1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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6 | **
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7 | ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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15 | **
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16 | ** GNU Lesser General Public License Usage
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17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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18 | ** General Public License version 2.1 as published by the Free Software
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19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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20 | ** packaging of this file. Please review the following information to
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21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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23 | **
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24 | ** In addition, as a special exception, Nokia gives you certain additional
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25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #ifndef QABSTRACTXMLNODEMODEL_H
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43 | #define QABSTRACTXMLNODEMODEL_H
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44 |
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45 | #include <QtXmlPatterns/QXmlName>
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46 | #include <QtCore/QSharedData>
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47 | #include <QtCore/QScopedPointer>
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48 |
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49 | QT_BEGIN_HEADER
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50 | QT_BEGIN_NAMESPACE
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51 |
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52 | QT_MODULE(XmlPatterns)
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53 |
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54 | /* This file contains the classes QXmlNodeModelIndex, QAbstractXmlNodeModel,
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55 | * QXmlItem and QPatternist::NodeIndexStorage. */
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56 |
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57 | class QAbstractXmlNodeModel;
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58 | class QAbstractXmlNodeModelPrivate;
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59 | class QAbstractXmlReceiver;
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60 | class QSourceLocation;
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61 | class QUrl;
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62 | class QXmlName;
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63 | class QXmlNodeModelIndex;
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64 | template<typename T> class QAbstractXmlForwardIterator;
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65 | template<typename T> class QVector;
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66 |
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67 | /* The members in the namespace QPatternist are internal, not part of the public API, and
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68 | * unsupported. Using them leads to undefined behavior. */
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69 | namespace QPatternist
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70 | {
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71 | class DynamicContext;
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72 | class Item;
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73 | class ItemType;
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74 | class XsdValidatedXmlNodeModel;
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75 | template<typename TResult, typename TSource, typename TMapper, typename Context> class ItemMappingIterator;
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76 | template<typename TResult, typename TSource, typename TMapper> class SequenceMappingIterator;
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77 | typedef QExplicitlySharedDataPointer<ItemType> ItemTypePtr;
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78 | typedef QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<Item> > ItemIteratorPtr;
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79 | typedef QVector<QXmlName> QXmlNameVector;
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80 |
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81 | class NodeIndexStorage
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82 | {
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83 | public:
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84 | typedef qint64 Data;
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85 |
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86 | /*!
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87 | \note Changing merely the order of these two members, ptr and data,
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88 | is a binary incompatible change on Mac Power PC.
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89 | */
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90 | union
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91 | {
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92 | void *ptr; // Do not use ptr directy, use pointer() instead.
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93 | Data data;
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94 | };
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95 | void *pointer() const
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96 | {
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97 | /* Constructing to qptrdiff means we avoid the warning "cast to pointer
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98 | * from integer of different size."
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99 | */
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100 | return (void *)qptrdiff(data);
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101 | }
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102 |
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103 | Data additionalData;
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104 | const QAbstractXmlNodeModel *model;
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105 |
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106 | /* Implementation is in qabstractxmlnodemodel.cpp. */
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107 | inline bool operator!=(const NodeIndexStorage &other) const;
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108 | };
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109 | }
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110 |
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111 | class Q_XMLPATTERNS_EXPORT QXmlNodeModelIndex
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112 | {
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113 | enum Constants
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114 | {
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115 | ForwardAxis = 8192,
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116 | ReverseAxis = 16384
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117 | };
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118 |
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119 | public:
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120 | inline QXmlNodeModelIndex()
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121 | {
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122 | reset();
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123 | }
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124 |
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125 | inline QXmlNodeModelIndex(const QXmlNodeModelIndex &other) : m_storage(other.m_storage)
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126 | {
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127 | }
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128 |
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129 | bool operator==(const QXmlNodeModelIndex &other) const;
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130 | bool operator!=(const QXmlNodeModelIndex &other) const;
