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1 // variables.cc -*- C++ -*- |
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2 /* |
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3 |
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1009
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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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1192
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25 #include <config.h> |
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26 #endif |
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27 |
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1343
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28 #include <cfloat> |
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1468
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29 #include <cstdio> |
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1343
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30 #include <cstring> |
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31 |
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1350
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32 #include <strstream.h> |
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33 |
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34 #ifdef HAVE_UNISTD_H |
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35 #include <sys/types.h> |
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36 #include <unistd.h> |
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37 #endif |
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38 |
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1465
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39 #include <readline/readline.h> |
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40 |
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41 #include "fnmatch.h" |
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42 |
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605
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43 #include "defaults.h" |
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1352
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44 #include "defun.h" |
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45 #include "dirfns.h" |
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704
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46 #include "dynamic-ld.h" |
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1352
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47 #include "error.h" |
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48 #include "help.h" |
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49 #include "input.h" |
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50 #include "lex.h" |
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51 #include "oct-obj.h" |
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581
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52 #include "octave-hist.h" |
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529
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53 #include "octave.h" |
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605
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54 #include "pager.h" |
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1352
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55 #include "parse.h" |
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56 #include "statdefs.h" |
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57 #include "symtab.h" |
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58 #include "sysdep.h" |
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59 #include "tree-base.h" |
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60 #include "tree-const.h" |
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61 #include "tree-expr.h" |
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62 #include "unwind-prot.h" |
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63 #include "user-prefs.h" |
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64 #include "utils.h" |
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1352
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65 #include "variables.h" |
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66 #include "version.h" |
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529
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67 |
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68 // Symbol table for symbols at the top level. |
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581
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69 symbol_table *top_level_sym_tab = 0; |
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70 |
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71 // Symbol table for the current scope. |
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72 symbol_table *curr_sym_tab = 0; |
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73 |
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74 // Symbol table for global symbols. |
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581
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75 symbol_table *global_sym_tab = 0; |
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76 |
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593
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77 // Initialization. |
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78 |
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79 // Create the initial symbol tables and set the current scope at the |
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80 // top level. |
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81 |
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195
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82 void |
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83 initialize_symbol_tables (void) |
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84 { |
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581
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85 if (! global_sym_tab) |
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86 global_sym_tab = new symbol_table (); |
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195
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87 |
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581
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88 if (! top_level_sym_tab) |
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89 top_level_sym_tab = new symbol_table (); |
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195
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90 |
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91 curr_sym_tab = top_level_sym_tab; |
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92 } |
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93 |
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593
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94 // Attributes of variables and functions. |
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95 |
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96 // Is this variable a builtin? |
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97 |
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98 int |
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99 is_builtin_variable (const char *name) |
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100 { |
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101 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
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102 return (sr && sr->is_builtin_variable ()); |
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103 } |
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104 |
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105 // Is this a text-style function? |
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106 |
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107 int |
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108 is_text_function_name (const char *s) |
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109 { |
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110 symbol_record *sr = global_sym_tab->lookup (s); |
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111 return (sr && sr->is_text_function ()); |
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112 } |
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113 |
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114 // Is this function globally in this scope? |
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115 |
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116 int |
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593
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117 is_globally_visible (const char *name) |
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118 { |
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119 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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120 return (sr && sr->is_linked_to_global ()); |
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121 } |
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122 |
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123 // Is this tree_constant a valid function? |
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124 |
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125 tree_fvc * |
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126 is_valid_function (const tree_constant& arg, char *warn_for, int warn) |
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127 { |
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128 tree_fvc *ans = 0; |
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129 |
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1363
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130 const char *fcn_name = arg.string_value (); |
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636
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131 |
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132 if (error_state) |
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593
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133 { |
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134 if (warn) |
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135 error ("%s: expecting function name as argument", warn_for); |
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136 return ans; |
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137 } |
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138 |
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139 symbol_record *sr = 0; |
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140 if (fcn_name) |
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141 sr = lookup_by_name (fcn_name); |
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142 |
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143 if (sr) |
