ pub const Module = struct {
};
} else {
const operator_start_character = module.content[module.offset];
const operator_next_character = module.content[module.offset + 1];
const operator_next_next_character = module.content[module.offset + 2];
const operator: Statement.Assignment.Operator = switch (operator_start_character) {
'=' => .@"=",
'+' => switch (operator_next_character) {
'=' => .@"+=",
else => @trap(),
},
'-' => switch (operator_next_character) {
'=' => .@"-=",
else => @trap(),
},
'*' => switch (operator_next_character) {
'=' => .@"*=",
else => @trap(),
},
'/' => switch (operator_next_character) {
'=' => .@"/=",
else => @trap(),
},
'%' => switch (operator_next_character) {
'=' => .@"%=",
else => @trap(),
},
'>' => switch (operator_next_character) {
'>' => switch (operator_next_next_character) {
'=' => .@">>=",
else => @trap(),
},
else => @trap(),
},
'<' => switch (operator_next_character) {
'<' => switch (operator_next_next_character) {
'=' => .@"<<=",
else => @trap(),
},
else => @trap(),
},
'&' => switch (operator_next_character) {
'=' => .@"&=",
else => @trap(),
},
'|' => switch (operator_next_character) {
'=' => .@"|=",
else => @trap(),
},
'^' => switch (operator_next_character) {
'=' => .@"^=",
else => @trap(),
},
else => @trap(),
};
module.offset += switch (operator) {
.@"=" => 1,
.@"+=",
.@"-=",
.@"*=",
.@"/=",
.@"%=",
.@"&=",
.@"|=",
.@"^=",
=> 2,
.@">>=",
.@"<<=",
=> 3,
};
module.skip_space();
@ -3728,6 +3814,11 @@ pub const Module = struct {
}
},
},
.pointer => |pointer| {
_ = pointer; // TODO: pointer arithmetic
value.type = module.integer_type(64, false);
return;
},
else => @trap(),
},
.unary => |unary| {
@ -4173,12 +4264,91 @@ pub const Module = struct {
module.emit_assignment(function, local.variable.storage.?, local.variable.initial_value);
},
.assignment => |assignment| {
module.analyze(function, assignment.left, .{});
switch (assignment.kind) {
.@"=" => {
module.analyze(function, assignment.left, .{});
module.analyze_value_type(function, assignment.right, .{ .type = assignment.left.type.?.bb.pointer.type });
module.emit_assignment(function, assignment.left, assignment.right);
},
else => |kind| {
const pointer_type = assignment.left.type.?.bb.pointer;
const element_type = pointer_type.type;
assert(element_type.get_evaluation_kind() == .scalar);
const load = module.create_load(.{ .type = element_type, .value = assignment.left.llvm.?, .alignment = pointer_type.alignment });
module.analyze(function, assignment.right, .{ .type = element_type });
const a = load;
const b = assignment.right.llvm.?;
const right = switch (kind) {
.@"+=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_add(a, b),
.pointer => |pointer| module.llvm.builder.create_gep(.{
.type = pointer.type.llvm.handle.?,
.aggregate = a,
.indices = &.{b},
}),
else => module.report_error(),
},
.@"-=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_sub(a, b),
.pointer => |pointer| module.llvm.builder.create_gep(.{
.type = pointer.type.llvm.handle.?,
.aggregate = a,
.indices = &.{module.negate_llvm_value(b, assignment.right.is_constant())},
}),
else => module.report_error(),
},
.@"*=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_mul(a, b),
else => module.report_error(),
},
.@"/=" => switch (element_type.bb) {
.integer => |integer| switch (integer.signed) {
true => module.llvm.builder.create_sdiv(a, b),
false => module.llvm.builder.create_udiv(a, b),
},
else => module.report_error(),
},
.@"%=" => switch (element_type.bb) {
.integer => |integer| switch (integer.signed) {
true => module.llvm.builder.create_srem(a, b),
false => module.llvm.builder.create_urem(a, b),
},
else => module.report_error(),
},
.@"&=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_and(a, b),
else => module.report_error(),
},
.@"|=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_or(a, b),
else => module.report_error(),
},
.@"^=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_xor(a, b),
else => module.report_error(),
},
.@">>=" => switch (element_type.bb) {
.integer => |integer| switch (integer.signed) {
true => module.llvm.builder.create_ashr(a, b),
false => module.llvm.builder.create_lshr(a, b),
},
else => module.report_error(),
},
.@"<<=" => switch (element_type.bb) {
.integer => module.llvm.builder.create_shl(a, b),
else => module.report_error(),
},
else => @trap(),
};
_ = module.create_store(.{
.source_value = right,
.destination_value = assignment.left.llvm.?,
.source_type = element_type,
.destination_type = element_type,
.alignment = pointer_type.alignment,
});
},
}
},
.expression => |expression_value| {

1
src/main.zig
View File

@ -205,4 +205,5 @@ const names = &[_][]const u8{
"basic_branch",
"basic_array",
"argv",
"assignment_operators",
};