Mercurial > projects > ldc
annotate dmd/dsymbol.c @ 1638:0de4525a9ed6
Apply workaround for #395 by klickverbot.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 08 Mar 2010 20:06:08 +0100 |
| parents | 44b145be2ef5 |
| children | 9bf06e02070b |
| 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" |
|
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32 #if IN_LLVM |
| 159 | 33 #include "../gen/enums.h" |
|
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34 #endif |
| 159 | 35 |
| 36 /****************************** Dsymbol ******************************/ | |
| 37 | |
| 38 Dsymbol::Dsymbol() | |
| 39 { | |
| 40 //printf("Dsymbol::Dsymbol(%p)\n", this); | |
| 41 this->ident = NULL; | |
| 42 this->c_ident = NULL; | |
| 43 this->parent = NULL; | |
|
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44 #if IN_DMD |
| 159 | 45 this->csym = NULL; |
| 46 this->isym = NULL; | |
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47 #endif |
| 159 | 48 this->loc = 0; |
| 49 this->comment = NULL; | |
| 1587 | 50 this->scope = NULL; |
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51 #if IN_LLVM |
| 159 | 52 this->llvmInternal = LLVMnone; |
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53 this->irsym = NULL; |
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54 #endif |
| 159 | 55 } |
| 56 | |
| 57 Dsymbol::Dsymbol(Identifier *ident) | |
| 58 { | |
| 59 //printf("Dsymbol::Dsymbol(%p, ident)\n", this); | |
| 60 this->ident = ident; | |
| 61 this->c_ident = NULL; | |
| 62 this->parent = NULL; | |
|
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63 #if IN_DMD |
| 159 | 64 this->csym = NULL; |
| 65 this->isym = NULL; | |
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66 #endif |
| 159 | 67 this->loc = 0; |
| 68 this->comment = NULL; | |
| 1587 | 69 this->scope = NULL; |
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parents:
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70 #if IN_LLVM |
| 159 | 71 this->llvmInternal = LLVMnone; |
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72 this->irsym = NULL; |
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73 #endif |
| 159 | 74 } |
| 75 | |
| 76 int Dsymbol::equals(Object *o) | |
| 77 { Dsymbol *s; | |
| 78 | |
| 79 if (this == o) | |
| 80 return TRUE; | |
| 81 s = (Dsymbol *)(o); | |
| 82 if (s && ident->equals(s->ident)) | |
| 83 return TRUE; | |
| 84 return FALSE; | |
| 85 } | |
| 86 | |
| 87 /************************************** | |
| 88 * Copy the syntax. | |
| 89 * Used for template instantiations. | |
| 90 * If s is NULL, allocate the new object, otherwise fill it in. | |
| 91 */ | |
| 92 | |
| 93 Dsymbol *Dsymbol::syntaxCopy(Dsymbol *s) | |
| 94 { | |
| 95 print(); | |
| 96 printf("%s %s\n", kind(), toChars()); | |
| 97 assert(0); | |
| 98 return NULL; | |
| 99 } | |
| 100 | |
| 101 /************************************** | |
| 102 * Determine if this symbol is only one. | |
| 103 * Returns: | |
| 104 * FALSE, *ps = NULL: There are 2 or more symbols | |
| 105 * TRUE, *ps = NULL: There are zero symbols | |
| 106 * TRUE, *ps = symbol: The one and only one symbol | |
| 107 */ | |
| 108 | |
| 109 int Dsymbol::oneMember(Dsymbol **ps) | |
| 110 { | |
| 111 //printf("Dsymbol::oneMember()\n"); | |
| 112 *ps = this; | |
| 113 return TRUE; | |
| 114 } | |
| 115 | |
| 116 /***************************************** | |
| 117 * Same as Dsymbol::oneMember(), but look at an array of Dsymbols. | |
| 118 */ | |
| 119 | |
| 120 int Dsymbol::oneMembers(Array *members, Dsymbol **ps) | |
| 121 { | |
| 122 //printf("Dsymbol::oneMembers() %d\n", members ? members->dim : 0); | |
| 123 Dsymbol *s = NULL; | |
| 124 | |
| 125 if (members) | |
| 126 { | |
| 127 for (int i = 0; i < members->dim; i++) | |
| 128 { Dsymbol *sx = (Dsymbol *)members->data[i]; | |
| 129 | |
| 130 int x = sx->oneMember(ps); | |
| 131 //printf("\t[%d] kind %s = %d, s = %p\n", i, sx->kind(), x, *ps); | |
| 132 if (!x) | |
| 133 { | |
| 134 //printf("\tfalse 1\n"); | |
| 135 assert(*ps == NULL); | |
| 136 return FALSE; | |
| 137 } | |
| 138 if (*ps) | |
| 139 { | |
| 140 if (s) // more than one symbol | |
| 141 { *ps = NULL; | |
| 142 //printf("\tfalse 2\n"); | |
| 143 return FALSE; | |
| 144 } | |
| 145 s = *ps; | |
| 146 } | |
| 147 } | |
| 148 } | |
| 149 *ps = s; // s is the one symbol, NULL if none | |
| 150 //printf("\ttrue\n"); | |
| 151 return TRUE; | |
| 152 } | |
| 153 | |
| 154 /***************************************** | |
| 155 * Is Dsymbol a variable that contains pointers? | |
| 156 */ | |
| 157 | |
| 158 int Dsymbol::hasPointers() | |
| 159 { | |
| 160 //printf("Dsymbol::hasPointers() %s\n", toChars()); | |
| 161 return 0; | |
| 162 } | |
| 163 | |
| 164 char *Dsymbol::toChars() | |
| 165 { | |
| 166 return ident ? ident->toChars() : (char *)"__anonymous"; | |
