Mercurial > projects > ldc
annotate dmd/dsymbol.c @ 884:a166ba5bdf2d
Automated merge with http://hg.dsource.org/projects/ldc
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 12 Jan 2009 07:51:39 +0100 |
| parents | e83ba4ae4878 |
| children | 1714836f2c0b |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 336 | 3 // Copyright (c) 1999-2008 by Digital Mars |
| 159 | 4 // All Rights Reserved |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <string.h> | |
| 13 #include <assert.h> | |
| 14 | |
| 15 #include "mem.h" | |
| 16 | |
| 17 #include "mars.h" | |
| 18 #include "dsymbol.h" | |
| 19 #include "aggregate.h" | |
| 20 #include "identifier.h" | |
| 21 #include "module.h" | |
| 22 #include "mtype.h" | |
| 23 #include "expression.h" | |
| 24 #include "statement.h" | |
| 25 #include "declaration.h" | |
| 26 #include "id.h" | |
| 27 #include "scope.h" | |
| 28 #include "init.h" | |
| 29 #include "import.h" | |
| 30 #include "template.h" | |
| 31 | |
| 32 #include "../gen/enums.h" | |
| 33 | |
| 34 /****************************** Dsymbol ******************************/ | |
| 35 | |
| 36 Dsymbol::Dsymbol() | |
| 37 { | |
| 38 //printf("Dsymbol::Dsymbol(%p)\n", this); | |
| 39 this->ident = NULL; | |
| 40 this->c_ident = NULL; | |
| 41 this->parent = NULL; | |
| 42 this->csym = NULL; | |
| 43 this->isym = NULL; | |
| 44 this->loc = 0; | |
| 45 this->comment = NULL; | |
| 46 | |
| 47 this->llvmInternal = LLVMnone; | |
| 48 } | |
| 49 | |
| 50 Dsymbol::Dsymbol(Identifier *ident) | |
| 51 { | |
| 52 //printf("Dsymbol::Dsymbol(%p, ident)\n", this); | |
| 53 this->ident = ident; | |
| 54 this->c_ident = NULL; | |
| 55 this->parent = NULL; | |
| 56 this->csym = NULL; | |
| 57 this->isym = NULL; | |
| 58 this->loc = 0; | |
| 59 this->comment = NULL; | |
| 60 | |
| 61 this->llvmInternal = LLVMnone; | |
| 62 } | |
| 63 | |
| 64 int Dsymbol::equals(Object *o) | |
| 65 { Dsymbol *s; | |
| 66 | |
| 67 if (this == o) | |
| 68 return TRUE; | |
| 69 s = (Dsymbol *)(o); | |
| 70 if (s && ident->equals(s->ident)) | |
| 71 return TRUE; | |
| 72 return FALSE; | |
| 73 } | |
| 74 | |
| 75 /************************************** | |
| 76 * Copy the syntax. | |
| 77 * Used for template instantiations. | |
| 78 * If s is NULL, allocate the new object, otherwise fill it in. | |
| 79 */ | |
| 80 | |
| 81 Dsymbol *Dsymbol::syntaxCopy(Dsymbol *s) | |
| 82 { | |
| 83 print(); | |
| 84 printf("%s %s\n", kind(), toChars()); | |
| 85 assert(0); | |
| 86 return NULL; | |
| 87 } | |
| 88 | |
| 89 /************************************** | |
| 90 * Determine if this symbol is only one. | |
| 91 * Returns: | |
| 92 * FALSE, *ps = NULL: There are 2 or more symbols | |
| 93 * TRUE, *ps = NULL: There are zero symbols | |
| 94 * TRUE, *ps = symbol: The one and only one symbol | |
| 95 */ | |
| 96 | |
| 97 int Dsymbol::oneMember(Dsymbol **ps) | |
| 98 { | |
| 99 //printf("Dsymbol::oneMember()\n"); | |
| 100 *ps = this; | |
| 101 return TRUE; | |
| 102 } | |
| 103 | |
| 104 /***************************************** | |
| 105 * Same as Dsymbol::oneMember(), but look at an array of Dsymbols. | |
| 106 */ | |
| 107 | |
| 108 int Dsymbol::oneMembers(Array *members, Dsymbol **ps) | |
| 109 { | |
| 110 //printf("Dsymbol::oneMembers() %d\n", members ? members->dim : 0); | |
| 111 Dsymbol *s = NULL; | |
| 112 | |
| 113 if (members) | |
| 114 { | |
| 115 for (int i = 0; i < members->dim; i++) | |
| 116 { Dsymbol *sx = (Dsymbol *)members->data[i]; | |
| 117 | |
| 118 int x = sx->oneMember(ps); | |
| 119 //printf("\t[%d] kind %s = %d, s = %p\n", i, sx->kind(), x, *ps); | |
| 120 if (!x) | |
| 121 { | |
| 122 //printf("\tfalse 1\n"); | |
| 123 assert(*ps == NULL); | |
| 124 return FALSE; | |
| 125 } | |
| 126 if (*ps) | |
| 127 { | |
| 128 if (s) // more than one symbol | |
| 129 { *ps = NULL; | |
| 130 //printf("\tfalse 2\n"); | |
