Mercurial > projects > ldc
annotate dmd/func.c @ 132:1700239cab2e trunk
[svn r136] MAJOR UNSTABLE UPDATE!!!
Initial commit after moving to Tango instead of Phobos.
Lots of bugfixes...
This build is not suitable for most things.
| author | lindquist |
|---|---|
| date | Fri, 11 Jan 2008 17:57:40 +0100 |
| parents | a7dfa0ed966c |
| children | 0e28624814e8 |
| 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
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76 llvmQueued = false; |
|
15
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
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11
diff
changeset
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77 llvmThisVar = NULL; |
|
50
6fcc08a4d406
[svn r54] Added support for nested delegates referencing parent's stack variables.
lindquist
parents:
35
diff
changeset
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78 llvmNested = NULL; |
|
57
a9d29e9f1fed
[svn r61] Added support for D-style variadic functions :)
lindquist
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50
diff
changeset
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79 llvmArguments = NULL; |
|
a9d29e9f1fed
[svn r61] Added support for D-style variadic functions :)
lindquist
parents:
50
diff
changeset
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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
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81 llvmDwarfSubProgram = NULL; |
|
86
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
82
diff
changeset
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82 llvmRunTimeHack = false; |
| 100 | 83 llvmIRFunc = NULL; |
|
121
9c79b61fb638
[svn r125] Renamed/moved a few backend member inside DMD structures for consistency.
lindquist
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100
diff
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|
84 llvmRetArg = NULL; |
| 1 | 85 } |
| 86 | |
| 87 Dsymbol *FuncDeclaration::syntaxCopy(Dsymbol *s) | |
| 88 { | |
| 89 FuncDeclaration *f; | |
| 90 | |
| 91 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 92 if (s) | |
| 93 f = (FuncDeclaration *)s; | |
| 94 else | |
| 95 f = new FuncDeclaration(loc, endloc, ident, (enum STC) storage_class, type->syntaxCopy()); | |
| 96 f->outId = outId; | |
| 97 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 98 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 99 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 100 assert(!fthrows); // deprecated | |
| 101 return f; | |
| 102 } | |
| 103 | |
| 104 | |
| 105 // Do the semantic analysis on the external interface to the function. | |
| 106 | |
| 107 void FuncDeclaration::semantic(Scope *sc) | |
| 108 { TypeFunction *f; | |
| 109 StructDeclaration *sd; | |
| 110 ClassDeclaration *cd; | |
| 111 InterfaceDeclaration *id; | |
| 112 | |
| 113 #if 0 | |
| 114 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
| 115 if (isFuncLiteralDeclaration()) | |
| 116 printf("\tFuncLiteralDeclaration()\n"); | |
| 117 printf("sc->parent = %s\n", sc->parent->toChars()); | |
| 118 printf("type: %s\n", type->toChars()); | |
| 119 #endif | |
| 120 | |
| 121 if (type->nextOf()) | |
| 122 type = type->semantic(loc, sc); | |
| 123 //type->print(); | |
| 124 if (type->ty != Tfunction) | |
| 125 { | |
| 126 error("%s must be a function", toChars()); | |
| 127 return; | |
| 128 } | |
| 129 f = (TypeFunction *)(type); | |
| 130 size_t nparams = Argument::dim(f->parameters); | |
| 131 | |
| 132 linkage = sc->linkage; | |
| 133 // if (!parent) | |
| 134 { | |
| 135 //parent = sc->scopesym; | |
| 136 parent = sc->parent; | |
| 137 } | |
| 138 protection = sc->protection; | |
| 139 storage_class |= sc->stc; | |
| 140 //printf("function storage_class = x%x\n", storage_class); | |
| 141 Dsymbol *parent = toParent(); | |
| 142 | |
| 143 if (isConst() || isAuto() || isScope()) | |
| 144 error("functions cannot be const or auto"); | |
| 145 | |
| 146 if (isAbstract() && !isVirtual()) | |
| 147 error("non-virtual functions cannot be abstract"); | |
| 130 | 148 |
| 149 if (isAbstract() && isFinal()) | |
| 150 error("cannot be both final and abstract"); | |
| 1 | 151 #if 0 |
| 152 if (isAbstract() && fbody) | |
| 153 error("abstract functions cannot have bodies"); | |
| 154 #endif | |
| 155 | |
| 156 #if 0 | |
| 157 if (isStaticConstructor() || isStaticDestructor()) | |
| 158 { | |
| 159 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
| 160 error("static constructors / destructors must be static void"); | |
| 161 if (f->arguments && f->arguments->dim) | |
| 162 error("static constructors / destructors must have empty parameter list"); | |
| 163 // BUG: check for invalid storage classes | |
| 164 } | |
| 165 #endif | |
| 166 | |
| 167 #ifdef IN_GCC | |
| 168 AggregateDeclaration *ad; | |
| 169 | |
| 170 ad = parent->isAggregateDeclaration(); | |
| 171 if (ad) | |
| 172 ad->methods.push(this); | |
| 173 #endif | |
| 174 sd = parent->isStructDeclaration(); | |
| 175 if (sd) | |
| 176 { | |
| 177 // Verify no constructors, destructors, etc. | |
| 178 if (isCtorDeclaration() || | |
| 179 isDtorDeclaration() | |
| 180 //|| isInvariantDeclaration() | |
| 181 //|| isUnitTestDeclaration() | |
| 182 ) | |
| 183 { | |
| 184 error("special member functions not allowed for %ss", sd->kind()); | |
| 185 } | |
| 186 | |
| 187 #if 0 | |
| 188 if (!sd->inv) | |
| 189 sd->inv = isInvariantDeclaration(); | |
| 190 | |
| 191 if (!sd->aggNew) | |
| 192 sd->aggNew = isNewDeclaration(); | |
| 193 | |
| 194 if (isDelete()) | |
| 195 { | |
| 196 if (sd->aggDelete) | |
| 197 error("multiple delete's for struct %s", sd->toChars()); | |
| 198 sd->aggDelete = (DeleteDeclaration *)(this); | |
| 199 } | |
| 200 #endif | |
| 201 } | |
| 202 | |
| 203 id = parent->isInterfaceDeclaration(); | |
| 204 if (id) | |
| 205 { | |
| 206 storage_class |= STCabstract; | |
| 207 | |
| 208 if (isCtorDeclaration() || | |
| 209 isDtorDeclaration() || | |
| 210 isInvariantDeclaration() || | |
| 211 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 212 error("special function not allowed in interface %s", id->toChars()); | |
| 213 if (fbody) | |
| 214 error("function body is not abstract in interface %s", id->toChars()); | |
| 215 } | |
| 216 | |
| 217 cd = parent->isClassDeclaration(); | |
| 218 if (cd) | |
| 219 { int vi; | |
| 220 CtorDeclaration *ctor; | |
| 221 DtorDeclaration *dtor; | |
| 222 InvariantDeclaration *inv; | |
| 223 | |
| 224 if (isCtorDeclaration()) | |
| 225 { | |
| 226 // ctor = (CtorDeclaration *)this; | |
| 227 // if (!cd->ctor) | |
| 228 // cd->ctor = ctor; | |
| 229 return; | |
| 230 } | |
| 231 | |
| 232 #if 0 | |
| 233 dtor = isDtorDeclaration(); | |
| 234 if (dtor) | |
| 235 { | |
| 236 if (cd->dtor) | |
| 237 error("multiple destructors for class %s", cd->toChars()); | |
| 238 cd->dtor = dtor; | |
| 239 } | |
| 240 | |
| 241 inv = isInvariantDeclaration(); | |
| 242 if (inv) | |
| 243 { | |
| 244 cd->inv = inv; | |
| 245 } | |
| 246 | |
| 247 if (isNewDeclaration()) | |
| 248 { | |
| 249 if (!cd->aggNew) | |
| 250 cd->aggNew = (NewDeclaration *)(this); | |
| 251 } | |
| 252 | |
| 253 if (isDelete()) | |
| 254 { | |
| 255 if (cd->aggDelete) | |
| 256 error("multiple delete's for class %s", cd->toChars()); | |
| 257 cd->aggDelete = (DeleteDeclaration *)(this); | |
| 258 } | |
| 259 #endif | |
| 260 | |
| 261 if (storage_class & STCabstract) | |
| 262 cd->isabstract = 1; | |
| 263 | |
| 264 // if static function, do not put in vtbl[] | |
| 265 if (!isVirtual()) | |
| 266 { | |
| 267 //printf("\tnot virtual\n"); | |
| 19 | 268 goto Ldone; |
| 1 | 269 } |
| 270 | |
| 271 // Find index of existing function in vtbl[] to override | |
| 272 if (cd->baseClass) | |
| 273 { | |
| 274 for (vi = 0; vi < cd->baseClass->vtbl.dim; vi++) | |
| 275 { | |
| 276 FuncDeclaration *fdv = ((Dsymbol *)cd->vtbl.data[vi])->isFuncDeclaration(); | |
| 277 | |
| 278 // BUG: should give error if argument types match, | |
| 279 // but return type does not? | |
| 280 | |
| 281 //printf("\tvtbl[%d] = '%s'\n", vi, fdv ? fdv->ident->toChars() : ""); | |
| 282 if (fdv && fdv->ident == ident) | |
| 283 { | |
| 284 int cov = type->covariant(fdv->type); | |
| 285 //printf("\tbaseclass cov = %d\n", cov); | |
| 286 if (cov == 2) | |
| 287 { | |
| 288 //type->print(); | |
