Mercurial > projects > ldc
annotate dmd/dsymbol.c @ 1147:dbe4af57b240
Changed use of toObjFile to a new codegen method.
More versioning of DMD specific codegen code.
| author | Tomas Lindquist Olsen <tomas.l.olsen gmail.com> |
|---|---|
| date | Fri, 27 Mar 2009 17:54:27 +0100 |
| parents | 1860414bf3b7 |
| children | 78038e540342 |
| 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 | |
|
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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" | |
| 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; | |
|
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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; | |
| 48 | |
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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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parents:
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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; | |
| 67 | |
|
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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 | |
| 167 char *Dsymbol::toPrettyChars() | |
| 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--; | |
| 193 *q = '.'; | |
| 194 } | |
| 195 return s; | |
| 196 } | |
| 197 | |
| 198 char *Dsymbol::locToChars() | |
| 199 { | |
| 200 OutBuffer buf; | |
| 201 char *p; | |
| 202 | |
| 203 Module *m = getModule(); | |
| 204 | |
| 205 if (m && m->srcfile) | |
| 206 loc.filename = m->srcfile->toChars(); | |
| 207 return loc.toChars(); | |
| 208 } | |
| 209 | |
| 336 | 210 const char *Dsymbol::kind() |
| 159 | 211 { |
| 212 return "symbol"; | |
| 213 } | |
| 214 | |
| 215 /********************************* | |
| 216 * If this symbol is really an alias for another, | |
| 217 * return that other. | |
| 218 */ | |
| 219 | |
| 220 Dsymbol *Dsymbol::toAlias() | |
| 221 { | |
| 222 return this; | |
| 223 } | |
| 224 | |
| 225 Dsymbol *Dsymbol::toParent() | |
| 226 { | |
| 227 return parent ? parent->pastMixin() : NULL; | |
| 228 } | |
| 229 | |
| 230 Dsymbol *Dsymbol::pastMixin() | |
| 231 { | |
| 232 Dsymbol *s = this; | |
| 233 | |
| 234 //printf("Dsymbol::pastMixin() %s\n", toChars()); | |
| 235 while (s && s->isTemplateMixin()) | |
| 236 s = s->parent; | |
| 237 return s; | |
| 238 } | |
| 239 | |
| 240 /********************************** | |
| 241 * Use this instead of toParent() when looking for the | |
| 242 * 'this' pointer of the enclosing function/class. | |
| 243 */ | |
| 244 | |
| 245 Dsymbol *Dsymbol::toParent2() | |
| 246 { | |
| 247 Dsymbol *s = parent; | |
| 248 while (s && s->isTemplateInstance()) | |
| 249 s = s->parent; | |
| 250 return s; | |
| 251 } | |
| 252 | |
| 336 | 253 TemplateInstance *Dsymbol::inTemplateInstance() |
| 254 { | |
| 255 for (Dsymbol *parent = this->parent; parent; parent = parent->parent) | |
| 256 { | |
| 257 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 258 if (ti) | |
| 259 return ti; | |
| 260 } | |
| 261 return NULL; | |
| 262 } | |
| 159 | 263 |
| 264 int Dsymbol::isAnonymous() | |
| 265 { | |
| 266 return ident ? 0 : 1; | |
| 267 } | |
| 268 | |
| 269 void Dsymbol::semantic(Scope *sc) | |
| 270 { | |
| 271 error("%p has no semantic routine", this); | |
| 272 } | |
| 273 | |
| 274 void Dsymbol::semantic2(Scope *sc) | |
| 275 { | |
| 276 // Most Dsymbols have no further semantic analysis needed | |
| 277 } | |
| 278 | |
| 279 void Dsymbol::semantic3(Scope *sc) | |
| 280 { | |
| 281 // Most Dsymbols have no further semantic analysis needed | |
| 282 } | |
| 283 | |
| 284 void Dsymbol::inlineScan() | |
