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1
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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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1315
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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240
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23 #ifdef HAVE_CONFIG_H |
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1192
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24 #include <config.h> |
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1
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25 #endif |
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26 |
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1468
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27 #include <cstdio> |
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1343
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28 #include <cstring> |
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605
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29 |
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1728
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30 #include <string> |
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31 |
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2926
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32 #include "file-stat.h" |
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33 #include "oct-env.h" |
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34 #include "glob-match.h" |
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1755
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35 #include "str-vec.h" |
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36 |
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2492
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37 #include <defaults.h> |
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1352
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38 #include "defun.h" |
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39 #include "dirfns.h" |
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40 #include "error.h" |
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2205
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41 #include "gripes.h" |
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1352
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42 #include "help.h" |
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3165
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43 #include "input.h" |
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1352
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44 #include "lex.h" |
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2926
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45 #include "oct-map.h" |
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46 #include "oct-obj.h" |
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47 #include "ov.h" |
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605
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48 #include "pager.h" |
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1352
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49 #include "parse.h" |
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2926
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50 #include "symtab.h" |
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2205
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51 #include "toplev.h" |
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1352
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52 #include "unwind-prot.h" |
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1
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53 #include "utils.h" |
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1352
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54 #include "variables.h" |
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2205
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55 |
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56 // Should Octave always check to see if function files have changed |
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57 // since they were last compiled? |
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2806
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58 static int Vignore_function_time_stamp; |
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2205
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59 |
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1
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60 // Symbol table for symbols at the top level. |
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581
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61 symbol_table *top_level_sym_tab = 0; |
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1
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62 |
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63 // Symbol table for the current scope. |
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581
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64 symbol_table *curr_sym_tab = 0; |
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65 |
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66 // Symbol table for global symbols. |
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581
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67 symbol_table *global_sym_tab = 0; |
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1
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68 |
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593
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69 // Initialization. |
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70 |
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71 // Create the initial symbol tables and set the current scope at the |
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72 // top level. |
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73 |
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195
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74 void |
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75 initialize_symbol_tables (void) |
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76 { |
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581
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77 if (! global_sym_tab) |
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3005
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78 global_sym_tab = new symbol_table (2048); |
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195
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79 |
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581
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80 if (! top_level_sym_tab) |
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3005
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81 top_level_sym_tab = new symbol_table (4096); |
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195
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82 |
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83 curr_sym_tab = top_level_sym_tab; |
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84 } |
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85 |
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593
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86 // Attributes of variables and functions. |
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87 |
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88 // Is this variable a builtin? |
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89 |
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1827
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90 bool |
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3523
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91 is_builtin_variable (const std::string& name) |
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593
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92 { |
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2856
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93 symbol_record *sr = global_sym_tab->lookup (name); |
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593
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94 return (sr && sr->is_builtin_variable ()); |
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95 } |
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96 |
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97 // Is this a text-style function? |
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98 |
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1827
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99 bool |
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3523
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100 is_text_function_name (const std::string& s) |
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593
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101 { |
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102 symbol_record *sr = global_sym_tab->lookup (s); |
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103 return (sr && sr->is_text_function ()); |
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104 } |
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105 |
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3355