| 289 //fdv->type->print(); | |
| 290 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 291 error("of type %s overrides but is not covariant with %s of type %s", | |
| 292 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 293 } | |
| 294 if (cov == 1) | |
| 295 { | |
| 296 if (fdv->isFinal()) | |
| 297 error("cannot override final function %s", fdv->toPrettyChars()); | |
| 298 if (fdv->toParent() == parent) | |
| 299 { | |
| 300 // If both are mixins, then error. | |
| 301 // If either is not, the one that is not overrides | |
| 302 // the other. | |
| 303 if (fdv->parent->isClassDeclaration()) | |
| 304 goto L1; | |
| 305 if (!this->parent->isClassDeclaration() | |
| 306 #if !BREAKABI | |
| 307 && !isDtorDeclaration() | |
| 308 #endif | |
| 309 ) | |
| 310 error("multiple overrides of same function"); | |
| 311 } | |
| 312 cd->vtbl.data[vi] = (void *)this; | |
| 313 vtblIndex = vi; | |
| 314 | |
| 315 /* This works by whenever this function is called, | |
| 316 * it actually returns tintro, which gets dynamically | |
| 317 * cast to type. But we know that tintro is a base | |
| 318 * of type, so we could optimize it by not doing a | |
| 319 * dynamic cast, but just subtracting the isBaseOf() | |
| 320 * offset if the value is != null. | |
| 321 */ | |
| 322 | |
| 323 if (fdv->tintro) | |
| 324 tintro = fdv->tintro; | |
| 325 else if (!type->equals(fdv->type)) | |
| 326 { | |
| 327 /* Only need to have a tintro if the vptr | |
| 328 * offsets differ | |
| 329 */ | |
| 330 int offset; | |
| 331 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 332 { | |
| 333 tintro = fdv->type; | |
| 334 } | |
| 335 } | |
| 336 goto L1; | |
| 337 } | |
| 338 if (cov == 3) | |
| 339 { | |
| 340 cd->sizeok = 2; // can't finish due to forward reference | |
| 341 return; | |
| 342 } | |
| 343 } | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 // This is an 'introducing' function. | |
| 348 | |
| 349 // Verify this doesn't override previous final function | |
| 350 if (cd->baseClass) | |
| 351 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
| 352 if (s) | |
| 353 { | |
| 354 FuncDeclaration *f = s->isFuncDeclaration(); | |
| 355 f = f->overloadExactMatch(type); | |
| 356 if (f && f->isFinal() && f->prot() != PROTprivate) | |
| 357 error("cannot override final function %s", f->toPrettyChars()); | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 if (isFinal()) | |
| 362 { | |
| 363 cd->vtblFinal.push(this); | |
| 364 } | |
| 365 else | |
| 366 { | |
| 367 // Append to end of vtbl[] | |
| 368 //printf("\tintroducing function\n"); | |
| 369 introducing = 1; | |
| 370 vi = cd->vtbl.dim; | |
| 371 cd->vtbl.push(this); | |
| 372 vtblIndex = vi; | |
| 373 } | |
| 374 | |
| 375 L1: ; | |
| 376 | |
| 377 /* Go through all the interface bases. | |
| 378 * If this function is covariant with any members of those interface | |
| 379 * functions, set the tintro. | |
| 380 */ | |
| 381 for (int i = 0; i < cd->interfaces_dim; i++) | |
| 382 { | |
| 383 BaseClass *b = cd->interfaces[i]; | |
| 384 for (vi = 0; vi < b->base->vtbl.dim; vi++) | |
| 385 { | |
| 386 Dsymbol *s = (Dsymbol *)b->base->vtbl.data[vi]; | |
| 387 //printf("interface %d vtbl[%d] %p %s\n", i, vi, s, s->toChars()); | |
| 388 FuncDeclaration *fdv = s->isFuncDeclaration(); | |
| 389 if (fdv && fdv->ident == ident) | |
| 390 { | |
| 391 int cov = type->covariant(fdv->type); | |
| 392 //printf("\tcov = %d\n", cov); | |
| 393 if (cov == 2) | |
| 394 { | |
| 395 //type->print(); | |
| 396 //fdv->type->print(); | |
| 397 //printf("%s %s\n", type->deco, fdv->type->deco); | |
| 398 error("of type %s overrides but is not covariant with %s of type %s", | |
| 399 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
| 400 } | |
| 401 if (cov == 1) | |
| 402 { Type *ti = NULL; | |
| 403 | |
| 404 if (fdv->tintro) | |
| 405 ti = fdv->tintro; | |
| 406 else if (!type->equals(fdv->type)) | |
| 407 { | |
| 408 /* Only need to have a tintro if the vptr | |
| 409 * offsets differ | |
| 410 */ | |
| 411 int offset; | |
| 412 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 413 { | |
| 414 ti = fdv->type; | |
| 415 #if 0 | |
| 416 if (offset) | |
| 417 ti = fdv->type; | |
| 19 | 418 else if (type->nextOf()->ty == Tclass) |
| 419 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
| 1 | 420 if (cdn && cdn->sizeok != 1) |
| 421 ti = fdv->type; | |
| 422 } | |
| 423 #endif | |
| 424 } | |
| 425 } | |
| 426 if (ti) | |
| 427 { | |
| 428 if (tintro && !tintro->equals(ti)) | |
| 429 { | |
| 430 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 431 } | |
| 432 tintro = ti; | |
| 433 } | |
| 434 goto L2; | |
| 435 } | |
| 436 if (cov == 3) | |
| 437 { | |
| 438 cd->sizeok = 2; // can't finish due to forward reference | |
| 439 return; | |
| 440 } | |
| 441 } | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 if (introducing && isOverride()) | |
| 446 { | |
| 447 error("function %s does not override any", toChars()); | |
| 448 } | |
| 449 | |
| 450 L2: ; | |
| 451 } | |
| 452 else if (isOverride() && !parent->isTemplateInstance()) | |
| 453 error("override only applies to class member functions"); | |
| 454 | |
| 455 /* Do not allow template instances to add virtual functions | |
| 456 * to a class. | |
| 457 */ | |
| 458 if (isVirtual()) | |
| 459 { | |
| 460 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 461 if (ti) | |
| 462 { | |
| 463 // Take care of nested templates | |
| 464 while (1) | |
| 465 { | |
| 466 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 467 if (!ti2) | |
| 468 break; | |
| 469 ti = ti2; | |
| 470 } | |
| 471 | |
| 472 // If it's a member template | |
| 473 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
| 474 if (cd) | |
| 475 { | |
| 476 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
| 477 } | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 if (isMain()) | |
| 482 { | |
| 483 // Check parameters to see if they are either () or (char[][] args) | |
| 484 switch (nparams) | |
| 485 { | |
| 486 case 0: | |
| 487 break; | |
| 488 | |
| 489 case 1: | |
| 490 { | |
| 491 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 492 if (arg0->type->ty != Tarray || | |
| 19 | 493 arg0->type->nextOf()->ty != Tarray || |
| 494 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
| 1 | 495 arg0->storageClass & (STCout | STCref | STClazy)) |
| 496 goto Lmainerr; | |
| 497 break; | |
| 498 } | |
| 499 | |
| 500 default: | |
| 501 goto Lmainerr; | |
| 502 } | |
| 503 | |
| 504 if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
| 505 error("must return int or void, not %s", f->nextOf()->toChars()); | |
| 506 if (f->varargs) | |
| 507 { | |
| 508 Lmainerr: | |
| 509 error("parameters must be main() or main(char[][] args)"); | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 if (ident == Id::assign && (sd || cd)) | |
| 514 { // Disallow identity assignment operator. | |
| 515 | |
| 516 // opAssign(...) | |
| 517 if (nparams == 0) | |
| 518 { if (f->varargs == 1) | |
| 519 goto Lassignerr; | |
| 520 } | |
| 521 else | |
| 522 { | |
| 523 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
| 524 Type *t0 = arg0->type->toBasetype(); | |
| 525 Type *tb = sd ? sd->type : cd->type; | |
| 526 if (arg0->type->implicitConvTo(tb) || | |
| 527 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
| 528 ) | |
| 529 { | |
| 530 if (nparams == 1) | |
| 531 goto Lassignerr; | |
| 532 Argument *arg1 = Argument::getNth(f->parameters, 1); | |
| 533 if (arg1->defaultArg) | |
| 534 goto Lassignerr; | |
| 535 } | |
| 536 } | |
| 537 } | |
| 538 | |
| 19 | 539 Ldone: |
| 1 | 540 /* Save scope for possible later use (if we need the |
| 541 * function internals) | |
| 542 */ | |
| 543 scope = new Scope(*sc); | |
| 544 scope->setNoFree(); | |
| 545 return; | |
| 546 | |
| 547 Lassignerr: | |
| 548 error("identity assignment operator overload is illegal"); | |
| 549 } | |
| 550 | |
| 551 void FuncDeclaration::semantic2(Scope *sc) | |
| 552 { | |
| 553 } | |
| 554 | |
| 555 // Do the semantic analysis on the internals of the function. | |
| 556 | |
| 557 void FuncDeclaration::semantic3(Scope *sc) | |
| 558 { TypeFunction *f; | |
| 559 AggregateDeclaration *ad; | |
| 560 VarDeclaration *argptr = NULL; | |
| 561 VarDeclaration *_arguments = NULL; | |
| 562 | |