| 285 { | |
| 286 // Most Dsymbols have no further semantic analysis needed | |
| 287 } | |
| 288 | |
| 336 | 289 /********************************************* |
| 290 * Search for ident as member of s. | |
| 291 * Input: | |
| 292 * flags: 1 don't find private members | |
| 293 * 2 don't give error messages | |
| 294 * 4 return NULL if ambiguous | |
| 295 * Returns: | |
| 296 * NULL if not found | |
| 297 */ | |
| 298 | |
| 159 | 299 Dsymbol *Dsymbol::search(Loc loc, Identifier *ident, int flags) |
| 300 { | |
| 301 //printf("Dsymbol::search(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 302 return NULL; | |
| 303 } | |
| 304 | |
| 305 /*************************************** | |
| 306 * Search for identifier id as a member of 'this'. | |
| 307 * id may be a template instance. | |
| 308 * Returns: | |
| 309 * symbol found, NULL if not | |
| 310 */ | |
| 311 | |
| 312 Dsymbol *Dsymbol::searchX(Loc loc, Scope *sc, Identifier *id) | |
| 313 { | |
| 314 //printf("Dsymbol::searchX(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 315 Dsymbol *s = toAlias(); | |
| 316 Dsymbol *sm; | |
| 317 | |
| 318 switch (id->dyncast()) | |
| 319 { | |
| 320 case DYNCAST_IDENTIFIER: | |
| 321 sm = s->search(loc, id, 0); | |
| 322 break; | |
| 323 | |
| 324 case DYNCAST_DSYMBOL: | |
| 325 { // It's a template instance | |
| 326 //printf("\ttemplate instance id\n"); | |
| 327 Dsymbol *st = (Dsymbol *)id; | |
| 328 TemplateInstance *ti = st->isTemplateInstance(); | |
| 329 id = ti->name; | |
| 330 sm = s->search(loc, id, 0); | |
| 331 if (!sm) | |
| 332 { error("template identifier %s is not a member of %s %s", | |
| 333 id->toChars(), s->kind(), s->toChars()); | |
| 334 return NULL; | |
| 335 } | |
| 336 sm = sm->toAlias(); | |
| 337 TemplateDeclaration *td = sm->isTemplateDeclaration(); | |
| 338 if (!td) | |
| 339 { | |
| 340 error("%s is not a template, it is a %s", id->toChars(), sm->kind()); | |
| 341 return NULL; | |
| 342 } | |
| 343 ti->tempdecl = td; | |
| 344 if (!ti->semanticdone) | |
| 345 ti->semantic(sc); | |
| 346 sm = ti->toAlias(); | |
| 347 break; | |
| 348 } | |
| 349 | |
| 350 default: | |
| 351 assert(0); | |
| 352 } | |
| 353 return sm; | |
| 354 } | |
| 355 | |
| 356 int Dsymbol::overloadInsert(Dsymbol *s) | |
| 357 { | |
| 358 //printf("Dsymbol::overloadInsert('%s')\n", s->toChars()); | |
| 359 return FALSE; | |
| 360 } | |
| 361 | |
| 362 void Dsymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 363 { | |
| 364 buf->writestring(toChars()); | |
| 365 } | |
| 366 | |
| 367 unsigned Dsymbol::size(Loc loc) | |
| 368 { | |
| 369 error("Dsymbol '%s' has no size\n", toChars()); | |
| 370 return 0; | |
| 371 } | |
| 372 | |
| 373 int Dsymbol::isforwardRef() | |
| 374 { | |
| 375 return FALSE; | |
| 376 } | |
| 377 | |
| 378 AggregateDeclaration *Dsymbol::isThis() | |
| 379 { | |
| 380 return NULL; | |
| 381 } | |
| 382 | |
| 383 ClassDeclaration *Dsymbol::isClassMember() // are we a member of a class? | |
| 384 { | |
| 385 Dsymbol *parent = toParent(); | |
| 386 if (parent && parent->isClassDeclaration()) | |
| 387 return (ClassDeclaration *)parent; | |
| 388 return NULL; | |
| 389 } | |
| 390 | |
| 391 void Dsymbol::defineRef(Dsymbol *s) | |
| 392 { | |
| 393 assert(0); | |
| 394 } | |
| 395 | |
| 396 int Dsymbol::isExport() | |
| 397 { | |
| 398 return FALSE; | |
| 399 } | |
| 400 | |
| 401 int Dsymbol::isImportedSymbol() | |
| 402 { | |
| 403 return FALSE; | |
| 404 } | |
| 405 | |
| 406 int Dsymbol::isDeprecated() | |
| 407 { | |
| 408 return FALSE; | |
| 409 } | |
| 410 | |
