1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtQml module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
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17 ** In addition, as a special exception, Nokia gives you certain additional
18 ** rights. These rights are described in the Nokia Qt LGPL Exception
19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
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25 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #include "qqmlpropertycache_p.h"
44 #include "qqmlengine_p.h"
45 #include "qqmlbinding_p.h"
46 #include <private/qv8engine_p.h>
48 #include <private/qmetaobject_p.h>
49 #include <private/qqmlaccessors_p.h>
50 #include <private/qmetaobjectbuilder_p.h>
52 #include <QtCore/qdebug.h>
54 #include <ctype.h> // for toupper
57 // nonstandard extension used : zero-sized array in struct/union.
58 # pragma warning( disable : 4200 )
61 Q_DECLARE_METATYPE(QJSValue)
62 Q_DECLARE_METATYPE(QQmlV8Handle);
66 #define Q_INT16_MAX 32767
68 class QQmlPropertyCacheMethodArguments
71 QQmlPropertyCacheMethodArguments *next;
73 QList<QByteArray> *names;
77 // Flags that do *NOT* depend on the property's QMetaProperty::userType() and thus are quick
79 static QQmlPropertyData::Flags fastFlagsForProperty(const QMetaProperty &p)
81 QQmlPropertyData::Flags flags;
84 flags |= QQmlPropertyData::IsConstant;
86 flags |= QQmlPropertyData::IsWritable;
88 flags |= QQmlPropertyData::IsResettable;
90 flags |= QQmlPropertyData::IsFinal;
92 flags |= QQmlPropertyData::IsEnumType;
97 // Flags that do depend on the property's QMetaProperty::userType() and thus are slow to
99 static QQmlPropertyData::Flags flagsForPropertyType(int propType, QQmlEngine *engine)
101 Q_ASSERT(propType != -1);
103 QQmlPropertyData::Flags flags;
105 if (propType == QMetaType::QObjectStar || propType == QMetaType::QWidgetStar) {
106 flags |= QQmlPropertyData::IsQObjectDerived;
107 } else if (propType == QMetaType::QVariant) {
108 flags |= QQmlPropertyData::IsQVariant;
109 } else if (propType < (int)QVariant::UserType) {
110 } else if (propType == qMetaTypeId<QQmlBinding *>()) {
111 flags |= QQmlPropertyData::IsQmlBinding;
112 } else if (propType == qMetaTypeId<QJSValue>()) {
113 flags |= QQmlPropertyData::IsQJSValue;
114 } else if (propType == qMetaTypeId<QQmlV8Handle>()) {
115 flags |= QQmlPropertyData::IsV8Handle;
117 QQmlMetaType::TypeCategory cat =
118 engine ? QQmlEnginePrivate::get(engine)->typeCategory(propType)
119 : QQmlMetaType::typeCategory(propType);
121 if (cat == QQmlMetaType::Object)
122 flags |= QQmlPropertyData::IsQObjectDerived;
123 else if (cat == QQmlMetaType::List)
124 flags |= QQmlPropertyData::IsQList;
130 static int metaObjectSignalCount(const QMetaObject *metaObject)
133 for (const QMetaObject *obj = metaObject; obj; obj = obj->superClass())
134 signalCount += QMetaObjectPrivate::get(obj)->signalCount;
138 QQmlPropertyData::Flags
139 QQmlPropertyData::flagsForProperty(const QMetaProperty &p, QQmlEngine *engine)
141 return fastFlagsForProperty(p) | flagsForPropertyType(p.userType(), engine);
144 void QQmlPropertyData::lazyLoad(const QMetaProperty &p, QQmlEngine *engine)
148 coreIndex = p.propertyIndex();
149 notifyIndex = QMetaObjectPrivate::signalIndex(p.notifySignal());
150 Q_ASSERT(p.revision() <= Q_INT16_MAX);
151 revision = p.revision();
153 flags = fastFlagsForProperty(p);
156 if (type == QMetaType::QObjectStar || type == QMetaType::QWidgetStar) {
158 flags |= QQmlPropertyData::IsQObjectDerived;
159 } else if (type == QMetaType::QVariant) {
161 flags |= QQmlPropertyData::IsQVariant;
162 } else if (type == QVariant::UserType || type == -1) {
163 propTypeName = p.typeName();
164 flags |= QQmlPropertyData::NotFullyResolved;
170 void QQmlPropertyData::load(const QMetaProperty &p, QQmlEngine *engine)
172 propType = p.userType();
173 coreIndex = p.propertyIndex();
174 notifyIndex = QMetaObjectPrivate::signalIndex(p.notifySignal());
175 flags = fastFlagsForProperty(p) | flagsForPropertyType(propType, engine);
176 Q_ASSERT(p.revision() <= Q_INT16_MAX);
177 revision = p.revision();
180 void QQmlPropertyData::load(const QMetaMethod &m)
182 coreIndex = m.methodIndex();
185 if (m.methodType() == QMetaMethod::Signal)
187 propType = m.returnType();
189 if (m.parameterCount()) {
190 flags |= HasArguments;
191 if ((m.parameterCount() == 1) && (m.parameterTypes().first() == "QQmlV8Function*")) {
192 flags |= IsV8Function;
196 if (m.attributes() & QMetaMethod::Cloned)
199 Q_ASSERT(m.revision() <= Q_INT16_MAX);
200 revision = m.revision();
203 void QQmlPropertyData::lazyLoad(const QMetaMethod &m)
205 coreIndex = m.methodIndex();
208 if (m.methodType() == QMetaMethod::Signal)
210 propType = QMetaType::Void;
212 const char *returnType = m.typeName();
213 Q_ASSERT(returnType != 0);
214 if ((*returnType != 'v') || (qstrcmp(returnType+1, "oid") != 0)) {
215 propTypeName = returnType;
216 flags |= NotFullyResolved;
219 if (m.parameterCount()) {
220 flags |= HasArguments;
221 if ((m.parameterCount() == 1) && (m.parameterTypes().first() == "QQmlV8Function*")) {
222 flags |= IsV8Function;
226 if (m.attributes() & QMetaMethod::Cloned)
229 Q_ASSERT(m.revision() <= Q_INT16_MAX);
230 revision = m.revision();
