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Diffstat (limited to 'qtinterface/qt4/Qt/qsharedpointer_impl.h')
| -rw-r--r-- | qtinterface/qt4/Qt/qsharedpointer_impl.h | 805 |
1 files changed, 0 insertions, 805 deletions
diff --git a/qtinterface/qt4/Qt/qsharedpointer_impl.h b/qtinterface/qt4/Qt/qsharedpointer_impl.h deleted file mode 100644 index e25e0c1..0000000 --- a/qtinterface/qt4/Qt/qsharedpointer_impl.h +++ /dev/null @@ -1,805 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation ([email protected]) -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial Usage -** Licensees holding valid Qt Commercial licenses may use this file in -** accordance with the Qt Commercial License Agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Nokia. -** -** GNU Lesser General Public License Usage -** Alternatively, 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. -** -** If you have questions regarding the use of this file, please contact -** Nokia at [email protected]. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef Q_QDOC - -#ifndef QSHAREDPOINTER_H -#error Do not include qsharedpointer_impl.h directly -#endif -#if 0 -#pragma qt_sync_stop_processing -#endif - -#include <new> -#include <QtCore/qatomic.h> -#include <QtCore/qobject.h> // for qobject_cast - -QT_BEGIN_HEADER - -QT_BEGIN_NAMESPACE - -QT_MODULE(Core) - -// Macro QSHAREDPOINTER_VERIFY_AUTO_CAST -// generates a compiler error if the following construct isn't valid: -// T *ptr1; -// X *ptr2 = ptr1; -// -#ifdef QT_NO_DEBUG -# define QSHAREDPOINTER_VERIFY_AUTO_CAST(T, X) qt_noop() -#else - -template<typename T> inline void qt_sharedpointer_cast_check(T *) { } -# define QSHAREDPOINTER_VERIFY_AUTO_CAST(T, X) \ - qt_sharedpointer_cast_check<T>(static_cast<X *>(0)) -#endif - -// -// forward declarations -// -template <class T> class QWeakPointer; -template <class T> class QSharedPointer; - -template <class X, class T> -QSharedPointer<X> qSharedPointerCast(const QSharedPointer<T> &ptr); -template <class X, class T> -QSharedPointer<X> qSharedPointerDynamicCast(const QSharedPointer<T> &ptr); -template <class X, class T> -QSharedPointer<X> qSharedPointerConstCast(const QSharedPointer<T> &ptr); - -#ifndef QT_NO_QOBJECT -template <class X, class T> -QSharedPointer<X> qSharedPointerObjectCast(const QSharedPointer<T> &ptr); -#endif - -namespace QtSharedPointer { - template <class T> class InternalRefCount; - template <class T> class ExternalRefCount; - - template <class X, class Y> QSharedPointer<X> copyAndSetPointer(X * ptr, const QSharedPointer<Y> &src); - - // used in debug mode to verify the reuse of pointers - Q_CORE_EXPORT void internalSafetyCheckAdd2(const void *, const volatile void *); - Q_CORE_EXPORT void internalSafetyCheckRemove2(const void *); - - template <class T, typename Klass, typename RetVal> - inline void executeDeleter(T *t, RetVal (Klass:: *memberDeleter)()) - { (t->*memberDeleter)(); } - template <class T, typename Deleter> - inline void executeDeleter(T *t, Deleter d) - { d(t); } - template <class T> inline void normalDeleter(T *t) { delete t; } - - // this uses partial template specialization - // the only compilers that didn't support this were MSVC 6.0 and 2002 - template <class T> struct RemovePointer; - template <class T> struct RemovePointer<T *> { typedef T Type; }; - template <class T> struct RemovePointer<QSharedPointer<T> > { typedef T Type; }; - template <class T> struct RemovePointer<QWeakPointer<T> > { typedef T Type; }; - - // This class provides the basic functionality of a pointer wrapper. - // Its existence is mostly legacy, since originally QSharedPointer - // could also be used for internally-refcounted objects. - template <class T> - class Basic - { -#ifndef Q_CC_NOKIAX86 - typedef T *Basic:: *RestrictedBool; -#endif - public: - typedef T Type; - typedef T element_type; - typedef T value_type; - typedef value_type *pointer; - typedef const value_type *const_pointer; - typedef value_type &reference; - typedef const value_type &const_reference; - typedef ptrdiff_t difference_type; - - inline T *data() const { return value; } - inline bool isNull() const { return !data(); } -#ifndef Q_CC_NOKIAX86 - inline operator RestrictedBool() const { return isNull() ? 