00001 /* 00002 Libraries for fields, doubly-linked lists and red-black trees. 00003 Copyright (C) 2001 James S. Plank 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Lesser General Public 00007 License as published by the Free Software Foundation; either 00008 version 2.1 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Lesser General Public License for more details. 00014 00015 You should have received a copy of the GNU Lesser General Public 00016 License along with this library; if not, write to the Free Software 00017 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 00019 --------------------------------------------------------------------------- 00020 Please see http://www.cs.utk.edu/~plank/plank/classes/cs360/360/notes/Libfdr/ 00021 for instruction on how to use this library. 00022 00023 Jim Plank 00024 plank@cs.utk.edu 00025 http://www.cs.utk.edu/~plank 00026 00027 Associate Professor 00028 Department of Computer Science 00029 University of Tennessee 00030 203 Claxton Complex 00031 1122 Volunteer Blvd. 00032 Knoxville, TN 37996-3450 00033 00034 865-974-4397 00035 Fax: 865-974-4404 00036 */ 00037 #ifndef _DLLIST_H_ 00038 #define _DLLIST_H_ 00039 00040 #include "jval.h" 00041 00042 typedef struct dllist { 00043 struct dllist *flink; 00044 struct dllist *blink; 00045 Jval val; 00046 } *Dllist; 00047 00048 extern Dllist new_dllist(); 00049 extern void free_dllist(Dllist); 00050 00051 extern void dll_append(Dllist, Jval); 00052 extern void dll_prepend(Dllist, Jval); 00053 extern void dll_insert_b(Dllist, Jval); 00054 extern void dll_insert_a(Dllist, Jval); 00055 00056 extern void dll_delete_node(Dllist); 00057 extern int dll_empty(Dllist); 00058 00059 extern Jval dll_val(Dllist); 00060 00061 #define dll_first(d) ((d)->flink) 00062 #define dll_next(d) ((d)->flink) 00063 #define dll_last(d) ((d)->blink) 00064 #define dll_prev(d) ((d)->blink) 00065 #define dll_nil(d) (d) 00066 00067 #define dll_traverse(ptr, list) \ 00068 for (ptr = list->flink; ptr != list; ptr = ptr->flink) 00069 #define dll_rtraverse(ptr, list) \ 00070 for (ptr = list->blink; ptr != list; ptr = ptr->blink) 00071 00072 #endif