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annotate dmd/declaration.c @ 1621:fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Both DMD revisions are for fixing bugzilla 2029 (Typesafe variadic
functions don't work in CTFE).
The DMD r314 commit message is:
bugzilla 2029 (Typesafe variadic functions don't work in CTFE
The DMD r315 commit message is:
bugzilla 2029 - try again
---
dmd/constfold.c | 11 ++++-
dmd/declaration.c | 21 +++++++++-
dmd/declaration.h | 10 ++++-
dmd/expression.c | 1 +
dmd/interpret.c | 111 +++++++++++++++++++++++++++++++++++++++++++++--------
dmd/mars.h | 2 +-
dmd/mtype.c | 2 +-
7 files changed, 135 insertions(+), 23 deletions(-)
| author | Leandro Lucarella <llucax@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2010 15:18:22 -0300 |
| parents | c61782a76dff |
| children | 44b145be2ef5 |
| rev | line source |
|---|---|
| 1587 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2009 by Digital Mars | |
| 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 <assert.h> | |
| 13 | |
| 14 #include "init.h" | |
| 15 #include "declaration.h" | |
| 16 #include "attrib.h" | |
| 17 #include "mtype.h" | |
| 18 #include "template.h" | |
| 19 #include "scope.h" | |
| 20 #include "aggregate.h" | |
| 21 #include "module.h" | |
| 22 #include "id.h" | |
| 23 #include "expression.h" | |
| 24 #include "hdrgen.h" | |
| 25 | |
| 26 /********************************* Declaration ****************************/ | |
| 27 | |
| 28 Declaration::Declaration(Identifier *id) | |
| 29 : Dsymbol(id) | |
| 30 { | |
| 31 type = NULL; | |
| 32 originalType = NULL; | |
| 33 storage_class = STCundefined; | |
| 34 protection = PROTundefined; | |
| 35 linkage = LINKdefault; | |
| 36 inuse = 0; | |
| 37 } | |
| 38 | |
| 39 void Declaration::semantic(Scope *sc) | |
| 40 { | |
| 41 } | |
| 42 | |
| 43 const char *Declaration::kind() | |
| 44 { | |
| 45 return "declaration"; | |
| 46 } | |
| 47 | |
| 48 unsigned Declaration::size(Loc loc) | |
| 49 { | |
| 50 assert(type); | |
| 51 return type->size(); | |
| 52 } | |
| 53 | |
| 54 int Declaration::isStaticConstructor() | |
| 55 { | |
| 56 return FALSE; | |
| 57 } | |
| 58 | |
| 59 int Declaration::isStaticDestructor() | |
| 60 { | |
| 61 return FALSE; | |
| 62 } | |
| 63 | |
| 64 int Declaration::isDelete() | |
| 65 { | |
| 66 return FALSE; | |
| 67 } | |
| 68 | |
| 69 int Declaration::isDataseg() | |
| 70 { | |
| 71 return FALSE; | |
| 72 } | |
| 73 | |
| 74 int Declaration::isThreadlocal() | |
| 75 { | |
| 76 return FALSE; | |
| 77 } | |
| 78 | |
| 79 int Declaration::isCodeseg() | |
| 80 { | |
| 81 return FALSE; | |
| 82 } | |
| 83 | |
| 84 enum PROT Declaration::prot() | |
| 85 { | |
| 86 return protection; | |
| 87 } | |
| 88 | |
| 89 /************************************* | |
| 90 * Check to see if declaration can be modified in this context (sc). | |
| 91 * Issue error if not. | |
| 92 */ | |
| 93 | |
| 94 #if DMDV2 | |
| 95 void Declaration::checkModify(Loc loc, Scope *sc, Type *t) | |
| 96 { | |
| 97 if (sc->incontract && isParameter()) | |
| 98 error(loc, "cannot modify parameter '%s' in contract", toChars()); | |
| 99 | |
| 100 if (isCtorinit()) | |
| 101 { // It's only modifiable if inside the right constructor | |
| 102 Dsymbol *s = sc->func; | |
| 103 while (1) | |
| 104 { | |
| 105 FuncDeclaration *fd = NULL; | |
| 106 if (s) | |
| 107 fd = s->isFuncDeclaration(); | |
| 108 if (fd && | |
| 109 ((fd->isCtorDeclaration() && storage_class & STCfield) || | |
| 110 (fd->isStaticCtorDeclaration() && !(storage_class & STCfield))) && | |
| 111 fd->toParent() == toParent() | |
| 112 ) | |
| 113 { | |
| 114 VarDeclaration *v = isVarDeclaration(); | |
| 115 assert(v); | |
| 116 v->ctorinit = 1; | |
| 117 //printf("setting ctorinit\n"); | |
| 118 } | |
| 119 else | |
| 120 { | |
| 121 if (s) | |
| 122 { s = s->toParent2(); | |
| 123 continue; | |
| 124 } | |
| 125 else | |
| 126 { | |
| 127 const char *p = isStatic() ? "static " : ""; | |
| 128 error(loc, "can only initialize %sconst %s inside %sconstructor", | |
| 129 p, toChars(), p); | |
| 130 } | |
| 131 } | |
| 132 break; | |
| 133 } | |
| 134 } | |
| 135 else | |
| 136 { | |
| 137 VarDeclaration *v = isVarDeclaration(); | |
| 138 if (v && v->canassign == 0) | |
| 139 { | |
| 140 const char *p = NULL; | |
| 141 if (isConst()) | |
| 142 p = "const"; | |
|
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Merge DMD r304: refactor invariant => immutable
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parents:
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diff
changeset
|
143 else if (isImmutable()) |
| 1587 | 144 p = "immutable"; |
| 145 else if (storage_class & STCmanifest) | |
| 146 p = "enum"; | |
| 147 else if (!t->isAssignable()) | |
| 148 p = "struct with immutable members"; | |
| 149 if (p) | |
| 150 { error(loc, "cannot modify %s", p); | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 } | |
| 155 #endif | |
| 156 | |
| 157 | |
| 158 /********************************* TupleDeclaration ****************************/ | |
| 159 | |
| 160 TupleDeclaration::TupleDeclaration(Loc loc, Identifier *id, Objects *objects) | |
| 161 : Declaration(id) | |
| 162 { | |
| 163 this->type = NULL; | |
| 164 this->objects = objects; | |
| 165 this->isexp = 0; | |
| 166 this->tupletype = NULL; | |
| 167 } | |
| 168 | |
| 169 Dsymbol *TupleDeclaration::syntaxCopy(Dsymbol *s) | |
| 170 { | |
| 171 assert(0); | |
| 172 return NULL; | |
| 173 } | |
| 174 | |
| 175 const char *TupleDeclaration::kind() | |
| 176 { | |
| 177 return "tuple"; | |
| 178 } | |
| 179 | |
| 180 Type *TupleDeclaration::getType() | |
| 181 { | |
| 182 /* If this tuple represents a type, return that type | |
| 183 */ | |
| 184 | |
| 185 //printf("TupleDeclaration::getType() %s\n", toChars()); | |
| 186 if (isexp) | |
| 187 return NULL; | |
| 188 if (!tupletype) | |
| 189 { | |
| 190 /* It's only a type tuple if all the Object's are types | |
| 191 */ | |
| 192 for (size_t i = 0; i < objects->dim; i++) | |
| 193 { Object *o = (Object *)objects->data[i]; | |
| 194 | |
| 195 if (o->dyncast() != DYNCAST_TYPE) | |
| 196 { | |
| 197 //printf("\tnot[%d], %p, %d\n", i, o, o->dyncast()); | |
| 198 return NULL; | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 /* We know it's a type tuple, so build the TypeTuple | |
| 203 */ | |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
204 Parameters *args = new Parameters(); |
| 1587 | 205 args->setDim(objects->dim); |
| 206 OutBuffer buf; | |
| 207 int hasdeco = 1; | |
| 208 for (size_t i = 0; i < objects->dim; i++) | |
| 209 { Type *t = (Type *)objects->data[i]; | |
| 210 | |
| 211 //printf("type = %s\n", t->toChars()); | |
| 212 #if 0 | |
| 213 buf.printf("_%s_%d", ident->toChars(), i); | |
| 214 char *name = (char *)buf.extractData(); | |
| 215 Identifier *id = new Identifier(name, TOKidentifier); | |
|
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207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
216 Parameter *arg = new Parameter(STCin, t, id, NULL); |
| 1587 | 217 #else |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
218 Parameter *arg = new Parameter(STCin, t, NULL, NULL); |
| 1587 | 219 #endif |
| 220 args->data[i] = (void *)arg; | |
| 221 if (!t->deco) | |
| 222 hasdeco = 0; | |
| 223 } | |
| 224 | |
| 225 tupletype = new TypeTuple(args); | |
| 226 if (hasdeco) | |
| 227 return tupletype->semantic(0, NULL); | |
| 228 } | |
| 229 | |
| 230 return tupletype; | |
| 231 } | |
| 232 | |
| 233 int TupleDeclaration::needThis() | |
| 234 { | |
| 235 //printf("TupleDeclaration::needThis(%s)\n", toChars()); | |
| 236 for (size_t i = 0; i < objects->dim; i++) | |
| 237 { Object *o = (Object *)objects->data[i]; | |
| 238 if (o->dyncast() == DYNCAST_EXPRESSION) | |
| 239 { Expression *e = (Expression *)o; | |
| 240 if (e->op == TOKdsymbol) | |
| 241 { DsymbolExp *ve = (DsymbolExp *)e; | |
| 242 Declaration *d = ve->s->isDeclaration(); | |
| 243 if (d && d->needThis()) | |
| 244 { | |
| 245 return 1; | |
| 246 } | |
| 247 } | |
| 248 } | |
