Mercurial > projects > ldc
annotate dmd/func.c @ 108:288fe1029e1f trunk
[svn r112] Fixed 'case 1,2,3:' style case statements.
Fixed a bunch of bugs with return/break/continue in loops.
Fixed support for the DMDFE hidden implicit return value variable. This can be needed for some foreach statements where the loop body is converted to a nested delegate, but also possibly returns from the function.
Added std.math to phobos.
Added AA runtime support code, done ground work for implementing AAs.
Several other bugfixes.
| author | lindquist |
|---|---|
| date | Tue, 20 Nov 2007 05:29:20 +0100 |
| parents | 5071469303d4 |
| children | 9c79b61fb638 |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2007 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 this->storage_class = storage_class; | |
| 39 this->type = type; | |
| 40 this->loc = loc; | |
| 41 this->endloc = endloc; | |
| 42 fthrows = NULL; | |
| 43 frequire = NULL; | |
| 44 outId = NULL; | |
| 45 vresult = NULL; | |
| 46 returnLabel = NULL; | |
| 47 fensure = NULL; | |
| 48 fbody = NULL; | |
| 49 localsymtab = NULL; | |
| 50 vthis = NULL; | |
| 51 v_arguments = NULL; | |
| 52 #if IN_GCC | |
| 53 v_argptr = NULL; | |
| 54 #endif | |
| 55 parameters = NULL; | |
| 56 labtab = NULL; | |
| 57 overnext = NULL; | |
| 58 vtblIndex = -1; | |
| 59 hasReturnExp = 0; | |
| 60 naked = 0; | |
| 61 inlineStatus = ILSuninitialized; | |
| 62 inlineNest = 0; | |
| 63 inlineAsm = 0; | |
| 64 cantInterpret = 0; | |
| 65 semanticRun = 0; | |
| 66 nestedFrameRef = 0; | |
| 67 fes = NULL; | |
| 68 introducing = 0; | |
| 69 tintro = NULL; | |
| 70 inferRetType = (type && type->nextOf() == NULL); | |
| 71 scope = NULL; | |
| 72 hasReturnExp = 0; | |
| 73 nrvo_can = 1; | |
| 74 nrvo_var = NULL; | |
| 75 shidden = NULL; | |
|
11
d3ee9efe20e2
[svn r15] * Fixed a bunch problems with virtual calls. Seems I did some rather poor testing.
lindquist
parents:
1
diff
changeset
|
76 llvmQueued = false; |
|
15
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
parents:
11
diff
changeset
|
77 llvmThisVar = NULL; |
|
50
6fcc08a4d406
[svn r54] Added support for nested delegates referencing parent's stack variables.
lindquist
parents:
35
diff
changeset
|
78 llvmNested = NULL; |
|
57
a9d29e9f1fed
[svn r61] Added support for D-style variadic functions :)
lindquist
parents:
50
diff
changeset
|
79 llvmArguments = NULL; |
|
a9d29e9f1fed
[svn r61] Added support for D-style variadic functions :)
lindquist
parents:
50
diff
changeset
|
80 llvmArgPtr = NULL; |
|
82
d8dd47ef3973
[svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
lindquist
parents:
57
diff
changeset
|
81 llvmDwarfSubProgram = NULL; |
|
86
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
82
diff
changeset
|
82 llvmRunTimeHack = false; |
| 100 | 83 llvmIRFunc = NULL; |
| 1 | 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 | |
| 100 return f; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 // Do the semantic analysis on the external interface to the function. | |
| 105 | |
| 106 void FuncDeclaration::semantic(Scope *sc) | |
| 107 { TypeFunction *f; | |
| 108 StructDeclaration *sd; | |
| 109 ClassDeclaration *cd; | |
| 110 InterfaceDeclaration *id; | |
| 111 | |
| 112 #if 0 | |
| 113 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
| 114 if (isFuncLiteralDeclaration()) | |
| 115 printf("\tFuncLiteralDeclaration()\n"); | |
| 116 printf("sc->parent = %s\n", sc->parent->toChars()); | |
| 117 printf("type: %s\n", type->toChars()); | |
| 118 #endif | |
| 119 | |
| 120 if (type->nextOf()) | |
| 121 type = type->semantic(loc, sc); | |
| 122 //type->print(); | |
| 123 if (type->ty != Tfunction) | |
| 124 { | |
| 125 error("%s must be a function", toChars()); | |
| 126 return; | |
| 127 } | |
| 128 f = (TypeFunction *)(type); | |
| 129 size_t nparams = Argument::dim(f->parameters); | |
| 130 | |
| 131 linkage = sc->linkage; | |
| 132 // if (!parent) | |
| 133 { | |
| 134 //parent = sc->scopesym; | |
| 135 parent = sc->parent; | |
| 136 } | |
| 137 protection = sc->protection; | |
| 138 storage_class |= sc->stc; | |
| 139 //printf("function storage_class = x%x\n", storage_class); | |
| 140 Dsymbol *parent = toParent(); | |
| 141 | |
| 142 if (isConst() || isAuto() || isScope()) | |
| 143 error("functions cannot be const or auto"); | |
| 144 | |
| 145 if (isAbstract() && !isVirtual()) | |
| 146 error("non-virtual functions cannot be abstract"); | |
| 147 #if 0 | |
| 148 if (isAbstract() && fbody) | |
| 149 error("abstract functions cannot have bodies"); | |
| 150 #endif | |
| 151 | |
| 152 #if 0 | |
| 153 if (isStaticConstructor() || isStaticDestructor()) | |
| 154 { | |
| 155 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
| 156 error("static constructors / destructors must be static void"); | |
| 157 if (f->arguments && f->arguments->dim) | |
| 158 error("static constructors / destructors must have empty parameter list"); | |
| 159 // BUG: check for invalid storage classes | |
| 160 } | |
| 161 #endif | |
| 162 | |
| 163 #ifdef IN_GCC | |
| 164 AggregateDeclaration *ad; | |
| 165 | |
| 166 ad = parent->isAggregateDeclaration(); | |
| 167 if (ad) | |
| 168 ad->methods.push(this); | |
| 169 #endif | |
| 170 sd = parent->isStructDeclaration(); | |
| 171 if (sd) | |
| 172 { | |
| 173 // Verify no constructors, destructors, etc. | |
| 174 if (isCtorDeclaration() || | |
| 175 isDtorDeclaration() | |
| 176 //|| isInvariantDeclaration() | |
| 177 //|| isUnitTestDeclaration() | |
| 178 ) | |
| 179 { | |
| 180 error("special member functions not allowed for %ss", sd->kind()); | |
| 181 } | |
| 182 | |
| 183 #if 0 | |
| 184 if (!sd->inv) | |
| 185 sd->inv = isInvariantDeclaration(); | |
| 186 | |
| 187 if (!sd->aggNew) | |
| 188 sd->aggNew = isNewDeclaration(); | |
| 189 | |
| 190 if (isDelete()) | |
| 191 { | |
| 192 if (sd->aggDelete) | |
| 193 error("multiple delete's for struct %s", sd->toChars()); | |
| 194 sd->aggDelete = (DeleteDeclaration *)(this); | |
| 195 } | |
| 196 #endif | |
| 197 } | |
| 198 | |
| 199 id = parent->isInterfaceDeclaration(); | |
| 200 if (id) | |
| 201 { | |
| 202 storage_class |= STCabstract; | |
| 203 | |
| 204 if (isCtorDeclaration() || | |
| 205 isDtorDeclaration() || | |
| 206 isInvariantDeclaration() || | |
| 207 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 208 error("special function not allowed in interface %s", id->toChars()); | |
| 209 if (fbody) | |
| 210 error("function body is not abstract in interface %s", id->toChars()); | |
| 211 } | |
| 212 | |
| 213 cd = parent->isClassDeclaration(); | |
| 214 if (cd) | |
| 215 { int vi; | |
| 216 CtorDeclaration *ctor; | |
| 217 DtorDeclaration *dtor; | |
| 218 InvariantDeclaration *inv; | |
| 219 | |
| 220 if (isCtorDeclaration()) | |
| 221 { | |
| 222 // ctor = (CtorDeclaration *)this; | |
| 223 // if (!cd->ctor) | |
| 224 // cd->ctor = ctor; | |
| 225 return; | |
| 226 } | |
| 227 | |
| 228 #if 0 | |
| 229 dtor = isDtorDeclaration(); | |
| 230 if (dtor) | |
| 231 { | |
| 232 if (cd->dtor) | |
| 233 error("multiple destructors for class %s", cd->toChars()); | |
| 234 cd->dtor = dtor; | |
| 235 } | |
| 236 | |
| 237 inv = isInvariantDeclaration(); | |
| 238 if (inv) | |
| 239 { | |
| 240 cd->inv = inv; | |
| 241 } | |
| 242 | |
| 243 if (isNewDeclaration()) | |
| 244 { | |
| 245 if (!cd->aggNew) | |
| 246 cd->aggNew = (NewDeclaration *)(this); | |
| 247 } | |
| 248 | |
| 249 if (isDelete()) | |
| 250 { | |
| 251 if (cd->aggDelete) | |
| 252 error("multiple delete's for class %s", cd->toChars()); | |
| 253 cd->aggDelete = (DeleteDeclaration *)(this); | |
| 254 } | |
| 255 #endif | |
| 256 | |
| 257 if (storage_class & STCabstract) | |
| 258 cd->isabstract = 1; | |
| 259 | |
| 260 // if static function, do not put in vtbl[] | |
| 261 if (!isVirtual()) | |
| 262 { | |
| 263 //printf("\tnot virtual\n"); | |
| 19 | 264 goto Ldone; |
| 1 | 265 } |
| 266 | |
| 267 // Find index of existing function in vtbl[] to override | |
| 268 if (cd->baseClass) | |
| 269 { | |
| 270 for (vi = 0; vi < cd->baseClass->vtbl.dim; vi++) | |
| 271 { | |
| 272 FuncDeclaration *fdv = ((Dsymbol *)cd->vtbl.data[vi])->isFuncDeclaration(); | |
| 273 | |
| 274 // BUG: should give error if argument types match, | |
| 275 // but return type does not? | |
| 276 | |
| 277 //printf("\tvtbl[%d] = '%s'\n", vi, fdv ? fdv->ident->toChars() : ""); | |
| 278 if (fdv && fdv->ident == ident) | |
| 279 { | |
| 280 int cov = type->covariant(fdv->type); | |
| 281 //printf("\tbaseclass cov = %d\n", cov); | |
| 282 if (cov == 2) | |
| 283 { | |
| 284 //type->print(); | |
| 285 //fdv->type->print(); | |
| 286 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 287 error("of type %s overrides but is not covariant with %s of type %s", | |
| 288 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 289 } | |
| 290 if (cov == 1) | |
| 291 { | |
| 292 if (fdv->isFinal()) | |
| 293 error("cannot override final function %s", fdv->toPrettyChars()); | |
| 294 if (fdv->toParent() == parent) | |
| 295 { | |
| 296 // If both are mixins, then error. | |
| 297 // If either is not, the one that is not overrides | |
| 298 // the other. | |
| 299 if (fdv->parent->isClassDeclaration()) | |
| 300 goto L1; | |
| 301 if (!this->parent->isClassDeclaration() | |
| 302 #if !BREAKABI | |
| 303 && !isDtorDeclaration() | |
| 304 #endif | |
| 305 ) | |
| 306 error("multiple overrides of same function"); | |
| 307 } | |
| 308 cd->vtbl.data[vi] = (void *)this; | |
| 309 vtblIndex = vi; | |
| 310 | |
| 311 /* This works by whenever this function is called, | |
| 312 * it actually returns tintro, which gets dynamically | |
| 313 * cast to type. But we know that tintro is a base | |
| 314 * of type, so we could optimize it by not doing a | |
| 315 * dynamic cast, but just subtracting the isBaseOf() | |
| 316 * offset if the value is != null. | |
| 317 */ | |
| 318 | |
| 319 if (fdv->tintro) | |
| 320 tintro = fdv->tintro; | |
| 321 else if (!type->equals(fdv->type)) | |
| 322 { | |
| 323 /* Only need to have a tintro if the vptr | |
| 324 * offsets differ | |
| 325 */ | |
| 326 int offset; | |
| 327 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 328 { | |
