zypp::RW_pointer< _D, _Traits > Struct Template Reference
[Smart pointer types]

Wrapper for const correct access via Smart pointer types. More...

#include <PtrTypes.h>

List of all members.

Public Types
typedef _Traits::_Ptr	_Ptr
typedef _Traits::_constPtr	_constPtr
typedef _Ptr::unspecified_bool_type	unspecified_bool_type
Public Member Functions
	RW_pointer (typename _Ptr::element_type *dptr=0)
	RW_pointer (_Ptr dptr)
void	reset ()
void	reset (typename _Ptr::element_type *dptr)
void	swap (RW_pointer &rhs)
void	swap (_Ptr &rhs)
	operator unspecified_bool_type () const
const _D &	operator * () const
const _D *	operator-> () const
const _D *	get () const
_D &	operator * ()
_D *	operator-> ()
_D *	get ()
bool	unique () const
long	use_count () const
_constPtr	getPtr () const
_Ptr	getPtr ()
Private Attributes
_Ptr	_dptr
Related Functions
(Note that these are not member functions.)
std::ostream &	operator<< (std::ostream &str, const RW_pointer< _D, _Ptr > &obj)
	Stream output.

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Detailed Description

template<class _D, class _Traits = rw_pointer::Shared<_D>>
struct zypp::RW_pointer< _D, _Traits >

Wrapper for const correct access via Smart pointer types.

zypp::RW_pointer<tt><_D,_Traits> stores a Smart pointer types of type _Traits::_Ptr, which must be convertible into a _D *. Pointer style access (via -> and *) offers a const _D * in const a context, otherwise a _D *. Thus RW_ means read/write, as you get a different type, dependent on whether you're allowed to read or write.

Forwarding access from an interface to an implemantation class, an RW_pointer prevents const interface methods from accidentally calling nonconst implementation methods.

The second template argument defaults to _Traits = rw_pointer::Shared<_D> thus wraping a shared_ptr<_D>. To wrap an intrusive_ptr<_D> use rw_pointer::Intrusive<_D>.

See also:

zypp::RWCOW_pointer for 'copy on write' functionality.

 #include "zypp/base/PtrTypes.h"

 class Foo
 {
   ...
   private:
     // Implementation class
     struct Impl;
     // Pointer to implementation; actually a shared_ptr<Impl>
     RW_pointer<Impl> _pimpl;

     void baa()       { _pimpl->... } // is Impl *
     void baa() const { _pimpl->... } // is Impl const *
 };

Definition at line 210 of file PtrTypes.h.

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Member Typedef Documentation

template<class _D, class _Traits = rw_pointer::Shared<_D>>

typedef _Traits::_Ptr zypp::RW_pointer< _D, _Traits >::_Ptr

Definition at line 212 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

typedef _Traits::_constPtr zypp::RW_pointer< _D, _Traits >::_constPtr

Definition at line 213 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

typedef _Ptr::unspecified_bool_type zypp::RW_pointer< _D, _Traits >::unspecified_bool_type

Definition at line 214 of file PtrTypes.h.

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Constructor & Destructor Documentation

template<class _D, class _Traits = rw_pointer::Shared<_D>>

zypp::RW_pointer< _D, _Traits >::RW_pointer

(

typename _Ptr::element_type *

dptr = 0

)

[inline, explicit]

Definition at line 217 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

zypp::RW_pointer< _D, _Traits >::RW_pointer

(

_Ptr

dptr

)

[inline, explicit]

Definition at line 222 of file PtrTypes.h.

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Member Function Documentation

template<class _D, class _Traits = rw_pointer::Shared<_D>>

void zypp::RW_pointer< _D, _Traits >::reset

(

)

[inline]

Definition at line 226 of file PtrTypes.h.

Referenced by zypp::media::MediaHandler::checkAttached(), zypp::media::MediaHandler::release(), zypp::media::MediaHandler::setAttachPoint(), and zypp::media::MediaHandler::setMediaSource().

template<class _D, class _Traits = rw_pointer::Shared<_D>>

void zypp::RW_pointer< _D, _Traits >::reset

(

typename _Ptr::element_type *

dptr

)

[inline]

Definition at line 229 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

void zypp::RW_pointer< _D, _Traits >::swap

(

RW_pointer< _D, _Traits > &

rhs

)

[inline]

Definition at line 232 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

void zypp::RW_pointer< _D, _Traits >::swap

(

_Ptr &

rhs

)

[inline]

Definition at line 235 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

zypp::RW_pointer< _D, _Traits >::operator unspecified_bool_type

(

)

const [inline]

Definition at line 238 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

const _D& zypp::RW_pointer< _D, _Traits >::operator *

(

)

const [inline]

Definition at line 241 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

const _D* zypp::RW_pointer< _D, _Traits >::operator->

(

)

const [inline]

Definition at line 244 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

const _D* zypp::RW_pointer< _D, _Traits >::get

(

)

const [inline]

Definition at line 247 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_D& zypp::RW_pointer< _D, _Traits >::operator *

(

)

[inline]

Definition at line 250 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_D* zypp::RW_pointer< _D, _Traits >::operator->

(

)

[inline]

Definition at line 253 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_D* zypp::RW_pointer< _D, _Traits >::get

(

)

[inline]

Definition at line 256 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

bool zypp::RW_pointer< _D, _Traits >::unique

(

)

const [inline]

Definition at line 260 of file PtrTypes.h.

Referenced by zypp::media::MediaHandler::isSharedMedia(), zypp::media::MediaHandler::release(), and zypp::media::MediaHandler::removeAttachPoint().

template<class _D, class _Traits = rw_pointer::Shared<_D>>

long zypp::RW_pointer< _D, _Traits >::use_count

(

)

const [inline]

Definition at line 263 of file PtrTypes.h.

Referenced by zypp::media::MediaHandler::release().

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_constPtr zypp::RW_pointer< _D, _Traits >::getPtr

(

)

const [inline]

Definition at line 266 of file PtrTypes.h.

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_Ptr zypp::RW_pointer< _D, _Traits >::getPtr

(

)

[inline]

Definition at line 269 of file PtrTypes.h.

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Member Data Documentation

template<class _D, class _Traits = rw_pointer::Shared<_D>>

_Ptr zypp::RW_pointer< _D, _Traits >::_dptr [private]

Definition at line 273 of file PtrTypes.h.

Referenced by zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::get(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::getPtr(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::operator *(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::operator unspecified_bool_type(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::operator->(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::reset(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::swap(), zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::unique(), and zypp::RW_pointer< zypp::target::modalias::Modalias::Impl >::use_count().

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

• zypp/base/PtrTypes.h

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