Mercurial > projects > ldc
annotate dmd/dsymbol.c @ 1587:def7a1d494fd
Merge DMD 1.051
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Fri, 06 Nov 2009 23:58:01 +0100 |
| parents | 78038e540342 |
| children | 207a8a438dea |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 1587 | 3 // Copyright (c) 1999-2009 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 | |
|
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15 #include "rmem.h" |
| 159 | 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" | |
| 1587 | 31 #include "attrib.h" |
| 159 | 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; | |
|
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42 #if IN_DMD |
| 159 | 43 this->csym = NULL; |
| 44 this->isym = NULL; | |
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45 #endif |
| 159 | 46 this->loc = 0; |
| 47 this->comment = NULL; | |
| 1587 | 48 this->scope = NULL; |
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49 #if IN_LLVM |
| 159 | 50 this->llvmInternal = LLVMnone; |
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51 this->irsym = NULL; |
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52 #endif |
| 159 | 53 } |
| 54 | |
| 55 Dsymbol::Dsymbol(Identifier *ident) | |
| 56 { | |
| 57 //printf("Dsymbol::Dsymbol(%p, ident)\n", this); | |
| 58 this->ident = ident; | |
| 59 this->c_ident = NULL; | |
| 60 this->parent = NULL; | |
|
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61 #if IN_DMD |
| 159 | 62 this->csym = NULL; |
| 63 this->isym = NULL; | |
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64 #endif |
| 159 | 65 this->loc = 0; |
| 66 this->comment = NULL; | |
| 1587 | 67 this->scope = NULL; |
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68 #if IN_LLVM |
| 159 | 69 this->llvmInternal = LLVMnone; |
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70 this->irsym = NULL; |
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71 #endif |
| 159 | 72 } |
| 73 | |
| 74 int Dsymbol::equals(Object *o) | |
| 75 { Dsymbol *s; | |
| 76 | |
| 77 if (this == o) | |
| 78 return TRUE; | |
| 79 s = (Dsymbol *)(o); | |
| 80 if (s && ident->equals(s->ident)) | |
| 81 return TRUE; | |
| 82 return FALSE; | |
| 83 } | |
| 84 | |
| 85 /************************************** | |
| 86 * Copy the syntax. | |
| 87 * Used for template instantiations. | |
| 88 * If s is NULL, allocate the new object, otherwise fill it in. | |
| 89 */ | |
| 90 | |
| 91 Dsymbol *Dsymbol::syntaxCopy(Dsymbol *s) | |
| 92 { | |
| 93 print(); | |
| 94 printf("%s %s\n", kind(), toChars()); | |
| 95 assert(0); | |
| 96 return NULL; | |
| 97 } | |
| 98 | |
| 99 /************************************** | |
| 100 * Determine if this symbol is only one. | |
| 101 * Returns: | |
| 102 * FALSE, *ps = NULL: There are 2 or more symbols | |
| 103 * TRUE, *ps = NULL: There are zero symbols | |
| 104 * TRUE, *ps = symbol: The one and only one symbol | |
| 105 */ | |
| 106 | |
| 107 int Dsymbol::oneMember(Dsymbol **ps) | |
| 108 { | |
| 109 //printf("Dsymbol::oneMember()\n"); | |
| 110 *ps = this; | |
| 111 return TRUE; | |
| 112 } | |
| 113 | |
| 114 /***************************************** | |
| 115 * Same as Dsymbol::oneMember(), but look at an array of Dsymbols. | |
| 116 */ | |
| 117 | |
| 118 int Dsymbol::oneMembers(Array *members, Dsymbol **ps) | |
| 119 { | |
| 120 //printf("Dsymbol::oneMembers() %d\n", members ? members->dim : 0); | |
| 121 Dsymbol *s = NULL; | |
| 122 | |
| 123 if (members) | |
| 124 { | |
| 125 for (int i = 0; i < members->dim; i++) | |
| 126 { Dsymbol *sx = (Dsymbol *)members->data[i]; | |
| 127 | |
| 128 int x = sx->oneMember(ps); | |
| 129 //printf("\t[%d] kind %s = %d, s = %p\n", i, sx->kind(), x, *ps); | |
| 130 if (!x) | |
| 131 { | |
| 132 //printf("\tfalse 1\n"); | |
| 133 assert(*ps == NULL); | |
| 134 return FALSE; | |
| 135 } | |
| 136 if (*ps) | |
| 137 { | |
| 138 if (s) // more than one symbol | |
| 139 { *ps = NULL; | |
| 140 //printf("\tfalse 2\n"); | |
| 141 return FALSE; | |
| 142 } | |
| 143 s = *ps; | |
| 144 } | |
| 145 } | |
| 146 } | |
| 147 *ps = s; // s is the one symbol, NULL if none | |
| 148 //printf("\ttrue\n"); | |
| 149 return TRUE; | |
| 150 } | |
| 151 | |
| 152 /***************************************** | |
| 153 * Is Dsymbol a variable that contains pointers? | |
| 154 */ | |
| 155 | |
| 156 int Dsymbol::hasPointers() | |
| 157 { | |
| 158 //printf("Dsymbol::hasPointers() %s\n", toChars()); | |
| 159 return 0; | |
| 160 } | |
| 161 | |
| 162 char *Dsymbol::toChars() | |
| 163 { | |
| 164 return ident ? ident->toChars() : (char *)"__anonymous"; | |
| 165 } | |
| 166 | |
| 1587 | 167 const char *Dsymbol::toPrettyChars() |
| 159 | 168 { Dsymbol *p; |
| 169 char *s; | |
| 170 char *q; | |
| 171 size_t len; | |
| 172 | |