| 329 tintro = fdv->type; | |
| 330 } | |
| 331 } | |
| 332 goto L1; | |
| 333 } | |
| 334 if (cov == 3) | |
| 335 { | |
| 336 cd->sizeok = 2; // can't finish due to forward reference | |
| 337 return; | |
| 338 } | |
| 339 } | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 // This is an 'introducing' function. | |
| 344 | |
| 345 // Verify this doesn't override previous final function | |
| 346 if (cd->baseClass) | |
| 347 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
| 348 if (s) | |
| 349 { | |
| 350 FuncDeclaration *f = s->isFuncDeclaration(); | |
| 351 f = f->overloadExactMatch(type); | |
| 352 if (f && f->isFinal() && f->prot() != PROTprivate) | |
| 353 error("cannot override final function %s", f->toPrettyChars()); | |
| 354 } | |
| 355 } | |
| 356 | |
| 357 if (isFinal()) | |
| 358 { | |
| 359 cd->vtblFinal.push(this); | |
| 360 } | |
| 361 else | |
| 362 { | |
| 363 // Append to end of vtbl[] | |
| 364 //printf("\tintroducing function\n"); | |
| 365 introducing = 1; | |
| 366 vi = cd->vtbl.dim; | |
| 367 cd->vtbl.push(this); | |
| 368 vtblIndex = vi; | |
| 369 } | |
| 370 | |
| 371 L1: ; | |
| 372 | |
| 373 /* Go through all the interface bases. | |
| 374 * If this function is covariant with any members of those interface | |
| 375 * functions, set the tintro. | |
| 376 */ | |
| 377 for (int i = 0; i < cd->interfaces_dim; i++) | |
| 378 { | |
| 379 BaseClass *b = cd->interfaces[i]; | |
| 380 for (vi = 0; vi < b->base->vtbl.dim; vi++) | |
| 381 { | |
| 382 Dsymbol *s = (Dsymbol *)b->base->vtbl.data[vi]; | |
| 383 //printf("interface %d vtbl[%d] %p %s\n", i, vi, s, s->toChars()); | |
| 384 FuncDeclaration *fdv = s->isFuncDeclaration(); | |
| 385 if (fdv && fdv->ident == ident) | |
| 386 { | |
| 387 int cov = type->covariant(fdv->type); | |
| 388 //printf("\tcov = %d\n", cov); | |
| 389 if (cov == 2) | |
| 390 { | |
| 391 //type->print(); | |
| 392 //fdv->type->print(); | |
| 393 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 394 error("of type %s overrides but is not covariant with %s of type %s", | |
| 395 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 396 } | |
| 397 if (cov == 1) | |
| 398 { Type *ti = NULL; | |
| 399 | |
| 400 if (fdv->tintro) | |
| 401 ti = fdv->tintro; | |
| 402 else if (!type->equals(fdv->type)) | |
| 403 { | |
| 404 /* Only need to have a tintro if the vptr | |
| 405 * offsets differ | |
| 406 */ | |
| 407 int offset; | |
| 408 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 409 { | |
| 410 ti = fdv->type; | |
| 411 #if 0 | |
| 412 if (offset) | |
| 413 ti = fdv->type; | |
| 19 | 414 else if (type->nextOf()->ty == Tclass) |
| 415 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 1 | 416 if (cdn && cdn->sizeok != 1) |
| 417 ti = fdv->type; | |
| 418 } | |
| 419 #endif | |
| 420 } | |
| 421 } | |
| 422 if (ti) | |
| 423 { | |
| 424 if (tintro && !tintro->equals(ti)) | |
| 425 { | |
| 426 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 427 } | |
| 428 tintro = ti; | |
| 429 } | |
| 430 goto L2; | |
| 431 } | |
| 432 if (cov == 3) | |
| 433 { | |
| 434 cd->sizeok = 2; // can't finish due to forward reference | |
| 435 return; | |
| 436 } | |
| 437 } | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 if (introducing && isOverride()) | |
| 442 { | |
| 443 error("function %s does not override any", toChars()); | |
| 444 } | |
| 445 | |
| 446 L2: ; | |
| 447 } | |
| 448 else if (isOverride() && !parent->isTemplateInstance()) | |
| 449 error("override only applies to class member functions"); | |
| 450 | |
| 451 /* Do not allow template instances to add virtual functions | |
| 452 * to a class. | |
| 453 */ | |
| 454 if (isVirtual()) | |
| 455 { | |
| 456 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 457 if (ti) | |
| 458 { | |
| 459 // Take care of nested templates | |
| 460 while (1) | |
| 461 { | |
| 462 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 463 if (!ti2) | |
| 464 break; | |
| 465 ti = ti2; | |
| 466 } | |
| 467 | |
| 468 // If it's a member template | |
| 469 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
| 470 if (cd) | |
| 471 { | |
| 472 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
| 473 } | |
| 474 } | |
| 475 } | |
| 476 | |
| 477 if (isMain()) | |
| 478 { | |
| 479 // Check parameters to see if they are either () or (char[][] args) | |
| 480 switch (nparams) | |
| 481 { | |
| 482 case 0: | |
| 483 break; | |
| 484 | |
| 485 case 1: | |
| 486 { | |
| 487 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 488 if (arg0->type->ty != Tarray || | |
| 19 | 489 arg0->type->nextOf()->ty != Tarray || |
| 490 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
| 1 | 491 arg0->storageClass & (STCout | STCref | STClazy)) |
| 492 goto Lmainerr; | |
| 493 break; | |
| 494 } | |
| 495 | |
| 496 default: | |
| 497 goto Lmainerr; | |
| 498 } | |
| 499 | |
| 500 if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
| 501 error("must return int or void, not %s", f->nextOf()->toChars()); | |
| 502 if (f->varargs) | |
| 503 { | |
| 504 Lmainerr: | |
| 505 error("parameters must be main() or main(char[][] args)"); | |
| 506 } | |
| 507 } | |
| 508 | |
| 509 if (ident == Id::assign && (sd || cd)) | |
| 510 { // Disallow identity assignment operator. | |
| 511 | |
| 512 // opAssign(...) | |
| 513 if (nparams == 0) | |
| 514 { if (f->varargs == 1) | |
| 515 goto Lassignerr; | |
| 516 } | |
| 517 else | |
| 518 { | |
| 519 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 520 Type *t0 = arg0->type->toBasetype(); | |
| 521 Type *tb = sd ? sd->type : cd->type; | |
| 522 if (arg0->type->implicitConvTo(tb) || | |
| 523 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
| 524 ) | |
| 525 { | |
| 526 if (nparams == 1) | |
| 527 goto Lassignerr; | |
| 528 Argument *arg1 = Argument::getNth(f->parameters, 1); | |
| 529 if (arg1->defaultArg) | |
| 530 goto Lassignerr; | |
| 531 } | |
| 532 } | |
| 533 } | |
| 534 | |
| 19 | 535 Ldone: |
| 1 | 536 /* Save scope for possible later use (if we need the |
| 537 * function internals) | |
| 538 */ | |
| 539 scope = new Scope(*sc); | |
| 540 scope->setNoFree(); | |
| 541 return; | |
| 542 | |
| 543 Lassignerr: | |
| 544 error("identity assignment operator overload is illegal"); | |
| 545 } | |
| 546 | |
| 547 void FuncDeclaration::semantic2(Scope *sc) | |
| 548 { | |
| 549 } | |
| 550 | |
| 551 // Do the semantic analysis on the internals of the function. | |
| 552 | |
| 553 void FuncDeclaration::semantic3(Scope *sc) | |
| 554 { TypeFunction *f; | |
| 555 AggregateDeclaration *ad; | |
| 556 VarDeclaration *argptr = NULL; | |
| 557 VarDeclaration *_arguments = NULL; | |
| 558 | |
| 559 if (!parent) | |
| 560 { | |
| 92 | 561 if (global.errors) |
| 562 return; | |
| 1 | 563 printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); |
| 564 assert(0); | |
| 565 } | |
| 566 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p)\n", parent->toChars(), toChars(), sc); | |
| 567 //fflush(stdout); | |
| 568 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 569 //printf("\tlinkage = %d\n", sc->linkage); | |
| 570 | |
| 571 //printf(" sc->incontract = %d\n", sc->incontract); | |
| 572 if (semanticRun) | |
| 573 return; | |
| 574 semanticRun = 1; | |
| 575 | |
| 576 if (!type || type->ty != Tfunction) | |
| 577 return; | |
| 578 f = (TypeFunction *)(type); | |
| 579 size_t nparams = Argument::dim(f->parameters); | |
| 580 | |
| 581 // Check the 'throws' clause | |
| 582 if (fthrows) | |
| 583 { int i; | |
| 584 | |
| 585 for (i = 0; i < fthrows->dim; i++) | |
| 586 { | |
| 587 Type *t = (Type *)fthrows->data[i]; | |
| 588 | |
| 589 t = t->semantic(loc, sc); | |
| 590 if (!t->isClassHandle()) | |
| 591 error("can only throw classes, not %s", t->toChars()); | |
| 592 } | |
| 593 } | |
| 594 | |
| 595 if (fbody || frequire) | |
| 596 { | |
| 597 // Establish function scope | |
| 598 ScopeDsymbol *ss; | |
| 599 Scope *sc2; | |
| 600 | |
| 601 localsymtab = new DsymbolTable(); | |
| 602 | |
| 603 ss = new ScopeDsymbol(); | |
| 604 ss->parent = sc->scopesym; | |
| 605 sc2 = sc->push(ss); | |
| 606 sc2->func = this; | |
| 607 sc2->parent = this; | |
| 608 sc2->callSuper = 0; | |
| 609 sc2->sbreak = NULL; | |
| 610 sc2->scontinue = NULL; | |
| 611 sc2->sw = NULL; | |
| 612 sc2->fes = fes; | |
| 613 sc2->linkage = LINKd; | |
| 614 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated); | |
| 615 sc2->protection = PROTpublic; | |
| 616 sc2->explicitProtection = 0; | |
| 617 sc2->structalign = 8; | |
| 618 sc2->incontract = 0; | |
| 619 sc2->tf = NULL; | |
| 620 sc2->noctor = 0; | |
| 621 | |
| 622 // Declare 'this' | |
| 623 ad = isThis(); | |
| 624 if (ad) | |
| 625 { VarDeclaration *v; | |
| 626 | |
| 627 if (isFuncLiteralDeclaration() && isNested()) | |
| 628 { | |
| 629 error("literals cannot be class members"); | |
| 630 return; | |
| 631 } | |
| 632 else | |
| 633 { | |
| 634 assert(!isNested()); // can't be both member and nested | |
| 635 assert(ad->handle); | |
| 636 v = new ThisDeclaration(ad->handle); | |
| 637 v->storage_class |= STCparameter | STCin; | |
| 638 v->semantic(sc2); | |
| 639 if (!sc2->insert(v)) | |
| 640 assert(0); | |
| 641 v->parent = this; | |
| 642 vthis = v; | |
| 643 } | |
| 644 } | |
| 645 else if (isNested()) | |
| 646 { | |
| 647 VarDeclaration *v; | |
| 648 | |
| 649 v = new ThisDeclaration(Type::tvoid->pointerTo()); | |
| 650 v->storage_class |= STCparameter | STCin; | |
| 651 v->semantic(sc2); | |
| 652 if (!sc2->insert(v)) | |
| 653 assert(0); | |
| 654 v->parent = this; | |
| 655 vthis = v; | |
| 656 } | |
| 657 | |
| 658 // Declare hidden variable _arguments[] and _argptr | |
| 659 if (f->varargs == 1) | |
| 660 { Type *t; | |
| 661 | |
| 662 if (f->linkage == LINKd) | |
| 663 { // Declare _arguments[] | |
| 664 #if BREAKABI | |
| 665 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
| 666 v_arguments->storage_class = STCparameter | STCin; | |
| 667 v_arguments->semantic(sc2); | |
| 668 sc2->insert(v_arguments); | |
| 669 v_arguments->parent = this; | |
| 670 | |
| 671 t = Type::typeinfo->type->arrayOf(); | |
