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