| 173 //printf("Dsymbol::toPrettyChars() '%s'\n", toChars()); | |
| 174 if (!parent) | |
| 175 return toChars(); | |
| 176 | |
| 177 len = 0; | |
| 178 for (p = this; p; p = p->parent) | |
| 179 len += strlen(p->toChars()) + 1; | |
| 180 | |
| 181 s = (char *)mem.malloc(len); | |
| 182 q = s + len - 1; | |
| 183 *q = 0; | |
| 184 for (p = this; p; p = p->parent) | |
| 185 { | |
| 186 char *t = p->toChars(); | |
| 187 len = strlen(t); | |
| 188 q -= len; | |
| 189 memcpy(q, t, len); | |
| 190 if (q == s) | |
| 191 break; | |
| 192 q--; | |
| 1587 | 193 #if TARGET_NET |
| 194 if (AggregateDeclaration* ad = p->isAggregateDeclaration()) | |
| 195 { | |
| 196 if (ad->isNested() && p->parent && p->parent->isAggregateDeclaration()) | |
| 197 { | |
| 198 *q = '/'; | |
| 199 continue; | |
| 200 } | |
| 201 } | |
| 202 #endif | |
| 159 | 203 *q = '.'; |
| 204 } | |
| 205 return s; | |
| 206 } | |
| 207 | |
| 208 char *Dsymbol::locToChars() | |
| 209 { | |
| 210 OutBuffer buf; | |
| 211 char *p; | |
| 212 | |
| 213 Module *m = getModule(); | |
| 214 | |
| 215 if (m && m->srcfile) | |
| 216 loc.filename = m->srcfile->toChars(); | |
| 217 return loc.toChars(); | |
| 218 } | |
| 219 | |
| 336 | 220 const char *Dsymbol::kind() |
| 159 | 221 { |
| 222 return "symbol"; | |
| 223 } | |
| 224 | |
| 225 /********************************* | |
| 226 * If this symbol is really an alias for another, | |
| 227 * return that other. | |
| 228 */ | |
| 229 | |
| 230 Dsymbol *Dsymbol::toAlias() | |
| 231 { | |
| 232 return this; | |
| 233 } | |
| 234 | |
| 235 Dsymbol *Dsymbol::toParent() | |
| 236 { | |
| 237 return parent ? parent->pastMixin() : NULL; | |
| 238 } | |
| 239 | |
| 240 Dsymbol *Dsymbol::pastMixin() | |
| 241 { | |
| 242 Dsymbol *s = this; | |
| 243 | |
| 244 //printf("Dsymbol::pastMixin() %s\n", toChars()); | |
| 245 while (s && s->isTemplateMixin()) | |
| 246 s = s->parent; | |
| 247 return s; | |
| 248 } | |
| 249 | |
| 250 /********************************** | |
| 251 * Use this instead of toParent() when looking for the | |
| 252 * 'this' pointer of the enclosing function/class. | |
| 253 */ | |
| 254 | |
| 255 Dsymbol *Dsymbol::toParent2() | |
| 256 { | |
| 257 Dsymbol *s = parent; | |
| 258 while (s && s->isTemplateInstance()) | |
| 259 s = s->parent; | |
| 260 return s; | |
| 261 } | |
| 262 | |
| 336 | 263 TemplateInstance *Dsymbol::inTemplateInstance() |
| 264 { | |
| 265 for (Dsymbol *parent = this->parent; parent; parent = parent->parent) | |
| 266 { | |
| 267 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 268 if (ti) | |
| 269 return ti; | |
| 270 } | |
| 271 return NULL; | |
| 272 } | |
| 159 | 273 |
| 274 int Dsymbol::isAnonymous() | |
| 275 { | |
| 276 return ident ? 0 : 1; | |
| 277 } | |
| 278 | |
| 1587 | 279 /************************************* |
| 280 * Set scope for future semantic analysis so we can | |
| 281 * deal better with forward references. | |
| 282 */ | |
| 283 | |
| 284 void Dsymbol::setScope(Scope *sc) | |
| 285 { | |
| 286 //printf("Dsymbol::setScope() %p %s\n", this, toChars()); | |
| 287 if (!sc->nofree) | |
| 288 sc->setNoFree(); // may need it even after semantic() finishes | |
| 289 scope = sc; | |
| 290 } | |
| 291 | |
| 292 void Dsymbol::importAll(Scope *sc) | |
| 293 { | |
| 294 } | |
| 295 | |
| 296 /************************************* | |
| 297 * Does semantic analysis on the public face of declarations. | |
| 298 */ | |
| 299 | |
| 159 | 300 void Dsymbol::semantic(Scope *sc) |
| 301 { | |
| 302 error("%p has no semantic routine", this); | |
| 303 } | |
| 304 | |
| 1587 | 305 /************************************* |
| 306 * Does semantic analysis on initializers and members of aggregates. | |
| 307 */ | |
| 308 | |
| 159 | 309 void Dsymbol::semantic2(Scope *sc) |
| 310 { | |
| 311 // Most Dsymbols have no further semantic analysis needed | |
| 312 } | |
| 313 | |
| 1587 | 314 /************************************* |
| 315 * Does semantic analysis on function bodies. | |
| 316 */ | |
| 317 | |
| 159 | 318 void Dsymbol::semantic3(Scope *sc) |
| 319 { | |
| 320 // Most Dsymbols have no further semantic analysis needed | |
| 321 } | |
| 322 | |
| 1587 | 323 /************************************* |
| 324 * Look for function inlining possibilities. | |
| 325 */ | |
| 326 | |
| 159 | 327 void Dsymbol::inlineScan() |
| 328 { | |
| 1587 | 329 // Most Dsymbols aren't functions |
| 159 | 330 } |
| 331 | |
| 336 | 332 /********************************************* |
| 333 * Search for ident as member of s. | |
| 334 * Input: | |
| 335 * flags: 1 don't find private members | |
| 336 * 2 don't give error messages | |
| 337 * 4 return NULL if ambiguous | |
| 338 * Returns: | |
| 339 * NULL if not found | |
| 340 */ | |
| 341 | |