| 672 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 673 _arguments->semantic(sc2); | |
| 674 sc2->insert(_arguments); | |
| 675 _arguments->parent = this; | |
| 676 #else | |
| 677 t = Type::typeinfo->type->arrayOf(); | |
| 678 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 679 v_arguments->storage_class = STCparameter | STCin; | |
| 680 v_arguments->semantic(sc2); | |
| 681 sc2->insert(v_arguments); | |
| 682 v_arguments->parent = this; | |
| 683 #endif | |
| 684 } | |
| 685 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
| 686 { // Declare _argptr | |
| 687 #if IN_GCC | |
| 688 t = d_gcc_builtin_va_list_d_type; | |
| 689 #else | |
| 690 t = Type::tvoid->pointerTo(); | |
| 691 #endif | |
| 692 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
| 693 argptr->semantic(sc2); | |
| 694 sc2->insert(argptr); | |
| 695 argptr->parent = this; | |
| 696 } | |
| 697 } | |
| 698 | |
| 699 // Propagate storage class from tuple arguments to their sub-arguments. | |
| 700 if (f->parameters) | |
| 701 { | |
| 702 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 703 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 704 | |
| 705 if (arg->type->ty == Ttuple) | |
| 706 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 707 size_t dim = Argument::dim(t->arguments); | |
| 708 for (size_t j = 0; j < dim; j++) | |
| 709 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 710 narg->storageClass = arg->storageClass; | |
| 711 } | |
| 712 } | |
| 713 } | |
| 714 } | |
| 715 | |
| 716 // Declare all the function parameters as variables | |
| 717 if (nparams) | |
| 718 { // parameters[] has all the tuples removed, as the back end | |
| 719 // doesn't know about tuples | |
| 720 parameters = new Dsymbols(); | |
| 721 parameters->reserve(nparams); | |
| 722 for (size_t i = 0; i < nparams; i++) | |
| 723 { | |
| 724 Argument *arg = Argument::getNth(f->parameters, i); | |
| 725 Identifier *id = arg->ident; | |
| 726 if (!id) | |
| 727 { | |
| 728 //error("no identifier for parameter %d of %s", i + 1, toChars()); | |
| 729 OutBuffer buf; | |
| 730 buf.printf("_param_%zu", i); | |
| 731 char *name = (char *)buf.extractData(); | |
| 732 id = new Identifier(name, TOKidentifier); | |
| 733 arg->ident = id; | |
| 734 } | |
| 735 VarDeclaration *v = new VarDeclaration(0, arg->type, id, NULL); | |
| 736 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 737 v->storage_class |= STCparameter; | |
| 738 if (f->varargs == 2 && i + 1 == nparams) | |
| 739 v->storage_class |= STCvariadic; | |
| 740 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
| 741 if (v->storage_class & STClazy) | |
| 742 v->storage_class |= STCin; | |
| 743 v->semantic(sc2); | |
| 744 if (!sc2->insert(v)) | |
| 745 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 746 else | |
| 747 parameters->push(v); | |
| 748 localsymtab->insert(v); | |
| 749 v->parent = this; | |
| 750 // for llvm d | |
| 751 arg->vardecl = v; | |
| 752 } | |
| 753 } | |
| 754 | |
| 755 // Declare the tuple symbols and put them in the symbol table, | |
| 756 // but not in parameters[]. | |
| 757 if (f->parameters) | |
| 758 { | |
| 759 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 760 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 761 | |
| 762 if (!arg->ident) | |
| 763 continue; // never used, so ignore | |
| 764 if (arg->type->ty == Ttuple) | |
| 765 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 766 size_t dim = Argument::dim(t->arguments); | |
| 767 Objects *exps = new Objects(); | |
| 768 exps->setDim(dim); | |
| 769 for (size_t j = 0; j < dim; j++) | |
| 770 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 771 assert(narg->ident); | |
| 772 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
| 773 assert(v); | |
| 774 Expression *e = new VarExp(0, v); | |
| 775 exps->data[j] = (void *)e; | |
| 776 } | |
| 777 assert(arg->ident); | |
| 778 TupleDeclaration *v = new TupleDeclaration(0, arg->ident, exps); | |
| 779 //printf("declaring tuple %s\n", v->toChars()); | |
| 780 v->isexp = 1; | |
| 781 if (!sc2->insert(v)) | |
| 782 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 783 localsymtab->insert(v); | |
| 784 v->parent = this; | |
| 785 } | |
| 786 } | |
| 787 } | |
| 788 | |
| 789 sc2->incontract++; | |
| 790 | |
| 791 if (frequire) | |
| 792 { | |
| 793 // BUG: need to error if accessing out parameters | |
| 794 // BUG: need to treat parameters as const | |
| 795 // BUG: need to disallow returns and throws | |
| 796 // BUG: verify that all in and ref parameters are read | |
| 797 frequire = frequire->semantic(sc2); | |
| 798 labtab = NULL; // so body can't refer to labels | |
| 799 } | |
| 800 | |
| 801 if (fensure || addPostInvariant()) | |
| 802 { | |
| 803 ScopeDsymbol *sym; | |
| 804 | |
| 805 sym = new ScopeDsymbol(); | |
| 806 sym->parent = sc2->scopesym; | |
| 807 sc2 = sc2->push(sym); | |
| 808 | |
| 809 assert(type->nextOf()); | |
| 810 if (type->nextOf()->ty == Tvoid) | |
| 811 { | |
| 812 if (outId) | |
| 813 error("void functions have no result"); | |
| 814 } | |
| 815 else | |
| 816 { | |
| 817 if (!outId) | |
| 818 outId = Id::result; // provide a default | |
| 819 } | |
| 820 | |
| 821 if (outId) | |
| 822 { // Declare result variable | |
| 823 VarDeclaration *v; | |
| 824 Loc loc = this->loc; | |
| 825 | |
| 826 if (fensure) | |
| 827 loc = fensure->loc; | |
| 828 | |
| 829 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
| 830 v->noauto = 1; | |
| 831 sc2->incontract--; | |
| 832 v->semantic(sc2); | |
| 833 sc2->incontract++; | |
| 834 if (!sc2->insert(v)) | |
| 835 error("out result %s is already defined", v->toChars()); | |
| 836 v->parent = this; | |
| 837 vresult = v; | |
| 838 | |
| 839 // vresult gets initialized with the function return value | |
| 840 // in ReturnStatement::semantic() | |
| 841 } | |
| 842 | |
| 843 // BUG: need to treat parameters as const | |
| 844 // BUG: need to disallow returns and throws | |
| 845 if (fensure) | |
| 846 { fensure = fensure->semantic(sc2); | |
| 847 labtab = NULL; // so body can't refer to labels | |
| 848 } | |
| 849 | |
| 850 if (!global.params.useOut) | |
| 851 { fensure = NULL; // discard | |
| 852 vresult = NULL; | |
| 853 } | |
| 854 | |
| 855 // Postcondition invariant | |
| 856 if (addPostInvariant()) | |
| 857 { | |
| 858 Expression *e = NULL; | |
| 859 if (isCtorDeclaration()) | |
| 860 { | |
| 861 // Call invariant directly only if it exists | |
| 862 InvariantDeclaration *inv = ad->inv; | |
| 863 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 864 | |
| 865 while (!inv && cd) | |
| 866 { | |
| 867 cd = cd->baseClass; | |
| 868 if (!cd) | |
| 869 break; | |
| 870 inv = cd->inv; | |
| 871 } | |
| 872 if (inv) | |
| 873 { | |
| 874 e = new DsymbolExp(0, inv); | |
| 875 e = new CallExp(0, e); | |
| 876 e = e->semantic(sc2); | |
| 877 } | |
| 878 } | |
| 879 else | |
| 880 { // Call invariant virtually | |
| 881 ThisExp *v = new ThisExp(0); | |
| 882 v->type = vthis->type; | |
| 883 e = new AssertExp(0, v); | |
| 884 } | |
| 885 if (e) | |
| 886 { | |
| 887 ExpStatement *s = new ExpStatement(0, e); | |
| 888 if (fensure) | |
| 889 fensure = new CompoundStatement(0, s, fensure); | |
| 890 else | |
| 891 fensure = s; | |
| 892 } | |
| 893 } | |
| 894 | |
| 895 if (fensure) | |
| 896 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
| 897 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
| 898 ls->isReturnLabel = 1; | |
| 899 returnLabel->statement = ls; | |
| 900 } | |
| 901 sc2 = sc2->pop(); | |
| 902 } | |
| 903 | |
| 904 sc2->incontract--; | |
| 905 | |
| 906 if (fbody) | |
| 907 { ClassDeclaration *cd = isClassMember(); | |
| 908 | |
| 909 if (isCtorDeclaration() && cd) | |
| 910 { | |
| 911 for (int i = 0; i < cd->fields.dim; i++) | |
| 912 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 913 | |
| 914 v->ctorinit = 0; | |
| 915 } | |
| 916 } | |
| 917 | |
| 918 if (inferRetType || f->retStyle() != RETstack) | |
| 919 nrvo_can = 0; | |
| 920 | |
| 921 fbody = fbody->semantic(sc2); | |
| 922 | |
| 923 if (inferRetType) | |
| 924 { // If no return type inferred yet, then infer a void | |
| 925 if (!type->nextOf()) | |
| 926 { | |
| 927 type->next = Type::tvoid; | |
| 928 type = type->semantic(loc, sc); | |
| 929 } | |
| 930 f = (TypeFunction *)type; | |
| 931 } | |
| 932 | |
| 933 int offend = fbody ? fbody->fallOffEnd() : TRUE; | |
| 934 | |
| 935 if (isStaticCtorDeclaration()) | |
| 936 { /* It's a static constructor. Ensure that all | |
| 937 * ctor consts were initialized. | |
| 938 */ | |
| 939 | |
|
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940 Dsymbol *p = toParent(); |
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941 ScopeDsymbol *ad = p->isScopeDsymbol(); |
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942 if (!ad) |
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943 { |
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944 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); |
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945 } |
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946 else |
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947 { |
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948 for (int i = 0; i < ad->members->dim; i++) |
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949 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; |
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950 |
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951 s->checkCtorConstInit(); |
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952 } |
| 1 | 953 } |
| 954 } | |
| 955 | |
| 956 if (isCtorDeclaration() && cd) | |
| 957 { | |
| 958 //printf("callSuper = x%x\n", sc2->callSuper); | |
| 959 | |
| 960 // Verify that all the ctorinit fields got initialized | |
| 961 if (!(sc2->callSuper & CSXthis_ctor)) | |
| 962 { | |
| 963 for (int i = 0; i < cd->fields.dim; i++) | |
| 964 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 965 | |
| 966 if (v->ctorinit == 0 && v->isCtorinit()) | |
| 967 error("missing initializer for const field %s", v->toChars()); | |
| 968 } | |