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106 // Is this a built-in function? |
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2294
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107 |
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108 bool |
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3523
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109 is_builtin_function_name (const std::string& s) |
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2294
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110 { |
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111 symbol_record *sr = global_sym_tab->lookup (s); |
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112 return (sr && sr->is_builtin_function ()); |
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113 } |
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114 |
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115 // Is this a mapper function? |
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116 |
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117 bool |
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3523
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118 is_mapper_function_name (const std::string& s) |
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2294
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119 { |
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120 symbol_record *sr = global_sym_tab->lookup (s); |
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121 return (sr && sr->is_mapper_function ()); |
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122 } |
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123 |
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593
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124 // Is this function globally in this scope? |
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125 |
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1827
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126 bool |
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3523
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127 is_globally_visible (const std::string& name) |
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593
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128 { |
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129 symbol_record *sr = curr_sym_tab->lookup (name); |
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593
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130 return (sr && sr->is_linked_to_global ()); |
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131 } |
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132 |
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2086
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133 // Is this octave_value a valid function? |
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593
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134 |
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2975
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135 octave_function * |
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3523
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136 is_valid_function (const std::string& fcn_name, const std::string& warn_for, bool warn) |
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593
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137 { |
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2975
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138 octave_function *ans = 0; |
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593
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139 |
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140 symbol_record *sr = 0; |
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141 |
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142 if (! fcn_name.empty ()) |
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3618
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143 { |
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144 sr = global_sym_tab->lookup (fcn_name, true); |
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145 |
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146 lookup (sr, false); |
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147 } |
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593
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148 |
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149 if (sr) |
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2975
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150 { |
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151 octave_value tmp = sr->def (); |
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152 ans = tmp.function_value (true); |
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153 } |
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593
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154 |
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155 if (! sr || ! ans || ! sr->is_function ()) |
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156 { |
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157 if (warn) |
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158 error ("%s: the symbol `%s' is not valid as a function", |
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1755
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159 warn_for.c_str (), fcn_name.c_str ()); |
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593
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160 ans = 0; |
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161 } |
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162 |
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163 return ans; |
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164 } |
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165 |
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2975
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166 octave_function * |
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3523
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167 is_valid_function (const octave_value& arg, const std::string& warn_for, bool warn) |
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3178
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168 { |
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169 octave_function *ans = 0; |
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170 |
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3523
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171 std::string fcn_name; |
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3178
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172 |
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173 if (arg.is_string ()) |
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174 fcn_name = arg.string_value (); |
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175 |
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176 if (! error_state) |
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177 ans = is_valid_function (fcn_name, warn_for, warn); |
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178 else if (warn) |
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179 error ("%s: expecting function name as argument", warn_for.c_str ()); |
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180 |
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181 return ans; |
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182 } |
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183 |
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184 octave_function * |
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3523
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185 extract_function (const octave_value& arg, const std::string& warn_for, |
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186 const std::string& fname, const std::string& header, |
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187 const std::string& trailer) |
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2796
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188 { |
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2975
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189 octave_function *retval = 0; |
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2796
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190 |
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191 retval = is_valid_function (arg, warn_for, 0); |
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192 |
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193 if (! retval) |
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194 { |
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3523
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195 std::string s = arg.string_value (); |
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2796
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196 |
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3523
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197 std::string cmd = header; |
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2796
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198 cmd.append (s); |
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199 cmd.append (trailer); |
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200 |
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201 if (! error_state) |
