Mercurial > projects > ldc
annotate dmd/func.c @ 1141:f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
implement the synchronized storage class for functions.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Tue, 24 Mar 2009 21:18:18 +0100 |
| parents | eeb8b95ea92e |
| children | b28a57f4b530 |
| 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; | |
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71 /* The type given for "infer the return type" is a TypeFunction with |
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72 * NULL for the return type. |
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73 */ |
| 159 | 74 inferRetType = (type && type->nextOf() == NULL); |
| 75 scope = NULL; | |
| 76 hasReturnExp = 0; | |
| 77 nrvo_can = 1; | |
| 78 nrvo_var = NULL; | |
| 79 shidden = NULL; | |
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80 |
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81 // LDC |
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82 isArrayOp = false; |
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83 allowInlining = false; |
| 159 | 84 } |
| 85 | |
| 86 Dsymbol *FuncDeclaration::syntaxCopy(Dsymbol *s) | |
| 87 { | |
| 88 FuncDeclaration *f; | |
| 89 | |
| 90 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 91 if (s) | |
| 92 f = (FuncDeclaration *)s; | |
| 93 else | |
| 94 f = new FuncDeclaration(loc, endloc, ident, (enum STC) storage_class, type->syntaxCopy()); | |
| 95 f->outId = outId; | |
| 96 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 97 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 98 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 99 assert(!fthrows); // deprecated | |
|
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100 |
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101 // LDC |
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102 f->intrinsicName = intrinsicName; |
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103 |
| 159 | 104 return f; |
| 105 } | |
| 106 | |
| 107 | |
| 108 // Do the semantic analysis on the external interface to the function. | |
| 109 | |
| 110 void FuncDeclaration::semantic(Scope *sc) | |
| 111 { TypeFunction *f; | |
| 112 StructDeclaration *sd; | |
| 113 ClassDeclaration *cd; | |
| 114 InterfaceDeclaration *id; | |
| 336 | 115 Dsymbol *pd; |
| 159 | 116 |
| 117 #if 0 | |
| 118 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
| 119 if (isFuncLiteralDeclaration()) | |
| 120 printf("\tFuncLiteralDeclaration()\n"); | |
| 121 printf("sc->parent = %s\n", sc->parent->toChars()); | |
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122 printf("type: %p, %s\n", type, type->toChars()); |
| 159 | 123 #endif |
| 124 | |
| 125 if (type->nextOf()) | |
| 126 type = type->semantic(loc, sc); | |
| 127 //type->print(); | |
| 128 if (type->ty != Tfunction) | |
| 129 { | |
| 130 error("%s must be a function", toChars()); | |
| 131 return; | |
| 132 } | |
| 133 f = (TypeFunction *)(type); | |
| 134 size_t nparams = Argument::dim(f->parameters); | |
| 135 | |
| 136 linkage = sc->linkage; | |
| 137 // if (!parent) | |
| 138 { | |
| 139 //parent = sc->scopesym; | |
| 140 parent = sc->parent; | |
| 141 } | |
| 142 protection = sc->protection; | |
| 143 storage_class |= sc->stc; | |
| 144 //printf("function storage_class = x%x\n", storage_class); | |
| 145 Dsymbol *parent = toParent(); | |
| 146 | |
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147 if (ident == Id::ctor && !isCtorDeclaration()) |
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148 error("_ctor is reserved for constructors"); |
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149 |
| 159 | 150 if (isConst() || isAuto() || isScope()) |
| 151 error("functions cannot be const or auto"); | |
| 152 | |
| 153 if (isAbstract() && !isVirtual()) | |
| 154 error("non-virtual functions cannot be abstract"); | |
| 155 | |
| 156 if (isAbstract() && isFinal()) | |
| 157 error("cannot be both final and abstract"); | |
| 158 #if 0 | |
| 159 if (isAbstract() && fbody) | |
| 160 error("abstract functions cannot have bodies"); | |
| 161 #endif | |
| 162 | |
| 163 #if 0 | |
| 164 if (isStaticConstructor() || isStaticDestructor()) | |
| 165 { | |
| 166 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
| 167 error("static constructors / destructors must be static void"); | |
| 168 if (f->arguments && f->arguments->dim) | |
| 169 error("static constructors / destructors must have empty parameter list"); | |
| 170 // BUG: check for invalid storage classes | |
| 171 } | |
| 172 #endif | |
| 173 | |
| 174 #ifdef IN_GCC | |
| 175 AggregateDeclaration *ad; | |
| 176 | |
| 177 ad = parent->isAggregateDeclaration(); | |
| 178 if (ad) | |
| 179 ad->methods.push(this); | |
| 180 #endif | |
| 181 sd = parent->isStructDeclaration(); | |
| 182 if (sd) | |
| 183 { | |
| 184 // Verify no constructors, destructors, etc. | |
| 185 if (isCtorDeclaration() || | |
| 186 isDtorDeclaration() | |
| 187 //|| isInvariantDeclaration() | |
| 188 //|| isUnitTestDeclaration() | |
| 189 ) | |
| 190 { | |
| 191 error("special member functions not allowed for %ss", sd->kind()); | |
| 192 } | |
| 193 | |
| 194 #if 0 | |
| 195 if (!sd->inv) | |
| 196 sd->inv = isInvariantDeclaration(); | |
| 197 | |
| 198 if (!sd->aggNew) | |
| 199 sd->aggNew = isNewDeclaration(); | |
| 200 | |
| 201 if (isDelete()) | |
| 202 { | |
| 203 if (sd->aggDelete) | |
| 204 error("multiple delete's for struct %s", sd->toChars()); | |
| 205 sd->aggDelete = (DeleteDeclaration *)(this); | |
| 206 } | |
| 207 #endif | |
| 208 } | |
| 209 | |
| 210 id = parent->isInterfaceDeclaration(); | |
| 211 if (id) | |
| 212 { | |
| 213 storage_class |= STCabstract; | |
| 214 | |
| 215 if (isCtorDeclaration() || | |
| 216 isDtorDeclaration() || | |
| 217 isInvariantDeclaration() || | |
| 218 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 219 error("special function not allowed in interface %s", id->toChars()); | |
| 220 if (fbody) | |
| 221 error("function body is not abstract in interface %s", id->toChars()); | |
| 222 } | |
| 223 | |
| 336 | 224 /* Template member functions aren't virtual: |
| 225 * interface TestInterface { void tpl(T)(); } | |
| 226 * and so won't work in interfaces | |
| 227 */ | |
| 228 if ((pd = toParent()) != NULL && | |
| 229 pd->isTemplateInstance() && | |
| 230 (pd = toParent2()) != NULL && | |
| 231 (id = pd->isInterfaceDeclaration()) != NULL) | |
| 232 { | |
| 233 error("template member function not allowed in interface %s", id->toChars()); | |
| 234 } | |
| 235 | |
| 159 | 236 cd = parent->isClassDeclaration(); |
| 237 if (cd) | |
| 238 { int vi; | |
| 239 CtorDeclaration *ctor; | |
| 240 DtorDeclaration *dtor; | |
| 241 InvariantDeclaration *inv; | |
| 242 | |
| 243 if (isCtorDeclaration()) | |
| 244 { | |
| 245 // ctor = (CtorDeclaration *)this; | |
| 246 // if (!cd->ctor) | |
| 247 // cd->ctor = ctor; | |
| 248 return; | |
| 249 } | |
| 250 | |
| 251 #if 0 | |
| 252 dtor = isDtorDeclaration(); | |
| 253 if (dtor) | |
| 254 { | |
| 255 if (cd->dtor) | |
| 256 error("multiple destructors for class %s", cd->toChars()); | |
| 257 cd->dtor = dtor; | |
| 258 } | |
| 259 | |
| 260 inv = isInvariantDeclaration(); | |
| 261 if (inv) | |
| 262 { | |
| 263 cd->inv = inv; | |
| 264 } | |
| 265 | |
| 266 if (isNewDeclaration()) | |
| 267 { | |
| 268 if (!cd->aggNew) | |
| 269 cd->aggNew = (NewDeclaration *)(this); | |
| 270 } | |
| 271 | |
| 272 if (isDelete()) | |
| 273 { | |
| 274 if (cd->aggDelete) | |
| 275 error("multiple delete's for class %s", cd->toChars()); | |
| 276 cd->aggDelete = (DeleteDeclaration *)(this); | |
| 277 } | |
| 278 #endif | |
| 279 | |
| 280 if (storage_class & STCabstract) | |
| 281 cd->isabstract = 1; | |
| 282 | |
| 283 // if static function, do not put in vtbl[] | |
| 284 if (!isVirtual()) | |
| 285 { | |
| 286 //printf("\tnot virtual\n"); | |
| 287 goto Ldone; | |
| 288 } | |
| 289 | |
| 290 // Find index of existing function in vtbl[] to override | |
| 291 vi = findVtblIndex(&cd->vtbl, cd->baseClass ? cd->baseClass->vtbl.dim : 0); | |
| 292 switch (vi) | |
| 293 { | |
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294 case -1: |
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295 /* Didn't find one, so |
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296 * This is an 'introducing' function which gets a new |
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297 * slot in the vtbl[]. |
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298 */ |
| 159 | 299 |
| 300 // Verify this doesn't override previous final function | |
| 301 if (cd->baseClass) | |
| 302 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
| 303 if (s) | |
| 304 { | |
| 305 FuncDeclaration *f = s->isFuncDeclaration(); | |
| 306 f = f->overloadExactMatch(type); | |
| 307 if (f && f->isFinal() && f->prot() != PROTprivate) | |
| 308 error("cannot override final function %s", f->toPrettyChars()); | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 if (isFinal()) | |
| 313 { | |
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314 if (isOverride()) |
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315 error("does not override any function"); |
| 159 | 316 cd->vtblFinal.push(this); |
| 317 } | |
| 318 else | |
| 319 { | |
| 320 // Append to end of vtbl[] | |
| 321 //printf("\tintroducing function\n"); | |
| 322 introducing = 1; | |
| 323 vi = cd->vtbl.dim; | |
| 324 cd->vtbl.push(this); | |
| 325 vtblIndex = vi; | |
| 326 } | |
| 327 break; | |
| 328 | |
| 329 case -2: // can't determine because of fwd refs | |
| 330 cd->sizeok = 2; // can't finish due to forward reference | |
| 331 return; | |
| 332 | |
| 333 default: | |
| 334 { FuncDeclaration *fdv = (FuncDeclaration *)cd->vtbl.data[vi]; | |
| 335 // This function is covariant with fdv | |
| 336 if (fdv->isFinal()) | |
| 337 error("cannot override final function %s", fdv->toPrettyChars()); | |
| 338 | |
| 336 | 339 #if DMDV2 |
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340 if (!isOverride()) |
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341 warning(loc, "overrides base class function %s, but is not marked with 'override'", fdv->toPrettyChars()); |
| 159 | 342 #endif |
| 343 | |
| 344 if (fdv->toParent() == parent) | |
| 345 { | |
| 346 // If both are mixins, then error. | |
| 347 // If either is not, the one that is not overrides | |
| 348 // the other. | |
| 349 if (fdv->parent->isClassDeclaration()) | |
| 350 break; | |
| 351 if (!this->parent->isClassDeclaration() | |
| 352 #if !BREAKABI | |
| 353 && !isDtorDeclaration() | |
| 354 #endif | |
| 336 | 355 #if DMDV2 |
| 159 | 356 && !isPostBlitDeclaration() |
| 357 #endif | |
| 358 ) | |
| 359 error("multiple overrides of same function"); | |
| 360 } | |
| 361 cd->vtbl.data[vi] = (void *)this; | |
| 362 vtblIndex = vi; | |
| 363 | |
| 364 /* This works by whenever this function is called, | |
| 365 * it actually returns tintro, which gets dynamically | |
| 366 * cast to type. But we know that tintro is a base | |
| 367 * of type, so we could optimize it by not doing a | |
| 368 * dynamic cast, but just subtracting the isBaseOf() | |
| 369 * offset if the value is != null. | |
| 370 */ | |
| 371 | |
| 372 if (fdv->tintro) | |
| 373 tintro = fdv->tintro; | |
| 374 else if (!type->equals(fdv->type)) | |
| 375 { | |
| 376 /* Only need to have a tintro if the vptr | |
| 377 * offsets differ | |
| 378 */ | |
| 379 int offset; | |
| 380 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 381 { | |
| 382 tintro = fdv->type; | |
| 383 } | |
| 384 } | |
| 385 break; | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 /* Go through all the interface bases. | |
| 390 * If this function is covariant with any members of those interface | |
| 391 * functions, set the tintro. | |
| 392 */ | |
| 393 for (int i = 0; i < cd->interfaces_dim; i++) | |
| 394 { | |
| 395 #if 1 | |
| 396 BaseClass *b = cd->interfaces[i]; | |
| 397 vi = findVtblIndex(&b->base->vtbl, b->base->vtbl.dim); | |
| 398 switch (vi) | |
| 399 { | |
| 400 case -1: | |
| 401 break; | |
| 402 | |
| 403 case -2: | |
| 404 cd->sizeok = 2; // can't finish due to forward reference | |
| 405 return; | |
| 406 | |
| 407 default: | |
| 408 { FuncDeclaration *fdv = (FuncDeclaration *)b->base->vtbl.data[vi]; | |
| 409 Type *ti = NULL; | |
| 410 | |
| 411 if (fdv->tintro) | |
| 412 ti = fdv->tintro; | |
| 413 else if (!type->equals(fdv->type)) | |
| 414 { | |
| 415 /* Only need to have a tintro if the vptr | |
| 416 * offsets differ | |
| 417 */ | |
| 418 int offset; | |
| 419 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 420 { | |