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144 ans = sr->def (); |
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145 |
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146 if (! sr || ! ans || ! sr->is_function ()) |
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147 { |
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148 if (warn) |
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149 error ("%s: the symbol `%s' is not valid as a function", |
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150 warn_for, fcn_name); |
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151 ans = 0; |
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152 } |
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153 |
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154 return ans; |
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155 } |
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156 |
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157 // Does this function take the right number of arguments? |
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158 |
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159 int |
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160 takes_correct_nargs (tree_fvc *fcn, int expected_nargin, char *warn_for, |
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161 int warn) |
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162 { |
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712
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163 int nargin = fcn->max_expected_args (); |
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164 int e_nargin = expected_nargin; |
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593
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165 if (nargin != e_nargin) |
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166 { |
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167 if (warn) |
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168 error ("%s: expecting function to take %d argument%s", |
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169 warn_for, e_nargin, (e_nargin == 1 ? "" : "s")); |
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170 return 0; |
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171 } |
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172 return 1; |
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173 } |
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174 |
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712
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175 DEFUN ("is_global", Fis_global, Sis_global, 1, 1, |
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593
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176 "is_global (X): return 1 if the string X names a global variable\n\ |
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177 otherwise, return 0.") |
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178 { |
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179 Octave_object retval = 0.0; |
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180 |
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712
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181 int nargin = args.length (); |
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182 |
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183 if (nargin != 1) |
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593
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184 { |
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185 print_usage ("is_global"); |
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186 return retval; |
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187 } |
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188 |
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1363
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189 const char *name = args(0).string_value (); |
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593
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190 |
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636
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191 if (error_state) |
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192 { |
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193 error ("is_global: expecting string argument"); |
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194 return retval; |
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195 } |
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196 |
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593
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197 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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198 |
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199 retval = (double) (sr && sr->is_linked_to_global ()); |
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200 |
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201 return retval; |
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202 } |
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203 |
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712
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204 DEFUN ("exist", Fexist, Sexist, 1, 1, |
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593
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205 "exist (NAME): check if variable or file exists\n\ |
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206 \n\ |
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207 return 0 if NAME is undefined, 1 if it is a variable, or 2 if it is\n\ |
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208 a function.") |
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593
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209 { |
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210 Octave_object retval; |
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211 |
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712
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212 int nargin = args.length (); |
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213 |
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214 if (nargin != 1) |
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593
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215 { |
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216 print_usage ("exist"); |
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217 return retval; |
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218 } |
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219 |
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220 char *name = strsave (args(0).string_value ()); |
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221 |
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636
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222 if (error_state) |
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223 { |
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224 error ("exist: expecting string argument"); |
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225 delete [] name; |
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636
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226 return retval; |
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227 } |
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228 |
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229 char *struct_elts = strchr (name, '.'); |
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230 if (struct_elts) |
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231 { |
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232 *struct_elts = '\0'; |
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233 struct_elts++; |
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234 } |
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235 |
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593
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236 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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237 if (! sr) |
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238 sr = global_sym_tab->lookup (name, 0, 0); |
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239 |
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240 retval = 0.0; |
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241 |
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242 if (sr && sr->is_variable () && sr->is_defined ()) |
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243 { |
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244 retval = 1.0; |
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245 tree_fvc *def = sr->def (); |
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246 if (struct_elts) |
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247 { |
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248 retval = 0.0; |
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249 if (def->is_constant ()) |
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250 { |
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251 tree_constant *tmp = (tree_constant *) def; |
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252 tree_constant ult; |
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253 ult = tmp->lookup_map_element (struct_elts, 0, 1); |
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254 if (ult.is_defined ()) |
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255 retval = 1.0; |
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256 } |
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257 } |
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258 } |
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259 else if (sr && sr->is_builtin_function ()) |
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260 { |
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261 retval = 5.0; |
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262 } |
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263 else if (sr && sr->is_user_function ()) |
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264 { |
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265 retval = 2.0; |
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266 } |
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593
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267 else |
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268 { |
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269 char *path = fcn_file_in_path (name); |
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270 if (path) |
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271 { |
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272 delete [] path; |
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273 retval = 2.0; |
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274 } |
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275 else |
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276 { |
