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/********************* */
/*! \file valuation.cpp
** \verbatim
** Original author: mdeters
** Major contributors: taking
** Minor contributors (to current version): barrett, dejan
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief A "valuation" proxy for TheoryEngine
**
** Implementation of Valuation class.
**/
#include "expr/node.h"
#include "theory/valuation.h"
#include "theory/theory_engine.h"
#include "theory/rewriter.h"
namespace CVC4 {
namespace theory {
Node Valuation::getValue(TNode n) const {
return d_engine->getValue(n);
}
bool Valuation::isSatLiteral(TNode n) const {
return d_engine->getPropEngine()->isSatLiteral(n);
}
Node Valuation::getSatValue(TNode n) const {
if(n.getKind() == kind::NOT) {
Node atomRes = d_engine->getPropEngine()->getValue(n[0]);
if(atomRes.getKind() == kind::CONST_BOOLEAN) {
return NodeManager::currentNM()->mkConst(!atomRes.getConst<bool>());
} else {
Assert(atomRes.isNull());
return atomRes;
}
} else {
return d_engine->getPropEngine()->getValue(n);
}
}
bool Valuation::hasSatValue(TNode n, bool& value) const {
return d_engine->getPropEngine()->hasValue(n, value);
}
Node Valuation::ensureLiteral(TNode n) {
Debug("ensureLiteral") << "rewriting: " << n << std::endl;
Node rewritten = Rewriter::rewrite(n);
Debug("ensureLiteral") << " got: " << rewritten << std::endl;
Node preprocessed = d_engine->preprocess(rewritten);
Debug("ensureLiteral") << "preproced: " << preprocessed << std::endl;
d_engine->getPropEngine()->ensureLiteral(preprocessed);
return preprocessed;
}
}/* CVC4::theory namespace */
}/* CVC4 namespace */
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