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/********************* */
/*! \file valuation.cpp
** \verbatim
** Top contributors (to current version):
** Dejan Jovanovic, Andrew Reynolds, Morgan Deters
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. 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 "theory/valuation.h"
#include "expr/node.h"
#include "options/theory_options.h"
#include "theory/rewriter.h"
#include "theory/theory_engine.h"
namespace CVC4 {
namespace theory {
std::ostream& operator<<(std::ostream& os, EqualityStatus s)
{
switch (s)
{
case EQUALITY_TRUE_AND_PROPAGATED:
os << "EQUALITY_TRUE_AND_PROPAGATED";
break;
case EQUALITY_FALSE_AND_PROPAGATED:
os << "EQUALITY_FALSE_AND_PROPAGATED";
break;
case EQUALITY_TRUE: os << "EQUALITY_TRUE"; break;
case EQUALITY_FALSE: os << "EQUALITY_FALSE"; break;
case EQUALITY_TRUE_IN_MODEL: os << "EQUALITY_TRUE_IN_MODEL"; break;
case EQUALITY_FALSE_IN_MODEL: os << "EQUALITY_FALSE_IN_MODEL"; break;
case EQUALITY_UNKNOWN: os << "EQUALITY_UNKNOWN"; break;
default: Unhandled(); break;
}
return os;
}
bool equalityStatusCompatible(EqualityStatus s1, EqualityStatus s2) {
switch (s1) {
case EQUALITY_TRUE:
case EQUALITY_TRUE_IN_MODEL:
case EQUALITY_TRUE_AND_PROPAGATED:
switch (s2) {
case EQUALITY_TRUE:
case EQUALITY_TRUE_IN_MODEL:
case EQUALITY_TRUE_AND_PROPAGATED:
return true;
default:
return false;
}
break;
case EQUALITY_FALSE:
case EQUALITY_FALSE_IN_MODEL:
case EQUALITY_FALSE_AND_PROPAGATED:
switch (s2) {
case EQUALITY_FALSE:
case EQUALITY_FALSE_IN_MODEL:
case EQUALITY_FALSE_AND_PROPAGATED:
return true;
default:
return false;
}
break;
default:
return false;
}
}
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 {
if (d_engine->getPropEngine()->isSatLiteral(n)) {
return d_engine->getPropEngine()->hasValue(n, value);
} else {
return false;
}
}
EqualityStatus Valuation::getEqualityStatus(TNode a, TNode b) {
return d_engine->getEqualityStatus(a, b);
}
Node Valuation::getModelValue(TNode var) {
return d_engine->getModelValue(var);
}
TheoryModel* Valuation::getModel() {
return d_engine->getModel();
}
Node Valuation::ensureLiteral(TNode n) {
return d_engine->ensureLiteral(n);
}
bool Valuation::isDecision(Node lit) const {
return d_engine->getPropEngine()->isDecision(lit);
}
unsigned Valuation::getAssertionLevel() const{
return d_engine->getPropEngine()->getAssertionLevel();
}
std::pair<bool, Node> Valuation::entailmentCheck(
options::TheoryOfMode mode,
TNode lit,
const theory::EntailmentCheckParameters* params,
theory::EntailmentCheckSideEffects* out)
{
return d_engine->entailmentCheck(mode, lit, params, out);
}
bool Valuation::needCheck() const{
return d_engine->needCheck();
}
}/* CVC4::theory namespace */
}/* CVC4 namespace */
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