97 lines
3.2 KiB
C++
97 lines
3.2 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: dlist.h /main/4 1996/07/18 14:29:10 drk $
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*
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* Copyright (c) 1992 HaL Computer Systems, Inc. All rights reserved.
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* UNPUBLISHED -- rights reserved under the Copyright Laws of the United
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* States. Use of a copyright notice is precautionary only and does not
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* imply publication or disclosure.
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*
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* This software contains confidential information and trade secrets of HaL
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* Computer Systems, Inc. Use, disclosure, or reproduction is prohibited
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* without the prior express written permission of HaL Computer Systems, Inc.
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*
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* RESTRICTED RIGHTS LEGEND
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions as set forth in subparagraph (c)(l)(ii) of the Rights in
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* Technical Data and Computer Software clause at DFARS 252.227-7013.
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* HaL Computer Systems, Inc.
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* 1315 Dell Avenue, Campbell, CA 95008
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*
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*/
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#ifndef _dlist_h
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#define _dlist_h 1
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#include "utility/debug.h"
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#include "utility/types.h"
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#include "dstr/dlist_cell.h"
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// doubly-linked list class
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class dlist {
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public:
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dlist(Boolean remove_cells = true);
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virtual ~dlist();
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// append a dlist. x 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(dlist* tail_list);
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// update functions
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void insert_before(dlist_cell* ref, dlist_cell* x) ; //insert before ref
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void insert_after(dlist_cell* ref, dlist_cell* x) ; // insert after ref
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void insert_as_head(dlist_cell* x); // insert x at head
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void insert_as_tail(dlist_cell* x); // insert x at tail
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void delete_cell(dlist_cell*) ;
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void remove() ; // remove all cells (call delete on each cell)
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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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dlist_cell* get_head() { return v_head; };
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dlist_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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dlist_cell *v_head; // head pointer
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dlist_cell *v_tail; // tail pointer
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int remove_cells_when_done;
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};
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typedef dlist *dlistPtr;
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#endif
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