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1 /* |
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2 |
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3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
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4 2002, 2003, 2004, 2005, 2006, 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "oct-env.h" |
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29 #include "oct-time.h" |
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30 #include "file-ops.h" |
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31 #include "file-stat.h" |
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32 |
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33 #include "defun.h" |
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34 #include "dirfns.h" |
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35 #include "input.h" |
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36 #include "load-path.h" |
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37 #include "symtab.h" |
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38 #include "ov-fcn.h" |
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39 #include "pager.h" |
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40 #include "parse.h" |
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41 #include "pt-arg-list.h" |
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42 #include "toplev.h" |
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43 #include "unwind-prot.h" |
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44 #include "utils.h" |
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45 |
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46 symbol_table *symbol_table::instance = 0; |
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47 |
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48 std::map<symbol_table::scope_id, symbol_table*> symbol_table::all_instances; |
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49 |
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50 std::map<std::string, symbol_table::fcn_info> symbol_table::fcn_table; |
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51 |
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52 const symbol_table::scope_id symbol_table::xglobal_scope = 0; |
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53 const symbol_table::scope_id symbol_table::xtop_scope = 1; |
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54 |
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55 symbol_table::scope_id symbol_table::xcurrent_scope = 1; |
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56 symbol_table::scope_id symbol_table::xcurrent_caller_scope = -1; |
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57 |
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58 symbol_table::scope_id symbol_table::xparent_scope = -1; |
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59 |
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60 std::deque<symbol_table::scope_id> symbol_table::scope_stack; |
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61 |
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62 symbol_table::scope_id symbol_table::next_available_scope = 2; |
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63 std::set<symbol_table::scope_id> symbol_table::scope_ids_in_use; |
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64 std::set<symbol_table::scope_id> symbol_table::scope_ids_free_list; |
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65 |
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66 // Should Octave always check to see if function files have changed |
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67 // since they were last compiled? |
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68 static int Vignore_function_time_stamp = 1; |
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69 |
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70 octave_value |
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71 symbol_table::symbol_record::find (tree_argument_list *args, |
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72 const string_vector& arg_names, |
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73 octave_value_list& evaluated_args, |
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74 bool& args_evaluated) const |
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75 { |
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76 octave_value retval; |
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77 |
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78 if (is_global ()) |
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79 return symbol_table::varref (name (), symbol_table::xglobal_scope); |
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80 else |
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81 { |
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82 octave_value val = varval (); |
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83 |
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84 if (val.is_defined ()) |
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85 return val; |
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86 } |
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87 |
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88 return symbol_table::find_function (name (), args, arg_names, |
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89 evaluated_args, args_evaluated); |
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90 } |
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91 |
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92 // Check the load path to see if file that defined this is still |
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93 // visible. If the file is no longer visible, then erase the |
