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File indexing completed on 2025-01-18 10:15:19
0001 /* 0002 * Licensed to the Apache Software Foundation (ASF) under one or more 0003 * contributor license agreements. See the NOTICE file distributed with 0004 * this work for additional information regarding copyright ownership. 0005 * The ASF licenses this file to You under the Apache License, Version 2.0 0006 * (the "License"); you may not use this file except in compliance with 0007 * the License. You may obtain a copy of the License at 0008 * 0009 * http://www.apache.org/licenses/LICENSE-2.0 0010 * 0011 * Unless required by applicable law or agreed to in writing, software 0012 * distributed under the License is distributed on an "AS IS" BASIS, 0013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 0014 * See the License for the specific language governing permissions and 0015 * limitations under the License. 0016 */ 0017 0018 /* 0019 * $Id$ 0020 */ 0021 0022 #if !defined(XERCESC_INCLUDE_GUARD_XPATHMATCHER_HPP) 0023 #define XERCESC_INCLUDE_GUARD_XPATHMATCHER_HPP 0024 0025 0026 // --------------------------------------------------------------------------- 0027 // Includes 0028 // --------------------------------------------------------------------------- 0029 #include <xercesc/util/ValueStackOf.hpp> 0030 #include <xercesc/util/RefVectorOf.hpp> 0031 #include <xercesc/framework/XMLBuffer.hpp> 0032 0033 XERCES_CPP_NAMESPACE_BEGIN 0034 0035 // --------------------------------------------------------------------------- 0036 // Forward Declaration 0037 // --------------------------------------------------------------------------- 0038 class XMLElementDecl; 0039 class XercesXPath; 0040 class IdentityConstraint; 0041 class DatatypeValidator; 0042 class XMLStringPool; 0043 class XercesLocationPath; 0044 class XMLAttr; 0045 class XercesNodeTest; 0046 class QName; 0047 class ValidationContext; 0048 0049 class VALIDATORS_EXPORT XPathMatcher : public XMemory 0050 { 0051 public: 0052 // ----------------------------------------------------------------------- 0053 // Constructors/Destructor 0054 // ----------------------------------------------------------------------- 0055 XPathMatcher(XercesXPath* const xpath, 0056 MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); 0057 XPathMatcher(XercesXPath* const xpath, 0058 IdentityConstraint* const ic, 0059 MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); 0060 virtual ~XPathMatcher(); 0061 0062 // ----------------------------------------------------------------------- 0063 // Getter methods 0064 // ----------------------------------------------------------------------- 0065 IdentityConstraint* getIdentityConstraint() const { return fIdentityConstraint; } 0066 MemoryManager* getMemoryManager() const { return fMemoryManager; } 0067 0068 // ----------------------------------------------------------------------- 0069 // Match methods 0070 // ----------------------------------------------------------------------- 0071 /** 0072 * Returns true if XPath has been matched. 0073 */ 0074 unsigned char isMatched(); 0075 virtual int getInitialDepth() const; 0076 0077 // ----------------------------------------------------------------------- 0078 // XMLDocumentHandler methods 0079 // ----------------------------------------------------------------------- 0080 virtual void startDocumentFragment(); 0081 virtual void startElement(const XMLElementDecl& elemDecl, 0082 const unsigned int urlId, 0083 const XMLCh* const elemPrefix, 0084 const RefVectorOf<XMLAttr>& attrList, 0085 const XMLSize_t attrCount, 0086 ValidationContext* validationContext = 0); 0087 virtual void endElement(const XMLElementDecl& elemDecl, 0088 const XMLCh* const elemContent, 0089 ValidationContext* validationContext = 0, 0090 DatatypeValidator* actualValidator = 0); 0091 0092 enum 0093 { 0094 XP_MATCHED = 1 // matched any way 0095 , XP_MATCHED_A = 3 // matched on the attribute axis 0096 , XP_MATCHED_D = 5 // matched on the descendant-or-self axixs 0097 , XP_MATCHED_DP = 13 // matched some previous (ancestor) node on the 0098 // descendant-or-self-axis, but not this node 0099 }; 0100 0101 protected: 0102 0103 // ----------------------------------------------------------------------- 0104 // Match methods 0105 // ----------------------------------------------------------------------- 0106 /** 0107 * This method is called when the XPath handler matches the XPath 0108 * expression. Subclasses can override this method to provide default 0109 * handling upon a match. 0110 */ 0111 virtual void matched(const XMLCh* const content, 0112 DatatypeValidator* const dv, const bool isNil); 0113 0114 bool matches(const XercesNodeTest* nodeTest, const QName* qName); 0115 0116 private: 0117 // ----------------------------------------------------------------------- 0118 // Unimplemented constructors and operators 0119 // ----------------------------------------------------------------------- 0120 XPathMatcher(const XPathMatcher&); 0121 XPathMatcher& operator=(const XPathMatcher&); 0122 0123 // ----------------------------------------------------------------------- 0124 // Helper methods 0125 // ----------------------------------------------------------------------- 0126 void init(XercesXPath* const xpath); 0127 void cleanUp(); 0128 0129 protected: 0130 // ----------------------------------------------------------------------- 0131 // Data members 0132 // 0133 // fMatched 0134 // Indicates whether XPath has been matched or not 0135 // 0136 // fNoMatchDepth 0137 // Indicates whether matching is successful for the given xpath 0138 // expression. 0139 // 0140 // fCurrentStep 0141 // Stores current step. 0142 // 0143 // fStepIndexes 0144 // Integer stack of step indexes. 0145 // 0146 // fLocationPaths 0147 // fLocationPathSize 0148 // XPath location path, and its size. 0149 // 0150 // fIdentityConstraint 0151 // The identity constraint we're the matcher for. Only used for 0152 // selectors. 0153 // 0154 // ----------------------------------------------------------------------- 0155 XMLSize_t fLocationPathSize; 0156 unsigned char* fMatched; 0157 XMLSize_t* fNoMatchDepth; 0158 XMLSize_t* fCurrentStep; 0159 RefVectorOf<ValueStackOf<XMLSize_t> >* fStepIndexes; 0160 RefVectorOf<XercesLocationPath>* fLocationPaths; 0161 IdentityConstraint* fIdentityConstraint; 0162 MemoryManager* fMemoryManager; 0163 }; 0164 0165 // --------------------------------------------------------------------------- 0166 // XPathMatcher: Helper methods 0167 // --------------------------------------------------------------------------- 0168 inline void XPathMatcher::cleanUp() { 0169 0170 fMemoryManager->deallocate(fMatched);//delete [] fMatched; 0171 fMemoryManager->deallocate(fNoMatchDepth);//delete [] fNoMatchDepth; 0172 fMemoryManager->deallocate(fCurrentStep);//delete [] fCurrentStep; 0173 delete fStepIndexes; 0174 } 0175 0176 XERCES_CPP_NAMESPACE_END 0177 0178 #endif 0179 0180 /** 0181 * End of file XPathMatcher.hpp 0182 */ 0183
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