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/*
Copyright (C) 1998-99 Paul Barton-Davis
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 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __qm_rcpointer_h__
#define __qm_rcpointer_h__
template<class T> class RCPointer {
public:
T *operator->() { return _ptr; }
bool operator==(T *p) { return _ptr == p; }
bool operator!=(T *p) { return _ptr != p; }
int refcount() { return _ptr->count; }
RCPointer () { _ptr = 0; }
RCPointer (T *p) : _ptr (p) {
if (_ptr) _ptr->count++;
}
RCPointer (const RCPointer& r) : _ptr (r._ptr) {
if (_ptr) _ptr->count++;
}
RCPointer &operator= (const RCPointer &r) {
if (_ptr == r._ptr) return *this;
if (_ptr && --_ptr->count == 0) {
delete _ptr;
}
_ptr = r._ptr;
if (_ptr) _ptr->count++;
return *this;
}
~RCPointer () {
if (_ptr && --_ptr->count == 0) {
delete _ptr;
}
}
private:
T *_ptr;
};
#endif // __qm_rcpointer_h__
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