234 Creates a new empty QQmlPropertyCache.
236 QQmlPropertyCache::QQmlPropertyCache(QQmlEngine *e)
237 : engine(e), _parent(0), propertyIndexCacheStart(0), methodIndexCacheStart(0),
238 signalHandlerIndexCacheStart(0), _ownMetaObject(false), _metaObject(0), argumentsCache(0)
244 Creates a new QQmlPropertyCache of \a metaObject.
246 QQmlPropertyCache::QQmlPropertyCache(QQmlEngine *e, const QMetaObject *metaObject)
247 : engine(e), _parent(0), propertyIndexCacheStart(0), methodIndexCacheStart(0),
248 signalHandlerIndexCacheStart(0), _ownMetaObject(false), _metaObject(0), argumentsCache(0)
251 Q_ASSERT(metaObject);
253 update(engine, metaObject);
256 QQmlPropertyCache::~QQmlPropertyCache()
260 QQmlPropertyCacheMethodArguments *args = argumentsCache;
262 QQmlPropertyCacheMethodArguments *next = args->next;
263 if (args->names) delete args->names;
268 // We must clear this prior to releasing the parent incase it is a
271 if (_parent) _parent->release();
273 if (_ownMetaObject) free((void *)_metaObject);
279 void QQmlPropertyCache::destroy()
281 Q_ASSERT(engine || constructor.IsEmpty());
282 if (constructor.IsEmpty())
285 QQmlEnginePrivate::deleteInEngineThread(engine, this);
288 // This is inherited from QQmlCleanup, so it should only clear the things
289 // that are tied to the specific QQmlEngine.
290 void QQmlPropertyCache::clear()
292 qPersistentDispose(constructor);
296 QQmlPropertyCache *QQmlPropertyCache::copy(int reserve)
298 QQmlPropertyCache *cache = new QQmlPropertyCache(engine);
299 cache->_parent = this;
300 cache->_parent->addref();
301 cache->propertyIndexCacheStart = propertyIndexCache.count() + propertyIndexCacheStart;
302 cache->methodIndexCacheStart = methodIndexCache.count() + methodIndexCacheStart;
303 cache->signalHandlerIndexCacheStart = signalHandlerIndexCache.count() + signalHandlerIndexCacheStart;
304 cache->stringCache.linkAndReserve(stringCache, reserve);
305 cache->allowedRevisionCache = allowedRevisionCache;
306 cache->_metaObject = _metaObject;
307 cache->_defaultPropertyName = _defaultPropertyName;
309 // We specifically do *NOT* copy the constructor
314 QQmlPropertyCache *QQmlPropertyCache::copy()
319 QQmlPropertyCache *QQmlPropertyCache::copyAndReserve(QQmlEngine *, int propertyCount, int methodCount,
322 QQmlPropertyCache *rv = copy(propertyCount + methodCount + signalCount);
323 rv->propertyIndexCache.reserve(propertyCount);
324 rv->methodIndexCache.reserve(methodCount);
325 rv->signalHandlerIndexCache.reserve(signalCount);
333 \a notifyIndex MUST be in the signal index range (see QObjectPrivate::signalIndex()).
334 This is different from QMetaMethod::methodIndex().
336 void QQmlPropertyCache::appendProperty(const QString &name,
337 quint32 flags, int coreIndex, int propType, int notifyIndex)
339 QQmlPropertyData data;
340 data.propType = propType;
341 data.coreIndex = coreIndex;
342 data.notifyIndex = notifyIndex;
345 QHashedString string(name);
346 if (QQmlPropertyData **old = stringCache.value(string)) {
347 data.overrideIndexIsProperty = !(*old)->isFunction();
348 data.overrideIndex = (*old)->coreIndex;
351 propertyIndexCache.append(data);
353 stringCache.insert(string, propertyIndexCache.data() + propertyIndexCache.count() - 1);
356 void QQmlPropertyCache::appendProperty(const QHashedCStringRef &name,
357 quint32 flags, int coreIndex, int propType, int notifyIndex)
359 QQmlPropertyData data;
360 data.propType = propType;
361 data.coreIndex = coreIndex;
362 data.notifyIndex = notifyIndex;
365 if (QQmlPropertyData **old = stringCache.value(name)) {
366 data.overrideIndexIsProperty = !(*old)->isFunction();
367 data.overrideIndex = (*old)->coreIndex;
370 propertyIndexCache.append(data);
372 stringCache.insert(name, propertyIndexCache.data() + propertyIndexCache.count() - 1);
375 void QQmlPropertyCache::appendSignal(const QString &name, quint32 flags, int coreIndex,
376 const int *types, const QList<QByteArray> &names)
378 QQmlPropertyData data;
379 data.propType = QVariant::Invalid;
380 data.coreIndex = coreIndex;
384 QQmlPropertyData handler = data;
385 handler.flags |= QQmlPropertyData::IsSignalHandler;
388 int argumentCount = *types;
389 typedef QQmlPropertyCacheMethodArguments A;
390 A *args = static_cast<A *>(malloc(sizeof(A) + (argumentCount + 1) * sizeof(int)));
