1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | |
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18 | /* |
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19 | * $Id: XercesXPath.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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20 | */ |
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21 | |
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22 | #if !defined(XERCESXPATH_HPP) |
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23 | #define XERCESXPATH_HPP |
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24 | |
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25 | |
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26 | // --------------------------------------------------------------------------- |
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27 | // Includes |
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28 | // --------------------------------------------------------------------------- |
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29 | #include <xercesc/util/QName.hpp> |
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30 | #include <xercesc/util/RefVectorOf.hpp> |
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31 | #include <xercesc/util/ValueVectorOf.hpp> |
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32 | |
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33 | #include <xercesc/internal/XSerializable.hpp> |
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34 | |
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35 | XERCES_CPP_NAMESPACE_BEGIN |
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36 | |
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37 | // --------------------------------------------------------------------------- |
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38 | // Forward Declarations |
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39 | // --------------------------------------------------------------------------- |
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40 | class XMLStringPool; |
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41 | class NamespaceScope; |
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42 | |
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43 | |
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44 | class VALIDATORS_EXPORT XercesNodeTest : public XSerializable, public XMemory |
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45 | { |
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46 | public: |
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47 | // ----------------------------------------------------------------------- |
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48 | // Constants |
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49 | // ----------------------------------------------------------------------- |
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50 | enum { |
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51 | QNAME = 1, |
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52 | WILDCARD = 2, |
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53 | NODE = 3, |
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54 | NAMESPACE= 4, |
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55 | UNKNOWN |
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56 | }; |
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57 | |
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58 | // ----------------------------------------------------------------------- |
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59 | // Constructors/Destructor |
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60 | // ----------------------------------------------------------------------- |
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61 | XercesNodeTest(const short type, |
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62 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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63 | XercesNodeTest(const QName* const qName); |
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64 | XercesNodeTest(const XMLCh* const prefix, const unsigned int uriId, |
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65 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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66 | XercesNodeTest(const XercesNodeTest& other); |
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67 | ~XercesNodeTest() { delete fName; } |
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68 | |
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69 | // ----------------------------------------------------------------------- |
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70 | // Operators |
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71 | // ----------------------------------------------------------------------- |
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72 | XercesNodeTest& operator= (const XercesNodeTest& other); |
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73 | bool operator== (const XercesNodeTest& other) const; |
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74 | bool operator!= (const XercesNodeTest& other) const; |
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75 | |
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76 | // ----------------------------------------------------------------------- |
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77 | // Getter methods |
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78 | // ----------------------------------------------------------------------- |
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79 | short getType() const { return fType; } |
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80 | QName* getName() const { return fName; } |
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81 | |
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82 | /*** |
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83 | * Support for Serialization/De-serialization |
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84 | ***/ |
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85 | DECL_XSERIALIZABLE(XercesNodeTest) |
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86 | |
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87 | XercesNodeTest(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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88 | |
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89 | private: |
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90 | // ----------------------------------------------------------------------- |
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91 | // Data members |
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92 | // ----------------------------------------------------------------------- |
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93 | short fType; |
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94 | QName* fName; |
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95 | }; |
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96 | |
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97 | |
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98 | /** |
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99 | * A location path step comprised of an axis and node test. |
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100 | */ |
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101 | class VALIDATORS_EXPORT XercesStep : public XSerializable, public XMemory |
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102 | { |
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103 | public: |
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104 | // ----------------------------------------------------------------------- |
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105 | // Constants |
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106 | // ----------------------------------------------------------------------- |
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107 | enum { // Axis type |
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108 | CHILD = 1, |
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109 | ATTRIBUTE = 2, |
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110 | SELF = 3, |
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111 | DESCENDANT = 4, |
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112 | UNKNOWN |
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113 | }; |
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114 | |
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115 | // ----------------------------------------------------------------------- |
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116 | // Constructors/Destructor |
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117 | // ----------------------------------------------------------------------- |
