1 /*** seq.c -- generic sequence service
3 * Copyright (C) 2008 Sebastian Freundt
5 * Author: Sebastian Freundt <hroptatyr@sxemacs.org>
7 * This file is part of SXEmacs.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the author nor the names of any contributors
21 * may be used to endorse or promote products derived from this
22 * software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 /* an error throwing seq impl */
46 seq_unsupp_length(const seq_t s)
48 Lisp_Object sequence = (Lisp_Object)(long int)s;
49 check_losing_bytecode("length", sequence);
50 sequence = wrong_type_argument(Qsequencep, sequence);
55 seq_empty_length(const seq_t s)
60 static struct seq_impl_s __seq_unsupp = {
61 .length_f = seq_unsupp_length,
64 static struct seq_impl_s __seq_empty = {
65 .length_f = seq_empty_length,
68 seq_impl_t seq_unsupp = &__seq_unsupp;
69 seq_impl_t seq_empty = &__seq_empty;
72 /* we are smart, we use the names desired by libtool, making a module out of
73 this one day is easier than peeing^Wbreathing */
78 Fprovide(intern("seq"));
89 Frevoke(intern("seq"));