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/* tnt/pointer.h
* Copyright (C) 2005 Tommi Maekitalo
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef TNT_POINTER_H
#define TNT_POINTER_H
namespace tnt
{
/// smart pointer for objects with own reference-counting through
/// addRef() and release()-methods.
template <typename data_type>
class Pointer
{
data_type* ptr;
public:
Pointer(data_type* p = 0)
: ptr(p)
{
if (ptr)
ptr->addRef();
}
Pointer(const Pointer& p)
: ptr(p.ptr)
{
if (ptr)
ptr->addRef();
}
~Pointer()
{
if (ptr)
ptr->release();
}
Pointer& operator= (const Pointer& s)
{
if (ptr)
ptr->release();
ptr = s.ptr;
if (ptr)
ptr->addRef();
return *this;
}
const data_type* getPtr() const { return ptr; }
data_type* getPtr() { return ptr; }
operator const data_type* () const { return ptr; }
const data_type* operator-> () const { return ptr; }
data_type* operator-> () { return ptr; }
};
}
#endif // TNT_POINTER_H
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