| 421 ti = fdv->type; | |
| 422 #if 0 | |
| 423 if (offset) | |
| 424 ti = fdv->type; | |
| 425 else if (type->nextOf()->ty == Tclass) | |
| 426 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 427 if (cdn && cdn->sizeok != 1) | |
| 428 ti = fdv->type; | |
| 429 } | |
| 430 #endif | |
| 431 } | |
| 432 } | |
| 433 if (ti) | |
| 434 { | |
| 435 if (tintro && !tintro->equals(ti)) | |
| 436 { | |
| 437 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 438 } | |
| 439 tintro = ti; | |
| 440 } | |
| 441 goto L2; | |
| 442 } | |
| 443 } | |
| 444 #else | |
| 445 BaseClass *b = cd->interfaces[i]; | |
| 446 for (vi = 0; vi < b->base->vtbl.dim; vi++) | |
| 447 { | |
| 448 Dsymbol *s = (Dsymbol *)b->base->vtbl.data[vi]; | |
| 449 //printf("interface %d vtbl[%d] %p %s\n", i, vi, s, s->toChars()); | |
| 450 FuncDeclaration *fdv = s->isFuncDeclaration(); | |
| 451 if (fdv && fdv->ident == ident) | |
| 452 { | |
| 453 int cov = type->covariant(fdv->type); | |
| 454 //printf("\tcov = %d\n", cov); | |
| 455 if (cov == 2) | |
| 456 { | |
| 457 //type->print(); | |
| 458 //fdv->type->print(); | |
| 459 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 460 error("of type %s overrides but is not covariant with %s of type %s", | |
| 461 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 462 } | |
| 463 if (cov == 1) | |
| 464 { Type *ti = NULL; | |
| 465 | |
| 466 if (fdv->tintro) | |
| 467 ti = fdv->tintro; | |
| 468 else if (!type->equals(fdv->type)) | |
| 469 { | |
| 470 /* Only need to have a tintro if the vptr | |
| 471 * offsets differ | |
| 472 */ | |
| 473 int offset; | |
| 474 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 475 { | |
| 476 ti = fdv->type; | |
| 477 #if 0 | |
| 478 if (offset) | |
| 479 ti = fdv->type; | |
| 480 else if (type->nextOf()->ty == Tclass) | |
| 481 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 482 if (cdn && cdn->sizeok != 1) | |
| 483 ti = fdv->type; | |
| 484 } | |
| 485 #endif | |
| 486 } | |
| 487 } | |
| 488 if (ti) | |
| 489 { | |
| 490 if (tintro && !tintro->equals(ti)) | |
| 491 { | |
| 492 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 493 } | |
| 494 tintro = ti; | |
| 495 } | |
| 496 goto L2; | |
| 497 } | |
| 498 if (cov == 3) | |
| 499 { | |
| 500 cd->sizeok = 2; // can't finish due to forward reference | |
| 501 return; | |
| 502 } | |
| 503 } | |
| 504 } | |
| 505 #endif | |
| 506 } | |
| 507 | |
| 508 if (introducing && isOverride()) | |
| 509 { | |
| 510 error("does not override any function"); | |
| 511 } | |
| 512 | |
| 513 L2: ; | |
| 514 } | |
| 515 else if (isOverride() && !parent->isTemplateInstance()) | |
| 516 error("override only applies to class member functions"); | |
| 517 | |
| 518 /* Do not allow template instances to add virtual functions | |
| 519 * to a class. | |
| 520 */ | |
| 521 if (isVirtual()) | |
| 522 { | |
| 523 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 524 if (ti) | |
| 525 { | |
| 526 // Take care of nested templates | |
| 527 while (1) | |
| 528 { | |
| 529 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 530 if (!ti2) | |
| 531 break; | |
| 532 ti = ti2; | |
| 533 } | |
| 534 | |
| 535 // If it's a member template | |
| 536 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
| 537 if (cd) | |
| 538 { | |
| 539 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
| 540 } | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 if (isMain()) | |
| 545 { | |
| 546 // Check parameters to see if they are either () or (char[][] args) | |
| 547 switch (nparams) | |
| 548 { | |
| 549 case 0: | |
| 550 break; | |
| 551 | |
| 552 case 1: | |
| 553 { | |
| 554 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 555 if (arg0->type->ty != Tarray || | |
| 556 arg0->type->nextOf()->ty != Tarray || | |
| 557 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
| 558 arg0->storageClass & (STCout | STCref | STClazy)) | |
| 559 goto Lmainerr; | |
| 560 break; | |
| 561 } | |
| 562 | |
| 563 default: | |
| 564 goto Lmainerr; | |
| 565 } | |
| 566 | |
| 567 if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
| 568 error("must return int or void, not %s", f->nextOf()->toChars()); | |
| 569 if (f->varargs) | |
| 570 { | |
| 571 Lmainerr: | |
| 572 error("parameters must be main() or main(char[][] args)"); | |
| 573 } | |
| 574 } | |
| 575 | |
| 576 if (ident == Id::assign && (sd || cd)) | |
| 577 { // Disallow identity assignment operator. | |
| 578 | |
| 579 // opAssign(...) | |
| 580 if (nparams == 0) | |
| 581 { if (f->varargs == 1) | |
| 582 goto Lassignerr; | |
| 583 } | |
| 584 else | |
| 585 { | |
| 586 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 587 Type *t0 = arg0->type->toBasetype(); | |
| 588 Type *tb = sd ? sd->type : cd->type; | |
| 589 if (arg0->type->implicitConvTo(tb) || | |
| 590 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
| 591 ) | |
| 592 { | |
| 593 if (nparams == 1) | |
| 594 goto Lassignerr; | |
| 595 Argument *arg1 = Argument::getNth(f->parameters, 1); | |
| 596 if (arg1->defaultArg) | |
| 597 goto Lassignerr; | |
| 598 } | |
| 599 } | |
| 600 } | |
| 601 | |
| 602 Ldone: | |
| 603 /* Save scope for possible later use (if we need the | |
| 604 * function internals) | |
| 605 */ | |
| 606 scope = new Scope(*sc); | |
| 607 scope->setNoFree(); | |
| 608 return; | |
| 609 | |
| 610 Lassignerr: | |
| 611 error("identity assignment operator overload is illegal"); | |
| 612 } | |
| 613 | |
| 614 void FuncDeclaration::semantic2(Scope *sc) | |
| 615 { | |
| 616 } | |
| 617 | |
| 618 // Do the semantic analysis on the internals of the function. | |
| 619 | |
| 620 void FuncDeclaration::semantic3(Scope *sc) | |
| 621 { TypeFunction *f; | |
| 622 AggregateDeclaration *ad; | |
| 623 VarDeclaration *argptr = NULL; | |
| 624 VarDeclaration *_arguments = NULL; | |
| 625 | |
| 626 if (!parent) | |
| 627 { | |
| 628 if (global.errors) | |
| 629 return; | |
| 630 //printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
| 631 assert(0); | |
| 632 } | |
| 633 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p, loc = %s)\n", parent->toChars(), toChars(), sc, loc.toChars()); | |
| 634 //fflush(stdout); | |
| 635 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 636 //printf("\tlinkage = %d\n", sc->linkage); | |
| 637 | |
| 638 //printf(" sc->incontract = %d\n", sc->incontract); | |
| 639 if (semanticRun) | |
| 640 return; | |
| 641 semanticRun = 1; | |
| 642 | |
| 643 if (!type || type->ty != Tfunction) | |
| 644 return; | |
| 645 f = (TypeFunction *)(type); | |
| 646 size_t nparams = Argument::dim(f->parameters); | |
| 647 | |
| 648 // Check the 'throws' clause | |
| 649 if (fthrows) | |
|
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650 { |
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651 for (int i = 0; i < fthrows->dim; i++) |
| 159 | 652 { |
| 653 Type *t = (Type *)fthrows->data[i]; | |
| 654 | |
| 655 t = t->semantic(loc, sc); | |
| 656 if (!t->isClassHandle()) | |
| 657 error("can only throw classes, not %s", t->toChars()); | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 if (fbody || frequire) | |
| 662 { | |
| 663 /* Symbol table into which we place parameters and nested functions, | |
| 664 * solely to diagnose name collisions. | |
| 665 */ | |
| 666 localsymtab = new DsymbolTable(); | |
| 667 | |
| 668 // Establish function scope | |
| 669 ScopeDsymbol *ss = new ScopeDsymbol(); | |
| 670 ss->parent = sc->scopesym; | |
| 671 Scope *sc2 = sc->push(ss); | |
| 672 sc2->func = this; | |
| 673 sc2->parent = this; | |
| 674 sc2->callSuper = 0; | |
| 675 sc2->sbreak = NULL; | |
| 676 sc2->scontinue = NULL; | |
| 677 sc2->sw = NULL; | |
| 678 sc2->fes = fes; | |
| 679 sc2->linkage = LINKd; | |
| 680 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated | STCfinal); | |
| 681 sc2->protection = PROTpublic; | |
| 682 sc2->explicitProtection = 0; | |
| 683 sc2->structalign = 8; | |
| 684 sc2->incontract = 0; | |
|
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685 sc2->enclosingFinally = NULL; |
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686 sc2->enclosingScopeExit = NULL; |
| 159 | 687 sc2->noctor = 0; |
| 688 | |
| 689 // Declare 'this' | |
| 690 ad = isThis(); | |
| 691 if (ad) | |
| 692 { VarDeclaration *v; | |
| 693 | |
| 694 if (isFuncLiteralDeclaration() && isNested()) | |
| 695 { | |
| 696 error("literals cannot be class members"); | |
| 697 return; | |
| 698 } | |
| 699 else | |
| 700 { | |
| 701 assert(!isNested()); // can't be both member and nested | |
| 702 assert(ad->handle); | |
| 703 v = new ThisDeclaration(ad->handle); | |
| 704 v->storage_class |= STCparameter | STCin; | |
| 705 v->semantic(sc2); | |
| 706 if (!sc2->insert(v)) | |
| 707 assert(0); | |
| 708 v->parent = this; | |
| 709 vthis = v; | |
| 710 } | |
| 711 } | |
| 712 else if (isNested()) | |
| 713 { | |
|
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714 /* The 'this' for a nested function is the link to the |
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715 * enclosing function's stack frame. |
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716 * Note that nested functions and member functions are disjoint. |
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717 */ |
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718 VarDeclaration *v = new ThisDeclaration(Type::tvoid->pointerTo()); |
| 159 | 719 v->storage_class |= STCparameter | STCin; |
| 720 v->semantic(sc2); | |
| 721 if (!sc2->insert(v)) | |
| 722 assert(0); | |
| 723 v->parent = this; | |
| 724 vthis = v; | |
| 725 } | |
| 726 | |
| 727 // Declare hidden variable _arguments[] and _argptr | |
| 728 if (f->varargs == 1) | |
| 729 { Type *t; | |
| 730 | |
| 731 if (f->linkage == LINKd) | |
| 732 { // Declare _arguments[] | |
| 733 #if BREAKABI | |
| 734 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
| 735 v_arguments->storage_class = STCparameter | STCin; | |
| 736 v_arguments->semantic(sc2); | |
| 737 sc2->insert(v_arguments); | |
| 738 v_arguments->parent = this; | |
| 739 | |
| 740 t = Type::typeinfo->type->arrayOf(); | |
| 741 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 742 _arguments->semantic(sc2); | |
| 743 sc2->insert(_arguments); | |
| 744 _arguments->parent = this; | |
| 745 #else | |
| 746 t = Type::typeinfo->type->arrayOf(); | |
| 747 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 748 v_arguments->storage_class = STCparameter | STCin; | |
| 749 v_arguments->semantic(sc2); | |
| 750 sc2->insert(v_arguments); | |
| 751 v_arguments->parent = this; | |
| 752 #endif | |
| 753 } | |
| 754 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
| 755 { // Declare _argptr | |
| 756 #if IN_GCC | |
| 757 t = d_gcc_builtin_va_list_d_type; | |
| 758 #else | |
| 759 t = Type::tvoid->pointerTo(); | |
| 760 #endif | |
| 761 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
| 762 argptr->semantic(sc2); | |
| 763 sc2->insert(argptr); | |
| 764 argptr->parent = this; | |
| 765 } | |
| 766 } | |
| 767 | |
| 768 // Propagate storage class from tuple parameters to their element-parameters. | |
| 769 if (f->parameters) | |
| 770 { | |
| 771 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 772 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 773 | |
| 774 if (arg->type->ty == Ttuple) | |
| 775 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 776 size_t dim = Argument::dim(t->arguments); | |
| 777 for (size_t j = 0; j < dim; j++) | |
| 778 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 779 narg->storageClass = arg->storageClass; | |
| 780 } | |
| 781 } | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 // Declare all the function parameters as variables | |
| 786 if (nparams) | |
| 787 { /* parameters[] has all the tuples removed, as the back end | |
| 788 * doesn't know about tuples | |
| 789 */ | |
| 790 parameters = new Dsymbols(); | |
| 791 parameters->reserve(nparams); | |
| 792 for (size_t i = 0; i < nparams; i++) | |
| 793 { | |
| 794 Argument *arg = Argument::getNth(f->parameters, i); | |
| 795 Identifier *id = arg->ident; | |
| 796 if (!id) | |
| 797 { | |
| 798 /* Generate identifier for un-named parameter, | |
| 799 * because we need it later on. | |
| 800 */ | |
|
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801 arg->ident = id = Identifier::generateId("_param_", i); |
| 159 | 802 } |
| 803 VarDeclaration *v = new VarDeclaration(loc, arg->type, id, NULL); | |
| 804 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 805 v->storage_class |= STCparameter; | |
| 806 if (f->varargs == 2 && i + 1 == nparams) | |
| 807 v->storage_class |= STCvariadic; | |