| 249 } | |
| 250 return 0; | |
| 251 } | |
| 252 | |
| 253 /********************************* TypedefDeclaration ****************************/ | |
| 254 | |
| 255 TypedefDeclaration::TypedefDeclaration(Loc loc, Identifier *id, Type *basetype, Initializer *init) | |
| 256 : Declaration(id) | |
| 257 { | |
| 258 this->type = new TypeTypedef(this); | |
| 259 this->basetype = basetype->toBasetype(); | |
| 260 this->init = init; | |
| 261 #ifdef _DH | |
| 262 this->htype = NULL; | |
| 263 this->hbasetype = NULL; | |
| 264 #endif | |
| 265 this->sem = 0; | |
| 266 this->loc = loc; | |
| 267 #if IN_DMD | |
| 268 this->sinit = NULL; | |
| 269 #endif | |
| 270 } | |
| 271 | |
| 272 Dsymbol *TypedefDeclaration::syntaxCopy(Dsymbol *s) | |
| 273 { | |
| 274 Type *basetype = this->basetype->syntaxCopy(); | |
| 275 | |
| 276 Initializer *init = NULL; | |
| 277 if (this->init) | |
| 278 init = this->init->syntaxCopy(); | |
| 279 | |
| 280 assert(!s); | |
| 281 TypedefDeclaration *st; | |
| 282 st = new TypedefDeclaration(loc, ident, basetype, init); | |
| 283 #ifdef _DH | |
| 284 // Syntax copy for header file | |
| 285 if (!htype) // Don't overwrite original | |
| 286 { if (type) // Make copy for both old and new instances | |
| 287 { htype = type->syntaxCopy(); | |
| 288 st->htype = type->syntaxCopy(); | |
| 289 } | |
| 290 } | |
| 291 else // Make copy of original for new instance | |
| 292 st->htype = htype->syntaxCopy(); | |
| 293 if (!hbasetype) | |
| 294 { if (basetype) | |
| 295 { hbasetype = basetype->syntaxCopy(); | |
| 296 st->hbasetype = basetype->syntaxCopy(); | |
| 297 } | |
| 298 } | |
| 299 else | |
| 300 st->hbasetype = hbasetype->syntaxCopy(); | |
| 301 #endif | |
| 302 return st; | |
| 303 } | |
| 304 | |
| 305 void TypedefDeclaration::semantic(Scope *sc) | |
| 306 { | |
| 307 //printf("TypedefDeclaration::semantic(%s) sem = %d\n", toChars(), sem); | |
| 308 if (sem == 0) | |
| 309 { sem = 1; | |
| 310 basetype = basetype->semantic(loc, sc); | |
| 311 sem = 2; | |
|
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Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
312 #if DMDV2 |
|
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
313 type = type->addStorageClass(storage_class); |
|
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
314 #endif |
| 1587 | 315 type = type->semantic(loc, sc); |
| 316 if (sc->parent->isFuncDeclaration() && init) | |
| 317 semantic2(sc); | |
| 318 storage_class |= sc->stc & STCdeprecated; | |
| 319 } | |
| 320 else if (sem == 1) | |
| 321 { | |
| 322 error("circular definition"); | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 void TypedefDeclaration::semantic2(Scope *sc) | |
| 327 { | |
| 328 //printf("TypedefDeclaration::semantic2(%s) sem = %d\n", toChars(), sem); | |
| 329 if (sem == 2) | |
| 330 { sem = 3; | |
| 331 if (init) | |
| 332 { | |
| 333 init = init->semantic(sc, basetype); | |
| 334 | |
| 335 ExpInitializer *ie = init->isExpInitializer(); | |
| 336 if (ie) | |
| 337 { | |
| 338 if (ie->exp->type == basetype) | |
| 339 ie->exp->type = type; | |
| 340 } | |
| 341 } | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 const char *TypedefDeclaration::kind() | |
| 346 { | |
| 347 return "typedef"; | |
| 348 } | |
| 349 | |
| 350 Type *TypedefDeclaration::getType() | |
| 351 { | |
| 352 return type; | |
| 353 } | |
| 354 | |
| 355 void TypedefDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 356 { | |
| 357 buf->writestring("typedef "); | |
| 358 basetype->toCBuffer(buf, ident, hgs); | |
| 359 if (init) | |
| 360 { | |
| 361 buf->writestring(" = "); | |
| 362 init->toCBuffer(buf, hgs); | |
| 363 } | |
| 364 buf->writeByte(';'); | |
| 365 buf->writenl(); | |
| 366 } | |
| 367 | |
| 368 /********************************* AliasDeclaration ****************************/ | |
| 369 | |
| 370 AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Type *type) | |
| 371 : Declaration(id) | |
| 372 { | |
| 373 //printf("AliasDeclaration(id = '%s', type = %p)\n", id->toChars(), type); | |
| 374 //printf("type = '%s'\n", type->toChars()); | |
| 375 this->loc = loc; | |
| 376 this->type = type; | |
| 377 this->aliassym = NULL; | |
| 378 #ifdef _DH | |
| 379 this->htype = NULL; | |
| 380 this->haliassym = NULL; | |
| 381 #endif | |
| 382 this->overnext = NULL; | |
| 383 this->inSemantic = 0; | |
| 384 this->importprot = PROTundefined; | |
| 385 assert(type); | |
| 386 } | |
| 387 | |
| 388 AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Dsymbol *s) | |
| 389 : Declaration(id) | |
| 390 { | |
| 391 //printf("AliasDeclaration(id = '%s', s = %p)\n", id->toChars(), s); | |
| 392 assert(s != this); | |
| 393 this->loc = loc; | |
| 394 this->type = NULL; | |
| 395 this->aliassym = s; | |
| 396 #ifdef _DH | |
| 397 this->htype = NULL; | |
| 398 this->haliassym = NULL; | |
| 399 #endif | |
| 400 this->overnext = NULL; | |
| 401 this->inSemantic = 0; | |
| 402 assert(s); | |
| 403 } | |
| 404 | |
| 405 Dsymbol *AliasDeclaration::syntaxCopy(Dsymbol *s) | |
| 406 { | |
| 407 //printf("AliasDeclaration::syntaxCopy()\n"); | |
| 408 assert(!s); | |
| 409 AliasDeclaration *sa; | |
| 410 if (type) | |
| 411 sa = new AliasDeclaration(loc, ident, type->syntaxCopy()); | |
| 412 else | |
| 413 sa = new AliasDeclaration(loc, ident, aliassym->syntaxCopy(NULL)); | |
| 414 #ifdef _DH | |
| 415 // Syntax copy for header file | |
| 416 if (!htype) // Don't overwrite original | |
| 417 { if (type) // Make copy for both old and new instances | |
| 418 { htype = type->syntaxCopy(); | |
| 419 sa->htype = type->syntaxCopy(); | |
| 420 } | |
| 421 } | |
| 422 else // Make copy of original for new instance | |
| 423 sa->htype = htype->syntaxCopy(); | |
| 424 if (!haliassym) | |
| 425 { if (aliassym) | |
| 426 { haliassym = aliassym->syntaxCopy(s); | |
| 427 sa->haliassym = aliassym->syntaxCopy(s); | |
| 428 } | |
| 429 } | |
| 430 else | |
| 431 sa->haliassym = haliassym->syntaxCopy(s); | |
| 432 #endif | |
| 433 return sa; | |
| 434 } | |
| 435 | |
| 436 void AliasDeclaration::semantic(Scope *sc) | |
| 437 { | |
| 438 //printf("AliasDeclaration::semantic() %s\n", toChars()); | |
| 439 if (aliassym) | |
| 440 { | |
| 441 if (aliassym->isTemplateInstance()) | |
| 442 aliassym->semantic(sc); | |
| 443 return; | |
| 444 } | |
| 445 this->inSemantic = 1; | |
| 446 | |
|
1621
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
447 #if DMDV1 // don't really know why this is here |
| 1587 | 448 if (storage_class & STCconst) |
| 449 error("cannot be const"); | |
|
1621
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
450 #endif |
| 1587 | 451 |
| 452 storage_class |= sc->stc & STCdeprecated; | |
| 453 | |
| 454 // Given: | |
| 455 // alias foo.bar.abc def; | |
| 456 // it is not knowable from the syntax whether this is an alias | |
| 457 // for a type or an alias for a symbol. It is up to the semantic() | |
| 458 // pass to distinguish. | |
| 459 // If it is a type, then type is set and getType() will return that | |
| 460 // type. If it is a symbol, then aliassym is set and type is NULL - | |
| 461 // toAlias() will return aliasssym. | |
| 462 | |
| 463 Dsymbol *s; | |
| 464 Type *t; | |
| 465 Expression *e; | |
| 466 | |
| 467 /* This section is needed because resolve() will: | |
| 468 * const x = 3; | |
| 469 * alias x y; | |
| 470 * try to alias y to 3. | |
| 471 */ | |
| 472 s = type->toDsymbol(sc); | |
| 473 if (s | |
| 474 #if DMDV2 | |
| 475 ` && ((s->getType() && type->equals(s->getType())) || s->isEnumMember()) | |
| 476 #endif | |
| 477 ) | |
| 478 goto L2; // it's a symbolic alias | |
| 479 | |
| 480 #if DMDV2 | |
|
1621
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
481 type = type->addStorageClass(storage_class); |
| 1587 | 482 if (storage_class & (STCref | STCnothrow | STCpure)) |
| 483 { // For 'ref' to be attached to function types, and picked | |
| 484 // up by Type::resolve(), it has to go into sc. | |
| 485 sc = sc->push(); | |
|
1621
fb2e6707ad17
Merge DMD r314+r315: bugzilla 2029 Typesafe variadic functions don't...
