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7338
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1 /* |
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2 |
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3 Copyright (C) 2007 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 |
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30 #include "Array-util.h" |
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31 #include "byte-swap.h" |
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32 |
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33 #include "Cell.h" |
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34 #include "defun.h" |
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35 #include "error.h" |
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36 #include "gripes.h" |
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37 #include "load-path.h" |
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38 #include "ls-hdf5.h" |
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39 #include "ls-oct-ascii.h" |
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40 #include "ls-oct-binary.h" |
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41 #include "ls-utils.h" |
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42 #include "oct-lvalue.h" |
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43 #include "ov-class.h" |
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44 #include "ov-fcn.h" |
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45 #include "pager.h" |
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46 #include "parse.h" |
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47 #include "pr-output.h" |
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48 #include "toplev.h" |
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49 #include "unwind-prot.h" |
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50 #include "variables.h" |
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51 |
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52 DEFINE_OCTAVE_ALLOCATOR(octave_class); |
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53 |
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54 int octave_class::t_id (-1); |
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55 |
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56 const std::string octave_class::t_name ("class"); |
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57 |
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58 void |
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59 octave_class::register_type (void) |
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60 { |
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61 t_id = octave_value_typeinfo::register_type |
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62 (octave_class::t_name, "<unknown>", octave_value (new octave_class ())); |
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63 } |
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64 |
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65 Cell |
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66 octave_class::dotref (const octave_value_list& idx) |
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67 { |
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68 Cell retval; |
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69 |
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70 assert (idx.length () == 1); |
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71 |
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72 std::string nm = idx(0).string_value (); |
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73 |
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74 Octave_map::const_iterator p = map.seek (nm); |
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75 |
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76 if (p != map.end ()) |
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77 retval = map.contents (p); |
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78 else |
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79 error ("class has no member `%s'", nm.c_str ()); |
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80 |
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81 return retval; |
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82 } |
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83 |
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84 static void |
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85 gripe_invalid_index (void) |
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86 { |
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87 error ("invalid index for class"); |
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88 } |
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89 |
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90 static void |
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91 gripe_invalid_index_for_assignment (void) |
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92 { |
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93 error ("invalid index for class assignment"); |
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94 } |
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95 |
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96 static void |
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97 gripe_invalid_index_type (const std::string& nm, char t) |
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98 { |
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99 error ("%s cannot be indexed with %c", nm.c_str (), t); |
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100 } |
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101 |
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102 static void |
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103 gripe_failed_assignment (void) |
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104 { |
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105 error ("assignment to class element failed"); |
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106 } |
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107 |
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108 static inline octave_value_list |
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109 sanitize (const octave_value_list& ovl) |
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110 { |
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111 octave_value_list retval = ovl; |
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112 |
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113 for (octave_idx_type i = 0; i < ovl.length (); i++) |
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114 { |
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115 if (retval(i).is_magic_colon ()) |
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116 retval(i) = ":"; |
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117 } |
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118 |