| 167 } | |
| 168 | |
| 1587 | 169 const char *Dsymbol::toPrettyChars() |
| 159 | 170 { Dsymbol *p; |
| 171 char *s; | |
| 172 char *q; | |
| 173 size_t len; | |
| 174 | |
| 175 //printf("Dsymbol::toPrettyChars() '%s'\n", toChars()); | |
| 176 if (!parent) | |
| 177 return toChars(); | |
| 178 | |
| 179 len = 0; | |
| 180 for (p = this; p; p = p->parent) | |
| 181 len += strlen(p->toChars()) + 1; | |
| 182 | |
| 183 s = (char *)mem.malloc(len); | |
| 184 q = s + len - 1; | |
| 185 *q = 0; | |
| 186 for (p = this; p; p = p->parent) | |
| 187 { | |
| 188 char *t = p->toChars(); | |
| 189 len = strlen(t); | |
| 190 q -= len; | |
| 191 memcpy(q, t, len); | |
| 192 if (q == s) | |
| 193 break; | |
| 194 q--; | |
| 1587 | 195 #if TARGET_NET |
| 196 if (AggregateDeclaration* ad = p->isAggregateDeclaration()) | |
| 197 { | |
| 198 if (ad->isNested() && p->parent && p->parent->isAggregateDeclaration()) | |
| 199 { | |
| 200 *q = '/'; | |
| 201 continue; | |
| 202 } | |
| 203 } | |
| 204 #endif | |
| 159 | 205 *q = '.'; |
| 206 } | |
| 207 return s; | |
| 208 } | |
| 209 | |
| 210 char *Dsymbol::locToChars() | |
| 211 { | |
| 212 OutBuffer buf; | |
| 213 char *p; | |
| 214 | |
| 215 Module *m = getModule(); | |
| 216 | |
| 217 if (m && m->srcfile) | |
| 218 loc.filename = m->srcfile->toChars(); | |
| 219 return loc.toChars(); | |
| 220 } | |
| 221 | |
| 336 | 222 const char *Dsymbol::kind() |
| 159 | 223 { |
| 224 return "symbol"; | |
| 225 } | |
| 226 | |
| 227 /********************************* | |
| 228 * If this symbol is really an alias for another, | |
| 229 * return that other. | |
| 230 */ | |
| 231 | |
| 232 Dsymbol *Dsymbol::toAlias() | |
| 233 { | |
| 234 return this; | |
| 235 } | |
| 236 | |
| 237 Dsymbol *Dsymbol::toParent() | |
| 238 { | |
| 239 return parent ? parent->pastMixin() : NULL; | |
| 240 } | |
| 241 | |
| 242 Dsymbol *Dsymbol::pastMixin() | |
| 243 { | |
| 244 Dsymbol *s = this; | |
| 245 | |
| 246 //printf("Dsymbol::pastMixin() %s\n", toChars()); | |
| 247 while (s && s->isTemplateMixin()) | |
| 248 s = s->parent; | |
| 249 return s; | |
| 250 } | |
| 251 | |
| 252 /********************************** | |
| 253 * Use this instead of toParent() when looking for the | |
| 254 * 'this' pointer of the enclosing function/class. | |
| 255 */ | |
| 256 | |
| 257 Dsymbol *Dsymbol::toParent2() | |
| 258 { | |
| 259 Dsymbol *s = parent; | |
| 260 while (s && s->isTemplateInstance()) | |
| 261 s = s->parent; | |
| 262 return s; | |
| 263 } | |
| 264 | |
| 336 | 265 TemplateInstance *Dsymbol::inTemplateInstance() |
| 266 { | |
| 267 for (Dsymbol *parent = this->parent; parent; parent = parent->parent) | |
| 268 { | |
| 269 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 270 if (ti) | |
| 271 return ti; | |
| 272 } | |
| 273 return NULL; | |
| 274 } | |
| 159 | 275 |
| 276 int Dsymbol::isAnonymous() | |
| 277 { | |
| 278 return ident ? 0 : 1; | |
| 279 } | |
| 280 | |
| 1587 | 281 /************************************* |
| 282 * Set scope for future semantic analysis so we can | |
| 283 * deal better with forward references. | |
| 284 */ | |
| 285 | |
| 286 void Dsymbol::setScope(Scope *sc) | |
| 287 { | |
| 288 //printf("Dsymbol::setScope() %p %s\n", this, toChars()); | |
| 289 if (!sc->nofree) | |
| 290 sc->setNoFree(); // may need it even after semantic() finishes | |
| 291 scope = sc; | |
| 292 } | |
| 293 | |
| 294 void Dsymbol::importAll(Scope *sc) | |
| 295 { | |
| 296 } | |
| 297 | |
| 298 /************************************* | |
| 299 * Does semantic analysis on the public face of declarations. | |
| 300 */ | |
| 301 | |
| 159 | 302 void Dsymbol::semantic(Scope *sc) |
| 303 { | |
| 304 error("%p has no semantic routine", this); | |
| 305 } | |
| 306 | |
| 1587 | 307 /************************************* |
| 308 * Does semantic analysis on initializers and members of aggregates. | |
| 309 */ | |
| 310 | |
| 159 | 311 void Dsymbol::semantic2(Scope *sc) |
| 312 { | |
| 313 // Most Dsymbols have no further semantic analysis needed | |
| 314 } | |
| 315 | |
| 1587 | 316 /************************************* |
| 317 * Does semantic analysis on function bodies. | |
| 318 */ | |
| 319 | |
| 159 | 320 void Dsymbol::semantic3(Scope *sc) |
| 321 { | |
| 322 // Most Dsymbols have no further semantic analysis needed | |
| 323 } | |
| 324 | |
| 1587 | 325 /************************************* |
| 326 * Look for function inlining possibilities. | |
| 327 */ | |
| 328 | |
| 159 | 329 void Dsymbol::inlineScan() |
| 330 { | |
| 1587 | 331 // Most Dsymbols aren't functions |
| 159 | 332 } |
| 333 | |
| 336 | 334 /********************************************* |
| 335 * Search for ident as member of s. | |
| 336 * Input: | |
| 337 * flags: 1 don't find private members | |
| 338 * 2 don't give error messages | |