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94 // definition and move on. If the file is visible, then we also |
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95 // need to check to see whether the file has changed since the the |
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96 // function was loaded/parsed. However, this check should only |
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97 // happen once per prompt (for files found from relative path |
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98 // elements, we also check if the working directory has changed |
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99 // since the last time the function was loaded/parsed). |
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100 // |
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101 // FIXME -- perhaps this should be done for all loaded functions when |
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102 // the prompt is printed or the directory has changed, and then we |
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103 // would not check for it when finding symbol definitions. |
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104 |
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105 static inline bool |
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106 out_of_date_check_internal (octave_value& function) |
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107 { |
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108 bool retval = false; |
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109 |
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110 octave_function *fcn = function.function_value (true); |
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111 |
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112 if (fcn) |
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113 { |
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114 // FIXME -- we need to handle nested functions properly here. |
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115 |
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116 if (! fcn->is_nested_function ()) |
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117 { |
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118 std::string ff = fcn->fcn_file_name (); |
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119 |
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120 if (! ff.empty ()) |
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121 { |
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122 octave_time tc = fcn->time_checked (); |
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123 |
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124 bool relative = fcn->is_relative (); |
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125 |
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126 if (tc < Vlast_prompt_time |
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127 || (relative && tc < Vlast_chdir_time)) |
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128 { |
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129 octave_time ottp = fcn->time_parsed (); |
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130 time_t tp = ottp.unix_time (); |
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131 |
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132 std::string nm = fcn->name (); |
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133 |
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134 int nm_len = nm.length (); |
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135 |
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136 std::string file; |
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137 std::string dir_name; |
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138 |
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139 if (octave_env::absolute_pathname (nm) |
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140 && ((nm_len > 4 && (nm.substr (nm_len-4) == ".oct" |
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141 || nm.substr (nm_len-4) == ".mex")) |
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142 || (nm_len > 2 && nm.substr (nm_len-4) == ".m"))) |
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143 file = nm; |
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144 else |
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145 // FIXME -- this lookup is not right since it doesn't |
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146 // account for dispatch type. |
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147 file = octave_env::make_absolute (load_path::find_fcn (nm, dir_name), |
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148 octave_env::getcwd ()); |
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149 |
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150 if (file.empty ()) |
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151 { |
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152 // Can't see this function from current |
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153 // directory, so we should clear it. |
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154 |
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155 function = octave_value (); |
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156 } |
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157 else if (same_file (file, ff)) |
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158 { |
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159 fcn->mark_fcn_file_up_to_date (octave_time ()); |
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160 |
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161 if (! (Vignore_function_time_stamp == 2 |
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162 || (Vignore_function_time_stamp |