Leandro Lucarella <llucax@gmail.com>
parents:
1619
diff
changeset
|
486 sc->stc |= storage_class & (STCref | STCnothrow | STCpure | STCshared); |
| 1587 | 487 type->resolve(loc, sc, &e, &t, &s); |
| 488 sc = sc->pop(); | |
| 489 } | |
| 490 else | |
| 491 #endif | |
| 492 type->resolve(loc, sc, &e, &t, &s); | |
| 493 if (s) | |
| 494 { | |
| 495 goto L2; | |
| 496 } | |
| 497 else if (e) | |
| 498 { | |
| 499 // Try to convert Expression to Dsymbol | |
| 500 if (e->op == TOKvar) | |
| 501 { s = ((VarExp *)e)->var; | |
| 502 goto L2; | |
| 503 } | |
| 504 else if (e->op == TOKfunction) | |
| 505 { s = ((FuncExp *)e)->fd; | |
| 506 goto L2; | |
| 507 } | |
| 508 else | |
| 509 { error("cannot alias an expression %s", e->toChars()); | |
| 510 t = e->type; | |
| 511 } | |
| 512 } | |
| 513 else if (t) | |
| 514 { | |
| 515 type = t; | |
| 516 } | |
| 517 if (overnext) | |
| 518 ScopeDsymbol::multiplyDefined(0, this, overnext); | |
| 519 this->inSemantic = 0; | |
| 520 return; | |
| 521 | |
| 522 L2: | |
| 523 //printf("alias is a symbol %s %s\n", s->kind(), s->toChars()); | |
| 524 type = NULL; | |
| 525 VarDeclaration *v = s->isVarDeclaration(); | |
| 526 if (v && v->linkage == LINKdefault) | |
| 527 { | |
| 528 error("forward reference of %s", v->toChars()); | |
| 529 s = NULL; | |
| 530 } | |
| 531 else | |
| 532 { | |
| 533 FuncDeclaration *f = s->toAlias()->isFuncDeclaration(); | |
| 534 if (f) | |
| 535 { | |
| 536 if (overnext) | |
| 537 { | |
| 538 FuncAliasDeclaration *fa = new FuncAliasDeclaration(f); | |
| 539 fa->importprot = importprot; | |
| 540 if (!fa->overloadInsert(overnext)) | |
| 541 ScopeDsymbol::multiplyDefined(0, f, overnext); | |
| 542 overnext = NULL; | |
| 543 s = fa; | |
| 544 s->parent = sc->parent; | |
| 545 } | |
| 546 } | |
| 547 if (overnext) | |
| 548 ScopeDsymbol::multiplyDefined(0, s, overnext); | |
| 549 if (s == this) | |
| 550 { | |
| 551 assert(global.errors); | |
| 552 s = NULL; | |
| 553 } | |
| 554 } | |
| 555 if (!aliassym) | |
| 556 aliassym = s; | |
| 557 this->inSemantic = 0; | |
| 558 } | |
| 559 | |
| 560 int AliasDeclaration::overloadInsert(Dsymbol *s) | |
| 561 { | |
| 562 /* Don't know yet what the aliased symbol is, so assume it can | |
| 563 * be overloaded and check later for correctness. | |
| 564 */ | |
| 565 | |
| 566 //printf("AliasDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 567 if (overnext == NULL) | |
| 568 { | |
| 569 if (s == this) | |
| 570 { | |
| 571 return TRUE; | |
| 572 } | |
| 573 overnext = s; | |
| 574 return TRUE; | |
| 575 } | |
| 576 else | |
| 577 { | |
| 578 return overnext->overloadInsert(s); | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 const char *AliasDeclaration::kind() | |
| 583 { | |
| 584 return "alias"; | |
| 585 } | |
| 586 | |
| 587 Type *AliasDeclaration::getType() | |
| 588 { | |
| 589 //printf("AliasDeclaration::getType() %s\n", type->toChars()); | |
| 590 #if 0 | |
| 591 if (!type->deco && scope) | |
| 592 semantic(scope); | |
| 593 if (type && !type->deco) | |
| 594 error("forward reference to alias %s\n", toChars()); | |
| 595 #endif | |
| 596 return type; | |
| 597 } | |
| 598 | |
| 599 Dsymbol *AliasDeclaration::toAlias() | |
| 600 { | |
| 601 //printf("AliasDeclaration::toAlias('%s', this = %p, aliassym = %p, kind = '%s')\n", toChars(), this, aliassym, aliassym ? aliassym->kind() : ""); | |
| 602 assert(this != aliassym); | |
| 603 //static int count; if (++count == 75) exit(0); //*(char*)0=0; | |
| 604 if (inSemantic) | |
| 605 { error("recursive alias declaration"); | |
| 606 aliassym = new TypedefDeclaration(loc, ident, Type::terror, NULL); | |
| 607 } | |
| 608 Dsymbol *s = aliassym ? aliassym->toAlias() : this; | |
| 609 return s; | |
| 610 } | |
| 611 | |
| 612 void AliasDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 613 { | |
| 614 buf->writestring("alias "); | |
| 615 #if 0 && _DH | |
| 616 if (hgs->hdrgen) | |
| 617 { | |
| 618 if (haliassym) | |
| 619 { | |
| 620 buf->writestring(haliassym->toChars()); | |
| 621 buf->writeByte(' '); | |
| 622 buf->writestring(ident->toChars()); | |
| 623 } | |
| 624 else | |
| 625 htype->toCBuffer(buf, ident, hgs); | |
| 626 } | |
| 627 else | |
| 628 #endif | |
| 629 { | |
| 630 if (aliassym) | |
| 631 { | |
| 632 buf->writestring(aliassym->toChars()); | |
| 633 buf->writeByte(' '); | |
| 634 buf->writestring(ident->toChars()); | |
| 635 } | |
| 636 else | |
| 637 type->toCBuffer(buf, ident, hgs); | |
| 638 } | |
| 639 buf->writeByte(';'); | |
| 640 buf->writenl(); | |
| 641 } | |
| 642 | |
| 643 /********************************* VarDeclaration ****************************/ | |
| 644 | |
| 645 VarDeclaration::VarDeclaration(Loc loc, Type *type, Identifier *id, Initializer *init) | |
| 646 : Declaration(id) | |
| 647 { | |
| 648 //printf("VarDeclaration('%s')\n", id->toChars()); | |
| 649 #ifdef DEBUG | |
| 650 if (!type && !init) | |
| 651 { printf("VarDeclaration('%s')\n", id->toChars()); | |
| 652 //*(char*)0=0; | |
| 653 } | |
| 654 #endif | |
| 655 assert(type || init); | |
| 656 this->type = type; | |
| 657 this->init = init; | |
| 658 #ifdef _DH | |
| 659 this->htype = NULL; | |
| 660 this->hinit = NULL; | |
| 661 #endif | |
| 662 this->loc = loc; | |
| 663 offset = 0; | |
| 664 noscope = 0; | |
| 665 #if DMDV1 | |
| 666 nestedref = 0; | |
| 667 #endif | |
| 668 ctorinit = 0; | |
| 669 aliassym = NULL; | |
| 670 onstack = 0; | |
| 671 canassign = 0; | |
| 672 value = NULL; | |
| 673 | |
| 674 #if IN_LLVM | |
| 675 aggrIndex = 0; | |
| 676 | |
| 677 // LDC | |
| 678 anonDecl = NULL; | |
| 679 offset2 = 0; | |
| 680 | |
| 681 nakedUse = false; | |
| 682 | |
| 683 availableExternally = true; // assume this unless proven otherwise | |
| 684 #endif | |
| 685 } | |
| 686 | |
| 687 Dsymbol *VarDeclaration::syntaxCopy(Dsymbol *s) | |
| 688 { | |
| 689 //printf("VarDeclaration::syntaxCopy(%s)\n", toChars()); | |
| 690 | |
| 691 VarDeclaration *sv; | |
| 692 if (s) | |
| 693 { sv = (VarDeclaration *)s; | |
| 694 } | |
| 695 else | |
| 696 { | |
| 697 Initializer *init = NULL; | |
| 698 if (this->init) | |
| 699 { init = this->init->syntaxCopy(); | |
| 700 //init->isExpInitializer()->exp->print(); | |
| 701 //init->isExpInitializer()->exp->dump(0); | |
| 702 } | |
| 703 | |
| 704 sv = new VarDeclaration(loc, type ? type->syntaxCopy() : NULL, ident, init); | |
| 705 sv->storage_class = storage_class; | |
| 706 } | |
| 707 #ifdef _DH | |
