Templatize wxScopedPtr
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51070 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
@@ -382,8 +382,9 @@ wxWidgets provides a few smart pointer class templates.
|
||||
|
||||
\twocolwidtha{6cm}
|
||||
\begin{twocollist}\itemsep=0pt
|
||||
\twocolitem{\helpref{wxWeakRef<T>}{wxweakref}}{A weak reference}
|
||||
\twocolitem{\helpref{wxObjectDataPtr<T>}{wxobjectdataptr}}{A shared pointer using intrusive reference counting}
|
||||
\twocolitem{\helpref{wxScopedPtr<T>}{wxscopedptrtemplate}}{A scoped pointer}
|
||||
\twocolitem{\helpref{wxWeakRef<T>}{wxweakref}}{A weak reference}
|
||||
\end{twocollist}
|
||||
|
||||
{\large {\bf Run-time class information system}}
|
||||
|
@@ -358,6 +358,7 @@
|
||||
\input sashwin.tex
|
||||
\input scpdarry.tex
|
||||
\input scpdptr.tex
|
||||
\input scopedptr.tex
|
||||
\input screendc.tex
|
||||
\input scrolbar.tex
|
||||
\input scrolwin.tex
|
||||
|
@@ -4,6 +4,9 @@ This is a simple scoped smart pointer implementation that is similar to
|
||||
the \urlref{Boost}{http://www.boost.org/} smart pointers but rewritten to
|
||||
use macros instead.
|
||||
|
||||
Since wxWidgets 2.9.0 there is also a templated version of this class
|
||||
with the same name. See \helpref{wxScopedPtr<T>}{wxscopedptrtemplate}.
|
||||
|
||||
A smart pointer holds a pointer to an object. The memory used by the object is
|
||||
deleted when the smart pointer goes out of scope. This class is different from
|
||||
the \texttt{std::auto\_ptr<>} in so far as it doesn't provide copy constructor
|
||||
|
71
docs/latex/wx/sharedptr.tex
Normal file
71
docs/latex/wx/sharedptr.tex
Normal file
@@ -0,0 +1,71 @@
|
||||
\section{\class{wxSharedPtr<T>}}\label{wxsharedptr}
|
||||
|
||||
A smart pointer with non-intrusive reference counting.
|
||||
|
||||
\wxheading{Derived from}
|
||||
|
||||
No base class
|
||||
|
||||
\wxheading{Include files}
|
||||
|
||||
<ptr\_shrd.h>
|
||||
|
||||
\wxheading{Data structures}
|
||||
|
||||
{\small \begin{verbatim}
|
||||
typedef T element\_type
|
||||
\end{verbatim}}
|
||||
|
||||
\latexignore{\rtfignore{\wxheading{Members}}}
|
||||
|
||||
|
||||
\membersection{wxSharedPtr<T>::wxSharedPtr<T>}\label{wxsharedptrwxsharedptr}
|
||||
|
||||
\func{wxEXPLICIT}{wxSharedPtr<T>}{\param{T* }{ptr = NULL}}
|
||||
|
||||
\func{}{wxSharedPtr<T>}{\param{const wxSharedPtr<T>\& }{tocopy}}
|
||||
|
||||
Constructors.
|
||||
|
||||
\membersection{wxSharedPtr<T>::\destruct{wxSharedPtr<T>}}\label{wxsharedptrdtor}
|
||||
|
||||
\func{}{\destruct{wxSharedPtr<T>}}{\void}
|
||||
|
||||
Destructor.
|
||||
|
||||
\membersection{wxSharedPtr<T>::get}\label{wxsharedptrget}
|
||||
|
||||
\constfunc{T*}{get}{\void}
|
||||
|
||||
Returns pointer to its object or NULL.
|
||||
|
||||
\membersection{wxSharedPtr<T>::operator*}\label{wxsharedptroperatorptrt}
|
||||
|
||||
\constfunc{T\&}{operator*}{\void}
|
||||
|
||||
Returns pointer to its object or NULL.