| 411 LabelDsymbol *Dsymbol::isLabel() // is this a LabelDsymbol()? | |
| 412 { | |
| 413 return NULL; | |
| 414 } | |
| 415 | |
| 416 AggregateDeclaration *Dsymbol::isMember() // is this a member of an AggregateDeclaration? | |
| 417 { | |
| 336 | 418 //printf("Dsymbol::isMember() %s\n", toChars()); |
| 159 | 419 Dsymbol *parent = toParent(); |
| 336 | 420 //printf("parent is %s %s\n", parent->kind(), parent->toChars()); |
| 159 | 421 return parent ? parent->isAggregateDeclaration() : NULL; |
| 422 } | |
| 423 | |
| 424 Type *Dsymbol::getType() | |
| 425 { | |
| 426 return NULL; | |
| 427 } | |
| 428 | |
| 429 int Dsymbol::needThis() | |
| 430 { | |
| 431 return FALSE; | |
| 432 } | |
| 433 | |
| 434 int Dsymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) | |
| 435 { | |
| 436 //printf("Dsymbol::addMember('%s')\n", toChars()); | |
| 437 //printf("Dsymbol::addMember(this = %p, '%s' scopesym = '%s')\n", this, toChars(), sd->toChars()); | |
| 438 //printf("Dsymbol::addMember(this = %p, '%s' sd = %p, sd->symtab = %p)\n", this, toChars(), sd, sd->symtab); | |
| 439 parent = sd; | |
| 440 if (!isAnonymous()) // no name, so can't add it to symbol table | |
| 441 { | |
| 442 if (!sd->symtab->insert(this)) // if name is already defined | |
| 443 { | |
| 444 Dsymbol *s2; | |
| 445 | |
| 446 s2 = sd->symtab->lookup(ident); | |
| 447 if (!s2->overloadInsert(this)) | |
| 448 { | |
| 449 sd->multiplyDefined(0, this, s2); | |
| 450 } | |
| 451 } | |
| 452 if (sd->isAggregateDeclaration() || sd->isEnumDeclaration()) | |
| 453 { | |
| 454 if (ident == Id::__sizeof || ident == Id::alignof || ident == Id::mangleof) | |
| 455 error(".%s property cannot be redefined", ident->toChars()); | |
| 456 } | |
| 457 return 1; | |
| 458 } | |
| 459 return 0; | |
| 460 } | |
| 461 | |
| 462 void Dsymbol::error(const char *format, ...) | |
| 463 { | |
| 464 //printf("Dsymbol::error()\n"); | |
| 465 if (!global.gag) | |
| 466 { | |
| 467 char *p = locToChars(); | |
| 468 | |
| 469 if (*p) | |
| 470 fprintf(stdmsg, "%s: ", p); | |
| 471 mem.free(p); | |
| 472 | |
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473 fprintf(stdmsg, "Error: "); |
| 159 | 474 if (isAnonymous()) |
| 475 fprintf(stdmsg, "%s ", kind()); | |
| 476 else | |
| 477 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); | |
| 478 | |
| 479 va_list ap; | |
| 480 va_start(ap, format); | |
| 481 vfprintf(stdmsg, format, ap); | |
| 482 va_end(ap); | |
| 483 | |
| 484 fprintf(stdmsg, "\n"); | |
| 485 fflush(stdmsg); | |
| 486 } | |
| 487 global.errors++; | |
| 488 | |
| 489 //fatal(); | |
| 490 } | |
| 491 | |
| 492 void Dsymbol::error(Loc loc, const char *format, ...) | |
| 493 { | |
| 494 if (!global.gag) | |
| 495 { | |
| 496 char *p = loc.toChars(); | |
| 497 if (!*p) | |
| 498 p = locToChars(); | |
| 499 | |
| 500 if (*p) | |
| 501 fprintf(stdmsg, "%s: ", p); | |
| 502 mem.free(p); | |
| 503 | |
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504 fprintf(stdmsg, "Error: "); |
| 159 | 505 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); |
| 506 | |
| 507 va_list ap; | |
| 508 va_start(ap, format); | |
| 509 vfprintf(stdmsg, format, ap); | |
| 510 va_end(ap); | |
| 511 | |
| 512 fprintf(stdmsg, "\n"); | |
| 513 fflush(stdmsg); | |
| 514 } | |
| 515 | |
| 516 global.errors++; | |
| 517 | |
| 518 //fatal(); | |
| 519 } | |
| 520 | |
| 521 void Dsymbol::checkDeprecated(Loc loc, Scope *sc) | |
| 522 { | |
| 523 if (!global.params.useDeprecated && isDeprecated()) | |
| 524 { | |
| 525 // Don't complain if we're inside a deprecated symbol's scope | |
| 526 for (Dsymbol *sp = sc->parent; sp; sp = sp->parent) | |
