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4343
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1 /* |
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2 |
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3 Copyright (C) 2003 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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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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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 <iostream> |
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5164
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29 #include <vector> |
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4343
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30 |
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31 #include "defun.h" |
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32 #include "error.h" |
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33 #include "gripes.h" |
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34 #include "oct-map.h" |
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35 #include "ov-base.h" |
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36 #include "ov-fcn-handle.h" |
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4980
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37 #include "ov-usr-fcn.h" |
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4343
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38 #include "pr-output.h" |
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4980
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39 #include "pt-pr-code.h" |
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40 #include "pt-misc.h" |
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41 #include "pt-stmt.h" |
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42 #include "pt-cmd.h" |
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43 #include "pt-exp.h" |
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44 #include "pt-assign.h" |
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4343
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45 #include "variables.h" |
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4988
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46 #include "parse.h" |
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47 |
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48 #include "byte-swap.h" |
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49 #include "ls-oct-ascii.h" |
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50 #include "ls-hdf5.h" |
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51 #include "ls-utils.h" |
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4343
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52 |
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53 DEFINE_OCTAVE_ALLOCATOR (octave_fcn_handle); |
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54 |
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4612
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55 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_fcn_handle, |
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56 "function handle", |
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57 "function handle"); |
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58 |
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4924
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59 octave_value_list |
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60 octave_fcn_handle::subsref (const std::string& type, |
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61 const std::list<octave_value_list>& idx, |
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62 int nargout) |
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63 { |
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64 octave_value_list retval; |
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65 |
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66 switch (type[0]) |
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67 { |
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68 case '(': |
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69 { |
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70 octave_function *f = function_value (); |
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5312
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71 |
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72 // XXX FIXME XXX -- need to check to see if the function has a |
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73 // new definition. The following does not work for function |
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74 // handles that refer to subfunctions or functions defined on |
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75 // the command line. |
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76 // |
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77 // if (function_out_of_date (f)) |
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78 // { |
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79 // octave_value tmp = lookup_function (fcn_name ()); |
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80 // |
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81 // octave_function *ftmp = tmp.function_value (true); |
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82 // |
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83 // if (ftmp) |
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84 // f = ftmp; |
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85 // } |
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86 |
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87 if (f) |
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88 retval = f->subsref (type, idx, nargout); |
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89 else |
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90 error ("invalid function handle"); |
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4924
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91 } |
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92 break; |
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93 |
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94 |
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95 case '{': |
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96 case '.': |
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97 { |
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4930
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98 std::string typ_nm = type_name (); |
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99 error ("%s cannot be indexed with %c", typ_nm.c_str (), type[0]); |
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100 } |
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101 break; |
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102 |
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103 default: |
