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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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5164
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28 #include <vector> |
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4343
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29 |
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30 #include "defun.h" |
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4654
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31 #include "error.h" |
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32 #include "gripes.h" |
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4343
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33 #include "oct-map.h" |
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34 #include "ov-base.h" |
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35 #include "ov-fcn-handle.h" |
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4980
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36 #include "ov-usr-fcn.h" |
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4343
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37 #include "pr-output.h" |
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4980
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38 #include "pt-pr-code.h" |
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39 #include "pt-misc.h" |
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40 #include "pt-stmt.h" |
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41 #include "pt-cmd.h" |
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42 #include "pt-exp.h" |
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43 #include "pt-assign.h" |
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4343
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44 #include "variables.h" |
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4988
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45 #include "parse.h" |
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46 |
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47 #include "byte-swap.h" |
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48 #include "ls-oct-ascii.h" |
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49 #include "ls-hdf5.h" |
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50 #include "ls-utils.h" |
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4343
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51 |
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52 DEFINE_OCTAVE_ALLOCATOR (octave_fcn_handle); |
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53 |
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4612
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54 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_fcn_handle, |
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55 "function handle", |
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56 "function handle"); |
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4343
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57 |
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4924
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58 octave_value_list |
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59 octave_fcn_handle::subsref (const std::string& type, |
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60 const std::list<octave_value_list>& idx, |
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61 int nargout) |
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62 { |
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63 octave_value_list retval; |
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64 |
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65 switch (type[0]) |
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66 { |
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67 case '(': |
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68 { |
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69 octave_function *f = function_value (); |
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70 retval = f->subsref (type, idx, nargout); |
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71 } |
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72 break; |
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73 |
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74 |
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75 case '{': |
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76 case '.': |
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77 { |
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4930
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78 std::string typ_nm = type_name (); |
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79 error ("%s cannot be indexed with %c", typ_nm.c_str (), type[0]); |
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4924
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80 } |
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81 break; |
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82 |
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83 default: |
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84 panic_impossible (); |
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85 } |
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86 |
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87 // XXX FIXME XXX -- perhaps there should be an |
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88 // octave_value_list::next_subsref member function? See also |
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89 // octave_builtin::subsref. |
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90 |
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91 if (idx.size () > 1) |
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4994
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92 retval = retval(0).next_subsref (nargout, type, idx); |
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93 |
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94 return retval; |
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95 } |
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96 |
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97 bool |
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98 octave_fcn_handle::save_ascii (std::ostream& os, bool&, bool) |
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99 { |
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100 os << nm << "\n"; |
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101 |
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102 if (nm == "@<anonymous>") |
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103 { |
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104 print_raw (os, true); |
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105 os << "\n"; |
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106 } |
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107 |
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108 return true; |
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109 } |
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110 |
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111 bool |
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112 octave_fcn_handle::load_ascii (std::istream& is) |
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113 { |
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114 is >> nm; |
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115 |
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116 if (nm == "@<anonymous>") |
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117 { |
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118 char c; |
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119 OSSTREAM buf; |
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120 |
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4989
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121 // Skip preceeding newline(s). |
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122 while (is.get (c) && c == '\n') |
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123 /* do nothing */; |
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124 |
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125 if (is) |
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126 { |
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127 buf << c; |
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128 |
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129 // Get a line of text whitespace characters included, leaving |
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130 // newline in the stream. |
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131 |
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4988
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132 while (is.peek () != '\n') |
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133 { |
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134 is.get (c); |
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135 if (! is) |
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136 break; |
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137 buf << c; |
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138 } |
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139 } |
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140 |
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141 buf << OSSTREAM_ENDS; |
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142 |
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143 int parse_status; |
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144 octave_value anon_fcn_handle = eval_string (OSSTREAM_STR (buf), |
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145 true, parse_status); |
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146 OSSTREAM_FREEZE (buf); |
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147 |
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4989
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148 if (parse_status == 0) |
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149 { |
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150 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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151 if (fh) |
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152 fcn = fh->fcn; |
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153 else |
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154 return false; |
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155 } |
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156 else |
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157 return false; |
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4988