| 131 return FALSE; | |
| 132 } | |
| 133 s = *ps; | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 *ps = s; // s is the one symbol, NULL if none | |
| 138 //printf("\ttrue\n"); | |
| 139 return TRUE; | |
| 140 } | |
| 141 | |
| 142 /***************************************** | |
| 143 * Is Dsymbol a variable that contains pointers? | |
| 144 */ | |
| 145 | |
| 146 int Dsymbol::hasPointers() | |
| 147 { | |
| 148 //printf("Dsymbol::hasPointers() %s\n", toChars()); | |
| 149 return 0; | |
| 150 } | |
| 151 | |
| 152 char *Dsymbol::toChars() | |
| 153 { | |
| 154 return ident ? ident->toChars() : (char *)"__anonymous"; | |
| 155 } | |
| 156 | |
| 157 char *Dsymbol::toPrettyChars() | |
| 158 { Dsymbol *p; | |
| 159 char *s; | |
| 160 char *q; | |
| 161 size_t len; | |
| 162 | |
| 163 //printf("Dsymbol::toPrettyChars() '%s'\n", toChars()); | |
| 164 if (!parent) | |
| 165 return toChars(); | |
| 166 | |
| 167 len = 0; | |
| 168 for (p = this; p; p = p->parent) | |
| 169 len += strlen(p->toChars()) + 1; | |
| 170 | |
| 171 s = (char *)mem.malloc(len); | |
| 172 q = s + len - 1; | |
| 173 *q = 0; | |
| 174 for (p = this; p; p = p->parent) | |
| 175 { | |
| 176 char *t = p->toChars(); | |
| 177 len = strlen(t); | |
| 178 q -= len; | |
| 179 memcpy(q, t, len); | |
| 180 if (q == s) | |
| 181 break; | |
| 182 q--; | |
| 183 *q = '.'; | |
| 184 } | |
| 185 return s; | |
| 186 } | |
| 187 | |
| 188 char *Dsymbol::locToChars() | |
| 189 { | |
| 190 OutBuffer buf; | |
| 191 char *p; | |
| 192 | |
| 193 Module *m = getModule(); | |
| 194 | |
| 195 if (m && m->srcfile) | |
| 196 loc.filename = m->srcfile->toChars(); | |
| 197 return loc.toChars(); | |
| 198 } | |
| 199 | |
| 336 | 200 const char *Dsymbol::kind() |
| 159 | 201 { |
| 202 return "symbol"; | |
| 203 } | |
| 204 | |
| 205 /********************************* | |
| 206 * If this symbol is really an alias for another, | |
| 207 * return that other. | |
| 208 */ | |
| 209 | |
| 210 Dsymbol *Dsymbol::toAlias() | |
| 211 { | |
| 212 return this; | |
| 213 } | |
| 214 | |
| 215 Dsymbol *Dsymbol::toParent() | |
| 216 { | |
| 217 return parent ? parent->pastMixin() : NULL; | |
| 218 } | |
| 219 | |
| 220 Dsymbol *Dsymbol::pastMixin() | |
| 221 { | |
| 222 Dsymbol *s = this; | |
| 223 | |
| 224 //printf("Dsymbol::pastMixin() %s\n", toChars()); | |
| 225 while (s && s->isTemplateMixin()) | |
| 226 s = s->parent; | |
| 227 return s; | |
| 228 } | |
| 229 | |
| 230 /********************************** | |
| 231 * Use this instead of toParent() when looking for the | |
| 232 * 'this' pointer of the enclosing function/class. | |
| 233 */ | |
| 234 | |
| 235 Dsymbol *Dsymbol::toParent2() | |
| 236 { | |
| 237 Dsymbol *s = parent; | |
| 238 while (s && s->isTemplateInstance()) | |
| 239 s = s->parent; | |
| 240 return s; | |
| 241 } | |
| 242 | |
| 336 | 243 TemplateInstance *Dsymbol::inTemplateInstance() |
| 244 { | |
| 245 for (Dsymbol *parent = this->parent; parent; parent = parent->parent) | |
| 246 { | |
| 247 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 248 if (ti) | |
| 249 return ti; | |
| 250 } | |
| 251 return NULL; | |
| 252 } | |
| 159 | 253 |
| 254 int Dsymbol::isAnonymous() | |
| 255 { | |
| 256 return ident ? 0 : 1; | |
| 257 } | |
| 258 | |
| 259 void Dsymbol::semantic(Scope *sc) | |
| 260 { | |
| 261 error("%p has no semantic routine", this); | |
| 262 } | |
| 263 | |
| 264 void Dsymbol::semantic2(Scope *sc) | |
| 265 { | |
| 266 // Most Dsymbols have no further semantic analysis needed | |
| 267 } | |
| 268 | |
| 269 void Dsymbol::semantic3(Scope *sc) | |
| 270 { | |
| 271 // Most Dsymbols have no further semantic analysis needed | |
| 272 } | |
| 273 | |
| 274 void Dsymbol::inlineScan() | |
| 275 { | |
| 276 // Most Dsymbols have no further semantic analysis needed | |
| 277 } | |
| 278 | |
