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/*MT*
MediaTomb - http://www.mediatomb.cc/
ref.h - this file is part of MediaTomb.
Copyright (C) 2005 Gena Batyan <bgeradz@mediatomb.cc>,
Sergey 'Jin' Bostandzhyan <jin@mediatomb.cc>
Copyright (C) 2006-2007 Gena Batyan <bgeradz@mediatomb.cc>,
Sergey 'Jin' Bostandzhyan <jin@mediatomb.cc>,
Leonhard Wimmer <leo@mediatomb.cc>
MediaTomb is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
MediaTomb is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
version 2 along with MediaTomb; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
$Id: ref.h 1294 2007-05-13 16:28:24Z lww $
*/
/// \file ref.h
#ifndef __ZMM_REF_H__
#define __ZMM_REF_H__
#include "nil.h"
namespace zmm
{
template <class T>
class Ref
{
public:
Ref(const Ref& other)
{
_ptr = other._ptr;
if(_ptr)
_ptr->retain();
}
explicit Ref(T* ptr = NULL) : _ptr(ptr)
{
if(ptr)
ptr->retain();
}
Ref(NIL_VAR)
{
_ptr = NULL;
}
~Ref()
{
if(_ptr)
_ptr->release();
}
Ref& operator=(const Ref& other)
{
if(_ptr)
_ptr->release();
_ptr = other._ptr;
if(_ptr)
_ptr->retain();
return *this;
}
inline Ref& operator=(NIL_VAR)
{
if(_ptr)
_ptr->release();
_ptr = NULL;
return *this;
}
inline T& operator*() const
{
return *_ptr;
}
inline T* operator->() const
{
return _ptr;
}
inline T* getPtr()
{
return _ptr;
}
inline int operator==(NIL_VAR)
{
return (_ptr == NULL);
}
inline int operator!=(NIL_VAR)
{
return (_ptr != NULL);
}
inline int operator==(const Ref& other)
{
return (_ptr == other._ptr);
}
inline int operator!=(const Ref& other)
{
return (_ptr != other._ptr);
}
protected:
T* _ptr;
};
} // namespace
#define RefCast(ref, klass) zmm::Ref<klass>((klass *)ref.getPtr())
#endif // __ZMM_REF_H__
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