| 969 } | |
| 970 | |
| 971 if (!(sc2->callSuper & CSXany_ctor) && | |
| 972 cd->baseClass && cd->baseClass->ctor) | |
| 973 { | |
| 974 sc2->callSuper = 0; | |
| 975 | |
| 976 // Insert implicit super() at start of fbody | |
| 977 Expression *e1 = new SuperExp(0); | |
| 978 Expression *e = new CallExp(0, e1); | |
| 979 | |
| 980 unsigned errors = global.errors; | |
| 981 global.gag++; | |
| 982 e = e->semantic(sc2); | |
| 983 global.gag--; | |
| 984 if (errors != global.errors) | |
| 985 error("no match for implicit super() call in constructor"); | |
| 986 | |
| 987 Statement *s = new ExpStatement(0, e); | |
| 988 fbody = new CompoundStatement(0, s, fbody); | |
| 989 } | |
| 990 } | |
| 991 else if (fes) | |
| 992 { // For foreach(){} body, append a return 0; | |
| 993 Expression *e = new IntegerExp(0); | |
| 994 Statement *s = new ReturnStatement(0, e); | |
| 995 fbody = new CompoundStatement(0, fbody, s); | |
| 996 assert(!returnLabel); | |
| 997 } | |
| 998 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
| 999 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
| 1000 else if (!inlineAsm) | |
| 1001 { | |
| 1002 if (type->nextOf()->ty == Tvoid) | |
| 1003 { | |
| 1004 if (offend && isMain()) | |
| 1005 { // Add a return 0; statement | |
| 1006 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
| 1007 fbody = new CompoundStatement(0, fbody, s); | |
| 1008 } | |
| 1009 } | |
| 1010 else | |
| 1011 { | |
| 1012 if (offend) | |
| 1013 { Expression *e; | |
| 1014 | |
| 1015 if (global.params.warnings) | |
| 1016 { fprintf(stdmsg, "warning - "); | |
| 1017 error("no return at end of function"); | |
| 1018 } | |
| 1019 | |
| 1020 if (global.params.useAssert && | |
| 1021 !global.params.useInline) | |
| 1022 { /* Add an assert(0, msg); where the missing return | |
| 1023 * should be. | |
| 1024 */ | |
| 1025 e = new AssertExp( | |
| 1026 endloc, | |
| 1027 new IntegerExp(0), | |
| 1028 new StringExp(loc, "missing return expression") | |
| 1029 ); | |
| 1030 } | |
| 1031 else | |
| 1032 e = new HaltExp(endloc); | |
| 1033 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
| 1034 e = e->semantic(sc2); | |
| 1035 Statement *s = new ExpStatement(0, e); | |
| 1036 fbody = new CompoundStatement(0, fbody, s); | |
| 1037 } | |
| 1038 } | |
| 1039 } | |
| 1040 } | |
| 1041 | |
| 1042 { | |
| 1043 Statements *a = new Statements(); | |
| 1044 | |
| 1045 // Merge in initialization of 'out' parameters | |
| 1046 if (parameters) | |
| 1047 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1048 { VarDeclaration *v; | |
| 1049 | |
| 1050 v = (VarDeclaration *)parameters->data[i]; | |
| 1051 if (v->storage_class & STCout) | |
| 1052 { | |
| 1053 assert(v->init); | |
| 1054 ExpInitializer *ie = v->init->isExpInitializer(); | |
| 1055 assert(ie); | |
| 1056 a->push(new ExpStatement(0, ie->exp)); | |
| 1057 } | |
| 1058 } | |
| 1059 } | |
| 1060 | |
|
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1061 // we'll handle variadics ourselves |
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1062 #if !IN_LLVM |
| 1 | 1063 if (argptr) |
| 1064 { // Initialize _argptr to point past non-variadic arg | |
| 1065 #if IN_GCC | |
| 1066 // Handled in FuncDeclaration::toObjFile | |
| 1067 v_argptr = argptr; | |
| 1068 v_argptr->init = new VoidInitializer(loc); | |
| 1069 #else | |
| 1070 Expression *e1; | |
| 1071 Expression *e; | |
| 1072 Type *t = argptr->type; | |
| 1073 VarDeclaration *p; | |
| 1074 unsigned offset; | |
| 1075 | |
| 1076 e1 = new VarExp(0, argptr); | |
| 1077 if (parameters && parameters->dim) | |
| 1078 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
| 1079 else | |
| 1080 p = v_arguments; // last parameter is _arguments[] | |
| 1081 offset = p->type->size(); | |
| 1082 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1083 e = new SymOffExp(0, p, offset); | |
| 1084 e = new AssignExp(0, e1, e); | |
| 1085 e->type = t; | |
| 1086 a->push(new ExpStatement(0, e)); | |
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1087 #endif // IN_GCC |
| 1 | 1088 } |
| 1089 | |
| 1090 if (_arguments) | |
| 1091 { | |
| 1092 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1093 * _arguments = v_arguments.elements; | |
| 1094 */ | |
| 1095 Expression *e = new VarExp(0, v_arguments); | |
| 1096 e = new DotIdExp(0, e, Id::elements); | |
| 1097 Expression *e1 = new VarExp(0, _arguments); | |
| 1098 e = new AssignExp(0, e1, e); | |
| 1099 e = e->semantic(sc); | |
| 1100 a->push(new ExpStatement(0, e)); | |
| 1101 } | |
| 1102 | |
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1103 #endif // !IN_LLVM |
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1104 |
| 1 | 1105 // Merge contracts together with body into one compound statement |
| 1106 | |
| 1107 #ifdef _DH | |
| 1108 if (frequire && global.params.useIn) | |
| 1109 { frequire->incontract = 1; | |
| 1110 a->push(frequire); | |
| 1111 } | |
| 1112 #else | |
| 1113 if (frequire && global.params.useIn) | |
| 1114 a->push(frequire); | |
| 1115 #endif | |
| 1116 | |
| 1117 // Precondition invariant | |
| 1118 if (addPreInvariant()) | |
| 1119 { | |
| 1120 Expression *e = NULL; | |
| 1121 if (isDtorDeclaration()) | |
| 1122 { | |
| 1123 // Call invariant directly only if it exists | |
| 1124 InvariantDeclaration *inv = ad->inv; | |
| 1125 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1126 | |
| 1127 while (!inv && cd) | |
| 1128 { | |
| 1129 cd = cd->baseClass; | |
| 1130 if (!cd) | |
| 1131 break; | |
| 1132 inv = cd->inv; | |
| 1133 } | |
| 1134 if (inv) | |
| 1135 { | |
| 1136 e = new DsymbolExp(0, inv); | |
| 1137 e = new CallExp(0, e); | |
| 1138 e = e->semantic(sc2); | |
| 1139 } | |
| 1140 } | |
| 1141 else | |
| 1142 { // Call invariant virtually | |
| 1143 ThisExp *v = new ThisExp(0); | |
| 1144 v->type = vthis->type; | |
| 1145 Expression *se = new StringExp(0, "null this"); | |
| 1146 se = se->semantic(sc); | |
| 1147 se->type = Type::tchar->arrayOf(); | |
| 1148 e = new AssertExp(loc, v, se); | |
| 1149 } | |
| 1150 if (e) | |
| 1151 { | |
| 1152 ExpStatement *s = new ExpStatement(0, e); | |
| 1153 a->push(s); | |
| 1154 } | |
| 1155 } | |
| 1156 | |
| 1157 if (fbody) | |
| 1158 a->push(fbody); | |
| 1159 | |
| 1160 if (fensure) | |
| 1161 { | |
| 1162 a->push(returnLabel->statement); | |
| 1163 | |
| 1164 if (type->nextOf()->ty != Tvoid) | |
| 1165 { | |
| 1166 // Create: return vresult; | |
| 1167 assert(vresult); | |
| 1168 Expression *e = new VarExp(0, vresult); | |
| 1169 if (tintro) | |
| 1170 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
| 1171 e = e->semantic(sc); | |
| 1172 } | |
| 1173 ReturnStatement *s = new ReturnStatement(0, e); | |
| 1174 a->push(s); | |
| 1175 } | |
| 1176 } | |
| 1177 | |
| 1178 fbody = new CompoundStatement(0, a); | |
| 1179 } | |
| 1180 | |
| 1181 sc2->callSuper = 0; | |
| 1182 sc2->pop(); | |
| 1183 } | |
| 1184 semanticRun = 2; | |
| 1185 } | |
| 1186 | |
| 1187 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1188 { | |
| 1189 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
| 1190 | |
| 1191 type->toCBuffer(buf, ident, hgs); | |
| 1192 bodyToCBuffer(buf, hgs); | |
| 1193 } | |
| 1194 | |
| 1195 | |
| 1196 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1197 { | |
| 1198 if (fbody && | |
| 1199 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
| 1200 ) | |
| 1201 { buf->writenl(); | |
| 1202 | |
| 1203 // in{} | |
| 1204 if (frequire) | |
| 1205 { buf->writestring("in"); | |
| 1206 buf->writenl(); | |
| 1207 frequire->toCBuffer(buf, hgs); | |
| 1208 } | |
| 1209 | |
| 1210 // out{} | |
| 1211 if (fensure) | |
| 1212 { buf->writestring("out"); | |
| 1213 if (outId) | |
| 1214 { buf->writebyte('('); | |
| 1215 buf->writestring(outId->toChars()); | |
| 1216 buf->writebyte(')'); | |
| 1217 } | |
| 1218 buf->writenl(); | |
| 1219 fensure->toCBuffer(buf, hgs); | |
| 1220 } | |
| 1221 | |
| 1222 if (frequire || fensure) | |
| 1223 { buf->writestring("body"); | |
| 1224 buf->writenl(); | |
| 1225 } | |
| 1226 | |
| 1227 buf->writebyte('{'); | |
| 1228 buf->writenl(); | |
| 1229 fbody->toCBuffer(buf, hgs); | |
| 1230 buf->writebyte('}'); | |
| 1231 buf->writenl(); | |
| 1232 } | |
| 1233 else | |
| 1234 { buf->writeByte(';'); | |
| 1235 buf->writenl(); | |
| 1236 } | |
| 1237 } | |
| 1238 | |
| 1239 /**************************************************** | |
| 1240 * Determine if 'this' overrides fd. | |
| 1241 * Return !=0 if it does. | |
| 1242 */ | |
| 1243 | |
| 1244 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
| 1245 { int result = 0; | |
| 1246 | |
| 1247 if (fd->ident == ident) | |
| 1248 { | |
| 1249 int cov = type->covariant(fd->type); | |
| 1250 if (cov) | |
| 1251 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
| 1252 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
| 1253 | |
| 1254 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
| 1255 result = 1; | |
| 1256 } | |
| 1257 } | |
| 1258 return result; | |
| 1259 } | |
| 1260 | |
| 1261 /**************************************************** | |
| 1262 * Overload this FuncDeclaration with the new one f. | |
| 1263 * Return !=0 if successful; i.e. no conflict. | |
| 1264 */ | |
| 1265 | |
| 1266 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
| 1267 { | |
| 1268 FuncDeclaration *f; | |
| 1269 AliasDeclaration *a; | |
| 1270 | |
| 1271 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
| 1272 a = s->isAliasDeclaration(); | |
| 1273 if (a) | |
| 1274 { | |
| 1275 if (overnext) | |
| 1276 return overnext->overloadInsert(a); | |
| 1277 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
| 1278 { | |
| 1279 //printf("\ta = '%s'\n", a->type->toChars()); | |
| 1280 return FALSE; | |
| 1281 } | |
| 1282 overnext = a; | |
| 1283 //printf("\ttrue: no conflict\n"); | |
| 1284 return TRUE; | |
| 1285 } | |
| 1286 f = s->isFuncDeclaration(); | |
| 1287 if (!f) | |
| 1288 return FALSE; | |
| 1289 | |
| 1290 if (type && f->type && // can be NULL for overloaded constructors | |
| 1291 f->type->covariant(type) && | |
| 1292 !isFuncAliasDeclaration()) | |
| 1293 { | |
| 1294 //printf("\tfalse: conflict %s\n", kind()); | |