| 708 // Syntax copy for header file | |
| 709 if (!htype) // Don't overwrite original | |
| 710 { if (type) // Make copy for both old and new instances | |
| 711 { htype = type->syntaxCopy(); | |
| 712 sv->htype = type->syntaxCopy(); | |
| 713 } | |
| 714 } | |
| 715 else // Make copy of original for new instance | |
| 716 sv->htype = htype->syntaxCopy(); | |
| 717 if (!hinit) | |
| 718 { if (init) | |
| 719 { hinit = init->syntaxCopy(); | |
| 720 sv->hinit = init->syntaxCopy(); | |
| 721 } | |
| 722 } | |
| 723 else | |
| 724 sv->hinit = hinit->syntaxCopy(); | |
| 725 #endif | |
| 726 return sv; | |
| 727 } | |
| 728 | |
| 729 void VarDeclaration::semantic(Scope *sc) | |
| 730 { | |
| 731 #if 0 | |
| 732 printf("VarDeclaration::semantic('%s', parent = '%s')\n", toChars(), sc->parent->toChars()); | |
| 733 printf(" type = %s\n", type ? type->toChars() : "null"); | |
| 734 printf(" stc = x%x\n", sc->stc); | |
| 735 printf(" storage_class = x%x\n", storage_class); | |
| 736 printf("linkage = %d\n", sc->linkage); | |
| 737 //if (strcmp(toChars(), "mul") == 0) halt(); | |
| 738 #endif | |
| 739 | |
| 740 storage_class |= sc->stc; | |
| 741 if (storage_class & STCextern && init) | |
| 742 error("extern symbols cannot have initializers"); | |
| 743 | |
| 744 /* If auto type inference, do the inference | |
| 745 */ | |
| 746 int inferred = 0; | |
| 747 if (!type) | |
| 748 { inuse++; | |
| 749 type = init->inferType(sc); | |
| 750 inuse--; | |
| 751 inferred = 1; | |
| 752 | |
| 753 /* This is a kludge to support the existing syntax for RAII | |
| 754 * declarations. | |
| 755 */ | |
| 756 storage_class &= ~STCauto; | |
| 757 originalType = type; | |
| 758 } | |
| 759 else | |
| 760 { if (!originalType) | |
| 761 originalType = type; | |
| 762 type = type->semantic(loc, sc); | |
| 763 } | |
| 764 //printf(" semantic type = %s\n", type ? type->toChars() : "null"); | |
| 765 | |
| 766 type->checkDeprecated(loc, sc); | |
| 767 linkage = sc->linkage; | |
| 768 this->parent = sc->parent; | |
| 769 //printf("this = %p, parent = %p, '%s'\n", this, parent, parent->toChars()); | |
| 770 protection = sc->protection; | |
| 771 //printf("sc->stc = %x\n", sc->stc); | |
| 772 //printf("storage_class = x%x\n", storage_class); | |
| 773 | |
| 774 #if DMDV2 | |
| 775 if (storage_class & STCgshared && global.params.safe && !sc->module->safe) | |
| 776 { | |
| 777 error("__gshared not allowed in safe mode; use shared"); | |
| 778 } | |
| 779 #endif | |
| 780 | |
| 781 Dsymbol *parent = toParent(); | |
| 782 FuncDeclaration *fd = parent->isFuncDeclaration(); | |
| 783 | |
| 784 Type *tb = type->toBasetype(); | |
| 785 if (tb->ty == Tvoid && !(storage_class & STClazy)) | |
| 786 { error("voids have no value"); | |
| 787 type = Type::terror; | |
| 788 tb = type; | |
| 789 } | |
| 790 if (tb->ty == Tfunction) | |
| 791 { error("cannot be declared to be a function"); | |
| 792 type = Type::terror; | |
| 793 tb = type; | |
| 794 } | |
| 795 if (tb->ty == Tstruct) | |
| 796 { TypeStruct *ts = (TypeStruct *)tb; | |
| 797 | |
| 798 if (!ts->sym->members) | |
| 799 { | |
| 800 error("no definition of struct %s", ts->toChars()); | |
| 801 } | |
| 802 } | |
| 803 if ((storage_class & STCauto) && !inferred) | |
| 804 error("both auto and explicit type given"); | |
| 805 | |
| 806 if (tb->ty == Ttuple) | |
| 807 { /* Instead, declare variables for each of the tuple elements | |
| 808 * and add those. | |
| 809 */ | |
| 810 TypeTuple *tt = (TypeTuple *)tb; | |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
811 size_t nelems = Parameter::dim(tt->arguments); |
| 1587 | 812 Objects *exps = new Objects(); |
| 813 exps->setDim(nelems); | |
| 814 Expression *ie = init ? init->toExpression() : NULL; | |
| 815 | |
| 816 for (size_t i = 0; i < nelems; i++) | |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
817 { Parameter *arg = Parameter::getNth(tt->arguments, i); |
| 1587 | 818 |
| 819 OutBuffer buf; | |
| 820 buf.printf("_%s_field_%zu", ident->toChars(), i); | |
| 821 buf.writeByte(0); | |
| 822 char *name = (char *)buf.extractData(); | |
| 823 Identifier *id = new Identifier(name, TOKidentifier); | |
| 824 | |
| 825 Expression *einit = ie; | |
| 826 if (ie && ie->op == TOKtuple) | |
| 827 { einit = (Expression *)((TupleExp *)ie)->exps->data[i]; | |
| 828 } | |
| 829 Initializer *ti = init; | |
| 830 if (einit) | |
| 831 { ti = new ExpInitializer(einit->loc, einit); | |
| 832 } | |
| 833 | |
| 834 VarDeclaration *v = new VarDeclaration(loc, arg->type, id, ti); | |
| 835 //printf("declaring field %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 836 v->semantic(sc); | |
| 837 | |
| 838 /* | |
| 839 // removed for LDC since TupleDeclaration::toObj already creates the fields; | |
| 840 // adding them to the scope again leads to duplicates | |
| 841 if (sc->scopesym) | |
| 842 { //printf("adding %s to %s\n", v->toChars(), sc->scopesym->toChars()); | |
| 843 if (sc->scopesym->members) | |
| 844 sc->scopesym->members->push(v); | |
| 845 } | |
| 846 */ | |
| 847 Expression *e = new DsymbolExp(loc, v); | |
| 848 exps->data[i] = e; | |
| 849 } | |
| 850 TupleDeclaration *v2 = new TupleDeclaration(loc, ident, exps); | |
| 851 v2->isexp = 1; | |
| 852 aliassym = v2; | |
| 853 return; | |
| 854 } | |
| 855 | |
| 856 if (storage_class & STCconst && !init && !fd) | |
| 857 // Initialize by constructor only | |
| 858 storage_class = (storage_class & ~STCconst) | STCctorinit; | |
| 859 | |
| 860 if (isConst()) | |
| 861 { | |
| 862 } | |
| 863 else if (isStatic()) | |
| 864 { | |
| 865 } | |
| 866 else if (isSynchronized()) | |
| 867 { | |
| 868 error("variable %s cannot be synchronized", toChars()); | |
| 869 } | |
| 870 else if (isOverride()) | |
| 871 { | |
| 872 error("override cannot be applied to variable"); | |
| 873 } | |
| 874 else if (isAbstract()) | |
| 875 { | |
| 876 error("abstract cannot be applied to variable"); | |
| 877 } | |
| 878 else if (storage_class & STCtemplateparameter) | |
| 879 { | |
| 880 } | |
| 881 else | |
| 882 { | |
| 883 AggregateDeclaration *aad = sc->anonAgg; | |
| 884 if (!aad) | |
| 885 aad = parent->isAggregateDeclaration(); | |
| 886 if (aad) | |
| 887 { | |
| 888 #if DMDV2 | |
| 889 assert(!(storage_class & (STCextern | STCstatic | STCtls | STCgshared))); | |
| 890 | |
| 891 if (storage_class & (STCconst | STCimmutable) && init) | |
| 892 { | |
| 893 if (!type->toBasetype()->isTypeBasic()) | |