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202 { |
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203 int parse_status; |
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204 |
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2898
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205 eval_string (cmd, true, parse_status); |
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2796
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206 |
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207 if (parse_status == 0) |
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208 { |
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209 retval = is_valid_function (fname, warn_for, 0); |
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210 |
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211 if (! retval) |
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212 { |
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213 error ("%s: `%s' is not valid as a function", |
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214 warn_for.c_str (), fname.c_str ()); |
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215 return retval; |
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216 } |
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217 } |
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218 else |
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219 error ("%s: `%s' is not valid as a function", |
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220 warn_for.c_str (), fname.c_str ()); |
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221 } |
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222 else |
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223 error ("%s: expecting first argument to be a string", |
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224 warn_for.c_str ()); |
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225 } |
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226 |
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227 return retval; |
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228 } |
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229 |
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2921
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230 string_vector |
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3523
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231 get_struct_elts (const std::string& text) |
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2921
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232 { |
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233 int n = 1; |
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234 |
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235 size_t pos = 0; |
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236 |
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237 size_t len = text.length (); |
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238 |
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239 while ((pos = text.find ('.', pos)) != NPOS) |
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240 { |
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241 if (++pos == len) |
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242 break; |
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243 |
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244 n++; |
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245 } |
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246 |
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247 string_vector retval (n); |
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248 |
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249 pos = 0; |
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250 |
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251 for (int i = 0; i < n; i++) |
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252 { |
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253 size_t len = text.find ('.', pos); |
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254 |
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255 if (len != NPOS) |
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256 len -= pos; |
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257 |
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258 retval[i] = text.substr (pos, len); |
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259 |
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260 if (len != NPOS) |
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261 pos += len + 1; |
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262 } |
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263 |
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264 return retval; |
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265 } |
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266 |
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267 string_vector |
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3523
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268 generate_struct_completions (const std::string& text, std::string& prefix, std::string& hint) |
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2921
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269 { |
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270 string_vector names; |
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271 |
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272 size_t pos = text.rfind ('.'); |
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273 |
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3523
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274 std::string id; |
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2921
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275 string_vector elts; |
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276 |
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277 if (pos == NPOS) |
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278 { |
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279 hint = text; |
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280 prefix = text; |
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281 elts.resize (1, text); |
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282 } |
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283 else |
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284 { |
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285 if (pos == text.length ()) |
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286 hint = ""; |
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287 else |
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288 hint = text.substr (pos+1); |
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289 |
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290 prefix = text.substr (0, pos); |
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291 |
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292 elts = get_struct_elts (prefix); |
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293 } |
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294 |
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295 id = elts[0]; |
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296 |
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297 symbol_record *sr = curr_sym_tab->lookup (id); |
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298 |
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299 if (! sr) |
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300 sr = global_sym_tab->lookup (id); |
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301 |
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302 if (sr && sr->is_defined ()) |
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303 { |
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2975
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304 octave_value tmp = sr->def (); |
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2921
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305 |
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2963
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306 // XXX FIXME XXX -- make this work for all types that can do |
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307 // structure reference operations. |
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2975
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308 if (tmp.is_map ()) |
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2921
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309 { |
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310 for (int i = 1; i < elts.length (); i++) |
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311 { |
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2975
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312 tmp = tmp.do_struct_elt_index_op (elts[i], true); |
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2921
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313 |
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2975
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314 if (! tmp.is_map ()) |
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2921
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315 break; |
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316 } |
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317 |
