Mercurial > projects > ldc
annotate dmd/func.c @ 378:d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
declatation.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Tue, 22 Jul 2008 19:24:40 +0200 |
| parents | aaade6ded589 |
| children | 44f08170f4ef |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2008 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 "mars.h" | |
| 15 #include "init.h" | |
| 16 #include "declaration.h" | |
| 17 #include "attrib.h" | |
| 18 #include "expression.h" | |
| 19 #include "scope.h" | |
| 20 #include "mtype.h" | |
| 21 #include "aggregate.h" | |
| 22 #include "identifier.h" | |
| 23 #include "id.h" | |
| 24 #include "module.h" | |
| 25 #include "statement.h" | |
| 26 #include "template.h" | |
| 27 #include "hdrgen.h" | |
| 28 | |
| 29 #ifdef IN_GCC | |
| 30 #include "d-dmd-gcc.h" | |
| 31 #endif | |
| 32 | |
| 33 /********************************* FuncDeclaration ****************************/ | |
| 34 | |
| 35 FuncDeclaration::FuncDeclaration(Loc loc, Loc endloc, Identifier *id, enum STC storage_class, Type *type) | |
| 36 : Declaration(id) | |
| 37 { | |
| 38 //printf("FuncDeclaration(id = '%s', type = %p)\n", id->toChars(), type); | |
| 39 this->storage_class = storage_class; | |
| 40 this->type = type; | |
| 41 this->loc = loc; | |
| 42 this->endloc = endloc; | |
| 43 fthrows = NULL; | |
| 44 frequire = NULL; | |
| 45 outId = NULL; | |
| 46 vresult = NULL; | |
| 47 returnLabel = NULL; | |
| 48 fensure = NULL; | |
| 49 fbody = NULL; | |
| 50 localsymtab = NULL; | |
| 51 vthis = NULL; | |
| 52 v_arguments = NULL; | |
| 53 #if IN_GCC | |
| 54 v_argptr = NULL; | |
| 55 #endif | |
| 56 parameters = NULL; | |
| 57 labtab = NULL; | |
| 58 overnext = NULL; | |
| 59 vtblIndex = -1; | |
| 60 hasReturnExp = 0; | |
| 61 naked = 0; | |
| 62 inlineStatus = ILSuninitialized; | |
| 63 inlineNest = 0; | |
| 64 inlineAsm = 0; | |
| 65 cantInterpret = 0; | |
| 66 semanticRun = 0; | |
| 67 nestedFrameRef = 0; | |
| 68 fes = NULL; | |
| 69 introducing = 0; | |
| 70 tintro = NULL; | |
| 71 inferRetType = (type && type->nextOf() == NULL); | |
| 72 scope = NULL; | |
| 73 hasReturnExp = 0; | |
| 74 nrvo_can = 1; | |
| 75 nrvo_var = NULL; | |
| 76 shidden = NULL; | |
| 77 } | |
| 78 | |
| 79 Dsymbol *FuncDeclaration::syntaxCopy(Dsymbol *s) | |
| 80 { | |
| 81 FuncDeclaration *f; | |
| 82 | |
| 83 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 84 if (s) | |
| 85 f = (FuncDeclaration *)s; | |
| 86 else | |
| 87 f = new FuncDeclaration(loc, endloc, ident, (enum STC) storage_class, type->syntaxCopy()); | |
| 88 f->outId = outId; | |
| 89 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 90 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 91 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 92 assert(!fthrows); // deprecated | |
| 93 return f; | |
| 94 } | |
| 95 | |
| 96 | |
| 97 // Do the semantic analysis on the external interface to the function. | |
| 98 | |
| 99 void FuncDeclaration::semantic(Scope *sc) | |
| 100 { TypeFunction *f; | |
| 101 StructDeclaration *sd; | |
| 102 ClassDeclaration *cd; | |
| 103 InterfaceDeclaration *id; | |
| 336 | 104 Dsymbol *pd; |
| 159 | 105 |
| 106 #if 0 | |
| 107 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
| 108 if (isFuncLiteralDeclaration()) | |
| 109 printf("\tFuncLiteralDeclaration()\n"); | |
| 110 printf("sc->parent = %s\n", sc->parent->toChars()); | |
| 111 printf("type: %s\n", type->toChars()); | |
| 112 #endif | |
| 113 | |
| 114 if (type->nextOf()) | |
| 115 type = type->semantic(loc, sc); | |
| 116 //type->print(); | |
| 117 if (type->ty != Tfunction) | |
| 118 { | |
| 119 error("%s must be a function", toChars()); | |
| 120 return; | |
| 121 } | |
| 122 f = (TypeFunction *)(type); | |
| 123 size_t nparams = Argument::dim(f->parameters); | |
| 124 | |
| 125 linkage = sc->linkage; | |
| 126 // if (!parent) | |
| 127 { | |
| 128 //parent = sc->scopesym; | |
| 129 parent = sc->parent; | |
| 130 } | |
| 131 protection = sc->protection; | |
| 132 storage_class |= sc->stc; | |
| 133 //printf("function storage_class = x%x\n", storage_class); | |
| 134 Dsymbol *parent = toParent(); | |
| 135 | |
| 136 if (isConst() || isAuto() || isScope()) | |
| 137 error("functions cannot be const or auto"); | |
| 138 | |
| 139 if (isAbstract() && !isVirtual()) | |
| 140 error("non-virtual functions cannot be abstract"); | |
| 141 | |
| 142 if (isAbstract() && isFinal()) | |
| 143 error("cannot be both final and abstract"); | |
| 144 #if 0 | |
| 145 if (isAbstract() && fbody) | |
| 146 error("abstract functions cannot have bodies"); | |
| 147 #endif | |
| 148 | |
| 149 #if 0 | |
| 150 if (isStaticConstructor() || isStaticDestructor()) | |
| 151 { | |
| 152 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
| 153 error("static constructors / destructors must be static void"); | |
| 154 if (f->arguments && f->arguments->dim) | |
| 155 error("static constructors / destructors must have empty parameter list"); | |
| 156 // BUG: check for invalid storage classes | |
| 157 } | |
| 158 #endif | |
| 159 | |
| 160 #ifdef IN_GCC | |
| 161 AggregateDeclaration *ad; | |
| 162 | |
| 163 ad = parent->isAggregateDeclaration(); | |
| 164 if (ad) | |
| 165 ad->methods.push(this); | |
| 166 #endif | |
| 167 sd = parent->isStructDeclaration(); | |
| 168 if (sd) | |
| 169 { | |
| 170 // Verify no constructors, destructors, etc. | |
| 171 if (isCtorDeclaration() || | |
| 172 isDtorDeclaration() | |
| 173 //|| isInvariantDeclaration() | |
| 174 //|| isUnitTestDeclaration() | |
| 175 ) | |
| 176 { | |
| 177 error("special member functions not allowed for %ss", sd->kind()); | |
| 178 } | |
| 179 | |
| 180 #if 0 | |
| 181 if (!sd->inv) | |
| 182 sd->inv = isInvariantDeclaration(); | |
| 183 | |
| 184 if (!sd->aggNew) | |
| 185 sd->aggNew = isNewDeclaration(); | |
| 186 | |
| 187 if (isDelete()) | |
| 188 { | |
| 189 if (sd->aggDelete) | |
| 190 error("multiple delete's for struct %s", sd->toChars()); | |
| 191 sd->aggDelete = (DeleteDeclaration *)(this); | |
| 192 } | |
| 193 #endif | |
| 194 } | |
| 195 | |
| 196 id = parent->isInterfaceDeclaration(); | |
| 197 if (id) | |
| 198 { | |
| 199 storage_class |= STCabstract; | |
| 200 | |
| 201 if (isCtorDeclaration() || | |
| 202 isDtorDeclaration() || | |
| 203 isInvariantDeclaration() || | |
| 204 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 205 error("special function not allowed in interface %s", id->toChars()); | |
| 206 if (fbody) | |
| 207 error("function body is not abstract in interface %s", id->toChars()); | |
| 208 } | |
| 209 | |
| 336 | 210 /* Template member functions aren't virtual: |
| 211 * interface TestInterface { void tpl(T)(); } | |
| 212 * and so won't work in interfaces | |
| 213 */ | |
| 214 if ((pd = toParent()) != NULL && | |
| 215 pd->isTemplateInstance() && | |
| 216 (pd = toParent2()) != NULL && | |
| 217 (id = pd->isInterfaceDeclaration()) != NULL) | |
| 218 { | |
| 219 error("template member function not allowed in interface %s", id->toChars()); | |
| 220 } | |
| 221 | |
| 159 | 222 cd = parent->isClassDeclaration(); |
| 223 if (cd) | |
| 224 { int vi; | |
| 225 CtorDeclaration *ctor; | |
| 226 DtorDeclaration *dtor; | |
| 227 InvariantDeclaration *inv; | |
| 228 | |
| 229 if (isCtorDeclaration()) | |
| 230 { | |
| 231 // ctor = (CtorDeclaration *)this; | |
| 232 // if (!cd->ctor) | |
| 233 // cd->ctor = ctor; | |
| 234 return; | |
| 235 } | |
| 236 | |
| 237 #if 0 | |
| 238 dtor = isDtorDeclaration(); | |
| 239 if (dtor) | |
| 240 { | |
| 241 if (cd->dtor) | |
| 242 error("multiple destructors for class %s", cd->toChars()); | |
| 243 cd->dtor = dtor; | |
| 244 } | |
| 245 | |
| 246 inv = isInvariantDeclaration(); | |
| 247 if (inv) | |
| 248 { | |
| 249 cd->inv = inv; | |
| 250 } | |
| 251 | |
| 252 if (isNewDeclaration()) | |
| 253 { | |
| 254 if (!cd->aggNew) | |
| 255 cd->aggNew = (NewDeclaration *)(this); | |
| 256 } | |
| 257 | |
| 258 if (isDelete()) | |
| 259 { | |
| 260 if (cd->aggDelete) | |
| 261 error("multiple delete's for class %s", cd->toChars()); | |
| 262 cd->aggDelete = (DeleteDeclaration *)(this); | |
| 263 } | |
| 264 #endif | |
| 265 | |
| 266 if (storage_class & STCabstract) | |
| 267 cd->isabstract = 1; | |
| 268 | |
| 269 // if static function, do not put in vtbl[] | |
| 270 if (!isVirtual()) | |
| 271 { | |
| 272 //printf("\tnot virtual\n"); | |
| 273 goto Ldone; | |
| 274 } | |
| 275 | |
| 276 // Find index of existing function in vtbl[] to override | |
| 277 vi = findVtblIndex(&cd->vtbl, cd->baseClass ? cd->baseClass->vtbl.dim : 0); | |
| 278 switch (vi) | |
| 279 { | |
| 280 case -1: // didn't find one | |
| 281 // This is an 'introducing' function. | |
| 282 | |
| 283 // Verify this doesn't override previous final function | |
| 284 if (cd->baseClass) | |
| 285 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
| 286 if (s) | |
| 287 { | |
| 288 FuncDeclaration *f = s->isFuncDeclaration(); | |
| 289 f = f->overloadExactMatch(type); | |
| 290 if (f && f->isFinal() && f->prot() != PROTprivate) | |
| 291 error("cannot override final function %s", f->toPrettyChars()); | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 if (isFinal()) | |
| 296 { | |
| 297 cd->vtblFinal.push(this); | |
| 298 } | |
| 299 else | |
| 300 { | |
| 301 // Append to end of vtbl[] | |
| 302 //printf("\tintroducing function\n"); | |
| 303 introducing = 1; | |
| 304 vi = cd->vtbl.dim; | |
| 305 cd->vtbl.push(this); | |
| 306 vtblIndex = vi; | |
| 307 } | |
| 308 break; | |
| 309 | |
| 310 case -2: // can't determine because of fwd refs | |
| 311 cd->sizeok = 2; // can't finish due to forward reference | |
| 312 return; | |
| 313 | |
| 314 default: | |
| 315 { FuncDeclaration *fdv = (FuncDeclaration *)cd->vtbl.data[vi]; | |
| 316 // This function is covariant with fdv | |
| 317 if (fdv->isFinal()) | |
| 318 error("cannot override final function %s", fdv->toPrettyChars()); | |
| 319 | |
| 336 | 320 #if DMDV2 |
| 159 | 321 if (!isOverride() && global.params.warnings) |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
162
diff
changeset
|
322 warning("%s: overrides base class function %s, but is not marked with 'override'", locToChars() fdv->toPrettyChars()); |
| 159 | 323 #endif |
| 324 | |
| 325 if (fdv->toParent() == parent) | |
| 326 { | |
| 327 // If both are mixins, then error. | |
| 328 // If either is not, the one that is not overrides | |
| 329 // the other. | |
| 330 if (fdv->parent->isClassDeclaration()) | |
| 331 break; | |
| 332 if (!this->parent->isClassDeclaration() | |
| 333 #if !BREAKABI | |
| 334 && !isDtorDeclaration() | |
| 335 #endif | |
| 336 | 336 #if DMDV2 |
| 159 | 337 && !isPostBlitDeclaration() |
| 338 #endif | |
| 339 ) | |
| 340 error("multiple overrides of same function"); | |
| 341 } | |
| 342 cd->vtbl.data[vi] = (void *)this; | |
| 343 vtblIndex = vi; | |
| 344 | |
| 345 /* This works by whenever this function is called, | |
| 346 * it actually returns tintro, which gets dynamically | |
| 347 * cast to type. But we know that tintro is a base | |
| 348 * of type, so we could optimize it by not doing a | |
| 349 * dynamic cast, but just subtracting the isBaseOf() | |
| 350 * offset if the value is != null. | |
| 351 */ | |
| 352 | |
| 353 if (fdv->tintro) | |
| 354 tintro = fdv->tintro; | |