| 159 | 342 Dsymbol *Dsymbol::search(Loc loc, Identifier *ident, int flags) |
| 343 { | |
| 344 //printf("Dsymbol::search(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 345 return NULL; | |
| 346 } | |
| 347 | |
| 348 /*************************************** | |
| 349 * Search for identifier id as a member of 'this'. | |
| 350 * id may be a template instance. | |
| 351 * Returns: | |
| 352 * symbol found, NULL if not | |
| 353 */ | |
| 354 | |
| 355 Dsymbol *Dsymbol::searchX(Loc loc, Scope *sc, Identifier *id) | |
| 356 { | |
| 357 //printf("Dsymbol::searchX(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 358 Dsymbol *s = toAlias(); | |
| 359 Dsymbol *sm; | |
| 360 | |
| 361 switch (id->dyncast()) | |
| 362 { | |
| 363 case DYNCAST_IDENTIFIER: | |
| 364 sm = s->search(loc, id, 0); | |
| 365 break; | |
| 366 | |
| 367 case DYNCAST_DSYMBOL: | |
| 368 { // It's a template instance | |
| 369 //printf("\ttemplate instance id\n"); | |
| 370 Dsymbol *st = (Dsymbol *)id; | |
| 371 TemplateInstance *ti = st->isTemplateInstance(); | |
| 372 id = ti->name; | |
| 373 sm = s->search(loc, id, 0); | |
| 374 if (!sm) | |
| 375 { error("template identifier %s is not a member of %s %s", | |
| 376 id->toChars(), s->kind(), s->toChars()); | |
| 377 return NULL; | |
| 378 } | |
| 379 sm = sm->toAlias(); | |
| 380 TemplateDeclaration *td = sm->isTemplateDeclaration(); | |
| 381 if (!td) | |
| 382 { | |
| 383 error("%s is not a template, it is a %s", id->toChars(), sm->kind()); | |
| 384 return NULL; | |
| 385 } | |
| 386 ti->tempdecl = td; | |
| 1587 | 387 if (!ti->semanticRun) |
| 159 | 388 ti->semantic(sc); |
| 389 sm = ti->toAlias(); | |
| 390 break; | |
| 391 } | |
| 392 | |
| 393 default: | |
| 394 assert(0); | |
| 395 } | |
| 396 return sm; | |
| 397 } | |
| 398 | |
| 399 int Dsymbol::overloadInsert(Dsymbol *s) | |
| 400 { | |
| 401 //printf("Dsymbol::overloadInsert('%s')\n", s->toChars()); | |
| 402 return FALSE; | |
| 403 } | |
| 404 | |
| 405 void Dsymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 406 { | |
| 407 buf->writestring(toChars()); | |
| 408 } | |
| 409 | |
| 410 unsigned Dsymbol::size(Loc loc) | |
| 411 { | |
| 412 error("Dsymbol '%s' has no size\n", toChars()); | |
| 413 return 0; | |
| 414 } | |
| 415 | |
| 416 int Dsymbol::isforwardRef() | |
| 417 { | |
| 418 return FALSE; | |
| 419 } | |
| 420 | |
| 421 AggregateDeclaration *Dsymbol::isThis() | |
| 422 { | |
| 423 return NULL; | |
| 424 } | |
| 425 | |
| 426 ClassDeclaration *Dsymbol::isClassMember() // are we a member of a class? | |
| 427 { | |
| 428 Dsymbol *parent = toParent(); | |
| 429 if (parent && parent->isClassDeclaration()) | |
| 430 return (ClassDeclaration *)parent; | |
| 431 return NULL; | |
| 432 } | |
| 433 | |
| 434 void Dsymbol::defineRef(Dsymbol *s) | |
| 435 { | |
| 436 assert(0); | |
| 437 } | |
| 438 | |
| 439 int Dsymbol::isExport() | |
| 440 { | |
| 441 return FALSE; | |
| 442 } | |
| 443 | |
| 444 int Dsymbol::isImportedSymbol() | |
| 445 { | |
| 446 return FALSE; | |
| 447 } | |
| 448 | |
| 449 int Dsymbol::isDeprecated() | |
| 450 { | |
| 451 return FALSE; | |
| 452 } | |
| 453 | |
| 1587 | 454 #if DMDV2 |
| 455 int Dsymbol::isOverloadable() | |
| 456 { | |
| 457 return 0; | |
| 458 } | |
| 459 #endif | |
| 460 | |
| 159 | 461 LabelDsymbol *Dsymbol::isLabel() // is this a LabelDsymbol()? |
| 462 { | |
| 463 return NULL; | |
| 464 } | |
| 465 | |
| 466 AggregateDeclaration *Dsymbol::isMember() // is this a member of an AggregateDeclaration? | |
| 467 { | |
| 336 | 468 //printf("Dsymbol::isMember() %s\n", toChars()); |
| 159 | 469 Dsymbol *parent = toParent(); |
| 336 | 470 //printf("parent is %s %s\n", parent->kind(), parent->toChars()); |
| 159 | 471 return parent ? parent->isAggregateDeclaration() : NULL; |
| 472 } | |
| 473 | |
| 474 Type *Dsymbol::getType() | |
| 475 { | |
| 476 return NULL; | |
| 477 } | |
| 478 | |
| 479 int Dsymbol::needThis() | |
| 480 { | |
| 481 return FALSE; | |
| 482 } | |
| 483 | |
| 484 int Dsymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) | |
| 485 { | |
| 486 //printf("Dsymbol::addMember('%s')\n", toChars()); | |
| 487 //printf("Dsymbol::addMember(this = %p, '%s' scopesym = '%s')\n", this, toChars(), sd->toChars()); | |
| 488 //printf("Dsymbol::addMember(this = %p, '%s' sd = %p, sd->symtab = %p)\n", this, toChars(), sd, sd->symtab); | |
| 489 parent = sd; | |
| 490 if (!isAnonymous()) // no name, so can't add it to symbol table | |
| 491 { | |
| 1587 | 492 if (!sd->symtabInsert(this)) // if name is already defined |
| 159 | 493 { |
| 494 Dsymbol *s2; | |
| 495 | |
| 496 s2 = sd->symtab->lookup(ident); | |
| 497 if (!s2->overloadInsert(this)) | |
| 498 { | |
| 499 sd->multiplyDefined(0, this, s2); | |
| 500 } | |
| 501 } | |
| 502 if (sd->isAggregateDeclaration() || sd->isEnumDeclaration()) | |
