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1
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1 /* |
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2 |
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1884
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3 Copyright (C) 1996 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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1343
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27 #include <cfloat> |
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2144
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28 #include <cmath> |
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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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605
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31 |
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1728
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32 #include <string> |
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33 |
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2095
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34 #include <iostream.h> |
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1350
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35 #include <strstream.h> |
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36 |
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37 #ifdef HAVE_UNISTD_H |
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2442
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38 #ifdef HAVE_SYS_TYPES_H |
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1
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39 #include <sys/types.h> |
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2442
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40 #endif |
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1
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41 #include <unistd.h> |
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42 #endif |
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43 |
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2470
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44 #if defined (USE_READLINE) |
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1465
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45 #include <readline/readline.h> |
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2470
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46 #endif |
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1465
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47 |
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1792
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48 #include "file-ops.h" |
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49 #include "oct-glob.h" |
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1755
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50 #include "str-vec.h" |
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51 |
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605
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52 #include "defaults.h" |
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2205
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53 #include "data.h" |
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1352
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54 #include "defun.h" |
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55 #include "dirfns.h" |
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704
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56 #include "dynamic-ld.h" |
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1352
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57 #include "error.h" |
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2205
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58 #include "file-io.h" |
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2233
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59 #include "fn-cache.h" |
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2205
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60 #include "gripes.h" |
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1352
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61 #include "help.h" |
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62 #include "input.h" |
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63 #include "lex.h" |
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2205
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64 #include "load-save.h" |
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1742
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65 #include "mappers.h" |
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66 #include "oct-hist.h" |
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1670
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67 #include "toplev.h" |
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605
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68 #include "pager.h" |
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1352
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69 #include "parse.h" |
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70 #include "symtab.h" |
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71 #include "sysdep.h" |
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1742
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72 #include "pt-const.h" |
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73 #include "oct-obj.h" |
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74 #include "pt-exp.h" |
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2181
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75 #include "pt-fcn.h" |
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1742
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76 #include "pt-fvc.h" |
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2181
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77 #include "pt-mat.h" |
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78 #include "pt-plot.h" |
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79 #include "pr-output.h" |
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2076
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80 #include "syscalls.h" |
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2205
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81 #include "toplev.h" |
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1352
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82 #include "unwind-prot.h" |
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1
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83 #include "utils.h" |
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1352
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84 #include "variables.h" |
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85 #include "version.h" |
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529
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86 |
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2205
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87 // Echo commands as they are executed? |
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88 // |
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89 // 1 ==> echo commands read from script files |
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90 // 2 ==> echo commands from functions |
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91 // 4 ==> echo commands read from command line |
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92 // |
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93 // more than one state can be active at once. |
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94 int Vecho_executing_commands; |
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95 |
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96 // Where history is saved. |
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97 static string Vhistory_file; |
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98 |
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99 // The number of lines to keep in the history file. |
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100 static int Vhistory_size; |
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101 |
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102 // Should Octave always check to see if function files have changed |
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103 // since they were last compiled? |
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104 static bool Vignore_function_time_stamp; |
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105 |
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106 // TRUE if we are saving history. |
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107 static int Vsaving_history; |
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108 |
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1
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109 // Symbol table for symbols at the top level. |
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581
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110 symbol_table *top_level_sym_tab = 0; |
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1
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111 |
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112 // Symbol table for the current scope. |
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581
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113 symbol_table *curr_sym_tab = 0; |
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1
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114 |
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115 // Symbol table for global symbols. |
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581
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116 symbol_table *global_sym_tab = 0; |
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1
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117 |
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2390
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118 octave_variable_reference::octave_variable_reference (tree_indirect_ref *i) |
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119 : id (0), indir (i) |
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120 { |
