-/*
- splay_tree.h -- header file for splay_tree.c
- Copyright (C) 2004-2006 Guus Sliepen <guus@tinc-vpn.org>
-
- 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.
-*/
-
-
-#ifndef __SPLAY_TREE_H__
-#define __SPLAY_TREE_H__
-
-typedef struct splay_node_t {
-
- /* Linked list part */
-
- struct splay_node_t *next;
- struct splay_node_t *prev;
-
- /* Tree part */
-
- struct splay_node_t *parent;
- struct splay_node_t *left;
- struct splay_node_t *right;
-
- /* Payload */
-
- void *data;
-
-} splay_node_t;
-
-typedef int (*splay_compare_t)(const void *, const void *);
-typedef void (*splay_action_t)(const void *);
-typedef void (*splay_action_node_t)(const splay_node_t *);
-
-typedef struct splay_tree_t {
-
- /* Linked list part */
-
- splay_node_t *head;
- splay_node_t *tail;
-
- /* Tree part */
-
- splay_node_t *root;
-
- splay_compare_t compare;
- splay_action_t delete;
-
-} splay_tree_t;
-
-/* (De)constructors */
-
-extern splay_tree_t *splay_alloc_tree(splay_compare_t, splay_action_t);
-extern void splay_free_tree(splay_tree_t *);
-
-extern splay_node_t *splay_alloc_node(void);
-extern void splay_free_node(splay_tree_t *tree, splay_node_t *);
-
-/* Insertion and deletion */
-
-extern splay_node_t *splay_insert(splay_tree_t *, void *);
-extern splay_node_t *splay_insert_node(splay_tree_t *, splay_node_t *);
-
-extern void splay_insert_top(splay_tree_t *, splay_node_t *);
-extern void splay_insert_before(splay_tree_t *, splay_node_t *, splay_node_t *);
-extern void splay_insert_after(splay_tree_t *, splay_node_t *, splay_node_t *);
-
-extern splay_node_t *splay_unlink(splay_tree_t *, void *);
-extern void splay_unlink_node(splay_tree_t *tree, splay_node_t *);
-extern void splay_delete(splay_tree_t *, void *);
-extern void splay_delete_node(splay_tree_t *, splay_node_t *);
-
-/* Fast tree cleanup */
-
-extern void splay_delete_tree(splay_tree_t *);
-
-/* Searching */
-
-extern void *splay_search(splay_tree_t *, const void *);
-extern void *splay_search_closest(splay_tree_t *, const void *, int *);
-extern void *splay_search_closest_smaller(splay_tree_t *, const void *);
-extern void *splay_search_closest_greater(splay_tree_t *, const void *);
-
-extern splay_node_t *splay_search_node(splay_tree_t *, const void *);
-extern splay_node_t *splay_search_closest_node(splay_tree_t *, const void *, int *);
-extern splay_node_t *splay_search_closest_node_nosplay(const splay_tree_t *, const void *, int *);
-extern splay_node_t *splay_search_closest_smaller_node(splay_tree_t *, const void *);
-extern splay_node_t *splay_search_closest_greater_node(splay_tree_t *, const void *);
-
-/* Tree walking */
-
-extern void splay_foreach(const splay_tree_t *, splay_action_t);
-extern void splay_foreach_node(const splay_tree_t *, splay_action_t);
-
-#endif