libsolidity/formal/SymbolicBoolVariable.cpp


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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/>.
*/

#include <libsolidity/formal/SymbolicBoolVariable.h>

#include <libsolidity/ast/AST.h>

using namespace std;
using namespace dev;
using namespace dev::solidity;

SymbolicBoolVariable::SymbolicBoolVariable(
    Type const& _type,
    string const& _uniqueName,
    smt::SolverInterface&_interface
):
    SymbolicVariable(_type, _uniqueName, _interface)
{
    solAssert(_type.category() == Type::Category::Bool, "");
}

smt::Expression SymbolicBoolVariable::valueAtSequence(int _seq) const
{
    return m_interface.newBool(uniqueSymbol(_seq));
}

void SymbolicBoolVariable::setZeroValue(int _seq)
{
    m_interface.addAssertion(valueAtSequence(_seq) == smt::Expression(false));
}

void SymbolicBoolVariable::setUnknownValue(int)
{
}