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121 if (indir->is_identifier_only ()) |
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122 { |
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123 id = indir->ident (); |
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124 indir = 0; |
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125 } |
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126 } |
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127 |
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128 void |
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129 octave_variable_reference::assign (const octave_value& rhs) |
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130 { |
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131 if (id) |
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132 id->assign (rhs); |
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133 else if (indir) |
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134 { |
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135 octave_value& ult = indir->reference (); |
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136 ult = rhs; |
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137 } |
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138 else |
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139 panic_impossible (); |
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140 } |
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141 |
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142 void |
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143 octave_variable_reference::assign (const octave_value_list& idx, |
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144 const octave_value& rhs) |
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145 { |
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146 if (id) |
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147 id->assign (idx, rhs); |
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148 else if (indir) |
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149 { |
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150 octave_value& ult = indir->reference (); |
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151 ult.assign (idx, rhs); |
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152 } |
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153 else |
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154 panic_impossible (); |
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155 } |
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156 |
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157 octave_value |
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158 octave_variable_reference::value (void) |
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159 { |
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160 octave_value retval; |
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161 |
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162 if (id) |
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163 retval = id->value (); |
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164 else if (indir) |
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165 retval = indir->value (); |
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166 else |
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167 panic_impossible (); |
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168 |
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169 return retval; |
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170 } |
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171 |
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593
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172 // Initialization. |
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173 |
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174 // Create the initial symbol tables and set the current scope at the |
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175 // top level. |
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176 |
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195
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177 void |
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178 initialize_symbol_tables (void) |
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179 { |
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581
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180 if (! global_sym_tab) |
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181 global_sym_tab = new symbol_table (); |
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195
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182 |
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581
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183 if (! top_level_sym_tab) |
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184 top_level_sym_tab = new symbol_table (); |
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195
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185 |
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186 curr_sym_tab = top_level_sym_tab; |
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187 } |
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188 |
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593
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189 // Attributes of variables and functions. |
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190 |
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191 // Is this variable a builtin? |
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192 |
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1827
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193 bool |
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1755
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194 is_builtin_variable (const string& name) |
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593
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195 { |
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196 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
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197 return (sr && sr->is_builtin_variable ()); |
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198 } |
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199 |
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200 // Is this a text-style function? |
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201 |
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1827
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202 bool |
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1755
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203 is_text_function_name (const string& s) |
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593
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204 { |
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205 symbol_record *sr = global_sym_tab->lookup (s); |
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206 return (sr && sr->is_text_function ()); |
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207 } |
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208 |
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2294
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209 // Is this a mapper function? |
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210 |
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211 bool |
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212 is_builtin_function_name (const string& s) |
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213 { |
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214 symbol_record *sr = global_sym_tab->lookup (s); |
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215 return (sr && sr->is_builtin_function ()); |
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216 } |
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217 |
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218 // Is this a mapper function? |
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219 |
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220 bool |
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221 is_mapper_function_name (const string& s) |
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222 { |
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223 symbol_record *sr = global_sym_tab->lookup (s); |
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224 return (sr && sr->is_mapper_function ()); |
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225 } |
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226 |
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593
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227 // Is this function globally in this scope? |
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228 |
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1827
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229 bool |
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1755
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230 is_globally_visible (const string& name) |
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593
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231 { |
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232 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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233 return (sr && sr->is_linked_to_global ()); |
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234 } |
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235 |
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2086
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236 // Is this octave_value a valid function? |
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593
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237 |
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238 tree_fvc * |
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2086
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239 is_valid_function (const octave_value& arg, const string& warn_for, int warn) |
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593
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240 { |
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241 tree_fvc *ans = 0; |
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242 |
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1755
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243 string fcn_name; |
