62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
/*
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Copyright (C) 1998-99 Paul Barton-Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#ifndef __qm_rcpointer_h__
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#define __qm_rcpointer_h__
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template<class T> class RCPointer {
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public:
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T *operator->() { return _ptr; }
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bool operator==(T *p) { return _ptr == p; }
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bool operator!=(T *p) { return _ptr != p; }
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int refcount() { return _ptr->count; }
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RCPointer () { _ptr = 0; }
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RCPointer (T *p) : _ptr (p) {
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if (_ptr) _ptr->count++;
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}
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RCPointer (const RCPointer& r) : _ptr (r._ptr) {
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if (_ptr) _ptr->count++;
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}
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RCPointer &operator= (const RCPointer &r) {
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if (_ptr == r._ptr) return *this;
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if (_ptr && --_ptr->count == 0) {
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delete _ptr;
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}
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_ptr = r._ptr;
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if (_ptr) _ptr->count++;
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return *this;
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}
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~RCPointer () {
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if (_ptr && --_ptr->count == 0) {
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delete _ptr;
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}
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}
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private:
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T *_ptr;
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};
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#endif // __qm_rcpointer_h__
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