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119 return retval; |
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120 } |
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121 |
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122 static inline octave_value |
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123 make_idx_args (const std::string& type, |
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124 const std::list<octave_value_list>& idx, |
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125 const std::string& who) |
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126 { |
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127 octave_value retval; |
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128 |
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129 size_t len = type.length (); |
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130 |
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131 if (len == idx.size ()) |
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132 { |
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133 Cell type_field (len, 1); |
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134 Cell subs_field (len, 1); |
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135 |
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136 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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137 |
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138 for (size_t i = 0; i < len; i++) |
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139 { |
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140 char t = type[i]; |
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141 |
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142 switch (t) |
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143 { |
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144 case '(': |
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145 type_field(i) = "()"; |
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146 subs_field(i) = Cell (sanitize (*p++)); |
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147 break; |
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148 |
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149 case '{': |
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150 type_field(i) = "{}"; |
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151 subs_field(i) = Cell (sanitize (*p++)); |
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152 break; |
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153 |
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154 case '.': |
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155 { |
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156 type_field(i) = "."; |
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157 |
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158 octave_value_list vlist = *p++; |
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159 |
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160 if (vlist.length () == 1) |
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161 { |
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162 octave_value val = vlist(0); |
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163 |
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164 if (val.is_string ()) |
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165 subs_field(i) = val; |
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166 else |
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167 { |
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168 error ("expecting character string argument for `.' index"); |
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169 return retval; |
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170 } |
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171 } |
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172 else |
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173 { |
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174 error ("expecting single argument for `.' index"); |
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175 return retval; |
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176 } |
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177 } |
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178 break; |
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179 |
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180 default: |
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181 panic_impossible (); |
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182 break; |
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183 } |
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184 } |
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185 |
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186 Octave_map m; |
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187 |
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188 m.assign ("type", type_field); |
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189 m.assign ("subs", subs_field); |
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190 |
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191 retval = m; |
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192 } |
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193 else |
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194 error ("invalid index for %s", who.c_str ()); |
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195 |
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196 return retval; |
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197 } |
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198 |
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199 octave_value_list |
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200 octave_class::subsref (const std::string& type, |
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201 const std::list<octave_value_list>& idx, |
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202 int nargout) |
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203 { |
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204 octave_value_list retval; |
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205 |
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206 if (in_class_method ()) |
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207 { |
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208 // FIXME -- this block of code is the same as the body of |
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209 // octave_struct::subsref. Maybe it could be shared instead of |
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210 // duplicated. |
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211 |
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212 int skip = 1; |
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213 |
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214 switch (type[0]) |
