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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, Gereon Kremer, Aina Niemetz |
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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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* Datatypes inference. |
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*/ |
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#include "theory/datatypes/inference.h" |
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#include "expr/dtype.h" |
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#include "options/datatypes_options.h" |
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#include "theory/datatypes/inference_manager.h" |
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#include "theory/theory.h" |
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using namespace cvc5::kind; |
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namespace cvc5 { |
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namespace theory { |
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namespace datatypes { |
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360081 |
DatatypesInference::DatatypesInference(InferenceManager* im, |
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Node conc, |
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Node exp, |
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InferenceId i) |
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: SimpleTheoryInternalFact(i, conc, exp, nullptr), d_im(im) |
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{ |
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// false is not a valid explanation |
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Assert(d_exp.isNull() || !d_exp.isConst() || d_exp.getConst<bool>()); |
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} |
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bool DatatypesInference::mustCommunicateFact(Node n, Node exp) |
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{ |
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Trace("dt-lemma-debug") << "Compute for " << exp << " => " << n << std::endl; |
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// Force lemmas if option is set |
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if (options::dtInferAsLemmas()) |
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{ |
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Trace("dt-lemma-debug") |
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<< "Communicate " << n << " due to option" << std::endl; |
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return true; |
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} |
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// Note that equalities due to instantiate are forced as lemmas if |
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// necessary as they are created. This ensures that terms are shared with |
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// external theories when necessary. We send the lemma here only if the |
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// conclusion has kind LEQ (for datatypes size) or OR. Notice that |
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// all equalities are kept internal, apart from those forced as lemmas |
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// via instantiate. |
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else if (n.getKind() == LEQ || n.getKind() == OR) |
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{ |
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Trace("dt-lemma-debug") |
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<< "Communicate " << n << " due to kind" << std::endl; |
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return true; |
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} |
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Trace("dt-lemma-debug") << "Do not communicate " << n << std::endl; |
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return false; |
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} |
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TrustNode DatatypesInference::processLemma(LemmaProperty& p) |
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{ |
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// we don't pass lemma property p currently, as it is always default |
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return d_im->processDtLemma(d_conc, d_exp, getId()); |
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} |
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Node DatatypesInference::processFact(std::vector<Node>& exp, |
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ProofGenerator*& pg) |
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{ |
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// add to the explanation vector if applicable (when non-trivial) |
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if (!d_exp.isNull() && !d_exp.isConst()) |
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{ |
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exp.push_back(d_exp); |
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} |
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return d_im->processDtFact(d_conc, d_exp, getId(), pg); |
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} |
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} // namespace datatypes |
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} // namespace theory |
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} // namespace cvc5 |