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470 lines
15 KiB
C++
470 lines
15 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdeclarativepropertycache_p.h"
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#include "qdeclarativeengine_p.h"
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#include "qdeclarativebinding_p.h"
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#include "qdeclarativecommon_p.h"
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#include "qdebug.h"
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QT_BEGIN_NAMESPACE
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QDeclarativePropertyCache::Data::Flags QDeclarativePropertyCache::Data::flagsForProperty(const QMetaProperty &p, QDeclarativeEngine *engine)
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{
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int propType = p.userType();
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Flags flags;
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if (p.isConstant())
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flags |= Data::IsConstant;
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if (p.isWritable())
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flags |= Data::IsWritable;
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if (p.isResettable())
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flags |= Data::IsResettable;
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if (propType == qMetaTypeId<QDeclarativeBinding *>()) {
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flags |= Data::IsQmlBinding;
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} else if (propType == qMetaTypeId<QScriptValue>()) {
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flags |= Data::IsQScriptValue;
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} else if (p.isEnumType()) {
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flags |= Data::IsEnumType;
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} else {
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QDeclarativeMetaType::TypeCategory cat = engine ? QDeclarativeEnginePrivate::get(engine)->typeCategory(propType)
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: QDeclarativeMetaType::typeCategory(propType);
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if (cat == QDeclarativeMetaType::Object)
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flags |= Data::IsQObjectDerived;
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else if (cat == QDeclarativeMetaType::List)
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flags |= Data::IsQList;
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}
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return flags;
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}
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void QDeclarativePropertyCache::Data::load(const QMetaProperty &p, QDeclarativeEngine *engine)
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{
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propType = p.userType();
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if (QVariant::Type(propType) == QVariant::LastType)
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propType = qMetaTypeId<QVariant>();
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coreIndex = p.propertyIndex();
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notifyIndex = p.notifySignalIndex();
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flags = flagsForProperty(p, engine);
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revision = p.revision();
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}
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void QDeclarativePropertyCache::Data::load(const QMetaMethod &m)
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{
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coreIndex = m.methodIndex();
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relatedIndex = -1;
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flags |= Data::IsFunction;
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if (m.methodType() == QMetaMethod::Signal)
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flags |= Data::IsSignal;
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propType = QVariant::Invalid;
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const char *returnType = m.typeName();
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if (returnType)
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propType = QMetaType::type(returnType);
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QList<QByteArray> params = m.parameterTypes();
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if (!params.isEmpty())
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flags |= Data::HasArguments;
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revision = m.revision();
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}
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/*!
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Creates a new empty QDeclarativePropertyCache.
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*/
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QDeclarativePropertyCache::QDeclarativePropertyCache(QDeclarativeEngine *e)
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: QDeclarativeCleanup(e), engine(e)
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{
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Q_ASSERT(engine);
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}
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/*!
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Creates a new QDeclarativePropertyCache of \a metaObject.
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*/
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QDeclarativePropertyCache::QDeclarativePropertyCache(QDeclarativeEngine *e, const QMetaObject *metaObject)
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: QDeclarativeCleanup(e), engine(e)
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{
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Q_ASSERT(engine);
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Q_ASSERT(metaObject);
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update(engine, metaObject);
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}
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QDeclarativePropertyCache::~QDeclarativePropertyCache()
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{
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clear();
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}
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void QDeclarativePropertyCache::clear()
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{
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for (int ii = 0; ii < indexCache.count(); ++ii) {
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if (indexCache.at(ii)) indexCache.at(ii)->release();
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}
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for (int ii = 0; ii < methodIndexCache.count(); ++ii) {
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RData *data = methodIndexCache.at(ii);
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if (data) data->release();
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}
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for (StringCache::ConstIterator iter = stringCache.begin();
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iter != stringCache.end(); ++iter) {
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RData *data = (*iter);
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data->release();
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}
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for (IdentifierCache::ConstIterator iter = identifierCache.begin();
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iter != identifierCache.end(); ++iter) {
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RData *data = (*iter);
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data->release();
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}
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indexCache.clear();
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methodIndexCache.clear();
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stringCache.clear();
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identifierCache.clear();
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}
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QDeclarativePropertyCache::Data QDeclarativePropertyCache::create(const QMetaObject *metaObject,
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const QString &property)
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{
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Q_ASSERT(metaObject);
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QDeclarativePropertyCache::Data rv;
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{
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const QMetaObject *cmo = metaObject;
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while (cmo) {
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int idx = metaObject->indexOfProperty(property.toUtf8());
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if (idx != -1) {
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QMetaProperty p = metaObject->property(idx);
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if (p.isScriptable()) {
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rv.load(metaObject->property(idx));
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return rv;
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} else {
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while (cmo && cmo->propertyOffset() >= idx)
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cmo = cmo->superClass();
