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/* classes: h_files */
#ifndef THROWH
#define THROWH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include "libguile/__scm.h"
typedef SCM (*scm_catch_body_t) SCM_P ((void *data));
typedef SCM (*scm_catch_handler_t) SCM_P ((void *data,
SCM tag, SCM throw_args));
extern SCM scm_internal_catch SCM_P ((SCM tag,
scm_catch_body_t body,
void *body_data,
scm_catch_handler_t handler,
void *handler_data));
extern SCM scm_internal_lazy_catch SCM_P ((SCM tag,
scm_catch_body_t body,
void *body_data,
scm_catch_handler_t handler,
void *handler_data));
extern SCM scm_internal_stack_catch SCM_P ((SCM tag,
scm_catch_body_t body,
void *body_data,
scm_catch_handler_t 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;
};
extern SCM scm_body_thunk SCM_P ((void *));
extern SCM scm_handle_by_proc SCM_P ((void *, SCM, SCM));
extern SCM scm_handle_by_proc_catching_all SCM_P ((void *, SCM, SCM));
extern SCM scm_handle_by_message SCM_P ((void *, SCM, SCM));
extern SCM scm_handle_by_message_noexit SCM_P ((void *, SCM, SCM));
extern int scm_exit_status SCM_P ((SCM args));
extern SCM scm_catch SCM_P ((SCM tag, SCM thunk, SCM handler));
extern SCM scm_lazy_catch SCM_P ((SCM tag, SCM thunk, SCM handler));
extern SCM scm_ithrow SCM_P ((SCM key, SCM args, int noreturn));
extern SCM scm_throw SCM_P ((SCM key, SCM args));
extern void scm_init_throw SCM_P ((void));
#endif /* THROWH */
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