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163 && fcn->is_system_fcn_file ()))) |
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164 { |
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165 file_stat fs (ff); |
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166 |
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167 if (fs) |
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168 { |
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169 if (fs.is_newer (tp)) |
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170 { |
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171 fcn = load_fcn_from_file (ff, dir_name); |
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172 |
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173 if (fcn) |
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174 { |
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175 retval = true; |
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176 |
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177 function = octave_value (fcn); |
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178 } |
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179 else |
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180 function = octave_value (); |
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181 } |
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182 } |
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183 else |
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184 function = octave_value (); |
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185 } |
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186 } |
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187 } |
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188 } |
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189 } |
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190 } |
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191 |
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192 return retval; |
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193 } |
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194 |
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195 bool |
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196 out_of_date_check (octave_value& function) |
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197 { |
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198 return out_of_date_check_internal (function); |
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199 } |
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200 |
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201 octave_value |
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202 symbol_table::fcn_info::fcn_info_rep::load_private_function |
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203 (const std::string& dir_name) |
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204 { |
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205 octave_value retval; |
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206 |
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207 std::string file_name = load_path::find_private_fcn (dir_name, name); |
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208 |
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209 if (! file_name.empty ()) |
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210 { |
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211 octave_function *fcn = load_fcn_from_file (file_name); |
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212 |
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213 if (fcn) |
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214 { |
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215 retval = octave_value (fcn); |
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216 |
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217 private_functions[dir_name] = retval; |
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218 } |
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219 } |
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220 |
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221 return retval; |
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222 } |
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223 |
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224 octave_value |
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225 symbol_table::fcn_info::fcn_info_rep::load_class_constructor (void) |
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226 { |
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227 octave_value retval; |
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228 |
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229 std::string dir_name; |
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230 |
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231 std::string file_name = load_path::find_method (name, name, dir_name); |
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232 |
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233 if (! file_name.empty ()) |
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234 { |
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235 octave_function *fcn = load_fcn_from_file (file_name, dir_name, name); |
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236 |
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237 if (fcn) |
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238 { |
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239 retval = octave_value (fcn); |
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240 |
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241 class_constructors[name] = retval; |
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242 } |
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243 } |
