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/********************* */
/*! \file valuation.h
** \verbatim
** Original author: mdeters
** Major contributors: none
** Minor contributors (to current version): none
** 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
**
** A "valuation" proxy for TheoryEngine. This class breaks the dependence
** of theories' getValue() implementations on TheoryEngine. getValue()
** takes a Valuation, which delegates to TheoryEngine.
**/
#include "cvc4_private.h"
#ifndef __CVC4__THEORY__VALUATION_H
#define __CVC4__THEORY__VALUATION_H
#include "expr/node.h"
namespace CVC4 {
class TheoryEngine;
namespace theory {
class Valuation {
TheoryEngine* d_engine;
public:
Valuation(TheoryEngine* engine) :
d_engine(engine) {
}
Node getValue(TNode n);
/**
* Get the current SAT assignment to the node n.
*
* This is only permitted if n is a theory atom that has an associated
* SAT literal (or its negation).
*
* @return Node::null() if no current assignment; otherwise true or false.
*/
Node getSatValue(TNode n);
};/* class Valuation */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif /* __CVC4__THEORY__VALUATION_H */
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