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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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4192
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23 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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1297
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24 #pragma implementation |
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25 #endif |
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26 |
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240
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27 #ifdef HAVE_CONFIG_H |
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1192
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28 #include <config.h> |
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29 #endif |
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30 |
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3013
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31 #include <cassert> |
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1962
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32 #include <cctype> |
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3013
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33 #include <climits> |
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4914
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34 #include <cstdio> |
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3013
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35 |
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3503
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36 #include <iomanip> |
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37 #include <fstream> |
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1962
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38 |
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2926
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39 #include "glob-match.h" |
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1755
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40 #include "str-vec.h" |
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41 |
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3308
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42 #include "defun.h" |
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1352
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43 #include "error.h" |
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2979
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44 #include "oct-lvalue.h" |
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2975
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45 #include "ov.h" |
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3356
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46 #include "pt-pr-code.h" |
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1755
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47 #include "symtab.h" |
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1
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48 #include "utils.h" |
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1352
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49 #include "variables.h" |
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1
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50 |
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4913
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51 #include "gripes.h" |
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52 #include "lo-mappers.h" |
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53 |
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54 #include "parse.h" |
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55 |
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4238
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56 unsigned long int symbol_table::symtab_count = 0; |
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57 |
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3308
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58 // Should variables be allowed to hide functions of the same name? A |
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59 // positive value means yes. A negative value means yes, but print a |
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60 // warning message. Zero means it should be considered an error. |
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61 static int Vvariables_can_hide_functions; |
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62 |
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4238
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63 // Nonzero means we print debugging info about symbol table lookups. |
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64 static int Vdebug_symtab_lookups; |
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65 |
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4913
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66 // Defines layout for the whos/who -long command |
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67 std::string Vwhos_line_format; |
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68 |
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3013
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69 octave_allocator |
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70 symbol_record::symbol_def::allocator (sizeof (symbol_record::symbol_def)); |
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195
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71 |
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3355
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72 #define SYMBOL_DEF symbol_record::symbol_def |
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73 |
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3536
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74 std::string |
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3355
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75 SYMBOL_DEF::type_as_string (void) const |
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76 { |
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3523
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77 std::string retval = "<unknown type>"; |
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3355
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78 |
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79 if (is_user_variable ()) |
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80 retval = "user-defined variable"; |
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4208
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81 else if (is_command ()) |
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82 retval = "built-in command"; |
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3355
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83 else if (is_mapper_function ()) |
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84 retval = "built-in mapper function"; |
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85 else if (is_user_function ()) |
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86 retval = "user-defined function"; |
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87 else if (is_builtin_constant ()) |
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88 retval = "built-in constant"; |
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89 else if (is_builtin_variable ()) |
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90 retval = "built-in variable"; |
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91 else if (is_builtin_function ()) |
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92 retval = "built-in function"; |
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93 else if (is_dld_function ()) |
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94 retval = "dynamically-linked function"; |
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95 |
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96 return retval; |
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97 } |
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98 |
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3356
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99 void |
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3523
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100 SYMBOL_DEF::type (std::ostream& os, const std::string& name, bool pr_type_info, |
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3356
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101 bool quiet, bool pr_orig_txt) |
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102 { |
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103 if (is_user_function ()) |
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104 { |
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105 octave_function *defn = definition.function_value (); |
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106 |
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3523
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107 std::string fn = defn ? defn->fcn_file_name () : std::string (); |
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3356
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108 |
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109 if (pr_orig_txt && ! fn.empty ()) |
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110 { |
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3544
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111 std::ifstream fs (fn.c_str (), std::ios::in); |
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3356
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112 |
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113 if (fs) |
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114 { |
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115 if (pr_type_info && ! quiet) |
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116 os << name << " is the " << type_as_string () |
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117 << " defined from: " << fn << "\n\n"; |
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118 |
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119 char ch; |
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120 |
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121 while (fs.get (ch)) |
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122 os << ch; |
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123 } |
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124 else |
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125 os << "unable to open `" << fn << "' for reading!\n"; |