391 ::memcpy(args->arguments, types, (argumentCount + 1) * sizeof(int));
392 args->names = new QList<QByteArray>(names);
393 args->next = argumentsCache;
394 argumentsCache = args;
395 data.arguments = args;
398 QString handlerName = QLatin1String("on") + name;
399 handlerName[2] = handlerName[2].toUpper();
401 QHashedString string(name);
402 if (QQmlPropertyData **old = stringCache.value(string)) {
403 data.overrideIndexIsProperty = !(*old)->isFunction();
404 data.overrideIndex = (*old)->coreIndex;
407 methodIndexCache.append(data);
408 signalHandlerIndexCache.append(handler);
410 stringCache.insert(string, methodIndexCache.data() + methodIndexCache.count() - 1);
411 stringCache.insert(handlerName, signalHandlerIndexCache.data() + signalHandlerIndexCache.count() - 1);
414 void QQmlPropertyCache::appendSignal(const QHashedCStringRef &name, quint32 flags, int coreIndex,
415 const int *types, const QList<QByteArray> &names)
417 QQmlPropertyData data;
418 data.propType = QVariant::Invalid;
419 data.coreIndex = coreIndex;
423 QQmlPropertyData handler = data;
424 handler.flags |= QQmlPropertyData::IsSignalHandler;
427 int argumentCount = *types;
428 typedef QQmlPropertyCacheMethodArguments A;
429 A *args = static_cast<A *>(malloc(sizeof(A) + (argumentCount + 1) * sizeof(int)));
430 ::memcpy(args->arguments, types, (argumentCount + 1) * sizeof(int));
431 args->names = new QList<QByteArray>(names);
432 args->next = argumentsCache;
433 argumentsCache = args;
434 data.arguments = args;
437 QString handlerName = QLatin1String("on") + name.toUtf16();
438 handlerName[2] = handlerName[2].toUpper();
440 if (QQmlPropertyData **old = stringCache.value(name)) {
441 data.overrideIndexIsProperty = !(*old)->isFunction();
442 data.overrideIndex = (*old)->coreIndex;
445 methodIndexCache.append(data);
446 signalHandlerIndexCache.append(handler);
448 stringCache.insert(name, methodIndexCache.data() + methodIndexCache.count() - 1);
449 stringCache.insert(handlerName, signalHandlerIndexCache.data() + signalHandlerIndexCache.count() - 1);
452 void QQmlPropertyCache::appendMethod(const QString &name, quint32 flags, int coreIndex,
453 const QList<QByteArray> &names)
455 int argumentCount = names.count();
457 QQmlPropertyData data;
458 data.propType = QMetaType::QVariant;
459 data.coreIndex = coreIndex;
461 typedef QQmlPropertyCacheMethodArguments A;
462 A *args = static_cast<A *>(malloc(sizeof(A) + (argumentCount + 1) * sizeof(int)));
463 args->arguments[0] = argumentCount;
464 for (int ii = 0; ii < argumentCount; ++ii)
465 args->arguments[ii + 1] = QMetaType::QVariant;
468 args->names = new QList<QByteArray>(names);
469 args->next = argumentsCache;
470 argumentsCache = args;
471 data.arguments = args;
475 QHashedString string(name);
476 if (QQmlPropertyData **old = stringCache.value(string)) {
477 data.overrideIndexIsProperty = !(*old)->isFunction();
478 data.overrideIndex = (*old)->coreIndex;
481 methodIndexCache.append(data);
483 stringCache.insert(string, methodIndexCache.data() + methodIndexCache.count() - 1);
486 void QQmlPropertyCache::appendMethod(const QHashedCStringRef &name, quint32 flags, int coreIndex,
487 const QList<QByteArray> &names)
489 int argumentCount = names.count();
491 QQmlPropertyData data;
492 data.propType = QMetaType::QVariant;
493 data.coreIndex = coreIndex;
495 typedef QQmlPropertyCacheMethodArguments A;
496 A *args = static_cast<A *>(malloc(sizeof(A) + (argumentCount + 1) * sizeof(int)));
497 args->arguments[0] = argumentCount;
498 for (int ii = 0; ii < argumentCount; ++ii)
499 args->arguments[ii + 1] = QMetaType::QVariant;
502 args->names = new QList<QByteArray>(names);
503 args->next = argumentsCache;
504 argumentsCache = args;
505 data.arguments = args;
509 if (QQmlPropertyData **old = stringCache.value(name)) {
510 data.overrideIndexIsProperty = !(*old)->isFunction();
511 data.overrideIndex = (*old)->coreIndex;
514 methodIndexCache.append(data);
516 stringCache.insert(name, methodIndexCache.data() + methodIndexCache.count() - 1);
519 // Returns this property cache's metaObject. May be null if it hasn't been created yet.
520 const QMetaObject *QQmlPropertyCache::metaObject() const
525 // Returns this property cache's metaObject, creating it if necessary.