| 339 * 4 return NULL if ambiguous | |
| 340 * Returns: | |
| 341 * NULL if not found | |
| 342 */ | |
| 343 | |
| 159 | 344 Dsymbol *Dsymbol::search(Loc loc, Identifier *ident, int flags) |
| 345 { | |
| 346 //printf("Dsymbol::search(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 347 return NULL; | |
| 348 } | |
| 349 | |
| 350 /*************************************** | |
| 351 * Search for identifier id as a member of 'this'. | |
| 352 * id may be a template instance. | |
| 353 * Returns: | |
| 354 * symbol found, NULL if not | |
| 355 */ | |
| 356 | |
| 357 Dsymbol *Dsymbol::searchX(Loc loc, Scope *sc, Identifier *id) | |
| 358 { | |
| 359 //printf("Dsymbol::searchX(this=%p,%s, ident='%s')\n", this, toChars(), ident->toChars()); | |
| 360 Dsymbol *s = toAlias(); | |
| 361 Dsymbol *sm; | |
| 362 | |
| 363 switch (id->dyncast()) | |
| 364 { | |
| 365 case DYNCAST_IDENTIFIER: | |
| 366 sm = s->search(loc, id, 0); | |
| 367 break; | |
| 368 | |
| 369 case DYNCAST_DSYMBOL: | |
| 370 { // It's a template instance | |
| 371 //printf("\ttemplate instance id\n"); | |
| 372 Dsymbol *st = (Dsymbol *)id; | |
| 373 TemplateInstance *ti = st->isTemplateInstance(); | |
| 374 id = ti->name; | |
| 375 sm = s->search(loc, id, 0); | |
| 376 if (!sm) | |
| 377 { error("template identifier %s is not a member of %s %s", | |
| 378 id->toChars(), s->kind(), s->toChars()); | |
| 379 return NULL; | |
| 380 } | |
| 381 sm = sm->toAlias(); | |
| 382 TemplateDeclaration *td = sm->isTemplateDeclaration(); | |
| 383 if (!td) | |
| 384 { | |
| 385 error("%s is not a template, it is a %s", id->toChars(), sm->kind()); | |
| 386 return NULL; | |
| 387 } | |
| 388 ti->tempdecl = td; | |
| 1587 | 389 if (!ti->semanticRun) |
| 159 | 390 ti->semantic(sc); |
| 391 sm = ti->toAlias(); | |
| 392 break; | |
| 393 } | |
| 394 | |
| 395 default: | |
| 396 assert(0); | |
| 397 } | |
| 398 return sm; | |
| 399 } | |
| 400 | |
| 401 int Dsymbol::overloadInsert(Dsymbol *s) | |
| 402 { | |
| 403 //printf("Dsymbol::overloadInsert('%s')\n", s->toChars()); | |
| 404 return FALSE; | |
| 405 } | |
| 406 | |
| 407 void Dsymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 408 { | |
| 409 buf->writestring(toChars()); | |
| 410 } | |
| 411 | |
| 412 unsigned Dsymbol::size(Loc loc) | |
| 413 { | |
| 414 error("Dsymbol '%s' has no size\n", toChars()); | |
| 415 return 0; | |
| 416 } | |
| 417 | |
| 418 int Dsymbol::isforwardRef() | |
| 419 { | |
| 420 return FALSE; | |
| 421 } | |
| 422 | |
| 423 AggregateDeclaration *Dsymbol::isThis() | |
| 424 { | |
| 425 return NULL; | |
| 426 } | |
| 427 | |
| 428 ClassDeclaration *Dsymbol::isClassMember() // are we a member of a class? | |
| 429 { | |
| 430 Dsymbol *parent = toParent(); | |
| 431 if (parent && parent->isClassDeclaration()) | |
| 432 return (ClassDeclaration *)parent; | |
| 433 return NULL; | |
| 434 } | |
| 435 | |
| 436 void Dsymbol::defineRef(Dsymbol *s) | |
| 437 { | |
| 438 assert(0); | |
| 439 } | |
| 440 | |
| 441 int Dsymbol::isExport() | |
| 442 { | |
| 443 return FALSE; | |
| 444 } | |
| 445 | |
| 446 int Dsymbol::isImportedSymbol() | |
| 447 { | |
| 448 return FALSE; | |
| 449 } | |
| 450 | |
| 451 int Dsymbol::isDeprecated() | |
| 452 { | |
| 453 return FALSE; | |
| 454 } | |
| 455 | |
| 1587 | 456 #if DMDV2 |
| 457 int Dsymbol::isOverloadable() | |
| 458 { | |
| 459 return 0; | |
| 460 } | |
| 461 #endif | |
| 462 | |
| 159 | 463 LabelDsymbol *Dsymbol::isLabel() // is this a LabelDsymbol()? |
| 464 { | |
| 465 return NULL; | |
| 466 } | |
| 467 | |
| 468 AggregateDeclaration *Dsymbol::isMember() // is this a member of an AggregateDeclaration? | |
| 469 { | |
| 336 | 470 //printf("Dsymbol::isMember() %s\n", toChars()); |
| 159 | 471 Dsymbol *parent = toParent(); |
| 336 | 472 //printf("parent is %s %s\n", parent->kind(), parent->toChars()); |
| 159 | 473 return parent ? parent->isAggregateDeclaration() : NULL; |
| 474 } | |
| 475 | |
| 476 Type *Dsymbol::getType() | |
| 477 { | |
| 478 return NULL; | |
| 479 } | |
| 480 | |
| 481 int Dsymbol::needThis() | |
| 482 { | |
| 483 return FALSE; | |
| 484 } | |
| 485 | |
| 486 int Dsymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) | |
| 487 { | |
| 488 //printf("Dsymbol::addMember('%s')\n", toChars()); | |
| 489 //printf("Dsymbol::addMember(this = %p, '%s' scopesym = '%s')\n", this, toChars(), sd->toChars()); | |
| 490 //printf("Dsymbol::addMember(this = %p, '%s' sd = %p, sd->symtab = %p)\n", this, toChars(), sd, sd->symtab); | |
| 491 parent = sd; | |
| 492 if (!isAnonymous()) // no name, so can't add it to symbol table | |
| 493 { | |
| 1587 | 494 if (!sd->symtabInsert(this)) // if name is already defined |
| 159 | 495 { |
| 496 Dsymbol *s2; | |
| 497 | |
| 498 s2 = sd->symtab->lookup(ident); | |
| 499 if (!s2->overloadInsert(this)) | |
| 500 { | |
