source: trunk/src/xmlpatterns/api/qabstractxmlnodemodel.h@ 1063

Last change on this file since 1063 was 846, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 14.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QABSTRACTXMLNODEMODEL_H
43#define QABSTRACTXMLNODEMODEL_H
44
45#include <QtXmlPatterns/QXmlName>
46#include <QtCore/QSharedData>
47#include <QtCore/QScopedPointer>
48
49QT_BEGIN_HEADER
50QT_BEGIN_NAMESPACE
51
52QT_MODULE(XmlPatterns)
53
54/* This file contains the classes QXmlNodeModelIndex, QAbstractXmlNodeModel,
55 * QXmlItem and QPatternist::NodeIndexStorage. */
56
57class QAbstractXmlNodeModel;
58class QAbstractXmlNodeModelPrivate;
59class QAbstractXmlReceiver;
60class QSourceLocation;
61class QUrl;
62class QXmlName;
63class QXmlNodeModelIndex;
64template<typename T> class QAbstractXmlForwardIterator;
65template<typename T> class QVector;
66
67/* The members in the namespace QPatternist are internal, not part of the public API, and
68 * unsupported. Using them leads to undefined behavior. */
69namespace QPatternist
70{
71 class DynamicContext;
72 class Item;
73 class ItemType;
74 class XsdValidatedXmlNodeModel;
75 template<typename TResult, typename TSource, typename TMapper, typename Context> class ItemMappingIterator;
76 template<typename TResult, typename TSource, typename TMapper> class SequenceMappingIterator;
77 typedef QExplicitlySharedDataPointer<ItemType> ItemTypePtr;
78 typedef QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<Item> > ItemIteratorPtr;
79 typedef QVector<QXmlName> QXmlNameVector;
80
81 class NodeIndexStorage
82 {
83 public:
84 typedef qint64 Data;
85
86 /*!
87 \note Changing merely the order of these two members, ptr and data,
88 is a binary incompatible change on Mac Power PC.
89 */
90 union
91 {
92 void *ptr; // Do not use ptr directy, use pointer() instead.
93 Data data;
94 };
95 void *pointer() const
96 {
97 /* Constructing to qptrdiff means we avoid the warning "cast to pointer
98 * from integer of different size."
99 */
100 return (void *)qptrdiff(data);
101 }
102
103 Data additionalData;
104 const QAbstractXmlNodeModel *model;
105
106 /* Implementation is in qabstractxmlnodemodel.cpp. */
107 inline bool operator!=(const NodeIndexStorage &other) const;
108 };
109}
110
111class Q_XMLPATTERNS_EXPORT QXmlNodeModelIndex
112{
113 enum Constants
114 {
115 ForwardAxis = 8192,
116 ReverseAxis = 16384
117 };
118
119public:
120 inline QXmlNodeModelIndex()
121 {
122 reset();
123 }
124
125 inline QXmlNodeModelIndex(const QXmlNodeModelIndex &other) : m_storage(other.m_storage)
126 {
127 }
128
129 bool operator==(const QXmlNodeModelIndex &other) const;
130 bool operator!=(const QXmlNodeModelIndex &other) const;
131
132 typedef QAbstractXmlForwardIterator<QXmlNodeModelIndex> Iterator;
133 typedef QList<QXmlNodeModelIndex> List;
134
135 enum NodeKind
136 {
137 Attribute = 1,
138 Comment = 2,
139 Document = 4,
140 Element = 8,
141 Namespace = 16,
142 ProcessingInstruction = 32,
143 Text = 64
144 };
145
146 enum DocumentOrder
147 {
148 Precedes = -1,
149 Is = 0,
150 Follows = 1
151 };
152
153 enum Axis
154 {
155 AxisChild = 1 | ForwardAxis,
156 AxisDescendant = 2 | ForwardAxis,
157 AxisAttribute = 4 | ForwardAxis,
158 AxisSelf = 8 | ForwardAxis,
159 AxisDescendantOrSelf = 16 | ForwardAxis,
160 AxisFollowingSibling = 32 | ForwardAxis,
161 AxisNamespace = 64 | ForwardAxis,
162 AxisFollowing = 128 | ReverseAxis,
163 AxisParent = 256 | ReverseAxis,
164 AxisAncestor = 512 | ReverseAxis,
165 AxisPrecedingSibling = 1024 | ReverseAxis,
166 AxisPreceding = 2048 | ReverseAxis,
167 AxisAncestorOrSelf = 4096 | ReverseAxis,
168 /* Note that we cannot clash with the values of ForwardAxis and
169 * ReverseAxis. */
170 AxisChildOrTop = 32768 | ForwardAxis,
171 AxisAttributeOrTop = 65536 | ForwardAxis
172 };
173
174 inline qint64 data() const
175 {
176 return m_storage.data;
177 }
178
179 inline void *internalPointer() const
180 {
181 return m_storage.pointer();
182 }
183
184 inline const QAbstractXmlNodeModel *model() const
185 {
186 return m_storage.model;
187 }
188
