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/* 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.
*/
#include <stddef.h>
#include <setjmp.h>
#include <signal.h>
#include "config.h"
#include "lib.h"
#include "signal.h"
#include "unwind.h"
#include ALLOCA_H
#include "args.h"
val args_cons_list(struct args *args);
cnum args_limit(val name, cnum in)
{
if (in <= ARGS_MAX)
return in;
uw_throwf(assert_s, lit("~a: too many trailing arguments (limit is ~s)"),
name, num(ARGS_MAX), nao);
}
void args_add_list(struct args *args, val list)
{
for (; list; list = cdr(list))
args_add(args, car(list));
}
val args_add_checked(val name, struct args *args, val arg)
{
if (args->fill >= args->argc)
uw_throwf(assert_s, lit("~a: argument list size exceeded"), name, nao);
return args_add(args, arg);
}
val args_cons_list(struct args *args)
{
cnum i;
list_collect_decl (out, ptail);
for (i = 0; i < args->argc; i++)
ptail = list_collect(ptail, args->arg[i]);
return args->list = out;
}
val args_get_checked(val name, struct args *args, cnum *arg_index)
{
if (args->fill == 0 && args->list)
args_add_list(args, args->list);
if (*arg_index >= args->fill)
uw_throwf(assert_s, lit("~a: insufficient arguments"), name, nao);
return args_get(args, arg_index);
}
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