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277 path = oct_file_in_path (name); |
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278 if (path) |
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279 { |
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280 delete [] path; |
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281 retval = 3.0; |
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282 } |
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283 else |
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284 { |
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285 struct stat buf; |
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286 if (stat (name, &buf) == 0 && S_ISREG (buf.st_mode)) |
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287 retval = 2.0; |
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288 } |
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593
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289 } |
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290 } |
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291 |
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292 delete [] name; |
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293 |
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593
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294 return retval; |
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295 } |
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296 |
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297 // XXX FIXME XXX -- should these really be here? |
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298 |
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299 static char * |
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300 octave_home (void) |
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301 { |
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302 char *oh = getenv ("OCTAVE_HOME"); |
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666
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303 |
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304 return (oh ? oh : OCTAVE_PREFIX); |
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305 } |
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306 |
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307 static char * |
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308 subst_octave_home (char *s) |
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309 { |
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310 char *home = octave_home (); |
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311 char *prefix = OCTAVE_PREFIX; |
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312 |
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313 char *retval; |
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314 |
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315 if (strcmp (home, prefix) == 0) |
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316 retval = strsave (s); |
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317 else |
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666
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318 { |
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319 int len_home = strlen (home); |
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320 int len_prefix = strlen (prefix); |
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321 |
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322 int count = 0; |
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323 char *ptr = s; |
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811
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324 char *next = 0; |
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325 while ((next = strstr (ptr, prefix))) |
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666
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326 { |
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811
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327 ptr = next + len_prefix; |
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666
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328 count++; |
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329 } |
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330 |
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331 int grow_size = count * (len_home - len_prefix); |
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332 |
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811
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333 int len_s = strlen (s); |
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334 |
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335 int len_retval = len_s + count * grow_size; |
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666
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336 |
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337 retval = new char [len_retval+1]; |
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338 |
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339 char *p1 = s; |
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340 char *p2 = p1; |
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341 char *pdest = retval; |
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342 |
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1271
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343 // Is this really a good way to do this? |
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811
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344 |
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345 while (count >= 0) |
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666
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346 { |
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347 p2 = strstr (p1, prefix); |
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348 |
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666
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349 if (! p2) |
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770
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350 { |
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811
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351 memcpy (pdest, p1, strlen (p1)+1); |
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352 break; |
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770
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353 } |
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811
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354 else if (p1 == p2) |
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666
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355 { |
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356 memcpy (pdest, home, len_home); |
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357 pdest += len_home; |
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358 p1 += len_prefix; |
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359 count--; |
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666
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360 } |
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361 else |
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362 { |
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363 int len = (int) (p2 - p1); |
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364 memcpy (pdest, p1, len); |
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365 pdest += len; |
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366 p1 += len; |
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367 } |
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368 |
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369 } |
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370 } |
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371 |
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372 return retval; |
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593
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373 } |
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374 |
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375 static char * |
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376 octave_info_dir (void) |
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377 { |
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666
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378 static char *retval = subst_octave_home (OCTAVE_INFODIR); |
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379 return retval; |
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380 } |
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381 |
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686
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382 char * |
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666
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383 octave_arch_lib_dir (void) |
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384 { |
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385 static char *retval = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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386 return retval; |
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593
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387 } |
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388 |
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798
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389 char * |
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390 octave_bin_dir (void) |
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391 { |
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392 static char *retval = subst_octave_home (OCTAVE_BINDIR); |
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393 return retval; |
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394 } |
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395 |
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593
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396 static char * |
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397 default_pager (void) |
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398 { |
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399 static char *pager_binary = 0; |
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400 delete [] pager_binary; |
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401 char *pgr = getenv ("PAGER"); |
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402 if (pgr) |
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403 pager_binary = strsave (pgr); |
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404 else |
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405 #ifdef DEFAULT_PAGER |
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406 pager_binary = strsave (DEFAULT_PAGER); |
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407 #else |
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408 pager_binary = strsave (""); |