| 336 | 279 /********************************************* |
| 280 * Search for ident as member of s. | |
| 281 * Input: | |
| 282 * flags: 1 don't find private members | |
| 283 * 2 don't give error messages | |
| 284 * 4 return NULL if ambiguous | |
| 285 * Returns: | |
| 286 * NULL if not found | |
| 287 */ | |
| 288 | |
| 159 | 289 Dsymbol *Dsymbol::search(Loc loc, Identifier *ident, int flags) |
| 290 { | |
| 291 //printf("Dsymbol::search(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 292 return NULL; | |
| 293 } | |
| 294 | |
| 295 /*************************************** | |
| 296 * Search for identifier id as a member of 'this'. | |
| 297 * id may be a template instance. | |
| 298 * Returns: | |
| 299 * symbol found, NULL if not | |
| 300 */ | |
| 301 | |
| 302 Dsymbol *Dsymbol::searchX(Loc loc, Scope *sc, Identifier *id) | |
| 303 { | |
| 304 //printf("Dsymbol::searchX(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 305 Dsymbol *s = toAlias(); | |
| 306 Dsymbol *sm; | |
| 307 | |
| 308 switch (id->dyncast()) | |
| 309 { | |
| 310 case DYNCAST_IDENTIFIER: | |
| 311 sm = s->search(loc, id, 0); | |
| 312 break; | |
| 313 | |
| 314 case DYNCAST_DSYMBOL: | |
| 315 { // It's a template instance | |
| 316 //printf("\ttemplate instance id\n"); | |
| 317 Dsymbol *st = (Dsymbol *)id; | |
| 318 TemplateInstance *ti = st->isTemplateInstance(); | |
| 319 id = ti->name; | |
| 320 sm = s->search(loc, id, 0); | |
| 321 if (!sm) | |
| 322 { error("template identifier %s is not a member of %s %s", | |
| 323 id->toChars(), s->kind(), s->toChars()); | |
| 324 return NULL; | |
| 325 } | |
| 326 sm = sm->toAlias(); | |
| 327 TemplateDeclaration *td = sm->isTemplateDeclaration(); | |
| 328 if (!td) | |
| 329 { | |
| 330 error("%s is not a template, it is a %s", id->toChars(), sm->kind()); | |
| 331 return NULL; | |
| 332 } | |
| 333 ti->tempdecl = td; | |
| 334 if (!ti->semanticdone) | |
| 335 ti->semantic(sc); | |
| 336 sm = ti->toAlias(); | |
| 337 break; | |
| 338 } | |
| 339 | |
| 340 default: | |
| 341 assert(0); | |
| 342 } | |
| 343 return sm; | |
| 344 } | |
| 345 | |
| 346 int Dsymbol::overloadInsert(Dsymbol *s) | |
| 347 { | |
| 348 //printf("Dsymbol::overloadInsert('%s')\n", s->toChars()); | |
| 349 return FALSE; | |
| 350 } | |
| 351 | |
| 352 void Dsymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 353 { | |
| 354 buf->writestring(toChars()); | |
| 355 } | |
| 356 | |
| 357 unsigned Dsymbol::size(Loc loc) | |
| 358 { | |
| 359 error("Dsymbol '%s' has no size\n", toChars()); | |
| 360 return 0; | |
| 361 } | |
| 362 | |
| 363 int Dsymbol::isforwardRef() | |
| 364 { | |
| 365 return FALSE; | |
| 366 } | |
| 367 | |
| 368 AggregateDeclaration *Dsymbol::isThis() | |
| 369 { | |
| 370 return NULL; | |
| 371 } | |
| 372 | |
| 373 ClassDeclaration *Dsymbol::isClassMember() // are we a member of a class? | |
| 374 { | |
| 375 Dsymbol *parent = toParent(); | |
| 376 if (parent && parent->isClassDeclaration()) | |
| 377 return (ClassDeclaration *)parent; | |
| 378 return NULL; | |
| 379 } | |
| 380 | |
| 381 void Dsymbol::defineRef(Dsymbol *s) | |
| 382 { | |
| 383 assert(0); | |
| 384 } | |
| 385 | |
| 386 int Dsymbol::isExport() | |
| 387 { | |
| 388 return FALSE; | |
| 389 } | |
| 390 | |
| 391 int Dsymbol::isImportedSymbol() | |
| 392 { | |
| 393 return FALSE; | |
| 394 } | |
| 395 | |
| 396 int Dsymbol::isDeprecated() | |
| 397 { | |
| 398 return FALSE; | |
| 399 } | |
| 400 | |
| 401 LabelDsymbol *Dsymbol::isLabel() // is this a LabelDsymbol()? | |
| 402 { | |
| 403 return NULL; | |
| 404 } | |
| 405 | |
| 406 AggregateDeclaration *Dsymbol::isMember() // is this a member of an AggregateDeclaration? | |
| 407 { | |
| 336 | 408 //printf("Dsymbol::isMember() %s\n", toChars()); |
| 159 | 409 Dsymbol *parent = toParent(); |
| 336 | 410 //printf("parent is %s %s\n", parent->kind(), parent->toChars()); |