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118 | XercesStep(const unsigned short axisType, XercesNodeTest* const nodeTest); |
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119 | XercesStep(const XercesStep& other); |
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120 | ~XercesStep() { delete fNodeTest; } |
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121 | |
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122 | // ----------------------------------------------------------------------- |
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123 | // Operators |
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124 | // ----------------------------------------------------------------------- |
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125 | XercesStep& operator= (const XercesStep& other); |
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126 | bool operator== (const XercesStep& other) const; |
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127 | bool operator!= (const XercesStep& other) const; |
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128 | |
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129 | // ----------------------------------------------------------------------- |
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130 | // Getter methods |
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131 | // ----------------------------------------------------------------------- |
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132 | unsigned short getAxisType() const { return fAxisType; } |
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133 | XercesNodeTest* getNodeTest() const { return fNodeTest; } |
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134 | |
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135 | /*** |
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136 | * Support for Serialization/De-serialization |
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137 | ***/ |
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138 | DECL_XSERIALIZABLE(XercesStep) |
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139 | |
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140 | XercesStep(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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141 | |
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142 | private: |
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143 | // ----------------------------------------------------------------------- |
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144 | // Data members |
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145 | // ----------------------------------------------------------------------- |
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146 | unsigned short fAxisType; |
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147 | XercesNodeTest* fNodeTest; |
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148 | }; |
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149 | |
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150 | |
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151 | /** |
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152 | * A location path representation for an XPath expression. |
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153 | */ |
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154 | class VALIDATORS_EXPORT XercesLocationPath : public XSerializable, public XMemory |
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155 | { |
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156 | public: |
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157 | // ----------------------------------------------------------------------- |
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158 | // Constructors/Destructor |
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159 | // ----------------------------------------------------------------------- |
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160 | XercesLocationPath(RefVectorOf<XercesStep>* const steps); |
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161 | ~XercesLocationPath() { delete fSteps; } |
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162 | |
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163 | // ----------------------------------------------------------------------- |
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164 | // Operators |
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165 | // ----------------------------------------------------------------------- |
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166 | bool operator== (const XercesLocationPath& other) const; |
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167 | bool operator!= (const XercesLocationPath& other) const; |
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168 | |
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169 | // ----------------------------------------------------------------------- |
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170 | // Access methods |
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171 | // ----------------------------------------------------------------------- |
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172 | unsigned int getStepSize() const; |
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173 | void addStep(XercesStep* const aStep); |
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174 | XercesStep* getStep(const unsigned int index) const; |
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175 | |
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176 | /*** |
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177 | * Support for Serialization/De-serialization |
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178 | ***/ |
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179 | DECL_XSERIALIZABLE(XercesLocationPath) |
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180 | |
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181 | XercesLocationPath(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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182 | |
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183 | private: |
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184 | // ----------------------------------------------------------------------- |
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185 | // Unimplemented contstructors and operators |
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186 | // ----------------------------------------------------------------------- |
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187 | XercesLocationPath(const XercesLocationPath& other); |
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188 | XercesLocationPath& operator= (const XercesLocationPath& other); |
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189 | |
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190 | // ----------------------------------------------------------------------- |
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191 | // Data members |
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192 | // ----------------------------------------------------------------------- |
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193 | RefVectorOf<XercesStep>* fSteps; |
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194 | }; |
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195 | |
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196 | |
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197 | class VALIDATORS_EXPORT XercesXPath : public XSerializable, public XMemory |
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198 | { |
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199 | public: |
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200 | // ----------------------------------------------------------------------- |
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201 | // Constants |
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202 | // ----------------------------------------------------------------------- |
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203 | /** |
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204 | * [28] ExprToken ::= '(' | ')' | '[' | ']' | '.' | '..' | '@' | ',' | '::' |
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205 | * | NameTest | NodeType | Operator | FunctionName |
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206 | * | AxisName | Literal | Number | VariableReference |
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207 | */ |
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208 | enum { |
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209 | EXPRTOKEN_OPEN_PAREN = 0, |
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210 | EXPRTOKEN_CLOSE_PAREN = 1, |
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211 | EXPRTOKEN_OPEN_BRACKET = 2, |