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409 #endif |
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410 |
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411 return pager_binary; |
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412 } |
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413 |
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1121
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414 // Always returns a new string. |
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415 |
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416 char * |
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417 maybe_add_default_load_path (const char *p) |
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418 { |
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419 static char *std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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420 |
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421 char *pathstring = strsave (p); |
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422 |
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423 if (pathstring[0] == SEPCHAR) |
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424 { |
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425 char *tmp = pathstring; |
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426 pathstring = strconcat (std_path, pathstring); |
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427 delete [] tmp; |
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428 } |
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429 |
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430 int tmp_len = strlen (pathstring); |
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431 if (pathstring[tmp_len-1] == SEPCHAR) |
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432 { |
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433 char *tmp = pathstring; |
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434 pathstring = strconcat (pathstring, std_path); |
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435 delete [] tmp; |
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436 } |
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437 |
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438 return pathstring; |
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439 } |
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440 |
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593
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441 char * |
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442 octave_lib_dir (void) |
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443 { |
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666
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444 static char *retval = subst_octave_home (OCTAVE_LIBDIR); |
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445 return retval; |
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593
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446 } |
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447 |
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448 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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449 // If the path starts with `:', prepend the standard path. If it ends |
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450 // with `:' append the standard path. If it begins and ends with |
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451 // `:', do both (which is useless, but the luser asked for it...). |
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452 // |
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453 // This function may eventually be called more than once, so be |
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1418
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454 // careful not to create memory leaks. |
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593
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455 |
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456 char * |
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457 default_path (void) |
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458 { |
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1121
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459 static char *std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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460 |
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461 static char *oct_path = getenv ("OCTAVE_PATH"); |
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462 |
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593
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463 static char *pathstring = 0; |
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464 delete [] pathstring; |
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465 |
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1121
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466 return oct_path ? strsave (oct_path) : strsave (std_path); |
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593
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467 } |
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468 |
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469 char * |
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470 default_info_file (void) |
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471 { |
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472 static char *info_file_string = 0; |
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473 delete [] info_file_string; |
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474 char *oct_info_file = getenv ("OCTAVE_INFO_FILE"); |
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475 if (oct_info_file) |
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476 info_file_string = strsave (oct_info_file); |
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477 else |
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478 { |
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479 char *infodir = octave_info_dir (); |
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480 info_file_string = strconcat (infodir, "/octave.info"); |
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481 } |
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482 return info_file_string; |
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483 } |
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484 |
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485 char * |
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486 default_editor (void) |
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487 { |
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488 static char *editor_string = 0; |
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489 delete [] editor_string; |
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490 char *env_editor = getenv ("EDITOR"); |
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491 if (env_editor && *env_editor) |
|
|
492 editor_string = strsave (env_editor); |
|
|
493 else |
|
|
494 editor_string = strsave ("vi"); |
|
|
495 return editor_string; |
|
|
496 } |
|
|
497 |
|
|
498 char * |
|
|
499 get_site_defaults (void) |
|
|
500 { |
|
731
|
501 static char *startupdir = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
|
|
502 static char *sd = strconcat (startupdir, "/octaverc"); |
|
593
|
503 return sd; |
|
|
504 } |
|
|
505 |
|
|
506 // Functions for looking up variables and functions. |
|
|
507 |
|
581
|
508 // Is there a corresponding function file that is newer than the |
|
|
509 // symbol definition? |
|
|
510 |
|
593
|
511 static int |
|
1
|
512 symbol_out_of_date (symbol_record *sr) |
|
|
513 { |
|
195
|
514 int ignore = user_pref.ignore_function_time_stamp; |
|
|
515 |
|
|
516 if (ignore == 2) |
|
|
517 return 0; |
|
|
518 |
|
529
|
519 if (sr) |
|
1
|
520 { |
|
490
|
521 tree_fvc *ans = sr->def (); |
|
529
|
522 if (ans) |
|
1
|
523 { |
|
339
|
524 char *ff = ans->fcn_file_name (); |
|
529
|
525 if (ff && ! (ignore && ans->is_system_fcn_file ())) |
|
1
|
526 { |
|
|
527 time_t tp = ans->time_parsed (); |
|
339
|
528 char *fname = fcn_file_in_path (ff); |
|
195
|
529 int status = is_newer (fname, tp); |
|
|
530 delete [] fname; |
|
|
531 if (status > 0) |
|
|
532 return 1; |
|
1
|
533 } |
|
|
534 } |
|
|
535 } |
|
195
|
536 return 0; |
|
1
|
537 } |
|
|
538 |
|
991
|
539 static int |
|
|
540 looks_like_octave_copyright (char *s) |
|
|
541 { |
|
|
542 if (s && strncmp (s, " Copyright (C) ", 15) == 0) |
|
|
543 { |
|
|
544 s = strchr (s, '\n'); |
|
|
545 if (s) |
|
|
546 { |
|
|
547 s++; |
|
|
548 s = strchr (s, '\n'); |
|
|
549 if (s) |
|
|
550 { |
|
|
551 s++; |
|
|
552 if (strncmp (s, " This file is part of Octave.", 29) == 0) |
|
|
553 return 1; |
|
|
554 } |
|
|
555 } |
|
|
556 } |
|
|
557 return 0; |
|
|
558 } |
|
|
559 |
|
1419
|
560 // Eat whitespace and comments from FFILE, returning the text of the |
|
|
561 // comments read if it doesn't look like a copyright notice. If |
|
|
562 // IN_PARTS, consider each block of comments separately; otherwise, |
|
|
563 // grab them all at once. |
|
1418
|
564 |
|
991
|
565 static char * |
|
1419
|
566 gobble_leading_white_space (FILE *ffile, int in_parts) |
|
581
|
567 { |
|
991
|
568 ostrstream buf; |
|
|
569 |
|
|
570 int first_comments_seen = 0; |
|
|
571 int have_help_text = 0; |
|
581
|
572 int in_comment = 0; |
|
|
573 int c; |
|
|
574 while ((c = getc (ffile)) != EOF) |
|
|
575 { |
|
984
|
576 current_input_column++; |
|
581
|
577 if (in_comment) |
|
|
578 { |
|
991
|
579 if (! have_help_text) |
|
|
580 { |
|
|
581 first_comments_seen = 1; |
|
|
582 buf << (char) c; |
|
|
583 } |
|
|
584 |
|
581
|
585 if (c == '\n') |
|
984
|
586 { |
|
|
587 input_line_number++; |
|
|
588 current_input_column = 0; |
|
|
589 in_comment = 0; |
|
1419
|
590 if (in_parts) |
|
1418
|
591 { |
|
1419
|
592 if ((c = getc (ffile)) != EOF) |
|
|
593 { |
|
|
594 current_input_column--; |
|
|
595 ungetc (c, ffile); |
|
|
596 if (c == '\n') |
|
|
597 break; |
|
|
598 } |
|
|
599 else |
|
1418
|
600 break; |
|
|
601 } |
|
984
|
602 } |
|
581
|
603 } |
|
|
604 else |
|
|
605 { |
|
984
|
606 switch (c) |
|
581
|
607 { |
|
984
|
608 case ' ': |
|
|
609 case '\t': |
|
991
|
610 if (first_comments_seen) |
|
|
611 have_help_text = 1; |
|
984
|
612 break; |
|
|
613 |
|
|
614 case '\n': |
|
993
|
615 if (first_comments_seen) |
|
|
616 have_help_text = 1; |
|
984
|
617 input_line_number++; |
|
|
618 current_input_column = 0; |
|
|
619 continue; |
|
|
620 |
|
|
621 case '%': |
|
|
622 case '#': |
|
|
623 in_comment = 1; |
|
|
624 break; |
|
|
625 |
|
|
626 default: |
|
|
627 current_input_column--; |
|
581
|
628 ungetc (c, ffile); |
|
991
|
629 goto done; |
|
581
|
630 } |
|
|
631 } |
|
|
632 } |
|
991
|
633 |
|
|
634 done: |
|
|
635 |
|
|
636 buf << ends; |
|
|
637 char *help_txt = buf.str (); |
|
|
638 |
|
1419
|
639 if (help_txt) |
|
991
|
640 { |
|
1419
|
641 if (looks_like_octave_copyright (help_txt)) |
|
|
642 { |
|
|