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2975
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318 if (tmp.is_map ()) |
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2921
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319 { |
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2975
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320 Octave_map m = tmp.map_value (); |
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2921
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321 |
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322 names = m.make_name_list (); |
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323 } |
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324 } |
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325 } |
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326 |
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327 return names; |
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328 } |
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329 |
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330 bool |
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3523
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331 looks_like_struct (const std::string& text) |
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2921
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332 { |
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333 bool retval = true; |
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334 |
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335 string_vector elts = get_struct_elts (text); |
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336 |
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3523
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337 std::string id = elts[0]; |
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2921
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338 |
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339 symbol_record *sr = curr_sym_tab->lookup (id); |
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340 |
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341 if (! sr) |
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342 sr = global_sym_tab->lookup (id); |
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343 |
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344 if (sr && sr->is_defined ()) |
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345 { |
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2975
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346 octave_value tmp = sr->def (); |
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2921
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347 |
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2963
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348 // XXX FIXME XXX -- should this work for all types that can do |
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349 // structure reference operations? |
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350 |
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2975
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351 if (tmp.is_map ()) |
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2921
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352 { |
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353 for (int i = 1; i < elts.length (); i++) |
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354 { |
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2975
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355 tmp = tmp.do_struct_elt_index_op (elts[i], true); |
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2921
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356 |
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2975
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357 if (! tmp.is_map ()) |
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2921
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358 { |
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359 retval = false; |
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360 break; |
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361 } |
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362 } |
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363 } |
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364 else |
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365 retval = false; |
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366 } |
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367 else |
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368 retval = false; |
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369 |
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370 return retval; |
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371 } |
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2796
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372 |
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1957
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373 DEFUN (is_global, args, , |
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3361
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374 "-*- texinfo -*-\n\ |
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375 @deftypefn {Built-in Function} {} is_global (@var{name})\n\ |
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376 Return 1 if @var{name} is globally visible. Otherwise, return 0. For\n\ |
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377 example,\n\ |
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378 \n\ |
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379 @example\n\ |
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380 @group\n\ |
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381 global x\n\ |
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382 is_global (\"x\")\n\ |
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383 @result{} 1\n\ |
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384 @end group\n\ |
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385 @end example\n\ |
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386 @end deftypefn") |
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593
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387 { |
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2086
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388 octave_value_list retval = 0.0; |
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593
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389 |
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712
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390 int nargin = args.length (); |
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391 |
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392 if (nargin != 1) |
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593
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393 { |
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394 print_usage ("is_global"); |
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395 return retval; |
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396 } |
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397 |
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3523
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398 std::string name = args(0).string_value (); |
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593
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399 |
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636
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400 if (error_state) |
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401 { |
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3523
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402 error ("is_global: expecting std::string argument"); |
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636
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403 return retval; |
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404 } |
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405 |
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2856
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406 symbol_record *sr = curr_sym_tab->lookup (name); |
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593
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407 |
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2800
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408 retval = static_cast<double> (sr && sr->is_linked_to_global ()); |
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593
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409 |
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410 return retval; |
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411 } |
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412 |
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1957
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413 DEFUN (exist, args, , |
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3361
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414 "-*- texinfo -*-\n\ |
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415 @deftypefn {Built-in Function} {} exist (@var{name})\n\ |
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416 Return 1 if the name exists as a variable, 2 if the name (after\n\ |
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417 appending @samp{.m}) is a function file in the path, 3 if the name is a\n\ |
