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

---

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.

---

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.

---

Member Function Documentation

template<typename _Rep> const _Rep& VarPtr< _Rep >::operator * (   )  const [inline]

template<typename _Rep> _Rep& VarPtr< _Rep >::operator * (   )  [inline]

template<typename _Rep> const _Rep* VarPtr< _Rep >::operator-> (   )  const [inline]

template<typename _Rep> _Rep* VarPtr< _Rep >::operator-> (   )  [inline]

template<typename _Rep> _Rep* VarPtr< _Rep >::ptr (   )  const [inline, private]

---

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

• Rep.h

---