| 1295 return FALSE; | |
| 1296 } | |
| 1297 | |
| 1298 if (overnext) | |
| 1299 return overnext->overloadInsert(f); | |
| 1300 overnext = f; | |
| 1301 //printf("\ttrue: no conflict\n"); | |
| 1302 return TRUE; | |
| 1303 } | |
| 1304 | |
| 1305 /******************************************** | |
| 1306 * Find function in overload list that exactly matches t. | |
| 1307 */ | |
| 1308 | |
| 1309 /*************************************************** | |
| 1310 * Visit each overloaded function in turn, and call | |
| 1311 * (*fp)(param, f) on it. | |
| 1312 * Exit when no more, or (*fp)(param, f) returns 1. | |
| 1313 * Returns: | |
| 1314 * 0 continue | |
| 1315 * 1 done | |
| 1316 */ | |
| 1317 | |
| 1318 int overloadApply(FuncDeclaration *fstart, | |
| 1319 int (*fp)(void *, FuncDeclaration *), | |
| 1320 void *param) | |
| 1321 { | |
| 1322 FuncDeclaration *f; | |
| 1323 Declaration *d; | |
| 1324 Declaration *next; | |
| 1325 | |
| 1326 for (d = fstart; d; d = next) | |
| 1327 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1328 | |
| 1329 if (fa) | |
| 1330 { | |
| 1331 if (overloadApply(fa->funcalias, fp, param)) | |
| 1332 return 1; | |
| 1333 next = fa->overnext; | |
| 1334 } | |
| 1335 else | |
| 1336 { | |
| 1337 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1338 | |
| 1339 if (a) | |
| 1340 { | |
| 1341 Dsymbol *s = a->toAlias(); | |
| 1342 next = s->isDeclaration(); | |
| 1343 if (next == a) | |
| 1344 break; | |
| 1345 if (next == fstart) | |
| 1346 break; | |
| 1347 } | |
| 1348 else | |
| 1349 { | |
| 1350 f = d->isFuncDeclaration(); | |
| 1351 if (!f) | |
| 1352 { d->error("is aliased to a function"); | |
| 1353 break; // BUG: should print error message? | |
| 1354 } | |
| 1355 if ((*fp)(param, f)) | |
| 1356 return 1; | |
| 1357 | |
| 1358 next = f->overnext; | |
| 1359 } | |
| 1360 } | |
| 1361 } | |
| 1362 return 0; | |
| 1363 } | |
| 1364 | |
| 1365 /******************************************** | |
| 1366 * Find function in overload list that exactly matches t. | |
| 1367 */ | |
| 1368 | |
| 1369 struct Param1 | |
| 1370 { | |
| 1371 Type *t; // type to match | |
| 1372 FuncDeclaration *f; // return value | |
| 1373 }; | |
| 1374 | |
| 1375 int fp1(void *param, FuncDeclaration *f) | |
| 1376 { Param1 *p = (Param1 *)param; | |
| 1377 Type *t = p->t; | |
| 1378 | |
| 1379 if (t->equals(f->type)) | |
| 1380 { p->f = f; | |
| 1381 return 1; | |
| 1382 } | |
| 1383 | |
| 1384 #if V2 | |
| 1385 /* Allow covariant matches, if it's just a const conversion | |
| 1386 * of the return type | |
| 1387 */ | |
| 1388 if (t->ty == Tfunction) | |
| 1389 { TypeFunction *tf = (TypeFunction *)f->type; | |
| 1390 if (tf->covariant(t) == 1 && | |
| 1391 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
| 1392 { | |
| 1393 p->f = f; | |
| 1394 return 1; | |
| 1395 } | |
| 1396 } | |
| 1397 #endif | |
| 1398 return 0; | |
| 1399 } | |
| 1400 | |
| 1401 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1402 { | |
| 1403 Param1 p; | |
| 1404 p.t = t; | |
| 1405 p.f = NULL; | |
| 1406 overloadApply(this, &fp1, &p); | |
| 1407 return p.f; | |
| 1408 } | |
| 1409 | |
| 1410 #if 0 | |
| 1411 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1412 { | |
| 1413 FuncDeclaration *f; | |
| 1414 Declaration *d; | |
| 1415 Declaration *next; | |
| 1416 | |
| 1417 for (d = this; d; d = next) | |
| 1418 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1419 | |
| 1420 if (fa) | |
| 1421 { | |
| 1422 FuncDeclaration *f2 = fa->funcalias->overloadExactMatch(t); | |
| 1423 if (f2) | |
| 1424 return f2; | |
| 1425 next = fa->overnext; | |
| 1426 } | |
| 1427 else | |
| 1428 { | |
| 1429 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1430 | |
| 1431 if (a) | |
| 1432 { | |
| 1433 Dsymbol *s = a->toAlias(); | |
| 1434 next = s->isDeclaration(); | |
| 1435 if (next == a) | |
| 1436 break; | |
| 1437 } | |
| 1438 else | |
| 1439 { | |
| 1440 f = d->isFuncDeclaration(); | |
| 1441 if (!f) | |
| 1442 break; // BUG: should print error message? | |
| 1443 if (t->equals(d->type)) | |
| 1444 return f; | |
| 1445 next = f->overnext; | |
| 1446 } | |
| 1447 } | |
| 1448 } | |
| 1449 return NULL; | |
| 1450 } | |
| 1451 #endif | |
| 1452 | |
| 1453 /******************************************** | |
| 1454 * Decide which function matches the arguments best. | |
| 1455 */ | |
| 1456 | |
| 1457 struct Param2 | |
| 1458 { | |
| 1459 Match *m; | |
| 1460 Expressions *arguments; | |
| 1461 }; | |
| 1462 | |
| 1463 int fp2(void *param, FuncDeclaration *f) | |
| 1464 { Param2 *p = (Param2 *)param; | |
| 1465 Match *m = p->m; | |
| 1466 Expressions *arguments = p->arguments; | |
| 1467 MATCH match; | |
| 1468 | |
| 1469 if (f != m->lastf) // skip duplicates | |
| 1470 { | |
| 1471 TypeFunction *tf; | |
| 1472 | |
| 1473 m->anyf = f; | |
| 1474 tf = (TypeFunction *)f->type; | |
| 1475 match = (MATCH) tf->callMatch(arguments); | |
| 1476 //printf("match = %d\n", match); | |
| 1477 if (match != MATCHnomatch) | |
| 1478 { | |
| 1479 if (match > m->last) | |
| 1480 goto LfIsBetter; | |
| 1481 | |
| 1482 if (match < m->last) | |
| 1483 goto LlastIsBetter; | |
| 1484 | |
| 1485 /* See if one of the matches overrides the other. | |
| 1486 */ | |
| 1487 if (m->lastf->overrides(f)) | |
| 1488 goto LlastIsBetter; | |
| 1489 else if (f->overrides(m->lastf)) | |
| 1490 goto LfIsBetter; | |
| 1491 | |
| 1492 Lambiguous: | |
| 1493 m->nextf = f; | |
| 1494 m->count++; | |
| 1495 return 0; | |
| 1496 | |
| 1497 LfIsBetter: | |
| 1498 m->last = match; | |
| 1499 m->lastf = f; | |
| 1500 m->count = 1; | |
| 1501 return 0; | |
| 1502 | |
| 1503 LlastIsBetter: | |
| 1504 return 0; | |
| 1505 } | |
| 1506 } | |
| 1507 return 0; | |
| 1508 } | |
| 1509 | |
| 1510 | |
| 1511 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1512 { | |
| 1513 Param2 p; | |
| 1514 p.m = m; | |
| 1515 p.arguments = arguments; | |
| 1516 overloadApply(fstart, &fp2, &p); | |
| 1517 } | |
| 1518 | |
| 1519 #if 0 | |
| 1520 // Recursive helper function | |
| 1521 | |
| 1522 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1523 { | |
| 1524 MATCH match; | |
| 1525 Declaration *d; | |
| 1526 Declaration *next; | |
| 1527 | |
| 1528 for (d = fstart; d; d = next) | |
| 1529 { | |
| 1530 FuncDeclaration *f; | |
| 1531 FuncAliasDeclaration *fa; | |
| 1532 AliasDeclaration *a; | |
| 1533 | |
| 1534 fa = d->isFuncAliasDeclaration(); | |
| 1535 if (fa) | |
| 1536 { | |
| 1537 overloadResolveX(m, fa->funcalias, arguments); | |
| 1538 next = fa->overnext; | |
| 1539 } | |
| 1540 else if ((f = d->isFuncDeclaration()) != NULL) | |
| 1541 { | |
| 1542 next = f->overnext; | |
| 1543 if (f == m->lastf) | |
| 1544 continue; // skip duplicates | |
| 1545 else | |
| 1546 { | |
| 1547 TypeFunction *tf; | |
| 1548 | |
| 1549 m->anyf = f; | |
| 1550 tf = (TypeFunction *)f->type; | |
| 1551 match = (MATCH) tf->callMatch(arguments); | |
| 1552 //printf("match = %d\n", match); | |
| 1553 if (match != MATCHnomatch) | |
| 1554 { | |
| 1555 if (match > m->last) | |
| 1556 goto LfIsBetter; | |
| 1557 | |
| 1558 if (match < m->last) | |
| 1559 goto LlastIsBetter; | |
| 1560 | |
| 1561 /* See if one of the matches overrides the other. | |
| 1562 */ | |
| 1563 if (m->lastf->overrides(f)) | |
| 1564 goto LlastIsBetter; | |
| 1565 else if (f->overrides(m->lastf)) | |
| 1566 goto LfIsBetter; | |
| 1567 | |
| 1568 Lambiguous: | |
| 1569 m->nextf = f; | |
| 1570 m->count++; | |
| 1571 continue; | |
| 1572 | |
| 1573 LfIsBetter: | |
| 1574 m->last = match; | |
| 1575 m->lastf = f; | |
| 1576 m->count = 1; | |
| 1577 continue; | |
| 1578 | |
| 1579 LlastIsBetter: | |
| 1580 continue; | |
| 1581 } | |
| 1582 } | |
| 1583 } | |
| 1584 else if ((a = d->isAliasDeclaration()) != NULL) | |
| 1585 { | |
| 1586 Dsymbol *s = a->toAlias(); | |
| 1587 next = s->isDeclaration(); | |
| 1588 if (next == a) | |
| 1589 break; | |
| 1590 if (next == fstart) | |
| 1591 break; | |
| 1592 } | |
| 1593 else | |
| 1594 { d->error("is aliased to a function"); | |
| 1595 break; | |
| 1596 } | |
| 1597 } | |
| 1598 } | |
| 1599 #endif | |
| 1600 | |
| 1601 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expressions *arguments) | |
| 1602 { | |
| 1603 TypeFunction *tf; | |
| 1604 Match m; | |
| 1605 | |
| 1606 #if 0 | |
| 1607 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
| 1608 if (arguments) | |
| 1609 { int i; | |
| 1610 | |
| 1611 for (i = 0; i < arguments->dim; i++) | |
| 1612 { Expression *arg; | |
| 1613 | |
| 1614 arg = (Expression *)arguments->data[i]; | |
| 1615 assert(arg->type); | |
| 1616 printf("\t%s: ", arg->toChars()); | |
| 1617 arg->type->print(); | |
| 1618 } | |
| 1619 } | |
| 1620 #endif | |
| 1621 | |
| 1622 memset(&m, 0, sizeof(m)); | |
| 1623 m.last = MATCHnomatch; | |
| 1624 overloadResolveX(&m, this, arguments); | |
| 1625 | |
| 1626 if (m.count == 1) // exactly one match | |
| 1627 { | |
| 1628 return m.lastf; | |
| 1629 } | |
| 1630 else | |
| 1631 { | |
| 1632 OutBuffer buf; | |
| 1633 | |
| 1634 if (arguments) | |
| 1635 { | |
| 1636 HdrGenState hgs; | |
| 1637 | |
| 1638 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
| 1639 } | |
| 1640 | |
| 1641 if (m.last == MATCHnomatch) | |
| 1642 { | |
| 1643 tf = (TypeFunction *)type; | |
| 1644 | |
| 1645 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
| 1646 error(loc, "%s does not match parameter types (%s)", | |
| 1647 Argument::argsTypesToChars(tf->parameters, tf->varargs), | |
| 1648 buf.toChars()); | |
| 1649 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1650 } | |
| 1651 else | |
| 1652 { | |
| 1653 #if 1 | |
| 1654 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
| 1655 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
| 1656 | |
| 1657 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1658 buf.toChars(), | |
| 1659 m.lastf->toPrettyChars(), Argument::argsTypesToChars(t1->parameters, t1->varargs), | |
| 1660 m.nextf->toPrettyChars(), Argument::argsTypesToChars(t2->parameters, t2->varargs)); | |
| 1661 #else | |
| 1662 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1663 m.lastf->type->toChars(), | |
