/*
	This file is part of solidity.

	solidity is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	solidity is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
 * Implements libFuzzer's custom mutator interface by making a call
 * to the Solidity custom mutator, defaulting to libfuzzer's
 * default mutator when the former fails.
 */

#pragma once

#include <liblangutil/Exceptions.h>

#include <cstddef>
#include <cstdint>
#include <ostream>
#include <random>

namespace solidity::test::fuzzer
{
struct SolidityCustomMutatorInterface
{
	SolidityCustomMutatorInterface(uint8_t* _data, size_t _size, size_t _maxSize, unsigned _seed);
	/// Mutates input provided by libFuzzer by invoking Solidity
	/// custom mutator and @returns size of the mutant
	size_t mutate();

	/// Raw pointer to libFuzzer provided input
	uint8_t* data;
	/// Size of libFuzzer provided input
	size_t size;
	/// Solidity mutant source code
	std::string out;
	/// Maximum length of mutant specified by libFuzzer
	size_t maxMutantSize;
	/// Pseudo random unsigned integer provided by libFuzzer to
	/// aid determinism
	unsigned int seed;
};
}