| 808 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
| 809 if (v->storage_class & STClazy) | |
| 810 v->storage_class |= STCin; | |
| 811 v->semantic(sc2); | |
| 812 if (!sc2->insert(v)) | |
| 813 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 814 else | |
| 815 parameters->push(v); | |
| 816 localsymtab->insert(v); | |
| 817 v->parent = this; | |
| 818 } | |
| 819 } | |
| 820 | |
| 821 // Declare the tuple symbols and put them in the symbol table, | |
| 822 // but not in parameters[]. | |
| 823 if (f->parameters) | |
| 824 { | |
| 825 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 826 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 827 | |
| 828 if (!arg->ident) | |
| 829 continue; // never used, so ignore | |
| 830 if (arg->type->ty == Ttuple) | |
| 831 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 832 size_t dim = Argument::dim(t->arguments); | |
| 833 Objects *exps = new Objects(); | |
| 834 exps->setDim(dim); | |
| 835 for (size_t j = 0; j < dim; j++) | |
| 836 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 837 assert(narg->ident); | |
| 838 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
| 839 assert(v); | |
|
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|
840 Expression *e = new VarExp(v->loc, v); |
| 159 | 841 exps->data[j] = (void *)e; |
| 842 } | |
| 843 assert(arg->ident); | |
|
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844 TupleDeclaration *v = new TupleDeclaration(loc, arg->ident, exps); |
| 159 | 845 //printf("declaring tuple %s\n", v->toChars()); |
| 846 v->isexp = 1; | |
| 847 if (!sc2->insert(v)) | |
| 848 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 849 localsymtab->insert(v); | |
| 850 v->parent = this; | |
| 851 } | |
| 852 } | |
| 853 } | |
| 854 | |
| 855 /* Do the semantic analysis on the [in] preconditions and | |
| 856 * [out] postconditions. | |
| 857 */ | |
| 858 sc2->incontract++; | |
| 859 | |
| 860 if (frequire) | |
| 861 { /* frequire is composed of the [in] contracts | |
| 862 */ | |
| 863 // BUG: need to error if accessing out parameters | |
| 864 // BUG: need to treat parameters as const | |
| 865 // BUG: need to disallow returns and throws | |
| 866 // BUG: verify that all in and ref parameters are read | |
| 867 frequire = frequire->semantic(sc2); | |
| 868 labtab = NULL; // so body can't refer to labels | |
| 869 } | |
| 870 | |
| 871 if (fensure || addPostInvariant()) | |
| 872 { /* fensure is composed of the [out] contracts | |
| 873 */ | |
| 874 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 875 sym->parent = sc2->scopesym; | |
| 876 sc2 = sc2->push(sym); | |
| 877 | |
| 878 assert(type->nextOf()); | |
| 879 if (type->nextOf()->ty == Tvoid) | |
| 880 { | |
| 881 if (outId) | |
| 882 error("void functions have no result"); | |
| 883 } | |
| 884 else | |
| 885 { | |
| 886 if (!outId) | |
| 887 outId = Id::result; // provide a default | |
| 888 } | |
| 889 | |
| 890 if (outId) | |
| 891 { // Declare result variable | |
| 892 VarDeclaration *v; | |
| 893 Loc loc = this->loc; | |
| 894 | |
| 895 if (fensure) | |
| 896 loc = fensure->loc; | |
| 897 | |
| 898 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
| 899 v->noauto = 1; | |
| 900 sc2->incontract--; | |
| 901 v->semantic(sc2); | |
| 902 sc2->incontract++; | |
| 903 if (!sc2->insert(v)) | |
| 904 error("out result %s is already defined", v->toChars()); | |
| 905 v->parent = this; | |
| 906 vresult = v; | |
| 907 | |
| 908 // vresult gets initialized with the function return value | |
| 909 // in ReturnStatement::semantic() | |
| 910 } | |
| 911 | |
| 912 // BUG: need to treat parameters as const | |
| 913 // BUG: need to disallow returns and throws | |
| 914 if (fensure) | |
| 915 { fensure = fensure->semantic(sc2); | |
| 916 labtab = NULL; // so body can't refer to labels | |
| 917 } | |
| 918 | |
| 919 if (!global.params.useOut) | |
| 920 { fensure = NULL; // discard | |
| 921 vresult = NULL; | |
| 922 } | |
| 923 | |
| 924 // Postcondition invariant | |
| 925 if (addPostInvariant()) | |
| 926 { | |
| 927 Expression *e = NULL; | |
| 928 if (isCtorDeclaration()) | |
| 929 { | |
| 930 // Call invariant directly only if it exists | |
| 931 InvariantDeclaration *inv = ad->inv; | |
| 932 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 933 | |
| 934 while (!inv && cd) | |
| 935 { | |
| 936 cd = cd->baseClass; | |
| 937 if (!cd) | |
| 938 break; | |
| 939 inv = cd->inv; | |
| 940 } | |
| 941 if (inv) | |
| 942 { | |
| 943 e = new DsymbolExp(0, inv); | |
| 944 e = new CallExp(0, e); | |
| 945 e = e->semantic(sc2); | |
| 946 } | |
| 947 } | |
| 948 else | |
| 949 { // Call invariant virtually | |
| 950 ThisExp *v = new ThisExp(0); | |
| 951 v->type = vthis->type; | |
| 952 e = new AssertExp(0, v); | |
| 953 } | |
| 954 if (e) | |
| 955 { | |
| 956 ExpStatement *s = new ExpStatement(0, e); | |
| 957 if (fensure) | |
| 958 fensure = new CompoundStatement(0, s, fensure); | |
| 959 else | |
| 960 fensure = s; | |
| 961 } | |
| 962 } | |
| 963 | |
| 964 if (fensure) | |
| 965 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
| 966 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
| 967 ls->isReturnLabel = 1; | |
| 968 returnLabel->statement = ls; | |
| 969 } | |
| 970 sc2 = sc2->pop(); | |
| 971 } | |
| 972 | |
| 973 sc2->incontract--; | |
| 974 | |
| 975 if (fbody) | |
| 976 { ClassDeclaration *cd = isClassMember(); | |
| 977 | |
| 978 /* If this is a class constructor | |
| 979 */ | |
| 980 if (isCtorDeclaration() && cd) | |
| 981 { | |
| 982 for (int i = 0; i < cd->fields.dim; i++) | |
| 983 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 984 | |
| 985 v->ctorinit = 0; | |
| 986 } | |
| 987 } | |
| 988 | |
| 989 if (inferRetType || f->retStyle() != RETstack) | |
| 990 nrvo_can = 0; | |
| 991 | |
| 992 fbody = fbody->semantic(sc2); | |
| 993 | |
| 994 if (inferRetType) | |
| 995 { // If no return type inferred yet, then infer a void | |
| 996 if (!type->nextOf()) | |
| 997 { | |
| 998 ((TypeFunction *)type)->next = Type::tvoid; | |
| 999 type = type->semantic(loc, sc); | |
| 1000 } | |
| 1001 f = (TypeFunction *)type; | |
| 1002 } | |
| 1003 | |
| 336 | 1004 int offend = fbody ? fbody->blockExit() & BEfallthru : TRUE; |
| 159 | 1005 |
| 1006 if (isStaticCtorDeclaration()) | |
| 1007 { /* It's a static constructor. Ensure that all | |
| 1008 * ctor consts were initialized. | |
| 1009 */ | |
| 1010 | |
| 1011 Dsymbol *p = toParent(); | |
| 1012 ScopeDsymbol *ad = p->isScopeDsymbol(); | |
| 1013 if (!ad) | |
| 1014 { | |
| 1015 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); | |
| 1016 } | |
| 1017 else | |
| 1018 { | |
| 1019 for (int i = 0; i < ad->members->dim; i++) | |
| 1020 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; | |
| 1021 | |
| 1022 s->checkCtorConstInit(); | |
| 1023 } | |
| 1024 } | |
| 1025 } | |
| 1026 | |
| 1027 if (isCtorDeclaration() && cd) | |
| 1028 { | |
| 1029 //printf("callSuper = x%x\n", sc2->callSuper); | |
| 1030 | |
| 1031 // Verify that all the ctorinit fields got initialized | |
| 1032 if (!(sc2->callSuper & CSXthis_ctor)) | |
| 1033 { | |
| 1034 for (int i = 0; i < cd->fields.dim; i++) | |
| 1035 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 1036 | |
| 1037 if (v->ctorinit == 0 && v->isCtorinit()) | |
| 1038 error("missing initializer for const field %s", v->toChars()); | |
| 1039 } | |
| 1040 } | |
| 1041 | |
| 1042 if (!(sc2->callSuper & CSXany_ctor) && | |
| 1043 cd->baseClass && cd->baseClass->ctor) | |
| 1044 { | |
| 1045 sc2->callSuper = 0; | |
| 1046 | |
| 1047 // Insert implicit super() at start of fbody | |
| 1048 Expression *e1 = new SuperExp(0); | |
| 1049 Expression *e = new CallExp(0, e1); | |
| 1050 | |
| 1051 unsigned errors = global.errors; | |
| 1052 global.gag++; | |
| 1053 e = e->semantic(sc2); | |
| 1054 global.gag--; | |
| 1055 if (errors != global.errors) | |
| 1056 error("no match for implicit super() call in constructor"); | |
| 1057 | |
| 1058 Statement *s = new ExpStatement(0, e); | |
| 1059 fbody = new CompoundStatement(0, s, fbody); | |
| 1060 } | |
| 1061 } | |
| 1062 else if (fes) | |
| 1063 { // For foreach(){} body, append a return 0; | |
| 1064 Expression *e = new IntegerExp(0); | |
| 1065 Statement *s = new ReturnStatement(0, e); | |
| 1066 fbody = new CompoundStatement(0, fbody, s); | |
| 1067 assert(!returnLabel); | |
| 1068 } | |
| 1069 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
| 1070 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
| 1071 else if (!inlineAsm) | |
| 1072 { | |
| 1073 if (type->nextOf()->ty == Tvoid) | |
| 1074 { | |
| 1075 if (offend && isMain()) | |
| 1076 { // Add a return 0; statement | |
| 1077 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
| 1078 fbody = new CompoundStatement(0, fbody, s); | |
| 1079 } | |
| 1080 } | |
| 1081 else | |
| 1082 { | |
| 1083 if (offend) | |
| 1084 { Expression *e; | |
| 1085 | |
|
1103
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|
1086 warning(loc, "no return at end of function"); |
| 159 | 1087 |
| 1088 if (global.params.useAssert && | |
| 1089 !global.params.useInline) | |
| 1090 { /* Add an assert(0, msg); where the missing return | |
| 1091 * should be. | |
| 1092 */ | |
| 1093 e = new AssertExp( | |
| 1094 endloc, | |
| 1095 new IntegerExp(0), | |
|
1103
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|
1096 new StringExp(loc, (char *)"missing return expression") |
| 159 | 1097 ); |
| 1098 } | |
| 1099 else | |
| 1100 e = new HaltExp(endloc); | |
| 1101 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
| 1102 e = e->semantic(sc2); | |
| 1103 Statement *s = new ExpStatement(0, e); | |
| 1104 fbody = new CompoundStatement(0, fbody, s); | |
| 1105 } | |
| 1106 } | |
| 1107 } | |
| 1108 } | |
| 1109 | |
| 1110 { | |
| 1111 Statements *a = new Statements(); | |
| 1112 | |
| 1113 // Merge in initialization of 'out' parameters | |
| 1114 if (parameters) | |
| 1115 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1116 { | |
| 1117 VarDeclaration *v = (VarDeclaration *)parameters->data[i]; | |
| 1118 if (v->storage_class & STCout) | |
| 1119 { | |
| 1120 assert(v->init); | |
| 1121 ExpInitializer *ie = v->init->isExpInitializer(); | |
| 1122 assert(ie); | |
| 1123 a->push(new ExpStatement(0, ie->exp)); | |
| 1124 } | |
| 1125 } | |
| 1126 } | |
| 1127 | |
| 1128 // we'll handle variadics ourselves | |
| 1129 #if !IN_LLVM | |
| 1130 if (argptr) | |
| 1131 { // Initialize _argptr to point past non-variadic arg | |
| 1132 #if IN_GCC | |
| 1133 // Handled in FuncDeclaration::toObjFile | |
| 1134 v_argptr = argptr; | |
| 1135 v_argptr->init = new VoidInitializer(loc); | |
| 1136 #else | |
| 1137 Expression *e1; | |
| 1138 Expression *e; | |
| 1139 Type *t = argptr->type; | |
| 1140 VarDeclaration *p; | |
| 1141 unsigned offset; | |
| 1142 | |
| 1143 e1 = new VarExp(0, argptr); | |
| 1144 if (parameters && parameters->dim) | |
| 1145 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
| 1146 else | |
| 1147 p = v_arguments; // last parameter is _arguments[] | |
| 1148 offset = p->type->size(); | |
| 1149 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1150 e = new SymOffExp(0, p, offset); | |
| 1151 e = new AssignExp(0, e1, e); | |
| 1152 e->type = t; | |
| 1153 a->push(new ExpStatement(0, e)); | |
| 1154 #endif // IN_GCC | |
| 1155 } | |
| 1156 | |
| 1157 if (_arguments) | |
| 1158 { | |
| 1159 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1160 * _arguments = v_arguments.elements; | |
| 1161 */ | |
| 1162 Expression *e = new VarExp(0, v_arguments); | |
| 1163 e = new DotIdExp(0, e, Id::elements); | |
| 1164 Expression *e1 = new VarExp(0, _arguments); | |
| 1165 e = new AssignExp(0, e1, e); | |
| 1166 e = e->semantic(sc); | |
| 1167 a->push(new ExpStatement(0, e)); | |
| 1168 } | |
| 1169 | |
| 1170 #endif // !IN_LLVM | |
| 1171 | |
| 1172 // Merge contracts together with body into one compound statement | |
| 1173 | |
| 1174 #ifdef _DH | |
| 1175 if (frequire && global.params.useIn) | |
| 1176 { frequire->incontract = 1; | |
| 1177 a->push(frequire); | |
| 1178 } | |
| 1179 #else | |
| 1180 if (frequire && global.params.useIn) | |
| 1181 a->push(frequire); | |
| 1182 #endif | |
| 1183 | |
| 1184 // Precondition invariant | |
| 1185 if (addPreInvariant()) | |
| 1186 { | |
| 1187 Expression *e = NULL; | |
| 1188 if (isDtorDeclaration()) | |
| 1189 { | |
| 1190 // Call invariant directly only if it exists | |
| 1191 InvariantDeclaration *inv = ad->inv; | |
| 1192 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1193 | |
| 1194 while (!inv && cd) | |
| 1195 { | |
| 1196 cd = cd->baseClass; | |
| 1197 if (!cd) | |
| 1198 break; | |
