NodeImpl.cpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: NodeImpl.cpp,v 1.3 2002/11/04 15:04:44 tng Exp $
- */
- // This class doesn't support having any children, and implements the behavior
- // of an empty NodeList as far getChildNodes is concerned.
- // The ParentNode subclass overrides this behavior.
- #include "NodeImpl.hpp"
- #include "AttrImpl.hpp"
- #include "DOM_DOMException.hpp"
- #include "DOM_Node.hpp"
- #include "DOM_DOMImplementation.hpp"
- #include "DOMString.hpp"
- #include "DStringPool.hpp"
- #include "DocumentImpl.hpp"
- #include "NodeIDMap.hpp"
- #include "stdio.h"
- #include "TextImpl.hpp"
- XERCES_CPP_NAMESPACE_BEGIN
- static DOMString *s_xml = null;
- static DOMString *s_xmlURI = null;
- static DOMString *s_xmlns = null;
- static DOMString *s_xmlnsURI = null;
- static XMLRegisterCleanup nodeImplCleanup;
- const unsigned short NodeImpl::READONLY = 0x1<<0;
- const unsigned short NodeImpl::SYNCDATA = 0x1<<1;
- const unsigned short NodeImpl::SYNCCHILDREN = 0x1<<2;
- const unsigned short NodeImpl::OWNED = 0x1<<3;
- const unsigned short NodeImpl::FIRSTCHILD = 0x1<<4;
- const unsigned short NodeImpl::SPECIFIED = 0x1<<5;
- const unsigned short NodeImpl::IGNORABLEWS = 0x1<<6;
- const unsigned short NodeImpl::SETVALUE = 0x1<<7;
- const unsigned short NodeImpl::ID_ATTR = 0x1<<8;
- const unsigned short NodeImpl::USERDATA = 0x1<<9;
- const unsigned short NodeImpl::HASSTRING = 0x1<<10;
- NodeImpl::NodeImpl(DocumentImpl *ownerDoc)
- {
- this->flags = 0;
- // as long as we do not have any owner, ownerNode is our ownerDocument
- this->ownerNode = ownerDoc;
- this->nodeRefCount = 0;
- NodeImpl::gLiveNodeImpls++;
- NodeImpl::gTotalNodeImpls++;
- };
- // This only makes a shallow copy, cloneChildren must also be called for a
- // deep clone
- NodeImpl::NodeImpl(const NodeImpl &other) {
- this->flags = other.flags;
- this->isReadOnly(false);
- this->nodeRefCount = 0;
- NodeImpl::gLiveNodeImpls++;
- NodeImpl::gTotalNodeImpls++;
- // Need to break the association w/ original parent
- // this->ownerNode = other.getOwnerDocument(); this doesn't work???
- this->ownerNode = ((NodeImpl*)&other)->getOwnerDocument();
- this->isOwned(false);
- };
- int NodeImpl::gLiveNodeImpls = 0; // Counters for debug & tuning.
- int NodeImpl::gTotalNodeImpls= 0;
- NodeImpl::~NodeImpl() {
- if (hasUserData())
- {
- setUserData(null);
- }
- NodeImpl::gLiveNodeImpls--;
- };
- // Dynamic Cast substitute functions
- bool NodeImpl::isAttrImpl() {return false;};
- bool NodeImpl::isCDATASectionImpl() {return false;};
- bool NodeImpl::isDocumentFragmentImpl() {return false;};
- bool NodeImpl::isDocumentImpl() {return false;};
- bool NodeImpl::isDocumentTypeImpl() {return false;};
- bool NodeImpl::isElementImpl() {return false;};
- bool NodeImpl::isEntityReference() {return false;};
- bool NodeImpl::isTextImpl() {return false;};
- void NodeImpl::changed() {
- // we do not actually store this information on every node, we only
- // have a global indicator on the Document. Doing otherwise cost us too
- // much for little gain.
- getDocument()->changed();
- }
- int NodeImpl::changes()
- {
- // we do not actually store this information on every node, we only
- // have a global indicator on the Document. Doing otherwise cost us too
- // much for little gain.
- return getDocument()->changes();
- };
- NodeImpl * NodeImpl::appendChild(NodeImpl *newChild)
- {
- return insertBefore(newChild, null);
- };
- // NodeImpl::deleteIf is called when a node's reference count goes
- // to 0. It is separate function from removeRef because removeRef
- // is likely to be in-lined.
- //
- // See comments at RefCountedImpl::removeRef().
- //
- void NodeImpl::deleteIf(NodeImpl *thisNode)
- {
- if (thisNode == 0)
- return;
- if (thisNode->isOwned())
- return;
- // Delete this node. There should be no siblings, as the DOM
- // supports no node operations that would detach a node from
- // its parent while retaining siblings.