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244 |
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245 return retval; |
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246 } |
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247 |
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248 octave_value |
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249 symbol_table::fcn_info::fcn_info_rep::load_class_method |
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250 (const std::string& dispatch_type) |
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251 { |
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252 octave_value retval; |
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253 |
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254 std::string dir_name; |
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255 |
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256 std::string file_name = load_path::find_method (dispatch_type, name, dir_name); |
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257 |
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258 if (! file_name.empty ()) |
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259 { |
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260 octave_function *fcn = load_fcn_from_file (file_name, dir_name, |
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261 dispatch_type); |
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262 |
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263 if (fcn) |
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264 { |
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265 retval = octave_value (fcn); |
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266 |
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267 class_methods[dispatch_type] = retval; |
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268 } |
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269 } |
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270 |
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271 return retval; |
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272 } |
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273 |
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274 void |
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275 symbol_table::fcn_info::fcn_info_rep::print_dispatch (std::ostream& os) const |
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276 { |
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277 if (dispatch_map.empty ()) |
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278 os << "dispatch: " << name << " is not overloaded" << std::endl; |
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279 else |
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280 { |
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281 os << "Overloaded function " << name << ":\n\n"; |
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282 |
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283 for (const_dispatch_map_iterator p = dispatch_map.begin (); |
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284 p != dispatch_map.end (); p++) |
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285 os << " " << name << " (" << p->first << ", ...) -> " |
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286 << p->second << " (" << p->first << ", ...)\n"; |
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287 |
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288 os << std::endl; |
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289 } |
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290 } |
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291 |
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292 std::string |
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293 symbol_table::fcn_info::fcn_info_rep::help_for_dispatch (void) const |
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294 { |
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295 std::string retval; |
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296 |
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297 if (! dispatch_map.empty ()) |
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298 { |
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299 retval = "Overloaded function:\n\n"; |
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300 |
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301 for (const_dispatch_map_iterator p = dispatch_map.begin (); |
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302 p != dispatch_map.end (); p++) |
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303 retval += " " + p->second + " (" + p->first + ", ...)\n\n"; |
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304 } |
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305 |
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306 return retval; |
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307 } |
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308 |
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309 // Find the definition of NAME according to the following precedence |
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310 // list: |
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311 // |
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312 // variable |
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313 // subfunction |
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314 // private function |
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315 // class constructor |
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316 // class method |
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317 // legacy dispatch |
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318 // command-line function |
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319 // autoload function |