0 : &Basic::value; } -#else - inline operator bool() const { return isNull() ? 0 : &Basic::value; } -#endif - inline bool operator !() const { return isNull(); } - inline T &operator*() const { return *data(); } - inline T *operator->() const { return data(); } - - protected: - inline Basic(T *ptr = 0) : value(ptr) { } - inline Basic(Qt::Initialization) { } - // ~Basic(); - - inline void internalConstruct(T *ptr) - { - value = ptr; - } - -#if defined(Q_NO_TEMPLATE_FRIENDS) - public: -#else - template <class X> friend class QWeakPointer; -#endif - - Type *value; - }; - - // This class is the d-pointer of QSharedPointer and QWeakPointer. - // - // It is a reference-counted reference counter. "strongref" is the inner - // reference counter, and it tracks the lifetime of the pointer itself. - // "weakref" is the outer reference counter and it tracks the lifetime of - // the ExternalRefCountData object. - struct ExternalRefCountData - { - QBasicAtomicInt weakref; - QBasicAtomicInt strongref; - - inline ExternalRefCountData() - { - strongref = 1; - weakref = 1; - } - inline ExternalRefCountData(Qt::Initialization) { } - virtual inline ~ExternalRefCountData() { Q_ASSERT(!weakref); Q_ASSERT(strongref <= 0); } - - // overridden by derived classes - // returns false to indicate caller should delete the pointer - // returns true in case it has already done so - virtual inline bool destroy() { return false; } - -#ifndef QT_NO_QOBJECT - Q_CORE_EXPORT static ExternalRefCountData *getAndRef(const QObject *); - Q_CORE_EXPORT void setQObjectShared(const QObject *, bool enable); -#endif - inline void setQObjectShared(...) { } - }; - // sizeof(ExternalRefCount) = 12 (32-bit) / 16 (64-bit) - - // This class extends ExternalRefCountData with a pointer - // to a function, which is called by the destroy() function. - struct ExternalRefCountWithDestroyFn: public ExternalRefCountData - { - typedef void (*DestroyerFn)(ExternalRefCountData *); - DestroyerFn destroyer; - - inline ExternalRefCountWithDestroyFn(DestroyerFn d) - : destroyer(d) - { } - - inline bool destroy() { destroyer(this); return true; } - inline void operator delete(void *ptr) { ::operator delete(ptr); } - }; - // sizeof(ExternalRefCountWithDestroyFn) = 16 (32-bit) / 24 (64-bit) - - // This class extends ExternalRefCountWithDestroyFn and implements - // the static function that deletes the object. The pointer and the - // custom deleter are kept in the "extra" member. - template <class T, typename Deleter> - struct ExternalRefCountWithCustomDeleter: public ExternalRefCountWithDestroyFn - { - typedef ExternalRefCountWithCustomDeleter Self; - typedef ExternalRefCountWithDestroyFn BaseClass; - - struct CustomDeleter - { - Deleter deleter; - T *ptr; - - inline CustomDeleter(T *p, Deleter d) : deleter(d), ptr(p) {} - }; - CustomDeleter extra; - // sizeof(CustomDeleter) = sizeof(Deleter) + sizeof(void*) - // for Deleter = function pointer: 8 (32-bit) / 16 (64-bit) - // for Deleter = PMF: 12 (32-bit) / 24 (64-bit) (GCC) - - static inline void deleter(ExternalRefCountData *self) - { - Self *realself = static_cast<Self *>(self); - executeDeleter(realself->extra.ptr, realself->extra.deleter); - - // delete the deleter too - realself->extra.