2 * Copyright (c) 2007 Todd C. Miller <Todd.Miller@courtesan.com>
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.
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.
16 * $Sudo: list.h,v 1.3 2007/09/11 19:42:48 millert Exp $
23 * Convenience macro for declaring a list head.
26 #define TQ_DECLARE(n) \
32 #define TQ_DECLARE(n) \
40 * Foreach loops: forward and reverse
43 #define tq_foreach_fwd(h, v) \
44 for ((v) = (h)->first; (v) != NULL; (v) = (v)->next)
47 #define tq_foreach_rev(h, v) \
48 for ((v) = (h)->last; (v) != NULL; (v) = (v)->prev)
54 #define tq_init(h) do { \
60 * Simple macros to avoid exposing first/last and prev/next.
63 #define tq_empty(h) ((h)->first == NULL)
66 #define tq_first(h) ((h)->first)
69 #define tq_last(h) ((h)->last)
72 #define list_next(e) ((e)->next)
75 #define list_prev(e) ((e)->prev)
78 * Prototypes for list.c
80 void *tq_pop __P((void *));
81 void tq_append __P((void *, void *));
82 void list_append __P((void *, void *));
83 void list2tq __P((void *, void *));
85 #endif /* _SUDO_LIST_H */