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/****************************************************************************** |
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* Top contributors (to current version): |
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* Morgan Deters, Tim King, Yoni Zohar |
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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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* Reference-counted encapsulation of a pointer to node information. |
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*/ |
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#include "expr/node.h" |
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#include <cstring> |
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#include <iostream> |
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#include <sstream> |
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#include "base/exception.h" |
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#include "base/output.h" |
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#include "expr/attribute.h" |
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#include "expr/type_checker.h" |
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using namespace std; |
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namespace cvc5 { |
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TypeCheckingExceptionPrivate::TypeCheckingExceptionPrivate(TNode node, |
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std::string message) |
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: Exception(message), d_node(new Node(node)) |
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{ |
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#ifdef CVC5_DEBUG |
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std::stringstream ss; |
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LastExceptionBuffer* current = LastExceptionBuffer::getCurrent(); |
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if(current != NULL){ |
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// Since this node is malformed, we cannot use toString(). |
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// Instead, we print the kind and the children. |
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ss << "node kind: " << node.getKind() << ". children: "; |
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int i = 0; |
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for (const TNode& child : node) |
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{ |
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ss << "child[" << i << "]: " << child << ". "; |
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i++; |
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} |
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string ssstring = ss.str(); |
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current->setContents(ssstring.c_str()); |
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} |
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#endif /* CVC5_DEBUG */ |
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} |
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TypeCheckingExceptionPrivate::~TypeCheckingExceptionPrivate() { delete d_node; } |
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void TypeCheckingExceptionPrivate::toStream(std::ostream& os) const |
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{ |
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os << "Error during type checking: " << d_msg << std::endl << *d_node << endl << "The ill-typed expression: " << *d_node; |
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} |
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NodeTemplate<true> TypeCheckingExceptionPrivate::getNode() const |
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{ |
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return *d_node; |
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} |
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UnknownTypeException::UnknownTypeException(TNode n) |
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: TypeCheckingExceptionPrivate( |
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n, |
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"this expression contains an element of unknown type (such as an " |
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"abstract value);" |
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" its type cannot be computed until it is substituted away") |
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{ |
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} |
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/** Is this node constant? (and has that been computed yet?) */ |
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struct IsConstTag { }; |
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struct IsConstComputedTag { }; |
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typedef expr::Attribute<IsConstTag, bool> IsConstAttr; |
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typedef expr::Attribute<IsConstComputedTag, bool> IsConstComputedAttr; |
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template <bool ref_count> |
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bool NodeTemplate<ref_count>::isConst() const { |
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assertTNodeNotExpired(); |
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Debug("isConst") << "Node::isConst() for: " << *this << std::endl; |
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if(isNull()) { |
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return false; |
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} |
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switch(getMetaKind()) { |
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case kind::metakind::CONSTANT: |
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Debug("isConst") << "Node::isConst() returning true, it's a CONSTANT" << std::endl; |
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return true; |
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case kind::metakind::VARIABLE: |
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Debug("isConst") << "Node::isConst() returning false, it's a VARIABLE" << std::endl; |
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return false; |
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default: |
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if(getAttribute(IsConstComputedAttr())) { |
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bool bval = getAttribute(IsConstAttr()); |
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Debug("isConst") << "Node::isConst() returning cached value " << (bval ? "true" : "false") << " for: " << *this << std::endl; |
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return bval; |
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} else { |
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bool bval = expr::TypeChecker::computeIsConst(NodeManager::currentNM(), *this); |
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Debug("isConst") << "Node::isConst() computed value " << (bval ? "true" : "false") << " for: " << *this << std::endl; |
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const_cast< NodeTemplate<ref_count>* >(this)->setAttribute(IsConstAttr(), bval); |
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const_cast< NodeTemplate<ref_count>* >(this)->setAttribute(IsConstComputedAttr(), true); |
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return bval; |
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} |
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} |
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} |
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template bool NodeTemplate<true>::isConst() const; |
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template bool NodeTemplate<false>::isConst() const; |
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} // namespace cvc5 |
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namespace std { |
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size_t hash<cvc5::Node>::operator()(const cvc5::Node& node) const |
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{ |
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return node.getId(); |
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} |
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size_t hash<cvc5::TNode>::operator()(const cvc5::TNode& node) const |
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{ |
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return node.getId(); |
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} |
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} // namespace std |