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1728
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244 |
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1517
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245 if (arg.is_string ()) |
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1755
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246 fcn_name = arg.string_value (); |
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1517
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247 |
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1755
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248 if (fcn_name.empty () || error_state) |
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593
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249 { |
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250 if (warn) |
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1755
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251 error ("%s: expecting function name as argument", |
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252 warn_for.c_str ()); |
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593
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253 return ans; |
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254 } |
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255 |
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256 symbol_record *sr = 0; |
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1755
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257 |
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258 if (! fcn_name.empty ()) |
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593
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259 sr = lookup_by_name (fcn_name); |
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260 |
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261 if (sr) |
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262 ans = sr->def (); |
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263 |
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264 if (! sr || ! ans || ! sr->is_function ()) |
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265 { |
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266 if (warn) |
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267 error ("%s: the symbol `%s' is not valid as a function", |
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1755
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268 warn_for.c_str (), fcn_name.c_str ()); |
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593
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269 ans = 0; |
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270 } |
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271 |
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272 return ans; |
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273 } |
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274 |
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1957
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275 DEFUN (is_global, args, , |
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593
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276 "is_global (X): return 1 if the string X names a global variable\n\ |
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277 otherwise, return 0.") |
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278 { |
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2086
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279 octave_value_list retval = 0.0; |
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593
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280 |
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712
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281 int nargin = args.length (); |
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282 |
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283 if (nargin != 1) |
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593
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284 { |
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285 print_usage ("is_global"); |
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286 return retval; |
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287 } |
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288 |
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1755
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289 string name = args(0).string_value (); |
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593
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290 |
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636
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291 if (error_state) |
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292 { |
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293 error ("is_global: expecting string argument"); |
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294 return retval; |
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295 } |
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296 |
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593
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297 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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298 |
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299 retval = (double) (sr && sr->is_linked_to_global ()); |
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300 |
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301 return retval; |
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302 } |
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303 |
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1957
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304 DEFUN (exist, args, , |
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593
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305 "exist (NAME): check if variable or file exists\n\ |
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306 \n\ |
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1564
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307 returns:\n\ |
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308 \n\ |
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309 0 : NAME is undefined\n\ |
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310 1 : NAME is a variable\n\ |
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311 2 : NAME is a function\n\ |
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312 3 : NAME is a .oct file in the current LOADPATH\n\ |
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313 5 : NAME is a built-in function") |
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593
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314 { |
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2086
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315 octave_value_list retval; |
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593
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316 |
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712
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317 int nargin = args.length (); |
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318 |
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319 if (nargin != 1) |
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593
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320 { |
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321 print_usage ("exist"); |
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322 return retval; |
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323 } |
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324 |
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1755
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325 string name = args(0).string_value (); |
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593
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326 |
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636
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327 if (error_state) |
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328 { |
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329 error ("exist: expecting string argument"); |
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330 return retval; |
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331 } |
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332 |
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1755
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333 string struct_elts; |
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334 |
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335 size_t pos = name.find ('.'); |
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336 |
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337 if (pos != NPOS) |
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1277
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338 { |
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1755
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339 struct_elts = name.substr (pos+1); |
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340 name = name.substr (0, pos); |
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1277
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341 } |
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342 |
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593
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343 symbol_record *sr = curr_sym_tab->lookup (name, 0, 0); |
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344 if (! sr) |
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345 sr = global_sym_tab->lookup (name, 0, 0); |
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346 |
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347 retval = 0.0; |
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348 |
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349 if (sr && sr->is_variable () && sr->is_defined ()) |
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1277
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350 { |
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2390
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351 if (struct_elts.empty () || sr->is_map_element (struct_elts)) |
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352 retval = 1.0; |
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1277
