1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* Copyright 2009-2015
* Kaz Kylheku <kaz@kylheku.com>
* Vancouver, Canada
* All rights reserved.
*
* Redistribution of this software in source and binary forms, with or without
* modification, is permitted provided that the following two conditions are met.
*
* Use of this software in any manner constitutes agreement with the disclaimer
* which follows the two conditions.
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DAMAGES, HOWEVER CAUSED,
* AND UNDER ANY THEORY OF LIABILITY, ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
struct args {
cnum argc;
cnum fill;
val list;
val arg[1];
};
typedef int arg_index;
#define ARGS_MAX 1024
#define args_alloc(N) \
(coerce(struct args *, \
alloca(offsetof(struct args, arg) + (N)*sizeof (val))))
cnum args_limit(val name, cnum in);
INLINE void args_init(struct args *args, cnum argc)
{
args->argc = argc;
args->fill = 0;
args->list = nil;
}
INLINE void args_init_list(struct args *args, cnum argc, val list)
{
args->argc = argc;
args->fill = 0;
args->list = list;
}
INLINE val args_add(struct args *args, val arg)
{
return args->arg[args->fill++] = arg;
}
void args_add_list(struct args *args, val list);
val args_add_checked(val name, struct args *args, val arg);
INLINE int args_more(struct args *args, cnum index)
{
return index < args->fill;
}
INLINE val args_get_list(struct args *args)
{
extern val args_cons_list(struct args *args);
return (args->fill == 0 || args->list) ? args->list : args_cons_list(args);
}
INLINE val args_get(struct args *args, cnum *arg_index)
{
return args->arg[(*arg_index)++];
}
val args_get_checked(val name, struct args *args, cnum *arg_index);
|