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215 { |
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216 case '(': |
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217 { |
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218 if (type.length () > 1 && type[1] == '.') |
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219 { |
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220 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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221 octave_value_list key_idx = *++p; |
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222 |
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223 Cell tmp = dotref (key_idx); |
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224 |
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225 if (! error_state) |
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226 { |
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227 Cell t = tmp.index (idx.front ()); |
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228 |
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229 retval(0) = (t.length () == 1) ? t(0) : octave_value (t, true); |
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230 |
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231 // We handled two index elements, so tell |
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232 // next_subsref to skip both of them. |
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233 |
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234 skip++; |
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235 } |
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236 } |
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237 else |
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238 retval(0) = map.index (idx.front ()); |
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239 } |
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240 break; |
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241 |
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242 case '.': |
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243 { |
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244 if (map.numel() > 0) |
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245 { |
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246 Cell t = dotref (idx.front ()); |
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247 |
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248 retval(0) = (t.length () == 1) ? t(0) : octave_value (t, true); |
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249 } |
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250 } |
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251 break; |
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252 |
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253 case '{': |
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254 gripe_invalid_index_type (type_name (), type[0]); |
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255 break; |
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256 |
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257 default: |
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258 panic_impossible (); |
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259 } |
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260 |
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261 // FIXME -- perhaps there should be an |
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262 // octave_value_list::next_subsref member function? See also |
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263 // octave_user_function::subsref. |
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264 |
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265 if (idx.size () > 1) |
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266 retval = retval(0).next_subsref (nargout, type, idx, skip); |
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267 } |
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268 else |
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269 { |
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270 octave_value meth = symbol_table::find_method ("subsref", class_name ()); |
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271 |
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272 if (meth.is_defined ()) |
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273 { |
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274 octave_value_list args; |
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275 |
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276 args(1) = make_idx_args (type, idx, "subsref"); |
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277 |
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278 if (error_state) |
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279 return octave_value_list (); |
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280 |
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281 count++; |
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282 args(0) = octave_value (this); |
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283 |
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284 return feval (meth.function_value (), args, nargout); |
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285 } |
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286 else |
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287 { |
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288 if (type.length () == 1 && type[0] == '(') |
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289 retval(0) = octave_value (map.index (idx.front ()), class_name ()); |
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290 else |
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291 gripe_invalid_index (); |
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292 } |
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293 } |
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294 |
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295 return retval; |
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296 } |
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297 |
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298 octave_value |
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299 octave_class::numeric_conv (const Cell& val, const std::string& type) |
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300 { |
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301 octave_value retval; |
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302 |
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303 if (val.length () == 1) |
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304 { |
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305 retval = val(0); |
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306 |
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307 if (type.length () > 0 && type[0] == '.' && ! retval.is_map ()) |
