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791eb0c01a
As the FSF advises, 'There is no legal significance to using the three-character sequence “(C)”, but it does no harm.' It does take up space though! For that reason, we remove it here from our C files.
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
#ifndef SCM_CHOOKS_H
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#define SCM_CHOOKS_H
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/* Copyright 1995-1996,1999,2000-2001,2006,2008-2009,2018
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* Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "libguile/scm.h"
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/*
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* C level hooks
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*/
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/*
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* The interface is designed for and- and or-type hooks which
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* both may want to indicate success/failure and return a result.
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*/
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typedef enum scm_t_c_hook_type {
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SCM_C_HOOK_NORMAL,
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SCM_C_HOOK_OR,
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SCM_C_HOOK_AND
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} scm_t_c_hook_type;
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typedef void *(*scm_t_c_hook_function) (void *hook_data,
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void *fn_data,
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void *data);
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typedef struct scm_t_c_hook_entry {
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struct scm_t_c_hook_entry *next;
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scm_t_c_hook_function func;
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void *data;
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} scm_t_c_hook_entry;
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typedef struct scm_t_c_hook {
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scm_t_c_hook_entry *first;
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scm_t_c_hook_type type;
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void *data;
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} scm_t_c_hook;
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SCM_API void scm_c_hook_init (scm_t_c_hook *hook,
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void *hook_data,
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scm_t_c_hook_type type);
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SCM_API void scm_c_hook_add (scm_t_c_hook *hook,
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scm_t_c_hook_function func,
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void *fn_data,
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int appendp);
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SCM_API void scm_c_hook_remove (scm_t_c_hook *hook,
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scm_t_c_hook_function func,
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void *fn_data);
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SCM_API void *scm_c_hook_run (scm_t_c_hook *hook, void *data);
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#endif /* SCM_CHOOKS_H */
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