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/********************* */
/*! \file lemma_output_channel.h
** \verbatim
** Top contributors (to current version):
** Morgan Deters, Paul Meng
** This file is part of the CVC4 project.
** Copyright (c) 2009-2017 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 Mechanism for communication about new lemmas
**
** This file defines an interface for use by the theory and propositional
** engines to communicate new lemmas to the "outside world," for example
** for lemma sharing between threads.
**/
#include "cvc4_public.h"
#ifndef __CVC4__LEMMA_OUTPUT_CHANNEL_H
#define __CVC4__LEMMA_OUTPUT_CHANNEL_H
#include "expr/expr.h"
namespace CVC4 {
/**
* This interface describes a mechanism for the propositional and theory
* engines to communicate with the "outside world" about new lemmas being
* discovered.
*/
class CVC4_PUBLIC LemmaOutputChannel {
public:
virtual ~LemmaOutputChannel() {}
/**
* Notifies this output channel that there's a new lemma.
* The lemma may or may not be in CNF.
*/
virtual void notifyNewLemma(Expr lemma) = 0;
};/* class LemmaOutputChannel */
}/* CVC4 namespace */
#endif /* __CVC4__LEMMA_OUTPUT_CHANNEL_H */
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