[358] | 1 | /*
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| 2 | * Copyright 2001-2004 The Apache Software Foundation.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | /*
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| 18 | * $Id: XercesXPath.hpp,v 1.9 2004/09/08 13:57:00 peiyongz Exp $
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| 19 | */
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| 20 |
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| 21 | #if !defined(XERCESXPATH_HPP)
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| 22 | #define XERCESXPATH_HPP
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| 23 |
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| 24 |
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| 25 | // ---------------------------------------------------------------------------
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| 26 | // Includes
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| 27 | // ---------------------------------------------------------------------------
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| 28 | #include <xercesc/util/QName.hpp>
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| 29 | #include <xercesc/util/RefVectorOf.hpp>
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| 30 | #include <xercesc/util/ValueVectorOf.hpp>
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| 31 |
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| 32 | #include <xercesc/internal/XSerializable.hpp>
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| 33 |
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| 34 | XERCES_CPP_NAMESPACE_BEGIN
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| 35 |
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| 36 | // ---------------------------------------------------------------------------
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| 37 | // Forward Declarations
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| 38 | // ---------------------------------------------------------------------------
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| 39 | class XMLStringPool;
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| 40 | class NamespaceScope;
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| 41 |
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| 42 |
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| 43 | class VALIDATORS_EXPORT XercesNodeTest : public XSerializable, public XMemory
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| 44 | {
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| 45 | public:
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| 46 | // -----------------------------------------------------------------------
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| 47 | // Constants
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| 48 | // -----------------------------------------------------------------------
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| 49 | enum {
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| 50 | QNAME = 1,
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| 51 | WILDCARD = 2,
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| 52 | NODE = 3,
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| 53 | NAMESPACE= 4,
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| 54 | UNKNOWN
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| 55 | };
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| 56 |
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| 57 | // -----------------------------------------------------------------------
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| 58 | // Constructors/Destructor
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| 59 | // -----------------------------------------------------------------------
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| 60 | XercesNodeTest(const short type,
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| 61 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 62 | XercesNodeTest(const QName* const qName);
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| 63 | XercesNodeTest(const XMLCh* const prefix, const unsigned int uriId,
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| 64 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 65 | XercesNodeTest(const XercesNodeTest& other);
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| 66 | ~XercesNodeTest() { delete fName; }
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| 67 |
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| 68 | // -----------------------------------------------------------------------
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| 69 | // Operators
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| 70 | // -----------------------------------------------------------------------
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| 71 | XercesNodeTest& operator= (const XercesNodeTest& other);
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| 72 | bool operator== (const XercesNodeTest& other) const;
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| 73 | bool operator!= (const XercesNodeTest& other) const;
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| 74 |
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| 75 | // -----------------------------------------------------------------------
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| 76 | // Getter methods
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| 77 | // -----------------------------------------------------------------------
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| 78 | short getType() const { return fType; }
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| 79 | QName* getName() const { return fName; }
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| 80 |
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| 81 | /***
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| 82 | * Support for Serialization/De-serialization
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| 83 | ***/
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| 84 | DECL_XSERIALIZABLE(XercesNodeTest)
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| 85 |
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| 86 | XercesNodeTest(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 87 |
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| 88 | private:
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| 89 | // -----------------------------------------------------------------------
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| 90 | // Data members
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| 91 | // -----------------------------------------------------------------------
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| 92 | short fType;
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| 93 | QName* fName;
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| 94 | };
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| 95 |
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| 96 |
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| 97 | /**
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| 98 | * A location path step comprised of an axis and node test.
