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diff --git a/src/qml/qml/v8/qv8jsonwrapper_p.h b/src/qml/qml/v8/qv8jsonwrapper_p.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 QV8JSONWRAPPER_P_H
+#define QV8JSONWRAPPER_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 <QtCore/qglobal.h>
+#include <QtCore/qset.h>
+#include <private/qv8_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QJsonValue;
+class QJsonObject;
+class QJsonArray;
+
+class QV8Engine;
+class QV8JsonWrapper
+{
+public:
+    QV8JsonWrapper();
+    ~QV8JsonWrapper();
+
+    void init(QV8Engine *);
+    void destroy();
+
+    v8::Handle<v8::Value> fromJsonValue(const QJsonValue &value);
+    QJsonValue toJsonValue(v8::Handle<v8::Value> value);
+
+    v8::Local<v8::Object> fromJsonObject(const QJsonObject &object);
+    QJsonObject toJsonObject(v8::Handle<v8::Value> value);
+
+    v8::Local<v8::Array> fromJsonArray(const QJsonArray &array);
+    QJsonArray toJsonArray(v8::Handle<v8::Value> value);
+
+private:
+    QV8Engine *m_engine;
+    QSet<int> m_visitedConversionObjects;
+};
+
+QT_END_NAMESPACE
+
+#endif // QV8JSONWRAPPER_P_H
+