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126 } |
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127 else |
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128 { |
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129 if (pr_type_info && ! quiet) |
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130 os << name << " is a " << type_as_string () << ":\n\n"; |
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131 |
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132 tree_print_code tpc (os, "", pr_orig_txt); |
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133 |
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134 defn->accept (tpc); |
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135 } |
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136 } |
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137 else if (is_user_variable () |
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138 || is_builtin_variable () |
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139 || is_builtin_constant ()) |
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140 { |
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141 if (pr_type_info && ! quiet) |
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142 os << name << " is a " << type_as_string () << "\n"; |
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143 |
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144 definition.print_raw (os, true); |
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145 |
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146 if (pr_type_info) |
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147 os << "\n"; |
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148 } |
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149 else |
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150 os << name << " is a " << type_as_string () << "\n"; |
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151 } |
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152 |
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3536
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153 std::string |
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3523
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154 SYMBOL_DEF::which (const std::string& name) |
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3355
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155 { |
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3523
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156 std::string retval; |
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3355
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157 |
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158 if (is_user_function () || is_dld_function ()) |
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159 { |
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160 octave_function *defn = definition.function_value (); |
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161 |
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162 if (defn) |
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163 retval = defn->fcn_file_name (); |
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164 } |
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165 else |
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166 retval = name + " is a " + type_as_string (); |
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167 |
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168 return retval; |
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169 } |
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170 |
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3239
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171 void |
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3523
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172 SYMBOL_DEF::which (std::ostream& os, const std::string& name) |
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3355
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173 { |
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174 os << name; |
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175 |
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176 if (is_user_function () || is_dld_function ()) |
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177 { |
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178 octave_function *defn = definition.function_value (); |
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179 |
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3523
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180 std::string fn = defn ? defn->fcn_file_name () : std::string (); |
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3355
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181 |
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182 if (! fn.empty ()) |
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183 { |
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184 os << " is the " << type_as_string () << " from the file\n" |
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185 << fn << "\n"; |
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186 |
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187 return; |
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188 } |
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189 } |
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190 |
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191 os << " is a " << type_as_string () << "\n"; |
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192 } |
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193 |
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194 void |
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3944
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195 SYMBOL_DEF::print_info (std::ostream& os, const std::string& prefix) const |
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3239
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196 { |
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3933
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197 os << prefix << "symbol_def::count: " << count << "\n"; |
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198 |
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199 definition.print_info (os, prefix + " "); |
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3239
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200 } |
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201 |
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767
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202 // Individual records in a symbol table. |
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203 |
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572
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204 void |
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3523
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205 symbol_record::rename (const std::string& new_name) |
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572
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206 { |
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2791
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207 if (! read_only_error ("rename")) |
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208 nm = new_name; |
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572
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209 } |
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210 |
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3013
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211 void |
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212 symbol_record::define (const octave_value& v, unsigned int sym_type) |
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195
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213 { |
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3013
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214 if (! (is_variable () && read_only_error ("redefine"))) |
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215 { |
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216 if (definition->type () == symbol_record::BUILTIN_VARIABLE) |
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217 sym_type = symbol_record::BUILTIN_VARIABLE; |
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218 |
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3013
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219 definition->define (v, sym_type); |
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195
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220 } |
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221 } |
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222 |
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223 void |
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224 symbol_record::define_builtin_var (const octave_value& v) |
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195
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225 { |
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226 define (v, symbol_record::BUILTIN_VARIABLE); |
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195
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227 |
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3013
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228 if (chg_fcn) |
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229 chg_fcn (); |
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1
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230 } |
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231 |
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3013
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232 bool |
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3258
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233 symbol_record::define_builtin_const (const octave_value& v) |
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1
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234 { |
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3013
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235 bool retval = false; |
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1
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236 |
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3258
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237 if (! read_only_error ("redefine")) |
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195
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238 { |
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3811
