solidity/libsolidity/formal/CHCSmtLib2Interface.h
2020-01-07 15:51:50 +01:00

74 lines
2.1 KiB
C++

/*
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/>.
*/
/**
* Interface for solving Horn systems via smtlib2.
*/
#pragma once
#include <libsolidity/formal/CHCSolverInterface.h>
#include <libsolidity/formal/SMTLib2Interface.h>
namespace solidity::frontend::smt
{
class CHCSmtLib2Interface: public CHCSolverInterface
{
public:
explicit CHCSmtLib2Interface(
std::map<util::h256, std::string> const& _queryResponses,
ReadCallback::Callback const& _smtCallback
);
void reset();
void registerRelation(Expression const& _expr) override;
void addRule(Expression const& _expr, std::string const& _name) override;
std::pair<CheckResult, std::vector<std::string>> query(Expression const& _expr) override;
void declareVariable(std::string const& _name, SortPointer const& _sort) override;
std::vector<std::string> unhandledQueries() const { return m_unhandledQueries; }
SMTLib2Interface* smtlib2Interface() const { return m_smtlib2.get(); }
private:
void declareFunction(std::string const& _name, SortPointer const& _sort);
void write(std::string _data);
/// Communicates with the solver via the callback. Throws SMTSolverError on error.
std::string querySolver(std::string const& _input);
/// Used to access toSmtLibSort, SExpr, and handle variables.
std::unique_ptr<SMTLib2Interface> m_smtlib2;
std::string m_accumulatedOutput;
std::set<std::string> m_variables;
std::map<util::h256, std::string> const& m_queryResponses;
std::vector<std::string> m_unhandledQueries;
ReadCallback::Callback m_smtCallback;
};
}