[188] | 1 | #ifndef DOMCasts_HEADER_GUARD_
|
---|
| 2 | #define DOMCasts_HEADER_GUARD_
|
---|
| 3 |
|
---|
| 4 | /*
|
---|
| 5 | * The Apache Software License, Version 1.1
|
---|
| 6 | *
|
---|
| 7 | * Copyright (c) 2001-2002 The Apache Software Foundation. All rights
|
---|
| 8 | * reserved.
|
---|
| 9 | *
|
---|
| 10 | * Redistribution and use in source and binary forms, with or without
|
---|
| 11 | * modification, are permitted provided that the following conditions
|
---|
| 12 | * are met:
|
---|
| 13 | *
|
---|
| 14 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 15 | * notice, this list of conditions and the following disclaimer.
|
---|
| 16 | *
|
---|
| 17 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 18 | * notice, this list of conditions and the following disclaimer in
|
---|
| 19 | * the documentation and/or other materials provided with the
|
---|
| 20 | * distribution.
|
---|
| 21 | *
|
---|
| 22 | * 3. The end-user documentation included with the redistribution,
|
---|
| 23 | * if any, must include the following acknowledgment:
|
---|
| 24 | * "This product includes software developed by the
|
---|
| 25 | * Apache Software Foundation (http://www.apache.org/)."
|
---|
| 26 | * Alternately, this acknowledgment may appear in the software itself,
|
---|
| 27 | * if and wherever such third-party acknowledgments normally appear.
|
---|
| 28 | *
|
---|
| 29 | * 4. The names "Xerces" and "Apache Software Foundation" must
|
---|
| 30 | * not be used to endorse or promote products derived from this
|
---|
| 31 | * software without prior written permission. For written
|
---|
| 32 | * permission, please contact apache\@apache.org.
|
---|
| 33 | *
|
---|
| 34 | * 5. Products derived from this software may not be called "Apache",
|
---|
| 35 | * nor may "Apache" appear in their name, without prior written
|
---|
| 36 | * permission of the Apache Software Foundation.
|
---|
| 37 | *
|
---|
| 38 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
---|
| 39 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
---|
| 40 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
---|
| 41 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
---|
| 42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
---|
| 43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
---|
| 44 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
---|
| 45 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
---|
| 46 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
---|
| 47 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
---|
| 48 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
| 49 | * SUCH DAMAGE.
|
---|
| 50 | * ====================================================================
|
---|
| 51 | *
|
---|
| 52 | * This software consists of voluntary contributions made by many
|
---|
| 53 | * individuals on behalf of the Apache Software Foundation, and was
|
---|
| 54 | * originally based on software copyright (c) 2001, International
|
---|
| 55 | * Business Machines, Inc., http://www.ibm.com . For more information
|
---|
| 56 | * on the Apache Software Foundation, please see
|
---|
| 57 | * <http://www.apache.org/>.
|
---|
| 58 | */
|
---|
| 59 |
|
---|
| 60 | /*
|
---|
| 61 | * $Id: DOMCasts.hpp,v 1.2 2002/11/04 15:07:34 tng Exp $
|
---|
| 62 | */
|
---|
| 63 |
|
---|
| 64 | //
|
---|
| 65 | // This file is part of the internal implementation of the C++ XML DOM.
|
---|
| 66 | // It should NOT be included or used directly by application programs.
|
---|
| 67 | //
|
---|
| 68 | // Applications should include the file <xercesc/dom/DOM.hpp> for the entire
|
---|
| 69 | // DOM API, or xercesc/dom/DOM*.hpp for individual DOM classes, where the class
|
---|
| 70 | // name is substituded for the *.
|
---|
| 71 | //
|
---|
| 72 |
|
---|
| 73 | //
|
---|
| 74 | // Define inline casting functions to convert from
|
---|
| 75 | // (DOMNode *) to DOMParentNode or DOMChildNode *.
|
---|
| 76 | //
|
---|
| 77 | // This requires knowledge of the structure of the fields of
|
---|
| 78 | // for all node types. There are three categories -
|
---|
| 79 | //
|
---|
| 80 | // Nodetypes that can have children and can be a child themselves.
|
---|
| 81 | // e.g. Elements
|
---|
| 82 | //
|
---|
| 83 | // Object
|
---|
| 84 | // DOMNodeImpl fNode;
|
---|
| 85 | // DOMParentNode fParent;
|
---|
| 86 | // DOMChildNode fChild;
|
---|
| 87 | // ... // other fields, depending on node type.
