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diff --git a/src/corelib/json/qjsondocument.h b/src/corelib/json/qjsondocument.h
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+++ b/src/corelib/json/qjsondocument.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore 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 QJSONDOCUMENT_H
+#define QJSONDOCUMENT_H
+
+#include <qjsonvalue.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QDebug;
+
+namespace QJsonPrivate {
+    class Parser;
+}
+
+class Q_CORE_EXPORT QJsonDocument
+{
+public:
+#ifdef Q_LITTLE_ENDIAN
+    static const uint BinaryFormatTag = ('q') | ('b' << 8) | ('j' << 16) | ('s' << 24);
+#else
+    static const uint BinaryFormatTag = ('q' << 24) | ('b' << 16) | ('j' << 8) | ('s');
+#endif
+
+    QJsonDocument();
+    explicit QJsonDocument(const QJsonObject &object);
+    explicit QJsonDocument(const QJsonArray &array);
+    ~QJsonDocument();
+
+    QJsonDocument(const QJsonDocument &other);
+    QJsonDocument &operator =(const QJsonDocument &other);
+
+    enum DataValidation {
+        Validate,
+        BypassValidation
+    };
+
+    static QJsonDocument fromRawData(const char *data, int size, DataValidation validation = Validate);
+    const char *rawData(int *size) const;
+
+    static QJsonDocument fromBinaryData(const QByteArray &data, DataValidation validation  = Validate);
+    QByteArray toBinaryData() const;
+
+    static QJsonDocument fromVariant(const QVariant &variant);
+    QVariant toVariant() const;
+
+    static QJsonDocument fromJson(const QByteArray &json);
+    QByteArray toJson() const;
+
+    bool isEmpty() const;
+    bool isArray() const;
+    bool isObject() const;
+
+    QJsonObject object() const;
+    QJsonArray array() const;
+
+    void setObject(const QJsonObject &object);
+    void setArray(const QJsonArray &array);
+
+    bool operator==(const QJsonDocument &other) const;
+    bool operator!=(const QJsonDocument &other) const { return !(*this == other); }
+
+    bool isNull() const;
+
+private:
+    friend class QJsonValue;
+    friend class QJsonPrivate::Data;
+    friend class QJsonPrivate::Parser;
+    friend Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonDocument &);
+
+    QJsonDocument(QJsonPrivate::Data *data);
+
+    QJsonPrivate::Data *d;
+};
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonDocument &);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QJSONDOCUMENT_H