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diff --git a/src/qml/qml/v8/qjsengine.h b/src/qml/qml/v8/qjsengine.h
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+++ b/src/qml/qml/v8/qjsengine.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QJSENGINE_H
+#define QJSENGINE_H
+
+#include <QtCore/qmetatype.h>
+
+#include <QtCore/qvariant.h>
+#include <QtCore/qsharedpointer.h>
+#include <QtCore/qobject.h>
+#include <QtQml/qjsvalue.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+
+class QV8Engine;
+
+template <typename T>
+inline T qjsvalue_cast(const QJSValue &);
+
+class QJSEnginePrivate;
+class Q_QML_EXPORT QJSEngine
+    : public QObject
+{
+    Q_OBJECT
+public:
+#ifdef QT_DEPRECATED
+    enum ContextOwnership {
+        AdoptCurrentContext,
+        CreateNewContext
+    };
+    QT_DEPRECATED explicit QJSEngine(ContextOwnership ownership);
+#endif
+
+    QJSEngine();
+    explicit QJSEngine(QObject *parent);
+    virtual ~QJSEngine();
+
+    QJSValue globalObject() const;
+
+    QJSValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
+
+    QJSValue newObject();
+    QJSValue newArray(uint length = 0);
+
+    QJSValue newQObject(QObject *object);
+
+    template <typename T>
+    inline QJSValue toScriptValue(const T &value)
+    {
+        return create(qMetaTypeId<T>(), &value);
+    }
+    template <typename T>
+    inline T fromScriptValue(const QJSValue &value)
+    {
+        return qjsvalue_cast<T>(value);
+    }
+
+    void collectGarbage();
+
+    QV8Engine *handle() const { return d; }
+
+#ifdef QT_DEPRECATED
+    QT_DEPRECATED bool hasUncaughtException() const;
+    QT_DEPRECATED QJSValue uncaughtException() const;
+    QT_DEPRECATED void clearExceptions();
+#endif
+
+Q_SIGNALS:
+    void signalHandlerException(const QJSValue &exception);
+
+private:
+    QJSValue create(int type, const void *ptr);
+
+    static bool convertV2(const QJSValue &value, int type, void *ptr);
+
+    friend inline bool qjsvalue_cast_helper(const QJSValue &, int, void *);
+
+protected:
+    QJSEngine(QJSEnginePrivate &dd, QObject *parent = 0);
+
+private:
+    QV8Engine *d;
+    Q_DISABLE_COPY(QJSEngine)
+    Q_DECLARE_PRIVATE(QJSEngine)
+    friend class QV8Engine;
+};
+
+inline bool qjsvalue_cast_helper(const QJSValue &value, int type, void *ptr)
+{
+    return QJSEngine::convertV2(value, type, ptr);
+}
+
+template<typename T>
+T qjsvalue_cast(const QJSValue &value)
+{
+    T t;
+    const int id = qMetaTypeId<T>();
+
+    if (qjsvalue_cast_helper(value, id, &t))
+        return t;
+    else if (value.isVariant())
+        return qvariant_cast<T>(value.toVariant());
+
+    return T();
+}
+
+template <>
+inline QVariant qjsvalue_cast<QVariant>(const QJSValue &value)
+{
+    return value.toVariant();
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QJSENGINE_H