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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <string_view>
#include "shader_recompiler/exception.h"
#include "shader_recompiler/frontend/ir/opcodes.h"
namespace Shader::IR {
namespace {
struct OpcodeMeta {
std::string_view name;
Type type;
std::array<Type, 4> arg_types;
};
using enum Type;
constexpr std::array META_TABLE{
#define OPCODE(name_token, type_token, ...) \
OpcodeMeta{ \
.name{#name_token}, \
.type{type_token}, \
.arg_types{__VA_ARGS__}, \
},
#include "opcodes.inc"
#undef OPCODE
};
void ValidateOpcode(Opcode op) {
const size_t raw{static_cast<size_t>(op)};
if (raw >= META_TABLE.size()) {
throw InvalidArgument("Invalid opcode with raw value {}", raw);
}
}
} // Anonymous namespace
Type TypeOf(Opcode op) {
ValidateOpcode(op);
return META_TABLE[static_cast<size_t>(op)].type;
}
size_t NumArgsOf(Opcode op) {
ValidateOpcode(op);
const auto& arg_types{META_TABLE[static_cast<size_t>(op)].arg_types};
const auto distance{std::distance(arg_types.begin(), std::ranges::find(arg_types, Type::Void))};
return static_cast<size_t>(distance);
}
Type ArgTypeOf(Opcode op, size_t arg_index) {
ValidateOpcode(op);
const auto& arg_types{META_TABLE[static_cast<size_t>(op)].arg_types};
if (arg_index >= arg_types.size() || arg_types[arg_index] == Type::Void) {
throw InvalidArgument("Out of bounds argument");
}
return arg_types[arg_index];
}
std::string_view NameOf(Opcode op) {
ValidateOpcode(op);
return META_TABLE[static_cast<size_t>(op)].name;
}
} // namespace Shader::IR
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