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| 99 | */
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| 100 | class VALIDATORS_EXPORT XercesStep : public XSerializable, public XMemory
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| 101 | {
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| 102 | public:
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| 103 | // -----------------------------------------------------------------------
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| 104 | // Constants
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| 105 | // -----------------------------------------------------------------------
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| 106 | enum { // Axis type
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| 107 | CHILD = 1,
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| 108 | ATTRIBUTE = 2,
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| 109 | SELF = 3,
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| 110 | DESCENDANT = 4,
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| 111 | UNKNOWN
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| 112 | };
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| 113 |
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| 114 | // -----------------------------------------------------------------------
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| 115 | // Constructors/Destructor
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| 116 | // -----------------------------------------------------------------------
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| 117 | XercesStep(const unsigned short axisType, XercesNodeTest* const nodeTest);
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| 118 | XercesStep(const XercesStep& other);
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| 119 | ~XercesStep() { delete fNodeTest; }
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| 120 |
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| 121 | // -----------------------------------------------------------------------
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| 122 | // Operators
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| 123 | // -----------------------------------------------------------------------
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| 124 | XercesStep& operator= (const XercesStep& other);
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| 125 | bool operator== (const XercesStep& other) const;
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| 126 | bool operator!= (const XercesStep& other) const;
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| 127 |
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| 128 | // -----------------------------------------------------------------------
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| 129 | // Getter methods
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| 130 | // -----------------------------------------------------------------------
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| 131 | unsigned short getAxisType() const { return fAxisType; }
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| 132 | XercesNodeTest* getNodeTest() const { return fNodeTest; }
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| 133 |
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| 134 | /***
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| 135 | * Support for Serialization/De-serialization
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| 136 | ***/
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| 137 | DECL_XSERIALIZABLE(XercesStep)
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| 138 |
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| 139 | XercesStep(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 140 |
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| 141 | private:
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| 142 | // -----------------------------------------------------------------------
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| 143 | // Data members
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| 144 | // -----------------------------------------------------------------------
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| 145 | unsigned short fAxisType;
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| 146 | XercesNodeTest* fNodeTest;
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| 147 | };
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| 148 |
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| 149 |
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| 150 | /**
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| 151 | * A location path representation for an XPath expression.
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| 152 | */
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| 153 | class VALIDATORS_EXPORT XercesLocationPath : public XSerializable, public XMemory
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| 154 | {
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| 155 | public:
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| 156 | // -----------------------------------------------------------------------
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| 157 | // Constructors/Destructor
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| 158 | // -----------------------------------------------------------------------
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| 159 | XercesLocationPath(RefVectorOf<XercesStep>* const steps);
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| 160 | ~XercesLocationPath() { delete fSteps; }
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| 161 |
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| 162 | // -----------------------------------------------------------------------
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| 163 | // Operators
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| 164 | // -----------------------------------------------------------------------
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| 165 | bool operator== (const XercesLocationPath& other) const;
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| 166 | bool operator!= (const XercesLocationPath& other) const;
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| 167 |
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| 168 | // -----------------------------------------------------------------------
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| 169 | // Access methods
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| 170 | // -----------------------------------------------------------------------
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| 171 | unsigned int getStepSize() const;
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| 172 | void addStep(XercesStep* const aStep);
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| 173 | XercesStep* getStep(const unsigned int index) const;
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| 174 |
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| 175 | /***
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| 176 | * Support for Serialization/De-serialization
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| 177 | ***/
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| 178 | DECL_XSERIALIZABLE(XercesLocationPath)