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320 // function on the path |
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321 // built-in function |
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322 |
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323 // Notes: |
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324 // |
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325 // FIXME -- we need to evaluate the argument list to determine the |
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326 // dispatch type. The method used here works (pass in the args, pass |
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327 // out the evaluated args and a flag saying whether the evaluation was |
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328 // needed), but it seems a bit inelegant. We do need to save the |
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329 // evaluated args in some way to avoid evaluating them multiple times. |
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330 // Maybe evaluated args could be attached to the tree_argument_list |
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331 // object? Then the argument list could be evaluated outside of this |
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332 // function and we could elimnate the arg_names, evaluated_args, and |
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333 // args_evaluated arguments. We would still want to avoid computing |
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334 // the dispatch type unless it is needed, so the args should be passed |
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335 // rather than the dispatch type. But the arguments will need to be |
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336 // evaluated no matter what, so evaluating them beforehand should be |
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337 // OK. If the evaluated arguments are attached to args, then we would |
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338 // need to determine the appropriate place(s) to clear them (for |
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339 // example, before returning from tree_index_expression::rvalue). |
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340 |
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341 octave_value |
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342 symbol_table::fcn_info::fcn_info_rep::find |
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343 (tree_argument_list *args, const string_vector& arg_names, |
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344 octave_value_list& evaluated_args, bool& args_evaluated, |
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345 scope_id scope) |
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346 { |
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347 static bool deja_vu = false; |
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348 |
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349 // Subfunction. I think it only makes sense to check for |
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350 // subfunctions if we are currently executing a function defined |
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351 // from a .m file. |
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352 |
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353 scope_val_iterator r = subfunctions.find (scope); |
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354 |
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355 if (r != subfunctions.end ()) |
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356 { |
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357 // FIXME -- out-of-date check here. |
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358 |
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359 return r->second; |
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360 } |
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361 else if (curr_parent_function) |
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362 { |
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363 scope_id pscope = curr_parent_function->scope (); |
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364 |
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365 r = subfunctions.find (pscope); |
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366 |
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367 if (r != subfunctions.end ()) |
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368 { |
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369 // FIXME -- out-of-date check here. |
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370 |
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371 return r->second; |
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372 } |
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373 } |
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374 |
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375 // Private function. |
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376 |
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377 octave_function *curr_fcn = octave_call_stack::current (); |
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378 |
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379 if (curr_fcn) |
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380 { |
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381 std::string dir_name = curr_fcn->dir_name (); |
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382 |
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383 if (! dir_name.empty ()) |
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384 { |
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385 str_val_iterator q = private_functions.find (dir_name); |