~CustomDeleter(); - } - static void safetyCheckDeleter(ExternalRefCountData *self) - { - internalSafetyCheckRemove2(self); - deleter(self); - } - - static inline Self *create(T *ptr, Deleter userDeleter) - { -# ifdef QT_SHAREDPOINTER_TRACK_POINTERS - DestroyerFn destroy = &safetyCheckDeleter; -# else - DestroyerFn destroy = &deleter; -# endif - Self *d = static_cast<Self *>(::operator new(sizeof(Self))); - - // initialize the two sub-objects - new (&d->extra) CustomDeleter(ptr, userDeleter); - new (d) BaseClass(destroy); // can't throw - - return d; - } - private: - // prevent construction and the emission of virtual symbols - ExternalRefCountWithCustomDeleter(); - ~ExternalRefCountWithCustomDeleter(); - }; - - // This class extends ExternalRefCountWithDestroyFn and adds a "T" - // member. That way, when the create() function is called, we allocate - // memory for both QSharedPointer's d-pointer and the actual object being - // tracked. - template <class T> - struct ExternalRefCountWithContiguousData: public ExternalRefCountWithDestroyFn - { - typedef ExternalRefCountWithDestroyFn Parent; - T data; - - static void deleter(ExternalRefCountData *self) - { - ExternalRefCountWithContiguousData *that = - static_cast<ExternalRefCountWithContiguousData *>(self); - that->data.~T(); - } - static void safetyCheckDeleter(ExternalRefCountData *self) - { - internalSafetyCheckRemove2(self); - deleter(self); - } - - static inline ExternalRefCountData *create(T **ptr) - { -# ifdef QT_SHAREDPOINTER_TRACK_POINTERS - DestroyerFn destroy = &safetyCheckDeleter; -# else - DestroyerFn destroy = &deleter; -# endif - ExternalRefCountWithContiguousData *d = - static_cast<ExternalRefCountWithContiguousData *>(::operator new(sizeof(ExternalRefCountWithContiguousData))); - - // initialize the d-pointer sub-object - // leave d->data uninitialized - new (d) Parent(destroy); // can't throw - - *ptr = &d->data; - return d; - } - - private: - // prevent construction and the emission of virtual symbols - ExternalRefCountWithContiguousData(); - ~ExternalRefCountWithContiguousData(); - }; - - // This is the main body of QSharedPointer. It implements the - // external reference counting functionality. - template <class T> - class ExternalRefCount: public Basic<T> - { - protected: - typedef ExternalRefCountData Data; - - inline void ref() const { d->weakref.ref(); d->strongref.ref(); } - inline bool deref() - { - if (!d->strongref.deref()) { - internalDestroy(); - } - return d->weakref.deref(); - } - - inline void internalConstruct(T *ptr) - { -#ifdef QT_SHAREDPOINTER_TRACK_POINTERS - internalConstruct<void (*)(T *)>(ptr, normalDeleter); -#else - if (ptr) - d = new Data; - else - d = 0; - internalFinishConstruction(ptr); -#endif - } - - template <typename Deleter> - inline void internalConstruct(T *ptr, Deleter deleter) - { - if (ptr) - d = ExternalRefCountWithCustomDeleter<T, Deleter>::create(ptr, deleter); - else - d = 0; - internalFinishConstruction(ptr); - } - - inline void internalCreate() - { - T *ptr; - d = ExternalRefCountWithContiguousData<T>::create(&ptr); - Basic<T>::internalConstruct(ptr); - } - - inline void internalFinishConstruction(T *ptr) - { - Basic<T>::internalConstruct(ptr); - if (ptr) d->setQObjectShared(ptr, true); -#ifdef QT_SHAREDPOINTER_TRACK_POINTERS - if (ptr) internalSafetyCheckAdd2(d, ptr); -#endif - } - - inline ExternalRefCount() : d(0) { } - inline ExternalRefCount(Qt::Initialization i) : Basic<T>(i) { } - inline ExternalRefCount(const ExternalRefCount<T> &other) : Basic<T>(other), d(other.d) - { if (d) ref(); } - template <class X> - inline ExternalRefCount(const ExternalRefCount<X> &other) : Basic<T>(other.value), d(other.d) - { if (d) ref(); } - inline ~ExternalRefCount() { if (d && !deref()) delete d; } - - template <class X> - inline void internalCopy(const