| 894 storage_class |= STCstatic; | |
| 895 } | |
| 896 else | |
| 897 #endif | |
| 898 aad->addField(sc, this); | |
| 899 } | |
| 900 | |
| 901 InterfaceDeclaration *id = parent->isInterfaceDeclaration(); | |
| 902 if (id) | |
| 903 { | |
| 904 error("field not allowed in interface"); | |
| 905 } | |
| 906 | |
| 907 /* Templates cannot add fields to aggregates | |
| 908 */ | |
| 909 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 910 if (ti) | |
| 911 { | |
| 912 // Take care of nested templates | |
| 913 while (1) | |
| 914 { | |
| 915 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 916 if (!ti2) | |
| 917 break; | |
| 918 ti = ti2; | |
| 919 } | |
| 920 | |
| 921 // If it's a member template | |
| 922 AggregateDeclaration *ad = ti->tempdecl->isMember(); | |
| 923 if (ad && storage_class != STCundefined) | |
| 924 { | |
| 925 error("cannot use template to add field to aggregate '%s'", ad->toChars()); | |
| 926 } | |
| 927 } | |
| 928 } | |
| 929 | |
| 930 #if DMDV2 | |
| 931 if ((storage_class & (STCref | STCparameter | STCforeach)) == STCref && | |
| 932 ident != Id::This) | |
| 933 { | |
| 934 error("only parameters or foreach declarations can be ref"); | |
| 935 } | |
| 936 #endif | |
| 937 | |
| 938 if (type->isscope() && !noscope) | |
| 939 { | |
| 940 if (storage_class & (STCfield | STCout | STCref | STCstatic) || !fd) | |
| 941 { | |
| 942 error("globals, statics, fields, ref and out parameters cannot be scope"); | |
| 943 } | |
| 944 | |
| 945 if (!(storage_class & STCscope)) | |
| 946 { | |
| 947 if (!(storage_class & STCparameter) && ident != Id::withSym) | |
| 948 error("reference to scope class must be scope"); | |
| 949 } | |
| 950 } | |
| 951 | |
| 952 enum TOK op = TOKconstruct; | |
| 953 if (!init && !sc->inunion && !isStatic() && !isConst() && fd && | |
| 954 !(storage_class & (STCfield | STCin | STCforeach)) && | |
| 955 type->size() != 0) | |
| 956 { | |
| 957 // Provide a default initializer | |
| 958 //printf("Providing default initializer for '%s'\n", toChars()); | |
| 959 if (type->ty == Tstruct && | |
| 960 ((TypeStruct *)type)->sym->zeroInit == 1) | |
| 961 { /* If a struct is all zeros, as a special case | |
| 962 * set it's initializer to the integer 0. | |
| 963 * In AssignExp::toElem(), we check for this and issue | |
| 964 * a memset() to initialize the struct. | |
| 965 * Must do same check in interpreter. | |
| 966 */ | |
| 967 Expression *e = new IntegerExp(loc, 0, Type::tint32); | |
| 968 Expression *e1; | |
| 969 e1 = new VarExp(loc, this); | |
| 970 e = new AssignExp(loc, e1, e); | |
| 971 e->op = TOKconstruct; | |
| 972 e->type = e1->type; // don't type check this, it would fail | |
| 973 init = new ExpInitializer(loc, e); | |
| 974 return; | |
| 975 } | |
| 976 else if (type->ty == Ttypedef) | |
| 977 { TypeTypedef *td = (TypeTypedef *)type; | |
| 978 if (td->sym->init) | |
| 979 { init = td->sym->init; | |
| 980 ExpInitializer *ie = init->isExpInitializer(); | |
| 981 if (ie) | |
| 982 // Make copy so we can modify it | |
| 983 init = new ExpInitializer(ie->loc, ie->exp); | |
| 984 } | |
| 985 else | |
| 986 init = getExpInitializer(); | |
| 987 } | |
| 988 else | |
| 989 { | |
| 990 init = getExpInitializer(); | |
| 991 } | |
| 992 // Default initializer is always a blit | |
| 993 op = TOKblit; | |
| 994 } | |
| 995 | |
| 996 if (init) | |
| 997 { | |
| 998 sc = sc->push(); | |
| 999 sc->stc &= ~(STC_TYPECTOR | STCpure | STCnothrow | STCref); | |
| 1000 | |
| 1001 ArrayInitializer *ai = init->isArrayInitializer(); | |
| 1002 if (ai && tb->ty == Taarray) | |
| 1003 { | |
| 1004 init = ai->toAssocArrayInitializer(); | |
| 1005 } | |
| 1006 | |
| 1007 StructInitializer *si = init->isStructInitializer(); | |
| 1008 ExpInitializer *ei = init->isExpInitializer(); | |
| 1009 | |
| 1010 // See if initializer is a NewExp that can be allocated on the stack | |
| 1011 if (ei && isScope() && ei->exp->op == TOKnew) | |
| 1012 { NewExp *ne = (NewExp *)ei->exp; | |
| 1013 if (!(ne->newargs && ne->newargs->dim)) | |
| 1014 { ne->onstack = 1; | |
| 1015 onstack = 1; | |
| 1016 if (type->isBaseOf(ne->newtype->semantic(loc, sc), NULL)) | |
| 1017 onstack = 2; | |
| 1018 } | |
| 1019 } | |
| 1020 | |
| 1021 // If inside function, there is no semantic3() call | |
| 1022 if (sc->func) | |
| 1023 { | |
| 1024 // If local variable, use AssignExp to handle all the various | |
| 1025 // possibilities. | |
| 1026 if (fd && !isStatic() && !isConst() && !init->isVoidInitializer()) | |
| 1027 { | |
| 1028 //printf("fd = '%s', var = '%s'\n", fd->toChars(), toChars()); | |
| 1029 if (!ei) | |
| 1030 { | |
| 1031 Expression *e = init->toExpression(); | |
| 1032 if (!e) | |
| 1033 { | |
| 1034 init = init->semantic(sc, type); | |
| 1035 e = init->toExpression(); | |
| 1036 if (!e) | |
| 1037 { error("is not a static and cannot have static initializer"); | |
| 1038 return; | |
| 1039 } | |
| 1040 } | |
| 1041 ei = new ExpInitializer(init->loc, e); | |
| 1042 init = ei; | |
| 1043 } | |
| 1044 | |
| 1045 Expression *e1 = new VarExp(loc, this); | |
| 1046 | |
| 1047 Type *t = type->toBasetype(); | |
| 1048 if (t->ty == Tsarray && !(storage_class & (STCref | STCout))) | |
| 1049 { | |
| 1050 ei->exp = ei->exp->semantic(sc); | |
| 1051 if (!ei->exp->implicitConvTo(type)) | |
| 1052 { | |
| 1053 int dim = ((TypeSArray *)t)->dim->toInteger(); | |
| 1054 // If multidimensional static array, treat as one large array | |
| 1055 while (1) | |
| 1056 { | |
| 1057 t = t->nextOf()->toBasetype(); | |
| 1058 if (t->ty != Tsarray) | |
| 1059 break; | |
| 1060 dim *= ((TypeSArray *)t)->dim->toInteger(); | |
| 1061 e1->type = new TypeSArray(t->nextOf(), new IntegerExp(0, dim, Type::tindex)); | |
| 1062 } | |
| 1063 } | |
| 1064 e1 = new SliceExp(loc, e1, NULL, NULL); | |
| 1065 } | |
| 1066 else if (t->ty == Tstruct) | |
| 1067 { | |
| 1068 ei->exp = ei->exp->semantic(sc); | |
| 1069 ei->exp = resolveProperties(sc, ei->exp); | |
| 1070 StructDeclaration *sd = ((TypeStruct *)t)->sym; | |
| 1071 #if DMDV2 | |
| 1072 /* Look to see if initializer is a call to the constructor | |
| 1073 */ | |
| 1074 if (sd->ctor && // there are constructors | |
| 1075 ei->exp->type->ty == Tstruct && // rvalue is the same struct | |
| 1076 ((TypeStruct *)ei->exp->type)->sym == sd && | |
| 1077 ei->exp->op == TOKstar) | |
| 1078 { | |
| 1079 /* Look for form of constructor call which is: | |
| 1080 * *__ctmp.ctor(arguments...) | |