526 const QMetaObject *QQmlPropertyCache::createMetaObject()
529 _ownMetaObject = true;
531 QMetaObjectBuilder builder;
532 toMetaObjectBuilder(builder);
533 builder.setSuperClass(_parent->createMetaObject());
534 _metaObject = builder.toMetaObject();
540 // Returns the name of the default property for this cache
541 QString QQmlPropertyCache::defaultPropertyName() const
543 return _defaultPropertyName;
546 QQmlPropertyData *QQmlPropertyCache::defaultProperty() const
548 return property(defaultPropertyName());
551 QQmlPropertyCache *QQmlPropertyCache::parent() const
556 // Returns the first C++ type's QMetaObject - that is, the first QMetaObject not created by
558 const QMetaObject *QQmlPropertyCache::firstCppMetaObject() const
560 while (_parent && (_metaObject == 0 || _ownMetaObject))
561 return _parent->firstCppMetaObject();
566 QQmlPropertyCache::copyAndAppend(QQmlEngine *engine, const QMetaObject *metaObject,
567 QQmlPropertyData::Flag propertyFlags,
568 QQmlPropertyData::Flag methodFlags,
569 QQmlPropertyData::Flag signalFlags)
571 return copyAndAppend(engine, metaObject, -1, propertyFlags, methodFlags, signalFlags);
575 QQmlPropertyCache::copyAndAppend(QQmlEngine *engine, const QMetaObject *metaObject,
577 QQmlPropertyData::Flag propertyFlags,
578 QQmlPropertyData::Flag methodFlags,
579 QQmlPropertyData::Flag signalFlags)
581 Q_ASSERT(QMetaObjectPrivate::get(metaObject)->revision >= 4);
583 // Reserve enough space in the name hash for all the methods (including signals), all the
584 // signal handlers and all the properties. This assumes no name clashes, but this is the
586 QQmlPropertyCache *rv = copy(QMetaObjectPrivate::get(metaObject)->methodCount +
587 QMetaObjectPrivate::get(metaObject)->signalCount +
588 QMetaObjectPrivate::get(metaObject)->propertyCount);
590 rv->append(engine, metaObject, revision, propertyFlags, methodFlags, signalFlags);
595 void QQmlPropertyCache::append(QQmlEngine *engine, const QMetaObject *metaObject,
597 QQmlPropertyData::Flag propertyFlags,
598 QQmlPropertyData::Flag methodFlags,
599 QQmlPropertyData::Flag signalFlags)
602 Q_ASSERT(constructor.IsEmpty()); // We should not be appending to an in-use property cache
604 _metaObject = metaObject;
606 bool dynamicMetaObject = isDynamicMetaObject(metaObject);
608 allowedRevisionCache.append(0);
610 int methodCount = metaObject->methodCount();
611 Q_ASSERT(QMetaObjectPrivate::get(metaObject)->revision >= 4);
612 int signalCount = metaObjectSignalCount(metaObject);
613 int classInfoCount = QMetaObjectPrivate::get(metaObject)->classInfoCount;
615 QQmlAccessorProperties::Properties accessorProperties;
617 if (classInfoCount) {
618 int classInfoOffset = metaObject->classInfoOffset();
619 bool hasFastProperty = false;
620 for (int ii = 0; ii < classInfoCount; ++ii) {
621 int idx = ii + classInfoOffset;
623 if (0 == qstrcmp(metaObject->classInfo(idx).name(), "qt_HasQmlAccessors")) {
624 hasFastProperty = true;
625 } else if (0 == qstrcmp(metaObject->classInfo(idx).name(), "DefaultProperty")) {
626 _defaultPropertyName = QString::fromUtf8(metaObject->classInfo(idx).value());
630 if (hasFastProperty) {
631 accessorProperties = QQmlAccessorProperties::properties(metaObject);
632 if (accessorProperties.count == 0)
633 qFatal("QQmlPropertyCache: %s has FastProperty class info, but has not "
634 "installed property accessors", metaObject->className());
637 accessorProperties = QQmlAccessorProperties::properties(metaObject);
638 if (accessorProperties.count != 0)
639 qFatal("QQmlPropertyCache: %s has fast property accessors, but is missing "
640 "FastProperty class info", metaObject->className());
645 //Used to block access to QObject::destroyed() and QObject::deleteLater() from QML
646 static const int destroyedIdx1 = QObject::staticMetaObject.indexOfSignal("destroyed(QObject*)");
647 static const int destroyedIdx2 = QObject::staticMetaObject.indexOfSignal("destroyed()");
648 static const int deleteLaterIdx = QObject::staticMetaObject.indexOfSlot("deleteLater()");
650 int methodOffset = metaObject->methodOffset();
651 int signalOffset = signalCount - QMetaObjectPrivate::get(metaObject)->signalCount;
653 // update() should have reserved enough space in the vector that this doesn't cause a realloc
654 // and invalidate the stringCache.
655 methodIndexCache.resize(methodCount - methodIndexCacheStart);
656 signalHandlerIndexCache.resize(signalCount - signalHandlerIndexCacheStart);
657 int signalHandlerIndex = signalOffset;
658 for (int ii = methodOffset; ii < methodCount; ++ii) {
659 if (ii == destroyedIdx1 || ii == destroyedIdx2 || ii == deleteLaterIdx)
661 QMetaMethod m = metaObject->method(ii);
662 if (m.access() == QMetaMethod::Private)
665 // Extract method name
666 // It's safe to keep the raw name pointer
667 Q_ASSERT(QMetaObjectPrivate::get(metaObject)->revision >= 7);
668 const char *rawName = m.name().constData();
669 const char *cptr = rawName;
672 utf8 |= *cptr & 0x80;
676 QQmlPropertyData *data = &methodIndexCache[ii - methodIndexCacheStart];
677 QQmlPropertyData *sigdata = 0;
681 if (data->isSignal())
682 data->flags |= signalFlags;
684 data->flags |= methodFlags;
686 if (!dynamicMetaObject)
687 data->flags |= QQmlPropertyData::IsDirect;
689 Q_ASSERT((allowedRevisionCache.count() - 1) < Q_INT16_MAX);
690 data->metaObjectOffset = allowedRevisionCache.count() - 1;
692 if (data->isSignal()) {
693 sigdata = &signalHandlerIndexCache[signalHandlerIndex - signalHandlerIndexCacheStart];
695 sigdata->flags |= QQmlPropertyData::IsSignalHandler;
698 QQmlPropertyData *old = 0;
701 QHashedString methodName(QString::fromUtf8(rawName, cptr - rawName));
702 if (QQmlPropertyData **it = stringCache.value(methodName))
704 stringCache.insert(methodName, data);
706 if (data->isSignal()) {
707 QHashedString on(QStringLiteral("on") % methodName.at(0).toUpper() % methodName.midRef(1));
708 stringCache.insert(on, sigdata);
709 ++signalHandlerIndex;
712 QHashedCStringRef methodName(rawName, cptr - rawName);
713 if (QQmlPropertyData **it = stringCache.value(methodName))
715 stringCache.insert(methodName, data);
717 if (data->isSignal()) {
718 int length = methodName.length();
720 QVarLengthArray<char, 128> str(length+3);
723 str[2] = toupper(rawName[0]);
725 memcpy(&str[3], &rawName[1], length - 1);
726 str[length + 2] = '\0';
728 QHashedString on(QString::fromLatin1(str.data()));
729 stringCache.insert(on, sigdata);
730 ++signalHandlerIndex;
735 // We only overload methods in the same class, exactly like C++
736 if (old->isFunction() && old->coreIndex >= methodOffset)
737 data->flags |= QQmlPropertyData::IsOverload;
738 data->overrideIndexIsProperty = !old->isFunction();
739 data->overrideIndex = old->coreIndex;
743 int propCount = metaObject->propertyCount();
744 int propOffset = metaObject->propertyOffset();
746 // update() should have reserved enough space in the vector that this doesn't cause a realloc
747 // and invalidate the stringCache.
