[188] | 1 | #ifndef DOMDocumentImpl_HEADER_GUARD_
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| 2 | #define DOMDocumentImpl_HEADER_GUARD_
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| 3 |
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| 4 | /*
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| 5 | * The Apache Software License, Version 1.1
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| 6 | *
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| 7 | * Copyright (c) 2001-2003 The Apache Software Foundation. All rights
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| 8 | * reserved.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | *
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| 14 | * 1. Redistributions of source code must retain the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer.
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| 16 | *
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| 17 | * 2. Redistributions in binary form must reproduce the above copyright
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| 18 | * notice, this list of conditions and the following disclaimer in
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| 19 | * the documentation and/or other materials provided with the
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| 20 | * distribution.
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| 21 | *
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| 22 | * 3. The end-user documentation included with the redistribution,
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| 23 | * if any, must include the following acknowledgment:
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| 24 | * "This product includes software developed by the
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| 25 | * Apache Software Foundation (http://www.apache.org/)."
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| 26 | * Alternately, this acknowledgment may appear in the software itself,
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| 27 | * if and wherever such third-party acknowledgments normally appear.
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| 28 | *
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| 29 | * 4. The names "Xerces" and "Apache Software Foundation" must
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| 30 | * not be used to endorse or promote products derived from this
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| 31 | * software without prior written permission. For written
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| 32 | * permission, please contact apache\@apache.org.
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| 33 | *
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| 34 | * 5. Products derived from this software may not be called "Apache",
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| 35 | * nor may "Apache" appear in their name, without prior written
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| 36 | * permission of the Apache Software Foundation.
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| 37 | *
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| 38 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 39 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 40 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 41 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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| 42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 44 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 45 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 46 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 47 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 48 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 49 | * SUCH DAMAGE.
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| 50 | * ====================================================================
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| 51 | *
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| 52 | * This software consists of voluntary contributions made by many
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| 53 | * individuals on behalf of the Apache Software Foundation, and was
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| 54 | * originally based on software copyright (c) 2001, International
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| 55 | * Business Machines, Inc., http://www.ibm.com . For more information
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| 56 | * on the Apache Software Foundation, please see
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| 57 | * <http://www.apache.org/>.
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| 58 | */
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| 59 |
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| 60 | /*
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| 61 | * $Id: DOMDocumentImpl.hpp,v 1.23 2004/01/29 11:44:26 cargilld Exp $
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| 62 | */
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| 63 |
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| 64 | //
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| 65 | // This file is part of the internal implementation of the C++ XML DOM.
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| 66 | // It should NOT be included or used directly by application programs.
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| 67 | //
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| 68 | // Applications should include the file <xercesc/dom/DOM.hpp> for the entire
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| 69 | // DOM API, or xercesc/dom/DOM*.hpp for individual DOM classes, where the class
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| 70 | // name is substituded for the *.
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| 71 | //
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| 72 |
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| 73 | #include <xercesc/util/RefArrayOf.hpp>
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| 74 | #include <xercesc/util/RefStackOf.hpp>
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| 75 | #include <xercesc/util/RefHashTableOf.hpp>
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| 76 | #include <xercesc/util/KeyRefPair.hpp>
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| 77 | #include <xercesc/dom/DOMDocument.hpp>
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| 78 | #include <xercesc/dom/DOMUserDataHandler.hpp>
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| 79 | #include "DOMNodeImpl.hpp"
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| 80 | #include "DOMParentNode.hpp"
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| 81 | #include "DOMDeepNodeListPool.hpp"
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| 82 |
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| 83 | XERCES_CPP_NAMESPACE_BEGIN
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| 84 |
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| 85 |
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| 86 | class DOMAttrImpl;
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| 87 | class DOMCDATASectionImpl;
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| 88 | class DOMCommentImpl;
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| 89 | class DOMConfiguration;
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| 90 | class DOMDeepNodeListImpl;
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| 91 | class DOMDocumentFragmentImpl;
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| 92 | class DOMDocumentTypeImpl;
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| 93 | class DOMElementImpl;
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| 94 | class DOMEntityImpl;
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| 95 | class DOMEntityReferenceImpl;
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| 96 | class DOMNotationImpl;
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| 97 | class DOMProcessingInstructionImpl;
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| 98 | class DOMTextImpl;
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| 99 | class DOMNodeIteratorImpl;
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| 100 | class DOMNormalizer;