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}
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} else {
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cmo = 0;
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}
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}
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}
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int methodCount = metaObject->methodCount();
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for (int ii = methodCount - 1; ii >= 3; --ii) { // >=3 to block the destroyed signal and deleteLater() slot
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QMetaMethod m = metaObject->method(ii);
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if (m.access() == QMetaMethod::Private)
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continue;
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QString methodName = QString::fromUtf8(m.signature());
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int parenIdx = methodName.indexOf(QLatin1Char('('));
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Q_ASSERT(parenIdx != -1);
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QStringRef methodNameRef = methodName.leftRef(parenIdx);
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if (methodNameRef == property) {
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rv.load(m);
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return rv;
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}
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}
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return rv;
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}
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QDeclarativePropertyCache *QDeclarativePropertyCache::copy() const
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{
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QDeclarativePropertyCache *cache = new QDeclarativePropertyCache(engine);
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cache->indexCache = indexCache;
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cache->methodIndexCache = methodIndexCache;
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cache->stringCache = stringCache;
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cache->identifierCache = identifierCache;
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cache->allowedRevisionCache = allowedRevisionCache;
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for (int ii = 0; ii < indexCache.count(); ++ii) {
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if (indexCache.at(ii)) indexCache.at(ii)->addref();
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}
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for (int ii = 0; ii < methodIndexCache.count(); ++ii) {
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if (methodIndexCache.at(ii)) methodIndexCache.at(ii)->addref();
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}
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for (StringCache::ConstIterator iter = stringCache.begin(); iter != stringCache.end(); ++iter)
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(*iter)->addref();
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for (IdentifierCache::ConstIterator iter = identifierCache.begin(); iter != identifierCache.end(); ++iter)
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(*iter)->addref();
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return cache;
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}
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void QDeclarativePropertyCache::append(QDeclarativeEngine *engine, const QMetaObject *metaObject,
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Data::Flag propertyFlags, Data::Flag methodFlags, Data::Flag signalFlags)
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{
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append(engine, metaObject, -1, propertyFlags, methodFlags, signalFlags);
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}
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void QDeclarativePropertyCache::append(QDeclarativeEngine *engine, const QMetaObject *metaObject,
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int revision,
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Data::Flag propertyFlags, Data::Flag methodFlags, Data::Flag signalFlags)
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{
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Q_UNUSED(revision);
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allowedRevisionCache.append(0);
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QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
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int methodCount = metaObject->methodCount();
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// 3 to block the destroyed signal and the deleteLater() slot
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int methodOffset = qMax(3, metaObject->methodOffset());
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methodIndexCache.resize(methodCount);
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for (int ii = methodOffset; ii < methodCount; ++ii) {
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QMetaMethod m = metaObject->method(ii);
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if (m.access() == QMetaMethod::Private)
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continue;
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QString methodName = QString::fromUtf8(m.signature());
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int parenIdx = methodName.indexOf(QLatin1Char('('));
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Q_ASSERT(parenIdx != -1);
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methodName = methodName.left(parenIdx);
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RData *data = new RData;
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data->identifier = enginePriv->objectClass->createPersistentIdentifier(methodName);
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methodIndexCache[ii] = data;
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data->load(m);
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if (m.methodType() == QMetaMethod::Slot || m.methodType() == QMetaMethod::Method)
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data->flags |= methodFlags;
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else if (m.methodType() == QMetaMethod::Signal)
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data->flags |= signalFlags;
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data->metaObjectOffset = allowedRevisionCache.count() - 1;
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if (stringCache.contains(methodName)) {
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RData *old = stringCache[methodName];
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// We only overload methods in the same class, exactly like C++
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if (old->flags & Data::IsFunction && old->coreIndex >= methodOffset)
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data->relatedIndex = old->coreIndex;
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data->overrideIndexIsProperty = !bool(old->flags & Data::IsFunction);
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data->overrideIndex = old->coreIndex;
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stringCache[methodName]->release();
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identifierCache[data->identifier.identifier]->release();
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}
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stringCache.insert(methodName, data);
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identifierCache.insert(data->identifier.identifier, data);
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data->addref();
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data->addref();
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}
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int propCount = metaObject->propertyCount();
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int propOffset = metaObject->propertyOffset();
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indexCache.resize(propCount);
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for (int ii = propOffset; ii < propCount; ++ii) {
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QMetaProperty p = metaObject->property(ii);
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if (!p.isScriptable())
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continue;
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QString propName = QString::fromUtf8(p.name());
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RData *data = new RData;
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data->identifier = enginePriv->objectClass->createPersistentIdentifier(propName);
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indexCache[ii] = data;
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data->load(p, engine);
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data->flags |= propertyFlags;
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data->metaObjectOffset = allowedRevisionCache.count() - 1;
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if (stringCache.contains(propName)) {
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RData *old = stringCache[propName];
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data->overrideIndexIsProperty = !bool(old->flags & Data::IsFunction);
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data->overrideIndex = old->coreIndex;
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stringCache[propName]->release();
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identifierCache[data->identifier.identifier]->release();
