/****************************************************************************** | |
* | |
* Copyright (C) 2002 Jason Evans <jasone@canonware.com>. | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice(s), this list of conditions and the following disclaimer | |
* unmodified other than the allowable addition of one or more | |
* copyright notices. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice(s), this list of conditions and the following disclaimer in | |
* the documentation and/or other materials provided with the | |
* distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE | |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
******************************************************************************/ | |
/* | |
* List definitions. | |
*/ | |
#define ql_head(a_type) \ | |
struct { \ | |
a_type *qlh_first; \ | |
} | |
#define ql_head_initializer(a_head) {NULL} | |
#define ql_elm(a_type) qr(a_type) | |
/* List functions. */ | |
#define ql_new(a_head) do { \ | |
(a_head)->qlh_first = NULL; \ | |
} while (0) | |
#define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field) | |
#define ql_first(a_head) ((a_head)->qlh_first) | |
#define ql_last(a_head, a_field) \ | |
((ql_first(a_head) != NULL) \ | |
? qr_prev(ql_first(a_head), a_field) : NULL) | |
#define ql_next(a_head, a_elm, a_field) \ | |
((ql_last(a_head, a_field) != (a_elm)) \ | |
? qr_next((a_elm), a_field) : NULL) | |
#define ql_prev(a_head, a_elm, a_field) \ | |
((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field) \ | |
: NULL) | |
#define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do { \ | |
qr_before_insert((a_qlelm), (a_elm), a_field); \ | |
if (ql_first(a_head) == (a_qlelm)) { \ | |
ql_first(a_head) = (a_elm); \ | |
} \ | |
} while (0) | |
#define ql_after_insert(a_qlelm, a_elm, a_field) \ | |
qr_after_insert((a_qlelm), (a_elm), a_field) | |
#define ql_head_insert(a_head, a_elm, a_field) do { \ | |
if (ql_first(a_head) != NULL) { \ | |
qr_before_insert(ql_first(a_head), (a_elm), a_field); \ | |
} \ | |
ql_first(a_head) = (a_elm); \ | |
} while (0) | |
#define ql_tail_insert(a_head, a_elm, a_field) do { \ | |
if (ql_first(a_head) != NULL) { \ | |
qr_before_insert(ql_first(a_head), (a_elm), a_field); \ | |
} \ | |
ql_first(a_head) = qr_next((a_elm), a_field); \ | |
} while (0) | |
#define ql_remove(a_head, a_elm, a_field) do { \ | |
if (ql_first(a_head) == (a_elm)) { \ | |
ql_first(a_head) = qr_next(ql_first(a_head), a_field); \ | |
} \ | |
if (ql_first(a_head) != (a_elm)) { \ | |
qr_remove((a_elm), a_field); \ | |
} else { \ | |
ql_first(a_head) = NULL; \ | |
} \ | |
} while (0) | |
#define ql_head_remove(a_head, a_type, a_field) do { \ | |
a_type *t = ql_first(a_head); \ | |
ql_remove((a_head), t, a_field); \ | |
} while (0) | |
#define ql_tail_remove(a_head, a_type, a_field) do { \ | |
a_type *t = ql_last(a_head, a_field); \ | |
ql_remove((a_head), t, a_field); \ | |
} while (0) | |
#define ql_foreach(a_var, a_head, a_field) \ | |
qr_foreach((a_var), ql_first(a_head), a_field) | |
#define ql_reverse_foreach(a_var, a_head, a_field) \ | |
qr_reverse_foreach((a_var), ql_first(a_head), a_field) | |