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| 101 | class DOMTreeWalkerImpl;
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| 102 | class DOMNodeFilter;
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| 103 | class DOMNodeFilterImpl;
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| 104 | class DOMImplementation;
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| 105 | class DOMNodeIDMap;
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| 106 | class DOMRangeImpl;
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| 107 | class DOMStringPool;
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| 108 | class DOMBuffer;
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| 109 | class MemoryManager;
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| 110 | class XPathNSResolver;
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| 111 | class XPathExpression;
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| 112 |
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| 113 | typedef RefVectorOf<DOMRangeImpl> Ranges;
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| 114 | typedef RefVectorOf<DOMNodeIteratorImpl> NodeIterators;
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| 115 | typedef KeyRefPair<void, DOMUserDataHandler> DOMUserDataRecord;
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| 116 | typedef RefHashTableOf<DOMUserDataRecord> DOMNodeUserDataTable;
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| 117 | typedef RefStackOf<DOMNode> DOMNodePtr;
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| 118 |
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| 119 | class CDOM_EXPORT DOMDocumentImpl: public XMemory, public DOMDocument {
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| 120 | public:
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| 121 | // -----------------------------------------------------------------------
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| 122 | // data types
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| 123 | // -----------------------------------------------------------------------
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| 124 | enum NodeObjectType {
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| 125 | ATTR_OBJECT = 0,
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| 126 | ATTR_NS_OBJECT = 1,
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| 127 | CDATA_SECTION_OBJECT = 2,
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| 128 | COMMENT_OBJECT = 3,
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| 129 | DOCUMENT_FRAGMENT_OBJECT = 4,
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| 130 | DOCUMENT_TYPE_OBJECT = 5,
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| 131 | ELEMENT_OBJECT = 6,
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| 132 | ELEMENT_NS_OBJECT = 7,
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| 133 | ENTITY_OBJECT = 8,
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| 134 | ENTITY_REFERENCE_OBJECT = 9,
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| 135 | NOTATION_OBJECT = 10,
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| 136 | PROCESSING_INSTRUCTION_OBJECT = 11,
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| 137 | TEXT_OBJECT = 12
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| 138 | };
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| 139 |
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| 140 |
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| 141 | // -----------------------------------------------------------------------
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| 142 | // data
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| 143 | // -----------------------------------------------------------------------
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| 144 | DOMNodeImpl fNode; // Implements common node functionality.
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| 145 | DOMParentNode fParent; // Implements common parent node functionality
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| 146 | DOMNodeIDMap* fNodeIDMap; // for use by GetElementsById().
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| 147 |
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| 148 | public:
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| 149 | DOMDocumentImpl(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 150 | DOMDocumentImpl(const XMLCh* namespaceURI, //DOM Level 2
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| 151 | const XMLCh* qualifiedName,
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| 152 | DOMDocumentType* doctype,
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| 153 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 154 | virtual ~DOMDocumentImpl();
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| 155 |
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| 156 | void setDocumentType(DOMDocumentType *doctype);
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| 157 |
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| 158 | // Add all functions that are pure virutal in DOMNODE
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| 159 | DOMNODE_FUNCTIONS;
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| 160 |
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| 161 | // Add all functions that are pure virutal in DOMDocument
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| 162 | virtual DOMAttr* createAttribute(const XMLCh *name);
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| 163 | virtual DOMCDATASection* createCDATASection(const XMLCh *data);
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| 164 | virtual DOMComment* createComment(const XMLCh *data);
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| 165 | virtual DOMDocumentFragment* createDocumentFragment();
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| 166 | virtual DOMDocumentType* createDocumentType(const XMLCh *name);
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| 167 | virtual DOMDocumentType* createDocumentType(const XMLCh *qName,
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| 168 | const XMLCh *publicId,
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| 169 | const XMLCh *systemId);
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| 170 | virtual DOMElement* createElement(const XMLCh * tagName);
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| 171 | virtual DOMElement* createElementNoCheck(const XMLCh *tagName);
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| 172 | virtual DOMEntity* createEntity(const XMLCh * name);
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| 173 | virtual DOMEntityReference* createEntityReference(const XMLCh * name);
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| 174 | virtual DOMNotation* createNotation(const XMLCh * name);
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| 175 | virtual DOMProcessingInstruction* createProcessingInstruction(const XMLCh * target, const XMLCh * data);
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| 176 | virtual DOMText* createTextNode(const XMLCh * data);
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| 177 | virtual DOMDocumentType* getDoctype() const;
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| 178 | virtual DOMElement* getDocumentElement() const;
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| 179 | virtual DOMNodeList* getElementsByTagName(const XMLCh * tagname) const;
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| 180 | virtual DOMImplementation* getImplementation() const;
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| 181 | bool isXMLName(const XMLCh * s);
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| 182 | virtual DOMNodeIterator* createNodeIterator(DOMNode *root,
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| 183 | unsigned long whatToShow,
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| 184 | DOMNodeFilter* filter,
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| 185 | bool entityReferenceExpansion);
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| 186 | virtual DOMTreeWalker* createTreeWalker(DOMNode *root,
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| 187 | unsigned long whatToShow,
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| 188 | DOMNodeFilter* filter,
