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/********************* */
/*! \file apply_substs.cpp
** \verbatim
** Top contributors (to current version):
** Aina Niemetz
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Apply substitutions preprocessing pass.
**
** Apply top level substitutions to assertions, rewrite, and store back into
** assertions.
**/
#include "preprocessing/passes/apply_substs.h"
#include "context/cdo.h"
#include "theory/rewriter.h"
#include "theory/substitutions.h"
namespace CVC4 {
namespace preprocessing {
namespace passes {
ApplySubsts::ApplySubsts(PreprocessingPassContext* preprocContext)
: PreprocessingPass(preprocContext, "apply-substs")
{
}
PreprocessingPassResult ApplySubsts::applyInternal(
AssertionPipeline* assertionsToPreprocess)
{
if (!options::unsatCores())
{
Chat() << "applying substitutions..." << std::endl;
Trace("apply-substs") << "SmtEnginePrivate::processAssertions(): "
<< "applying substitutions" << std::endl;
// TODO(#1255): Substitutions in incremental mode should be managed with a
// proper data structure.
// When solving incrementally, all substitutions are piled into the
// assertion at d_substitutionsIndex: we don't want to apply substitutions
// to this assertion or information will be lost.
unsigned substs_index = d_preprocContext->getSubstitutionsIndex();
theory::SubstitutionMap& substMap =
d_preprocContext->getTopLevelSubstitutions();
unsigned size = assertionsToPreprocess->size();
unsigned substitutionAssertion = substs_index > 0 ? substs_index : size;
for (unsigned i = 0; i < size; ++i)
{
if (i == substitutionAssertion)
{
continue;
}
Trace("apply-substs") << "applying to " << (*assertionsToPreprocess)[i]
<< std::endl;
d_preprocContext->spendResource(options::preprocessStep());
assertionsToPreprocess->replace(i,
theory::Rewriter::rewrite(substMap.apply(
(*assertionsToPreprocess)[i])));
Trace("apply-substs") << " got " << (*assertionsToPreprocess)[i]
<< std::endl;
}
}
return PreprocessingPassResult::NO_CONFLICT;
}
} // namespace passes
} // namespace preprocessing
} // namespace CVC4
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