source: trunk/src/xmlpatterns/api/qabstractxmlnodemodel.h@ 256

Last change on this file since 256 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 14.3 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** 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 are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
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
48QT_BEGIN_HEADER
49QT_BEGIN_NAMESPACE
50
51QT_MODULE(XmlPatterns)
52
53/* This file contains the classes QXmlNodeModelIndex, QAbstractXmlNodeModel,
54 * QXmlItem and QPatternist::NodeIndexStorage. */
55
56class QAbstractXmlNodeModel;
57class QAbstractXmlNodeModelPrivate;
58class QAbstractXmlReceiver;
59class QUrl;
60class QXmlName;
61class QXmlNodeModelIndex;
62template<typename T> class QAbstractXmlForwardIterator;
63template<typename T> class QVector;
64
65/* The members in the namespace QPatternist are internal, not part of the public API, and
66 * unsupported. Using them leads to undefined behavior. */
67namespace QPatternist
68{
69 class DynamicContext;
70 class Item;
71 class ItemType;
72 template<typename TResult, typename TSource, typename TMapper, typename Context> class ItemMappingIterator;
73 template<typename TResult, typename TSource, typename TMapper> class SequenceMappingIterator;
74 typedef QExplicitlySharedDataPointer<ItemType> ItemTypePtr;
75 typedef QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<Item> > ItemIteratorPtr;
76 typedef QVector<QXmlName> QXmlNameVector;
77
78 class NodeIndexStorage
79 {
80 public:
81 typedef qint64 Data;
82
83 /*!
84 \note Changing merely the order of these two members, ptr and data,
85 is a binary incompatible change on Mac Power PC.
86 */
87 union
88 {
89 void *ptr; // Do not use ptr directy, use pointer() instead.
90 Data data;
91 };
92 void *pointer() const
93 {
94 /* Constructing to qptrdiff means we avoid the warning "cast to pointer
95 * from integer of different size."
96 */
97 return (void *)qptrdiff(data);
98 }
99
100 Data additionalData;
101 const QAbstractXmlNodeModel *model;
102
103 /* Implementation is in qabstractxmlnodemodel.cpp. */
104 inline bool operator!=(const NodeIndexStorage &other) const;
105 };
106}
107
108class Q_XMLPATTERNS_EXPORT QXmlNodeModelIndex
109{
110 enum Constants
111 {
112 ForwardAxis = 8192,
113 ReverseAxis = 16384
114 };
115
116public:
117 inline QXmlNodeModelIndex()
118 {
119 reset();
120 }
121
122 inline QXmlNodeModelIndex(const QXmlNodeModelIndex &other) : m_storage(other.m_storage)
123 {
124 }
125
126 bool operator==(const QXmlNodeModelIndex &other) const;
127 bool operator!=(const QXmlNodeModelIndex &other) const;
128
129 typedef QAbstractXmlForwardIterator<QXmlNodeModelIndex> Iterator;
130 typedef QList<QXmlNodeModelIndex> List;
131
132 enum NodeKind
133 {
134 Attribute = 1,
135 Comment = 2,
136 Document = 4,
137 Element = 8,
138 Namespace = 16,
139 ProcessingInstruction = 32,
140 Text = 64
141 };
142
143 enum DocumentOrder
144 {
145 Precedes = -1,
146 Is = 0,
147 Follows = 1
148 };
149
150 enum Axis
151 {
152 AxisChild = 1 | ForwardAxis,
153 AxisDescendant = 2 | ForwardAxis,
154 AxisAttribute = 4 | ForwardAxis,
155 AxisSelf = 8 | ForwardAxis,
156 AxisDescendantOrSelf = 16 | ForwardAxis,
157 AxisFollowingSibling = 32 | ForwardAxis,
158 AxisNamespace = 64 | ForwardAxis,
159 AxisFollowing = 128 | ReverseAxis,
160 AxisParent = 256 | ReverseAxis,
161 AxisAncestor = 512 | ReverseAxis,
162 AxisPrecedingSibling = 1024 | ReverseAxis,
163 AxisPreceding = 2048 | ReverseAxis,
164 AxisAncestorOrSelf = 4096 | ReverseAxis,
165 /* Note that we cannot clash with the values of ForwardAxis and
166 * ReverseAxis. */
167 AxisChildOrTop = 32768 | ForwardAxis,
168 AxisAttributeOrTop = 65536 | ForwardAxis
169 };
170
171 inline qint64 data() const
172 {
173 return m_storage.data;
174 }
175
176 inline void *internalPointer() const
177 {
178 return m_storage.pointer();
179 }
180
181 inline const QAbstractXmlNodeModel *model() const
182 {
183 return m_storage.model;
184 }
185
186 inline qint64 additionalData() const