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104 panic_impossible (); |
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105 } |
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106 |
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107 // XXX FIXME XXX -- perhaps there should be an |
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108 // octave_value_list::next_subsref member function? See also |
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109 // octave_builtin::subsref. |
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110 |
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111 if (idx.size () > 1) |
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112 retval = retval(0).next_subsref (nargout, type, idx); |
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113 |
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114 return retval; |
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115 } |
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116 |
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117 bool |
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118 octave_fcn_handle::save_ascii (std::ostream& os, bool&, bool) |
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119 { |
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120 os << nm << "\n"; |
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121 |
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122 if (nm == "@<anonymous>") |
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123 { |
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124 print_raw (os, true); |
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125 os << "\n"; |
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126 } |
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127 |
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128 return true; |
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129 } |
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130 |
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131 bool |
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132 octave_fcn_handle::load_ascii (std::istream& is) |
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133 { |
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134 is >> nm; |
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135 |
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4988
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136 if (nm == "@<anonymous>") |
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137 { |
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138 char c; |
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139 OSSTREAM buf; |
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140 |
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4989
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141 // Skip preceeding newline(s). |
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142 while (is.get (c) && c == '\n') |
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143 /* do nothing */; |
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144 |
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145 if (is) |
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146 { |
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147 buf << c; |
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148 |
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149 // Get a line of text whitespace characters included, leaving |
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4989
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150 // newline in the stream. |
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151 |
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4988
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152 while (is.peek () != '\n') |
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153 { |
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154 is.get (c); |
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155 if (! is) |
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156 break; |
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157 buf << c; |
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158 } |
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159 } |
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160 |
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161 buf << OSSTREAM_ENDS; |
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162 |
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163 int parse_status; |
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4989
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164 octave_value anon_fcn_handle = eval_string (OSSTREAM_STR (buf), |
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165 true, parse_status); |
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166 OSSTREAM_FREEZE (buf); |
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167 |
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168 if (parse_status == 0) |
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169 { |
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170 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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171 if (fh) |
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172 fcn = fh->fcn; |
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173 else |
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174 return false; |
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175 } |
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176 else |
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177 return false; |
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4988
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178 } |
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179 else |
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180 { |
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181 fcn = lookup_function (nm); |
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182 if (! fcn.is_function ()) |
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183 return false; |
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184 } |
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185 |
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186 return true; |
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187 } |
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188 |
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189 bool |
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190 octave_fcn_handle::save_binary (std::ostream& os, bool&) |
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191 { |
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192 FOUR_BYTE_INT tmp = nm.length (); |
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193 os.write (X_CAST (char *, &tmp), 4); |
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194 os.write (nm.c_str (), nm.length ()); |