643 delete [] help_txt; |
|
|
644 help_txt = 0; |
|
|
645 } |
|
|
646 |
|
|
647 if (in_parts && ! help_txt) |
|
|
648 help_txt = gobble_leading_white_space (ffile, in_parts); |
|
1418
|
649 } |
|
|
650 |
|
|
651 if (help_txt && ! *help_txt) |
|
|
652 { |
|
|
653 delete [] help_txt; |
|
991
|
654 help_txt = 0; |
|
|
655 } |
|
|
656 |
|
|
657 return help_txt; |
|
581
|
658 } |
|
|
659 |
|
|
660 static int |
|
|
661 is_function_file (FILE *ffile) |
|
|
662 { |
|
|
663 int status = 0; |
|
|
664 |
|
|
665 long pos = ftell (ffile); |
|
|
666 |
|
|
667 char buf [10]; |
|
|
668 fgets (buf, 10, ffile); |
|
|
669 int len = strlen (buf); |
|
|
670 if (len > 8 && strncmp (buf, "function", 8) == 0 |
|
|
671 && ! (isalnum (buf[8]) || buf[8] == '_')) |
|
|
672 status = 1; |
|
|
673 |
|
|
674 fseek (ffile, pos, SEEK_SET); |
|
|
675 |
|
|
676 return status; |
|
|
677 } |
|
|
678 |
|
|
679 static int |
|
|
680 parse_fcn_file (int exec_script, char *ff) |
|
|
681 { |
|
|
682 begin_unwind_frame ("parse_fcn_file"); |
|
|
683 |
|
|
684 int script_file_executed = 0; |
|
|
685 |
|
|
686 assert (ff); |
|
|
687 |
|
1358
|
688 // Open function file and parse. |
|
581
|
689 |
|
|
690 int old_reading_fcn_file_state = reading_fcn_file; |
|
|
691 |
|
|
692 unwind_protect_ptr (rl_instream); |
|
|
693 unwind_protect_ptr (ff_instream); |
|
|
694 |
|
|
695 unwind_protect_int (using_readline); |
|
|
696 unwind_protect_int (input_line_number); |
|
|
697 unwind_protect_int (current_input_column); |
|
|
698 unwind_protect_int (reading_fcn_file); |
|
|
699 |
|
|
700 using_readline = 0; |
|
|
701 reading_fcn_file = 1; |
|
|
702 input_line_number = 0; |
|
|
703 current_input_column = 1; |
|
|
704 |
|
|
705 FILE *ffile = get_input_from_file (ff, 0); |
|
|
706 |
|
|
707 if (ffile) |
|
|
708 { |
|
1271
|
709 // Check to see if this file defines a function or is just a |
|
|
710 // list of commands. |
|
581
|
711 |
|
1418
|
712 char *tmp_help_txt = gobble_leading_white_space (ffile, 0); |
|
991
|
713 |
|
581
|
714 if (is_function_file (ffile)) |
|
|
715 { |
|
|
716 unwind_protect_int (echo_input); |
|
|
717 unwind_protect_int (saving_history); |
|
|
718 unwind_protect_int (reading_fcn_file); |
|
|
719 |
|
|
720 echo_input = 0; |
|
|
721 saving_history = 0; |
|
|
722 reading_fcn_file = 1; |
|
|
723 |
|
|
724 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
725 YY_BUFFER_STATE new_buf = create_buffer (ffile); |
|
|
726 |
|
|
727 add_unwind_protect (restore_input_buffer, (void *) old_buf); |
|
|
728 add_unwind_protect (delete_input_buffer, (void *) new_buf); |
|
|
729 |
|
|
730 switch_to_buffer (new_buf); |
|
|
731 |
|
|
732 unwind_protect_ptr (curr_sym_tab); |
|
|
733 |
|
|
734 reset_parser (); |
|
|
735 |
|
991
|
736 delete [] help_buf; |
|
|
737 help_buf = tmp_help_txt; |
|
|
738 |
|
581
|
739 int status = yyparse (); |
|
|
740 |
|
|
741 if (status != 0) |
|
|
742 { |
|
|
743 error ("parse error while reading function file %s", ff); |
|
|
744 global_sym_tab->clear (curr_fcn_file_name); |
|
|
745 } |
|
|
746 } |
|
|
747 else if (exec_script) |
|
|
748 { |
|
1271
|
749 // We don't need this now. |
|
|
750 |
|
|
751 delete [] tmp_help_txt; |
|
|
752 |
|
|
753 // The value of `reading_fcn_file' will be restored to the |
|
|
754 // proper value when we unwind from this frame. |
|
|
755 |
|
581
|
756 reading_fcn_file = old_reading_fcn_file_state; |
|
|
757 |
|
|
758 unwind_protect_int (reading_script_file); |
|
|
759 reading_script_file = 1; |
|
|
760 |
|
|
761 parse_and_execute (ffile, 1); |
|
|
762 |
|
|
763 script_file_executed = 1; |
|
|
764 } |
|
|
765 fclose (ffile); |
|
|
766 } |
|
|
767 |
|
|
768 run_unwind_frame ("parse_fcn_file"); |
|
|
769 |
|
|
770 return script_file_executed; |
|
|
771 } |
|
|
772 |
|
593
|
773 static int |
|
581
|
774 load_fcn_from_file (symbol_record *sym_rec, int exec_script) |
|
|
775 { |
|
|
776 int script_file_executed = 0; |
|
|
777 |
|
|
778 char *nm = sym_rec->name (); |
|
|
779 |
|
1271
|
780 // This is needed by yyparse. |
|
704
|
781 |
|
581
|
782 curr_fcn_file_name = nm; |
|
|
783 |
|
704
|
784 #ifdef WITH_DLD |
|
581
|
785 |
|
704
|
786 if (load_octave_oct_file (nm)) |
|
|
787 { |
|
|
788 force_link_to_function (nm); |
|
|
789 } |
|
|
790 else |
|
581
|
791 |
|
704
|
792 #endif |
|
581
|
793 |
|
|
794 { |
|
704
|
795 char *ff = fcn_file_in_path (nm); |
|
581
|
796 |
|
|
797 if (ff) |
|
|
798 { |
|
|
799 script_file_executed = parse_fcn_file (exec_script, ff); |
|
|
800 delete [] ff; |
|
|
801 } |
|
|
802 |
|
|
803 if (! (error_state || script_file_executed)) |
|
|
804 force_link_to_function (nm); |
|
|
805 } |
|
|
806 |
|
|
807 return script_file_executed; |
|
|
808 } |
|
|
809 |
|
|
810 int |
|
|
811 lookup (symbol_record *sym_rec, int exec_script) |
|
|
812 { |
|
1271
|
813 int script_executed = 0; |
|
581
|
814 |
|
|
815 if (! sym_rec->is_linked_to_global ()) |
|
|
816 { |
|
|
817 if (sym_rec->is_defined ()) |
|
|
818 { |
|
|
819 if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
820 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
821 } |
|
|
822 else if (! sym_rec->is_formal_parameter ()) |
|
|
823 { |
|
|
824 link_to_builtin_or_function (sym_rec); |
|
1271
|
825 |
|
581
|
826 if (! sym_rec->is_defined ()) |
|
1271
|
827 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
828 else if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
829 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
830 } |
|
|
831 } |
|
|
832 |
|
1271
|
833 return script_executed; |
|
581
|
834 } |
|
|
835 |
|
|
836 // Get the symbol record for the given name that is visible in the |
|
|
837 // current scope. Reread any function definitions that appear to be |
|
|
838 // out of date. If a function is available in a file but is not |
|
|
839 // currently loaded, this will load it and insert the name in the |
|
|
840 // current symbol table. |
|
|
841 |
|
|
842 symbol_record * |
|
|
843 lookup_by_name (const char *nm, int exec_script) |
|
|
844 { |
|
|
845 symbol_record *sym_rec = curr_sym_tab->lookup (nm, 1, 0); |
|
|
846 |
|
|
847 lookup (sym_rec, exec_script); |
|
|
848 |
|
|
849 return sym_rec; |
|
|
850 } |
|
|
851 |
|
991
|
852 char * |
|
993
|
853 get_help_from_file (const char *path) |
|
991
|
854 { |
|
|
855 if (path && *path) |
|
|
856 { |
|
|
857 FILE *fptr = fopen (path, "r"); |
|
|
858 if (fptr) |
|
|
859 { |
|
1418
|
860 char *help_txt = gobble_leading_white_space (fptr, 1); |
|
991
|
861 fclose (fptr); |
|
|
862 return help_txt; |
|
|
863 } |
|
|
864 } |
|
|
865 return 0; |
|
|
866 } |
|
|
867 |
|
593
|
868 // Variable values. |
|
195
|
869 |
|
581
|
870 // Look for the given name in the global symbol table. If it refers |
|
|
871 // to a string, return a new copy. If not, return 0; |
|
|
872 |
|
1
|
873 char * |
|
195
|
874 builtin_string_variable (const char *name) |
|
1
|
875 { |
|
195
|
876 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
877 |
|
1271
|
878 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
879 |
|
529
|
880 assert (sr); |
|
195
|
881 |
|
529
|
882 char *retval = 0; |
|
1
|
883 |
|
490
|
884 tree_fvc *defn = sr->def (); |
|
195
|
885 |
|
529
|
886 if (defn) |
|
1
|
887 { |
|
|
888 tree_constant val = defn->eval (0); |
|
195
|
889 |
|
610
|
890 if (! error_state && val.is_string ()) |
|
1
|
891 { |
|
1363
|
892 const char *s = val.string_value (); |
|
636
|
893 |
|
529
|
894 if (s) |
|
1
|
895 retval = strsave (s); |
|
|
896 } |
|
|
897 } |
|
|
898 |
|
|
899 return retval; |
|
|
900 } |
|
|
901 |
|
581
|
902 // Look for the given name in the global symbol table. If it refers |
|
|
903 // to a real scalar, place the value in d and return 0. Otherwise, |
|
1418
|
904 // return -1. |
|
581
|
905 |
|
1
|
906 int |
|
195
|
907 builtin_real_scalar_variable (const char *name, double& d) |
|
1
|
908 { |
|
|
909 int status = -1; |
|
195
|
910 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
911 |
|
1271
|
912 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
913 |
|
529
|
914 assert (sr); |
|
1
|
915 |
|
490
|
916 tree_fvc *defn = sr->def (); |
|
195
|
917 |
|
529
|
918 if (defn) |
|
1
|
919 { |
|
|
920 tree_constant val = defn->eval (0); |
|
195
|
921 |
|
598
|
922 if (! error_state && val.is_scalar_type ()) |
|
1
|
923 { |
|
|
924 d = val.double_value (); |
|
|
925 status = 0; |
|
|
926 } |
|
|
927 } |
|
|
928 |
|
|
929 return status; |
|
|
930 } |
|
|
931 |
|
1093
|
932 // Look for the given name in the global symbol table. |
|
|
933 |
|
|
934 tree_constant |
|
|
935 builtin_any_variable (const char *name) |
|
|
936 { |
|
|
937 tree_constant retval; |
|
|
938 |
|
|
939 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
940 |
|
1271
|
941 // It is a prorgramming error to look for builtins that aren't. |
|
1093
|
942 |
|
|
943 assert (sr); |
|
|
944 |
|
|
945 tree_fvc *defn = sr->def (); |
|
|
946 |
|
|
947 if (defn) |
|
|
948 retval = defn->eval (0); |
|
|
949 |
|
|
950 return retval; |
|
|
951 } |
|
|
952 |
|
593
|
953 // Global stuff and links to builtin variables and functions. |
|
|
954 |
|
581
|
955 // Make the definition of the symbol record sr be the same as the |
|
|
956 // definition of the global variable of the same name, creating it if |
|
1418
|
957 // it doesn't already exist. |
|
581
|
958 |
|
195
|
959 void |
|
|
960 link_to_global_variable (symbol_record *sr) |
|
|
961 { |
|
|
962 if (sr->is_linked_to_global ()) |
|
|
963 return; |
|
|
964 |
|
|
965 symbol_record *gsr = global_sym_tab->lookup (sr->name (), 1, 0); |
|
|
966 |
|
|
967 if (sr->is_formal_parameter ()) |
|
|
968 { |
|
|
969 error ("can't make function parameter `%s' global", sr->name ()); |
|
|
970 return; |
|
|
971 } |
|
|
972 |
|
1271
|
973 // There must be a better way to do this. XXX FIXME XXX |
|
195
|
974 |
|
|
975 if (sr->is_variable ()) |
|
|
976 { |
|
1271
|
977 // Would be nice not to have this cast. XXX FIXME XXX |
|
|
978 |
|
195
|
979 tree_constant *tmp = (tree_constant *) sr->def (); |
|
529
|
980 if (tmp) |
|
|
981 tmp = new tree_constant (*tmp); |
|
|
982 else |
|
207
|
983 tmp = new tree_constant (); |
|
195
|
984 gsr->define (tmp); |
|
|
985 } |
|
|
986 else |
|
529
|
987 sr->clear (); |
|
195
|
988 |
|
1271
|
989 // If the global symbol is currently defined as a function, we need |
|
|
990 // to hide it with a variable. |
|
195
|
991 |
|
|
992 if (gsr->is_function ()) |
|
529
|
993 gsr->define ((tree_constant *) 0); |
|
195
|
994 |
|
|
995 sr->alias (gsr, 1); |
|
|
996 sr->mark_as_linked_to_global (); |
|
|
997 } |
|
|
998 |
|
581
|
999 // Make the definition of the symbol record sr be the same as the |
|
|
1000 // definition of the builtin variable of the same name. |
|
|
1001 |
|
195
|
1002 void |
|
|
1003 link_to_builtin_variable (symbol_record *sr) |
|
|
1004 { |
|
|
1005 symbol_record *tmp_sym = global_sym_tab->lookup (sr->name (), 0, 0); |
|
|
1006 |
|
529
|
1007 if (tmp_sym && tmp_sym->is_builtin_variable ()) |
|
|
1008 sr->alias (tmp_sym); |
|
195
|
1009 } |
|
|
1010 |
|
581
|
1011 // Make the definition of the symbol record sr be the same as the |
|
|
1012 // definition of the builtin variable or function, or user function of |
|
|
1013 // the same name, provided that the name has not been used as a formal |
|
|
1014 // parameter. |
|
|
1015 |
