Create a property cache for synthesized metaobjects

1 files changed, 137 insertions, 0 deletions

diff --git a/src/declarative/qml/qmlpropertycache.cpp b/src/declarative/qml/qmlpropertycache.cpp
new file mode 100644
index 0000000..f88b3a3
--- /dev/null
+++ b/src/declarative/qml/qmlpropertycache.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmlpropertycache_p.h"
+#include "qmlengine_p.h"
+
+QmlPropertyCache::QmlPropertyCache()
+{
+}
+
+QmlPropertyCache::~QmlPropertyCache()
+{
+    for (int ii = 0; ii < indexCache.count(); ++ii) 
+        indexCache.at(ii)->release();
+
+    for (StringCache::ConstIterator iter = stringCache.begin(); 
+            iter != stringCache.end(); ++iter)
+        (*iter)->release();
+
+    for (IdentifierCache::ConstIterator iter = identifierCache.begin(); 
+            iter != identifierCache.end(); ++iter)
+        (*iter)->release();
+}
+
+// ### Optimize - check engine for the parent meta object etc.
+QmlPropertyCache *QmlPropertyCache::create(QmlEngine *engine, const QMetaObject *metaObject)
+{
+    Q_ASSERT(engine);
+    Q_ASSERT(metaObject);
+
+    QmlPropertyCache *cache = new QmlPropertyCache;
+
+    QmlEnginePrivate *enginePriv = QmlEnginePrivate::get(engine);
+
+    // ### The properties/methods should probably be spliced on a per-metaobject basis
+    int propCount = metaObject->propertyCount();
+
+    cache->indexCache.resize(propCount);
+    for (int ii = propCount - 1; ii >= 0; --ii) {
+        QMetaProperty p = metaObject->property(ii);
+        QString propName = QLatin1String(p.name());
+
+        QScriptDeclarativeClass::PersistentIdentifier<Data> *data = 
+            enginePriv->objectClass2->createPersistentIdentifier<Data>(propName);
+        data->propType = p.userType();
+        data->coreIndex = ii;
+        data->name = propName;
+
+        cache->indexCache[ii] = data;
+
+        if (cache->stringCache.contains(propName))
+            continue;
+
+        cache->stringCache.insert(propName, data);
+        cache->identifierCache.insert(data->identifier, data);
+        data->addref();
+        data->addref();
+    }
+
+    int methodCount = metaObject->methodCount();
+    for (int ii = methodCount - 1; ii >= 0; --ii) {
+        QMetaMethod m = metaObject->method(ii);
+        QString methodName = QLatin1String(m.signature());
+
+        int parenIdx = methodName.indexOf(QLatin1Char('('));
+        Q_ASSERT(parenIdx != -1);
+        methodName = methodName.left(parenIdx);
+
+        if (cache->stringCache.contains(methodName))
+            continue;
+
+        QScriptDeclarativeClass::PersistentIdentifier<Data> *data = 
+            enginePriv->objectClass2->createPersistentIdentifier<Data>(methodName);
+        cache->stringCache.insert(methodName, data);
+        cache->identifierCache.insert(data->identifier, data);
+        data->addref();
+        data->addref();
+
+        data->isFunction = true;
+    }
+
+    return cache;
+}
+
+QmlPropertyCache::Data *
+QmlPropertyCache::property(int index) const
+{
+    if (index < 0 || index >= indexCache.count())
+        return 0;
+
+    return indexCache.at(index);
+}
+
+QmlPropertyCache::Data *
+QmlPropertyCache::property(const QString &str) const
+{
+    return stringCache.value(str);
+}
+