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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <compare>
#include <iterator>
#include <fmt/format.h>
#include "common/common_types.h"
#include "shader_recompiler/exception.h"
namespace Shader::Maxwell {
class Location {
static constexpr u32 VIRTUAL_OFFSET{std::numeric_limits<u32>::max()};
public:
constexpr Location() = default;
constexpr Location(u32 initial_offset) : offset{initial_offset} {
if (initial_offset % 8 != 0) {
throw InvalidArgument("initial_offset={} is not a multiple of 8", initial_offset);
}
Align();
}
[[nodiscard]] constexpr u32 Offset() const noexcept {
return offset;
}
[[nodiscard]] constexpr bool IsVirtual() const {
return offset == VIRTUAL_OFFSET;
}
constexpr auto operator<=>(const Location&) const noexcept = default;
constexpr Location operator++() noexcept {
const Location copy{*this};
Step();
return copy;
}
constexpr Location operator++(int) noexcept {
Step();
return *this;
}
constexpr Location operator--() noexcept {
const Location copy{*this};
Back();
return copy;
}
constexpr Location operator--(int) noexcept {
Back();
return *this;
}
constexpr Location operator+(int number) const {
Location new_pc{*this};
while (number > 0) {
--number;
++new_pc;
}
while (number < 0) {
++number;
--new_pc;
}
return new_pc;
}
constexpr Location operator-(int number) const {
return operator+(-number);
}
private:
constexpr void Align() {
offset += offset % 32 == 0 ? 8 : 0;
}
constexpr void Step() {
offset += 8 + (offset % 32 == 24 ? 8 : 0);
}
constexpr void Back() {
offset -= 8 + (offset % 32 == 8 ? 8 : 0);
}
u32 offset{VIRTUAL_OFFSET};
};
} // namespace Shader::Maxwell
template <>
struct fmt::formatter<Shader::Maxwell::Location> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Maxwell::Location& location, FormatContext& ctx) {
return fmt::format_to(ctx.out(), "{:04x}", location.Offset());
}
};
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