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/********************* -*- C++ -*- */
/** decision_engine.h
** This file is part of the CVC4 prototype.
** Copyright (c) 2009 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.
**
**/
#ifndef __CVC4_DECISION_ENGINE_H
#define __CVC4_DECISION_ENGINE_H
#include "core/literal.h"
namespace CVC4 {
// In terms of abstraction, this is below (and provides services to)
// PropEngine.
/**
* A decision mechanism for the next decision.
*/
class DecisionEngine {
public:
/**
* Get the next decision.
*/
virtual Literal nextDecision() = 0;
// TODO: design decision: decision engine should be notified of
// propagated lits, and also why(?) (so that it can make decisions
// based on the utility of various theories and various theory
// literals). How? Maybe TheoryEngine has a backdoor into
// DecisionEngine "behind the back" of the PropEngine?
};/* class DecisionEngine */
}/* CVC4 namespace */
#endif /* __CVC4_DECISION_ENGINE_H */
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