| 159 | 411 return parent ? parent->isAggregateDeclaration() : NULL; |
| 412 } | |
| 413 | |
| 414 Type *Dsymbol::getType() | |
| 415 { | |
| 416 return NULL; | |
| 417 } | |
| 418 | |
| 419 int Dsymbol::needThis() | |
| 420 { | |
| 421 return FALSE; | |
| 422 } | |
| 423 | |
| 424 int Dsymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) | |
| 425 { | |
| 426 //printf("Dsymbol::addMember('%s')\n", toChars()); | |
| 427 //printf("Dsymbol::addMember(this = %p, '%s' scopesym = '%s')\n", this, toChars(), sd->toChars()); | |
| 428 //printf("Dsymbol::addMember(this = %p, '%s' sd = %p, sd->symtab = %p)\n", this, toChars(), sd, sd->symtab); | |
| 429 parent = sd; | |
| 430 if (!isAnonymous()) // no name, so can't add it to symbol table | |
| 431 { | |
| 432 if (!sd->symtab->insert(this)) // if name is already defined | |
| 433 { | |
| 434 Dsymbol *s2; | |
| 435 | |
| 436 s2 = sd->symtab->lookup(ident); | |
| 437 if (!s2->overloadInsert(this)) | |
| 438 { | |
| 439 sd->multiplyDefined(0, this, s2); | |
| 440 } | |
| 441 } | |
| 442 if (sd->isAggregateDeclaration() || sd->isEnumDeclaration()) | |
| 443 { | |
| 444 if (ident == Id::__sizeof || ident == Id::alignof || ident == Id::mangleof) | |
| 445 error(".%s property cannot be redefined", ident->toChars()); | |
| 446 } | |
| 447 return 1; | |
| 448 } | |
| 449 return 0; | |
| 450 } | |
| 451 | |
| 452 void Dsymbol::error(const char *format, ...) | |
| 453 { | |
| 454 //printf("Dsymbol::error()\n"); | |
| 455 if (!global.gag) | |
| 456 { | |
| 457 char *p = locToChars(); | |
| 458 | |
| 459 if (*p) | |
| 460 fprintf(stdmsg, "%s: ", p); | |
| 461 mem.free(p); | |
| 462 | |
|
427
f1d37dc5d354
Give errors originating from Dsymbol::error the proper 'Error:' heading.
Christian Kamm <kamm incasoftware de>
parents:
336
diff
changeset
|
463 fprintf(stdmsg, "Error: "); |
| 159 | 464 if (isAnonymous()) |
| 465 fprintf(stdmsg, "%s ", kind()); | |
| 466 else | |
| 467 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); | |
| 468 | |
| 469 va_list ap; | |
| 470 va_start(ap, format); | |
| 471 vfprintf(stdmsg, format, ap); | |
| 472 va_end(ap); | |
| 473 | |
| 474 fprintf(stdmsg, "\n"); | |
| 475 fflush(stdmsg); | |
| 476 } | |
| 477 global.errors++; | |
| 478 | |
| 479 //fatal(); | |
| 480 } | |
| 481 | |
| 482 void Dsymbol::error(Loc loc, const char *format, ...) | |
| 483 { | |
| 484 if (!global.gag) | |
| 485 { | |
| 486 char *p = loc.toChars(); | |
| 487 if (!*p) | |
| 488 p = locToChars(); | |
| 489 | |
| 490 if (*p) | |
| 491 fprintf(stdmsg, "%s: ", p); | |
| 492 mem.free(p); | |
| 493 | |
|
427
f1d37dc5d354
Give errors originating from Dsymbol::error the proper 'Error:' heading.
Christian Kamm <kamm incasoftware de>
parents:
336
diff
changeset
|
494 fprintf(stdmsg, "Error: "); |
| 159 | 495 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); |
| 496 | |
| 497 va_list ap; | |
| 498 va_start(ap, format); | |
| 499 vfprintf(stdmsg, format, ap); | |
| 500 va_end(ap); | |
| 501 | |
| 502 fprintf(stdmsg, "\n"); | |
| 503 fflush(stdmsg); | |
| 504 } | |
| 505 | |
| 506 global.errors++; | |
| 507 | |
| 508 //fatal(); | |
| 509 } | |
| 510 | |
| 511 void Dsymbol::checkDeprecated(Loc loc, Scope *sc) | |
| 512 { | |
| 513 if (!global.params.useDeprecated && isDeprecated()) | |
| 514 { | |
| 515 // Don't complain if we're inside a deprecated symbol's scope | |
| 516 for (Dsymbol *sp = sc->parent; sp; sp = sp->parent) | |
| 517 { if (sp->isDeprecated()) | |
| 518 return; | |
| 519 } | |
| 520 | |
| 521 for (; sc; sc = sc->enclosing) | |
| 522 { | |
| 523 if (sc->scopesym && sc->scopesym->isDeprecated()) | |
| 524 return; | |
| 336 | 525 |
| 526 // If inside a StorageClassDeclaration that is deprecated | |
| 527 if (sc->stc & STCdeprecated) | |
| 528 return; | |
| 159 | 529 } |
| 530 | |
| 531 error(loc, "is deprecated"); | |