ExternalRefCount<X> &other) - { - internalSet(other.d, other.data()); - } - - inline void internalDestroy() - { - if (!d->destroy()) - delete this->value; - } - - inline void internalSwap(ExternalRefCount &other) - { - qSwap(d, other.d); - qSwap(this->value, other.value); - } - -#if defined(Q_NO_TEMPLATE_FRIENDS) - public: -#else - template <class X> friend class ExternalRefCount; - template <class X> friend class QWeakPointer; - template <class X, class Y> friend QSharedPointer<X> copyAndSetPointer(X * ptr, const QSharedPointer<Y> &src); -#endif - - inline void internalSet(Data *o, T *actual) - { - if (o) { - // increase the strongref, but never up from zero - // or less (-1 is used by QWeakPointer on untracked QObject) - register int tmp = o->strongref; - while (tmp > 0) { - // try to increment from "tmp" to "tmp + 1" - if (o->strongref.testAndSetRelaxed(tmp, tmp + 1)) - break; // succeeded - tmp = o->strongref; // failed, try again - } - - if (tmp > 0) - o->weakref.ref(); - else - o = 0; - } - if (d && !deref()) - delete d; - d = o; - this->value = d && d->strongref ? actual : 0; - } - - Data *d; - - private: - template<class X> ExternalRefCount(const InternalRefCount<X> &); - }; -} // namespace QtSharedPointer - -template <class T> -class QSharedPointer: public QtSharedPointer::ExternalRefCount<T> -{ - typedef typename QtSharedPointer::ExternalRefCount<T> BaseClass; -public: - inline QSharedPointer() { } - // inline ~QSharedPointer() { } - - inline explicit QSharedPointer(T *ptr) : BaseClass(Qt::Uninitialized) - { BaseClass::internalConstruct(ptr); } - - template <typename Deleter> - inline QSharedPointer(T *ptr, Deleter d) { BaseClass::internalConstruct(ptr, d); } - - inline QSharedPointer(const QSharedPointer<T> &other) : BaseClass(other) { } - inline QSharedPointer<T> &operator=(const QSharedPointer<T> &other) - { - BaseClass::internalCopy(other); - return *this; - } - - template <class X> - inline QSharedPointer(const QSharedPointer<X> &other) : BaseClass(other) - { } - - template <class X> - inline QSharedPointer<T> &operator=(const QSharedPointer<X> &other) - { - QSHAREDPOINTER_VERIFY_AUTO_CAST(T, X); // if you get an error in this line, the cast is invalid - BaseClass::internalCopy(other); - return *this; - } - - template <class X> - inline QSharedPointer(const QWeakPointer<X> &other) : BaseClass(Qt::Uninitialized) - { this->d = 0; *this = other; } - - template <class X> - inline QSharedPointer<T> &operator=(const QWeakPointer<X> &other) - { BaseClass::internalSet(other.d, other.value); return *this; } - - inline void swap(QSharedPointer &other) - { QSharedPointer<T>::internalSwap(other); } - - template <class X> - QSharedPointer<X> staticCast() const - { - return qSharedPointerCast<X, T>(*this); - } - - template <class X> - QSharedPointer<X> dynamicCast() const - { - return qSharedPointerDynamicCast<X, T>(*this); - } - - template <class X> - QSharedPointer<X> constCast() const - { - return qSharedPointerConstCast<X, T>(*this); - } - -#ifndef QT_NO_QOBJECT - template <class X> - QSharedPointer<X> objectCast() const - { - return qSharedPointerObjectCast<X, T>(*this); - } -#endif - - inline void clear() { *this = QSharedPointer<T>(); } - - QWeakPointer<T> toWeakRef() const; - -protected: - inline explicit QSharedPointer(Qt::Initialization i) : BaseClass(i) {} - -public: - static inline QSharedPointer<T> create() - { - QSharedPointer<T> result(Qt::Uninitialized); - result.internalCreate(); - - // now initialize the data - new (result.data()) T(); - result.internalFinishConstruction(result.data()); - return result; - } -}; - -template <class T> -class QWeakPointer -{ -#ifndef Q_CC_NOKIAX86 - typedef T *QWeakPointer:: *RestrictedBool; -#endif - typedef QtSharedPointer::ExternalRefCountData Data; - -public: - typedef T element_type; - typedef T value_type; - typedef value_type *pointer; - typedef const value_type *const_pointer; - typedef value_type &reference; - typedef const value_type &const_reference; - typedef ptrdiff_t difference_type; - - inline bool isNull() const { return d == 0 || d->strongref == 0 || value == 0; } -#ifndef Q_CC_NOKIAX86 - inline operator RestrictedBool() const { return isNull() ? 