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158 } |
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159 else |
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160 { |
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161 fcn = lookup_function (nm); |
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162 if (! fcn.is_function ()) |
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163 return false; |
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164 } |
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165 |
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166 return true; |
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167 } |
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168 |
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169 bool |
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170 octave_fcn_handle::save_binary (std::ostream& os, bool&) |
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171 { |
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172 FOUR_BYTE_INT tmp = nm.length (); |
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173 os.write (X_CAST (char *, &tmp), 4); |
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174 os.write (nm.c_str (), nm.length ()); |
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175 if (nm == "@<anonymous>") |
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176 { |
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177 OSSTREAM buf; |
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178 print_raw (buf, true); |
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179 std::string stmp = OSSTREAM_STR (buf); |
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180 OSSTREAM_FREEZE (buf); |
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181 tmp = stmp.length (); |
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182 os.write (X_CAST (char *, &tmp), 4); |
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183 os.write (stmp.c_str (), stmp.length ()); |
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184 } |
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185 return true; |
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186 } |
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187 |
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188 bool |
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189 octave_fcn_handle::load_binary (std::istream& is, bool swap, |
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190 oct_mach_info::float_format) |
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191 { |
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192 FOUR_BYTE_INT tmp; |
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193 if (! is.read (X_CAST (char *, &tmp), 4)) |
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194 return false; |
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195 if (swap) |
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196 swap_bytes<4> (&tmp); |
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197 |
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198 OCTAVE_LOCAL_BUFFER (char, ctmp1, tmp+1); |
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199 is.read (ctmp1, tmp); |
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200 nm = std::string (ctmp1); |
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201 |
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202 if (! is) |
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203 return false; |
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204 |
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205 if (nm == "@<anonymous>") |
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206 { |
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207 if (! is.read (X_CAST (char *, &tmp), 4)) |
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208 return false; |
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209 if (swap) |
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210 swap_bytes<4> (&tmp); |
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211 |
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212 OCTAVE_LOCAL_BUFFER (char, ctmp2, tmp+1); |
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213 is.read (ctmp2, tmp); |
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214 |
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215 int parse_status; |
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216 octave_value anon_fcn_handle = eval_string (ctmp2, true, parse_status); |
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217 |
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218 if (parse_status == 0) |
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219 { |
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220 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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221 if (fh) |
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222 fcn = fh->fcn; |
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223 else |
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224 return false; |
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225 } |
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226 else |
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227 return false; |
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228 } |
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229 else |
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230 { |
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231 fcn = lookup_function (nm); |
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232 if (! fcn.is_function ()) |
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233 return false; |
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234 } |
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235 return true; |
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236 } |
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237 |
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238 #if defined (HAVE_HDF5) |
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239 bool |
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240 octave_fcn_handle::save_hdf5 (hid_t loc_id, const char *name, |
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241 bool /* save_as_floats */) |
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242 { |
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243 hid_t group_hid = -1; |
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244 group_hid = H5Gcreate (loc_id, name, 0); |
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245 if (group_hid < 0 ) return false; |
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246 |
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247 hid_t space_hid = -1, data_hid = -1, type_hid = -1;; |
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248 bool retval = true; |
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249 |
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250 // attach the type of the variable |
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251 type_hid = H5Tcopy (H5T_C_S1); |
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252 H5Tset_size (type_hid, nm.length () + 1); |
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253 if (type_hid < 0) |
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254 { |
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255 H5Gclose (group_hid); |
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256 return false; |
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257 } |
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258 |
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259 OCTAVE_LOCAL_BUFFER (hsize_t, hdims, 2); |
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260 hdims[0] = 0; |
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261 hdims[1] = 0; |
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262 space_hid = H5Screate_simple (0 , hdims, (hsize_t*) 0); |
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263 if (space_hid < 0) |
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264 { |
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265 H5Tclose (type_hid); |
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266 H5Gclose (group_hid); |
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267 return false; |
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268 } |
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269 |
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270 data_hid = H5Dcreate (group_hid, "nm", type_hid, space_hid, H5P_DEFAULT); |
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271 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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272 H5P_DEFAULT, |
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4990
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273 X_CAST (void *, nm.c_str ())) < 0) |
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4988
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274 { |
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275 H5Sclose (space_hid); |
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276 H5Tclose (type_hid); |
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277 H5Gclose (group_hid); |
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278 return false; |
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279 } |
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280 H5Dclose (data_hid); |
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281 |
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282 if (nm == "@<anonymous>") |
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283 { |
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284 OSSTREAM buf; |
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285 print_raw (buf, true); |
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286 std::string stmp = OSSTREAM_STR (buf); |
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287 OSSTREAM_FREEZE (buf); |
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288 |
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289 // attach the type of the variable |
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290 H5Tset_size (type_hid, stmp.length () + 1); |
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291 if (type_hid < 0) |
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292 { |
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293 H5Gclose (group_hid); |
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294 return false; |
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295 } |
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296 |
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297 data_hid = H5Dcreate (group_hid, "fcn", type_hid, space_hid, |
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298 H5P_DEFAULT); |
