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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <iostream> |
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28 |
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29 #include "defun.h" |
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4654
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30 #include "error.h" |
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31 #include "gripes.h" |
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4343
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32 #include "oct-map.h" |
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33 #include "ov-base.h" |
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34 #include "ov-fcn-handle.h" |
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4980
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35 #include "ov-usr-fcn.h" |
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4343
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36 #include "pr-output.h" |
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4980
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37 #include "pt-pr-code.h" |
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38 #include "pt-misc.h" |
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39 #include "pt-stmt.h" |
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40 #include "pt-cmd.h" |
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41 #include "pt-exp.h" |
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42 #include "pt-assign.h" |
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4343
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43 #include "variables.h" |
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4988
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44 #include "parse.h" |
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45 |
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46 #include "byte-swap.h" |
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47 #include "ls-oct-ascii.h" |
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48 #include "ls-hdf5.h" |
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49 #include "ls-utils.h" |
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4343
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50 |
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51 DEFINE_OCTAVE_ALLOCATOR (octave_fcn_handle); |
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52 |
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4612
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53 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_fcn_handle, |
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54 "function handle", |
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55 "function handle"); |
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4343
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56 |
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4924
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57 octave_value_list |
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58 octave_fcn_handle::subsref (const std::string& type, |
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59 const std::list<octave_value_list>& idx, |
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60 int nargout) |
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61 { |
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62 octave_value_list retval; |
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63 |
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64 switch (type[0]) |
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65 { |
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66 case '(': |
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67 { |
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68 octave_function *f = function_value (); |
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69 retval = f->subsref (type, idx, nargout); |
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70 } |
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71 break; |
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72 |
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73 |
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74 case '{': |
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75 case '.': |
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76 { |
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4930
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77 std::string typ_nm = type_name (); |
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78 error ("%s cannot be indexed with %c", typ_nm.c_str (), type[0]); |
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4924
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79 } |
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80 break; |
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81 |
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82 default: |
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83 panic_impossible (); |
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84 } |
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85 |
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86 // XXX FIXME XXX -- perhaps there should be an |
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87 // octave_value_list::next_subsref member function? See also |
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88 // octave_builtin::subsref. |
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89 |
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90 if (idx.size () > 1) |
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4994
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91 retval = retval(0).next_subsref (nargout, type, idx); |
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4924
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92 |
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93 return retval; |
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94 } |
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95 |
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4988
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96 bool |
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97 octave_fcn_handle::save_ascii (std::ostream& os, bool&, bool) |
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98 { |
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99 os << nm << "\n"; |
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100 |
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101 if (nm == "@<anonymous>") |
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102 { |
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103 print_raw (os, true); |
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104 os << "\n"; |
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105 } |
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106 |
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107 return true; |
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108 } |
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109 |
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110 bool |
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111 octave_fcn_handle::load_ascii (std::istream& is) |
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112 { |
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113 is >> nm; |
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114 |
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4988
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115 if (nm == "@<anonymous>") |
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116 { |
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117 char c; |
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118 OSSTREAM buf; |
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119 |
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4989
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120 // Skip preceeding newline(s). |
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121 while (is.get (c) && c == '\n') |
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122 /* do nothing */; |
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123 |
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124 if (is) |
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125 { |
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126 buf << c; |
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127 |
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128 // Get a line of text whitespace characters included, leaving |
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4989
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129 // newline in the stream. |
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130 |
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4988
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131 while (is.peek () != '\n') |
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132 { |
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133 is.get (c); |
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134 if (! is) |