| 1199 inv = cd->inv; | |
| 1200 } | |
| 1201 if (inv) | |
| 1202 { | |
| 1203 e = new DsymbolExp(0, inv); | |
| 1204 e = new CallExp(0, e); | |
| 1205 e = e->semantic(sc2); | |
| 1206 } | |
| 1207 } | |
| 1208 else | |
| 1209 { // Call invariant virtually | |
| 1210 ThisExp *v = new ThisExp(0); | |
| 1211 v->type = vthis->type; | |
| 1212 Expression *se = new StringExp(0, "null this"); | |
| 1213 se = se->semantic(sc); | |
| 1214 se->type = Type::tchar->arrayOf(); | |
| 1215 e = new AssertExp(loc, v, se); | |
| 1216 } | |
| 1217 if (e) | |
| 1218 { | |
| 1219 ExpStatement *s = new ExpStatement(0, e); | |
| 1220 a->push(s); | |
| 1221 } | |
| 1222 } | |
| 1223 | |
| 1224 if (fbody) | |
| 1225 a->push(fbody); | |
| 1226 | |
| 1227 if (fensure) | |
| 1228 { | |
| 1229 a->push(returnLabel->statement); | |
| 1230 | |
| 1231 if (type->nextOf()->ty != Tvoid) | |
| 1232 { | |
| 1233 // Create: return vresult; | |
| 1234 assert(vresult); | |
| 1235 Expression *e = new VarExp(0, vresult); | |
| 1236 if (tintro) | |
| 1237 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
| 1238 e = e->semantic(sc); | |
| 1239 } | |
| 1240 ReturnStatement *s = new ReturnStatement(0, e); | |
| 1241 a->push(s); | |
| 1242 } | |
| 1243 } | |
| 1244 | |
| 1245 fbody = new CompoundStatement(0, a); | |
|
1141
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1246 |
|
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1247 // wrap body of synchronized functions in a synchronized statement |
|
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1248 if (isSynchronized()) |
|
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1249 { |
|
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1250 ClassDeclaration *cd = parent->isClassDeclaration(); |
|
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|
1251 if (!cd) |
|
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1252 error("synchronized function %s must be a member of a class", toChars()); |
|
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1253 |
|
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1254 Expression *sync; |
|
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1255 if (isStatic()) |
|
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1256 { |
|
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1257 // static member functions synchronize on classinfo |
|
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1258 // (the expression passed doesn't matter) |
|
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1259 sync = cd->type->dotExp(sc2, new DollarExp(loc), Id::classinfo); |
|
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|
1260 } |
|
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1261 else |
|
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1262 { |
|
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1263 // non-static member functions synchronize on this |
|
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|
1264 sync = new VarExp(loc, vthis); |
|
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1265 } |
|
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1266 |
|
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1267 // is is ok to not rerun semantic on the whole fbody here; only the enclosingScopeExit |
|
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1268 // value will differ and as it is impossible to goto out of this synchronized statement, |
|
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1269 // that should not lead to errors |
|
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|
1270 SynchronizedStatement* s = new SynchronizedStatement(loc, sync, NULL); |
|
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|
1271 s->semantic(sc2); |
|
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1272 s->body = fbody; |
|
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|
1273 |
|
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1274 a = new Statements; |
|
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|
1275 a->push(s); |
|
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1276 fbody = new CompoundStatement(0, a); |
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|
1277 } |
| 159 | 1278 } |
| 1279 | |
| 1280 sc2->callSuper = 0; | |
| 1281 sc2->pop(); | |
| 1282 } | |
| 1283 semanticRun = 2; | |
| 1284 } | |
| 1285 | |
| 1286 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1287 { | |
| 1288 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
| 1289 | |
| 1290 type->toCBuffer(buf, ident, hgs); | |
| 1291 bodyToCBuffer(buf, hgs); | |
| 1292 } | |
| 1293 | |
| 1294 | |
| 1295 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1296 { | |
| 1297 if (fbody && | |
| 1298 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
| 1299 ) | |
| 1300 { buf->writenl(); | |
| 1301 | |
| 1302 // in{} | |
| 1303 if (frequire) | |
| 1304 { buf->writestring("in"); | |
| 1305 buf->writenl(); | |
| 1306 frequire->toCBuffer(buf, hgs); | |
| 1307 } | |
| 1308 | |
| 1309 // out{} | |
| 1310 if (fensure) | |
| 1311 { buf->writestring("out"); | |
| 1312 if (outId) | |
| 1313 { buf->writebyte('('); | |
| 1314 buf->writestring(outId->toChars()); | |
| 1315 buf->writebyte(')'); | |
| 1316 } | |
| 1317 buf->writenl(); | |
| 1318 fensure->toCBuffer(buf, hgs); | |
| 1319 } | |
| 1320 | |
| 1321 if (frequire || fensure) | |
| 1322 { buf->writestring("body"); | |
| 1323 buf->writenl(); | |
| 1324 } | |
| 1325 | |
| 1326 buf->writebyte('{'); | |
| 1327 buf->writenl(); | |
| 1328 fbody->toCBuffer(buf, hgs); | |
| 1329 buf->writebyte('}'); | |
| 1330 buf->writenl(); | |
| 1331 } | |
| 1332 else | |
| 1333 { buf->writeByte(';'); | |
| 1334 buf->writenl(); | |
| 1335 } | |
| 1336 } | |
| 1337 | |
| 1338 /**************************************************** | |
| 1339 * Determine if 'this' overrides fd. | |
| 1340 * Return !=0 if it does. | |
| 1341 */ | |
| 1342 | |
| 1343 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
| 1344 { int result = 0; | |
| 1345 | |
| 1346 if (fd->ident == ident) | |
| 1347 { | |
| 1348 int cov = type->covariant(fd->type); | |
| 1349 if (cov) | |
| 1350 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
| 1351 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
| 1352 | |
| 1353 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
| 1354 result = 1; | |
| 1355 } | |
| 1356 } | |
| 1357 return result; | |
| 1358 } | |
| 1359 | |
| 1360 /************************************************* | |
| 1361 * Find index of function in vtbl[0..dim] that | |
| 1362 * this function overrides. | |
| 1363 * Returns: | |
| 1364 * -1 didn't find one | |
| 1365 * -2 can't determine because of forward references | |
| 1366 */ | |
| 1367 | |
| 1368 int FuncDeclaration::findVtblIndex(Array *vtbl, int dim) | |
| 1369 { | |
| 1370 for (int vi = 0; vi < dim; vi++) | |
| 1371 { | |
| 1372 FuncDeclaration *fdv = ((Dsymbol *)vtbl->data[vi])->isFuncDeclaration(); | |
| 1373 if (fdv && fdv->ident == ident) | |
| 1374 { | |
| 1375 int cov = type->covariant(fdv->type); | |
| 1376 //printf("\tbaseclass cov = %d\n", cov); | |
| 1377 switch (cov) | |
| 1378 { | |
| 1379 case 0: // types are distinct | |
| 1380 break; | |
| 1381 | |
| 1382 case 1: | |
| 1383 return vi; | |
| 1384 | |
| 1385 case 2: | |
| 1386 //type->print(); | |
| 1387 //fdv->type->print(); | |
| 1388 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 1389 error("of type %s overrides but is not covariant with %s of type %s", | |
| 1390 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 1391 break; | |
| 1392 | |
| 1393 case 3: | |
| 1394 return -2; // forward references | |
| 1395 | |
| 1396 default: | |
| 1397 assert(0); | |
| 1398 } | |
| 1399 } | |
| 1400 } | |
| 1401 return -1; | |
| 1402 } | |
| 1403 | |
| 1404 /**************************************************** | |
| 1405 * Overload this FuncDeclaration with the new one f. | |
| 1406 * Return !=0 if successful; i.e. no conflict. | |
| 1407 */ | |
| 1408 | |
| 1409 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
| 1410 { | |
| 1411 FuncDeclaration *f; | |
| 1412 AliasDeclaration *a; | |
| 1413 | |
| 1414 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
| 1415 a = s->isAliasDeclaration(); | |
| 1416 if (a) | |
| 1417 { | |
| 1418 if (overnext) | |
| 1419 return overnext->overloadInsert(a); | |
| 1420 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
| 1421 { | |
| 1422 //printf("\ta = '%s'\n", a->type->toChars()); | |
| 1423 return FALSE; | |
| 1424 } | |
| 1425 overnext = a; | |
| 1426 //printf("\ttrue: no conflict\n"); | |
| 1427 return TRUE; | |
| 1428 } | |
| 1429 f = s->isFuncDeclaration(); | |
| 1430 if (!f) | |
| 1431 return FALSE; | |
| 1432 | |
| 1433 if (type && f->type && // can be NULL for overloaded constructors | |
| 1434 f->type->covariant(type) && | |
| 1435 !isFuncAliasDeclaration()) | |
| 1436 { | |
| 1437 //printf("\tfalse: conflict %s\n", kind()); | |
| 1438 return FALSE; | |
| 1439 } | |
| 1440 | |
| 1441 if (overnext) | |
| 1442 return overnext->overloadInsert(f); | |
| 1443 overnext = f; | |
| 1444 //printf("\ttrue: no conflict\n"); | |
| 1445 return TRUE; | |
| 1446 } | |
| 1447 | |
| 1448 /******************************************** | |
| 1449 * Find function in overload list that exactly matches t. | |
| 1450 */ | |
| 1451 | |
| 1452 /*************************************************** | |
| 1453 * Visit each overloaded function in turn, and call | |
| 1454 * (*fp)(param, f) on it. | |
| 1455 * Exit when no more, or (*fp)(param, f) returns 1. | |
| 1456 * Returns: | |
| 1457 * 0 continue | |
| 1458 * 1 done | |
| 1459 */ | |
| 1460 | |
| 1461 int overloadApply(FuncDeclaration *fstart, | |
| 1462 int (*fp)(void *, FuncDeclaration *), | |
| 1463 void *param) | |
| 1464 { | |
| 1465 FuncDeclaration *f; | |
| 1466 Declaration *d; | |
| 1467 Declaration *next; | |
| 1468 | |
| 1469 for (d = fstart; d; d = next) | |
| 1470 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1471 | |
| 1472 if (fa) | |
| 1473 { | |
| 1474 if (overloadApply(fa->funcalias, fp, param)) | |
| 1475 return 1; | |
| 1476 next = fa->overnext; | |
| 1477 } | |
| 1478 else | |
| 1479 { | |
| 1480 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1481 | |
| 1482 if (a) | |
| 1483 { | |
| 1484 Dsymbol *s = a->toAlias(); | |
| 1485 next = s->isDeclaration(); | |
| 1486 if (next == a) | |
| 1487 break; | |
| 1488 if (next == fstart) | |
| 1489 break; | |
| 1490 } | |
| 1491 else | |
| 1492 { | |
| 1493 f = d->isFuncDeclaration(); | |
| 1494 if (!f) | |
| 1495 { d->error("is aliased to a function"); | |
| 1496 break; // BUG: should print error message? | |
| 1497 } | |
| 1498 if ((*fp)(param, f)) | |
| 1499 return 1; | |
| 1500 | |
| 1501 next = f->overnext; | |
| 1502 } | |
| 1503 } | |
| 1504 } | |
| 1505 return 0; | |
| 1506 } | |
| 1507 | |
| 1508 /******************************************** | |
| 1509 * Find function in overload list that exactly matches t. | |
| 1510 */ | |
| 1511 | |
| 1512 struct Param1 | |
| 1513 { | |
| 1514 Type *t; // type to match | |
| 1515 FuncDeclaration *f; // return value | |
| 1516 }; | |
| 1517 | |
| 1518 int fp1(void *param, FuncDeclaration *f) | |
| 1519 { Param1 *p = (Param1 *)param; | |
| 1520 Type *t = p->t; | |
| 1521 | |
| 1522 if (t->equals(f->type)) | |
| 1523 { p->f = f; | |
| 1524 return 1; | |
| 1525 } | |
| 1526 | |
| 336 | 1527 #if DMDV2 |
| 159 | 1528 /* Allow covariant matches, if it's just a const conversion |
| 1529 * of the return type | |
| 1530 */ | |
| 1531 if (t->ty == Tfunction) | |
| 1532 { TypeFunction *tf = (TypeFunction *)f->type; | |
| 1533 if (tf->covariant(t) == 1 && | |
| 1534 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
| 1535 { | |
| 1536 p->f = f; | |
| 1537 return 1; | |
| 1538 } | |
| 1539 } | |
| 1540 #endif | |
| 1541 return 0; | |
| 1542 } | |
| 1543 | |
| 1544 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1545 { | |
| 1546 Param1 p; | |
| 1547 p.t = t; | |
| 1548 p.f = NULL; | |
| 1549 overloadApply(this, &fp1, &p); | |
| 1550 return p.f; | |
| 1551 } | |
| 1552 | |
| 1553 #if 0 | |
| 1554 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1555 { | |
| 1556 FuncDeclaration *f; | |
| 1557 Declaration *d; | |
| 1558 Declaration *next; | |
| 1559 | |
| 1560 for (d = this; d; d = next) | |
| 1561 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1562 | |
| 1563 if (fa) | |
| 1564 { | |
| 1565 FuncDeclaration *f2 = fa->funcalias->overloadExactMatch(t); | |
| 1566 if (f2) | |
| 1567 return f2; | |
| 1568 next = fa->overnext; | |
| 1569 } | |
| 1570 else | |
| 1571 { | |
| 1572 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1573 | |