| 563 if (!parent) | |
| 564 { | |
| 92 | 565 if (global.errors) |
| 566 return; | |
| 1 | 567 printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); |
| 568 assert(0); | |
| 569 } | |
| 570 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p)\n", parent->toChars(), toChars(), sc); | |
| 571 //fflush(stdout); | |
| 572 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 573 //printf("\tlinkage = %d\n", sc->linkage); | |
| 574 | |
| 575 //printf(" sc->incontract = %d\n", sc->incontract); | |
| 576 if (semanticRun) | |
| 577 return; | |
| 578 semanticRun = 1; | |
| 579 | |
| 580 if (!type || type->ty != Tfunction) | |
| 581 return; | |
| 582 f = (TypeFunction *)(type); | |
| 583 size_t nparams = Argument::dim(f->parameters); | |
| 584 | |
| 585 // Check the 'throws' clause | |
| 586 if (fthrows) | |
| 587 { int i; | |
| 588 | |
| 589 for (i = 0; i < fthrows->dim; i++) | |
| 590 { | |
| 591 Type *t = (Type *)fthrows->data[i]; | |
| 592 | |
| 593 t = t->semantic(loc, sc); | |
| 594 if (!t->isClassHandle()) | |
| 595 error("can only throw classes, not %s", t->toChars()); | |
| 596 } | |
| 597 } | |
| 598 | |
| 599 if (fbody || frequire) | |
| 600 { | |
| 601 // Establish function scope | |
| 602 ScopeDsymbol *ss; | |
| 603 Scope *sc2; | |
| 604 | |
| 605 localsymtab = new DsymbolTable(); | |
| 606 | |
| 607 ss = new ScopeDsymbol(); | |
| 608 ss->parent = sc->scopesym; | |
| 609 sc2 = sc->push(ss); | |
| 610 sc2->func = this; | |
| 611 sc2->parent = this; | |
| 612 sc2->callSuper = 0; | |
| 613 sc2->sbreak = NULL; | |
| 614 sc2->scontinue = NULL; | |
| 615 sc2->sw = NULL; | |
| 616 sc2->fes = fes; | |
| 617 sc2->linkage = LINKd; | |
| 618 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated); | |
| 619 sc2->protection = PROTpublic; | |
| 620 sc2->explicitProtection = 0; | |
| 621 sc2->structalign = 8; | |
| 622 sc2->incontract = 0; | |
| 623 sc2->tf = NULL; | |
| 624 sc2->noctor = 0; | |
| 625 | |
| 626 // Declare 'this' | |
| 627 ad = isThis(); | |
| 628 if (ad) | |
| 629 { VarDeclaration *v; | |
| 630 | |
| 631 if (isFuncLiteralDeclaration() && isNested()) | |
| 632 { | |
| 633 error("literals cannot be class members"); | |
| 634 return; | |
| 635 } | |
| 636 else | |
| 637 { | |
| 638 assert(!isNested()); // can't be both member and nested | |
| 639 assert(ad->handle); | |
| 640 v = new ThisDeclaration(ad->handle); | |
| 641 v->storage_class |= STCparameter | STCin; | |
| 642 v->semantic(sc2); | |
| 643 if (!sc2->insert(v)) | |
| 644 assert(0); | |
| 645 v->parent = this; | |
| 646 vthis = v; | |
| 647 } | |
| 648 } | |
| 649 else if (isNested()) | |
| 650 { | |
| 651 VarDeclaration *v; | |
| 652 | |
| 653 v = new ThisDeclaration(Type::tvoid->pointerTo()); | |
| 654 v->storage_class |= STCparameter | STCin; | |
| 655 v->semantic(sc2); | |
| 656 if (!sc2->insert(v)) | |
| 657 assert(0); | |
| 658 v->parent = this; | |
| 659 vthis = v; | |
| 660 } | |
| 661 | |
| 662 // Declare hidden variable _arguments[] and _argptr | |
| 663 if (f->varargs == 1) | |
| 664 { Type *t; | |
| 665 | |
| 666 if (f->linkage == LINKd) | |
| 667 { // Declare _arguments[] | |
| 668 #if BREAKABI | |
| 669 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
| 670 v_arguments->storage_class = STCparameter | STCin; | |
| 671 v_arguments->semantic(sc2); | |
| 672 sc2->insert(v_arguments); | |
| 673 v_arguments->parent = this; | |
| 674 | |
| 675 t = Type::typeinfo->type->arrayOf(); | |
| 676 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 677 _arguments->semantic(sc2); | |
| 678 sc2->insert(_arguments); | |
| 679 _arguments->parent = this; | |
| 680 #else | |
| 681 t = Type::typeinfo->type->arrayOf(); | |
| 682 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 683 v_arguments->storage_class = STCparameter | STCin; | |
| 684 v_arguments->semantic(sc2); | |
| 685 sc2->insert(v_arguments); | |
| 686 v_arguments->parent = this; | |
| 687 #endif | |
| 688 } | |
| 689 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
| 690 { // Declare _argptr | |
| 691 #if IN_GCC | |
| 692 t = d_gcc_builtin_va_list_d_type; | |
| 693 #else | |
| 694 t = Type::tvoid->pointerTo(); | |
| 695 #endif | |
| 696 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
| 697 argptr->semantic(sc2); | |
| 698 sc2->insert(argptr); | |
| 699 argptr->parent = this; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 // Propagate storage class from tuple arguments to their sub-arguments. | |
| 704 if (f->parameters) | |
| 705 { | |
| 706 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 707 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 708 | |
| 709 if (arg->type->ty == Ttuple) | |
| 710 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 711 size_t dim = Argument::dim(t->arguments); | |
| 712 for (size_t j = 0; j < dim; j++) | |
| 713 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 714 narg->storageClass = arg->storageClass; | |
| 715 } | |
| 716 } | |
| 717 } | |
| 718 } | |
| 719 | |
| 720 // Declare all the function parameters as variables | |
| 721 if (nparams) | |
| 722 { // parameters[] has all the tuples removed, as the back end | |
| 723 // doesn't know about tuples | |
| 724 parameters = new Dsymbols(); | |
| 725 parameters->reserve(nparams); | |
| 726 for (size_t i = 0; i < nparams; i++) | |
| 727 { | |
| 728 Argument *arg = Argument::getNth(f->parameters, i); | |
| 729 Identifier *id = arg->ident; | |
| 730 if (!id) | |
| 731 { | |
| 732 //error("no identifier for parameter %d of %s", i + 1, toChars()); | |
| 733 OutBuffer buf; | |
| 734 buf.printf("_param_%zu", i); | |
| 735 char *name = (char *)buf.extractData(); | |
| 736 id = new Identifier(name, TOKidentifier); | |
| 737 arg->ident = id; | |
| 738 } | |
| 739 VarDeclaration *v = new VarDeclaration(0, arg->type, id, NULL); | |
| 740 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 741 v->storage_class |= STCparameter; | |
| 742 if (f->varargs == 2 && i + 1 == nparams) | |
| 743 v->storage_class |= STCvariadic; | |
| 744 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
| 745 if (v->storage_class & STClazy) | |
| 746 v->storage_class |= STCin; | |
| 747 v->semantic(sc2); | |
| 748 if (!sc2->insert(v)) | |
| 749 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 750 else | |
| 751 parameters->push(v); | |
| 752 localsymtab->insert(v); | |
| 753 v->parent = this; | |
| 754 // for llvm d | |
| 755 arg->vardecl = v; | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 // Declare the tuple symbols and put them in the symbol table, | |
| 760 // but not in parameters[]. | |
| 761 if (f->parameters) | |
| 762 { | |
| 763 for (size_t i = 0; i < f->parameters->dim; i++) | |
| 764 { Argument *arg = (Argument *)f->parameters->data[i]; | |
| 765 | |
| 766 if (!arg->ident) | |
| 767 continue; // never used, so ignore | |
| 768 if (arg->type->ty == Ttuple) | |
| 769 { TypeTuple *t = (TypeTuple *)arg->type; | |
| 770 size_t dim = Argument::dim(t->arguments); | |
| 771 Objects *exps = new Objects(); | |
| 772 exps->setDim(dim); | |
| 773 for (size_t j = 0; j < dim; j++) | |
| 774 { Argument *narg = Argument::getNth(t->arguments, j); | |
| 775 assert(narg->ident); | |
| 776 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
| 777 assert(v); | |
| 778 Expression *e = new VarExp(0, v); | |
| 779 exps->data[j] = (void *)e; | |
| 780 } | |
| 781 assert(arg->ident); | |
| 782 TupleDeclaration *v = new TupleDeclaration(0, arg->ident, exps); | |
| 783 //printf("declaring tuple %s\n", v->toChars()); | |
| 784 v->isexp = 1; | |
| 785 if (!sc2->insert(v)) | |
| 786 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 787 localsymtab->insert(v); | |
| 788 v->parent = this; | |
| 789 } | |
| 790 } | |
| 791 } | |
| 792 | |
| 793 sc2->incontract++; | |
| 794 | |
| 795 if (frequire) | |
| 796 { | |
| 797 // BUG: need to error if accessing out parameters | |
| 798 // BUG: need to treat parameters as const | |
| 799 // BUG: need to disallow returns and throws | |
| 800 // BUG: verify that all in and ref parameters are read | |
| 801 frequire = frequire->semantic(sc2); | |
| 802 labtab = NULL; // so body can't refer to labels | |
| 803 } | |
| 804 | |
| 805 if (fensure || addPostInvariant()) | |
| 806 { | |
| 807 ScopeDsymbol *sym; | |
| 808 | |
| 809 sym = new ScopeDsymbol(); | |
