/*
 * Routines for working with singly linked lists
 * of 'links' - pointers to other data.
 * 
 * $Id$
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */
 
#ifndef BLI_LINKLIST_H
#define BLI_LINKLIST_H

struct MemArena;

typedef void (*LinkNodeFreeFP)(void *link);
typedef void (*LinkNodeApplyFP)(void *link, void *userdata);

struct LinkNode;
typedef struct LinkNode {
	struct LinkNode *next;
	void *link;
} LinkNode;

int		BLI_linklist_length		(struct LinkNode *list);
int		BLI_linklist_index		(struct LinkNode *list, void *ptr);

void	BLI_linklist_reverse	(struct LinkNode **listp);

void	BLI_linklist_prepend		(struct LinkNode **listp, void *ptr);
void	BLI_linklist_append	    	(struct LinkNode **listp, void *ptr);
void	BLI_linklist_prepend_arena	(struct LinkNode **listp, void *ptr, struct MemArena *ma);

void	BLI_linklist_free		(struct LinkNode *list, LinkNodeFreeFP freefunc);
void	BLI_linklist_apply		(struct LinkNode *list, LinkNodeApplyFP applyfunc, void *userdata);

#endif