| 1574 if (a) | |
| 1575 { | |
| 1576 Dsymbol *s = a->toAlias(); | |
| 1577 next = s->isDeclaration(); | |
| 1578 if (next == a) | |
| 1579 break; | |
| 1580 } | |
| 1581 else | |
| 1582 { | |
| 1583 f = d->isFuncDeclaration(); | |
| 1584 if (!f) | |
| 1585 break; // BUG: should print error message? | |
| 1586 if (t->equals(d->type)) | |
| 1587 return f; | |
| 1588 next = f->overnext; | |
| 1589 } | |
| 1590 } | |
| 1591 } | |
| 1592 return NULL; | |
| 1593 } | |
| 1594 #endif | |
| 1595 | |
| 1596 /******************************************** | |
| 1597 * Decide which function matches the arguments best. | |
| 1598 */ | |
| 1599 | |
| 1600 struct Param2 | |
| 1601 { | |
| 1602 Match *m; | |
| 1603 Expressions *arguments; | |
| 1604 }; | |
| 1605 | |
| 1606 int fp2(void *param, FuncDeclaration *f) | |
| 1607 { Param2 *p = (Param2 *)param; | |
| 1608 Match *m = p->m; | |
| 1609 Expressions *arguments = p->arguments; | |
| 1610 MATCH match; | |
| 1611 | |
| 1612 if (f != m->lastf) // skip duplicates | |
| 1613 { | |
| 1614 m->anyf = f; | |
|
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1615 TypeFunction *tf = (TypeFunction *)f->type; |
| 159 | 1616 match = (MATCH) tf->callMatch(arguments); |
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1617 //printf("1match = %d\n", match); |
| 159 | 1618 if (match != MATCHnomatch) |
| 1619 { | |
| 1620 if (match > m->last) | |
| 1621 goto LfIsBetter; | |
| 1622 | |
| 1623 if (match < m->last) | |
| 1624 goto LlastIsBetter; | |
| 1625 | |
| 1626 /* See if one of the matches overrides the other. | |
| 1627 */ | |
| 1628 if (m->lastf->overrides(f)) | |
| 1629 goto LlastIsBetter; | |
| 1630 else if (f->overrides(m->lastf)) | |
| 1631 goto LfIsBetter; | |
| 1632 | |
| 1633 Lambiguous: | |
| 1634 m->nextf = f; | |
| 1635 m->count++; | |
| 1636 return 0; | |
| 1637 | |
| 1638 LfIsBetter: | |
| 1639 m->last = match; | |
| 1640 m->lastf = f; | |
| 1641 m->count = 1; | |
| 1642 return 0; | |
| 1643 | |
| 1644 LlastIsBetter: | |
| 1645 return 0; | |
| 1646 } | |
| 1647 } | |
| 1648 return 0; | |
| 1649 } | |
| 1650 | |
| 1651 | |
| 1652 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1653 { | |
| 1654 Param2 p; | |
| 1655 p.m = m; | |
| 1656 p.arguments = arguments; | |
| 1657 overloadApply(fstart, &fp2, &p); | |
| 1658 } | |
| 1659 | |
| 1660 #if 0 | |
| 1661 // Recursive helper function | |
| 1662 | |
| 1663 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1664 { | |
| 1665 MATCH match; | |
| 1666 Declaration *d; | |
| 1667 Declaration *next; | |
| 1668 | |
| 1669 for (d = fstart; d; d = next) | |
| 1670 { | |
| 1671 FuncDeclaration *f; | |
| 1672 FuncAliasDeclaration *fa; | |
| 1673 AliasDeclaration *a; | |
| 1674 | |
| 1675 fa = d->isFuncAliasDeclaration(); | |
| 1676 if (fa) | |
| 1677 { | |
| 1678 overloadResolveX(m, fa->funcalias, arguments); | |
| 1679 next = fa->overnext; | |
| 1680 } | |
| 1681 else if ((f = d->isFuncDeclaration()) != NULL) | |
| 1682 { | |
| 1683 next = f->overnext; | |
| 1684 if (f == m->lastf) | |
| 1685 continue; // skip duplicates | |
| 1686 else | |
| 1687 { | |
| 1688 TypeFunction *tf; | |
| 1689 | |
| 1690 m->anyf = f; | |
| 1691 tf = (TypeFunction *)f->type; | |
| 1692 match = (MATCH) tf->callMatch(arguments); | |
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1693 //printf("2match = %d\n", match); |
| 159 | 1694 if (match != MATCHnomatch) |
| 1695 { | |
| 1696 if (match > m->last) | |
| 1697 goto LfIsBetter; | |
| 1698 | |
| 1699 if (match < m->last) | |
| 1700 goto LlastIsBetter; | |
| 1701 | |
| 1702 /* See if one of the matches overrides the other. | |
| 1703 */ | |
| 1704 if (m->lastf->overrides(f)) | |
| 1705 goto LlastIsBetter; | |
| 1706 else if (f->overrides(m->lastf)) | |
| 1707 goto LfIsBetter; | |
| 1708 | |
| 1709 Lambiguous: | |
| 1710 m->nextf = f; | |
| 1711 m->count++; | |
| 1712 continue; | |
| 1713 | |
| 1714 LfIsBetter: | |
| 1715 m->last = match; | |
| 1716 m->lastf = f; | |
| 1717 m->count = 1; | |
| 1718 continue; | |
| 1719 | |
| 1720 LlastIsBetter: | |
| 1721 continue; | |
| 1722 } | |
| 1723 } | |
| 1724 } | |
| 1725 else if ((a = d->isAliasDeclaration()) != NULL) | |
| 1726 { | |
| 1727 Dsymbol *s = a->toAlias(); | |
| 1728 next = s->isDeclaration(); | |
| 1729 if (next == a) | |
| 1730 break; | |
| 1731 if (next == fstart) | |
| 1732 break; | |
| 1733 } | |
| 1734 else | |
| 1735 { d->error("is aliased to a function"); | |
| 1736 break; | |
| 1737 } | |
| 1738 } | |
| 1739 } | |
| 1740 #endif | |
| 1741 | |
| 1742 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expressions *arguments) | |
| 1743 { | |
| 1744 TypeFunction *tf; | |
| 1745 Match m; | |
| 1746 | |
| 1747 #if 0 | |
| 1748 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
| 1749 if (arguments) | |
| 1750 { int i; | |
| 1751 | |
| 1752 for (i = 0; i < arguments->dim; i++) | |
| 1753 { Expression *arg; | |
| 1754 | |
| 1755 arg = (Expression *)arguments->data[i]; | |
| 1756 assert(arg->type); | |
| 1757 printf("\t%s: ", arg->toChars()); | |
| 1758 arg->type->print(); | |
| 1759 } | |
| 1760 } | |
| 1761 #endif | |
| 1762 | |
| 1763 memset(&m, 0, sizeof(m)); | |
| 1764 m.last = MATCHnomatch; | |
| 1765 overloadResolveX(&m, this, arguments); | |
| 1766 | |
| 1767 if (m.count == 1) // exactly one match | |
| 1768 { | |
| 1769 return m.lastf; | |
| 1770 } | |
| 1771 else | |
| 1772 { | |
| 1773 OutBuffer buf; | |
| 1774 | |
| 1775 if (arguments) | |
| 1776 { | |
| 1777 HdrGenState hgs; | |
| 1778 | |
| 1779 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
| 1780 } | |
| 1781 | |
| 1782 if (m.last == MATCHnomatch) | |
| 1783 { | |
| 1784 tf = (TypeFunction *)type; | |
| 1785 | |
| 1786 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
| 1787 error(loc, "%s does not match parameter types (%s)", | |
| 1788 Argument::argsTypesToChars(tf->parameters, tf->varargs), | |
| 1789 buf.toChars()); | |
| 1790 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1791 } | |
| 1792 else | |
| 1793 { | |
| 1794 #if 1 | |
| 1795 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
| 1796 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
| 1797 | |
| 1798 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1799 buf.toChars(), | |
| 1800 m.lastf->toPrettyChars(), Argument::argsTypesToChars(t1->parameters, t1->varargs), | |
| 1801 m.nextf->toPrettyChars(), Argument::argsTypesToChars(t2->parameters, t2->varargs)); | |
| 1802 #else | |
| 1803 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1804 m.lastf->type->toChars(), | |
| 1805 m.nextf->type->toChars(), | |
| 1806 m.lastf->toChars()); | |
| 1807 #endif | |
| 1808 return m.lastf; | |
| 1809 } | |
| 1810 } | |
| 1811 } | |
| 1812 | |
| 1813 /******************************** | |
| 1814 * Labels are in a separate scope, one per function. | |
| 1815 */ | |
| 1816 | |
| 1817 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
| 1818 { Dsymbol *s; | |
| 1819 | |
| 1820 if (!labtab) | |
| 1821 labtab = new DsymbolTable(); // guess we need one | |
| 1822 | |
| 1823 s = labtab->lookup(ident); | |
| 1824 if (!s) | |
| 1825 { | |
| 1826 s = new LabelDsymbol(ident); | |
| 1827 labtab->insert(s); | |
| 1828 } | |
| 1829 return (LabelDsymbol *)s; | |
| 1830 } | |
| 336 | 1831 |
| 159 | 1832 /**************************************** |
| 1833 * If non-static member function that has a 'this' pointer, | |
| 1834 * return the aggregate it is a member of. | |
| 1835 * Otherwise, return NULL. | |
| 1836 */ | |
| 1837 | |
| 1838 AggregateDeclaration *FuncDeclaration::isThis() | |
| 1839 { AggregateDeclaration *ad; | |
| 1840 | |
| 1841 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
| 1842 ad = NULL; | |
| 1843 if ((storage_class & STCstatic) == 0) | |
| 1844 { | |
| 1845 ad = isMember2(); | |
| 1846 } | |
| 1847 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
| 1848 return ad; | |
| 1849 } | |
| 1850 | |
| 1851 AggregateDeclaration *FuncDeclaration::isMember2() | |
| 1852 { AggregateDeclaration *ad; | |
| 1853 | |
| 1854 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
| 1855 ad = NULL; | |
| 1856 for (Dsymbol *s = this; s; s = s->parent) | |
| 1857 { | |
| 1858 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
| 1859 ad = s->isMember(); | |
| 1860 if (ad) | |
| 1861 { //printf("test4\n"); | |
| 1862 break; | |
| 1863 } | |
| 1864 if (!s->parent || | |
| 1865 (!s->parent->isTemplateInstance())) | |
| 1866 { //printf("test5\n"); | |
| 1867 break; | |
| 1868 } | |
| 1869 } | |
| 1870 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
| 1871 return ad; | |
| 1872 } | |
| 1873 | |
| 1874 /***************************************** | |
| 1875 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 1876 * Error if this cannot call fd. | |
| 1877 * Returns: | |
| 1878 * 0 same level | |
| 1879 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 1880 * >0 decrease nesting by number | |
| 1881 */ | |
| 1882 | |
| 1883 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
| 1884 { int level; | |
| 1885 Dsymbol *s; | |
| 1886 Dsymbol *fdparent; | |
| 1887 | |
| 1888 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
| 1889 fdparent = fd->toParent2(); | |
| 1890 if (fdparent == this) | |
| 1891 return -1; | |
| 1892 s = this; | |
| 1893 level = 0; | |
| 1894 while (fd != s && fdparent != s->toParent2()) | |
| 1895 { | |
| 1896 //printf("\ts = '%s'\n", s->toChars()); | |
| 1897 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
| 1898 if (thisfd) | |
| 1899 { if (!thisfd->isNested() && !thisfd->vthis) | |
| 1900 goto Lerr; | |
| 1901 } | |
| 1902 else | |
| 1903 { | |
| 1904 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
| 1905 if (thiscd) | |
| 1906 { if (!thiscd->isNested()) | |
| 1907 goto Lerr; | |
| 1908 } | |
| 1909 else | |
| 1910 goto Lerr; | |
| 1911 } | |
| 1912 | |
| 1913 s = s->toParent2(); | |
| 1914 assert(s); | |
| 1915 level++; | |
| 1916 } | |
| 1917 return level; | |
| 1918 | |
| 1919 Lerr: | |
| 1920 error(loc, "cannot access frame of function %s", fd->toChars()); | |
| 1921 return 1; | |
| 1922 } | |
| 1923 | |
| 1924 void FuncDeclaration::appendExp(Expression *e) | |
| 1925 { Statement *s; | |
| 1926 | |
| 1927 s = new ExpStatement(0, e); | |
| 1928 appendState(s); | |
| 1929 } | |
| 1930 | |
| 1931 void FuncDeclaration::appendState(Statement *s) | |
| 1932 { CompoundStatement *cs; | |
| 1933 | |
| 1934 if (!fbody) | |
| 1935 { Statements *a; | |
| 1936 | |
| 1937 a = new Statements(); | |
| 1938 fbody = new CompoundStatement(0, a); | |
| 1939 } | |
| 1940 cs = fbody->isCompoundStatement(); | |
| 1941 cs->statements->push(s); | |
| 1942 } | |
| 1943 | |
| 1944 | |
| 1945 int FuncDeclaration::isMain() | |
| 1946 { | |
| 1947 return ident == Id::main && | |
| 1948 linkage != LINKc && !isMember() && !isNested(); | |
| 1949 } | |
| 1950 | |
| 1951 int FuncDeclaration::isWinMain() | |
| 1952 { | |
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1953 //printf("FuncDeclaration::isWinMain() %s\n", toChars()); |
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1954 #if 0 |
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1955 int x = ident == Id::WinMain && |
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1956 linkage != LINKc && !isMember(); |
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1957 printf("%s\n", x ? "yes" : "no"); |
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1958 return x; |
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1959 #else |
| 159 | 1960 return ident == Id::WinMain && |
| 1961 linkage != LINKc && !isMember(); | |
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1962 #endif |
| 159 | 1963 } |
| 1964 | |
| 1965 int FuncDeclaration::isDllMain() | |
| 1966 { | |
| 1967 return ident == Id::DllMain && | |
| 1968 linkage != LINKc && !isMember(); | |
| 1969 } | |
| 1970 | |
| 1971 int FuncDeclaration::isExport() | |
| 1972 { | |
| 1973 return protection == PROTexport; | |
| 1974 } | |
| 1975 | |
| 1976 int FuncDeclaration::isImportedSymbol() | |
| 1977 { | |
| 1978 //printf("isImportedSymbol()\n"); | |
| 1979 //printf("protection = %d\n", protection); | |
| 1980 return (protection == PROTexport) && !fbody; | |
| 1981 } | |
| 1982 | |
| 1983 // Determine if function goes into virtual function pointer table | |
| 1984 | |
| 1985 int FuncDeclaration::isVirtual() | |
| 1986 { | |
| 1987 #if 0 | |
| 1988 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
| 1989 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
| 1990 printf("result is %d\n", | |
| 1991 isMember() && | |
| 1992 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1993 toParent()->isClassDeclaration()); | |
