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1 // defun-int.h -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_defun_int_h) |
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25 #define octave_defun_int_h 1 |
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26 |
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27 // MAKE_BUILTINS is defined to extract function names and related |
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28 // information and create the *.def files that are eventually used to |
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29 // create the buitlins.cc file. |
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30 |
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31 #ifdef MAKE_BUILTINS |
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32 |
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33 // Generate code to install name in the symbol table. The script |
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34 // mkdefs will create a .def file for every .cc file that uses DEFUN, |
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35 // DEFUN_TEXT, or DEFUN_DLD. |
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36 |
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37 #define DEFUN_INTERNAL(name, fname, sname, nargin_max, nargout_max, \ |
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38 is_text_fcn, doc) \ |
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39 BEGIN_INSTALL_BUILTIN \ |
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40 extern DECLARE_FUN (fname); \ |
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41 DEFINE_FUN_STRUCT (name, fname, sname, nargin_max, nargout_max, \ |
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42 is_text_fcn, doc); \ |
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43 install_builtin_function (&sname); \ |
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44 END_INSTALL_BUILTIN |
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45 |
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46 // Generate code for making another name for an existing function. |
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47 |
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48 #define DEFALIAS_INTERNAL(alias, name) \ |
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49 BEGIN_INSTALL_BUILTIN \ |
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50 alias_builtin (#alias, #name); \ |
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51 END_INSTALL_BUILTIN |
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52 |
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53 #else /* ! MAKE_BUILTINS */ |
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54 |
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55 // Generate the first line of the function definition. This ensures |
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56 // that the internal functions all have the same signature. |
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57 |
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58 #define DEFUN_INTERNAL(name, fname, sname, nargin_max, nargout_max, \ |
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59 is_text_fcn, doc) \ |
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60 DECLARE_FUN (fname) |
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61 |
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62 // No definition is required for an alias. |
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63 |
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64 #define DEFALIAS_INTERNAL(name, alias) |
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65 |
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66 #endif /* ! MAKE_BUILTINS */ |
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67 |
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68 // Define the structure that will be used to insert this function into |
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69 // the symbol table. |
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70 |
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71 #define DEFINE_FUN_STRUCT(name, fname, sname, nargin_max, \ |
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72 nargout_max, is_text_fcn, doc) \ |
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73 static builtin_function sname = \ |
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74 { name, nargin_max, nargout_max, is_text_fcn, fname, doc } |
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75 |
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76 #define DEFINE_FUN_STRUCT_FUN(sname, fsname) \ |
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77 builtin_function * \ |
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78 fsname (void) \ |
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79 { \ |
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80 return &sname; \ |
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81 } |
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82 |
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83 // Declare an internal function named fname. This is the interface |
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84 // used by all internal functions in Octave that are also callable |
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85 // from the Octave language. |
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86 |
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87 #define DECLARE_FUN(fname) \ |
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88 Octave_object \ |
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89 fname (const Octave_object& args, int nargout) |
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90 |
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91 // XXX FIXME XXX -- eliminate the need for these in the functions that |
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92 // use them? |
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93 |
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94 #define DEFINE_ARGV(fcn_name) \ |
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95 int argc = args.length () + 1; \ |
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96 int save_argc = argc; \ |
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97 char **argv = make_argv (args, fcn_name); \ |
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98 char **save_argv = argv; \ |
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99 if (error_state) \ |
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100 return retval |
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101 |
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102 #define DELETE_ARGV \ |
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103 do \ |
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104 { \ |
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105 while (--save_argc >= 0) \ |
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106 delete [] save_argv[save_argc]; \ |
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107 delete [] save_argv; \ |
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108 } \ |
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109 while (0) |
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110 |
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111 #endif |
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112 |
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113 /* |
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114 ;;; Local Variables: *** |
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115 ;;; mode: C++ *** |
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116 ;;; page-delimiter: "^/\\*" *** |
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117 ;;; End: *** |
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118 */ |