| 1081 */ | |
| 1082 PtrExp *pe = (PtrExp *)ei->exp; | |
| 1083 if (pe->e1->op == TOKcall) | |
| 1084 { CallExp *ce = (CallExp *)pe->e1; | |
| 1085 if (ce->e1->op == TOKdotvar) | |
| 1086 { DotVarExp *dve = (DotVarExp *)ce->e1; | |
| 1087 if (dve->var->isCtorDeclaration()) | |
| 1088 { /* It's a constructor call, currently constructing | |
| 1089 * a temporary __ctmp. | |
| 1090 */ | |
| 1091 /* Before calling the constructor, initialize | |
| 1092 * variable with a bit copy of the default | |
| 1093 * initializer | |
| 1094 */ | |
| 1095 Expression *e = new AssignExp(loc, new VarExp(loc, this), t->defaultInit(loc)); | |
| 1096 e->op = TOKblit; | |
| 1097 e->type = t; | |
| 1098 ei->exp = new CommaExp(loc, e, ei->exp); | |
| 1099 | |
| 1100 /* Replace __ctmp being constructed with e1 | |
| 1101 */ | |
| 1102 dve->e1 = e1; | |
| 1103 return; | |
| 1104 } | |
| 1105 } | |
| 1106 } | |
| 1107 } | |
| 1108 #endif | |
| 1109 if (!ei->exp->implicitConvTo(type)) | |
| 1110 { | |
| 1111 /* Look for opCall | |
| 1112 * See bugzilla 2702 for more discussion | |
| 1113 */ | |
| 1114 Type *ti = ei->exp->type->toBasetype(); | |
| 1115 // Don't cast away invariant or mutability in initializer | |
| 1116 if (search_function(sd, Id::call) && | |
| 1117 /* Initializing with the same type is done differently | |
| 1118 */ | |
| 1119 !(ti->ty == Tstruct && t->toDsymbol(sc) == ti->toDsymbol(sc))) | |
| 1120 { // Rewrite as e1.call(arguments) | |
| 1121 Expression * eCall = new DotIdExp(loc, e1, Id::call); | |
| 1122 ei->exp = new CallExp(loc, eCall, ei->exp); | |
| 1123 } | |
| 1124 } | |
| 1125 } | |
| 1126 ei->exp = new AssignExp(loc, e1, ei->exp); | |
| 1127 ei->exp->op = TOKconstruct; | |
| 1128 canassign++; | |
| 1129 ei->exp = ei->exp->semantic(sc); | |
| 1130 canassign--; | |
| 1131 ei->exp->optimize(WANTvalue); | |
| 1132 } | |
| 1133 else | |
| 1134 { | |
| 1135 init = init->semantic(sc, type); | |
| 1136 if (fd && isConst() && !isStatic()) | |
| 1137 { // Make it static | |
| 1138 storage_class |= STCstatic; | |
| 1139 } | |
| 1140 } | |
| 1141 } | |
| 1142 else if (isConst() || isFinal() || | |
| 1143 parent->isAggregateDeclaration()) | |
| 1144 { | |
| 1145 /* Because we may need the results of a const declaration in a | |
| 1146 * subsequent type, such as an array dimension, before semantic2() | |
| 1147 * gets ordinarily run, try to run semantic2() now. | |
| 1148 * Ignore failure. | |
| 1149 */ | |
| 1150 | |
| 1151 if (!global.errors && !inferred) | |
| 1152 { | |
| 1153 unsigned errors = global.errors; | |
| 1154 global.gag++; | |
| 1155 //printf("+gag\n"); | |
| 1156 Expression *e; | |
| 1157 Initializer *i2 = init; | |
| 1158 inuse++; | |
| 1159 if (ei) | |
| 1160 { | |
| 1161 e = ei->exp->syntaxCopy(); | |
| 1162 e = e->semantic(sc); | |
| 1163 e = e->implicitCastTo(sc, type); | |
| 1164 } | |
| 1165 else if (si || ai) | |
| 1166 { i2 = init->syntaxCopy(); | |
| 1167 i2 = i2->semantic(sc, type); | |
| 1168 } | |
| 1169 inuse--; | |
| 1170 global.gag--; | |
| 1171 //printf("-gag\n"); | |
| 1172 if (errors != global.errors) // if errors happened | |
| 1173 { | |
| 1174 if (global.gag == 0) | |
| 1175 global.errors = errors; // act as if nothing happened | |
| 1176 #if DMDV2 | |
| 1177 /* Save scope for later use, to try again | |
| 1178 */ | |
| 1179 scope = new Scope(*sc); | |
| 1180 scope->setNoFree(); | |
| 1181 #endif | |
| 1182 } | |
| 1183 else if (ei) | |
| 1184 { | |
| 1185 e = e->optimize(WANTvalue | WANTinterpret); | |
| 1186 if (e->op == TOKint64 || e->op == TOKstring || e->op == TOKfloat64) | |
| 1187 { | |
| 1188 ei->exp = e; // no errors, keep result | |
| 1189 } | |
| 1190 #if DMDV2 | |
| 1191 else | |
| 1192 { | |
| 1193 /* Save scope for later use, to try again | |
| 1194 */ | |
| 1195 scope = new Scope(*sc); | |
| 1196 scope->setNoFree(); | |
| 1197 } | |
| 1198 #endif | |
| 1199 } | |
| 1200 else | |
| 1201 init = i2; // no errors, keep result | |
| 1202 } | |
| 1203 } | |
| 1204 sc = sc->pop(); | |
| 1205 } | |
| 1206 } | |
| 1207 | |
| 1208 ExpInitializer *VarDeclaration::getExpInitializer() | |
| 1209 { | |
| 1210 ExpInitializer *ei; | |
| 1211 | |
| 1212 if (init) | |
| 1213 ei = init->isExpInitializer(); | |
| 1214 else | |
| 1215 { | |
| 1216 Expression *e = type->defaultInit(loc); | |
| 1217 if (e) | |
| 1218 ei = new ExpInitializer(loc, e); | |
| 1219 else | |
| 1220 ei = NULL; | |
| 1221 } | |
| 1222 return ei; | |
| 1223 } | |
| 1224 | |
| 1225 void VarDeclaration::semantic2(Scope *sc) | |
| 1226 { | |
| 1227 //printf("VarDeclaration::semantic2('%s')\n", toChars()); | |
| 1228 if (init && !toParent()->isFuncDeclaration()) | |
| 1229 { inuse++; | |
| 1230 #if 0 | |
| 1231 ExpInitializer *ei = init->isExpInitializer(); | |
| 1232 if (ei) | |
| 1233 { | |
| 1234 ei->exp->dump(0); | |
| 1235 printf("type = %p\n", ei->exp->type); | |
| 1236 } | |
| 1237 #endif | |
| 1238 init = init->semantic(sc, type); | |
| 1239 inuse--; | |
| 1240 } | |
| 1241 } | |
| 1242 | |
| 1243 void VarDeclaration::semantic3(Scope *sc) | |
| 1244 { | |
| 1245 // LDC | |
| 1246 if (!global.params.useAvailableExternally) | |
| 1247 availableExternally = false; | |
| 1248 | |
| 1249 // Preserve call chain | |
| 1250 Declaration::semantic3(sc); | |
| 1251 } | |
| 1252 | |
| 1253 const char *VarDeclaration::kind() | |
| 1254 { | |
| 1255 return "variable"; | |
| 1256 } | |
| 1257 | |
| 1258 Dsymbol *VarDeclaration::toAlias() | |
| 1259 { | |
| 1260 //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym); | |
| 1261 assert(this != aliassym); | |
| 1262 Dsymbol *s = aliassym ? aliassym->toAlias() : this; | |
| 1263 return s; | |
| 1264 } | |
| 1265 | |
| 1266 void VarDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1267 { | |
| 1268 StorageClassDeclaration::stcToCBuffer(buf, storage_class); | |
| 1269 | |
| 1270 /* If changing, be sure and fix CompoundDeclarationStatement::toCBuffer() | |
| 1271 * too. | |
| 1272 */ | |
| 1273 if (type) | |
| 1274 type->toCBuffer(buf, ident, hgs); | |
| 1275 else | |
| 1276 buf->writestring(ident->toChars()); | |
| 1277 if (init) | |
| 1278 { buf->writestring(" = "); | |
| 1279 #if DMDV2 | |
| 1280 ExpInitializer *ie = init->isExpInitializer(); | |
| 1281 if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit)) | |
| 1282 ((AssignExp *)ie->exp)->e2->toCBuffer(buf, hgs); | |
| 1283 else | |
| 1284 #endif | |
| 1285 init->toCBuffer(buf, hgs); | |
| 1286 } | |