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135 break; |
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136 buf << c; |
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137 } |
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138 } |
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139 |
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140 buf << OSSTREAM_ENDS; |
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141 |
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142 int parse_status; |
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4989
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143 octave_value anon_fcn_handle = eval_string (OSSTREAM_STR (buf), |
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144 true, parse_status); |
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145 OSSTREAM_FREEZE (buf); |
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146 |
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4989
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147 if (parse_status == 0) |
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148 { |
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149 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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150 if (fh) |
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151 fcn = fh->fcn; |
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152 else |
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153 return false; |
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154 } |
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155 else |
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156 return false; |
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4988
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157 } |
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158 else |
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159 { |
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160 fcn = lookup_function (nm); |
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161 if (! fcn.is_function ()) |
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162 return false; |
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163 } |
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164 |
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165 return true; |
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166 } |
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167 |
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168 bool |
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169 octave_fcn_handle::save_binary (std::ostream& os, bool&) |
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170 { |
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171 FOUR_BYTE_INT tmp = nm.length (); |
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172 os.write (X_CAST (char *, &tmp), 4); |
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173 os.write (nm.c_str (), nm.length ()); |
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174 if (nm == "@<anonymous>") |
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175 { |
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176 OSSTREAM buf; |
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177 print_raw (buf, true); |
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178 std::string stmp = OSSTREAM_STR (buf); |
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179 OSSTREAM_FREEZE (buf); |
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180 tmp = stmp.length (); |
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181 os.write (X_CAST (char *, &tmp), 4); |
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182 os.write (stmp.c_str (), stmp.length ()); |
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183 } |
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184 return true; |
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185 } |
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186 |
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187 bool |
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188 octave_fcn_handle::load_binary (std::istream& is, bool swap, |
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189 oct_mach_info::float_format) |
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190 { |
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191 FOUR_BYTE_INT tmp; |
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192 if (! is.read (X_CAST (char *, &tmp), 4)) |
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193 return false; |
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194 if (swap) |
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195 swap_bytes<4> (&tmp); |
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196 |
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197 OCTAVE_LOCAL_BUFFER (char, ctmp1, tmp+1); |
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198 is.read (ctmp1, tmp); |
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199 nm = std::string (ctmp1); |
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200 |
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201 if (! is) |
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202 return false; |
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203 |
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204 if (nm == "@<anonymous>") |
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205 { |
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206 if (! is.read (X_CAST (char *, &tmp), 4)) |
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207 return false; |
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208 if (swap) |
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209 swap_bytes<4> (&tmp); |
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210 |
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211 OCTAVE_LOCAL_BUFFER (char, ctmp2, tmp+1); |
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212 is.read (ctmp2, tmp); |
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213 |
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214 int parse_status; |
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215 octave_value anon_fcn_handle = eval_string (ctmp2, true, parse_status); |
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216 |
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217 if (parse_status == 0) |
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218 { |
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219 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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220 if (fh) |
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221 fcn = fh->fcn; |
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222 else |
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223 return false; |
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224 } |
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225 else |
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226 return false; |
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227 } |
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228 else |
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229 { |
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230 fcn = lookup_function (nm); |
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231 if (! fcn.is_function ()) |
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232 return false; |
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233 } |
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234 return true; |
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235 } |
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236 |
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237 #if defined (HAVE_HDF5) |
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238 bool |
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239 octave_fcn_handle::save_hdf5 (hid_t loc_id, const char *name, |
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240 bool /* save_as_floats */) |
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241 { |
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242 hid_t group_hid = -1; |
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243 group_hid = H5Gcreate (loc_id, name, 0); |
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244 if (group_hid < 0 ) return false; |
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245 |
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246 hid_t space_hid = -1, data_hid = -1, type_hid = -1;; |
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247 bool retval = true; |
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248 |
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249 // attach the type of the variable |
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250 type_hid = H5Tcopy (H5T_C_S1); |
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251 H5Tset_size (type_hid, nm.length () + 1); |
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252 if (type_hid < 0) |
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253 { |
