Mercurial > hg > octave-lyh
annotate src/ov-class.cc @ 7960:22a18f206121
octave_class::subsasgn: only do internal magic if RHS is not an octave_class object
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 21 Jul 2008 17:55:29 -0400 |
| parents | 1e1e2608da7b |
| children | 5bf4e2c13ed8 |
| rev | line source |
|---|---|
| 7338 | 1 /* |
| 2 | |
| 3 Copyright (C) 2007 John W. Eaton | |
| 4 | |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7444 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 7338 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7444 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 7338 | 20 |
| 21 */ | |
| 22 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 #include <config.h> | |
| 25 #endif | |
| 26 | |
| 27 #include <iostream> | |
| 28 | |
| 29 #include "Array-util.h" | |
| 30 #include "byte-swap.h" | |
| 31 | |
| 32 #include "Cell.h" | |
| 33 #include "defun.h" | |
| 34 #include "error.h" | |
| 35 #include "gripes.h" | |
| 36 #include "load-path.h" | |
| 37 #include "ls-hdf5.h" | |
| 38 #include "ls-oct-ascii.h" | |
| 39 #include "ls-oct-binary.h" | |
| 40 #include "ls-utils.h" | |
| 41 #include "oct-lvalue.h" | |
| 42 #include "ov-class.h" | |
| 43 #include "ov-fcn.h" | |
| 44 #include "pager.h" | |
| 45 #include "parse.h" | |
| 46 #include "pr-output.h" | |
| 47 #include "toplev.h" | |
| 48 #include "unwind-prot.h" | |
| 49 #include "variables.h" | |
| 50 | |
| 51 DEFINE_OCTAVE_ALLOCATOR(octave_class); | |
| 52 | |
| 53 int octave_class::t_id (-1); | |
| 54 | |
| 55 const std::string octave_class::t_name ("class"); | |
| 56 | |
| 57 void | |
| 58 octave_class::register_type (void) | |
| 59 { | |
| 60 t_id = octave_value_typeinfo::register_type | |
| 61 (octave_class::t_name, "<unknown>", octave_value (new octave_class ())); | |
| 62 } | |
| 63 | |
| 64 Cell | |
| 65 octave_class::dotref (const octave_value_list& idx) | |
| 66 { | |
| 67 Cell retval; | |
| 68 | |
| 69 assert (idx.length () == 1); | |
| 70 | |
| 71 std::string nm = idx(0).string_value (); | |
| 72 | |
| 73 Octave_map::const_iterator p = map.seek (nm); | |
| 74 | |
| 75 if (p != map.end ()) | |
| 76 retval = map.contents (p); | |
| 77 else | |
| 78 error ("class has no member `%s'", nm.c_str ()); | |
| 79 | |
| 80 return retval; | |
| 81 } | |
| 82 | |
| 83 static void | |
| 84 gripe_invalid_index (void) | |
| 85 { | |
| 86 error ("invalid index for class"); | |
| 87 } | |
| 88 | |
| 89 static void | |
| 90 gripe_invalid_index_for_assignment (void) | |
| 91 { | |
| 92 error ("invalid index for class assignment"); | |
| 93 } | |
| 94 | |
| 95 static void | |
| 96 gripe_invalid_index_type (const std::string& nm, char t) | |
| 97 { | |
| 98 error ("%s cannot be indexed with %c", nm.c_str (), t); | |
| 99 } | |
| 100 | |
| 101 static void | |
| 102 gripe_failed_assignment (void) | |
| 103 { | |
| 104 error ("assignment to class element failed"); | |
| 105 } | |
| 106 | |
| 107 static inline octave_value_list | |
| 108 sanitize (const octave_value_list& ovl) | |
| 109 { | |
| 110 octave_value_list retval = ovl; | |
| 111 | |
| 112 for (octave_idx_type i = 0; i < ovl.length (); i++) | |
| 113 { | |
| 114 if (retval(i).is_magic_colon ()) | |
| 115 retval(i) = ":"; | |
| 116 } | |
| 117 | |
| 118 return retval; | |
| 119 } | |
| 120 | |
| 121 static inline octave_value | |
| 122 make_idx_args (const std::string& type, | |
| 123 const std::list<octave_value_list>& idx, | |
| 124 const std::string& who) | |
| 125 { | |
| 126 octave_value retval; | |
| 127 | |
| 128 size_t len = type.length (); | |
| 129 | |
| 130 if (len == idx.size ()) | |
| 131 { | |
| 132 Cell type_field (len, 1); | |
| 133 Cell subs_field (len, 1); | |
| 134 | |
| 135 std::list<octave_value_list>::const_iterator p = idx.begin (); | |
| 136 | |
| 137 for (size_t i = 0; i < len; i++) | |
| 138 { | |
| 139 char t = type[i]; | |
| 140 | |
| 141 switch (t) | |
| 142 { | |
| 143 case '(': | |
| 144 type_field(i) = "()"; | |
| 145 subs_field(i) = Cell (sanitize (*p++)); | |
| 146 break; | |
| 147 | |
| 148 case '{': | |
| 149 type_field(i) = "{}"; | |
| 150 subs_field(i) = Cell (sanitize (*p++)); | |
| 151 break; | |