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299 if (data_hid < 0 || H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, |
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4989
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300 H5P_DEFAULT, |
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4990
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301 X_CAST (void *, stmp.c_str ())) < 0) |
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4988
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302 { |
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303 H5Sclose (space_hid); |
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304 H5Tclose (type_hid); |
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305 H5Gclose (group_hid); |
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306 return false; |
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307 } |
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308 |
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309 H5Dclose (data_hid); |
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310 } |
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311 |
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312 H5Sclose (space_hid); |
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313 H5Tclose (type_hid); |
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314 H5Gclose (group_hid); |
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315 |
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316 return retval; |
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317 } |
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318 |
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319 bool |
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320 octave_fcn_handle::load_hdf5 (hid_t loc_id, const char *name, |
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321 bool /* have_h5giterate_bug */) |
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322 { |
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323 hid_t group_hid, data_hid, space_hid, type_hid, type_class_hid, st_id; |
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324 hsize_t rank; |
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325 int slen; |
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326 |
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327 group_hid = H5Gopen (loc_id, name); |
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328 if (group_hid < 0 ) return false; |
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329 |
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330 data_hid = H5Dopen (group_hid, "nm"); |
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331 |
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332 if (data_hid < 0) |
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333 { |
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334 H5Gclose (group_hid); |
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335 return false; |
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336 } |
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337 |
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338 type_hid = H5Dget_type (data_hid); |
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339 type_class_hid = H5Tget_class (type_hid); |
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340 |
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341 if (type_class_hid != H5T_STRING) |
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342 { |
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343 H5Tclose (type_hid); |
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344 H5Dclose (data_hid); |
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345 H5Gclose (group_hid); |
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346 return false; |
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347 } |
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348 |
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349 space_hid = H5Dget_space (data_hid); |
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350 rank = H5Sget_simple_extent_ndims (space_hid); |
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351 |
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352 if (rank != 0) |
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353 { |
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354 H5Sclose (space_hid); |
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355 H5Tclose (type_hid); |
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356 H5Dclose (data_hid); |
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357 H5Gclose (group_hid); |
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358 return false; |
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359 } |
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360 |
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361 slen = H5Tget_size (type_hid); |
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362 if (slen < 0) |
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363 { |
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364 H5Sclose (space_hid); |
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365 H5Tclose (type_hid); |
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366 H5Dclose (data_hid); |
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367 H5Gclose (group_hid); |
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368 return false; |
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369 } |
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370 |
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371 OCTAVE_LOCAL_BUFFER (char, nm_tmp, slen); |
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372 |
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373 // create datatype for (null-terminated) string to read into: |
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374 st_id = H5Tcopy (H5T_C_S1); |
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375 H5Tset_size (st_id, slen); |
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376 |
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377 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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378 X_CAST (void *, nm_tmp)) < 0) |
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379 { |
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380 H5Sclose (space_hid); |
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381 H5Tclose (type_hid); |
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382 H5Gclose (group_hid); |
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383 return false; |
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384 } |
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385 H5Tclose (st_id); |
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386 H5Dclose (data_hid); |
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387 nm = nm_tmp; |
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388 |
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389 if (nm == "@<anonymous>") |
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390 { |
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391 data_hid = H5Dopen (group_hid, "fcn"); |
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392 |
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393 if (data_hid < 0) |
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394 { |
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395 H5Gclose (group_hid); |
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396 return false; |
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397 } |
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398 |
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399 type_hid = H5Dget_type (data_hid); |
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400 type_class_hid = H5Tget_class (type_hid); |
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401 |
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402 if (type_class_hid != H5T_STRING) |
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403 { |
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404 H5Tclose (type_hid); |
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405 H5Dclose (data_hid); |
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406 H5Gclose (group_hid); |
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407 return false; |
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408 } |
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409 |
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410 space_hid = H5Dget_space (data_hid); |
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411 rank = H5Sget_simple_extent_ndims (space_hid); |
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412 |
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413 if (rank != 0) |
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414 { |
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415 H5Sclose (space_hid); |
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416 H5Tclose (type_hid); |
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417 H5Dclose (data_hid); |
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418 H5Gclose (group_hid); |
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419 return false; |
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420 } |
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421 |
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422 slen = H5Tget_size (type_hid); |
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423 if (slen < 0) |
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424 { |
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425 H5Sclose (space_hid); |
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426 H5Tclose (type_hid); |
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427 H5Dclose (data_hid); |
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428 H5Gclose (group_hid); |
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429 return false; |
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430 } |
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431 |
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432 OCTAVE_LOCAL_BUFFER (char, fcn_tmp, slen); |
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433 |
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434 // create datatype for (null-terminated) string to read into: |
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435 st_id = H5Tcopy (H5T_C_S1); |
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436 H5Tset_size (st_id, slen); |
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437 |
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438 if (H5Dread (data_hid, st_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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439 X_CAST (void *, fcn_tmp)) < 0) |