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3476
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418 @samp{.oct} file in the path, 5 if the name is a built-in function, or\n\ |
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419 6 is the name is a built-in constant. Otherwise, return 0.\n\ |
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1564
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420 \n\ |
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3361
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421 This function also returns 2 if a regular file called @var{name}\n\ |
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422 exists in Octave's @code{LOADPATH}. If you want information about\n\ |
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423 other types of files, you should use some combination of the functions\n\ |
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424 @code{file_in_path} and @code{stat} instead.\n\ |
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425 @end deftypefn") |
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593
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426 { |
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2086
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427 octave_value_list retval; |
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593
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428 |
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712
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429 int nargin = args.length (); |
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430 |
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431 if (nargin != 1) |
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593
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432 { |
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433 print_usage ("exist"); |
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434 return retval; |
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435 } |
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436 |
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3523
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437 std::string name = args(0).string_value (); |
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593
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438 |
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636
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439 if (error_state) |
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440 { |
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3523
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441 error ("exist: expecting std::string argument"); |
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636
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442 return retval; |
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443 } |
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444 |
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3523
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445 std::string struct_elts; |
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446 std::string symbol_name = name; |
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1755
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447 |
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448 size_t pos = name.find ('.'); |
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449 |
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2790
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450 if (pos != NPOS && pos > 0) |
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1277
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451 { |
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1755
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452 struct_elts = name.substr (pos+1); |
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2790
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453 symbol_name = name.substr (0, pos); |
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1277
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454 } |
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455 |
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2856
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456 symbol_record *sr = curr_sym_tab->lookup (symbol_name); |
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3238
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457 if (! (sr && (sr->is_defined () |
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458 || (curr_sym_tab != top_level_sym_tab)))) |
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2856
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459 sr = global_sym_tab->lookup (symbol_name); |
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593
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460 |
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461 retval = 0.0; |
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462 |
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463 if (sr && sr->is_variable () && sr->is_defined ()) |
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1277
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464 { |
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2390
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465 if (struct_elts.empty () || sr->is_map_element (struct_elts)) |
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466 retval = 1.0; |
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1277
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467 } |
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1421
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468 else if (sr && sr->is_builtin_function ()) |
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469 { |
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470 retval = 5.0; |
|
|
471 } |
|
3476
|
472 else if (sr && sr->is_builtin_constant ()) |
|
|
473 { |
|
|
474 retval = 6.0; |
|
|
475 } |
|
1421
|
476 else if (sr && sr->is_user_function ()) |
|
|
477 { |
|
|
478 retval = 2.0; |
|
|
479 } |
|
593
|
480 else |
|
|
481 { |
|
3523
|
482 std::string path = fcn_file_in_path (name); |
|
1755
|
483 |
|
|
484 if (path.length () > 0) |
|
593
|
485 { |
|
|
486 retval = 2.0; |
|
|
487 } |
|
|
488 else |
|
|
489 { |
|
1421
|
490 path = oct_file_in_path (name); |
|
1755
|
491 |
|
|
492 if (path.length () > 0) |
|
1421
|
493 { |
|
|
494 retval = 3.0; |
|
|
495 } |
|
|
496 else |
|
|
497 { |
|
3523
|
498 std::string file_name = file_in_path (name, ""); |
|
1766
|
499 |
|
3096
|
500 if (! file_name.empty ()) |
|
|
501 { |
|
|
502 file_stat fs (file_name); |
|
|
503 |
|
|
504 if (fs && fs.is_reg ()) |
|
|
505 retval = 2.0; |
|
|
506 } |
|
1421
|
507 } |
|
593
|
508 } |
|
|
509 } |
|
|
510 |
|
|
511 return retval; |
|
|
512 } |
|
|
513 |
|
581
|
514 // Is there a corresponding function file that is newer than the |
|
|
515 // symbol definition? |
|
|
516 |
|
2926
|
517 static bool |
|
1
|
518 symbol_out_of_date (symbol_record *sr) |
|
|
519 { |
|
2926
|
520 bool retval = false; |
|
195
|
521 |
|
2926
|
522 if (Vignore_function_time_stamp != 2 && sr) |
|
1
|
523 { |
|
2975
|
524 octave_value ans = sr->def (); |
|
|
525 |
|
3022
|
526 octave_function *tmp = ans.function_value (true); |
|
2975
|
527 |
|
3022
|
528 if (tmp) |
|
|
529 { |
|
3523
|
530 std::string ff = tmp->fcn_file_name (); |
|
1755
|
531 |
|
3022
|
532 if (! (ff.empty () |
|
|
533 || (Vignore_function_time_stamp |
|
|
534 && tmp->is_system_fcn_file ()))) |
|
|
535 { |
|
3165
|
536 if (tmp->time_checked () < Vlast_prompt_time) |
|
|
537 { |
|
|
538 time_t tp = tmp->time_parsed (); |
|
2975
|
539 |
|
3523
|
540 std::string fname; |
|
3325
|
541 |
|
|
542 if (tmp->is_dld_function ()) |
|
|
543 fname = ff; |
|
|
544 else |
|
|
545 fname = fcn_file_in_path (ff); |
|
1755
|
546 |
|
3255
|
547 tmp->mark_fcn_file_up_to_date (octave_time ()); |
|
3165
|
548 |
|
|
549 file_stat fs (fname); |
|
3022
|
550 |
|
3165
|
551 if (fs && fs.is_newer (tp)) |
|
|
552 retval = true; |
|
|
553 } |
|
1
|
554 } |
|
|
555 } |
|
|
556 } |
|
2926
|
557 |
|
|
558 return retval; |
|
1
|
559 } |
|
|
560 |
|
1827
|
561 bool |
|
2856
|
562 lookup (symbol_record *sym_rec, bool exec_script) |
|
581
|
563 { |
|
1827
|
564 bool script_executed = false; |
|
581
|
565 |
|
|
566 if (! sym_rec->is_linked_to_global ()) |
|
|
567 { |
|
|
568 if (sym_rec->is_defined ()) |
|
|
569 { |
|
|
570 if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
571 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
572 } |
|
|
573 else if (! sym_rec->is_formal_parameter ()) |
|
|
574 { |
|
|
575 link_to_builtin_or_function (sym_rec); |
|
1271
|
576 |
|
581
|
577 if (! sym_rec->is_defined ()) |
|
1271
|
578 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
579 else if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
580 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
581 } |
|
|
582 } |
|
|
583 |
|
1271
|
584 return script_executed; |
|
581
|
585 } |
|
|
586 |
|
|
587 // Get the symbol record for the given name that is visible in the |
|
|
588 // current scope. Reread any function definitions that appear to be |
|
|
589 // out of date. If a function is available in a file but is not |
|
|
590 // currently loaded, this will load it and insert the name in the |
|
|
591 // current symbol table. |
|
|
592 |
|
|
593 symbol_record * |
|
3523
|
594 lookup_by_name (const std::string& nm, bool exec_script) |