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131 |
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132 | typedef QAbstractXmlForwardIterator<QXmlNodeModelIndex> Iterator;
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133 | typedef QList<QXmlNodeModelIndex> List;
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134 |
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135 | enum NodeKind
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136 | {
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137 | Attribute = 1,
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138 | Comment = 2,
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139 | Document = 4,
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140 | Element = 8,
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141 | Namespace = 16,
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142 | ProcessingInstruction = 32,
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143 | Text = 64
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144 | };
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145 |
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146 | enum DocumentOrder
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147 | {
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148 | Precedes = -1,
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149 | Is = 0,
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150 | Follows = 1
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151 | };
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152 |
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153 | enum Axis
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154 | {
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155 | AxisChild = 1 | ForwardAxis,
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156 | AxisDescendant = 2 | ForwardAxis,
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157 | AxisAttribute = 4 | ForwardAxis,
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158 | AxisSelf = 8 | ForwardAxis,
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159 | AxisDescendantOrSelf = 16 | ForwardAxis,
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160 | AxisFollowingSibling = 32 | ForwardAxis,
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161 | AxisNamespace = 64 | ForwardAxis,
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162 | AxisFollowing = 128 | ReverseAxis,
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163 | AxisParent = 256 | ReverseAxis,
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164 | AxisAncestor = 512 | ReverseAxis,
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165 | AxisPrecedingSibling = 1024 | ReverseAxis,
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166 | AxisPreceding = 2048 | ReverseAxis,
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167 | AxisAncestorOrSelf = 4096 | ReverseAxis,
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168 | /* Note that we cannot clash with the values of ForwardAxis and
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169 | * ReverseAxis. */
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170 | AxisChildOrTop = 32768 | ForwardAxis,
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171 | AxisAttributeOrTop = 65536 | ForwardAxis
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172 | };
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173 |
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174 | inline qint64 data() const
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175 | {
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176 | return m_storage.data;
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177 | }
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178 |
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179 | inline void *internalPointer() const
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180 | {
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181 | return m_storage.pointer();
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182 | }
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183 |
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184 | inline const QAbstractXmlNodeModel *model() const
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185 | {
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186 | return m_storage.model;
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187 | }
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188 |
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189 | inline qint64 additionalData() const
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190 | {
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191 | return m_storage.additionalData;
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192 | }
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193 |
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194 | inline bool isNull() const
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195 | {
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196 | return !m_storage.model;
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197 | }
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198 |
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199 | /* The members below are internal, not part of the public API, and
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200 | * unsupported. Using them leads to undefined behavior. */
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201 |
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202 | inline QXmlName name() const;
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203 | inline QXmlNodeModelIndex root() const;
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204 | inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const Axis axis) const;
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205 | inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QPatternist::Item> > sequencedTypedValue() const;
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206 | inline QUrl documentUri() const;
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207 | inline QUrl baseUri() const;
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208 | inline NodeKind kind() const;
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209 | inline bool isDeepEqual(const QXmlNodeModelIndex &other) const;
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210 | inline DocumentOrder compareOrder(const QXmlNodeModelIndex &other) const;
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211 | inline void sendNamespaces(QAbstractXmlReceiver *const receiver) const;
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212 | inline QVector<QXmlName> namespaceBindings() const;
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213 | inline QXmlName::NamespaceCode namespaceForPrefix(const QXmlName::PrefixCode prefix) const;
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214 | inline QString stringValue() const;
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215 | inline QPatternist::ItemTypePtr type() const;
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216 | inline bool is(const QXmlNodeModelIndex &other) const;
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217 |
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218 | inline void reset()
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219 | {
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220 | m_storage.data = 0;
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221 | m_storage.additionalData = 0;
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222 | m_storage.model = 0;
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223 | }
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224 |
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225 | private:
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226 | static inline QXmlNodeModelIndex create(const qint64 d,
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227 | const QAbstractXmlNodeModel *const nm)
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228 | {
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229 | QXmlNodeModelIndex n;
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230 | n.m_storage.data = d;
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231 | n.m_storage.model = nm;
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232 | n.m_storage.additionalData = 0;
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233 | return n;
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234 | }
