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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 QFLAGPOINTER_P_H
+#define QFLAGPOINTER_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>
+
+QT_BEGIN_NAMESPACE
+
+template<typename T>
+class QFlagPointer {
+public:
+ inline QFlagPointer();
+ inline QFlagPointer(T *);
+ inline QFlagPointer(const QFlagPointer<T> &o);
+
+ inline bool isNull() const;
+
+ inline bool flag() const;
+ inline void setFlag();
+ inline void clearFlag();
+ inline void setFlagValue(bool);
+
+ inline bool flag2() const;
+ inline void setFlag2();
+ inline void clearFlag2();
+ inline void setFlag2Value(bool);
+
+ inline QFlagPointer<T> &operator=(const QFlagPointer &o);
+ inline QFlagPointer<T> &operator=(T *);
+
+ inline T *operator->() const;
+ inline T *operator*() const;
+
+private:
+ quintptr ptr_value;
+
+ static const quintptr FlagBit = 0x1;
+ static const quintptr Flag2Bit = 0x2;
+ static const quintptr FlagsMask = FlagBit | Flag2Bit;
+};
+
+template<typename T, typename T2>
+class QBiPointer {
+public:
+ inline QBiPointer();
+ inline QBiPointer(T *);
+ inline QBiPointer(T2 *);
+ inline QBiPointer(const QBiPointer<T, T2> &o);
+
+ inline bool isNull() const;
+ inline bool isT1() const;
+ inline bool isT2() const;
+
+ inline bool flag() const;
+ inline void setFlag();
+ inline void clearFlag();
+ inline void setFlagValue(bool);
+
+ inline QBiPointer<T, T2> &operator=(const QBiPointer<T, T2> &o);
+ inline QBiPointer<T, T2> &operator=(T *);
+ inline QBiPointer<T, T2> &operator=(T2 *);
+
+ inline T *asT1() const;
+ inline T2 *asT2() const;
+
+private:
+ quintptr ptr_value;
+
+ static const quintptr FlagBit = 0x1;
+ static const quintptr Flag2Bit = 0x2;
+ static const quintptr FlagsMask = FlagBit | Flag2Bit;
+};
+
+template<typename T>
+QFlagPointer<T>::QFlagPointer()
+: ptr_value(0)
+{
+}
+
+template<typename T>
+QFlagPointer<T>::QFlagPointer(T *v)
+: ptr_value(quintptr(v))
+{
+ Q_ASSERT((ptr_value & FlagsMask) == 0);
+}
+
+template<typename T>
+QFlagPointer<T>::QFlagPointer(const QFlagPointer<T> &o)
+: ptr_value(o.ptr_value)
+{
+}
+
+template<typename T>
+bool QFlagPointer<T>::isNull() const
+{
+ return 0 == (ptr_value & (~FlagsMask));
+}
+
+template<typename T>
+bool QFlagPointer<T>::flag() const
+{
+ return ptr_value & FlagBit;
+}
+
+template<typename T>
+void QFlagPointer<T>::setFlag()
+{
+ ptr_value |= FlagBit;
+}
+
+template<typename T>
+void QFlagPointer<T>::clearFlag()
+{
+ ptr_value &= ~FlagBit;
+}
+
+template<typename T>
+void QFlagPointer<T>::setFlagValue(bool v)
+{
+ if (v) setFlag();
+ else clearFlag();
+}
+
+template<typename T>
+bool QFlagPointer<T>::flag2() const
+{
+ return ptr_value & Flag2Bit;
+}
+
+template<typename T>
+void QFlagPointer<T>::setFlag2()
+{
+ ptr_value|= Flag2Bit;
+}
+
+template<typename T>
+void QFlagPointer<T>::clearFlag2()
+{
+ ptr_value &= ~Flag2Bit;
+}
+
+template<typename T>
+void QFlagPointer<T>::setFlag2Value(bool v)
+{
+ if (v) setFlag2();
+ else clearFlag2();
+}
+
+template<typename T>
+QFlagPointer<T> &QFlagPointer<T>::operator=(const QFlagPointer &o)
+{
+ ptr_value = o.ptr_value;
+ return *this;
+}
+
+template<typename T>
+QFlagPointer<T> &QFlagPointer<T>::operator=(T *o)
+{
+ Q_ASSERT((quintptr(o) & FlagsMask) == 0);
+
+ ptr_value = quintptr(o) | (ptr_value & FlagsMask);
+ return *this;
+}
+
+template<typename T>
+T *QFlagPointer<T>::operator->() const
+{
+ return (T *)(ptr_value & ~FlagsMask);
+}
+
+template<typename T>
+T *QFlagPointer<T>::operator*() const
+{
+ return (T *)(ptr_value & ~FlagsMask);
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2>::QBiPointer()
+: ptr_value(0)
+{
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2>::QBiPointer(T *v)
+: ptr_value(quintptr(v))
+{
+ Q_ASSERT((quintptr(v) & FlagsMask) == 0);
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2>::QBiPointer(T2 *v)
+: ptr_value(quintptr(v) | Flag2Bit)
+{
+ Q_ASSERT((quintptr(v) & FlagsMask) == 0);
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2>::QBiPointer(const QBiPointer<T, T2> &o)
+: ptr_value(o.ptr_value)
+{
+}
+
+template<typename T, typename T2>
+bool QBiPointer<T, T2>::isNull() const
+{
+ return 0 == (ptr_value & (~FlagsMask));
+}
+
+template<typename T, typename T2>
+bool QBiPointer<T, T2>::isT1() const
+{
+ return !(ptr_value & Flag2Bit);
+}
+
+template<typename T, typename T2>
+bool QBiPointer<T, T2>::isT2() const
+{
+ return ptr_value & Flag2Bit;
+}
+
+template<typename T, typename T2>
+bool QBiPointer<T, T2>::flag() const
+{
+ return ptr_value & FlagBit;
+}
+
+template<typename T, typename T2>
+void QBiPointer<T, T2>::setFlag()
+{
+ ptr_value |= FlagBit;
+}
+
+template<typename T, typename T2>
+void QBiPointer<T, T2>::clearFlag()
+{
+ ptr_value &= ~FlagBit;
+}
+
+template<typename T, typename T2>
+void QBiPointer<T, T2>::setFlagValue(bool v)
+{
+ if (v) setFlag();
+ else clearFlag();
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2> &QBiPointer<T, T2>::operator=(const QBiPointer<T, T2> &o)
+{
+ ptr_value = o.ptr_value;
+ return *this;
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2> &QBiPointer<T, T2>::operator=(T *o)
+{
+ Q_ASSERT((quintptr(o) & FlagsMask) == 0);
+
+ ptr_value = quintptr(o) | (ptr_value & FlagBit);
+ return *this;
+}
+
+template<typename T, typename T2>
+QBiPointer<T, T2> &QBiPointer<T, T2>::operator=(T2 *o)
+{
+ Q_ASSERT((quintptr(o) & FlagsMask) == 0);
+
+ ptr_value = quintptr(o) | (ptr_value & FlagBit) | Flag2Bit;
+ return *this;
+}
+
+template<typename T, typename T2>
+T *QBiPointer<T, T2>::asT1() const
+{
+ Q_ASSERT(isT1());
+ return (T *)(ptr_value & ~FlagsMask);
+}
+
+template<typename T, typename T2>
+T2 *QBiPointer<T, T2>::asT2() const
+{
+ Q_ASSERT(isT2());
+ return (T2 *)(ptr_value & ~FlagsMask);
+}
+
+QT_END_NAMESPACE
+
+#endif // QFLAGPOINTER_P_H