|
195
|
1016 void |
|
|
1017 link_to_builtin_or_function (symbol_record *sr) |
|
|
1018 { |
|
|
1019 symbol_record *tmp_sym = global_sym_tab->lookup (sr->name (), 0, 0); |
|
|
1020 |
|
529
|
1021 if (tmp_sym |
|
|
1022 && (tmp_sym->is_builtin_variable () || tmp_sym->is_function ()) |
|
|
1023 && ! tmp_sym->is_formal_parameter ()) |
|
|
1024 sr->alias (tmp_sym); |
|
195
|
1025 } |
|
|
1026 |
|
581
|
1027 // Force a link to a function in the current symbol table. This is |
|
|
1028 // used just after defining a function to avoid different behavior |
|
|
1029 // depending on whether or not the function has been evaluated after |
|
|
1030 // being defined. |
|
|
1031 // |
|
|
1032 // Return without doing anything if there isn't a function with the |
|
|
1033 // given name defined in the global symbol table. |
|
|
1034 |
|
195
|
1035 void |
|
|
1036 force_link_to_function (const char *id_name) |
|
|
1037 { |
|
|
1038 symbol_record *gsr = global_sym_tab->lookup (id_name, 1, 0); |
|
|
1039 if (gsr->is_function ()) |
|
|
1040 { |
|
|
1041 curr_sym_tab->clear (id_name); |
|
|
1042 symbol_record *csr = curr_sym_tab->lookup (id_name, 1, 0); |
|
|
1043 csr->alias (gsr); |
|
|
1044 } |
|
|
1045 } |
|
|
1046 |
|
605
|
1047 // Help stuff. Shouldn't this go in help.cc? |
|
593
|
1048 |
|
|
1049 // It's not likely that this does the right thing now. XXX FIXME XXX |
|
|
1050 |
|
|
1051 char ** |
|
|
1052 make_name_list (void) |
|
|
1053 { |
|
|
1054 int key_len = 0; |
|
|
1055 int glb_len = 0; |
|
|
1056 int top_len = 0; |
|
|
1057 int lcl_len = 0; |
|
|
1058 int ffl_len = 0; |
|
|
1059 |
|
|
1060 char **key = 0; |
|
|
1061 char **glb = 0; |
|
|
1062 char **top = 0; |
|
|
1063 char **lcl = 0; |
|
|
1064 char **ffl = 0; |
|
|
1065 |
|
1271
|
1066 // Each of these functions returns a new vector of pointers to new |
|
|
1067 // strings. |
|
593
|
1068 |
|
|
1069 key = names (keyword_help (), key_len); |
|
|
1070 glb = global_sym_tab->list (glb_len); |
|
|
1071 top = top_level_sym_tab->list (top_len); |
|
|
1072 if (top_level_sym_tab != curr_sym_tab) |
|
|
1073 lcl = curr_sym_tab->list (lcl_len); |
|
|
1074 ffl = get_fcn_file_names (ffl_len, 1); |
|
|
1075 |
|
|
1076 int total_len = key_len + glb_len + top_len + lcl_len + ffl_len; |
|
|
1077 |
|
|
1078 char **list = new char * [total_len+1]; |
|
1418
|
1079 |
|
1271
|
1080 // Put all the symbols in one big list. Only copy pointers, not the |
|
|
1081 // strings they point to, then only delete the original array of |
|
|
1082 // pointers, and not the strings they point to. |
|
593
|
1083 |
|
|
1084 int j = 0; |
|
|
1085 int i = 0; |
|
|
1086 for (i = 0; i < key_len; i++) |
|
|
1087 list[j++] = key[i]; |
|
|
1088 |
|
|
1089 for (i = 0; i < glb_len; i++) |
|
|
1090 list[j++] = glb[i]; |
|
|
1091 |
|
|
1092 for (i = 0; i < top_len; i++) |
|
|
1093 list[j++] = top[i]; |
|
|
1094 |
|
|
1095 for (i = 0; i < lcl_len; i++) |
|
|
1096 list[j++] = lcl[i]; |
|
|
1097 |
|
|
1098 for (i = 0; i < ffl_len; i++) |
|
|
1099 list[j++] = ffl[i]; |
|
|
1100 |
|
|
1101 list[j] = 0; |
|
|
1102 |
|
|
1103 delete [] key; |
|
|
1104 delete [] glb; |
|
|
1105 delete [] top; |
|
|
1106 delete [] lcl; |
|
|
1107 delete [] ffl; |
|
|
1108 |
|
|
1109 return list; |
|
|
1110 } |
|
|
1111 |
|
|
1112 // List variable names. |
|
|
1113 |
|
|
1114 static void |
|
|
1115 print_symbol_info_line (ostrstream& output_buf, const symbol_record_info& s) |
|
|
1116 { |
|
|
1117 output_buf << (s.is_read_only () ? " -" : " w"); |
|
|
1118 output_buf << (s.is_eternal () ? "- " : "d "); |
|
|
1119 #if 0 |
|
|
1120 output_buf << (s.hides_fcn () ? "f" : (s.hides_builtin () ? "F" : "-")); |
|
|
1121 #endif |
|
|
1122 output_buf.form (" %-16s", s.type_as_string ()); |
|
|
1123 if (s.is_function ()) |
|
|
1124 output_buf << " - -"; |
|
|
1125 else |
|
|
1126 { |
|
|
1127 output_buf.form ("%7d", s.rows ()); |
|
|
1128 output_buf.form ("%7d", s.columns ()); |
|
|
1129 } |
|
|
1130 output_buf << " " << s.name () << "\n"; |
|
|
1131 } |
|
|
1132 |
|
|
1133 static void |
|
|
1134 print_long_listing (ostrstream& output_buf, symbol_record_info *s) |
|
|
1135 { |
|
|
1136 if (! s) |
|
|
1137 return; |
|
|
1138 |
|
|
1139 symbol_record_info *ptr = s; |
|
|
1140 while (ptr->is_defined ()) |
|
|
1141 { |
|
|
1142 print_symbol_info_line (output_buf, *ptr); |
|
|
1143 ptr++; |
|
|
1144 } |
|
|
1145 } |
|
|
1146 |
|
|
1147 static int |
|
867
|
1148 maybe_list (const char *header, char **argv, int argc, |
|
|
1149 ostrstream& output_buf, int show_verbose, symbol_table |
|
|
1150 *sym_tab, unsigned type, unsigned scope) |
|
593
|
1151 { |
|
|
1152 int count; |
|
|
1153 int status = 0; |
|
|
1154 if (show_verbose) |
|
|
1155 { |
|
|
1156 symbol_record_info *symbols; |
|
867
|
1157 symbols = sym_tab->long_list (count, argv, argc, 1, type, scope); |
|
593
|
1158 if (symbols && count > 0) |
|
|
1159 { |
|
|
1160 output_buf << "\n" << header << "\n\n" |
|
|
1161 << "prot type rows cols name\n" |
|
|
1162 << "==== ==== ==== ==== ====\n"; |
|
|
1163 |
|
|
1164 print_long_listing (output_buf, symbols); |
|
|
1165 status = 1; |
|
|
1166 } |
|
|
1167 delete [] symbols; |
|
|
1168 } |
|
|
1169 else |
|
|
1170 { |
|
867
|
1171 char **symbols = sym_tab->list (count, argv, argc, 1, type, scope); |
|
593
|
1172 if (symbols && count > 0) |
|
|
1173 { |
|
|
1174 output_buf << "\n" << header << "\n\n"; |
|
|
1175 list_in_columns (output_buf, symbols); |
|
|
1176 status = 1; |
|
|
1177 } |
|
|
1178 delete [] symbols; |
|
|
1179 } |
|
|
1180 return status; |
|
|
1181 } |
|
|
1182 |
|
|
1183 DEFUN_TEXT ("document", Fdocument, Sdocument, -1, 1, |
|
|
1184 "document symbol string ...\n\ |
|
|
1185 \n\ |
|
|
1186 Associate a cryptic message with a variable name.") |
|
|
1187 { |
|
|
1188 Octave_object retval; |
|
|
1189 |
|
|
1190 DEFINE_ARGV("document"); |
|
|
1191 |
|
|
1192 if (argc == 3) |
|
|
1193 { |
|
|
1194 char *name = argv[1]; |
|
|
1195 char *help = argv[2]; |
|
|
1196 |
|
|
1197 if (is_builtin_variable (name)) |
|
|
1198 error ("sorry, can't redefine help for builtin variables"); |
|
|
1199 else |
|
|
1200 { |
|
|
1201 symbol_record *sym_rec = curr_sym_tab->lookup (name, 0); |
|
|
1202 |
|
|
1203 if (sym_rec) |
|
|
1204 sym_rec->document (help); |
|
|
1205 else |
|
|
1206 error ("document: no such symbol `%s'", name); |
|
|
1207 } |
|
|
1208 } |
|
|
1209 else |
|
|
1210 print_usage ("document"); |
|
|
1211 |
|
|
1212 DELETE_ARGV; |
|
|
1213 |
|
|
1214 return retval; |
|
|
1215 } |
|
|
1216 |
|
584
|
1217 // XXX FIXME XXX -- this should take a list of regular expressions |
|
|
1218 // naming the variables to look for. |
|
|
1219 |
|
581
|
1220 static Octave_object |
|
|
1221 do_who (int argc, char **argv, int nargout) |
|
529
|
1222 { |
|
|
1223 Octave_object retval; |
|
|
1224 |
|
|
1225 int show_builtins = 0; |
|
|
1226 int show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1227 int show_variables = 1; |
|
|
1228 int show_verbose = 0; |
|
|
1229 |
|
584
|
1230 char *my_name = argv[0]; |
|
|
1231 |
|
529
|
1232 if (argc > 1) |
|
|
1233 { |
|
|
1234 show_functions = 0; |
|
|
1235 show_variables = 0; |
|
|
1236 } |
|
|
1237 |
|
867
|
1238 while (--argc > 0) |
|
529
|
1239 { |
|
|
1240 argv++; |
|
867
|
1241 |
|
529
|
1242 if (strcmp (*argv, "-all") == 0 || strcmp (*argv, "-a") == 0) |
|
|
1243 { |
|
|
1244 show_builtins++; |
|
|
1245 show_functions++; |
|
1418
|
1246 show_variables++; |
|
529
|
1247 } |
|
605
|
1248 else if (strcmp (*argv, "-builtins") == 0 || strcmp (*argv, "-b") == 0) |
|
529
|
1249 show_builtins++; |
|
605
|
1250 else if (strcmp (*argv, "-functions") == 0 || strcmp (*argv, "-f") == 0) |
|
529
|
1251 show_functions++; |
|
605
|
1252 else if (strcmp (*argv, "-long") == 0 || strcmp (*argv, "-l") == 0) |
|
|
1253 show_verbose++; |
|
|
1254 else if (strcmp (*argv, "-variables") == 0 || strcmp (*argv, "-v") == 0) |
|
529
|
1255 show_variables++; |
|
867
|
1256 else if (*argv[0] == '-') |
|
|
1257 warning ("%s: unrecognized option `%s'", my_name, *argv); |
|
529
|
1258 else |
|
867
|
1259 break; |
|
529
|
1260 } |
|
|
1261 |
|
1271
|
1262 // If the user specified -l and nothing else, show variables. If |
|
|
1263 // evaluating this at the top level, also show functions. |
|
529
|
1264 |
|
|
1265 if (show_verbose && ! (show_builtins || show_functions || show_variables)) |
|
|
1266 { |
|
|
1267 show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1268 show_variables = 1; |
|
|
1269 } |
|
|
1270 |
|
|
1271 ostrstream output_buf; |
|
|
1272 int pad_after = 0; |
|
|
1273 |
|
|
1274 if (show_builtins) |
|
|
1275 { |
|
867
|
1276 pad_after += maybe_list ("*** built-in variables:", argv, argc, |
|
529
|
1277 output_buf, show_verbose, global_sym_tab, |
|
|
1278 symbol_def::BUILTIN_VARIABLE, |
|
|
1279 SYMTAB_ALL_SCOPES); |
|
|
1280 |
|
867
|
1281 pad_after += maybe_list ("*** built-in functions:", argv, argc, |
|
529
|
1282 output_buf, show_verbose, global_sym_tab, |
|
|
1283 symbol_def::BUILTIN_FUNCTION, |
|
|
1284 SYMTAB_ALL_SCOPES); |
|
|
1285 } |
|
|
1286 |
|
|
1287 if (show_functions) |
|
|
1288 { |
|
|
1289 pad_after += maybe_list ("*** currently compiled functions:", |
|
867
|
1290 argv, argc, output_buf, show_verbose, |
|
|
1291 global_sym_tab, symbol_def::USER_FUNCTION, |
|
529
|
1292 SYMTAB_ALL_SCOPES); |
|
|
1293 } |
|
|
1294 |
|
|
1295 if (show_variables) |
|
|
1296 { |
|
867
|
1297 pad_after += maybe_list ("*** local user variables:", argv, argc, |
|
529
|
1298 output_buf, show_verbose, curr_sym_tab, |
|
|
1299 symbol_def::USER_VARIABLE, |
|
1418
|
1300 SYMTAB_LOCAL_SCOPE); |
|
529
|
1301 |
|
|
1302 pad_after += maybe_list ("*** globally visible user variables:", |
|
867
|
1303 argv, argc, output_buf, show_verbose, |
|
|
1304 curr_sym_tab, symbol_def::USER_VARIABLE, |
|
529
|
1305 SYMTAB_GLOBAL_SCOPE); |
|
|
1306 } |
|
|
1307 |
|
|
1308 if (pad_after) |
|
|
1309 output_buf << "\n"; |
|
|
1310 |
|
|
1311 output_buf << ends; |
|
|
1312 maybe_page_output (output_buf); |
|
|
1313 |
|
581
|
1314 return retval; |
|
|
1315 } |
|
|
1316 |
|
|
1317 DEFUN_TEXT ("who", Fwho, Swho, -1, 1, |
|
|
1318 "who [-all] [-builtins] [-functions] [-long] [-variables]\n\ |
|
|
1319 \n\ |
|
|
1320 List currently defined symbol(s). Options may be shortened to one\n\ |
|
|
1321 character, but may not be combined.") |
|
|
1322 { |
|
|
1323 Octave_object retval; |
|
|
1324 |
|
|
1325 DEFINE_ARGV("who"); |
|
|
1326 |
|
|
1327 retval = do_who (argc, argv, nargout); |
|
|
1328 |
|
529
|
1329 DELETE_ARGV; |
|
|
1330 |
|
|
1331 return retval; |
|
|
1332 } |
|
|
1333 |
|
581
|
1334 DEFUN_TEXT ("whos", Fwhos, Swhos, -1, 1, |
|
|
1335 "whos [-all] [-builtins] [-functions] [-long] [-variables]\n\ |
|
|
1336 \n\ |
|
|
1337 List currently defined symbol(s). Options may be shortened to one\n\ |
|
|
1338 character, but may not be combined.") |
|
|
1339 { |
|
|
1340 Octave_object retval; |
|
|
1341 |
|
712
|
1342 int nargin = args.length (); |
|
|
1343 |
|
742
|
1344 Octave_object tmp_args; |
|
|
1345 for (int i = nargin; i > 0; i--) |
|
|
1346 tmp_args(i) = args(i-1); |
|
|
1347 tmp_args(0) = "-long"; |
|
581
|
1348 |
|
742
|
1349 int argc = tmp_args.length () + 1; |
|
581
|
1350 char **argv = make_argv (tmp_args, "whos"); |
|
|
1351 |
|
|