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212 | EXPRTOKEN_CLOSE_BRACKET = 3, |
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213 | EXPRTOKEN_PERIOD = 4, |
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214 | EXPRTOKEN_DOUBLE_PERIOD = 5, |
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215 | EXPRTOKEN_ATSIGN = 6, |
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216 | EXPRTOKEN_COMMA = 7, |
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217 | EXPRTOKEN_DOUBLE_COLON = 8, |
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218 | EXPRTOKEN_NAMETEST_ANY = 9, |
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219 | EXPRTOKEN_NAMETEST_NAMESPACE = 10, |
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220 | EXPRTOKEN_NAMETEST_QNAME = 11, |
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221 | EXPRTOKEN_NODETYPE_COMMENT = 12, |
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222 | EXPRTOKEN_NODETYPE_TEXT = 13, |
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223 | EXPRTOKEN_NODETYPE_PI = 14, |
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224 | EXPRTOKEN_NODETYPE_NODE = 15, |
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225 | EXPRTOKEN_OPERATOR_AND = 16, |
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226 | EXPRTOKEN_OPERATOR_OR = 17, |
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227 | EXPRTOKEN_OPERATOR_MOD = 18, |
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228 | EXPRTOKEN_OPERATOR_DIV = 19, |
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229 | EXPRTOKEN_OPERATOR_MULT = 20, |
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230 | EXPRTOKEN_OPERATOR_SLASH = 21, |
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231 | EXPRTOKEN_OPERATOR_DOUBLE_SLASH = 22, |
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232 | EXPRTOKEN_OPERATOR_UNION = 23, |
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233 | EXPRTOKEN_OPERATOR_PLUS = 24, |
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234 | EXPRTOKEN_OPERATOR_MINUS = 25, |
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235 | EXPRTOKEN_OPERATOR_EQUAL = 26, |
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236 | EXPRTOKEN_OPERATOR_NOT_EQUAL = 27, |
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237 | EXPRTOKEN_OPERATOR_LESS = 28, |
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238 | EXPRTOKEN_OPERATOR_LESS_EQUAL = 29, |
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239 | EXPRTOKEN_OPERATOR_GREATER = 30, |
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240 | EXPRTOKEN_OPERATOR_GREATER_EQUAL = 31, |
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241 | EXPRTOKEN_FUNCTION_NAME = 32, |
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242 | EXPRTOKEN_AXISNAME_ANCESTOR = 33, |
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243 | EXPRTOKEN_AXISNAME_ANCESTOR_OR_SELF = 34, |
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244 | EXPRTOKEN_AXISNAME_ATTRIBUTE = 35, |
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245 | EXPRTOKEN_AXISNAME_CHILD = 36, |
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246 | EXPRTOKEN_AXISNAME_DESCENDANT = 37, |
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247 | EXPRTOKEN_AXISNAME_DESCENDANT_OR_SELF = 38, |
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248 | EXPRTOKEN_AXISNAME_FOLLOWING = 39, |
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249 | EXPRTOKEN_AXISNAME_FOLLOWING_SIBLING = 40, |
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250 | EXPRTOKEN_AXISNAME_NAMESPACE = 41, |
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251 | EXPRTOKEN_AXISNAME_PARENT = 42, |
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252 | EXPRTOKEN_AXISNAME_PRECEDING = 43, |
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253 | EXPRTOKEN_AXISNAME_PRECEDING_SIBLING = 44, |
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254 | EXPRTOKEN_AXISNAME_SELF = 45, |
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255 | EXPRTOKEN_LITERAL = 46, |
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256 | EXPRTOKEN_NUMBER = 47, |
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257 | EXPRTOKEN_VARIABLE_REFERENCE = 48 |
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258 | }; |
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259 | |
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260 | // ----------------------------------------------------------------------- |
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261 | // Constructors/Destructor |
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262 | // ----------------------------------------------------------------------- |
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263 | XercesXPath(const XMLCh* const xpathExpr, |
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264 | XMLStringPool* const stringPool, |
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265 | NamespaceScope* const scopeContext, |
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266 | const unsigned int emptyNamespaceId, |
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267 | const bool isSelector = false, |
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268 | MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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269 | ~XercesXPath(); |
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270 | |
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271 | // ----------------------------------------------------------------------- |
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272 | // Operators |
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273 | // ----------------------------------------------------------------------- |
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274 | bool operator== (const XercesXPath& other) const; |
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275 | bool operator!= (const XercesXPath& other) const; |
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276 | |
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277 | // ----------------------------------------------------------------------- |
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278 | // Constructors/Destructor |
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279 | // ----------------------------------------------------------------------- |
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280 | RefVectorOf<XercesLocationPath>* getLocationPaths() const; |
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281 | |
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282 | /*** |
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283 | * Support for Serialization/De-serialization |
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284 | ***/ |
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285 | DECL_XSERIALIZABLE(XercesXPath) |
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286 | |
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287 | XercesXPath(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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288 | |
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289 | XMLCh* getExpression(); |
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290 | |
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291 | private: |
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292 | // ----------------------------------------------------------------------- |
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293 | // Unimplemented contstructors and operators |
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294 | // ----------------------------------------------------------------------- |
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295 | XercesXPath(const XercesXPath& other); |
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296 | XercesXPath& operator= (const XercesXPath& other); |
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297 | |
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298 | // ----------------------------------------------------------------------- |
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299 | // Helper methods |
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300 | // ----------------------------------------------------------------------- |
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301 | void cleanUp(); |
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302 | void checkForSelectedAttributes(); |
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303 | void parseExpression(XMLStringPool* const stringPool, |
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304 | NamespaceScope* const scopeContext); |
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305 | |
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306 | // ----------------------------------------------------------------------- |
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307 | // Data members |