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308 retval = Octave_map (); |
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309 } |
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310 else |
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311 gripe_invalid_index_for_assignment (); |
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312 |
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313 return retval; |
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314 } |
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315 |
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316 octave_value |
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317 octave_class::subsasgn (const std::string& type, |
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318 const std::list<octave_value_list>& idx, |
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319 const octave_value& rhs) |
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320 { |
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321 octave_value retval; |
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322 |
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323 if (in_class_method ()) |
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324 { |
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325 // FIXME -- this block of code is the same as the body of |
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326 // octave_struct::subsasgn. Maybe it could be shared instead of |
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327 // duplicated. |
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328 |
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329 int n = type.length (); |
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330 |
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331 octave_value t_rhs = rhs; |
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332 |
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333 if (n > 1 && ! (type.length () == 2 && type[0] == '(' && type[1] == '.')) |
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334 { |
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335 switch (type[0]) |
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336 { |
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337 case '(': |
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338 { |
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339 if (type.length () > 1 && type[1] == '.') |
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340 { |
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341 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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342 octave_value_list t_idx = *p; |
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343 |
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344 octave_value_list key_idx = *++p; |
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345 |
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346 assert (key_idx.length () == 1); |
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347 |
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348 std::string key = key_idx(0).string_value (); |
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349 |
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350 octave_value u; |
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351 |
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352 if (! map.contains (key)) |
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353 u = octave_value::empty_conv (type.substr (2), rhs); |
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354 else |
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355 { |
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356 Cell map_val = map.contents (key); |
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357 |
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358 Cell map_elt = map_val.index (idx.front (), true); |
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359 |
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360 u = numeric_conv (map_elt, type.substr (2)); |
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361 } |
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362 |
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363 if (! error_state) |
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364 { |
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365 std::list<octave_value_list> next_idx (idx); |
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366 |
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367 // We handled two index elements, so subsasgn to |
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368 // needs to skip both of them. |
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369 |
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370 next_idx.erase (next_idx.begin ()); |
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371 next_idx.erase (next_idx.begin ()); |
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372 |
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373 u.make_unique (); |
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374 |
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375 t_rhs = u.subsasgn (type.substr (2), next_idx, rhs); |
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376 } |
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377 } |
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378 else |
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379 gripe_invalid_index_for_assignment (); |
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380 } |
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381 break; |
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382 |
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383 case '.': |
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384 { |
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385 octave_value_list key_idx = idx.front (); |
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386 |
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387 assert (key_idx.length () == 1); |
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388 |
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389 std::string key = key_idx(0).string_value (); |
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390 |
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391 octave_value u; |
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392 |
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393 if (! map.contains (key)) |
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394 u = octave_value::empty_conv (type.substr (1), rhs); |
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395 else |
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396 { |
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397 Cell map_val = map.contents (key); |
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398 |
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399 u = numeric_conv (map_val, type.substr (1)); |
