| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL3$ |
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| ** |
| ** GNU General Public License Usage |
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| ****************************************************************************/ |
| |
| #ifndef QQUICKDEFERREDPOINTER_P_P_H |
| #define QQUICKDEFERREDPOINTER_P_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 QQuickDeferredPointer |
| { |
| public: |
| inline QQuickDeferredPointer(); |
| inline QQuickDeferredPointer(T *); |
| inline QQuickDeferredPointer(const QQuickDeferredPointer<T> &o); |
| |
| inline bool isNull() const; |
| |
| inline bool wasExecuted() const; |
| inline void setExecuted(); |
| |
| inline bool isExecuting() const; |
| inline void setExecuting(bool); |
| |
| inline operator T*() const; |
| inline operator bool() const; |
| |
| inline T *data() const; |
| inline T *operator*() const; |
| inline T *operator->() const; |
| |
| inline QQuickDeferredPointer<T> &operator=(T *); |
| inline QQuickDeferredPointer<T> &operator=(const QQuickDeferredPointer &o); |
| |
| private: |
| quintptr ptr_value = 0; |
| |
| static const quintptr WasExecutedBit = 0x1; |
| static const quintptr IsExecutingBit = 0x2; |
| static const quintptr FlagsMask = WasExecutedBit | IsExecutingBit; |
| }; |
| |
| template<typename T> |
| QQuickDeferredPointer<T>::QQuickDeferredPointer() |
| { |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T>::QQuickDeferredPointer(T *v) |
| : ptr_value(quintptr(v)) |
| { |
| Q_ASSERT((ptr_value & FlagsMask) == 0); |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T>::QQuickDeferredPointer(const QQuickDeferredPointer<T> &o) |
| : ptr_value(o.ptr_value) |
| { |
| } |
| |
| template<typename T> |
| bool QQuickDeferredPointer<T>::isNull() const |
| { |
| return 0 == (ptr_value & (~FlagsMask)); |
| } |
| |
| template<typename T> |
| bool QQuickDeferredPointer<T>::wasExecuted() const |
| { |
| return ptr_value & WasExecutedBit; |
| } |
| |
| template<typename T> |
| void QQuickDeferredPointer<T>::setExecuted() |
| { |
| ptr_value |= WasExecutedBit; |
| } |
| |
| template<typename T> |
| bool QQuickDeferredPointer<T>::isExecuting() const |
| { |
| return ptr_value & IsExecutingBit; |
| } |
| |
| template<typename T> |
| void QQuickDeferredPointer<T>::setExecuting(bool b) |
| { |
| if (b) |
| ptr_value |= IsExecutingBit; |
| else |
| ptr_value &= ~IsExecutingBit; |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T>::operator T*() const |
| { |
| return data(); |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T>::operator bool() const |
| { |
| return !isNull(); |
| } |
| |
| template<typename T> |
| T *QQuickDeferredPointer<T>::data() const |
| { |
| return (T *)(ptr_value & ~FlagsMask); |
| } |
| |
| template<typename T> |
| T *QQuickDeferredPointer<T>::operator*() const |
| { |
| return (T *)(ptr_value & ~FlagsMask); |
| } |
| |
| template<typename T> |
| T *QQuickDeferredPointer<T>::operator->() const |
| { |
| return (T *)(ptr_value & ~FlagsMask); |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T> &QQuickDeferredPointer<T>::operator=(T *o) |
| { |
| Q_ASSERT((quintptr(o) & FlagsMask) == 0); |
| |
| ptr_value = quintptr(o) | (ptr_value & FlagsMask); |
| return *this; |
| } |
| |
| template<typename T> |
| QQuickDeferredPointer<T> &QQuickDeferredPointer<T>::operator=(const QQuickDeferredPointer &o) |
| { |
| ptr_value = o.ptr_value; |
| return *this; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QQUICKDEFERREDPOINTER_P_P_H |