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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds
*
* 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.
* ****************************************************************************
*
* Utilities for management of equality engines.
*/
#include "cvc5_private.h"
#ifndef CVC5__THEORY__EE_MANAGER__H
#define CVC5__THEORY__EE_MANAGER__H
#include <map>
#include <memory>
#include "theory/ee_setup_info.h"
#include "theory/theory.h"
#include "theory/uf/equality_engine.h"
namespace cvc5 {
class TheoryEngine;
namespace theory {
class SharedSolver;
/**
* This is (theory-agnostic) information associated with the management of
* an equality engine for a single theory. This information is maintained
* by the manager class below.
*
* Currently, this simply is the equality engine itself, for memory
* management purposes.
*/
struct EeTheoryInfo
{
EeTheoryInfo() : d_usedEe(nullptr) {}
/** Equality engine that is used (if it exists) */
eq::EqualityEngine* d_usedEe;
/** Equality engine allocated specifically for this theory (if it exists) */
std::unique_ptr<eq::EqualityEngine> d_allocEe;
};
/** Virtual base class for equality engine managers */
class EqEngineManager
{
public:
/**
* @param te Reference to the theory engine
* @param sharedSolver The shared solver that is being used in combination
* with this equality engine manager
*/
EqEngineManager(TheoryEngine& te, SharedSolver& shs);
virtual ~EqEngineManager() {}
/**
* Initialize theories, called during TheoryEngine::finishInit after theory
* objects have been created but prior to their final initialization. This
* sets up equality engines for all theories.
*
* This method is context-independent, and is applied once during
* the lifetime of TheoryEngine (during finishInit).
*/
virtual void initializeTheories() = 0;
/**
* Get the equality engine theory information for theory with the given id.
*/
const EeTheoryInfo* getEeTheoryInfo(TheoryId tid) const;
/** Allocate equality engine that is context-dependent on c with info esi */
eq::EqualityEngine* allocateEqualityEngine(EeSetupInfo& esi,
context::Context* c);
/**
* Notify this class that we are about to terminate with a model. This method
* is for debugging only.
*
* @param incomplete Whether we are answering "unknown" instead of "sat".
*/
virtual void notifyModel(bool incomplete) {}
protected:
/** Reference to the theory engine */
TheoryEngine& d_te;
/** Reference to the shared solver */
SharedSolver& d_sharedSolver;
/** Information related to the equality engine, per theory. */
std::map<TheoryId, EeTheoryInfo> d_einfo;
};
} // namespace theory
} // namespace cvc5
#endif /* CVC5__THEORY__EE_MANAGER__H */
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