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386 |
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387 if (q == private_functions.end ()) |
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388 { |
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389 octave_value val = load_private_function (dir_name); |
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390 |
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391 if (val.is_defined ()) |
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392 return val; |
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393 } |
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394 else |
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395 { |
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396 octave_value& fval = q->second; |
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397 |
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398 if (fval.is_defined ()) |
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399 out_of_date_check_internal (fval); |
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400 |
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401 if (fval.is_defined ()) |
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402 return fval; |
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403 else |
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404 { |
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405 octave_value val = load_private_function (dir_name); |
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406 |
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407 if (val.is_defined ()) |
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408 return val; |
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409 } |
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410 } |
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411 } |
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412 } |
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413 |
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414 // Class constructors. The class name and function name are the same. |
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415 |
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416 str_val_iterator q = class_constructors.find (name); |
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417 |
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418 if (q == class_constructors.end ()) |
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419 { |
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420 octave_value val = load_class_constructor (); |
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421 |
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422 if (val.is_defined ()) |
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423 return val; |
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424 } |
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425 else |
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1
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426 { |
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427 octave_value& fval = q->second; |
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428 |
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429 if (fval.is_defined ()) |
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430 out_of_date_check_internal (fval); |
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431 |
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432 if (fval.is_defined ()) |
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433 return fval; |
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434 else |
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435 { |
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436 octave_value val = load_class_constructor (); |
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437 |
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438 if (val.is_defined ()) |
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439 return val; |
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1
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440 } |
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441 } |
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442 |
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7336
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443 // Class methods. |
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1
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444 |
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7336
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445 if (args_evaluated || (args && args->length () > 0)) |
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446 { |
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447 if (! args_evaluated) |
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448 evaluated_args = args->convert_to_const_vector (); |
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3013
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449 |
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|
450 if (! error_state) |
|
|
451 { |
|
|
452 int n = evaluated_args.length (); |
|
|
453 |
|
|
454 if (n > 0 && ! args_evaluated) |
|
|
455 evaluated_args.stash_name_tags (arg_names); |
|
|
456 |
|
|
457 args_evaluated = true; |
|
|
458 |
|
|
459 // FIXME -- need to handle precedence. |
|
3013
|
460 |
|
7336
|
461 std::string dispatch_type = evaluated_args(0).class_name (); |
|
3013
|
462 |
|
7336
|
463 for (int i = 1; i < n; i++) |
|
|
464 { |
|
|
465 octave_value arg = evaluated_args(i); |
|
3013
|
466 |
|
7336
|
467 if (arg.is_object ()) |
|
|
468 { |
|
|
469 dispatch_type = arg.class_name (); |
|
|
470 break; |
|
|
471 } |
|
|
472 } |
|
3013
|
473 |
|
7336
|
474 octave_value fcn = find_method (dispatch_type); |
|
|
475 |
|
|
476 if (fcn.is_defined ()) |
|
|
477 return fcn; |
|
|
478 } |
|
|