| 1664 m.nextf->type->toChars(), | |
| 1665 m.lastf->toChars()); | |
| 1666 #endif | |
| 1667 return m.lastf; | |
| 1668 } | |
| 1669 } | |
| 1670 } | |
| 1671 | |
| 1672 /******************************** | |
| 1673 * Labels are in a separate scope, one per function. | |
| 1674 */ | |
| 1675 | |
| 1676 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
| 1677 { Dsymbol *s; | |
| 1678 | |
| 1679 if (!labtab) | |
| 1680 labtab = new DsymbolTable(); // guess we need one | |
| 1681 | |
| 1682 s = labtab->lookup(ident); | |
| 1683 if (!s) | |
| 1684 { | |
| 1685 s = new LabelDsymbol(ident); | |
| 1686 labtab->insert(s); | |
| 1687 } | |
| 1688 return (LabelDsymbol *)s; | |
| 1689 } | |
| 1690 | |
| 1691 AggregateDeclaration *FuncDeclaration::isThis() | |
| 1692 { AggregateDeclaration *ad; | |
| 1693 | |
| 1694 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
| 1695 ad = NULL; | |
| 1696 if ((storage_class & STCstatic) == 0) | |
| 1697 { | |
| 1698 ad = isMember2(); | |
| 1699 } | |
| 1700 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
| 1701 return ad; | |
| 1702 } | |
| 1703 | |
| 1704 AggregateDeclaration *FuncDeclaration::isMember2() | |
| 1705 { AggregateDeclaration *ad; | |
| 1706 | |
| 1707 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
| 1708 ad = NULL; | |
| 1709 for (Dsymbol *s = this; s; s = s->parent) | |
| 1710 { | |
| 1711 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
| 1712 ad = s->isMember(); | |
| 1713 if (ad) | |
| 1714 { //printf("test4\n"); | |
| 1715 break; | |
| 1716 } | |
| 1717 if (!s->parent || | |
| 1718 (!s->parent->isTemplateInstance())) | |
| 1719 { //printf("test5\n"); | |
| 1720 break; | |
| 1721 } | |
| 1722 } | |
| 1723 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
| 1724 return ad; | |
| 1725 } | |
| 1726 | |
| 1727 /***************************************** | |
| 1728 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 1729 * Error if this cannot call fd. | |
| 1730 * Returns: | |
| 1731 * 0 same level | |
| 1732 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 1733 * >0 decrease nesting by number | |
| 1734 */ | |
| 1735 | |
| 1736 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
| 1737 { int level; | |
| 1738 Dsymbol *s; | |
| 1739 Dsymbol *fdparent; | |
| 1740 | |
| 1741 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
| 1742 fdparent = fd->toParent2(); | |
| 1743 if (fdparent == this) | |
| 1744 return -1; | |
| 1745 s = this; | |
| 1746 level = 0; | |
| 1747 while (fd != s && fdparent != s->toParent2()) | |
| 1748 { | |
| 1749 //printf("\ts = '%s'\n", s->toChars()); | |
| 1750 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
| 1751 if (thisfd) | |
| 1752 { if (!thisfd->isNested() && !thisfd->vthis) | |
| 1753 goto Lerr; | |
| 1754 } | |
| 1755 else | |
| 1756 { | |
| 1757 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
| 1758 if (thiscd) | |
| 1759 { if (!thiscd->isNested()) | |
| 1760 goto Lerr; | |
| 1761 } | |
| 1762 else | |
| 1763 goto Lerr; | |
| 1764 } | |
| 1765 | |
| 1766 s = s->toParent2(); | |
| 1767 assert(s); | |
| 1768 level++; | |
| 1769 } | |
| 1770 return level; | |
| 1771 | |
| 1772 Lerr: | |
| 1773 error(loc, "cannot access frame of function %s", fd->toChars()); | |
| 1774 return 1; | |
| 1775 } | |
| 1776 | |
| 1777 void FuncDeclaration::appendExp(Expression *e) | |
| 1778 { Statement *s; | |
| 1779 | |
| 1780 s = new ExpStatement(0, e); | |
| 1781 appendState(s); | |
| 1782 } | |
| 1783 | |
| 1784 void FuncDeclaration::appendState(Statement *s) | |
| 1785 { CompoundStatement *cs; | |
| 1786 | |
| 1787 if (!fbody) | |
| 1788 { Statements *a; | |
| 1789 | |
| 1790 a = new Statements(); | |
| 1791 fbody = new CompoundStatement(0, a); | |
| 1792 } | |
| 1793 cs = fbody->isCompoundStatement(); | |
| 1794 cs->statements->push(s); | |
| 1795 } | |
| 1796 | |
| 1797 | |
| 1798 int FuncDeclaration::isMain() | |
| 1799 { | |
| 1800 return ident == Id::main && | |
| 1801 linkage != LINKc && !isMember() && !isNested(); | |
| 1802 } | |
| 1803 | |
| 1804 int FuncDeclaration::isWinMain() | |
| 1805 { | |
| 1806 return ident == Id::WinMain && | |
| 1807 linkage != LINKc && !isMember(); | |
| 1808 } | |
| 1809 | |
| 1810 int FuncDeclaration::isDllMain() | |
| 1811 { | |
| 1812 return ident == Id::DllMain && | |
| 1813 linkage != LINKc && !isMember(); | |
| 1814 } | |
| 1815 | |
| 1816 int FuncDeclaration::isExport() | |
| 1817 { | |
| 1818 return protection == PROTexport; | |
| 1819 } | |
| 1820 | |
| 1821 int FuncDeclaration::isImportedSymbol() | |
| 1822 { | |
| 1823 //printf("isImportedSymbol()\n"); | |
| 1824 //printf("protection = %d\n", protection); | |
| 1825 return (protection == PROTexport) && !fbody; | |
| 1826 } | |
| 1827 | |
| 1828 // Determine if function goes into virtual function pointer table | |
| 1829 | |
| 1830 int FuncDeclaration::isVirtual() | |
| 1831 { | |
| 1832 #if 0 | |
| 1833 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
| 1834 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
| 1835 printf("result is %d\n", | |
| 1836 isMember() && | |
| 1837 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1838 toParent()->isClassDeclaration()); | |
| 1839 #endif | |
| 1840 return isMember() && | |
| 1841 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1842 toParent()->isClassDeclaration(); | |
| 1843 } | |
| 1844 | |
| 1845 int FuncDeclaration::isAbstract() | |
| 1846 { | |
| 1847 return storage_class & STCabstract; | |
| 1848 } | |
| 1849 | |
| 1850 int FuncDeclaration::isCodeseg() | |
| 1851 { | |
| 1852 return TRUE; // functions are always in the code segment | |
| 1853 } | |
| 1854 | |
| 1855 // Determine if function needs | |
| 1856 // a static frame pointer to its lexically enclosing function | |
| 1857 | |
| 1858 int FuncDeclaration::isNested() | |
| 1859 { | |
| 1860 //if (!toParent()) | |
| 1861 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
| 1862 //printf("\ttoParent() = '%s'\n", toParent()->toChars()); | |
| 1863 return ((storage_class & STCstatic) == 0) && | |
| 1864 (toParent2()->isFuncDeclaration() != NULL); | |
| 1865 } | |
| 1866 | |
| 1867 int FuncDeclaration::needThis() | |
| 1868 { | |
| 1869 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
| 1870 int i = isThis() != NULL; | |
| 1871 //printf("\t%d\n", i); | |
| 1872 if (!i && isFuncAliasDeclaration()) | |
| 1873 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
| 1874 return i; | |
| 1875 } | |
| 1876 | |
| 1877 int FuncDeclaration::addPreInvariant() | |
| 1878 { | |
| 1879 AggregateDeclaration *ad = isThis(); | |
| 1880 return (ad && | |
| 1881 //ad->isClassDeclaration() && | |
| 1882 global.params.useInvariants && | |
| 1883 (protection == PROTpublic || protection == PROTexport) && | |
| 1884 !naked); | |
| 1885 } | |
| 1886 | |
| 1887 int FuncDeclaration::addPostInvariant() | |
| 1888 { | |
| 1889 AggregateDeclaration *ad = isThis(); | |
| 1890 return (ad && | |
| 1891 ad->inv && | |
| 1892 //ad->isClassDeclaration() && | |
| 1893 global.params.useInvariants && | |
| 1894 (protection == PROTpublic || protection == PROTexport) && | |
| 1895 !naked); | |
| 1896 } | |
| 1897 | |
| 1898 /********************************** | |
| 1899 * Generate a FuncDeclaration for a runtime library function. | |
| 1900 */ | |
| 1901 | |
| 1902 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, char *name) | |
| 1903 { | |
| 1904 return genCfunc(treturn, Lexer::idPool(name)); | |
| 1905 } | |
| 1906 | |
| 1907 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, Identifier *id) | |
| 1908 { | |
| 1909 FuncDeclaration *fd; | |
| 1910 TypeFunction *tf; | |
| 1911 Dsymbol *s; | |
| 1912 static DsymbolTable *st = NULL; | |
| 1913 | |
| 1914 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
| 1915 //printf("treturn\n\t"); treturn->print(); | |
| 1916 | |
| 1917 // See if already in table | |
| 1918 if (!st) | |
| 1919 st = new DsymbolTable(); | |
| 1920 s = st->lookup(id); | |
| 1921 if (s) | |
| 1922 { | |
| 1923 fd = s->isFuncDeclaration(); | |
| 1924 assert(fd); | |
| 1925 assert(fd->type->nextOf()->equals(treturn)); | |
| 1926 } | |
| 1927 else | |
| 1928 { | |
| 1929 tf = new TypeFunction(NULL, treturn, 0, LINKc); | |
| 1930 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); | |
| 1931 fd->protection = PROTpublic; | |
| 1932 fd->linkage = LINKc; | |
| 1933 | |
| 1934 st->insert(fd); | |
| 1935 } | |
| 1936 return fd; | |
| 1937 } | |
| 1938 | |
| 1939 char *FuncDeclaration::kind() | |
| 1940 { | |
| 1941 return "function"; | |
| 1942 } | |
| 1943 | |
| 1944 /****************************** FuncAliasDeclaration ************************/ | |
| 1945 | |
| 1946 // Used as a way to import a set of functions from another scope into this one. | |
| 1947 | |
| 1948 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
| 1949 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
| 1950 (enum STC)funcalias->storage_class, funcalias->type) | |
| 1951 { | |
| 1952 assert(funcalias != this); | |
| 1953 this->funcalias = funcalias; | |
| 1954 } | |
| 1955 | |
| 1956 char *FuncAliasDeclaration::kind() | |
| 1957 { | |
| 1958 return "function alias"; | |
| 1959 } | |
| 1960 | |
| 1961 | |
| 1962 /****************************** FuncLiteralDeclaration ************************/ | |
| 1963 | |
| 1964 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
| 1965 enum TOK tok, ForeachStatement *fes) | |
| 1966 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
| 1967 { | |
| 1968 char *id; | |
| 1969 | |
| 1970 if (fes) | |
| 1971 id = "__foreachbody"; | |
| 1972 else if (tok == TOKdelegate) | |
| 1973 id = "__dgliteral"; | |
| 1974 else | |
| 1975 id = "__funcliteral"; | |
| 1976 this->ident = Identifier::generateId(id); | |
| 1977 this->tok = tok; | |
| 1978 this->fes = fes; | |
| 1979 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
| 1980 } | |
| 1981 | |
| 1982 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
| 1983 { | |
| 1984 FuncLiteralDeclaration *f; | |
| 1985 | |
| 1986 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 1987 if (s) | |
| 1988 f = (FuncLiteralDeclaration *)s; | |
| 1989 else | |