| 152 | |
| 153 case '.': | |
| 154 { | |
| 155 type_field(i) = "."; | |
| 156 | |
| 157 octave_value_list vlist = *p++; | |
| 158 | |
| 159 if (vlist.length () == 1) | |
| 160 { | |
| 161 octave_value val = vlist(0); | |
| 162 | |
| 163 if (val.is_string ()) | |
| 164 subs_field(i) = val; | |
| 165 else | |
| 166 { | |
| 167 error ("expecting character string argument for `.' index"); | |
| 168 return retval; | |
| 169 } | |
| 170 } | |
| 171 else | |
| 172 { | |
| 173 error ("expecting single argument for `.' index"); | |
| 174 return retval; | |
| 175 } | |
| 176 } | |
| 177 break; | |
| 178 | |
| 179 default: | |
| 180 panic_impossible (); | |
| 181 break; | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 Octave_map m; | |
| 186 | |
| 187 m.assign ("type", type_field); | |
| 188 m.assign ("subs", subs_field); | |
| 189 | |
| 190 retval = m; | |
| 191 } | |
| 192 else | |
| 193 error ("invalid index for %s", who.c_str ()); | |
| 194 | |
| 195 return retval; | |
| 196 } | |
| 197 | |
| 198 octave_value_list | |
| 199 octave_class::subsref (const std::string& type, | |
| 200 const std::list<octave_value_list>& idx, | |
| 201 int nargout) | |
| 202 { | |
| 203 octave_value_list retval; | |
| 204 | |
| 205 if (in_class_method ()) | |
| 206 { | |
| 207 // FIXME -- this block of code is the same as the body of | |
| 208 // octave_struct::subsref. Maybe it could be shared instead of | |
| 209 // duplicated. | |
| 210 | |
| 211 int skip = 1; | |
| 212 | |
| 213 switch (type[0]) | |
| 214 { | |
| 215 case '(': | |
| 216 { | |
| 217 if (type.length () > 1 && type[1] == '.') | |
| 218 { | |
| 219 std::list<octave_value_list>::const_iterator p = idx.begin (); | |
| 220 octave_value_list key_idx = *++p; | |
| 221 | |
| 222 Cell tmp = dotref (key_idx); | |
| 223 | |
| 224 if (! error_state) | |
| 225 { | |
| 226 Cell t = tmp.index (idx.front ()); | |
| 227 | |
| 228 retval(0) = (t.length () == 1) ? t(0) : octave_value (t, true); | |
| 229 | |
| 230 // We handled two index elements, so tell | |
| 231 // next_subsref to skip both of them. | |
| 232 | |
| 233 skip++; | |
| 234 } | |
| 235 } | |
| 236 else | |
| 237 retval(0) = map.index (idx.front ()); | |
| 238 } | |
| 239 break; | |
| 240 | |
| 241 case '.': | |
| 242 { | |
| 243 if (map.numel() > 0) | |
| 244 { | |
| 245 Cell t = dotref (idx.front ()); | |
| 246 | |
| 247 retval(0) = (t.length () == 1) ? t(0) : octave_value (t, true); | |
| 248 } | |
| 249 } | |
| 250 break; | |
| 251 | |
| 252 case '{': | |
| 253 gripe_invalid_index_type (type_name (), type[0]); | |
| 254 break; | |
| 255 | |
| 256 default: | |
| 257 panic_impossible (); | |
| 258 } | |
| 259 | |
| 260 // FIXME -- perhaps there should be an | |
| 261 // octave_value_list::next_subsref member function? See also | |
| 262 // octave_user_function::subsref. | |
| 263 | |
| 264 if (idx.size () > 1) | |
| 265 retval = retval(0).next_subsref (nargout, type, idx, skip); | |
| 266 } | |
| 267 else | |
| 268 { | |
| 269 octave_value meth = symbol_table::find_method ("subsref", class_name ()); | |
| 270 | |
| 271 if (meth.is_defined ()) | |
| 272 { | |
| 273 octave_value_list args; | |
| 274 | |
| 275 args(1) = make_idx_args (type, idx, "subsref"); | |
| 276 | |
| 277 if (error_state) | |
| 278 return octave_value_list (); | |
| 279 | |
| 280 count++; | |
| 281 args(0) = octave_value (this); | |
| 282 | |
| 283 return feval (meth.function_value (), args, nargout); | |
| 284 } | |
| 285 else | |
| 286 { | |
| 287 if (type.length () == 1 && type[0] == '(') | |
| 288 retval(0) = octave_value (map.index (idx.front ()), class_name ()); | |
| 289 else | |
| 290 gripe_invalid_index (); | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 return retval; | |
| 295 } | |
| 296 | |
| 297 octave_value | |
| 298 octave_class::numeric_conv (const Cell& val, const std::string& type) | |
| 299 { | |
| 300 octave_value retval; | |
| 301 | |
| 302 if (val.length () == 1) | |
| 303 { | |
| 304 retval = val(0); | |
| 305 | |
| 306 if (type.length () > 0 && type[0] == '.' && ! retval.is_map ()) | |
| 307 retval = Octave_map (); | |
| 308 } | |
| 309 else | |
| 310 gripe_invalid_index_for_assignment (); | |