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400 } |
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401 |
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402 if (! error_state) |
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403 { |
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404 std::list<octave_value_list> next_idx (idx); |
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405 |
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406 next_idx.erase (next_idx.begin ()); |
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407 |
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408 u.make_unique (); |
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409 |
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410 t_rhs = u.subsasgn (type.substr (1), next_idx, rhs); |
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411 } |
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412 } |
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413 break; |
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414 |
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415 case '{': |
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416 gripe_invalid_index_type (type_name (), type[0]); |
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417 break; |
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418 |
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419 default: |
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420 panic_impossible (); |
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421 } |
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422 } |
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423 |
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424 if (! error_state) |
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425 { |
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426 switch (type[0]) |
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427 { |
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428 case '(': |
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429 { |
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430 if (n > 1 && type[1] == '.') |
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431 { |
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432 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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433 octave_value_list key_idx = *++p; |
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434 |
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435 assert (key_idx.length () == 1); |
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436 |
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437 std::string key = key_idx(0).string_value (); |
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438 |
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439 if (! error_state) |
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440 { |
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441 map.assign (idx.front (), key, t_rhs); |
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442 |
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443 if (! error_state) |
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444 { |
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445 count++; |
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446 retval = octave_value (this); |
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447 } |
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448 else |
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449 gripe_failed_assignment (); |
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450 } |
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451 else |
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452 gripe_failed_assignment (); |
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453 } |
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454 else |
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455 { |
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456 if (t_rhs.is_map()) |
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457 { |
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458 Octave_map rhs_map = t_rhs.map_value (); |
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459 |
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460 if (! error_state) |
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461 { |
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462 map.assign (idx.front (), rhs_map); |
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463 |
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464 if (! error_state) |
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465 { |
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466 count++; |
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467 retval = octave_value (this); |
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468 } |
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469 else |
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470 gripe_failed_assignment (); |
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471 } |
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472 else |
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473 error ("invalid class assignment"); |
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474 } |
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475 else |
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476 { |
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477 if (t_rhs.is_empty()) |
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478 { |
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479 map.maybe_delete_elements (idx.front()); |
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480 |
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481 if (! error_state) |
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482 { |
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483 count++; |
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484 retval = octave_value (this); |
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485 } |
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486 else |
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487 gripe_failed_assignment (); |
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488 } |
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489 else |
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490 error ("invalid class assignment"); |
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491 } |
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492 } |
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493 } |
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494 break; |
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495 |
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496 case '.': |
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497 { |
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498 octave_value_list key_idx = idx.front (); |
