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/********************* */
/*! \file instantiation_engine.h
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds, Mathias Preiner, Morgan Deters
** 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 Instantiation Engine classes
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__QUANTIFIERS__INSTANTIATION_ENGINE_H
#define CVC4__THEORY__QUANTIFIERS__INSTANTIATION_ENGINE_H
#include <vector>
#include "theory/quantifiers/ematching/inst_strategy.h"
#include "theory/quantifiers/ematching/trigger_database.h"
#include "theory/quantifiers/quant_module.h"
#include "theory/quantifiers/quant_relevance.h"
namespace cvc5 {
namespace theory {
namespace quantifiers {
class InstStrategyUserPatterns;
class InstStrategyAutoGenTriggers;
class InstantiationEngine : public QuantifiersModule {
public:
InstantiationEngine(QuantifiersState& qs,
QuantifiersInferenceManager& qim,
QuantifiersRegistry& qr,
TermRegistry& tr);
~InstantiationEngine();
void presolve() override;
bool needsCheck(Theory::Effort e) override;
void reset_round(Theory::Effort e) override;
void check(Theory::Effort e, QEffort quant_e) override;
bool checkCompleteFor(Node q) override;
void checkOwnership(Node q) override;
void registerQuantifier(Node q) override;
Node explain(TNode n) { return Node::null(); }
/** add user pattern */
void addUserPattern(Node q, Node pat);
void addUserNoPattern(Node q, Node pat);
/** Identify this module */
std::string identify() const override { return "InstEngine"; }
private:
/** is the engine incomplete for this quantifier */
bool isIncomplete(Node q);
/** do instantiation round */
void doInstantiationRound(Theory::Effort effort);
/** Return true if this module should process quantified formula q */
bool shouldProcess(Node q);
/** instantiation strategies */
std::vector<InstStrategy*> d_instStrategies;
/** user-pattern instantiation strategy */
std::unique_ptr<InstStrategyUserPatterns> d_isup;
/** auto gen triggers; only kept for destructor cleanup */
std::unique_ptr<InstStrategyAutoGenTriggers> d_i_ag;
/** current processing quantified formulas */
std::vector<Node> d_quants;
/** all triggers will be stored in this database */
inst::TriggerDatabase d_trdb;
/** for computing relevance of quantifiers */
std::unique_ptr<QuantRelevance> d_quant_rel;
}; /* class InstantiationEngine */
} // namespace quantifiers
} // namespace theory
} // namespace cvc5
#endif /* CVC4__THEORY__QUANTIFIERS__INSTANTIATION_ENGINE_H */
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