0 : &QWeakPointer::value; } -#else - inline operator bool() const { return isNull() ? 0 : &QWeakPointer::value; } -#endif - inline bool operator !() const { return isNull(); } - inline T *data() const { return d == 0 || d->strongref == 0 ? 0 : value; } - - inline QWeakPointer() : d(0), value(0) { } - inline ~QWeakPointer() { if (d && !d->weakref.deref()) delete d; } - -#ifndef QT_NO_QOBJECT - // special constructor that is enabled only if X derives from QObject - template <class X> - inline QWeakPointer(X *ptr) : d(ptr ? d->getAndRef(ptr) : 0), value(ptr) - { } -#endif - template <class X> - inline QWeakPointer &operator=(X *ptr) - { return *this = QWeakPointer(ptr); } - - inline QWeakPointer(const QWeakPointer<T> &o) : d(o.d), value(o.value) - { if (d) d->weakref.ref(); } - inline QWeakPointer<T> &operator=(const QWeakPointer<T> &o) - { - internalSet(o.d, o.value); - return *this; - } - - inline QWeakPointer(const QSharedPointer<T> &o) : d(o.d), value(o.data()) - { if (d) d->weakref.ref();} - inline QWeakPointer<T> &operator=(const QSharedPointer<T> &o) - { - internalSet(o.d, o.value); - return *this; - } - - template <class X> - inline QWeakPointer(const QWeakPointer<X> &o) : d(0), value(0) - { *this = o; } - - template <class X> - inline QWeakPointer<T> &operator=(const QWeakPointer<X> &o) - { - // conversion between X and T could require access to the virtual table - // so force the operation to go through QSharedPointer - *this = o.toStrongRef(); - return *this; - } - - template <class X> - inline bool operator==(const QWeakPointer<X> &o) const - { return d == o.d && value == static_cast<const T *>(o.value); } - - template <class X> - inline bool operator!=(const QWeakPointer<X> &o) const - { return !(*this == o); } - - template <class X> - inline QWeakPointer(const QSharedPointer<X> &o) : d(0), value(0) - { *this = o; } - - template <class X> - inline QWeakPointer<T> &operator=(const QSharedPointer<X> &o) - { - QSHAREDPOINTER_VERIFY_AUTO_CAST(T, X); // if you get an error in this line, the cast is invalid - internalSet(o.d, o.data()); - return *this; - } - - template <class X> - inline bool operator==(const QSharedPointer<X> &o) const - { return d == o.d; } - - template <class X> - inline bool operator!=(const QSharedPointer<X> &o) const - { return !(*this == o); } - - inline void clear() { *this = QWeakPointer<T>(); } - - inline QSharedPointer<T> toStrongRef() const { return QSharedPointer<T>(*this); } - -#if defined(QWEAKPOINTER_ENABLE_ARROW) - inline T *operator->() const { return data(); } -#endif - -private: - -#if defined(Q_NO_TEMPLATE_FRIENDS) -public: -#else - template <class X> friend class QSharedPointer; -#endif - - inline void internalSet(Data *o, T *actual) - { - if (d == o) return; - if (o) - o->weakref.ref(); - if (d && !d->weakref.deref()) - delete d; - d = o; - value = actual; - } - - Data *d; - T *value; -}; - -template <class T, class X> -bool operator==(const QSharedPointer<T> &ptr1, const QSharedPointer<X> &ptr2) -{ - return ptr1.data() == ptr2.data(); -} -template <class T, class X> -bool operator!=(const QSharedPointer<T> &ptr1, const QSharedPointer<X> &ptr2) -{ - return ptr1.data() != ptr2.data(); -} - -template <class T, class X> -bool operator==(const QSharedPointer<T> &ptr1, const X *ptr2) -{ - return ptr1.data() == ptr2; -} -template <class T, class X> -bool operator==(const T *ptr1, const QSharedPointer<X> &ptr2) -{ - return ptr1 == ptr2.data(); -} - -template <class T, class X> -bool operator!