bloat-buster/src/compiler.h

#pragma once

#include <lib.h>

#define CommandF(F) \
    F(compile),\
    F(test),

ENUM(Command, u8, CommandF);

#define BuildModeF(F) \
    F(debug_none),\
    F(debug),\
    F(soft_optimize),\
    F(optimize_for_speed),\
    F(optimize_for_size),\
    F(aggressively_optimize_for_speed),\
    F(aggressively_optimize_for_size),

ENUM(BuildMode, u8, BuildModeF);

fn String build_mode_to_string(BuildMode build_mode)
{
    switch (build_mode)
    {
        case_to_name(BuildMode, debug_none);
        case_to_name(BuildMode, debug);
        case_to_name(BuildMode, soft_optimize);
        case_to_name(BuildMode, optimize_for_speed);
        case_to_name(BuildMode, optimize_for_size);
        case_to_name(BuildMode, aggressively_optimize_for_speed);
        case_to_name(BuildMode, aggressively_optimize_for_size);
    }
}

#define CPUArchitectureF(F) \
    F(x86_64)
ENUM(CPUArchitecture, u8, CPUArchitectureF);

#define OperatingSystemF(F) \
    F(linux_)
ENUM(OperatingSystem, u8, OperatingSystemF);

struct Target
{
    CPUArchitecture cpu;
    OperatingSystem os;
};

struct Compile
{
    String relative_file_path;
    BuildMode build_mode;
    bool has_debug_info;
    bool silent;
};

#define base_cache_dir "bb-cache"

enum class TypeId
{
};

struct TypeInteger
{
    u32 bit_count;
    bool is_signed;
};

struct Type
{
};

struct Value
{
};

struct Scope
{
};

struct Variable
{
};

struct Global
{
    Variable variable;
};

struct Local
{
    Variable variable;
};

struct MacroDeclaration
{
};

struct MacroInstantiation
{
};

struct Module
{
    Arena& arena;
    String content;
    u64 offset;
    u64 line_offset;
    u64 line_character_offset;

    Type* first_pointer_type;
    Type* first_slice_type;
    Type* first_pair_struct_type;
    Type* first_array_type;

    Type* base_type_allocation;
    Type* va_list_type;

    Value* void_value;
    Global* first_global;
    Global* current_function;
    MacroDeclaration* current_macro_declaration;
    MacroInstantiation* current_macro_instantiation;

    Scope scope;

    String name;
    String path;
    String executable;
    Slice<String>objects;

    Target target;
    BuildMode build_mode;
    bool has_debug_info;
    bool silent;

};

constexpr u64 i128_offset = 64 * 2;
constexpr u64 void_offset = i128_offset + 2;

fn Type* integer_type(Module& module, TypeInteger integer)
{
    assert(integer.bit_count);
    assert(integer.bit_count <= 64 || integer.bit_count == 128);
    auto index = integer.bit_count ? (i128_offset + integer.is_signed) : (integer.bit_count - 1 + (64 * integer.is_signed));
    return module.base_type_allocation + index;
}

fn Type* void_type(Module& module)
{
    return module.base_type_allocation + void_offset;
}

fn Type* noreturn_type(Module& module)
{
    return void_type(module) + 1;
}

struct Options
{
    String content;
    String path;
    String executable;
    String name;
    Slice<String> objects;
    Target target;
    BuildMode build_mode;
    bool has_debug_info;
    bool silent;
};

fn Type* new_type(Module& module)
{
    auto* result = &arena_allocate<Type>(module.arena, 1)[0];
    return result;
}

fn Value* new_value(Module& module)
{
    auto* result = &arena_allocate<Value>(module.arena, 1)[0];
    return result;
}

void parse(Module& module);
void emit(Module& module);