| 355 else if (!type->equals(fdv->type)) | |
| 356 { | |
| 357 /* Only need to have a tintro if the vptr | |
| 358 * offsets differ | |
| 359 */ | |
| 360 int offset; | |
| 361 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 362 { | |
| 363 tintro = fdv->type; | |
| 364 } | |
| 365 } | |
| 366 break; | |
| 367 } | |
| 368 } | |
| 369 | |
| 370 /* Go through all the interface bases. | |
| 371 * If this function is covariant with any members of those interface | |
| 372 * functions, set the tintro. | |
| 373 */ | |
| 374 for (int i = 0; i < cd->interfaces_dim; i++) | |
| 375 { | |
| 376 #if 1 | |
| 377 BaseClass *b = cd->interfaces[i]; | |
| 378 vi = findVtblIndex(&b->base->vtbl, b->base->vtbl.dim); | |
| 379 switch (vi) | |
| 380 { | |
| 381 case -1: | |
| 382 break; | |
| 383 | |
| 384 case -2: | |
| 385 cd->sizeok = 2; // can't finish due to forward reference | |
| 386 return; | |
| 387 | |
| 388 default: | |
| 389 { FuncDeclaration *fdv = (FuncDeclaration *)b->base->vtbl.data[vi]; | |
| 390 Type *ti = NULL; | |
| 391 | |
| 392 if (fdv->tintro) | |
| 393 ti = fdv->tintro; | |
| 394 else if (!type->equals(fdv->type)) | |
| 395 { | |
| 396 /* Only need to have a tintro if the vptr | |
| 397 * offsets differ | |
| 398 */ | |
| 399 int offset; | |
| 400 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 401 { | |
| 402 ti = fdv->type; | |
| 403 #if 0 | |
| 404 if (offset) | |
| 405 ti = fdv->type; | |
| 406 else if (type->nextOf()->ty == Tclass) | |
| 407 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 408 if (cdn && cdn->sizeok != 1) | |
| 409 ti = fdv->type; | |
| 410 } | |
| 411 #endif | |
| 412 } | |
| 413 } | |
| 414 if (ti) | |
| 415 { | |
| 416 if (tintro && !tintro->equals(ti)) | |
| 417 { | |
| 418 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 419 } | |
| 420 tintro = ti; | |
| 421 } | |
| 422 goto L2; | |
| 423 } | |
| 424 } | |
| 425 #else | |
| 426 BaseClass *b = cd->interfaces[i]; | |
| 427 for (vi = 0; vi < b->base->vtbl.dim; vi++) | |
| 428 { | |
| 429 Dsymbol *s = (Dsymbol *)b->base->vtbl.data[vi]; | |
| 430 //printf("interface %d vtbl[%d] %p %s\n", i, vi, s, s->toChars()); | |
| 431 FuncDeclaration *fdv = s->isFuncDeclaration(); | |
| 432 if (fdv && fdv->ident == ident) | |
| 433 { | |
| 434 int cov = type->covariant(fdv->type); | |
| 435 //printf("\tcov = %d\n", cov); | |
| 436 if (cov == 2) | |
| 437 { | |
| 438 //type->print(); | |
| 439 //fdv->type->print(); | |
| 440 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 441 error("of type %s overrides but is not covariant with %s of type %s", | |
| 442 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 443 } | |
| 444 if (cov == 1) | |
| 445 { Type *ti = NULL; | |
| 446 | |
| 447 if (fdv->tintro) | |
| 448 ti = fdv->tintro; | |
| 449 else if (!type->equals(fdv->type)) | |
| 450 { | |
| 451 /* Only need to have a tintro if the vptr | |
| 452 * offsets differ | |
| 453 */ | |
| 454 int offset; | |
| 455 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 456 { | |
| 457 ti = fdv->type; | |
| 458 #if 0 | |
| 459 if (offset) | |
| 460 ti = fdv->type; | |
| 461 else if (type->nextOf()->ty == Tclass) | |
| 462 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 463 if (cdn && cdn->sizeok != 1) | |
| 464 ti = fdv->type; | |
| 465 } | |
| 466 #endif | |
| 467 } | |
| 468 } | |
| 469 if (ti) | |
| 470 { | |
| 471 if (tintro && !tintro->equals(ti)) | |
| 472 { | |
| 473 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 474 } | |
| 475 tintro = ti; | |
| 476 } | |
| 477 goto L2; | |
| 478 } | |
| 479 if (cov == 3) | |
| 480 { | |
| 481 cd->sizeok = 2; // can't finish due to forward reference | |
| 482 return; | |
| 483 } | |
| 484 } | |
| 485 } | |
| 486 #endif | |
| 487 } | |
| 488 | |
| 489 if (introducing && isOverride()) | |
| 490 { | |
| 491 error("does not override any function"); | |
| 492 } | |
| 493 | |
| 494 L2: ; | |
| 495 } | |
| 496 else if (isOverride() && !parent->isTemplateInstance()) | |
| 497 error("override only applies to class member functions"); | |
| 498 | |
| 499 /* Do not allow template instances to add virtual functions | |
| 500 * to a class. | |
| 501 */ | |
| 502 if (isVirtual()) | |
| 503 { | |
| 504 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 505 if (ti) | |
| 506 { | |
| 507 // Take care of nested templates | |
| 508 while (1) | |
| 509 { | |
| 510 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 511 if (!ti2) | |
| 512 break; | |
| 513 ti = ti2; | |
| 514 } | |
| 515 | |
| 516 // If it's a member template | |
| 517 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
| 518 if (cd) | |
| 519 { | |
| 520 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
| 521 } | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 if (isMain()) | |
| 526 { | |
| 527 // Check parameters to see if they are either () or (char[][] args) | |
| 528 switch (nparams) | |
| 529 { | |
| 530 case 0: | |
| 531 break; | |
| 532 | |
| 533 case 1: | |
| 534 { | |
| 535 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 536 if (arg0->type->ty != Tarray || | |
| 537 arg0->type->nextOf()->ty != Tarray || | |
| 538 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
| 539 arg0->storageClass & (STCout | STCref | STClazy)) | |
| 540 goto Lmainerr; | |
| 541 break; | |
| 542 } | |
| 543 | |
| 544 default: | |
| 545 goto Lmainerr; | |
| 546 } | |
| 547 | |
| 548 if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
| 549 error("must return int or void, not %s", f->nextOf()->toChars()); | |
| 550 if (f->varargs) | |
| 551 { | |
| 552 Lmainerr: | |
| 553 error("parameters must be main() or main(char[][] args)"); | |
| 554 } | |
| 555 } | |
| 556 | |
| 557 if (ident == Id::assign && (sd || cd)) | |
| 558 { // Disallow identity assignment operator. | |
| 559 | |
| 560 // opAssign(...) | |
| 561 if (nparams == 0) | |
| 562 { if (f->varargs == 1) | |
| 563 goto Lassignerr; | |
| 564 } | |
| 565 else | |
| 566 { | |
| 567 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 568 Type *t0 = arg0->type->toBasetype(); | |
| 569 Type *tb = sd ? sd->type : cd->type; | |
| 570 if (arg0->type->implicitConvTo(tb) || | |
| 571 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
| 572 ) | |
| 573 { | |
| 574 if (nparams == 1) | |
| 575 goto Lassignerr; | |
| 576 Argument *arg1 = Argument::getNth(f->parameters, 1); | |
| 577 if (arg1->defaultArg) | |
| 578 goto Lassignerr; | |
| 579 } | |
| 580 } | |
| 581 } | |
| 582 | |
| 583 Ldone: | |
| 584 /* Save scope for possible later use (if we need the | |
| 585 * function internals) | |
| 586 */ | |
| 587 scope = new Scope(*sc); | |
| 588 scope->setNoFree(); | |
| 589 return; | |
| 590 | |
| 591 Lassignerr: | |
| 592 error("identity assignment operator overload is illegal"); | |
| 593 } | |
| 594 | |
| 595 void FuncDeclaration::semantic2(Scope *sc) | |
| 596 { | |
| 597 } | |
| 598 | |
| 599 // Do the semantic analysis on the internals of the function. | |
| 600 | |
| 601 void FuncDeclaration::semantic3(Scope *sc) | |
| 602 { TypeFunction *f; | |
| 603 AggregateDeclaration *ad; | |
| 604 VarDeclaration *argptr = NULL; | |
| 605 VarDeclaration *_arguments = NULL; | |
| 606 | |
| 607 if (!parent) | |
| 608 { | |
| 609 if (global.errors) | |
| 610 return; | |
| 611 //printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
| 612 assert(0); | |
| 613 } | |
| 614 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p, loc = %s)\n", parent->toChars(), toChars(), sc, loc.toChars()); | |
| 615 //fflush(stdout); | |
| 616 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 617 //printf("\tlinkage = %d\n", sc->linkage); | |
| 618 | |
| 619 //printf(" sc->incontract = %d\n", sc->incontract); | |
| 620 if (semanticRun) | |
| 621 return; | |
| 622 semanticRun = 1; | |
| 623 | |
| 624 if (!type || type->ty != Tfunction) | |
| 625 return; | |
| 626 f = (TypeFunction *)(type); | |
| 627 size_t nparams = Argument::dim(f->parameters); | |
| 628 | |
| 629 // Check the 'throws' clause | |
| 630 if (fthrows) | |
| 631 { int i; | |
| 632 | |
| 633 for (i = 0; i < fthrows->dim; i++) | |
| 634 { | |
| 635 Type *t = (Type *)fthrows->data[i]; | |
| 636 | |
| 637 t = t->semantic(loc, sc); | |
| 638 if (!t->isClassHandle()) | |
| 639 error("can only throw classes, not %s", t->toChars()); | |
| 640 } | |
| 641 } | |
| 642 | |
| 643 if (fbody || frequire) | |
| 644 { | |
| 645 /* Symbol table into which we place parameters and nested functions, | |
| 646 * solely to diagnose name collisions. | |
| 647 */ | |
| 648 localsymtab = new DsymbolTable(); | |
| 649 | |
| 650 // Establish function scope | |
| 651 ScopeDsymbol *ss = new ScopeDsymbol(); | |
| 652 ss->parent = sc->scopesym; | |
| 653 Scope *sc2 = sc->push(ss); | |
| 654 sc2->func = this; | |
| 655 sc2->parent = this; | |
| 656 sc2->callSuper = 0; | |
| 657 sc2->sbreak = NULL; | |
| 658 sc2->scontinue = NULL; | |
| 659 sc2->sw = NULL; | |
| 660 sc2->fes = fes; | |
| 661 sc2->linkage = LINKd; | |
| 662 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated | STCfinal); | |
| 663 sc2->protection = PROTpublic; | |
| 664 sc2->explicitProtection = 0; | |
| 665 sc2->structalign = 8; | |
| 666 sc2->incontract = 0; | |
| 667 sc2->tf = NULL; | |
| 668 sc2->noctor = 0; | |
| 669 | |
| 670 // Declare 'this' | |
| 671 ad = isThis(); | |
| 672 if (ad) | |
| 673 { VarDeclaration *v; | |
| 674 | |
| 675 if (isFuncLiteralDeclaration() && isNested()) | |
| 676 { | |
| 677 error("literals cannot be class members"); | |
| 678 return; | |
| 679 } | |
| 680 else | |
| 681 { | |
| 682 assert(!isNested()); // can't be both member and nested | |
| 683 assert(ad->handle); | |
| 684 v = new ThisDeclaration(ad->handle); | |
| 685 v->storage_class |= STCparameter | STCin; | |
| 686 v->semantic(sc2); | |
| 687 if (!sc2->insert(v)) | |
| 688 assert(0); | |
| 689 v->parent = this; | |
| 690 vthis = v; | |
| 691 } | |
| 692 } | |
| 693 else if (isNested()) | |
| 694 { | |
| 695 VarDeclaration *v; | |
| 696 | |
| 697 v = new ThisDeclaration(Type::tvoid->pointerTo()); | |
| 698 v->storage_class |= STCparameter | STCin; | |
| 699 v->semantic(sc2); | |
| 700 if (!sc2->insert(v)) | |
| 701 assert(0); | |
| 702 v->parent = this; | |
| 703 vthis = v; | |
| 704 } | |
| 705 | |
| 706 // Declare hidden variable _arguments[] and _argptr | |
| 707 if (f->varargs == 1) | |
| 708 { Type *t; | |
| 709 | |
| 710 if (f->linkage == LINKd) | |
| 711 { // Declare _arguments[] | |
| 712 #if BREAKABI | |
| 713 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
| 714 v_arguments->storage_class = STCparameter | STCin; | |
| 715 v_arguments->semantic(sc2); | |
| 716 sc2->insert(v_arguments); | |
| 717 v_arguments->parent = this; | |
| 718 | |
| 719 t = Type::typeinfo->type->arrayOf(); | |
| 720 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 721 _arguments->semantic(sc2); | |
| 722 sc2->insert(_arguments); | |
| 723 _arguments->parent = this; | |
| 724 #else | |
| 725 t = Type::typeinfo->type->arrayOf(); | |
| 726 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 727 v_arguments->storage_class = STCparameter | STCin; | |
| 728 v_arguments->semantic(sc2); | |
| 729 sc2->insert(v_arguments); | |
| 730 v_arguments->parent = this; | |
| 731 #endif | |
| 732 } | |
| 733 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
