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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* custom - interface for custom software and hardware interfaces
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*
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* Copyright (C) 1999-2007,2021,2023 Landon Curt Noll
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Under source code control: 1997/03/03 04:53:08
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* File existed as early as: 1997
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*
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* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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/*
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* Be careful what you put in this file, upper .c files include
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* this file even when CUSTOM is not defined (ALLOW_CUSTOM="-UCUSTOM").
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*
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* Don't include anything, let the including .c file bring in:
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*
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* have_const.h
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* value.h
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*
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* before they include this file.
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*
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* Keep this file down to a minimum. Don't put custom builtin function
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* stuff in this file!
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*/
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#if !defined(CUSTOM_H)
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#define CUSTOM_H
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/*
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* arg count definitions
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*/
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#define MAX_CUSTOM_ARGS 100 /* maximum number of custom arguments */
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/*
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* register count
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*/
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#define CUSTOM_REG_MAX 31 /* maximum custom register number */
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/*
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* custom function interface
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*/
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struct custom {
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char *name; /* name of the custom builtin */
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char *desc; /* very brief description of custom builtin */
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short minargs; /* minimum number of arguments */
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short maxargs; /* maximum number of arguments */
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VALUE (*func)(char *name, int argc, VALUE **argv); /* custom func */
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};
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/*
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* external declarations
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*
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* These are the required interfaces. The dummy.c stubs these interfaces too.
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*/
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E_FUNC bool custom_compiled(void); /* return true if libcustcalc compiled CUSTOM defined, false otherwise */
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E_FUNC VALUE custom(char*, int, VALUE**); /* master custom interface */
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EXTERN bool allow_custom; /* true => custom builtins allowed */
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E_FUNC void showcustom(void); /* print custom functions */
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E_FUNC void customhelp(char *); /* direct custom help */
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E_FUNC void init_custreg(void); /* initialize custom registers */
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#endif /* !CUSTOM_H */
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