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| 189 | bool entityReferenceExpansion);
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| 190 |
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| 191 |
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| 192 | virtual DOMRange* createRange();
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| 193 | virtual Ranges* getRanges() const; //non-standard api
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| 194 | virtual NodeIterators* getNodeIterators() const; //non-standard api
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| 195 | virtual void removeRange(DOMRangeImpl* range); //non-standard api
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| 196 | virtual void removeNodeIterator(DOMNodeIteratorImpl* nodeIterator); //non-standard api
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| 197 |
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| 198 | virtual const DOMXPathExpression* createExpression(const XMLCh *expression, const DOMXPathNSResolver *resolver);
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| 199 | virtual const DOMXPathNSResolver* createNSResolver(DOMNode *nodeResolver);
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| 200 | virtual void* evaluate(const XMLCh *expression, DOMNode *contextNode, const DOMXPathNSResolver *resolver,
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| 201 | unsigned short type, void* result);
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| 202 |
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| 203 |
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| 204 | // Extension to be called by the Parser
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| 205 | DOMEntityReference* createEntityReferenceByParser(const XMLCh * name);
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| 206 |
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| 207 |
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| 208 | //
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| 209 | // Functions to keep track of document mutations, so that node list chached
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| 210 | // information can be invalidated. One global changes counter per document.
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| 211 | //
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| 212 | virtual void changed();
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| 213 | virtual int changes() const;
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| 214 |
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| 215 | /**
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| 216 | * Sets whether the DOM implementation performs error checking
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| 217 | * upon operations. Turning off error checking only affects
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| 218 | * the following DOM checks:
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| 219 | * <ul>
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| 220 | * <li>Checking strings to make sure that all characters are
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| 221 | * legal XML characters
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| 222 | * <li>Hierarchy checking such as allowed children, checks for
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| 223 | * cycles, etc.
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| 224 | * </ul>
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| 225 | * <p>
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| 226 | * Turning off error checking does <em>not</em> turn off the
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| 227 | * following checks:
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| 228 | * <ul>
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| 229 | * <li>Read only checks
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| 230 | * <li>Checks related to DOM events
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| 231 | * </ul>
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| 232 | */
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| 233 | inline void setErrorChecking(bool check) {
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| 234 | errorChecking = check;
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| 235 | }
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| 236 |
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| 237 | /**
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| 238 | * Returns true if the DOM implementation performs error checking.
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| 239 | */
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| 240 | inline bool getErrorChecking() const {
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| 241 | return errorChecking;
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| 242 | }
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| 243 |
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| 244 | //Introduced in DOM Level 2
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| 245 | virtual DOMNode* importNode(DOMNode *source, bool deep);
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| 246 | virtual DOMElement* createElementNS(const XMLCh *namespaceURI,
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| 247 | const XMLCh *qualifiedName);
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| 248 | virtual DOMElement* createElementNS(const XMLCh *namespaceURI,
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| 249 | const XMLCh *qualifiedName,
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| 250 | const XMLSSize_t lineNo,
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| 251 | const XMLSSize_t columnNo);
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| 252 | virtual DOMAttr* createAttributeNS(const XMLCh *namespaceURI,
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| 253 | const XMLCh *qualifiedName);
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| 254 | virtual DOMNodeList* getElementsByTagNameNS(const XMLCh *namespaceURI,
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| 255 | const XMLCh *localName) const;
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| 256 | virtual DOMElement* getElementById(const XMLCh *elementId) const;
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| 257 |
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| 258 | //Introduced in DOM Level 3
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| 259 | virtual const XMLCh* getActualEncoding() const;
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| 260 | virtual void setActualEncoding(const XMLCh* actualEncoding);
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| 261 | virtual const XMLCh* getEncoding() const;
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| 262 | virtual void setEncoding(const XMLCh* encoding);
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| 263 | virtual bool getStandalone() const;
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| 264 | virtual void setStandalone(bool standalone);
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| 265 | virtual const XMLCh* getVersion() const;
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| 266 | virtual void setVersion(const XMLCh* version);
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| 267 | virtual const XMLCh* getDocumentURI() const;
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| 268 | virtual void setDocumentURI(const XMLCh* documentURI);
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| 269 | virtual bool getStrictErrorChecking() const;
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| 270 | virtual void setStrictErrorChecking(bool strictErrorChecking);
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| 271 | virtual DOMNode* adoptNode(DOMNode* source);
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| 272 | virtual void normalizeDocument();
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| 273 | virtual DOMConfiguration* getDOMConfiguration() const;
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| 274 | virtual void setDOMConfiguration(DOMConfiguration *config);
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| 275 |
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| 276 | // helper functions to prevent storing userdata pointers on every node.