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195 if (nm == "@<anonymous>") |
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196 { |
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197 OSSTREAM buf; |
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198 print_raw (buf, true); |
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199 std::string stmp = OSSTREAM_STR (buf); |
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200 OSSTREAM_FREEZE (buf); |
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201 tmp = stmp.length (); |
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202 os.write (X_CAST (char *, &tmp), 4); |
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203 os.write (stmp.c_str (), stmp.length ()); |
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204 } |
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205 return true; |
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206 } |
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207 |
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208 bool |
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209 octave_fcn_handle::load_binary (std::istream& is, bool swap, |
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210 oct_mach_info::float_format) |
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211 { |
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212 FOUR_BYTE_INT tmp; |
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213 if (! is.read (X_CAST (char *, &tmp), 4)) |
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214 return false; |
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215 if (swap) |
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216 swap_bytes<4> (&tmp); |
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217 |
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218 OCTAVE_LOCAL_BUFFER (char, ctmp1, tmp+1); |
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219 is.read (ctmp1, tmp); |
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220 nm = std::string (ctmp1); |
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221 |
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222 if (! is) |
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223 return false; |
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224 |
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225 if (nm == "@<anonymous>") |
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226 { |
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227 if (! is.read (X_CAST (char *, &tmp), 4)) |
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228 return false; |
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229 if (swap) |
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230 swap_bytes<4> (&tmp); |
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231 |
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232 OCTAVE_LOCAL_BUFFER (char, ctmp2, tmp+1); |
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233 is.read (ctmp2, tmp); |
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234 |
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235 int parse_status; |
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236 octave_value anon_fcn_handle = eval_string (ctmp2, true, parse_status); |
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237 |
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238 if (parse_status == 0) |
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239 { |
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240 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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241 if (fh) |
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242 fcn = fh->fcn; |
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243 else |
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244 return false; |
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245 } |
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246 else |
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247 return false; |
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4988
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248 } |
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249 else |
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250 { |
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251 fcn = lookup_function (nm); |
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252 if (! fcn.is_function ()) |
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253 return false; |
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254 } |
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255 return true; |
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256 } |
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257 |
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258 #if defined (HAVE_HDF5) |
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259 bool |
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260 octave_fcn_handle::save_hdf5 (hid_t loc_id, const char *name, |
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261 bool /* save_as_floats */) |
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262 { |
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263 hid_t group_hid = -1; |
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264 group_hid = H5Gcreate (loc_id, name, 0); |
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265 if (group_hid < 0 ) return false; |
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266 |
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267 hid_t space_hid = -1, data_hid = -1, type_hid = -1;; |
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268 bool retval = true; |
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269 |
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270 // attach the type of the variable |
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271 type_hid = H5Tcopy (H5T_C_S1); |
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272 H5Tset_size (type_hid, nm.length () + 1); |
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273 if (type_hid < 0) |
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274 { |
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275 H5Gclose (group_hid); |
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276 return false; |
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277 } |
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278 |
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279 OCTAVE_LOCAL_BUFFER (hsize_t, hdims, 2); |
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280 hdims[0] = 0; |
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281 hdims[1] = 0; |
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282 space_hid = H5Screate_simple (0 , hdims, (hsize_t*) 0); |
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283 if (space_hid < 0) |
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284 { |
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285 H5Tclose (type_hid); |
