/*
	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/>.
*/

#include <cstdint>
#include <cstddef>
#include <string>
#include <ostream>
#include <sstream>
#include <stack>
#include <set>

#include <test/tools/ossfuzz/yulProto.pb.h>
#include <libdevcore/Common.h>
#include <libdevcore/FixedHash.h>

namespace yul
{
namespace test
{
namespace yul_fuzzer
{
class ProtoConverter
{
public:
	ProtoConverter()
	{
		// The hard-coded function template foo has 10 parameters that are already "live"
		m_numLiveVars = 10;
		m_numVarsPerScope.push(m_numLiveVars);
		m_numNestedForLoops = 0;
		m_inForScope.push(false);
	}
	ProtoConverter(ProtoConverter const&) = delete;
	ProtoConverter(ProtoConverter&&) = delete;
	std::string functionToString(Function const& _input);
	std::string protoToYul(uint8_t const* _data, size_t _size);

private:
	void visit(BinaryOp const&);
	void visit(Block const&);
	void visit(Literal const&);
	void visit(VarRef const&);
	void visit(Expression const&);
	void visit(VarDecl const&);
	void visit(TypedVarDecl const&);
	void visit(UnaryOp const&);
	void visit(AssignmentStatement const&);
	void visit(IfStmt const&);
	void visit(StoreFunc const&);
	void visit(Statement const&);
	void visit(Function const&);
	void visit(ForStmt const&);
	void visit(CaseStmt const&);
	void visit(SwitchStmt const&);
	void visit(TernaryOp const&);
	template <class T>
	void visit(google::protobuf::RepeatedPtrField<T> const& _repeated_field);

	std::string createHex(std::string const& _hexBytes) const;
	std::string createAlphaNum(std::string const& _strBytes) const;
	bool isCaseLiteralUnique(Literal const&);

	std::ostringstream m_output;
	std::stack<uint8_t> m_numVarsPerScope;
	int32_t m_numLiveVars;
	int32_t m_numNestedForLoops;
	std::stack<bool> m_inForScope;
	std::stack<std::set<dev::u256>> m_switchLiteralSetPerScope;
};
}
}
}