| 527 { if (sp->isDeprecated()) | |
| 528 return; | |
| 529 } | |
| 530 | |
| 531 for (; sc; sc = sc->enclosing) | |
| 532 { | |
| 533 if (sc->scopesym && sc->scopesym->isDeprecated()) | |
| 534 return; | |
| 336 | 535 |
| 536 // If inside a StorageClassDeclaration that is deprecated | |
| 537 if (sc->stc & STCdeprecated) | |
| 538 return; | |
| 159 | 539 } |
| 540 | |
| 541 error(loc, "is deprecated"); | |
| 542 } | |
| 543 } | |
| 544 | |
| 545 /********************************** | |
| 546 * Determine which Module a Dsymbol is in. | |
| 547 */ | |
| 548 | |
| 549 Module *Dsymbol::getModule() | |
| 550 { | |
| 551 Module *m; | |
| 552 Dsymbol *s; | |
| 553 | |
| 554 //printf("Dsymbol::getModule()\n"); | |
| 555 s = this; | |
| 556 while (s) | |
| 557 { | |
| 558 //printf("\ts = '%s'\n", s->toChars()); | |
| 559 m = s->isModule(); | |
| 560 if (m) | |
| 561 return m; | |
| 562 s = s->parent; | |
| 563 } | |
| 564 return NULL; | |
| 565 } | |
| 566 | |
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568 /********************************** |
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569 * Determine which Module a Dsymbol will be compiled in. |
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570 * This may be different from getModule for templates. |
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571 */ |
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572 |
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573 Module *Dsymbol::getCompilationModule() |
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574 { |
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575 Module *m; |
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576 TemplateInstance *ti; |
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577 Dsymbol *s; |
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578 |
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579 //printf("Dsymbol::getModule()\n"); |
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580 s = this; |
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581 while (s) |
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582 { |
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583 //printf("\ts = '%s'\n", s->toChars()); |
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584 m = s->isModule(); |
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585 if (m) |
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586 return m; |
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587 ti = s->isTemplateInstance(); |
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588 if (ti && ti->tmodule) |
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589 return ti->tmodule; |
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590 s = s->parent; |
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591 } |
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592 return NULL; |
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593 } |
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594 |
| 159 | 595 /************************************* |
| 596 */ | |
| 597 | |
| 598 enum PROT Dsymbol::prot() | |
| 599 { | |
| 600 return PROTpublic; | |
| 601 } | |
| 602 | |
| 603 /************************************* | |
| 604 * Do syntax copy of an array of Dsymbol's. | |
| 605 */ | |
| 606 | |
| 607 | |
| 608 Array *Dsymbol::arraySyntaxCopy(Array *a) | |
| 609 { | |
| 610 | |
| 611 Array *b = NULL; | |
| 612 if (a) | |
| 613 { | |
| 614 b = a->copy(); | |
| 615 for (int i = 0; i < b->dim; i++) | |
| 616 { | |