| 734 { // Declare _argptr | |
| 735 #if IN_GCC | |
| 736 t = d_gcc_builtin_va_list_d_type; | |
| 737 #else | |
| 738 t = Type::tvoid->pointerTo(); | |
| 739 #endif | |
| 740 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
| 741 argptr->semantic(sc2); | |
| 742 sc2->insert(argptr); | |
| 743 argptr->parent = this; | |
| 744 } | |
| 745 } | |
| 746 | |
| 747 // Propagate storage class from tuple parameters to their element-parameters. | |
| 748 if (f->parameters) | |
| 749 { | |
| 750 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 751 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 752 | |
| 753 if (arg->type->ty == Ttuple) | |
| 754 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 755 size_t dim = Argument::dim(t->arguments); | |
| 756 for (size_t j = 0; j < dim; j++) | |
| 757 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 758 narg->storageClass = arg->storageClass; | |
| 759 } | |
| 760 } | |
| 761 } | |
| 762 } | |
| 763 | |
| 764 // Declare all the function parameters as variables | |
| 765 if (nparams) | |
| 766 { /* parameters[] has all the tuples removed, as the back end | |
| 767 * doesn't know about tuples | |
| 768 */ | |
| 769 parameters = new Dsymbols(); | |
| 770 parameters->reserve(nparams); | |
| 771 for (size_t i = 0; i < nparams; i++) | |
| 772 { | |
| 773 Argument *arg = Argument::getNth(f->parameters, i); | |
| 774 Identifier *id = arg->ident; | |
| 775 if (!id) | |
| 776 { | |
| 777 /* Generate identifier for un-named parameter, | |
| 778 * because we need it later on. | |
| 779 */ | |
| 780 OutBuffer buf; | |
|
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781 buf.printf("_param_%"PRIuSIZE, i); |
| 159 | 782 char *name = (char *)buf.extractData(); |
| 783 id = new Identifier(name, TOKidentifier); | |
| 784 arg->ident = id; | |
| 785 } | |
| 786 VarDeclaration *v = new VarDeclaration(loc, arg->type, id, NULL); | |
| 787 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 788 v->storage_class |= STCparameter; | |
| 789 if (f->varargs == 2 && i + 1 == nparams) | |
| 790 v->storage_class |= STCvariadic; | |
| 791 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
| 792 if (v->storage_class & STClazy) | |
| 793 v->storage_class |= STCin; | |
| 794 v->semantic(sc2); | |
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795 #if IN_LLVM |
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796 // LLVMDC: the argument needs an addres if we want to attach debug info to it. |
|
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797 if (global.params.symdebug) |
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798 v->needsStorage = true; |
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799 #endif |
| 159 | 800 if (!sc2->insert(v)) |
| 801 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 802 else | |
| 803 parameters->push(v); | |
| 804 localsymtab->insert(v); | |
| 805 v->parent = this; | |
| 806 } | |
| 807 } | |
| 808 | |
| 809 // Declare the tuple symbols and put them in the symbol table, | |
| 810 // but not in parameters[]. | |
| 811 if (f->parameters) | |
| 812 { | |
| 813 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 814 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 815 | |
| 816 if (!arg->ident) | |
| 817 continue; // never used, so ignore | |
| 818 if (arg->type->ty == Ttuple) | |
| 819 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 820 size_t dim = Argument::dim(t->arguments); | |
| 821 Objects *exps = new Objects(); | |
| 822 exps->setDim(dim); | |
| 823 for (size_t j = 0; j < dim; j++) | |
| 824 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 825 assert(narg->ident); | |
| 826 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
| 827 assert(v); | |
| 828 Expression *e = new VarExp(0, v); | |
| 829 exps->data[j] = (void *)e; | |
| 830 } | |
| 831 assert(arg->ident); | |
| 832 TupleDeclaration *v = new TupleDeclaration(0, arg->ident, exps); | |
| 833 //printf("declaring tuple %s\n", v->toChars()); | |
| 834 v->isexp = 1; | |
| 835 if (!sc2->insert(v)) | |
| 836 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 837 localsymtab->insert(v); | |
| 838 v->parent = this; | |
| 839 } | |
| 840 } | |
| 841 } | |
| 842 | |
| 843 /* Do the semantic analysis on the [in] preconditions and | |
| 844 * [out] postconditions. | |
| 845 */ | |
| 846 sc2->incontract++; | |
| 847 | |
| 848 if (frequire) | |
| 849 { /* frequire is composed of the [in] contracts | |
| 850 */ | |
| 851 // BUG: need to error if accessing out parameters | |
| 852 // BUG: need to treat parameters as const | |
| 853 // BUG: need to disallow returns and throws | |
| 854 // BUG: verify that all in and ref parameters are read | |
| 855 frequire = frequire->semantic(sc2); | |
| 856 labtab = NULL; // so body can't refer to labels | |
| 857 } | |
| 858 | |
| 859 if (fensure || addPostInvariant()) | |
| 860 { /* fensure is composed of the [out] contracts | |
| 861 */ | |
| 862 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 863 sym->parent = sc2->scopesym; | |
| 864 sc2 = sc2->push(sym); | |
| 865 | |
| 866 assert(type->nextOf()); | |
| 867 if (type->nextOf()->ty == Tvoid) | |
| 868 { | |
| 869 if (outId) | |
| 870 error("void functions have no result"); | |
| 871 } | |
| 872 else | |
| 873 { | |
| 874 if (!outId) | |
| 875 outId = Id::result; // provide a default | |
| 876 } | |
| 877 | |
| 878 if (outId) | |
| 879 { // Declare result variable | |
| 880 VarDeclaration *v; | |
| 881 Loc loc = this->loc; | |
| 882 | |
| 883 if (fensure) | |
| 884 loc = fensure->loc; | |
| 885 | |
| 886 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
| 887 v->noauto = 1; | |
| 888 sc2->incontract--; | |
| 889 v->semantic(sc2); | |
| 890 sc2->incontract++; | |
| 891 if (!sc2->insert(v)) | |
| 892 error("out result %s is already defined", v->toChars()); | |
| 893 v->parent = this; | |
| 894 vresult = v; | |
| 895 | |
| 896 // vresult gets initialized with the function return value | |
| 897 // in ReturnStatement::semantic() | |
| 898 } | |
| 899 | |
| 900 // BUG: need to treat parameters as const | |
| 901 // BUG: need to disallow returns and throws | |
| 902 if (fensure) | |
| 903 { fensure = fensure->semantic(sc2); | |
| 904 labtab = NULL; // so body can't refer to labels | |
| 905 } | |
| 906 | |
| 907 if (!global.params.useOut) | |
| 908 { fensure = NULL; // discard | |
| 909 vresult = NULL; | |
| 910 } | |
| 911 | |
| 912 // Postcondition invariant | |
| 913 if (addPostInvariant()) | |
| 914 { | |
| 915 Expression *e = NULL; | |
| 916 if (isCtorDeclaration()) | |
| 917 { | |
| 918 // Call invariant directly only if it exists | |
| 919 InvariantDeclaration *inv = ad->inv; | |
| 920 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 921 | |
| 922 while (!inv && cd) | |
| 923 { | |
| 924 cd = cd->baseClass; | |
| 925 if (!cd) | |
| 926 break; | |
| 927 inv = cd->inv; | |
| 928 } | |
| 929 if (inv) | |
| 930 { | |
| 931 e = new DsymbolExp(0, inv); | |
| 932 e = new CallExp(0, e); | |
| 933 e = e->semantic(sc2); | |
| 934 } | |
| 935 } | |
| 936 else | |
| 937 { // Call invariant virtually | |
| 938 ThisExp *v = new ThisExp(0); | |
| 939 v->type = vthis->type; | |
| 940 e = new AssertExp(0, v); | |
| 941 } | |
| 942 if (e) | |
| 943 { | |
| 944 ExpStatement *s = new ExpStatement(0, e); | |
| 945 if (fensure) | |
| 946 fensure = new CompoundStatement(0, s, fensure); | |
| 947 else | |
| 948 fensure = s; | |
| 949 } | |
| 950 } | |
| 951 | |
| 952 if (fensure) | |
| 953 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
| 954 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
| 955 ls->isReturnLabel = 1; | |
| 956 returnLabel->statement = ls; | |
| 957 } | |
| 958 sc2 = sc2->pop(); | |
| 959 } | |
| 960 | |
| 961 sc2->incontract--; | |
| 962 | |
| 963 if (fbody) | |
| 964 { ClassDeclaration *cd = isClassMember(); | |
| 965 | |
| 966 /* If this is a class constructor | |
| 967 */ | |
| 968 if (isCtorDeclaration() && cd) | |
| 969 { | |
| 970 for (int i = 0; i < cd->fields.dim; i++) | |
| 971 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 972 | |
| 973 v->ctorinit = 0; | |
| 974 } | |
| 975 } | |
| 976 | |
| 977 if (inferRetType || f->retStyle() != RETstack) | |
| 978 nrvo_can = 0; | |
| 979 | |
| 980 fbody = fbody->semantic(sc2); | |
| 981 | |
| 982 if (inferRetType) | |
| 983 { // If no return type inferred yet, then infer a void | |
| 984 if (!type->nextOf()) | |
| 985 { | |
| 986 ((TypeFunction *)type)->next = Type::tvoid; | |
| 987 type = type->semantic(loc, sc); | |
| 988 } | |
| 989 f = (TypeFunction *)type; | |
| 990 } | |
| 991 | |
| 336 | 992 int offend = fbody ? fbody->blockExit() & BEfallthru : TRUE; |
| 993 //int offend = fbody ? fbody->fallOffEnd() : TRUE; | |
| 159 | 994 |
| 995 if (isStaticCtorDeclaration()) | |
| 996 { /* It's a static constructor. Ensure that all | |
| 997 * ctor consts were initialized. | |
| 998 */ | |
| 999 | |
| 1000 Dsymbol *p = toParent(); | |
| 1001 ScopeDsymbol *ad = p->isScopeDsymbol(); | |
| 1002 if (!ad) | |
| 1003 { | |
| 1004 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); | |
| 1005 } | |
| 1006 else | |
| 1007 { | |
| 1008 for (int i = 0; i < ad->members->dim; i++) | |
| 1009 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; | |
| 1010 | |
| 1011 s->checkCtorConstInit(); | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 | |
| 1016 if (isCtorDeclaration() && cd) | |
| 1017 { | |
| 1018 //printf("callSuper = x%x\n", sc2->callSuper); | |
| 1019 | |
| 1020 // Verify that all the ctorinit fields got initialized | |
| 1021 if (!(sc2->callSuper & CSXthis_ctor)) | |
| 1022 { | |
| 1023 for (int i = 0; i < cd->fields.dim; i++) | |
| 1024 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 1025 | |
| 1026 if (v->ctorinit == 0 && v->isCtorinit()) | |
| 1027 error("missing initializer for const field %s", v->toChars()); | |
| 1028 } | |
| 1029 } | |
| 1030 | |
| 1031 if (!(sc2->callSuper & CSXany_ctor) && | |
| 1032 cd->baseClass && cd->baseClass->ctor) | |
| 1033 { | |
| 1034 sc2->callSuper = 0; | |
| 1035 | |
| 1036 // Insert implicit super() at start of fbody | |
| 1037 Expression *e1 = new SuperExp(0); | |
| 1038 Expression *e = new CallExp(0, e1); | |
| 1039 | |
| 1040 unsigned errors = global.errors; | |
| 1041 global.gag++; | |
| 1042 e = e->semantic(sc2); | |
| 1043 global.gag--; | |
| 1044 if (errors != global.errors) | |
| 1045 error("no match for implicit super() call in constructor"); | |
| 1046 | |
| 1047 Statement *s = new ExpStatement(0, e); | |
| 1048 fbody = new CompoundStatement(0, s, fbody); | |
| 1049 } | |
| 1050 } | |
| 1051 else if (fes) | |
| 1052 { // For foreach(){} body, append a return 0; | |
| 1053 Expression *e = new IntegerExp(0); | |
| 1054 Statement *s = new ReturnStatement(0, e); | |
| 1055 fbody = new CompoundStatement(0, fbody, s); | |
| 1056 assert(!returnLabel); | |
| 1057 } | |
| 1058 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
| 1059 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
| 1060 else if (!inlineAsm) | |
| 1061 { | |
| 1062 if (type->nextOf()->ty == Tvoid) | |
| 1063 { | |
| 1064 if (offend && isMain()) | |
| 1065 { // Add a return 0; statement | |
| 1066 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
| 1067 fbody = new CompoundStatement(0, fbody, s); | |