189 inline qint64 additionalData() const
190 {
191 return m_storage.additionalData;
192 }
193
194 inline bool isNull() const
195 {
196 return !m_storage.model;
197 }
198
199 /* The members below are internal, not part of the public API, and
200 * unsupported. Using them leads to undefined behavior. */
201
202 inline QXmlName name() const;
203 inline QXmlNodeModelIndex root() const;
204 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const Axis axis) const;
205 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QPatternist::Item> > sequencedTypedValue() const;
206 inline QUrl documentUri() const;
207 inline QUrl baseUri() const;
208 inline NodeKind kind() const;
209 inline bool isDeepEqual(const QXmlNodeModelIndex &other) const;
210 inline DocumentOrder compareOrder(const QXmlNodeModelIndex &other) const;
211 inline void sendNamespaces(QAbstractXmlReceiver *const receiver) const;
212 inline QVector<QXmlName> namespaceBindings() const;
213 inline QXmlName::NamespaceCode namespaceForPrefix(const QXmlName::PrefixCode prefix) const;
214 inline QString stringValue() const;
215 inline QPatternist::ItemTypePtr type() const;
216 inline bool is(const QXmlNodeModelIndex &other) const;
217
218 inline void reset()
219 {
220 m_storage.data = 0;
221 m_storage.additionalData = 0;
222 m_storage.model = 0;
223 }
224
225private:
226 static inline QXmlNodeModelIndex create(const qint64 d,
227 const QAbstractXmlNodeModel *const nm)
228 {
229 QXmlNodeModelIndex n;
230 n.m_storage.data = d;
231 n.m_storage.model = nm;
232 n.m_storage.additionalData = 0;
233 return n;
234 }
235
236 static inline QXmlNodeModelIndex create(const qint64 data,
237 const QAbstractXmlNodeModel *const nm,
238 const qint64 addData)
239 {
240 QXmlNodeModelIndex n;
241 n.m_storage.data = data;
242 n.m_storage.model = nm;
243 n.m_storage.additionalData = addData;
244 return n;
245 }
246
247 inline QXmlNodeModelIndex(const QPatternist::NodeIndexStorage &storage) : m_storage(storage)
248 {
249 }
250
251 friend class QAbstractXmlNodeModel;
252 friend class QPatternist::Item;
253 friend class QXmlItem;
254 inline operator int() const; // Disable
255
256 QPatternist::NodeIndexStorage m_storage;
257};
258
259Q_XMLPATTERNS_EXPORT uint qHash(const QXmlNodeModelIndex &index);
260
261inline bool qIsForwardIteratorEnd(const QXmlNodeModelIndex &item)
262{
263 return item.isNull();
264}
265
266class Q_XMLPATTERNS_EXPORT QAbstractXmlNodeModel : public QSharedData
267{
268public:
269 enum SimpleAxis
270 {
271 Parent,
272 FirstChild,
273 PreviousSibling,
274 NextSibling
275 };
276
277 typedef QExplicitlySharedDataPointer<QAbstractXmlNodeModel> Ptr;
278 typedef QList<Ptr> List;
279
280 QAbstractXmlNodeModel();
281 virtual ~QAbstractXmlNodeModel();
282
283 virtual QUrl baseUri(const QXmlNodeModelIndex &ni) const = 0;
284 virtual QUrl documentUri(const QXmlNodeModelIndex &ni) const = 0;
285 virtual QXmlNodeModelIndex::NodeKind kind(const QXmlNodeModelIndex &ni) const = 0;
286 virtual QXmlNodeModelIndex::DocumentOrder compareOrder(const QXmlNodeModelIndex &ni1,
287 const QXmlNodeModelIndex &ni2) const = 0;
288 virtual QXmlNodeModelIndex root(const QXmlNodeModelIndex &n) const = 0;
289 virtual QXmlName name(const QXmlNodeModelIndex &ni) const = 0;
290 virtual QString stringValue(const QXmlNodeModelIndex &n) const = 0;
291 virtual QVariant typedValue(const QXmlNodeModelIndex &n) const = 0;
292
293 /* The members below are internal, not part of the public API, and
294 * unsupported. Using them leads to undefined behavior. */
295 virtual QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const QXmlNodeModelIndex &ni, QXmlNodeModelIndex::Axis axis) const;
296 virtual QPatternist::ItemIteratorPtr sequencedTypedValue(const QXmlNodeModelIndex &ni) const;
297 virtual QPatternist::ItemTypePtr type(const QXmlNodeModelIndex &ni) const;
298 virtual QXmlName::NamespaceCode namespaceForPrefix(const QXmlNodeModelIndex &ni,
299 const QXmlName::PrefixCode prefix) const;
300 virtual bool isDeepEqual(const QXmlNodeModelIndex &ni1,
301 const QXmlNodeModelIndex &ni2) const;