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499 |
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500 assert (key_idx.length () == 1); |
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501 |
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502 std::string key = key_idx(0).string_value (); |
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503 |
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504 map.assign (key, t_rhs); |
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505 |
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506 if (! error_state) |
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507 { |
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508 count++; |
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509 retval = octave_value (this); |
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510 } |
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511 else |
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512 gripe_failed_assignment (); |
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513 } |
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514 break; |
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515 |
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516 case '{': |
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517 gripe_invalid_index_type (type_name (), type[0]); |
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518 break; |
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519 |
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520 default: |
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521 panic_impossible (); |
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522 } |
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523 } |
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524 else |
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525 gripe_failed_assignment (); |
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|
526 } |
|
|
527 else |
|
|
528 { |
|
|
529 octave_value meth = symbol_table::find_method ("subsasgn", class_name ()); |
|
|
530 |
|
|
531 if (meth.is_defined ()) |
|
|
532 { |
|
|
533 octave_value_list args; |
|
|
534 |
|
|
535 args(2) = rhs; |
|
|
536 |
|
|
537 args(1) = make_idx_args (type, idx, "subsasgn"); |
|
|
538 |
|
|
539 if (error_state) |
|
|
540 return octave_value_list (); |
|
|
541 |
|
|
542 count++; |
|
|
543 args(0) = octave_value (this); |
|
|
544 |
|
|
545 octave_value_list tmp = feval (meth.function_value (), args); |
|
|
546 |
|
|
547 // FIXME -- should the subsasgn method be able to return |
|
|
548 // more than one value? |
|
|
549 |
|
|
550 if (tmp.length () > 1) |
|
|
551 error ("expecting single return value from @%s/subsasgn", |
|
|
552 class_name().c_str ()); |
|
|
553 else |
|
|
554 retval = tmp(0); |
|
|
555 |
|
|
556 } |
|
|
557 else |
|
|
558 error ("no subsasgn method defined for class %s", |
|
|
559 class_name().c_str ()); |
|
|
560 } |
|
|
561 |
|
|
562 return retval; |
|
|
563 } |
|
|
564 |
|
|
565 size_t |
|
|
566 octave_class::byte_size (void) const |
|
|
567 { |
|
|
568 // Neglect the size of the fieldnames. |
|
|
569 |
|
|
570 size_t retval = 0; |
|
|
571 |
|
|
572 for (Octave_map::const_iterator p = map.begin (); p != map.end (); p++) |
|
|
573 { |
|
|
574 std::string key = map.key (p); |
|
|
575 |
|
|
576 octave_value val = octave_value (map.contents (p)); |
|
|
577 |
|
|
578 retval += val.byte_size (); |
|
|
579 } |
|
|
580 |
|
|
581 return retval; |
|
|
582 } |
|
|
583 |
|
|
584 Octave_map |
|
|
585 octave_class::map_value (void) const |
|
|
586 { |
|
|
587 Octave_map retval; |
|
|
588 gripe_wrong_type_arg ("octave_class::map_value()", type_name ()); |
|
|
589 return retval; |
|
|
590 } |
|
|
591 |
|
|
592 string_vector |
|
|
593 octave_class::map_keys (void) const |
|
|
594 { |
|
|
595 string_vector retval; |
|
|
596 gripe_wrong_type_arg ("octave_class::map_keys()", type_name ()); |
|
|
597 return retval; |
|
|
598 } |
|
|
599 |
|
|
600 void |
|
|
601 octave_class::print (std::ostream& os, bool) const |
|
|
602 { |
|
|
603 print_raw (os); |
|
|
604 } |
|
|
605 |
|
|
606 void |
|
|
607 octave_class::print_raw (std::ostream& os, bool) const |
|
|
608 { |
|
|
609 unwind_protect::begin_frame ("octave_class_print"); |
|
|
610 |
|
|
611 unwind_protect_int (Vstruct_levels_to_print); |
|
|
612 |
|
|
613 indent (os); |
|
|
614 os << " <class " << class_name () << ">"; |
|
|
615 newline (os); |
|
|
616 |
|
|
617 unwind_protect::run_frame ("octave_class_print"); |
|
|
618 } |
|
|
619 |
|
|
620 bool |
|
|
621 octave_class::print_name_tag (std::ostream& os, const std::string& name) const |
|
|
622 { |
|
|
623 bool retval = false; |
|
|
624 |
|
|
625 indent (os); |
|
|
626 os << name << " ="; |
|
|
627 newline (os); |
|
|
628 newline (os); |
|
|
629 |
|
|
630 return retval; |
|
|
631 } |
|
|
632 |
|
|
633 void |
|
|
634 octave_class::print_with_name (std::ostream&, const std::string& name, |
|
|
635 bool) const |
|
|
636 { |
|
|
637 if (! (evaluating_function_body && Vsilent_functions)) |
|
|
638 { |
|
|
639 octave_value fcn = symbol_table::find_method ("display", class_name ()); |
|
|
640 |
|
|
641 if (fcn.is_defined ()) |
|
|
642 { |
|
|
643 octave_value_list args; |
|
|
644 |
|
|
645 args(0) = octave_value (clone (), 1); |
|
|
646 |
|
|
647 string_vector arg_names (1); |
|
|
648 |
|
|
649 arg_names[0] = name; |
|
|
650 |
|
|
651 args.stash_name_tags (arg_names); |
|
|
652 |
|
|
653 feval (fcn.function_value (), args); |
|
|
654 } |
|
|
655 } |
|
|
656 } |
|
|
657 |
|
|
658 bool |
|
|
659 octave_class::save_ascii (std::ostream&, bool&) |
|
|
660 { |
|
|
661 gripe_wrong_type_arg ("octave_class::save_ascii()", type_name ()); |
|
|
662 return false; |
|
|
663 } |
|
|
664 |
|
|
665 bool |
|
|
666 octave_class::load_ascii (std::istream&) |
|
|
667 { |
|
|
668 gripe_wrong_type_arg ("octave_class::load_ascii()", type_name ()); |
|
|
669 return false; |
|
|
670 } |
|
|
671 |
|
|
672 bool |
|
|
673 octave_class::save_binary (std::ostream&, bool&) |
|
|
674 { |
|
|
675 gripe_wrong_type_arg ("octave_class::save_binary()", type_name ()); |
|
|
676 return false; |
|
|
677 } |
|
|
678 |
|
|
679 bool |
|
|
680 octave_class::load_binary (std::istream&, bool, |
|
|
681 oct_mach_info::float_format) |
|
|
682 { |
|
|
683 gripe_wrong_type_arg ("octave_class::load_binary()", type_name ()); |
|
|
684 return false; |
|
|
685 } |
|
|
686 |
|
|
687 #if defined (HAVE_HDF5) |
|
|
688 |
|
|
689 bool |
|
|
690 octave_class::save_hdf5 (hid_t, const char *, bool) |
|
|
691 { |
|
|
692 gripe_wrong_type_arg ("octave_class::save_binary()", type_name ()); |
|
|
693 |
|
|
694 return false; |
|
|
695 } |
|
|
696 |
|
|
697 bool |
|
|
698 octave_class::load_hdf5 (hid_t, const char *, bool) |
|
|
699 { |
|
|
700 gripe_wrong_type_arg ("octave_class::load_binary()", type_name ()); |
|
|
701 |
|
|
702 return false; |
|
|
703 } |
|
|
704 |
|
|
705 #endif |
|
|
706 |
|
|
707 #if 0 |
|
|
708 bool |
|
|
709 octave_class::save_ascii (std::ostream& os, bool& infnan_warned) |
|
|
710 { |
|
|
711 Octave_map m = map_value (); |
|
|
712 os << "# length: " << m.length () << "\n"; |
