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22 ** GNU General Public License Usage
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEPROPERTYCACHE_P_H
43 #define QDECLARATIVEPROPERTYCACHE_P_H
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
56 #include <private/qdeclarativerefcount_p.h>
57 #include "qdeclarativecleanup_p.h"
58 #include "qdeclarativenotifier_p.h"
60 #include <private/qhashedstring_p.h>
61 #include <QtCore/qvarlengtharray.h>
62 #include <QtCore/qvector.h>
68 class QV8QObjectWrapper;
69 class QDeclarativeEngine;
70 class QDeclarativePropertyData;
71 class QDeclarativeAccessors;
72 class QDeclarativePropertyCacheMethodArguments;
74 // We have this somewhat awful split between RawData and Data so that RawData can be
75 // used in unions. In normal code, you should always use Data which initializes RawData
76 // to an invalid state on construction.
77 class QDeclarativePropertyRawData
82 ValueTypeFlagMask = 0x0000FFFF, // Flags in valueTypeFlags must fit in this mask
84 // Can apply to all properties, except IsFunction
85 IsConstant = 0x00000001, // Has CONST flag
86 IsWritable = 0x00000002, // Has WRITE function
87 IsResettable = 0x00000004, // Has RESET function
88 IsAlias = 0x00000008, // Is a QML alias to another property
89 IsFinal = 0x00000010, // Has FINAL flag
90 IsDirect = 0x00000020, // Exists on a C++ QMetaObject
91 HasAccessors = 0x00000040, // Has property accessors
93 // These are mutualy exclusive
94 IsFunction = 0x00000080, // Is an invokable
95 IsQObjectDerived = 0x00000100, // Property type is a QObject* derived type
96 IsEnumType = 0x00000200, // Property type is an enum
97 IsQList = 0x00000400, // Property type is a QML list
98 IsQmlBinding = 0x00000800, // Property type is a QDeclarativeBinding*
99 IsQJSValue = 0x00001000, // Property type is a QScriptValue
100 IsV8Handle = 0x00002000, // Property type is a QDeclarativeV8Handle
101 IsVMEProperty = 0x00004000, // Property type is a "var" property of VMEMO
102 IsValueTypeVirtual = 0x00008000, // Property is a value type "virtual" property
103 IsQVariant = 0x00010000, // Property is a QVariant
105 // Apply only to IsFunctions
106 IsVMEFunction = 0x00020000, // Function was added by QML
107 HasArguments = 0x00040000, // Function takes arguments
108 IsSignal = 0x00080000, // Function is a signal
109 IsVMESignal = 0x00100000, // Signal was added by QML
110 IsV8Function = 0x00200000, // Function takes QDeclarativeV8Function* args
111 IsSignalHandler = 0x00400000, // Function is a signal handler
112 IsOverload = 0x00800000, // Function is an overload of another function
114 // Internal QDeclarativePropertyCache flags
115 NotFullyResolved = 0x01000000 // True if the type data is to be lazily resolved
117 Q_DECLARE_FLAGS(Flags, Flag)
119 Flags getFlags() const { return Flag(flags); }
120 void setFlags(Flags f) { flags = f; }
122 bool isValid() const { return coreIndex != -1; }
124 bool isConstant() const { return flags & IsConstant; }
125 bool isWritable() const { return flags & IsWritable; }
126 bool isResettable() const { return flags & IsResettable; }
127 bool isAlias() const { return flags & IsAlias; }
128 bool isFinal() const { return flags & IsFinal; }
129 bool isDirect() const { return flags & IsDirect; }
130 bool hasAccessors() const { return flags & HasAccessors; }
131 bool isFunction() const { return flags & IsFunction; }
132 bool isQObject() const { return flags & IsQObjectDerived; }
133 bool isEnum() const { return flags & IsEnumType; }
134 bool isQList() const { return flags & IsQList; }
135 bool isQmlBinding() const { return flags & IsQmlBinding; }
136 bool isQJSValue() const { return flags & IsQJSValue; }
137 bool isV8Handle() const { return flags & IsV8Handle; }
138 bool isVMEProperty() const { return flags & IsVMEProperty; }
139 bool isValueTypeVirtual() const { return flags & IsValueTypeVirtual; }