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353 } |
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1421
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354 else if (sr && sr->is_builtin_function ()) |
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355 { |
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356 retval = 5.0; |
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357 } |
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358 else if (sr && sr->is_user_function ()) |
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359 { |
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360 retval = 2.0; |
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361 } |
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593
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362 else |
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363 { |
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1755
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364 string path = fcn_file_in_path (name); |
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365 |
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366 if (path.length () > 0) |
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593
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367 { |
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368 retval = 2.0; |
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369 } |
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370 else |
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371 { |
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1421
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372 path = oct_file_in_path (name); |
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1755
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373 |
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374 if (path.length () > 0) |
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1421
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375 { |
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376 retval = 3.0; |
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377 } |
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378 else |
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379 { |
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1766
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380 file_stat fs (name); |
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381 |
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382 if (fs && fs.is_reg ()) |
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1421
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383 retval = 2.0; |
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384 } |
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593
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385 } |
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386 } |
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387 |
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388 return retval; |
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389 } |
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390 |
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581
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391 // Is there a corresponding function file that is newer than the |
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392 // symbol definition? |
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393 |
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593
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394 static int |
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1
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395 symbol_out_of_date (symbol_record *sr) |
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396 { |
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2205
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397 if (Vignore_function_time_stamp == 2) |
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195
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398 return 0; |
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399 |
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529
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400 if (sr) |
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1
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401 { |
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490
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402 tree_fvc *ans = sr->def (); |
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529
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403 if (ans) |
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1
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404 { |
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1755
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405 string ff = ans->fcn_file_name (); |
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2205
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406 if (! ff.empty () |
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407 && ! (Vignore_function_time_stamp |
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408 && ans->is_system_fcn_file ())) |
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1
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409 { |
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410 time_t tp = ans->time_parsed (); |
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1755
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411 |
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412 string fname = fcn_file_in_path (ff); |
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413 |
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195
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414 int status = is_newer (fname, tp); |
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1755
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415 |
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195
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416 if (status > 0) |
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417 return 1; |
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1
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418 } |
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419 } |
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420 } |
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195
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421 return 0; |
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1
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422 } |
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423 |
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991
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424 static int |
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1755
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425 looks_like_octave_copyright (const string& s) |
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991
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426 { |
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1755
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427 string t = s.substr (0, 15); |
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428 |
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429 if (t == " Copyright (C) ") |
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991
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430 { |
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1755
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431 size_t pos = s.find ('\n'); |
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432 |
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433 if (pos != NPOS) |
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991
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434 { |
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1755
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435 pos = s.find ('\n', pos + 1); |
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436 |
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437 if (pos != NPOS) |
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991
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438 { |
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1755
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439 pos++; |
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440 |
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441 t = s.substr (pos, 29); |
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442 |
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443 if (t == " This file is part of Octave." |
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1983
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444 || t == " This program is free softwar") |
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991
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445 return 1; |
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446 } |
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447 } |
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448 } |
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449 return 0; |
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450 } |
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451 |
|
1419
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452 // Eat whitespace and comments from FFILE, returning the text of the |
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453 // comments read if it doesn't look like a copyright notice. If |
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454 // IN_PARTS, consider each block of comments separately; otherwise, |
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455 // grab them all at once. |
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1418
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456 |
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2300
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457 // XXX FIXME XXX -- grab_help_text() in lex.l duplicates some of this |
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458 // code! |
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459 |
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1755
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460 static string |
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2474