| 501 sd->multiplyDefined(0, this, s2); | |
| 502 } | |
| 503 } | |
| 504 if (sd->isAggregateDeclaration() || sd->isEnumDeclaration()) | |
| 505 { | |
| 506 if (ident == Id::__sizeof || ident == Id::alignof || ident == Id::mangleof) | |
| 507 error(".%s property cannot be redefined", ident->toChars()); | |
| 508 } | |
| 509 return 1; | |
| 510 } | |
| 511 return 0; | |
| 512 } | |
| 513 | |
| 514 void Dsymbol::error(const char *format, ...) | |
| 515 { | |
| 516 //printf("Dsymbol::error()\n"); | |
| 517 if (!global.gag) | |
| 518 { | |
| 519 char *p = locToChars(); | |
| 520 | |
| 521 if (*p) | |
| 522 fprintf(stdmsg, "%s: ", p); | |
| 523 mem.free(p); | |
| 524 | |
|
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525 fprintf(stdmsg, "Error: "); |
| 159 | 526 if (isAnonymous()) |
| 527 fprintf(stdmsg, "%s ", kind()); | |
| 528 else | |
| 529 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); | |
| 530 | |
| 531 va_list ap; | |
| 532 va_start(ap, format); | |
| 533 vfprintf(stdmsg, format, ap); | |
| 534 va_end(ap); | |
| 535 | |
| 536 fprintf(stdmsg, "\n"); | |
| 537 fflush(stdmsg); | |
| 538 } | |
| 539 global.errors++; | |
| 540 | |
| 541 //fatal(); | |
| 542 } | |
| 543 | |
| 544 void Dsymbol::error(Loc loc, const char *format, ...) | |
| 545 { | |
| 546 if (!global.gag) | |
| 547 { | |
| 548 char *p = loc.toChars(); | |
| 549 if (!*p) | |
| 550 p = locToChars(); | |
| 551 | |
| 552 if (*p) | |
| 553 fprintf(stdmsg, "%s: ", p); | |
| 554 mem.free(p); | |
| 555 | |
|
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556 fprintf(stdmsg, "Error: "); |
| 159 | 557 fprintf(stdmsg, "%s %s ", kind(), toPrettyChars()); |
| 558 | |
| 559 va_list ap; | |
| 560 va_start(ap, format); | |
| 561 vfprintf(stdmsg, format, ap); | |
| 562 va_end(ap); | |
| 563 | |
| 564 fprintf(stdmsg, "\n"); | |
| 565 fflush(stdmsg); | |
| 566 } | |
| 567 | |
| 568 global.errors++; | |
| 569 | |
| 570 //fatal(); | |
| 571 } | |
| 572 | |
| 573 void Dsymbol::checkDeprecated(Loc loc, Scope *sc) | |
| 574 { | |
| 575 if (!global.params.useDeprecated && isDeprecated()) | |
| 576 { | |
| 577 // Don't complain if we're inside a deprecated symbol's scope | |
| 578 for (Dsymbol *sp = sc->parent; sp; sp = sp->parent) | |
| 579 { if (sp->isDeprecated()) | |
| 580 return; | |
| 581 } | |
| 582 | |
| 583 for (; sc; sc = sc->enclosing) | |
| 584 { | |
| 585 if (sc->scopesym && sc->scopesym->isDeprecated()) | |
| 586 return; | |
| 336 | 587 |
| 588 // If inside a StorageClassDeclaration that is deprecated | |
| 589 if (sc->stc & STCdeprecated) | |
| 590 return; | |
| 159 | 591 } |
| 592 | |
| 593 error(loc, "is deprecated"); | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 /********************************** | |
| 598 * Determine which Module a Dsymbol is in. | |
| 599 */ | |
| 600 | |
| 601 Module *Dsymbol::getModule() | |
| 602 { | |
| 603 Module *m; | |
| 604 Dsymbol *s; | |
| 605 | |
| 606 //printf("Dsymbol::getModule()\n"); | |
| 607 s = this; | |
| 608 while (s) | |
| 609 { | |
| 610 //printf("\ts = '%s'\n", s->toChars()); | |
| 611 m = s->isModule(); | |
| 612 if (m) | |
| 613 return m; | |
| 614 s = s->parent; | |
| 615 } | |
| 616 return NULL; | |
| 617 } | |
| 618 | |
|
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619 |
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620 /********************************** |
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621 * Determine which Module a Dsymbol will be compiled in. |
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622 * This may be different from getModule for templates. |
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623 */ |
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624 |
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625 Module *Dsymbol::getCompilationModule() |
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626 { |
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627 Module *m; |
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628 TemplateInstance *ti; |
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629 Dsymbol *s; |
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630 |
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631 //printf("Dsymbol::getModule()\n"); |
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632 s = this; |
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633 while (s) |
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634 { |
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635 //printf("\ts = '%s'\n", s->toChars()); |
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636 m = s->isModule(); |
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637 if (m) |
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638 return m; |
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639 ti = s->isTemplateInstance(); |