| 810 sym->parent = sc2->scopesym; | |
| 811 sc2 = sc2->push(sym); | |
| 812 | |
| 813 assert(type->nextOf()); | |
| 814 if (type->nextOf()->ty == Tvoid) | |
| 815 { | |
| 816 if (outId) | |
| 817 error("void functions have no result"); | |
| 818 } | |
| 819 else | |
| 820 { | |
| 821 if (!outId) | |
| 822 outId = Id::result; // provide a default | |
| 823 } | |
| 824 | |
| 825 if (outId) | |
| 826 { // Declare result variable | |
| 827 VarDeclaration *v; | |
| 828 Loc loc = this->loc; | |
| 829 | |
| 830 if (fensure) | |
| 831 loc = fensure->loc; | |
| 832 | |
| 833 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
| 834 v->noauto = 1; | |
| 835 sc2->incontract--; | |
| 836 v->semantic(sc2); | |
| 837 sc2->incontract++; | |
| 838 if (!sc2->insert(v)) | |
| 839 error("out result %s is already defined", v->toChars()); | |
| 840 v->parent = this; | |
| 841 vresult = v; | |
| 842 | |
| 843 // vresult gets initialized with the function return value | |
| 844 // in ReturnStatement::semantic() | |
| 845 } | |
| 846 | |
| 847 // BUG: need to treat parameters as const | |
| 848 // BUG: need to disallow returns and throws | |
| 849 if (fensure) | |
| 850 { fensure = fensure->semantic(sc2); | |
| 851 labtab = NULL; // so body can't refer to labels | |
| 852 } | |
| 853 | |
| 854 if (!global.params.useOut) | |
| 855 { fensure = NULL; // discard | |
| 856 vresult = NULL; | |
| 857 } | |
| 858 | |
| 859 // Postcondition invariant | |
| 860 if (addPostInvariant()) | |
| 861 { | |
| 862 Expression *e = NULL; | |
| 863 if (isCtorDeclaration()) | |
| 864 { | |
| 865 // Call invariant directly only if it exists | |
| 866 InvariantDeclaration *inv = ad->inv; | |
| 867 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 868 | |
| 869 while (!inv && cd) | |
| 870 { | |
| 871 cd = cd->baseClass; | |
| 872 if (!cd) | |
| 873 break; | |
| 874 inv = cd->inv; | |
| 875 } | |
| 876 if (inv) | |
| 877 { | |
| 878 e = new DsymbolExp(0, inv); | |
| 879 e = new CallExp(0, e); | |
| 880 e = e->semantic(sc2); | |
| 881 } | |
| 882 } | |
| 883 else | |
| 884 { // Call invariant virtually | |
| 885 ThisExp *v = new ThisExp(0); | |
| 886 v->type = vthis->type; | |
| 887 e = new AssertExp(0, v); | |
| 888 } | |
| 889 if (e) | |
| 890 { | |
| 891 ExpStatement *s = new ExpStatement(0, e); | |
| 892 if (fensure) | |
| 893 fensure = new CompoundStatement(0, s, fensure); | |
| 894 else | |
| 895 fensure = s; | |
| 896 } | |
| 897 } | |
| 898 | |
| 899 if (fensure) | |
| 900 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
| 901 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
| 902 ls->isReturnLabel = 1; | |
| 903 returnLabel->statement = ls; | |
| 904 } | |
| 905 sc2 = sc2->pop(); | |
| 906 } | |
| 907 | |
| 908 sc2->incontract--; | |
| 909 | |
| 910 if (fbody) | |
| 911 { ClassDeclaration *cd = isClassMember(); | |
| 912 | |
| 913 if (isCtorDeclaration() && cd) | |
| 914 { | |
| 915 for (int i = 0; i < cd->fields.dim; i++) | |
| 916 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 917 | |
| 918 v->ctorinit = 0; | |
| 919 } | |
| 920 } | |
| 921 | |
| 922 if (inferRetType || f->retStyle() != RETstack) | |
| 923 nrvo_can = 0; | |
| 924 | |
| 925 fbody = fbody->semantic(sc2); | |
| 926 | |
| 927 if (inferRetType) | |
| 928 { // If no return type inferred yet, then infer a void | |
| 929 if (!type->nextOf()) | |
| 930 { | |
| 931 type->next = Type::tvoid; | |
| 932 type = type->semantic(loc, sc); | |
| 933 } | |
| 934 f = (TypeFunction *)type; | |
| 935 } | |
| 936 | |
| 937 int offend = fbody ? fbody->fallOffEnd() : TRUE; | |
| 938 | |
| 939 if (isStaticCtorDeclaration()) | |
| 940 { /* It's a static constructor. Ensure that all | |
| 941 * ctor consts were initialized. | |
| 942 */ | |
| 943 | |
|
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944 Dsymbol *p = toParent(); |
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945 ScopeDsymbol *ad = p->isScopeDsymbol(); |
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946 if (!ad) |
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947 { |
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948 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); |
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949 } |
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950 else |
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951 { |
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952 for (int i = 0; i < ad->members->dim; i++) |
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953 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; |
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954 |
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955 s->checkCtorConstInit(); |
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956 } |
| 1 | 957 } |
| 958 } | |
| 959 | |
| 960 if (isCtorDeclaration() && cd) | |
| 961 { | |
| 962 //printf("callSuper = x%x\n", sc2->callSuper); | |
| 963 | |
| 964 // Verify that all the ctorinit fields got initialized | |
| 965 if (!(sc2->callSuper & CSXthis_ctor)) | |
| 966 { | |
| 967 for (int i = 0; i < cd->fields.dim; i++) | |
| 968 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 969 | |
| 970 if (v->ctorinit == 0 && v->isCtorinit()) | |
| 971 error("missing initializer for const field %s", v->toChars()); | |
| 972 } | |
| 973 } | |
| 974 | |
| 975 if (!(sc2->callSuper & CSXany_ctor) && | |
| 976 cd->baseClass && cd->baseClass->ctor) | |
| 977 { | |
| 978 sc2->callSuper = 0; | |
| 979 | |
| 980 // Insert implicit super() at start of fbody | |
| 981 Expression *e1 = new SuperExp(0); | |
| 982 Expression *e = new CallExp(0, e1); | |
| 983 | |
| 984 unsigned errors = global.errors; | |
| 985 global.gag++; | |
| 986 e = e->semantic(sc2); | |
| 987 global.gag--; | |
| 988 if (errors != global.errors) | |
| 989 error("no match for implicit super() call in constructor"); | |
| 990 | |
| 991 Statement *s = new ExpStatement(0, e); | |
| 992 fbody = new CompoundStatement(0, s, fbody); | |
| 993 } | |
| 994 } | |
| 995 else if (fes) | |
| 996 { // For foreach(){} body, append a return 0; | |
| 997 Expression *e = new IntegerExp(0); | |
| 998 Statement *s = new ReturnStatement(0, e); | |
| 999 fbody = new CompoundStatement(0, fbody, s); | |
| 1000 assert(!returnLabel); | |
| 1001 } | |
| 1002 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
| 1003 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
| 1004 else if (!inlineAsm) | |
| 1005 { | |
| 1006 if (type->nextOf()->ty == Tvoid) | |
| 1007 { | |
| 1008 if (offend && isMain()) | |
| 1009 { // Add a return 0; statement | |
| 1010 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
| 1011 fbody = new CompoundStatement(0, fbody, s); | |
| 1012 } | |
| 1013 } | |
| 1014 else | |
| 1015 { | |
| 1016 if (offend) | |
| 1017 { Expression *e; | |
| 1018 | |
| 1019 if (global.params.warnings) | |
| 1020 { fprintf(stdmsg, "warning - "); | |
| 1021 error("no return at end of function"); | |
| 1022 } | |
| 1023 | |
| 1024 if (global.params.useAssert && | |
| 1025 !global.params.useInline) | |
| 1026 { /* Add an assert(0, msg); where the missing return | |
| 1027 * should be. | |
| 1028 */ | |
| 1029 e = new AssertExp( | |
| 1030 endloc, | |
| 1031 new IntegerExp(0), | |
| 1032 new StringExp(loc, "missing return expression") | |
| 1033 ); | |
| 1034 } | |
| 1035 else | |
| 1036 e = new HaltExp(endloc); | |
| 1037 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
| 1038 e = e->semantic(sc2); | |
| 1039 Statement *s = new ExpStatement(0, e); | |
| 1040 fbody = new CompoundStatement(0, fbody, s); | |
| 1041 } | |
| 1042 } | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 { | |
| 1047 Statements *a = new Statements(); | |
| 1048 | |
| 1049 // Merge in initialization of 'out' parameters | |
| 1050 if (parameters) | |
| 1051 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1052 { VarDeclaration *v; | |
| 1053 | |
| 1054 v = (VarDeclaration *)parameters->data[i]; | |
| 1055 if (v->storage_class & STCout) | |
| 1056 { | |
| 1057 assert(v->init); | |
| 1058 ExpInitializer *ie = v->init->isExpInitializer(); | |
| 1059 assert(ie); | |
| 1060 a->push(new ExpStatement(0, ie->exp)); | |
| 1061 } | |
| 1062 } | |
| 1063 } | |
| 1064 | |
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1065 // we'll handle variadics ourselves |
