| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of Qt Quick 3D. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QTSSGGLOBAL_P_H |
| #define QTSSGGLOBAL_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 |
| |
| #ifndef QT_STATIC |
| #if defined(QT_BUILD_QUICK3DUTILS_LIB) |
| #define Q_QUICK3DUTILS_EXPORT Q_DECL_EXPORT |
| #else |
| #define Q_QUICK3DUTILS_EXPORT Q_DECL_IMPORT |
| #endif |
| #else |
| #define Q_QUICK3DUTILS_EXPORT |
| #endif |
| |
| #define Q_QUICK3DUTILS_PRIVATE_EXPORT Q_QUICK3DUTILS_EXPORT |
| |
| template<typename T> |
| class QSSGRef |
| { |
| T *d; |
| |
| public: |
| T *data() const { return d; } |
| T *get() const { return d; } |
| T *take() |
| { |
| T *t = d; |
| d = nullptr; |
| return t; |
| } |
| bool isNull() const { return !d; } |
| operator bool() const { return d; } |
| bool operator!() const { return !d; } |
| T &operator*() const { return *d; } |
| T *operator->() const { return d; } |
| |
| // constructors |
| constexpr QSSGRef() : d(nullptr) {} |
| constexpr QSSGRef(std::nullptr_t) : d(nullptr) {} |
| |
| QSSGRef(T *ptr) : d(ptr) |
| { |
| if (d) |
| d->ref.ref(); |
| } |
| template<typename X> |
| QSSGRef(X *ptr) : d(ptr) |
| { |
| if (d) |
| d->ref.ref(); |
| } |
| QSSGRef(const QSSGRef<T> &other) : d(other.d) |
| { |
| if (d) |
| d->ref.ref(); |
| } |
| template<typename X> |
| QSSGRef(const QSSGRef<X> &other) : d(other.get()) |
| { |
| if (d) |
| d->ref.ref(); |
| } |
| |
| QSSGRef(QSSGRef<T> &&other) : d(other.take()) {} |
| template<typename X> |
| QSSGRef(QSSGRef<X> &&other) : d(other.take()) |
| { |
| } |
| |
| ~QSSGRef() |
| { |
| if (d && !d->ref.deref()) |
| delete d; |
| } |
| |
| template<typename X> |
| QSSGRef<T> &operator=(const QSSGRef<X> &other) |
| { |
| if (d != other.get()) { |
| if (d && !d->ref.deref()) |
| delete d; |
| d = other.get(); |
| if (d) |
| d->ref.ref(); |
| } |
| return *this; |
| } |
| template<typename X> |
| QSSGRef<T> &operator=(QSSGRef<X> &&other) |
| { |
| clear(); |
| d = other.take(); |
| return *this; |
| } |
| QSSGRef<T> &operator=(const QSSGRef<T> &other) |
| { |
| if (d != other.get()) { |
| if (d && !d->ref.deref()) |
| delete d; |
| d = other.get(); |
| if (d) |
| d->ref.ref(); |
| } |
| return *this; |
| } |
| QSSGRef<T> &operator=(QSSGRef<T> &&other) |
| { |
| qSwap(d, other.d); |
| return *this; |
| } |
| |
| void swap(QSSGRef<T> &other) { qSwap(d, other.d); } |
| |
| void clear() |
| { |
| if (d && !d->ref.deref()) |
| delete d; |
| d = nullptr; |
| } |
| }; |
| |
| template<class T, class X> |
| bool operator==(const QSSGRef<T> &ptr1, const QSSGRef<X> &ptr2) |
| { |
| return ptr1.get() == ptr2.get(); |
| } |
| template<class T, class X> |
| bool operator!=(const QSSGRef<T> &ptr1, const QSSGRef<X> &ptr2) |
| { |
| return ptr1.get() != ptr2.get(); |
| } |
| template<class T, class X> |
| bool operator==(const QSSGRef<T> &ptr1, const X *ptr2) |
| { |
| return ptr1.get() == ptr2; |
| } |
| template<class T, class X> |
| bool operator!=(const QSSGRef<T> &ptr1, const X *ptr2) |
| { |
| return ptr1.get() != ptr2; |
| } |
| template<class T, class X> |
| bool operator==(const T *ptr1, const QSSGRef<X> &ptr2) |
| { |
| return ptr1 == ptr2.get(); |
| } |
| template<class T, class X> |
| bool operator!=(const T *ptr1, const QSSGRef<X> &ptr2) |
| { |
| return ptr1 != ptr2.get(); |
| } |
| template<class T> |
| bool operator==(const QSSGRef<T> &lhs, std::nullptr_t) |
| { |
| return !lhs.get(); |
| } |
| template<class T> |
| bool operator!=(const QSSGRef<T> &lhs, std::nullptr_t) |
| { |
| return lhs.get(); |
| } |
| template<class T> |
| bool operator==(std::nullptr_t, const QSSGRef<T> &rhs) |
| { |
| return !rhs.get(); |
| } |
| template<class T> |
| bool operator!=(std::nullptr_t, const QSSGRef<T> &rhs) |
| { |
| return rhs.get(); |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QTSSGGLOBAL_P_H |