| 311 | |
| 312 return retval; | |
| 313 } | |
| 314 | |
| 315 octave_value | |
| 316 octave_class::subsasgn (const std::string& type, | |
| 317 const std::list<octave_value_list>& idx, | |
| 318 const octave_value& rhs) | |
| 319 { | |
| 320 octave_value retval; | |
| 321 | |
|
7960
22a18f206121
octave_class::subsasgn: only do internal magic if RHS is not an octave_class object
John W. Eaton <jwe@octave.org>
parents:
7444
diff
changeset
|
322 if (in_class_method () && ! rhs.is_object ()) |
| 7338 | 323 { |
| 324 // FIXME -- this block of code is the same as the body of | |
| 325 // octave_struct::subsasgn. Maybe it could be shared instead of | |
| 326 // duplicated. | |
| 327 | |
| 328 int n = type.length (); | |
| 329 | |
| 330 octave_value t_rhs = rhs; | |
| 331 | |
| 332 if (n > 1 && ! (type.length () == 2 && type[0] == '(' && type[1] == '.')) | |
| 333 { | |
| 334 switch (type[0]) | |
| 335 { | |
| 336 case '(': | |
| 337 { | |
| 338 if (type.length () > 1 && type[1] == '.') | |
| 339 { | |
| 340 std::list<octave_value_list>::const_iterator p = idx.begin (); | |
| 341 octave_value_list t_idx = *p; | |
| 342 | |
| 343 octave_value_list key_idx = *++p; | |
| 344 | |
| 345 assert (key_idx.length () == 1); | |
| 346 | |
| 347 std::string key = key_idx(0).string_value (); | |
| 348 | |
| 349 octave_value u; | |
| 350 | |
| 351 if (! map.contains (key)) | |
| 352 u = octave_value::empty_conv (type.substr (2), rhs); | |
| 353 else | |
| 354 { | |
| 355 Cell map_val = map.contents (key); | |
| 356 | |
| 357 Cell map_elt = map_val.index (idx.front (), true); | |
| 358 | |
| 359 u = numeric_conv (map_elt, type.substr (2)); | |
| 360 } | |
| 361 | |
| 362 if (! error_state) | |
| 363 { | |
| 364 std::list<octave_value_list> next_idx (idx); | |
| 365 | |
| 366 // We handled two index elements, so subsasgn to | |
| 367 // needs to skip both of them. | |
| 368 | |
| 369 next_idx.erase (next_idx.begin ()); | |
| 370 next_idx.erase (next_idx.begin ()); | |
| 371 | |
| 372 u.make_unique (); | |
| 373 | |
| 374 t_rhs = u.subsasgn (type.substr (2), next_idx, rhs); | |
| 375 } | |
| 376 } | |
| 377 else | |
| 378 gripe_invalid_index_for_assignment (); | |
| 379 } | |
| 380 break; | |
| 381 | |
| 382 case '.': | |
| 383 { | |
| 384 octave_value_list key_idx = idx.front (); | |
| 385 | |
| 386 assert (key_idx.length () == 1); | |
| 387 | |
| 388 std::string key = key_idx(0).string_value (); | |
| 389 | |
| 390 octave_value u; | |
| 391 | |
| 392 if (! map.contains (key)) | |
| 393 u = octave_value::empty_conv (type.substr (1), rhs); | |
| 394 else | |
| 395 { | |
| 396 Cell map_val = map.contents (key); | |
| 397 | |
| 398 u = numeric_conv (map_val, type.substr (1)); | |
| 399 } | |
| 400 | |
| 401 if (! error_state) | |
| 402 { | |
| 403 std::list<octave_value_list> next_idx (idx); | |
| 404 | |
| 405 next_idx.erase (next_idx.begin ()); | |
| 406 | |
| 407 u.make_unique (); | |
| 408 | |
| 409 t_rhs = u.subsasgn (type.substr (1), next_idx, rhs); | |
| 410 } | |
| 411 } | |
| 412 break; | |
| 413 | |
| 414 case '{': | |
| 415 gripe_invalid_index_type (type_name (), type[0]); | |
| 416 break; | |
| 417 | |
| 418 default: | |
| 419 panic_impossible (); | |
| 420 } | |
| 421 } | |
| 422 | |
| 423 if (! error_state) | |
| 424 { | |
| 425 switch (type[0]) | |
| 426 { | |
| 427 case '(': | |
| 428 { | |
| 429 if (n > 1 && type[1] == '.') | |
| 430 { | |
| 431 std::list<octave_value_list>::const_iterator p = idx.begin (); | |
| 432 octave_value_list key_idx = *++p; | |
| 433 | |
| 434 assert (key_idx.length () == 1); | |
| 435 | |
| 436 std::string key = key_idx(0).string_value (); | |
| 437 | |
| 438 if (! error_state) | |
| 439 { | |
| 440 map.assign (idx.front (), key, t_rhs); | |
| 441 | |
| 442 if (! error_state) | |
| 443 { | |
| 444 count++; | |
| 445 retval = octave_value (this); | |
| 446 } | |
| 447 else | |
| 448 gripe_failed_assignment (); | |
| 449 } | |
| 450 else | |
| 451 gripe_failed_assignment (); | |
| 452 } | |
| 453 else | |
| 454 { | |
| 455 if (t_rhs.is_map()) | |
| 456 { | |
| 457 Octave_map rhs_map = t_rhs.map_value (); | |
| 458 | |
| 459 if (! error_state) | |
| 460 { | |