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461 gobble_leading_white_space (FILE *ffile, bool in_parts) |
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581
|
462 { |
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1755
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463 string help_txt; |
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991
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464 |
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2300
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465 bool first_comments_seen = false; |
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|
466 bool begin_comment = false; |
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|
467 bool have_help_text = false; |
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468 bool in_comment = false; |
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581
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469 int c; |
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1755
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470 |
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581
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471 while ((c = getc (ffile)) != EOF) |
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472 { |
|
984
|
473 current_input_column++; |
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1755
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474 |
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2300
|
475 if (begin_comment) |
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476 { |
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477 if (c == '%' || c == '#') |
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478 continue; |
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479 else |
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|
480 begin_comment = false; |
|
|
481 } |
|
|
482 |
|
581
|
483 if (in_comment) |
|
|
484 { |
|
991
|
485 if (! have_help_text) |
|
|
486 { |
|
2300
|
487 first_comments_seen = true; |
|
1755
|
488 help_txt += (char) c; |
|
991
|
489 } |
|
|
490 |
|
581
|
491 if (c == '\n') |
|
984
|
492 { |
|
|
493 input_line_number++; |
|
|
494 current_input_column = 0; |
|
2300
|
495 in_comment = false; |
|
1755
|
496 |
|
1419
|
497 if (in_parts) |
|
1418
|
498 { |
|
1419
|
499 if ((c = getc (ffile)) != EOF) |
|
|
500 { |
|
|
501 current_input_column--; |
|
|
502 ungetc (c, ffile); |
|
|
503 if (c == '\n') |
|
|
504 break; |
|
|
505 } |
|
|
506 else |
|
1418
|
507 break; |
|
|
508 } |
|
984
|
509 } |
|
581
|
510 } |
|
|
511 else |
|
|
512 { |
|
984
|
513 switch (c) |
|
581
|
514 { |
|
984
|
515 case ' ': |
|
|
516 case '\t': |
|
991
|
517 if (first_comments_seen) |
|
2300
|
518 have_help_text = true; |
|
984
|
519 break; |
|
|
520 |
|
|
521 case '\n': |
|
993
|
522 if (first_comments_seen) |
|
2300
|
523 have_help_text = true; |
|
984
|
524 input_line_number++; |
|
|
525 current_input_column = 0; |
|
|
526 continue; |
|
|
527 |
|
|
528 case '%': |
|
|
529 case '#': |
|
2300
|
530 begin_comment = true; |
|
|
531 in_comment = true; |
|
984
|
532 break; |
|
|
533 |
|
|
534 default: |
|
|
535 current_input_column--; |
|
581
|
536 ungetc (c, ffile); |
|
991
|
537 goto done; |
|
581
|
538 } |
|
|
539 } |
|
|
540 } |
|
991
|
541 |
|
|
542 done: |
|
|
543 |
|
1755
|
544 if (! help_txt.empty ()) |
|
991
|
545 { |
|
1419
|
546 if (looks_like_octave_copyright (help_txt)) |
|
1755
|
547 help_txt.resize (0); |
|
1419
|
548 |
|
1755
|
549 if (in_parts && help_txt.empty ()) |
|
1419
|
550 help_txt = gobble_leading_white_space (ffile, in_parts); |
|
1418
|
551 } |
|
|
552 |
|
991
|
553 return help_txt; |
|
581
|
554 } |
|
|
555 |
|
|
556 static int |
|
|
557 is_function_file (FILE *ffile) |
|
|
558 { |
|
|
559 int status = 0; |
|
|
560 |
|
|
561 long pos = ftell (ffile); |
|
|
562 |
|
2474
|
563 gobble_leading_white_space (ffile, false); |
|
|
564 |
|
581
|
565 char buf [10]; |
|
|
566 fgets (buf, 10, ffile); |
|
|
567 int len = strlen (buf); |
|
|
568 if (len > 8 && strncmp (buf, "function", 8) == 0 |
|
|
569 && ! (isalnum (buf[8]) || buf[8] == '_')) |
|
|
570 status = 1; |
|
|
571 |
|
|
572 fseek (ffile, pos, SEEK_SET); |
|
|
573 |
|
|
574 return status; |
|
|
575 } |
|
|
576 |
|
1907
|
577 static void |
|
|
578 restore_command_history (void *) |
|
|
579 { |
|
2205
|
580 octave_command_history.ignore_entries (! Vsaving_history); |
|
1907
|
581 } |
|
|
582 |
|
581
|
583 static int |
|
1755
|
584 parse_fcn_file (int exec_script, const string& ff) |
|
581
|
585 { |
|
|
586 begin_unwind_frame ("parse_fcn_file"); |
|
|
587 |
|
|
588 int script_file_executed = 0; |
|
|
589 |
|
1358
|
590 // Open function file and parse. |
|
581
|
591 |
|
|
592 int old_reading_fcn_file_state = reading_fcn_file; |
|
|
593 |
|
|
594 unwind_protect_ptr (rl_instream); |
|
|
595 unwind_protect_ptr (ff_instream); |
|
|
596 |
|
|
597 unwind_protect_int (using_readline); |
|
|
598 unwind_protect_int (input_line_number); |
|
|
599 unwind_protect_int (current_input_column); |
|
|
600 unwind_protect_int (reading_fcn_file); |
|
|
601 |
|
|
602 using_readline = 0; |
|
|
603 reading_fcn_file = 1; |
|
|
604 input_line_number = 0; |
|
|
605 current_input_column = 1; |
|
|
606 |
|
|
607 FILE *ffile = get_input_from_file (ff, 0); |
|
|
608 |
|
|
609 if (ffile) |
|
|
610 { |
|
1271
|
611 // Check to see if this file defines a function or is just a |
|
|
612 // list of commands. |
|
581
|
613 |
|
|
614 if (is_function_file (ffile)) |
|
|
615 { |
|
1907
|
616 // XXX FIXME XXX -- we shouldn't need both the |
|
|
617 // octave_command_history object and the |
|
2205
|
618 // Vsaving_history variable... |
|
1907
|
619 octave_command_history.ignore_entries (); |
|
|
620 |
|
|
621 add_unwind_protect (restore_command_history, 0); |
|
|
622 |
|
2205
|
623 unwind_protect_int (Vecho_executing_commands); |
|
|
624 unwind_protect_int (Vsaving_history); |
|
581
|
625 unwind_protect_int (reading_fcn_file); |
|
1516
|
626 unwind_protect_int (input_from_command_line_file); |
|
581
|
627 |
|
2205
|
628 Vecho_executing_commands = ECHO_OFF; |
|
|
629 Vsaving_history = 0; |
|
581
|
630 reading_fcn_file = 1; |
|
1516
|
631 input_from_command_line_file = 0; |
|
581
|
632 |
|
|
633 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
634 YY_BUFFER_STATE new_buf = create_buffer (ffile); |
|
|
635 |
|
|
636 add_unwind_protect (restore_input_buffer, (void *) old_buf); |
|
|
637 add_unwind_protect (delete_input_buffer, (void *) new_buf); |
|
|
638 |
|
|
639 switch_to_buffer (new_buf); |
|
|
640 |
|
|
641 unwind_protect_ptr (curr_sym_tab); |
|
|
642 |
|
|
643 reset_parser (); |
|
|
644 |
|
2474
|
645 help_buf = gobble_leading_white_space (ffile, true); |
|
|
646 |
|
|
647 // XXX FIXME XXX -- this should not be necessary. |
|
|
648 gobble_leading_white_space (ffile, false); |
|
991
|
649 |
|
581
|
650 int status = yyparse (); |
|
|
651 |
|
|
652 if (status != 0) |
|
|
653 { |
|
1755
|
654 error ("parse error while reading function file %s", |
|
|
655 ff.c_str ()); |
|
581
|
656 global_sym_tab->clear (curr_fcn_file_name); |
|
|
657 } |
|
|
658 } |
|
|
659 else if (exec_script) |
|
|
660 { |
|
1271
|
661 // The value of `reading_fcn_file' will be restored to the |
|
|
662 // proper value when we unwind from this frame. |
|
581
|
663 reading_fcn_file = old_reading_fcn_file_state; |
|
|
664 |
|
1952
|
665 // XXX FIXME XXX -- we shouldn't need both the |
|
|
666 // octave_command_history object and the |
|
2205
|
667 // Vsaving_history variable... |
|
1952
|
668 octave_command_history.ignore_entries (); |
|
|
669 |
|
|
670 add_unwind_protect (restore_command_history, 0); |
|
|
671 |
|
2205
|
672 unwind_protect_int (Vsaving_history); |
|
581
|
673 unwind_protect_int (reading_script_file); |
|
1952
|
674 |
|
2205
|
675 Vsaving_history = 0; |
|
581
|
676 reading_script_file = 1; |
|
|
677 |
|
|
678 parse_and_execute (ffile, 1); |
|
|
679 |
|
|
680 script_file_executed = 1; |
|
|
681 } |
|
|
682 fclose (ffile); |
|
|
683 } |
|
|
684 |
|
|
685 run_unwind_frame ("parse_fcn_file"); |
|
|
686 |
|
|
687 return script_file_executed; |
|
|
688 } |
|
|
689 |
|
1827
|
690 static bool |
|
581
|
691 load_fcn_from_file (symbol_record *sym_rec, int exec_script) |
|
|
692 { |
|
1827
|
693 bool script_file_executed = false; |
|
581
|
694 |
|
1755
|
695 string nm = sym_rec->name (); |
|
581
|
696 |
|
704
|
697 if (load_octave_oct_file (nm)) |
|
|
698 { |
|
|
699 force_link_to_function (nm); |
|
|
700 } |
|
|
701 else |
|
581
|
702 { |
|
1755
|
703 string ff = fcn_file_in_path (nm); |
|
581
|
704 |
|
1606
|
705 // These are needed by yyparse. |
|
|
706 |
|
1755
|
707 begin_unwind_frame ("load_fcn_from_file"); |
|
|
708 |
|
|
709 unwind_protect_str (curr_fcn_file_name); |
|
|
710 unwind_protect_str (curr_fcn_file_full_name); |
|
|
711 |
|
1606
|
712 curr_fcn_file_name = nm; |
|
|
713 curr_fcn_file_full_name = ff; |
|
|
714 |
|
1755
|
715 if (ff.length () > 0) |
|
|
716 script_file_executed = parse_fcn_file (exec_script, ff); |
|
581
|
717 |
|
|
718 if (! (error_state || script_file_executed)) |
|
|
719 force_link_to_function (nm); |
|
1755
|
720 |
|
|
721 run_unwind_frame ("load_fcn_from_file"); |
|
581
|
722 } |
|
|
723 |
|
|
724 return script_file_executed; |
|
|
725 } |
|
|
726 |
|
1827
|
727 bool |
|
581
|
728 lookup (symbol_record *sym_rec, int exec_script) |
|
|
729 { |
|
1827
|
730 bool script_executed = false; |
|
581
|
731 |
|
|
732 if (! sym_rec->is_linked_to_global ()) |
|
|
733 { |
|
|
734 if (sym_rec->is_defined ()) |
|
|
735 { |
|
|
736 if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
737 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
738 } |
|
|
739 else if (! sym_rec->is_formal_parameter ()) |
|
|
740 { |
|
|
741 link_to_builtin_or_function (sym_rec); |
|
1271
|
742 |
|
581
|
743 if (! sym_rec->is_defined ()) |
|
1271
|
744 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
745 else if (sym_rec->is_function () && symbol_out_of_date (sym_rec)) |
|
1271
|
746 script_executed = load_fcn_from_file (sym_rec, exec_script); |
|
581
|
747 } |
|
|
748 } |
|
|
749 |
|
1271
|
750 return script_executed; |
|
581
|
751 } |
|
|
752 |
|
|
753 // Get the symbol record for the given name that is visible in the |
|
|
754 // current scope. Reread any function definitions that appear to be |
|
|
755 // out of date. If a function is available in a file but is not |
|
|
756 // currently loaded, this will load it and insert the name in the |
|
|
757 // current symbol table. |
|
|
758 |
|
|
759 symbol_record * |
|
1755
|
760 lookup_by_name (const string& nm, int exec_script) |
|
581
|
761 { |
|
|
762 symbol_record *sym_rec = curr_sym_tab->lookup (nm, 1, 0); |