| 617 Dsymbol *s = (Dsymbol *)b->data[i]; | |
| 618 | |
| 619 s = s->syntaxCopy(NULL); | |
| 620 b->data[i] = (void *)s; | |
| 621 } | |
| 622 } | |
| 623 return b; | |
| 624 } | |
| 625 | |
| 626 | |
| 627 /**************************************** | |
| 628 * Add documentation comment to Dsymbol. | |
| 629 * Ignore NULL comments. | |
| 630 */ | |
| 631 | |
| 632 void Dsymbol::addComment(unsigned char *comment) | |
| 633 { | |
| 634 // if (comment) | |
| 635 // printf("adding comment '%s' to symbol %p '%s'\n", comment, this, toChars()); | |
| 636 | |
| 637 if (!this->comment) | |
| 638 this->comment = comment; | |
| 639 #if 1 | |
| 640 else if (comment && strcmp((char *)comment, (char *)this->comment)) | |
| 641 { // Concatenate the two | |
| 642 this->comment = Lexer::combineComments(this->comment, comment); | |
| 643 } | |
| 644 #endif | |
| 645 } | |
| 646 | |
| 647 | |
| 648 /********************************* ScopeDsymbol ****************************/ | |
| 649 | |
| 650 ScopeDsymbol::ScopeDsymbol() | |
| 651 : Dsymbol() | |
| 652 { | |
| 653 members = NULL; | |
| 654 symtab = NULL; | |
| 655 imports = NULL; | |
| 656 prots = NULL; | |
| 657 } | |
| 658 | |
| 659 ScopeDsymbol::ScopeDsymbol(Identifier *id) | |
| 660 : Dsymbol(id) | |
| 661 { | |
| 662 members = NULL; | |
| 663 symtab = NULL; | |
| 664 imports = NULL; | |
| 665 prots = NULL; | |
| 666 } | |
| 667 | |
| 668 Dsymbol *ScopeDsymbol::syntaxCopy(Dsymbol *s) | |
| 669 { | |
| 670 //printf("ScopeDsymbol::syntaxCopy('%s')\n", toChars()); | |
| 671 | |
| 672 ScopeDsymbol *sd; | |
| 673 if (s) | |
| 674 sd = (ScopeDsymbol *)s; | |
| 675 else | |
| 676 sd = new ScopeDsymbol(ident); | |
| 677 sd->members = arraySyntaxCopy(members); | |
| 678 return sd; | |
| 679 } | |
| 680 | |
| 681 Dsymbol *ScopeDsymbol::search(Loc loc, Identifier *ident, int flags) | |
| 336 | 682 { |
| 683 //printf("%s->ScopeDsymbol::search(ident='%s', flags=x%x)\n", toChars(), ident->toChars(), flags); | |
| 159 | 684 |
| 685 // Look in symbols declared in this module | |
| 336 | 686 Dsymbol *s = symtab ? symtab->lookup(ident) : NULL; |
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687 |
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688 // hide private nonlocal symbols |
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689 if (flags & 1 && s && s->prot() == PROTprivate) |
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690 s = NULL; |
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691 |
| 159 | 692 if (s) |
| 693 { | |
| 694 //printf("\ts = '%s.%s'\n",toChars(),s->toChars()); | |
| 695 } | |
| 696 else if (imports) | |
| 697 { | |
| 698 // Look in imported modules | |
| 336 | 699 for (int i = 0; i < imports->dim; i++) |
| 159 | 700 { ScopeDsymbol *ss = (ScopeDsymbol *)imports->data[i]; |
| 701 Dsymbol *s2; | |
| 702 | |
| 703 // If private import, don't search it | |
| 704 if (flags & 1 && prots[i] == PROTprivate) | |
| 705 continue; | |
| 706 | |
| 707 //printf("\tscanning import '%s', prots = %d, isModule = %p, isImport = %p\n", ss->toChars(), prots[i], ss->isModule(), ss->isImport()); | |
| 336 | 708 /* Don't find private members if ss is a module |
| 709 */ | |
| 159 | 710 s2 = ss->search(loc, ident, ss->isModule() ? 1 : 0); |
| 711 if (!s) | |
| 712 s = s2; | |
| 713 else if (s2 && s != s2) | |
| 714 { | |
| 715 if (s->toAlias() == s2->toAlias()) | |
| 716 { | |
| 336 | 717 /* After following aliases, we found the same symbol, |
| 718 * so it's not an ambiguity. | |
| 719 * But if one alias is deprecated, prefer the other. | |
| 720 */ | |
| 159 | 721 if (s->isDeprecated()) |