| 503 { | |
| 504 if (ident == Id::__sizeof || ident == Id::alignof || ident == Id::mangleof) | |
| 505 error(".%s property cannot be redefined", ident->toChars()); | |
| 506 } | |
| 507 return 1; | |
| 508 } | |
| 509 return 0; | |
| 510 } | |
| 511 | |
| 512 void Dsymbol::error(const char *format, ...) | |
| 513 { | |
| 514 //printf("Dsymbol::error()\n"); | |
| 515 if (!global.gag) | |
| 516 { | |
| 517 char *p = locToChars(); | |
| 518 | |
| 519 if (*p) | |
| 520 fprintf(stdmsg, "%s: ", p); | |
| 521 mem.free(p); | |
| 522 | |
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523 fprintf(stdmsg, "Error: "); |
| 159 | 524 if (isAnonymous()) |
| 525 fprintf(stdmsg, "%s ", kind()); | |
| 526 else | |
| 527 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); | |
| 528 | |
| 529 va_list ap; | |
| 530 va_start(ap, format); | |
| 531 vfprintf(stdmsg, format, ap); | |
| 532 va_end(ap); | |
| 533 | |
| 534 fprintf(stdmsg, "\n"); | |
| 535 fflush(stdmsg); | |
| 536 } | |
| 537 global.errors++; | |
| 538 | |
| 539 //fatal(); | |
| 540 } | |
| 541 | |
| 542 void Dsymbol::error(Loc loc, const char *format, ...) | |
| 543 { | |
| 544 if (!global.gag) | |
| 545 { | |
| 546 char *p = loc.toChars(); | |
| 547 if (!*p) | |
| 548 p = locToChars(); | |
| 549 | |
| 550 if (*p) | |
| 551 fprintf(stdmsg, "%s: ", p); | |
| 552 mem.free(p); | |
| 553 | |
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554 fprintf(stdmsg, "Error: "); |
| 159 | 555 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); |
| 556 | |
| 557 va_list ap; | |
| 558 va_start(ap, format); | |
| 559 vfprintf(stdmsg, format, ap); | |
| 560 va_end(ap); | |
| 561 | |
| 562 fprintf(stdmsg, "\n"); | |
| 563 fflush(stdmsg); | |
| 564 } | |
| 565 | |
| 566 global.errors++; | |
| 567 | |
| 568 //fatal(); | |
| 569 } | |
| 570 | |
| 571 void Dsymbol::checkDeprecated(Loc loc, Scope *sc) | |
| 572 { | |
| 573 if (!global.params.useDeprecated && isDeprecated()) | |
| 574 { | |
| 575 // Don't complain if we're inside a deprecated symbol's scope | |
| 576 for (Dsymbol *sp = sc->parent; sp; sp = sp->parent) | |
| 577 { if (sp->isDeprecated()) | |
| 578 return; | |
| 579 } | |
| 580 | |
| 581 for (; sc; sc = sc->enclosing) | |
| 582 { | |
| 583 if (sc->scopesym && sc->scopesym->isDeprecated()) | |
| 584 return; | |
| 336 | 585 |
| 586 // If inside a StorageClassDeclaration that is deprecated | |
| 587 if (sc->stc & STCdeprecated) | |
| 588 return; | |
| 159 | 589 } |
| 590 | |
| 591 error(loc, "is deprecated"); | |
| 592 } | |
| 593 } | |
| 594 | |
| 595 /********************************** | |
| 596 * Determine which Module a Dsymbol is in. | |
| 597 */ | |
| 598 | |
| 599 Module *Dsymbol::getModule() | |
| 600 { | |
| 601 Module *m; | |
| 602 Dsymbol *s; | |
| 603 | |
| 604 //printf("Dsymbol::getModule()\n"); | |
| 605 s = this; | |
| 606 while (s) | |
| 607 { | |
| 608 //printf("\ts = '%s'\n", s->toChars()); | |
| 609 m = s->isModule(); | |
| 610 if (m) | |
| 611 return m; | |
| 612 s = s->parent; | |
| 613 } | |
| 614 return NULL; | |
| 615 } | |
| 616 | |
|
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617 |
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618 /********************************** |
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619 * Determine which Module a Dsymbol will be compiled in. |
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620 * This may be different from getModule for templates. |
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621 */ |
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622 |
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623 Module *Dsymbol::getCompilationModule() |
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624 { |
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625 Module *m; |
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626 TemplateInstance *ti; |
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627 Dsymbol *s; |
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628 |
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629 //printf("Dsymbol::getModule()\n"); |
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630 s = this; |
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631 while (s) |
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632 { |
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633 //printf("\ts = '%s'\n", s->toChars()); |
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634 m = s->isModule(); |
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635 if (m) |
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636 return m; |
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637 ti = s->isTemplateInstance(); |
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638 if (ti && ti->tmodule) |