1352 if (error_state) |
|
|
1353 return retval; |
|
|
1354 |
|
|
1355 retval = do_who (argc, argv, nargout); |
|
|
1356 |
|
|
1357 while (--argc >= 0) |
|
|
1358 delete [] argv[argc]; |
|
|
1359 delete [] argv; |
|
|
1360 |
|
|
1361 return retval; |
|
|
1362 } |
|
|
1363 |
|
593
|
1364 // Install variables and functions in the symbol tables. |
|
529
|
1365 |
|
593
|
1366 void |
|
|
1367 install_builtin_mapper (builtin_mapper_function *mf) |
|
529
|
1368 { |
|
593
|
1369 symbol_record *sym_rec = global_sym_tab->lookup (mf->name, 1); |
|
|
1370 sym_rec->unprotect (); |
|
|
1371 |
|
|
1372 Mapper_fcn mfcn; |
|
628
|
1373 mfcn.name = strsave (mf->name); |
|
593
|
1374 mfcn.can_return_complex_for_real_arg = mf->can_return_complex_for_real_arg; |
|
|
1375 mfcn.lower_limit = mf->lower_limit; |
|
|
1376 mfcn.upper_limit = mf->upper_limit; |
|
|
1377 mfcn.d_d_mapper = mf->d_d_mapper; |
|
|
1378 mfcn.d_c_mapper = mf->d_c_mapper; |
|
|
1379 mfcn.c_c_mapper = mf->c_c_mapper; |
|
|
1380 |
|
722
|
1381 tree_builtin *def = new tree_builtin (1, 1, mfcn, mf->name); |
|
593
|
1382 |
|
|
1383 sym_rec->define (def); |
|
|
1384 |
|
|
1385 sym_rec->document (mf->help_string); |
|
|
1386 sym_rec->make_eternal (); |
|
|
1387 sym_rec->protect (); |
|
|
1388 } |
|
|
1389 |
|
|
1390 void |
|
|
1391 install_builtin_function (builtin_function *f) |
|
|
1392 { |
|
|
1393 symbol_record *sym_rec = global_sym_tab->lookup (f->name, 1); |
|
|
1394 sym_rec->unprotect (); |
|
|
1395 |
|
|
1396 tree_builtin *def = new tree_builtin (f->nargin_max, f->nargout_max, |
|
|
1397 f->fcn, f->name); |
|
|
1398 |
|
|
1399 sym_rec->define (def, f->is_text_fcn); |
|
|
1400 |
|
|
1401 sym_rec->document (f->help_string); |
|
|
1402 sym_rec->make_eternal (); |
|
|
1403 sym_rec->protect (); |
|
|
1404 } |
|
|
1405 |
|
|
1406 void |
|
|
1407 install_builtin_variable (builtin_variable *v) |
|
|
1408 { |
|
|
1409 if (v->install_as_function) |
|
|
1410 install_builtin_variable_as_function (v->name, v->value, v->protect, |
|
|
1411 v->eternal, v->help_string); |
|
529
|
1412 else |
|
593
|
1413 bind_builtin_variable (v->name, v->value, v->protect, v->eternal, |
|
|
1414 v->sv_function, v->help_string); |
|
529
|
1415 } |
|
|
1416 |
|
593
|
1417 void |
|
|
1418 install_builtin_variable_as_function (const char *name, tree_constant *val, |
|
|
1419 int protect, int eternal, |
|
|
1420 const char *help) |
|
529
|
1421 { |
|
593
|
1422 symbol_record *sym_rec = global_sym_tab->lookup (name, 1); |
|
|
1423 sym_rec->unprotect (); |
|
|
1424 |
|
|
1425 const char *tmp_help = help; |
|
|
1426 if (! help) |
|
|
1427 tmp_help = sym_rec->help (); |
|
|
1428 |
|
|
1429 sym_rec->define_as_fcn (val); |
|
|
1430 |
|
|
1431 sym_rec->document (tmp_help); |
|
|
1432 |
|
|
1433 if (protect) |
|
|
1434 sym_rec->protect (); |
|
|
1435 |
|
|
1436 if (eternal) |
|
|
1437 sym_rec->make_eternal (); |
|
|
1438 } |
|
|
1439 |
|
|
1440 void |
|
|
1441 alias_builtin (const char *alias, const char *name) |
|
|
1442 { |
|
|
1443 symbol_record *sr_name = global_sym_tab->lookup (name, 0, 0); |
|
|
1444 if (! sr_name) |
|
|
1445 panic ("can't alias to undefined name!"); |
|
|
1446 |
|
|
1447 symbol_record *sr_alias = global_sym_tab->lookup (alias, 1, 0); |
|
|
1448 |
|
|
1449 if (sr_alias) |
|
|
1450 sr_alias->alias (sr_name); |
|
|
1451 else |
|
770
|
1452 panic ("can't find symbol record for builtin function `%s'", alias); |
|
529
|
1453 } |
|
|
1454 |
|
593
|
1455 // Defining variables. |
|
|
1456 |
|
1161
|
1457 #if 0 |
|
593
|
1458 void |
|
|
1459 bind_nargin_and_nargout (symbol_table *sym_tab, int nargin, int nargout) |
|
529
|
1460 { |
|
593
|
1461 tree_constant *tmp; |
|
|
1462 symbol_record *sr; |
|
|
1463 |
|
|
1464 sr = sym_tab->lookup ("nargin", 1, 0); |
|
|
1465 sr->unprotect (); |
|
712
|
1466 tmp = new tree_constant (nargin); |
|
593
|
1467 sr->define (tmp); |
|
|
1468 |
|
|
1469 sr = sym_tab->lookup ("nargout", 1, 0); |
|
|
1470 sr->unprotect (); |
|
|
1471 tmp = new tree_constant (nargout); |
|
|
1472 sr->define (tmp); |
|
|
1473 } |
|
1161
|
1474 #endif |
|
593
|
1475 |
|
1162
|
1476 void |
|
|
1477 bind_ans (const tree_constant& val, int print) |
|
|
1478 { |
|
|
1479 static symbol_record *sr = global_sym_tab->lookup ("ans", 1, 0); |
|
|
1480 |
|
1281
|
1481 tree_identifier *ans_id = new tree_identifier (sr); |
|
1162
|
1482 tree_constant *tmp = new tree_constant (val); |
|
|
1483 |
|
1281
|
1484 // XXX FIXME XXX -- making ans_id static, passing its address to |
|
|
1485 // tree_simple_assignment_expression along with a flag to not delete |
|
|
1486 // it seems to create a memory leak. Hmm. |
|
|
1487 |
|
|
1488 tree_simple_assignment_expression tmp_ass (ans_id, tmp, 0, 1); |
|
1162
|
1489 |
|
|
1490 tmp_ass.eval (print); |
|
|
1491 } |
|
|
1492 |
|
593
|
1493 // Give a global variable a definition. This will insert the symbol |
|
|
1494 // in the global table if necessary. |
|
|
1495 |
|
|
1496 // How is this different than install_builtin_variable? Are both |
|
|
1497 // functions needed? |
|
|
1498 |
|
|
1499 void |
|
|
1500 bind_builtin_variable (const char *varname, tree_constant *val, |
|
|
1501 int protect, int eternal, sv_Function sv_fcn, |
|
|
1502 const char *help) |
|
|
1503 { |
|
|
1504 symbol_record *sr = global_sym_tab->lookup (varname, 1, 0); |
|
|
1505 |
|
1271
|
1506 // It is a programming error for a builtin symbol to be missing. |
|
|
1507 // Besides, we just inserted it, so it must be there. |
|
593
|
1508 |
|
|
1509 assert (sr); |
|
|
1510 |
|
|
1511 sr->unprotect (); |
|
|
1512 |
|
1271
|
1513 // Must do this before define, since define will call the special |
|
|
1514 // variable function only if it knows about it, and it needs to, so |
|
|
1515 // that user prefs can be properly initialized. |
|
593
|
1516 |
|
|
1517 if (sv_fcn) |
|
|
1518 sr->set_sv_function (sv_fcn); |
|
|
1519 |
|
|
1520 sr->define_builtin_var (val); |
|
|
1521 |
|
|
1522 if (protect) |
|
|
1523 sr->protect (); |
|
|
1524 |
|
|
1525 if (eternal) |
|
|
1526 sr->make_eternal (); |
|
|
1527 |
|
|
1528 if (help) |
|
1418
|
1529 sr->document (help); |
|
529
|
1530 } |
|
|
1531 |
|
593
|
1532 void |
|
1406
|
1533 bind_builtin_variable (const char *varname, const tree_constant& val, |
|
|
1534 int protect, int eternal, sv_Function sv_fcn, |
|
|
1535 const char *help) |
|
|
1536 { |
|
|
1537 tree_constant *tc = new tree_constant (val); |
|
|
1538 bind_builtin_variable (varname, tc, protect, eternal, sv_fcn, help); |
|
|
1539 } |
|
|
1540 |
|
|
1541 void |
|
593
|
1542 install_builtin_variables (void) |
|
529
|
1543 { |
|
1271
|
1544 // XXX FIXME XX -- these should probably be moved to where they |
|
|
1545 // logically belong instead of being all grouped here. |
|
593
|
1546 |
|
1418
|
1547 DEFVAR ("EDITOR", SBV_EDITOR, editor, 0, sv_editor, |
|
593
|
1548 "name of the editor to be invoked by the edit_history command"); |
|
|
1549 |
|
1418
|
1550 DEFCONST ("I", SBV_I, Complex (0.0, 1.0), 0, 0, |
|
593
|
1551 "sqrt (-1)"); |
|
|
1552 |
|
1418
|
1553 DEFCONST ("Inf", SBV_Inf, octave_Inf, 0, 0, |
|
593
|
1554 "infinity"); |
|
|
1555 |
|
1418
|
1556 DEFVAR ("INFO_FILE", SBV_INFO_FILE, info_file, 0, sv_info_file, |
|
593
|
1557 "name of the Octave info file"); |
|
|
1558 |
|
1418
|
1559 DEFCONST ("J", SBV_J, Complex (0.0, 1.0), 0, 0, |
|
593
|
1560 "sqrt (-1)"); |
|
529
|
1561 |
|
1418
|
1562 DEFCONST ("NaN", SBV_NaN, octave_NaN, 0, 0, |
|
593
|
1563 "not a number"); |
|
|
1564 |
|
1418
|
1565 DEFVAR ("LOADPATH", SBV_LOADPATH, load_path, 0, sv_loadpath, |
|
593
|
1566 "colon separated list of directories to search for scripts"); |
|
|
1567 |
|
1418
|
1568 DEFVAR ("IMAGEPATH", SBV_IMAGEPATH, OCTAVE_IMAGEPATH, 0, |
|
686
|
1569 sv_imagepath, |
|
|
1570 "colon separated list of directories to search for image files"); |
|
|
1571 |
|
1418
|
1572 DEFCONST ("OCTAVE_VERSION", SBV_version, OCTAVE_VERSION, 0, 0, |
|
664
|
1573 "Octave version"); |
|
|
1574 |
|
1418
|
1575 DEFVAR ("PAGER", SBV_PAGER, default_pager (), 0, sv_pager_binary, |
|
593
|
1576 "path to pager binary"); |
|
|
1577 |
|
1418
|
1578 DEFVAR ("PS1", SBV_PS1, "\\s:\\#> ", 0, sv_ps1, |
|
593
|
1579 "primary prompt string"); |
|
|
1580 |
|
1418
|
1581 DEFVAR ("PS2", SBV_PS2, "> ", 0, sv_ps2, |
|
593
|
1582 "secondary prompt string"); |
|
|
1583 |
|
1418
|
1584 DEFVAR ("PS4", SBV_PS4, "+ ", 0, sv_ps4, |
|
1044
|
1585 "string printed before echoed input (enabled by --echo-input)"); |
|
|
1586 |
|
1418
|
1587 DEFCONST ("PWD", SBV_PWD, |
|
|
1588 get_working_directory ("initialize_globals"), 0, sv_pwd, |
|
593
|
1589 "current working directory"); |
|
|
1590 |
|
1418
|
1591 DEFCONST ("SEEK_SET", SBV_SEEK_SET, 0.0, 0, 0, |
|
593
|
1592 "used with fseek to position file relative to the beginning"); |
|
529
|
1593 |
|
1418
|
1594 DEFCONST ("SEEK_CUR", SBV_SEEK_CUR, 1.0, 0, 0, |
|
593
|
1595 "used with fseek to position file relative to the current position"); |
|
|
1596 |
|
1418
|
1597 DEFCONST ("SEEK_END", SBV_SEEK_END, 2.0, 0, 0, |
|
593
|
1598 "used with fseek to position file relative to the end"); |
|
|
1599 |
|
1418
|
1600 DEFVAR ("ans", SBV_ans, , 0, 0, |
|
593
|
1601 ""); |
|
|
1602 |
|
1418
|
1603 DEFCONST ("argv", SBV_argv, , 0, 0, |
|
1343
|
1604 "the command line arguments this program was invoked with"); |
|
|
1605 |
|
661
|
1606 DEFVAR ("automatic_replot", SBV_automatic_replot, "false", |
|
1418
|
1607 0, automatic_replot, |
|
661
|
1608 "if true, auto-insert a replot command when a plot changes"); |
|
|
1609 |
|
1423
|
1610 DEFVAR ("beep_on_error", SBV_beep_on_error, "false", 0, |
|
|
1611 beep_on_error, |
|
|
1612 "if true, beep before printing error messages"); |
|
|
1613 |
|
1429
|
1614 DEFVAR ("completion_append_char", SBV_completion_append_char, " ", |
|
|
1615 0, sv_completion_append_char, |
|
|
1616 "the string to append after successful command-line completion\n\ |
|
|
1617 attempts"); |
|
|
1618 |
|
1093
|
1619 DEFVAR ("default_return_value", SBV_default_return_value, Matrix (), |
|
1418
|
1620 0, 0, |
|
1093
|
1621 "the default for value for unitialized variables returned from\n\ |
|
|
1622 functions. Only used if the variable initialize_return_values is\n\ |
|
|
1623 set to \"true\"."); |
|
593
|
1624 |
|
605
|
1625 DEFVAR ("default_save_format", SBV_default_save_format, "ascii", |
|
1418
|
1626 0, sv_default_save_format, |
|
997
|
1627 "default format for files created with save, may be one of\n\ |
|
1418
|
1628 \"binary\", \"text\", or \"mat-binary\""); |
|
605
|
1629 |
|
1407
|
1630 DEFVAR ("define_all_return_values", SBV_define_all_return_values, |
|
1418
|
1631 "false", 0, define_all_return_values, |
|
1407
|
1632 "control whether values returned from functions should have a\n\ |
|
|
1633 value even if one has not been explicitly assigned. See also\n\ |
|
1418
|
1634 default_return_value"); |
|
1407
|
1635 |
|
1418
|
1636 DEFVAR ("do_fortran_indexing", SBV_do_fortran_indexing, "false", 0, |
|
|
1637 do_fortran_indexing, |
|
593
|
1638 "allow single indices for matrices"); |
|
|
1639 |
|
1418
|
1640 DEFVAR ("empty_list_elements_ok", SBV_empty_list_elements_ok, |
|
|
1641 "warn", 0, empty_list_elements_ok, |
|
593
|
1642 "ignore the empty element in expressions like `a = [[], 1]'"); |
|
529
|
1643 |
|
1418
|