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640 if (ti && ti->tmodule) |
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641 return ti->tmodule; |
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642 s = s->parent; |
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643 } |
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644 return NULL; |
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645 } |
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646 |
| 159 | 647 /************************************* |
| 648 */ | |
| 649 | |
| 650 enum PROT Dsymbol::prot() | |
| 651 { | |
| 652 return PROTpublic; | |
| 653 } | |
| 654 | |
| 655 /************************************* | |
| 656 * Do syntax copy of an array of Dsymbol's. | |
| 657 */ | |
| 658 | |
| 659 | |
| 660 Array *Dsymbol::arraySyntaxCopy(Array *a) | |
| 661 { | |
| 662 | |
| 663 Array *b = NULL; | |
| 664 if (a) | |
| 665 { | |
| 666 b = a->copy(); | |
| 667 for (int i = 0; i < b->dim; i++) | |
| 668 { | |
| 669 Dsymbol *s = (Dsymbol *)b->data[i]; | |
| 670 | |
| 671 s = s->syntaxCopy(NULL); | |
| 672 b->data[i] = (void *)s; | |
| 673 } | |
| 674 } | |
| 675 return b; | |
| 676 } | |
| 677 | |
| 678 | |
| 679 /**************************************** | |
| 680 * Add documentation comment to Dsymbol. | |
| 681 * Ignore NULL comments. | |
| 682 */ | |
| 683 | |
| 684 void Dsymbol::addComment(unsigned char *comment) | |
| 685 { | |
| 1587 | 686 //if (comment) |
| 687 //printf("adding comment '%s' to symbol %p '%s'\n", comment, this, toChars()); | |
| 159 | 688 |
| 689 if (!this->comment) | |
| 690 this->comment = comment; | |
| 691 #if 1 | |
| 692 else if (comment && strcmp((char *)comment, (char *)this->comment)) | |
| 693 { // Concatenate the two | |
| 694 this->comment = Lexer::combineComments(this->comment, comment); | |
| 695 } | |
| 696 #endif | |
| 697 } | |
| 698 | |
| 1587 | 699 /********************************* OverloadSet ****************************/ |
| 700 | |
| 701 #if DMDV2 | |
| 702 OverloadSet::OverloadSet() | |
| 703 : Dsymbol() | |
| 704 { | |
| 705 } | |
| 706 | |
| 707 void OverloadSet::push(Dsymbol *s) | |
| 708 { | |
| 709 a.push(s); | |
| 710 } | |
| 711 | |
| 712 const char *OverloadSet::kind() | |
| 713 { | |
| 714 return "overloadset"; | |
| 715 } | |
| 716 #endif | |
| 717 | |
| 159 | 718 |
| 719 /********************************* ScopeDsymbol ****************************/ | |
| 720 | |
| 721 ScopeDsymbol::ScopeDsymbol() | |
| 722 : Dsymbol() | |
| 723 { | |
| 724 members = NULL; | |
| 725 symtab = NULL; | |
| 726 imports = NULL; | |
| 727 prots = NULL; | |
| 728 } | |
| 729 | |
| 730 ScopeDsymbol::ScopeDsymbol(Identifier *id) | |
| 731 : Dsymbol(id) | |
| 732 { | |
| 733 members = NULL; | |
| 734 symtab = NULL; | |
| 735 imports = NULL; | |
| 736 prots = NULL; | |
| 737 } | |
| 738 | |
| 739 Dsymbol *ScopeDsymbol::syntaxCopy(Dsymbol *s) | |
| 740 { | |
| 741 //printf("ScopeDsymbol::syntaxCopy('%s')\n", toChars()); | |
| 742 | |
| 743 ScopeDsymbol *sd; | |
| 744 if (s) | |
| 745 sd = (ScopeDsymbol *)s; | |
| 746 else | |
| 747 sd = new ScopeDsymbol(ident); | |
| 748 sd->members = arraySyntaxCopy(members); | |
| 749 return sd; | |
| 750 } | |
| 751 | |
| 752 Dsymbol *ScopeDsymbol::search(Loc loc, Identifier *ident, int flags) | |
| 336 | 753 { |
| 754 //printf("%s->ScopeDsymbol::search(ident='%s', flags=x%x)\n", toChars(), ident->toChars(), flags); | |
| 1587 | 755 //if (strcmp(ident->toChars(),"c") == 0) *(char*)0=0; |
| 159 | 756 |
| 757 // Look in symbols declared in this module | |
| 336 | 758 Dsymbol *s = symtab ? symtab->lookup(ident) : NULL; |
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760 // hide the aliases generated by selective or renamed private imports |
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761 if (s && flags & 1) |
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762 if (AliasDeclaration* ad = s->isAliasDeclaration()) |
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763 // may be a private alias to a function that is overloaded. these |
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764 // are sorted out during overload resolution, accept them here |
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765 if (ad->importprot == PROTprivate && !ad->aliassym->isFuncAliasDeclaration()) |
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766 s = NULL; |
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767 |
| 159 | 768 if (s) |
| 769 { | |
| 770 //printf("\ts = '%s.%s'\n",toChars(),s->toChars()); | |
| 771 } | |
| 772 else if (imports) | |
| 773 { | |
| 774 // Look in imported modules | |
| 336 | 775 for (int i = 0; i < imports->dim; i++) |
| 159 | 776 { ScopeDsymbol *ss = (ScopeDsymbol *)imports->data[i]; |
| 777 Dsymbol *s2; | |
| 778 | |
