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
84
85
86
87
88
89
|
#ifndef SCM_THROW_H
#define SCM_THROW_H
/* Copyright 1995-1996,1998,2000,2006,2008,2010,2014,2017-2019
Free Software Foundation, Inc.
This file is part of Guile.
Guile is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Guile 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include "libguile/scm.h"
#include "libguile/exceptions.h"
typedef scm_t_thunk scm_t_catch_body;
typedef SCM (*scm_t_catch_handler) (void *data,
SCM tag, SCM throw_args);
SCM_INTERNAL SCM scm_i_make_catch_handler (scm_t_catch_handler h, void *data);
SCM_API SCM scm_c_catch (SCM tag,
scm_t_catch_body body,
void *body_data,
scm_t_catch_handler handler,
void *handler_data,
scm_t_catch_handler pre_unwind_handler,
void *pre_unwind_handler_data);
SCM_API SCM scm_c_with_throw_handler (SCM tag,
scm_t_catch_body body,
void *body_data,
scm_t_catch_handler handler,
void *handler_data,
int lazy_catch_p);
SCM_API SCM scm_internal_catch (SCM tag,
scm_t_catch_body body,
void *body_data,
scm_t_catch_handler handler,
void *handler_data);
/* The first argument to scm_body_thunk should be a pointer to one of
these. See the implementation of catch in throw.c. */
struct scm_body_thunk_data
{
/* The tag being caught. We only use it to figure out what
arguments to pass to the body procedure; see scm_catch_thunk_body for
details. */
SCM tag;
/* The Scheme procedure object constituting the catch body.
scm_body_by_proc invokes this. */
SCM body_proc;
};
SCM_API SCM scm_body_thunk (void *);
SCM_API SCM scm_handle_by_proc (void *, SCM, SCM);
SCM_API SCM scm_handle_by_proc_catching_all (void *, SCM, SCM);
SCM_API SCM scm_handle_by_message (void *, SCM, SCM);
SCM_API SCM scm_handle_by_message_noexit (void *, SCM, SCM);
SCM_API SCM scm_handle_by_throw (void *, SCM, SCM);
SCM_API int scm_exit_status (SCM args);
SCM_API SCM scm_catch_with_pre_unwind_handler (SCM tag, SCM thunk, SCM handler, SCM lazy_handler);
SCM_API SCM scm_catch (SCM tag, SCM thunk, SCM handler);
SCM_API SCM scm_with_throw_handler (SCM tag, SCM thunk, SCM handler);
SCM_API SCM scm_ithrow (SCM key, SCM args, int no_return) SCM_NORETURN;
SCM_API SCM scm_throw (SCM key, SCM args) SCM_NORETURN;
SCM_INTERNAL void scm_init_throw (void);
#endif /* SCM_THROW_H */
|