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639 return ti->tmodule; |
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640 s = s->parent; |
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641 } |
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642 return NULL; |
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643 } |
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644 |
| 159 | 645 /************************************* |
| 646 */ | |
| 647 | |
| 648 enum PROT Dsymbol::prot() | |
| 649 { | |
| 650 return PROTpublic; | |
| 651 } | |
| 652 | |
| 653 /************************************* | |
| 654 * Do syntax copy of an array of Dsymbol's. | |
| 655 */ | |
| 656 | |
| 657 | |
| 658 Array *Dsymbol::arraySyntaxCopy(Array *a) | |
| 659 { | |
| 660 | |
| 661 Array *b = NULL; | |
| 662 if (a) | |
| 663 { | |
| 664 b = a->copy(); | |
| 665 for (int i = 0; i < b->dim; i++) | |
| 666 { | |
| 667 Dsymbol *s = (Dsymbol *)b->data[i]; | |
| 668 | |
| 669 s = s->syntaxCopy(NULL); | |
| 670 b->data[i] = (void *)s; | |
| 671 } | |
| 672 } | |
| 673 return b; | |
| 674 } | |
| 675 | |
| 676 | |
| 677 /**************************************** | |
| 678 * Add documentation comment to Dsymbol. | |
| 679 * Ignore NULL comments. | |
| 680 */ | |
| 681 | |
| 682 void Dsymbol::addComment(unsigned char *comment) | |
| 683 { | |
| 1587 | 684 //if (comment) |
| 685 //printf("adding comment '%s' to symbol %p '%s'\n", comment, this, toChars()); | |
| 159 | 686 |
| 687 if (!this->comment) | |
| 688 this->comment = comment; | |
| 689 #if 1 | |
| 690 else if (comment && strcmp((char *)comment, (char *)this->comment)) | |
| 691 { // Concatenate the two | |
| 692 this->comment = Lexer::combineComments(this->comment, comment); | |
| 693 } | |
| 694 #endif | |
| 695 } | |
| 696 | |
| 1587 | 697 /********************************* OverloadSet ****************************/ |
| 698 | |
| 699 #if DMDV2 | |
| 700 OverloadSet::OverloadSet() | |
| 701 : Dsymbol() | |
| 702 { | |
| 703 } | |
| 704 | |
| 705 void OverloadSet::push(Dsymbol *s) | |
| 706 { | |
| 707 a.push(s); | |
| 708 } | |
| 709 | |
| 710 const char *OverloadSet::kind() | |
| 711 { | |
| 712 return "overloadset"; | |
| 713 } | |
| 714 #endif | |
| 715 | |
| 159 | 716 |
| 717 /********************************* ScopeDsymbol ****************************/ | |
| 718 | |
| 719 ScopeDsymbol::ScopeDsymbol() | |
| 720 : Dsymbol() | |
| 721 { | |
| 722 members = NULL; | |
| 723 symtab = NULL; | |
| 724 imports = NULL; | |
| 725 prots = NULL; | |
| 726 } | |
| 727 | |
| 728 ScopeDsymbol::ScopeDsymbol(Identifier *id) | |
| 729 : Dsymbol(id) | |
| 730 { | |
| 731 members = NULL; | |
| 732 symtab = NULL; | |
| 733 imports = NULL; | |
| 734 prots = NULL; | |
| 735 } | |
| 736 | |
| 737 Dsymbol *ScopeDsymbol::syntaxCopy(Dsymbol *s) | |
| 738 { | |
| 739 //printf("ScopeDsymbol::syntaxCopy('%s')\n", toChars()); | |
| 740 | |
| 741 ScopeDsymbol *sd; | |
| 742 if (s) | |
| 743 sd = (ScopeDsymbol *)s; | |
| 744 else | |
| 745 sd = new ScopeDsymbol(ident); | |
| 746 sd->members = arraySyntaxCopy(members); | |
| 747 return sd; | |
| 748 } | |
| 749 | |
| 750 Dsymbol *ScopeDsymbol::search(Loc loc, Identifier *ident, int flags) | |
| 336 | 751 { |
| 752 //printf("%s->ScopeDsymbol::search(ident='%s', flags=x%x)\n", toChars(), ident->toChars(), flags); | |
| 1587 | 753 //if (strcmp(ident->toChars(),"c") == 0) *(char*)0=0; |
| 159 | 754 |
| 755 // Look in symbols declared in this module | |
| 336 | 756 Dsymbol *s = symtab ? symtab->lookup(ident) : NULL; |
|
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757 |
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758 // hide the aliases generated by selective or renamed private imports |
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759 if (s && flags & 1) |
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760 if (AliasDeclaration* ad = s->isAliasDeclaration()) |
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761 // may be a private alias to a function that is overloaded. these |
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762 // are sorted out during overload resolution, accept them here |
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763 if (ad->importprot == PROTprivate && !ad->aliassym->isFuncAliasDeclaration()) |
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764 s = NULL; |
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765 |
| 159 | 766 if (s) |
| 767 { | |
| 768 //printf("\ts = '%s.%s'\n",toChars(),s->toChars()); | |
| 769 } | |
| 770 else if (imports) | |
| 771 { | |
| 772 // Look in imported modules | |
| 336 | 773 for (int i = 0; i < imports->dim; i++) |
| 159 | 774 { ScopeDsymbol *ss = (ScopeDsymbol *)imports->data[i]; |