748 propertyIndexCache.resize(propCount - propertyIndexCacheStart);
749 for (int ii = propOffset; ii < propCount; ++ii) {
750 QMetaProperty p = metaObject->property(ii);
751 if (!p.isScriptable())
754 const char *str = p.name();
756 const char *cptr = str;
758 utf8 |= *cptr & 0x80;
762 QQmlPropertyData *data = &propertyIndexCache[ii - propertyIndexCacheStart];
764 data->lazyLoad(p, engine);
765 data->flags |= propertyFlags;
767 if (!dynamicMetaObject)
768 data->flags |= QQmlPropertyData::IsDirect;
770 Q_ASSERT((allowedRevisionCache.count() - 1) < Q_INT16_MAX);
771 data->metaObjectOffset = allowedRevisionCache.count() - 1;
773 QQmlPropertyData *old = 0;
776 QHashedString propName(QString::fromUtf8(str, cptr - str));
777 if (QQmlPropertyData **it = stringCache.value(propName))
779 stringCache.insert(propName, data);
781 QHashedCStringRef propName(str, cptr - str);
782 if (QQmlPropertyData **it = stringCache.value(propName))
784 stringCache.insert(propName, data);
787 QQmlAccessorProperties::Property *accessorProperty = accessorProperties.property(str);
789 // Fast properties may not be overrides or revisioned
790 Q_ASSERT(accessorProperty == 0 || (old == 0 && data->revision == 0));
792 if (accessorProperty) {
793 data->flags |= QQmlPropertyData::HasAccessors;
794 data->accessors = accessorProperty->accessors;
795 data->accessorData = accessorProperty->data;
797 data->overrideIndexIsProperty = !old->isFunction();
798 data->overrideIndex = old->coreIndex;
803 void QQmlPropertyCache::resolve(QQmlPropertyData *data) const
805 Q_ASSERT(data->notFullyResolved());
807 data->propType = QMetaType::type(data->propTypeName);
809 if (!data->isFunction())
810 data->flags |= flagsForPropertyType(data->propType, engine);
812 data->flags &= ~QQmlPropertyData::NotFullyResolved;
815 void QQmlPropertyCache::updateRecur(QQmlEngine *engine, const QMetaObject *metaObject)
820 updateRecur(engine, metaObject->superClass());
822 append(engine, metaObject, -1);
825 void QQmlPropertyCache::update(QQmlEngine *engine, const QMetaObject *metaObject)
828 Q_ASSERT(metaObject);
829 Q_ASSERT(stringCache.isEmpty());
831 // Preallocate enough space in the index caches for all the properties/methods/signals that
832 // are not cached in a parent cache so that the caches never need to be reallocated as this
833 // would invalidate pointers stored in the stringCache.
834 int pc = metaObject->propertyCount();
835 int mc = metaObject->methodCount();
836 int sc = metaObjectSignalCount(metaObject);
837 propertyIndexCache.reserve(pc - propertyIndexCacheStart);
838 methodIndexCache.reserve(mc - methodIndexCacheStart);
839 signalHandlerIndexCache.reserve(sc - signalHandlerIndexCacheStart);
841 // Reserve enough space in the stringCache for all properties/methods/signals including those
842 // cached in a parent cache.
843 stringCache.reserve(pc + mc + sc);
845 updateRecur(engine,metaObject);
849 \a index MUST be in the signal index range (see QObjectPrivate::signalIndex()).
850 This is different from QMetaMethod::methodIndex().
853 QQmlPropertyCache::signal(int index) const
855 if (index < 0 || index >= (signalHandlerIndexCacheStart + signalHandlerIndexCache.count()))
858 if (index < signalHandlerIndexCacheStart)
859 return _parent->signal(index);
861 QQmlPropertyData *rv = const_cast<QQmlPropertyData *>(&methodIndexCache.at(index - signalHandlerIndexCacheStart));
862 if (rv->notFullyResolved()) resolve(rv);
863 Q_ASSERT(rv->isSignal() || rv->coreIndex == -1);
867 int QQmlPropertyCache::methodIndexToSignalIndex(int index) const
869 if (index < 0 || index >= (methodIndexCacheStart + methodIndexCache.count()))
872 if (index < methodIndexCacheStart)
873 return _parent->methodIndexToSignalIndex(index);
875 return index - methodIndexCacheStart + signalHandlerIndexCacheStart;
879 QQmlPropertyCache::property(int index) const
881 if (index < 0 || index >= (propertyIndexCacheStart + propertyIndexCache.count()))
884 if (index < propertyIndexCacheStart)
885 return _parent->property(index);
887 QQmlPropertyData *rv = const_cast<QQmlPropertyData *>(&propertyIndexCache.at(index - propertyIndexCacheStart));
888 if (rv->notFullyResolved()) resolve(rv);
893 QQmlPropertyCache::method(int index) const
895 if (index < 0 || index >= (methodIndexCacheStart + methodIndexCache.count()))
898 if (index < methodIndexCacheStart)
899 return _parent->method(index);
901 QQmlPropertyData *rv = const_cast<QQmlPropertyData *>(&methodIndexCache.at(index - methodIndexCacheStart));
902 if (rv->notFullyResolved()) resolve(rv);
907 QQmlPropertyCache::property(const QHashedStringRef &str) const
909 QQmlPropertyData **rv = stringCache.value(str);
910 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
915 QQmlPropertyCache::property(const QHashedCStringRef &str) const
917 QQmlPropertyData **rv = stringCache.value(str);
918 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
923 QQmlPropertyCache::property(const QString &str) const