| 461 map.assign (idx.front (), rhs_map); | |
| 462 | |
| 463 if (! error_state) | |
| 464 { | |
| 465 count++; | |
| 466 retval = octave_value (this); | |
| 467 } | |
| 468 else | |
| 469 gripe_failed_assignment (); | |
| 470 } | |
| 471 else | |
| 472 error ("invalid class assignment"); | |
| 473 } | |
| 474 else | |
| 475 { | |
| 476 if (t_rhs.is_empty()) | |
| 477 { | |
| 478 map.maybe_delete_elements (idx.front()); | |
| 479 | |
| 480 if (! error_state) | |
| 481 { | |
| 482 count++; | |
| 483 retval = octave_value (this); | |
| 484 } | |
| 485 else | |
| 486 gripe_failed_assignment (); | |
| 487 } | |
| 488 else | |
| 489 error ("invalid class assignment"); | |
| 490 } | |
| 491 } | |
| 492 } | |
| 493 break; | |
| 494 | |
| 495 case '.': | |
| 496 { | |
| 497 octave_value_list key_idx = idx.front (); | |
| 498 | |
| 499 assert (key_idx.length () == 1); | |
| 500 | |
| 501 std::string key = key_idx(0).string_value (); | |
| 502 | |
| 503 map.assign (key, t_rhs); | |
| 504 | |
| 505 if (! error_state) | |
| 506 { | |
| 507 count++; | |
| 508 retval = octave_value (this); | |
| 509 } | |
| 510 else | |
| 511 gripe_failed_assignment (); | |
| 512 } | |
| 513 break; | |
| 514 | |
| 515 case '{': | |
| 516 gripe_invalid_index_type (type_name (), type[0]); | |
| 517 break; | |
| 518 | |
| 519 default: | |
| 520 panic_impossible (); | |
| 521 } | |
| 522 } | |
| 523 else | |
| 524 gripe_failed_assignment (); | |
| 525 } | |
| 526 else | |
| 527 { | |
| 528 octave_value meth = symbol_table::find_method ("subsasgn", class_name ()); | |
| 529 | |
| 530 if (meth.is_defined ()) | |
| 531 { | |
| 532 octave_value_list args; | |
| 533 | |
| 534 args(2) = rhs; | |
| 535 | |
| 536 args(1) = make_idx_args (type, idx, "subsasgn"); | |
| 537 | |
| 538 if (error_state) | |
| 539 return octave_value_list (); | |
| 540 | |
| 541 count++; | |
| 542 args(0) = octave_value (this); | |
| 543 | |
| 544 octave_value_list tmp = feval (meth.function_value (), args); | |
| 545 | |
| 546 // FIXME -- should the subsasgn method be able to return | |
| 547 // more than one value? | |
| 548 | |
| 549 if (tmp.length () > 1) | |
| 550 error ("expecting single return value from @%s/subsasgn", | |
| 551 class_name().c_str ()); | |
| 552 else | |
| 553 retval = tmp(0); | |
| 554 | |
| 555 } | |
| 556 else | |
| 557 error ("no subsasgn method defined for class %s", | |
| 558 class_name().c_str ()); | |
| 559 } | |
| 560 | |
| 561 return retval; | |
| 562 } | |
| 563 | |
| 564 size_t | |
| 565 octave_class::byte_size (void) const | |
| 566 { | |
| 567 // Neglect the size of the fieldnames. | |
| 568 | |
| 569 size_t retval = 0; | |
| 570 | |
| 571 for (Octave_map::const_iterator p = map.begin (); p != map.end (); p++) | |
| 572 { | |
| 573 std::string key = map.key (p); | |
| 574 | |
| 575 octave_value val = octave_value (map.contents (p)); | |
| 576 | |
| 577 retval += val.byte_size (); | |
| 578 } | |
| 579 | |
| 580 return retval; | |
| 581 } | |
| 582 | |
| 583 Octave_map | |
| 584 octave_class::map_value (void) const | |
| 585 { | |
| 586 Octave_map retval; | |
| 587 gripe_wrong_type_arg ("octave_class::map_value()", type_name ()); | |
| 588 return retval; | |
| 589 } | |
| 590 | |
| 591 string_vector | |
| 592 octave_class::map_keys (void) const | |
| 593 { | |
| 594 string_vector retval; | |
| 595 gripe_wrong_type_arg ("octave_class::map_keys()", type_name ()); | |
| 596 return retval; | |
| 597 } | |
| 598 | |
| 599 void | |
| 600 octave_class::print (std::ostream& os, bool) const | |
| 601 { | |
| 602 print_raw (os); | |
| 603 } | |
| 604 | |
| 605 void | |
| 606 octave_class::print_raw (std::ostream& os, bool) const | |
| 607 { | |
| 608 unwind_protect::begin_frame ("octave_class_print"); | |
| 609 | |
| 610 unwind_protect_int (Vstruct_levels_to_print); | |
| 611 | |
| 612 indent (os); | |
| 613 os << " <class " << class_name () << ">"; | |
| 614 newline (os); | |
| 615 | |
| 616 unwind_protect::run_frame ("octave_class_print"); | |
| 617 } | |
| 618 | |
| 619 bool | |
| 620 octave_class::print_name_tag (std::ostream& os, const std::string& name) const | |
| 621 { | |
| 622 bool retval = false; | |
| 623 | |
| 624 indent (os); | |