|
|
763 |
|
|
764 lookup (sym_rec, exec_script); |
|
|
765 |
|
|
766 return sym_rec; |
|
|
767 } |
|
|
768 |
|
1755
|
769 string |
|
|
770 get_help_from_file (const string& path) |
|
991
|
771 { |
|
1755
|
772 string retval; |
|
|
773 |
|
|
774 if (! path.empty ()) |
|
991
|
775 { |
|
1755
|
776 FILE *fptr = fopen (path.c_str (), "r"); |
|
|
777 |
|
991
|
778 if (fptr) |
|
|
779 { |
|
2474
|
780 retval = gobble_leading_white_space (fptr, true); |
|
991
|
781 fclose (fptr); |
|
|
782 } |
|
|
783 } |
|
1755
|
784 |
|
|
785 return retval; |
|
991
|
786 } |
|
|
787 |
|
593
|
788 // Variable values. |
|
195
|
789 |
|
581
|
790 // Look for the given name in the global symbol table. If it refers |
|
|
791 // to a string, return a new copy. If not, return 0; |
|
|
792 |
|
1755
|
793 string |
|
|
794 builtin_string_variable (const string& name) |
|
1
|
795 { |
|
195
|
796 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
797 |
|
1271
|
798 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
799 |
|
529
|
800 assert (sr); |
|
195
|
801 |
|
1755
|
802 string retval; |
|
1
|
803 |
|
490
|
804 tree_fvc *defn = sr->def (); |
|
195
|
805 |
|
529
|
806 if (defn) |
|
1
|
807 { |
|
2086
|
808 octave_value val = defn->eval (0); |
|
195
|
809 |
|
610
|
810 if (! error_state && val.is_string ()) |
|
1755
|
811 retval = val.string_value (); |
|
1
|
812 } |
|
|
813 |
|
|
814 return retval; |
|
|
815 } |
|
|
816 |
|
581
|
817 // Look for the given name in the global symbol table. If it refers |
|
1504
|
818 // to a real scalar, place the value in d and return 1. Otherwise, |
|
|
819 // return 0. |
|
581
|
820 |
|
1
|
821 int |
|
1755
|
822 builtin_real_scalar_variable (const string& name, double& d) |
|
1
|
823 { |
|
1504
|
824 int status = 0; |
|
195
|
825 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
826 |
|
1271
|
827 // It is a prorgramming error to look for builtins that aren't. |
|
195
|
828 |
|
529
|
829 assert (sr); |
|
1
|
830 |
|
490
|
831 tree_fvc *defn = sr->def (); |
|
195
|
832 |
|
529
|
833 if (defn) |
|
1
|
834 { |
|
2086
|
835 octave_value val = defn->eval (0); |
|
195
|
836 |
|
598
|
837 if (! error_state && val.is_scalar_type ()) |
|
1
|
838 { |
|
|
839 d = val.double_value (); |
|
1504
|
840 status = 1; |
|
1
|
841 } |
|
|
842 } |
|
|
843 |
|
|
844 return status; |
|
|
845 } |
|
|
846 |
|
1093
|
847 // Look for the given name in the global symbol table. |
|
|
848 |
|
2086
|
849 octave_value |
|
1755
|
850 builtin_any_variable (const string& name) |
|
1093
|
851 { |
|
2086
|
852 octave_value retval; |
|
1093
|
853 |
|
|
854 symbol_record *sr = global_sym_tab->lookup (name, 0, 0); |
|
|
855 |
|
1271
|
856 // It is a prorgramming error to look for builtins that aren't. |
|
1093
|
857 |
|
|
858 assert (sr); |
|
|
859 |
|
|
860 tree_fvc *defn = sr->def (); |
|
|
861 |
|
|
862 if (defn) |
|
|
863 retval = defn->eval (0); |
|
|
864 |
|
|
865 return retval; |
|
|
866 } |
|
|
867 |
|
593
|
868 // Global stuff and links to builtin variables and functions. |
|
|
869 |
|
581
|
870 // Make the definition of the symbol record sr be the same as the |
|
|
871 // definition of the global variable of the same name, creating it if |
|
1418
|
872 // it doesn't already exist. |
|
581
|
873 |
|
195
|
874 void |
|
|
875 link_to_global_variable (symbol_record *sr) |
|
|
876 { |
|
|
877 if (sr->is_linked_to_global ()) |
|
|
878 return; |
|
|
879 |
|
1755
|
880 string nm = sr->name (); |
|
|
881 |
|
|
882 symbol_record *gsr = global_sym_tab->lookup (nm, 1, 0); |
|
195
|
883 |
|
|
884 if (sr->is_formal_parameter ()) |
|
|
885 { |
|
1755
|
886 error ("can't make function parameter `%s' global", nm.c_str ()); |
|
195
|
887 return; |
|
|
888 } |
|
|
889 |
|
1271
|
890 // There must be a better way to do this. XXX FIXME XXX |
|
195
|
891 |
|
|
892 if (sr->is_variable ()) |
|
|
893 { |
|
1271
|
894 // Would be nice not to have this cast. XXX FIXME XXX |
|
|
895 |
|
2390
|
896 tree_constant *tmp = (tree_constant *) sr->def (); |
|
529
|
897 if (tmp) |
|
2390
|
898 tmp = new tree_constant (*tmp); |
|
529
|
899 else |
|
2390
|
900 tmp = new tree_constant (); |
|
195
|
901 gsr->define (tmp); |
|
|
902 } |
|
|
903 else |
|
529
|
904 sr->clear (); |
|
195
|
905 |
|
1271
|
906 // If the global symbol is currently defined as a function, we need |
|
|
907 // to hide it with a variable. |
|
195
|
908 |
|
|
909 if (gsr->is_function ()) |
|
2390
|
910 gsr->define ((tree_constant *) 0); |
|
195
|
911 |
|
|
912 sr->alias (gsr, 1); |
|
|
913 sr->mark_as_linked_to_global (); |
|
|
914 } |
|
|
915 |
|
581
|
916 // Make the definition of the symbol record sr be the same as the |
|
|
917 // definition of the builtin variable of the same name. |
|
|
918 |
|
195
|
919 void |
|
|
920 link_to_builtin_variable (symbol_record *sr) |
|
|
921 { |
|
|
922 symbol_record *tmp_sym = global_sym_tab->lookup (sr->name (), 0, 0); |
|
|
923 |
|
529
|
924 if (tmp_sym && tmp_sym->is_builtin_variable ()) |
|
|
925 sr->alias (tmp_sym); |
|
195
|
926 } |
|
|
927 |
|
581
|
928 // Make the definition of the symbol record sr be the same as the |
|
|
929 // definition of the builtin variable or function, or user function of |
|
|
930 // the same name, provided that the name has not been used as a formal |
|
|
931 // parameter. |
|
|
932 |
|
195
|
933 void |
|
|
934 link_to_builtin_or_function (symbol_record *sr) |
|
|
935 { |
|
|
936 symbol_record *tmp_sym = global_sym_tab->lookup (sr->name (), 0, 0); |
|
|
937 |
|
529
|
938 if (tmp_sym |
|
|
939 && (tmp_sym->is_builtin_variable () || tmp_sym->is_function ()) |
|
|
940 && ! tmp_sym->is_formal_parameter ()) |
|
|
941 sr->alias (tmp_sym); |
|
195
|
942 } |
|
|
943 |
|
581
|
944 // Force a link to a function in the current symbol table. This is |
|
|
945 // used just after defining a function to avoid different behavior |
|
|
946 // depending on whether or not the function has been evaluated after |
|
|
947 // being defined. |
|
|
948 // |
|
|
949 // Return without doing anything if there isn't a function with the |
|
|
950 // given name defined in the global symbol table. |
|
|
951 |
|
195
|
952 void |
|
1755
|
953 force_link_to_function (const string& id_name) |
|
195
|
954 { |
|
|
955 symbol_record *gsr = global_sym_tab->lookup (id_name, 1, 0); |
|
|
956 if (gsr->is_function ()) |
|
|
957 { |
|
|
958 curr_sym_tab->clear (id_name); |
|
|
959 symbol_record *csr = curr_sym_tab->lookup (id_name, 1, 0); |
|
|
960 csr->alias (gsr); |
|
|
961 } |
|
|
962 } |
|
|
963 |
|
605
|
964 // Help stuff. Shouldn't this go in help.cc? |
|
593
|
965 |
|
|
966 // It's not likely that this does the right thing now. XXX FIXME XXX |
|
|
967 |
|
1755
|
968 string_vector |
|
593
|
969 make_name_list (void) |
|
|
970 { |
|
|
971 int key_len = 0; |
|
|
972 int glb_len = 0; |
|
|
973 int top_len = 0; |
|
|
974 int lcl_len = 0; |
|
|
975 |
|
1755
|
976 string_vector key; |
|
|
977 string_vector glb; |
|
|
978 string_vector top; |
|
|
979 string_vector lcl; |
|
|
980 string_vector ffl; |
|
593
|
981 |
|
1271
|
982 // Each of these functions returns a new vector of pointers to new |
|
|
983 // strings. |
|
593
|
984 |
|
|
985 key = names (keyword_help (), key_len); |
|
1795
|
986 |
|
593
|
987 glb = global_sym_tab->list (glb_len); |
|
1795
|
988 |
|
593
|
989 top = top_level_sym_tab->list (top_len); |
|
1795
|
990 |
|
593
|
991 if (top_level_sym_tab != curr_sym_tab) |
|
|
992 lcl = curr_sym_tab->list (lcl_len); |
|
1795
|
993 |
|
2233
|
994 ffl = octave_fcn_file_name_cache::list_no_suffix (); |
|
1795
|
995 int ffl_len = ffl.length (); |
|
593
|
996 |
|
|
997 int total_len = key_len + glb_len + top_len + lcl_len + ffl_len; |
|
|
998 |
|
1755
|
999 string_vector list (total_len); |
|
1418
|
1000 |
|
1271
|
1001 // Put all the symbols in one big list. Only copy pointers, not the |
|
|
1002 // strings they point to, then only delete the original array of |
|
|
1003 // pointers, and not the strings they point to. |
|
593
|
1004 |
|
|
1005 int j = 0; |
|
|
1006 int i = 0; |
|
|
1007 for (i = 0; i < key_len; i++) |
|
|
1008 list[j++] = key[i]; |
|
|
1009 |
|
|
1010 for (i = 0; i < glb_len; i++) |
|
|
1011 list[j++] = glb[i]; |
|
|
1012 |
|
|
1013 for (i = 0; i < top_len; i++) |
|
|
1014 list[j++] = top[i]; |
|
|
1015 |
|
|
1016 for (i = 0; i < lcl_len; i++) |
|
|
1017 list[j++] = lcl[i]; |
|
|
1018 |
|
|
1019 for (i = 0; i < ffl_len; i++) |
|
|
1020 list[j++] = ffl[i]; |
|
|
1021 |
|
|
1022 return list; |
|
|
1023 } |
|
|
1024 |
|
|
1025 // List variable names. |
|
|
1026 |
|
|
1027 static void |
|
2095
|
1028 print_symbol_info_line (ostream& os, const symbol_record_info& s) |
|
593
|
1029 { |
|
2095
|
1030 os << (s.is_read_only () ? " -" : " w"); |
|
|
1031 os << (s.is_eternal () ? "- " : "d "); |
|
593
|
1032 #if 0 |
|
2095
|
1033 os << (s.hides_fcn () ? "f" : (s.hides_builtin () ? "F" : "-")); |
|
593
|
1034 #endif |
|
2390
|
1035 os.form (" %-16s", s.type_name ().c_str ()); |
|
2404
|
1036 |
|
|
1037 int nr = s.rows (); |
|
|
1038 int nc = s.columns (); |
|
|
1039 |
|
|
1040 if (nr < 0) |
|
|
1041 os << " -"; |
|
593
|
1042 else |
|
2404
|
1043 os.form ("%7d", nr); |
|
|
1044 |
|
|
1045 if (nc < 0) |
|
|
1046 os << " -"; |
|
|
1047 else |
|
|
1048 os.form ("%7d", nc); |
|
|
1049 |
|
2095
|
1050 os << " " << s.name () << "\n"; |
|
593
|
1051 } |
|
|
1052 |
|
|
1053 static void |
|
2095
|
1054 print_long_listing (ostream& os, symbol_record_info *s) |
|
593
|
1055 { |
|
|
1056 if (! s) |
|
|
1057 return; |
|
|
1058 |
|
|
1059 symbol_record_info *ptr = s; |
|
|
1060 while (ptr->is_defined ()) |
|
|
1061 { |
|
2095
|
1062 print_symbol_info_line (os, *ptr); |
|
593
|
1063 ptr++; |
|
|
1064 } |
|
|
1065 } |
|
|
1066 |
|
|
1067 static int |
|
1755
|
1068 maybe_list (const char *header, const string_vector& argv, int argc, |
|
2095
|
1069 ostream& os, int show_verbose, symbol_table |
|
867
|
1070 *sym_tab, unsigned type, unsigned scope) |
|
593
|
1071 { |
|
|
1072 int count; |
|
|
1073 int status = 0; |
|
|
1074 if (show_verbose) |
|
|
1075 { |
|
|
1076 symbol_record_info *symbols; |
|
867
|
1077 symbols = sym_tab->long_list (count, argv, argc, 1, type, scope); |
|
593
|
1078 if (symbols && count > 0) |
|
|
1079 { |
|
2095
|
1080 os << "\n" << header << "\n\n" |
|
593
|
1081 << "prot type rows cols name\n" |
|
|
1082 << "==== ==== ==== ==== ====\n"; |
|
|
1083 |
|
2095
|
1084 print_long_listing (os, symbols); |
|
593
|
1085 status = 1; |
|
|
1086 } |
|
|
1087 delete [] symbols; |
|
|
1088 } |
|
|
1089 else |
|
|
1090 { |
|
1755
|
1091 string_vector symbols = sym_tab->list (count, argv, argc, 1, |
|
|
1092 type, scope); |
|
|
1093 if (symbols.length () > 0 && count > 0) |