479 else |
|
|
480 return octave_value (); |
|
3013
|
481 } |
|
|
482 |
|
7336
|
483 // Legacy dispatch. We just check args_evaluated here because the |
|
|
484 // actual evaluation will have happened already when searching for |
|
|
485 // class methods. |
|
|
486 |
|
|
487 if (args_evaluated && ! dispatch_map.empty ()) |
|
|
488 { |
|
|
489 std::string dispatch_type = evaluated_args(0).type_name (); |
|
|
490 |
|
|
491 std::string fname; |
|
|
492 |
|
|
493 dispatch_map_iterator p = dispatch_map.find (dispatch_type); |
|
|
494 |
|
|
495 if (p == dispatch_map.end ()) |
|
|
496 p = dispatch_map.find ("any"); |
|
3013
|
497 |
|
7336
|
498 if (p != dispatch_map.end ()) |
|
|
499 { |
|
|
500 fname = p->second; |
|
|
501 |
|
|
502 octave_value fcn |
|
|
503 = symbol_table::find_function (fname, evaluated_args, scope); |
|
|
504 |
|
|
505 if (fcn.is_defined ()) |
|
|
506 return fcn; |
|
|
507 } |
|
|
508 } |
|
|
509 |
|
|
510 // Command-line function. |
|
|
511 |
|
|
512 if (cmdline_function.is_defined ()) |
|
|
513 return cmdline_function; |
|
|
514 |
|
|
515 // Autoload? |
|
3013
|
516 |
|
7336
|
517 octave_value fcn = find_autoload (); |
|
|
518 |
|
|
519 if (fcn.is_defined ()) |
|
|
520 return fcn; |
|
|
521 |
|
|
522 // Function on the path. |
|
|
523 |
|
|
524 fcn = find_user_function (); |
|
|
525 |
|
|
526 if (fcn.is_defined ()) |
|
|
527 return fcn; |
|
|
528 |
|
|
529 // Built-in function. |
|
|
530 |
|
|
531 if (built_in_function.is_defined ()) |
|
|
532 return built_in_function; |
|
3013
|
533 |
|
7336
|
534 // At this point, we failed to find anything. It is possible that |
|
|
535 // the user created a file on the fly since the last prompt or |
|
|
536 // chdir, so try updating the load path and searching again. |
|
|
537 |
|
|
538 octave_value retval; |
|
3145
|
539 |
|
7336
|
540 if (! deja_vu) |
|
|
541 { |
|
|
542 load_path::update (); |
|
|
543 |
|
|
544 deja_vu = true; |
|
|
545 |
|
|
546 retval = find (args, arg_names, evaluated_args, args_evaluated, scope); |
|
|
547 } |
|
|
548 |
|
|
549 deja_vu = false; |
|
|
550 |
|
|
551 return retval; |
|
3013
|
552 } |
|
1
|
553 |
|
7336
|
554 octave_value |
|
|
555 symbol_table::fcn_info::fcn_info_rep::find_method (const std::string& dispatch_type) |
|
4913
|
556 { |
|
7336
|
557 octave_value retval; |
|
4913
|
558 |
|
7336
|
559 str_val_iterator q = class_methods.find (dispatch_type); |
|
4913
|
560 |
|
7336
|
561 if (q == class_methods.end ()) |
|
|
562 { |
|
|
563 octave_value val = load_class_method (dispatch_type); |
|
4913
|
564 |
|
7336
|
565 if (val.is_defined ()) |
|
|
566 return val; |
|
|
567 } |
|
|
568 else |
|
|
569 { |
|
|
570 octave_value& fval = q->second; |
|
4913
|
571 |
|
7336
|
572 if (fval.is_defined ()) |
|
|
573 out_of_date_check_internal (fval); |
|
|
574 |
|
|
575 if (fval.is_defined ()) |
|
|
576 return fval; |
|
4913
|
577 else |
|
|
578 { |
|
7336
|
579 octave_value val = load_class_method (dispatch_type); |
|
|
580 |
|
|
581 if (val.is_defined ()) |
|
|
582 return val; |
|
4913
|
583 } |
|
|
584 } |
|
|
585 |
|
7336
|
586 return retval; |
|
4913
|
587 } |
|
|
588 |
|
7336
|
589 octave_value |
|
|
590 symbol_table::fcn_info::fcn_info_rep::find_autoload (void) |
|
4913
|
591 { |
|
7336
|
592 octave_value retval; |
|
4913
|
593 |
|
7336
|
594 // Autoloaded function. |
|
4913
|
595 |
|
7336
|
596 if (autoload_function.is_defined ()) |
|
|
597 out_of_date_check_internal (autoload_function); |
|
4913
|
598 |
|
7336
|
599 if (! autoload_function.is_defined ()) |
|
|
600 { |
|
|
601 std::string file_name = lookup_autoload (name); |
|
4913
|
602 |
|
7336
|
603 if (! file_name.empty ()) |
|
|
604 { |
|
|
605 size_t pos = file_name.find_last_of (file_ops::dir_sep_chars); |
|
4913
|
606 |
|
7336
|
607 std::string dir_name = file_name.substr (0, pos); |
|
4913
|
608 |
|
7336
|
609 octave_function *fcn = load_fcn_from_file (file_name, dir_name, |
|
|
610 "", name, true); |
|
4913
|
611 |
|
7336
|
612 if (fcn) |
|
|
613 autoload_function = octave_value (fcn); |
|
|
614 } |
|
4913
|
615 } |
|
|
616 |
|
7336
|
617 return autoload_function; |
|
|
618 } |
|
4914
|
619 |
|
7336
|
620 octave_value |
|
|
621 symbol_table::fcn_info::fcn_info_rep::find_user_function (void) |
|
|
622 { |
|
|
623 // Function on the path. |
|
4913
|
624 |
|
7336
|
625 if (function_on_path.is_defined ()) |
|
|
626 out_of_date_check_internal (function_on_path); |
|
4913
|
627 |
|
7336
|
628 if (! function_on_path.is_defined ()) |
|
|
629 { |
|
|
630 std::string dir_name; |
|
4913
|
631 |
|
7336
|
632 std::string file_name = load_path::find_fcn (name, dir_name); |
|
4913
|
633 |
|
7336
|
634 if (! file_name.empty ()) |
|
|
635 { |
|
|
636 octave_function *fcn = load_fcn_from_file (file_name, dir_name); |
|
4913
|
637 |
|
7336
|
638 if (fcn) |
|
|
639 function_on_path = octave_value (fcn); |
|
4913
|
640 } |
|
|
641 } |
|
|
642 |
|
7336
|
643 return function_on_path; |
|
|
644 } |
|
|
645 |
|
|
646 octave_value |
|
|
647 symbol_table::fcn_info::find (tree_argument_list *args, |
|
|
648 const string_vector& arg_names, |
|
|
649 octave_value_list& evaluated_args, |
|
|
650 bool& args_evaluated, scope_id scope) |
|
|
651 { |
|
|
652 return rep->find (args, arg_names, evaluated_args, args_evaluated, scope); |
|
|
653 } |
|
|
654 |
|
|
655 octave_value |
|
|
656 symbol_table::find (const std::string& name, tree_argument_list *args, |
|
|
657 const string_vector& arg_names, |
|
|
658 octave_value_list& evaluated_args, bool& args_evaluated, |
|
|
659 symbol_table::scope_id scope, bool skip_variables) |
|
|
660 { |
|
|
661 symbol_table *inst = get_instance (scope); |
|
|
662 |
|
|
663 return inst |
|
|
664 ? inst->do_find (name, args, arg_names, evaluated_args, |
|
|
665 args_evaluated, scope, skip_variables) |
|
|
666 : octave_value (); |
|
|
667 } |
|
|
668 |
|
|
669 octave_value |
|
|
670 symbol_table::find_function (const std::string& name, tree_argument_list *args, |
|
|