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| 179 |
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| 180 | XercesLocationPath(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 181 |
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| 182 | private:
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| 183 | // -----------------------------------------------------------------------
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| 184 | // Unimplemented contstructors and operators
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| 185 | // -----------------------------------------------------------------------
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| 186 | XercesLocationPath(const XercesLocationPath& other);
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| 187 | XercesLocationPath& operator= (const XercesLocationPath& other);
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| 188 |
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| 189 | // -----------------------------------------------------------------------
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| 190 | // Data members
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| 191 | // -----------------------------------------------------------------------
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| 192 | RefVectorOf<XercesStep>* fSteps;
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| 193 | };
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| 194 |
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| 195 |
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| 196 | class VALIDATORS_EXPORT XercesXPath : public XSerializable, public XMemory
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| 197 | {
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| 198 | public:
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| 199 | // -----------------------------------------------------------------------
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| 200 | // Constants
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| 201 | // -----------------------------------------------------------------------
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| 202 | /**
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| 203 | * [28] ExprToken ::= '(' | ')' | '[' | ']' | '.' | '..' | '@' | ',' | '::'
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| 204 | * | NameTest | NodeType | Operator | FunctionName
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| 205 | * | AxisName | Literal | Number | VariableReference
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| 206 | */
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| 207 | enum {
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| 208 | EXPRTOKEN_OPEN_PAREN = 0,
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| 209 | EXPRTOKEN_CLOSE_PAREN = 1,
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| 210 | EXPRTOKEN_OPEN_BRACKET = 2,
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| 211 | EXPRTOKEN_CLOSE_BRACKET = 3,
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| 212 | EXPRTOKEN_PERIOD = 4,
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| 213 | EXPRTOKEN_DOUBLE_PERIOD = 5,
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| 214 | EXPRTOKEN_ATSIGN = 6,
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| 215 | EXPRTOKEN_COMMA = 7,
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| 216 | EXPRTOKEN_DOUBLE_COLON = 8,
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| 217 | EXPRTOKEN_NAMETEST_ANY = 9,
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| 218 | EXPRTOKEN_NAMETEST_NAMESPACE = 10,
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| 219 | EXPRTOKEN_NAMETEST_QNAME = 11,
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| 220 | EXPRTOKEN_NODETYPE_COMMENT = 12,
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| 221 | EXPRTOKEN_NODETYPE_TEXT = 13,
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| 222 | EXPRTOKEN_NODETYPE_PI = 14,
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| 223 | EXPRTOKEN_NODETYPE_NODE = 15,
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| 224 | EXPRTOKEN_OPERATOR_AND = 16,
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| 225 | EXPRTOKEN_OPERATOR_OR = 17,
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| 226 | EXPRTOKEN_OPERATOR_MOD = 18,
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| 227 | EXPRTOKEN_OPERATOR_DIV = 19,
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| 228 | EXPRTOKEN_OPERATOR_MULT = 20,
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| 229 | EXPRTOKEN_OPERATOR_SLASH = 21,
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| 230 | EXPRTOKEN_OPERATOR_DOUBLE_SLASH = 22,
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| 231 | EXPRTOKEN_OPERATOR_UNION = 23,
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| 232 | EXPRTOKEN_OPERATOR_PLUS = 24,
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| 233 | EXPRTOKEN_OPERATOR_MINUS = 25,
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| 234 | EXPRTOKEN_OPERATOR_EQUAL = 26,
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| 235 | EXPRTOKEN_OPERATOR_NOT_EQUAL = 27,
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| 236 | EXPRTOKEN_OPERATOR_LESS = 28,
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| 237 | EXPRTOKEN_OPERATOR_LESS_EQUAL = 29,
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| 238 | EXPRTOKEN_OPERATOR_GREATER = 30,
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| 239 | EXPRTOKEN_OPERATOR_GREATER_EQUAL = 31,
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| 240 | EXPRTOKEN_FUNCTION_NAME = 32,
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| 241 | EXPRTOKEN_AXISNAME_ANCESTOR = 33,
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| 242 | EXPRTOKEN_AXISNAME_ANCESTOR_OR_SELF = 34,
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| 243 | EXPRTOKEN_AXISNAME_ATTRIBUTE = 35,
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| 244 | EXPRTOKEN_AXISNAME_CHILD = 36,
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| 245 | EXPRTOKEN_AXISNAME_DESCENDANT = 37,
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| 246 | EXPRTOKEN_AXISNAME_DESCENDANT_OR_SELF = 38,
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| 247 | EXPRTOKEN_AXISNAME_FOLLOWING = 39,
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| 248 | EXPRTOKEN_AXISNAME_FOLLOWING_SIBLING = 40,
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| 249 | EXPRTOKEN_AXISNAME_NAMESPACE = 41,
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| 250 | EXPRTOKEN_AXISNAME_PARENT = 42,
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| 251 | EXPRTOKEN_AXISNAME_PRECEDING = 43,
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| 252 | EXPRTOKEN_AXISNAME_PRECEDING_SIBLING = 44,
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| 253 | EXPRTOKEN_AXISNAME_SELF = 45,
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| 254 | EXPRTOKEN_LITERAL = 46,
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| 255 | EXPRTOKEN_NUMBER = 47,
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| 256 | EXPRTOKEN_VARIABLE_REFERENCE = 48
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| 257 | };
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| 258 |
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| 259 | // -----------------------------------------------------------------------