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235 |
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236 | static inline QXmlNodeModelIndex create(const qint64 data,
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237 | const QAbstractXmlNodeModel *const nm,
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238 | const qint64 addData)
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239 | {
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240 | QXmlNodeModelIndex n;
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241 | n.m_storage.data = data;
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242 | n.m_storage.model = nm;
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243 | n.m_storage.additionalData = addData;
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244 | return n;
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245 | }
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246 |
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247 | inline QXmlNodeModelIndex(const QPatternist::NodeIndexStorage &storage) : m_storage(storage)
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248 | {
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249 | }
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250 |
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251 | friend class QAbstractXmlNodeModel;
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252 | friend class QPatternist::Item;
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253 | friend class QXmlItem;
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254 | inline operator int() const; // Disable
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255 |
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256 | QPatternist::NodeIndexStorage m_storage;
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257 | };
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258 |
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259 | Q_XMLPATTERNS_EXPORT uint qHash(const QXmlNodeModelIndex &index);
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260 |
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261 | inline bool qIsForwardIteratorEnd(const QXmlNodeModelIndex &item)
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262 | {
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263 | return item.isNull();
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264 | }
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265 |
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266 | class Q_XMLPATTERNS_EXPORT QAbstractXmlNodeModel : public QSharedData
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267 | {
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268 | public:
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269 | enum SimpleAxis
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270 | {
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271 | Parent,
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272 | FirstChild,
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273 | PreviousSibling,
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274 | NextSibling
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275 | };
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276 |
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277 | typedef QExplicitlySharedDataPointer<QAbstractXmlNodeModel> Ptr;
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278 | typedef QList<Ptr> List;
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279 |
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280 | QAbstractXmlNodeModel();
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281 | virtual ~QAbstractXmlNodeModel();
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282 |
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283 | virtual QUrl baseUri(const QXmlNodeModelIndex &ni) const = 0;
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284 | virtual QUrl documentUri(const QXmlNodeModelIndex &ni) const = 0;
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285 | virtual QXmlNodeModelIndex::NodeKind kind(const QXmlNodeModelIndex &ni) const = 0;
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286 | virtual QXmlNodeModelIndex::DocumentOrder compareOrder(const QXmlNodeModelIndex &ni1,
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287 | const QXmlNodeModelIndex &ni2) const = 0;
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288 | virtual QXmlNodeModelIndex root(const QXmlNodeModelIndex &n) const = 0;
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289 | virtual QXmlName name(const QXmlNodeModelIndex &ni) const = 0;
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290 | virtual QString stringValue(const QXmlNodeModelIndex &n) const = 0;
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291 | virtual QVariant typedValue(const QXmlNodeModelIndex &n) const = 0;
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292 |
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293 | /* The members below are internal, not part of the public API, and
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294 | * unsupported. Using them leads to undefined behavior. */
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295 | virtual QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const QXmlNodeModelIndex &ni, QXmlNodeModelIndex::Axis axis) const;
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296 | virtual QPatternist::ItemIteratorPtr sequencedTypedValue(const QXmlNodeModelIndex &ni) const;
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297 | virtual QPatternist::ItemTypePtr type(const QXmlNodeModelIndex &ni) const;
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298 | virtual QXmlName::NamespaceCode namespaceForPrefix(const QXmlNodeModelIndex &ni,
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299 | const QXmlName::PrefixCode prefix) const;
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300 | virtual bool isDeepEqual(const QXmlNodeModelIndex &ni1,
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301 | const QXmlNodeModelIndex &ni2) const;
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302 | virtual void sendNamespaces(const QXmlNodeModelIndex &n,
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303 | QAbstractXmlReceiver *const receiver) const;
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304 | virtual QVector<QXmlName> namespaceBindings(const QXmlNodeModelIndex &n) const = 0;
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305 |
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306 |
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307 | virtual QXmlNodeModelIndex elementById(const QXmlName &NCName) const = 0;
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308 | virtual QVector<QXmlNodeModelIndex> nodesByIdref(const QXmlName &NCName) const = 0;
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309 |
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310 | enum NodeCopySetting
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311 | {
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312 | InheritNamespaces = 0x1,
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313 | PreserveNamespaces = 0x2
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314 | };
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315 |
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316 | typedef QFlags<NodeCopySetting> NodeCopySettings;
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317 | virtual void copyNodeTo(const QXmlNodeModelIndex &node,
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318 | QAbstractXmlReceiver *const receiver,
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319 | const NodeCopySettings &) const;
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320 |
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321 | QSourceLocation sourceLocation(const QXmlNodeModelIndex &index) const;
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322 |
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323 | protected:
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324 |
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325 | virtual QXmlNodeModelIndex nextFromSimpleAxis(SimpleAxis axis, const QXmlNodeModelIndex &origin) const = 0;
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326 | virtual QVector<QXmlNodeModelIndex> attributes(const QXmlNodeModelIndex &element) const = 0;
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327 |
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328 | QAbstractXmlNodeModel(QAbstractXmlNodeModelPrivate *d);