| 775 Dsymbol *s2; | |
| 776 | |
| 777 // If private import, don't search it | |
| 778 if (flags & 1 && prots[i] == PROTprivate) | |
| 779 continue; | |
| 780 | |
| 781 //printf("\tscanning import '%s', prots = %d, isModule = %p, isImport = %p\n", ss->toChars(), prots[i], ss->isModule(), ss->isImport()); | |
| 336 | 782 /* Don't find private members if ss is a module |
| 783 */ | |
| 159 | 784 s2 = ss->search(loc, ident, ss->isModule() ? 1 : 0); |
| 785 if (!s) | |
| 786 s = s2; | |
| 787 else if (s2 && s != s2) | |
| 788 { | |
| 789 if (s->toAlias() == s2->toAlias()) | |
| 790 { | |
| 336 | 791 /* After following aliases, we found the same symbol, |
| 792 * so it's not an ambiguity. | |
| 793 * But if one alias is deprecated, prefer the other. | |
| 794 */ | |
| 159 | 795 if (s->isDeprecated()) |
| 796 s = s2; | |
| 797 } | |
| 798 else | |
| 799 { | |
| 800 /* Two imports of the same module should be regarded as | |
| 801 * the same. | |
| 802 */ | |
| 803 Import *i1 = s->isImport(); | |
| 804 Import *i2 = s2->isImport(); | |
| 805 if (!(i1 && i2 && | |
| 806 (i1->mod == i2->mod || | |
| 807 (!i1->parent->isImport() && !i2->parent->isImport() && | |
| 808 i1->ident->equals(i2->ident)) | |
| 809 ) | |
| 810 ) | |
| 811 ) | |
| 812 { | |
| 813 ss->multiplyDefined(loc, s, s2); | |
| 814 break; | |
| 815 } | |
| 816 } | |
| 817 } | |
| 818 } | |
| 819 if (s) | |
| 820 { | |
| 821 Declaration *d = s->isDeclaration(); | |
| 822 if (d && d->protection == PROTprivate && !d->parent->isTemplateMixin()) | |
| 823 error("%s is private", d->toPrettyChars()); | |
| 824 } | |
| 825 } | |
| 826 return s; | |
| 827 } | |
| 828 | |
| 829 void ScopeDsymbol::importScope(ScopeDsymbol *s, enum PROT protection) | |
| 830 { | |
| 831 //printf("%s->ScopeDsymbol::importScope(%s, %d)\n", toChars(), s->toChars(), protection); | |
| 832 | |
| 833 // No circular or redundant import's | |
| 834 if (s != this) | |
| 835 { | |
| 836 if (!imports) | |
| 837 imports = new Array(); | |
| 838 else | |
| 839 { | |
| 840 for (int i = 0; i < imports->dim; i++) | |
| 841 { ScopeDsymbol *ss; | |
| 842 | |
| 843 ss = (ScopeDsymbol *) imports->data[i]; | |
| 1587 | 844 if (ss == s) // if already imported |
| 159 | 845 { |
| 846 if (protection > prots[i]) | |
| 847 prots[i] = protection; // upgrade access | |
| 848 return; | |
| 849 } | |
| 850 } | |
| 851 } | |
| 852 imports->push(s); | |
| 853 prots = (unsigned char *)mem.realloc(prots, imports->dim * sizeof(prots[0])); | |
| 854 prots[imports->dim - 1] = protection; | |
| 855 } | |
| 856 } | |
| 857 | |
| 858 int ScopeDsymbol::isforwardRef() | |
| 859 { | |
| 860 return (members == NULL); | |
| 861 } | |
| 862 | |
| 863 void ScopeDsymbol::defineRef(Dsymbol *s) | |
| 864 { | |
| 865 ScopeDsymbol *ss; | |
| 866 | |
| 867 ss = s->isScopeDsymbol(); | |
| 868 members = ss->members; | |
| 869 ss->members = NULL; | |
| 870 } | |
| 871 | |
| 872 void ScopeDsymbol::multiplyDefined(Loc loc, Dsymbol *s1, Dsymbol *s2) | |
| 873 { | |
| 874 #if 0 | |
| 875 printf("ScopeDsymbol::multiplyDefined()\n"); | |
| 876 printf("s1 = %p, '%s' kind = '%s', parent = %s\n", s1, s1->toChars(), s1->kind(), s1->parent ? s1->parent->toChars() : ""); | |
| 877 printf("s2 = %p, '%s' kind = '%s', parent = %s\n", s2, s2->toChars(), s2->kind(), s2->parent ? s2->parent->toChars() : ""); | |
| 878 #endif | |
| 879 if (loc.filename) | |
| 880 { ::error(loc, "%s at %s conflicts with %s at %s", | |
| 881 s1->toPrettyChars(), | |
| 882 s1->locToChars(), | |
| 883 s2->toPrettyChars(), | |
| 884 s2->locToChars()); | |
| 885 } | |
| 886 else | |
| 887 { | |
| 888 s1->error(loc, "conflicts with %s %s at %s", | |
| 889 s2->kind(), | |
| 890 s2->toPrettyChars(), | |
| 891 s2->locToChars()); | |
| 892 } | |
| 893 } | |
| 894 | |
| 895 Dsymbol *ScopeDsymbol::nameCollision(Dsymbol *s) | |
| 896 { | |
| 897 Dsymbol *sprev; | |
| 898 | |
| 899 // Look to see if we are defining a forward referenced symbol | |
| 900 | |
| 901 sprev = symtab->lookup(s->ident); | |
| 902 assert(sprev); | |
| 903 if (s->equals(sprev)) // if the same symbol | |
| 904 { | |
| 905 if (s->isforwardRef()) // if second declaration is a forward reference | |
| 906 return sprev; | |
| 907 if (sprev->isforwardRef()) | |
| 908 { | |
| 909 sprev->defineRef(s); // copy data from s into sprev | |
| 910 return sprev; | |
| 911 } | |
| 912 } | |
| 913 multiplyDefined(0, s, sprev); | |
| 914 return sprev; | |
| 915 } | |
| 916 | |
| 336 | 917 const char *ScopeDsymbol::kind() |
| 159 | 918 { |
| 919 return "ScopeDsymbol"; | |
| 920 } | |
| 921 | |
| 1587 | 922 Dsymbol *ScopeDsymbol::symtabInsert(Dsymbol *s) |
| 923 { | |
| 924 return symtab->insert(s); | |
| 925 } | |
| 926 | |
| 927 /*************************************** | |
| 928 * Determine number of Dsymbols, folding in AttribDeclaration members. | |
