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defun-int.h
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1996-09-28
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// defun-int.h -*- C++ -*-
/*
Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton
This file is part of Octave.
Octave 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.
Octave 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 Octave; see the file COPYING. If not, write to the Free
Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined (octave_defun_int_h)
#define octave_defun_int_h 1
// MAKE_BUILTINS is defined to extract function names and related
// information and create the *.def files that are eventually used to
// create the buitlins.cc file.
#ifdef MAKE_BUILTINS
// Generate code to install name in the symbol table. The script
// mkdefs will create a .def file for every .cc file that uses DEFUN,
// DEFUN_TEXT, or DEFUN_DLD.
#define DEFUN_INTERNAL(name, fname, sname, nargin_max, nargout_max, \
is_text_fcn, doc) \
BEGIN_INSTALL_BUILTIN \
extern DECLARE_FUN (fname); \
DEFINE_FUN_STRUCT (name, fname, sname, nargin_max, nargout_max, \
is_text_fcn, doc); \
install_builtin_function (&sname); \
END_INSTALL_BUILTIN
// Generate code for making another name for an existing function.
#define DEFALIAS_INTERNAL(alias, name) \
BEGIN_INSTALL_BUILTIN \
alias_builtin (#alias, #name); \
END_INSTALL_BUILTIN
#else /* ! MAKE_BUILTINS */
// Generate the first line of the function definition. This ensures
// that the internal functions all have the same signature.
#define DEFUN_INTERNAL(name, fname, sname, nargin_max, nargout_max, \
is_text_fcn, doc) \
DECLARE_FUN (fname)
// No definition is required for an alias.
#define DEFALIAS_INTERNAL(name, alias)
#endif /* ! MAKE_BUILTINS */
// Define the structure that will be used to insert this function into
// the symbol table.
#define DEFINE_FUN_STRUCT(name, fname, sname, nargin_max, \
nargout_max, is_text_fcn, doc) \
static builtin_function sname = \
{ name, nargin_max, nargout_max, is_text_fcn, fname, doc }
#define DEFINE_FUN_STRUCT_FUN(sname, fsname) \
builtin_function * \
fsname (void) \
{ \
return &sname; \
}
// Declare an internal function named fname. This is the interface
// used by all internal functions in Octave that are also callable
// from the Octave language.
#define DECLARE_FUN(fname) \
Octave_object \
fname (const Octave_object& args, int nargout)
// XXX FIXME XXX -- eliminate the need for these in the functions that
// use them?
#define DEFINE_ARGV(fcn_name) \
int argc = args.length () + 1; \
int save_argc = argc; \
char **argv = make_argv (args, fcn_name); \
char **save_argv = argv; \
if (error_state) \
return retval
#define DELETE_ARGV \
do \
{ \
while (--save_argc >= 0) \
delete [] save_argv[save_argc]; \
delete [] save_argv; \
} \
while (0)
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; page-delimiter: "^/\\*" ***
;;; End: ***
*/