/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB      This library is free software; you can redistribute it and/or   modify it under the terms of the GNU Library General Public   License as published by the Free Software Foundation; either   version 2 of the License, or (at your option) any later version.      This library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   Library General Public License for more details.      You should have received a copy of the GNU Library General Public   License along with this library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,   MA 02111-1307, USA */#ifndef _list_h_#define _list_h_#ifdef	__cplusplusextern "C" {#endiftypedef struct st_list {  struct st_list *prev,*next;  void *data;} LIST;typedef int (*list_walk_action)(void *,void *);extern LIST *list_add(LIST *root,LIST *element);extern LIST *list_delete(LIST *root,LIST *element);extern LIST *list_cons(void *data,LIST *root);extern LIST *list_reverse(LIST *root);extern void list_free(LIST *root,pbool free_data);extern uint list_length(LIST *list);extern int list_walk(LIST *list,list_walk_action action,gptr argument);#define rest(a) ((a)->next)#define list_push(a,b) (a)=list_cons((b),(a))#define list_pop(A) {LIST *old=(A); (A)=list_delete(old,old) ; my_free((gptr) old,MYF(MY_FAE)); }#ifdef	__cplusplus}#endif#endif