|
593
|
1094 { |
|
2095
|
1095 os << "\n" << header << "\n\n"; |
|
|
1096 symbols.list_in_columns (os); |
|
593
|
1097 status = 1; |
|
|
1098 } |
|
|
1099 } |
|
|
1100 return status; |
|
|
1101 } |
|
|
1102 |
|
2294
|
1103 DEFUN (document, args, , |
|
|
1104 "document (NAME, STRING)\n\ |
|
593
|
1105 \n\ |
|
|
1106 Associate a cryptic message with a variable name.") |
|
|
1107 { |
|
2294
|
1108 octave_value retval; |
|
1755
|
1109 |
|
2294
|
1110 int nargin = args.length (); |
|
1755
|
1111 |
|
2294
|
1112 if (nargin == 2) |
|
593
|
1113 { |
|
2294
|
1114 string name = args(0).string_value (); |
|
593
|
1115 |
|
2294
|
1116 if (! error_state) |
|
593
|
1117 { |
|
2294
|
1118 string help = args(1).string_value (); |
|
593
|
1119 |
|
2294
|
1120 if (! error_state) |
|
|
1121 { |
|
|
1122 if (is_builtin_variable (name) |
|
|
1123 || is_text_function_name (name) |
|
|
1124 || is_mapper_function_name (name) |
|
|
1125 || is_builtin_function_name (name)) |
|
|
1126 error ("document: can't redefine help for built-in variables and functions"); |
|
|
1127 else |
|
|
1128 { |
|
|
1129 symbol_record *sym_rec = curr_sym_tab->lookup (name, 0); |
|
|
1130 |
|
|
1131 if (sym_rec) |
|
|
1132 sym_rec->document (help); |
|
|
1133 else |
|
|
1134 error ("document: no such symbol `%s'", name.c_str ()); |
|
|
1135 } |
|
|
1136 } |
|
593
|
1137 } |
|
|
1138 } |
|
|
1139 else |
|
|
1140 print_usage ("document"); |
|
|
1141 |
|
|
1142 return retval; |
|
|
1143 } |
|
|
1144 |
|
584
|
1145 // XXX FIXME XXX -- this should take a list of regular expressions |
|
|
1146 // naming the variables to look for. |
|
|
1147 |
|
2086
|
1148 static octave_value_list |
|
1755
|
1149 do_who (int argc, const string_vector& argv) |
|
529
|
1150 { |
|
2086
|
1151 octave_value_list retval; |
|
529
|
1152 |
|
|
1153 int show_builtins = 0; |
|
|
1154 int show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1155 int show_variables = 1; |
|
|
1156 int show_verbose = 0; |
|
|
1157 |
|
1755
|
1158 string my_name = argv[0]; |
|
584
|
1159 |
|
529
|
1160 if (argc > 1) |
|
|
1161 { |
|
|
1162 show_functions = 0; |
|
|
1163 show_variables = 0; |
|
|
1164 } |
|
|
1165 |
|
1857
|
1166 int i; |
|
|
1167 for (i = 1; i < argc; i++) |
|
529
|
1168 { |
|
1755
|
1169 if (argv[i] == "-all" || argv[i] == "-a") |
|
529
|
1170 { |
|
|
1171 show_builtins++; |
|
|
1172 show_functions++; |
|
1418
|
1173 show_variables++; |
|
529
|
1174 } |
|
1755
|
1175 else if (argv[i] == "-builtins" || argv[i] == "-b") |
|
529
|
1176 show_builtins++; |
|
1755
|
1177 else if (argv[i] == "-functions" || argv[i] == "-f") |
|
529
|
1178 show_functions++; |
|
1755
|
1179 else if (argv[i] == "-long" || argv[i] == "-l") |
|
605
|
1180 show_verbose++; |
|
1755
|
1181 else if (argv[i] == "-variables" || argv[i] == "-v") |
|
529
|
1182 show_variables++; |
|
1755
|
1183 else if (argv[i][0] == '-') |
|
|
1184 warning ("%s: unrecognized option `%s'", my_name.c_str (), |
|
|
1185 argv[i].c_str ()); |
|
529
|
1186 else |
|
867
|
1187 break; |
|
529
|
1188 } |
|
|
1189 |
|
1857
|
1190 int npats = argc - i; |
|
|
1191 string_vector pats (npats); |
|
|
1192 for (int j = 0; j < npats; j++) |
|
|
1193 pats[j] = argv[i+j]; |
|
|
1194 |
|
1271
|
1195 // If the user specified -l and nothing else, show variables. If |
|
|
1196 // evaluating this at the top level, also show functions. |
|
529
|
1197 |
|
|
1198 if (show_verbose && ! (show_builtins || show_functions || show_variables)) |
|
|
1199 { |
|
|
1200 show_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1201 show_variables = 1; |
|
|
1202 } |
|
|
1203 |
|
|
1204 int pad_after = 0; |
|
|
1205 |
|
|
1206 if (show_builtins) |
|
|
1207 { |
|
1857
|
1208 pad_after += maybe_list ("*** built-in variables:", pats, npats, |
|
2095
|
1209 octave_stdout, show_verbose, global_sym_tab, |
|
529
|
1210 symbol_def::BUILTIN_VARIABLE, |
|
|
1211 SYMTAB_ALL_SCOPES); |
|
|
1212 |
|
1857
|
1213 pad_after += maybe_list ("*** built-in functions:", pats, npats, |
|
2095
|
1214 octave_stdout, show_verbose, global_sym_tab, |
|
529
|
1215 symbol_def::BUILTIN_FUNCTION, |
|
|
1216 SYMTAB_ALL_SCOPES); |
|
|
1217 } |
|
|
1218 |
|
|
1219 if (show_functions) |
|
|
1220 { |
|
|
1221 pad_after += maybe_list ("*** currently compiled functions:", |
|
2095
|
1222 pats, npats, octave_stdout, show_verbose, |
|
867
|
1223 global_sym_tab, symbol_def::USER_FUNCTION, |
|
529
|
1224 SYMTAB_ALL_SCOPES); |
|
|
1225 } |
|
|
1226 |
|
|
1227 if (show_variables) |
|
|
1228 { |
|
1857
|
1229 pad_after += maybe_list ("*** local user variables:", pats, npats, |
|
2095
|
1230 octave_stdout, show_verbose, curr_sym_tab, |
|
529
|
1231 symbol_def::USER_VARIABLE, |
|
1418
|
1232 SYMTAB_LOCAL_SCOPE); |
|
529
|
1233 |
|
|
1234 pad_after += maybe_list ("*** globally visible user variables:", |
|
2095
|
1235 pats, npats, octave_stdout, show_verbose, |
|
867
|
1236 curr_sym_tab, symbol_def::USER_VARIABLE, |
|
529
|
1237 SYMTAB_GLOBAL_SCOPE); |
|
|
1238 } |
|
|
1239 |
|
|
1240 if (pad_after) |
|
2095
|
1241 octave_stdout << "\n"; |
|
529
|
1242 |
|
581
|
1243 return retval; |
|
|
1244 } |
|
|
1245 |
|
1957
|
1246 DEFUN_TEXT (who, args, , |
|
581
|
1247 "who [-all] [-builtins] [-functions] [-long] [-variables]\n\ |
|
|
1248 \n\ |
|
|
1249 List currently defined symbol(s). Options may be shortened to one\n\ |
|
|
1250 character, but may not be combined.") |
|
|
1251 { |
|
2086
|
1252 octave_value_list retval; |
|
581
|
1253 |
|
1755
|
1254 int argc = args.length () + 1; |
|
|
1255 |
|
1968
|
1256 string_vector argv = args.make_argv ("who"); |
|
1755
|
1257 |
|
|
1258 if (error_state) |
|
|
1259 return retval; |
|
581
|
1260 |
|
1488
|
1261 retval = do_who (argc, argv); |
|
581
|
1262 |
|
529
|
1263 return retval; |
|
|
1264 } |
|
|
1265 |
|
1957
|
1266 DEFUN_TEXT (whos, args, , |
|
581
|
1267 "whos [-all] [-builtins] [-functions] [-long] [-variables]\n\ |
|
|
1268 \n\ |
|
|
1269 List currently defined symbol(s). Options may be shortened to one\n\ |
|
|
1270 character, but may not be combined.") |
|
|
1271 { |
|
2086
|
1272 octave_value_list retval; |
|
581
|
1273 |
|
712
|
1274 int nargin = args.length (); |
|
|
1275 |
|
2086
|
1276 octave_value_list tmp_args; |
|
742
|
1277 for (int i = nargin; i > 0; i--) |
|
|
1278 tmp_args(i) = args(i-1); |
|
|
1279 tmp_args(0) = "-long"; |
|
581
|
1280 |
|
742
|
1281 int argc = tmp_args.length () + 1; |
|
1755
|
1282 |
|
1980
|
1283 string_vector argv = tmp_args.make_argv ("whos"); |
|
581
|
1284 |
|
|
1285 if (error_state) |
|
|
1286 return retval; |
|
|
1287 |
|
1488
|
1288 retval = do_who (argc, argv); |
|
581
|
1289 |
|
|
1290 return retval; |
|
|
1291 } |
|
|
1292 |
|
593
|
1293 // Install variables and functions in the symbol tables. |
|
529
|
1294 |
|
593
|
1295 void |
|
1755
|
1296 install_builtin_mapper (const builtin_mapper_function& mf) |
|
529
|
1297 { |
|
1755
|
1298 symbol_record *sym_rec = global_sym_tab->lookup (mf.name, 1); |
|
593
|
1299 sym_rec->unprotect (); |
|
|
1300 |
|
2089
|
1301 tree_builtin *def = new tree_builtin (mf, mf.name); |
|
593
|
1302 |
|
|
1303 sym_rec->define (def); |
|
|
1304 |
|
1755
|
1305 sym_rec->document (mf.help_string); |
|
593
|
1306 sym_rec->make_eternal (); |
|
|
1307 sym_rec->protect (); |
|
|
1308 } |
|
|
1309 |
|
|
1310 void |
|
1755
|
1311 install_builtin_function (const builtin_function& f) |
|
593
|
1312 { |
|
1755
|
1313 symbol_record *sym_rec = global_sym_tab->lookup (f.name, 1); |
|
593
|
1314 sym_rec->unprotect (); |
|
|
1315 |
|
1755
|
1316 tree_builtin *def = new tree_builtin (f.fcn, f.name); |
|
593
|
1317 |
|
1755
|
1318 sym_rec->define (def, f.is_text_fcn); |
|
593
|
1319 |
|
1755
|
1320 sym_rec->document (f.help_string); |
|
593
|
1321 sym_rec->make_eternal (); |
|
|
1322 sym_rec->protect (); |
|
|
1323 } |
|
|
1324 |
|
|
1325 void |
|
1755
|
1326 install_builtin_variable (const builtin_variable& v) |
|
593
|
1327 { |
|
1755
|
1328 if (v.install_as_function) |
|
|
1329 install_builtin_variable_as_function (v.name, v.value, v.protect, |
|
|
1330 v.eternal, v.help_string); |
|
529
|
1331 else |
|
1755
|
1332 bind_builtin_variable (v.name, v.value, v.protect, v.eternal, |
|
|
1333 v.sv_function, v.help_string); |
|
529
|
1334 } |
|
|
1335 |
|
593
|
1336 void |
|
2390
|
1337 install_builtin_variable_as_function (const string& name, |
|
|
1338 const octave_value& val, |
|
593
|
1339 int protect, int eternal, |
|
1755
|
1340 const string& help) |
|
529
|
1341 { |
|
593
|
1342 symbol_record *sym_rec = global_sym_tab->lookup (name, 1); |
|
|
1343 sym_rec->unprotect (); |
|
|
1344 |
|
1755
|
1345 string tmp_help = help.empty () ? sym_rec->help () : help; |
|
593
|
1346 |
|
|
1347 sym_rec->define_as_fcn (val); |
|
|
1348 |
|
|
1349 sym_rec->document (tmp_help); |
|
|
1350 |
|
|
1351 if (protect) |
|
|
1352 sym_rec->protect (); |
|
|
1353 |
|
|
1354 if (eternal) |
|
|
1355 sym_rec->make_eternal (); |
|
|
1356 } |
|
|
1357 |
|
|
1358 void |
|
1755
|
1359 alias_builtin (const string& alias, const string& name) |
|
593
|
1360 { |
|
|
1361 symbol_record *sr_name = global_sym_tab->lookup (name, 0, 0); |
|
1755
|
1362 |
|
593
|
1363 if (! sr_name) |
|
|
1364 panic ("can't alias to undefined name!"); |
|
|
1365 |
|
|
1366 symbol_record *sr_alias = global_sym_tab->lookup (alias, 1, 0); |
|
|
1367 |
|
|
1368 if (sr_alias) |
|
|
1369 sr_alias->alias (sr_name); |
|
|
1370 else |
|
1755
|
1371 panic ("can't find symbol record for builtin function `%s'", |
|
|
1372 alias.c_str ()); |
|
529
|
1373 } |
|
|
1374 |
|
593
|
1375 // Defining variables. |
|
|
1376 |
|
1162
|
1377 void |
|
2086
|
1378 bind_ans (const octave_value& val, int print) |
|
1162
|
1379 { |
|
|
1380 static symbol_record *sr = global_sym_tab->lookup ("ans", 1, 0); |
|
|
1381 |
|
1281
|
1382 tree_identifier *ans_id = new tree_identifier (sr); |
|
2390
|
1383 tree_constant *tmp = new tree_constant (val); |
|
1162
|
1384 |
|
1281
|
1385 // XXX FIXME XXX -- making ans_id static, passing its address to |
|
|
1386 // tree_simple_assignment_expression along with a flag to not delete |
|
|
1387 // it seems to create a memory leak. Hmm. |
|
|
1388 |
|
1827
|
1389 tree_simple_assignment_expression tmp_ass (ans_id, tmp, false, true); |
|
1162
|
1390 |
|
|
1391 tmp_ass.eval (print); |
|
|
1392 } |
|
|
1393 |
|
1489
|
1394 void |
|
|
1395 bind_global_error_variable (void) |
|
|
1396 { |
|
|
1397 *error_message_buffer << ends; |
|
|
1398 |
|
|
1399 char *error_text = error_message_buffer->str (); |
|
|
1400 |
|
|
1401 bind_builtin_variable ("__error_text__", error_text, 1); |
|
|
1402 |
|
|
1403 delete [] error_text; |
|
|
1404 |
|
|
1405 delete error_message_buffer; |
|