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1066 #if !IN_LLVM |
| 1 | 1067 if (argptr) |
| 1068 { // Initialize _argptr to point past non-variadic arg | |
| 1069 #if IN_GCC | |
| 1070 // Handled in FuncDeclaration::toObjFile | |
| 1071 v_argptr = argptr; | |
| 1072 v_argptr->init = new VoidInitializer(loc); | |
| 1073 #else | |
| 1074 Expression *e1; | |
| 1075 Expression *e; | |
| 1076 Type *t = argptr->type; | |
| 1077 VarDeclaration *p; | |
| 1078 unsigned offset; | |
| 1079 | |
| 1080 e1 = new VarExp(0, argptr); | |
| 1081 if (parameters && parameters->dim) | |
| 1082 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
| 1083 else | |
| 1084 p = v_arguments; // last parameter is _arguments[] | |
| 1085 offset = p->type->size(); | |
| 1086 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1087 e = new SymOffExp(0, p, offset); | |
| 1088 e = new AssignExp(0, e1, e); | |
| 1089 e->type = t; | |
| 1090 a->push(new ExpStatement(0, e)); | |
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1091 #endif // IN_GCC |
| 1 | 1092 } |
| 1093 | |
| 1094 if (_arguments) | |
| 1095 { | |
| 1096 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1097 * _arguments = v_arguments.elements; | |
| 1098 */ | |
| 1099 Expression *e = new VarExp(0, v_arguments); | |
| 1100 e = new DotIdExp(0, e, Id::elements); | |
| 1101 Expression *e1 = new VarExp(0, _arguments); | |
| 1102 e = new AssignExp(0, e1, e); | |
| 1103 e = e->semantic(sc); | |
| 1104 a->push(new ExpStatement(0, e)); | |
| 1105 } | |
| 1106 | |
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1107 #endif // !IN_LLVM |
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1108 |
| 1 | 1109 // Merge contracts together with body into one compound statement |
| 1110 | |
| 1111 #ifdef _DH | |
| 1112 if (frequire && global.params.useIn) | |
| 1113 { frequire->incontract = 1; | |
| 1114 a->push(frequire); | |
| 1115 } | |
| 1116 #else | |
| 1117 if (frequire && global.params.useIn) | |
| 1118 a->push(frequire); | |
| 1119 #endif | |
| 1120 | |
| 1121 // Precondition invariant | |
| 1122 if (addPreInvariant()) | |
| 1123 { | |
| 1124 Expression *e = NULL; | |
| 1125 if (isDtorDeclaration()) | |
| 1126 { | |
| 1127 // Call invariant directly only if it exists | |
| 1128 InvariantDeclaration *inv = ad->inv; | |
| 1129 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1130 | |
| 1131 while (!inv && cd) | |
| 1132 { | |
| 1133 cd = cd->baseClass; | |
| 1134 if (!cd) | |
| 1135 break; | |
| 1136 inv = cd->inv; | |
| 1137 } | |
| 1138 if (inv) | |
| 1139 { | |
| 1140 e = new DsymbolExp(0, inv); | |
| 1141 e = new CallExp(0, e); | |
| 1142 e = e->semantic(sc2); | |
| 1143 } | |
| 1144 } | |
| 1145 else | |
| 1146 { // Call invariant virtually | |
| 1147 ThisExp *v = new ThisExp(0); | |
| 1148 v->type = vthis->type; | |
| 1149 Expression *se = new StringExp(0, "null this"); | |
| 1150 se = se->semantic(sc); | |
| 1151 se->type = Type::tchar->arrayOf(); | |
| 1152 e = new AssertExp(loc, v, se); | |
| 1153 } | |
| 1154 if (e) | |
| 1155 { | |
| 1156 ExpStatement *s = new ExpStatement(0, e); | |
| 1157 a->push(s); | |
| 1158 } | |
| 1159 } | |
| 1160 | |
| 1161 if (fbody) | |
| 1162 a->push(fbody); | |
| 1163 | |
| 1164 if (fensure) | |
| 1165 { | |
| 1166 a->push(returnLabel->statement); | |
| 1167 | |
| 1168 if (type->nextOf()->ty != Tvoid) | |
| 1169 { | |
| 1170 // Create: return vresult; | |
| 1171 assert(vresult); | |
| 1172 Expression *e = new VarExp(0, vresult); | |
| 1173 if (tintro) | |
| 1174 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
| 1175 e = e->semantic(sc); | |
| 1176 } | |
| 1177 ReturnStatement *s = new ReturnStatement(0, e); | |
| 1178 a->push(s); | |
| 1179 } | |
| 1180 } | |
| 1181 | |
| 1182 fbody = new CompoundStatement(0, a); | |
| 1183 } | |
| 1184 | |
| 1185 sc2->callSuper = 0; | |
| 1186 sc2->pop(); | |
| 1187 } | |
| 1188 semanticRun = 2; | |
| 1189 } | |
| 1190 | |
| 1191 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1192 { | |
| 1193 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
| 1194 | |
| 1195 type->toCBuffer(buf, ident, hgs); | |
| 1196 bodyToCBuffer(buf, hgs); | |
| 1197 } | |
| 1198 | |
| 1199 | |
| 1200 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1201 { | |
| 1202 if (fbody && | |
| 1203 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
| 1204 ) | |
| 1205 { buf->writenl(); | |
| 1206 | |
| 1207 // in{} | |
| 1208 if (frequire) | |
| 1209 { buf->writestring("in"); | |
| 1210 buf->writenl(); | |
| 1211 frequire->toCBuffer(buf, hgs); | |
| 1212 } | |
| 1213 | |
| 1214 // out{} | |
| 1215 if (fensure) | |
| 1216 { buf->writestring("out"); | |
| 1217 if (outId) | |
| 1218 { buf->writebyte('('); | |
| 1219 buf->writestring(outId->toChars()); | |
| 1220 buf->writebyte(')'); | |
| 1221 } | |
| 1222 buf->writenl(); | |
| 1223 fensure->toCBuffer(buf, hgs); | |
| 1224 } | |
| 1225 | |
| 1226 if (frequire || fensure) | |
| 1227 { buf->writestring("body"); | |
| 1228 buf->writenl(); | |
| 1229 } | |
| 1230 | |
| 1231 buf->writebyte('{'); | |
| 1232 buf->writenl(); | |
| 1233 fbody->toCBuffer(buf, hgs); | |
| 1234 buf->writebyte('}'); | |
| 1235 buf->writenl(); | |
| 1236 } | |
| 1237 else | |
| 1238 { buf->writeByte(';'); | |
| 1239 buf->writenl(); | |
| 1240 } | |
| 1241 } | |
| 1242 | |
| 1243 /**************************************************** | |
| 1244 * Determine if 'this' overrides fd. | |
| 1245 * Return !=0 if it does. | |
| 1246 */ | |
| 1247 | |
| 1248 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
| 1249 { int result = 0; | |
| 1250 | |
| 1251 if (fd->ident == ident) | |
| 1252 { | |
| 1253 int cov = type->covariant(fd->type); | |
| 1254 if (cov) | |
| 1255 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
| 1256 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
| 1257 | |
| 1258 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
| 1259 result = 1; | |
| 1260 } | |
| 1261 } | |
| 1262 return result; | |
| 1263 } | |
| 1264 | |
| 1265 /**************************************************** | |
| 1266 * Overload this FuncDeclaration with the new one f. | |
| 1267 * Return !=0 if successful; i.e. no conflict. | |
| 1268 */ | |
| 1269 | |
| 1270 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
| 1271 { | |
| 1272 FuncDeclaration *f; | |
| 1273 AliasDeclaration *a; | |
| 1274 | |
| 1275 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
| 1276 a = s->isAliasDeclaration(); | |
| 1277 if (a) | |
| 1278 { | |
| 1279 if (overnext) | |
| 1280 return overnext->overloadInsert(a); | |
| 1281 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
| 1282 { | |
| 1283 //printf("\ta = '%s'\n", a->type->toChars()); | |
| 1284 return FALSE; | |
| 1285 } | |
| 1286 overnext = a; | |
| 1287 //printf("\ttrue: no conflict\n"); | |
| 1288 return TRUE; | |
| 1289 } | |
| 1290 f = s->isFuncDeclaration(); | |
| 1291 if (!f) | |
| 1292 return FALSE; | |
| 1293 | |
| 1294 if (type && f->type && // can be NULL for overloaded constructors | |
| 1295 f->type->covariant(type) && | |
| 1296 !isFuncAliasDeclaration()) | |
| 1297 { | |
| 1298 //printf("\tfalse: conflict %s\n", kind()); | |
| 1299 return FALSE; | |
| 1300 } | |
| 1301 | |
| 1302 if (overnext) | |
| 1303 return overnext->overloadInsert(f); | |
| 1304 overnext = f; | |
| 1305 //printf("\ttrue: no conflict\n"); | |
| 1306 return TRUE; | |
| 1307 } | |
| 1308 | |
| 1309 /******************************************** | |
| 1310 * Find function in overload list that exactly matches t. | |
| 1311 */ | |
| 1312 | |
| 1313 /*************************************************** | |
| 1314 * Visit each overloaded function in turn, and call | |
| 1315 * (*fp)(param, f) on it. | |
| 1316 * Exit when no more, or (*fp)(param, f) returns 1. | |
| 1317 * Returns: | |
| 1318 * 0 continue | |
| 1319 * 1 done | |
| 1320 */ | |
| 1321 | |
| 1322 int overloadApply(FuncDeclaration *fstart, | |
| 1323 int (*fp)(void *, FuncDeclaration *), | |
| 1324 void *param) | |
| 1325 { | |
| 1326 FuncDeclaration *f; | |
| 1327 Declaration *d; | |
| 1328 Declaration *next; | |
| 1329 | |
| 1330 for (d = fstart; d; d = next) | |
| 1331 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1332 | |
| 1333 if (fa) | |
| 1334 { | |
| 1335 if (overloadApply(fa->funcalias, fp, param)) | |