140 bool isQVariant() const { return flags & IsQVariant; }
141 bool isVMEFunction() const { return flags & IsVMEFunction; }
142 bool hasArguments() const { return flags & HasArguments; }
143 bool isSignal() const { return flags & IsSignal; }
144 bool isVMESignal() const { return flags & IsVMESignal; }
145 bool isV8Function() const { return flags & IsV8Function; }
146 bool isSignalHandler() const { return flags & IsSignalHandler; }
147 bool isOverload() const { return flags & IsOverload; }
149 bool hasOverride() const { return !(flags & IsValueTypeVirtual) && overrideIndex >= 0; }
151 // Returns -1 if not a value type virtual property
152 inline int getValueTypeCoreIndex() const;
155 int propType; // When !NotFullyResolved
156 const char *propTypeName; // When NotFullyResolved
160 int notifyIndex; // When !IsFunction
161 void *arguments; // When IsFunction && HasArguments
164 struct { // When !IsValueTypeVirtual
165 uint overrideIndexIsProperty : 1;
166 signed int overrideIndex : 31;
168 struct { // When IsValueTypeVirtual
169 quint16 valueTypeFlags; // flags of the access property on the value type proxy object
170 quint8 valueTypePropType; // The QVariant::Type of access property on the value type
172 quint8 valueTypeCoreIndex; // The prop index of the access property on the value type
178 qint16 metaObjectOffset;
180 struct { // When HasAccessors
181 QDeclarativeAccessors *accessors;
182 intptr_t accessorData;
186 friend class QDeclarativePropertyData;
187 friend class QDeclarativePropertyCache;
190 Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyRawData::Flags);
192 class QDeclarativePropertyData : public QDeclarativePropertyRawData
195 inline QDeclarativePropertyData();
196 inline QDeclarativePropertyData(const QDeclarativePropertyRawData &);
198 inline bool operator==(const QDeclarativePropertyRawData &);
200 static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0);
201 void load(const QMetaProperty &, QDeclarativeEngine *engine = 0);
202 void load(const QMetaMethod &);
203 QString name(QObject *);
204 QString name(const QMetaObject *);
207 friend class QDeclarativePropertyCache;
208 void lazyLoad(const QMetaProperty &, QDeclarativeEngine *engine = 0);
209 void lazyLoad(const QMetaMethod &);
210 bool notFullyResolved() const { return flags & NotFullyResolved; }
213 class Q_DECLARATIVE_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup
216 QDeclarativePropertyCache(QDeclarativeEngine *);
217 QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *);
218 virtual ~QDeclarativePropertyCache();
220 void update(QDeclarativeEngine *, const QMetaObject *);
222 QDeclarativePropertyCache *copy();
224 QDeclarativePropertyCache *copyAndAppend(QDeclarativeEngine *, const QMetaObject *,
225 QDeclarativePropertyData::Flag propertyFlags = QDeclarativePropertyData::NoFlags,
226 QDeclarativePropertyData::Flag methodFlags = QDeclarativePropertyData::NoFlags,
227 QDeclarativePropertyData::Flag signalFlags = QDeclarativePropertyData::NoFlags);
228 QDeclarativePropertyCache *copyAndAppend(QDeclarativeEngine *, const QMetaObject *, int revision,
229 QDeclarativePropertyData::Flag propertyFlags = QDeclarativePropertyData::NoFlags,
230 QDeclarativePropertyData::Flag methodFlags = QDeclarativePropertyData::NoFlags,
231 QDeclarativePropertyData::Flag signalFlags = QDeclarativePropertyData::NoFlags);
233 void append(QDeclarativeEngine *, const QMetaObject *,
234 QDeclarativePropertyData::Flag propertyFlags = QDeclarativePropertyData::NoFlags,
235 QDeclarativePropertyData::Flag methodFlags = QDeclarativePropertyData::NoFlags,
236 QDeclarativePropertyData::Flag signalFlags = QDeclarativePropertyData::NoFlags);
237 void append(QDeclarativeEngine *, const QMetaObject *, int revision,
238 QDeclarativePropertyData::Flag propertyFlags = QDeclarativePropertyData::NoFlags,
239 QDeclarativePropertyData::Flag methodFlags = QDeclarativePropertyData::NoFlags,