| 532 } | |
| 533 } | |
| 534 | |
| 535 /********************************** | |
| 536 * Determine which Module a Dsymbol is in. | |
| 537 */ | |
| 538 | |
| 539 Module *Dsymbol::getModule() | |
| 540 { | |
| 541 Module *m; | |
| 542 Dsymbol *s; | |
| 543 | |
| 544 //printf("Dsymbol::getModule()\n"); | |
| 545 s = this; | |
| 546 while (s) | |
| 547 { | |
| 548 //printf("\ts = '%s'\n", s->toChars()); | |
| 549 m = s->isModule(); | |
| 550 if (m) | |
| 551 return m; | |
| 552 s = s->parent; | |
| 553 } | |
| 554 return NULL; | |
| 555 } | |
| 556 | |
| 557 /************************************* | |
| 558 */ | |
| 559 | |
| 560 enum PROT Dsymbol::prot() | |
| 561 { | |
| 562 return PROTpublic; | |
| 563 } | |
| 564 | |
| 565 /************************************* | |
| 566 * Do syntax copy of an array of Dsymbol's. | |
| 567 */ | |
| 568 | |
| 569 | |
| 570 Array *Dsymbol::arraySyntaxCopy(Array *a) | |
| 571 { | |
| 572 | |
| 573 Array *b = NULL; | |
| 574 if (a) | |
| 575 { | |
| 576 b = a->copy(); | |
| 577 for (int i = 0; i < b->dim; i++) | |
| 578 { | |
| 579 Dsymbol *s = (Dsymbol *)b->data[i]; | |
| 580 | |
| 581 s = s->syntaxCopy(NULL); | |
| 582 b->data[i] = (void *)s; | |
| 583 } | |
| 584 } | |
| 585 return b; | |
| 586 } | |
| 587 | |
| 588 | |
| 589 /**************************************** | |
| 590 * Add documentation comment to Dsymbol. | |
| 591 * Ignore NULL comments. | |
| 592 */ | |
| 593 | |
| 594 void Dsymbol::addComment(unsigned char *comment) | |
| 595 { | |
| 596 // if (comment) | |
| 597 // printf("adding comment '%s' to symbol %p '%s'\n", comment, this, toChars()); | |
| 598 | |
| 599 if (!this->comment) | |
| 600 this->comment = comment; | |
| 601 #if 1 | |
| 602 else if (comment && strcmp((char *)comment, (char *)this->comment)) | |
| 603 { // Concatenate the two | |
| 604 this->comment = Lexer::combineComments(this->comment, comment); | |
| 605 } | |
| 606 #endif | |
| 607 } | |
| 608 | |
| 609 | |
| 610 /********************************* ScopeDsymbol ****************************/ | |
| 611 | |
| 612 ScopeDsymbol::ScopeDsymbol() | |
| 613 : Dsymbol() | |
| 614 { | |
| 615 members = NULL; | |
| 616 symtab = NULL; | |
| 617 imports = NULL; | |
| 618 prots = NULL; | |
| 619 } | |
| 620 | |
| 621 ScopeDsymbol::ScopeDsymbol(Identifier *id) | |
| 622 : Dsymbol(id) | |
| 623 { | |
| 624 members = NULL; | |
| 625 symtab = NULL; | |
| 626 imports = NULL; | |
| 627 prots = NULL; | |
| 628 } | |
| 629 | |
| 630 Dsymbol *ScopeDsymbol::syntaxCopy(Dsymbol *s) | |
| 631 { | |
| 632 //printf("ScopeDsymbol::syntaxCopy('%s')\n", toChars()); | |
| 633 | |
| 634 ScopeDsymbol *sd; | |
| 635 if (s) | |
| 636 sd = (ScopeDsymbol *)s; | |
| 637 else | |
| 638 sd = new ScopeDsymbol(ident); | |
| 639 sd->members = arraySyntaxCopy(members); | |
| 640 return sd; | |
| 641 } | |
| 642 | |
| 643 Dsymbol *ScopeDsymbol::search(Loc loc, Identifier *ident, int flags) | |
| 336 | 644 { |
| 645 //printf("%s->ScopeDsymbol::search(ident='%s', flags=x%x)\n", toChars(), ident->toChars(), flags); | |
| 159 | 646 |
| 647 // Look in symbols declared in this module | |
| 336 | 648 Dsymbol *s = symtab ? symtab->lookup(ident) : NULL; |
|
626
e83ba4ae4878
Fix import visibility bugs 313 and 314.
Christian Kamm <kamm incasoftware de>
parents:
443
diff
changeset
|
649 |
|
e83ba4ae4878
Fix import visibility bugs 313 and 314.
Christian Kamm <kamm incasoftware de>
parents:
443
diff
changeset
|
650 // hide private nonlocal symbols |
|
e83ba4ae4878
Fix import visibility bugs 313 and 314.
Christian Kamm <kamm incasoftware de>
parents:
443
diff
changeset
|
651 if (flags & 1 && s && s->prot() == PROTprivate) |
|
e83ba4ae4878
Fix import visibility bugs 313 and 314.
Christian Kamm <kamm incasoftware de>
parents:
443
diff
changeset
|
652 s = NULL; |
|
e83ba4ae4878
Fix import visibility bugs 313 and 314.
