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diff --git a/qt/qdbustype_p.h b/qt/qdbustype_p.h
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+/* -*- C++ -*-
+ *
+ * Copyright (C) 2005 Thiago Macieira <thiago@kde.org>
+ * Copyright (C) 2006 Trolltech AS. All rights reserved.
+ *    Author: Thiago Macieira <thiago.macieira@trolltech.com>
+ *
+ * Licensed under the Academic Free License version 2.1
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef QDBUSTYPE_H
+#define QDBUSTYPE_H
+
+#include <QtCore/qvariant.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qshareddata.h>
+#include <QtCore/qlist.h>
+#include "qdbusmacros.h"
+#include <dbus/dbus.h>
+
+// forward declaration
+class QDBusTypeList;
+
+class QDBusTypePrivate;
+class QDBUS_EXPORT QDBusType
+{
+public:
+    QDBusType();
+    explicit QDBusType(int type);
+    explicit QDBusType(QVariant::Type type);
+    explicit QDBusType(const char* signature);
+    explicit QDBusType(DBusSignatureIter*);
+    explicit QDBusType(const QString& str);
+    explicit QDBusType(const QByteArray& str);
+    QDBusType(const QDBusType& other);
+
+    ~QDBusType();
+
+    QDBusType& operator=(const QDBusType& other);
+
+    int qvariantType() const;
+
+    int dbusType() const;
+    QByteArray dbusSignature() const;
+    bool isValid() const;
+    bool isBasic() const;
+    bool isContainer() const;
+
+    QDBusTypeList subTypes() const;
+
+    bool isArray() const;
+    QDBusType arrayElement() const;
+
+    bool isMap() const;
+    QDBusType mapKey() const;
+    QDBusType mapValue() const;
+
+    bool operator==(const QDBusType& other) const;
+    inline bool operator!=(const QDBusType &other) const
+    { return !(*this == other); }
+
+    static int qvariantType(int type);
+    static int qvariantType(const char* signature);
+    static int dbusType(QVariant::Type);
+    static const char* dbusSignature(QVariant::Type);
+
+    enum VariantListMode {
+        ListIsArray,
+        ListIsStruct
+    };
+    static QDBusType guessFromVariant(const QVariant &variant, VariantListMode = ListIsArray);
+
+private:
+    QSharedDataPointer<QDBusTypePrivate> d;
+};
+
+class QDBUS_EXPORT QDBusTypeList: public QList<QDBusType>
+{
+public:
+    inline QDBusTypeList() { }
+    inline QDBusTypeList(const QDBusTypeList& other)
+        : QList<QDBusType>(other)
+        { }
+    inline QDBusTypeList(const QList<QDBusType>& other)
+        : QList<QDBusType>(other)
+        { }
+    QDBusTypeList(const char* signature);
+    QDBusTypeList(DBusSignatureIter*);
+
+    bool canBeMap() const;
+
+    QByteArray dbusSignature() const;
+};
+
+#endif // QDBUSTYPE_H