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254 H5Gclose (group_hid); |
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255 return false; |
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256 } |
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257 |
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258 OCTAVE_LOCAL_BUFFER (hsize_t, hdims, 2); |
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259 hdims[0] = 0; |
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260 hdims[1] = 0; |
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261 space_hid = H5Screate_simple (0 , hdims, (hsize_t*) 0); |
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262 if (space_hid < 0) |
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263 { |
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264 H5Tclose (type_hid); |
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265 H5Gclose (group_hid); |
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266 return false; |
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267 } |
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268 |
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269 data_hid = H5Dcreate (group_hid, "nm", type_hid, space_hid, H5P_DEFAULT); |
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270 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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271 H5P_DEFAULT, |
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4990
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272 X_CAST (void *, nm.c_str ())) < 0) |
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4988
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273 { |
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274 H5Sclose (space_hid); |
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275 H5Tclose (type_hid); |
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276 H5Gclose (group_hid); |
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277 return false; |
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278 } |
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279 H5Dclose (data_hid); |
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280 |
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281 if (nm == "@<anonymous>") |
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282 { |
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283 OSSTREAM buf; |
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284 print_raw (buf, true); |
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285 std::string stmp = OSSTREAM_STR (buf); |
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286 OSSTREAM_FREEZE (buf); |
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287 |
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288 // attach the type of the variable |
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289 H5Tset_size (type_hid, stmp.length () + 1); |
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290 if (type_hid < 0) |
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291 { |
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292 H5Gclose (group_hid); |
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293 return false; |
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294 } |
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295 |
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296 data_hid = H5Dcreate (group_hid, "fcn", type_hid, space_hid, |
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297 H5P_DEFAULT); |
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298 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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299 H5P_DEFAULT, |
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300 X_CAST (void *, stmp.c_str ())) < 0) |
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4988
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301 { |
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302 H5Sclose (space_hid); |
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303 H5Tclose (type_hid); |
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304 H5Gclose (group_hid); |
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305 return false; |
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306 } |
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307 |
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308 H5Dclose (data_hid); |
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309 } |
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310 |
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311 H5Sclose (space_hid); |
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312 H5Tclose (type_hid); |
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313 H5Gclose (group_hid); |
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314 |
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315 return retval; |
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316 } |
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317 |
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318 bool |
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319 octave_fcn_handle::load_hdf5 (hid_t loc_id, const char *name, |
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320 bool /* have_h5giterate_bug */) |
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321 { |
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322 hid_t group_hid, data_hid, space_hid, type_hid, type_class_hid, st_id; |
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323 hsize_t rank; |
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324 int slen; |
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325 |
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326 group_hid = H5Gopen (loc_id, name); |
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327 if (group_hid < 0 ) return false; |
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328 |
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329 data_hid = H5Dopen (group_hid, "nm"); |
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330 |
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331 if (data_hid < 0) |
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332 { |
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333 H5Gclose (group_hid); |
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334 return false; |
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335 } |
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336 |
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337 type_hid = H5Dget_type (data_hid); |
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338 type_class_hid = H5Tget_class (type_hid); |
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339 |
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340 if (type_class_hid != H5T_STRING) |
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341 { |
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342 H5Tclose (type_hid); |
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343 H5Dclose (data_hid); |
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344 H5Gclose (group_hid); |
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345 return false; |
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346 } |
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347 |
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348 space_hid = H5Dget_space (data_hid); |
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349 rank = H5Sget_simple_extent_ndims (space_hid); |
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350 |
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351 if (rank != 0) |
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352 { |
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353 H5Sclose (space_hid); |
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354 H5Tclose (type_hid); |
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355 H5Dclose (data_hid); |
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356 H5Gclose (group_hid); |
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357 return false; |
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358 } |
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359 |
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360 slen = H5Tget_size (type_hid); |
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361 if (slen < 0) |
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362 { |
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363 H5Sclose (space_hid); |
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364 H5Tclose (type_hid); |
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365 H5Dclose (data_hid); |
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366 H5Gclose (group_hid); |
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367 return false; |
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368 } |
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369 |
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370 OCTAVE_LOCAL_BUFFER (char, nm_tmp, slen); |
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371 |
