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diff --git a/src/declarative/qml/qmldeclarativedata_p.h b/src/declarative/qml/qmldeclarativedata_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLDECLARATIVEDATA_P_H
+#define QMLDECLARATIVEDATA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtScript/qscriptvalue.h>
+#include <private/qobject_p.h>
+#include "qmlguard_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QmlCompiledData;
+class QmlAbstractBinding;
+class QmlContext;
+class QmlPropertyCache;
+class Q_AUTOTEST_EXPORT QmlDeclarativeData : public QDeclarativeData
+{
+public:
+    QmlDeclarativeData(QmlContext *ctxt = 0)
+        : context(ctxt), bindings(0), nextContextObject(0), prevContextObject(0),
+          bindingBitsSize(0), bindingBits(0), outerContext(0), lineNumber(0), 
+          columnNumber(0), deferredComponent(0), deferredIdx(0), attachedProperties(0), 
+          propertyCache(0), guards(0) {}
+
+    virtual void destroyed(QObject *);
+
+    QmlContext *context;
+    QmlAbstractBinding *bindings;
+
+    // Linked list for QmlContext::contextObjects
+    QmlDeclarativeData *nextContextObject;
+    QmlDeclarativeData**prevContextObject;
+
+    int bindingBitsSize;
+    quint32 *bindingBits; 
+    bool hasBindingBit(int) const;
+    void clearBindingBit(int);
+    void setBindingBit(QObject *obj, int);
+
+    QmlContext *outerContext; // Can't this be found from context?
+    ushort lineNumber;
+    ushort columnNumber;
+
+    QmlCompiledData *deferredComponent; // Can't this be found from the context?
+    unsigned int deferredIdx;
+
+    QHash<int, QObject *> *attachedProperties;
+
+    QScriptValue scriptValue;
+    QmlPropertyCache *propertyCache;
+
+    QmlGuard<QObject> *guards;
+
+    static QmlDeclarativeData *get(const QObject *object, bool create = false) {
+        QObjectPrivate *priv = QObjectPrivate::get(const_cast<QObject *>(object));
+        if (priv->declarativeData) {
+            return static_cast<QmlDeclarativeData *>(priv->declarativeData);
+        } else if (create) {
+            priv->declarativeData = new QmlDeclarativeData;
+            return static_cast<QmlDeclarativeData *>(priv->declarativeData);
+        } else {
+            return 0;
+        }
+    }
+};
+
+template<class T>
+void QmlGuard<T>::addGuard()
+{
+    QmlDeclarativeData *data = QmlDeclarativeData::get(o, true);
+    next = data->guards;
+    if (next) reinterpret_cast<QmlGuard<T> *>(next)->prev = &next;
+    data->guards = reinterpret_cast<QmlGuard<QObject> *>(this);
+    prev = &data->guards;
+}
+
+template<class T>
+void QmlGuard<T>::remGuard()
+{
+    if (next) reinterpret_cast<QmlGuard<T> *>(next)->prev = prev;
+    *prev = next;
+    next = 0;
+    prev = 0;
+}
+
+QT_END_NAMESPACE
+
+#endif // QMLDECLARATIVEDATA_P_H