diff options
Diffstat (limited to 'src/qml/qml/ftw/qflagpointer_p.h')
-rw-r--r-- | src/qml/qml/ftw/qflagpointer_p.h | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/src/qml/qml/ftw/qflagpointer_p.h b/src/qml/qml/ftw/qflagpointer_p.h new file mode 100644 index 0000000000..a4b20d9e2a --- /dev/null +++ b/src/qml/qml/ftw/qflagpointer_p.h @@ -0,0 +1,338 @@ +/**************************************************************************** +** +** 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 |