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239 definition->define (v, symbol_record::BUILTIN_CONSTANT); |
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2893
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240 |
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3013
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241 retval = true; |
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1
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242 } |
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243 |
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2893
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244 return retval; |
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2390
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245 } |
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246 |
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3013
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247 bool |
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248 symbol_record::define (octave_function *f, unsigned int sym_type) |
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1
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249 { |
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3013
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250 bool retval = false; |
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2949
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251 |
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3013
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252 if (! read_only_error ("redefine")) |
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253 { |
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254 octave_value tmp (f); |
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255 |
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4261
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256 if (! definition) |
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257 definition = new symbol_def (tmp, sym_type); |
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258 else |
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259 definition->define (tmp, sym_type); |
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3013
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260 |
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261 retval = true; |
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262 } |
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2949
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263 |
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264 return retval; |
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1
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265 } |
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266 |
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267 void |
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195
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268 symbol_record::clear (void) |
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1
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269 { |
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4261
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270 if (is_defined ()) |
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1
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271 { |
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4261
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272 if (! tagged_static) |
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273 { |
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274 if (--definition->count <= 0) |
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275 delete definition; |
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3013
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276 |
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4261
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277 definition = new symbol_def (); |
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278 } |
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3013
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279 |
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4261
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280 if (linked_to_global) |
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281 linked_to_global = 0; |
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282 } |
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1
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283 } |
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284 |
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285 void |
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4009
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286 symbol_record::alias (symbol_record *s) |
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1
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287 { |
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3013
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288 chg_fcn = s->chg_fcn; |
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195
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289 |
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4009
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290 if (--definition->count <= 0) |
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291 delete definition; |
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292 |
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293 definition = (s->definition); |
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3013
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294 |
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295 definition->count++; |
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1
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296 } |
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297 |
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298 void |
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299 symbol_record::mark_as_formal_parameter (void) |
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300 { |
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3013
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301 if (is_linked_to_global ()) |
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302 error ("can't mark global variable `%s' as function parameter", |
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303 nm.c_str ()); |
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304 else if (is_static ()) |
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305 error ("can't mark static variable `%s' as function paraemter", |
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306 nm.c_str ()); |
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307 else |
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308 formal_param = 1; |
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1
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309 } |
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310 |
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311 void |
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195
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312 symbol_record::mark_as_linked_to_global (void) |
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122
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313 { |
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2975
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314 if (is_formal_parameter ()) |
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315 error ("can't make function parameter `%s' global", nm.c_str ()); |
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316 else if (is_static ()) |
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317 error ("can't make static variable `%s' global", nm.c_str ()); |
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318 else |
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319 linked_to_global = 1; |
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122
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320 } |
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321 |
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2846
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322 void |
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323 symbol_record::mark_as_static (void) |
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324 { |
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325 if (is_linked_to_global ()) |
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2975
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326 error ("can't make global variable `%s' static", nm.c_str ()); |
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2846
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327 else if (is_formal_parameter ()) |
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2975
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328 error ("can't make formal parameter `%s' static", nm.c_str ()); |
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2846
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329 else |
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330 tagged_static = 1; |
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331 } |
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332 |
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2975
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333 octave_value& |
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334 symbol_record::variable_value (void) |
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2390
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335 { |
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2975
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336 static octave_value foo; |
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2390
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337 |
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2975
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338 return is_variable () ? def () : foo; |
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2390
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339 } |
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340 |
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3258
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341 inline void |
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342 symbol_record::link_to_builtin_variable (void) |
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343 { |
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4009
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344 symbol_record *tmp_sym = fbi_sym_tab->lookup (name ()); |