| 779 // If private import, don't search it | |
| 780 if (flags & 1 && prots[i] == PROTprivate) | |
| 781 continue; | |
| 782 | |
| 783 //printf("\tscanning import '%s', prots = %d, isModule = %p, isImport = %p\n", ss->toChars(), prots[i], ss->isModule(), ss->isImport()); | |
| 336 | 784 /* Don't find private members if ss is a module |
| 785 */ | |
| 159 | 786 s2 = ss->search(loc, ident, ss->isModule() ? 1 : 0); |
| 787 if (!s) | |
| 788 s = s2; | |
| 789 else if (s2 && s != s2) | |
| 790 { | |
| 791 if (s->toAlias() == s2->toAlias()) | |
| 792 { | |
| 336 | 793 /* After following aliases, we found the same symbol, |
| 794 * so it's not an ambiguity. | |
| 795 * But if one alias is deprecated, prefer the other. | |
| 796 */ | |
| 159 | 797 if (s->isDeprecated()) |
| 798 s = s2; | |
| 799 } | |
| 800 else | |
| 801 { | |
| 802 /* Two imports of the same module should be regarded as | |
| 803 * the same. | |
| 804 */ | |
| 805 Import *i1 = s->isImport(); | |
| 806 Import *i2 = s2->isImport(); | |
| 807 if (!(i1 && i2 && | |
| 808 (i1->mod == i2->mod || | |
| 809 (!i1->parent->isImport() && !i2->parent->isImport() && | |
| 810 i1->ident->equals(i2->ident)) | |
| 811 ) | |
| 812 ) | |
| 813 ) | |
| 814 { | |
| 815 ss->multiplyDefined(loc, s, s2); | |
| 816 break; | |
| 817 } | |
| 818 } | |
| 819 } | |
| 820 } | |
| 821 if (s) | |
| 822 { | |
| 823 Declaration *d = s->isDeclaration(); | |
| 824 if (d && d->protection == PROTprivate && !d->parent->isTemplateMixin()) | |
| 825 error("%s is private", d->toPrettyChars()); | |
| 826 } | |
| 827 } | |
| 828 return s; | |
| 829 } | |
| 830 | |
| 831 void ScopeDsymbol::importScope(ScopeDsymbol *s, enum PROT protection) | |
| 832 { | |
| 833 //printf("%s->ScopeDsymbol::importScope(%s, %d)\n", toChars(), s->toChars(), protection); | |
| 834 | |
| 835 // No circular or redundant import's | |
| 836 if (s != this) | |
| 837 { | |
| 838 if (!imports) | |
| 839 imports = new Array(); | |
| 840 else | |
| 841 { | |
| 842 for (int i = 0; i < imports->dim; i++) | |
| 843 { ScopeDsymbol *ss; | |
| 844 | |
| 845 ss = (ScopeDsymbol *) imports->data[i]; | |
| 1587 | 846 if (ss == s) // if already imported |
| 159 | 847 { |
| 848 if (protection > prots[i]) | |
| 849 prots[i] = protection; // upgrade access | |
| 850 return; | |
| 851 } | |
| 852 } | |
| 853 } | |
| 854 imports->push(s); | |
| 855 prots = (unsigned char *)mem.realloc(prots, imports->dim * sizeof(prots[0])); | |
| 856 prots[imports->dim - 1] = protection; | |
| 857 } | |
| 858 } | |
| 859 | |
| 860 int ScopeDsymbol::isforwardRef() | |
| 861 { | |
| 862 return (members == NULL); | |
| 863 } | |
| 864 | |
| 865 void ScopeDsymbol::defineRef(Dsymbol *s) | |
| 866 { | |
| 867 ScopeDsymbol *ss; | |
| 868 | |
| 869 ss = s->isScopeDsymbol(); | |
| 870 members = ss->members; | |
| 871 ss->members = NULL; | |
| 872 } | |
| 873 | |
| 874 void ScopeDsymbol::multiplyDefined(Loc loc, Dsymbol *s1, Dsymbol *s2) | |
| 875 { | |
| 876 #if 0 | |
| 877 printf("ScopeDsymbol::multiplyDefined()\n"); | |
| 878 printf("s1 = %p, '%s' kind = '%s', parent = %s\n", s1, s1->toChars(), s1->kind(), s1->parent ? s1->parent->toChars() : ""); | |
| 879 printf("s2 = %p, '%s' kind = '%s', parent = %s\n", s2, s2->toChars(), s2->kind(), s2->parent ? s2->parent->toChars() : ""); | |
| 880 #endif | |
| 881 if (loc.filename) | |
| 882 { ::error(loc, "%s at %s conflicts with %s at %s", | |
| 883 s1->toPrettyChars(), | |
| 884 s1->locToChars(), | |
| 885 s2->toPrettyChars(), | |
| 886 s2->locToChars()); | |
| 887 } | |
| 888 else | |
| 889 { | |
| 890 s1->error(loc, "conflicts with %s %s at %s", | |
| 891 s2->kind(), | |
| 892 s2->toPrettyChars(), | |
| 893 s2->locToChars()); | |
| 894 } | |
| 895 } | |
| 896 | |
| 897 Dsymbol *ScopeDsymbol::nameCollision(Dsymbol *s) | |
| 898 { | |
| 899 Dsymbol *sprev; | |
| 900 | |
| 901 // Look to see if we are defining a forward referenced symbol | |
| 902 | |
| 903 sprev = symtab->lookup(s->ident); | |
| 904 assert(sprev); | |
| 905 if (s->equals(sprev)) // if the same symbol | |
| 906 { | |
| 907 if (s->isforwardRef()) // if second declaration is a forward reference | |
| 908 return sprev; | |
| 909 if (sprev->isforwardRef()) | |
| 910 { | |
| 911 sprev->defineRef(s); // copy data from s into sprev | |
| 912 return sprev; | |
| 913 } | |
| 914 } | |
| 915 multiplyDefined(0, s, sprev); | |
| 916 return sprev; | |
| 917 } | |
| 918 | |
| 336 | 919 const char *ScopeDsymbol::kind() |
| 159 | 920 { |
| 921 return "ScopeDsymbol"; | |
| 922 } | |
| 923 | |
| 1587 | 924 Dsymbol *ScopeDsymbol::symtabInsert(Dsymbol *s) |
| 925 { | |
| 926 return symtab->insert(s); | |
| 927 } | |
| 928 | |
| 929 /*************************************** | |
| 930 * Determine number of Dsymbols, folding in AttribDeclaration members. | |
| 931 */ | |
| 932 | |
| 933 #if DMDV2 | |