Christian Kamm <kamm incasoftware de>
parents:
443
diff
changeset
|
653 |
| 159 | 654 if (s) |
| 655 { | |
| 656 //printf("\ts = '%s.%s'\n",toChars(),s->toChars()); | |
| 657 } | |
| 658 else if (imports) | |
| 659 { | |
| 660 // Look in imported modules | |
| 336 | 661 for (int i = 0; i < imports->dim; i++) |
| 159 | 662 { ScopeDsymbol *ss = (ScopeDsymbol *)imports->data[i]; |
| 663 Dsymbol *s2; | |
| 664 | |
| 665 // If private import, don't search it | |
| 666 if (flags & 1 && prots[i] == PROTprivate) | |
| 667 continue; | |
| 668 | |
| 669 //printf("\tscanning import '%s', prots = %d, isModule = %p, isImport = %p\n", ss->toChars(), prots[i], ss->isModule(), ss->isImport()); | |
| 336 | 670 /* Don't find private members if ss is a module |
| 671 */ | |
| 159 | 672 s2 = ss->search(loc, ident, ss->isModule() ? 1 : 0); |
| 673 if (!s) | |
| 674 s = s2; | |
| 675 else if (s2 && s != s2) | |
| 676 { | |
| 677 if (s->toAlias() == s2->toAlias()) | |
| 678 { | |
| 336 | 679 /* After following aliases, we found the same symbol, |
| 680 * so it's not an ambiguity. | |
| 681 * But if one alias is deprecated, prefer the other. | |
| 682 */ | |
| 159 | 683 if (s->isDeprecated()) |
| 684 s = s2; | |
| 685 } | |
| 686 else | |
| 687 { | |
| 688 /* Two imports of the same module should be regarded as | |
| 689 * the same. | |
| 690 */ | |
| 691 Import *i1 = s->isImport(); | |
| 692 Import *i2 = s2->isImport(); | |
| 693 if (!(i1 && i2 && | |
| 694 (i1->mod == i2->mod || | |
| 695 (!i1->parent->isImport() && !i2->parent->isImport() && | |
| 696 i1->ident->equals(i2->ident)) | |
| 697 ) | |
| 698 ) | |
| 699 ) | |
| 700 { | |
| 701 ss->multiplyDefined(loc, s, s2); | |
| 702 break; | |
| 703 } | |
| 704 } | |
| 705 } | |
| 706 } | |
| 707 if (s) | |
| 708 { | |
| 709 Declaration *d = s->isDeclaration(); | |
| 710 if (d && d->protection == PROTprivate && !d->parent->isTemplateMixin()) | |
| 711 error("%s is private", d->toPrettyChars()); | |
| 712 } | |
| 713 } | |
| 714 return s; | |
| 715 } | |
| 716 | |
| 717 void ScopeDsymbol::importScope(ScopeDsymbol *s, enum PROT protection) | |
| 718 { | |
| 719 //printf("%s->ScopeDsymbol::importScope(%s, %d)\n", toChars(), s->toChars(), protection); | |
| 720 | |
| 721 // No circular or redundant import's | |
| 722 if (s != this) | |
| 723 { | |
| 724 if (!imports) | |
| 725 imports = new Array(); | |
| 726 else | |
| 727 { | |
| 728 for (int i = 0; i < imports->dim; i++) | |
| 729 { ScopeDsymbol *ss; | |
| 730 | |
| 731 ss = (ScopeDsymbol *) imports->data[i]; | |
| 732 if (ss == s) | |
| 733 { | |
| 734 if (protection > prots[i]) | |
| 735 prots[i] = protection; // upgrade access | |
| 736 return; | |
| 737 } | |
| 738 } | |
| 739 } | |
| 740 imports->push(s); | |
| 741 prots = (unsigned char *)mem.realloc(prots, imports->dim * sizeof(prots[0])); | |
| 742 prots[imports->dim - 1] = protection; | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 int ScopeDsymbol::isforwardRef() | |
| 747 { | |
| 748 return (members == NULL); | |
| 749 } | |
| 750 | |
| 751 void ScopeDsymbol::defineRef(Dsymbol *s) | |
| 752 { | |
| 753 ScopeDsymbol *ss; | |
| 754 | |
| 755 ss = s->isScopeDsymbol(); | |
| 756 members = ss->members; | |
| 757 ss->members = NULL; | |
| 758 } | |
| 759 | |
| 760 void ScopeDsymbol::multiplyDefined(Loc loc, Dsymbol *s1, Dsymbol *s2) | |
| 761 { | |
| 762 #if 0 | |
| 763 printf("ScopeDsymbol::multiplyDefined()\n"); | |
| 764 printf("s1 = %p, '%s' kind = '%s', parent = %s\n", s1, s1->toChars(), s1->kind(), s1->parent ? s1->parent->toChars() : ""); | |
| 765 printf("s2 = %p, '%s' kind = '%s', parent = %s\n", s2, s2->toChars(), s2->kind(), s2->parent ? s2->parent->toChars() : ""); | |
| 766 #endif | |
| 767 if (loc.filename) | |
| 768 { ::error(loc, "%s at %s conflicts with %s at %s", | |
| 769 s1->toPrettyChars(), | |
| 770 s1->locToChars(), | |
| 771 s2->toPrettyChars(), | |
| 772 s2->locToChars()); | |
| 773 } | |
| 774 else | |
| 775 { | |
