// Copyright 2021 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef rr_Pragma_hpp
#define rr_Pragma_hpp

#include <variant>

namespace rr {

enum BooleanPragmaOption
{
	MemorySanitizerInstrumentation,
	InitializeLocalVariables,
};

enum IntegerPragmaOption
{
	OptimizationLevel,  // O0, O1, O2 (default), O3
};

void Pragma(BooleanPragmaOption option, bool enable);
void Pragma(IntegerPragmaOption option, int value);

class ScopedPragma
{
public:
	ScopedPragma(BooleanPragmaOption option, bool enable);
	ScopedPragma(IntegerPragmaOption option, int value);

	~ScopedPragma();

private:
	struct BooleanPragma
	{
		BooleanPragmaOption option;
		bool enable;
	};

	struct IntegerPragma
	{
		IntegerPragmaOption option;
		int value;
	};

	std::variant<BooleanPragma, IntegerPragma> oldState;
};

}  // namespace rr

#endif  // rr_Pragma_hpp