| 934 size_t ScopeDsymbol::dim(Array *members) | |
| 935 { | |
| 936 size_t n = 0; | |
| 937 if (members) | |
| 938 { | |
| 939 for (size_t i = 0; i < members->dim; i++) | |
| 940 { Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 941 AttribDeclaration *a = s->isAttribDeclaration(); | |
| 942 | |
| 943 if (a) | |
| 944 { | |
| 945 n += dim(a->decl); | |
| 946 } | |
| 947 else | |
| 948 n++; | |
| 949 } | |
| 950 } | |
| 951 return n; | |
| 952 } | |
| 953 #endif | |
| 954 | |
| 955 /*************************************** | |
| 956 * Get nth Dsymbol, folding in AttribDeclaration members. | |
| 957 * Returns: | |
| 958 * Dsymbol* nth Dsymbol | |
| 959 * NULL not found, *pn gets incremented by the number | |
| 960 * of Dsymbols | |
| 961 */ | |
| 962 | |
| 963 #if DMDV2 | |
| 964 Dsymbol *ScopeDsymbol::getNth(Array *members, size_t nth, size_t *pn) | |
| 965 { | |
| 966 if (!members) | |
| 967 return NULL; | |
| 968 | |
| 969 size_t n = 0; | |
| 970 for (size_t i = 0; i < members->dim; i++) | |
| 971 { Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 972 AttribDeclaration *a = s->isAttribDeclaration(); | |
| 973 | |
| 974 if (a) | |
| 975 { | |
| 976 s = getNth(a->decl, nth - n, &n); | |
| 977 if (s) | |
| 978 return s; | |
| 979 } | |
| 980 else if (n == nth) | |
| 981 return s; | |
| 982 else | |
| 983 n++; | |
| 984 } | |
| 985 | |
| 986 if (pn) | |
| 987 *pn += n; | |
| 988 return NULL; | |
| 989 } | |
| 990 #endif | |
| 159 | 991 |
| 992 /******************************************* | |
| 993 * Look for member of the form: | |
| 994 * const(MemberInfo)[] getMembers(string); | |
| 995 * Returns NULL if not found | |
| 996 */ | |
| 997 | |
| 336 | 998 #if DMDV2 |
| 159 | 999 FuncDeclaration *ScopeDsymbol::findGetMembers() |
| 1000 { | |
| 1001 Dsymbol *s = search_function(this, Id::getmembers); | |
| 1002 FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL; | |
| 1003 | |
| 1004 #if 0 // Finish | |
| 1005 static TypeFunction *tfgetmembers; | |
| 1006 | |
| 1007 if (!tfgetmembers) | |
| 1008 { | |
| 1009 Scope sc; | |
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1010 Parameters *arguments = new Parameters; |
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1011 Parameters *arg = new Parameter(STCin, Type::tchar->constOf()->arrayOf(), NULL, NULL); |
| 159 | 1012 arguments->push(arg); |
| 1013 | |
| 1014 Type *tret = NULL; | |
| 1015 tfgetmembers = new TypeFunction(arguments, tret, 0, LINKd); | |
| 1016 tfgetmembers = (TypeFunction *)tfgetmembers->semantic(0, &sc); | |
| 1017 } | |
| 1018 if (fdx) | |
| 1019 fdx = fdx->overloadExactMatch(tfgetmembers); | |
| 1020 #endif | |
| 1021 if (fdx && fdx->isVirtual()) | |
| 1022 fdx = NULL; | |
| 1023 | |
| 1024 return fdx; | |
| 1025 } | |
| 1026 #endif | |
| 1027 | |
| 1028 | |
| 1029 /****************************** WithScopeSymbol ******************************/ | |
| 1030 | |
| 1031 WithScopeSymbol::WithScopeSymbol(WithStatement *withstate) | |
| 1032 : ScopeDsymbol() | |
| 1033 { | |
| 1034 this->withstate = withstate; | |
| 1035 } | |
| 1036 | |
| 1037 Dsymbol *WithScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 1038 { | |
| 1039 // Acts as proxy to the with class declaration | |
| 1040 return withstate->exp->type->toDsymbol(NULL)->search(loc, ident, 0); | |
| 1041 } | |
| 1042 | |
| 1043 /****************************** ArrayScopeSymbol ******************************/ | |
| 1044 | |
| 1045 ArrayScopeSymbol::ArrayScopeSymbol(Expression *e) | |
| 1046 : ScopeDsymbol() | |
| 1047 { | |
| 1048 assert(e->op == TOKindex || e->op == TOKslice); | |
| 1049 exp = e; | |
| 1050 type = NULL; | |
| 1051 td = NULL; | |
| 1052 } | |
| 1053 | |
| 1054 ArrayScopeSymbol::ArrayScopeSymbol(TypeTuple *t) | |
| 1055 : ScopeDsymbol() | |
| 1056 { | |
| 1057 exp = NULL; | |
| 1058 type = t; | |
| 1059 td = NULL; | |
| 1060 } | |
| 1061 | |
| 1062 ArrayScopeSymbol::ArrayScopeSymbol(TupleDeclaration *s) | |
| 1063 : ScopeDsymbol() | |
| 1064 { | |
| 1065 exp = NULL; | |
| 1066 type = NULL; | |
| 1067 td = s; | |
| 1068 } | |
| 1069 | |
| 1070 Dsymbol *ArrayScopeSymbol::search(Loc loc, Identifier *ident, int flags) | |
| 1071 { | |
| 1072 //printf("ArrayScopeSymbol::search('%s', flags = %d)\n", ident->toChars(), flags); | |
| 1073 if (ident == Id::length || ident == Id::dollar) | |
| 1074 { VarDeclaration **pvar; | |
| 1075 Expression *ce; | |
| 1076 | |
| 1077 L1: | |
| 1078 | |
| 1079 if (td) | |
| 1587 | 1080 { /* $ gives the number of elements in the tuple |
| 1081 */ | |
| 159 | 1082 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1083 Expression *e = new IntegerExp(0, td->objects->dim, Type::tsize_t); | |
| 1084 v->init = new ExpInitializer(0, e); | |
| 1085 v->storage_class |= STCconst; | |
| 1086 return v; | |
| 1087 } | |
| 1088 | |
| 1089 if (type) | |