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3258
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345 |
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346 if (tmp_sym && tmp_sym->is_builtin_variable ()) |
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347 alias (tmp_sym); |
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348 } |
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349 |
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2979
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350 octave_lvalue |
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2390
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351 symbol_record::variable_reference (void) |
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352 { |
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4234
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353 if ((Vvariables_can_hide_functions <= 0 || ! can_hide_function) |
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3308
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354 && (is_function () |
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355 || (! is_defined () && is_valid_function (nm)))) |
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356 { |
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4234
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357 if (Vvariables_can_hide_functions < 0 && can_hide_function) |
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3308
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358 warning ("variable `%s' hides function", nm.c_str ()); |
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359 else |
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360 { |
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361 error ("variable `%s' hides function", nm.c_str ()); |
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362 return octave_lvalue (); |
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363 } |
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364 } |
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365 |
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3258
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366 if (is_function () || is_constant ()) |
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2390
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367 clear (); |
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368 |
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369 if (! is_defined ()) |
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370 { |
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371 if (! (is_formal_parameter () || is_linked_to_global ())) |
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3258
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372 link_to_builtin_variable (); |
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2390
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373 |
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374 if (! is_defined ()) |
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2975
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375 { |
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376 octave_value tmp; |
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377 define (tmp); |
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378 } |
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2390
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379 } |
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380 |
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3013
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381 return octave_lvalue (&(def ()), chg_fcn); |
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195
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382 } |
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383 |
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220
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384 void |
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385 symbol_record::push_context (void) |
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386 { |
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2846
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387 if (! is_static ()) |
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388 { |
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389 context.push (definition); |
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3013
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390 |
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391 definition = new symbol_def (); |
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395
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392 |
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2893
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393 global_link_context.push (static_cast<unsigned int> (linked_to_global)); |
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3013
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394 |
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2846
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395 linked_to_global = 0; |
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396 } |
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220
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397 } |
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398 |
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399 void |
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400 symbol_record::pop_context (void) |
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401 { |
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1653
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402 // It is possible for context to be empty if new symbols have been |
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403 // inserted in the symbol table during recursive calls. This can |
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404 // happen as a result of calls to eval() and feval(). |
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220
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405 |
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1653
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406 if (! context.empty ()) |
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220
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407 { |
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4009
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408 if (--definition->count <= 0) |
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409 delete definition; |
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410 |
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4214
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411 definition = context.top (); |
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412 context.pop (); |
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1653
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413 |
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4214
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414 linked_to_global = global_link_context.top (); |
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415 global_link_context.pop (); |
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220
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416 } |
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417 } |
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418 |
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4914
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419 // Calculate how much space needs to be reserved for the first part of |
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420 // the dimensions string. For example, |
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421 // |
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422 // mat is a 12x3 matrix |
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423 // ^^ => 2 columns |
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424 |
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4913
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425 int |
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4914
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426 symbol_record::dimensions_string_req_first_space (int print_dims) const |
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3013
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427 { |
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4913
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428 long dim = 0; |
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429 int first_param_space = 0; |
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430 |
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4914
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431 // Calculating dimensions. |
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432 |
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4913
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433 std::string dim_str = ""; |
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434 std::stringstream ss; |
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435 dim_vector dimensions; |
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436 |
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437 if (is_variable ()) |
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438 { |
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4914
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439 if (is_matrix_type ()) |
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4913
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440 { |
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441 dimensions = dims (); |
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442 dim = dimensions.length (); |
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443 } |
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444 } |
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445 |
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446 first_param_space = (first_param_space >= 1 ? first_param_space : 1); |
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447 |
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4914
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448 // Preparing dimension string. |
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449 |
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4913
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450 if ((dim <= print_dims || print_dims < 0) && print_dims != 0) |
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451 { |