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| 277 | void* setUserData(DOMNodeImpl* n,
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| 278 | const XMLCh* key,
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| 279 | void* data,
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| 280 | DOMUserDataHandler* handler);
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| 281 | void* getUserData(const DOMNodeImpl* n,
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| 282 | const XMLCh* key) const;
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| 283 | void callUserDataHandlers(const DOMNodeImpl* n,
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| 284 | DOMUserDataHandler::DOMOperationType operation,
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| 285 | const DOMNode* src,
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| 286 | const DOMNode* dst) const;
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| 287 | void transferUserData(DOMNodeImpl* n1, DOMNodeImpl* n2);
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| 288 |
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| 289 | DOMNode* renameNode(DOMNode* n,
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| 290 | const XMLCh* namespaceURI,
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| 291 | const XMLCh* name);
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| 292 |
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| 293 | //Return the index > 0 of ':' in the given qualified name qName="prefix:localName".
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| 294 | //Return 0 if there is no ':', or -1 if qName is malformed such as ":abcd".
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| 295 | static int indexofQualifiedName(const XMLCh * qName);
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| 296 | static bool isKidOK(DOMNode *parent, DOMNode *child);
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| 297 |
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| 298 | inline DOMNodeIDMap* getNodeIDMap() {return fNodeIDMap;};
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| 299 |
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| 300 |
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| 301 | //
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| 302 | // Memory Management Functions. All memory is allocated by and owned by
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| 303 | // a document, and is not recovered until the
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| 304 | // document itself is deleted.
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| 305 | //
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| 306 | void* allocate(size_t amount);
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| 307 | void* allocate(size_t amount, NodeObjectType type);
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| 308 | XMLCh* cloneString(const XMLCh *src);
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| 309 | const XMLCh* getPooledString(const XMLCh *src);
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| 310 | void deleteHeap();
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| 311 | void release(DOMNode* object, NodeObjectType type);
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| 312 | void releaseDocNotifyUserData(DOMNode* object);
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| 313 | void releaseBuffer(DOMBuffer* buffer);
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| 314 | DOMBuffer* popBuffer();
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| 315 | MemoryManager* getMemoryManager() const;
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| 316 |
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| 317 | // Factory methods for getting/creating node lists.
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| 318 | // Because nothing is ever deleted, the implementation caches and recycles
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| 319 | // previously used instances of DOMDeepNodeList
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| 320 | //
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| 321 | DOMNodeList* getDeepNodeList(const DOMNode *rootNode, const XMLCh *tagName);
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| 322 | DOMNodeList* getDeepNodeList(const DOMNode *rootNode, //DOM Level 2
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| 323 | const XMLCh *namespaceURI,
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| 324 | const XMLCh *localName);
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| 325 |
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| 326 | private:
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| 327 | //Internal helper functions
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| 328 | virtual DOMNode* importNode(DOMNode *source, bool deep, bool cloningNode);
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| 329 |
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| 330 | // -----------------------------------------------------------------------
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| 331 | // Unimplemented constructors and operators
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| 332 | // -----------------------------------------------------------------------
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| 333 | DOMDocumentImpl(const DOMDocumentImpl &);
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| 334 | DOMDocumentImpl & operator = (const DOMDocumentImpl &);
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| 335 |
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| 336 | private:
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| 337 | // -----------------------------------------------------------------------
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| 338 | // data
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| 339 | // -----------------------------------------------------------------------
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| 340 | // New data introduced in DOM Level 3
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| 341 | const XMLCh* fActualEncoding;
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| 342 | const XMLCh* fEncoding;
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| 343 | bool fStandalone;
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| 344 | const XMLCh* fVersion;
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| 345 | const XMLCh* fDocumentURI;
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| 346 | DOMConfiguration* fDOMConfiguration;
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| 347 |
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| 348 | RefHashTableOf<DOMNodeUserDataTable>* fUserDataTable;
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| 349 |
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| 350 |
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| 351 | // Per-Document heap Variables.
