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/********************* */
/*! \file decision_strategy.h
** \verbatim
** Top contributors (to current version):
** Kshitij Bansal, Andrew Reynolds, Mathias Preiner
** This file is part of the CVC4 project.
** Copyright (c) 2009-2021 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 Decision strategy
**
** Decision strategy
**/
#include "cvc4_private.h"
#ifndef CVC4__DECISION__DECISION_STRATEGY_H
#define CVC4__DECISION__DECISION_STRATEGY_H
#include <vector>
#include "expr/node.h"
#include "prop/sat_solver_types.h"
#include "smt/term_formula_removal.h"
namespace CVC5 {
class DecisionEngine;
namespace context {
class Context;
} // namespace context
namespace decision {
class DecisionStrategy {
protected:
DecisionEngine* d_decisionEngine;
public:
DecisionStrategy(DecisionEngine* de, context::Context *c) :
d_decisionEngine(de) {
}
virtual ~DecisionStrategy() { }
virtual prop::SatLiteral getNext(bool&) = 0;
};/* class DecisionStrategy */
class ITEDecisionStrategy : public DecisionStrategy {
public:
ITEDecisionStrategy(DecisionEngine* de, context::Context *c) :
DecisionStrategy(de, c) {
}
/**
* Add that assertion is an (input) assertion, not corresponding to a
* skolem definition.
*/
virtual void addAssertion(TNode assertion) = 0;
/**
* Add that lem is the skolem definition for skolem, which is a part of
* the current assertions.
*/
virtual void addSkolemDefinition(TNode lem, TNode skolem) = 0;
};/* class ITEDecisionStrategy */
} // namespace decision
} // namespace CVC5
#endif /* CVC4__DECISION__DECISION_STRATEGY_H */
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