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
|
/* This file is part of Gamma.
Copyright (C) 2010 Sergey Poznyakoff
Gamma is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
Gamma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Gamma. If not, see <http://www.gnu.org/licenses/>. */
#include "gamma-expat.h"
/* General-purpose eval handlers */
SCM
gamma_eval_catch_body(void *list)
{
return scm_primitive_eval((SCM)list);
}
static SCM
eval_catch_handler (void *data, SCM tag, SCM throw_args)
{
scm_handle_by_message_noexit("gamma", tag, throw_args);
longjmp(*(jmp_buf*)data, 1);
}
struct scheme_exec_data {
SCM (*handler) (void *data);
void *data;
SCM result;
};
static SCM
scheme_safe_exec_body (void *data)
{
struct scheme_exec_data *ed = data;
ed->result = ed->handler(ed->data);
return SCM_BOOL_F;
}
int
gamma_safe_exec(SCM (*handler) (void *data), void *data, SCM *result)
{
jmp_buf jmp_env;
struct scheme_exec_data ed;
if (setjmp(jmp_env))
exit(70); /* EX_SOFTWARE */
ed.handler = handler;
ed.data = data;
scm_internal_lazy_catch(SCM_BOOL_T,
scheme_safe_exec_body, (void*)&ed,
eval_catch_handler, &jmp_env);
if (result)
*result = ed.result;
return 0;
}
char *
gamma_proc_name(SCM proc)
{
return scm_to_locale_string(
scm_symbol_to_string(scm_procedure_name(proc)));
}
|