187 {
188 return m_storage.additionalData;
189 }
190
191 inline bool isNull() const
192 {
193 return !m_storage.model;
194 }
195
196 /* The members below are internal, not part of the public API, and
197 * unsupported. Using them leads to undefined behavior. */
198
199 inline QXmlName name() const;
200 inline QXmlNodeModelIndex root() const;
201 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const Axis axis) const;
202 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QPatternist::Item> > sequencedTypedValue() const;
203 inline QUrl documentUri() const;
204 inline QUrl baseUri() const;
205 inline NodeKind kind() const;
206 inline bool isDeepEqual(const QXmlNodeModelIndex &other) const;
207 inline DocumentOrder compareOrder(const QXmlNodeModelIndex &other) const;
208 inline void sendNamespaces(QAbstractXmlReceiver *const receiver) const;
209 inline QVector<QXmlName> namespaceBindings() const;
210 inline QXmlName::NamespaceCode namespaceForPrefix(const QXmlName::PrefixCode prefix) const;
211 inline QString stringValue() const;
212 inline QPatternist::ItemTypePtr type() const;
213 inline bool is(const QXmlNodeModelIndex &other) const;
214
215 inline void reset()
216 {
217 m_storage.data = 0;
218 m_storage.additionalData = 0;
219 m_storage.model = 0;
220 }
221
222private:
223 static inline QXmlNodeModelIndex create(const qint64 d,
224 const QAbstractXmlNodeModel *const nm)
225 {
226 QXmlNodeModelIndex n;
227 n.m_storage.data = d;
228 n.m_storage.model = nm;
229 n.m_storage.additionalData = 0;
230 return n;
231 }
232
233 static inline QXmlNodeModelIndex create(const qint64 data,
234 const QAbstractXmlNodeModel *const nm,
235 const qint64 addData)
236 {
237 QXmlNodeModelIndex n;
238 n.m_storage.data = data;
239 n.m_storage.model = nm;
240 n.m_storage.additionalData = addData;
241 return n;
242 }
243
244 inline QXmlNodeModelIndex(const QPatternist::NodeIndexStorage &storage) : m_storage(storage)
245 {
246 }
247
248 friend class QAbstractXmlNodeModel;
249 friend class QPatternist::Item;
250 friend class QXmlItem;
251 inline operator int() const; // Disable
252
253 QPatternist::NodeIndexStorage m_storage;
254};
255
256Q_XMLPATTERNS_EXPORT uint qHash(const QXmlNodeModelIndex &index);
257
258inline bool qIsForwardIteratorEnd(const QXmlNodeModelIndex &item)
259{
260 return item.isNull();
261}
262
263class Q_XMLPATTERNS_EXPORT QAbstractXmlNodeModel : public QSharedData
264{
265public:
266 enum SimpleAxis
267 {
268 Parent,
269 FirstChild,
270 PreviousSibling,
271 NextSibling
272 };
273
274 typedef QExplicitlySharedDataPointer<QAbstractXmlNodeModel> Ptr;
275 typedef QList<Ptr> List;
276
277 QAbstractXmlNodeModel();
278 virtual ~QAbstractXmlNodeModel();
279
280 virtual QUrl baseUri(const QXmlNodeModelIndex &ni) const = 0;
281 virtual QUrl documentUri(const QXmlNodeModelIndex &ni) const = 0;
282 virtual QXmlNodeModelIndex::NodeKind kind(const QXmlNodeModelIndex &ni) const = 0;
283 virtual QXmlNodeModelIndex::DocumentOrder compareOrder(const QXmlNodeModelIndex &ni1,
284 const QXmlNodeModelIndex &ni2) const = 0;
285 virtual QXmlNodeModelIndex root(const QXmlNodeModelIndex &n) const = 0;
286 virtual QXmlName name(const QXmlNodeModelIndex &ni) const = 0;
287 virtual QString stringValue(const QXmlNodeModelIndex &n) const = 0;
288 virtual QVariant typedValue(const QXmlNodeModelIndex &n) const = 0;
289
290 /* The members below are internal, not part of the public API, and
291 * unsupported. Using them leads to undefined behavior. */
292 virtual QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > iterate(const QXmlNodeModelIndex &ni, QXmlNodeModelIndex::Axis axis) const;
293 virtual QPatternist::ItemIteratorPtr sequencedTypedValue(const QXmlNodeModelIndex &ni) const;
294 virtual QPatternist::ItemTypePtr type(const QXmlNodeModelIndex &ni) const;
295 virtual QXmlName::NamespaceCode namespaceForPrefix(const QXmlNodeModelIndex &ni,
296 const QXmlName::PrefixCode prefix) const;
297 virtual bool isDeepEqual(const QXmlNodeModelIndex &ni1,