| 1994 #endif | |
| 1995 return isMember() && | |
| 1996 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1997 toParent()->isClassDeclaration(); | |
| 1998 } | |
| 1999 | |
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2000 int FuncDeclaration::isFinal() |
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2001 { |
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2002 ClassDeclaration *cd; |
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2003 #if 0 |
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2004 printf("FuncDeclaration::isFinal(%s)\n", toChars()); |
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2005 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); |
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2006 printf("result is %d\n", |
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2007 isMember() && |
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2008 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && |
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2009 (cd = toParent()->isClassDeclaration()) != NULL && |
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2010 cd->storage_class & STCfinal); |
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2011 #endif |
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2012 return isMember() && |
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2013 (Declaration::isFinal() || |
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2014 ((cd = toParent()->isClassDeclaration()) != NULL && cd->storage_class & STCfinal)); |
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|
2015 } |
|
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|
2016 |
| 159 | 2017 int FuncDeclaration::isAbstract() |
| 2018 { | |
| 2019 return storage_class & STCabstract; | |
| 2020 } | |
| 2021 | |
| 2022 int FuncDeclaration::isCodeseg() | |
| 2023 { | |
| 2024 return TRUE; // functions are always in the code segment | |
| 2025 } | |
| 2026 | |
| 2027 // Determine if function needs | |
| 2028 // a static frame pointer to its lexically enclosing function | |
| 2029 | |
| 2030 int FuncDeclaration::isNested() | |
| 2031 { | |
| 2032 //if (!toParent()) | |
| 2033 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
| 2034 //printf("\ttoParent() = '%s'\n", toParent()->toChars()); | |
| 2035 return ((storage_class & STCstatic) == 0) && | |
| 2036 (toParent2()->isFuncDeclaration() != NULL); | |
| 2037 } | |
| 2038 | |
| 2039 int FuncDeclaration::needThis() | |
| 2040 { | |
| 2041 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
| 2042 int i = isThis() != NULL; | |
| 2043 //printf("\t%d\n", i); | |
| 2044 if (!i && isFuncAliasDeclaration()) | |
| 2045 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
| 2046 return i; | |
| 2047 } | |
| 2048 | |
| 2049 int FuncDeclaration::addPreInvariant() | |
| 2050 { | |
| 2051 AggregateDeclaration *ad = isThis(); | |
| 2052 return (ad && | |
| 2053 //ad->isClassDeclaration() && | |
| 2054 global.params.useInvariants && | |
| 2055 (protection == PROTpublic || protection == PROTexport) && | |
| 2056 !naked); | |
| 2057 } | |
| 2058 | |
| 2059 int FuncDeclaration::addPostInvariant() | |
| 2060 { | |
| 2061 AggregateDeclaration *ad = isThis(); | |
| 2062 return (ad && | |
| 2063 ad->inv && | |
| 2064 //ad->isClassDeclaration() && | |
| 2065 global.params.useInvariants && | |
| 2066 (protection == PROTpublic || protection == PROTexport) && | |
| 2067 !naked); | |
| 2068 } | |
| 2069 | |
| 2070 /********************************** | |
| 2071 * Generate a FuncDeclaration for a runtime library function. | |
| 2072 */ | |
| 2073 | |
|
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|
2074 // |
|
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|
2075 // LDC: Adjusted to give argument info to the runtime function decl. |
|
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|
2076 // |
|
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|
2077 |
|
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parents:
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|
2078 FuncDeclaration *FuncDeclaration::genCfunc(Arguments *args, Type *treturn, const char *name) |
| 159 | 2079 { |
|
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|
2080 return genCfunc(args, treturn, Lexer::idPool(name)); |
| 159 | 2081 } |
| 2082 | |
|
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|
2083 FuncDeclaration *FuncDeclaration::genCfunc(Arguments *args, Type *treturn, Identifier *id) |
| 159 | 2084 { |
| 2085 FuncDeclaration *fd; | |
| 2086 TypeFunction *tf; | |
| 2087 Dsymbol *s; | |
| 2088 static DsymbolTable *st = NULL; | |
| 2089 | |
| 2090 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
| 2091 //printf("treturn\n\t"); treturn->print(); | |
| 2092 | |
| 2093 // See if already in table | |
| 2094 if (!st) | |
| 2095 st = new DsymbolTable(); | |
| 2096 s = st->lookup(id); | |
| 2097 if (s) | |
| 2098 { | |
| 2099 fd = s->isFuncDeclaration(); | |
| 2100 assert(fd); | |
| 2101 assert(fd->type->nextOf()->equals(treturn)); | |
| 2102 } | |
| 2103 else | |
| 2104 { | |
|
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diff
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|
2105 tf = new TypeFunction(args, treturn, 0, LINKc); |
| 159 | 2106 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); |
| 2107 fd->protection = PROTpublic; | |
| 2108 fd->linkage = LINKc; | |
| 2109 | |
| 2110 st->insert(fd); | |
| 2111 } | |
| 2112 return fd; | |
| 2113 } | |
| 2114 | |
| 336 | 2115 const char *FuncDeclaration::kind() |
| 159 | 2116 { |
| 2117 return "function"; | |
| 2118 } | |
| 336 | 2119 |
| 159 | 2120 /******************************* |
| 2121 * Look at all the variables in this function that are referenced | |
| 2122 * by nested functions, and determine if a closure needs to be | |
| 2123 * created for them. | |
| 2124 */ | |
| 2125 | |
| 336 | 2126 #if DMDV2 |
| 159 | 2127 int FuncDeclaration::needsClosure() |
| 2128 { | |
| 2129 /* Need a closure for all the closureVars[] if any of the | |
| 2130 * closureVars[] are accessed by a | |
| 2131 * function that escapes the scope of this function. | |
| 2132 * We take the conservative approach and decide that any function that: | |
| 2133 * 1) is a virtual function | |
| 2134 * 2) has its address taken | |
| 2135 * 3) has a parent that escapes | |
| 336 | 2136 * |
| 2137 * Note that since a non-virtual function can be called by | |
| 2138 * a virtual one, if that non-virtual function accesses a closure | |
| 2139 * var, the closure still has to be taken. Hence, we check for isThis() | |
| 2140 * instead of isVirtual(). (thanks to David Friedman) | |
| 159 | 2141 */ |
| 2142 | |
| 2143 //printf("FuncDeclaration::needsClosure() %s\n", toChars()); | |
| 2144 for (int i = 0; i < closureVars.dim; i++) | |
| 2145 { VarDeclaration *v = (VarDeclaration *)closureVars.data[i]; | |
| 2146 assert(v->isVarDeclaration()); | |
| 2147 //printf("\tv = %s\n", v->toChars()); | |
| 2148 | |
| 2149 for (int j = 0; j < v->nestedrefs.dim; j++) | |
| 2150 { FuncDeclaration *f = (FuncDeclaration *)v->nestedrefs.data[j]; | |
| 2151 assert(f != this); | |
| 2152 | |
| 2153 //printf("\t\tf = %s, %d, %d\n", f->toChars(), f->isVirtual(), f->tookAddressOf); | |
| 336 | 2154 if (f->isThis() || f->tookAddressOf) |
| 159 | 2155 goto Lyes; // assume f escapes this function's scope |
| 2156 | |
| 2157 // Look to see if any parents of f that are below this escape | |
|
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6aee82889553
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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468
diff
changeset
|
2158 for (Dsymbol *s = f->parent; s && s != this; s = s->parent) |
| 159 | 2159 { |
| 2160 f = s->isFuncDeclaration(); | |
| 336 | 2161 if (f && (f->isThis() || f->tookAddressOf)) |
| 159 | 2162 goto Lyes; |
| 2163 } | |
| 2164 } | |
| 2165 } | |
| 2166 return 0; | |
| 2167 | |
| 2168 Lyes: | |
| 2169 //printf("\tneeds closure\n"); | |
| 2170 return 1; | |
| 2171 } | |
| 2172 #endif | |
| 2173 | |
| 2174 /****************************** FuncAliasDeclaration ************************/ | |
| 2175 | |
| 2176 // Used as a way to import a set of functions from another scope into this one. | |
| 2177 | |
| 2178 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
| 2179 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
| 2180 (enum STC)funcalias->storage_class, funcalias->type) | |
| 2181 { | |
| 2182 assert(funcalias != this); | |
| 2183 this->funcalias = funcalias; | |
| 2184 } | |
| 2185 | |
| 336 | 2186 const char *FuncAliasDeclaration::kind() |
| 159 | 2187 { |
| 2188 return "function alias"; | |
| 2189 } | |
| 2190 | |
| 2191 | |
| 2192 /****************************** FuncLiteralDeclaration ************************/ | |
| 2193 | |
| 2194 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
| 2195 enum TOK tok, ForeachStatement *fes) | |
| 2196 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
| 2197 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
957
diff
changeset
|
2198 const char *id; |
| 159 | 2199 |
| 2200 if (fes) | |
| 2201 id = "__foreachbody"; | |
| 2202 else if (tok == TOKdelegate) | |
| 2203 id = "__dgliteral"; | |
| 2204 else | |
| 2205 id = "__funcliteral"; | |
| 2206 this->ident = Identifier::generateId(id); | |
| 2207 this->tok = tok; | |
| 2208 this->fes = fes; | |
| 2209 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
| 2210 } | |
| 2211 | |
| 2212 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
| 2213 { | |
| 2214 FuncLiteralDeclaration *f; | |
| 2215 | |
| 2216 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 2217 if (s) | |
| 2218 f = (FuncLiteralDeclaration *)s; | |
| 2219 else | |
| 2220 f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); | |
| 2221 FuncDeclaration::syntaxCopy(f); | |
| 2222 return f; | |
| 2223 } | |
| 2224 | |
| 2225 int FuncLiteralDeclaration::isNested() | |
| 2226 { | |
| 2227 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
| 2228 return (tok == TOKdelegate); | |
| 2229 } | |
| 2230 | |
| 336 | 2231 int FuncLiteralDeclaration::isVirtual() |
| 2232 { | |
| 2233 return FALSE; | |
| 2234 } | |
| 2235 | |
| 2236 const char *FuncLiteralDeclaration::kind() | |
| 159 | 2237 { |
| 2238 // GCC requires the (char*) casts | |
| 2239 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
| 2240 } | |
| 2241 | |
| 2242 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2243 { | |
| 2244 static Identifier *idfunc; | |
| 2245 static Identifier *iddel; | |
| 2246 | |
| 2247 if (!idfunc) | |
| 2248 idfunc = new Identifier("function", 0); | |
| 2249 if (!iddel) | |
| 2250 iddel = new Identifier("delegate", 0); | |
| 2251 | |
| 2252 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
| 2253 bodyToCBuffer(buf, hgs); | |
| 2254 } | |
| 2255 | |
| 2256 | |
| 2257 /********************************* CtorDeclaration ****************************/ | |
| 2258 | |
| 2259 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2260 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) | |
| 2261 { | |
| 2262 this->arguments = arguments; | |
| 2263 this->varargs = varargs; | |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
468
diff
changeset
|
2264 //printf("CtorDeclaration(loc = %s) %s\n", loc.toChars(), toChars()); |
| 159 | 2265 } |
| 2266 | |
| 2267 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2268 { | |
| 2269 CtorDeclaration *f; | |
| 2270 | |
| 2271 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
| 2272 | |
| 2273 f->outId = outId; | |
| 2274 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 2275 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 2276 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 2277 assert(!fthrows); // deprecated | |
| 2278 | |
| 2279 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2280 return f; | |
| 2281 } | |
| 2282 | |
| 2283 | |
| 2284 void CtorDeclaration::semantic(Scope *sc) | |
| 2285 { | |
| 2286 ClassDeclaration *cd; | |
| 2287 Type *tret; | |
| 2288 | |
| 2289 //printf("CtorDeclaration::semantic()\n"); | |
| 2290 if (type) | |
| 2291 return; | |
| 2292 | |
| 2293 sc = sc->push(); | |
| 2294 sc->stc &= ~STCstatic; // not a static constructor | |
| 2295 | |
| 2296 parent = sc->parent; | |
| 2297 Dsymbol *parent = toParent(); | |
| 2298 cd = parent->isClassDeclaration(); | |
| 2299 if (!cd) | |
| 2300 { | |
| 2301 error("constructors are only for class definitions"); | |
|
333
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[svn r354] Fix the regressions between [346] and [353] by making constructors and destructors outside classes fatal errors.