925 QQmlPropertyData **rv = stringCache.value(str);
926 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
930 QString QQmlPropertyData::name(QObject *object)
935 return name(object->metaObject());
938 QString QQmlPropertyData::name(const QMetaObject *metaObject)
940 if (!metaObject || coreIndex == -1)
943 if (flags & IsFunction) {
944 QMetaMethod m = metaObject->method(coreIndex);
946 return QString::fromUtf8(m.name().constData());
948 QMetaProperty p = metaObject->property(coreIndex);
949 return QString::fromUtf8(p.name());
953 QStringList QQmlPropertyCache::propertyNames() const
956 for (StringCache::ConstIterator iter = stringCache.begin(); iter != stringCache.end(); ++iter)
957 keys.append(iter.key());
961 struct StaticQtMetaObject : public QObject
963 static const QMetaObject *get()
964 { return &static_cast<StaticQtMetaObject*> (0)->staticQtMetaObject; }
967 static int EnumType(const QMetaObject *metaobj, const QByteArray &str, int type)
971 int scopeIdx = str.lastIndexOf("::");
972 if (scopeIdx != -1) {
973 scope = str.left(scopeIdx);
974 name = str.mid(scopeIdx + 2);
978 const QMetaObject *meta;
980 meta = StaticQtMetaObject::get();
983 for (int i = meta->enumeratorCount() - 1; i >= 0; --i) {
984 QMetaEnum m = meta->enumerator(i);
985 if ((m.name() == name) && (scope.isEmpty() || (m.scope() == scope)))
986 return QVariant::Int;
992 \a index MUST be in the signal index range (see QObjectPrivate::signalIndex()).
993 This is different from QMetaMethod::methodIndex().
995 QList<QByteArray> QQmlPropertyCache::signalParameterNames(QObject *object, int index)
997 QQmlData *data = QQmlData::get(object, false);
998 if (data->propertyCache) {
999 QQmlPropertyData *p = data->propertyCache->signal(index);
1000 if (!p->hasArguments())
1001 return QList<QByteArray>();
1004 return QMetaObjectPrivate::signal(object->metaObject(), index).parameterNames();
1007 // Returns an array of the arguments for method \a index. The first entry in the array
1008 // is the number of arguments.
1009 int *QQmlPropertyCache::methodParameterTypes(QObject *object, int index,
1010 QVarLengthArray<int, 9> &dummy,
1011 QByteArray *unknownTypeError)
1013 Q_ASSERT(object && index >= 0);
1015 QQmlData *ddata = QQmlData::get(object, false);
1017 if (ddata && ddata->propertyCache) {
1018 typedef QQmlPropertyCacheMethodArguments A;
1020 QQmlPropertyCache *c = ddata->propertyCache;
1021 Q_ASSERT(index < c->methodIndexCacheStart + c->methodIndexCache.count());
1023 while (index < c->methodIndexCacheStart)
1026 QQmlPropertyData *rv = const_cast<QQmlPropertyData *>(&c->methodIndexCache.at(index - c->methodIndexCacheStart));
1029 return static_cast<A *>(rv->arguments)->arguments;
1031 const QMetaObject *metaObject = c->createMetaObject();
1032 Q_ASSERT(metaObject);
1033 QMetaMethod m = metaObject->method(index);
1035 int argc = m.parameterCount();
1036 A *args = static_cast<A *>(malloc(sizeof(A) + (argc + 1) * sizeof(int)));
1037 args->arguments[0] = argc;
1039 QList<QByteArray> argTypeNames; // Only loaded if needed
1041 for (int ii = 0; ii < argc; ++ii) {
1042 int type = m.parameterType(ii);
1043 QMetaType::TypeFlags flags = QMetaType::typeFlags(type);
1044 if (flags & QMetaType::IsEnumeration)
1045 type = QVariant::Int;
1046 else if (type == QMetaType::UnknownType ||
1047 (type >= (int)QVariant::UserType && !(flags & QMetaType::PointerToQObject) &&
1048 type != qMetaTypeId<QJSValue>())) {
1049 //the UserType clause is to catch registered QFlags
1050 if (argTypeNames.isEmpty())
1051 argTypeNames = m.parameterTypes();
1052 type = EnumType(object->metaObject(), argTypeNames.at(ii), type);
1054 if (type == QMetaType::UnknownType) {
1055 if (unknownTypeError) *unknownTypeError = argTypeNames.at(ii);
1059 args->arguments[ii + 1] = type;
1062 rv->arguments = args;
1063 args->next = c->argumentsCache;
1064 c->argumentsCache = args;
1065 return static_cast<A *>(rv->arguments)->arguments;
1068 QMetaMethod m = object->metaObject()->method(index);
1069 int argc = m.parameterCount();
1070 dummy.resize(argc + 1);
1072 QList<QByteArray> argTypeNames; // Only loaded if needed
1074 for (int ii = 0; ii < argc; ++ii) {
1075 int type = m.parameterType(ii);
1076 QMetaType::TypeFlags flags = QMetaType::typeFlags(type);
1077 if (flags & QMetaType::IsEnumeration)
1078 type = QVariant::Int;
1079 else if (type == QMetaType::UnknownType ||
1080 (type >= (int)QVariant::UserType && !(flags & QMetaType::PointerToQObject) &&
1081 type != qMetaTypeId<QJSValue>())) {
1082 //the UserType clause is to catch registered QFlags)
1083 if (argTypeNames.isEmpty())
1084 argTypeNames = m.parameterTypes();
1085 type = EnumType(object->metaObject(), argTypeNames.at(ii), type);
1087 if (type == QMetaType::UnknownType) {
1088 if (unknownTypeError) *unknownTypeError = argTypeNames.at(ii);
1091 dummy[ii + 1] = type;
1094 return dummy.data();
1098 // Returns the return type of the method.