| 1587 | 1090 { /* $ gives the number of type entries in the type tuple |
| 1091 */ | |
| 159 | 1092 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1093 Expression *e = new IntegerExp(0, type->arguments->dim, Type::tsize_t); | |
| 1094 v->init = new ExpInitializer(0, e); | |
| 1095 v->storage_class |= STCconst; | |
| 1096 return v; | |
| 1097 } | |
| 1098 | |
| 1099 if (exp->op == TOKindex) | |
| 1587 | 1100 { /* array[index] where index is some function of $ |
| 1101 */ | |
| 159 | 1102 IndexExp *ie = (IndexExp *)exp; |
| 1103 | |
| 1104 pvar = &ie->lengthVar; | |
| 1105 ce = ie->e1; | |
| 1106 } | |
| 1107 else if (exp->op == TOKslice) | |
| 1587 | 1108 { /* array[lwr .. upr] where lwr or upr is some function of $ |
| 1109 */ | |
| 159 | 1110 SliceExp *se = (SliceExp *)exp; |
| 1111 | |
| 1112 pvar = &se->lengthVar; | |
| 1113 ce = se->e1; | |
| 1114 } | |
| 1115 else | |
| 1587 | 1116 /* Didn't find $, look in enclosing scope(s). |
| 1117 */ | |
| 159 | 1118 return NULL; |
| 1119 | |
| 1587 | 1120 /* If we are indexing into an array that is really a type |
| 1121 * tuple, rewrite this as an index into a type tuple and | |
| 1122 * try again. | |
| 1123 */ | |
| 159 | 1124 if (ce->op == TOKtype) |
| 1125 { | |
| 1126 Type *t = ((TypeExp *)ce)->type; | |
| 1127 if (t->ty == Ttuple) | |
| 1128 { type = (TypeTuple *)t; | |
| 1129 goto L1; | |
| 1130 } | |
| 1131 } | |
| 1132 | |
| 1587 | 1133 /* *pvar is lazily initialized, so if we refer to $ |
| 1134 * multiple times, it gets set only once. | |
| 1135 */ | |
| 1136 if (!*pvar) // if not already initialized | |
| 1137 { /* Create variable v and set it to the value of $, | |
| 1138 * which will be a constant. | |
| 1139 */ | |
| 159 | 1140 VarDeclaration *v = new VarDeclaration(loc, Type::tsize_t, Id::dollar, NULL); |
| 1141 | |
| 1142 if (ce->op == TOKstring) | |
| 1143 { /* It is for a string literal, so the | |
| 1144 * length will be a const. | |
| 1145 */ | |
| 1146 Expression *e = new IntegerExp(0, ((StringExp *)ce)->len, Type::tsize_t); | |
| 1147 v->init = new ExpInitializer(0, e); | |
| 1148 v->storage_class |= STCconst; | |
| 1149 } | |
| 1150 else if (ce->op == TOKarrayliteral) | |
| 1151 { /* It is for an array literal, so the | |
| 1152 * length will be a const. | |
| 1153 */ | |
| 1154 Expression *e = new IntegerExp(0, ((ArrayLiteralExp *)ce)->elements->dim, Type::tsize_t); | |
| 1155 v->init = new ExpInitializer(0, e); | |
| 1156 v->storage_class |= STCconst; | |
| 1157 } | |
| 1158 else if (ce->op == TOKtuple) | |
| 1159 { /* It is for an expression tuple, so the | |
| 1160 * length will be a const. | |
| 1161 */ | |
| 1162 Expression *e = new IntegerExp(0, ((TupleExp *)ce)->exps->dim, Type::tsize_t); | |
| 1163 v->init = new ExpInitializer(0, e); | |
| 1164 v->storage_class |= STCconst; | |
| 1165 } | |
| 1166 *pvar = v; | |
| 1167 } | |
| 1168 return (*pvar); | |
| 1169 } | |
| 1170 return NULL; | |
| 1171 } | |
| 1172 | |
| 1173 | |
| 1174 /****************************** DsymbolTable ******************************/ | |
| 1175 | |
| 1176 DsymbolTable::DsymbolTable() | |
| 1177 { | |
| 1178 tab = new StringTable; | |
| 1179 } | |
| 1180 | |
| 1181 DsymbolTable::~DsymbolTable() | |
| 1182 { | |
| 1183 delete tab; | |
| 1184 } | |
| 1185 | |
| 1186 Dsymbol *DsymbolTable::lookup(Identifier *ident) | |
| 1587 | 1187 { |
| 159 | 1188 #ifdef DEBUG |
| 1189 assert(ident); | |
| 1190 assert(tab); | |
| 1191 #endif | |
| 1587 | 1192 StringValue *sv = tab->lookup((char*)ident->string, ident->len); |
| 159 | 1193 return (Dsymbol *)(sv ? sv->ptrvalue : NULL); |
| 1194 } | |
| 1195 | |
| 1196 Dsymbol *DsymbolTable::insert(Dsymbol *s) | |
| 1197 { StringValue *sv; | |
| 1198 Identifier *ident; | |
| 1199 | |
| 1200 //printf("DsymbolTable::insert(this = %p, '%s')\n", this, s->ident->toChars()); | |
| 1201 ident = s->ident; | |
| 1202 #ifdef DEBUG | |
| 1203 assert(ident); | |
| 1204 assert(tab); | |
| 1205 #endif | |
| 1206 sv = tab->insert(ident->toChars(), ident->len); | |
| 1207 if (!sv) | |
| 1208 return NULL; // already in table | |
| 1209 sv->ptrvalue = s; | |
| 1210 return s; | |
| 1211 } | |
| 1212 | |
| 1213 Dsymbol *DsymbolTable::insert(Identifier *ident, Dsymbol *s) | |
| 1214 { StringValue *sv; | |
| 1215 | |
| 1216 //printf("DsymbolTable::insert()\n"); | |
| 1217 sv = tab->insert(ident->toChars(), ident->len); | |
| 1218 if (!sv) | |
| 1219 return NULL; // already in table | |
| 1220 sv->ptrvalue = s; | |
| 1221 return s; | |
| 1222 } | |
| 1223 | |
| 1224 Dsymbol *DsymbolTable::update(Dsymbol *s) | |
| 1225 { StringValue *sv; | |
| 1226 Identifier *ident; | |
| 1227 | |
| 1228 ident = s->ident; | |
| 1229 sv = tab->update(ident->toChars(), ident->len); | |
| 1230 sv->ptrvalue = s; | |
| 1231 return s; | |
| 1232 } | |
| 1233 | |
| 1234 | |
| 1235 | |
| 1236 |