|
||||
|
||||
\membersection{wxSharedPtr<T>::operator->}\label{wxsharedptroperatorderef}
|
||||
|
||||
\constfunc{T*}{operator->}{\void}
|
||||
|
||||
Returns pointer to its object or NULL.
|
||||
|
||||
\membersection{wxSharedPtr<T>::operator=}\label{wxsharedptroperatorassign}
|
||||
|
||||
\func{wxSharedPtr<T>\& operator}{operator=}{\param{const wxSharedPtr<T>\& }{tocopy}}
|
||||
|
||||
Assignment operator.
|
||||
|
||||
\membersection{wxSharedPtr<T>::unique}\label{wxsharedptrunique}
|
||||
|
||||
\constfunc{bool}{unique}{\void}
|
||||
|
||||
Returns true if this is the only pointer pointing to its object.
|
||||
|
||||
\membersection{wxSharedPtr<T>::use\_count}\label{wxsharedptruse\_count}
|
||||
|
||||
\constfunc{long}{use\_count}{\void}
|
||||
|
||||
Returns the number of pointers pointing to its object.
|
||||
|
@@ -30,6 +30,76 @@
|
||||
|
||||
#include "wx/defs.h"
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// wxScopedPtr: A scoped pointer
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
template <class T>
|
||||
class wxScopedPtr
|
||||
{
|
||||
private:
|
||||
T * m_ptr;
|
||||
|
||||
wxScopedPtr(wxScopedPtr const &);
|
||||
wxScopedPtr & operator=(wxScopedPtr const &);
|
||||
|
||||
public:
|
||||
typedef T element_type;
|
||||
|
||||
wxEXPLICIT wxScopedPtr(T * ptr = NULL)
|
||||
: m_ptr(ptr) { }
|
||||
|
||||
~wxScopedPtr()
|
||||
{
|
||||
if (m_ptr)
|
||||
delete m_ptr;
|
||||
}
|
||||
|
||||
void reset(T * ptr = NULL)
|
||||
{
|
||||
if (m_ptr != ptr)
|
||||
{
|
||||
delete m_ptr;
|
||||
m_ptr = ptr;
|
||||
}
|
||||
}
|
||||
|
||||
T *release()
|
||||
{
|
||||
T *ptr = m_ptr;
|
||||
m_ptr = NULL;
|
||||
return ptr;
|
||||
}
|
||||
|
||||
T & operator*() const
|
||||
{
|
||||
wxASSERT(m_ptr != NULL);
|
||||
return *m_ptr;
|
||||
}
|
||||
|
||||
T * operator->() const
|
||||
{
|
||||
wxASSERT(m_ptr != NULL);
|
||||
return m_ptr;
|
||||
}
|
||||
|
||||
T * get() const
|
||||
{
|
||||
return m_ptr;
|
||||
}
|
||||
|
||||
void swap(wxScopedPtr & ot)
|
||||
{
|
||||
T * tmp = ot.m_ptr;
|
||||
ot.m_ptr = m_ptr;
|
||||
m_ptr = tmp;
|
||||
}
|
||||
};
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// old macro based implementation
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
/*
|
||||
checked deleters are used to make sure that the type being deleted is really
|
||||
a complete type.: otherwise sizeof() would result in a compile-time error
|
||||
@@ -62,16 +132,10 @@
|
||||
delete [] ptr; \
|
||||
} wxPOST_NO_WARNING_SCOPE(scope_var2)
|
||||
|
||||
/* These scoped pointers are *not* assignable and cannot be used
|
||||
within a container. Look for wxDECLARE_SHARED_PTR for this
|
||||
functionality.
|
||||
|
||||
In addition, the type being used *must* be complete at the time
|
||||
/* The type being used *must* be complete at the time
|
||||
that wxDEFINE_SCOPED_* is called or a compiler error will result.
|
||||
This is because the class checks for the completeness of the type
|
||||
being used.
|
||||
*/
|
||||
|
||||
being used. */
|
||||
|
||||
#define wxDECLARE_SCOPED_PTR(T, name) \
|
||||
class name \
|
||||
|
Reference in New Issue
Block a user