| 722 s = s2; | |
| 723 } | |
| 724 else | |
| 725 { | |
| 726 /* Two imports of the same module should be regarded as | |
| 727 * the same. | |
| 728 */ | |
| 729 Import *i1 = s->isImport(); | |
| 730 Import *i2 = s2->isImport(); | |
| 731 if (!(i1 && i2 && | |
| 732 (i1->mod == i2->mod || | |
| 733 (!i1->parent->isImport() && !i2->parent->isImport() && | |
| 734 i1->ident->equals(i2->ident)) | |
| 735 ) | |
| 736 ) | |
| 737 ) | |
| 738 { | |
| 739 ss->multiplyDefined(loc, s, s2); | |
| 740 break; | |
| 741 } | |
| 742 } | |
| 743 } | |
| 744 } | |
| 745 if (s) | |
| 746 { | |
| 747 Declaration *d = s->isDeclaration(); | |
| 748 if (d && d->protection == PROTprivate && !d->parent->isTemplateMixin()) | |
| 749 error("%s is private", d->toPrettyChars()); | |
| 750 } | |
| 751 } | |
| 752 return s; | |
| 753 } | |
| 754 | |
| 755 void ScopeDsymbol::importScope(ScopeDsymbol *s, enum PROT protection) | |
| 756 { | |
| 757 //printf("%s->ScopeDsymbol::importScope(%s, %d)\n", toChars(), s->toChars(), protection); | |
| 758 | |
| 759 // No circular or redundant import's | |
| 760 if (s != this) | |
| 761 { | |
| 762 if (!imports) | |
| 763 imports = new Array(); | |
| 764 else | |
| 765 { | |
| 766 for (int i = 0; i < imports->dim; i++) | |
| 767 { ScopeDsymbol *ss; | |
| 768 | |
| 769 ss = (ScopeDsymbol *) imports->data[i]; | |
| 770 if (ss == s) | |
| 771 { | |
| 772 if (protection > prots[i]) | |
| 773 prots[i] = protection; // upgrade access | |
| 774 return; | |
| 775 } | |
| 776 } | |
| 777 } | |
| 778 imports->push(s); | |
| 779 prots = (unsigned char *)mem.realloc(prots, imports->dim * sizeof(prots[0])); | |
| 780 prots[imports->dim - 1] = protection; | |
| 781 } | |
| 782 } | |
| 783 | |
| 784 int ScopeDsymbol::isforwardRef() | |
| 785 { | |
| 786 return (members == NULL); | |
| 787 } | |
| 788 | |
| 789 void ScopeDsymbol::defineRef(Dsymbol *s) | |
| 790 { | |
| 791 ScopeDsymbol *ss; | |
| 792 | |
| 793 ss = s->isScopeDsymbol(); | |
| 794 members = ss->members; | |
| 795 ss->members = NULL; | |
| 796 } | |
| 797 | |
| 798 void ScopeDsymbol::multiplyDefined(Loc loc, Dsymbol *s1, Dsymbol *s2) | |
| 799 { | |
| 800 #if 0 | |
| 801 printf("ScopeDsymbol::multiplyDefined()\n"); | |
| 802 printf("s1 = %p, '%s' kind = '%s', parent = %s\n", s1, s1->toChars(), s1->kind(), s1->parent ? s1->parent->toChars() : ""); | |
| 803 printf("s2 = %p, '%s' kind = '%s', parent = %s\n", s2, s2->toChars(), s2->kind(), s2->parent ? s2->parent->toChars() : ""); | |
| 804 #endif | |
| 805 if (loc.filename) | |
| 806 { ::error(loc, "%s at %s conflicts with %s at %s", | |
| 807 s1->toPrettyChars(), | |
| 808 s1->locToChars(), | |
| 809 s2->toPrettyChars(), | |
| 810 s2->locToChars()); | |
| 811 } | |
| 812 else | |
| 813 { | |
| 814 s1->error(loc, "conflicts with %s %s at %s", | |
| 815 s2->kind(), | |
| 816 s2->toPrettyChars(), | |
| 817 s2->locToChars()); | |
| 818 } | |
| 819 } | |
| 820 | |
| 821 Dsymbol *ScopeDsymbol::nameCollision(Dsymbol *s) | |
| 822 { | |
| 823 Dsymbol *sprev; | |
| 824 | |
| 825 // Look to see if we are defining a forward referenced symbol | |
| 826 | |
| 827 sprev = symtab->lookup(s->ident); | |
| 828 assert(sprev); | |
| 829 if (s->equals(sprev)) // if the same symbol | |
| 830 { | |
| 831 if (s->isforwardRef()) // if second declaration is a forward reference | |
| 832 return sprev; | |
| 833 if (sprev->isforwardRef()) | |
| 834 { | |
| 835 sprev->defineRef(s); // copy data from s into sprev | |
| 836 return sprev; | |
| 837 } | |
| 838 } | |
| 839 multiplyDefined(0, s, sprev); | |
| 840 return sprev; | |
| 841 } | |