- // The target node may have children, in which case they must
- // be removed from this node before deleting this node.
- // First, if this node is an ID attribute, we need to remove it
- // from the hashtable of element IDs before removing the Attrs
- // children. This is because the Attr's children Text nodes
- // contain the attr's value, which is the hash table key.
- //
- if (thisNode->isAttrImpl() && ((AttrImpl *)thisNode->isIdAttr()))
- {
- ((AttrImpl *)thisNode)->getOwnerDocument() ->
- getNodeIDMap()->remove((AttrImpl *)thisNode);
- }
- thisNode->isReadOnly(false); // removeChild requires node not be readonly.
- NodeImpl *theNextChild;
- for (NodeImpl *child = thisNode->getFirstChild(); child != 0;
- child=theNextChild)
- {
- theNextChild = child->getNextSibling();
- thisNode->removeChild(child);
- if (child->nodeRefCount == 0)
- deleteIf(child);
- }
- delete thisNode;
- };
- NamedNodeMapImpl * NodeImpl::getAttributes() {
- return 0; // overridden in ElementImpl
- };
- NodeListImpl *NodeImpl::getChildNodes() {
- return this; // overridden in ParentNode
- };
- NodeImpl * NodeImpl::getFirstChild() {
- return 0; // overridden in ParentNode
- };
- NodeImpl * NodeImpl::getLastChild()
- {
- return 0; // overridden in ParentNode
- };
- unsigned int NodeImpl::getLength() {
- return 0; // overridden in ParentNode
- };
- NodeImpl * NodeImpl::getNextSibling() {
- return null; // overridden in ChildNode
- };
- DOMString NodeImpl::getNodeValue()
- {
- return null; // overridden in some subclasses
- };
- DocumentImpl *NodeImpl::getOwnerDocument()
- {
- // if we have an owner simply forward the request
- // otherwise ownerNode is our ownerDocument
- if (isOwned()) {
- return ownerNode->getDocument();
- } else {
- return (DocumentImpl *) ownerNode;
- }
- };
- // unlike getOwnerDocument this is not overriden by DocumentImpl to return null
- DocumentImpl *NodeImpl::getDocument()
- {
- // if we have an owner simply forward the request
- // otherwise ownerNode is our ownerDocument
- if (isOwned()) {
- return ownerNode->getDocument();
- } else {
- return (DocumentImpl *) ownerNode;
- }
- };
- void NodeImpl::setOwnerDocument(DocumentImpl *doc) {
- // if we have an owner we rely on it to have it right
- // otherwise ownerNode is our ownerDocument
- if (!isOwned()) {
- ownerNode = doc;
- }
- }
- NodeImpl * NodeImpl::getParentNode()
- {
- return null; // overridden in ChildNode
- };
- NodeImpl* NodeImpl::getPreviousSibling()
- {
- return null; // overridden in ChildNode
- };
- void *NodeImpl::getUserData()
- {
- return (hasUserData()) ? getOwnerDocument()->getUserData(this) : null;
- };
- bool NodeImpl::hasChildNodes()
- {
- return false;
- };
- NodeImpl *NodeImpl::insertBefore(NodeImpl *newChild, NodeImpl *refChild) {
- throw DOM_DOMException(DOM_DOMException::HIERARCHY_REQUEST_ERR,null);
- return 0;
- };
- NodeImpl *NodeImpl::item(unsigned int index) {
- return 0;
- };
- NodeImpl *NodeImpl::removeChild(NodeImpl *oldChild)
- {
- throw DOM_DOMException(DOM_DOMException::NOT_FOUND_ERR, null);
- return 0;
- };
- NodeImpl *NodeImpl::replaceChild(NodeImpl *newChild, NodeImpl *oldChild)
- {
- throw DOM_DOMException(DOM_DOMException::HIERARCHY_REQUEST_ERR,null);
- return 0;
- };
- void NodeImpl::referenced()
- {
- RefCountedImpl::addRef(this->getOwnerDocument());
- };
- //
- // unreferenced will be called whenever the refernce count on
- // this node goes from 1 to 0. This node will only be
- // directly deleted here (by deleteIf) if it is outside
- // of the document tree.
- //
- void NodeImpl::unreferenced()
- {
- DocumentImpl *doc = this->getOwnerDocument();
- deleteIf(this); // This gets nodes outside of the document -
- // deleteIf() deletes only if the parent
- // node is null.
- // If this was the last external reference within the document,
- // the entire document will be deleted as well.