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4914
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452 // Dimensions string must be printed like this: 2x3x4x2. |
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453 |
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4913
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454 if (dim == 0 || dim == 1) |
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4914
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455 first_param_space = 1; // First parameter is 1. |
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4913
|
456 else |
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457 { |
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458 ss << dimensions (0); |
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4914
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459 |
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4913
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460 dim_str = ss.str (); |
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461 first_param_space = dim_str.length (); |
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462 } |
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463 } |
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4914
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464 else |
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4913
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465 { |
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4914
|
466 // Printing dimension string as: a-D. |
|
|
467 |
|
4913
|
468 ss << dim; |
|
3013
|
469 |
|
4913
|
470 dim_str = ss.str (); |
|
|
471 first_param_space = dim_str.length (); |
|
|
472 } |
|
|
473 |
|
|
474 return first_param_space; |
|
|
475 } |
|
|
476 |
|
4914
|
477 // Calculate how much space needs to be reserved for the the |
|
|
478 // dimensions string. For example, |
|
|
479 // |
|
|
480 // mat is a 12x3 matrix |
|
|
481 // ^^^^ => 4 columns |
|
|
482 |
|
4913
|
483 int |
|
|
484 symbol_record::dimensions_string_req_total_space (int print_dims) const |
|
|
485 { |
|
|
486 std::string dim_str = ""; |
|
|
487 std::stringstream ss; |
|
|
488 |
|
|
489 ss << make_dimensions_string (print_dims); |
|
|
490 dim_str = ss.str (); |
|
|
491 |
|
|
492 return dim_str.length (); |
|
|
493 } |
|
3013
|
494 |
|
4914
|
495 // Make the dimensions-string. For example: mat is a 2x3 matrix. |
|
|
496 // ^^^ |
|
|
497 |
|
4913
|
498 std::string |
|
4914
|
499 symbol_record::make_dimensions_string (int print_dims) const |
|
4913
|
500 { |
|
|
501 long dim = 0; |
|
|
502 |
|
4914
|
503 // Calculating dimensions. |
|
|
504 |
|
4913
|
505 std::string dim_str = ""; |
|
|
506 std::stringstream ss; |
|
|
507 dim_vector dimensions; |
|
|
508 |
|
|
509 if (is_variable ()) |
|
|
510 { |
|
4914
|
511 if (is_matrix_type ()) |
|
4913
|
512 { |
|
|
513 dimensions = dims (); |
|
|
514 dim = dimensions.length (); |
|
|
515 } |
|
|
516 } |
|
3013
|
517 |
|
4914
|
518 // Preparing dimension string. |
|
|
519 |
|
4913
|
520 if ((dim <= print_dims || print_dims < 0) && print_dims != 0) |
|
|
521 { |
|
|
522 // Only printing the dimension string as: axbxc... |
|
4914
|
523 |
|
4913
|
524 if (dim == 0) |
|
|
525 ss << "1x1"; |
|
|
526 else |
|
|
527 { |
|
4914
|
528 for (int i = 0; i < dim; i++) |
|
4913
|
529 { |
|
|
530 if (i == 0) |
|
|
531 { |
|
|
532 if (dim == 1) |
|
4914
|
533 { |
|
|
534 // Looks like this is not going to happen in |
|
|
535 // Octave, but ... |
|
|
536 |
|
|
537 ss << "1x" << dimensions (i); |
|
|
538 } |
|
4913
|
539 else |
|
|
540 ss << dimensions (i); |
|
|
541 } |
|
4914
|
542 else if (i < dim && dim != 1) |
|
4913
|
543 ss << "x" << dimensions (i); |
|
|
544 } |
|
|
545 } |
|
|
546 } |
|
4914
|
547 else |
|
4913
|
548 { |
|
4914
|
549 // Printing dimension string as: a-D. |
|
|
550 |
|
4913
|
551 ss << dim << "-D"; |
|
|
552 } |
|
|
553 |
|
|
554 dim_str = ss.str (); |
|
|
555 |
|
|
556 return dim_str; |
|
|
557 } |
|
|
558 |
|
4914
|
559 // Print a line of information on a given symbol. |
|
|
560 |
|
4913
|
561 void |
|
|
562 symbol_record::print_symbol_info_line (std::ostream& os, |
|
|
563 std::list<whos_parameter>& params) const |
|
|
564 { |
|
|
565 std::list<whos_parameter>::iterator i = params.begin (); |
|
|
566 while (i != params.end ()) |
|
|
567 { |
|
|
568 whos_parameter param = * i; |
|
|
569 |
|
|
570 if (param.command != '\0') |
|
|
571 { |
|
4914
|
572 // Do the actual printing. |
|
|
573 |
|
4913
|
574 switch (param.modifier) |
|
|
575 { |
|
|
576 case 'l': |
|
4914
|
577 os << std::setiosflags (std::ios::left) |
|
|
578 << std::setw (param.parameter_length); |
|
4913
|
579 break; |
|
|
580 |
|
|
581 case 'r': |
|
4914
|
582 os << std::setiosflags (std::ios::right) |
|
|
583 << std::setw (param.parameter_length); |
|
4913
|
584 break; |
|
|
585 |
|
|
586 case 'c': |
|
|
587 if (param.command == 's') |
|
|
588 { |
|
4914
|
589 int front = param.first_parameter_length |
|
|
590 - dimensions_string_req_first_space (param.dimensions); |
|
|
591 int back = param.parameter_length |
|
|
592 - dimensions_string_req_total_space (param.dimensions) |
|
|
593 - front; |
|
4913
|
594 front = (front > 0) ? front : 0; |
|
|
595 back = (back > 0) ? back : 0; |
|
3013
|
596 |
|
4914
|
597 os << std::setiosflags (std::ios::left) |
|
4913
|
598 << std::setw (front) |
|
4914
|
599 << "" |
|
|
600 << std::resetiosflags (std::ios::left) |
|
4913
|
601 << make_dimensions_string (param.dimensions) |
|
|
602 << std::setiosflags (std::ios::left) |
|
|
603 << std::setw (back) |
|
4914
|
604 << "" |
|
|
605 << std::resetiosflags (std::ios::left); |
|
4913
|
606 } |
|
|
607 else |
|
|
608 { |
|
|
609 os << std::setiosflags (std::ios::left) |
|
|
610 << std::setw (param.parameter_length); |
|
|
611 } |
|
|
612 break; |
|
|
613 |
|
|
614 default: |
|
4914
|
615 error ("whos_line_format: modifier `%c' unknown", |
|
|
616 param.modifier); |
|
|
617 |
|
4913
|
618 os << std::setiosflags (std::ios::right) |
|
|
619 << std::setw (param.parameter_length); |
|
|
620 } |
|
|
621 |
|
|
622 switch (param.command) |
|
|
623 { |
|
|
624 case 'b': |
|
|
625 os << byte_size (); |
|
|
626 break; |
|
|
627 |
|
|
628 case 'e': |
|
|
629 os << numel (); |
|
|
630 break; |
|
|
631 |
|
|
632 case 'n': |
|
|
633 os << name (); |
|
|
634 break; |
|
3013
|
635 |
|
4913
|
636 case 'p': |
|
|
637 { |
|
|
638 std::stringstream ss; |
|
|
639 std::string str; |
|
|
640 |
|
|
641 ss << (is_read_only () ? "r-" : "rw") |
|
|
642 << (is_static () || is_eternal () ? "-" : "d"); |
|
|
643 str = ss.str (); |
|
|
644 |
|
|
645 os << str; |
|
|
646 } |
|
|
647 break; |
|
|
648 |
|
|
649 case 's': |
|
|
650 if (param.modifier != 'c') |
|
|
651 os << make_dimensions_string (param.dimensions); |
|
|
652 break; |
|
3013
|
653 |
|
4913
|
654 case 't': |
|
|
655 os << type_name (); |
|
|
656 break; |
|
4914
|
657 |
|
|
658 default: |
|
4913
|
659 error ("whos_line_format: command `%c' unknown", param.command); |
|
|
660 } |
|
|
661 |
|
|
662 os << std::resetiosflags (std::ios::left) |
|
|
663 << std::resetiosflags (std::ios::right); |
|
|
664 i++; |
|
|
665 } |
|
|
666 else |
|
|
667 { |
|
|
668 os << param.text; |
|
|
669 i++; |
|
|
670 } |
|
|
671 } |
|
3013
|
672 } |
|
|
673 |
|
3239
|
674 void |
|
3944
|
675 symbol_record::print_info (std::ostream& os, const std::string& prefix) const |
|
3239
|
676 { |
|
|
677 if (definition) |
|
3933
|
678 definition->print_info (os, prefix); |
|
3239
|
679 else |
|
3933
|
680 os << prefix << "symbol " << name () << " is undefined\n"; |
|
3239
|
681 } |
|
|
682 |
|
3013
|
683 bool |
|
2791
|
684 symbol_record::read_only_error (const char *action) |
|
195
|
685 { |
|
|
686 if (is_read_only ()) |
|
|
687 { |
|
3258
|
688 if (is_variable () || is_constant ()) |
|
3013
|
689 ::error ("can't %s read-only constant `%s'", action, nm.c_str ()); |
|
195
|
690 else if (is_function ()) |
|
3013
|
691 ::error ("can't %s read-only function `%s'", action, nm.c_str ()); |
|
1045
|
692 else |
|
3013
|
693 ::error ("can't %s read-only symbol `%s'", action, nm.c_str ()); |
|
195
|
694 |
|
3013
|
695 return true; |
|
195
|
696 } |
|
|
697 else |
|
3013
|
698 return false; |
|
195
|
699 } |
|
|
700 |
|
767
|
701 // A symbol table. |
|
1
|
702 |
|
5013
|
703 symbol_table::~symbol_table (void) |
|
|
704 { |
|
|
705 for (unsigned int i = 0; i < table_size; i++) |
|
|
706 { |
|
|
707 symbol_record *ptr = table[i].next (); |
|
|
708 |
|
|
709 while (ptr) |
|
|
710 { |
|
|
711 symbol_record *tmp = ptr; |
|
|
712 |
|
|
713 ptr = ptr->next (); |
|
|
714 |
|
|
715 delete tmp; |
|
|
716 } |
|
|
717 } |
|
|
718 |
|
|
719 delete [] table; |
|
|
720 } |
|
|
721 |
|
1
|
722 symbol_record * |
|
3523
|
723 symbol_table::lookup (const std::string& nm, bool insert, bool warn) |
|
1
|
724 { |
|
4238
|
725 if (Vdebug_symtab_lookups) |
|
|
726 { |
|
4269
|
727 std::cerr << (table_name.empty () ? std::string ("???") : table_name) |
|
4238
|
728 << " symtab::lookup [" |
|
|
729 << (insert ? "I" : "-") |
|
|
730 << (warn ? "W" : "-") |
|
|
731 << "] \"" << nm << "\"\n"; |
|
|
732 } |
|
|
733 |
|
3013
|
734 unsigned int index = hash (nm); |
|
1
|
735 |
|
|
736 symbol_record *ptr = table[index].next (); |
|
|
737 |
|
530
|
738 while (ptr) |
|
1
|
739 { |
|
1755
|
740 if (ptr->name () == nm) |
|
1
|
741 return ptr; |
|
3013
|
742 |
|
1
|
743 ptr = ptr->next (); |
|
|
744 } |
|
|
745 |
|
|
746 if (insert) |
|
|
747 { |
|
3013
|
748 symbol_record *sr = new symbol_record (nm, table[index].next ()); |
|
|
749 |
|
|
750 table[index].chain (sr); |
|
|
751 |
|
|
752 return sr; |
|
1
|
753 } |
|
|
754 else if (warn) |
|
3356
|
755 warning ("lookup: symbol `%s' not found", nm.c_str ()); |
|
1
|
756 |
|
530
|
757 return 0; |
|
1
|
758 } |
|
|
759 |
|
|
760 void |
|
3523
|
761 symbol_table::rename (const std::string& old_name, const std::string& new_name) |
|
572
|
762 { |
|
4238
|
763 if (Vdebug_symtab_lookups) |
|
|
764 { |
|
4269
|
765 std::cerr << (table_name.empty () ? std::string ("???") : table_name) |
|
4238
|
766 << " symtab::rename " |
|
|
767 << "\"" << old_name << "\"" |
|
|
768 << " to " |
|
|
769 << "\"" << new_name << "\"\n"; |
|
|
770 } |
|
|
771 |
|
3013
|
772 unsigned int index = hash (old_name); |
|
572
|
773 |
|
|
774 symbol_record *prev = &table[index]; |
|
|
775 symbol_record *ptr = prev->next (); |
|
|
776 |
|
|
777 while (ptr) |
|
|
778 { |
|
1755
|
779 if (ptr->name () == old_name) |
|
572
|
780 { |
|
|
781 ptr->rename (new_name); |
|
|
782 |
|
2791
|
783 if (! error_state) |
|
|
784 { |
|
|
785 prev->chain (ptr->next ()); |
|
|
786 |
|
3013
|
787 index = hash (new_name); |
|
3125
|
788 ptr->chain (table[index].next ()); |
|
2791
|
789 table[index].chain (ptr); |
|
|
790 |
|
|
791 return; |
|
|
792 } |
|
|
793 |
|
|
794 break; |
|
572
|
795 } |
|
|
796 |
|
|
797 prev = ptr; |
|
|
798 ptr = ptr->next (); |
|
|
799 } |
|
|
