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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds |
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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 TheoryRewriteEq preprocessing pass. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__PREPROCESSING__PASSES__THEORY_REWRITE_EQ_H |
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#define CVC5__PREPROCESSING__PASSES__THEORY_REWRITE_EQ_H |
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#include "expr/node.h" |
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#include "preprocessing/preprocessing_pass.h" |
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#include "proof/trust_node.h" |
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namespace cvc5 { |
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namespace preprocessing { |
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namespace passes { |
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/** |
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* Implements the preprocessing pass for called ppRewrite on all equalities |
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* in the input. This is required to be a preprocessing pass since it is not |
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* recommended that ppRewrite is called on equalities generated in lemmas (e.g. |
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* it may interfere with equality splitting in theory combination). |
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*/ |
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class TheoryRewriteEq : public PreprocessingPass |
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{ |
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public: |
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TheoryRewriteEq(PreprocessingPassContext* preprocContext); |
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protected: |
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PreprocessingPassResult applyInternal( |
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AssertionPipeline* assertionsToPreprocess) override; |
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/** |
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* Rewrite the assertion based on rewriting equalities based on theory |
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* specific rewriting. |
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* An example is removing arithmetic equalities via: |
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* (= x y) ---> (and (>= x y) (<= x y)) |
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* Returns the trust node corresponding to the rewrite. |
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*/ |
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TrustNode rewriteAssertion(TNode assertion); |
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}; |
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} // namespace passes |
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} // namespace preprocessing |
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} // namespace cvc5 |
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#endif /* CVC5__PREPROCESSING__PASSES__THEORY_REWRITE_EQ_H */ |