| 1990 f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); | |
| 1991 FuncDeclaration::syntaxCopy(f); | |
| 1992 return f; | |
| 1993 } | |
| 1994 | |
| 1995 int FuncLiteralDeclaration::isNested() | |
| 1996 { | |
| 1997 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
| 1998 return (tok == TOKdelegate); | |
| 1999 } | |
| 2000 | |
| 2001 char *FuncLiteralDeclaration::kind() | |
| 2002 { | |
| 2003 // GCC requires the (char*) casts | |
| 2004 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
| 2005 } | |
| 2006 | |
| 2007 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2008 { | |
| 2009 static Identifier *idfunc; | |
| 2010 static Identifier *iddel; | |
| 2011 | |
| 2012 if (!idfunc) | |
| 2013 idfunc = new Identifier("function", 0); | |
| 2014 if (!iddel) | |
| 2015 iddel = new Identifier("delegate", 0); | |
| 2016 | |
| 2017 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
| 2018 bodyToCBuffer(buf, hgs); | |
| 2019 } | |
| 2020 | |
| 2021 | |
| 2022 /********************************* CtorDeclaration ****************************/ | |
| 2023 | |
| 2024 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2025 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) | |
| 2026 { | |
| 2027 this->arguments = arguments; | |
| 2028 this->varargs = varargs; | |
| 2029 //printf("CtorDeclaration() %s\n", toChars()); | |
| 2030 } | |
| 2031 | |
| 2032 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2033 { | |
| 2034 CtorDeclaration *f; | |
| 2035 | |
| 2036 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
| 2037 | |
| 2038 f->outId = outId; | |
| 2039 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 2040 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 2041 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 2042 assert(!fthrows); // deprecated | |
| 2043 | |
| 2044 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2045 return f; | |
| 2046 } | |
| 2047 | |
| 2048 | |
| 2049 void CtorDeclaration::semantic(Scope *sc) | |
| 2050 { | |
| 2051 ClassDeclaration *cd; | |
| 2052 Type *tret; | |
| 2053 | |
| 2054 //printf("CtorDeclaration::semantic()\n"); | |
| 2055 | |
| 2056 sc = sc->push(); | |
| 2057 sc->stc &= ~STCstatic; // not a static constructor | |
| 2058 | |
| 2059 parent = sc->parent; | |
| 2060 Dsymbol *parent = toParent(); | |
| 2061 cd = parent->isClassDeclaration(); | |
| 2062 if (!cd) | |
| 2063 { | |
| 2064 error("constructors only are for class definitions"); | |
| 2065 tret = Type::tvoid; | |
| 2066 } | |
| 2067 else | |
| 2068 tret = cd->type; //->referenceTo(); | |
| 2069 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2070 | |
| 2071 sc->flags |= SCOPEctor; | |
| 2072 type = type->semantic(loc, sc); | |
| 2073 sc->flags &= ~SCOPEctor; | |
| 2074 | |
| 2075 // Append: | |
| 2076 // return this; | |
| 2077 // to the function body | |
| 2078 if (fbody) | |
| 2079 { Expression *e; | |
| 2080 Statement *s; | |
| 2081 | |
| 2082 e = new ThisExp(0); | |
| 2083 s = new ReturnStatement(0, e); | |
| 2084 fbody = new CompoundStatement(0, fbody, s); | |
| 2085 } | |
| 2086 | |
| 2087 FuncDeclaration::semantic(sc); | |
| 2088 | |
| 2089 sc->pop(); | |
| 2090 | |
| 2091 // See if it's the default constructor | |
| 2092 if (cd && varargs == 0 && Argument::dim(arguments) == 0) | |
| 2093 cd->defaultCtor = this; | |
| 2094 } | |
| 2095 | |
| 2096 char *CtorDeclaration::kind() | |
| 2097 { | |
| 2098 return "constructor"; | |
| 2099 } | |
| 2100 | |
| 2101 char *CtorDeclaration::toChars() | |
| 2102 { | |
| 2103 return "this"; | |
| 2104 } | |
| 2105 | |
| 2106 int CtorDeclaration::isVirtual() | |
| 2107 { | |
| 2108 return FALSE; | |
| 2109 } | |
| 2110 | |
| 2111 int CtorDeclaration::addPreInvariant() | |
| 2112 { | |
| 2113 return FALSE; | |
| 2114 } | |
| 2115 | |
| 2116 int CtorDeclaration::addPostInvariant() | |
| 2117 { | |
| 2118 return (vthis && global.params.useInvariants); | |
| 2119 } | |
| 2120 | |
| 2121 | |
| 2122 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2123 { | |
| 2124 buf->writestring("this"); | |
| 2125 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2126 bodyToCBuffer(buf, hgs); | |
| 2127 } | |
| 2128 | |
| 2129 /********************************* DtorDeclaration ****************************/ | |
| 2130 | |
| 2131 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
| 2132 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
| 2133 { | |
| 2134 } | |
| 2135 | |
| 2136 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2137 { | |
| 2138 DtorDeclaration *dd; | |
| 2139 | |
| 2140 assert(!s); | |
| 2141 dd = new DtorDeclaration(loc, endloc); | |
| 2142 return FuncDeclaration::syntaxCopy(dd); | |
| 2143 } | |
| 2144 | |
| 2145 | |
| 2146 void DtorDeclaration::semantic(Scope *sc) | |
| 2147 { | |
| 2148 ClassDeclaration *cd; | |
| 2149 | |
| 2150 parent = sc->parent; | |
| 2151 Dsymbol *parent = toParent(); | |
| 2152 cd = parent->isClassDeclaration(); | |
| 2153 if (!cd) | |
| 2154 { | |
| 2155 error("destructors only are for class definitions"); | |
| 2156 } | |
| 2157 else | |
| 2158 cd->dtors.push(this); | |
| 2159 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2160 | |
| 2161 sc = sc->push(); | |
| 2162 sc->stc &= ~STCstatic; // not a static destructor | |
| 2163 sc->linkage = LINKd; | |
| 2164 | |
| 2165 FuncDeclaration::semantic(sc); | |
| 2166 | |
| 2167 sc->pop(); | |
| 2168 } | |
| 2169 | |
| 2170 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
| 2171 { | |
| 2172 return FALSE; // cannot overload destructors | |
| 2173 } | |
| 2174 | |
| 2175 int DtorDeclaration::addPreInvariant() | |
| 2176 { | |
| 2177 return (vthis && global.params.useInvariants); | |
| 2178 } | |
| 2179 | |
| 2180 int DtorDeclaration::addPostInvariant() | |
| 2181 { | |
| 2182 return FALSE; | |
| 2183 } | |
| 2184 | |
| 2185 int DtorDeclaration::isVirtual() | |
| 2186 { | |
| 2187 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
| 2188 * but doing so will require recompiling everything. | |
| 2189 */ | |
| 2190 #if BREAKABI | |
| 2191 return FALSE; | |
| 2192 #else | |
| 2193 return FuncDeclaration::isVirtual(); | |
| 2194 #endif | |
| 2195 } | |
| 2196 | |
| 2197 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2198 { | |
| 2199 if (hgs->hdrgen) | |
| 2200 return; | |
| 2201 buf->writestring("~this()"); | |
| 2202 bodyToCBuffer(buf, hgs); | |
| 2203 } | |
| 2204 | |
| 2205 /********************************* StaticCtorDeclaration ****************************/ | |
| 2206 | |
| 2207 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
| 19 | 2208 : FuncDeclaration(loc, endloc, |
| 2209 Identifier::generateId("_staticCtor"), STCstatic, NULL) | |
| 1 | 2210 { |
| 2211 } | |
| 2212 | |
| 2213 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2214 { | |
| 2215 StaticCtorDeclaration *scd; | |
| 2216 | |
| 2217 assert(!s); | |
| 2218 scd = new StaticCtorDeclaration(loc, endloc); | |
| 2219 return FuncDeclaration::syntaxCopy(scd); | |
| 2220 } | |
| 2221 | |
| 2222 | |
| 2223 void StaticCtorDeclaration::semantic(Scope *sc) | |
| 2224 { | |
| 2225 //printf("StaticCtorDeclaration::semantic()\n"); | |
| 2226 | |
| 2227 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2228 | |
| 2229 FuncDeclaration::semantic(sc); | |
| 2230 | |
| 2231 // We're going to need ModuleInfo | |
| 2232 Module *m = getModule(); | |
| 2233 if (!m) | |
| 2234 m = sc->module; | |
| 2235 if (m) | |
| 2236 { m->needmoduleinfo = 1; | |
| 2237 #ifdef IN_GCC | |
| 2238 m->strictlyneedmoduleinfo = 1; | |
| 2239 #endif | |
| 2240 } | |
| 2241 } | |
| 2242 | |
| 2243 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
| 2244 { | |
| 2245 return NULL; | |
| 2246 } | |
| 2247 | |
| 2248 int StaticCtorDeclaration::isStaticConstructor() | |
| 2249 { | |
| 2250 return TRUE; | |
| 2251 } | |
| 2252 | |
| 2253 int StaticCtorDeclaration::isVirtual() | |
| 2254 { | |
| 2255 return FALSE; | |
| 2256 } | |
| 2257 | |
| 2258 int StaticCtorDeclaration::addPreInvariant() | |
| 2259 { | |
| 2260 return FALSE; | |
| 2261 } | |
| 2262 | |
| 2263 int StaticCtorDeclaration::addPostInvariant() | |
| 2264 { | |
| 2265 return FALSE; | |
| 2266 } | |
| 2267 | |
| 2268 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2269 { | |
| 2270 if (hgs->hdrgen) | |
|
35
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
2271 { buf->writestring("static this();\n"); |
| 1 | 2272 return; |
| 2273 } | |
| 2274 buf->writestring("static this()"); | |
| 2275 bodyToCBuffer(buf, hgs); | |
| 2276 } | |
| 2277 | |
| 2278 /********************************* StaticDtorDeclaration ****************************/ | |
| 2279 | |
| 2280 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
| 19 | 2281 : FuncDeclaration(loc, endloc, |
| 2282 Identifier::generateId("_staticDtor"), STCstatic, NULL) | |
| 1 | 2283 { |
| 2284 } | |
| 2285 | |
| 2286 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2287 { | |
| 2288 StaticDtorDeclaration *sdd; | |
| 2289 | |
| 2290 assert(!s); | |
| 2291 sdd = new StaticDtorDeclaration(loc, endloc); | |
| 2292 return FuncDeclaration::syntaxCopy(sdd); | |
| 2293 } | |
| 2294 | |
| 2295 | |
| 2296 void StaticDtorDeclaration::semantic(Scope *sc) | |
| 2297 { | |
| 2298 ClassDeclaration *cd; | |
| 2299 Type *tret; | |
| 2300 | |
| 2301 cd = sc->scopesym->isClassDeclaration(); | |
| 2302 if (!cd) | |
| 2303 { | |
| 2304 } | |
| 2305 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2306 | |
| 2307 FuncDeclaration::semantic(sc); | |
| 2308 | |
| 2309 // We're going to need ModuleInfo | |
| 2310 Module *m = getModule(); | |
| 2311 if (!m) | |
| 2312 m = sc->module; | |
| 2313 if (m) | |
| 2314 { m->needmoduleinfo = 1; | |
| 2315 #ifdef IN_GCC | |
| 2316 m->strictlyneedmoduleinfo = 1; | |
| 2317 #endif | |
| 2318 } | |
| 2319 } | |
| 2320 | |
| 2321 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
| 2322 { | |
| 2323 return NULL; | |
| 2324 } | |
| 2325 | |
| 2326 int StaticDtorDeclaration::isStaticDestructor() | |
| 2327 { | |
| 2328 return TRUE; | |
| 2329 } | |
| 2330 | |
| 2331 int StaticDtorDeclaration::isVirtual() | |
| 2332 { | |
| 2333 return FALSE; | |
| 2334 } | |
| 2335 | |
| 2336 int StaticDtorDeclaration::addPreInvariant() | |