| 1287 buf->writeByte(';'); | |
| 1288 buf->writenl(); | |
| 1289 } | |
| 1290 | |
| 1291 int VarDeclaration::needThis() | |
| 1292 { | |
| 1293 //printf("VarDeclaration::needThis(%s, x%x)\n", toChars(), storage_class); | |
| 1294 return storage_class & STCfield; | |
| 1295 } | |
| 1296 | |
| 1297 int VarDeclaration::isImportedSymbol() | |
| 1298 { | |
| 1299 if (protection == PROTexport && !init && (isStatic() || isConst() || parent->isModule())) | |
| 1300 return TRUE; | |
| 1301 return FALSE; | |
| 1302 } | |
| 1303 | |
| 1304 void VarDeclaration::checkCtorConstInit() | |
| 1305 { | |
| 1306 if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield)) | |
| 1307 error("missing initializer in static constructor for const variable"); | |
| 1308 } | |
| 1309 | |
| 1310 /************************************ | |
| 1311 * Check to see if this variable is actually in an enclosing function | |
| 1312 * rather than the current one. | |
| 1313 */ | |
| 1314 | |
| 1315 void VarDeclaration::checkNestedReference(Scope *sc, Loc loc) | |
| 1316 { | |
| 1317 //printf("VarDeclaration::checkNestedReference() %s\n", toChars()); | |
| 1318 if (parent && !isDataseg() && parent != sc->parent) | |
| 1319 { | |
| 1320 // The function that this variable is in | |
| 1321 FuncDeclaration *fdv = toParent()->isFuncDeclaration(); | |
| 1322 // The current function | |
| 1323 FuncDeclaration *fdthis = sc->parent->isFuncDeclaration(); | |
| 1324 | |
| 1325 if (fdv && fdthis) | |
| 1326 { | |
| 1327 if (loc.filename) | |
| 1328 fdthis->getLevel(loc, fdv); | |
| 1329 nestedref = 1; | |
| 1330 fdv->nestedFrameRef = 1; | |
| 1331 #if IN_LLVM | |
| 1332 #if DMDV1 | |
| 1333 fdv->nestedVars.insert(this); | |
| 1334 #endif | |
| 1335 #endif | |
| 1336 //printf("var %s in function %s is nested ref\n", toChars(), fdv->toChars()); | |
| 1337 } | |
| 1338 } | |
| 1339 } | |
| 1340 | |
| 1341 /******************************* | |
| 1342 * Does symbol go into data segment? | |
| 1343 * Includes extern variables. | |
| 1344 */ | |
| 1345 | |
| 1346 int VarDeclaration::isDataseg() | |
| 1347 { | |
| 1348 #if 0 | |
| 1349 printf("VarDeclaration::isDataseg(%p, '%s')\n", this, toChars()); | |
|
1621
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1350 printf("%llx, %p, %p\n", storage_class & (STCstatic | STCconst), parent->isModule(), parent->isTemplateInstance()); |
| 1587 | 1351 printf("parent = '%s'\n", parent->toChars()); |
| 1352 #endif | |
| 1353 Dsymbol *parent = this->toParent(); | |
| 1354 if (!parent && !(storage_class & (STCstatic | STCconst))) | |
| 1355 { error("forward referenced"); | |
| 1356 type = Type::terror; | |
| 1357 return 0; | |
| 1358 } | |
| 1359 return (storage_class & (STCstatic | STCconst) || | |
| 1360 parent->isModule() || | |
| 1361 parent->isTemplateInstance()); | |
| 1362 } | |
| 1363 | |
| 1364 /************************************ | |
| 1365 * Does symbol go into thread local storage? | |
| 1366 */ | |
| 1367 | |
| 1368 int VarDeclaration::isThreadlocal() | |
| 1369 { | |
| 1370 return 0; | |
| 1371 } | |
| 1372 | |
|
1621
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1373 /******************************************** |
|
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1374 * Can variable be read and written by CTFE? |
|
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1375 */ |
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1376 |
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1377 int VarDeclaration::isCTFE() |
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1378 { |
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1379 //printf("VarDeclaration::isCTFE(%p, '%s')\n", this, toChars()); |
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1380 //printf("%llx\n", storage_class); |
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1381 return (storage_class & STCctfe) || !isDataseg(); |
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1382 } |
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1383 |
| 1587 | 1384 int VarDeclaration::hasPointers() |
| 1385 { | |
| 1386 //printf("VarDeclaration::hasPointers() %s, ty = %d\n", toChars(), type->ty); | |
| 1387 return (!isDataseg() && type->hasPointers()); | |
| 1388 } | |
| 1389 | |
| 1390 int VarDeclaration::isSameAsInitializer() | |
| 1391 { | |
| 1392 if (init && init->isExpInitializer() && | |
| 1393 init->isExpInitializer()->exp->op == TOKstructliteral) | |
| 1394 return 0; | |
| 1395 return isConst(); | |
| 1396 } | |
| 1397 | |
| 1398 /****************************************** | |
| 1399 * If a variable has an scope destructor call, return call for it. | |
| 1400 * Otherwise, return NULL. | |
| 1401 */ | |
| 1402 | |
| 1403 Expression *VarDeclaration::callScopeDtor(Scope *sc) | |
| 1404 { Expression *e = NULL; | |
| 1405 | |
| 1406 //printf("VarDeclaration::callScopeDtor() %s\n", toChars()); | |
| 1407 if (storage_class & STCscope && !noscope) | |
| 1408 { | |
| 1409 for (ClassDeclaration *cd = type->isClassHandle(); | |
| 1410 cd; | |
| 1411 cd = cd->baseClass) | |
| 1412 { | |
| 1413 /* We can do better if there's a way with onstack | |
| 1414 * classes to determine if there's no way the monitor | |
| 1415 * could be set. | |
| 1416 */ | |
| 1417 //if (cd->isInterfaceDeclaration()) | |
| 1418 //error("interface %s cannot be scope", cd->toChars()); | |
| 1419 if (1 || onstack || cd->dtors.dim) // if any destructors | |
| 1420 { | |
| 1421 // delete this; | |
| 1422 Expression *ec; | |
| 1423 | |
| 1424 ec = new VarExp(loc, this); | |
| 1425 e = new DeleteExp(loc, ec); | |
| 1426 e->type = Type::tvoid; | |
| 1427 break; | |
| 1428 } | |
| 1429 } | |
| 1430 } | |
| 1431 return e; | |
| 1432 } | |
| 1433 | |
| 1434 | |
| 1435 /********************************* ClassInfoDeclaration ****************************/ | |
| 1436 | |
| 1437 ClassInfoDeclaration::ClassInfoDeclaration(ClassDeclaration *cd) | |
| 1438 : VarDeclaration(0, ClassDeclaration::classinfo->type, cd->ident, NULL) | |
| 1439 { | |
| 1440 this->cd = cd; | |
| 1441 storage_class = STCstatic; | |
| 1442 } | |
| 1443 | |
| 1444 Dsymbol *ClassInfoDeclaration::syntaxCopy(Dsymbol *s) | |
| 1445 { | |
| 1446 assert(0); // should never be produced by syntax | |
| 1447 return NULL; | |
| 1448 } | |
| 1449 | |
| 1450 void ClassInfoDeclaration::semantic(Scope *sc) | |
| 1451 { | |
| 1452 } | |
| 1453 | |
| 1454 /********************************* ModuleInfoDeclaration ****************************/ | |