| 1068 } | |
| 1069 } | |
| 1070 else | |
| 1071 { | |
| 1072 if (offend) | |
| 1073 { Expression *e; | |
| 1074 | |
| 1075 if (global.params.warnings) | |
|
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1076 { warning("%s: no return at end of function", locToChars()); |
| 159 | 1077 } |
| 1078 | |
| 1079 if (global.params.useAssert && | |
| 1080 !global.params.useInline) | |
| 1081 { /* Add an assert(0, msg); where the missing return | |
| 1082 * should be. | |
| 1083 */ | |
| 1084 e = new AssertExp( | |
| 1085 endloc, | |
| 1086 new IntegerExp(0), | |
| 1087 new StringExp(loc, "missing return expression") | |
| 1088 ); | |
| 1089 } | |
| 1090 else | |
| 1091 e = new HaltExp(endloc); | |
| 1092 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
| 1093 e = e->semantic(sc2); | |
| 1094 Statement *s = new ExpStatement(0, e); | |
| 1095 fbody = new CompoundStatement(0, fbody, s); | |
| 1096 } | |
| 1097 } | |
| 1098 } | |
| 1099 } | |
| 1100 | |
| 1101 { | |
| 1102 Statements *a = new Statements(); | |
| 1103 | |
| 1104 // Merge in initialization of 'out' parameters | |
| 1105 if (parameters) | |
| 1106 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1107 { | |
| 1108 VarDeclaration *v = (VarDeclaration *)parameters->data[i]; | |
| 1109 if (v->storage_class & STCout) | |
| 1110 { | |
| 1111 assert(v->init); | |
| 1112 ExpInitializer *ie = v->init->isExpInitializer(); | |
| 1113 assert(ie); | |
| 1114 a->push(new ExpStatement(0, ie->exp)); | |
| 1115 } | |
| 1116 } | |
| 1117 } | |
| 1118 | |
| 1119 // we'll handle variadics ourselves | |
| 1120 #if !IN_LLVM | |
| 1121 if (argptr) | |
| 1122 { // Initialize _argptr to point past non-variadic arg | |
| 1123 #if IN_GCC | |
| 1124 // Handled in FuncDeclaration::toObjFile | |
| 1125 v_argptr = argptr; | |
| 1126 v_argptr->init = new VoidInitializer(loc); | |
| 1127 #else | |
| 1128 Expression *e1; | |
| 1129 Expression *e; | |
| 1130 Type *t = argptr->type; | |
| 1131 VarDeclaration *p; | |
| 1132 unsigned offset; | |
| 1133 | |
| 1134 e1 = new VarExp(0, argptr); | |
| 1135 if (parameters && parameters->dim) | |
| 1136 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
| 1137 else | |
| 1138 p = v_arguments; // last parameter is _arguments[] | |
| 1139 offset = p->type->size(); | |
| 1140 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1141 e = new SymOffExp(0, p, offset); | |
| 1142 e = new AssignExp(0, e1, e); | |
| 1143 e->type = t; | |
| 1144 a->push(new ExpStatement(0, e)); | |
| 1145 #endif // IN_GCC | |
| 1146 } | |
| 1147 | |
| 1148 if (_arguments) | |
| 1149 { | |
| 1150 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1151 * _arguments = v_arguments.elements; | |
| 1152 */ | |
| 1153 Expression *e = new VarExp(0, v_arguments); | |
| 1154 e = new DotIdExp(0, e, Id::elements); | |
| 1155 Expression *e1 = new VarExp(0, _arguments); | |
| 1156 e = new AssignExp(0, e1, e); | |
| 1157 e = e->semantic(sc); | |
| 1158 a->push(new ExpStatement(0, e)); | |
| 1159 } | |
| 1160 | |
| 1161 #endif // !IN_LLVM | |
| 1162 | |
| 1163 // Merge contracts together with body into one compound statement | |
| 1164 | |
| 1165 #ifdef _DH | |
| 1166 if (frequire && global.params.useIn) | |
| 1167 { frequire->incontract = 1; | |
| 1168 a->push(frequire); | |
| 1169 } | |
| 1170 #else | |
| 1171 if (frequire && global.params.useIn) | |
| 1172 a->push(frequire); | |
| 1173 #endif | |
| 1174 | |
| 1175 // Precondition invariant | |
| 1176 if (addPreInvariant()) | |
| 1177 { | |
| 1178 Expression *e = NULL; | |
| 1179 if (isDtorDeclaration()) | |
| 1180 { | |
| 1181 // Call invariant directly only if it exists | |
| 1182 InvariantDeclaration *inv = ad->inv; | |
| 1183 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1184 | |
| 1185 while (!inv && cd) | |
| 1186 { | |
| 1187 cd = cd->baseClass; | |
| 1188 if (!cd) | |
| 1189 break; | |
| 1190 inv = cd->inv; | |
| 1191 } | |
| 1192 if (inv) | |
| 1193 { | |
| 1194 e = new DsymbolExp(0, inv); | |
| 1195 e = new CallExp(0, e); | |
| 1196 e = e->semantic(sc2); | |
| 1197 } | |
| 1198 } | |
| 1199 else | |
| 1200 { // Call invariant virtually | |
| 1201 ThisExp *v = new ThisExp(0); | |
| 1202 v->type = vthis->type; | |
| 1203 Expression *se = new StringExp(0, "null this"); | |
| 1204 se = se->semantic(sc); | |
| 1205 se->type = Type::tchar->arrayOf(); | |
| 1206 e = new AssertExp(loc, v, se); | |
| 1207 } | |
| 1208 if (e) | |
| 1209 { | |
| 1210 ExpStatement *s = new ExpStatement(0, e); | |
| 1211 a->push(s); | |
| 1212 } | |
| 1213 } | |
| 1214 | |
| 1215 if (fbody) | |
| 1216 a->push(fbody); | |
| 1217 | |
| 1218 if (fensure) | |
| 1219 { | |
| 1220 a->push(returnLabel->statement); | |
| 1221 | |
| 1222 if (type->nextOf()->ty != Tvoid) | |
| 1223 { | |
| 1224 // Create: return vresult; | |
| 1225 assert(vresult); | |
| 1226 Expression *e = new VarExp(0, vresult); | |
| 1227 if (tintro) | |
| 1228 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
| 1229 e = e->semantic(sc); | |
| 1230 } | |
| 1231 ReturnStatement *s = new ReturnStatement(0, e); | |
| 1232 a->push(s); | |
| 1233 } | |
| 1234 } | |
| 1235 | |
| 1236 fbody = new CompoundStatement(0, a); | |
| 1237 } | |
| 1238 | |
| 1239 sc2->callSuper = 0; | |
| 1240 sc2->pop(); | |
| 1241 } | |
| 1242 semanticRun = 2; | |
| 1243 } | |
| 1244 | |
| 1245 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1246 { | |
| 1247 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
| 1248 | |
| 1249 type->toCBuffer(buf, ident, hgs); | |
| 1250 bodyToCBuffer(buf, hgs); | |
| 1251 } | |
| 1252 | |
| 1253 | |
| 1254 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1255 { | |
| 1256 if (fbody && | |
| 1257 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
| 1258 ) | |
| 1259 { buf->writenl(); | |
| 1260 | |
| 1261 // in{} | |
| 1262 if (frequire) | |
| 1263 { buf->writestring("in"); | |
| 1264 buf->writenl(); | |
| 1265 frequire->toCBuffer(buf, hgs); | |
| 1266 } | |
| 1267 | |
| 1268 // out{} | |
| 1269 if (fensure) | |
| 1270 { buf->writestring("out"); | |
| 1271 if (outId) | |
| 1272 { buf->writebyte('('); | |
| 1273 buf->writestring(outId->toChars()); | |
| 1274 buf->writebyte(')'); | |
| 1275 } | |
| 1276 buf->writenl(); | |
| 1277 fensure->toCBuffer(buf, hgs); | |
| 1278 } | |
| 1279 | |
| 1280 if (frequire || fensure) | |
| 1281 { buf->writestring("body"); | |
| 1282 buf->writenl(); | |
| 1283 } | |
| 1284 | |
| 1285 buf->writebyte('{'); | |
| 1286 buf->writenl(); | |
| 1287 fbody->toCBuffer(buf, hgs); | |
| 1288 buf->writebyte('}'); | |
| 1289 buf->writenl(); | |
| 1290 } | |
| 1291 else | |
| 1292 { buf->writeByte(';'); | |
| 1293 buf->writenl(); | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 /**************************************************** | |
| 1298 * Determine if 'this' overrides fd. | |
| 1299 * Return !=0 if it does. | |
| 1300 */ | |
| 1301 | |
| 1302 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
| 1303 { int result = 0; | |
| 1304 | |
| 1305 if (fd->ident == ident) | |
| 1306 { | |
| 1307 int cov = type->covariant(fd->type); | |
| 1308 if (cov) | |
| 1309 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
| 1310 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
| 1311 | |
| 1312 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
| 1313 result = 1; | |
| 1314 } | |
| 1315 } | |
| 1316 return result; | |
| 1317 } | |
| 1318 | |
| 1319 /************************************************* | |
| 1320 * Find index of function in vtbl[0..dim] that | |
| 1321 * this function overrides. | |
| 1322 * Returns: | |
| 1323 * -1 didn't find one | |
| 1324 * -2 can't determine because of forward references | |
| 1325 */ | |
| 1326 | |
| 1327 int FuncDeclaration::findVtblIndex(Array *vtbl, int dim) | |
| 1328 { | |
| 1329 for (int vi = 0; vi < dim; vi++) | |
| 1330 { | |
| 1331 FuncDeclaration *fdv = ((Dsymbol *)vtbl->data[vi])->isFuncDeclaration(); | |
| 1332 if (fdv && fdv->ident == ident) | |
| 1333 { | |
| 1334 int cov = type->covariant(fdv->type); | |
| 1335 //printf("\tbaseclass cov = %d\n", cov); | |
| 1336 switch (cov) | |
| 1337 { | |
| 1338 case 0: // types are distinct | |
| 1339 break; | |
| 1340 | |
| 1341 case 1: | |
| 1342 return vi; | |
| 1343 | |
| 1344 case 2: | |
| 1345 //type->print(); | |
| 1346 //fdv->type->print(); | |
| 1347 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 1348 error("of type %s overrides but is not covariant with %s of type %s", | |
| 1349 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 1350 break; | |
| 1351 | |
| 1352 case 3: | |
| 1353 return -2; // forward references | |
| 1354 | |
| 1355 default: | |
| 1356 assert(0); | |
| 1357 } | |
| 1358 } | |
| 1359 } | |
| 1360 return -1; | |
| 1361 } | |
| 1362 | |
| 1363 /**************************************************** | |
| 1364 * Overload this FuncDeclaration with the new one f. | |
| 1365 * Return !=0 if successful; i.e. no conflict. | |
| 1366 */ | |
| 1367 | |
| 1368 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
| 1369 { | |
| 1370 FuncDeclaration *f; | |
| 1371 AliasDeclaration *a; | |
| 1372 | |
| 1373 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
| 1374 a = s->isAliasDeclaration(); | |
| 1375 if (a) | |
| 1376 { | |
| 1377 if (overnext) | |
| 1378 return overnext->overloadInsert(a); | |
| 1379 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
| 1380 { | |
| 1381 //printf("\ta = '%s'\n", a->type->toChars()); | |
| 1382 return FALSE; | |
| 1383 } | |
| 1384 overnext = a; | |
| 1385 //printf("\ttrue: no conflict\n"); | |
| 1386 return TRUE; | |
| 1387 } | |
| 1388 f = s->isFuncDeclaration(); | |
| 1389 if (!f) | |
| 1390 return FALSE; | |
| 1391 | |
| 1392 if (type && f->type && // can be NULL for overloaded constructors | |
| 1393 f->type->covariant(type) && | |
| 1394 !isFuncAliasDeclaration()) | |
| 1395 { | |
| 1396 //printf("\tfalse: conflict %s\n", kind()); | |
| 1397 return FALSE; | |
| 1398 } | |
| 1399 | |
| 1400 if (overnext) | |
| 1401 return overnext->overloadInsert(f); | |
| 1402 overnext = f; | |
| 1403 //printf("\ttrue: no conflict\n"); | |
| 1404 return TRUE; | |
| 1405 } | |
| 1406 | |
| 1407 /******************************************** | |
| 1408 * Find function in overload list that exactly matches t. | |
| 1409 */ | |
| 1410 | |
| 1411 /*************************************************** | |
| 1412 * Visit each overloaded function in turn, and call | |
| 1413 * (*fp)(param, f) on it. | |
| 1414 * Exit when no more, or (*fp)(param, f) returns 1. | |
| 1415 * Returns: | |
| 1416 * 0 continue | |
| 1417 * 1 done | |
| 1418 */ | |
| 1419 | |
| 1420 int overloadApply(FuncDeclaration *fstart, | |
| 1421 int (*fp)(void *, FuncDeclaration *), | |
| 1422 void *param) | |
| 1423 { | |
| 1424 FuncDeclaration *f; | |
| 1425 Declaration *d; | |
| 1426 Declaration *next; | |
| 1427 | |
| 1428 for (d = fstart; d; d = next) | |
| 1429 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1430 | |
| 1431 if (fa) | |
| 1432 { | |
| 1433 if (overloadApply(fa->funcalias, fp, param)) | |
| 1434 return 1; | |
| 1435 next = fa->overnext; | |
| 1436 } | |
| 1437 else | |
| 1438 { | |
| 1439 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1440 | |
| 1441 if (a) | |
| 1442 { | |
| 1443 Dsymbol *s = a->toAlias(); | |
| 1444 next = s->isDeclaration(); | |
