dep/include/mysql/my_list.h

   1 /* Copyright (C) 2000 MySQL AB
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; version 2 of the License.
   6
   7    This program is distributed in the hope that it will be useful,
   8    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10    GNU General Public License for more details.
  11
  12    You should have received a copy of the GNU General Public License
  13    along with this program; if not, write to the Free Software
  14    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  15
  16 #ifndef _list_h_
  17 #define _list_h_
  18
  19 #ifdef  __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 typedef struct st_list {
  24   struct st_list *prev,*next;
  25   void *data;
  26 } LIST;
  27
  28 typedef int (*list_walk_action)(void *,void *);
  29
  30 extern LIST *list_add(LIST *root,LIST *element);
  31 extern LIST *list_delete(LIST *root,LIST *element);
  32 extern LIST *list_cons(void *data,LIST *root);
  33 extern LIST *list_reverse(LIST *root);
  34 extern void list_free(LIST *root,unsigned int free_data);
  35 extern unsigned int list_length(LIST *);
  36 extern int list_walk(LIST *,list_walk_action action,gptr argument);
  37
  38 #define list_rest(a) ((a)->next)
  39 #define list_push(a,b) (a)=list_cons((b),(a))
  40 #define list_pop(A) {LIST *old=(A); (A)=list_delete(old,old) ; my_free((gptr) old,MYF(MY_FAE)); }
  41
  42 #ifdef  __cplusplus
  43 }
  44 #endif
  45 #endif