| 2337 { | |
| 2338 return FALSE; | |
| 2339 } | |
| 2340 | |
| 2341 int StaticDtorDeclaration::addPostInvariant() | |
| 2342 { | |
| 2343 return FALSE; | |
| 2344 } | |
| 2345 | |
| 2346 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2347 { | |
| 2348 if (hgs->hdrgen) | |
| 2349 return; | |
| 2350 buf->writestring("static ~this()"); | |
| 2351 bodyToCBuffer(buf, hgs); | |
| 2352 } | |
| 2353 | |
| 2354 /********************************* InvariantDeclaration ****************************/ | |
| 2355 | |
| 2356 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
| 2357 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
| 2358 { | |
| 2359 } | |
| 2360 | |
| 2361 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
| 2362 { | |
| 2363 InvariantDeclaration *id; | |
| 2364 | |
| 2365 assert(!s); | |
| 2366 id = new InvariantDeclaration(loc, endloc); | |
| 2367 FuncDeclaration::syntaxCopy(id); | |
| 2368 return id; | |
| 2369 } | |
| 2370 | |
| 2371 | |
| 2372 void InvariantDeclaration::semantic(Scope *sc) | |
| 2373 { | |
| 2374 AggregateDeclaration *ad; | |
| 2375 Type *tret; | |
| 2376 | |
| 2377 parent = sc->parent; | |
| 2378 Dsymbol *parent = toParent(); | |
| 2379 ad = parent->isAggregateDeclaration(); | |
| 2380 if (!ad) | |
| 2381 { | |
| 2382 error("invariants only are for struct/union/class definitions"); | |
| 2383 return; | |
| 2384 } | |
| 2385 else if (ad->inv && ad->inv != this) | |
| 2386 { | |
| 2387 error("more than one invariant for %s", ad->toChars()); | |
| 2388 } | |
| 2389 ad->inv = this; | |
| 2390 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2391 | |
| 2392 sc = sc->push(); | |
| 2393 sc->stc &= ~STCstatic; // not a static invariant | |
| 2394 sc->incontract++; | |
| 2395 sc->linkage = LINKd; | |
| 2396 | |
| 2397 FuncDeclaration::semantic(sc); | |
| 2398 | |
| 2399 sc->pop(); | |
| 2400 } | |
| 2401 | |
| 2402 int InvariantDeclaration::isVirtual() | |
| 2403 { | |
| 2404 return FALSE; | |
| 2405 } | |
| 2406 | |
| 2407 int InvariantDeclaration::addPreInvariant() | |
| 2408 { | |
| 2409 return FALSE; | |
| 2410 } | |
| 2411 | |
| 2412 int InvariantDeclaration::addPostInvariant() | |
| 2413 { | |
| 2414 return FALSE; | |
| 2415 } | |
| 2416 | |
| 2417 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2418 { | |
| 2419 if (hgs->hdrgen) | |
| 2420 return; | |
| 2421 buf->writestring("invariant"); | |
| 2422 bodyToCBuffer(buf, hgs); | |
| 2423 } | |
| 2424 | |
| 2425 | |
| 2426 /********************************* UnitTestDeclaration ****************************/ | |
| 2427 | |
| 2428 /******************************* | |
| 2429 * Generate unique unittest function Id so we can have multiple | |
| 2430 * instances per module. | |
| 2431 */ | |
| 2432 | |
| 2433 static Identifier *unitTestId() | |
| 2434 { | |
| 2435 static int n; | |
| 2436 char buffer[10 + sizeof(n)*3 + 1]; | |
| 2437 | |
| 2438 sprintf(buffer,"__unittest%d", n); | |
| 2439 n++; | |
| 2440 return Lexer::idPool(buffer); | |
| 2441 } | |
| 2442 | |
| 2443 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
| 2444 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
| 2445 { | |
| 2446 } | |
| 2447 | |
| 2448 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
| 2449 { | |
| 2450 UnitTestDeclaration *utd; | |
| 2451 | |
| 2452 assert(!s); | |
| 2453 utd = new UnitTestDeclaration(loc, endloc); | |
| 2454 return FuncDeclaration::syntaxCopy(utd); | |
| 2455 } | |
| 2456 | |
| 2457 | |
| 2458 void UnitTestDeclaration::semantic(Scope *sc) | |
| 2459 { | |
| 2460 if (global.params.useUnitTests) | |
| 2461 { | |
| 2462 Type *tret; | |
| 2463 | |
| 2464 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2465 FuncDeclaration::semantic(sc); | |
| 2466 } | |
| 2467 | |
| 2468 // We're going to need ModuleInfo even if the unit tests are not | |
| 2469 // compiled in, because other modules may import this module and refer | |
| 2470 // to this ModuleInfo. | |
| 2471 Module *m = getModule(); | |
| 2472 if (!m) | |
| 2473 m = sc->module; | |
| 2474 if (m) | |
| 2475 m->needmoduleinfo = 1; | |
| 2476 } | |
| 2477 | |
| 2478 AggregateDeclaration *UnitTestDeclaration::isThis() | |
| 2479 { | |
| 2480 return NULL; | |
| 2481 } | |
| 2482 | |
| 2483 int UnitTestDeclaration::isVirtual() | |
| 2484 { | |
| 2485 return FALSE; | |
| 2486 } | |
| 2487 | |
| 2488 int UnitTestDeclaration::addPreInvariant() | |
| 2489 { | |
| 2490 return FALSE; | |
| 2491 } | |
| 2492 | |
| 2493 int UnitTestDeclaration::addPostInvariant() | |
| 2494 { | |
| 2495 return FALSE; | |
| 2496 } | |
| 2497 | |
| 2498 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2499 { | |
| 2500 if (hgs->hdrgen) | |
| 2501 return; | |
| 2502 buf->writestring("unittest"); | |
| 2503 bodyToCBuffer(buf, hgs); | |
| 2504 } | |
| 2505 | |
| 2506 /********************************* NewDeclaration ****************************/ | |
| 2507 | |
| 2508 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2509 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) | |
| 2510 { | |
| 2511 this->arguments = arguments; | |
| 2512 this->varargs = varargs; | |
| 2513 } | |
| 2514 | |
| 2515 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
| 2516 { | |
| 2517 NewDeclaration *f; | |
| 2518 | |
| 2519 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
| 2520 | |
| 2521 FuncDeclaration::syntaxCopy(f); | |
| 2522 | |
| 2523 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2524 | |
| 2525 return f; | |
| 2526 } | |
| 2527 | |
| 2528 | |
| 2529 void NewDeclaration::semantic(Scope *sc) | |
| 2530 { | |
| 2531 ClassDeclaration *cd; | |
| 2532 Type *tret; | |
| 2533 | |
| 2534 //printf("NewDeclaration::semantic()\n"); | |
| 2535 | |
| 2536 parent = sc->parent; | |
| 2537 Dsymbol *parent = toParent(); | |
| 2538 cd = parent->isClassDeclaration(); | |
| 2539 if (!cd && !parent->isStructDeclaration()) | |
| 2540 { | |
| 2541 error("new allocators only are for class or struct definitions"); | |
| 2542 } | |
| 2543 tret = Type::tvoid->pointerTo(); | |
| 2544 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2545 | |
| 2546 type = type->semantic(loc, sc); | |
| 2547 assert(type->ty == Tfunction); | |
| 2548 | |
| 2549 // Check that there is at least one argument of type uint | |
| 2550 TypeFunction *tf = (TypeFunction *)type; | |
| 2551 if (Argument::dim(tf->parameters) < 1) | |
| 2552 { | |
| 2553 error("at least one argument of type uint expected"); | |
| 2554 } | |
| 2555 else | |
| 2556 { | |
| 2557 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2558 if (!a->type->equals(Type::tuns32)) | |
| 2559 error("first argument must be type uint, not %s", a->type->toChars()); | |
| 2560 } | |
| 2561 | |
| 2562 FuncDeclaration::semantic(sc); | |
| 2563 } | |
| 2564 | |
| 2565 char *NewDeclaration::kind() | |
| 2566 { | |
| 2567 return "allocator"; | |
| 2568 } | |
| 2569 | |
| 2570 int NewDeclaration::isVirtual() | |
| 2571 { | |
| 2572 return FALSE; | |
| 2573 } | |
| 2574 | |
| 2575 int NewDeclaration::addPreInvariant() | |
| 2576 { | |
| 2577 return FALSE; | |
| 2578 } | |
| 2579 | |
| 2580 int NewDeclaration::addPostInvariant() | |
| 2581 { | |
| 2582 return FALSE; | |
| 2583 } | |
| 2584 | |
| 2585 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2586 { | |
| 2587 buf->writestring("new"); | |
| 2588 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2589 bodyToCBuffer(buf, hgs); | |
| 2590 } | |
| 2591 | |
| 2592 | |
| 2593 /********************************* DeleteDeclaration ****************************/ | |
| 2594 | |
| 2595 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments) | |
| 2596 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) | |
| 2597 { | |
| 2598 this->arguments = arguments; | |
| 2599 } | |
| 2600 | |
| 2601 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
| 2602 { | |
| 2603 DeleteDeclaration *f; | |
| 2604 | |
| 2605 f = new DeleteDeclaration(loc, endloc, NULL); | |
| 2606 | |
| 2607 FuncDeclaration::syntaxCopy(f); | |
| 2608 | |
| 2609 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2610 | |
| 2611 return f; | |
| 2612 } | |
| 2613 | |
| 2614 | |
| 2615 void DeleteDeclaration::semantic(Scope *sc) | |
| 2616 { | |
| 2617 ClassDeclaration *cd; | |
| 2618 | |
| 2619 //printf("DeleteDeclaration::semantic()\n"); | |
| 2620 | |
| 2621 parent = sc->parent; | |
| 2622 Dsymbol *parent = toParent(); | |
| 2623 cd = parent->isClassDeclaration(); | |
| 2624 if (!cd && !parent->isStructDeclaration()) | |
| 2625 { | |
| 2626 error("new allocators only are for class or struct definitions"); | |
| 2627 } | |
| 2628 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
| 2629 | |
| 2630 type = type->semantic(loc, sc); | |
| 2631 assert(type->ty == Tfunction); | |
| 2632 | |
| 2633 // Check that there is only one argument of type void* | |
| 2634 TypeFunction *tf = (TypeFunction *)type; | |
| 2635 if (Argument::dim(tf->parameters) != 1) | |
| 2636 { | |
| 2637 error("one argument of type void* expected"); | |
| 2638 } | |
| 2639 else | |
| 2640 { | |
| 2641 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2642 if (!a->type->equals(Type::tvoid->pointerTo())) | |
| 2643 error("one argument of type void* expected, not %s", a->type->toChars()); | |
| 2644 } | |
| 2645 | |
| 2646 FuncDeclaration::semantic(sc); | |
| 2647 } | |
| 2648 | |
| 2649 char *DeleteDeclaration::kind() | |
| 2650 { | |
| 2651 return "deallocator"; | |
| 2652 } | |
| 2653 | |
| 2654 int DeleteDeclaration::isDelete() | |
| 2655 { | |
| 2656 return TRUE; | |
| 2657 } | |
| 2658 | |
| 2659 int DeleteDeclaration::isVirtual() | |
| 2660 { | |
| 2661 return FALSE; | |
| 2662 } | |
| 2663 | |
| 2664 int DeleteDeclaration::addPreInvariant() | |
| 2665 { | |
| 2666 return FALSE; | |
| 2667 } | |
| 2668 | |
| 2669 int DeleteDeclaration::addPostInvariant() | |
| 2670 { | |
| 2671 return FALSE; | |
| 2672 } | |
| 2673 | |
| 2674 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2675 { | |
| 2676 buf->writestring("delete"); | |
| 2677 Argument::argsToCBuffer(buf, hgs, arguments, 0); | |
| 2678 bodyToCBuffer(buf, hgs); | |
| 2679 } | |
| 2680 | |
| 2681 | |
| 2682 | |
| 2683 |