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#ifndef SCM_THROW_H
#define SCM_THROW_H
/* Copyright (C) 1995-1996,1998,2000,2006,2008,2010,2014,2017-2018
* Free Software Foundation, Inc.
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "libguile/__scm.h"
typedef SCM (*scm_t_catch_body) (void *data);
typedef SCM (*scm_t_catch_handler) (void *data,
SCM tag, SCM throw_args);
SCM_INTERNAL SCM scm_i_make_catch_body_closure (scm_t_catch_body body,
void *body_data);
SCM_INTERNAL SCM scm_i_make_catch_handler_closure (scm_t_catch_handler h,
void *handler_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;
/* This throws to the `stack-overflow' key, without running pre-unwind
handlers. */
SCM_API void scm_report_stack_overflow (void);
/* This throws to the `out-of-memory' key, without running pre-unwind
handlers. */
SCM_API void scm_report_out_of_memory (void);
SCM_API SCM scm_throw (SCM key, SCM args) SCM_NORETURN;
SCM_INTERNAL void scm_init_throw (void);
#endif /* SCM_THROW_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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