1099 int QQmlPropertyCache::methodReturnType(QObject *object, const QQmlPropertyData &data,
1100 QByteArray *unknownTypeError)
1102 Q_ASSERT(object && data.coreIndex >= 0);
1104 int type = data.propType;
1106 const char *propTypeName = 0;
1108 if (type == QMetaType::UnknownType) {
1109 // Find the return type name from the method info
1112 QQmlData *ddata = QQmlData::get(object, false);
1113 if (ddata && ddata->propertyCache) {
1114 QQmlPropertyCache *c = ddata->propertyCache;
1115 Q_ASSERT(data.coreIndex < c->methodIndexCacheStart + c->methodIndexCache.count());
1117 while (data.coreIndex < c->methodIndexCacheStart)
1120 const QMetaObject *metaObject = c->createMetaObject();
1121 Q_ASSERT(metaObject);
1122 m = metaObject->method(data.coreIndex);
1124 m = object->metaObject()->method(data.coreIndex);
1127 type = m.returnType();
1128 propTypeName = m.typeName();
1131 QMetaType::TypeFlags flags = QMetaType::typeFlags(type);
1132 if (flags & QMetaType::IsEnumeration) {
1133 type = QVariant::Int;
1134 } else if (type == QMetaType::UnknownType ||
1135 (type >= (int)QVariant::UserType && !(flags & QMetaType::PointerToQObject) &&
1136 type != qMetaTypeId<QJSValue>())) {
1137 //the UserType clause is to catch registered QFlags
1138 type = EnumType(object->metaObject(), propTypeName, type);
1141 if (type == QMetaType::UnknownType) {
1142 if (unknownTypeError) *unknownTypeError = propTypeName;
1148 QQmlPropertyData qQmlPropertyCacheCreate(const QMetaObject *metaObject, const QString &property)
1150 Q_ASSERT(metaObject);
1152 QQmlPropertyData rv;
1154 const QMetaObject *cmo = metaObject;
1155 const QByteArray propertyName = property.toUtf8();
1157 int idx = cmo->indexOfProperty(propertyName);
1159 QMetaProperty p = cmo->property(idx);
1160 if (p.isScriptable()) {
1164 while (cmo && cmo->propertyOffset() >= idx)
1165 cmo = cmo->superClass();
1173 //Used to block access to QObject::destroyed() and QObject::deleteLater() from QML
1174 static const int destroyedIdx1 = QObject::staticMetaObject.indexOfSignal("destroyed(QObject*)");
1175 static const int destroyedIdx2 = QObject::staticMetaObject.indexOfSignal("destroyed()");
1176 static const int deleteLaterIdx = QObject::staticMetaObject.indexOfSlot("deleteLater()");
1178 int methodCount = metaObject->methodCount();
1179 for (int ii = methodCount - 1; ii >= 0; --ii) {
1180 if (ii == destroyedIdx1 || ii == destroyedIdx2 || ii == deleteLaterIdx)
1182 QMetaMethod m = metaObject->method(ii);
1183 if (m.access() == QMetaMethod::Private)
1185 QString methodName = QString::fromUtf8(m.name().constData());
1187 if (methodName == property) {
1196 inline const QString &qQmlPropertyCacheToString(const QString &string)
1201 inline QString qQmlPropertyCacheToString(const QHashedV8String &string)
1203 return QV8Engine::toStringStatic(string.string());
1206 template<typename T>
1208 qQmlPropertyCacheProperty(QQmlEngine *engine, QObject *obj, const T &name, QQmlPropertyData &local)
1210 QQmlPropertyCache *cache = 0;
1212 QQmlData *ddata = QQmlData::get(obj, false);
1214 if (ddata && ddata->propertyCache) {
1215 cache = ddata->propertyCache;
1216 } else if (engine) {
1217 QQmlEnginePrivate *ep = QQmlEnginePrivate::get(engine);
1218 cache = ep->cache(obj);
1220 ddata = QQmlData::get(obj, true);
1222 ddata->propertyCache = cache;
1226 QQmlPropertyData *rv = 0;
1229 rv = cache->property(name);
1231 local = qQmlPropertyCacheCreate(obj->metaObject(), qQmlPropertyCacheToString(name));
1232 if (local.isValid())
1240 QQmlPropertyCache::property(QQmlEngine *engine, QObject *obj,
1241 const QHashedV8String &name, QQmlPropertyData &local)
1243 return qQmlPropertyCacheProperty<QHashedV8String>(engine, obj, name, local);
1247 QQmlPropertyCache::property(QQmlEngine *engine, QObject *obj,
1248 const QString &name, QQmlPropertyData &local)
1250 return qQmlPropertyCacheProperty<QString>(engine, obj, name, local);
1253 static inline const QMetaObjectPrivate *priv(const uint* data)
1254 { return reinterpret_cast<const QMetaObjectPrivate*>(data); }
1256 bool QQmlPropertyCache::isDynamicMetaObject(const QMetaObject *mo)
1258 return priv(mo->d.data)->revision >= 3 && priv(mo->d.data)->flags & DynamicMetaObject;
1261 const char *QQmlPropertyCache::className() const
1263 if (!_ownMetaObject && _metaObject)
1264 return _metaObject->className();
1266 return _dynamicClassName.constData();
1269 void QQmlPropertyCache::toMetaObjectBuilder(QMetaObjectBuilder &builder)
1271 struct Sort { static bool lt(const QPair<QString, QQmlPropertyData *> &lhs,
1272 const QPair<QString, QQmlPropertyData *> &rhs) {
1273 return lhs.second->coreIndex < rhs.second->coreIndex;
1276 struct Insert { static void in(QQmlPropertyCache *This,
1277 QList<QPair<QString, QQmlPropertyData *> > &properties,
1278 QList<QPair<QString, QQmlPropertyData *> > &methods,