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440 { |
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441 H5Sclose (space_hid); |
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442 H5Tclose (type_hid); |
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443 H5Gclose (group_hid); |
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444 return false; |
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445 } |
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446 H5Dclose (data_hid); |
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447 H5Tclose (st_id); |
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448 |
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449 int parse_status; |
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450 octave_value anon_fcn_handle = eval_string (fcn_tmp, true, parse_status); |
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451 |
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4989
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452 if (parse_status == 0) |
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453 { |
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454 octave_fcn_handle *fh = anon_fcn_handle.fcn_handle_value (); |
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455 if (fh) |
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456 fcn = fh->fcn; |
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457 else |
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458 return false; |
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459 } |
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460 else |
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461 return false; |
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4988
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462 } |
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463 else |
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464 { |
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465 fcn = lookup_function (nm); |
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466 if (! fcn.is_function ()) |
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467 return false; |
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468 } |
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469 |
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470 return true; |
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471 } |
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472 #endif |
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473 |
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4343
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474 void |
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475 octave_fcn_handle::print (std::ostream& os, bool pr_as_read_syntax) const |
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476 { |
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477 print_raw (os, pr_as_read_syntax); |
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478 newline (os); |
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479 } |
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480 |
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481 void |
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482 octave_fcn_handle::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
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483 { |
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4980
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484 bool printed = false; |
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485 |
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486 if (nm == "@<anonymous>") |
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487 { |
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488 tree_print_code tpc (os); |
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489 |
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4989
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490 // FCN is const because this member function is, so we can't |
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4980
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491 // use it to call user_function_value, so we make a copy first. |
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492 |
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493 octave_value ftmp = fcn; |
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494 |
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495 octave_user_function *f = ftmp.user_function_value (); |
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496 |
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497 if (f) |
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498 { |
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499 tree_parameter_list *p = f->parameter_list (); |
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500 |
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501 os << "@("; |
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502 |
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503 if (p) |
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504 p->accept (tpc); |
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505 |
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506 os << ") "; |
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507 |
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508 tree_statement_list *b = f->body (); |
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509 |
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510 if (b) |
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511 { |
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512 assert (b->length () == 1); |
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513 |
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514 tree_statement *s = b->front (); |
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515 |
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516 if (s) |
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517 { |
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518 if (s->is_expression ()) |
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519 { |
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520 tree_expression *e = s->expression (); |
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521 |
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522 if (e) |
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523 { |
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524 if (e->is_assignment_expression ()) |
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525 { |
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526 // The parser builds an assignment to |
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527 // __retval__, and we don't want to |
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528 // display that part. |
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529 |
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530 tree_simple_assignment *tsa |
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531 = reinterpret_cast <tree_simple_assignment *> (e); |
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532 tree_expression *rhs = tsa->right_hand_side (); |
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533 |
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534 if (rhs) |
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535 rhs->accept (tpc); |
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536 } |
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537 else |
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538 e->accept (tpc); |
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539 } |
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540 } |
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541 else |
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542 { |
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543 tree_command *c = s->command (); |
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544 |
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545 tpc.suspend_newline (); |
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546 c->accept (tpc); |
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547 tpc.resume_newline (); |
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548 } |
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549 } |
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550 } |
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551 |
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552 printed = true; |
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553 } |
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554 } |
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555 |
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556 if (! printed) |
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557 octave_print_internal (os, nm, pr_as_read_syntax, |
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558 current_print_indent_level ()); |
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4343
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559 } |
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560 |
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561 octave_value |
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562 make_fcn_handle (const std::string& nm) |
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563 { |
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564 octave_value retval; |
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565 |
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4930
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566 octave_value f = lookup_function (nm); |
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4343
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567 |
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4930
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568 if (f.is_function ()) |
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569 retval = octave_value (new octave_fcn_handle (f, nm)); |
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4343
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570 else |
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571 error ("error creating function handle \"@%s\"", nm.c_str ()); |
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572 |
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573 return retval; |
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574 } |
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575 |
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4933
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576 DEFUN (functions, args, , |
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4343
