watchlst.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _WATCHLIST_H_
- #define _WATCHLIST_H_
- class WListElem
- {
- public:
- WListElem();
- ~WListElem();
- WListElem* prev;
- WListElem* next;
- void* data;
- };
- class WatchList
- {
- public:
- WatchList();
- ~WatchList();
-
- void insert(WListElem*);
- void removeElem(WListElem*);
- int empty();
- WListElem* head;
- };
- inline
- WListElem::~WListElem()
- {
- }
- inline int
- WatchList::empty()
- {
- return (head->prev == head->next && head->next == head);
- }
- class WatchList_iterator
- {
- public:
- WatchList_iterator(WatchList*);
- WListElem* operator*();
- WListElem* operator++();
- private:
- WListElem* _h;
- WListElem* _e;
- WListElem* _n;
- };
- inline
- WatchList_iterator::WatchList_iterator(WatchList* l)
- {
- _h = l->head;
- _e = l->head->next;
- _n = l->head->next->next;
- }
- inline WListElem*
- WatchList_iterator::operator*()
- {
- return (_e != _h) ? _e : 0;
- }
- inline WListElem*
- WatchList_iterator::operator++()
- {
- _e = _n;
- _n = _n->next;
- return _e;
- }
- #endif /* _WATCHLIST_H_ */