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286 H5Gclose (group_hid); |
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287 return false; |
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288 } |
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289 |
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290 data_hid = H5Dcreate (group_hid, "nm", type_hid, space_hid, H5P_DEFAULT); |
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291 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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292 H5P_DEFAULT, |
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4990
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293 X_CAST (void *, nm.c_str ())) < 0) |
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4988
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294 { |
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295 H5Sclose (space_hid); |
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296 H5Tclose (type_hid); |
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297 H5Gclose (group_hid); |
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298 return false; |
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299 } |
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300 H5Dclose (data_hid); |
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301 |
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302 if (nm == "@<anonymous>") |
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303 { |
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304 OSSTREAM buf; |
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305 print_raw (buf, true); |
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306 std::string stmp = OSSTREAM_STR (buf); |
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307 OSSTREAM_FREEZE (buf); |
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308 |
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309 // attach the type of the variable |
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310 H5Tset_size (type_hid, stmp.length () + 1); |
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311 if (type_hid < 0) |
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312 { |
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313 H5Gclose (group_hid); |
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314 return false; |
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315 } |
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316 |
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317 data_hid = H5Dcreate (group_hid, "fcn", type_hid, space_hid, |
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318 H5P_DEFAULT); |
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319 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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320 H5P_DEFAULT, |
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4990
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321 X_CAST (void *, stmp.c_str ())) < 0) |
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4988
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322 { |
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323 H5Sclose (space_hid); |
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324 H5Tclose (type_hid); |
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325 H5Gclose (group_hid); |
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326 return false; |
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327 } |
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328 |
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329 H5Dclose (data_hid); |
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330 } |
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331 |
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332 H5Sclose (space_hid); |
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333 H5Tclose (type_hid); |
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334 H5Gclose (group_hid); |
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335 |
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336 return retval; |
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337 } |
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338 |
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339 bool |
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340 octave_fcn_handle::load_hdf5 (hid_t loc_id, const char *name, |
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341 bool /* have_h5giterate_bug */) |
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342 { |
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343 hid_t group_hid, data_hid, space_hid, type_hid, type_class_hid, st_id; |
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344 hsize_t rank; |
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345 int slen; |
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346 |
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347 group_hid = H5Gopen (loc_id, name); |
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348 if (group_hid < 0 ) return false; |
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349 |
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350 data_hid = H5Dopen (group_hid, "nm"); |
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351 |
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352 if (data_hid < 0) |
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353 { |
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354 H5Gclose (group_hid); |
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355 return false; |
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356 } |
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357 |
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358 type_hid = H5Dget_type (data_hid); |
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359 type_class_hid = H5Tget_class (type_hid); |
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360 |
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361 if (type_class_hid != H5T_STRING) |
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362 { |
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363 H5Tclose (type_hid); |
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364 H5Dclose (data_hid); |
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365 H5Gclose (group_hid); |
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366 return false; |
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367 } |
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368 |
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369 space_hid = H5Dget_space (data_hid); |
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370 rank = H5Sget_simple_extent_ndims (space_hid); |
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371 |
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372 if (rank != 0) |
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373 { |
