5 /* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this software; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20 * Boston, MA 02111-1307 USA
22 * As a special exception, the Free Software Foundation gives permission
23 * for additional uses of the text contained in its release of GUILE.
25 * The exception is that, if you link the GUILE library with other files
26 * to produce an executable, this does not by itself cause the
27 * resulting executable to be covered by the GNU General Public License.
28 * Your use of that executable is in no way restricted on account of
29 * linking the GUILE library code into it.
31 * This exception does not however invalidate any other reasons why
32 * the executable file might be covered by the GNU General Public License.
34 * This exception applies only to the code released by the
35 * Free Software Foundation under the name GUILE. If you copy
36 * code from other Free Software Foundation releases into a copy of
37 * GUILE, as the General Public License permits, the exception does
38 * not apply to the code that you add in this way. To avoid misleading
39 * anyone as to the status of such modified files, you must delete
40 * this exception notice from them.
42 * If you write modifications of your own for GUILE, it is your choice
43 * whether to permit this exception to apply to your modifications.
44 * If you do not wish that, delete this exception notice. */
47 #include "libguile/__scm.h"
51 typedef SCM (*scm_catch_body_t
) (void *data
);
52 typedef SCM (*scm_catch_handler_t
) (void *data
,
53 SCM tag
, SCM throw_args
);
55 extern SCM
scm_internal_catch (SCM tag
,
56 scm_catch_body_t body
,
58 scm_catch_handler_t handler
,
61 extern SCM
scm_internal_lazy_catch (SCM tag
,
62 scm_catch_body_t body
,
64 scm_catch_handler_t handler
,
67 extern SCM
scm_internal_stack_catch (SCM tag
,
68 scm_catch_body_t body
,
70 scm_catch_handler_t handler
,
73 /* The first argument to scm_body_thunk should be a pointer to one of
74 these. See the implementation of catch in throw.c. */
75 struct scm_body_thunk_data
77 /* The tag being caught. We only use it to figure out what
78 arguments to pass to the body procedure; see scm_catch_thunk_body for
82 /* The Scheme procedure object constituting the catch body.
83 scm_body_by_proc invokes this. */
87 extern SCM
scm_body_thunk (void *);
90 extern SCM
scm_handle_by_proc (void *, SCM
, SCM
);
91 extern SCM
scm_handle_by_proc_catching_all (void *, SCM
, SCM
);
92 extern SCM
scm_handle_by_message (void *, SCM
, SCM
);
93 extern SCM
scm_handle_by_message_noexit (void *, SCM
, SCM
);
94 extern SCM
scm_handle_by_throw (void *, SCM
, SCM
);
95 extern int scm_exit_status (SCM args
);
97 extern SCM
scm_catch (SCM tag
, SCM thunk
, SCM handler
);
98 extern SCM
scm_lazy_catch (SCM tag
, SCM thunk
, SCM handler
);
99 extern SCM
scm_ithrow (SCM key
, SCM args
, int noreturn
);
101 extern SCM
scm_throw (SCM key
, SCM args
);
102 extern void scm_init_throw (void);