VarPtr< _Rep > Class Template Reference

Simple counted pointer with variable like const access. More...

#include <Rep.h>

Inheritance diagram for VarPtr< _Rep >:

List of all members.

Public Member Functions
	VarPtr ()
	VarPtr (_Rep *ptr_r)
_Rep *	operator-> ()
const _Rep *	operator-> () const
_Rep &	operator* ()
const _Rep &	operator* () const
Private Member Functions
_Rep *	ptr () const

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Detailed Description

template<typename _Rep>
class VarPtr< _Rep >

Simple counted pointer with variable like const access.

On construction and assignment it behaves like a pointer. I.e. a 'const VarPtr<_Tp>' is a '_Tp *const'.

But accessing _Tp (via operator-> or operator*) its constness is propagated to _Tp. I.e. 'VarPtr<_Tp>' behaves like a '_Tp *' while a 'const VarPtr<_Tp>' behaves as a 'const _Tp *'.

Used in some classes to hide implementation data from the interface:

 class Foo
 {
   class _Implementation;
   VarPtr<_Implementation> _impl;
   ...
 

All a VarPtr does, is preventing accidential access to nonconst implementation data from const interface methods. If such access is intended is has to be expressed by using a cost_cast.

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Constructor & Destructor Documentation

template<typename _Rep >

VarPtr< _Rep >::VarPtr

(

)

[inline]

Default ctor: NULL

template<typename _Rep >

VarPtr< _Rep >::VarPtr

(

_Rep *

ptr_r

)

[inline, explicit]

See makeVarPtr for convenient construction.

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Member Function Documentation

template<typename _Rep >

const _Rep& VarPtr< _Rep >::operator*

(

)

const [inline]

References VarPtr< _Rep >::ptr().

template<typename _Rep >

_Rep& VarPtr< _Rep >::operator*

(

)

[inline]

References VarPtr< _Rep >::ptr().

template<typename _Rep >

const _Rep* VarPtr< _Rep >::operator->

(

)

const [inline]

References VarPtr< _Rep >::ptr().

template<typename _Rep >

_Rep* VarPtr< _Rep >::operator->

(

)

[inline]

References VarPtr< _Rep >::ptr().

template<typename _Rep >

_Rep* VarPtr< _Rep >::ptr

(

)

const [inline, private]

References BasicRepPtr::repPtr().

Referenced by VarPtr< _Rep >::operator*(), and VarPtr< _Rep >::operator->().

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

• Rep.h