800 |
|
1755
|
801 error ("unable to rename `%s' to `%s'", old_name.c_str (), |
|
|
802 new_name.c_str ()); |
|
572
|
803 } |
|
|
804 |
|
4009
|
805 // XXX FIXME XXX -- it would be nice to eliminate a lot of the |
|
|
806 // following duplicate code. |
|
|
807 |
|
572
|
808 void |
|
4009
|
809 symbol_table::clear (void) |
|
|
810 { |
|
|
811 for (unsigned int i = 0; i < table_size; i++) |
|
|
812 { |
|
|
813 symbol_record *ptr = table[i].next (); |
|
|
814 |
|
|
815 while (ptr) |
|
|
816 { |
|
|
817 ptr->clear (); |
|
|
818 |
|
|
819 ptr = ptr->next (); |
|
|
820 } |
|
|
821 } |
|
|
822 } |
|
|
823 |
|
|
824 void |
|
|
825 symbol_table::clear_variables (void) |
|
|
826 { |
|
|
827 for (unsigned int i = 0; i < table_size; i++) |
|
|
828 { |
|
|
829 symbol_record *ptr = table[i].next (); |
|
|
830 |
|
|
831 while (ptr) |
|
|
832 { |
|
|
833 if (ptr->is_user_variable ()) |
|
|
834 ptr->clear (); |
|
|
835 |
|
|
836 ptr = ptr->next (); |
|
|
837 } |
|
|
838 } |
|
|
839 } |
|
|
840 |
|
|
841 // Really only clear functions that can be reloaded. |
|
|
842 |
|
|
843 void |
|
|
844 symbol_table::clear_functions (void) |
|
1
|
845 { |
|
3013
|
846 for (unsigned int i = 0; i < table_size; i++) |
|
1
|
847 { |
|
169
|
848 symbol_record *ptr = table[i].next (); |
|
1
|
849 |
|
530
|
850 while (ptr) |
|
169
|
851 { |
|
4009
|
852 if (ptr->is_user_function () || ptr->is_dld_function ()) |
|
|
853 ptr->clear (); |
|
|
854 |
|
|
855 ptr = ptr->next (); |
|
|
856 } |
|
|
857 } |
|
|
858 } |
|
|
859 |
|
|
860 void |
|
|
861 symbol_table::clear_globals (void) |
|
|
862 { |
|
|
863 for (unsigned int i = 0; i < table_size; i++) |
|
|
864 { |
|
|
865 symbol_record *ptr = table[i].next (); |
|
|
866 |
|
|
867 while (ptr) |
|
|
868 { |
|
|
869 if (ptr->is_user_variable () && ptr->is_linked_to_global ()) |
|
|
870 ptr->clear (); |
|
195
|
871 |
|
169
|
872 ptr = ptr->next (); |
|
1
|
873 } |
|
|
874 } |
|
|
875 } |
|
|
876 |
|
3013
|
877 bool |
|
4009
|
878 symbol_table::clear (const std::string& nm) |
|
|
879 { |
|
|
880 unsigned int index = hash (nm); |
|
|
881 |
|
|
882 symbol_record *ptr = table[index].next (); |
|
|
883 |
|
|
884 while (ptr) |
|
|
885 { |
|
|
886 if (ptr->name () == nm) |
|
|
887 { |
|
|
888 ptr->clear (); |
|
|
889 return true; |
|
|
890 } |
|
|
891 ptr = ptr->next (); |
|
|
892 } |
|
|
893 |
|
|
894 return false; |
|
|
895 } |
|
|
896 |
|
|
897 bool |
|
|
898 symbol_table::clear_variable (const std::string& nm) |
|
|
899 { |
|
|
900 unsigned int index = hash (nm); |
|
|
901 |
|
|
902 symbol_record *ptr = table[index].next (); |
|
|
903 |
|
|
904 while (ptr) |
|
|
905 { |
|
|
906 if (ptr->name () == nm && ptr->is_user_variable ()) |
|
|
907 { |
|
|
908 ptr->clear (); |
|
|
909 return true; |
|
|
910 } |
|
|
911 ptr = ptr->next (); |
|
|
912 } |
|
|
913 |
|
|
914 return false; |
|
|
915 } |
|
|
916 |
|
|
917 bool |
|
|
918 symbol_table::clear_global (const std::string& nm) |
|
1
|
919 { |
|
3013
|
920 unsigned int index = hash (nm); |
|
1
|
921 |
|
195
|
922 symbol_record *ptr = table[index].next (); |
|
1
|
923 |
|
530
|
924 while (ptr) |
|
1
|
925 { |
|
1755
|
926 if (ptr->name () == nm |
|
4009
|
927 && ptr->is_user_variable () |
|
|
928 && ptr->is_linked_to_global ()) |
|
|
929 { |
|
|
930 ptr->clear (); |
|
|
931 return true; |
|
|
932 } |
|
|
933 ptr = ptr->next (); |
|
|
934 } |
|
|
935 |
|
|
936 return false; |
|
|
937 } |
|
|
938 |
|
|
939 // Really only clear functions that can be reloaded. |
|
|
940 |
|
|
941 bool |
|
|
942 symbol_table::clear_function (const std::string& nm) |
|
|
943 { |
|
|
944 unsigned int index = hash (nm); |
|
|
945 |
|
|
946 symbol_record *ptr = table[index].next (); |
|
|
947 |
|
|
948 while (ptr) |
|
|
949 { |
|
|
950 if (ptr->name () == nm |
|
|
951 && (ptr->is_user_function () || ptr->is_dld_function ())) |
|
1
|
952 { |
|
195
|
953 ptr->clear (); |
|
3013
|
954 return true; |
|
1
|
955 } |
|
195
|
956 ptr = ptr->next (); |
|
1
|
957 } |
|
|
958 |
|
3013
|
959 return false; |
|
1
|
960 } |
|
|
961 |
|
4009
|
962 bool |
|
|
963 symbol_table::clear_variable_pattern (const std::string& pat) |
|
|
964 { |
|
|
965 bool retval = false; |
|
|
966 |
|
|
967 for (unsigned int i = 0; i < table_size; i++) |
|
|
968 { |
|
|
969 symbol_record *ptr = table[i].next (); |
|
|
970 |
|
|
971 while (ptr) |
|
|
972 { |
|
|
973 if (ptr->is_user_variable ()) |
|
|
974 { |
|
|
975 glob_match pattern (pat); |
|
|
976 |
|
|
977 if (pattern.match (ptr->name ())) |
|
|
978 { |
|
|
979 ptr->clear (); |
|
|
980 |
|
|
981 retval = true; |
|
|
982 } |
|
|
983 } |
|
|
984 |
|
|
985 ptr = ptr->next (); |
|
|
986 } |
|
|
987 } |
|
|
988 |
|
|
989 return retval; |
|
|
990 } |
|
|
991 |
|
|
992 bool |
|
|
993 symbol_table::clear_global_pattern (const std::string& pat) |
|
|
994 { |
|
|
995 bool retval = false; |
|
|
996 |
|
|
997 for (unsigned int i = 0; i < table_size; i++) |
|
|
998 { |
|
|
999 symbol_record *ptr = table[i].next (); |
|
|
1000 |
|
|
1001 while (ptr) |
|
|
1002 { |
|
|
1003 if (ptr->is_user_variable () && ptr->is_linked_to_global ()) |
|
|
1004 { |
|
|
1005 glob_match pattern (pat); |
|
|
1006 |
|
|
1007 if (pattern.match (ptr->name ())) |
|
|
1008 { |
|
|
1009 ptr->clear (); |
|
|
1010 |
|
|
1011 retval = true; |
|
|
1012 } |
|
|
1013 } |
|
|
1014 |
|
|
1015 ptr = ptr->next (); |
|
|
1016 } |
|
|
1017 } |
|
|
1018 |
|
|
1019 return retval; |
|
|
1020 } |
|
|
1021 |
|
|
1022 // Really only clear functions that can be reloaded. |
|
|
1023 |
|
|
1024 bool |
|
|
1025 symbol_table::clear_function_pattern (const std::string& pat) |
|
|
1026 { |
|
|
1027 bool retval = false; |
|
|
1028 |
|
|
1029 for (unsigned int i = 0; i < table_size; i++) |
|
|
1030 { |
|
|
1031 symbol_record *ptr = table[i].next (); |
|
|
1032 |
|
|
1033 while (ptr) |
|
|
1034 { |
|
|
1035 if (ptr->is_user_function () || ptr->is_dld_function ()) |
|
|
1036 { |
|
|
1037 glob_match pattern (pat); |
|
|
1038 |
|
|
1039 if (pattern.match (ptr->name ())) |
|
|
1040 { |
|
|
1041 ptr->clear (); |
|
|
1042 |
|
|
1043 retval = true; |
|
|
1044 } |
|
|
1045 } |
|
|
1046 |
|
|
1047 ptr = ptr->next (); |
|
|
1048 } |
|
|
1049 } |
|
|
1050 |
|
|
1051 return retval; |
|
|
1052 } |
|
|
1053 |
|
1
|
1054 int |
|
164
|
1055 symbol_table::size (void) const |
|
1
|
1056 { |
|
|
1057 int count = 0; |
|
3013
|
1058 |
|
|
1059 for (unsigned int i = 0; i < table_size; i++) |
|
1
|
1060 { |
|
|
1061 symbol_record *ptr = table[i].next (); |
|
3013
|
1062 |
|
530
|
1063 while (ptr) |
|
1
|
1064 { |
|
|
1065 count++; |
|
|
1066 ptr = ptr->next (); |
|
|
1067 } |
|
|
1068 } |
|
3013
|
1069 |
|
1
|
1070 return count; |
|
|
1071 } |
|
|
1072 |
|
3013
|
1073 static bool |
|
3523
|
1074 matches_patterns (const std::string& name, const string_vector& pats) |
|
1
|
1075 { |
|
3013
|
1076 int npats = pats.length (); |
|
1
|
1077 |
|
3013
|
1078 if (npats == 0) |
|
|
1079 return true; |
|
|
1080 |
|
|
1081 glob_match pattern (pats); |
|
|
1082 |
|
|
1083 return pattern.match (name); |
|
1
|
1084 } |
|
|
1085 |
|
3013
|
1086 Array<symbol_record *> |
|
4913
|
1087 symbol_table::subsymbol_list (const string_vector& pats, |
|
|
1088 unsigned int type, unsigned int scope) const |
|
|
1089 { |
|
|
1090 int count = 0; |
|
|
1091 |
|
|
1092 int n = size (); |
|
|
1093 |
|
|
1094 Array<symbol_record *> subsymbols (n); |
|
|
1095 int pats_length = pats.length (); |
|
|
1096 |
|
|
1097 if (n == 0) |
|
|
1098 return subsymbols; |
|
|
1099 |
|
|
1100 // Look for separators like .({ |
|
|
1101 for (int j = 0; j < pats_length; j++) |
|
|
1102 { |
|
|
1103 std::string var_name = pats (j); |
|
|
1104 |
|
|
1105 size_t pos = var_name.find_first_of (".({"); |
|
|
1106 |
|
|
1107 if ((pos != NPOS) && (pos > 0)) |
|
|
1108 { |
|
|
1109 std::string first_name = var_name.substr(0,pos); |
|
|
1110 |
|
|
1111 for (unsigned int i = 0; i < table_size; i++) |
|
|
1112 { |
|
|
1113 symbol_record *ptr = table[i].next (); |
|
|
1114 |
|
|
1115 while (ptr) |
|
|
1116 { |
|
|
1117 assert (count < n); |
|
|
1118 |
|
|
1119 unsigned int my_scope = ptr->is_linked_to_global () + 1; // Tricky... |
|
|
1120 |
|
|
1121 unsigned int my_type = ptr->type (); |
|
|
1122 |
|
|
1123 std::string my_name = ptr->name (); |
|
|
1124 |
|
|
1125 if ((type & my_type) && (scope & my_scope) && (first_name == my_name)) |
|
|
1126 { |
|
|
1127 symbol_record *sym_ptr = new symbol_record (); |
|
|
1128 octave_value value; |
|
|
1129 int parse_status; |
|
4914
|
1130 |
|
4913
|
1131 value = eval_string (var_name, true, parse_status); |
|
4914
|
1132 |
|
4913
|
1133 sym_ptr->define (value); |
|
|
1134 sym_ptr->rename (var_name); |
|
|
1135 subsymbols(count++) = sym_ptr; |
|
|
1136 } |
|
|
1137 |
|
|
1138 ptr = ptr->next (); |
|
|
1139 } |
|
|
1140 } |
|
|
1141 } |
|
|
1142 } |
|
|
1143 |
|
|
1144 subsymbols.resize (count); |
|
|
1145 |
|
|
1146 return subsymbols; |
|
|
1147 } |
|
|
1148 |
|
|
1149 Array<symbol_record *> |
|
3355
|
1150 symbol_table::symbol_list (const string_vector& pats, |
|
3013
|
1151 unsigned int type, unsigned int scope) const |
|
1
|
1152 { |
|
3355
|
1153 int count = 0; |
|
3013
|
1154 |
|
1
|
1155 int n = size (); |
|
3013
|
1156 |
|
3355
|
1157 Array<symbol_record *> symbols (n); |
|
|
1158 |
|
1
|
1159 if (n == 0) |
|
3355
|
1160 return symbols; |
|
3013
|
1161 |
|
|
1162 for (unsigned int i = 0; i < table_size; i++) |
|
1
|
1163 { |
|
|
1164 symbol_record *ptr = table[i].next (); |
|
3013
|
1165 |
|
530
|
1166 while (ptr) |
|
1
|
1167 { |
|
|
1168 assert (count < n); |
|
867
|
1169 |
|
2893
|
1170 unsigned int my_scope = ptr->is_linked_to_global () + 1; // Tricky... |
|
867
|
1171 |
|
2893
|
1172 unsigned int my_type = ptr->type (); |
|
867
|
1173 |
|
3523
|
1174 std::string my_name = ptr->name (); |
|
867
|
1175 |
|
4913
|
1176 if ((type & my_type) && (scope & my_scope) && (matches_patterns (my_name, pats))) |
|
3013
|
1177 symbols(count++) = ptr; |
|
605
|
1178 |
|
1
|
1179 ptr = ptr->next (); |
|
|
1180 } |
|
|
1181 } |
|
1755
|
1182 |
|
|
1183 symbols.resize (count); |
|
1
|
1184 |
|
3013
|
1185 return symbols; |
|
|
1186 } |
|
|
1187 |
|
|
1188 string_vector |
|
3355
|
1189 symbol_table::name_list (const string_vector& pats, bool sort, |
|
3013
|
1190 unsigned int type, unsigned int scope) const |
|
|
1191 { |
|
3355
|
1192 Array<symbol_record *> symbols = symbol_list (pats, type, scope); |
|
3013
|
1193 |
|
|
1194 string_vector names; |
|
|
1195 |
|
|
1196 int n = symbols.length (); |
|
|
1197 |
|
|
1198 if (n > 0) |
|
|
1199 { |
|
|
1200 names.resize (n); |
|
|
1201 |
|
|
1202 for (int i = 0; i < n; i++) |
|
|
1203 names[i] = symbols(i)->name (); |
|
|
1204 } |
|
|
1205 |
|
|
1206 if (sort) |
|
|
1207 names.qsort (); |
|
|
1208 |
|
|
1209 return names; |
|
|
1210 } |
|
|
1211 |
|
|
1212 static int |
|
3145
|
1213 maybe_list_cmp_fcn (const void *a_arg, const void *b_arg) |
|
3013
|
1214 { |
|
3145
|
1215 const symbol_record *a = *(X_CAST (const symbol_record **, a_arg)); |
