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/********************* */
/*! \file proof_generator.cpp
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2019 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 Implementation of proof generator utility
**/
#include "expr/proof_generator.h"
#include "expr/proof.h"
namespace CVC4 {
ProofGenerator::ProofGenerator() {}
ProofGenerator::~ProofGenerator() {}
std::shared_ptr<ProofNode> ProofGenerator::getProofFor(Node f)
{
Unreachable() << "ProofGenerator::getProofFor: " << identify()
<< " has no implementation" << std::endl;
return nullptr;
}
bool ProofGenerator::addProofTo(Node f, CDProof* pf, CDPOverwrite opolicy)
{
Trace("pfgen") << "ProofGenerator::addProofTo: " << f << "..." << std::endl;
Assert(pf != nullptr);
// plug in the proof provided by the generator, if it exists
std::shared_ptr<ProofNode> apf = getProofFor(f);
if (apf != nullptr)
{
if (Trace.isOn("pfgen"))
{
std::stringstream ss;
apf->printDebug(ss);
Trace("pfgen") << "...got proof " << ss.str() << std::endl;
}
// Add the proof, without deep copying.
if (pf->addProof(apf, opolicy, false))
{
Trace("pfgen") << "...success!" << std::endl;
return true;
}
Trace("pfgen") << "...failed to add proof" << std::endl;
}
else
{
Trace("pfgen") << "...failed, no proof" << std::endl;
Assert(false) << "Failed to get proof from generator for fact " << f;
}
return false;
}
PRefProofGenerator::PRefProofGenerator(CDProof* cd) : d_proof(cd) {}
PRefProofGenerator::~PRefProofGenerator() {}
std::shared_ptr<ProofNode> PRefProofGenerator::getProofFor(Node f)
{
Trace("pfgen") << "PRefProofGenerator::getProofFor: " << f << std::endl;
return d_proof->mkProof(f);
}
std::string PRefProofGenerator::identify() const
{
return "PRefProofGenerator";
}
} // namespace CVC4
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