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annotate src/DLD-FUNCTIONS/__dispatch__.cc @ 11226:16d744cce38c

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deprecate the dispatch function
author John W. Eaton <jwe@octave.org>
date Wed, 10 Nov 2010 16:04:31 -0500
parents src/DLD-FUNCTIONS/dispatch.cc@8d8e10058df6
children fd0a3ac60b0e
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1 /*
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2
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eb63fbe60fab update copyright notices
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3 Copyright (C) 2001, 2005, 2006, 2007, 2008, 2009
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4 John W. Eaton and Paul Kienzle
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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 3 of the License, or (at your
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11 option) any 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, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 #include <list>
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29 #include <map>
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30 #include <string>
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31
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32 #include "Cell.h"
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33 #include "oct-map.h"
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34 #include "defun-dld.h"
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35 #include "ov.h"
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36 #include "ov-fcn.h"
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37 #include "ov-typeinfo.h"
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38 #include "pager.h"
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39 #include "parse.h"
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40 #include "symtab.h"
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41 #include "variables.h"
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42
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43 DEFUN_DLD (__dispatch__, args, nargout,
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44 "Undocumented internal function")
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45 {
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46 octave_value retval;
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47
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48 int nargin = args.length ();
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49
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50 std::string f, r, t;
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51
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52 if (nargin > 0 && nargin < 4)
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53 {
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54 if (nargin > 0)
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55 {
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56 f = args(0).string_value ();
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57
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58 if (error_state)
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59 {
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60 error ("__dispatch__: expecting first argument to be function name");
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61 return retval;
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62 }
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63 }
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64
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65 if (nargin > 1)
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66 {
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67 r = args(1).string_value ();
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68
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69 if (error_state)
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70 {
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71 error ("__dispatch__: expecting second argument to be function name");
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72 return retval;
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73 }
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74 }
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75
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76 if (nargin > 2)
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77 {
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78 t = args(2).string_value ();
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79
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80 if (error_state)
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81 {
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82 error ("__dispatch__: expecting third argument to be type name");
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83 return retval;
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84 }
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85 }
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86
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87 if (nargin == 1)
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88 {
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89 if (nargout > 0)
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90 {
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91 symbol_table::fcn_info::dispatch_map_type dm
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92 = symbol_table::get_dispatch (f);
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93
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94 size_t len = dm.size ();
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95
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96 Cell type_field (len, 1);
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97 Cell name_field (len, 1);
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98
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99 symbol_table::fcn_info::dispatch_map_type::const_iterator p
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100 = dm.begin ();
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101
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102 for (size_t i = 0; i < len; i++)
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103 {
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104 type_field(i) = p->first;
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105 name_field(i) = p->second;
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106
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107 p++;
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108 }
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109
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110 octave_scalar_map m;
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111
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112 m.assign ("type", type_field);
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113 m.assign ("name", name_field);
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114
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115 retval = m;
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116 }
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117 else
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118 symbol_table::print_dispatch (octave_stdout, f);
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119 }
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120 else if (nargin == 2)
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121 {
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122 t = r;
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123 symbol_table::clear_dispatch (f, t);
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124 }
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125 else
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126 symbol_table::add_dispatch (f, t, r);
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127 }
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128 else
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129 print_usage ();
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130
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131 return retval;
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132 }