path: root/libsolidity/formal/SymbolicBoolVariable.h

/*
    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/SymbolicVariable.h>

namespace dev
{
namespace solidity
{

/**
 * Specialization of SymbolicVariable for Bool
 */
class SymbolicBoolVariable: public SymbolicVariable
{
public:
    SymbolicBoolVariable(
        Type const& _type,
        std::string const& _uniqueName,
        smt::SolverInterface& _interface
    );

    /// Sets the var to false.
    void setZeroValue();
    /// Does nothing since the SMT solver already knows the valid values for Bool.
    void setUnknownValue();

protected:
    smt::Expression valueAtIndex(int _index) const;
};

}
}