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577 "-*- texinfo -*-\n\ |
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4933
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578 @deftypefn {Built-in Function} {} functions (@var{fcn_handle})\n\ |
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579 Return a struct containing information about the function handle\n\ |
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580 @var{fcn_handle}.\n\ |
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581 @end deftypefn") |
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4343
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582 { |
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583 octave_value retval; |
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584 |
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4933
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585 if (args.length () == 1) |
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4343
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586 { |
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4933
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587 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
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4343
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588 |
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589 if (! error_state) |
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590 { |
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4933
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591 octave_function *fcn = fh ? fh->function_value (true) : 0; |
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4343
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592 |
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4933
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593 if (fcn) |
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4930
|
594 { |
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4933
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595 Octave_map m; |
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4649
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596 |
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4933
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597 std::string fh_nm = fh->fcn_name (); |
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598 |
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4978
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599 m.assign ("function", fh_nm); |
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4343
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600 |
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4933
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601 if (fcn->is_nested_function ()) |
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602 m.assign ("type", "subfunction"); |
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603 else |
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604 m.assign ("type", "simple"); |
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605 |
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606 std::string nm = fcn->fcn_file_name (); |
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4343
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607 |
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4933
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608 if (nm.empty ()) |
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4935
|
609 { |
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610 if (fh_nm == "@<anonymous>") |
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611 m.assign ("file", "none"); |
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612 else |
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613 m.assign ("file", "built-in function"); |
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614 } |
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4343
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615 else |
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4933
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616 m.assign ("file", nm); |
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617 |
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618 retval = m; |
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4343
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619 } |
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620 else |
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4933
|
621 error ("functions: invalid function handle object"); |
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4343
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622 } |
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623 else |
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4933
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624 error ("functions: argument must be a function handle object"); |
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4343
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625 } |
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626 else |
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4933
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627 print_usage ("functions"); |
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4343
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628 |
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629 return retval; |
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630 } |
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631 |
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4933
|
632 DEFUN (func2str, args, , |
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4343
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633 "-*- texinfo -*-\n\ |
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4933
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634 @deftypefn {Built-in Function} {} func2str (@var{fcn_handle})\n\ |
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635 Return a string containing the name of the function referenced by\n\ |
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636 the function handle @var{fcn_handle}.\n\ |
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637 @end deftypefn") |
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4343
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638 { |
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639 octave_value retval; |
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640 |
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4933
|
641 if (args.length () == 1) |
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4930
|
642 { |
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4933
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643 octave_fcn_handle *fh = args(0).fcn_handle_value (); |
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4930
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644 |
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4933
|
645 if (! error_state && fh) |
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646 { |
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647 std::string fh_nm = fh->fcn_name (); |
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4978
|
648 retval = fh_nm; |
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4933
|
649 } |
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4343
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650 else |
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4933
|
651 error ("func2str: expecting valid function handle as first argument"); |
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4343
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652 } |
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653 else |
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4933
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654 print_usage ("func2str"); |
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4343
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655 |
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656 return retval; |
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657 } |
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658 |
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4933
|
659 DEFUN (str2func, args, , |
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4343
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660 "-*- texinfo -*-\n\ |
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4933
|
661 @deftypefn {Built-in Function} {} str2func (@var{fcn_name})\n\ |
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662 Return a function handle constructed from the string @var{fcn_name}.\n\ |
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663 @end deftypefn") |
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4343
|
664 { |
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665 octave_value retval; |
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666 |
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4933
|
667 if (args.length () == 1) |
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4343
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668 { |
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4933
|
669 std::string nm = args(0).string_value (); |
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4343
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670 |
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4933
|
671 if (! error_state) |
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672 retval = make_fcn_handle (nm); |
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4343
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673 else |
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4933
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674 error ("str2func: expecting string as first argument"); |
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4343
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675 } |
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676 else |
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4933
|
677 print_usage ("str2func"); |
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4343
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678 |
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679 return retval; |
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680 } |
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681 |
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682 /* |
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683 ;;; Local Variables: *** |
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684 ;;; mode: C++ *** |
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685 ;;; End: *** |
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686 */ |
