105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* $XConsortium: slist.h /main/4 1996/07/18 14:30:30 drk $
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*
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* Copyright (c) 1993 HAL Computer Systems International, Ltd.
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* All rights reserved. Unpublished -- rights reserved under
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* the Copyright Laws of the United States. USE OF A COPYRIGHT
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* NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
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* OR DISCLOSURE.
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*
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* THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
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* SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD. USE,
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* DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
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* PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
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* INTERNATIONAL, LTD.
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*
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* RESTRICTED RIGHTS LEGEND
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* Use, duplication, or disclosure by the Government is subject
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* to the restrictions as set forth in subparagraph (c)(l)(ii)
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* of the Rights in Technical Data and Computer Software clause
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* at DFARS 252.227-7013.
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*
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* HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
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* 1315 Dell Avenue
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* Campbell, CA 95008
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*
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*/
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#ifndef _slist_h
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#define _slist_h 1
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#include <stdarg.h>
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#include "utility/debug.h"
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#include "dstr/slist_cell.h"
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// single-linked list class
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class slist {
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public:
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slist(slist_cell* x = 0);
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virtual ~slist();
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// append a slist. tail_list becomes part of this list. no copy
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// is performed. tail_list -> head and tail_list -> tail
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// are set to NULL. Also, tail_list -> ct = 0.
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void append(slist* tail_list);
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// generalization of append(). arguments should be of type slist*.
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// this is returned
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slist* concate_with(slist* ...);
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// update functions
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void insert_as_tail(slist_cell* x) ;
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void delete_head() ;
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void delete_tail() ;
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// empty the list without free cells
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void empty_list() { v_head = v_tail = 0; v_ct = 0;} ;
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// status function
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int count() { return v_ct; }; // number of cells in the list
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slist_cell* get_head() { return v_head; };
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slist_cell* get_tail() { return v_tail; };
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long first(); // 0 if the list is empty
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void next(long & index);
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long last(); // 0 if the list is empty
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protected:
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int v_ct; // cell in the list
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slist_cell *v_head; // head pointer
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slist_cell *v_tail; // tail pointer
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};
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typedef slist *slistPtr;
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#endif
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