| 1445 if (next == a) | |
| 1446 break; | |
| 1447 if (next == fstart) | |
| 1448 break; | |
| 1449 } | |
| 1450 else | |
| 1451 { | |
| 1452 f = d->isFuncDeclaration(); | |
| 1453 if (!f) | |
| 1454 { d->error("is aliased to a function"); | |
| 1455 break; // BUG: should print error message? | |
| 1456 } | |
| 1457 if ((*fp)(param, f)) | |
| 1458 return 1; | |
| 1459 | |
| 1460 next = f->overnext; | |
| 1461 } | |
| 1462 } | |
| 1463 } | |
| 1464 return 0; | |
| 1465 } | |
| 1466 | |
| 1467 /******************************************** | |
| 1468 * Find function in overload list that exactly matches t. | |
| 1469 */ | |
| 1470 | |
| 1471 struct Param1 | |
| 1472 { | |
| 1473 Type *t; // type to match | |
| 1474 FuncDeclaration *f; // return value | |
| 1475 }; | |
| 1476 | |
| 1477 int fp1(void *param, FuncDeclaration *f) | |
| 1478 { Param1 *p = (Param1 *)param; | |
| 1479 Type *t = p->t; | |
| 1480 | |
| 1481 if (t->equals(f->type)) | |
| 1482 { p->f = f; | |
| 1483 return 1; | |
| 1484 } | |
| 1485 | |
| 336 | 1486 #if DMDV2 |
| 159 | 1487 /* Allow covariant matches, if it's just a const conversion |
| 1488 * of the return type | |
| 1489 */ | |
| 1490 if (t->ty == Tfunction) | |
| 1491 { TypeFunction *tf = (TypeFunction *)f->type; | |
| 1492 if (tf->covariant(t) == 1 && | |
| 1493 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
| 1494 { | |
| 1495 p->f = f; | |
| 1496 return 1; | |
| 1497 } | |
| 1498 } | |
| 1499 #endif | |
| 1500 return 0; | |
| 1501 } | |
| 1502 | |
| 1503 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1504 { | |
| 1505 Param1 p; | |
| 1506 p.t = t; | |
| 1507 p.f = NULL; | |
| 1508 overloadApply(this, &fp1, &p); | |
| 1509 return p.f; | |
| 1510 } | |
| 1511 | |
| 1512 #if 0 | |
| 1513 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1514 { | |
| 1515 FuncDeclaration *f; | |
| 1516 Declaration *d; | |
| 1517 Declaration *next; | |
| 1518 | |
| 1519 for (d = this; d; d = next) | |
| 1520 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1521 | |
| 1522 if (fa) | |
| 1523 { | |
| 1524 FuncDeclaration *f2 = fa->funcalias->overloadExactMatch(t); | |
| 1525 if (f2) | |
| 1526 return f2; | |
| 1527 next = fa->overnext; | |
| 1528 } | |
| 1529 else | |
| 1530 { | |
| 1531 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1532 | |
| 1533 if (a) | |
| 1534 { | |
| 1535 Dsymbol *s = a->toAlias(); | |
| 1536 next = s->isDeclaration(); | |
| 1537 if (next == a) | |
| 1538 break; | |
| 1539 } | |
| 1540 else | |
| 1541 { | |
| 1542 f = d->isFuncDeclaration(); | |
| 1543 if (!f) | |
| 1544 break; // BUG: should print error message? | |
| 1545 if (t->equals(d->type)) | |
| 1546 return f; | |
| 1547 next = f->overnext; | |
| 1548 } | |
| 1549 } | |
| 1550 } | |
| 1551 return NULL; | |
| 1552 } | |
| 1553 #endif | |
| 1554 | |
| 1555 /******************************************** | |
| 1556 * Decide which function matches the arguments best. | |
| 1557 */ | |
| 1558 | |
| 1559 struct Param2 | |
| 1560 { | |
| 1561 Match *m; | |
| 1562 Expressions *arguments; | |
| 1563 }; | |
| 1564 | |
| 1565 int fp2(void *param, FuncDeclaration *f) | |
| 1566 { Param2 *p = (Param2 *)param; | |
| 1567 Match *m = p->m; | |
| 1568 Expressions *arguments = p->arguments; | |
| 1569 MATCH match; | |
| 1570 | |
| 1571 if (f != m->lastf) // skip duplicates | |
| 1572 { | |
| 1573 TypeFunction *tf; | |
| 1574 | |
| 1575 m->anyf = f; | |
| 1576 tf = (TypeFunction *)f->type; | |
| 1577 match = (MATCH) tf->callMatch(arguments); | |
| 1578 //printf("match = %d\n", match); | |
| 1579 if (match != MATCHnomatch) | |
| 1580 { | |
| 1581 if (match > m->last) | |
| 1582 goto LfIsBetter; | |
| 1583 | |
| 1584 if (match < m->last) | |
| 1585 goto LlastIsBetter; | |
| 1586 | |
| 1587 /* See if one of the matches overrides the other. | |
| 1588 */ | |
| 1589 if (m->lastf->overrides(f)) | |
| 1590 goto LlastIsBetter; | |
| 1591 else if (f->overrides(m->lastf)) | |
| 1592 goto LfIsBetter; | |
| 1593 | |
| 1594 Lambiguous: | |
| 1595 m->nextf = f; | |
| 1596 m->count++; | |
| 1597 return 0; | |
| 1598 | |
| 1599 LfIsBetter: | |
| 1600 m->last = match; | |
| 1601 m->lastf = f; | |
| 1602 m->count = 1; | |
| 1603 return 0; | |
| 1604 | |
| 1605 LlastIsBetter: | |
| 1606 return 0; | |
| 1607 } | |
| 1608 } | |
| 1609 return 0; | |
| 1610 } | |
| 1611 | |
| 1612 | |
| 1613 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1614 { | |
| 1615 Param2 p; | |
| 1616 p.m = m; | |
| 1617 p.arguments = arguments; | |
| 1618 overloadApply(fstart, &fp2, &p); | |
| 1619 } | |
| 1620 | |
| 1621 #if 0 | |
| 1622 // Recursive helper function | |
| 1623 | |
| 1624 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1625 { | |
| 1626 MATCH match; | |
| 1627 Declaration *d; | |
| 1628 Declaration *next; | |
| 1629 | |
| 1630 for (d = fstart; d; d = next) | |
| 1631 { | |
| 1632 FuncDeclaration *f; | |
| 1633 FuncAliasDeclaration *fa; | |
| 1634 AliasDeclaration *a; | |
| 1635 | |
| 1636 fa = d->isFuncAliasDeclaration(); | |
| 1637 if (fa) | |
| 1638 { | |
| 1639 overloadResolveX(m, fa->funcalias, arguments); | |
| 1640 next = fa->overnext; | |
| 1641 } | |
| 1642 else if ((f = d->isFuncDeclaration()) != NULL) | |
| 1643 { | |
| 1644 next = f->overnext; | |
| 1645 if (f == m->lastf) | |
| 1646 continue; // skip duplicates | |
| 1647 else | |
| 1648 { | |
| 1649 TypeFunction *tf; | |
| 1650 | |
| 1651 m->anyf = f; | |
| 1652 tf = (TypeFunction *)f->type; | |
| 1653 match = (MATCH) tf->callMatch(arguments); | |
| 1654 //printf("match = %d\n", match); | |
| 1655 if (match != MATCHnomatch) | |
| 1656 { | |
| 1657 if (match > m->last) | |
| 1658 goto LfIsBetter; | |
| 1659 | |
| 1660 if (match < m->last) | |
| 1661 goto LlastIsBetter; | |
| 1662 | |
| 1663 /* See if one of the matches overrides the other. | |
| 1664 */ | |
| 1665 if (m->lastf->overrides(f)) | |
| 1666 goto LlastIsBetter; | |
| 1667 else if (f->overrides(m->lastf)) | |
| 1668 goto LfIsBetter; | |
| 1669 | |
| 1670 Lambiguous: | |
| 1671 m->nextf = f; | |
| 1672 m->count++; | |
| 1673 continue; | |
| 1674 | |
| 1675 LfIsBetter: | |
| 1676 m->last = match; | |
| 1677 m->lastf = f; | |
| 1678 m->count = 1; | |
| 1679 continue; | |
| 1680 | |
| 1681 LlastIsBetter: | |
| 1682 continue; | |
| 1683 } | |
| 1684 } | |
| 1685 } | |
| 1686 else if ((a = d->isAliasDeclaration()) != NULL) | |
| 1687 { | |
| 1688 Dsymbol *s = a->toAlias(); | |
| 1689 next = s->isDeclaration(); | |
| 1690 if (next == a) | |
| 1691 break; | |
| 1692 if (next == fstart) | |
| 1693 break; | |
| 1694 } | |
| 1695 else | |
| 1696 { d->error("is aliased to a function"); | |
| 1697 break; | |
| 1698 } | |
| 1699 } | |
| 1700 } | |
| 1701 #endif | |
| 1702 | |
| 1703 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expressions *arguments) | |
| 1704 { | |
| 1705 TypeFunction *tf; | |
| 1706 Match m; | |
| 1707 | |
| 1708 #if 0 | |
| 1709 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
| 1710 if (arguments) | |
| 1711 { int i; | |
| 1712 | |
| 1713 for (i = 0; i < arguments->dim; i++) | |
| 1714 { Expression *arg; | |
| 1715 | |
| 1716 arg = (Expression *)arguments->data[i]; | |
| 1717 assert(arg->type); | |
| 1718 printf("\t%s: ", arg->toChars()); | |
| 1719 arg->type->print(); | |
| 1720 } | |
| 1721 } | |
| 1722 #endif | |
| 1723 | |
| 1724 memset(&m, 0, sizeof(m)); | |
| 1725 m.last = MATCHnomatch; | |
| 1726 overloadResolveX(&m, this, arguments); | |
| 1727 | |
| 1728 if (m.count == 1) // exactly one match | |
| 1729 { | |
| 1730 return m.lastf; | |
| 1731 } | |
| 1732 else | |
| 1733 { | |
| 1734 OutBuffer buf; | |
| 1735 | |
| 1736 if (arguments) | |
| 1737 { | |
| 1738 HdrGenState hgs; | |
| 1739 | |
| 1740 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
| 1741 } | |
| 1742 | |
| 1743 if (m.last == MATCHnomatch) | |
| 1744 { | |
| 1745 tf = (TypeFunction *)type; | |
| 1746 | |
| 1747 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
| 1748 error(loc, "%s does not match parameter types (%s)", | |
| 1749 Argument::argsTypesToChars(tf->parameters, tf->varargs), | |
| 1750 buf.toChars()); | |
| 1751 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1752 } | |
| 1753 else | |
| 1754 { | |
| 1755 #if 1 | |
| 1756 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
| 1757 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
| 1758 | |
| 1759 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1760 buf.toChars(), | |
| 1761 m.lastf->toPrettyChars(), Argument::argsTypesToChars(t1->parameters, t1->varargs), | |
| 1762 m.nextf->toPrettyChars(), Argument::argsTypesToChars(t2->parameters, t2->varargs)); | |
| 1763 #else | |
| 1764 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1765 m.lastf->type->toChars(), | |
| 1766 m.nextf->type->toChars(), | |
| 1767 m.lastf->toChars()); | |
| 1768 #endif | |
| 1769 return m.lastf; | |
| 1770 } | |
| 1771 } | |
| 1772 } | |
| 1773 | |
| 1774 /******************************** | |
| 1775 * Labels are in a separate scope, one per function. | |
| 1776 */ | |
| 1777 | |
| 1778 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
| 1779 { Dsymbol *s; | |
| 1780 | |
| 1781 if (!labtab) | |
| 1782 labtab = new DsymbolTable(); // guess we need one | |
| 1783 | |
| 1784 s = labtab->lookup(ident); | |
| 1785 if (!s) | |
| 1786 { | |
| 1787 s = new LabelDsymbol(ident); | |
| 1788 labtab->insert(s); | |
| 1789 } | |
| 1790 return (LabelDsymbol *)s; | |
| 1791 } | |
| 336 | 1792 |
| 159 | 1793 /**************************************** |
| 1794 * If non-static member function that has a 'this' pointer, | |
| 1795 * return the aggregate it is a member of. | |
| 1796 * Otherwise, return NULL. | |
| 1797 */ | |
| 1798 | |
| 1799 AggregateDeclaration *FuncDeclaration::isThis() | |
| 1800 { AggregateDeclaration *ad; | |
| 1801 | |
| 1802 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
| 1803 ad = NULL; | |
| 1804 if ((storage_class & STCstatic) == 0) | |
| 1805 { | |
| 1806 ad = isMember2(); | |
| 1807 } | |
| 1808 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
| 1809 return ad; | |
| 1810 } | |
| 1811 | |
| 1812 AggregateDeclaration *FuncDeclaration::isMember2() | |
| 1813 { AggregateDeclaration *ad; | |
| 1814 | |
| 1815 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
| 1816 ad = NULL; | |
| 1817 for (Dsymbol *s = this; s; s = s->parent) | |
| 1818 { | |
| 1819 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
| 1820 ad = s->isMember(); | |
| 1821 if (ad) | |
| 1822 { //printf("test4\n"); | |
| 1823 break; | |
| 1824 } | |
| 1825 if (!s->parent || | |
| 1826 (!s->parent->isTemplateInstance())) | |
| 1827 { //printf("test5\n"); | |
| 1828 break; | |
| 1829 } | |
| 1830 } | |
| 1831 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
| 1832 return ad; | |
| 1833 } | |
| 1834 | |
| 1835 /***************************************** | |
| 1836 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 1837 * Error if this cannot call fd. | |
| 1838 * Returns: | |
| 1839 * 0 same level | |
| 1840 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 1841 * >0 decrease nesting by number | |
| 1842 */ | |
| 1843 | |
| 1844 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
| 1845 { int level; | |
| 1846 Dsymbol *s; | |
| 1847 Dsymbol *fdparent; | |
| 1848 | |
| 1849 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