| 842 | |
| 336 | 843 const char *ScopeDsymbol::kind() |
| 159 | 844 { |
| 845 return "ScopeDsymbol"; | |
| 846 } | |
| 847 | |
| 848 | |
| 849 /******************************************* | |
| 850 * Look for member of the form: | |
| 851 * const(MemberInfo)[] getMembers(string); | |
| 852 * Returns NULL if not found | |
| 853 */ | |
| 854 | |
| 336 | 855 #if DMDV2 |
| 159 | 856 FuncDeclaration *ScopeDsymbol::findGetMembers() |
| 857 { | |
| 858 Dsymbol *s = search_function(this, Id::getmembers); | |
| 859 FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL; | |
| 860 | |
| 861 #if 0 // Finish | |
| 862 static TypeFunction *tfgetmembers; | |
| 863 | |
| 864 if (!tfgetmembers) | |
| 865 { | |
| 866 Scope sc; | |
| 867 Arguments *arguments = new Arguments; | |
| 868 Arguments *arg = new Argument(STCin, Type::tchar->constOf()->arrayOf(), NULL, NULL); | |
| 869 arguments->push(arg); | |
| 870 | |
| 871 Type *tret = NULL; | |
| 872 tfgetmembers = new TypeFunction(arguments, tret, 0, LINKd); | |
| 873 tfgetmembers = (TypeFunction *)tfgetmembers->semantic(0, &sc); | |
| 874 } | |
| 875 if (fdx) | |
| 876 fdx = fdx->overloadExactMatch(tfgetmembers); | |
| 877 #endif | |
| 878 if (fdx && fdx->isVirtual()) | |
| 879 fdx = NULL; | |
| 880 | |
| 881 return fdx; | |
| 882 } | |
| 883 #endif | |
| 884 | |
| 885 | |
| 886 /****************************** WithScopeSymbol ******************************/ | |
| 887 | |
| 888 WithScopeSymbol::WithScopeSymbol(WithStatement *withstate) | |
| 889 : ScopeDsymbol() | |
| 890 { | |
| 891 this->withstate = withstate; | |
| 892 } | |
| 893 | |
| 894 Dsymbol *WithScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 895 { | |
| 896 // Acts as proxy to the with class declaration | |
| 897 return withstate->exp->type->toDsymbol(NULL)->search(loc, ident, 0); | |
| 898 } | |
| 899 | |
| 900 /****************************** ArrayScopeSymbol ******************************/ | |
| 901 | |
| 902 ArrayScopeSymbol::ArrayScopeSymbol(Expression *e) | |
| 903 : ScopeDsymbol() | |
| 904 { | |
| 905 assert(e->op == TOKindex || e->op == TOKslice); | |
| 906 exp = e; | |
| 907 type = NULL; | |
| 908 td = NULL; | |
| 909 } | |
| 910 | |
| 911 ArrayScopeSymbol::ArrayScopeSymbol(TypeTuple *t) | |
| 912 : ScopeDsymbol() | |
| 913 { | |
| 914 exp = NULL; | |
| 915 type = t; | |
| 916 td = NULL; | |
| 917 } | |
| 918 | |
| 919 ArrayScopeSymbol::ArrayScopeSymbol(TupleDeclaration *s) | |
| 920 : ScopeDsymbol() | |
| 921 { | |
| 922 exp = NULL; | |
| 923 type = NULL; | |
| 924 td = s; | |
| 925 } | |
| 926 | |
| 927 Dsymbol *ArrayScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 928 { | |
| 929 //printf("ArrayScopeSymbol::search('%s', flags = %d)\n", ident->toChars(), flags); | |
| 930 if (ident == Id::length || ident == Id::dollar) | |
| 931 { VarDeclaration **pvar; | |
| 932 Expression *ce; | |
| 933 | |
| 934 L1: | |
| 935 | |
| 936 if (td) | |
| 937 { | |
| 938 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 939 Expression *e = new IntegerExp(0, td->objects->dim, Type::tsize_t); | |
| 940 v->init = new ExpInitializer(0, e); | |
| 941 v->storage_class |= STCconst; | |
| 942 return v; | |
| 943 } | |
| 944 | |
| 945 if (type) | |
| 946 { | |
| 947 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 948 Expression *e = new IntegerExp(0, type->arguments->dim, Type::tsize_t); | |
| 949 v->init = new ExpInitializer(0, e); | |
| 950 v->storage_class |= STCconst; | |
| 951 return v; | |
| 952 } | |
| 953 | |
| 954 if (exp->op == TOKindex) | |
| 955 { | |
| 956 IndexExp *ie = (IndexExp *)exp; | |
| 957 | |