1279 StringCache::ConstIterator iter, QQmlPropertyData *data) {
1280 if (data->isSignalHandler())
1283 if (data->isFunction()) {
1284 if (data->coreIndex < This->methodIndexCacheStart)
1287 QPair<QString, QQmlPropertyData *> entry = qMakePair((QString)iter.key(), data);
1288 // Overrides can cause the entry to already exist
1289 if (!methods.contains(entry)) methods.append(entry);
1291 data = This->overrideData(data);
1292 if (data && !data->isFunction()) Insert::in(This, properties, methods, iter, data);
1294 if (data->coreIndex < This->propertyIndexCacheStart)
1297 QPair<QString, QQmlPropertyData *> entry = qMakePair((QString)iter.key(), data);
1298 // Overrides can cause the entry to already exist
1299 if (!properties.contains(entry)) properties.append(entry);
1301 data = This->overrideData(data);
1302 if (data) Insert::in(This, properties, methods, iter, data);
1307 builder.setClassName(_dynamicClassName);
1309 QList<QPair<QString, QQmlPropertyData *> > properties;
1310 QList<QPair<QString, QQmlPropertyData *> > methods;
1312 for (StringCache::ConstIterator iter = stringCache.begin(); iter != stringCache.end(); ++iter)
1313 Insert::in(this, properties, methods, iter, iter.value());
1315 Q_ASSERT(properties.count() == propertyIndexCache.count());
1316 Q_ASSERT(methods.count() == methodIndexCache.count());
1318 qSort(properties.begin(), properties.end(), Sort::lt);
1319 qSort(methods.begin(), methods.end(), Sort::lt);
1321 for (int ii = 0; ii < properties.count(); ++ii) {
1322 QQmlPropertyData *data = properties.at(ii).second;
1324 int notifierId = -1;
1325 if (data->notifyIndex != -1)
1326 notifierId = data->notifyIndex - signalHandlerIndexCacheStart;
1328 QMetaPropertyBuilder property = builder.addProperty(properties.at(ii).first.toUtf8(),
1329 QMetaType::typeName(data->propType),
1332 property.setReadable(true);
1333 property.setWritable(data->isWritable());
1334 property.setResettable(data->isResettable());
1337 for (int ii = 0; ii < methods.count(); ++ii) {
1338 QQmlPropertyData *data = methods.at(ii).second;
1340 QByteArray returnType;
1341 if (data->propType != 0)
1342 returnType = QMetaType::typeName(data->propType);
1344 QByteArray signature = methods.at(ii).first.toUtf8() + "(";
1346 QQmlPropertyCacheMethodArguments *arguments = 0;
1347 if (data->hasArguments()) {
1348 arguments = (QQmlPropertyCacheMethodArguments *)data->arguments;
1350 for (int ii = 0; ii < arguments->arguments[0]; ++ii) {
1351 if (ii != 0) signature.append(",");
1352 signature.append(QMetaType::typeName(arguments->arguments[1 + ii]));
1356 signature.append(")");
1358 QMetaMethodBuilder method;
1359 if (data->isSignal()) {
1360 method = builder.addSignal(signature);
1362 method = builder.addSlot(signature);
1364 method.setAccess(QMetaMethod::Protected);
1366 if (arguments && arguments->names)
1367 method.setParameterNames(*arguments->names);
1369 if (!returnType.isEmpty())
1370 method.setReturnType(returnType);
1373 if (!_defaultPropertyName.isEmpty()) {
1374 QQmlPropertyData *dp = property(_defaultPropertyName);
1375 if (dp && dp->coreIndex >= propertyIndexCacheStart) {
1376 Q_ASSERT(!dp->isFunction());
1377 builder.addClassInfo("DefaultProperty", _defaultPropertyName.toUtf8());
1382 // Returns true if \a from is assignable to a property of type \a to
1383 bool QQmlMetaObject::canConvert(const QQmlMetaObject &from, const QQmlMetaObject &to)
1385 Q_ASSERT(!from.isNull() && !to.isNull());
1387 struct I { static bool equal(const QMetaObject *lhs, const QMetaObject *rhs) {
1388 return lhs == rhs || (lhs && rhs && lhs->d.stringdata == rhs->d.stringdata);
1391 const QMetaObject *tom = to._m.isT1()?to._m.asT1()->metaObject():to._m.asT2();
1392 if (tom == &QObject::staticMetaObject) return true;
1394 if (from._m.isT1() && to._m.isT1()) { // QQmlPropertyCache -> QQmlPropertyCache
1395 QQmlPropertyCache *fromp = from._m.asT1();
1396 QQmlPropertyCache *top = to._m.asT1();
1399 if (fromp == top) return true;
1400 fromp = fromp->parent();
1402 } else if (from._m.isT1() && to._m.isT2()) { // QQmlPropertyCache -> QMetaObject
1403 QQmlPropertyCache *fromp = from._m.asT1();
1406 const QMetaObject *fromm = fromp->metaObject();
1407 if (fromm && I::equal(fromm, tom)) return true;
1408 fromp = fromp->parent();
1410 } else if (from._m.isT2() && to._m.isT1()) { // QMetaObject -> QQmlPropertyCache
1411 const QMetaObject *fromm = from._m.asT2();
1413 if (!tom) return false;
1416 if (I::equal(fromm, tom)) return true;
1417 fromm = fromm->superClass();
1419 } else { // QMetaObject -> QMetaObject
1420 const QMetaObject *fromm = from._m.asT2();
1423 if (I::equal(fromm, tom)) return true;
1424 fromm = fromm->superClass();
1431 QQmlPropertyCache *QQmlMetaObject::propertyCache(QQmlEnginePrivate *e) const
1433 if (_m.isNull()) return 0;
1434 if (_m.isT1()) return _m.asT1();
1435 else return e->cache(_m.asT2());