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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, Tim King, Haniel Barbosa |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* The theory engine output channel. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__ENGINE_OUTPUT_CHANNEL_H |
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#define CVC5__THEORY__ENGINE_OUTPUT_CHANNEL_H |
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#include "expr/node.h" |
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#include "theory/output_channel.h" |
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#include "theory/theory_id.h" |
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#include "util/statistics_stats.h" |
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namespace cvc5 { |
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class TheoryEngine; |
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namespace theory { |
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class Theory; |
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/** |
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* An output channel for Theory that passes messages back to a TheoryEngine |
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* for a given Theory. |
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* |
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* Notice that it has interfaces trustedConflict and trustedLemma which are |
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* used for ensuring that proof generators are associated with the lemmas |
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* and conflicts sent on this output channel. |
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*/ |
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class EngineOutputChannel : public theory::OutputChannel |
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{ |
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friend class TheoryEngine; |
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public: |
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EngineOutputChannel(TheoryEngine* engine, theory::TheoryId theory); |
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void safePoint(Resource r) override; |
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void conflict(TNode conflictNode) override; |
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bool propagate(TNode literal) override; |
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void lemma(TNode lemma, LemmaProperty p = LemmaProperty::NONE) override; |
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void demandRestart() override; |
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void requirePhase(TNode n, bool phase) override; |
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void setIncomplete(IncompleteId id) override; |
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void spendResource(Resource r) override; |
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void handleUserAttribute(const char* attr, theory::Theory* t) override; |
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/** |
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* Let pconf be the pair (Node conf, ProofGenerator * pfg). This method |
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* sends conf on the output channel of this class whose proof can be generated |
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* by the generator pfg. Apart from pfg, the interface for this method is |
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* the same as calling OutputChannel::lemma on conf. |
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*/ |
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void trustedConflict(TrustNode pconf) override; |
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/** |
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* Let plem be the pair (Node lem, ProofGenerator * pfg). |
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* Send lem on the output channel of this class whose proof can be generated |
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* by the generator pfg. Apart from pfg, the interface for this method is |
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* the same as calling OutputChannel::lemma on lem. |
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*/ |
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void trustedLemma(TrustNode plem, |
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LemmaProperty p = LemmaProperty::NONE) override; |
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protected: |
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/** |
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* Statistics for a particular theory. |
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*/ |
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class Statistics |
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{ |
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public: |
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Statistics(theory::TheoryId theory); |
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/** Number of calls to conflict, propagate, lemma, requirePhase, |
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* restartDemands */ |
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IntStat conflicts, propagations, lemmas, requirePhase, restartDemands, |
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trustedConflicts, trustedLemmas; |
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}; |
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/** The theory engine we're communicating with. */ |
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TheoryEngine* d_engine; |
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/** The statistics of the theory interractions. */ |
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Statistics d_statistics; |
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/** The theory owning this channel. */ |
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theory::TheoryId d_theory; |
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/** A helper function for registering lemma recipes with the proof engine */ |
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void registerLemmaRecipe(Node lemma, |
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Node originalLemma, |
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bool preprocess, |
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theory::TheoryId theoryId); |
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}; |
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} // namespace theory |
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} // namespace cvc5 |
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#endif /* CVC5__THEORY__ENGINE_OUTPUT_CHANNEL_H */ |