298 const QXmlNodeModelIndex &ni2) const;
299 virtual void sendNamespaces(const QXmlNodeModelIndex &n,
300 QAbstractXmlReceiver *const receiver) const;
301 virtual QVector<QXmlName> namespaceBindings(const QXmlNodeModelIndex &n) const = 0;
302
303
304 virtual QXmlNodeModelIndex elementById(const QXmlName &NCName) const = 0;
305 virtual QVector<QXmlNodeModelIndex> nodesByIdref(const QXmlName &NCName) const = 0;
306
307 enum NodeCopySetting
308 {
309 InheritNamespaces = 0x1,
310 PreserveNamespaces = 0x2
311 };
312
313 typedef QFlags<NodeCopySetting> NodeCopySettings;
314 virtual void copyNodeTo(const QXmlNodeModelIndex &node,
315 QAbstractXmlReceiver *const receiver,
316 const NodeCopySettings &) const;
317
318protected:
319
320 virtual QXmlNodeModelIndex nextFromSimpleAxis(SimpleAxis axis, const QXmlNodeModelIndex &origin) const = 0;
321 virtual QVector<QXmlNodeModelIndex> attributes(const QXmlNodeModelIndex &element) const = 0;
322
323 QAbstractXmlNodeModel(QAbstractXmlNodeModelPrivate *d);
324
325 inline QXmlNodeModelIndex createIndex(qint64 data) const
326 {
327 return QXmlNodeModelIndex::create(data, this);
328 }
329
330 inline QXmlNodeModelIndex createIndex(void * pointer,
331 qint64 additionalData = 0) const
332 {
333 return QXmlNodeModelIndex::create(qptrdiff(pointer), this, additionalData);
334 }
335
336 inline QXmlNodeModelIndex createIndex(qint64 data,
337 qint64 additionalData) const
338 {
339 return QXmlNodeModelIndex::create(data, this, additionalData);
340 }
341
342 QAbstractXmlNodeModelPrivate *d_ptr;
343private:
344 friend class QPatternist::ItemMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *, QExplicitlySharedDataPointer<QPatternist::DynamicContext> >;
345 friend class QPatternist::SequenceMappingIterator<QXmlNodeModelIndex, QXmlNodeModelIndex, const QAbstractXmlNodeModel *>;
346
347 inline QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<QXmlNodeModelIndex> > mapToSequence(const QXmlNodeModelIndex &ni,
348 const QExplicitlySharedDataPointer<QPatternist::DynamicContext> &) const;
349
350 static inline bool isIgnorableInDeepEqual(const QXmlNodeModelIndex &n);
351 Q_DISABLE_COPY(QAbstractXmlNodeModel)
352};
353
354Q_DECLARE_TYPEINFO(QXmlNodeModelIndex, Q_MOVABLE_TYPE);
355
356template<typename T> class QAbstractXmlForwardIterator;
357class QVariant;
358class QXmlItemPrivate;
359
360namespace QPatternist
361{
362 class AtomicValue;
363 class VariableLoader;
364 class IteratorBridge;
365 class ToQXmlItemMapper;
366 class ToItemMapper;
367}
368
369class Q_XMLPATTERNS_EXPORT QXmlItem
370{
371public:
372 typedef QAbstractXmlForwardIterator<QXmlItem> Iterator;
373
374 QXmlItem();
375 QXmlItem(const QXmlItem &other);
376 QXmlItem(const QXmlNodeModelIndex &node);
377 QXmlItem(const QVariant &atomicValue);
378 ~QXmlItem();
379 QXmlItem &operator=(const QXmlItem &other);
380
381 bool isNull() const;
382 bool isNode() const;
383 bool isAtomicValue() const;
384
385 QVariant toAtomicValue() const;
386 QXmlNodeModelIndex toNodeModelIndex() const;
387
388private:
389 friend class QPatternist::IteratorBridge;
390 friend class QPatternist::VariableLoader;
391 friend class QPatternist::ToQXmlItemMapper;
392 friend class QPatternist::ToItemMapper;
393 friend class QPatternist::Item;
394
395 inline bool internalIsAtomicValue() const;
396
397 inline QXmlItem(const QPatternist::Item &i);
398
399 union
400 {
401 QPatternist::NodeIndexStorage m_node;
402
403 /* These two sits at the position of NodeIndexStorage::data.
404 * NodeIndexStorage::{additionalData,model} are free. */
405 const QPatternist::AtomicValue *m_atomicValue;
406 QXmlItemPrivate * m_ptr; /* Not currently used. */
407 };
408};
409
410inline bool qIsForwardIteratorEnd(const QXmlItem &item)
411{
412 return item.isNull();
413}
414
415Q_DECLARE_TYPEINFO(QXmlItem, Q_MOVABLE_TYPE);
416
417QT_END_NAMESPACE
418
419Q_DECLARE_METATYPE(QXmlItem) /* This macro must appear after QT_END_NAMESPACE. */
420
421QT_END_HEADER
422
423#endif
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