| 1336 return 1; | |
| 1337 next = fa->overnext; | |
| 1338 } | |
| 1339 else | |
| 1340 { | |
| 1341 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1342 | |
| 1343 if (a) | |
| 1344 { | |
| 1345 Dsymbol *s = a->toAlias(); | |
| 1346 next = s->isDeclaration(); | |
| 1347 if (next == a) | |
| 1348 break; | |
| 1349 if (next == fstart) | |
| 1350 break; | |
| 1351 } | |
| 1352 else | |
| 1353 { | |
| 1354 f = d->isFuncDeclaration(); | |
| 1355 if (!f) | |
| 1356 { d->error("is aliased to a function"); | |
| 1357 break; // BUG: should print error message? | |
| 1358 } | |
| 1359 if ((*fp)(param, f)) | |
| 1360 return 1; | |
| 1361 | |
| 1362 next = f->overnext; | |
| 1363 } | |
| 1364 } | |
| 1365 } | |
| 1366 return 0; | |
| 1367 } | |
| 1368 | |
| 1369 /******************************************** | |
| 1370 * Find function in overload list that exactly matches t. | |
| 1371 */ | |
| 1372 | |
| 1373 struct Param1 | |
| 1374 { | |
| 1375 Type *t; // type to match | |
| 1376 FuncDeclaration *f; // return value | |
| 1377 }; | |
| 1378 | |
| 1379 int fp1(void *param, FuncDeclaration *f) | |
| 1380 { Param1 *p = (Param1 *)param; | |
| 1381 Type *t = p->t; | |
| 1382 | |
| 1383 if (t->equals(f->type)) | |
| 1384 { p->f = f; | |
| 1385 return 1; | |
| 1386 } | |
| 1387 | |
| 1388 #if V2 | |
| 1389 /* Allow covariant matches, if it's just a const conversion | |
| 1390 * of the return type | |
| 1391 */ | |
| 1392 if (t->ty == Tfunction) | |
| 1393 { TypeFunction *tf = (TypeFunction *)f->type; | |
| 1394 if (tf->covariant(t) == 1 && | |
| 1395 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
| 1396 { | |
| 1397 p->f = f; | |
| 1398 return 1; | |
| 1399 } | |
| 1400 } | |
| 1401 #endif | |
| 1402 return 0; | |
| 1403 } | |
| 1404 | |
| 1405 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1406 { | |
| 1407 Param1 p; | |
| 1408 p.t = t; | |
| 1409 p.f = NULL; | |
| 1410 overloadApply(this, &fp1, &p); | |
| 1411 return p.f; | |
| 1412 } | |
| 1413 | |
| 1414 #if 0 | |
| 1415 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
| 1416 { | |
| 1417 FuncDeclaration *f; | |
| 1418 Declaration *d; | |
| 1419 Declaration *next; | |
| 1420 | |
| 1421 for (d = this; d; d = next) | |
| 1422 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1423 | |
| 1424 if (fa) | |
| 1425 { | |
| 1426 FuncDeclaration *f2 = fa->funcalias->overloadExactMatch(t); | |
| 1427 if (f2) | |
| 1428 return f2; | |
| 1429 next = fa->overnext; | |
| 1430 } | |
| 1431 else | |
| 1432 { | |
| 1433 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1434 | |
| 1435 if (a) | |
| 1436 { | |
| 1437 Dsymbol *s = a->toAlias(); | |
| 1438 next = s->isDeclaration(); | |
| 1439 if (next == a) | |
| 1440 break; | |
| 1441 } | |
| 1442 else | |
| 1443 { | |
| 1444 f = d->isFuncDeclaration(); | |
| 1445 if (!f) | |
| 1446 break; // BUG: should print error message? | |
| 1447 if (t->equals(d->type)) | |
| 1448 return f; | |
| 1449 next = f->overnext; | |
| 1450 } | |
| 1451 } | |
| 1452 } | |
| 1453 return NULL; | |
| 1454 } | |
| 1455 #endif | |
| 1456 | |
| 1457 /******************************************** | |
| 1458 * Decide which function matches the arguments best. | |
| 1459 */ | |
| 1460 | |
| 1461 struct Param2 | |
| 1462 { | |
| 1463 Match *m; | |
| 1464 Expressions *arguments; | |
| 1465 }; | |
| 1466 | |
| 1467 int fp2(void *param, FuncDeclaration *f) | |
| 1468 { Param2 *p = (Param2 *)param; | |
| 1469 Match *m = p->m; | |
| 1470 Expressions *arguments = p->arguments; | |
| 1471 MATCH match; | |
| 1472 | |
| 1473 if (f != m->lastf) // skip duplicates | |
| 1474 { | |
| 1475 TypeFunction *tf; | |
| 1476 | |
| 1477 m->anyf = f; | |
| 1478 tf = (TypeFunction *)f->type; | |
| 1479 match = (MATCH) tf->callMatch(arguments); | |
| 1480 //printf("match = %d\n", match); | |
| 1481 if (match != MATCHnomatch) | |
| 1482 { | |
| 1483 if (match > m->last) | |
| 1484 goto LfIsBetter; | |
| 1485 | |
| 1486 if (match < m->last) | |
| 1487 goto LlastIsBetter; | |
| 1488 | |
| 1489 /* See if one of the matches overrides the other. | |
| 1490 */ | |
| 1491 if (m->lastf->overrides(f)) | |
| 1492 goto LlastIsBetter; | |
| 1493 else if (f->overrides(m->lastf)) | |
| 1494 goto LfIsBetter; | |
| 1495 | |
| 1496 Lambiguous: | |
| 1497 m->nextf = f; | |
| 1498 m->count++; | |
| 1499 return 0; | |
| 1500 | |
| 1501 LfIsBetter: | |
| 1502 m->last = match; | |
| 1503 m->lastf = f; | |
| 1504 m->count = 1; | |
| 1505 return 0; | |
| 1506 | |
| 1507 LlastIsBetter: | |
| 1508 return 0; | |
| 1509 } | |
| 1510 } | |
| 1511 return 0; | |
| 1512 } | |
| 1513 | |
| 1514 | |
| 1515 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1516 { | |
| 1517 Param2 p; | |
| 1518 p.m = m; | |
| 1519 p.arguments = arguments; | |
| 1520 overloadApply(fstart, &fp2, &p); | |
| 1521 } | |
| 1522 | |
| 1523 #if 0 | |
| 1524 // Recursive helper function | |
| 1525 | |
| 1526 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
| 1527 { | |
| 1528 MATCH match; | |
| 1529 Declaration *d; | |
| 1530 Declaration *next; | |
| 1531 | |
| 1532 for (d = fstart; d; d = next) | |
| 1533 { | |
| 1534 FuncDeclaration *f; | |
| 1535 FuncAliasDeclaration *fa; | |
| 1536 AliasDeclaration *a; | |
| 1537 | |
| 1538 fa = d->isFuncAliasDeclaration(); | |
| 1539 if (fa) | |
| 1540 { | |
| 1541 overloadResolveX(m, fa->funcalias, arguments); | |
| 1542 next = fa->overnext; | |
| 1543 } | |
| 1544 else if ((f = d->isFuncDeclaration()) != NULL) | |
| 1545 { | |
| 1546 next = f->overnext; | |
| 1547 if (f == m->lastf) | |
| 1548 continue; // skip duplicates | |
| 1549 else | |
| 1550 { | |
| 1551 TypeFunction *tf; | |
| 1552 | |
| 1553 m->anyf = f; | |
| 1554 tf = (TypeFunction *)f->type; | |
| 1555 match = (MATCH) tf->callMatch(arguments); | |
| 1556 //printf("match = %d\n", match); | |
| 1557 if (match != MATCHnomatch) | |
| 1558 { | |
| 1559 if (match > m->last) | |
| 1560 goto LfIsBetter; | |
| 1561 | |
| 1562 if (match < m->last) | |
| 1563 goto LlastIsBetter; | |
| 1564 | |
| 1565 /* See if one of the matches overrides the other. | |
| 1566 */ | |
| 1567 if (m->lastf->overrides(f)) | |
| 1568 goto LlastIsBetter; | |
| 1569 else if (f->overrides(m->lastf)) | |
| 1570 goto LfIsBetter; | |
| 1571 | |
| 1572 Lambiguous: | |
| 1573 m->nextf = f; | |
| 1574 m->count++; | |
| 1575 continue; | |
| 1576 | |
| 1577 LfIsBetter: | |
| 1578 m->last = match; | |
| 1579 m->lastf = f; | |
| 1580 m->count = 1; | |
| 1581 continue; | |
| 1582 | |
| 1583 LlastIsBetter: | |
| 1584 continue; | |
| 1585 } | |
| 1586 } | |
| 1587 } | |
| 1588 else if ((a = d->isAliasDeclaration()) != NULL) | |
| 1589 { | |
| 1590 Dsymbol *s = a->toAlias(); | |
| 1591 next = s->isDeclaration(); | |
| 1592 if (next == a) | |
| 1593 break; | |
| 1594 if (next == fstart) | |
| 1595 break; | |
| 1596 } | |
| 1597 else | |
| 1598 { d->error("is aliased to a function"); | |
| 1599 break; | |
| 1600 } | |
| 1601 } | |
| 1602 } | |
| 1603 #endif | |
| 1604 | |
| 1605 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expressions *arguments) | |
| 1606 { | |
| 1607 TypeFunction *tf; | |
| 1608 Match m; | |
| 1609 | |
| 1610 #if 0 | |
| 1611 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
| 1612 if (arguments) | |
| 1613 { int i; | |
| 1614 | |
| 1615 for (i = 0; i < arguments->dim; i++) | |
| 1616 { Expression *arg; | |
| 1617 | |
| 1618 arg = (Expression *)arguments->data[i]; | |
| 1619 assert(arg->type); | |
| 1620 printf("\t%s: ", arg->toChars()); | |
| 1621 arg->type->print(); | |
| 1622 } | |
| 1623 } | |
| 1624 #endif | |
| 1625 | |
| 1626 memset(&m, 0, sizeof(m)); | |
| 1627 m.last = MATCHnomatch; | |
| 1628 overloadResolveX(&m, this, arguments); | |
| 1629 | |
| 1630 if (m.count == 1) // exactly one match | |
| 1631 { | |
| 1632 return m.lastf; | |
| 1633 } | |
| 1634 else | |
| 1635 { | |
| 1636 OutBuffer buf; | |
| 1637 | |
| 1638 if (arguments) | |
| 1639 { | |
| 1640 HdrGenState hgs; | |
| 1641 | |
| 1642 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
| 1643 } | |
| 1644 | |
| 1645 if (m.last == MATCHnomatch) | |
| 1646 { | |
| 1647 tf = (TypeFunction *)type; | |
| 1648 | |
| 1649 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
| 1650 error(loc, "%s does not match parameter types (%s)", | |