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| 260 | // Constructors/Destructor
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| 261 | // -----------------------------------------------------------------------
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| 262 | XercesXPath(const XMLCh* const xpathExpr,
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| 263 | XMLStringPool* const stringPool,
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| 264 | NamespaceScope* const scopeContext,
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| 265 | const unsigned int emptyNamespaceId,
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| 266 | const bool isSelector = false,
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| 267 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 268 | ~XercesXPath();
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| 269 |
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| 270 | // -----------------------------------------------------------------------
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| 271 | // Operators
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| 272 | // -----------------------------------------------------------------------
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| 273 | bool operator== (const XercesXPath& other) const;
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| 274 | bool operator!= (const XercesXPath& other) const;
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| 275 |
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| 276 | // -----------------------------------------------------------------------
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| 277 | // Constructors/Destructor
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| 278 | // -----------------------------------------------------------------------
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| 279 | RefVectorOf<XercesLocationPath>* getLocationPaths() const;
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| 280 |
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| 281 | /***
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| 282 | * Support for Serialization/De-serialization
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| 283 | ***/
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| 284 | DECL_XSERIALIZABLE(XercesXPath)
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| 285 |
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| 286 | XercesXPath(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 287 |
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| 288 | XMLCh* getExpression();
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| 289 |
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| 290 | private:
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| 291 | // -----------------------------------------------------------------------
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| 292 | // Unimplemented contstructors and operators
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| 293 | // -----------------------------------------------------------------------
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| 294 | XercesXPath(const XercesXPath& other);
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| 295 | XercesXPath& operator= (const XercesXPath& other);
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| 296 |
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| 297 | // -----------------------------------------------------------------------
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| 298 | // Helper methods
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| 299 | // -----------------------------------------------------------------------
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| 300 | void cleanUp();
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| 301 | void checkForSelectedAttributes();
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| 302 | void parseExpression(XMLStringPool* const stringPool,
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| 303 | NamespaceScope* const scopeContext);
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| 304 |
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| 305 | // -----------------------------------------------------------------------
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| 306 | // Data members
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| 307 | // -----------------------------------------------------------------------
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| 308 | unsigned int fEmptyNamespaceId;
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| 309 | XMLCh* fExpression;
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| 310 | RefVectorOf<XercesLocationPath>* fLocationPaths;
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| 311 | MemoryManager* fMemoryManager;
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| 312 | };
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| 313 |
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| 314 |
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| 315 | class VALIDATORS_EXPORT XPathScanner : public XMemory
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| 316 | {
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| 317 | public:
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| 318 | // -----------------------------------------------------------------------
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| 319 | // Constants
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| 320 | // -----------------------------------------------------------------------
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| 321 | enum {
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| 322 | CHARTYPE_INVALID = 0, // invalid XML character
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| 323 | CHARTYPE_OTHER = 1, // not special - one of "#%&;?\^`{}~" or DEL
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| 324 | CHARTYPE_WHITESPACE = 2, // one of "\t\n\r " (0x09, 0x0A, 0x0D, 0x20)
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| 325 | CHARTYPE_EXCLAMATION = 3, // '!' (0x21)
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| 326 | CHARTYPE_QUOTE = 4, // '\"' or '\'' (0x22 and 0x27)
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| 327 | CHARTYPE_DOLLAR = 5, // '$' (0x24)
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| 328 | CHARTYPE_OPEN_PAREN = 6, // '(' (0x28)
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| 329 | CHARTYPE_CLOSE_PAREN = 7, // ')' (0x29)
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| 330 | CHARTYPE_STAR = 8, // '*' (0x2A)
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| 331 | CHARTYPE_PLUS = 9, // '+' (0x2B)
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| 332 | CHARTYPE_COMMA = 10, // ',' (0x2C)
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| 333 | CHARTYPE_MINUS = 11, // '-' (0x2D)
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| 334 | CHARTYPE_PERIOD = 12, // '.' (0x2E)
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| 335 | CHARTYPE_SLASH = 13, // '/' (0x2F)
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| 336 | CHARTYPE_DIGIT = 14, // '0'-'9' (0x30 to 0x39)
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| 337 | CHARTYPE_COLON = 15, // ':' (0x3A)
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| 338 | CHARTYPE_LESS = 16, // '<' (0x3C)