| 776 s1->error(loc, "conflicts with %s %s at %s", | |
| 777 s2->kind(), | |
| 778 s2->toPrettyChars(), | |
| 779 s2->locToChars()); | |
| 780 } | |
| 781 } | |
| 782 | |
| 783 Dsymbol *ScopeDsymbol::nameCollision(Dsymbol *s) | |
| 784 { | |
| 785 Dsymbol *sprev; | |
| 786 | |
| 787 // Look to see if we are defining a forward referenced symbol | |
| 788 | |
| 789 sprev = symtab->lookup(s->ident); | |
| 790 assert(sprev); | |
| 791 if (s->equals(sprev)) // if the same symbol | |
| 792 { | |
| 793 if (s->isforwardRef()) // if second declaration is a forward reference | |
| 794 return sprev; | |
| 795 if (sprev->isforwardRef()) | |
| 796 { | |
| 797 sprev->defineRef(s); // copy data from s into sprev | |
| 798 return sprev; | |
| 799 } | |
| 800 } | |
| 801 multiplyDefined(0, s, sprev); | |
| 802 return sprev; | |
| 803 } | |
| 804 | |
| 336 | 805 const char *ScopeDsymbol::kind() |
| 159 | 806 { |
| 807 return "ScopeDsymbol"; | |
| 808 } | |
| 809 | |
| 810 | |
| 811 /******************************************* | |
| 812 * Look for member of the form: | |
| 813 * const(MemberInfo)[] getMembers(string); | |
| 814 * Returns NULL if not found | |
| 815 */ | |
| 816 | |
| 336 | 817 #if DMDV2 |
| 159 | 818 FuncDeclaration *ScopeDsymbol::findGetMembers() |
| 819 { | |
| 820 Dsymbol *s = search_function(this, Id::getmembers); | |
| 821 FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL; | |
| 822 | |
| 823 #if 0 // Finish | |
| 824 static TypeFunction *tfgetmembers; | |
| 825 | |
| 826 if (!tfgetmembers) | |
| 827 { | |
| 828 Scope sc; | |
| 829 Arguments *arguments = new Arguments; | |
| 830 Arguments *arg = new Argument(STCin, Type::tchar->constOf()->arrayOf(), NULL, NULL); | |
| 831 arguments->push(arg); | |
| 832 | |
| 833 Type *tret = NULL; | |
| 834 tfgetmembers = new TypeFunction(arguments, tret, 0, LINKd); | |
| 835 tfgetmembers = (TypeFunction *)tfgetmembers->semantic(0, &sc); | |
| 836 } | |
| 837 if (fdx) | |
| 838 fdx = fdx->overloadExactMatch(tfgetmembers); | |
| 839 #endif | |
| 840 if (fdx && fdx->isVirtual()) | |
| 841 fdx = NULL; | |
| 842 | |
| 843 return fdx; | |
| 844 } | |
| 845 #endif | |
| 846 | |
| 847 | |
| 848 /****************************** WithScopeSymbol ******************************/ | |
| 849 | |
| 850 WithScopeSymbol::WithScopeSymbol(WithStatement *withstate) | |
| 851 : ScopeDsymbol() | |
| 852 { | |
| 853 this->withstate = withstate; | |
| 854 } | |
| 855 | |
| 856 Dsymbol *WithScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 857 { | |
| 858 // Acts as proxy to the with class declaration | |
| 859 return withstate->exp->type->toDsymbol(NULL)->search(loc, ident, 0); | |
| 860 } | |
| 861 | |
| 862 /****************************** ArrayScopeSymbol ******************************/ | |
| 863 | |
| 864 ArrayScopeSymbol::ArrayScopeSymbol(Expression *e) | |
| 865 : ScopeDsymbol() | |
| 866 { | |
| 867 assert(e->op == TOKindex || e->op == TOKslice); | |
| 868 exp = e; | |
| 869 type = NULL; | |
| 870 td = NULL; | |
| 871 } | |
| 872 | |
| 873 ArrayScopeSymbol::ArrayScopeSymbol(TypeTuple *t) | |
| 874 : ScopeDsymbol() | |
| 875 { | |
| 876 exp = NULL; | |
| 877 type = t; | |
| 878 td = NULL; | |
| 879 } | |
| 880 | |
| 881 ArrayScopeSymbol::ArrayScopeSymbol(TupleDeclaration *s) | |
| 882 : ScopeDsymbol() | |
| 883 { | |
| 884 exp = NULL; | |
| 885 type = NULL; | |
| 886 td = s; | |
| 887 } | |
| 888 | |
| 889 Dsymbol *ArrayScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 890 { | |
| 891 //printf("ArrayScopeSymbol::search('%s', flags = %d)\n", ident->toChars(), flags); | |
| 892 if (ident == Id::length || ident == Id::dollar) | |
| 893 { VarDeclaration **pvar; | |
| 894 Expression *ce; | |
| 895 | |
| 896 L1: | |
| 897 | |
| 898 if (td) | |
| 899 { | |
| 900 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 901 Expression *e = new IntegerExp(0, td->objects->dim, Type::tsize_t); | |
| 902 v->init = new ExpInitializer(0, e); | |
| 903 v->storage_class |= STCconst; | |
| 904 return v; | |