| 1651 Argument::argsTypesToChars(tf->parameters, tf->varargs), | |
| 1652 buf.toChars()); | |
| 1653 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1654 } | |
| 1655 else | |
| 1656 { | |
| 1657 #if 1 | |
| 1658 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
| 1659 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
| 1660 | |
| 1661 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1662 buf.toChars(), | |
| 1663 m.lastf->toPrettyChars(), Argument::argsTypesToChars(t1->parameters, t1->varargs), | |
| 1664 m.nextf->toPrettyChars(), Argument::argsTypesToChars(t2->parameters, t2->varargs)); | |
| 1665 #else | |
| 1666 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1667 m.lastf->type->toChars(), | |
| 1668 m.nextf->type->toChars(), | |
| 1669 m.lastf->toChars()); | |
| 1670 #endif | |
| 1671 return m.lastf; | |
| 1672 } | |
| 1673 } | |
| 1674 } | |
| 1675 | |
| 1676 /******************************** | |
| 1677 * Labels are in a separate scope, one per function. | |
| 1678 */ | |
| 1679 | |
| 1680 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
| 1681 { Dsymbol *s; | |
| 1682 | |
| 1683 if (!labtab) | |
| 1684 labtab = new DsymbolTable(); // guess we need one | |
| 1685 | |
| 1686 s = labtab->lookup(ident); | |
| 1687 if (!s) | |
| 1688 { | |
| 1689 s = new LabelDsymbol(ident); | |
| 1690 labtab->insert(s); | |
| 1691 } | |
| 1692 return (LabelDsymbol *)s; | |
| 1693 } | |
| 1694 | |
| 1695 AggregateDeclaration *FuncDeclaration::isThis() | |
| 1696 { AggregateDeclaration *ad; | |
| 1697 | |
| 1698 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
| 1699 ad = NULL; | |
| 1700 if ((storage_class & STCstatic) == 0) | |
| 1701 { | |
| 1702 ad = isMember2(); | |
| 1703 } | |
| 1704 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
| 1705 return ad; | |
| 1706 } | |
| 1707 | |
| 1708 AggregateDeclaration *FuncDeclaration::isMember2() | |
| 1709 { AggregateDeclaration *ad; | |
| 1710 | |
| 1711 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
| 1712 ad = NULL; | |
| 1713 for (Dsymbol *s = this; s; s = s->parent) | |
| 1714 { | |
| 1715 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
| 1716 ad = s->isMember(); | |
| 1717 if (ad) | |
| 1718 { //printf("test4\n"); | |
| 1719 break; | |
| 1720 } | |
| 1721 if (!s->parent || | |
| 1722 (!s->parent->isTemplateInstance())) | |
| 1723 { //printf("test5\n"); | |
| 1724 break; | |
| 1725 } | |
| 1726 } | |
| 1727 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
| 1728 return ad; | |
| 1729 } | |
| 1730 | |
| 1731 /***************************************** | |
| 1732 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 1733 * Error if this cannot call fd. | |
| 1734 * Returns: | |
| 1735 * 0 same level | |
| 1736 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 1737 * >0 decrease nesting by number | |
| 1738 */ | |
| 1739 | |
| 1740 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
| 1741 { int level; | |
| 1742 Dsymbol *s; | |
| 1743 Dsymbol *fdparent; | |
| 1744 | |
| 1745 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
| 1746 fdparent = fd->toParent2(); | |
| 1747 if (fdparent == this) | |
| 1748 return -1; | |
| 1749 s = this; | |
| 1750 level = 0; | |
| 1751 while (fd != s && fdparent != s->toParent2()) | |
| 1752 { | |
| 1753 //printf("\ts = '%s'\n", s->toChars()); | |
| 1754 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
| 1755 if (thisfd) | |
| 1756 { if (!thisfd->isNested() && !thisfd->vthis) | |
| 1757 goto Lerr; | |
| 1758 } | |
| 1759 else | |
| 1760 { | |
| 1761 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
| 1762 if (thiscd) | |
| 1763 { if (!thiscd->isNested()) | |
| 1764 goto Lerr; | |
| 1765 } | |
| 1766 else | |
| 1767 goto Lerr; | |
| 1768 } | |
| 1769 | |
| 1770 s = s->toParent2(); | |
| 1771 assert(s); | |
| 1772 level++; | |
| 1773 } | |
| 1774 return level; | |
| 1775 | |
| 1776 Lerr: | |
| 1777 error(loc, "cannot access frame of function %s", fd->toChars()); | |
| 1778 return 1; | |
| 1779 } | |
| 1780 | |
| 1781 void FuncDeclaration::appendExp(Expression *e) | |
| 1782 { Statement *s; | |
| 1783 | |
| 1784 s = new ExpStatement(0, e); | |
| 1785 appendState(s); | |
| 1786 } | |
| 1787 | |
| 1788 void FuncDeclaration::appendState(Statement *s) | |
| 1789 { CompoundStatement *cs; | |
| 1790 | |
| 1791 if (!fbody) | |
| 1792 { Statements *a; | |
| 1793 | |
| 1794 a = new Statements(); | |
| 1795 fbody = new CompoundStatement(0, a); | |
| 1796 } | |
| 1797 cs = fbody->isCompoundStatement(); | |
| 1798 cs->statements->push(s); | |
| 1799 } | |
| 1800 | |
| 1801 | |
| 1802 int FuncDeclaration::isMain() | |
| 1803 { | |
| 1804 return ident == Id::main && | |
| 1805 linkage != LINKc && !isMember() && !isNested(); | |
| 1806 } | |
| 1807 | |
| 1808 int FuncDeclaration::isWinMain() | |
| 1809 { | |
| 1810 return ident == Id::WinMain && | |
| 1811 linkage != LINKc && !isMember(); | |
| 1812 } | |
| 1813 | |
| 1814 int FuncDeclaration::isDllMain() | |
| 1815 { | |
| 1816 return ident == Id::DllMain && | |
| 1817 linkage != LINKc && !isMember(); | |
| 1818 } | |
| 1819 | |
| 1820 int FuncDeclaration::isExport() | |
| 1821 { | |
| 1822 return protection == PROTexport; | |
| 1823 } | |
| 1824 | |
| 1825 int FuncDeclaration::isImportedSymbol() | |
| 1826 { | |
| 1827 //printf("isImportedSymbol()\n"); | |
| 1828 //printf("protection = %d\n", protection); | |
| 1829 return (protection == PROTexport) && !fbody; | |
| 1830 } | |
| 1831 | |
| 1832 // Determine if function goes into virtual function pointer table | |
| 1833 | |
| 1834 int FuncDeclaration::isVirtual() | |
| 1835 { | |
| 1836 #if 0 | |
| 1837 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
| 1838 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
| 1839 printf("result is %d\n", | |
| 1840 isMember() && | |
| 1841 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1842 toParent()->isClassDeclaration()); | |
| 1843 #endif | |
| 1844 return isMember() && | |
| 1845 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 1846 toParent()->isClassDeclaration(); | |
| 1847 } | |
| 1848 | |
| 1849 int FuncDeclaration::isAbstract() | |
| 1850 { | |
| 1851 return storage_class & STCabstract; | |
| 1852 } | |
| 1853 | |
| 1854 int FuncDeclaration::isCodeseg() | |
| 1855 { | |
| 1856 return TRUE; // functions are always in the code segment | |
| 1857 } | |
| 1858 | |
| 1859 // Determine if function needs | |
| 1860 // a static frame pointer to its lexically enclosing function | |
| 1861 | |
| 1862 int FuncDeclaration::isNested() | |
| 1863 { | |
| 1864 //if (!toParent()) | |
| 1865 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
| 1866 //printf("\ttoParent() = '%s'\n", toParent()->toChars()); | |
| 1867 return ((storage_class & STCstatic) == 0) && | |
| 1868 (toParent2()->isFuncDeclaration() != NULL); | |
| 1869 } | |
| 1870 | |
| 1871 int FuncDeclaration::needThis() | |
| 1872 { | |
| 1873 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
| 1874 int i = isThis() != NULL; | |
| 1875 //printf("\t%d\n", i); | |
| 1876 if (!i && isFuncAliasDeclaration()) | |
| 1877 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
| 1878 return i; | |
| 1879 } | |
| 1880 | |
| 1881 int FuncDeclaration::addPreInvariant() | |
| 1882 { | |
| 1883 AggregateDeclaration *ad = isThis(); | |
| 1884 return (ad && | |
| 1885 //ad->isClassDeclaration() && | |
| 1886 global.params.useInvariants && | |
| 1887 (protection == PROTpublic || protection == PROTexport) && | |
| 1888 !naked); | |
| 1889 } | |
| 1890 | |
| 1891 int FuncDeclaration::addPostInvariant() | |
| 1892 { | |
| 1893 AggregateDeclaration *ad = isThis(); | |
| 1894 return (ad && | |
| 1895 ad->inv && | |
| 1896 //ad->isClassDeclaration() && | |
| 1897 global.params.useInvariants && | |
| 1898 (protection == PROTpublic || protection == PROTexport) && | |
| 1899 !naked); | |
| 1900 } | |
| 1901 | |
| 1902 /********************************** | |
| 1903 * Generate a FuncDeclaration for a runtime library function. | |
| 1904 */ | |
| 1905 | |
| 1906 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, char *name) | |
| 1907 { | |
| 1908 return genCfunc(treturn, Lexer::idPool(name)); | |
| 1909 } | |
| 1910 | |
| 1911 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, Identifier *id) | |
| 1912 { | |
| 1913 FuncDeclaration *fd; | |