1644 DEFCONST ("eps", SBV_eps, DBL_EPSILON, 0, 0, |
|
593
|
1645 "machine precision"); |
|
|
1646 |
|
1418
|
1647 DEFVAR ("gnuplot_binary", SBV_gnuplot_binary, "gnuplot", 0, |
|
593
|
1648 sv_gnuplot_binary, |
|
|
1649 "path to gnuplot binary"); |
|
|
1650 |
|
1418
|
1651 DEFCONST ("i", SBV_i, Complex (0.0, 1.0), 1, 0, |
|
593
|
1652 "sqrt (-1)"); |
|
529
|
1653 |
|
1418
|
1654 DEFVAR ("ignore_function_time_stamp", |
|
|
1655 SBV_ignore_function_time_stamp, "system", 0, |
|
593
|
1656 ignore_function_time_stamp, |
|
|
1657 "don't check to see if function files have changed since they were\n\ |
|
|
1658 last compiled. Possible values are \"system\" and \"all\""); |
|
|
1659 |
|
1418
|
1660 DEFVAR ("implicit_str_to_num_ok", SBV_implicit_str_to_num_ok, |
|
|
1661 "false", 0, implicit_str_to_num_ok, |
|
593
|
1662 "allow implicit string to number conversion"); |
|
|
1663 |
|
1418
|
1664 DEFCONST ("inf", SBV_inf, octave_Inf, 0, 0, |
|
593
|
1665 "infinity"); |
|
|
1666 |
|
1418
|
1667 DEFCONST ("j", SBV_j, Complex (0.0, 1.0), 1, 0, |
|
593
|
1668 "sqrt (-1)"); |
|
529
|
1669 |
|
1418
|
1670 DEFCONST ("nan", SBV_nan, octave_NaN, 0, 0, |
|
593
|
1671 "not a number"); |
|
|
1672 |
|
|
1673 DEFVAR ("ok_to_lose_imaginary_part", SBV_ok_to_lose_imaginary_part, |
|
1418
|
1674 "warn", 0, ok_to_lose_imaginary_part, |
|
593
|
1675 "silently convert from complex to real by dropping imaginary part"); |
|
|
1676 |
|
1418
|
1677 DEFVAR ("output_max_field_width", SBV_output_max_field_width, 10.0, |
|
|
1678 0, set_output_max_field_width, |
|
593
|
1679 "maximum width of an output field for numeric output"); |
|
|
1680 |
|
1418
|
1681 DEFVAR ("output_precision", SBV_output_precision, 5.0, 0, |
|
593
|
1682 set_output_precision, |
|
|
1683 "number of significant figures to display for numeric output"); |
|
|
1684 |
|
1418
|
1685 DEFVAR ("page_screen_output", SBV_page_screen_output, "true", 0, |
|
593
|
1686 page_screen_output, |
|
|
1687 "if possible, send output intended for the screen through the pager"); |
|
529
|
1688 |
|
1418
|
1689 DEFCONST ("pi", SBV_pi, 4.0 * atan (1.0), 0, 0, |
|
593
|
1690 "ratio of the circumference of a circle to its diameter"); |
|
|
1691 |
|
1418
|
1692 DEFVAR ("prefer_column_vectors", SBV_prefer_column_vectors, "true", |
|
|
1693 0, prefer_column_vectors, |
|
593
|
1694 "prefer column/row vectors"); |
|
|
1695 |
|
|
1696 DEFVAR ("prefer_zero_one_indexing", SBV_prefer_zero_one_indexing, |
|
1418
|
1697 "false", 0, prefer_zero_one_indexing, |
|
593
|
1698 "when there is a conflict, prefer zero-one style indexing"); |
|
|
1699 |
|
|
1700 DEFVAR ("print_answer_id_name", SBV_print_answer_id_name, "true", 0, |
|
1418
|
1701 print_answer_id_name, |
|
593
|
1702 "set output style to print `var_name = ...'"); |
|
|
1703 |
|
1418
|
1704 DEFVAR ("print_empty_dimensions", SBV_print_empty_dimensions, |
|
|
1705 "true", 0, print_empty_dimensions, |
|
593
|
1706 "also print dimensions of empty matrices"); |
|
|
1707 |
|
1418
|
1708 DEFCONST ("program_invocation_name", SBV_program_invocation_name, |
|
|
1709 raw_prog_name, 0, 0, |
|
1343
|
1710 "the full name of the current program or script, including the\n\ |
|
|
1711 directory specification"); |
|
|
1712 |
|
1418
|
1713 DEFCONST ("program_name", SBV_program_name, prog_name, 0, 0, |
|
1343
|
1714 "the name of the current program or script"); |
|
|
1715 |
|
593
|
1716 DEFVAR ("propagate_empty_matrices", SBV_propagate_empty_matrices, |
|
1418
|
1717 "true", 0, propagate_empty_matrices, |
|
593
|
1718 "operations on empty matrices return an empty matrix, not an error"); |
|
529
|
1719 |
|
1045
|
1720 #if 0 |
|
|
1721 DEFVAR ("read_only_constants", SBV_read_only_constants, "true", 0, |
|
1418
|
1722 read_only_constants, |
|
1045
|
1723 "allow built-in constants to be modified"); |
|
|
1724 #endif |
|
|
1725 |
|
1418
|
1726 DEFCONST ("realmax", SBV_realmax, DBL_MAX, 0, 0, |
|
868
|
1727 "realmax (): return largest representable floating point number"); |
|
|
1728 |
|
1418
|
1729 DEFCONST ("realmin", SBV_realmin, DBL_MIN, 0, 0, |
|
868
|
1730 "realmin (): return smallest representable floating point number"); |
|
|
1731 |
|
1418
|
1732 DEFVAR ("resize_on_range_error", SBV_resize_on_range_error, "true", |
|
|
1733 0, resize_on_range_error, |
|
593
|
1734 "enlarge matrices on assignment"); |
|
|
1735 |
|
1418
|
1736 DEFVAR ("return_last_computed_value", |
|
|
1737 SBV_return_last_computed_value, "false", 0, |
|
593
|
1738 return_last_computed_value, |
|
|
1739 "if a function does not return any values explicitly, return the\n\ |
|
|
1740 last computed value"); |
|
|
1741 |
|
1418
|
1742 DEFVAR ("save_precision", SBV_save_precision, 17.0, 0, |
|
593
|
1743 set_save_precision, |
|
|
1744 "number of significant figures kept by the ASCII save command"); |
|
|
1745 |
|
1418
|
1746 DEFVAR ("silent_functions", SBV_silent_functions, "false", 0, |
|
593
|
1747 silent_functions, |
|
|
1748 "suppress printing results in called functions"); |
|
|
1749 |
|
1418
|
1750 DEFVAR ("split_long_rows", SBV_split_long_rows, "true", 0, |
|
593
|
1751 split_long_rows, |
|
|
1752 "split long matrix rows instead of wrapping"); |
|
529
|
1753 |
|
1198
|
1754 DEFVAR ("struct_levels_to_print", SBV_struct_levels_to_print, 2.0, |
|
1418
|
1755 0, struct_levels_to_print, |
|
1198
|
1756 "number of levels of structure elements to print"); |
|
|
1757 |
|
1139
|
1758 #ifdef USE_GNU_INFO |
|
1116
|
1759 DEFVAR ("suppress_verbose_help_message", |
|
1418
|
1760 SBV_suppress_verbose_help_message, "false", 0, |
|
1116
|
1761 suppress_verbose_help_message, |
|
|
1762 "suppress printing of message pointing to additional help in the\n\ |
|
|
1763 help and usage functions"); |
|
1139
|
1764 #endif |
|
1116
|
1765 |
|
1418
|
1766 DEFCONST ("stdin", SBV_stdin, 0.0, 0, 0, |
|
593
|
1767 "file number of the standard input stream"); |
|
|
1768 |
|
1418
|
1769 DEFCONST ("stdout", SBV_stdout, 1.0, 0, 0, |
|
593
|
1770 "file number of the standard output stream"); |
|
|
1771 |
|
1418
|
1772 DEFCONST ("stderr", SBV_stderr, 2.0, 0, 0, |
|
593
|
1773 "file number of the standard error stream"); |
|
|
1774 |
|
|
1775 DEFVAR ("treat_neg_dim_as_zero", SBV_treat_neg_dim_as_zero, "false", |
|
1418
|
1776 0, treat_neg_dim_as_zero, |
|
593
|
1777 "convert negative dimensions to zero"); |
|
|
1778 |
|
1418
|
1779 DEFVAR ("warn_assign_as_truth_value", |
|
|
1780 SBV_warn_assign_as_truth_value, "true", 0, |
|
593
|
1781 warn_assign_as_truth_value, |
|
|
1782 "produce warning for assignments used as truth values"); |
|
|
1783 |
|
|
1784 DEFVAR ("warn_comma_in_global_decl", SBV_warn_comma_in_global_decl, |
|
1418
|
1785 "true", 0, warn_comma_in_global_decl, |
|
593
|
1786 "produce warning for commas in global declarations"); |
|
|
1787 |
|
1418
|
1788 DEFVAR ("warn_divide_by_zero", SBV_warn_divide_by_zero, "true", 0, |
|
|
1789 warn_divide_by_zero, |
|
593
|
1790 "on IEEE machines, allow divide by zero errors to be suppressed"); |
|
1037
|
1791 |
|
|
1792 DEFVAR ("warn_function_name_clash", SBV_warn_function_name_clash, |
|
1418
|
1793 "true", 0, warn_function_name_clash, |
|
1037
|
1794 "produce warning if function name conflicts with file name"); |
|
1093
|
1795 |
|
1418
|
1796 DEFVAR ("whitespace_in_literal_matrix", |
|
|
1797 SBV_whitespace_in_literal_matrix, "", 0, |
|
|
1798 whitespace_in_literal_matrix, |
|
1093
|
1799 "control auto-insertion of commas and semicolons in literal matrices"); |
|
529
|
1800 } |
|
|
1801 |
|
593
|
1802 // Deleting names from the symbol tables. |
|
|
1803 |
|
|
1804 DEFUN_TEXT ("clear", Fclear, Sclear, -1, 1, |
|
668
|
1805 "clear [-x] [name ...]\n\ |
|
|
1806 \n\ |
|
|
1807 Clear symbol(s) matching a list of globbing patterns.\n\ |
|
593
|
1808 \n\ |
|
668
|
1809 If no arguments are given, clear all user-defined variables and |
|
|
1810 functions.\n\ |
|
|
1811 \n\ |
|
|
1812 With -x, exclude the named variables") |
|
529
|
1813 { |
|
593
|
1814 Octave_object retval; |
|
|
1815 |
|
|
1816 DEFINE_ARGV("clear"); |
|
|
1817 |
|
668
|
1818 argc--; |
|
|
1819 argv++; |
|
|
1820 |
|
1271
|
1821 // Always clear the local table, but don't clear currently compiled |
|
|
1822 // functions unless we are at the top level. (Allowing that to |
|
|
1823 // happen inside functions would result in pretty odd behavior...) |
|
593
|
1824 |
|
|
1825 int clear_user_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1826 |
|
668
|
1827 if (argc == 0) |
|
593
|
1828 { |
|
|
1829 curr_sym_tab->clear (); |
|
|
1830 global_sym_tab->clear (clear_user_functions); |
|
|
1831 } |
|
529
|
1832 else |
|
|
1833 { |
|
668
|
1834 int exclusive = 0; |
|
|
1835 |
|
|
1836 if (argc > 0) |
|
|
1837 { |
|
|
1838 if (strcmp (*argv, "-x") == 0) |
|
|
1839 { |
|
|
1840 exclusive = 1; |
|
|
1841 argv++; |
|
|
1842 argc--; |
|
|
1843 } |
|
|
1844 } |
|
|
1845 |
|
|
1846 int lcount = 0; |
|
|
1847 int gcount = 0; |
|
|
1848 int fcount = 0; |
|
529
|
1849 |
|
668
|
1850 char **lvars = 0; |
|
|
1851 char **gvars = 0; |
|
|
1852 char **fcns = 0; |
|
|
1853 |
|
|
1854 if (argc > 0) |
|
593
|
1855 { |
|
893
|
1856 lvars = curr_sym_tab->list (lcount, 0, 0, 0, |
|
1418
|
1857 SYMTAB_VARIABLES, |
|
668
|
1858 SYMTAB_LOCAL_SCOPE); |
|
|
1859 |
|
893
|
1860 gvars = curr_sym_tab->list (gcount, 0, 0, 0, |
|
1418
|
1861 SYMTAB_VARIABLES, |
|
668
|
1862 SYMTAB_GLOBAL_SCOPE); |
|
|
1863 |
|
893
|
1864 fcns = global_sym_tab->list (fcount, 0, 0, 0, |
|
|
1865 symbol_def::USER_FUNCTION, |
|
864
|
1866 SYMTAB_ALL_SCOPES); |
|
668
|
1867 } |
|
|
1868 |
|
|
1869 while (argc > 0) |
|
|
1870 { |
|
|
1871 char *pat = *argv; |
|
|
1872 |
|
|
1873 if (pat) |
|
593
|
1874 { |
|
|
1875 int i; |
|
|
1876 for (i = 0; i < lcount; i++) |
|
|
1877 { |
|
668
|
1878 char *nm = lvars[i]; |
|
|
1879 int match = (fnmatch (pat, nm, __FNM_FLAGS) == 0); |
|
|
1880 if ((exclusive && ! match) || (! exclusive && match)) |
|
|
1881 curr_sym_tab->clear (nm); |
|
593
|
1882 } |
|
529
|
1883 |
|
593
|
1884 int count; |
|
|
1885 for (i = 0; i < gcount; i++) |
|
|
1886 { |
|
668
|
1887 char *nm = gvars[i]; |
|
|
1888 int match = (fnmatch (pat, nm, __FNM_FLAGS) == 0); |
|
|
1889 if ((exclusive && ! match) || (! exclusive && match)) |
|
593
|
1890 { |
|
668
|
1891 count = curr_sym_tab->clear (nm); |
|
593
|
1892 if (count > 0) |
|
668
|
1893 global_sym_tab->clear (nm, clear_user_functions); |
|
593
|
1894 } |
|
|
1895 } |
|
529
|
1896 |
|
593
|
1897 for (i = 0; i < fcount; i++) |
|
|
1898 { |
|
668
|
1899 char *nm = fcns[i]; |
|
|
1900 int match = (fnmatch (pat, nm, __FNM_FLAGS) == 0); |
|
|
1901 if ((exclusive && ! match) || (! exclusive && match)) |
|
593
|
1902 { |
|
668
|
1903 count = curr_sym_tab->clear (nm); |
|
864
|
1904 global_sym_tab->clear (nm, clear_user_functions); |
|
593
|
1905 } |
|
|
1906 } |
|
|
1907 } |
|
668
|
1908 |
|
|
1909 argc--; |
|
|
1910 argv++; |
|
593
|
1911 } |
|
529
|
1912 |
|
593
|
1913 delete [] lvars; |
|
|
1914 delete [] gvars; |
|
|
1915 delete [] fcns; |
|
|
1916 |
|
|
1917 } |
|
|
1918 |
|
|
1919 DELETE_ARGV; |
|
|
1920 |
|
|
1921 return retval; |
|
529
|
1922 } |
|
|
1923 |
|
1
|
1924 /* |
|
|
1925 ;;; Local Variables: *** |
|
|
1926 ;;; mode: C++ *** |
|
|
1927 ;;; page-delimiter: "^/\\*" *** |
|
|
1928 ;;; End: *** |
|
|
1929 */ |
