annotate scripts/miscellaneous/methods.m @ 30564:796f54d4ddbf stable

update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents 363fb10055df
children 597f3ee61a48
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2012-2022 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {} methods (@var{obj})
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28 ## @deftypefnx {} {} methods ("@var{classname}")
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29 ## @deftypefnx {} {} methods (@dots{}, "-full")
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30 ## @deftypefnx {} {@var{mtds} =} methods (@dots{})
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31 ## List the names of the public methods for the object @var{obj} or the
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32 ## named class @var{classname}.
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33 ##
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34 ## @var{obj} may be an Octave class object or a Java object.
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35 ## @var{classname} may be the name of an Octave class or a Java class.
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36 ##
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37 ## If the optional argument @qcode{"-full"} is given then Octave returns
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38 ## full method signatures which include output type, name of method,
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39 ## and the number and type of inputs.
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40 ##
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41 ## When called with no output arguments, @code{methods} prints the list of
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42 ## method names to the screen. Otherwise, the output argument @var{mtds}
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43 ## contains the list in a cell array of strings.
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44 ## @seealso{ismethod, properties, fieldnames}
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45 ## @end deftypefn
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46
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47 function mtds = methods (obj, fullopt)
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48
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49 if (nargin < 1)
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50 print_usage ();
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51 endif
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52
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53 havesigs = false;
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54 showsigs = false;
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55 if (nargin == 2)
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56 if (! strcmp (fullopt, "-full"))
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57 error ("methods: invalid option");
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58 endif
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59 showsigs = true;
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60 endif
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61
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62 if (isobject (obj))
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63 ## Call internal C++ function for Octave objects
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64 mtds_list = __methods__ (obj);
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65 elseif (ischar (obj))
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66 ## Could be a classname for an Octave class or Java class.
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67 ## Try Octave class first.
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68 mtds_list = __methods__ (obj);
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69 if (isempty (mtds_list))
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70 mtds_str = javaMethod ("getMethods", "org.octave.ClassHelper", obj);
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71 mtds_list = ostrsplit (mtds_str, ';');
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72 mtds_list = mtds_list(:); # return a column vector for compatibility
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73 havesigs = true;
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74 endif
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75 elseif (isjava (obj))
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76 ## If obj is a String or a subclass of String, then get the methods of its
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77 ## class name, not the methods of the class that may be named by the
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78 ## content of the string.
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79 if (isa (obj, "java.lang.String"))
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80 klass = class (obj);
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81 mtds_str = javaMethod ("getMethods", "org.octave.ClassHelper", klass);
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82 else
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83 mtds_str = javaMethod ("getMethods", "org.octave.ClassHelper", obj);
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84 endif
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85 mtds_list = strsplit (mtds_str, ';');
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86 mtds_list = mtds_list(:); # return a column vector for compatibility
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87 havesigs = true;
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88 else
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89 error ("methods: invalid input argument");
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90 endif
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91
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92 if (havesigs && ! showsigs)
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93 ## Extract only the method name for ordinary class methods, delete the
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94 ## return type and the argument list.
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95 mtds_list = regexprep (mtds_list, '^(?:[^(]+) (\w+) ?\(.*$', '$1');
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96
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97 ## Extract only the class name for class constructors, delete the optional
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98 ## "org.example." package prefix and the argument list.
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99 mtds_list = regexprep (mtds_list, '^(?:[\.\w]+\.)?(\w+) ?\(.*$', '$1');
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100
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101 mtds_list = unique (mtds_list);
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102 else
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103 ## Delete the "org.example." package prefix if present.
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104 mtds_list = regexprep (mtds_list, '^(?:[\.\w]+\.)(\w+ ?\(.*)$', '$1');
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105 endif
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106
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107 if (nargout == 0)
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108 classname = ifelse (ischar (obj), obj, class (obj));
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109 printf ("Methods for class %s:\n", classname);
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110 disp (list_in_columns (mtds_list));
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111 else
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112 mtds = mtds_list;
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113 endif
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114
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115 endfunction
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116
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117
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118 ## test old-style @classname
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119 %!test
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120 %! mtds = methods ("ftp");
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121 %! assert (mtds{1}, "ascii");
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122
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123 ## test Java classname
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124 %!testif HAVE_JAVA; usejava ("jvm")
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125 %! mtds = methods ("java.lang.Double");
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126 %! search = strfind (mtds, "valueOf");
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127 %! assert (! isempty ([search{:}]));
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128
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129 ## test Java classname with -full prototypes
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130 %!testif HAVE_JAVA; usejava ("jvm")
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131 %! mtds = methods ("java.lang.Double", "-full");
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132 %! search = strfind (mtds, "java.lang.Double valueOf");
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133 %! assert (! isempty ([search{:}]));
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134
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135 ## test that methods does the right thing when passed a String object
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136 %!testif HAVE_JAVA; usejava ("jvm") <*48758>
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137 %! object = javaObject ("java.lang.String", "java.lang.Integer");
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138 %! assert (methods (object), methods ("java.lang.String"));
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139
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140 ## test classdef classname
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141 %!assert (methods ("inputParser"),
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142 %! {"addOptional"; "addParamValue"; "addParameter";
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143 %! "addRequired"; "addSwitch"; "add_missing"; "delete";
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144 %! "disp"; "error"; "is_argname"; "parse"; "validate_arg";
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145 %! "validate_name"});
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146
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147 ## Test input validation
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148 %!error <Invalid call> methods ()
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149 %!error methods ("a", "b", "c")
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150 %!error <invalid option> methods ("ftp", "option1")
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151 %!error <invalid input argument> methods (1)