mirror of https://github.com/sudo-project/sudo.git
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
|
|
* SPDX-License-Identifier: ISC
|
|
*
|
|
* Copyright (c) 2004, 2007, 2010, 2013
|
|
* Todd C. Miller <Todd.Miller@sudo.ws>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef SUDOERS_REDBLACK_H
|
|
#define SUDOERS_REDBLACK_H
|
|
|
|
enum rbcolor {
|
|
red,
|
|
black
|
|
};
|
|
|
|
enum rbtraversal {
|
|
preorder,
|
|
inorder,
|
|
postorder
|
|
};
|
|
|
|
struct rbnode {
|
|
struct rbnode *left, *right, *parent;
|
|
void *data;
|
|
enum rbcolor color;
|
|
};
|
|
|
|
struct rbtree {
|
|
int (*compar)(const void *, const void *);
|
|
struct rbnode root;
|
|
struct rbnode nil;
|
|
};
|
|
|
|
#define rbapply(t, f, c, o) rbapply_node((t), (t)->root.left, (f), (c), (o))
|
|
#define rbisempty(t) ((t)->root.left == &(t)->nil && (t)->root.right == &(t)->nil)
|
|
#define rbfirst(t) ((t)->root.left)
|
|
#define rbroot(t) (&(t)->root)
|
|
#define rbnil(t) (&(t)->nil)
|
|
|
|
void *rbdelete(struct rbtree *, struct rbnode *);
|
|
int rbapply_node(struct rbtree *, struct rbnode *,
|
|
int (*)(void *, void *), void *, enum rbtraversal);
|
|
struct rbnode *rbfind(struct rbtree *, void *);
|
|
int rbinsert(struct rbtree *, void *, struct rbnode **);
|
|
struct rbtree *rbcreate(int (*)(const void *, const void *));
|
|
void rbdestroy(struct rbtree *, void (*)(void *));
|
|
|
|
#endif /* SUDOERS_REDBLACK_H */
|