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| 352 | // The heap consists of one or more biggish blocks which are
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| 353 | // sub-allocated for individual allocations of nodes, strings, etc.
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| 354 | // The big blocks form a linked list, allowing them to be located for deletion.
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| 355 | //
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| 356 | // There is no provision for deleting suballocated blocks, other than
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| 357 | // deleting the entire heap when the document is deleted.
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| 358 | //
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| 359 | // There is no header on individual sub-allocated blocks.
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| 360 | // The header on big blocks consists only of a single back pointer to
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| 361 | // the previously allocated big block (our linked list of big blocks)
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| 362 | //
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| 363 | //
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| 364 | // revisit - this heap should be encapsulated into its own
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| 365 | // class, rather than hanging naked on Document.
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| 366 | //
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| 367 | void* fCurrentBlock;
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| 368 | char* fFreePtr;
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| 369 | XMLSize_t fFreeBytesRemaining;
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| 370 |
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| 371 | // To recycle the DOMNode pointer
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| 372 | RefArrayOf<DOMNodePtr>* fRecycleNodePtr;
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| 373 |
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| 374 | // To recycle DOMBuffer pointer
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| 375 | RefStackOf<DOMBuffer>* fRecycleBufferPtr;
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| 376 |
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| 377 | // Pool of DOMNodeList for getElementsByTagName
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| 378 | DOMDeepNodeListPool<DOMDeepNodeListImpl>* fNodeListPool;
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| 379 |
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| 380 | // Other data
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| 381 | DOMDocumentType* fDocType;
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| 382 | DOMElement* fDocElement;
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| 383 | DOMStringPool* fNamePool;
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| 384 | DOMNormalizer* fNormalizer;
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| 385 | Ranges* fRanges;
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| 386 | NodeIterators* fNodeIterators;
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| 387 | MemoryManager* fMemoryManager; // configurable memory manager
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| 388 |
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| 389 | int fChanges;
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| 390 | bool errorChecking; // Bypass error checking.
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| 391 |
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| 392 | };
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| 393 |
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| 394 | inline MemoryManager* DOMDocumentImpl::getMemoryManager() const
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| 395 | {
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| 396 | return fMemoryManager;
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| 397 | }
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| 398 |
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| 399 | XERCES_CPP_NAMESPACE_END
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| 400 |
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| 401 | // ---------------------------------------------------------------------------
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| 402 | //
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| 403 | // Operator new. Global overloaded version, lets any object be allocated on
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| 404 | // the heap owned by a document.
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| 405 | //
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| 406 | // ---------------------------------------------------------------------------
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| 407 | inline void * operator new(size_t amt, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocumentImpl::NodeObjectType type)
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| 408 | {
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| 409 | // revist. Probably should be a checked cast.
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| 410 | void *p = ((XERCES_CPP_NAMESPACE_QUALIFIER DOMDocumentImpl *)doc)->allocate(amt, type);
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| 411 | return p;
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| 412 | }
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| 413 |
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| 414 | inline void * operator new(size_t amt, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc)
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| 415 | {
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| 416 | // revist. Probably should be a checked cast.
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| 417 | void *p = ((XERCES_CPP_NAMESPACE_QUALIFIER DOMDocumentImpl *)doc)->allocate(amt);
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| 418 | return p;
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| 419 | }
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| 420 |
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| 421 | // ---------------------------------------------------------------------------
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| 422 | // For DOM:
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| 423 | // Bypass compiler warning:
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| 424 | // no matching operator delete found; memory will not be freed if initialization throws an exception
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| 425 | // ---------------------------------------------------------------------------
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| 426 | #if _MSC_VER >= 1200 /* VC++ 6.0 */
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| 427 | inline void operator delete(void* ptr, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc)
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| 428 | {
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| 429 | return;
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| 430 | }
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| 431 | inline void operator delete(void* ptr, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocumentImpl::NodeObjectType type)
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| 432 | {
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| 433 | return;
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| 434 | }
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| 435 | #endif
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| 436 |
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| 437 | #endif
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