|
---|
| 88 | //
|
---|
| 89 | // Nodetypes that can not have children, e.g. TEXT
|
---|
| 90 | //
|
---|
| 91 | // Object
|
---|
| 92 | // DOMNodeImpl fNode;
|
---|
| 93 | // DOMChildNode fChild;
|
---|
| 94 | // ... // other fields, depending on node type
|
---|
| 95 | //
|
---|
| 96 | // Nodetypes that can not be a child of other nodes, but that can
|
---|
| 97 | // have children (are a parent) e.g. ATTR
|
---|
| 98 | // Object
|
---|
| 99 | // DOMNodeImpl fNode;
|
---|
| 100 | // DOMParentNode fParent
|
---|
| 101 | // ... // other fields, depending on node type
|
---|
| 102 | //
|
---|
| 103 | // The casting functions make these assumptions:
|
---|
| 104 | // 1. The cast is possible. Using code will not attempt to
|
---|
| 105 | // cast to something that does not exist, such as the child
|
---|
| 106 | // part of an ATTR
|
---|
| 107 | //
|
---|
| 108 | // 2. The nodes belong to this implementation.
|
---|
| 109 | //
|
---|
| 110 | // Some of the casts use the LEAFNODE flag in the common fNode part to
|
---|
| 111 | // determine whether an fParent field exists, and thus the
|
---|
| 112 | // position of the fChild part within the node.
|
---|
| 113 | //
|
---|
| 114 | // These functions also cast off const. It was either do that, or make
|
---|
| 115 | // a second overloaded set that took and returned const arguements.
|
---|
| 116 | //
|
---|
| 117 |
|
---|
| 118 | #include "DOMElementImpl.hpp"
|
---|
| 119 | #include "DOMTextImpl.hpp"
|
---|
| 120 |
|
---|
| 121 | XERCES_CPP_NAMESPACE_BEGIN
|
---|
| 122 |
|
---|
| 123 |
|
---|
| 124 | static inline DOMNodeImpl *castToNodeImpl(const DOMNode *p)
|
---|
| 125 | {
|
---|
| 126 | DOMElementImpl *pE = (DOMElementImpl *)p;
|
---|
| 127 | return &(pE->fNode);
|
---|
| 128 | }
|
---|
| 129 |
|
---|
| 130 |
|
---|
| 131 | static inline DOMParentNode *castToParentImpl(const DOMNode *p) {
|
---|
| 132 | DOMElementImpl *pE = (DOMElementImpl *)p;
|
---|
| 133 | return &(pE->fParent);
|
---|
| 134 | }
|
---|
| 135 |
|
---|
| 136 |
|
---|
| 137 | static inline DOMChildNode *castToChildImpl(const DOMNode *p) {
|
---|
| 138 | DOMElementImpl *pE = (DOMElementImpl *)p;
|
---|
| 139 | if (pE->fNode.isLeafNode()) {
|
---|
| 140 | DOMTextImpl *pT = (DOMTextImpl *)p;
|
---|
| 141 | return &(pT->fChild);
|
---|
| 142 | }
|
---|
| 143 | return &(pE->fChild);
|
---|
| 144 | }
|
---|
| 145 |
|
---|
| 146 |
|
---|
| 147 | static inline DOMNode *castToNode(const DOMParentNode *p ) {
|
---|
| 148 | int parentOffset = (char *)&(((DOMElementImpl *)0)->fParent) - (char *)0;
|
---|
| 149 | char *retPtr = (char *)p - parentOffset;
|
---|
| 150 | return (DOMNode *)retPtr;
|
---|
| 151 | }
|
---|
| 152 |
|
---|
| 153 | static inline DOMNode *castToNode(const DOMNodeImpl *p) {
|
---|
| 154 | int nodeImplOffset = (char *)&(((DOMElementImpl *)0)->fNode) - (char *)0;
|
---|
| 155 | char *retPtr = (char *)p - nodeImplOffset;
|
---|
| 156 | return (DOMNode *)retPtr;
|
---|
| 157 | }
|
---|
| 158 |
|
---|
| 159 |
|
---|
| 160 | static inline DOMNodeImpl *castToNodeImpl(const DOMParentNode *p)
|
---|
| 161 | {
|
---|
| 162 | int nodeImplOffset = (char *)&(((DOMElementImpl *)0)->fNode) - (char *)0;
|
---|
| 163 | int parentOffset = (char *)&(((DOMElementImpl *)0)->fParent) - (char *)0;
|
---|
| 164 | char *retPtr = (char *)p - parentOffset + nodeImplOffset;
|
---|
| 165 | return (DOMNodeImpl *)retPtr;
|
---|
| 166 | }
|
---|
| 167 |
|
---|
| 168 | XERCES_CPP_NAMESPACE_END
|
---|
| 169 |
|
---|
| 170 | #endif
|
---|