| 905 } | |
| 906 | |
| 907 if (type) | |
| 908 { | |
| 909 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 910 Expression *e = new IntegerExp(0, type->arguments->dim, Type::tsize_t); | |
| 911 v->init = new ExpInitializer(0, e); | |
| 912 v->storage_class |= STCconst; | |
| 913 return v; | |
| 914 } | |
| 915 | |
| 916 if (exp->op == TOKindex) | |
| 917 { | |
| 918 IndexExp *ie = (IndexExp *)exp; | |
| 919 | |
| 920 pvar = &ie->lengthVar; | |
| 921 ce = ie->e1; | |
| 922 } | |
| 923 else if (exp->op == TOKslice) | |
| 924 { | |
| 925 SliceExp *se = (SliceExp *)exp; | |
| 926 | |
| 927 pvar = &se->lengthVar; | |
| 928 ce = se->e1; | |
| 929 } | |
| 930 else | |
| 931 return NULL; | |
| 932 | |
| 933 if (ce->op == TOKtype) | |
| 934 { | |
| 935 Type *t = ((TypeExp *)ce)->type; | |
| 936 if (t->ty == Ttuple) | |
| 937 { type = (TypeTuple *)t; | |
| 938 goto L1; | |
| 939 } | |
| 940 } | |
| 941 | |
| 942 if (!*pvar) | |
| 943 { | |
| 944 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 945 | |
| 946 if (ce->op == TOKstring) | |
| 947 { /* It is for a string literal, so the | |
| 948 * length will be a const. | |
| 949 */ | |
| 950 Expression *e = new IntegerExp(0, ((StringExp *)ce)->len, Type::tsize_t); | |
| 951 v->init = new ExpInitializer(0, e); | |
| 952 v->storage_class |= STCconst; | |
| 953 } | |
| 954 else if (ce->op == TOKarrayliteral) | |
| 955 { /* It is for an array literal, so the | |
| 956 * length will be a const. | |
| 957 */ | |
| 958 Expression *e = new IntegerExp(0, ((ArrayLiteralExp *)ce)->elements->dim, Type::tsize_t); | |
| 959 v->init = new ExpInitializer(0, e); | |
| 960 v->storage_class |= STCconst; | |
| 961 } | |
| 962 else if (ce->op == TOKtuple) | |
| 963 { /* It is for an expression tuple, so the | |
| 964 * length will be a const. | |
| 965 */ | |
| 966 Expression *e = new IntegerExp(0, ((TupleExp *)ce)->exps->dim, Type::tsize_t); | |
| 967 v->init = new ExpInitializer(0, e); | |
| 968 v->storage_class |= STCconst; | |
| 969 } | |
| 970 *pvar = v; | |
| 971 } | |
| 972 return (*pvar); | |
| 973 } | |
| 974 return NULL; | |
| 975 } | |
| 976 | |
| 977 | |
| 978 /****************************** DsymbolTable ******************************/ | |
| 979 | |
| 980 DsymbolTable::DsymbolTable() | |
| 981 { | |
| 982 tab = new StringTable; | |
| 983 } | |
| 984 | |
| 985 DsymbolTable::~DsymbolTable() | |
| 986 { | |
| 987 delete tab; | |
| 988 } | |
| 989 | |
| 990 Dsymbol *DsymbolTable::lookup(Identifier *ident) | |
| 991 { StringValue *sv; | |
| 992 | |
| 993 #ifdef DEBUG | |
| 994 assert(ident); | |
| 995 assert(tab); | |
| 996 #endif | |
| 997 sv = tab->lookup((char*)ident->string, ident->len); | |
| 998 return (Dsymbol *)(sv ? sv->ptrvalue : NULL); | |
| 999 } | |
| 1000 | |
| 1001 Dsymbol *DsymbolTable::insert(Dsymbol *s) | |
| 1002 { StringValue *sv; | |
| 1003 Identifier *ident; | |
| 1004 | |
| 1005 //printf("DsymbolTable::insert(this = %p, '%s')\n", this, s->ident->toChars()); | |
| 1006 ident = s->ident; | |
| 1007 #ifdef DEBUG | |
| 1008 assert(ident); | |
| 1009 assert(tab); | |
| 1010 #endif | |
| 1011 sv = tab->insert(ident->toChars(), ident->len); | |
| 1012 if (!sv) | |
| 1013 return NULL; // already in table | |
| 1014 sv->ptrvalue = s; | |
| 1015 return s; | |
| 1016 } | |
| 1017 | |
| 1018 Dsymbol *DsymbolTable::insert(Identifier *ident, Dsymbol *s) | |
| 1019 { StringValue *sv; | |
| 1020 | |
| 1021 //printf("DsymbolTable::insert()\n"); | |
| 1022 sv = tab->insert(ident->toChars(), ident->len); | |
| 1023 if (!sv) | |
| 1024 return NULL; // already in table | |
| 1025 sv->ptrvalue = s; | |
| 1026 return s; | |
| 1027 } | |
| 1028 | |
| 1029 Dsymbol *DsymbolTable::update(Dsymbol *s) | |
| 1030 { StringValue *sv; | |
| 1031 Identifier *ident; | |
| 1032 | |
| 1033 ident = s->ident; | |
| 1034 sv = tab->update(ident->toChars(), ident->len); | |
| 1035 sv->ptrvalue = s; | |
| 1036 return s; | |
| 1037 } | |
| 1038 | |
| 1039 | |
| 1040 | |
| 1041 |