| 929 */ | |
| 930 | |
| 931 #if DMDV2 | |
| 932 size_t ScopeDsymbol::dim(Array *members) | |
| 933 { | |
| 934 size_t n = 0; | |
| 935 if (members) | |
| 936 { | |
| 937 for (size_t i = 0; i < members->dim; i++) | |
| 938 { Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 939 AttribDeclaration *a = s->isAttribDeclaration(); | |
| 940 | |
| 941 if (a) | |
| 942 { | |
| 943 n += dim(a->decl); | |
| 944 } | |
| 945 else | |
| 946 n++; | |
| 947 } | |
| 948 } | |
| 949 return n; | |
| 950 } | |
| 951 #endif | |
| 952 | |
| 953 /*************************************** | |
| 954 * Get nth Dsymbol, folding in AttribDeclaration members. | |
| 955 * Returns: | |
| 956 * Dsymbol* nth Dsymbol | |
| 957 * NULL not found, *pn gets incremented by the number | |
| 958 * of Dsymbols | |
| 959 */ | |
| 960 | |
| 961 #if DMDV2 | |
| 962 Dsymbol *ScopeDsymbol::getNth(Array *members, size_t nth, size_t *pn) | |
| 963 { | |
| 964 if (!members) | |
| 965 return NULL; | |
| 966 | |
| 967 size_t n = 0; | |
| 968 for (size_t i = 0; i < members->dim; i++) | |
| 969 { Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 970 AttribDeclaration *a = s->isAttribDeclaration(); | |
| 971 | |
| 972 if (a) | |
| 973 { | |
| 974 s = getNth(a->decl, nth - n, &n); | |
| 975 if (s) | |
| 976 return s; | |
| 977 } | |
| 978 else if (n == nth) | |
| 979 return s; | |
| 980 else | |
| 981 n++; | |
| 982 } | |
| 983 | |
| 984 if (pn) | |
| 985 *pn += n; | |
| 986 return NULL; | |
| 987 } | |
| 988 #endif | |
| 159 | 989 |
| 990 /******************************************* | |
| 991 * Look for member of the form: | |
| 992 * const(MemberInfo)[] getMembers(string); | |
| 993 * Returns NULL if not found | |
| 994 */ | |
| 995 | |
| 336 | 996 #if DMDV2 |
| 159 | 997 FuncDeclaration *ScopeDsymbol::findGetMembers() |
| 998 { | |
| 999 Dsymbol *s = search_function(this, Id::getmembers); | |
| 1000 FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL; | |
| 1001 | |
| 1002 #if 0 // Finish | |
| 1003 static TypeFunction *tfgetmembers; | |
| 1004 | |
| 1005 if (!tfgetmembers) | |
| 1006 { | |
| 1007 Scope sc; | |
| 1008 Arguments *arguments = new Arguments; | |
| 1009 Arguments *arg = new Argument(STCin, Type::tchar->constOf()->arrayOf(), NULL, NULL); | |
| 1010 arguments->push(arg); | |
| 1011 | |
| 1012 Type *tret = NULL; | |
| 1013 tfgetmembers = new TypeFunction(arguments, tret, 0, LINKd); | |
| 1014 tfgetmembers = (TypeFunction *)tfgetmembers->semantic(0, &sc); | |
| 1015 } | |
| 1016 if (fdx) | |
| 1017 fdx = fdx->overloadExactMatch(tfgetmembers); | |
| 1018 #endif | |
| 1019 if (fdx && fdx->isVirtual()) | |
| 1020 fdx = NULL; | |
| 1021 | |
| 1022 return fdx; | |
| 1023 } | |
| 1024 #endif | |
| 1025 | |
| 1026 | |
| 1027 /****************************** WithScopeSymbol ******************************/ | |
| 1028 | |
| 1029 WithScopeSymbol::WithScopeSymbol(WithStatement *withstate) | |
| 1030 : ScopeDsymbol() | |
| 1031 { | |
| 1032 this->withstate = withstate; | |
| 1033 } | |
| 1034 | |
| 1035 Dsymbol *WithScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 1036 { | |
| 1037 // Acts as proxy to the with class declaration | |
| 1038 return withstate->exp->type->toDsymbol(NULL)->search(loc, ident, 0); | |
| 1039 } | |
| 1040 | |
| 1041 /****************************** ArrayScopeSymbol ******************************/ | |
| 1042 | |
| 1043 ArrayScopeSymbol::ArrayScopeSymbol(Expression *e) | |
| 1044 : ScopeDsymbol() | |
| 1045 { | |
| 1046 assert(e->op == TOKindex || e->op == TOKslice); | |
| 1047 exp = e; | |
| 1048 type = NULL; | |
| 1049 td = NULL; | |
| 1050 } | |
| 1051 | |
| 1052 ArrayScopeSymbol::ArrayScopeSymbol(TypeTuple *t) | |
| 1053 : ScopeDsymbol() | |
| 1054 { | |
| 1055 exp = NULL; | |
| 1056 type = t; | |
| 1057 td = NULL; | |
| 1058 } | |
| 1059 | |
| 1060 ArrayScopeSymbol::ArrayScopeSymbol(TupleDeclaration *s) | |
| 1061 : ScopeDsymbol() | |
| 1062 { | |
| 1063 exp = NULL; | |
| 1064 type = NULL; | |
| 1065 td = s; | |
| 1066 } | |
| 1067 | |
| 1068 Dsymbol *ArrayScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 1069 { | |
| 1070 //printf("ArrayScopeSymbol::search('%s', flags = %d)\n", ident->toChars(), flags); | |
| 1071 if (ident == Id::length || ident == Id::dollar) | |
| 1072 { VarDeclaration **pvar; | |
| 1073 Expression *ce; | |
| 1074 | |
| 1075 L1: | |
| 1076 | |
| 1077 if (td) | |
| 1587 | 1078 { /* $ gives the number of elements in the tuple |
| 1079 */ | |
| 159 | 1080 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1081 Expression *e = new IntegerExp(0, td->objects->dim, Type::tsize_t); | |
| 1082 v->init = new ExpInitializer(0, e); | |
| 1083 v->storage_class |= STCconst; | |
| 1084 return v; | |
| 1085 } | |
| 1086 | |
| 1087 if (type) | |