| 625 os << name << " ="; | |
| 626 newline (os); | |
| 627 newline (os); | |
| 628 | |
| 629 return retval; | |
| 630 } | |
| 631 | |
| 632 void | |
| 633 octave_class::print_with_name (std::ostream&, const std::string& name, | |
| 634 bool) const | |
| 635 { | |
| 636 if (! (evaluating_function_body && Vsilent_functions)) | |
| 637 { | |
| 638 octave_value fcn = symbol_table::find_method ("display", class_name ()); | |
| 639 | |
| 640 if (fcn.is_defined ()) | |
| 641 { | |
| 642 octave_value_list args; | |
| 643 | |
| 644 args(0) = octave_value (clone (), 1); | |
| 645 | |
| 646 string_vector arg_names (1); | |
| 647 | |
| 648 arg_names[0] = name; | |
| 649 | |
| 650 args.stash_name_tags (arg_names); | |
| 651 | |
| 652 feval (fcn.function_value (), args); | |
| 653 } | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 bool | |
| 658 octave_class::save_ascii (std::ostream&, bool&) | |
| 659 { | |
| 660 gripe_wrong_type_arg ("octave_class::save_ascii()", type_name ()); | |
| 661 return false; | |
| 662 } | |
| 663 | |
| 664 bool | |
| 665 octave_class::load_ascii (std::istream&) | |
| 666 { | |
| 667 gripe_wrong_type_arg ("octave_class::load_ascii()", type_name ()); | |
| 668 return false; | |
| 669 } | |
| 670 | |
| 671 bool | |
| 672 octave_class::save_binary (std::ostream&, bool&) | |
| 673 { | |
| 674 gripe_wrong_type_arg ("octave_class::save_binary()", type_name ()); | |
| 675 return false; | |
| 676 } | |
| 677 | |
| 678 bool | |
| 679 octave_class::load_binary (std::istream&, bool, | |
| 680 oct_mach_info::float_format) | |
| 681 { | |
| 682 gripe_wrong_type_arg ("octave_class::load_binary()", type_name ()); | |
| 683 return false; | |
| 684 } | |
| 685 | |
| 686 #if defined (HAVE_HDF5) | |
| 687 | |
| 688 bool | |
| 689 octave_class::save_hdf5 (hid_t, const char *, bool) | |
| 690 { | |
| 691 gripe_wrong_type_arg ("octave_class::save_binary()", type_name ()); | |
| 692 | |
| 693 return false; | |
| 694 } | |
| 695 | |
| 696 bool | |
| 697 octave_class::load_hdf5 (hid_t, const char *, bool) | |
| 698 { | |
| 699 gripe_wrong_type_arg ("octave_class::load_binary()", type_name ()); | |
| 700 | |
| 701 return false; | |
| 702 } | |
| 703 | |
| 704 #endif | |
| 705 | |
| 706 #if 0 | |
| 707 bool | |
| 708 octave_class::save_ascii (std::ostream& os, bool& infnan_warned) | |
| 709 { | |
| 710 Octave_map m = map_value (); | |
| 711 os << "# length: " << m.length () << "\n"; | |
| 712 | |
| 713 Octave_map::iterator i = m.begin (); | |
| 714 while (i != m.end ()) | |
| 715 { | |
| 716 octave_value val = map.contents (i); | |
| 717 | |
| 718 bool b = save_ascii_data (os, val, m.key (i), infnan_warned, false, 0); | |
| 719 | |
| 720 if (! b) | |
| 721 return os; | |
| 722 | |
| 723 i++; | |
| 724 } | |
| 725 | |
| 726 return true; | |
| 727 } | |
| 728 | |
| 729 bool | |
| 730 octave_class::load_ascii (std::istream& is) | |
| 731 { | |
| 732 octave_idx_type len = 0; | |
| 733 bool success = true; | |
| 734 | |
| 735 if (extract_keyword (is, "length", len) && len >= 0) | |
| 736 { | |
| 737 if (len > 0) | |
| 738 { | |
| 739 Octave_map m (map); | |
| 740 | |
| 741 for (octave_idx_type j = 0; j < len; j++) | |
| 742 { | |
| 743 octave_value t2; | |
| 744 bool dummy; | |
| 745 | |
| 746 // recurse to read cell elements | |
| 747 std::string nm | |
| 748 = read_ascii_data (is, std::string (), dummy, t2, j); | |
| 749 | |
| 750 if (!is) | |
| 751 break; | |
| 752 | |
| 753 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); | |
| 754 | |
| 755 if (error_state) | |
| 756 { | |
| 757 error ("load: internal error loading class elements"); | |
| 758 return false; | |
| 759 } | |
| 760 | |
| 761 m.assign (nm, tcell); | |
| 762 } | |
| 763 | |
| 764 if (is) | |
| 765 map = m; | |
| 766 else | |
| 767 { | |
| 768 error ("load: failed to load class"); | |
| 769 success = false; | |
| 770 } | |
| 771 } | |
| 772 else if (len == 0 ) | |
| 773 map = Octave_map (dim_vector (1, 1)); | |
| 774 else | |
| 775 panic_impossible (); | |
| 776 } | |
| 777 else { | |
| 778 error ("load: failed to extract number of elements in class"); | |
| 779 success = false; | |
| 780 } | |
| 781 | |