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374 H5Sclose (space_hid); |
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375 H5Tclose (type_hid); |
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376 H5Dclose (data_hid); |
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377 H5Gclose (group_hid); |
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378 return false; |
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379 } |
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380 |
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381 slen = H5Tget_size (type_hid); |
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382 if (slen < 0) |
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383 { |
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384 H5Sclose (space_hid); |
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385 H5Tclose (type_hid); |
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386 H5Dclose (data_hid); |
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387 H5Gclose (group_hid); |
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388 return false; |
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389 } |
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390 |
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391 OCTAVE_LOCAL_BUFFER (char, nm_tmp, slen); |
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392 |
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393 // create datatype for (null-terminated) string to read into: |
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394 st_id = H5Tcopy (H5T_C_S1); |
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395 H5Tset_size (st_id, slen); |
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396 |
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397 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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398 X_CAST (void *, nm_tmp)) < 0) |
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399 { |
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400 H5Sclose (space_hid); |
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401 H5Tclose (type_hid); |
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402 H5Gclose (group_hid); |
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403 return false; |
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404 } |
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405 H5Tclose (st_id); |
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406 H5Dclose (data_hid); |
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407 nm = nm_tmp; |
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408 |
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409 if (nm == "@<anonymous>") |
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410 { |
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411 data_hid = H5Dopen (group_hid, "fcn"); |
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412 |
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413 if (data_hid < 0) |
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414 { |
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415 H5Gclose (group_hid); |
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416 return false; |
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417 } |
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418 |
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419 type_hid = H5Dget_type (data_hid); |
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420 type_class_hid = H5Tget_class (type_hid); |
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421 |
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422 if (type_class_hid != H5T_STRING) |
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423 { |
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424 H5Tclose (type_hid); |
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425 H5Dclose (data_hid); |
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426 H5Gclose (group_hid); |
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427 return false; |
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428 } |
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429 |
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430 space_hid = H5Dget_space (data_hid); |
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431 rank = H5Sget_simple_extent_ndims (space_hid); |
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432 |
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433 if (rank != 0) |
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434 { |
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435 H5Sclose (space_hid); |
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436 H5Tclose (type_hid); |
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437 H5Dclose (data_hid); |
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438 H5Gclose (group_hid); |
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439 return false; |
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440 } |
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441 |
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442 slen = H5Tget_size (type_hid); |
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443 if (slen < 0) |
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444 { |
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445 H5Sclose (space_hid); |
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446 H5Tclose (type_hid); |
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447 H5Dclose (data_hid); |
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448 H5Gclose (group_hid); |
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449 return false; |
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450 } |
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451 |
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452 OCTAVE_LOCAL_BUFFER (char, fcn_tmp, slen); |
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453 |
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454 // create datatype for (null-terminated) string to read into: |
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455 st_id = H5Tcopy (H5T_C_S1); |
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456 H5Tset_size (st_id, slen); |
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457 |
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458 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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|
459 X_CAST (void *, fcn_tmp)) < 0) |
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460 { |
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461 H5Sclose (space_hid); |
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462 H5Tclose (type_hid); |
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463 H5Gclose (group_hid); |
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464 return false; |
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|
465 } |
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466 H5Dclose (data_hid); |
