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/*
    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/>.
*/

#pragma once

#include <libsolidity/formal/SolverInterface.h>

#include <boost/noncopyable.hpp>

#include <z3++.h>

namespace dev
{
namespace solidity
{
namespace smt
{

class Z3Interface: public SolverInterface, public boost::noncopyable
{
public:
    Z3Interface();

    void reset() override;

    void push() override;
    void pop() override;

    Expression newFunction(std::string _name, Sort _domain, Sort _codomain) override;
    Expression newInteger(std::string _name) override;
    Expression newBool(std::string _name) override;

    void addAssertion(Expression const& _expr) override;
    std::pair<CheckResult, std::vector<std::string>> check(std::vector<Expression> const& _expressionsToEvaluate) override;

private:
    z3::expr toZ3Expr(Expression const& _expr);
    z3::sort z3Sort(smt::Sort _sort);

    z3::context m_context;
    z3::solver m_solver;
    std::map<std::string, z3::expr> m_constants;
    std::map<std::string, z3::func_decl> m_functions;
};

}
}
}