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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds, Gereon Kremer
*
* This file is part of the cvc5 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.
* ****************************************************************************
*
* Management of a distributed approach for equality engines over
* all theories.
*/
#include "cvc5_private.h"
#ifndef CVC5__THEORY__EE_MANAGER_DISTRIBUTED__H
#define CVC5__THEORY__EE_MANAGER_DISTRIBUTED__H
#include <memory>
#include "theory/ee_manager.h"
#include "theory/quantifiers/master_eq_notify.h"
namespace cvc5 {
namespace theory {
namespace eq {
class EqualityEngine;
}
/**
* The (distributed) equality engine manager. This encapsulates an architecture
* in which all theories maintain their own copy of an equality engine.
*
* This class is not responsible for actually initializing equality engines in
* theories (since this class does not have access to the internals of Theory).
* Instead, it is only responsible for the construction of the equality
* engine objects themselves. TheoryEngine is responsible for querying this
* class during finishInit() to determine the equality engines to pass to each
* theories based on getEeTheoryInfo.
*
* This class is also responsible for setting up the master equality engine,
* which is used as a special communication channel to quantifiers engine (e.g.
* for ensuring quantifiers E-matching is aware of terms from all theories).
*/
class EqEngineManagerDistributed : public EqEngineManager
{
public:
EqEngineManagerDistributed(Env& env, TheoryEngine& te, SharedSolver& shs);
~EqEngineManagerDistributed();
/**
* Initialize theories. This method allocates unique equality engines
* per theories and connects them to a master equality engine.
*/
void initializeTheories() override;
/** Notify model */
void notifyModel(bool incomplete) override;
private:
/** The master equality engine notify class */
std::unique_ptr<quantifiers::MasterNotifyClass> d_masterEENotify;
/** The master equality engine. */
std::unique_ptr<eq::EqualityEngine> d_masterEqualityEngine;
/** The equality engine of the shared solver / shared terms database. */
std::unique_ptr<eq::EqualityEngine> d_stbEqualityEngine;
};
} // namespace theory
} // namespace cvc5
#endif /* CVC5__THEORY__EE_MANAGER_DISTRIBUTED__H */
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