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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, 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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* Implementation of sygus basic enumerator. |
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*/ |
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#include "theory/quantifiers/sygus/sygus_enumerator_basic.h" |
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#include "options/datatypes_options.h" |
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#include "theory/rewriter.h" |
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using namespace cvc5::kind; |
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using namespace std; |
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namespace cvc5 { |
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namespace theory { |
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namespace quantifiers { |
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EnumValGeneratorBasic::EnumValGeneratorBasic(TermDbSygus* tds, TypeNode tn) |
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: d_tds(tds), d_te(tn) |
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{ |
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} |
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bool EnumValGeneratorBasic::increment() |
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{ |
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++d_te; |
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if (d_te.isFinished()) |
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{ |
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d_currTerm = Node::null(); |
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return false; |
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} |
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d_currTerm = *d_te; |
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if (options::sygusSymBreakDynamic()) |
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{ |
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Node nextb = d_tds->sygusToBuiltin(d_currTerm); |
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nextb = Rewriter::callExtendedRewrite(nextb); |
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if (d_cache.find(nextb) == d_cache.end()) |
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{ |
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d_cache.insert(nextb); |
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// only return the current term if not unique |
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} |
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else |
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{ |
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d_currTerm = Node::null(); |
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} |
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} |
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return true; |
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} |
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} // namespace quantifiers |
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} // namespace theory |
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} // namespace cvc5 |