240 QDeclarativePropertyData::Flag signalFlags = QDeclarativePropertyData::NoFlags);
242 inline QDeclarativePropertyData *property(const QHashedV8String &) const;
243 QDeclarativePropertyData *property(const QHashedStringRef &) const;
244 QDeclarativePropertyData *property(const QHashedCStringRef &) const;
245 QDeclarativePropertyData *property(const QString &) const;
246 QDeclarativePropertyData *property(int) const;
247 QDeclarativePropertyData *method(int) const;
248 QStringList propertyNames() const;
250 inline QDeclarativePropertyData *overrideData(QDeclarativePropertyData *) const;
251 inline bool isAllowedInRevision(QDeclarativePropertyData *) const;
253 inline QDeclarativeEngine *qmlEngine() const;
254 static QDeclarativePropertyData *property(QDeclarativeEngine *, QObject *, const QString &,
255 QDeclarativePropertyData &);
256 static QDeclarativePropertyData *property(QDeclarativeEngine *, QObject *, const QHashedV8String &,
257 QDeclarativePropertyData &);
258 static int *methodParameterTypes(QObject *, int index, QVarLengthArray<int, 9> &dummy,
259 QByteArray *unknownTypeError);
261 static bool isDynamicMetaObject(const QMetaObject *);
263 virtual void destroy();
264 virtual void clear();
267 friend class QDeclarativeEnginePrivate;
268 friend class QV8QObjectWrapper;
270 inline QDeclarativePropertyCache *copy(int reserve);
272 // Implemented in v8/qv8qobjectwrapper.cpp
273 v8::Local<v8::Object> newQObject(QObject *, QV8Engine *);
275 typedef QVector<QDeclarativePropertyData> IndexCache;
276 typedef QStringHash<QDeclarativePropertyData *> StringCache;
277 typedef QVector<int> AllowedRevisionCache;
279 void resolve(QDeclarativePropertyData *) const;
280 void updateRecur(QDeclarativeEngine *, const QMetaObject *);
282 QDeclarativeEngine *engine;
284 QDeclarativePropertyCache *parent;
285 int propertyIndexCacheStart;
286 int methodIndexCacheStart;
287 int signalHanderIndexCacheStart;
289 IndexCache propertyIndexCache;
290 IndexCache methodIndexCache;
291 IndexCache signalHandlerIndexCache;
292 StringCache stringCache;
293 AllowedRevisionCache allowedRevisionCache;
294 v8::Persistent<v8::Function> constructor;
296 const QMetaObject *metaObject;
297 QDeclarativePropertyCacheMethodArguments *argumentsCache;
300 QDeclarativePropertyData::QDeclarativePropertyData()
305 overrideIndexIsProperty = false;
308 metaObjectOffset = -1;
314 QDeclarativePropertyData::QDeclarativePropertyData(const QDeclarativePropertyRawData &d)
316 *(static_cast<QDeclarativePropertyRawData *>(this)) = d;
319 bool QDeclarativePropertyData::operator==(const QDeclarativePropertyRawData &other)
321 return flags == other.flags &&
322 propType == other.propType &&
323 coreIndex == other.coreIndex &&
324 notifyIndex == other.notifyIndex &&
325 revision == other.revision &&
326 (!isValueTypeVirtual() ||
327 (valueTypeCoreIndex == other.valueTypeCoreIndex &&
328 valueTypePropType == other.valueTypePropType));
331 int QDeclarativePropertyRawData::getValueTypeCoreIndex() const
333 return isValueTypeVirtual()?valueTypeCoreIndex:-1;
336 QDeclarativePropertyData *
337 QDeclarativePropertyCache::overrideData(QDeclarativePropertyData *data) const
339 if (!data->hasOverride())
342 if (data->overrideIndexIsProperty)
343 return property(data->overrideIndex);
345 return method(data->overrideIndex);
348 bool QDeclarativePropertyCache::isAllowedInRevision(QDeclarativePropertyData *data) const
350 return (data->metaObjectOffset == -1 && data->revision == 0) ||
351 (allowedRevisionCache[data->metaObjectOffset] >= data->revision);
354 QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const
359 QDeclarativePropertyData *QDeclarativePropertyCache::property(const QHashedV8String &str) const
361 QDeclarativePropertyData **rv = stringCache.value(str);
362 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
368 #endif // QDECLARATIVEPROPERTYCACHE_P_H