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| 339 | CHARTYPE_EQUAL = 17, // '=' (0x3D)
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| 340 | CHARTYPE_GREATER = 18, // '>' (0x3E)
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| 341 | CHARTYPE_ATSIGN = 19, // '@' (0x40)
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| 342 | CHARTYPE_LETTER = 20, // 'A'-'Z' or 'a'-'z' (0x41 to 0x5A and 0x61 to 0x7A)
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| 343 | CHARTYPE_OPEN_BRACKET = 21, // '[' (0x5B)
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| 344 | CHARTYPE_CLOSE_BRACKET = 22, // ']' (0x5D)
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| 345 | CHARTYPE_UNDERSCORE = 23, // '_' (0x5F)
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| 346 | CHARTYPE_UNION = 24, // '|' (0x7C)
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| 347 | CHARTYPE_NONASCII = 25 // Non-ASCII Unicode codepoint (>= 0x80)
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| 348 | };
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| 349 |
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| 350 | // -----------------------------------------------------------------------
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| 351 | // Constructors/Destructor
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| 352 | // -----------------------------------------------------------------------
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| 353 | XPathScanner(XMLStringPool* const stringPool);
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| 354 | virtual ~XPathScanner() {}
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| 355 |
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| 356 | // -----------------------------------------------------------------------
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| 357 | // Scan methods
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| 358 | // -----------------------------------------------------------------------
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| 359 | bool scanExpression(const XMLCh* const data, int currentOffset,
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| 360 | const int endOffset, ValueVectorOf<int>* const tokens);
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| 361 |
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| 362 | protected:
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| 363 | // -----------------------------------------------------------------------
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| 364 | // Helper methods
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| 365 | // -----------------------------------------------------------------------
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| 366 | /**
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| 367 | * This method adds the specified token to the token list. By default,
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| 368 | * this method allows all tokens. However, subclasses can can override
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| 369 | * this method in order to disallow certain tokens from being used in the
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| 370 | * scanned XPath expression. This is a convenient way of allowing only
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| 371 | * a subset of XPath.
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| 372 | */
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| 373 | virtual void addToken(ValueVectorOf<int>* const tokens, const int aToken);
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| 374 |
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| 375 | private:
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| 376 | // -----------------------------------------------------------------------
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| 377 | // Unimplemented contstructors and operators
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| 378 | // -----------------------------------------------------------------------
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| 379 | XPathScanner(const XPathScanner& other);
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| 380 | XPathScanner& operator= (const XPathScanner& other);
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| 381 |
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| 382 | // -----------------------------------------------------------------------
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| 383 | // Helper methods
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| 384 | // -----------------------------------------------------------------------
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| 385 | void init();
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| 386 |
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| 387 | // -----------------------------------------------------------------------
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| 388 | // Scan methods
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| 389 | // -----------------------------------------------------------------------
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| 390 | int scanNCName(const XMLCh* const data, const int endOffset,
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| 391 | int currentOffset);
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| 392 | int scanNumber(const XMLCh* const data, const int endOffset,
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| 393 | int currentOffset, ValueVectorOf<int>* const tokens);
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| 394 |
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| 395 | // -----------------------------------------------------------------------
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| 396 | // Data members
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| 397 | // -----------------------------------------------------------------------
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| 398 | int fAndSymbol;
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| 399 | int fOrSymbol;
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| 400 | int fModSymbol;
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| 401 | int fDivSymbol;
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| 402 | int fCommentSymbol;
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| 403 | int fTextSymbol;
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| 404 | int fPISymbol;
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| 405 | int fNodeSymbol;
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| 406 | int fAncestorSymbol;
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| 407 | int fAncestorOrSelfSymbol;
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| 408 | int fAttributeSymbol;
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| 409 | int fChildSymbol;
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| 410 | int fDescendantSymbol;
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| 411 | int fDescendantOrSelfSymbol;
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| 412 | int fFollowingSymbol;
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| 413 | int fFollowingSiblingSymbol;
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| 414 | int fNamespaceSymbol;
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| 415 | int fParentSymbol;