|
|
1216 const symbol_record *b = *(X_CAST (const symbol_record **, b_arg)); |
|
3013
|
1217 |
|
3523
|
1218 std::string a_nm = a->name (); |
|
|
1219 std::string b_nm = b->name (); |
|
3145
|
1220 |
|
|
1221 return a_nm.compare (b_nm); |
|
3013
|
1222 } |
|
1
|
1223 |
|
4913
|
1224 void |
|
|
1225 symbol_table::print_descriptor (std::ostream& os, |
|
|
1226 std::list<whos_parameter> params) const |
|
|
1227 { |
|
|
1228 // This method prints a line of information on a given symbol |
|
|
1229 std::list<whos_parameter>::iterator i = params.begin (); |
|
|
1230 OSSTREAM param_buf; |
|
|
1231 |
|
|
1232 while (i != params.end ()) |
|
|
1233 { |
|
|
1234 whos_parameter param = * i; |
|
|
1235 |
|
|
1236 if (param.command != '\0') |
|
|
1237 { |
|
|
1238 // Do the actual printing |
|
|
1239 switch (param.modifier) |
|
|
1240 { |
|
|
1241 case 'l': |
|
|
1242 os << std::setiosflags (std::ios::left) << std::setw (param.parameter_length); |
|
|
1243 param_buf << std::setiosflags (std::ios::left) << std::setw (param.parameter_length); |
|
|
1244 break; |
|
|
1245 |
|
|
1246 case 'r': |
|
|
1247 os << std::setiosflags (std::ios::right) << std::setw (param.parameter_length); |
|
|
1248 param_buf << std::setiosflags (std::ios::right) << std::setw (param.parameter_length); |
|
|
1249 break; |
|
|
1250 |
|
|
1251 case 'c': |
|
4914
|
1252 if (param.command != 's') |
|
4913
|
1253 { |
|
|
1254 os << std::setiosflags (std::ios::left) |
|
|
1255 << std::setw (param.parameter_length); |
|
|
1256 param_buf << std::setiosflags (std::ios::left) |
|
|
1257 << std::setw (param.parameter_length); |
|
|
1258 } |
|
|
1259 break; |
|
|
1260 |
|
|
1261 default: |
|
|
1262 os << std::setiosflags (std::ios::left) << std::setw (param.parameter_length); |
|
|
1263 param_buf << std::setiosflags (std::ios::left) << std::setw (param.parameter_length); |
|
|
1264 } |
|
|
1265 |
|
|
1266 if (param.command == 's' && param.modifier == 'c') |
|
|
1267 { |
|
|
1268 int a, b; |
|
4914
|
1269 |
|
4913
|
1270 if (param.modifier == 'c') |
|
|
1271 { |
|
|
1272 a = param.first_parameter_length - param.balance; |
|
|
1273 a = (a < 0 ? 0 : a); |
|
|
1274 b = param.parameter_length - a - param.text . length (); |
|
|
1275 b = (b < 0 ? 0 : b); |
|
|
1276 os << std::setiosflags (std::ios::left) << std::setw (a) |
|
|
1277 << "" << std::resetiosflags (std::ios::left) << param.text |
|
|
1278 << std::setiosflags (std::ios::left) |
|
|
1279 << std::setw (b) << "" |
|
|
1280 << std::resetiosflags (std::ios::left); |
|
|
1281 param_buf << std::setiosflags (std::ios::left) << std::setw (a) |
|
|
1282 << "" << std::resetiosflags (std::ios::left) << param.line |
|
|
1283 << std::setiosflags (std::ios::left) |
|
|
1284 << std::setw (b) << "" |
|
|
1285 << std::resetiosflags (std::ios::left); |
|
|
1286 } |
|
|
1287 } |
|
|
1288 else |
|
|
1289 { |
|
|
1290 os << param.text; |
|
|
1291 param_buf << param.line; |
|
|
1292 } |
|
|
1293 os << std::resetiosflags (std::ios::left) |
|
|
1294 << std::resetiosflags (std::ios::right); |
|
|
1295 param_buf << std::resetiosflags (std::ios::left) |
|
|
1296 << std::resetiosflags (std::ios::right); |
|
|
1297 i++; |
|
|
1298 } |
|
|
1299 else |
|
|
1300 { |
|
|
1301 os << param.text; |
|
|
1302 param_buf << param.line; |
|
|
1303 i++; |
|
|
1304 } |
|
|
1305 } |
|
|
1306 |
|
|
1307 param_buf << OSSTREAM_ENDS; |
|
|
1308 os << OSSTREAM_C_STR (param_buf); |
|
|
1309 OSSTREAM_FREEZE (param_buf); |
|
|
1310 } |
|
|
1311 |
|
|
1312 std::list<whos_parameter> |
|
|
1313 symbol_table::parse_whos_line_format (Array<symbol_record *>& symbols) const |
|
|
1314 { |
|
|
1315 // This method parses the string whos_line_format, and returns |
|
|
1316 // a parameter list, containing all information needed to print |
|
|
1317 // the given attributtes of the symbols |
|
|
1318 int idx; |
|
|
1319 size_t format_len = Vwhos_line_format.length (); |
|
|
1320 char garbage; |
|
|
1321 std::list<whos_parameter> params; |
|
|
1322 |
|
|
1323 size_t bytes1; |
|
|
1324 int elements1; |
|
|
1325 |
|
|
1326 int len = symbols.length (), i; |
|
|
1327 |
|
|
1328 std::string param_string = "benpst"; |
|
|
1329 Array<int> param_length(param_string.length ()); |
|
|
1330 Array<std::string> param_names(param_string.length ()); |
|
|
1331 size_t pos_b, pos_t, pos_e, pos_n, pos_p, pos_s; |
|
|
1332 |
|
|
1333 pos_b = param_string.find ('b'); // Bytes |
|
|
1334 pos_t = param_string.find ('t'); // (Type aka) Class |
|
|
1335 pos_e = param_string.find ('e'); // Elements |
|
|
1336 pos_n = param_string.find ('n'); // Name |
|
|
1337 pos_p = param_string.find ('p'); // Protected |
|
|
1338 pos_s = param_string.find ('s'); // Size |
|
|
1339 |
|
|
1340 param_names(pos_b) = "Bytes"; |
|
|
1341 param_names(pos_t) = "Class"; |
|
|
1342 param_names(pos_e) = "Elements"; |
|
|
1343 param_names(pos_n) = "Name"; |
|
|
1344 param_names(pos_p) = "Prot"; |
|
|
1345 param_names(pos_s) = "Size"; |
|
|
1346 |
|
|
1347 for (i = 0; i < 6; i++) |
|
|
1348 param_length(i) = param_names(i) . length (); |
|
|
1349 |
|
|
1350 // Calculating necessary spacing for name column, |
|
|
1351 // bytes column, elements column and class column |
|
|
1352 for (i = 0; i < static_cast<int> (len); i++) |
|
|
1353 { |
|
|
1354 std::stringstream ss1, ss2; |
|
|
1355 std::string str; |
|
|
1356 |
|
|
1357 str = symbols(i)->name (); |
|
|
1358 param_length(pos_n) = ((str.length () > static_cast<size_t> (param_length(pos_n))) ? |
|
|
1359 str.length () : param_length(pos_n)); |
|
|
1360 |
|
|
1361 str = symbols(i)->type_name (); |
|
|
1362 param_length(pos_t) = ((str.length () > static_cast<size_t> (param_length(pos_t))) ? |
|
|
1363 str.length () : param_length(pos_t)); |
|
|
1364 |
|
|
1365 elements1 = symbols(i)->numel (); |
|
|
1366 ss1 << elements1; |
|
|
1367 str = ss1.str (); |
|
|
1368 param_length(pos_e) = ((str.length () > static_cast<size_t> (param_length(pos_e))) ? |
|
|
1369 str.length () : param_length(pos_e)); |
|
|
1370 |
|
|
1371 bytes1 = symbols(i)->byte_size (); |
|
|
1372 ss2 << bytes1; |
|
|
1373 str = ss2.str (); |
|
|
1374 param_length(pos_b) = ((str.length () > static_cast<size_t> (param_length(pos_b))) ? |
|
|
1375 str.length () : param_length (pos_b)); |
|
|
1376 } |
|
|
1377 |
|
|
1378 idx = 0; |
|
|
1379 while (static_cast<size_t> (idx) < format_len) |
|
|
1380 { |
|
|
1381 whos_parameter param; |
|
|
1382 param.command = '\0'; |
|
|
1383 |
|
|
1384 if (Vwhos_line_format[idx] == '%') |
|
4914
|
1385 { |
|
|
1386 bool error_encountered = false; |
|
4913
|
1387 param.modifier = 'r'; |
|
|
1388 param.parameter_length = 0; |
|
|
1389 param.dimensions = 8; |
|
|
1390 |
|
|
1391 int a = 0, b = -1, c = 8, balance = 1; |
|
|
1392 unsigned int items; |
|
|
1393 size_t pos; |
|
|
1394 std::string cmd; |
|
|
1395 |
|
|
1396 // Parse one command from whos_line_format |
|
|
1397 cmd = Vwhos_line_format.substr (idx, Vwhos_line_format.length ()); |
|
|
1398 pos = cmd.find (';'); |
|
|
1399 if (pos != NPOS) |
|
|
1400 cmd = cmd.substr (0, pos+1); |
|
|
1401 else |
|
|
1402 error ("parameter without ; in whos_line_format"); |
|
|
1403 |
|
|
1404 idx += cmd.length (); |
|
4914
|
1405 |
|
|
1406 // XXX FIXME XXX -- use iostream functions instead of sscanf! |
|
|
1407 |
|
4913
|
1408 if (cmd.find_first_of ("crl") != 1) |
|
|
1409 items = sscanf (cmd.c_str (), "%c%c:%d:%d:%d:%d;", |
|
|
1410 &garbage, ¶m.command, &a, &b, &c, &balance); |
|
|
1411 else |
|
|
1412 items = sscanf (cmd.c_str (), "%c%c%c:%d:%d:%d:%d;", |
|
4914
|
1413 &garbage, ¶m.modifier, ¶m.command, |
|
|
1414 &a, &b, &c, &balance) - 1; |
|
|
1415 |
|
4913
|
1416 if (items < 2) |
|
|
1417 { |
|
|
1418 error ("whos_line_format: parameter structure without command in whos_line_format"); |
|
4914
|
1419 error_encountered = true; |
|
4913
|
1420 } |
|
|
1421 |
|
|
1422 // Insert data into parameter |
|
|
1423 param.first_parameter_length = 0; |
|
|
1424 pos = param_string.find (param.command); |
|
|
1425 if (pos != NPOS) |
|
|
1426 { |
|
|
1427 param.parameter_length = param_length(pos); |
|
|
1428 param.text = param_names(pos); |
|
|
1429 param.line.assign (param_names (pos).length (), '='); |
|
|
1430 } |
|
|
1431 else |
|
|
1432 { |
|
|
1433 error ("whos_line_format: '%c' is not a command", |
|
|
1434 param.command); |
|
4914
|
1435 error_encountered = true; |
|
4913
|
1436 } |
|
|
1437 |
|
|
1438 if (param.command == 's') |
|
|
1439 { |
|
|
1440 // Have to calculate space needed for printing matrix dimensions |
|
|
1441 // Space needed for Size column is hard to determine in prior, |
|
|
1442 // because it depends on dimensions to be shown. That is why it is |
|
|
1443 // recalculated for each Size-command |
|
|
1444 int j, first = 0, rest = 0, total = 0; |
|
|
1445 param.dimensions = c; |
|
4914
|
1446 |
|
4913
|
1447 for (j = 0; j < len; j++) |
|
|
1448 { |
|
|
1449 int first1 = symbols(j)->dimensions_string_req_first_space (param.dimensions); |
|
|
1450 int total1 = symbols(j)->dimensions_string_req_total_space (param.dimensions); |
|
|
1451 int rest1 = total1 - first1; |
|
|
1452 rest = (rest1 > rest ? rest1 : rest); |
|
|
1453 first = (first1 > first ? first1 : first); |
|
|
1454 total = (total1 > total ? total1 : total); |
|
|
1455 } |
|
|
1456 |
|
|
1457 if (param.modifier == 'c') |
|
|
1458 { |
|
|
1459 if (first < balance) |
|
|
1460 first += balance - first; |
|
|
1461 if (rest + balance < param.parameter_length) |
|
|
1462 rest += param.parameter_length - rest - balance; |
|
|
1463 |
|
|
1464 param.parameter_length = first + rest; |
|
|
1465 param.first_parameter_length = first; |
|
|
1466 param.balance = balance; |
|
|
1467 } |
|
|
1468 else |
|
|
1469 { |
|
|
1470 param.parameter_length = total; |
|
|
1471 param.first_parameter_length = 0; |
|
|
1472 } |
|
|
1473 } |
|
|
1474 else if (param.modifier == 'c') |
|
|
1475 { |
|
|
1476 error ("whos_line_format: modifier 'c' not available for command '%c'", |
|
|
1477 param.command); |
|
4914
|
1478 error_encountered = true; |
|
4913
|
1479 } |
|
|
1480 |
|
|
1481 // What happens if whos_line_format contains negative numbers |
|
|
1482 // at param_length positions? |
|
|
1483 param.balance = ((b < 0) ? 0 : param.balance); |
|
|
1484 param.first_parameter_length = ((b < 0) ? 0 : |
|
|
1485 param.first_parameter_length); |
|
|
1486 param.parameter_length = ((a < 0) ? 0 : |
|
|
1487 (param.parameter_length < |
|
4914
|
1488 param_length (pos_s)) ? |
|
4913
|
1489 param_length (pos_s) : |
|
|
1490 param.parameter_length); |
|
|
1491 |
|
|
1492 // Parameter will not be pushed into parameter list if ... |
|
4914
|
1493 if (! error_encountered) |
|
4913
|
1494 params.push_back (param); |
|
|
1495 } |
|
|
1496 else |
|
|
1497 { |
|
|
1498 // Text string, to be printed as it is ... |
|
|
1499 std::string text; |
|
|
1500 size_t pos; |
|
|
1501 text = Vwhos_line_format.substr (idx, Vwhos_line_format.length ()); |
