1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVEPROPERTYCACHE_P_H
#define QDECLARATIVEPROPERTYCACHE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qdeclarativerefcount_p.h>
#include "qdeclarativecleanup_p.h"
#include "qdeclarativenotifier_p.h"
#include <private/qhashedstring_p.h>
#include <QtCore/qvector.h>
QT_BEGIN_NAMESPACE
class QDeclarativeEngine;
class QMetaProperty;
class QV8Engine;
class QV8QObjectWrapper;
class Q_DECLARATIVE_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup
{
public:
QDeclarativePropertyCache(QDeclarativeEngine *);
QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *);
virtual ~QDeclarativePropertyCache();
// We have this somewhat aweful split between RawData and Data so that RawData can be
// used in unions. In normal code, you should always use Data which initializes RawData
// to an invalid state on construction.
struct Data;
struct RawData {
enum Flag {
NoFlags = 0x00000000,
ValueTypeFlagMask = 0x0000FFFF, // Flags in valueTypeFlags must fit in this mask
// Can apply to all properties, except IsFunction
IsConstant = 0x00000001, // Has CONST flag
IsWritable = 0x00000002, // Has WRITE function
IsResettable = 0x00000004, // Has RESET function
IsAlias = 0x00000008, // Is a QML alias to another property
IsFinal = 0x00000010, // Has FINAL flag
IsDirect = 0x00000020, // Exists on a C++ QMetaObject
// These are mutualy exclusive
IsFunction = 0x00000040, // Is an invokable
IsQObjectDerived = 0x00000080, // Property type is a QObject* derived type
IsEnumType = 0x00000100, // Property type is an enum
IsQList = 0x00000200, // Property type is a QML list
IsQmlBinding = 0x00000400, // Property type is a QDeclarativeBinding*
IsQJSValue = 0x00000800, // Property type is a QScriptValue
IsV8Handle = 0x00001000, // Property type is a QDeclarativeV8Handle
IsVMEProperty = 0x00002000, // Property type is a "var" property of VMEMO
IsValueTypeVirtual = 0x00004000, // Property is a value type "virtual" property
// Apply only to IsFunctions
IsVMEFunction = 0x00008000, // Function was added by QML
HasArguments = 0x00010000, // Function takes arguments
IsSignal = 0x00020000, // Function is a signal
IsVMESignal = 0x00040000, // Signal was added by QML
IsV8Function = 0x00080000, // Function takes QDeclarativeV8Function* args
IsSignalHandler = 0x00100000, // Function is a signal handler
// Internal QDeclarativePropertyCache flags
NotFullyResolved = 0x00200000 // True if the type data is to be lazily resolved
};
Q_DECLARE_FLAGS(Flags, Flag)
Flags getFlags() const { return Flag(flags); }
void setFlags(Flags f) { flags = f; }
bool isValid() const { return coreIndex != -1; }
bool isConstant() const { return flags & IsConstant; }
bool isWritable() const { return flags & IsWritable; }
bool isResettable() const { return flags & IsResettable; }
bool isAlias() const { return flags & IsAlias; }
bool isFinal() const { return flags & IsFinal; }
bool isDirect() const { return flags & IsDirect; }
bool isFunction() const { return flags & IsFunction; }
bool isQObject() const { return flags & IsQObjectDerived; }
bool isEnum() const { return flags & IsEnumType; }
bool isQList() const { return flags & IsQList; }
bool isQmlBinding() const { return flags & IsQmlBinding; }
bool isQJSValue() const { return flags & IsQJSValue; }
bool isV8Handle() const { return flags & IsV8Handle; }
bool isVMEProperty() const { return flags & IsVMEProperty; }
bool isValueTypeVirtual() const { return flags & IsValueTypeVirtual; }
bool isVMEFunction() const { return flags & IsVMEFunction; }
bool hasArguments() const { return flags & HasArguments; }
bool isSignal() const { return flags & IsSignal; }
bool isVMESignal() const { return flags & IsVMESignal; }
bool isV8Function() const { return flags & IsV8Function; }
bool isSignalHandler() const { return flags & IsSignalHandler; }
union {
int propType; // When !NotFullyResolved
const char *propTypeName; // When NotFullyResolved
};
int coreIndex;
union {
int notifyIndex; // When !IsFunction
int relatedIndex; // When IsFunction
};
union {
struct { // When !IsValueTypeVirtual
uint overrideIndexIsProperty : 1;
signed int overrideIndex : 31;
};
struct { // When IsValueTypeVirtual
quint16 valueTypeFlags; // flags of the access property on the value type proxy object
quint8 valueTypePropType; // The QVariant::Type of access property on the value type
// proxy object
quint8 valueTypeCoreIndex; // The prop index of the access property on the value type
