mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Implements the Fuzzer-Solver interface.
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*/
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#pragma once
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#include <libsolutil/LP.h>
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#include <libsolutil/LinearExpression.h>
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#include <string>
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namespace solidity::test::fuzzer::lpsolver
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{
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using solution = std::pair<
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solidity::util::LPResult,
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std::map<std::string, solidity::util::rational>
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>;
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class FuzzerSolverInterface
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{
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public:
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FuzzerSolverInterface(bool _supportModels);
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/// @returns constant rational.
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solidity::util::LinearExpression constant(solidity::util::rational _rationalConstant);
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/// @returns linear expression that equals zero.
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solidity::util::LinearExpression zero()
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{
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return constant(0);
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}
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/// @returns product of a rational factor and variable.
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solidity::util::LinearExpression variable(
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solidity::util::rational _factor,
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std::string const& _variable
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);
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/// Adds less-than-equal-zero constraint to solver.
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void addLEConstraint(solidity::util::LinearExpression _lhs);
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/// Adds equal-to-zero constraint to solver.
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void addEQConstraint(solidity::util::LinearExpression _lhs);
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/// Adds less-than-equal constraint from vector of factors.
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void addLEConstraint(std::vector<int> _factors);
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/// Adds equal-to constraint from vector of factors.
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void addEQConstraint(std::vector<int> _factors);
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/// Adds @param _constraint to LP solver.
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void addConstraint(std::pair<bool, std::vector<int>> _constraint);
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/// Adds @param _constraints to LP solver.
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void addConstraints(std::vector<std::pair<bool, std::vector<int>>> _constraints);
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/// @returns linear expression created from @param _factors.
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solidity::util::LinearExpression linearExpression(std::vector<int> _factors);
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/// Queries LP solver and @returns solution.
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solution check();
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/// Queries LP solver and @returns sat result as string.
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std::string checkResult();
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private:
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/// Adds variable if necessary to LP solver state and @returns index of variable.
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size_t variableIndex(std::string const& _name);
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/// @returns LP result as string.
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std::string lpResult(solidity::util::LPResult _result);
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solidity::util::LPSolver m_solver;
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solidity::util::SolvingState m_solvingState;
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};
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}
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