Annotation of embedaddon/sudo/plugins/sudoers/redblack.h, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (c) 2004, 2007, 2010 Todd C. Miller <Todd.Miller@courtesan.com>
! 3: *
! 4: * Permission to use, copy, modify, and distribute this software for any
! 5: * purpose with or without fee is hereby granted, provided that the above
! 6: * copyright notice and this permission notice appear in all copies.
! 7: *
! 8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 15: */
! 16:
! 17: #ifndef _SUDO_REDBLACK_H
! 18: #define _SUDO_REDBLACK_H
! 19:
! 20: enum rbcolor {
! 21: red,
! 22: black
! 23: };
! 24:
! 25: enum rbtraversal {
! 26: preorder,
! 27: inorder,
! 28: postorder
! 29: };
! 30:
! 31: struct rbnode {
! 32: struct rbnode *left, *right, *parent;
! 33: void *data;
! 34: enum rbcolor color;
! 35: };
! 36:
! 37: struct rbtree {
! 38: int (*compar)(const void *, const void *);
! 39: struct rbnode root;
! 40: struct rbnode nil;
! 41: };
! 42:
! 43: #define rbapply(t, f, c, o) rbapply_node((t), (t)->root.left, (f), (c), (o))
! 44: #define rbisempty(t) ((t)->root.left == &(t)->nil && (t)->root.right == &(t)->nil)
! 45: #define rbfirst(t) ((t)->root.left)
! 46: #define rbroot(t) (&(t)->root)
! 47: #define rbnil(t) (&(t)->nil)
! 48:
! 49: void *rbdelete(struct rbtree *, struct rbnode *);
! 50: int rbapply_node(struct rbtree *, struct rbnode *,
! 51: int (*)(void *, void *), void *, enum rbtraversal);
! 52: struct rbnode *rbfind(struct rbtree *, void *);
! 53: struct rbnode *rbinsert(struct rbtree *, void *);
! 54: struct rbtree *rbcreate(int (*)(const void *, const void *));
! 55: void rbdestroy(struct rbtree *, void (*)(void *));
! 56:
! 57: #endif /* _SUDO_REDBLACK_H */
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