| 1850 fdparent = fd->toParent2(); | |
| 1851 if (fdparent == this) | |
| 1852 return -1; | |
| 1853 s = this; | |
| 1854 level = 0; | |
| 1855 while (fd != s && fdparent != s->toParent2()) | |
| 1856 { | |
| 1857 //printf("\ts = '%s'\n", s->toChars()); | |
| 1858 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
| 1859 if (thisfd) | |
| 1860 { if (!thisfd->isNested() && !thisfd->vthis) | |
| 1861 goto Lerr; | |
| 1862 } | |
| 1863 else | |
| 1864 { | |
| 1865 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
| 1866 if (thiscd) | |
| 1867 { if (!thiscd->isNested()) | |
| 1868 goto Lerr; | |
| 1869 } | |
| 1870 else | |
| 1871 goto Lerr; | |
| 1872 } | |
| 1873 | |
| 1874 s = s->toParent2(); | |
| 1875 assert(s); | |
| 1876 level++; | |
| 1877 } | |
| 1878 return level; | |
| 1879 | |
| 1880 Lerr: | |
| 1881 error(loc, "cannot access frame of function %s", fd->toChars()); | |
| 1882 return 1; | |
| 1883 } | |
| 1884 | |
| 1885 void FuncDeclaration::appendExp(Expression *e) | |
| 1886 { Statement *s; | |
| 1887 | |
| 1888 s = new ExpStatement(0, e); | |
| 1889 appendState(s); | |
| 1890 } | |
| 1891 | |
| 1892 void FuncDeclaration::appendState(Statement *s) | |
| 1893 { CompoundStatement *cs; | |
| 1894 | |
| 1895 if (!fbody) | |
| 1896 { Statements *a; | |
| 1897 | |
| 1898 a = new Statements(); | |
| 1899 fbody = new CompoundStatement(0, a); | |
| 1900 } | |
| 1901 cs = fbody->isCompoundStatement(); | |
| 1902 cs->statements->push(s); | |
| 1903 } | |
| 1904 | |
| 1905 | |
| 1906 int FuncDeclaration::isMain() | |
| 1907 { | |
| 1908 return ident == Id::main && | |
| 1909 linkage != LINKc && !isMember() && !isNested(); | |
| 1910 } | |
| 1911 | |
| 1912 int FuncDeclaration::isWinMain() | |
| 1913 { | |
| 1914 return ident == Id::WinMain && | |
| 1915 linkage != LINKc && !isMember(); | |
| 1916 } | |
| 1917 | |
| 1918 int FuncDeclaration::isDllMain() | |
| 1919 { | |
| 1920 return ident == Id::DllMain && | |
| 1921 linkage != LINKc && !isMember(); | |
| 1922 } | |
| 1923 | |
| 1924 int FuncDeclaration::isExport() | |
| 1925 { | |
| 1926 return protection == PROTexport; | |
| 1927 } | |
| 1928 | |
| 1929 int FuncDeclaration::isImportedSymbol() | |
| 1930 { | |
| 1931 //printf("isImportedSymbol()\n"); | |
| 1932 //printf("protection = %d\n", protection); | |
| 1933 return (protection == PROTexport) && !fbody; | |
| 1934 } | |
| 1935 | |
| 1936 // Determine if function goes into virtual function pointer table | |
| 1937 | |
| 1938 int FuncDeclaration::isVirtual() | |
| 1939 { | |
| 1940 #if 0 | |
| 1941 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
| 1942 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
| 1943 printf("result is %d\n", | |
| 1944 isMember() && | |
| 1945 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1946 toParent()->isClassDeclaration()); | |
| 1947 #endif | |
| 1948 return isMember() && | |
| 1949 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1950 toParent()->isClassDeclaration(); | |
| 1951 } | |
| 1952 | |
| 1953 int FuncDeclaration::isAbstract() | |
| 1954 { | |
| 1955 return storage_class & STCabstract; | |
| 1956 } | |
| 1957 | |
| 1958 int FuncDeclaration::isCodeseg() | |
| 1959 { | |
| 1960 return TRUE; // functions are always in the code segment | |
| 1961 } | |
| 1962 | |
| 1963 // Determine if function needs | |
| 1964 // a static frame pointer to its lexically enclosing function | |
| 1965 | |
| 1966 int FuncDeclaration::isNested() | |
| 1967 { | |
| 1968 //if (!toParent()) | |
| 1969 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
| 1970 //printf("\ttoParent() = '%s'\n", toParent()->toChars()); | |
| 1971 return ((storage_class & STCstatic) == 0) && | |
| 1972 (toParent2()->isFuncDeclaration() != NULL); | |
| 1973 } | |
| 1974 | |
| 1975 int FuncDeclaration::needThis() | |
| 1976 { | |
| 1977 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
| 1978 int i = isThis() != NULL; | |
| 1979 //printf("\t%d\n", i); | |
| 1980 if (!i && isFuncAliasDeclaration()) | |
| 1981 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
| 1982 return i; | |
| 1983 } | |
| 1984 | |
| 1985 int FuncDeclaration::addPreInvariant() | |
| 1986 { | |
| 1987 AggregateDeclaration *ad = isThis(); | |
| 1988 return (ad && | |
| 1989 //ad->isClassDeclaration() && | |
| 1990 global.params.useInvariants && | |
| 1991 (protection == PROTpublic || protection == PROTexport) && | |
| 1992 !naked); | |
| 1993 } | |
| 1994 | |
| 1995 int FuncDeclaration::addPostInvariant() | |
| 1996 { | |
| 1997 AggregateDeclaration *ad = isThis(); | |
| 1998 return (ad && | |
| 1999 ad->inv && | |
| 2000 //ad->isClassDeclaration() && | |
| 2001 global.params.useInvariants && | |
| 2002 (protection == PROTpublic || protection == PROTexport) && | |
| 2003 !naked); | |
| 2004 } | |
| 2005 | |
| 2006 /********************************** | |
| 2007 * Generate a FuncDeclaration for a runtime library function. | |
| 2008 */ | |
| 2009 | |
|
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2010 // |
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2011 // LLVMDC: Adjusted to give argument info to the runtime function decl. |
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2012 // |
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2013 |
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2014 FuncDeclaration *FuncDeclaration::genCfunc(Arguments *args, Type *treturn, char *name) |
| 159 | 2015 { |
|
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2016 return genCfunc(args, treturn, Lexer::idPool(name)); |
| 159 | 2017 } |
| 2018 | |
|
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2019 FuncDeclaration *FuncDeclaration::genCfunc(Arguments *args, Type *treturn, Identifier *id) |
| 159 | 2020 { |
| 2021 FuncDeclaration *fd; | |
| 2022 TypeFunction *tf; | |
| 2023 Dsymbol *s; | |
| 2024 static DsymbolTable *st = NULL; | |
| 2025 | |
| 2026 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
| 2027 //printf("treturn\n\t"); treturn->print(); | |
| 2028 | |
| 2029 // See if already in table | |
| 2030 if (!st) | |
| 2031 st = new DsymbolTable(); | |
| 2032 s = st->lookup(id); | |
| 2033 if (s) | |
| 2034 { | |
| 2035 fd = s->isFuncDeclaration(); | |
| 2036 assert(fd); | |
| 2037 assert(fd->type->nextOf()->equals(treturn)); | |
| 2038 } | |
| 2039 else | |
| 2040 { | |
|
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2041 tf = new TypeFunction(args, treturn, 0, LINKc); |
| 159 | 2042 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); |
| 2043 fd->protection = PROTpublic; | |
| 2044 fd->linkage = LINKc; | |
| 2045 | |
| 2046 st->insert(fd); | |
| 2047 } | |
| 2048 return fd; | |
| 2049 } | |
| 2050 | |
| 336 | 2051 const char *FuncDeclaration::kind() |
| 159 | 2052 { |
| 2053 return "function"; | |
| 2054 } | |
| 336 | 2055 |
| 159 | 2056 /******************************* |
| 2057 * Look at all the variables in this function that are referenced | |
| 2058 * by nested functions, and determine if a closure needs to be | |
| 2059 * created for them. | |
| 2060 */ | |
| 2061 | |
| 336 | 2062 #if DMDV2 |
| 159 | 2063 int FuncDeclaration::needsClosure() |
| 2064 { | |
| 2065 /* Need a closure for all the closureVars[] if any of the | |
| 2066 * closureVars[] are accessed by a | |
| 2067 * function that escapes the scope of this function. | |
| 2068 * We take the conservative approach and decide that any function that: | |
| 2069 * 1) is a virtual function | |
| 2070 * 2) has its address taken | |
| 2071 * 3) has a parent that escapes | |
| 336 | 2072 * |
| 2073 * Note that since a non-virtual function can be called by | |
| 2074 * a virtual one, if that non-virtual function accesses a closure | |
| 2075 * var, the closure still has to be taken. Hence, we check for isThis() | |
| 2076 * instead of isVirtual(). (thanks to David Friedman) | |
| 159 | 2077 */ |
| 2078 | |
| 2079 //printf("FuncDeclaration::needsClosure() %s\n", toChars()); | |
| 2080 for (int i = 0; i < closureVars.dim; i++) | |
| 2081 { VarDeclaration *v = (VarDeclaration *)closureVars.data[i]; | |
| 2082 assert(v->isVarDeclaration()); | |
| 2083 //printf("\tv = %s\n", v->toChars()); | |
| 2084 | |
| 2085 for (int j = 0; j < v->nestedrefs.dim; j++) | |
| 2086 { FuncDeclaration *f = (FuncDeclaration *)v->nestedrefs.data[j]; | |
| 2087 assert(f != this); | |
| 2088 | |
| 2089 //printf("\t\tf = %s, %d, %d\n", f->toChars(), f->isVirtual(), f->tookAddressOf); | |
| 336 | 2090 if (f->isThis() || f->tookAddressOf) |
| 159 | 2091 goto Lyes; // assume f escapes this function's scope |
| 2092 | |
| 2093 // Look to see if any parents of f that are below this escape | |
| 2094 for (Dsymbol *s = f->parent; s != this; s = s->parent) | |
| 2095 { | |
| 2096 f = s->isFuncDeclaration(); | |
| 336 | 2097 if (f && (f->isThis() || f->tookAddressOf)) |
| 159 | 2098 goto Lyes; |
| 2099 } | |
| 2100 } | |
| 2101 } | |
| 2102 return 0; | |
| 2103 | |
| 2104 Lyes: | |
| 2105 //printf("\tneeds closure\n"); | |
| 2106 return 1; | |
| 2107 } | |
| 2108 #endif | |
| 2109 | |
| 2110 /****************************** FuncAliasDeclaration ************************/ | |
| 2111 | |
| 2112 // Used as a way to import a set of functions from another scope into this one. | |
| 2113 | |
| 2114 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
| 2115 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
| 2116 (enum STC)funcalias->storage_class, funcalias->type) | |
| 2117 { | |
| 2118 assert(funcalias != this); | |
| 2119 this->funcalias = funcalias; | |
| 2120 } | |
| 2121 | |
| 336 | 2122 const char *FuncAliasDeclaration::kind() |
| 159 | 2123 { |
| 2124 return "function alias"; | |
| 2125 } | |
| 2126 | |
| 2127 | |
| 2128 /****************************** FuncLiteralDeclaration ************************/ | |
| 2129 | |
| 2130 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
| 2131 enum TOK tok, ForeachStatement *fes) | |
| 2132 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
| 2133 { | |
| 2134 char *id; | |
| 2135 | |
| 2136 if (fes) | |
| 2137 id = "__foreachbody"; | |
| 2138 else if (tok == TOKdelegate) | |
| 2139 id = "__dgliteral"; | |
| 2140 else | |
| 2141 id = "__funcliteral"; | |
| 2142 this->ident = Identifier::generateId(id); | |
| 2143 this->tok = tok; | |
| 2144 this->fes = fes; | |
| 2145 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
| 2146 } | |
| 2147 | |
| 2148 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
| 2149 { | |
| 2150 FuncLiteralDeclaration *f; | |
| 2151 | |
| 2152 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 2153 if (s) | |
| 2154 f = (FuncLiteralDeclaration *)s; | |
| 2155 else | |
| 2156 f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); | |
| 2157 FuncDeclaration::syntaxCopy(f); | |
| 2158 return f; | |
| 2159 } | |
| 2160 | |
| 2161 int FuncLiteralDeclaration::isNested() | |
| 2162 { | |
| 2163 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
| 2164 return (tok == TOKdelegate); | |
| 2165 } | |
| 2166 | |
| 336 | 2167 int FuncLiteralDeclaration::isVirtual() |
| 2168 { | |
| 2169 return FALSE; | |
| 2170 } | |
| 2171 | |
| 2172 const char *FuncLiteralDeclaration::kind() | |
| 159 | 2173 { |
| 2174 // GCC requires the (char*) casts | |
| 2175 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
