/* GLIB - Library of useful routines for C programming
 * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GLib Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GLib at ftp://ftp.gtk.org/pub/gtk/.
 */

#ifndef __F_LIST_H__
#define __F_LIST_H__

#define F_GNUC_WARN_UNUSED_RESULT __attribute__((warn_unused_result))

typedef void (*FDestroyNotify) (void * data);
typedef void (*FFunc) (void * data, void * user_data);
typedef int (*FCompareDataFunc) (const void * a, const void * b, void * user_data);
typedef int (*FCompareFunc) (const void * a, const void * b);
typedef void * (*FCopyFunc) (const void * src, void * data);

typedef struct _FList FList;

struct _FList
{
  void * data;
  FList *next;
  FList *prev;
};

/* Doubly linked lists
 */

FList*   f_list_alloc                   (void) F_GNUC_WARN_UNUSED_RESULT;

void     f_list_free                    (FList            *list);

void     f_list_free_1                  (FList            *list);
#define  f_list_free1                   f_list_free_1

void     f_list_free_full               (FList            *list,
					 FDestroyNotify    free_func);

FList*   f_list_append                  (FList            *list,
					 void *          data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_prepend                 (FList            *list,
					 void *          data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_insert                  (FList            *list,
					 void *          data,
					 int              position) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_insert_sorted           (FList            *list,
					 void *          data,
					 FCompareFunc      func) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_insert_sorted_with_data (FList            *list,
					 void *          data,
					 FCompareDataFunc  func,
					 void *          user_data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_insert_before           (FList            *list,
					 FList            *sibling,
					 void *          data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_concat                  (FList            *list1,
					 FList            *list2) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_remove                  (FList            *list,
					 const void *     data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_remove_all              (FList            *list,
					 const void *     data) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_remove_link             (FList            *list,
					 FList            *llink) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_delete_link             (FList            *list,
					 FList            *link_) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_reverse                 (FList            *list) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_copy                    (FList            *list) F_GNUC_WARN_UNUSED_RESULT;


FList*   f_list_copy_deep               (FList            *list,
					 FCopyFunc         func,
					 void *          user_data) F_GNUC_WARN_UNUSED_RESULT;


FList*   f_list_nth                     (FList            *list,
					 unsigned int             n);

FList*   f_list_nth_prev                (FList            *list,
					 unsigned int             n);

FList*   f_list_find                    (FList            *list,
					 const void *     data);

FList*   f_list_find_custom             (FList            *list,
					 const void *     data,
					 FCompareFunc      func);

int     f_list_position                (FList            *list,
					 FList            *llink);

int     f_list_index                   (FList            *list,
					 const void *     data);

FList*   f_list_last                    (FList            *list);

FList*   f_list_first                   (FList            *list);

unsigned int    f_list_length                  (FList            *list);

void     f_list_foreach                 (FList            *list,
					 FFunc             func,
					 void *          user_data);

FList*   f_list_sort                    (FList            *list,
					 FCompareFunc      compare_func) F_GNUC_WARN_UNUSED_RESULT;

FList*   f_list_sort_with_data          (FList            *list,
					 FCompareDataFunc  compare_func,
					 void *          user_data)  F_GNUC_WARN_UNUSED_RESULT;

void * f_list_nth_data                (FList            *list,
					 unsigned int             n);


#define f_list_previous(list)	        ((list) ? (((FList *)(list))->prev) : NULL)
#define f_list_next(list)	        ((list) ? (((FList *)(list))->next) : NULL)


#endif /* __F_LIST_H__ */