|
1406 |
|
|
1407 error_message_buffer = 0; |
|
|
1408 } |
|
|
1409 |
|
|
1410 void |
|
|
1411 clear_global_error_variable (void *) |
|
|
1412 { |
|
|
1413 delete error_message_buffer; |
|
|
1414 error_message_buffer = 0; |
|
|
1415 |
|
|
1416 bind_builtin_variable ("__error_text__", "", 1); |
|
|
1417 } |
|
|
1418 |
|
593
|
1419 // Give a global variable a definition. This will insert the symbol |
|
|
1420 // in the global table if necessary. |
|
|
1421 |
|
|
1422 // How is this different than install_builtin_variable? Are both |
|
|
1423 // functions needed? |
|
|
1424 |
|
|
1425 void |
|
2390
|
1426 bind_builtin_variable (const string& varname, const octave_value& val, |
|
593
|
1427 int protect, int eternal, sv_Function sv_fcn, |
|
1755
|
1428 const string& help) |
|
593
|
1429 { |
|
|
1430 symbol_record *sr = global_sym_tab->lookup (varname, 1, 0); |
|
|
1431 |
|
1271
|
1432 // It is a programming error for a builtin symbol to be missing. |
|
|
1433 // Besides, we just inserted it, so it must be there. |
|
593
|
1434 |
|
|
1435 assert (sr); |
|
|
1436 |
|
|
1437 sr->unprotect (); |
|
|
1438 |
|
1271
|
1439 // Must do this before define, since define will call the special |
|
|
1440 // variable function only if it knows about it, and it needs to, so |
|
|
1441 // that user prefs can be properly initialized. |
|
593
|
1442 |
|
|
1443 if (sv_fcn) |
|
|
1444 sr->set_sv_function (sv_fcn); |
|
|
1445 |
|
|
1446 sr->define_builtin_var (val); |
|
|
1447 |
|
|
1448 if (protect) |
|
|
1449 sr->protect (); |
|
|
1450 |
|
|
1451 if (eternal) |
|
|
1452 sr->make_eternal (); |
|
|
1453 |
|
1755
|
1454 sr->document (help); |
|
529
|
1455 } |
|
|
1456 |
|
2205
|
1457 // XXX FIXME XXX -- some of these should do their own checking to be |
|
|
1458 // able to provide more meaningful warning or error messages. |
|
|
1459 |
|
|
1460 static int |
|
|
1461 echo_executing_commands (void) |
|
|
1462 { |
|
|
1463 Vecho_executing_commands = check_preference ("echo_executing_commands"); |
|
|
1464 |
|
|
1465 return 0; |
|
|
1466 } |
|
|
1467 |
|
|
1468 static int |
|
|
1469 history_size (void) |
|
|
1470 { |
|
|
1471 double val; |
|
|
1472 if (builtin_real_scalar_variable ("history_size", val) |
|
|
1473 && ! xisnan (val)) |
|
|
1474 { |
|
|
1475 int ival = NINT (val); |
|
|
1476 if (ival >= 0 && (double) ival == val) |
|
|
1477 { |
|
|
1478 Vhistory_size = ival; |
|
|
1479 octave_command_history.set_size (ival); |
|
|
1480 return 0; |
|
|
1481 } |
|
|
1482 } |
|
|
1483 gripe_invalid_value_specified ("history_size"); |
|
|
1484 return -1; |
|
|
1485 } |
|
|
1486 |
|
|
1487 static int |
|
|
1488 history_file (void) |
|
|
1489 { |
|
|
1490 int status = 0; |
|
|
1491 |
|
|
1492 string s = builtin_string_variable ("history_file"); |
|
2065
|
1493 |
|
2205
|
1494 if (s.empty ()) |
|
|
1495 { |
|
|
1496 gripe_invalid_value_specified ("history_file"); |
|
|
1497 status = -1; |
|
|
1498 } |
|
|
1499 else |
|
|
1500 { |
|
|
1501 Vhistory_file = s; |
|
|
1502 octave_command_history.set_file (oct_tilde_expand (s)); |
|
|
1503 } |
|
|
1504 |
|
|
1505 return status; |
|
|
1506 } |
|
|
1507 |
|
|
1508 static int |
|
|
1509 ignore_function_time_stamp (void) |
|
|
1510 { |
|
|
1511 int pref = 0; |
|
|
1512 |
|
|
1513 string val = builtin_string_variable ("ignore_function_time_stamp"); |
|
|
1514 |
|
|
1515 if (! val.empty ()) |
|
|
1516 { |
|
|
1517 if (val.compare ("all", 0, 3) == 0) |
|
|
1518 pref = 2; |
|
|
1519 if (val.compare ("system", 0, 6) == 0) |
|
|
1520 pref = 1; |
|
|
1521 } |
|
|
1522 |
|
|
1523 Vignore_function_time_stamp = pref; |
|
|
1524 |
|
|
1525 return 0; |
|
|
1526 } |
|
|
1527 |
|
|
1528 static int |
|
|
1529 saving_history (void) |
|
|
1530 { |
|
|
1531 Vsaving_history = check_preference ("saving_history"); |
|
|
1532 |
|
|
1533 octave_command_history.ignore_entries (! Vsaving_history); |
|
|
1534 |
|
|
1535 return 0; |
|
|
1536 } |
|
|
1537 |
|
|
1538 // XXX FIXME XXX -- there still may be better places for some of these |
|
|
1539 // to be defined. |
|
2065
|
1540 |
|
|
1541 static void |
|
2205
|
1542 symbols_of_variables (void) |
|
529
|
1543 { |
|
1957
|
1544 DEFVAR (ans, , 0, 0, |
|
593
|
1545 ""); |
|
|
1546 |
|
1957
|
1547 DEFCONST (argv, , 0, 0, |
|
1343
|
1548 "the command line arguments this program was invoked with"); |
|
|
1549 |
|
2205
|
1550 DEFVAR (echo_executing_commands, (double) ECHO_OFF, 0, |
|
|
1551 echo_executing_commands, |
|
|
1552 "echo commands as they are executed"); |
|
|
1553 |
|
1957
|
1554 DEFCONST (error_text, "", 0, 0, |
|
1489
|
1555 "the text of error messages that would have been printed in the |
|
|
1556 body of the most recent unwind_protect statement or the TRY part of\n\ |
|
|
1557 the most recent eval() command. Outside of unwind_protect and\n\ |
|
|
1558 eval(), or if no error has ocurred within them, the value of\n\ |
|
|
1559 __error_text__ is guaranteed to be the empty string."); |
|
|
1560 |
|
2205
|
1561 DEFVAR (history_file, default_history_file (), 0, history_file, |
|
1646
|
1562 "name of command history file"); |
|
|
1563 |
|
1957
|
1564 DEFVAR (history_size, default_history_size (), 0, history_size, |
|
1646
|
1565 "number of commands to save in the history list"); |
|
|
1566 |
|
1957
|
1567 DEFVAR (ignore_function_time_stamp, "system", 0, ignore_function_time_stamp, |
|
593
|
1568 "don't check to see if function files have changed since they were\n\ |
|
|
1569 last compiled. Possible values are \"system\" and \"all\""); |
|
|
1570 |
|
2205
|
1571 DEFCONST (program_invocation_name, Vprogram_invocation_name, 0, 0, |
|
1343
|
1572 "the full name of the current program or script, including the\n\ |
|
|
1573 directory specification"); |
|
|
1574 |
|
2205
|
1575 DEFCONST (program_name, Vprogram_name, 0, 0, |
|
1343
|
1576 "the name of the current program or script"); |
|
|
1577 |
|
1957
|
1578 DEFVAR (saving_history, 1.0, 0, saving_history, |
|
1643
|
1579 "save command history"); |
|
529
|
1580 } |
|
|
1581 |
|
2065
|
1582 void |
|
|
1583 install_builtin_variables (void) |
|
|
1584 { |
|
2205
|
1585 symbols_of_data (); |
|
|
1586 symbols_of_defaults (); |
|
|
1587 symbols_of_dirfns (); |
|
2181
|
1588 symbols_of_error (); |
|
2205
|
1589 symbols_of_file_io (); |
|
|
1590 symbols_of_help (); |
|
2181
|
1591 symbols_of_input (); |
|
|
1592 symbols_of_lex (); |
|
2205
|
1593 symbols_of_load_save (); |
|
2097
|
1594 symbols_of_pager (); |
|
2181
|
1595 symbols_of_parse (); |
|
|
1596 symbols_of_pr_output (); |
|
|
1597 symbols_of_pt_fcn (); |
|
|
1598 symbols_of_pt_mat (); |
|
|
1599 symbols_of_pt_plot (); |
|
2076
|
1600 symbols_of_syscalls (); |
|
2390
|
1601 symbols_of_value (); |
|
2205
|
1602 symbols_of_variables (); |
|
2065
|
1603 } |
|
|
1604 |
|
593
|
1605 // Deleting names from the symbol tables. |
|
|
1606 |
|
1957
|
1607 DEFUN_TEXT (clear, args, , |
|
668
|
1608 "clear [-x] [name ...]\n\ |
|
|
1609 \n\ |
|
|
1610 Clear symbol(s) matching a list of globbing patterns.\n\ |
|
593
|
1611 \n\ |
|
668
|
1612 If no arguments are given, clear all user-defined variables and |
|
|
1613 functions.\n\ |
|
|
1614 \n\ |
|
|
1615 With -x, exclude the named variables") |
|
529
|
1616 { |
|
2086
|
1617 octave_value_list retval; |
|
593
|
1618 |
|
1755
|
1619 int argc = args.length () + 1; |
|
593
|
1620 |
|
1968
|
1621 string_vector argv = args.make_argv ("clear"); |
|
1755
|
1622 |
|
|
1623 if (error_state) |
|
|
1624 return retval; |
|
668
|
1625 |
|
1271
|
1626 // Always clear the local table, but don't clear currently compiled |
|
|
1627 // functions unless we are at the top level. (Allowing that to |
|
|
1628 // happen inside functions would result in pretty odd behavior...) |
|
593
|
1629 |
|
|
1630 int clear_user_functions = (curr_sym_tab == top_level_sym_tab); |
|
|
1631 |
|
1755
|
1632 if (argc == 1) |
|
593
|
1633 { |
|
|
1634 curr_sym_tab->clear (); |
|
|
1635 global_sym_tab->clear (clear_user_functions); |
|
|
1636 } |
|
529
|
1637 else |
|
|
1638 { |
|
668
|
1639 int exclusive = 0; |
|
|
1640 |
|
1755
|
1641 int idx = 1; |
|
|
1642 |
|
|
1643 if (argc > 1) |
|
668
|
1644 { |
|
1755
|
1645 if (argv[idx] == "-x") |
|
|
1646 exclusive = 1; |
|
668
|
1647 } |
|
|
1648 |
|
|
1649 int lcount = 0; |
|
|
1650 int gcount = 0; |
|
|
1651 int fcount = 0; |
|
529
|
1652 |
|
1755
|
1653 string_vector lvars; |
|
|
1654 string_vector gvars; |
|
|
1655 string_vector fcns; |
|
668
|
1656 |
|
|
1657 if (argc > 0) |
|
593
|
1658 { |
|
893
|
1659 lvars = curr_sym_tab->list (lcount, 0, 0, 0, |
|
1418
|
1660 SYMTAB_VARIABLES, |
|
668
|
1661 SYMTAB_LOCAL_SCOPE); |
|
|
1662 |
|
893
|
1663 gvars = curr_sym_tab->list (gcount, 0, 0, 0, |
|
1418
|
1664 SYMTAB_VARIABLES, |
|
668
|
1665 SYMTAB_GLOBAL_SCOPE); |
|
|
1666 |
|
893
|
1667 fcns = global_sym_tab->list (fcount, 0, 0, 0, |
|
|
1668 symbol_def::USER_FUNCTION, |
|
864
|
1669 SYMTAB_ALL_SCOPES); |
|
668
|
1670 } |
|
|
1671 |
|
2438
|
1672 // XXX FIXME XXX -- this needs to be optimized to avoid the |
|
|
1673 // pattern matching code if the string doesn't contain any |
|
|
1674 // globbing patterns. |
|
|
1675 |
|
1970
|
1676 for (int k = idx; k < argc; k++) |
|
668
|
1677 { |
|
1755
|
1678 string patstr = argv[k]; |
|
668
|
1679 |
|
1755
|
1680 if (! patstr.empty ()) |
|
593
|
1681 { |
|
1792
|
1682 glob_match pattern (patstr); |
|
1755
|
1683 |
|
593
|
1684 int i; |
|
|
1685 for (i = 0; i < lcount; i++) |
|
|
1686 { |
|
1755
|
1687 string nm = lvars[i]; |
|
1792
|
1688 int match = pattern.match (nm); |
|
668
|
1689 if ((exclusive && ! match) || (! exclusive && match)) |
|
|
1690 curr_sym_tab->clear (nm); |
|
593
|
1691 } |
|
529
|
1692 |
|
593
|
1693 int count; |
|
|
1694 for (i = 0; i < gcount; i++) |
|
|
1695 { |
|
1755
|
1696 string nm = gvars[i]; |
|
1792
|
1697 int match = pattern.match (nm); |
|
668
|
1698 if ((exclusive && ! match) || (! exclusive && match)) |
|
593
|
1699 { |
|
668
|
1700 count = curr_sym_tab->clear (nm); |
|
593
|
1701 if (count > 0) |
|
668
|
1702 global_sym_tab->clear (nm, clear_user_functions); |
|
593
|
1703 } |
|
|
1704 } |
|
529
|
1705 |
|
593
|
1706 for (i = 0; i < fcount; i++) |
|
|
1707 { |
|
1755
|
1708 string nm = fcns[i]; |
|
1792
|
1709 int match = pattern.match (nm); |
|
668
|
1710 if ((exclusive && ! match) || (! exclusive && match)) |
|
593
|
1711 { |
|
668
|
1712 count = curr_sym_tab->clear (nm); |
|
864
|
1713 global_sym_tab->clear (nm, clear_user_functions); |
|
593
|
1714 } |
|
|
1715 } |
|
|
1716 } |
|
|
1717 } |
|
|
1718 } |
|
|
1719 |
|
|
1720 return retval; |
|
529
|
1721 } |
|
|
1722 |
|
1
|
1723 /* |
|
|
1724 ;;; Local Variables: *** |
|
|
1725 ;;; mode: C++ *** |
|
|
1726 ;;; End: *** |
|
|
1727 */ |
