00001 /* 00002 * Copyright 1999-2004 The Apache Software Foundation. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #if !defined(TREEWALKER_HEADER_GUARD_1357924680) 00017 #define TREEWALKER_HEADER_GUARD_1357924680 00018 00019 00020 00021 // Base include file. Must be first. 00022 #include <xalanc/DOMSupport/DOMSupportDefinitions.hpp> 00023 00024 00025 00026 XALAN_CPP_NAMESPACE_BEGIN 00027 00028 00029 00030 class XalanNode; 00031 00032 00033 00034 class XALAN_DOMSUPPORT_EXPORT TreeWalker 00035 { 00036 public: 00037 00041 TreeWalker(); 00042 00043 virtual 00044 ~TreeWalker(); 00045 00061 const XalanNode* 00062 traverse(const XalanNode* pos); 00063 00079 XalanNode* 00080 traverse(XalanNode* pos); 00081 00099 const XalanNode* 00100 traverse( 00101 const XalanNode* pos, 00102 const XalanNode* parent); 00103 00121 XalanNode* 00122 traverse( 00123 XalanNode* pos, 00124 XalanNode* parent); 00125 00131 virtual void 00132 traverseSubtree(const XalanNode* pos); 00133 00139 virtual void 00140 traverseSubtree(XalanNode* pos); 00141 00142 protected: 00143 00151 virtual bool 00152 startNode(const XalanNode* node) = 0; 00153 00161 virtual bool 00162 startNode(XalanNode* node) = 0; 00163 00171 virtual bool 00172 endNode(const XalanNode* node) = 0; 00173 00181 virtual bool 00182 endNode(XalanNode* node) = 0; 00183 00184 private: 00185 }; 00186 00187 00188 00189 XALAN_CPP_NAMESPACE_END 00190 00191 00192 00193 #endif // TREEWALKER_HEADER_GUARD_1357924680
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