| 1587 | 1088 { /* $ gives the number of type entries in the type tuple |
| 1089 */ | |
| 159 | 1090 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1091 Expression *e = new IntegerExp(0, type->arguments->dim, Type::tsize_t); | |
| 1092 v->init = new ExpInitializer(0, e); | |
| 1093 v->storage_class |= STCconst; | |
| 1094 return v; | |
| 1095 } | |
| 1096 | |
| 1097 if (exp->op == TOKindex) | |
| 1587 | 1098 { /* array[index] where index is some function of $ |
| 1099 */ | |
| 159 | 1100 IndexExp *ie = (IndexExp *)exp; |
| 1101 | |
| 1102 pvar = &ie->lengthVar; | |
| 1103 ce = ie->e1; | |
| 1104 } | |
| 1105 else if (exp->op == TOKslice) | |
| 1587 | 1106 { /* array[lwr .. upr] where lwr or upr is some function of $ |
| 1107 */ | |
| 159 | 1108 SliceExp *se = (SliceExp *)exp; |
| 1109 | |
| 1110 pvar = &se->lengthVar; | |
| 1111 ce = se->e1; | |
| 1112 } | |
| 1113 else | |
| 1587 | 1114 /* Didn't find $, look in enclosing scope(s). |
| 1115 */ | |
| 159 | 1116 return NULL; |
| 1117 | |
| 1587 | 1118 /* If we are indexing into an array that is really a type |
| 1119 * tuple, rewrite this as an index into a type tuple and | |
| 1120 * try again. | |
| 1121 */ | |
| 159 | 1122 if (ce->op == TOKtype) |
| 1123 { | |
| 1124 Type *t = ((TypeExp *)ce)->type; | |
| 1125 if (t->ty == Ttuple) | |
| 1126 { type = (TypeTuple *)t; | |
| 1127 goto L1; | |
| 1128 } | |
| 1129 } | |
| 1130 | |
| 1587 | 1131 /* *pvar is lazily initialized, so if we refer to $ |
| 1132 * multiple times, it gets set only once. | |
| 1133 */ | |
| 1134 if (!*pvar) // if not already initialized | |
| 1135 { /* Create variable v and set it to the value of $, | |
| 1136 * which will be a constant. | |
| 1137 */ | |
| 159 | 1138 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1139 | |
| 1140 if (ce->op == TOKstring) | |
| 1141 { /* It is for a string literal, so the | |
| 1142 * length will be a const. | |
| 1143 */ | |
| 1144 Expression *e = new IntegerExp(0, ((StringExp *)ce)->len, Type::tsize_t); | |
| 1145 v->init = new ExpInitializer(0, e); | |
| 1146 v->storage_class |= STCconst; | |
| 1147 } | |
| 1148 else if (ce->op == TOKarrayliteral) | |
| 1149 { /* It is for an array literal, so the | |
| 1150 * length will be a const. | |
| 1151 */ | |
| 1152 Expression *e = new IntegerExp(0, ((ArrayLiteralExp *)ce)->elements->dim, Type::tsize_t); | |
| 1153 v->init = new ExpInitializer(0, e); | |
| 1154 v->storage_class |= STCconst; | |
| 1155 } | |
| 1156 else if (ce->op == TOKtuple) | |
| 1157 { /* It is for an expression tuple, so the | |
| 1158 * length will be a const. | |
| 1159 */ | |
| 1160 Expression *e = new IntegerExp(0, ((TupleExp *)ce)->exps->dim, Type::tsize_t); | |
| 1161 v->init = new ExpInitializer(0, e); | |
| 1162 v->storage_class |= STCconst; | |
| 1163 } | |
| 1164 *pvar = v; | |
| 1165 } | |
| 1166 return (*pvar); | |
| 1167 } | |
| 1168 return NULL; | |
| 1169 } | |
| 1170 | |
| 1171 | |
| 1172 /****************************** DsymbolTable ******************************/ | |
| 1173 | |
| 1174 DsymbolTable::DsymbolTable() | |
| 1175 { | |
| 1176 tab = new StringTable; | |
| 1177 } | |
| 1178 | |
| 1179 DsymbolTable::~DsymbolTable() | |
| 1180 { | |
| 1181 delete tab; | |
| 1182 } | |
| 1183 | |
| 1184 Dsymbol *DsymbolTable::lookup(Identifier *ident) | |
| 1587 | 1185 { |
| 159 | 1186 #ifdef DEBUG |
| 1187 assert(ident); | |
| 1188 assert(tab); | |
| 1189 #endif | |
| 1587 | 1190 StringValue *sv = tab->lookup((char*)ident->string, ident->len); |
| 159 | 1191 return (Dsymbol *)(sv ? sv->ptrvalue : NULL); |
| 1192 } | |
| 1193 | |
| 1194 Dsymbol *DsymbolTable::insert(Dsymbol *s) | |
| 1195 { StringValue *sv; | |
| 1196 Identifier *ident; | |
| 1197 | |
| 1198 //printf("DsymbolTable::insert(this = %p, '%s')\n", this, s->ident->toChars()); | |
| 1199 ident = s->ident; | |
| 1200 #ifdef DEBUG | |
| 1201 assert(ident); | |
| 1202 assert(tab); | |
| 1203 #endif | |
| 1204 sv = tab->insert(ident->toChars(), ident->len); | |
| 1205 if (!sv) | |
| 1206 return NULL; // already in table | |
| 1207 sv->ptrvalue = s; | |
| 1208 return s; | |
| 1209 } | |
| 1210 | |
| 1211 Dsymbol *DsymbolTable::insert(Identifier *ident, Dsymbol *s) | |
| 1212 { StringValue *sv; | |
| 1213 | |
| 1214 //printf("DsymbolTable::insert()\n"); | |
| 1215 sv = tab->insert(ident->toChars(), ident->len); | |
| 1216 if (!sv) | |
| 1217 return NULL; // already in table | |
| 1218 sv->ptrvalue = s; | |
| 1219 return s; | |
| 1220 } | |
| 1221 | |
| 1222 Dsymbol *DsymbolTable::update(Dsymbol *s) | |
| 1223 { StringValue *sv; | |
| 1224 Identifier *ident; | |
| 1225 | |
| 1226 ident = s->ident; | |
| 1227 sv = tab->update(ident->toChars(), ident->len); | |
| 1228 sv->ptrvalue = s; | |
| 1229 return s; | |
| 1230 } | |
| 1231 | |
| 1232 | |
| 1233 | |
| 1234 |