671 const string_vector& arg_names, |
|
|
672 octave_value_list& evaluated_args, |
|
|
673 bool& args_evaluated, scope_id scope) |
|
|
674 { |
|
|
675 return find (name, args, arg_names, evaluated_args, args_evaluated, |
|
|
676 scope, true); |
|
4913
|
677 } |
|
|
678 |
|
7336
|
679 octave_value |
|
|
680 symbol_table::do_find (const std::string& name, tree_argument_list *args, |
|
|
681 const string_vector& arg_names, |
|
|
682 octave_value_list& evaluated_args, |
|
|
683 bool& args_evaluated, scope_id scope, |
|
|
684 bool skip_variables) |
|
3013
|
685 { |
|
7336
|
686 octave_value retval; |
|
4913
|
687 |
|
7336
|
688 // Variable. |
|
4913
|
689 |
|
7336
|
690 if (! skip_variables) |
|
3013
|
691 { |
|
7336
|
692 table_iterator p = table.find (name); |
|
3013
|
693 |
|
7336
|
694 if (p != table.end ()) |
|
|
695 { |
|
|
696 symbol_record& sr = p->second; |
|
3013
|
697 |
|
7336
|
698 // FIXME -- should we be using something other than varref here? |
|
5005
|
699 |
|
7336
|
700 if (sr.is_global ()) |
|
|
701 return symbol_table::varref (name, xglobal_scope); |
|
|
702 else |
|
|
703 { |
|
|
704 octave_value& val = sr.varref (); |
|
4913
|
705 |
|
7336
|
706 if (val.is_defined ()) |
|
|
707 return val; |
|
|
708 } |
|
|
709 } |
|
|
710 } |
|
4913
|
711 |
|
7336
|
712 fcn_table_iterator p = fcn_table.find (name); |
|
4913
|
713 |
|
7336
|
714 if (p != fcn_table.end ()) |
|
|
715 { |
|
|
716 evaluated_args = octave_value_list (); |
|
|
717 args_evaluated = false; |
|
3013
|
718 |
|
7336
|
719 return p->second.find (args, arg_names, evaluated_args, args_evaluated, |
|
|
720 scope); |
|
3013
|
721 } |
|
|
722 else |
|
|
723 { |
|
7336
|
724 fcn_info finfo (name); |
|
|
725 |
|
|
726 octave_value fcn = finfo.find (args, arg_names, evaluated_args, |
|
|
727 args_evaluated, scope); |
|
3013
|
728 |
|
7336
|
729 if (fcn.is_defined ()) |
|
|
730 fcn_table[name] = finfo; |
|
3013
|
731 |
|
7336
|
732 return fcn; |
|
3013
|
733 } |
|
|
734 |
|
7336
|
735 return retval; |
|
605
|
736 } |
|
|
737 |
|
7336
|
738 DEFUN (ignore_function_time_stamp, args, nargout, |
|
|
739 "-*- texinfo -*-\n\ |
|
|
740 @deftypefn {Built-in Function} {@var{val} =} ignore_function_time_stamp ()\n\ |
|
|
741 @deftypefnx {Built-in Function} {@var{old_val} =} ignore_function_time_stamp (@var{new_val})\n\ |
|
|
742 Query or set the internal variable that controls whether Octave checks\n\ |
|
|
743 the time stamp on files each time it looks up functions defined in\n\ |
|
|
744 function files. If the internal variable is set to @code{\"system\"},\n\ |
|
|
745 Octave will not automatically recompile function files in subdirectories of\n\ |
|
|
746 @file{@var{octave-home}/lib/@var{version}} if they have changed since\n\ |
|
|
747 they were last compiled, but will recompile other function files in the\n\ |
|
|
748 search path if they change. If set to @code{\"all\"}, Octave will not\n\ |
|
|
749 recompile any function files unless their definitions are removed with\n\ |
|
|
750 @code{clear}. If set to \"none\", Octave will always check time stamps\n\ |
|
|
751 on files to determine whether functions defined in function files\n\ |
|
|
752 need to recompiled.\n\ |
|
|
753 @end deftypefn") |
|
220
|
754 { |
|
7336
|
755 octave_value retval; |
|
220
|
756 |
|
7336
|
757 if (nargout > 0) |
|
5861
|
758 { |
|
7336
|
759 switch (Vignore_function_time_stamp) |
|
5861
|
760 { |
|
7336
|
761 case 1: |
|
|
762 retval = "system"; |
|
|
763 break; |
|
5861
|
764 |
|
7336
|
765 case 2: |
|
|
766 retval = "all"; |
|
|
767 break; |
|
5861
|
768 |
|
7336
|
769 default: |
|
|
770 retval = "none"; |
|
|
771 break; |
|
5861
|
772 } |
|
|
773 } |
|
|
774 |
|
7336
|
775 int nargin = args.length (); |
|
5861
|
776 |
|
7336
|
777 if (nargin == 1) |
|
3013
|
778 { |
|
7336
|
779 std::string sval = args(0).string_value (); |
|
1
|
780 |
|
7336
|
781 if (! error_state) |
|
|
782 { |
|
|
783 if (sval == "all") |
|
|
784 Vignore_function_time_stamp = 2; |
|
|
785 else if (sval == "system") |
|
|
786 Vignore_function_time_stamp = 1; |
|
|
787 else if (sval == "none") |
|
|
788 Vignore_function_time_stamp = 0; |
|
|
789 else |
|
|
790 error ("ignore_function_time_stamp: expecting argument to be \"all\", \"system\", or \"none\""); |
|
|
791 } |
|
|
792 else |
|
|
793 error ("ignore_function_time_stamp: expecting argument to be character string"); |
|
|
794 } |
|
|
795 else if (nargin > 1) |
|
|
796 print_usage (); |
|
4238
|
797 |
|
7336
|
798 return retval; |
|
3308
|
799 } |
|
|
800 |
|
7437
|
801 #if 0 |
|
|
802 |
|
|
803 // FIXME -- should we have functions like this in Octave? |
|
|
804 |
|
|
805 DEFUN (set_variable, args, , "set_variable (NAME, VALUE)") |
|
|
806 { |
|
|
807 octave_value retval; |
|
|
808 |
|
|
809 if (args.length () == 2) |
|
|
810 { |
|
|
811 std::string name = args(0).string_value (); |
|
|
812 |
|
|
813 if (! error_state) |
|
|
814 symbol_table::varref (name) = args(1); |
|
|
815 else |
|
|
816 error ("set_variable: expecting variable name as first argument"); |
|
|
817 } |
|
|
818 else |
|
|
819 print_usage (); |
|
|
820 |
|
|
821 return retval; |
|
|
822 } |
|
|
823 |
|
|
824 DEFUN (variable_value, args, , "VALUE = variable_value (NAME)") |
|
|
825 { |
|
|
826 octave_value retval; |
|
|
827 |
|
|
828 if (args.length () == 1) |
|
|
829 { |
|
|
830 std::string name = args(0).string_value (); |
|
|
831 |
|
|
832 if (! error_state) |
|
|
833 { |
|
|
834 retval = symbol_table::varval (name); |
|
|
835 |
|
|
836 if (retval.is_undefined ()) |
|
|
837 error ("variable_value: `%s' is not a variable in the current scope", |
|
|
838 name.c_str ()); |
|
|
839 } |
|
|
840 else |
|
|
841 error ("variable_value: expecting variable name as first argument"); |
|
|
842 } |
|
|
843 else |
|
|
844 print_usage (); |
|
|
845 |
|
|
846 return retval; |
|
|
847 } |
|
|
848 #endif |
|
|
849 |
|
1
|
850 /* |
|
|
851 ;;; Local Variables: *** |
|
|
852 ;;; mode: C++ *** |
|
|
853 ;;; End: *** |
|
|
854 */ |