| 2176 } | |
| 2177 | |
| 2178 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2179 { | |
| 2180 static Identifier *idfunc; | |
| 2181 static Identifier *iddel; | |
| 2182 | |
| 2183 if (!idfunc) | |
| 2184 idfunc = new Identifier("function", 0); | |
| 2185 if (!iddel) | |
| 2186 iddel = new Identifier("delegate", 0); | |
| 2187 | |
| 2188 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
| 2189 bodyToCBuffer(buf, hgs); | |
| 2190 } | |
| 2191 | |
| 2192 | |
| 2193 /********************************* CtorDeclaration ****************************/ | |
| 2194 | |
| 2195 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2196 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) | |
| 2197 { | |
| 2198 this->arguments = arguments; | |
| 2199 this->varargs = varargs; | |
| 2200 //printf("CtorDeclaration() %s\n", toChars()); | |
| 2201 } | |
| 2202 | |
| 2203 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2204 { | |
| 2205 CtorDeclaration *f; | |
| 2206 | |
| 2207 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
| 2208 | |
| 2209 f->outId = outId; | |
| 2210 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 2211 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 2212 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 2213 assert(!fthrows); // deprecated | |
| 2214 | |
| 2215 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2216 return f; | |
| 2217 } | |
| 2218 | |
| 2219 | |
| 2220 void CtorDeclaration::semantic(Scope *sc) | |
| 2221 { | |
| 2222 ClassDeclaration *cd; | |
| 2223 Type *tret; | |
| 2224 | |
| 2225 //printf("CtorDeclaration::semantic()\n"); | |
| 2226 if (type) | |
| 2227 return; | |
| 2228 | |
| 2229 sc = sc->push(); | |
| 2230 sc->stc &= ~STCstatic; // not a static constructor | |
| 2231 | |
| 2232 parent = sc->parent; | |
| 2233 Dsymbol *parent = toParent(); | |
| 2234 cd = parent->isClassDeclaration(); | |
| 2235 if (!cd) | |
| 2236 { | |
| 2237 error("constructors are only for class definitions"); | |
|
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2238 fatal(); |
| 159 | 2239 tret = Type::tvoid; |
| 2240 } | |
| 2241 else | |
| 2242 tret = cd->type; //->referenceTo(); | |
| 2243 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 336 | 2244 if (!originalType) |
| 2245 originalType = type; | |
| 159 | 2246 |
| 2247 sc->flags |= SCOPEctor; | |
| 2248 type = type->semantic(loc, sc); | |
| 2249 sc->flags &= ~SCOPEctor; | |
| 2250 | |
| 2251 // Append: | |
| 2252 // return this; | |
| 2253 // to the function body | |
| 2254 if (fbody) | |
| 2255 { Expression *e; | |
| 2256 Statement *s; | |
| 2257 | |
| 2258 e = new ThisExp(0); | |
| 2259 s = new ReturnStatement(0, e); | |
| 2260 fbody = new CompoundStatement(0, fbody, s); | |
| 2261 } | |
| 2262 | |
| 2263 FuncDeclaration::semantic(sc); | |
| 2264 | |
| 2265 sc->pop(); | |
| 2266 | |
| 2267 // See if it's the default constructor | |
| 2268 if (cd && varargs == 0 && Argument::dim(arguments) == 0) | |
| 2269 cd->defaultCtor = this; | |
| 2270 } | |
| 2271 | |
| 336 | 2272 const char *CtorDeclaration::kind() |
| 159 | 2273 { |
| 2274 return "constructor"; | |
| 2275 } | |
| 2276 | |
| 2277 char *CtorDeclaration::toChars() | |
| 2278 { | |
| 2279 return "this"; | |
| 2280 } | |
| 2281 | |
| 2282 int CtorDeclaration::isVirtual() | |
| 2283 { | |
| 2284 return FALSE; | |
| 2285 } | |
| 2286 | |
| 2287 int CtorDeclaration::addPreInvariant() | |
| 2288 { | |
| 2289 return FALSE; | |
| 2290 } | |
| 2291 | |
| 2292 int CtorDeclaration::addPostInvariant() | |
| 2293 { | |
| 2294 return (vthis && global.params.useInvariants); | |
| 2295 } | |
| 2296 | |
| 2297 | |
| 2298 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2299 { | |
| 2300 buf->writestring("this"); | |
| 2301 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2302 bodyToCBuffer(buf, hgs); | |
| 2303 } | |
| 2304 | |
| 2305 /********************************* DtorDeclaration ****************************/ | |
| 2306 | |
| 2307 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
| 2308 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
| 2309 { | |
| 2310 } | |
| 2311 | |
| 2312 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc, Identifier *id) | |
| 2313 : FuncDeclaration(loc, endloc, id, STCundefined, NULL) | |
| 2314 { | |
| 2315 } | |
| 2316 | |
| 2317 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2318 { | |
| 2319 assert(!s); | |
| 2320 DtorDeclaration *dd = new DtorDeclaration(loc, endloc, ident); | |
| 2321 return FuncDeclaration::syntaxCopy(dd); | |
| 2322 } | |
| 2323 | |
| 2324 | |
| 2325 void DtorDeclaration::semantic(Scope *sc) | |
| 2326 { | |
| 2327 ClassDeclaration *cd; | |
| 2328 | |
| 2329 parent = sc->parent; | |
| 2330 Dsymbol *parent = toParent(); | |
| 2331 cd = parent->isClassDeclaration(); | |
| 2332 if (!cd) | |
| 2333 { | |
| 2334 error("destructors only are for class definitions"); | |
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2335 fatal(); |
| 159 | 2336 } |
| 2337 else | |
| 2338 cd->dtors.push(this); | |
| 2339 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2340 | |
| 2341 sc = sc->push(); | |
| 2342 sc->stc &= ~STCstatic; // not a static destructor | |
| 2343 sc->linkage = LINKd; | |
| 2344 | |
| 2345 FuncDeclaration::semantic(sc); | |
| 2346 | |
| 2347 sc->pop(); | |
| 2348 } | |
| 2349 | |
| 2350 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
| 2351 { | |
| 2352 return FALSE; // cannot overload destructors | |
| 2353 } | |
| 2354 | |
| 2355 int DtorDeclaration::addPreInvariant() | |
| 2356 { | |
| 2357 return (vthis && global.params.useInvariants); | |
| 2358 } | |
| 2359 | |
| 2360 int DtorDeclaration::addPostInvariant() | |
| 2361 { | |
| 2362 return FALSE; | |
| 2363 } | |
| 2364 | |
| 2365 int DtorDeclaration::isVirtual() | |
| 2366 { | |
| 2367 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
| 2368 * but doing so will require recompiling everything. | |
| 2369 */ | |
| 2370 #if BREAKABI | |
| 2371 return FALSE; | |
| 2372 #else | |
| 2373 return FuncDeclaration::isVirtual(); | |
| 2374 #endif | |
| 2375 } | |
| 2376 | |
| 2377 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2378 { | |
| 2379 if (hgs->hdrgen) | |
| 2380 return; | |
| 2381 buf->writestring("~this()"); | |
| 2382 bodyToCBuffer(buf, hgs); | |
| 2383 } | |
| 2384 | |
| 2385 /********************************* StaticCtorDeclaration ****************************/ | |
| 2386 | |
| 2387 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
| 2388 : FuncDeclaration(loc, endloc, | |
| 2389 Identifier::generateId("_staticCtor"), STCstatic, NULL) | |
| 2390 { | |
| 2391 } | |
| 2392 | |
| 2393 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2394 { | |
| 2395 StaticCtorDeclaration *scd; | |
| 2396 | |
| 2397 assert(!s); | |
| 2398 scd = new StaticCtorDeclaration(loc, endloc); | |
| 2399 return FuncDeclaration::syntaxCopy(scd); | |
| 2400 } | |
| 2401 | |
| 2402 | |
| 2403 void StaticCtorDeclaration::semantic(Scope *sc) | |
| 2404 { | |
| 2405 //printf("StaticCtorDeclaration::semantic()\n"); | |
| 2406 | |
| 2407 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2408 | |
| 336 | 2409 /* If the static ctor appears within a template instantiation, |
| 2410 * it could get called multiple times by the module constructors | |
| 2411 * for different modules. Thus, protect it with a gate. | |
| 2412 */ | |
| 2413 if (inTemplateInstance()) | |
| 2414 { | |
| 2415 /* Add this prefix to the function: | |
| 2416 * static int gate; | |
| 2417 * if (++gate != 1) return; | |
| 2418 * Note that this is not thread safe; should not have threads | |
| 2419 * during static construction. | |
| 2420 */ | |
| 2421 Identifier *id = Lexer::idPool("__gate"); | |
| 2422 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 2423 v->storage_class = STCstatic; | |
| 2424 Statements *sa = new Statements(); | |
| 2425 Statement *s = new DeclarationStatement(0, v); | |
| 2426 sa->push(s); | |
| 2427 Expression *e = new IdentifierExp(0, id); | |
| 2428 e = new AddAssignExp(0, e, new IntegerExp(1)); | |
| 2429 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(1)); | |
| 2430 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); | |
| 2431 sa->push(s); | |
| 2432 if (fbody) | |
| 2433 sa->push(fbody); | |
| 2434 fbody = new CompoundStatement(0, sa); | |
| 2435 } | |
| 2436 | |
| 159 | 2437 FuncDeclaration::semantic(sc); |
| 2438 | |
| 2439 // We're going to need ModuleInfo | |
| 2440 Module *m = getModule(); | |
| 2441 if (!m) | |
| 2442 m = sc->module; | |
| 2443 if (m) | |
| 2444 { m->needmoduleinfo = 1; | |
| 2445 #ifdef IN_GCC | |
| 2446 m->strictlyneedmoduleinfo = 1; | |
| 2447 #endif | |
| 2448 } | |
| 2449 } | |
| 2450 | |
| 2451 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
| 2452 { | |
| 2453 return NULL; | |
| 2454 } | |
| 2455 | |
| 2456 int StaticCtorDeclaration::isStaticConstructor() | |
| 2457 { | |
| 2458 return TRUE; | |
| 2459 } | |
| 2460 | |
| 2461 int StaticCtorDeclaration::isVirtual() | |
| 2462 { | |
| 2463 return FALSE; | |
| 2464 } | |
| 2465 | |
| 2466 int StaticCtorDeclaration::addPreInvariant() | |
| 2467 { | |
| 2468 return FALSE; | |
| 2469 } | |
| 2470 | |
| 2471 int StaticCtorDeclaration::addPostInvariant() | |
| 2472 { | |
| 2473 return FALSE; | |
| 2474 } | |
| 2475 | |
| 2476 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2477 { | |
| 2478 if (hgs->hdrgen) | |
| 2479 { buf->writestring("static this();\n"); | |
| 2480 return; | |
| 2481 } | |
| 2482 buf->writestring("static this()"); | |
| 2483 bodyToCBuffer(buf, hgs); | |
| 2484 } | |
| 2485 | |
| 2486 /********************************* StaticDtorDeclaration ****************************/ | |
| 2487 | |
| 2488 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
| 2489 : FuncDeclaration(loc, endloc, | |
| 2490 Identifier::generateId("_staticDtor"), STCstatic, NULL) | |
| 2491 { | |
| 336 | 2492 vgate = NULL; |
| 159 | 2493 } |
| 2494 | |
| 2495 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2496 { | |
| 2497 StaticDtorDeclaration *sdd; | |
| 2498 | |
| 2499 assert(!s); | |
| 2500 sdd = new StaticDtorDeclaration(loc, endloc); | |
| 2501 return FuncDeclaration::syntaxCopy(sdd); | |
| 2502 } | |
| 2503 | |
| 2504 | |
| 2505 void StaticDtorDeclaration::semantic(Scope *sc) | |
| 2506 { | |
| 2507 ClassDeclaration *cd; | |
| 2508 Type *tret; | |
| 2509 | |
| 2510 cd = sc->scopesym->isClassDeclaration(); | |
| 2511 if (!cd) | |
| 2512 { | |
| 2513 } | |
| 2514 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2515 | |
| 336 | 2516 /* If the static ctor appears within a template instantiation, |
| 2517 * it could get called multiple times by the module constructors | |
| 2518 * for different modules. Thus, protect it with a gate. | |
| 2519 */ | |
| 2520 if (inTemplateInstance()) | |
| 2521 { | |
| 2522 /* Add this prefix to the function: | |
| 2523 * static int gate; | |
| 2524 * if (--gate != 0) return; | |
| 2525 * Increment gate during constructor execution. | |
| 2526 * Note that this is not thread safe; should not have threads | |
| 2527 * during static destruction. | |
| 2528 */ | |
| 2529 Identifier *id = Lexer::idPool("__gate"); | |
| 2530 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 2531 v->storage_class = STCstatic; | |
| 2532 Statements *sa = new Statements(); | |