ChristianK
parents:
305
diff
changeset
|
2302 fatal(); |
| 159 | 2303 tret = Type::tvoid; |
| 2304 } | |
| 2305 else | |
| 2306 tret = cd->type; //->referenceTo(); | |
| 2307 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 336 | 2308 if (!originalType) |
| 2309 originalType = type; | |
| 159 | 2310 |
| 2311 sc->flags |= SCOPEctor; | |
| 2312 type = type->semantic(loc, sc); | |
| 2313 sc->flags &= ~SCOPEctor; | |
| 2314 | |
| 2315 // Append: | |
| 2316 // return this; | |
| 2317 // to the function body | |
| 2318 if (fbody) | |
| 2319 { Expression *e; | |
| 2320 Statement *s; | |
| 2321 | |
| 2322 e = new ThisExp(0); | |
| 2323 s = new ReturnStatement(0, e); | |
| 2324 fbody = new CompoundStatement(0, fbody, s); | |
| 2325 } | |
| 2326 | |
| 2327 FuncDeclaration::semantic(sc); | |
| 2328 | |
| 2329 sc->pop(); | |
| 2330 | |
| 2331 // See if it's the default constructor | |
| 2332 if (cd && varargs == 0 && Argument::dim(arguments) == 0) | |
| 2333 cd->defaultCtor = this; | |
| 2334 } | |
| 2335 | |
| 336 | 2336 const char *CtorDeclaration::kind() |
| 159 | 2337 { |
| 2338 return "constructor"; | |
| 2339 } | |
| 2340 | |
| 2341 char *CtorDeclaration::toChars() | |
| 2342 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
957
diff
changeset
|
2343 return (char *)"this"; |
| 159 | 2344 } |
| 2345 | |
| 2346 int CtorDeclaration::isVirtual() | |
| 2347 { | |
| 2348 return FALSE; | |
| 2349 } | |
| 2350 | |
| 2351 int CtorDeclaration::addPreInvariant() | |
| 2352 { | |
| 2353 return FALSE; | |
| 2354 } | |
| 2355 | |
| 2356 int CtorDeclaration::addPostInvariant() | |
| 2357 { | |
| 2358 return (vthis && global.params.useInvariants); | |
| 2359 } | |
| 2360 | |
| 2361 | |
| 2362 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2363 { | |
| 2364 buf->writestring("this"); | |
| 2365 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2366 bodyToCBuffer(buf, hgs); | |
| 2367 } | |
| 2368 | |
| 2369 /********************************* DtorDeclaration ****************************/ | |
| 2370 | |
| 2371 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
| 2372 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
| 2373 { | |
| 2374 } | |
| 2375 | |
| 2376 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc, Identifier *id) | |
| 2377 : FuncDeclaration(loc, endloc, id, STCundefined, NULL) | |
| 2378 { | |
| 2379 } | |
| 2380 | |
| 2381 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2382 { | |
| 2383 assert(!s); | |
| 2384 DtorDeclaration *dd = new DtorDeclaration(loc, endloc, ident); | |
| 2385 return FuncDeclaration::syntaxCopy(dd); | |
| 2386 } | |
| 2387 | |
| 2388 | |
| 2389 void DtorDeclaration::semantic(Scope *sc) | |
| 2390 { | |
| 2391 ClassDeclaration *cd; | |
| 2392 | |
| 2393 parent = sc->parent; | |
| 2394 Dsymbol *parent = toParent(); | |
| 2395 cd = parent->isClassDeclaration(); | |
| 2396 if (!cd) | |
| 2397 { | |
| 2398 error("destructors only are for class definitions"); | |
|
333
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ChristianK
parents:
305
diff
changeset
|
2399 fatal(); |
| 159 | 2400 } |
| 2401 else | |
| 2402 cd->dtors.push(this); | |
| 2403 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2404 | |
| 2405 sc = sc->push(); | |
| 2406 sc->stc &= ~STCstatic; // not a static destructor | |
| 2407 sc->linkage = LINKd; | |
| 2408 | |
| 2409 FuncDeclaration::semantic(sc); | |
| 2410 | |
| 2411 sc->pop(); | |
| 2412 } | |
| 2413 | |
| 2414 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
| 2415 { | |
| 2416 return FALSE; // cannot overload destructors | |
| 2417 } | |
| 2418 | |
| 2419 int DtorDeclaration::addPreInvariant() | |
| 2420 { | |
| 2421 return (vthis && global.params.useInvariants); | |
| 2422 } | |
| 2423 | |
| 2424 int DtorDeclaration::addPostInvariant() | |
| 2425 { | |
| 2426 return FALSE; | |
| 2427 } | |
| 2428 | |
| 2429 int DtorDeclaration::isVirtual() | |
| 2430 { | |
| 2431 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
| 2432 * but doing so will require recompiling everything. | |
| 2433 */ | |
| 2434 #if BREAKABI | |
| 2435 return FALSE; | |
| 2436 #else | |
| 2437 return FuncDeclaration::isVirtual(); | |
| 2438 #endif | |
| 2439 } | |
| 2440 | |
| 2441 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2442 { | |
| 2443 if (hgs->hdrgen) | |
| 2444 return; | |
| 2445 buf->writestring("~this()"); | |
| 2446 bodyToCBuffer(buf, hgs); | |
| 2447 } | |
| 2448 | |
| 2449 /********************************* StaticCtorDeclaration ****************************/ | |
| 2450 | |
| 2451 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
| 2452 : FuncDeclaration(loc, endloc, | |
|
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diff
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|
2453 Identifier::generateId("_staticCtor"), STCstatic, NULL) |
| 159 | 2454 { |
| 2455 } | |
| 2456 | |
| 2457 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2458 { | |
| 2459 StaticCtorDeclaration *scd; | |
| 2460 | |
| 2461 assert(!s); | |
| 2462 scd = new StaticCtorDeclaration(loc, endloc); | |
| 2463 return FuncDeclaration::syntaxCopy(scd); | |
| 2464 } | |
| 2465 | |
| 2466 | |
| 2467 void StaticCtorDeclaration::semantic(Scope *sc) | |
| 2468 { | |
| 2469 //printf("StaticCtorDeclaration::semantic()\n"); | |
| 2470 | |
| 2471 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2472 | |
| 336 | 2473 /* If the static ctor appears within a template instantiation, |
| 2474 * it could get called multiple times by the module constructors | |
| 2475 * for different modules. Thus, protect it with a gate. | |
| 2476 */ | |
| 2477 if (inTemplateInstance()) | |
| 2478 { | |
| 2479 /* Add this prefix to the function: | |
| 2480 * static int gate; | |
| 2481 * if (++gate != 1) return; | |
| 2482 * Note that this is not thread safe; should not have threads | |
| 2483 * during static construction. | |
| 2484 */ | |
| 2485 Identifier *id = Lexer::idPool("__gate"); | |
| 2486 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 2487 v->storage_class = STCstatic; | |
| 2488 Statements *sa = new Statements(); | |
| 2489 Statement *s = new DeclarationStatement(0, v); | |
| 2490 sa->push(s); | |
| 2491 Expression *e = new IdentifierExp(0, id); | |
| 2492 e = new AddAssignExp(0, e, new IntegerExp(1)); | |
| 2493 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(1)); | |
| 2494 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); | |
| 2495 sa->push(s); | |
| 2496 if (fbody) | |
| 2497 sa->push(fbody); | |
| 2498 fbody = new CompoundStatement(0, sa); | |
| 2499 } | |
| 2500 | |
| 159 | 2501 FuncDeclaration::semantic(sc); |
| 2502 | |
| 2503 // We're going to need ModuleInfo | |
| 2504 Module *m = getModule(); | |
| 2505 if (!m) | |
| 2506 m = sc->module; | |
| 2507 if (m) | |
| 2508 { m->needmoduleinfo = 1; | |
| 2509 #ifdef IN_GCC | |
| 2510 m->strictlyneedmoduleinfo = 1; | |
| 2511 #endif | |
| 2512 } | |
| 2513 } | |
| 2514 | |
| 2515 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
| 2516 { | |
| 2517 return NULL; | |
| 2518 } | |
| 2519 | |
| 2520 int StaticCtorDeclaration::isStaticConstructor() | |
| 2521 { | |
| 2522 return TRUE; | |
| 2523 } | |
| 2524 | |
| 2525 int StaticCtorDeclaration::isVirtual() | |
| 2526 { | |
| 2527 return FALSE; | |
| 2528 } | |
| 2529 | |
| 2530 int StaticCtorDeclaration::addPreInvariant() | |
| 2531 { | |
| 2532 return FALSE; | |
| 2533 } | |
| 2534 | |
| 2535 int StaticCtorDeclaration::addPostInvariant() | |
| 2536 { | |
| 2537 return FALSE; | |
| 2538 } | |
| 2539 | |
| 2540 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2541 { | |
| 2542 if (hgs->hdrgen) | |
| 2543 { buf->writestring("static this();\n"); | |
| 2544 return; | |
| 2545 } | |
| 2546 buf->writestring("static this()"); | |
| 2547 bodyToCBuffer(buf, hgs); | |
| 2548 } | |
| 2549 | |
| 2550 /********************************* StaticDtorDeclaration ****************************/ | |
| 2551 | |
| 2552 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
| 2553 : FuncDeclaration(loc, endloc, | |
|
957
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Backed out changeset [369996c08420].