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372 // create datatype for (null-terminated) string to read into: |
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373 st_id = H5Tcopy (H5T_C_S1); |
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374 H5Tset_size (st_id, slen); |
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375 |
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376 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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377 X_CAST (void *, nm_tmp)) < 0) |
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378 { |
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379 H5Sclose (space_hid); |
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380 H5Tclose (type_hid); |
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381 H5Gclose (group_hid); |
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382 return false; |
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383 } |
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384 H5Tclose (st_id); |
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385 H5Dclose (data_hid); |
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386 nm = nm_tmp; |
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387 |
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388 if (nm == "@<anonymous>") |
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389 { |
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390 data_hid = H5Dopen (group_hid, "fcn"); |
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391 |
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392 if (data_hid < 0) |
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393 { |
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394 H5Gclose (group_hid); |
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395 return false; |
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396 } |
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397 |
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398 type_hid = H5Dget_type (data_hid); |
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399 type_class_hid = H5Tget_class (type_hid); |
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400 |
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401 if (type_class_hid != H5T_STRING) |
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402 { |
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403 H5Tclose (type_hid); |
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404 H5Dclose (data_hid); |
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405 H5Gclose (group_hid); |
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406 return false; |
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407 } |
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408 |
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409 space_hid = H5Dget_space (data_hid); |
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410 rank = H5Sget_simple_extent_ndims (space_hid); |
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411 |
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412 if (rank != 0) |
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413 { |
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414 H5Sclose (space_hid); |
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415 H5Tclose (type_hid); |
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416 H5Dclose (data_hid); |
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417 H5Gclose (group_hid); |
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418 return false; |
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419 } |
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420 |
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421 slen = H5Tget_size (type_hid); |
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422 if (slen < 0) |
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423 { |
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424 H5Sclose (space_hid); |
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425 H5Tclose (type_hid); |
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426 H5Dclose (data_hid); |
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427 H5Gclose (group_hid); |
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428 return false; |
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429 } |
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430 |
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431 OCTAVE_LOCAL_BUFFER (char, fcn_tmp, slen); |
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432 |
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433 // create datatype for (null-terminated) string to read into: |
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434 st_id = H5Tcopy (H5T_C_S1); |
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435 H5Tset_size (st_id, slen); |
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436 |
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437 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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438 X_CAST (void *, fcn_tmp)) < 0) |
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439 { |
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440 H5Sclose (space_hid); |
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441 H5Tclose (type_hid); |
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442 H5Gclose (group_hid); |
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443 return false; |
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444 } |
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445 H5Dclose (data_hid); |
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446 H5Tclose (st_id); |
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447 |
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448 int parse_status; |
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449 octave_value anon_fcn_handle = eval_string (fcn_tmp, true, parse_status); |
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450 |
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4989
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451 if (parse_status == 0) |
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452 { |
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453 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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454 if (fh) |
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455 fcn = fh->fcn; |
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456 else |
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457 return false; |
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458 } |
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459 else |
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460 return false; |
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4988
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461 } |
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462 else |
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463 { |
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464 fcn = lookup_function (nm); |
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465 if (! fcn.is_function ()) |
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466 return false; |
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467 } |
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468 |
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469 return true; |
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470 } |
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471 #endif |
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472 |
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4343
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473 void |
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474 octave_fcn_handle::print (std::ostream& os, bool pr_as_read_syntax) const |
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475 { |
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476 print_raw (os, pr_as_read_syntax); |
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477 newline (os); |
|
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478 } |
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479 |
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480 void |
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481 octave_fcn_handle::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
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482 { |
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4980
|
483 bool printed = false; |
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484 |
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485 if (nm == "@<anonymous>") |
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486 { |
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487 tree_print_code tpc (os); |
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488 |
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4989
|
489 // FCN is const because this member function is, so we can't |
|
4980
|
490 // use it to call user_function_value, so we make a copy first. |