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| 416 | int fPrecedingSymbol;
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| 417 | int fPrecedingSiblingSymbol;
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| 418 | int fSelfSymbol;
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| 419 | XMLStringPool* fStringPool;
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| 420 |
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| 421 | static const XMLByte fASCIICharMap[128];
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| 422 | };
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| 423 |
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| 424 |
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| 425 | class VALIDATORS_EXPORT XPathScannerForSchema: public XPathScanner
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| 426 | {
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| 427 | public:
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| 428 | // -----------------------------------------------------------------------
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| 429 | // Constructors/Destructor
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| 430 | // -----------------------------------------------------------------------
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| 431 | XPathScannerForSchema(XMLStringPool* const stringPool);
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| 432 | ~XPathScannerForSchema() {}
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| 433 |
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| 434 | protected:
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| 435 | // -----------------------------------------------------------------------
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| 436 | // Helper methods
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| 437 | // -----------------------------------------------------------------------
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| 438 | void addToken(ValueVectorOf<int>* const tokens, const int aToken);
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| 439 |
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| 440 | private:
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| 441 | // -----------------------------------------------------------------------
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| 442 | // Unimplemented contstructors and operators
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| 443 | // -----------------------------------------------------------------------
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| 444 | XPathScannerForSchema(const XPathScannerForSchema& other);
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| 445 | XPathScannerForSchema& operator= (const XPathScannerForSchema& other);
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| 446 | };
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| 447 |
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| 448 | // ---------------------------------------------------------------------------
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| 449 | // XercesLocationPath: Access methods
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| 450 | // ---------------------------------------------------------------------------
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| 451 | inline unsigned int XercesLocationPath::getStepSize() const {
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| 452 |
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| 453 | if (fSteps)
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| 454 | return fSteps->size();
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| 455 |
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| 456 | return 0;
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| 457 | }
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| 458 |
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| 459 | inline void XercesLocationPath::addStep(XercesStep* const aStep) {
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| 460 |
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| 461 | fSteps->addElement(aStep);
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| 462 | }
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| 463 |
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| 464 | inline XercesStep* XercesLocationPath::getStep(const unsigned int index) const {
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| 465 |
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| 466 | if (fSteps)
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| 467 | return fSteps->elementAt(index);
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| 468 |
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| 469 | return 0;
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| 470 | }
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| 471 |
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| 472 | // ---------------------------------------------------------------------------
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| 473 | // XercesScanner: Helper methods
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| 474 | // ---------------------------------------------------------------------------
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| 475 | inline void XPathScanner::addToken(ValueVectorOf<int>* const tokens,
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| 476 | const int aToken) {
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| 477 | tokens->addElement(aToken);
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| 478 | }
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| 479 |
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| 480 |
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| 481 | // ---------------------------------------------------------------------------
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| 482 | // XercesXPath: Getter methods
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| 483 | // ---------------------------------------------------------------------------
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| 484 | inline RefVectorOf<XercesLocationPath>* XercesXPath::getLocationPaths() const {
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| 485 |
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| 486 | return fLocationPaths;
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| 487 | }
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| 488 |
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| 489 | inline XMLCh* XercesXPath::getExpression() {
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| 490 | return fExpression;
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| 491 | }
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| 492 |
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| 493 | XERCES_CPP_NAMESPACE_END
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| 494 |
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| 495 | #endif
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| 496 |
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| 497 | /**
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| 498 | * End of file XercesPath.hpp
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| 499 | */
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| 500 |
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