|
581
|
595 { |
|
2856
|
596 symbol_record *sym_rec = curr_sym_tab->lookup (nm, true); |
|
581
|
597 |
|
|
598 lookup (sym_rec, exec_script); |
|
|
599 |
|
|
600 return sym_rec; |
|
|
601 } |
|
|
602 |
|
2849
|
603 octave_value |
|
3523
|
604 get_global_value (const std::string& nm) |
|
2849
|
605 { |
|
|
606 octave_value retval; |
|
|
607 |
|
|
608 symbol_record *sr = global_sym_tab->lookup (nm); |
|
|
609 |
|
|
610 if (sr) |
|
|
611 { |
|
2975
|
612 octave_value sr_def = sr->def (); |
|
2849
|
613 |
|
2975
|
614 if (sr_def.is_undefined ()) |
|
2849
|
615 error ("get_global_by_name: undefined symbol `%s'", nm.c_str ()); |
|
3088
|
616 else |
|
|
617 retval = sr_def; |
|
2849
|
618 } |
|
|
619 else |
|
|
620 error ("get_global_by_name: unknown symbol `%s'", nm.c_str ()); |
|
|
621 |
|
|
622 return retval; |
|
|
623 } |
|
|
624 |
|
|
625 void |
|
3523
|
626 set_global_value (const std::string& nm, const octave_value& val) |
|
2849
|
627 { |
|
2856
|
628 symbol_record *sr = global_sym_tab->lookup (nm, true); |
|
2849
|
629 |
|
|
630 if (sr) |
|
|
631 sr->define (val); |
|
|
632 else |
|
|
633 panic_impossible (); |
|
|
634 } |
|
|
635 |
|
593
|
636 // Variable values. |
|
195
|
637 |
|
581
|
638 // Look for the given name in the global symbol table. If it refers |
|
|
639 // to a string, return a new copy. If not, return 0; |
|
|
640 |
|
3523
|
641 std::string |
|
|
642 builtin_string_variable (const std::string& name) |
|
1
|
643 { |
|
2856
|
644 symbol_record *sr = global_sym_tab->lookup (name); |
|
195
|
645 |
|
1271
|
646 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
647 |
|
529
|
648 assert (sr); |
|
195
|
649 |
|
3523
|
650 std::string retval; |
|
1
|
651 |
|
2975
|
652 octave_value val = sr->def (); |
|
195
|
653 |
|
2975
|
654 if (! error_state && val.is_string ()) |
|
|
655 retval = val.string_value (); |
|
1
|
656 |
|
|
657 return retval; |
|
|
658 } |
|
|
659 |
|
581
|
660 // Look for the given name in the global symbol table. If it refers |
|
1504
|
661 // to a real scalar, place the value in d and return 1. Otherwise, |
|
|
662 // return 0. |
|
581
|
663 |
|
1
|
664 int |
|
3523
|
665 builtin_real_scalar_variable (const std::string& name, double& d) |
|
1
|
666 { |
|
1504
|
667 int status = 0; |
|
2856
|
668 symbol_record *sr = global_sym_tab->lookup (name); |
|
195
|
669 |
|
1271
|
670 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
671 |
|
529
|
672 assert (sr); |
|
1
|
673 |
|
2975
|
674 octave_value val = sr->def (); |
|
195
|
675 |
|
2975
|
676 if (! error_state && val.is_scalar_type ()) |
|
|
677 { |
|
|
678 d = val.double_value (); |
|
|
679 status = 1; |
|
1
|
680 } |
|
|
681 |
|
|
682 return status; |
|
|
683 } |
|
|
684 |
|
1093
|
685 // Look for the given name in the global symbol table. |
|
|
686 |
|
2086
|
687 octave_value |
|
3523
|
688 builtin_any_variable (const std::string& name) |
|
1093
|
689 { |
|
2856
|
690 symbol_record *sr = global_sym_tab->lookup (name); |
|
1093
|
691 |
|
1271
|
692 // It is a prorgramming error to look for builtins that aren't. |
|
1093
|
693 |
|
|
694 assert (sr); |
|
|
695 |
|
2975
|
696 return sr->def (); |
|
1093
|
697 } |
|
|
698 |
|
593
|
699 // Global stuff and links to builtin variables and functions. |
|
|
700 |
|
581
|
701 // Make the definition of the symbol record sr be the same as the |
|
|
702 // definition of the global variable of the same name, creating it if |
|
1418
|
703 // it doesn't already exist. |
|
581
|
704 |
|
195
|
705 void |
|
|
706 link_to_global_variable (symbol_record *sr) |
|
|
707 { |
|
2975
|
708 if (! sr->is_linked_to_global ()) |
|
195
|
709 { |
|
2975
|
710 sr->mark_as_linked_to_global (); |
|
195
|
711 |
|
2975
|
712 if (! error_state) |
|
|
713 { |
|
3523
|
714 std::string nm = sr->name (); |
|
2846
|
715 |
|
2975
|
716 symbol_record *gsr = global_sym_tab->lookup (nm, true); |
|
|
717 |
|
|
718 // There must be a better way to do this. XXX FIXME XXX |
|
195
|
719 |
|
2975
|
720 if (sr->is_variable ()) |
|
|
721 gsr->define (sr->def ()); |
|
1271
|
722 |
|
2975
|
723 // Make sure this symbol is a variable. |
|
2900
|
724 |
|
2975
|
725 if (! gsr->is_variable ()) |
|
|
726 gsr->define (octave_value ()); |
|
2900
|
727 |
|
2975
|
728 sr->alias (gsr, 1); |
|
|
729 } |
|
195
|
730 } |
|
|
731 } |
|
|
732 |
|
581
|
733 // Make the definition of the symbol record sr be the same as the |
|
|
734 // definition of the builtin variable of the same name. |
|
|
735 |
|
|
736 // Make the definition of the symbol record sr be the same as the |
|
3258
|
737 // definition of the builtin variable, constant, or function, or user |
|
|
738 // function of the same name, provided that the name has not been used |
|
|
739 // as a formal parameter. |
|
581
|
740 |
|
195
|
741 void |
|
|
742 link_to_builtin_or_function (symbol_record *sr) |
|
|
743 { |
|
2856
|
744 symbol_record *tmp_sym = global_sym_tab->lookup (sr->name ()); |
|
195
|
745 |
|
529
|
746 if (tmp_sym |
|
3258
|
747 && (tmp_sym->is_builtin_variable () |
|
|
748 || tmp_sym->is_builtin_constant () |
|
|
749 || tmp_sym->is_function ()) |
|
529
|
750 && ! tmp_sym->is_formal_parameter ()) |
|
|
751 sr->alias (tmp_sym); |
|
195
|
752 } |
|
|
753 |
|
581
|
754 // Force a link to a function in the current symbol table. This is |
|
|
755 // used just after defining a function to avoid different behavior |
|
|
756 // depending on whether or not the function has been evaluated after |
|
|
757 // being defined. |
|
|
758 // |
|
|
759 // Return without doing anything if there isn't a function with the |
|
|
760 // given name defined in the global symbol table. |
|
|
761 |
|
195
|
762 void |
|
3523
|
763 force_link_to_function (const std::string& id_name) |
|
195
|
764 { |
|
2856
|
765 symbol_record *gsr = global_sym_tab->lookup (id_name, true); |
|
195
|
766 if (gsr->is_function ()) |
|
|
767 { |
|
|
768 curr_sym_tab->clear (id_name); |
|
2856
|
769 symbol_record *csr = curr_sym_tab->lookup (id_name, true); |
|
195
|
770 csr->alias (gsr); |
|
|
771 } |
|
|
772 } |
|
|
773 |
|
2294
|
774 DEFUN (document, args, , |
|
3361
|
775 "-*- texinfo -*-\n\ |
|
|
776 @deftypefn {Built-in Function} {} document (@var{symbol}, @var{text})\n\ |
|
|
777 Set the documentation string for @var{symbol} to @var{text}.\n\ |
|
|
778 @end deftypefn") |
|
593
|
779 { |
|
2294
|
780 octave_value retval; |
|
1755
|
781 |
|
2294
|
782 int nargin = args.length (); |
|
1755
|
783 |
|
2294
|
784 if (nargin == 2) |
|
593
|
785 { |
|
3523
|
786 std::string name = args(0).string_value (); |
|
593
|
787 |
|
2294
|
788 if (! error_state) |
|
593
|
789 { |
|
3523
|
790 std::string help = args(1).string_value (); |
|
593
|
791 |
|
2294
|
792 if (! error_state) |
|
|
793 { |
|
|
794 if (is_builtin_variable (name) |
|
|
795 || is_text_function_name (name) |
|
|
796 || is_mapper_function_name (name) |
|
|
797 || is_builtin_function_name (name)) |
|
|
798 error ("document: can't redefine help for built-in variables and functions"); |
|
|
799 else |
|
|
800 { |
|
2856
|
801 symbol_record *sym_rec = curr_sym_tab->lookup (name); |
|
2294
|
802 |
|
|
803 if (sym_rec) |
|
|
804 sym_rec->document (help); |
|
|
805 else |
|
|
806 error ("document: no such symbol `%s'", name.c_str ()); |
|
|
807 } |
|
|
808 } |
|
593
|
809 } |
|
|
810 } |
|
|
811 else |
|
|
812 print_usage ("document"); |
|
|
813 |
|
|
814 return retval; |
|
|
815 } |
|
|
816 |
|
2086
|
817 static octave_value_list |
|
1755
|
818 do_who (int argc, const string_vector& argv) |
|
529
|
819 { |
|
2086
|
820 octave_value_list retval; |
|
529
|
821 |
|
2856
|
822 bool show_builtins = false; |
|
3248
|
823 bool show_functions = false; |
|
|
824 bool show_variables = false; |
|
2856
|
825 bool show_verbose = false; |
|
529
|
826 |
|
3523
|
827 std::string my_name = argv[0]; |
|
584
|
828 |
|
1857
|
829 int i; |
|
|
830 for (i = 1; i < argc; i++) |
|
529
|
831 { |
|
1755
|
832 if (argv[i] == "-all" || argv[i] == "-a") |
|
529
|
833 { |
|
2856
|
834 show_builtins = true; |
|
|
835 show_functions = true; |
|
|
836 show_variables = true; |
|
529
|
837 } |
|
1755
|
838 else if (argv[i] == "-builtins" || argv[i] == "-b") |
|
2856
|
839 show_builtins = true; |
|
1755
|
840 else if (argv[i] == "-functions" || argv[i] == "-f") |
|
2856
|
841 show_functions = true; |
|
1755
|
842 else if (argv[i] == "-long" || argv[i] == "-l") |
|
2856
|
843 show_verbose = true; |
|
1755
|
844 else if (argv[i] == "-variables" || argv[i] == "-v") |
|
2856
|
845 show_variables = true; |
|
1755
|
846 else if (argv[i][0] == '-') |
|
|
847 warning ("%s: unrecognized option `%s'", my_name.c_str (), |
|
|
848 argv[i].c_str ()); |
|
529
|
849 else |
|
867
|
850 break; |
|
529
|
851 } |
|
|
852 |
|
3248
|
853 // If no options were specified to select the type of symbol to |
|
|
854 // display, then set defaults. |
|
|
855 |
|
|
856 if (! (show_builtins || show_functions || show_variables)) |
|
|
857 { |
|
|
858 show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
859 show_variables = true; |
|
|
860 } |
|
|
861 |
|
1857
|
862 int npats = argc - i; |
|
|
863 string_vector pats (npats); |
|
|
864 for (int j = 0; j < npats; j++) |
|
|
865 pats[j] = argv[i+j]; |
|
|
866 |
|
1271
|
867 // If the user specified -l and nothing else, show variables. If |
|
|
868 // evaluating this at the top level, also show functions. |
|
529
|
869 |
|
|
870 if (show_verbose && ! (show_builtins || show_functions || show_variables)) |
|
|
871 { |
|
|
872 show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
873 show_variables = 1; |
|
|
874 } |
|
|
875 |
|
|
876 int pad_after = 0; |
|
|
877 |