|
|
1502 pos = text.find ('%'); |
|
|
1503 if (pos != NPOS) |
|
|
1504 text = text.substr (0, pos); |
|
|
1505 |
|
|
1506 // Push parameter into list ... |
|
|
1507 idx += text.length (); |
|
|
1508 param.text=text; |
|
|
1509 param.line.assign (text.length(), ' '); |
|
|
1510 params.push_back (param); |
|
|
1511 } |
|
|
1512 } |
|
|
1513 |
|
|
1514 return params; |
|
|
1515 } |
|
|
1516 |
|
3013
|
1517 int |
|
|
1518 symbol_table::maybe_list (const char *header, const string_vector& argv, |
|
3523
|
1519 std::ostream& os, bool show_verbose, |
|
3013
|
1520 unsigned type, unsigned scope) |
|
|
1521 { |
|
4914
|
1522 // This method prints information for sets of symbols, but only one |
|
|
1523 // set at a time (like, for instance: all variables, or all |
|
|
1524 // built-in-functions). |
|
4913
|
1525 |
|
4914
|
1526 // This method invokes print_symbol_info_line to print info on every |
|
|
1527 // symbol. |
|
4913
|
1528 |
|
3013
|
1529 int status = 0; |
|
|
1530 |
|
|
1531 if (show_verbose) |
|
|
1532 { |
|
4914
|
1533 // XXX FIXME XXX Should separate argv to lists with and without dots. |
|
|
1534 Array<symbol_record *> xsymbols = symbol_list (argv, type, scope); |
|
|
1535 Array<symbol_record *> xsubsymbols = subsymbol_list (argv, type, scope); |
|
3013
|
1536 |
|
4914
|
1537 int sym_len = xsymbols.length (), subsym_len = xsubsymbols.length (), |
|
4913
|
1538 len = sym_len + subsym_len; |
|
4914
|
1539 |
|
4913
|
1540 Array<symbol_record *> symbols (len); |
|
3013
|
1541 |
|
3355
|
1542 if (len > 0) |
|
3013
|
1543 { |
|
5005
|
1544 size_t bytes = 0; |
|
|
1545 size_t elements = 0; |
|
|
1546 |
|
|
1547 int i; |
|
|
1548 |
|
4913
|
1549 std::list<whos_parameter> params; |
|
|
1550 |
|
4914
|
1551 // Joining symbolic tables. |
|
4913
|
1552 for (i = 0; i < sym_len; i++) |
|
4914
|
1553 symbols(i) = xsymbols(i); |
|
4913
|
1554 |
|
|
1555 for (i = 0; i < subsym_len; i++) |
|
4914
|
1556 symbols(i+sym_len) = xsubsymbols(i); |
|
4913
|
1557 |
|
|
1558 os << "\n" << header << "\n\n"; |
|
3013
|
1559 |
|
|
1560 symbols.qsort (maybe_list_cmp_fcn); |
|
|
1561 |
|
4913
|
1562 params = parse_whos_line_format (symbols); |
|
|
1563 |
|
|
1564 print_descriptor (os, params); |
|
|
1565 |
|
|
1566 os << "\n"; |
|
|
1567 |
|
|
1568 for (int j = 0; j < len; j++) |
|
|
1569 { |
|
|
1570 symbols(j)->print_symbol_info_line (os, params); |
|
|
1571 elements += symbols(j)->numel (); |
|
|
1572 bytes += symbols(j)->byte_size (); |
|
|
1573 } |
|
|
1574 |
|
5005
|
1575 os << "\nTotal is " |
|
5006
|
1576 << elements << (elements == 1 ? " element" : " elements") |
|
5005
|
1577 << " using " |
|
5006
|
1578 << bytes << (bytes == 1 ? " byte" : " bytes") |
|
5005
|
1579 << "\n"; |
|
3013
|
1580 |
|
|
1581 status = 1; |
|
|
1582 } |
|
|
1583 } |
|
|
1584 else |
|
|
1585 { |
|
3355
|
1586 string_vector symbols = name_list (argv, 1, type, scope); |
|
3013
|
1587 |
|
3355
|
1588 if (! symbols.empty ()) |
|
4914
|
1589 { |
|
3013
|
1590 os << "\n" << header << "\n\n"; |
|
|
1591 |
|
|
1592 symbols.list_in_columns (os); |
|
|
1593 |
|
|
1594 status = 1; |
|
|
1595 } |
|
|
1596 } |
|
|
1597 |
|
|
1598 return status; |
|
1
|
1599 } |
|
|
1600 |
|
3355
|
1601 Array<symbol_record *> |
|
3523
|
1602 symbol_table::glob (const std::string& pat, unsigned int type, |
|
2893
|
1603 unsigned int scope) const |
|
605
|
1604 { |
|
3355
|
1605 int count = 0; |
|
|
1606 |
|
605
|
1607 int n = size (); |
|
3355
|
1608 |
|
|
1609 Array<symbol_record *> symbols (n); |
|
|
1610 |
|
605
|
1611 if (n == 0) |
|
3355
|
1612 return symbols; |
|
3013
|
1613 |
|
|
1614 for (unsigned int i = 0; i < table_size; i++) |
|
605
|
1615 { |
|
|
1616 symbol_record *ptr = table[i].next (); |
|
3013
|
1617 |
|
605
|
1618 while (ptr) |
|
|
1619 { |
|
|
1620 assert (count < n); |
|
|
1621 |
|
2893
|
1622 unsigned int my_scope = ptr->is_linked_to_global () + 1; // Tricky... |
|
605
|
1623 |
|
2893
|
1624 unsigned int my_type = ptr->type (); |
|
605
|
1625 |
|
1792
|
1626 glob_match pattern (pat); |
|
1755
|
1627 |
|
605
|
1628 if ((type & my_type) && (scope & my_scope) |
|
1792
|
1629 && pattern.match (ptr->name ())) |
|
605
|
1630 { |
|
3355
|
1631 symbols(count++) = ptr; |
|
605
|
1632 } |
|
|
1633 |
|
|
1634 ptr = ptr->next (); |
|
|
1635 } |
|
|
1636 } |
|
3355
|
1637 |
|
|
1638 symbols.resize (count); |
|
605
|
1639 |
|
|
1640 return symbols; |
|
|
1641 } |
|
|
1642 |
|
220
|
1643 void |
|
|
1644 symbol_table::push_context (void) |
|
|
1645 { |
|
3013
|
1646 for (unsigned int i = 0; i < table_size; i++) |
|
220
|
1647 { |
|
|
1648 symbol_record *ptr = table[i].next (); |
|
|
1649 |
|
530
|
1650 while (ptr) |
|
220
|
1651 { |
|
|
1652 ptr->push_context (); |
|
|
1653 ptr = ptr->next (); |
|
|
1654 } |
|
|
1655 } |
|
|
1656 } |
|
|
1657 |
|
|
1658 void |
|
|
1659 symbol_table::pop_context (void) |
|
|
1660 { |
|
3013
|
1661 for (unsigned int i = 0; i < table_size; i++) |
|
220
|
1662 { |
|
|
1663 symbol_record *ptr = table[i].next (); |
|
|
1664 |
|
530
|
1665 while (ptr) |
|
220
|
1666 { |
|
|
1667 ptr->pop_context (); |
|
|
1668 ptr = ptr->next (); |
|
|
1669 } |
|
|
1670 } |
|
|
1671 } |
|
|
1672 |
|
3013
|
1673 void |
|
3944
|
1674 symbol_table::print_info (std::ostream& os) const |
|
3013
|
1675 { |
|
|
1676 int count = 0; |
|
|
1677 int empty_chains = 0; |
|
|
1678 int max_chain_length = 0; |
|
|
1679 int min_chain_length = INT_MAX; |
|
|
1680 |
|
|
1681 for (unsigned int i = 0; i < table_size; i++) |
|
|
1682 { |
|
|
1683 int num_this_chain = 0; |
|
|
1684 |
|
|
1685 symbol_record *ptr = table[i].next (); |
|
|
1686 |
|
|
1687 if (ptr) |
|
3933
|
1688 os << "chain number " << i << ":\n"; |
|
3013
|
1689 else |
|
|
1690 { |
|
|
1691 empty_chains++; |
|
|
1692 min_chain_length = 0; |
|
|
1693 } |
|
|
1694 |
|
|
1695 while (ptr) |
|
|
1696 { |
|
|
1697 num_this_chain++; |
|
|
1698 |
|
3933
|
1699 os << " " << ptr->name () << "\n"; |
|
|
1700 |
|
|
1701 ptr->print_info (os, " "); |
|
3013
|
1702 |
|
|
1703 ptr = ptr->next (); |
|
|
1704 } |
|
|
1705 |
|
|
1706 count += num_this_chain; |
|
|
1707 |
|
|
1708 if (num_this_chain > max_chain_length) |
|
|
1709 max_chain_length = num_this_chain; |
|
|
1710 |
|
|
1711 if (num_this_chain < min_chain_length) |
|
|
1712 min_chain_length = num_this_chain; |
|
|
1713 |
|
|
1714 if (num_this_chain > 0) |
|
3933
|
1715 os << "\n"; |
|
3013
|
1716 } |
|
|
1717 |
|
3933
|
1718 os << "max chain length: " << max_chain_length << "\n"; |
|
|
1719 os << "min chain length: " << min_chain_length << "\n"; |
|
|
1720 os << "empty chains: " << empty_chains << "\n"; |
|
|
1721 os << "total chains: " << table_size << "\n"; |
|
|
1722 os << "total symbols: " << count << "\n"; |
|
3013
|
1723 } |
|
|
1724 |
|
1
|
1725 // Chris Torek's fave hash function. |
|
|
1726 |
|
|
1727 unsigned int |
|
3523
|
1728 symbol_table::hash (const std::string& str) |
|
1
|
1729 { |
|
2893
|
1730 unsigned int h = 0; |
|
3013
|
1731 |
|
2893
|
1732 for (unsigned int i = 0; i < str.length (); i++) |
|
1755
|
1733 h = h * 33 + str[i]; |
|
1
|
1734 |
|
3013
|
1735 return h & (table_size - 1); |
|
2790
|
1736 } |
|
|
1737 |
|
3308
|
1738 |
|
|
1739 static int |
|
|
1740 variables_can_hide_functions (void) |
|
|
1741 { |
|
|
1742 Vvariables_can_hide_functions |
|
|
1743 = check_preference ("variables_can_hide_functions"); |
|
|
1744 |
|
|
1745 return 0; |
|
|
1746 } |
|
|
1747 |
|
4238
|
1748 static int |
|
|
1749 debug_symtab_lookups (void) |
|
|
1750 { |
|
|
1751 Vdebug_symtab_lookups = check_preference ("debug_symtab_lookups"); |
|
|
1752 |
|
|
1753 return 0; |
|
|
1754 } |
|
|
1755 |
|
4913
|
1756 static int |
|
|
1757 whos_line_format (void) |
|
|
1758 { |
|
|
1759 Vwhos_line_format = builtin_string_variable ("whos_line_format"); |
|
|
1760 |
|
|
1761 return 0; |
|
|
1762 } |
|
|
1763 |
|
3308
|
1764 void |
|
|
1765 symbols_of_symtab (void) |
|
|
1766 { |
|
4233
|
1767 DEFVAR (variables_can_hide_functions, true, variables_can_hide_functions, |
|
3448
|
1768 "-*- texinfo -*-\n\ |
|
5016
|
1769 @defvr {Built-in Variable} variables_can_hide_functions\n\ |
|
3448
|
1770 If the value of this variable is nonzero, assignments to variables may\n\ |
|
|
1771 hide previously defined functions of the same name. A negative value\n\ |
|
|
1772 will cause Octave to print a warning, but allow the operation.\n\ |
|
|
1773 @end defvr"); |
|
|
1774 |
|
4238
|
1775 DEFVAR (debug_symtab_lookups, false, debug_symtab_lookups, |
|
|
1776 "-*- texinfo -*-\n\ |
|
|
1777 @defvr debug_symtab_lookups\n\ |
|
4913
|
1778 If the value of this variable is nonzero, print debugging info when\n\ |
|
4911
|
1779 searching for symbols in the symbol tables.\n\ |
|
|
1780 @end defvr"); |
|
4913
|
1781 |
|
|
1782 DEFVAR (whos_line_format, " %p:4; %ln:6; %cs:16:6:8:1; %rb:12; %lt:-1;\n", whos_line_format, |
|
|
1783 "-*- texinfo -*-\n\ |
|
|
1784 @defvr {Built-in Variable} whos_line_format\n\ |
|
|
1785 This string decides in what order attributtes of variables are to be printed.\n\ |
|
|
1786 The following commands are used:\n\ |
|
|
1787 @table @code\n\ |
|
|
1788 @item %b\n\ |
|
|
1789 Prints number of bytes occupied by variables.\n\ |
|
|
1790 @item %e\n\ |
|
|
1791 Prints elements held by variables.\n\ |
|
|
1792 @item %n\n\ |
|
|
1793 Prints variable names.\n\ |
|
|
1794 @item %p\n\ |
|
|
1795 Prints protection attributtes of variables.\n\ |
|
|
1796 @item %s\n\ |
|
|
1797 Prints dimensions of variables.\n\ |
|
|
1798 @item %t\n\ |
|
|
1799 Prints type names of variables.\n\ |
|
|
1800 @end table\n\ |
|
|
1801 \n\ |
|
|
1802 Every command may also have a modifier:\n\ |
|
|
1803 @table @code\n\ |
|
|
1804 @item l\n\ |
|
|
1805 Left alignment.\n\ |
|
|
1806 @item r\n\ |
|
|
1807 Right alignment (this is the default).\n\ |
|
|
1808 @item c\n\ |
|
|
1809 Centered (may only be applied to command %s).\n\ |
|
|
1810 @end table\n\ |
|
|
1811 \n\ |
|
|
1812 A command is composed like this:\n\ |
|
|
1813 %[modifier]<command>[:size_of_parameter[:center-specific[:print_dims[:balance]]]];\n\ |
|
|
1814 \n\ |
|
|
1815 Command and modifier is already explained. Size_of_parameter\n\ |
|
|
1816 tells how many columns the parameter will need for printing.\n\ |
|
|
1817 print_dims tells how many dimensions to print. If number of\n\ |
|
|
1818 dimensions exceeds print_dims, dimensions will be printed like\n\ |
|
|
1819 x-D.\n\ |
|
|
1820 center-specific and print_dims may only be applied to command\n\ |
|
|
1821 %s. A negative value for print_dims will cause Octave to print all\n\ |
|
|
1822 dimensions whatsoever.\n\ |
|
|
1823 balance specifies the offset for printing of the dimensions string.\n\ |
|
|
1824 \n\ |
|
|
1825 Default format is \" %p:4; %ln:6; %cs:16:6:8:1; %rb:12; %lt:-1;\\n\".\n\ |
|
|
1826 @end defvr\n"); |
|
3308
|
1827 } |
|
|
1828 |
|
1
|
1829 /* |
|
|
1830 ;;; Local Variables: *** |
|
|
1831 ;;; mode: C++ *** |
|
|
1832 ;;; End: *** |
|
|
1833 */ |