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467 H5Tclose (st_id); |
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468 |
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469 int parse_status; |
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|
470 octave_value anon_fcn_handle = eval_string (fcn_tmp, true, parse_status); |
|
|
471 |
|
4989
|
472 if (parse_status == 0) |
|
|
473 { |
|
|
474 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
|
|
475 if (fh) |
|
|
476 fcn = fh->fcn; |
|
|
477 else |
|
|
478 return false; |
|
|
479 } |
|
|
480 else |
|
|
481 return false; |
|
4988
|
482 } |
|
|
483 else |
|
|
484 { |
|
|
485 fcn = lookup_function (nm); |
|
|
486 if (! fcn.is_function ()) |
|
|
487 return false; |
|
|
488 } |
|
|
489 |
|
|
490 return true; |
|
|
491 } |
|
|
492 #endif |
|
|
493 |
|
4343
|
494 void |
|
|
495 octave_fcn_handle::print (std::ostream& os, bool pr_as_read_syntax) const |
|
|
496 { |
|
|
497 print_raw (os, pr_as_read_syntax); |
|
|
498 newline (os); |
|
|
499 } |
|
|
500 |
|
|
501 void |
|
|
502 octave_fcn_handle::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
|
|
503 { |
|
4980
|
504 bool printed = false; |
|
|
505 |
|
|
506 if (nm == "@<anonymous>") |
|
|
507 { |
|
|
508 tree_print_code tpc (os); |
|
|
509 |
|
4989
|
510 // FCN is const because this member function is, so we can't |
|
4980
|
511 // use it to call user_function_value, so we make a copy first. |
|
|
512 |
|
|
513 octave_value ftmp = fcn; |
|
|
514 |
|
|
515 octave_user_function *f = ftmp.user_function_value (); |
|
|
516 |
|
|
517 if (f) |
|
|
518 { |
|
|
519 tree_parameter_list *p = f->parameter_list (); |
|
|
520 |
|
|
521 os << "@("; |
|
|
522 |
|
|
523 if (p) |
|
|
524 p->accept (tpc); |
|
|
525 |
|
|
526 os << ") "; |
|
|
527 |
|
|
528 tree_statement_list *b = f->body (); |
|
|
529 |
|
|
530 if (b) |
|
|
531 { |
|
|
532 assert (b->length () == 1); |
|
|
533 |
|
|
534 tree_statement *s = b->front (); |
|
|
535 |
|
|
536 if (s) |
|
|
537 { |
|
|
538 if (s->is_expression ()) |
|
|
539 { |
|
|
540 tree_expression *e = s->expression (); |
|
|
541 |
|
|
542 if (e) |
|
|
543 { |
|
|
544 if (e->is_assignment_expression ()) |
|
|
545 { |
|
|
546 // The parser builds an assignment to |
|
|
547 // __retval__, and we don't want to |
|
|
548 // display that part. |
|
|
549 |
|
|
550 tree_simple_assignment *tsa |
|
|
551 = reinterpret_cast <tree_simple_assignment *> (e); |
|
|
552 tree_expression *rhs = tsa->right_hand_side (); |
|
|
553 |
|
|
554 if (rhs) |
|
|
555 rhs->accept (tpc); |
|
|
556 } |
|
|
557 else |
|
|
558 e->accept (tpc); |
|
|
559 } |
|
|
560 } |
|
|
561 else |
|
|
562 { |
|
|
563 tree_command *c = s->command (); |
|
|
564 |
|
|
565 tpc.suspend_newline (); |
|
|
566 c->accept (tpc); |
|
|
567 tpc.resume_newline (); |
|
|
568 } |
|
|
569 } |
|
|
570 } |
|
|
571 |
|
|
572 printed = true; |
|
|
573 } |
|
|
574 } |
|
|
575 |
|
|
576 if (! printed) |
|
|
577 octave_print_internal (os, nm, pr_as_read_syntax, |
|
|
578 current_print_indent_level ()); |
|
4343
|
579 } |
|
|
580 |
|
|
581 octave_value |
|
|
582 make_fcn_handle (const std::string& nm) |
|
|
583 { |
|
|
584 octave_value retval; |
|
|
585 |
|
4930
|
586 octave_value f = lookup_function (nm); |
|
4343
|
587 |
|
4930
|
588 if (f.is_function ()) |
|
|
589 retval = octave_value (new octave_fcn_handle (f, nm)); |
|
4343
|
590 else |
|
|
591 error ("error creating function handle \"@%s\"", nm.c_str ()); |
|
|
592 |
|
|
593 return retval; |
|
|
594 } |
|
|
595 |
|
4933
|
596 DEFUN (functions, args, , |
|
4343
|
597 "-*- texinfo -*-\n\ |
|
4933
|
598 @deftypefn {Built-in Function} {} functions (@var{fcn_handle})\n\ |
|
|
599 Return a struct containing information about the function handle\n\ |
|
|
600 @var{fcn_handle}.\n\ |
|
|
601 @end deftypefn") |
|
4343
|
602 { |
|
|
603 octave_value retval; |
|
|
604 |
|
4933
|
605 if (args.length () == 1) |
|
4343
|
606 { |
|
4933
|
607 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
|
4343
|
608 |
|
|
609 if (! error_state) |
|
|
610 { |
|
4933
|
611 octave_function *fcn = fh ? fh->function_value (true) : 0; |
|
4343
|
612 |
|
4933
|
613 if (fcn) |
|
4930
|
614 { |
|
4933
|
615 Octave_map m; |
|
4649
|
616 |
|
4933
|
617 std::string fh_nm = fh->fcn_name (); |
|
|
618 |
|
4978
|
619 m.assign ("function", fh_nm); |
|
4343
|
620 |
|
4933
|
621 if (fcn->is_nested_function ()) |
|
|
622 m.assign ("type", "subfunction"); |
|
|
623 else |
|
|
624 m.assign ("type", "simple"); |
|
|
625 |
|
|
626 std::string nm = fcn->fcn_file_name (); |
|
4343
|
627 |
|
4933
|
628 if (nm.empty ()) |
|
4935
|
629 { |
|
|
630 if (fh_nm == "@<anonymous>") |
|
|
631 m.assign ("file", "none"); |
|
5313
|
632 else if (fcn->is_user_function ()) |
|
|
633 m.assign ("file", "command-line function"); |
|
4935
|
634 else |
|
|
635 m.assign ("file", "built-in function"); |
|
|
636 } |
|
4343
|
637 else |
|
4933
|
638 m.assign ("file", nm); |
|
|
639 |
|
|
640 retval = m; |
|
4343
|
641 } |
|
|
642 else |
|
4933
|
643 error ("functions: invalid function handle object"); |
|
4343
|
644 } |
|
|
645 else |
|
4933
|
646 error ("functions: argument must be a function handle object"); |
|
4343
|
647 } |
|
|
648 else |
|
4933
|
649 print_usage ("functions"); |
|
4343
|
650 |
|
|
651 return retval; |
|
|
652 } |
|
|
653 |
|
4933
|
654 DEFUN (func2str, args, , |
|
4343
|
655 "-*- texinfo -*-\n\ |
|
4933
|
656 @deftypefn {Built-in Function} {} func2str (@var{fcn_handle})\n\ |
|
|
657 Return a string containing the name of the function referenced by\n\ |
|
|
658 the function handle @var{fcn_handle}.\n\ |
|
|
659 @end deftypefn") |
|
4343
|
660 { |
|
|
661 octave_value retval; |
|
|
662 |
|
4933
|
663 if (args.length () == 1) |
|
4930
|
664 { |
|
4933
|
665 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
|
4930
|
666 |
|
4933
|
667 if (! error_state && fh) |
|
|
668 { |
|
|
669 std::string fh_nm = fh->fcn_name (); |
|
4978
|
670 retval = fh_nm; |
|
4933
|
671 } |
|
4343
|
672 else |
|
4933
|
673 error ("func2str: expecting valid function handle as first argument"); |
|
4343
|
674 } |
|
|
675 else |
|
4933
|
676 print_usage ("func2str"); |
|
4343
|
677 |
|
|
678 return retval; |
|
|
679 } |
|
|
680 |
|
4933
|
681 DEFUN (str2func, args, , |
|
4343
|
682 "-*- texinfo -*-\n\ |
|
4933
|
683 @deftypefn {Built-in Function} {} str2func (@var{fcn_name})\n\ |
|
|
684 Return a function handle constructed from the string @var{fcn_name}.\n\ |
|
|
685 @end deftypefn") |
|
4343
|
686 { |
|
|
687 octave_value retval; |
|
|
688 |
|
4933
|
689 if (args.length () == 1) |
|
4343
|
690 { |
|
4933
|
691 std::string nm = args(0).string_value (); |
|
4343
|
692 |
|
4933
|
693 if (! error_state) |
|
|
694 retval = make_fcn_handle (nm); |
|
4343
|
695 else |
|
4933
|
696 error ("str2func: expecting string as first argument"); |
|
4343
|
697 } |
|
|
698 else |
|
4933
|
699 print_usage ("str2func"); |
|
4343
|
700 |
|
|
701 return retval; |
|
|
702 } |
|
|
703 |
|
|
704 /* |
|
|
705 ;;; Local Variables: *** |
|
|
706 ;;; mode: C++ *** |
|
|
707 ;;; End: *** |
|
|
708 */ |