| 782 return success; | |
| 783 } | |
| 784 | |
| 785 bool | |
| 786 octave_class::save_binary (std::ostream& os, bool& save_as_floats) | |
| 787 { | |
| 788 Octave_map m = map_value (); | |
| 789 | |
| 790 int32_t len = m.length(); | |
| 791 os.write (reinterpret_cast<char *> (&len), 4); | |
| 792 | |
| 793 Octave_map::iterator i = m.begin (); | |
| 794 while (i != m.end ()) | |
| 795 { | |
| 796 octave_value val = map.contents (i); | |
| 797 | |
| 798 bool b = save_binary_data (os, val, m.key (i), "", 0, save_as_floats); | |
| 799 | |
| 800 if (! b) | |
| 801 return os; | |
| 802 | |
| 803 i++; | |
| 804 } | |
| 805 | |
| 806 return true; | |
| 807 } | |
| 808 | |
| 809 bool | |
| 810 octave_class::load_binary (std::istream& is, bool swap, | |
| 811 oct_mach_info::float_format fmt) | |
| 812 { | |
| 813 bool success = true; | |
| 814 int32_t len; | |
| 815 if (! is.read (reinterpret_cast<char *> (&len), 4)) | |
| 816 return false; | |
| 817 if (swap) | |
| 818 swap_bytes<4> (&len); | |
| 819 | |
| 820 if (len > 0) | |
| 821 { | |
| 822 Octave_map m (map); | |
| 823 | |
| 824 for (octave_idx_type j = 0; j < len; j++) | |
| 825 { | |
| 826 octave_value t2; | |
| 827 bool dummy; | |
| 828 std::string doc; | |
| 829 | |
| 830 // recurse to read cell elements | |
| 831 std::string nm = read_binary_data (is, swap, fmt, std::string (), | |
| 832 dummy, t2, doc); | |
| 833 | |
| 834 if (!is) | |
| 835 break; | |
| 836 | |
| 837 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); | |
| 838 | |
| 839 if (error_state) | |
| 840 { | |
| 841 error ("load: internal error loading class elements"); | |
| 842 return false; | |
| 843 } | |
| 844 | |
| 845 m.assign (nm, tcell); | |
| 846 } | |
| 847 | |
| 848 if (is) | |
| 849 map = m; | |
| 850 else | |
| 851 { | |
| 852 error ("load: failed to load class"); | |
| 853 success = false; | |
| 854 } | |
| 855 } | |
| 856 else if (len == 0 ) | |
| 857 map = Octave_map (dim_vector (1, 1)); | |
| 858 else | |
| 859 panic_impossible (); | |
| 860 | |
| 861 return success; | |
| 862 } | |
| 863 | |
| 864 #if defined (HAVE_HDF5) | |
| 865 | |
| 866 bool | |
| 867 octave_class::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) | |
| 868 { | |
| 869 hid_t data_hid = -1; | |
| 870 | |
| 871 data_hid = H5Gcreate (loc_id, name, 0); | |
| 872 if (data_hid < 0) return false; | |
| 873 | |
| 874 // recursively add each element of the class to this group | |
| 875 Octave_map m = map_value (); | |
| 876 Octave_map::iterator i = m.begin (); | |
| 877 while (i != m.end ()) | |
| 878 { | |
| 879 octave_value val = map.contents (i); | |
| 880 | |
| 881 bool retval2 = add_hdf5_data (data_hid, val, m.key (i), "", false, | |
| 882 save_as_floats); | |
| 883 | |
| 884 if (! retval2) | |
| 885 break; | |
| 886 | |
| 887 i++; | |
| 888 } | |
| 889 | |
| 890 H5Gclose (data_hid); | |
| 891 | |
| 892 return true; | |
| 893 } | |
| 894 | |
| 895 bool | |
| 896 octave_class::load_hdf5 (hid_t loc_id, const char *name, | |
| 897 bool have_h5giterate_bug) | |
| 898 { | |
| 899 bool retval = false; | |
| 900 | |
| 901 hdf5_callback_data dsub; | |
| 902 | |
| 903 herr_t retval2 = 0; | |
| 904 Octave_map m (dim_vector (1, 1)); | |
| 905 int current_item = 0; | |
| 906 #ifdef HAVE_H5GGET_NUM_OBJS | |
| 907 hsize_t num_obj = 0; | |
| 908 hid_t group_id = H5Gopen (loc_id, name); | |
| 909 H5Gget_num_objs (group_id, &num_obj); | |
| 910 H5Gclose (group_id); | |
| 911 | |
| 912 while (current_item < static_cast<int> (num_obj) | |
| 913 && (retval2 = H5Giterate (loc_id, name, ¤t_item, | |
| 914 hdf5_read_next_data, &dsub)) > 0) | |
| 915 #else | |
| 916 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, | |
| 917 hdf5_read_next_data, &dsub)) > 0) | |
| 918 #endif | |
| 919 { | |
| 920 octave_value t2 = dsub.tc; | |
| 921 | |
| 922 Cell tcell = t2.is_cell () ? t2.cell_value () : Cell (t2); | |
| 923 | |
| 924 if (error_state) | |
| 925 { | |
| 926 error ("load: internal error loading class elements"); | |
| 927 return false; | |
| 928 } | |
| 929 | |
| 930 m.assign (dsub.name, tcell); | |
| 931 | |
| 932 if (have_h5giterate_bug) | |
| 933 current_item++; // H5Giterate returned the last index processed | |
