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/****************************************************************************** |
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* Top contributors (to current version): |
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* Yoni Zohar, Gereon Kremer, 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 static learning preprocessing pass. |
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*/ |
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#include "preprocessing/passes/static_learning.h" |
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#include <string> |
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#include "expr/node.h" |
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#include "preprocessing/assertion_pipeline.h" |
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#include "preprocessing/preprocessing_pass_context.h" |
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#include "theory/rewriter.h" |
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#include "theory/theory_engine.h" |
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namespace cvc5 { |
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namespace preprocessing { |
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namespace passes { |
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StaticLearning::StaticLearning(PreprocessingPassContext* preprocContext) |
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: PreprocessingPass(preprocContext, "static-learning"){}; |
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PreprocessingPassResult StaticLearning::applyInternal( |
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AssertionPipeline* assertionsToPreprocess) |
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{ |
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d_preprocContext->spendResource(Resource::PreprocessStep); |
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for (unsigned i = 0; i < assertionsToPreprocess->size(); ++i) |
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{ |
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NodeBuilder learned(kind::AND); |
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learned << (*assertionsToPreprocess)[i]; |
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d_preprocContext->getTheoryEngine()->ppStaticLearn( |
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(*assertionsToPreprocess)[i], learned); |
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if (learned.getNumChildren() == 1) |
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{ |
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learned.clear(); |
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} |
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else |
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{ |
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assertionsToPreprocess->replace( |
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i, theory::Rewriter::rewrite(learned.constructNode())); |
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} |
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} |
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return PreprocessingPassResult::NO_CONFLICT; |
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} |
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} // namespace passes |
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} // namespace preprocessing |
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} // namespace cvc5 |