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308 | // ----------------------------------------------------------------------- |
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309 | unsigned int fEmptyNamespaceId; |
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310 | XMLCh* fExpression; |
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311 | RefVectorOf<XercesLocationPath>* fLocationPaths; |
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312 | MemoryManager* fMemoryManager; |
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313 | }; |
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314 | |
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315 | |
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316 | class VALIDATORS_EXPORT XPathScanner : public XMemory |
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317 | { |
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318 | public: |
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319 | // ----------------------------------------------------------------------- |
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320 | // Constants |
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321 | // ----------------------------------------------------------------------- |
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322 | enum { |
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323 | CHARTYPE_INVALID = 0, // invalid XML character |
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324 | CHARTYPE_OTHER = 1, // not special - one of "#%&;?\^`{}~" or DEL |
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325 | CHARTYPE_WHITESPACE = 2, // one of "\t\n\r " (0x09, 0x0A, 0x0D, 0x20) |
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326 | CHARTYPE_EXCLAMATION = 3, // '!' (0x21) |
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327 | CHARTYPE_QUOTE = 4, // '\"' or '\'' (0x22 and 0x27) |
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328 | CHARTYPE_DOLLAR = 5, // '$' (0x24) |
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329 | CHARTYPE_OPEN_PAREN = 6, // '(' (0x28) |
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330 | CHARTYPE_CLOSE_PAREN = 7, // ')' (0x29) |
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331 | CHARTYPE_STAR = 8, // '*' (0x2A) |
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332 | CHARTYPE_PLUS = 9, // '+' (0x2B) |
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333 | CHARTYPE_COMMA = 10, // ',' (0x2C) |
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334 | CHARTYPE_MINUS = 11, // '-' (0x2D) |
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335 | CHARTYPE_PERIOD = 12, // '.' (0x2E) |
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336 | CHARTYPE_SLASH = 13, // '/' (0x2F) |
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337 | CHARTYPE_DIGIT = 14, // '0'-'9' (0x30 to 0x39) |
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338 | CHARTYPE_COLON = 15, // ':' (0x3A) |
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339 | CHARTYPE_LESS = 16, // '<' (0x3C) |
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340 | CHARTYPE_EQUAL = 17, // '=' (0x3D) |
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341 | CHARTYPE_GREATER = 18, // '>' (0x3E) |
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342 | CHARTYPE_ATSIGN = 19, // '@' (0x40) |
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343 | CHARTYPE_LETTER = 20, // 'A'-'Z' or 'a'-'z' (0x41 to 0x5A and 0x61 to 0x7A) |
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344 | CHARTYPE_OPEN_BRACKET = 21, // '[' (0x5B) |
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345 | CHARTYPE_CLOSE_BRACKET = 22, // ']' (0x5D) |
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346 | CHARTYPE_UNDERSCORE = 23, // '_' (0x5F) |
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347 | CHARTYPE_UNION = 24, // '|' (0x7C) |
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348 | CHARTYPE_NONASCII = 25 // Non-ASCII Unicode codepoint (>= 0x80) |
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349 | }; |
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350 | |
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351 | // ----------------------------------------------------------------------- |
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352 | // Constructors/Destructor |
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353 | // ----------------------------------------------------------------------- |
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354 | XPathScanner(XMLStringPool* const stringPool); |
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355 | virtual ~XPathScanner() {} |
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356 | |
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357 | // ----------------------------------------------------------------------- |
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358 | // Scan methods |
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359 | // ----------------------------------------------------------------------- |
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360 | bool scanExpression(const XMLCh* const data, int currentOffset, |
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361 | const int endOffset, ValueVectorOf<int>* const tokens); |
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362 | |
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363 | protected: |
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364 | // ----------------------------------------------------------------------- |
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365 | // Helper methods |
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366 | // ----------------------------------------------------------------------- |
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367 | /** |
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368 | * This method adds the specified token to the token list. By default, |
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369 | * this method allows all tokens. However, subclasses can can override |
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370 | * this method in order to disallow certain tokens from being used in the |
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371 | * scanned XPath expression. This is a convenient way of allowing only |
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372 | * a subset of XPath. |
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373 | */ |
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374 | virtual void addToken(ValueVectorOf<int>* const tokens, const int aToken); |
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375 | |
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376 | private: |
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377 | // ----------------------------------------------------------------------- |
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378 | // Unimplemented contstructors and operators |
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379 | // ----------------------------------------------------------------------- |
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380 | XPathScanner(const XPathScanner& other); |
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381 | XPathScanner& operator= (const XPathScanner& other); |
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382 | |
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383 | // ----------------------------------------------------------------------- |
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384 | // Helper methods |
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385 | // ----------------------------------------------------------------------- |
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386 | void init(); |
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387 | |
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388 | // ----------------------------------------------------------------------- |
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389 | // Scan methods |
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390 | // ----------------------------------------------------------------------- |
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391 | int scanNCName(const XMLCh* const data, const int endOffset, |
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392 | int currentOffset); |
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393 | int scanNumber(const XMLCh* const data, const int endOffset, |
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394 | int currentOffset, ValueVectorOf<int>* const tokens); |
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395 | |
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396 | // ----------------------------------------------------------------------- |
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397 | // Data members |