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}
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stringCache.insert(propName, data);
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identifierCache.insert(data->identifier.identifier, data);
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data->addref();
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data->addref();
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}
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}
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void QDeclarativePropertyCache::updateRecur(QDeclarativeEngine *engine, const QMetaObject *metaObject)
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{
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if (!metaObject)
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return;
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updateRecur(engine, metaObject->superClass());
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append(engine, metaObject);
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}
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void QDeclarativePropertyCache::update(QDeclarativeEngine *engine, const QMetaObject *metaObject)
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{
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Q_ASSERT(engine);
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Q_ASSERT(metaObject);
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clear();
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// Optimization to prevent unnecessary reallocation of lists
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indexCache.reserve(metaObject->propertyCount());
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methodIndexCache.reserve(metaObject->methodCount());
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updateRecur(engine,metaObject);
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}
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QDeclarativePropertyCache::Data *
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QDeclarativePropertyCache::property(int index) const
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{
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if (index < 0 || index >= indexCache.count())
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return 0;
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return indexCache.at(index);
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}
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QDeclarativePropertyCache::Data *
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QDeclarativePropertyCache::method(int index) const
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{
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if (index < 0 || index >= methodIndexCache.count())
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return 0;
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return methodIndexCache.at(index);
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}
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QDeclarativePropertyCache::Data *
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QDeclarativePropertyCache::property(const QString &str) const
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{
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return stringCache.value(str);
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}
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QString QDeclarativePropertyCache::Data::name(QObject *object)
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{
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if (!object)
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return QString();
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return name(object->metaObject());
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}
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QString QDeclarativePropertyCache::Data::name(const QMetaObject *metaObject)
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{
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if (!metaObject || coreIndex == -1)
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return QString();
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if (flags & IsFunction) {
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QMetaMethod m = metaObject->method(coreIndex);
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QString name = QString::fromUtf8(m.signature());
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int parenIdx = name.indexOf(QLatin1Char('('));
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if (parenIdx != -1)
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name = name.left(parenIdx);
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return name;
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} else {
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QMetaProperty p = metaObject->property(coreIndex);
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return QString::fromUtf8(p.name());
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}
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}
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QStringList QDeclarativePropertyCache::propertyNames() const
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{
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return stringCache.keys();
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}
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QDeclarativePropertyCache::Data *QDeclarativePropertyCache::property(QDeclarativeEngine *engine, QObject *obj,
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const QScriptDeclarativeClass::Identifier &name, Data &local)
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{
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QDeclarativePropertyCache::Data *rv = 0;
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QDeclarativeEnginePrivate *enginePrivate = QDeclarativeEnginePrivate::get(engine);
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QDeclarativePropertyCache *cache = 0;
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QDeclarativeData *ddata = QDeclarativeData::get(obj);
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if (ddata && ddata->propertyCache && ddata->propertyCache->qmlEngine() == engine)
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cache = ddata->propertyCache;
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if (!cache) {
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cache = enginePrivate->cache(obj);
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if (cache && ddata && !ddata->propertyCache) { cache->addref(); ddata->propertyCache = cache; }
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}
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if (cache) {
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rv = cache->property(name);
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} else {
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local = QDeclarativePropertyCache::create(obj->metaObject(), enginePrivate->objectClass->toString(name));
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if (local.isValid())
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rv = &local;
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}
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return rv;
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}
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QDeclarativePropertyCache::Data *QDeclarativePropertyCache::property(QDeclarativeEngine *engine, QObject *obj,
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const QString &name, Data &local)
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{
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QDeclarativePropertyCache::Data *rv = 0;
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if (!engine) {
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local = QDeclarativePropertyCache::create(obj->metaObject(), name);
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if (local.isValid())
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rv = &local;
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} else {
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QDeclarativeEnginePrivate *enginePrivate = QDeclarativeEnginePrivate::get(engine);
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QDeclarativePropertyCache *cache = 0;
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QDeclarativeData *ddata = QDeclarativeData::get(obj);
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if (ddata && ddata->propertyCache && ddata->propertyCache->qmlEngine() == engine)
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cache = ddata->propertyCache;
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if (!cache) {
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cache = enginePrivate->cache(obj);
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if (cache && ddata && !ddata->propertyCache) { cache->addref(); ddata->propertyCache = cache; }
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}
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if (cache) {
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rv = cache->property(name);
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} else {
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local = QDeclarativePropertyCache::create(obj->metaObject(), name);
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if (local.isValid())
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rv = &local;
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}
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}
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return rv;
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}
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QT_END_NAMESPACE
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