| 958 pvar = &ie->lengthVar; | |
| 959 ce = ie->e1; | |
| 960 } | |
| 961 else if (exp->op == TOKslice) | |
| 962 { | |
| 963 SliceExp *se = (SliceExp *)exp; | |
| 964 | |
| 965 pvar = &se->lengthVar; | |
| 966 ce = se->e1; | |
| 967 } | |
| 968 else | |
| 969 return NULL; | |
| 970 | |
| 971 if (ce->op == TOKtype) | |
| 972 { | |
| 973 Type *t = ((TypeExp *)ce)->type; | |
| 974 if (t->ty == Ttuple) | |
| 975 { type = (TypeTuple *)t; | |
| 976 goto L1; | |
| 977 } | |
| 978 } | |
| 979 | |
| 980 if (!*pvar) | |
| 981 { | |
| 982 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); | |
| 983 | |
| 984 if (ce->op == TOKstring) | |
| 985 { /* It is for a string literal, so the | |
| 986 * length will be a const. | |
| 987 */ | |
| 988 Expression *e = new IntegerExp(0, ((StringExp *)ce)->len, Type::tsize_t); | |
| 989 v->init = new ExpInitializer(0, e); | |
| 990 v->storage_class |= STCconst; | |
| 991 } | |
| 992 else if (ce->op == TOKarrayliteral) | |
| 993 { /* It is for an array literal, so the | |
| 994 * length will be a const. | |
| 995 */ | |
| 996 Expression *e = new IntegerExp(0, ((ArrayLiteralExp *)ce)->elements->dim, Type::tsize_t); | |
| 997 v->init = new ExpInitializer(0, e); | |
| 998 v->storage_class |= STCconst; | |
| 999 } | |
| 1000 else if (ce->op == TOKtuple) | |
| 1001 { /* It is for an expression tuple, so the | |
| 1002 * length will be a const. | |
| 1003 */ | |
| 1004 Expression *e = new IntegerExp(0, ((TupleExp *)ce)->exps->dim, Type::tsize_t); | |
| 1005 v->init = new ExpInitializer(0, e); | |
| 1006 v->storage_class |= STCconst; | |
| 1007 } | |
| 1008 *pvar = v; | |
| 1009 } | |
| 1010 return (*pvar); | |
| 1011 } | |
| 1012 return NULL; | |
| 1013 } | |
| 1014 | |
| 1015 | |
| 1016 /****************************** DsymbolTable ******************************/ | |
| 1017 | |
| 1018 DsymbolTable::DsymbolTable() | |
| 1019 { | |
| 1020 tab = new StringTable; | |
| 1021 } | |
| 1022 | |
| 1023 DsymbolTable::~DsymbolTable() | |
| 1024 { | |
| 1025 delete tab; | |
| 1026 } | |
| 1027 | |
| 1028 Dsymbol *DsymbolTable::lookup(Identifier *ident) | |
| 1029 { StringValue *sv; | |
| 1030 | |
| 1031 #ifdef DEBUG | |
| 1032 assert(ident); | |
| 1033 assert(tab); | |
| 1034 #endif | |
| 1035 sv = tab->lookup((char*)ident->string, ident->len); | |
| 1036 return (Dsymbol *)(sv ? sv->ptrvalue : NULL); | |
| 1037 } | |
| 1038 | |
| 1039 Dsymbol *DsymbolTable::insert(Dsymbol *s) | |
| 1040 { StringValue *sv; | |
| 1041 Identifier *ident; | |
| 1042 | |
| 1043 //printf("DsymbolTable::insert(this = %p, '%s')\n", this, s->ident->toChars()); | |
| 1044 ident = s->ident; | |
| 1045 #ifdef DEBUG | |
| 1046 assert(ident); | |
| 1047 assert(tab); | |
| 1048 #endif | |
| 1049 sv = tab->insert(ident->toChars(), ident->len); | |
| 1050 if (!sv) | |
| 1051 return NULL; // already in table | |
| 1052 sv->ptrvalue = s; | |
| 1053 return s; | |
| 1054 } | |
| 1055 | |
| 1056 Dsymbol *DsymbolTable::insert(Identifier *ident, Dsymbol *s) | |
| 1057 { StringValue *sv; | |
| 1058 | |
| 1059 //printf("DsymbolTable::insert()\n"); | |
| 1060 sv = tab->insert(ident->toChars(), ident->len); | |
| 1061 if (!sv) | |
| 1062 return NULL; // already in table | |
| 1063 sv->ptrvalue = s; | |
| 1064 return s; | |
| 1065 } | |
| 1066 | |
| 1067 Dsymbol *DsymbolTable::update(Dsymbol *s) | |
| 1068 { StringValue *sv; | |
| 1069 Identifier *ident; | |
| 1070 | |
| 1071 ident = s->ident; | |
| 1072 sv = tab->update(ident->toChars(), ident->len); | |
| 1073 sv->ptrvalue = s; | |
| 1074 return s; | |
| 1075 } | |
| 1076 | |
| 1077 | |
| 1078 | |
| 1079 |