| 2533 Statement *s = new DeclarationStatement(0, v); | |
| 2534 sa->push(s); | |
| 2535 Expression *e = new IdentifierExp(0, id); | |
| 2536 e = new AddAssignExp(0, e, new IntegerExp(-1)); | |
| 2537 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(1)); | |
| 2538 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); | |
| 2539 sa->push(s); | |
| 2540 if (fbody) | |
| 2541 sa->push(fbody); | |
| 2542 fbody = new CompoundStatement(0, sa); | |
| 2543 vgate = v; | |
| 2544 } | |
| 2545 | |
| 159 | 2546 FuncDeclaration::semantic(sc); |
| 2547 | |
| 2548 // We're going to need ModuleInfo | |
| 2549 Module *m = getModule(); | |
| 2550 if (!m) | |
| 2551 m = sc->module; | |
| 2552 if (m) | |
| 2553 { m->needmoduleinfo = 1; | |
| 2554 #ifdef IN_GCC | |
| 2555 m->strictlyneedmoduleinfo = 1; | |
| 2556 #endif | |
| 2557 } | |
| 2558 } | |
| 2559 | |
| 2560 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
| 2561 { | |
| 2562 return NULL; | |
| 2563 } | |
| 2564 | |
| 2565 int StaticDtorDeclaration::isStaticDestructor() | |
| 2566 { | |
| 2567 return TRUE; | |
| 2568 } | |
| 2569 | |
| 2570 int StaticDtorDeclaration::isVirtual() | |
| 2571 { | |
| 2572 return FALSE; | |
| 2573 } | |
| 2574 | |
| 2575 int StaticDtorDeclaration::addPreInvariant() | |
| 2576 { | |
| 2577 return FALSE; | |
| 2578 } | |
| 2579 | |
| 2580 int StaticDtorDeclaration::addPostInvariant() | |
| 2581 { | |
| 2582 return FALSE; | |
| 2583 } | |
| 2584 | |
| 2585 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2586 { | |
| 2587 if (hgs->hdrgen) | |
| 2588 return; | |
| 2589 buf->writestring("static ~this()"); | |
| 2590 bodyToCBuffer(buf, hgs); | |
| 2591 } | |
| 2592 | |
| 2593 /********************************* InvariantDeclaration ****************************/ | |
| 2594 | |
| 2595 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
| 2596 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
| 2597 { | |
| 2598 } | |
| 2599 | |
| 2600 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
| 2601 { | |
| 2602 InvariantDeclaration *id; | |
| 2603 | |
| 2604 assert(!s); | |
| 2605 id = new InvariantDeclaration(loc, endloc); | |
| 2606 FuncDeclaration::syntaxCopy(id); | |
| 2607 return id; | |
| 2608 } | |
| 2609 | |
| 2610 | |
| 2611 void InvariantDeclaration::semantic(Scope *sc) | |
| 2612 { | |
| 2613 AggregateDeclaration *ad; | |
| 2614 Type *tret; | |
| 2615 | |
| 2616 parent = sc->parent; | |
| 2617 Dsymbol *parent = toParent(); | |
| 2618 ad = parent->isAggregateDeclaration(); | |
| 2619 if (!ad) | |
| 2620 { | |
| 2621 error("invariants only are for struct/union/class definitions"); | |
| 2622 return; | |
| 2623 } | |
| 2624 else if (ad->inv && ad->inv != this) | |
| 2625 { | |
| 2626 error("more than one invariant for %s", ad->toChars()); | |
| 2627 } | |
| 2628 ad->inv = this; | |
| 2629 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2630 | |
| 2631 sc = sc->push(); | |
| 2632 sc->stc &= ~STCstatic; // not a static invariant | |
| 2633 sc->incontract++; | |
| 2634 sc->linkage = LINKd; | |
| 2635 | |
| 2636 FuncDeclaration::semantic(sc); | |
| 2637 | |
| 2638 sc->pop(); | |
| 2639 } | |
| 2640 | |
| 2641 int InvariantDeclaration::isVirtual() | |
| 2642 { | |
| 2643 return FALSE; | |
| 2644 } | |
| 2645 | |
| 2646 int InvariantDeclaration::addPreInvariant() | |
| 2647 { | |
| 2648 return FALSE; | |
| 2649 } | |
| 2650 | |
| 2651 int InvariantDeclaration::addPostInvariant() | |
| 2652 { | |
| 2653 return FALSE; | |
| 2654 } | |
| 2655 | |
| 2656 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2657 { | |
| 2658 if (hgs->hdrgen) | |
| 2659 return; | |
| 2660 buf->writestring("invariant"); | |
| 2661 bodyToCBuffer(buf, hgs); | |
| 2662 } | |
| 2663 | |
| 2664 | |
| 2665 /********************************* UnitTestDeclaration ****************************/ | |
| 2666 | |
| 2667 /******************************* | |
| 2668 * Generate unique unittest function Id so we can have multiple | |
| 2669 * instances per module. | |
| 2670 */ | |
| 2671 | |
| 2672 static Identifier *unitTestId() | |
| 2673 { | |
| 336 | 2674 return Lexer::uniqueId("__unittest"); |
| 159 | 2675 } |
| 2676 | |
| 2677 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
| 2678 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
| 2679 { | |
| 2680 } | |
| 2681 | |
| 2682 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
| 2683 { | |
| 2684 UnitTestDeclaration *utd; | |
| 2685 | |
| 2686 assert(!s); | |
| 2687 utd = new UnitTestDeclaration(loc, endloc); | |
| 2688 return FuncDeclaration::syntaxCopy(utd); | |
| 2689 } | |
| 2690 | |
| 2691 | |
| 2692 void UnitTestDeclaration::semantic(Scope *sc) | |
| 2693 { | |
| 2694 if (global.params.useUnitTests) | |
| 2695 { | |
| 2696 Type *tret; | |
| 2697 | |
| 2698 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2699 FuncDeclaration::semantic(sc); | |
| 2700 } | |
| 2701 | |
| 2702 // We're going to need ModuleInfo even if the unit tests are not | |
| 2703 // compiled in, because other modules may import this module and refer | |
| 2704 // to this ModuleInfo. | |
| 2705 Module *m = getModule(); | |
| 2706 if (!m) | |
| 2707 m = sc->module; | |
| 2708 if (m) | |
| 2709 m->needmoduleinfo = 1; | |
| 2710 } | |
| 2711 | |
| 2712 AggregateDeclaration *UnitTestDeclaration::isThis() | |
| 2713 { | |
| 2714 return NULL; | |
| 2715 } | |
| 2716 | |
| 2717 int UnitTestDeclaration::isVirtual() | |
| 2718 { | |
| 2719 return FALSE; | |
| 2720 } | |
| 2721 | |
| 2722 int UnitTestDeclaration::addPreInvariant() | |
| 2723 { | |
| 2724 return FALSE; | |
| 2725 } | |
| 2726 | |
| 2727 int UnitTestDeclaration::addPostInvariant() | |
| 2728 { | |
| 2729 return FALSE; | |
| 2730 } | |
| 2731 | |
| 2732 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2733 { | |
| 2734 if (hgs->hdrgen) | |
| 2735 return; | |
| 2736 buf->writestring("unittest"); | |
| 2737 bodyToCBuffer(buf, hgs); | |
| 2738 } | |
| 2739 | |
| 2740 /********************************* NewDeclaration ****************************/ | |
| 2741 | |
| 2742 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2743 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) | |
| 2744 { | |
| 2745 this->arguments = arguments; | |
| 2746 this->varargs = varargs; | |
| 2747 } | |
| 2748 | |
| 2749 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
| 2750 { | |
| 2751 NewDeclaration *f; | |
| 2752 | |
| 2753 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
| 2754 | |
| 2755 FuncDeclaration::syntaxCopy(f); | |
| 2756 | |
| 2757 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2758 | |
| 2759 return f; | |
| 2760 } | |
| 2761 | |
| 2762 | |
| 2763 void NewDeclaration::semantic(Scope *sc) | |
| 2764 { | |
| 2765 ClassDeclaration *cd; | |
| 2766 Type *tret; | |
| 2767 | |
| 2768 //printf("NewDeclaration::semantic()\n"); | |
| 2769 | |
| 2770 parent = sc->parent; | |
| 2771 Dsymbol *parent = toParent(); | |
| 2772 cd = parent->isClassDeclaration(); | |
| 2773 if (!cd && !parent->isStructDeclaration()) | |
| 2774 { | |
| 2775 error("new allocators only are for class or struct definitions"); | |
| 2776 } | |
| 2777 tret = Type::tvoid->pointerTo(); | |
| 2778 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2779 | |
| 2780 type = type->semantic(loc, sc); | |
| 2781 assert(type->ty == Tfunction); | |
| 2782 | |
| 2783 // Check that there is at least one argument of type uint | |
| 2784 TypeFunction *tf = (TypeFunction *)type; | |
| 2785 if (Argument::dim(tf->parameters) < 1) | |
| 2786 { | |
| 2787 error("at least one argument of type uint expected"); | |
| 2788 } | |
| 2789 else | |
| 2790 { | |
| 2791 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2792 if (!a->type->equals(Type::tuns32)) | |
| 2793 error("first argument must be type uint, not %s", a->type->toChars()); | |
| 2794 } | |
| 2795 | |
| 2796 FuncDeclaration::semantic(sc); | |
| 2797 } | |
| 2798 | |
| 336 | 2799 const char *NewDeclaration::kind() |
| 159 | 2800 { |
| 2801 return "allocator"; | |
| 2802 } | |
| 2803 | |
| 2804 int NewDeclaration::isVirtual() | |
| 2805 { | |
| 2806 return FALSE; | |
| 2807 } | |
| 2808 | |
| 2809 int NewDeclaration::addPreInvariant() | |
| 2810 { | |
| 2811 return FALSE; | |
| 2812 } | |
| 2813 | |
| 2814 int NewDeclaration::addPostInvariant() | |
| 2815 { | |
| 2816 return FALSE; | |
| 2817 } | |
| 2818 | |
| 2819 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2820 { | |
| 2821 buf->writestring("new"); | |
| 2822 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2823 bodyToCBuffer(buf, hgs); | |
| 2824 } | |
| 2825 | |
| 2826 | |
| 2827 /********************************* DeleteDeclaration ****************************/ | |
| 2828 | |
| 2829 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments) | |
| 2830 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) | |
| 2831 { | |
| 2832 this->arguments = arguments; | |
| 2833 } | |
| 2834 | |
| 2835 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
| 2836 { | |
| 2837 DeleteDeclaration *f; | |
| 2838 | |
| 2839 f = new DeleteDeclaration(loc, endloc, NULL); | |
| 2840 | |
| 2841 FuncDeclaration::syntaxCopy(f); | |
| 2842 | |
| 2843 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2844 | |
| 2845 return f; | |
| 2846 } | |
| 2847 | |
| 2848 | |
| 2849 void DeleteDeclaration::semantic(Scope *sc) | |
| 2850 { | |
| 2851 ClassDeclaration *cd; | |
| 2852 | |
| 2853 //printf("DeleteDeclaration::semantic()\n"); | |
| 2854 | |
| 2855 parent = sc->parent; | |
| 2856 Dsymbol *parent = toParent(); | |
| 2857 cd = parent->isClassDeclaration(); | |
| 2858 if (!cd && !parent->isStructDeclaration()) | |
| 2859 { | |
| 2860 error("new allocators only are for class or struct definitions"); | |
| 2861 } | |
| 2862 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
| 2863 | |
| 2864 type = type->semantic(loc, sc); | |
| 2865 assert(type->ty == Tfunction); | |
| 2866 | |
| 2867 // Check that there is only one argument of type void* | |
| 2868 TypeFunction *tf = (TypeFunction *)type; | |
| 2869 if (Argument::dim(tf->parameters) != 1) | |
| 2870 { | |
| 2871 error("one argument of type void* expected"); | |
| 2872 } | |
| 2873 else | |
| 2874 { | |
| 2875 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2876 if (!a->type->equals(Type::tvoid->pointerTo())) | |
| 2877 error("one argument of type void* expected, not %s", a->type->toChars()); | |
| 2878 } | |
| 2879 | |
| 2880 FuncDeclaration::semantic(sc); | |
| 2881 } | |
| 2882 | |
| 336 | 2883 const char *DeleteDeclaration::kind() |
| 159 | 2884 { |
| 2885 return "deallocator"; | |
| 2886 } | |
| 2887 | |
| 2888 int DeleteDeclaration::isDelete() | |
| 2889 { | |
| 2890 return TRUE; | |
| 2891 } | |
| 2892 | |
| 2893 int DeleteDeclaration::isVirtual() | |
| 2894 { | |
| 2895 return FALSE; | |
| 2896 } | |
| 2897 | |
| 2898 int DeleteDeclaration::addPreInvariant() | |
| 2899 { | |
| 2900 return FALSE; | |
| 2901 } | |
| 2902 | |
| 2903 int DeleteDeclaration::addPostInvariant() | |
| 2904 { | |
| 2905 return FALSE; | |
| 2906 } | |
| 2907 | |
| 2908 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2909 { | |
| 2910 buf->writestring("delete"); | |
| 2911 Argument::argsToCBuffer(buf, hgs, arguments, 0); | |
| 2912 bodyToCBuffer(buf, hgs); | |
| 2913 } | |
| 2914 | |
| 2915 | |
| 2916 | |
| 2917 |