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/********************* */
/*! \file proof_node.cpp
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 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 node utility
**/
#include "expr/proof_node.h"
#include "expr/proof_node_algorithm.h"
#include "expr/proof_node_to_sexpr.h"
namespace CVC4 {
ProofNode::ProofNode(PfRule id,
const std::vector<std::shared_ptr<ProofNode>>& children,
const std::vector<Node>& args)
{
setValue(id, children, args);
}
PfRule ProofNode::getRule() const { return d_rule; }
const std::vector<std::shared_ptr<ProofNode>>& ProofNode::getChildren() const
{
return d_children;
}
const std::vector<Node>& ProofNode::getArguments() const { return d_args; }
Node ProofNode::getResult() const { return d_proven; }
bool ProofNode::isClosed()
{
std::vector<Node> assumps;
expr::getFreeAssumptions(this, assumps);
return assumps.empty();
}
std::shared_ptr<ProofNode> ProofNode::clone() const
{
std::vector<std::shared_ptr<ProofNode>> cchildren;
for (const std::shared_ptr<ProofNode>& cp : d_children)
{
cchildren.push_back(cp->clone());
}
std::shared_ptr<ProofNode> thisc =
std::make_shared<ProofNode>(d_rule, cchildren, d_args);
thisc->d_proven = d_proven;
return thisc;
}
void ProofNode::setValue(
PfRule id,
const std::vector<std::shared_ptr<ProofNode>>& children,
const std::vector<Node>& args)
{
d_rule = id;
d_children = children;
d_args = args;
}
void ProofNode::printDebug(std::ostream& os) const
{
// convert to sexpr and print
ProofNodeToSExpr pnts;
Node ps = pnts.convertToSExpr(this);
os << ps;
}
std::ostream& operator<<(std::ostream& out, const ProofNode& pn)
{
pn.printDebug(out);
return out;
}
} // namespace CVC4
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