302 virtual void sendNamespaces(const QXmlNodeModelIndex &n,
303 QAbstractXmlReceiver *const receiver) const;
304 virtual QVector<QXmlName> namespaceBindings(const QXmlNodeModelIndex &n) const = 0;
305
306
307 virtual QXmlNodeModelIndex elementById(const QXmlName &NCName) const = 0;
308 virtual QVector<QXmlNodeModelIndex> nodesByIdref(const QXmlName &NCName) const = 0;
309
310 enum NodeCopySetting
311 {
312 InheritNamespaces = 0x1,
313 PreserveNamespaces = 0x2
314 };
315
316 typedef QFlags<NodeCopySetting> NodeCopySettings;
317 virtual void copyNodeTo(const QXmlNodeModelIndex &node,
318 QAbstractXmlReceiver *const receiver,
319 const NodeCopySettings &) const;
320
321 QSourceLocation sourceLocation(const QXmlNodeModelIndex &index) const;
322
323protected:
324
325 virtual QXmlNodeModelIndex nextFromSimpleAxis(SimpleAxis axis, const QXmlNodeModelIndex &origin) const = 0;
326 virtual QVector<QXmlNodeModelIndex> attributes(const QXmlNodeModelIndex &element) const = 0;
327
328 QAbstractXmlNodeModel(QAbstractXmlNodeModelPrivate *d);
329
330 inline QXmlNodeModelIndex createIndex(qint64 data) const
331 {
332 return QXmlNodeModelIndex::create(data, this);
333 }
334
335 inline QXmlNodeModelIndex createIndex(void * pointer,
336 qint64 additionalData = 0) const
337 {
338 return QXmlNodeModelIndex::create(qptrdiff(pointer), this, additionalData);
339 }
340
341 inline QXmlNodeModelIndex createIndex(qint64 data,
342 qint64 additionalData) const
343 {
344 return QXmlNodeModelIndex::create(data, this, additionalData);
345 }
346
347 QScopedPointer<QAbstractXmlNodeModelPrivate> d_ptr;
348private:
349 friend class QPatternist::ItemMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *, QExplicitlySharedDataPointer<QPatternist::DynamicContext> >;
350 friend class QPatternist::SequenceMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *>;
351 friend class QPatternist::XsdValidatedXmlNodeModel;
352
353 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > mapToSequence(const QXmlNodeModelIndex &ni,
354 const QExplicitlySharedDataPointer<QPatternist::DynamicContext> &) const;
355
356 static inline bool isIgnorableInDeepEqual(const QXmlNodeModelIndex &n);
357 Q_DISABLE_COPY(QAbstractXmlNodeModel)
358};
359
360Q_DECLARE_TYPEINFO(QXmlNodeModelIndex, Q_MOVABLE_TYPE);
361
362template<typename T> class QAbstractXmlForwardIterator;
363class QVariant;
364class QXmlItemPrivate;
365
366namespace QPatternist
367{
368 class AtomicValue;
369 class VariableLoader;
370 class IteratorBridge;
371 class ToQXmlItemMapper;
372 class ToItemMapper;
373}
374
375class Q_XMLPATTERNS_EXPORT QXmlItem
376{
377public:
378 typedef QAbstractXmlForwardIterator<QXmlItem> Iterator;
379
380 QXmlItem();
381 QXmlItem(const QXmlItem &other);
382 QXmlItem(const QXmlNodeModelIndex &node);
383 QXmlItem(const QVariant &atomicValue);
384 ~QXmlItem();
385 QXmlItem &operator=(const QXmlItem &other);
386
387 bool isNull() const;
388 bool isNode() const;
389 bool isAtomicValue() const;
390
391 QVariant toAtomicValue() const;
392 QXmlNodeModelIndex toNodeModelIndex() const;
393
394private:
395 friend class QPatternist::IteratorBridge;
396 friend class QPatternist::VariableLoader;
397 friend class QPatternist::ToQXmlItemMapper;
398 friend class QPatternist::ToItemMapper;
399 friend class QPatternist::Item;
400
401 inline bool internalIsAtomicValue() const;
402
403 inline QXmlItem(const QPatternist::Item &i);
404
405 union
406 {
407 QPatternist::NodeIndexStorage m_node;
408
409 /* These two sits at the position of NodeIndexStorage::data.
410 * NodeIndexStorage::{additionalData,model} are free. */
411 const QPatternist::AtomicValue *m_atomicValue;
412 QXmlItemPrivate * m_ptr; /* Not currently used. */
413 };
414};
415
416inline bool qIsForwardIteratorEnd(const QXmlItem &item)
417{
418 return item.isNull();
419}
420
421Q_DECLARE_TYPEINFO(QXmlItem, Q_MOVABLE_TYPE);
422
423QT_END_NAMESPACE
424
425Q_DECLARE_METATYPE(QXmlItem) /* This macro must appear after QT_END_NAMESPACE. */
426
427QT_END_HEADER
428
429#endif
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