| 1455 | |
| 1456 ModuleInfoDeclaration::ModuleInfoDeclaration(Module *mod) | |
| 1457 : VarDeclaration(0, Module::moduleinfo->type, mod->ident, NULL) | |
| 1458 { | |
| 1459 this->mod = mod; | |
| 1460 storage_class = STCstatic; | |
| 1461 } | |
| 1462 | |
| 1463 Dsymbol *ModuleInfoDeclaration::syntaxCopy(Dsymbol *s) | |
| 1464 { | |
| 1465 assert(0); // should never be produced by syntax | |
| 1466 return NULL; | |
| 1467 } | |
| 1468 | |
| 1469 void ModuleInfoDeclaration::semantic(Scope *sc) | |
| 1470 { | |
| 1471 } | |
| 1472 | |
| 1473 /********************************* TypeInfoDeclaration ****************************/ | |
| 1474 | |
| 1475 TypeInfoDeclaration::TypeInfoDeclaration(Type *tinfo, int internal) | |
| 1476 : VarDeclaration(0, Type::typeinfo->type, tinfo->getTypeInfoIdent(internal), NULL) | |
| 1477 { | |
| 1478 this->tinfo = tinfo; | |
| 1479 storage_class = STCstatic; | |
| 1480 protection = PROTpublic; | |
| 1481 linkage = LINKc; | |
| 1482 } | |
| 1483 | |
| 1484 Dsymbol *TypeInfoDeclaration::syntaxCopy(Dsymbol *s) | |
| 1485 { | |
| 1486 assert(0); // should never be produced by syntax | |
| 1487 return NULL; | |
| 1488 } | |
| 1489 | |
| 1490 void TypeInfoDeclaration::semantic(Scope *sc) | |
| 1491 { | |
| 1492 assert(linkage == LINKc); | |
| 1493 // LDC | |
| 1494 if (!global.params.useAvailableExternally) | |
| 1495 availableExternally = false; | |
| 1496 } | |
| 1497 | |
| 1498 /***************************** TypeInfoConstDeclaration **********************/ | |
| 1499 | |
| 1500 #if DMDV2 | |
| 1501 TypeInfoConstDeclaration::TypeInfoConstDeclaration(Type *tinfo) | |
| 1502 : TypeInfoDeclaration(tinfo, 0) | |
| 1503 { | |
| 1504 } | |
| 1505 #endif | |
| 1506 | |
| 1507 /***************************** TypeInfoInvariantDeclaration **********************/ | |
| 1508 | |
| 1509 #if DMDV2 | |
| 1510 TypeInfoInvariantDeclaration::TypeInfoInvariantDeclaration(Type *tinfo) | |
| 1511 : TypeInfoDeclaration(tinfo, 0) | |
| 1512 { | |
| 1513 } | |
| 1514 #endif | |
| 1515 | |
| 1516 /***************************** TypeInfoSharedDeclaration **********************/ | |
| 1517 | |
| 1518 #if DMDV2 | |
| 1519 TypeInfoSharedDeclaration::TypeInfoSharedDeclaration(Type *tinfo) | |
| 1520 : TypeInfoDeclaration(tinfo, 0) | |
| 1521 { | |
| 1522 } | |
| 1523 #endif | |
| 1524 | |
| 1525 /***************************** TypeInfoStructDeclaration **********************/ | |
| 1526 | |
| 1527 TypeInfoStructDeclaration::TypeInfoStructDeclaration(Type *tinfo) | |
| 1528 : TypeInfoDeclaration(tinfo, 0) | |
| 1529 { | |
| 1530 } | |
| 1531 | |
| 1532 /***************************** TypeInfoClassDeclaration ***********************/ | |
| 1533 | |
| 1534 TypeInfoClassDeclaration::TypeInfoClassDeclaration(Type *tinfo) | |
| 1535 : TypeInfoDeclaration(tinfo, 0) | |
| 1536 { | |
| 1537 } | |
| 1538 | |
| 1539 /***************************** TypeInfoInterfaceDeclaration *******************/ | |
| 1540 | |
| 1541 TypeInfoInterfaceDeclaration::TypeInfoInterfaceDeclaration(Type *tinfo) | |
| 1542 : TypeInfoDeclaration(tinfo, 0) | |
| 1543 { | |
| 1544 } | |
| 1545 | |
| 1546 /***************************** TypeInfoTypedefDeclaration *********************/ | |
| 1547 | |
| 1548 TypeInfoTypedefDeclaration::TypeInfoTypedefDeclaration(Type *tinfo) | |
| 1549 : TypeInfoDeclaration(tinfo, 0) | |
| 1550 { | |
| 1551 } | |
| 1552 | |
| 1553 /***************************** TypeInfoPointerDeclaration *********************/ | |
| 1554 | |
| 1555 TypeInfoPointerDeclaration::TypeInfoPointerDeclaration(Type *tinfo) | |
| 1556 : TypeInfoDeclaration(tinfo, 0) | |
| 1557 { | |
| 1558 } | |
| 1559 | |
| 1560 /***************************** TypeInfoArrayDeclaration ***********************/ | |
| 1561 | |
| 1562 TypeInfoArrayDeclaration::TypeInfoArrayDeclaration(Type *tinfo) | |
| 1563 : TypeInfoDeclaration(tinfo, 0) | |
| 1564 { | |
| 1565 } | |
| 1566 | |
| 1567 /***************************** TypeInfoStaticArrayDeclaration *****************/ | |
| 1568 | |
| 1569 TypeInfoStaticArrayDeclaration::TypeInfoStaticArrayDeclaration(Type *tinfo) | |
| 1570 : TypeInfoDeclaration(tinfo, 0) | |
| 1571 { | |
| 1572 } | |
| 1573 | |
| 1574 /***************************** TypeInfoAssociativeArrayDeclaration ************/ | |
| 1575 | |
| 1576 TypeInfoAssociativeArrayDeclaration::TypeInfoAssociativeArrayDeclaration(Type *tinfo) | |
| 1577 : TypeInfoDeclaration(tinfo, 0) | |
| 1578 { | |
| 1579 } | |
| 1580 | |
| 1581 /***************************** TypeInfoEnumDeclaration ***********************/ | |
| 1582 | |
| 1583 TypeInfoEnumDeclaration::TypeInfoEnumDeclaration(Type *tinfo) | |
| 1584 : TypeInfoDeclaration(tinfo, 0) | |
| 1585 { | |
| 1586 } | |
| 1587 | |
| 1588 /***************************** TypeInfoFunctionDeclaration ********************/ | |
| 1589 | |
| 1590 TypeInfoFunctionDeclaration::TypeInfoFunctionDeclaration(Type *tinfo) | |
| 1591 : TypeInfoDeclaration(tinfo, 0) | |
| 1592 { | |
| 1593 } | |
| 1594 | |
| 1595 /***************************** TypeInfoDelegateDeclaration ********************/ | |
| 1596 | |
| 1597 TypeInfoDelegateDeclaration::TypeInfoDelegateDeclaration(Type *tinfo) | |
| 1598 : TypeInfoDeclaration(tinfo, 0) | |
| 1599 { | |
| 1600 } | |
| 1601 | |
| 1602 /***************************** TypeInfoTupleDeclaration **********************/ | |
| 1603 | |
| 1604 TypeInfoTupleDeclaration::TypeInfoTupleDeclaration(Type *tinfo) | |
| 1605 : TypeInfoDeclaration(tinfo, 0) | |
| 1606 { | |
| 1607 } | |
| 1608 | |
| 1609 /********************************* ThisDeclaration ****************************/ | |
| 1610 | |
| 1611 // For the "this" parameter to member functions | |
| 1612 | |
| 1613 ThisDeclaration::ThisDeclaration(Loc loc, Type *t) | |
| 1614 : VarDeclaration(loc, t, Id::This, NULL) | |
| 1615 { | |
| 1616 noscope = 1; | |
| 1617 } | |
| 1618 | |
| 1619 Dsymbol *ThisDeclaration::syntaxCopy(Dsymbol *s) | |
| 1620 { | |
| 1621 assert(0); // should never be produced by syntax | |
| 1622 return NULL; | |
| 1623 } | |
| 1624 | |
| 1625 /********************** StaticStructInitDeclaration ***************************/ | |
| 1626 | |
| 1627 StaticStructInitDeclaration::StaticStructInitDeclaration(Loc loc, StructDeclaration *dsym) | |
| 1628 : Declaration(new Identifier("", TOKidentifier)) | |
| 1629 { | |
| 1630 this->loc = loc; | |
| 1631 this->dsym = dsym; | |
| 1632 storage_class |= STCconst; | |
| 1633 } |