=(const QSharedPointer<T> &ptr1, const X *ptr2) -{ - return !(ptr1 == ptr2); -} -template <class T, class X> -bool operator!=(const T *ptr1, const QSharedPointer<X> &ptr2) -{ - return !(ptr2 == ptr1); -} - -template <class T, class X> -bool operator==(const QSharedPointer<T> &ptr1, const QWeakPointer<X> &ptr2) -{ - return ptr2 == ptr1; -} -template <class T, class X> -bool operator!=(const QSharedPointer<T> &ptr1, const QWeakPointer<X> &ptr2) -{ - return ptr2 != ptr1; -} - -template <class T, class X> -Q_INLINE_TEMPLATE typename T::difference_type operator-(const QSharedPointer<T> &ptr1, const QSharedPointer<X> &ptr2) -{ - return ptr1.data() - ptr2.data(); -} - -template <class T> -Q_INLINE_TEMPLATE QWeakPointer<T> QSharedPointer<T>::toWeakRef() const -{ - return QWeakPointer<T>(*this); -} - -template <class T> -inline void qSwap(QSharedPointer<T> &p1, QSharedPointer<T> &p2) -{ - p1.swap(p2); -} - -namespace QtSharedPointer { -// helper functions: - template <class X, class T> - Q_INLINE_TEMPLATE QSharedPointer<X> copyAndSetPointer(X *ptr, const QSharedPointer<T> &src) - { - QSharedPointer<X> result; - result.internalSet(src.d, ptr); - return result; - } -} - -// cast operators -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerCast(const QSharedPointer<T> &src) -{ - register X *ptr = static_cast<X *>(src.data()); // if you get an error in this line, the cast is invalid - return QtSharedPointer::copyAndSetPointer(ptr, src); -} -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerCast(const QWeakPointer<T> &src) -{ - return qSharedPointerCast<X, T>(src.toStrongRef()); -} - -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerDynamicCast(const QSharedPointer<T> &src) -{ - register X *ptr = dynamic_cast<X *>(src.data()); // if you get an error in this line, the cast is invalid - return QtSharedPointer::copyAndSetPointer(ptr, src); -} -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerDynamicCast(const QWeakPointer<T> &src) -{ - return qSharedPointerDynamicCast<X, T>(src.toStrongRef()); -} - -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerConstCast(const QSharedPointer<T> &src) -{ - register X *ptr = const_cast<X *>(src.data()); // if you get an error in this line, the cast is invalid - return QtSharedPointer::copyAndSetPointer(ptr, src); -} -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerConstCast(const QWeakPointer<T> &src) -{ - return qSharedPointerConstCast<X, T>(src.toStrongRef()); -} - -template <class X, class T> -Q_INLINE_TEMPLATE -QWeakPointer<X> qWeakPointerCast(const QSharedPointer<T> &src) -{ - return qSharedPointerCast<X, T>(src).toWeakRef(); -} - -#ifndef QT_NO_QOBJECT -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerObjectCast(const QSharedPointer<T> &src) -{ - register X *ptr = qobject_cast<X *>(src.data()); - return QtSharedPointer::copyAndSetPointer(ptr, src); -} -template <class X, class T> -Q_INLINE_TEMPLATE QSharedPointer<X> qSharedPointerObjectCast(const QWeakPointer<T> &src) -{ - return qSharedPointerObjectCast<X>(src.toStrongRef()); -} - -template <class X, class T> -inline QSharedPointer<typename QtSharedPointer::RemovePointer<X>::Type> -qobject_cast(const QSharedPointer<T> &src) -{ - return qSharedPointerObjectCast<typename QtSharedPointer::RemovePointer<X>::Type, T>(src); -} -template <class X, class T> -inline QSharedPointer<typename QtSharedPointer::RemovePointer<X>::Type> -qobject_cast(const QWeakPointer<T> &src) -{ - return qSharedPointerObjectCast<typename QtSharedPointer::RemovePointer<X>::Type, T>(src); -} - -#endif - -QT_END_NAMESPACE - -QT_END_HEADER - -#endif |