|
|
878 if (show_builtins) |
|
|
879 { |
|
3011
|
880 pad_after += global_sym_tab->maybe_list |
|
3259
|
881 ("*** built-in constants:", pats, octave_stdout, |
|
|
882 show_verbose, symbol_record::BUILTIN_CONSTANT, SYMTAB_ALL_SCOPES); |
|
|
883 |
|
|
884 pad_after += global_sym_tab->maybe_list |
|
3013
|
885 ("*** built-in variables:", pats, octave_stdout, |
|
3011
|
886 show_verbose, symbol_record::BUILTIN_VARIABLE, SYMTAB_ALL_SCOPES); |
|
529
|
887 |
|
3011
|
888 pad_after += global_sym_tab->maybe_list |
|
3013
|
889 ("*** built-in functions:", pats, octave_stdout, |
|
3011
|
890 show_verbose, symbol_record::BUILTIN_FUNCTION, SYMTAB_ALL_SCOPES); |
|
529
|
891 } |
|
|
892 |
|
|
893 if (show_functions) |
|
|
894 { |
|
3011
|
895 pad_after += global_sym_tab->maybe_list |
|
3013
|
896 ("*** currently compiled functions:", pats, |
|
3011
|
897 octave_stdout, show_verbose, symbol_record::USER_FUNCTION, |
|
|
898 SYMTAB_ALL_SCOPES); |
|
529
|
899 } |
|
|
900 |
|
|
901 if (show_variables) |
|
|
902 { |
|
3011
|
903 pad_after += curr_sym_tab->maybe_list |
|
3013
|
904 ("*** local user variables:", pats, octave_stdout, |
|
3011
|
905 show_verbose, symbol_record::USER_VARIABLE, SYMTAB_LOCAL_SCOPE); |
|
529
|
906 |
|
3011
|
907 pad_after += curr_sym_tab->maybe_list |
|
3013
|
908 ("*** globally visible user variables:", pats, |
|
3011
|
909 octave_stdout, show_verbose, symbol_record::USER_VARIABLE, |
|
|
910 SYMTAB_GLOBAL_SCOPE); |
|
529
|
911 } |
|
|
912 |
|
|
913 if (pad_after) |
|
2095
|
914 octave_stdout << "\n"; |
|
529
|
915 |
|
581
|
916 return retval; |
|
|
917 } |
|
|
918 |
|
1957
|
919 DEFUN_TEXT (who, args, , |
|
3361
|
920 "-*- texinfo -*-\n\ |
|
|
921 @deffn {Command} who options pattern @dots{}\n\ |
|
|
922 @deffnx {Command} whos options pattern @dots{}\n\ |
|
|
923 List currently defined symbols matching the given patterns. The\n\ |
|
|
924 following are valid options. They may be shortened to one character but\n\ |
|
|
925 may not be combined.\n\ |
|
|
926 \n\ |
|
|
927 @table @code\n\ |
|
|
928 @item -all\n\ |
|
|
929 List all currently defined symbols.\n\ |
|
|
930 \n\ |
|
|
931 @item -builtins\n\ |
|
|
932 List built-in variables and functions. This includes all currently\n\ |
|
|
933 compiled function files, but does not include all function files that\n\ |
|
|
934 are in the @code{LOADPATH}.\n\ |
|
581
|
935 \n\ |
|
3361
|
936 @item -functions\n\ |
|
|
937 List user-defined functions.\n\ |
|
|
938 \n\ |
|
|
939 @item -long\n\ |
|
|
940 Print a long listing including the type and dimensions of any symbols.\n\ |
|
|
941 The symbols in the first column of output indicate whether it is\n\ |
|
|
942 possible to redefine the symbol, and whether it is possible for it to be\n\ |
|
|
943 cleared.\n\ |
|
|
944 \n\ |
|
|
945 @item -variables\n\ |
|
|
946 List user-defined variables.\n\ |
|
|
947 @end table\n\ |
|
|
948 \n\ |
|
|
949 Valid patterns are the same as described for the @code{clear} command\n\ |
|
|
950 above. If no patterns are supplied, all symbols from the given category\n\ |
|
|
951 are listed. By default, only user defined functions and variables\n\ |
|
|
952 visible in the local scope are displayed.\n\ |
|
|
953 \n\ |
|
|
954 The command @kbd{whos} is equivalent to @kbd{who -long}.\n\ |
|
|
955 @end deffn") |
|
581
|
956 { |
|
2086
|
957 octave_value_list retval; |
|
581
|
958 |
|
1755
|
959 int argc = args.length () + 1; |
|
|
960 |
|
1968
|
961 string_vector argv = args.make_argv ("who"); |
|
1755
|
962 |
|
|
963 if (error_state) |
|
|
964 return retval; |
|
581
|
965 |
|
1488
|
966 retval = do_who (argc, argv); |
|
581
|
967 |
|
529
|
968 return retval; |
|
|
969 } |
|
|
970 |
|
1957
|
971 DEFUN_TEXT (whos, args, , |
|
3458
|
972 "-*- texinfo -*-\n\ |
|
|
973 @deffn {Command} whos options pattern @dots{}\n\ |
|
|
974 See who.\n\ |
|
|
975 @end deffn") |
|
581
|
976 { |
|
2086
|
977 octave_value_list retval; |
|
581
|
978 |
|
712
|
979 int nargin = args.length (); |
|
|
980 |
|
2086
|
981 octave_value_list tmp_args; |
|
742
|
982 for (int i = nargin; i > 0; i--) |
|
|
983 tmp_args(i) = args(i-1); |
|
|
984 tmp_args(0) = "-long"; |
|
581
|
985 |
|
742
|
986 int argc = tmp_args.length () + 1; |
|
1755
|
987 |
|
1980
|
988 string_vector argv = tmp_args.make_argv ("whos"); |
|
581
|
989 |
|
|
990 if (error_state) |
|
|
991 return retval; |
|
|
992 |
|
1488
|
993 retval = do_who (argc, argv); |
|
581
|
994 |
|
|
995 return retval; |
|
|
996 } |
|
|
997 |
|
593
|
998 // Defining variables. |
|
|
999 |
|
1162
|
1000 void |
|
2856
|
1001 bind_ans (const octave_value& val, bool print) |
|
1162
|
1002 { |
|
2856
|
1003 static symbol_record *sr = global_sym_tab->lookup ("ans", true); |
|
1162
|
1004 |
|
2978
|
1005 if (val.is_defined ()) |
|
|
1006 { |
|
|
1007 sr->define (val); |
|
1162
|
1008 |
|
2978
|
1009 if (print) |
|
|
1010 val.print_with_name (octave_stdout, "ans"); |
|
|
1011 } |
|
1162
|
1012 } |
|
|
1013 |
|
3259
|
1014 // Give a global constant a definition. This will insert the symbol |
|
|
1015 // in the global table if necessary. |
|
|
1016 |
|
|
1017 // How is this different than install_builtin_constant? Are both |
|
|
1018 // functions needed? |
|
|
1019 |
|
|
1020 void |
|
3523
|
1021 bind_builtin_constant (const std::string& name, const octave_value& val, |
|
|
1022 bool protect, bool eternal, const std::string& help) |
|
3259
|
1023 { |
|
|
1024 symbol_record *sym_rec = global_sym_tab->lookup (name, true); |
|
|
1025 sym_rec->unprotect (); |
|
|
1026 |
|
3523
|
1027 std::string tmp_help = help.empty () ? sym_rec->help () : help; |
|
3259
|
1028 |
|
|
1029 sym_rec->define_builtin_const (val); |
|
|
1030 |
|
|
1031 sym_rec->document (tmp_help); |
|
|
1032 |
|
|
1033 if (protect) |
|
|
1034 sym_rec->protect (); |
|
|
1035 |
|
|
1036 if (eternal) |
|
|
1037 sym_rec->make_eternal (); |
|
|
1038 } |
|
|
1039 |
|
593
|
1040 // Give a global variable a definition. This will insert the symbol |
|
|
1041 // in the global table if necessary. |
|
|
1042 |
|
|
1043 // How is this different than install_builtin_variable? Are both |
|
|
1044 // functions needed? |
|
|
1045 |
|
|
1046 void |
|
3523
|
1047 bind_builtin_variable (const std::string& varname, const octave_value& val, |
|
2953
|
1048 bool protect, bool eternal, |
|
3005
|
1049 symbol_record::change_function chg_fcn, |
|
3523
|
1050 const std::string& help) |
|
593
|
1051 { |
|
2856
|
1052 symbol_record *sr = global_sym_tab->lookup (varname, true); |
|
593
|
1053 |
|
1271
|
1054 // It is a programming error for a builtin symbol to be missing. |
|
|
1055 // Besides, we just inserted it, so it must be there. |
|
593
|
1056 |
|
|
1057 assert (sr); |
|
|
1058 |
|
|
1059 sr->unprotect (); |
|
|
1060 |
|
1271
|
1061 // Must do this before define, since define will call the special |
|
|
1062 // variable function only if it knows about it, and it needs to, so |
|
|
1063 // that user prefs can be properly initialized. |
|
593
|
1064 |
|
3005
|
1065 if (chg_fcn) |
|
|
1066 sr->set_change_function (chg_fcn); |
|
593
|
1067 |
|
|
1068 sr->define_builtin_var (val); |
|
|
1069 |
|
|
1070 if (protect) |
|
|
1071 sr->protect (); |
|
|
1072 |
|
|
1073 if (eternal) |
|
|
1074 sr->make_eternal (); |
|
|
1075 |
|
1755
|
1076 sr->document (help); |
|
529
|
1077 } |
|
|
1078 |
|
593
|
1079 // Deleting names from the symbol tables. |
|
|
1080 |
|
3681
|
1081 static inline bool |
|
|
1082 var_matches_any_pattern (const std::string& nm, |
|
|
1083 const string_vector& argv, int argc, int idx) |
|
|
1084 { |
|
|
1085 bool retval = false; |
|
|
1086 |
|
|
1087 for (int k = idx; k < argc; k++) |
|
|
1088 { |
|
|
1089 std::string patstr = argv[k]; |
|
|
1090 |
|
|
1091 if (! patstr.empty ()) |
|
|
1092 { |
|
|
1093 glob_match pattern (patstr); |
|
|
1094 |
|
|
1095 if (pattern.match (nm)) |
|
|
1096 { |
|
|
1097 retval = true; |
|
|
1098 break; |
|
|
1099 } |
|
|
1100 } |
|
|
1101 } |
|
|
1102 |
|
|
1103 return retval; |
|
|
1104 } |
|
|
1105 |
|
1957
|
1106 DEFUN_TEXT (clear, args, , |
|
3361
|
1107 "-*- texinfo -*-\n\ |
|
|
1108 @deffn {Command} clear [-x] pattern @dots{}\n\ |
|
|
1109 Delete the names matching the given patterns from the symbol table. The\n\ |
|
|
1110 pattern may contain the following special characters:\n\ |
|
|
1111 @table @code\n\ |
|
|
1112 @item ?\n\ |
|
|
1113 Match any single character.\n\ |
|
668
|
1114 \n\ |
|
3361
|
1115 @item *\n\ |
|
|
1116 Match zero or more characters.\n\ |
|
|
1117 \n\ |
|
|
1118 @item [ @var{list} ]\n\ |
|
|
1119 Match the list of characters specified by @var{list}. If the first\n\ |
|
|
1120 character is @code{!} or @code{^}, match all characters except those\n\ |
|
|
1121 specified by @var{list}. For example, the pattern @samp{[a-zA-Z]} will\n\ |
|
|
1122 match all lower and upper case alphabetic characters.\n\ |
|
|
1123 @end table\n\ |
|
|
1124 \n\ |
|
|
1125 For example, the command\n\ |
|
593
|
1126 \n\ |
|
3361
|
1127 @example\n\ |
|
|
1128 clear foo b*r\n\ |
|
|
1129 @end example\n\ |
|
|
1130 \n\ |
|
|
1131 @noindent\n\ |
|
|
1132 clears the name @code{foo} and all names that begin with the letter\n\ |
|
|
1133 @code{b} and end with the letter @code{r}.\n\ |
|
668
|
1134 \n\ |
|
3361
|
1135 If @code{clear} is called without any arguments, all user-defined\n\ |
|
|
1136 variables (local and global) are cleared from the symbol table. If\n\ |
|
|
1137 @code{clear} is called with at least one argument, only the visible\n\ |
|
|
1138 names matching the arguments are cleared. For example, suppose you have\n\ |
|
|
1139 defined a function @code{foo}, and then hidden it by performing the\n\ |
|
|