- RefCountedImpl::removeRef(doc);
- };
- void NodeImpl::setNodeValue(const DOMString &val)
- {
- // Default behavior is to do nothing, overridden in some subclasses
- };
- void NodeImpl::setReadOnly(bool readOnl, bool deep)
- {
- this->isReadOnly(readOnl);
- // by default we do not have children, so deep is meaningless
- // this is overridden by ParentNode
- }
- void NodeImpl::setUserData(void * val)
- {
- getOwnerDocument()->setUserData(this, val);
- if (val)
- hasUserData(true);
- else
- hasUserData(false);
- };
- DOMString NodeImpl::toString()
- {
- return DOMString("[")+getNodeName()+": "+getNodeValue()+"]";
- // return getNodeName();
- };
- //Introduced in DOM Level 2
- void NodeImpl::normalize()
- {
- // does nothing by default, overridden by subclasses
- };
- bool NodeImpl::isSupported(const DOMString &feature, const DOMString &version)
- {
- return DOM_DOMImplementation::getImplementation().hasFeature(feature, version);
- }
- DOMString NodeImpl::getNamespaceURI()
- {
- return 0;
- }
- DOMString NodeImpl::getPrefix()
- {
- return 0;
- }
- DOMString NodeImpl::getLocalName()
- {
- return 0;
- }
- void NodeImpl::setPrefix(const DOMString &fPrefix)
- {
- throw DOM_DOMException(DOM_DOMException::NAMESPACE_ERR,null);
- }
- bool NodeImpl::hasAttributes() {
- return 0; // overridden in ElementImpl
- };
- DOMString NodeImpl::getXmlnsString() {
- return DStringPool::getStaticString("xmlns"
- , &s_xmlns
- , reinitNodeImpl
- , nodeImplCleanup
- );
- }
- DOMString NodeImpl::getXmlnsURIString() {
- return DStringPool::getStaticString("http://www.w3.org/2000/xmlns/"
- , &s_xmlnsURI
- , reinitNodeImpl
- , nodeImplCleanup
- );
- }
- DOMString NodeImpl::getXmlString() {
- return DStringPool::getStaticString("xml"
- , &s_xml
- , reinitNodeImpl
- , nodeImplCleanup
- );
- }
- DOMString NodeImpl::getXmlURIString() {
- return DStringPool::getStaticString("http://www.w3.org/XML/1998/namespace"
- , &s_xmlURI
- , reinitNodeImpl
- , nodeImplCleanup
- );
- }
- //Return a URI mapped from the given prefix and namespaceURI as below
- // prefix namespaceURI output
- //---------------------------------------------------
- // "xml" xmlURI xmlURI
- // "xml" otherwise NAMESPACE_ERR
- // "xmlns" xmlnsURI xmlnsURI (nType = ATTRIBUTE_NODE only)
- // "xmlns" otherwise NAMESPACE_ERR (nType = ATTRIBUTE_NODE only)
- // != null null or "" NAMESPACE_ERR
- // else any namesapceURI
- const DOMString& NodeImpl::mapPrefix(const DOMString &prefix,
- const DOMString &namespaceURI, short nType)
- {
- DOMString xml = DStringPool::getStaticString("xml"
- , &s_xml
- , reinitNodeImpl
- , nodeImplCleanup
- );
- DOMString xmlURI = DStringPool::getStaticString("http://www.w3.org/XML/1998/namespace"
- , &s_xmlURI
- , reinitNodeImpl
- , nodeImplCleanup
- );
- DOMString xmlns = DStringPool::getStaticString("xmlns"
- , &s_xmlns
- , reinitNodeImpl
- , nodeImplCleanup
- );
- DOMString xmlnsURI = DStringPool::getStaticString("http://www.w3.org/2000/xmlns/"
- , &s_xmlnsURI
- , reinitNodeImpl
- , nodeImplCleanup
- );
- if (prefix == null)
- return namespaceURI;
- if (prefix.equals(xml)) {
- if (namespaceURI.equals(xmlURI))
- return *s_xmlURI;
- throw DOM_DOMException(DOM_DOMException::NAMESPACE_ERR, null);
- } else if (nType == DOM_Node::ATTRIBUTE_NODE && prefix.equals(xmlns)) {
- if (namespaceURI.equals(xmlnsURI))
- return *s_xmlnsURI;
- throw DOM_DOMException(DOM_DOMException::NAMESPACE_ERR, null);
- } else if (namespaceURI == null || namespaceURI.length() == 0) {
- throw DOM_DOMException(DOM_DOMException::NAMESPACE_ERR, null);
- } else
- return namespaceURI;
- return namespaceURI;
- }
- // -----------------------------------------------------------------------
- // Notification that lazy data has been deleted
- // -----------------------------------------------------------------------
- void NodeImpl::reinitNodeImpl() {
- delete s_xml;
- s_xml = 0;
- delete s_xmlURI;
- s_xmlURI = 0;
- delete s_xmlns;
- s_xmlns = 0;
- delete s_xmlnsURI;
- s_xmlnsURI = 0;
- }
- XERCES_CPP_NAMESPACE_END