QWeakPointer< T > Class Template Reference

#include <qsharedpointer_impl.h>

Class Description

template<class T>
class QWeakPointer< T >

Definition at line 88 of file qsharedpointer_impl.h.

Public Types
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 qptrdiff	difference_type

Public Member Functions
bool	isNull () const
	operator RestrictedBool () const
bool	operator! () const
T *	data () const
	QWeakPointer ()
	~QWeakPointer ()
template<class X >
	QWeakPointer (X *ptr)
template<class X >
QWeakPointer &	operator= (X *ptr)
	QWeakPointer (const QWeakPointer< T > &o)
QWeakPointer< T > &	operator= (const QWeakPointer< T > &o)
	QWeakPointer (const QSharedPointer< T > &o)
QWeakPointer< T > &	operator= (const QSharedPointer< T > &o)
template<class X >
	QWeakPointer (const QWeakPointer< X > &o)
template<class X >
QWeakPointer< T > &	operator= (const QWeakPointer< X > &o)
template<class X >
bool	operator== (const QWeakPointer< X > &o) const
template<class X >
bool	operator!= (const QWeakPointer< X > &o) const
template<class X >
	QWeakPointer (const QSharedPointer< X > &o)
template<class X >
QWeakPointer< T > &	operator= (const QSharedPointer< X > &o)
template<class X >
bool	operator== (const QSharedPointer< X > &o) const
template<class X >
bool	operator!= (const QSharedPointer< X > &o) const
void	clear ()
QSharedPointer< T >	toStrongRef () const

Friends
template<class X >
class	QSharedPointer

Member Typedef Documentation

typedef T element_type

Definition at line 572 of file qsharedpointer_impl.h.

typedef T value_type

Definition at line 573 of file qsharedpointer_impl.h.

typedef value_type* pointer

Definition at line 574 of file qsharedpointer_impl.h.

typedef const value_type* const_pointer

Definition at line 575 of file qsharedpointer_impl.h.

typedef value_type& reference

Definition at line 576 of file qsharedpointer_impl.h.

typedef const value_type& const_reference

Definition at line 577 of file qsharedpointer_impl.h.

typedef qptrdiff difference_type

Definition at line 578 of file qsharedpointer_impl.h.

Constructor & Destructor Documentation

QWeakPointer ( )

inline

Definition at line 589 of file qsharedpointer_impl.h.

: d(0), value(0) { }

~QWeakPointer ( )

inline

Definition at line 590 of file qsharedpointer_impl.h.

{ if (d && !d->weakref.deref()) delete d; }

QWeakPointer ( X *  ptr )

inline

Definition at line 595 of file qsharedpointer_impl.h.

                                : d(ptr ? Data::getAndRef(ptr) : 0), value(ptr)
    { }

QWeakPointer ( const QWeakPointer< T > &  o )

inline

Definition at line 602 of file qsharedpointer_impl.h.

                                                  : d(o.d), value(o.value)
    { if (d) d->weakref.ref(); }

QWeakPointer ( const QSharedPointer< T > &  o )

inline

Definition at line 610 of file qsharedpointer_impl.h.

                                                    : d(o.d), value(o.data())
    { if (d) d->weakref.ref();}

QWeakPointer ( const QWeakPointer< X > &  o )

inline

Definition at line 619 of file qsharedpointer_impl.h.

                                                  : d(0), value(0)
    { *this = o; }

QWeakPointer ( const QSharedPointer< X > &  o )

inline

Definition at line 640 of file qsharedpointer_impl.h.

                                                    : d(0), value(0)
    { *this = o; }

Member Function Documentation

bool isNull ( ) const

inline

Definition at line 580 of file qsharedpointer_impl.h.

{ return d == 0 || d->strongref == 0 || value == 0; }

operator RestrictedBool ( ) const

inline

Definition at line 582 of file qsharedpointer_impl.h.

{ return isNull() ? 0 : &QWeakPointer::value; }

bool operator! ( void  ) const

inline

Definition at line 586 of file qsharedpointer_impl.h.

{ return isNull(); }

T* data ( ) const

inline

Definition at line 587 of file qsharedpointer_impl.h.

{ return d == 0 || d->strongref == 0 ? 0 : value; }

QWeakPointer& operator= ( X *  ptr )

inline

Definition at line 599 of file qsharedpointer_impl.h.

    { return *this = QWeakPointer(ptr); }

QWeakPointer<T>& operator= ( const QWeakPointer< T > &  o )

inline

Definition at line 604 of file qsharedpointer_impl.h.

    {
        internalSet(o.d, o.value);
        return *this;
    }

QWeakPointer<T>& operator= ( const QSharedPointer< T > &  o )

inline

Definition at line 612 of file qsharedpointer_impl.h.

    {
        internalSet(o.d, o.value);
        return *this;
    }

QWeakPointer<T>& operator= ( const QWeakPointer< X > &  o )

inline

Definition at line 623 of file qsharedpointer_impl.h.

    {
        // 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;
    }

bool operator== ( const QWeakPointer< X > &  o ) const

inline

Definition at line 632 of file qsharedpointer_impl.h.

    { return d == o.d && value == static_cast<const T *>(o.value); }

bool operator!= ( const QWeakPointer< X > &  o ) const

inline

Definition at line 636 of file qsharedpointer_impl.h.

    { return !(*this == o); }

QWeakPointer<T>& operator= ( const QSharedPointer< X > &  o )

inline

Definition at line 644 of file qsharedpointer_impl.h.

    {
        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;
    }

bool operator== ( const QSharedPointer< X > &  o ) const

inline

Definition at line 652 of file qsharedpointer_impl.h.

    { return d == o.d; }

bool operator!= ( const QSharedPointer< X > &  o ) const

inline

Definition at line 656 of file qsharedpointer_impl.h.

    { return !(*this == o); }

void clear ( )

inline

Definition at line 659 of file qsharedpointer_impl.h.

{ *this = QWeakPointer<T>(); }

QSharedPointer<T> toStrongRef ( ) const

inline

Definition at line 661 of file qsharedpointer_impl.h.

{ return QSharedPointer<T>(*this); }

Friends And Related Function Documentation

friend class QSharedPointer

friend

Definition at line 672 of file qsharedpointer_impl.h.

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The documentation for this class was generated from the following file:

• QtCore/qsharedpointer_impl.h