|
|
713 |
|
|
714 Octave_map::iterator i = m.begin (); |
|
|
715 while (i != m.end ()) |
|
|
716 { |
|
|
717 octave_value val = map.contents (i); |
|
|
718 |
|
|
719 bool b = save_ascii_data (os, val, m.key (i), infnan_warned, false, 0); |
|
|
720 |
|
|
721 if (! b) |
|
|
722 return os; |
|
|
723 |
|
|
724 i++; |
|
|
725 } |
|
|
726 |
|
|
727 return true; |
|
|
728 } |
|
|
729 |
|
|
730 bool |
|
|
731 octave_class::load_ascii (std::istream& is) |
|
|
732 { |
|
|
733 octave_idx_type len = 0; |
|
|
734 bool success = true; |
|
|
735 |
|
|
736 if (extract_keyword (is, "length", len) && len >= 0) |
|
|
737 { |
|
|
738 if (len > 0) |
|
|
739 { |
|
|
740 Octave_map m (map); |
|
|
741 |
|
|
742 for (octave_idx_type j = 0; j < len; j++) |
|
|
743 { |
|
|
744 octave_value t2; |
|
|
745 bool dummy; |
|
|
746 |
|
|
747 // recurse to read cell elements |
|
|
748 std::string nm |
|
|
749 = read_ascii_data (is, std::string (), dummy, t2, j); |
|
|
750 |
|
|
751 if (!is) |
|
|
752 break; |
|
|
753 |
|
|
754 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); |
|
|
755 |
|
|
756 if (error_state) |
|
|
757 { |
|
|
758 error ("load: internal error loading class elements"); |
|
|
759 return false; |
|
|
760 } |
|
|
761 |
|
|
762 m.assign (nm, tcell); |
|
|
763 } |
|
|
764 |
|
|
765 if (is) |
|
|
766 map = m; |
|
|
767 else |
|
|
768 { |
|
|
769 error ("load: failed to load class"); |
|
|
770 success = false; |
|
|
771 } |
|
|
772 } |
|
|
773 else if (len == 0 ) |
|
|
774 map = Octave_map (dim_vector (1, 1)); |
|
|
775 else |
|
|
776 panic_impossible (); |
|
|
777 } |
|
|
778 else { |
|
|
779 error ("load: failed to extract number of elements in class"); |
|
|
780 success = false; |
|
|
781 } |
|
|
782 |
|
|
783 return success; |
|
|
784 } |
|
|
785 |
|
|
786 bool |
|
|
787 octave_class::save_binary (std::ostream& os, bool& save_as_floats) |
|
|
788 { |
|
|
789 Octave_map m = map_value (); |
|
|
790 |
|
|
791 int32_t len = m.length(); |
|
|
792 os.write (reinterpret_cast<char *> (&len), 4); |
|
|
793 |
|
|
794 Octave_map::iterator i = m.begin (); |
|
|
795 while (i != m.end ()) |
|
|
796 { |
|
|
797 octave_value val = map.contents (i); |
|
|
798 |
|
|
799 bool b = save_binary_data (os, val, m.key (i), "", 0, save_as_floats); |
|
|
800 |
|
|
801 if (! b) |
|
|
802 return os; |
|
|
803 |
|
|
804 i++; |
|
|
805 } |
|
|
806 |
|
|
807 return true; |
|
|
808 } |
|
|
809 |
|
|
810 bool |
|
|
811 octave_class::load_binary (std::istream& is, bool swap, |
|
|
812 oct_mach_info::float_format fmt) |
|
|
813 { |
|
|
814 bool success = true; |
|
|
815 int32_t len; |
|
|
816 if (! is.read (reinterpret_cast<char *> (&len), 4)) |
|
|
817 return false; |
|
|
818 if (swap) |
|
|
819 swap_bytes<4> (&len); |
|
|
820 |
|
|
821 if (len > 0) |
|
|
822 { |
|
|
823 Octave_map m (map); |
|
|
824 |
|
|
825 for (octave_idx_type j = 0; j < len; j++) |
|
|
826 { |
|
|
827 octave_value t2; |
|
|
828 bool dummy; |
|
|
829 std::string doc; |
|
|
830 |
|
|
831 // recurse to read cell elements |
|
|
832 std::string nm = read_binary_data (is, swap, fmt, std::string (), |
|
|
833 dummy, t2, doc); |
|
|
834 |
|
|
835 if (!is) |
|
|
836 break; |
|
|
837 |
|
|
838 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); |
|
|
839 |
|
|
840 if (error_state) |
|
|
841 { |
|
|
842 error ("load: internal error loading class elements"); |
|
|
843 return false; |
|
|
844 } |
|
|
845 |
|
|
846 m.assign (nm, tcell); |
|
|
847 } |
|
|
848 |
|
|
849 if (is) |
|
|
850 map = m; |
|
|
851 else |
|
|
852 { |
|
|
853 error ("load: failed to load class"); |
|
|
854 success = false; |
|
|
855 } |
|
|
856 } |
|
|
857 else if (len == 0 ) |
|
|
858 map = Octave_map (dim_vector (1, 1)); |
|
|
859 else |
|
|
860 panic_impossible (); |
|
|
861 |
|
|
862 return success; |
|
|
863 } |
|
|
864 |
|
|
865 #if defined (HAVE_HDF5) |
|
|
866 |
|
|
867 bool |
|
|
868 octave_class::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
|
|
869 { |
|
|
870 hid_t data_hid = -1; |
|
|
871 |
|
|
872 data_hid = H5Gcreate (loc_id, name, 0); |
|
|
873 if (data_hid < 0) return false; |
|
|
874 |
|
|
875 // recursively add each element of the class to this group |
|
|
876 Octave_map m = map_value (); |
|
|
877 Octave_map::iterator i = m.begin (); |
|
|
878 while (i != m.end ()) |
|
|
879 { |
|
|
880 octave_value val = map.contents (i); |
|
|
881 |
|
|
882 bool retval2 = add_hdf5_data (data_hid, val, m.key (i), "", false, |
|
|
883 save_as_floats); |
|
|
884 |
|
|
885 if (! retval2) |
|
|
886 break; |
|
|
887 |
|
|
888 i++; |
|
|
889 } |
|
|
890 |
|
|
891 H5Gclose (data_hid); |
|
|
892 |
|
|
893 return true; |
|
|
894 } |
|
|
895 |
|
|
896 bool |
|
|
897 octave_class::load_hdf5 (hid_t loc_id, const char *name, |
|
|
898 bool have_h5giterate_bug) |
|
|
899 { |
|
|
900 bool retval = false; |
|
|
901 |
|
|
902 hdf5_callback_data dsub; |
|
|
903 |
|
|
904 herr_t retval2 = 0; |
|
|
905 Octave_map m (dim_vector (1, 1)); |
|
|
906 int current_item = 0; |
|
|
907 #ifdef HAVE_H5GGET_NUM_OBJS |
|
|
908 hsize_t num_obj = 0; |
|
|
909 hid_t group_id = H5Gopen (loc_id, name); |
|
|
910 H5Gget_num_objs (group_id, &num_obj); |
|
|
911 H5Gclose (group_id); |
|
|
912 |
|
|
913 while (current_item < static_cast<int> (num_obj) |
|
|
914 && (retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
915 hdf5_read_next_data, &dsub)) > 0) |
|
|
916 #else |
|
|
917 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
918 hdf5_read_next_data, &dsub)) > 0) |
|
|
919 #endif |
|
|
920 { |
|
|
921 octave_value t2 = dsub.tc; |
|
|
922 |
|
|
923 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); |
|
|
924 |
|
|
925 if (error_state) |
|
|
926 { |
|
|
927 error ("load: internal error loading class elements"); |
|
|
928 return false; |
|
|
929 } |
|
|
930 |
|
|
931 m.assign (dsub.name, tcell); |
|
|
932 |
|
|
933 if (have_h5giterate_bug) |
|
|
934 current_item++; // H5Giterate returned the last index processed |
|
|
935 } |
|
|
936 |
|
|
937 if (retval2 >= 0) |
|
|
938 { |
|
|
939 map = m; |
|
|
940 retval = true; |
|
|
941 } |
|
|
942 |
|
|
943 return retval; |
|
|
944 } |
|
|
945 |
|
|
946 #endif |
|
|
947 |
|
|
948 #endif |
|
|
949 |
|
|
950 mxArray * |
|
|
951 octave_class::as_mxArray (void) const |
|
|
952 { |
|
|
953 gripe_wrong_type_arg ("octave_class::as_mxArray ()", type_name ()); |
|
|
954 |
|
|
955 return 0; |
|
|
956 } |
|
|
957 |
|
|
958 bool |
|
|
959 octave_class::in_class_method (void) const |
|
|
960 { |
|
|
961 octave_function *fcn = octave_call_stack::current (); |
|
|
962 |
|
|
963 return (fcn |
|
|
964 && (fcn->is_class_method () || fcn->is_class_constructor ()) |
|
|
965 && fcn->dispatch_class () == class_name ()); |
|
|
966 } |
|
|
967 |
|
|
968 DEFUN (class, args, , |
|
|
969 "-*- texinfo -*-\n\ |
|
|
970 @deftypefn {Built-in Function} {} class (@var{expr})\n\ |
|
|
971 @deftypefnx {Built-in Function} {} class (@var{s}, @var{id})\n\ |
|
|
972 \n\ |
|
|
973 Return the class of the expression @var{expr}, as a string or\n\ |
|
|
974 create a class object from the structure @var{s} with name @var{id}.\n\ |
|
|
975 @end deftypefn") |
|
|
976 { |
|
|
977 octave_value retval; |
|
|