| 934 } | |
| 935 | |
| 936 if (retval2 >= 0) | |
| 937 { | |
| 938 map = m; | |
| 939 retval = true; | |
| 940 } | |
| 941 | |
| 942 return retval; | |
| 943 } | |
| 944 | |
| 945 #endif | |
| 946 | |
| 947 #endif | |
| 948 | |
| 949 mxArray * | |
| 950 octave_class::as_mxArray (void) const | |
| 951 { | |
| 952 gripe_wrong_type_arg ("octave_class::as_mxArray ()", type_name ()); | |
| 953 | |
| 954 return 0; | |
| 955 } | |
| 956 | |
| 957 bool | |
| 958 octave_class::in_class_method (void) const | |
| 959 { | |
| 960 octave_function *fcn = octave_call_stack::current (); | |
| 961 | |
| 962 return (fcn | |
| 963 && (fcn->is_class_method () || fcn->is_class_constructor ()) | |
| 964 && fcn->dispatch_class () == class_name ()); | |
| 965 } | |
| 966 | |
| 967 DEFUN (class, args, , | |
| 968 "-*- texinfo -*-\n\ | |
| 969 @deftypefn {Built-in Function} {} class (@var{expr})\n\ | |
| 970 @deftypefnx {Built-in Function} {} class (@var{s}, @var{id})\n\ | |
| 971 \n\ | |
| 972 Return the class of the expression @var{expr}, as a string or\n\ | |
| 973 create a class object from the structure @var{s} with name @var{id}.\n\ | |
| 974 @end deftypefn") | |
| 975 { | |
| 976 octave_value retval; | |
| 977 | |
| 978 int nargin = args.length (); | |
| 979 | |
| 980 if (nargin == 1) | |
| 981 retval = args(0).class_name (); | |
| 982 else if (nargin == 2) | |
| 983 { | |
| 984 Octave_map m = args(0).map_value (); | |
| 985 | |
| 986 if (! error_state) | |
| 987 { | |
| 988 std::string id = args(1).string_value (); | |
| 989 | |
| 990 if (! error_state) | |
| 991 { | |
| 992 octave_function *fcn = octave_call_stack::caller (); | |
| 993 | |
| 994 if (fcn && fcn->is_class_constructor ()) | |
| 995 retval = octave_value (new octave_class (m, id)); | |
| 996 else | |
| 997 error ("class: invalid call from outside class constructor"); | |
| 998 } | |
| 999 else | |
| 1000 error ("class: expecting character string as second argument"); | |
| 1001 } | |
| 1002 else | |
| 1003 error ("class: expecting structure as first argument"); | |
| 1004 } | |
| 1005 else | |
| 1006 print_usage (); | |
| 1007 | |
| 1008 return retval; | |
| 1009 } | |
| 1010 | |
| 1011 | |
| 1012 DEFUN (isobject, args, , | |
| 1013 "-*- texinfo -*-\n\ | |
| 1014 @deftypefn {Built-in Function} {} isobject (@var{x})\n\ | |
| 1015 Return true if @var{x} is a class object.\n\ | |
| 1016 @end deftypefn") | |
| 1017 { | |
| 1018 octave_value retval; | |
| 1019 | |
| 1020 if (args.length () == 1) | |
| 1021 retval = args(0).is_object (); | |
| 1022 else | |
| 1023 print_usage (); | |
| 1024 | |
| 1025 return retval; | |
| 1026 } | |
| 1027 | |
| 1028 DEFCMD (methods, args, nargout, | |
| 1029 "-*- texinfo -*-\n\ | |
| 1030 @deftypefn {Built-in Function} {} methods (@var{x})\n\ | |
| 1031 @deftypefnx {Built-in Function} {} methods (\"classname\")\n\ | |
| 1032 Return a cell array containing the names of the methods for the\n\ | |
| 1033 object @var{x} or the named class.\n\ | |
| 1034 @end deftypefn") | |
| 1035 { | |
| 1036 octave_value retval; | |
| 1037 | |
| 1038 if (args.length () == 1) | |
| 1039 { | |
| 1040 octave_value arg = args(0); | |
| 1041 | |
| 1042 std::string class_name; | |
| 1043 | |
| 1044 if (arg.is_object ()) | |
| 1045 class_name = arg.class_name (); | |
| 1046 else if (arg.is_string ()) | |
| 1047 class_name = arg.string_value (); | |
| 1048 else | |
| 1049 error ("methods: expecting object or class name as argument"); | |
| 1050 | |
| 1051 if (! error_state) | |
| 1052 { | |
| 1053 string_vector sv = load_path::methods (class_name); | |
| 1054 | |
| 1055 if (nargout == 0) | |
| 1056 { | |
| 1057 octave_stdout << "Methods for class " << class_name << ":\n\n"; | |
| 1058 | |
| 1059 sv.list_in_columns (octave_stdout); | |
| 1060 | |
| 1061 octave_stdout << std::endl; | |
| 1062 } | |
| 1063 else | |
| 1064 retval = sv; | |
| 1065 } | |
| 1066 } | |
| 1067 else | |
| 1068 print_usage (); | |
| 1069 | |
| 1070 return retval; | |
| 1071 } | |
| 1072 | |
| 1073 static bool | |
| 1074 is_built_in_class (const std::string& cn) | |
| 1075 { | |
| 1076 static std::set<std::string> built_in_class_names; | |
| 1077 | |