Christian Kamm <kamm incasoftware de>
parents:
956
diff
changeset
|
2554 Identifier::generateId("_staticDtor"), STCstatic, NULL) |
| 159 | 2555 { |
| 336 | 2556 vgate = NULL; |
| 159 | 2557 } |
| 2558 | |
| 2559 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2560 { | |
| 2561 StaticDtorDeclaration *sdd; | |
| 2562 | |
| 2563 assert(!s); | |
| 2564 sdd = new StaticDtorDeclaration(loc, endloc); | |
| 2565 return FuncDeclaration::syntaxCopy(sdd); | |
| 2566 } | |
| 2567 | |
| 2568 | |
| 2569 void StaticDtorDeclaration::semantic(Scope *sc) | |
| 2570 { | |
| 2571 ClassDeclaration *cd; | |
| 2572 Type *tret; | |
| 2573 | |
| 2574 cd = sc->scopesym->isClassDeclaration(); | |
| 2575 if (!cd) | |
| 2576 { | |
| 2577 } | |
| 2578 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2579 | |
| 336 | 2580 /* If the static ctor appears within a template instantiation, |
| 2581 * it could get called multiple times by the module constructors | |
| 2582 * for different modules. Thus, protect it with a gate. | |
| 2583 */ | |
| 2584 if (inTemplateInstance()) | |
| 2585 { | |
| 2586 /* Add this prefix to the function: | |
| 2587 * static int gate; | |
| 2588 * if (--gate != 0) return; | |
| 2589 * Increment gate during constructor execution. | |
| 2590 * Note that this is not thread safe; should not have threads | |
| 2591 * during static destruction. | |
| 2592 */ | |
| 2593 Identifier *id = Lexer::idPool("__gate"); | |
| 2594 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 2595 v->storage_class = STCstatic; | |
| 2596 Statements *sa = new Statements(); | |
| 2597 Statement *s = new DeclarationStatement(0, v); | |
| 2598 sa->push(s); | |
| 2599 Expression *e = new IdentifierExp(0, id); | |
|
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
891
diff
changeset
|
2600 e = new AddAssignExp(0, e, new IntegerExp((uint64_t)-1)); |
|
658
50383e476c7e
Upgraded frontend to DMD 1.035
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
644
diff
changeset
|
2601 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(0)); |
| 336 | 2602 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); |
| 2603 sa->push(s); | |
| 2604 if (fbody) | |
| 2605 sa->push(fbody); | |
| 2606 fbody = new CompoundStatement(0, sa); | |
| 2607 vgate = v; | |
| 2608 } | |
| 2609 | |
| 159 | 2610 FuncDeclaration::semantic(sc); |
| 2611 | |
| 2612 // We're going to need ModuleInfo | |
| 2613 Module *m = getModule(); | |
| 2614 if (!m) | |
| 2615 m = sc->module; | |
| 2616 if (m) | |
| 2617 { m->needmoduleinfo = 1; | |
| 2618 #ifdef IN_GCC | |
| 2619 m->strictlyneedmoduleinfo = 1; | |
| 2620 #endif | |
| 2621 } | |
| 2622 } | |
| 2623 | |
| 2624 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
| 2625 { | |
| 2626 return NULL; | |
| 2627 } | |
| 2628 | |
| 2629 int StaticDtorDeclaration::isStaticDestructor() | |
| 2630 { | |
| 2631 return TRUE; | |
| 2632 } | |
| 2633 | |
| 2634 int StaticDtorDeclaration::isVirtual() | |
| 2635 { | |
| 2636 return FALSE; | |
| 2637 } | |
| 2638 | |
| 2639 int StaticDtorDeclaration::addPreInvariant() | |
| 2640 { | |
| 2641 return FALSE; | |
| 2642 } | |
| 2643 | |
| 2644 int StaticDtorDeclaration::addPostInvariant() | |
| 2645 { | |
| 2646 return FALSE; | |
| 2647 } | |
| 2648 | |
| 2649 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2650 { | |
| 2651 if (hgs->hdrgen) | |
| 2652 return; | |
| 2653 buf->writestring("static ~this()"); | |
| 2654 bodyToCBuffer(buf, hgs); | |
| 2655 } | |
| 2656 | |
| 2657 /********************************* InvariantDeclaration ****************************/ | |
| 2658 | |
| 2659 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
| 2660 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
| 2661 { | |
| 2662 } | |
| 2663 | |
| 2664 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
| 2665 { | |
| 2666 InvariantDeclaration *id; | |
| 2667 | |
| 2668 assert(!s); | |
| 2669 id = new InvariantDeclaration(loc, endloc); | |
| 2670 FuncDeclaration::syntaxCopy(id); | |
| 2671 return id; | |
| 2672 } | |
| 2673 | |
| 2674 | |
| 2675 void InvariantDeclaration::semantic(Scope *sc) | |
| 2676 { | |
| 2677 AggregateDeclaration *ad; | |
| 2678 Type *tret; | |
| 2679 | |
| 2680 parent = sc->parent; | |
| 2681 Dsymbol *parent = toParent(); | |
| 2682 ad = parent->isAggregateDeclaration(); | |
| 2683 if (!ad) | |
| 2684 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
957
diff
changeset
|
2685 error("invariants are only for struct/union/class definitions"); |
| 159 | 2686 return; |
| 2687 } | |
| 2688 else if (ad->inv && ad->inv != this) | |
| 2689 { | |
| 2690 error("more than one invariant for %s", ad->toChars()); | |
| 2691 } | |
| 2692 ad->inv = this; | |
| 2693 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2694 | |
| 2695 sc = sc->push(); | |
| 2696 sc->stc &= ~STCstatic; // not a static invariant | |
| 2697 sc->incontract++; | |
| 2698 sc->linkage = LINKd; | |
| 2699 | |
| 2700 FuncDeclaration::semantic(sc); | |
| 2701 | |
| 2702 sc->pop(); | |
| 2703 } | |
| 2704 | |
| 2705 int InvariantDeclaration::isVirtual() | |
| 2706 { | |
| 2707 return FALSE; | |
| 2708 } | |
| 2709 | |
| 2710 int InvariantDeclaration::addPreInvariant() | |
| 2711 { | |
| 2712 return FALSE; | |
| 2713 } | |
| 2714 | |
| 2715 int InvariantDeclaration::addPostInvariant() | |
| 2716 { | |
| 2717 return FALSE; | |
| 2718 } | |
| 2719 | |
| 2720 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2721 { | |
| 2722 if (hgs->hdrgen) | |
| 2723 return; | |
| 2724 buf->writestring("invariant"); | |
| 2725 bodyToCBuffer(buf, hgs); | |
| 2726 } | |
| 2727 | |
| 2728 | |
| 2729 /********************************* UnitTestDeclaration ****************************/ | |
| 2730 | |
| 2731 /******************************* | |
| 2732 * Generate unique unittest function Id so we can have multiple | |
| 2733 * instances per module. | |
| 2734 */ | |
| 2735 | |
| 2736 static Identifier *unitTestId() | |
| 2737 { | |
| 336 | 2738 return Lexer::uniqueId("__unittest"); |
| 159 | 2739 } |
| 2740 | |
| 2741 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
| 2742 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
| 2743 { | |
| 2744 } | |
| 2745 | |
| 2746 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
| 2747 { | |
| 2748 UnitTestDeclaration *utd; | |
| 2749 | |
| 2750 assert(!s); | |
| 2751 utd = new UnitTestDeclaration(loc, endloc); | |
| 2752 return FuncDeclaration::syntaxCopy(utd); | |
| 2753 } | |
| 2754 | |
| 2755 | |
| 2756 void UnitTestDeclaration::semantic(Scope *sc) | |
| 2757 { | |
| 2758 if (global.params.useUnitTests) | |
| 2759 { | |
| 2760 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
|
846
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
717
diff
changeset
|
2761 Scope *sc2 = sc->push(); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
717
diff
changeset
|
2762 sc2->linkage = LINKd; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
717
diff
changeset
|
2763 FuncDeclaration::semantic(sc2); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
717
diff
changeset
|
2764 sc2->pop(); |
| 159 | 2765 } |
| 2766 | |
| 2767 // We're going to need ModuleInfo even if the unit tests are not | |
| 2768 // compiled in, because other modules may import this module and refer | |
| 2769 // to this ModuleInfo. | |
| 2770 Module *m = getModule(); | |
| 2771 if (!m) | |
| 2772 m = sc->module; | |
| 2773 if (m) | |
| 2774 m->needmoduleinfo = 1; | |
| 2775 } | |
| 2776 | |
| 2777 AggregateDeclaration *UnitTestDeclaration::isThis() | |
| 2778 { | |
| 2779 return NULL; | |
| 2780 } | |
| 2781 | |
| 2782 int UnitTestDeclaration::isVirtual() | |
| 2783 { | |
| 2784 return FALSE; | |
| 2785 } | |
| 2786 | |
| 2787 int UnitTestDeclaration::addPreInvariant() | |
| 2788 { | |
| 2789 return FALSE; | |
| 2790 } | |
| 2791 | |
| 2792 int UnitTestDeclaration::addPostInvariant() | |
| 2793 { | |
| 2794 return FALSE; | |
| 2795 } | |
| 2796 | |
| 2797 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2798 { | |
| 2799 if (hgs->hdrgen) | |
| 2800 return; | |
| 2801 buf->writestring("unittest"); | |
| 2802 bodyToCBuffer(buf, hgs); | |
| 2803 } | |
| 2804 | |
| 2805 /********************************* NewDeclaration ****************************/ | |
| 2806 | |
| 2807 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2808 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) | |
| 2809 { | |
| 2810 this->arguments = arguments; | |
| 2811 this->varargs = varargs; | |
| 2812 } | |
| 2813 | |
| 2814 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
| 2815 { | |
| 2816 NewDeclaration *f; | |
| 2817 | |
| 2818 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
| 2819 | |
| 2820 FuncDeclaration::syntaxCopy(f); | |
| 2821 | |
| 2822 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2823 | |
| 2824 return f; | |
| 2825 } | |
| 2826 | |
| 2827 | |
| 2828 void NewDeclaration::semantic(Scope *sc) | |
| 2829 { | |
| 2830 ClassDeclaration *cd; | |
| 2831 Type *tret; | |
| 2832 | |
| 2833 //printf("NewDeclaration::semantic()\n"); | |
| 2834 | |
| 2835 parent = sc->parent; | |
| 2836 Dsymbol *parent = toParent(); | |
| 2837 cd = parent->isClassDeclaration(); | |
| 2838 if (!cd && !parent->isStructDeclaration()) | |
| 2839 { | |
| 2840 error("new allocators only are for class or struct definitions"); | |
| 2841 } | |
| 2842 tret = Type::tvoid->pointerTo(); | |
| 2843 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2844 | |
| 2845 type = type->semantic(loc, sc); | |
| 2846 assert(type->ty == Tfunction); | |
| 2847 | |
| 2848 // Check that there is at least one argument of type uint | |
| 2849 TypeFunction *tf = (TypeFunction *)type; | |
| 2850 if (Argument::dim(tf->parameters) < 1) | |
| 2851 { | |
|
891
ea82e2077f9d
Change custom allocator new size argument to size_t instead of uint. See #175.
Christian Kamm <kamm incasoftware de>
parents:
875
diff
changeset
|
2852 error("at least one argument of type size_t expected"); |
| 159 | 2853 } |
| 2854 else | |
| 2855 { | |
| 2856 Argument *a = Argument::getNth(tf->parameters, 0); | |
|
891
ea82e2077f9d
Change custom allocator new size argument to size_t instead of uint. See #175.
Christian Kamm <kamm incasoftware de>
parents:
875
diff
changeset
|
2857 if (!a->type->equals(Type::tsize_t)) |
|
ea82e2077f9d
Change custom allocator new size argument to size_t instead of uint. See #175.
Christian Kamm <kamm incasoftware de>
parents:
875
diff
changeset
|
2858 error("first argument must be type size_t, not %s", a->type->toChars()); |
| 159 | 2859 } |
| 2860 | |
| 2861 FuncDeclaration::semantic(sc); | |
| 2862 } | |
| 2863 | |
| 336 | 2864 const char *NewDeclaration::kind() |
| 159 | 2865 { |
| 2866 return "allocator"; | |
| 2867 } | |
| 2868 | |
| 2869 int NewDeclaration::isVirtual() | |
| 2870 { | |
| 2871 return FALSE; | |
| 2872 } | |
| 2873 | |
| 2874 int NewDeclaration::addPreInvariant() | |
| 2875 { | |
| 2876 return FALSE; | |
| 2877 } | |
| 2878 | |
| 2879 int NewDeclaration::addPostInvariant() | |
| 2880 { | |
| 2881 return FALSE; | |
| 2882 } | |
| 2883 | |
| 2884 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2885 { | |
| 2886 buf->writestring("new"); | |
| 2887 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2888 bodyToCBuffer(buf, hgs); | |
| 2889 } | |
| 2890 | |
| 2891 | |
| 2892 /********************************* DeleteDeclaration ****************************/ | |
| 2893 | |
| 2894 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments) | |
| 2895 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) | |
| 2896 { | |
| 2897 this->arguments = arguments; | |
| 2898 } | |
| 2899 | |
| 2900 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
| 2901 { | |
| 2902 DeleteDeclaration *f; | |
| 2903 | |
| 2904 f = new DeleteDeclaration(loc, endloc, NULL); | |
| 2905 | |
| 2906 FuncDeclaration::syntaxCopy(f); | |
| 2907 | |
| 2908 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2909 | |
| 2910 return f; | |
| 2911 } | |
| 2912 | |
| 2913 | |
| 2914 void DeleteDeclaration::semantic(Scope *sc) | |
| 2915 { | |
| 2916 ClassDeclaration *cd; | |
| 2917 | |
| 2918 //printf("DeleteDeclaration::semantic()\n"); | |
| 2919 | |
| 2920 parent = sc->parent; | |
| 2921 Dsymbol *parent = toParent(); | |
| 2922 cd = parent->isClassDeclaration(); | |
| 2923 if (!cd && !parent->isStructDeclaration()) | |
| 2924 { | |
| 2925 error("new allocators only are for class or struct definitions"); | |
| 2926 } | |
| 2927 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
| 2928 | |
| 2929 type = type->semantic(loc, sc); | |
| 2930 assert(type->ty == Tfunction); | |
| 2931 | |
| 2932 // Check that there is only one argument of type void* | |
| 2933 TypeFunction *tf = (TypeFunction *)type; | |
| 2934 if (Argument::dim(tf->parameters) != 1) | |
| 2935 { | |
| 2936 error("one argument of type void* expected"); | |
| 2937 } | |
| 2938 else | |
| 2939 { | |
| 2940 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2941 if (!a->type->equals(Type::tvoid->pointerTo())) | |
| 2942 error("one argument of type void* expected, not %s", a->type->toChars()); | |
| 2943 } | |
| 2944 | |
| 2945 FuncDeclaration::semantic(sc); | |
| 2946 } | |
| 2947 | |
| 336 | 2948 const char *DeleteDeclaration::kind() |
| 159 | 2949 { |
| 2950 return "deallocator"; | |
| 2951 } | |
| 2952 | |
| 2953 int DeleteDeclaration::isDelete() | |
| 2954 { | |
| 2955 return TRUE; | |
| 2956 } | |
| 2957 | |
| 2958 int DeleteDeclaration::isVirtual() | |
| 2959 { | |
| 2960 return FALSE; | |
| 2961 } | |
| 2962 | |
| 2963 int DeleteDeclaration::addPreInvariant() | |
| 2964 { | |
| 2965 return FALSE; | |
| 2966 } | |
| 2967 | |
| 2968 int DeleteDeclaration::addPostInvariant() | |
| 2969 { | |
| 2970 return FALSE; | |
| 2971 } | |
| 2972 | |
| 2973 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2974 { | |
| 2975 buf->writestring("delete"); | |
| 2976 Argument::argsToCBuffer(buf, hgs, arguments, 0); | |
| 2977 bodyToCBuffer(buf, hgs); | |
| 2978 } | |
| 2979 | |
| 2980 | |
| 2981 | |
| 2982 |