978 |
|
|
979 int nargin = args.length (); |
|
|
980 |
|
|
981 if (nargin == 1) |
|
|
982 retval = args(0).class_name (); |
|
|
983 else if (nargin == 2) |
|
|
984 { |
|
|
985 Octave_map m = args(0).map_value (); |
|
|
986 |
|
|
987 if (! error_state) |
|
|
988 { |
|
|
989 std::string id = args(1).string_value (); |
|
|
990 |
|
|
991 if (! error_state) |
|
|
992 { |
|
|
993 octave_function *fcn = octave_call_stack::caller (); |
|
|
994 |
|
|
995 if (fcn && fcn->is_class_constructor ()) |
|
|
996 retval = octave_value (new octave_class (m, id)); |
|
|
997 else |
|
|
998 error ("class: invalid call from outside class constructor"); |
|
|
999 } |
|
|
1000 else |
|
|
1001 error ("class: expecting character string as second argument"); |
|
|
1002 } |
|
|
1003 else |
|
|
1004 error ("class: expecting structure as first argument"); |
|
|
1005 } |
|
|
1006 else |
|
|
1007 print_usage (); |
|
|
1008 |
|
|
1009 return retval; |
|
|
1010 } |
|
|
1011 |
|
|
1012 |
|
|
1013 DEFUN (isobject, args, , |
|
|
1014 "-*- texinfo -*-\n\ |
|
|
1015 @deftypefn {Built-in Function} {} isobject (@var{x})\n\ |
|
|
1016 Return true if @var{x} is a class object.\n\ |
|
|
1017 @end deftypefn") |
|
|
1018 { |
|
|
1019 octave_value retval; |
|
|
1020 |
|
|
1021 if (args.length () == 1) |
|
|
1022 retval = args(0).is_object (); |
|
|
1023 else |
|
|
1024 print_usage (); |
|
|
1025 |
|
|
1026 return retval; |
|
|
1027 } |
|
|
1028 |
|
|
1029 DEFCMD (methods, args, nargout, |
|
|
1030 "-*- texinfo -*-\n\ |
|
|
1031 @deftypefn {Built-in Function} {} methods (@var{x})\n\ |
|
|
1032 @deftypefnx {Built-in Function} {} methods (\"classname\")\n\ |
|
|
1033 Return a cell array containing the names of the methods for the\n\ |
|
|
1034 object @var{x} or the named class.\n\ |
|
|
1035 @end deftypefn") |
|
|
1036 { |
|
|
1037 octave_value retval; |
|
|
1038 |
|
|
1039 if (args.length () == 1) |
|
|
1040 { |
|
|
1041 octave_value arg = args(0); |
|
|
1042 |
|
|
1043 std::string class_name; |
|
|
1044 |
|
|
1045 if (arg.is_object ()) |
|
|
1046 class_name = arg.class_name (); |
|
|
1047 else if (arg.is_string ()) |
|
|
1048 class_name = arg.string_value (); |
|
|
1049 else |
|
|
1050 error ("methods: expecting object or class name as argument"); |
|
|
1051 |
|
|
1052 if (! error_state) |
|
|
1053 { |
|
|
1054 string_vector sv = load_path::methods (class_name); |
|
|
1055 |
|
|
1056 if (nargout == 0) |
|
|
1057 { |
|
|
1058 octave_stdout << "Methods for class " << class_name << ":\n\n"; |
|
|
1059 |
|
|
1060 sv.list_in_columns (octave_stdout); |
|
|
1061 |
|
|
1062 octave_stdout << std::endl; |
|
|
1063 } |
|
|
1064 else |
|
|
1065 retval = sv; |
|
|
1066 } |
|
|
1067 } |
|
|
1068 else |
|
|
1069 print_usage (); |
|
|
1070 |
|
|
1071 return retval; |
|
|
1072 } |
|
|
1073 |
|
|
1074 static bool |
|
|
1075 is_built_in_class (const std::string& cn) |
|
|
1076 { |
|
|
1077 static std::set<std::string> built_in_class_names; |
|
|
1078 |
|
|
1079 if (built_in_class_names.empty ()) |
|
|
1080 { |
|
|
1081 built_in_class_names.insert ("double"); |
|
|
1082 built_in_class_names.insert ("single"); |
|
|
1083 built_in_class_names.insert ("cell"); |
|
|
1084 built_in_class_names.insert ("struct"); |
|
|
1085 built_in_class_names.insert ("logical"); |
|
|
1086 built_in_class_names.insert ("char"); |
|
|
1087 built_in_class_names.insert ("function handle"); |
|
|
1088 built_in_class_names.insert ("int8"); |
|
|
1089 built_in_class_names.insert ("uint8"); |
|
|
1090 built_in_class_names.insert ("int16"); |
|
|
1091 built_in_class_names.insert ("uint16"); |
|
|
1092 built_in_class_names.insert ("int32"); |
|
|
1093 built_in_class_names.insert ("uint32"); |
|
|
1094 built_in_class_names.insert ("int64"); |
|
|
1095 built_in_class_names.insert ("uint64"); |
|
|
1096 } |
|
|
1097 |
|
|
1098 return built_in_class_names.find (cn) != built_in_class_names.end (); |
|
|
1099 } |
|
|
1100 |
|
|
1101 static void |
|
|
1102 set_class_relationship (const std::string& sup_class, |
|
|
1103 const std::string& inf_class) |
|
|
1104 { |
|
|
1105 // FIXME |
|
|
1106 |
|
|
1107 warning ("class precedence not implemented"); |
|
|
1108 } |
|
|
1109 |
|
|
1110 DEFUN (superiorto, args, , |
|
|
1111 "-*- texinfo -*-\n\ |
|
|
1112 @deftypefn {Built-in Function} {} superiorto (@var{class_name})\n\ |
|
|
1113 When called from a class constructor, mark the object currently\n\ |
|
|
1114 constructed as having a higher precedence than @var{class_name}.\n\ |
|
|
1115 This function may only be called from a class constructor.\n\ |
|
|
1116 @end deftypefn") |
|
|
1117 { |
|
|
1118 octave_value retval; |
|
|
1119 |
|
|
1120 octave_function *fcn = octave_call_stack::caller (); |
|
|
1121 |
|
|
1122 if (fcn && fcn->is_class_constructor ()) |
|
|
1123 { |
|
|
1124 if (args.length () == 1) |
|
|
1125 { |
|
|
1126 std::string class_name = args(0).string_value (); |
|
|
1127 |
|
|
1128 if (! error_state) |
|
|
1129 { |
|
|
1130 if (! is_built_in_class (class_name)) |
|
|
1131 { |
|
|
1132 std::string this_class_name = fcn->name (); |
|
|
1133 |
|
|
1134 set_class_relationship (this_class_name, class_name); |
|
|
1135 } |
|
|
1136 else |
|
|
1137 { |
|
|
1138 // User defined classes always have higher precedence |
|
|
1139 // than built-in classes. |
|
|
1140 } |
|
|
1141 } |
|
|
1142 else |
|
|
1143 error ("superiorto: expecting argument to be class name"); |
|
|
1144 } |
|
|
1145 else |
|
|
1146 print_usage (); |
|
|
1147 } |
|
|
1148 else |
|
|
1149 error ("superiorto: invalid call from outside class constructor"); |
|
|
1150 |
|
|
1151 return retval; |
|
|
1152 } |
|
|
1153 |
|
|
1154 DEFUN (inferiorto, args, , |
|
|
1155 "-*- texinfo -*-\n\ |
|
|
1156 @deftypefn {Built-in Function} {} inferiorto (@var{class_name})\n\ |
|
|
1157 When called from a class constructor, mark the object currently\n\ |
|
|
1158 constructed as having a lower precedence than @var{class_name}.\n\ |
|
|
1159 This function may only be called from a class constructor.\n\ |
|
|
1160 @end deftypefn") |
|
|
1161 { |
|
|
1162 octave_value retval; |
|
|
1163 |
|
|
1164 octave_function *fcn = octave_call_stack::caller (); |
|
|
1165 |
|
|
1166 if (fcn && fcn->is_class_constructor ()) |
|
|
1167 { |
|
|
1168 if (args.length () == 1) |
|
|
1169 { |
|
|
1170 std::string class_name = args(0).string_value (); |
|
|
1171 |
|
|
1172 if (! error_state) |
|
|
1173 { |
|
|
1174 if (! is_built_in_class (class_name)) |
|
|
1175 { |
|
|
1176 std::string this_class_name = fcn->name (); |
|
|
1177 |
|
|
1178 set_class_relationship (class_name, this_class_name); |
|
|
1179 } |
|
|
1180 else |
|
|
1181 error ("inferiorto: cannot give user-defined class lower precedence than built-in class"); |
|
|
1182 } |
|
|
1183 else |
|
|
1184 error ("inferiorto: expecting argument to be class name"); |
|
|
1185 } |
|
|
1186 else |
|
|
1187 print_usage (); |
|
|
1188 } |
|
|
1189 else |
|
|
1190 error ("inferiorto: invalid call from outside class constructor"); |
|
|
1191 |
|
|
1192 return retval; |
|
|
1193 } |
|
|
1194 |
|
|
1195 /* |
|
|
1196 ;;; Local Variables: *** |
|
|
1197 ;;; mode: C++ *** |
|
|
1198 ;;; End: *** |
|
|
1199 */ |