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329 |
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330 | inline QXmlNodeModelIndex createIndex(qint64 data) const
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331 | {
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332 | return QXmlNodeModelIndex::create(data, this);
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333 | }
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334 |
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335 | inline QXmlNodeModelIndex createIndex(void * pointer,
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336 | qint64 additionalData = 0) const
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337 | {
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338 | return QXmlNodeModelIndex::create(qptrdiff(pointer), this, additionalData);
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339 | }
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340 |
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341 | inline QXmlNodeModelIndex createIndex(qint64 data,
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342 | qint64 additionalData) const
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343 | {
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344 | return QXmlNodeModelIndex::create(data, this, additionalData);
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345 | }
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346 |
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347 | QScopedPointer<QAbstractXmlNodeModelPrivate> d_ptr;
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348 | private:
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349 | friend class QPatternist::ItemMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *, QExplicitlySharedDataPointer<QPatternist::DynamicContext> >;
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350 | friend class QPatternist::SequenceMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *>;
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351 | friend class QPatternist::XsdValidatedXmlNodeModel;
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352 |
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353 | inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > mapToSequence(const QXmlNodeModelIndex &ni,
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354 | const QExplicitlySharedDataPointer<QPatternist::DynamicContext> &) const;
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355 |
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356 | static inline bool isIgnorableInDeepEqual(const QXmlNodeModelIndex &n);
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357 | Q_DISABLE_COPY(QAbstractXmlNodeModel)
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358 | };
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359 |
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360 | Q_DECLARE_TYPEINFO(QXmlNodeModelIndex, Q_MOVABLE_TYPE);
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361 |
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362 | template<typename T> class QAbstractXmlForwardIterator;
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363 | class QVariant;
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364 | class QXmlItemPrivate;
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365 |
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366 | namespace QPatternist
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367 | {
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368 | class AtomicValue;
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369 | class VariableLoader;
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370 | class IteratorBridge;
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371 | class ToQXmlItemMapper;
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372 | class ToItemMapper;
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373 | }
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374 |
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375 | class Q_XMLPATTERNS_EXPORT QXmlItem
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376 | {
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377 | public:
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378 | typedef QAbstractXmlForwardIterator<QXmlItem> Iterator;
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379 |
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380 | QXmlItem();
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381 | QXmlItem(const QXmlItem &other);
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382 | QXmlItem(const QXmlNodeModelIndex &node);
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383 | QXmlItem(const QVariant &atomicValue);
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384 | ~QXmlItem();
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385 | QXmlItem &operator=(const QXmlItem &other);
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386 |
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387 | bool isNull() const;
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388 | bool isNode() const;
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389 | bool isAtomicValue() const;
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390 |
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391 | QVariant toAtomicValue() const;
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392 | QXmlNodeModelIndex toNodeModelIndex() const;
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393 |
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394 | private:
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395 | friend class QPatternist::IteratorBridge;
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396 | friend class QPatternist::VariableLoader;
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397 | friend class QPatternist::ToQXmlItemMapper;
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398 | friend class QPatternist::ToItemMapper;
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399 | friend class QPatternist::Item;
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400 |
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401 | inline bool internalIsAtomicValue() const;
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402 |
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403 | inline QXmlItem(const QPatternist::Item &i);
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404 |
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405 | union
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406 | {
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407 | QPatternist::NodeIndexStorage m_node;
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408 |
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409 | /* These two sits at the position of NodeIndexStorage::data.
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410 | * NodeIndexStorage::{additionalData,model} are free. */
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411 | const QPatternist::AtomicValue *m_atomicValue;
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412 | QXmlItemPrivate * m_ptr; /* Not currently used. */
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413 | };
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414 | };
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415 |
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416 | inline bool qIsForwardIteratorEnd(const QXmlItem &item)
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417 | {
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418 | return item.isNull();
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419 | }
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420 |
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421 | Q_DECLARE_TYPEINFO(QXmlItem, Q_MOVABLE_TYPE);
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422 |
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423 | QT_END_NAMESPACE
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424 |
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425 | Q_DECLARE_METATYPE(QXmlItem) /* This macro must appear after QT_END_NAMESPACE. */
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426 |
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427 | QT_END_HEADER
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428 |
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429 | #endif
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