1140 assignment @code{foo = 2}. Executing the command @kbd{clear foo} once\n\ |
|
|
1141 will clear the variable definition and restore the definition of\n\ |
|
|
1142 @code{foo} as a function. Executing @kbd{clear foo} a second time will\n\ |
|
|
1143 clear the function definition.\n\ |
|
|
1144 \n\ |
|
|
1145 With -x, clear the variables that don't match the patterns.\n\ |
|
|
1146 \n\ |
|
|
1147 This command may not be used within a function body.\n\ |
|
|
1148 @end deffn") |
|
529
|
1149 { |
|
2086
|
1150 octave_value_list retval; |
|
593
|
1151 |
|
1755
|
1152 int argc = args.length () + 1; |
|
593
|
1153 |
|
1968
|
1154 string_vector argv = args.make_argv ("clear"); |
|
1755
|
1155 |
|
|
1156 if (error_state) |
|
|
1157 return retval; |
|
668
|
1158 |
|
1271
|
1159 // Always clear the local table, but don't clear currently compiled |
|
|
1160 // functions unless we are at the top level. (Allowing that to |
|
|
1161 // happen inside functions would result in pretty odd behavior...) |
|
593
|
1162 |
|
2856
|
1163 bool clear_user_functions = (curr_sym_tab == top_level_sym_tab); |
|
593
|
1164 |
|
1755
|
1165 if (argc == 1) |
|
593
|
1166 { |
|
|
1167 curr_sym_tab->clear (); |
|
|
1168 global_sym_tab->clear (clear_user_functions); |
|
|
1169 } |
|
529
|
1170 else |
|
|
1171 { |
|
668
|
1172 int exclusive = 0; |
|
|
1173 |
|
1755
|
1174 int idx = 1; |
|
|
1175 |
|
|
1176 if (argc > 1) |
|
668
|
1177 { |
|
1755
|
1178 if (argv[idx] == "-x") |
|
3125
|
1179 { |
|
|
1180 idx++; |
|
|
1181 exclusive = 1; |
|
|
1182 } |
|
668
|
1183 } |
|
|
1184 |
|
1755
|
1185 string_vector lvars; |
|
|
1186 string_vector gvars; |
|
|
1187 string_vector fcns; |
|
668
|
1188 |
|
|
1189 if (argc > 0) |
|
593
|
1190 { |
|
3013
|
1191 string_vector tmp; |
|
|
1192 |
|
3325
|
1193 lvars = curr_sym_tab->name_list |
|
3355
|
1194 (tmp, false, SYMTAB_VARIABLES, SYMTAB_LOCAL_SCOPE); |
|
668
|
1195 |
|
3325
|
1196 gvars = curr_sym_tab->name_list |
|
3355
|
1197 (tmp, false, SYMTAB_VARIABLES, SYMTAB_GLOBAL_SCOPE); |
|
668
|
1198 |
|
3325
|
1199 fcns = global_sym_tab->name_list |
|
3355
|
1200 (tmp, false, |
|
3325
|
1201 symbol_record::USER_FUNCTION|symbol_record::DLD_FUNCTION, |
|
|
1202 SYMTAB_ALL_SCOPES); |
|
668
|
1203 } |
|
|
1204 |
|
2438
|
1205 // XXX FIXME XXX -- this needs to be optimized to avoid the |
|
|
1206 // pattern matching code if the string doesn't contain any |
|
|
1207 // globbing patterns. |
|
|
1208 |
|
3681
|
1209 if (exclusive) |
|
668
|
1210 { |
|
3681
|
1211 int lcount = lvars.length (); |
|
|
1212 |
|
|
1213 for (int i = 0; i < lcount; i++) |
|
|
1214 { |
|
|
1215 std::string nm = lvars[i]; |
|
668
|
1216 |
|
3681
|
1217 if (! var_matches_any_pattern (nm, argv, argc, idx)) |
|
|
1218 curr_sym_tab->clear (nm); |
|
|
1219 } |
|
|
1220 |
|
|
1221 int gcount = gvars.length (); |
|
|
1222 |
|
|
1223 for (int i = 0; i < gcount; i++) |
|
593
|
1224 { |
|
3681
|
1225 std::string nm = gvars[i]; |
|
1755
|
1226 |
|
3681
|
1227 if (! var_matches_any_pattern (nm, argv, argc, idx)) |
|
593
|
1228 { |
|
3681
|
1229 int count = curr_sym_tab->clear (nm); |
|
|
1230 |
|
|
1231 if (count > 0) |
|
|
1232 global_sym_tab->clear (nm, clear_user_functions); |
|
593
|
1233 } |
|
3681
|
1234 } |
|
|
1235 |
|
|
1236 int fcount = fcns.length (); |
|
|
1237 |
|
|
1238 for (int i = 0; i < fcount; i++) |
|
|
1239 { |
|
|
1240 std::string nm = fcns[i]; |
|
|
1241 |
|
|
1242 if (! var_matches_any_pattern (nm, argv, argc, idx)) |
|
|
1243 { |
|
|
1244 curr_sym_tab->clear (nm); |
|
529
|
1245 |
|
3681
|
1246 global_sym_tab->clear (nm, clear_user_functions); |
|
|
1247 } |
|
|
1248 } |
|
|
1249 } |
|
|
1250 else |
|
|
1251 { |
|
|
1252 for (int k = idx; k < argc; k++) |
|
|
1253 { |
|
|
1254 std::string patstr = argv[k]; |
|
|
1255 |
|
|
1256 if (! patstr.empty ()) |
|
593
|
1257 { |
|
3681
|
1258 glob_match pattern (patstr); |
|
|
1259 |
|
|
1260 int lcount = lvars.length (); |
|
|
1261 |
|
|
1262 for (int i = 0; i < lcount; i++) |
|
593
|
1263 { |
|
3681
|
1264 std::string nm = lvars[i]; |
|
|
1265 |
|
|
1266 if (pattern.match (nm)) |
|
|
1267 curr_sym_tab->clear (nm); |
|
593
|
1268 } |
|
3681
|
1269 |
|
|
1270 int gcount = gvars.length (); |
|
|
1271 |
|
|
1272 for (int i = 0; i < gcount; i++) |
|
|
1273 { |
|
|
1274 std::string nm = gvars[i]; |
|
|
1275 |
|
|
1276 if (pattern.match (nm)) |
|
|
1277 { |
|
|
1278 int count = curr_sym_tab->clear (nm); |
|
529
|
1279 |
|
3681
|
1280 if (count > 0) |
|
|
1281 global_sym_tab->clear (nm, clear_user_functions); |
|
|
1282 } |
|
|
1283 } |
|
|
1284 |
|
|
1285 int fcount = fcns.length (); |
|
|
1286 |
|
|
1287 for (int i = 0; i < fcount; i++) |
|
593
|
1288 { |
|
3681
|
1289 std::string nm = fcns[i]; |
|
|
1290 |
|
|
1291 if (pattern.match (nm)) |
|
|
1292 { |
|
|
1293 curr_sym_tab->clear (nm); |
|
|
1294 |
|
|
1295 global_sym_tab->clear (nm, clear_user_functions); |
|
|
1296 } |
|
593
|
1297 } |
|
|
1298 } |
|
|
1299 } |
|
|
1300 } |
|
|
1301 } |
|
|
1302 |
|
|
1303 return retval; |
|
529
|
1304 } |
|
|
1305 |
|
3005
|
1306 DEFUN (__dump_symtab_info__, args, , |
|
3446
|
1307 "-*- texinfo -*-\n\ |
|
|
1308 @deftypefn {Built-in Function} {} __dump_symtab_info__ ()\n\ |
|
|
1309 Print raw symbol table statistices.\n\ |
|
|
1310 @end deftypefn") |
|
3005
|
1311 { |
|
|
1312 octave_value_list retval; |
|
|
1313 |
|
|
1314 int nargin = args.length (); |
|
|
1315 |
|
|
1316 if (nargin == 1) |
|
|
1317 { |
|
3523
|
1318 std::string arg = args(0).string_value (); |
|
3005
|
1319 |
|
|
1320 if (arg == "global") |
|
|
1321 global_sym_tab->print_stats (); |
|
|
1322 else |
|
|
1323 print_usage ("__dump_symtab_info__"); |
|
|
1324 } |
|
|
1325 else if (nargin == 0) |
|
|
1326 curr_sym_tab->print_stats (); |
|
|
1327 else |
|
|
1328 print_usage ("__dump_symtab_info__"); |
|
|
1329 |
|
|
1330 return retval; |
|
|
1331 } |
|
|
1332 |
|
3239
|
1333 DEFUN (__dump_symbol_info__, args, , |
|
3446
|
1334 "-*- texinfo -*-\n\ |
|
|
1335 @deftypefn {Built-in Function} {} __dump_symbol_info__ (@var{name})\n\ |
|
3548
|
1336 Print symbol table information for the symbol @var{name}.\n\ |
|
3446
|
1337 @end deftypefn") |
|
3239
|
1338 { |
|
|
1339 octave_value_list retval; |
|
|
1340 |
|
|
1341 int nargin = args.length (); |
|
|
1342 |
|
|
1343 if (nargin == 1) |
|
|
1344 { |
|
3523
|
1345 std::string symbol_name = args(0).string_value (); |
|
3239
|
1346 |
|
|
1347 if (! error_state) |
|
|
1348 { |
|
|
1349 symbol_record *sr = curr_sym_tab->lookup (symbol_name); |
|
|
1350 |
|
|
1351 if (sr) |
|
|
1352 sr->dump_symbol_info (); |
|
|
1353 else |
|
|
1354 error ("__dymp_symbol_info__: symbol %s not found", |
|
|
1355 symbol_name.c_str ()); |
|
|
1356 } |
|
|
1357 else |
|
|
1358 print_usage ("__dump_symbol_info__"); |
|
|
1359 } |
|
|
1360 else |
|
|
1361 print_usage ("__dump_symbol_info__"); |
|
|
1362 |
|
|
1363 return retval; |
|
|
1364 } |
|
|
1365 |
|
3016
|
1366 // XXX FIXME XXX -- some of these should do their own checking to be |
|
|
1367 // able to provide more meaningful warning or error messages. |
|
|
1368 |
|
|
1369 static int |
|
|
1370 ignore_function_time_stamp (void) |
|
|
1371 { |
|
|
1372 int pref = 0; |
|
|
1373 |
|
3523
|
1374 std::string val = builtin_string_variable ("ignore_function_time_stamp"); |
|
3016
|
1375 |
|
|
1376 if (! val.empty ()) |
|
|
1377 { |
|
3565
|
1378 if (val == "all") |
|
3016
|
1379 pref = 2; |
|
3565
|
1380 else if (val == "system") |
|
3016
|
1381 pref = 1; |
|
|
1382 } |
|
|
1383 |
|
|
1384 Vignore_function_time_stamp = pref; |
|
|
1385 |
|
|
1386 return 0; |
|
|
1387 } |
|
|
1388 |
|
|
1389 // XXX FIXME XXX -- there still may be better places for some of these |
|
|
1390 // to be defined. |
|
|
1391 |
|
|
1392 void |
|
|
1393 symbols_of_variables (void) |
|
|
1394 { |
|
3258
|
1395 DEFVAR (ans, , 0, |
|
3372
|
1396 "-*- texinfo -*-\n\ |
|
|
1397 @defvr {Built-in Variable} ans\n\ |
|
|
1398 This variable holds the most recently computed result that was not\n\ |
|
|
1399 explicitly assigned to a variable. For example, after the expression\n\ |
|
|
1400 \n\ |
|
|
1401 @example\n\ |
|
|
1402 3^2 + 4^2\n\ |
|
|
1403 @end example\n\ |
|
|
1404 \n\ |
|
|
1405 @noindent\n\ |
|
|
1406 is evaluated, the value of @code{ans} is 25.\n\ |
|
|
1407 @end defvr"); |
|
3016
|
1408 |
|
3258
|
1409 DEFVAR (ignore_function_time_stamp, "system", ignore_function_time_stamp, |
|
3371
|
1410 "-*- texinfo -*-\n\ |
|
|
1411 @defvr {Built-in Variable} ignore_function_time_stamp\n\ |
|
|
1412 This variable can be used to prevent Octave from making the system call\n\ |
|
|
1413 @code{stat} each time it looks up functions defined in function files.\n\ |
|
|
1414 If @code{ignore_function_time_stamp} to @code{\"system\"}, Octave will not\n\ |
|
|
1415 automatically recompile function files in subdirectories of\n\ |
|
|
1416 @file{@var{octave-home}/lib/@var{version}} if they have changed since\n\ |
|
|
1417 they were last compiled, but will recompile other function files in the\n\ |
|
|
1418 @code{LOADPATH} if they change. If set to @code{\"all\"}, Octave will not\n\ |
|
|
1419 recompile any function files unless their definitions are removed with\n\ |
|
|
1420 @code{clear}. For any other value of @code{ignore_function_time_stamp},\n\ |
|
|
1421 Octave will always check to see if functions defined in function files\n\ |
|
|
1422 need to recompiled. The default value of @code{ignore_function_time_stamp} is\n\ |
|
|
1423 @code{\"system\"}.\n\ |
|
|
1424 @end defvr"); |
|
3016
|
1425 } |
|
|
1426 |
|
1
|
1427 /* |
|
|
1428 ;;; Local Variables: *** |
|
|
1429 ;;; mode: C++ *** |
|
|
1430 ;;; End: *** |
|
|
1431 */ |