//proxy object
};
};
int revision;
int metaObjectOffset;
private:
friend struct Data;
friend class QDeclarativePropertyCache;
quint32 flags;
};
struct Data : public RawData {
inline Data();
inline Data(const RawData &);
inline bool operator==(const RawData &);
static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0);
void load(const QMetaProperty &, QDeclarativeEngine *engine = 0);
void load(const QMetaMethod &);
QString name(QObject *);
QString name(const QMetaObject *);
// Returns -1 if not a value type virtual property
inline int getValueTypeCoreIndex() const;
private:
friend class QDeclarativePropertyCache;
void lazyLoad(const QMetaProperty &, QDeclarativeEngine *engine = 0);
void lazyLoad(const QMetaMethod &);
bool notFullyResolved() const { return flags & NotFullyResolved; }
};
void update(QDeclarativeEngine *, const QMetaObject *);
QDeclarativePropertyCache *copy(int reserve = 0);
void append(QDeclarativeEngine *, const QMetaObject *, Data::Flag propertyFlags = Data::NoFlags,
Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
void append(QDeclarativeEngine *, const QMetaObject *, int revision, Data::Flag propertyFlags = Data::NoFlags,
Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
static Data create(const QMetaObject *, const QString &);
inline Data *property(const QHashedV8String &) const;
Data *property(const QHashedStringRef &) const;
Data *property(const QHashedCStringRef &) const;
Data *property(const QString &) const;
Data *property(int) const;
Data *method(int) const;
QStringList propertyNames() const;
inline Data *overrideData(Data *) const;
inline bool isAllowedInRevision(Data *) const;
inline QDeclarativeEngine *qmlEngine() const;
static Data *property(QDeclarativeEngine *, QObject *, const QString &, Data &);
static Data *property(QDeclarativeEngine *, QObject *, const QHashedV8String &, Data &);
static bool isDynamicMetaObject(const QMetaObject *);
protected:
virtual void destroy();
virtual void clear();
private:
friend class QDeclarativeEnginePrivate;
friend class QV8QObjectWrapper;
// Implemented in v8/qv8qobjectwrapper.cpp
v8::Local<v8::Object> newQObject(QObject *, QV8Engine *);
typedef QVector<Data> IndexCache;
typedef QStringHash<Data *> StringCache;
typedef QVector<int> AllowedRevisionCache;
void resolve(Data *) const;
void updateRecur(QDeclarativeEngine *, const QMetaObject *);
QDeclarativeEngine *engine;
QDeclarativePropertyCache *parent;
int propertyIndexCacheStart;
int methodIndexCacheStart;
IndexCache propertyIndexCache;
IndexCache methodIndexCache;
IndexCache signalHandlerIndexCache;
StringCache stringCache;
AllowedRevisionCache allowedRevisionCache;
v8::Persistent<v8::Function> constructor;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyCache::Data::Flags);
QDeclarativePropertyCache::Data::Data()
{
propType = 0;
coreIndex = -1;
notifyIndex = -1;
overrideIndexIsProperty = false;
overrideIndex = -1;
revision = 0;
metaObjectOffset = -1;
flags = 0;
}
QDeclarativePropertyCache::Data::Data(const QDeclarativePropertyCache::RawData &d)
{
*(static_cast<RawData *>(this)) = d;
}
bool QDeclarativePropertyCache::Data::operator==(const QDeclarativePropertyCache::RawData &other)
{
return flags == other.flags &&
propType == other.propType &&
coreIndex == other.coreIndex &&
notifyIndex == other.notifyIndex &&
revision == other.revision &&
(!isValueTypeVirtual() ||
(valueTypeCoreIndex == other.valueTypeCoreIndex &&
valueTypePropType == other.valueTypePropType));
}
int QDeclarativePropertyCache::Data::getValueTypeCoreIndex() const
{
return isValueTypeVirtual()?valueTypeCoreIndex:-1;
}
QDeclarativePropertyCache::Data *
QDeclarativePropertyCache::overrideData(Data *data) const
{
if (data->overrideIndex < 0)
return 0;
if (data->overrideIndexIsProperty)
return property(data->overrideIndex);
else
return method(data->overrideIndex);
}
bool QDeclarativePropertyCache::isAllowedInRevision(Data *data) const
{
return (data->metaObjectOffset == -1 && data->revision == 0) ||
(allowedRevisionCache[data->metaObjectOffset] >= data->revision);
}
QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const
{
return engine;
}
QDeclarativePropertyCache::Data *QDeclarativePropertyCache::property(const QHashedV8String &str) const
{
QDeclarativePropertyCache::Data **rv = stringCache.value(str);
if (rv && (*rv)->notFullyResolved()) resolve(*rv);
return rv?*rv:0;
}
QT_END_NAMESPACE
#endif // QDECLARATIVEPROPERTYCACHE_P_H
|