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/****************************************************************************** |
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* Top contributors (to current version): |
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* Mudathir Mohamed, Andrew Reynolds, Gereon Kremer |
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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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* Inference information utility. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__BAGS__INFER_INFO_H |
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#define CVC5__THEORY__BAGS__INFER_INFO_H |
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#include <map> |
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#include <vector> |
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#include "expr/node.h" |
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#include "theory/inference_id.h" |
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#include "theory/theory_inference.h" |
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namespace cvc5 { |
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namespace theory { |
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class TheoryInferenceManager; |
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namespace bags { |
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/** |
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* An inference. This is a class to track an unprocessed call to either |
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* send a fact, lemma, or conflict that is waiting to be asserted to the |
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* equality engine or sent on the output channel. |
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*/ |
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class InferInfo : public TheoryInference |
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{ |
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public: |
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InferInfo(TheoryInferenceManager* im, InferenceId id); |
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~InferInfo() {} |
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/** Process lemma */ |
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TrustNode processLemma(LemmaProperty& p) override; |
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/** Pointer to the class used for processing this info */ |
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TheoryInferenceManager* d_im; |
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/** The conclusion */ |
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Node d_conclusion; |
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/** |
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* The premise(s) of the inference, interpreted conjunctively. These are |
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* literals that currently hold in the equality engine. |
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*/ |
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std::vector<Node> d_premises; |
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/** |
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* A map of nodes to their skolem variables introduced as a result of this |
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* inference. |
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*/ |
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std::map<Node, Node> d_skolems; |
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/** Is this infer info trivial? True if d_conc is true. */ |
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bool isTrivial() const; |
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/** |
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* Does this infer info correspond to a conflict? True if d_conc is false |
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* and it has no new premises (d_noExplain). |
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*/ |
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bool isConflict() const; |
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/** |
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* Does this infer info correspond to a "fact". A fact is an inference whose |
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* conclusion should be added as an equality or predicate to the equality |
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* engine with no new external premises (d_noExplain). |
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*/ |
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bool isFact() const; |
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}; |
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/** |
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* Writes an inference info to a stream. |
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* |
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* @param out The stream to write to |
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* @param ii The inference info to write to the stream |
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* @return The stream |
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*/ |
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std::ostream& operator<<(std::ostream& out, const InferInfo& ii); |
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} // namespace bags |
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} // namespace theory |
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} // namespace cvc5 |
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#endif /* CVC5__THEORY__BAGS__INFER_INFO_H */ |