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491 |
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492 octave_value ftmp = fcn; |
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493 |
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494 octave_user_function *f = ftmp.user_function_value (); |
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495 |
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496 if (f) |
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497 { |
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498 tree_parameter_list *p = f->parameter_list (); |
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499 |
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500 os << "@("; |
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501 |
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502 if (p) |
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503 p->accept (tpc); |
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504 |
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505 os << ") "; |
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506 |
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507 tree_statement_list *b = f->body (); |
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508 |
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509 if (b) |
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510 { |
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511 assert (b->length () == 1); |
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512 |
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513 tree_statement *s = b->front (); |
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514 |
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515 if (s) |
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516 { |
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517 if (s->is_expression ()) |
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518 { |
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519 tree_expression *e = s->expression (); |
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520 |
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521 if (e) |
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522 { |
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523 if (e->is_assignment_expression ()) |
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524 { |
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525 // The parser builds an assignment to |
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526 // __retval__, and we don't want to |
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527 // display that part. |
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528 |
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529 tree_simple_assignment *tsa |
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530 = reinterpret_cast <tree_simple_assignment *> (e); |
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531 tree_expression *rhs = tsa->right_hand_side (); |
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532 |
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533 if (rhs) |
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534 rhs->accept (tpc); |
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535 } |
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536 else |
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537 e->accept (tpc); |
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538 } |
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539 } |
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540 else |
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541 { |
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542 tree_command *c = s->command (); |
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543 |
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544 tpc.suspend_newline (); |
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545 c->accept (tpc); |
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546 tpc.resume_newline (); |
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547 } |
|
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548 } |
|
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549 } |
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550 |
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551 printed = true; |
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552 } |
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553 } |
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554 |
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555 if (! printed) |
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556 octave_print_internal (os, nm, pr_as_read_syntax, |
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557 current_print_indent_level ()); |
|
4343
|
558 } |
|
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559 |
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560 octave_value |
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561 make_fcn_handle (const std::string& nm) |
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|
562 { |
|
|
563 octave_value retval; |
|
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564 |
|
4930
|
565 octave_value f = lookup_function (nm); |
|
4343
|
566 |
|
4930
|
567 if (f.is_function ()) |
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|
568 retval = octave_value (new octave_fcn_handle (f, nm)); |
|
4343
|
569 else |
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|
570 error ("error creating function handle \"@%s\"", nm.c_str ()); |
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|
571 |
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|
572 return retval; |
|
|
573 } |
|
|
574 |
|
4933
|
575 DEFUN (functions, args, , |
|
4343
|
576 "-*- texinfo -*-\n\ |
|
4933
|
577 @deftypefn {Built-in Function} {} functions (@var{fcn_handle})\n\ |
|
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578 Return a struct containing information about the function handle\n\ |
|
|
579 @var{fcn_handle}.\n\ |
|
|
580 @end deftypefn") |
|
4343
|
581 { |
|
|
582 octave_value retval; |
|
|
583 |
|
4933
|
584 if (args.length () == 1) |
|
4343
|
585 { |
|
4933
|
586 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
|
4343
|
587 |
|
|
588 if (! error_state) |
|
|
589 { |
|
4933
|
590 octave_function *fcn = fh ? fh->function_value (true) : 0; |
|
4343
|
591 |
|
4933
|
592 if (fcn) |
|
4930
|
593 { |
|
4933
|
594 Octave_map m; |
|
4649
|
595 |
|
4933
|
596 std::string fh_nm = fh->fcn_name (); |
|
|
597 |
|
4978
|
598 m.assign ("function", fh_nm); |
|
4343
|
599 |
|
4933
|
600 if (fcn->is_nested_function ()) |
|
|
601 m.assign ("type", "subfunction"); |
|
|
602 else |
|
|
603 m.assign ("type", "simple"); |
|
|
604 |
|
|
605 std::string nm = fcn->fcn_file_name (); |
|
4343
|
606 |
|
4933
|
607 if (nm.empty ()) |
|
4935
|
608 { |
|
|
609 if (fh_nm == "@<anonymous>") |
|
|
610 m.assign ("file", "none"); |
|
|
611 else |
|
|
612 m.assign ("file", "built-in function"); |
|
|
613 } |
|
4343
|
614 else |
|
4933
|
615 m.assign ("file", nm); |
|
|
616 |
|
|
617 retval = m; |
|
4343
|
618 } |
|
|
619 else |
|
4933
|
620 error ("functions: invalid function handle object"); |
|
4343
|
621 } |
|
|
622 else |
|
4933
|
623 error ("functions: argument must be a function handle object"); |
|
4343
|
624 } |
|
|
625 else |
|
4933
|
626 print_usage ("functions"); |
|
4343
|
627 |
|
|
628 return retval; |
|
|
629 } |
|
|
630 |
|
4933
|
631 DEFUN (func2str, args, , |
|
4343
|
632 "-*- texinfo -*-\n\ |
|
4933
|
633 @deftypefn {Built-in Function} {} func2str (@var{fcn_handle})\n\ |
|
|
634 Return a string containing the name of the function referenced by\n\ |
|
|
635 the function handle @var{fcn_handle}.\n\ |
|
|
636 @end deftypefn") |
|
4343
|
637 { |
|
|
638 octave_value retval; |
|
|
639 |
|
4933
|
640 if (args.length () == 1) |
|
4930
|
641 { |
|
4933
|
642 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
|
4930
|
643 |
|
4933
|
644 if (! error_state && fh) |
|
|
645 { |
|
|
646 std::string fh_nm = fh->fcn_name (); |
|
4978
|
647 retval = fh_nm; |
|
4933
|
648 } |
|
4343
|
649 else |
|
4933
|
650 error ("func2str: expecting valid function handle as first argument"); |
|
4343
|
651 } |
|
|
652 else |
|
4933
|
653 print_usage ("func2str"); |
|
4343
|
654 |
|
|
655 return retval; |
|
|
656 } |
|
|
657 |
|
4933
|
658 DEFUN (str2func, args, , |
|
4343
|
659 "-*- texinfo -*-\n\ |
|
4933
|
660 @deftypefn {Built-in Function} {} str2func (@var{fcn_name})\n\ |
|
|
661 Return a function handle constructed from the string @var{fcn_name}.\n\ |
|
|
662 @end deftypefn") |
|
4343
|
663 { |
|
|
664 octave_value retval; |
|
|
665 |
|
4933
|
666 if (args.length () == 1) |
|
4343
|
667 { |
|
4933
|
668 std::string nm = args(0).string_value (); |
|
4343
|
669 |
|
4933
|
670 if (! error_state) |
|
|
671 retval = make_fcn_handle (nm); |
|
4343
|
672 else |
|
4933
|
673 error ("str2func: expecting string as first argument"); |
|
4343
|
674 } |
|
|
675 else |
|
4933
|
676 print_usage ("str2func"); |
|
4343
|
677 |
|
|
678 return retval; |
|
|
679 } |
|
|
680 |
|
|
681 /* |
|
|
682 ;;; Local Variables: *** |
|
|
683 ;;; mode: C++ *** |
|
|
684 ;;; End: *** |
|
|
685 */ |
