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-rw-r--r--libguile/throw.h99
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diff --git a/libguile/throw.h b/libguile/throw.h
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+++ b/libguile/throw.h
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+#ifndef SCM_THROW_H
+#define SCM_THROW_H
+
+/* Copyright 1995-1996,1998,2000,2006,2008,2010,2014,2017-2018
+ 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"
+
+
+
+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 */