| 1078 if (built_in_class_names.empty ()) | |
| 1079 { | |
| 1080 built_in_class_names.insert ("double"); | |
| 1081 built_in_class_names.insert ("single"); | |
| 1082 built_in_class_names.insert ("cell"); | |
| 1083 built_in_class_names.insert ("struct"); | |
| 1084 built_in_class_names.insert ("logical"); | |
| 1085 built_in_class_names.insert ("char"); | |
| 1086 built_in_class_names.insert ("function handle"); | |
| 1087 built_in_class_names.insert ("int8"); | |
| 1088 built_in_class_names.insert ("uint8"); | |
| 1089 built_in_class_names.insert ("int16"); | |
| 1090 built_in_class_names.insert ("uint16"); | |
| 1091 built_in_class_names.insert ("int32"); | |
| 1092 built_in_class_names.insert ("uint32"); | |
| 1093 built_in_class_names.insert ("int64"); | |
| 1094 built_in_class_names.insert ("uint64"); | |
| 1095 } | |
| 1096 | |
| 1097 return built_in_class_names.find (cn) != built_in_class_names.end (); | |
| 1098 } | |
| 1099 | |
| 1100 static void | |
| 1101 set_class_relationship (const std::string& sup_class, | |
| 1102 const std::string& inf_class) | |
| 1103 { | |
| 1104 // FIXME | |
| 1105 | |
| 1106 warning ("class precedence not implemented"); | |
| 1107 } | |
| 1108 | |
| 1109 DEFUN (superiorto, args, , | |
| 1110 "-*- texinfo -*-\n\ | |
| 1111 @deftypefn {Built-in Function} {} superiorto (@var{class_name})\n\ | |
| 1112 When called from a class constructor, mark the object currently\n\ | |
| 1113 constructed as having a higher precedence than @var{class_name}.\n\ | |
| 1114 This function may only be called from a class constructor.\n\ | |
| 1115 @end deftypefn") | |
| 1116 { | |
| 1117 octave_value retval; | |
| 1118 | |
| 1119 octave_function *fcn = octave_call_stack::caller (); | |
| 1120 | |
| 1121 if (fcn && fcn->is_class_constructor ()) | |
| 1122 { | |
| 1123 if (args.length () == 1) | |
| 1124 { | |
| 1125 std::string class_name = args(0).string_value (); | |
| 1126 | |
| 1127 if (! error_state) | |
| 1128 { | |
| 1129 if (! is_built_in_class (class_name)) | |
| 1130 { | |
| 1131 std::string this_class_name = fcn->name (); | |
| 1132 | |
| 1133 set_class_relationship (this_class_name, class_name); | |
| 1134 } | |
| 1135 else | |
| 1136 { | |
| 1137 // User defined classes always have higher precedence | |
| 1138 // than built-in classes. | |
| 1139 } | |
| 1140 } | |
| 1141 else | |
| 1142 error ("superiorto: expecting argument to be class name"); | |
| 1143 } | |
| 1144 else | |
| 1145 print_usage (); | |
| 1146 } | |
| 1147 else | |
| 1148 error ("superiorto: invalid call from outside class constructor"); | |
| 1149 | |
| 1150 return retval; | |
| 1151 } | |
| 1152 | |
| 1153 DEFUN (inferiorto, args, , | |
| 1154 "-*- texinfo -*-\n\ | |
| 1155 @deftypefn {Built-in Function} {} inferiorto (@var{class_name})\n\ | |
| 1156 When called from a class constructor, mark the object currently\n\ | |
| 1157 constructed as having a lower precedence than @var{class_name}.\n\ | |
| 1158 This function may only be called from a class constructor.\n\ | |
| 1159 @end deftypefn") | |
| 1160 { | |
| 1161 octave_value retval; | |
| 1162 | |
| 1163 octave_function *fcn = octave_call_stack::caller (); | |
| 1164 | |
| 1165 if (fcn && fcn->is_class_constructor ()) | |
| 1166 { | |
| 1167 if (args.length () == 1) | |
| 1168 { | |
| 1169 std::string class_name = args(0).string_value (); | |
| 1170 | |
| 1171 if (! error_state) | |
| 1172 { | |
| 1173 if (! is_built_in_class (class_name)) | |
| 1174 { | |
| 1175 std::string this_class_name = fcn->name (); | |
| 1176 | |
| 1177 set_class_relationship (class_name, this_class_name); | |
| 1178 } | |
| 1179 else | |
| 1180 error ("inferiorto: cannot give user-defined class lower precedence than built-in class"); | |
| 1181 } | |
| 1182 else | |
| 1183 error ("inferiorto: expecting argument to be class name"); | |
| 1184 } | |
| 1185 else | |
| 1186 print_usage (); | |
| 1187 } | |
| 1188 else | |
| 1189 error ("inferiorto: invalid call from outside class constructor"); | |
| 1190 | |
| 1191 return retval; | |
| 1192 } | |
| 1193 | |
| 1194 /* | |
| 1195 ;;; Local Variables: *** | |
| 1196 ;;; mode: C++ *** | |
| 1197 ;;; End: *** | |
| 1198 */ |