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398 | // ----------------------------------------------------------------------- |
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399 | int fAndSymbol; |
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400 | int fOrSymbol; |
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401 | int fModSymbol; |
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402 | int fDivSymbol; |
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403 | int fCommentSymbol; |
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404 | int fTextSymbol; |
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405 | int fPISymbol; |
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406 | int fNodeSymbol; |
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407 | int fAncestorSymbol; |
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408 | int fAncestorOrSelfSymbol; |
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409 | int fAttributeSymbol; |
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410 | int fChildSymbol; |
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411 | int fDescendantSymbol; |
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412 | int fDescendantOrSelfSymbol; |
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413 | int fFollowingSymbol; |
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414 | int fFollowingSiblingSymbol; |
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415 | int fNamespaceSymbol; |
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416 | int fParentSymbol; |
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417 | int fPrecedingSymbol; |
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418 | int fPrecedingSiblingSymbol; |
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419 | int fSelfSymbol; |
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420 | XMLStringPool* fStringPool; |
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421 | |
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422 | static const XMLByte fASCIICharMap[128]; |
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423 | }; |
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424 | |
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425 | |
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426 | class VALIDATORS_EXPORT XPathScannerForSchema: public XPathScanner |
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427 | { |
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428 | public: |
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429 | // ----------------------------------------------------------------------- |
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430 | // Constructors/Destructor |
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431 | // ----------------------------------------------------------------------- |
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432 | XPathScannerForSchema(XMLStringPool* const stringPool); |
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433 | ~XPathScannerForSchema() {} |
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434 | |
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435 | protected: |
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436 | // ----------------------------------------------------------------------- |
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437 | // Helper methods |
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438 | // ----------------------------------------------------------------------- |
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439 | void addToken(ValueVectorOf<int>* const tokens, const int aToken); |
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440 | |
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441 | private: |
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442 | // ----------------------------------------------------------------------- |
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443 | // Unimplemented contstructors and operators |
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444 | // ----------------------------------------------------------------------- |
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445 | XPathScannerForSchema(const XPathScannerForSchema& other); |
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446 | XPathScannerForSchema& operator= (const XPathScannerForSchema& other); |
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447 | }; |
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448 | |
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449 | // --------------------------------------------------------------------------- |
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450 | // XercesLocationPath: Access methods |
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451 | // --------------------------------------------------------------------------- |
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452 | inline unsigned int XercesLocationPath::getStepSize() const { |
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453 | |
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454 | if (fSteps) |
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455 | return fSteps->size(); |
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456 | |
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457 | return 0; |
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458 | } |
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459 | |
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460 | inline void XercesLocationPath::addStep(XercesStep* const aStep) { |
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461 | |
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462 | fSteps->addElement(aStep); |
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463 | } |
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464 | |
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465 | inline XercesStep* XercesLocationPath::getStep(const unsigned int index) const { |
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466 | |
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467 | if (fSteps) |
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468 | return fSteps->elementAt(index); |
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469 | |
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470 | return 0; |
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471 | } |
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472 | |
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473 | // --------------------------------------------------------------------------- |
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474 | // XercesScanner: Helper methods |
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475 | // --------------------------------------------------------------------------- |
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476 | inline void XPathScanner::addToken(ValueVectorOf<int>* const tokens, |
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477 | const int aToken) { |
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478 | tokens->addElement(aToken); |
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479 | } |
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480 | |
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481 | |
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482 | // --------------------------------------------------------------------------- |
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483 | // XercesXPath: Getter methods |
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484 | // --------------------------------------------------------------------------- |
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485 | inline RefVectorOf<XercesLocationPath>* XercesXPath::getLocationPaths() const { |
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486 | |
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487 | return fLocationPaths; |
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488 | } |
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489 | |
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490 | inline XMLCh* XercesXPath::getExpression() { |
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491 | return fExpression; |
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492 | } |
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493 | |
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494 | XERCES_CPP_NAMESPACE_END |
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495 | |
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496 | #endif |
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497 | |
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498 | /** |
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499 | * End of file XercesPath.hpp |
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500 | */ |
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501 | |
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