/*
 * yahoo_list.h: linked list routines
 *
 * Some code copyright (C) 2002-2004, Philip S Tellis <philip.tellis AT gmx.net>
 * Other code copyright Meredydd Luff <meredydd AT everybuddy.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

/*
 * This is a replacement for the GList.  It only provides functions that 
 * we use in Ayttm.  Thanks to Meredyyd from everybuddy dev for doing 
 * most of it.
 */

#ifndef __YLIST_H__
#define __YLIST_H__

#ifdef __cplusplus
extern "C" {
#endif

	typedef struct _YList {
		struct _YList *next;
		struct _YList *prev;
		void *data;
	} YList;

	typedef int (*YListCompFunc) (const void *, const void *);
	typedef void (*YListFunc) (void *, void *);

	YList *y_list_append(YList *list, void *data);
	YList *y_list_prepend(YList *list, void *data);
	YList *y_list_remove_link(YList *list, const YList *link);
	YList *y_list_remove(YList *list, void *data);

	YList *y_list_insert_sorted(YList *list, void *data,
		YListCompFunc comp);

	YList *y_list_copy(YList *list);

	YList *y_list_concat(YList *list, YList *add);

	YList *y_list_find(YList *list, const void *data);
	YList *y_list_find_custom(YList *list, const void *data,
		YListCompFunc comp);

	YList *y_list_nth(YList *list, int n);

	void y_list_foreach(YList *list, YListFunc fn, void *user_data);

	void y_list_free_1(YList *list);
	void y_list_free(YList *list);
	int y_list_length(const YList *list);
	int y_list_empty(const YList *list);
	int y_list_singleton(const YList *list);

#define y_list_next(list)	list->next

#ifdef __cplusplus
}
#endif
#endif