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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <variant>
#include "video_core/engines/shader_bytecode.h"
namespace VideoCommon::Shader {
using Tegra::Shader::ConditionCode;
using Tegra::Shader::Pred;
class ExprAnd;
class ExprOr;
class ExprNot;
class ExprPredicate;
class ExprCondCode;
class ExprVar;
class ExprBoolean;
using ExprData =
std::variant<ExprVar, ExprCondCode, ExprPredicate, ExprNot, ExprOr, ExprAnd, ExprBoolean>;
using Expr = std::shared_ptr<ExprData>;
class ExprAnd final {
public:
explicit ExprAnd(Expr a, Expr b) : operand1{a}, operand2{b} {}
bool operator==(const ExprAnd& b) const;
Expr operand1;
Expr operand2;
};
class ExprOr final {
public:
explicit ExprOr(Expr a, Expr b) : operand1{a}, operand2{b} {}
bool operator==(const ExprOr& b) const;
Expr operand1;
Expr operand2;
};
class ExprNot final {
public:
explicit ExprNot(Expr a) : operand1{a} {}
bool operator==(const ExprNot& b) const;
Expr operand1;
};
class ExprVar final {
public:
explicit ExprVar(u32 index) : var_index{index} {}
bool operator==(const ExprVar& b) const {
return var_index == b.var_index;
}
u32 var_index;
};
class ExprPredicate final {
public:
explicit ExprPredicate(u32 predicate) : predicate{predicate} {}
bool operator==(const ExprPredicate& b) const {
return predicate == b.predicate;
}
u32 predicate;
};
class ExprCondCode final {
public:
explicit ExprCondCode(ConditionCode cc) : cc{cc} {}
bool operator==(const ExprCondCode& b) const {
return cc == b.cc;
}
ConditionCode cc;
};
class ExprBoolean final {
public:
explicit ExprBoolean(bool val) : value{val} {}
bool operator==(const ExprBoolean& b) const {
return value == b.value;
}
bool value;
};
template <typename T, typename... Args>
Expr MakeExpr(Args&&... args) {
static_assert(std::is_convertible_v<T, ExprData>);
return std::make_shared<ExprData>(T(std::forward<Args>(args)...));
}
bool ExprAreEqual(Expr first, Expr second);
bool ExprAreOpposite(Expr first, Expr second);
Expr MakeExprNot(Expr first);
Expr MakeExprAnd(Expr first, Expr second);
Expr MakeExprOr(Expr first, Expr second);
bool ExprIsTrue(Expr first);
} // namespace VideoCommon::Shader
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