| 1914 TypeFunction *tf; | |
| 1915 Dsymbol *s; | |
| 1916 static DsymbolTable *st = NULL; | |
| 1917 | |
| 1918 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
| 1919 //printf("treturn\n\t"); treturn->print(); | |
| 1920 | |
| 1921 // See if already in table | |
| 1922 if (!st) | |
| 1923 st = new DsymbolTable(); | |
| 1924 s = st->lookup(id); | |
| 1925 if (s) | |
| 1926 { | |
| 1927 fd = s->isFuncDeclaration(); | |
| 1928 assert(fd); | |
| 1929 assert(fd->type->nextOf()->equals(treturn)); | |
| 1930 } | |
| 1931 else | |
| 1932 { | |
| 1933 tf = new TypeFunction(NULL, treturn, 0, LINKc); | |
| 1934 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); | |
| 1935 fd->protection = PROTpublic; | |
| 1936 fd->linkage = LINKc; | |
| 1937 | |
| 1938 st->insert(fd); | |
| 1939 } | |
| 1940 return fd; | |
| 1941 } | |
| 1942 | |
| 1943 char *FuncDeclaration::kind() | |
| 1944 { | |
| 1945 return "function"; | |
| 1946 } | |
| 1947 | |
| 1948 /****************************** FuncAliasDeclaration ************************/ | |
| 1949 | |
| 1950 // Used as a way to import a set of functions from another scope into this one. | |
| 1951 | |
| 1952 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
| 1953 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
| 1954 (enum STC)funcalias->storage_class, funcalias->type) | |
| 1955 { | |
| 1956 assert(funcalias != this); | |
| 1957 this->funcalias = funcalias; | |
| 1958 } | |
| 1959 | |
| 1960 char *FuncAliasDeclaration::kind() | |
| 1961 { | |
| 1962 return "function alias"; | |
| 1963 } | |
| 1964 | |
| 1965 | |
| 1966 /****************************** FuncLiteralDeclaration ************************/ | |
| 1967 | |
| 1968 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
| 1969 enum TOK tok, ForeachStatement *fes) | |
| 1970 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
| 1971 { | |
| 1972 char *id; | |
| 1973 | |
| 1974 if (fes) | |
| 1975 id = "__foreachbody"; | |
| 1976 else if (tok == TOKdelegate) | |
| 1977 id = "__dgliteral"; | |
| 1978 else | |
| 1979 id = "__funcliteral"; | |
| 1980 this->ident = Identifier::generateId(id); | |
| 1981 this->tok = tok; | |
| 1982 this->fes = fes; | |
| 1983 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
| 1984 } | |
| 1985 | |
| 1986 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
| 1987 { | |
| 1988 FuncLiteralDeclaration *f; | |
| 1989 | |
| 1990 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 1991 if (s) | |
| 1992 f = (FuncLiteralDeclaration *)s; | |
| 1993 else | |
| 1994 f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); | |
| 1995 FuncDeclaration::syntaxCopy(f); | |
| 1996 return f; | |
| 1997 } | |
| 1998 | |
| 1999 int FuncLiteralDeclaration::isNested() | |
| 2000 { | |
| 2001 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
| 2002 return (tok == TOKdelegate); | |
| 2003 } | |
| 2004 | |
| 2005 char *FuncLiteralDeclaration::kind() | |
| 2006 { | |
| 2007 // GCC requires the (char*) casts | |
| 2008 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
| 2009 } | |
| 2010 | |
| 2011 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2012 { | |
| 2013 static Identifier *idfunc; | |
| 2014 static Identifier *iddel; | |
| 2015 | |
| 2016 if (!idfunc) | |
| 2017 idfunc = new Identifier("function", 0); | |
| 2018 if (!iddel) | |
| 2019 iddel = new Identifier("delegate", 0); | |
| 2020 | |
| 2021 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
| 2022 bodyToCBuffer(buf, hgs); | |
| 2023 } | |
| 2024 | |
| 2025 | |
| 2026 /********************************* CtorDeclaration ****************************/ | |
| 2027 | |
| 2028 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2029 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) | |
| 2030 { | |
| 2031 this->arguments = arguments; | |
| 2032 this->varargs = varargs; | |
| 2033 //printf("CtorDeclaration() %s\n", toChars()); | |
| 2034 } | |
| 2035 | |
| 2036 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2037 { | |
| 2038 CtorDeclaration *f; | |
| 2039 | |
| 2040 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
| 2041 | |
| 2042 f->outId = outId; | |
| 2043 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 2044 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 2045 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 2046 assert(!fthrows); // deprecated | |
| 2047 | |
| 2048 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2049 return f; | |
| 2050 } | |
| 2051 | |
| 2052 | |
| 2053 void CtorDeclaration::semantic(Scope *sc) | |
| 2054 { | |
| 2055 ClassDeclaration *cd; | |
| 2056 Type *tret; | |
| 2057 | |
| 2058 //printf("CtorDeclaration::semantic()\n"); | |
| 2059 | |
| 2060 sc = sc->push(); | |
| 2061 sc->stc &= ~STCstatic; // not a static constructor | |
| 2062 | |
| 2063 parent = sc->parent; | |
| 2064 Dsymbol *parent = toParent(); | |
| 2065 cd = parent->isClassDeclaration(); | |
| 2066 if (!cd) | |
| 2067 { | |
| 2068 error("constructors only are for class definitions"); | |
| 2069 tret = Type::tvoid; | |
| 2070 } | |
| 2071 else | |
| 2072 tret = cd->type; //->referenceTo(); | |
| 2073 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2074 | |
| 2075 sc->flags |= SCOPEctor; | |
| 2076 type = type->semantic(loc, sc); | |
| 2077 sc->flags &= ~SCOPEctor; | |
| 2078 | |
| 2079 // Append: | |
| 2080 // return this; | |
| 2081 // to the function body | |
| 2082 if (fbody) | |
| 2083 { Expression *e; | |
| 2084 Statement *s; | |
| 2085 | |
| 2086 e = new ThisExp(0); | |
| 2087 s = new ReturnStatement(0, e); | |
| 2088 fbody = new CompoundStatement(0, fbody, s); | |
| 2089 } | |
| 2090 | |
| 2091 FuncDeclaration::semantic(sc); | |
| 2092 | |
| 2093 sc->pop(); | |
| 2094 | |
| 2095 // See if it's the default constructor | |
| 2096 if (cd && varargs == 0 && Argument::dim(arguments) == 0) | |
| 2097 cd->defaultCtor = this; | |
| 2098 } | |
| 2099 | |
| 2100 char *CtorDeclaration::kind() | |
| 2101 { | |
| 2102 return "constructor"; | |
| 2103 } | |
| 2104 | |
| 2105 char *CtorDeclaration::toChars() | |
| 2106 { | |
| 2107 return "this"; | |
| 2108 } | |
| 2109 | |
| 2110 int CtorDeclaration::isVirtual() | |
| 2111 { | |
| 2112 return FALSE; | |
| 2113 } | |
| 2114 | |
| 2115 int CtorDeclaration::addPreInvariant() | |
| 2116 { | |
| 2117 return FALSE; | |
| 2118 } | |
| 2119 | |
| 2120 int CtorDeclaration::addPostInvariant() | |
| 2121 { | |
| 2122 return (vthis && global.params.useInvariants); | |
| 2123 } | |
| 2124 | |
| 2125 | |
| 2126 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2127 { | |
| 2128 buf->writestring("this"); | |
| 2129 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2130 bodyToCBuffer(buf, hgs); | |
| 2131 } | |
| 2132 | |
| 2133 /********************************* DtorDeclaration ****************************/ | |
| 2134 | |
| 2135 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
| 2136 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
| 2137 { | |
| 2138 } | |
| 2139 | |
| 2140 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2141 { | |
| 2142 DtorDeclaration *dd; | |
| 2143 | |
| 2144 assert(!s); | |
| 2145 dd = new DtorDeclaration(loc, endloc); | |
| 2146 return FuncDeclaration::syntaxCopy(dd); | |
| 2147 } | |
| 2148 | |
| 2149 | |
| 2150 void DtorDeclaration::semantic(Scope *sc) | |
| 2151 { | |
| 2152 ClassDeclaration *cd; | |
| 2153 | |
| 2154 parent = sc->parent; | |
| 2155 Dsymbol *parent = toParent(); | |
| 2156 cd = parent->isClassDeclaration(); | |
| 2157 if (!cd) | |
| 2158 { | |
| 2159 error("destructors only are for class definitions"); | |
| 2160 } | |
| 2161 else | |
| 2162 cd->dtors.push(this); | |
| 2163 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2164 | |
| 2165 sc = sc->push(); | |
| 2166 sc->stc &= ~STCstatic; // not a static destructor | |
| 2167 sc->linkage = LINKd; | |
| 2168 | |
| 2169 FuncDeclaration::semantic(sc); | |
| 2170 | |
| 2171 sc->pop(); | |
| 2172 } | |
| 2173 | |
| 2174 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
| 2175 { | |
| 2176 return FALSE; // cannot overload destructors | |
| 2177 } | |
| 2178 | |
| 2179 int DtorDeclaration::addPreInvariant() | |
| 2180 { | |
| 2181 return (vthis && global.params.useInvariants); | |
| 2182 } | |
| 2183 | |
| 2184 int DtorDeclaration::addPostInvariant() | |
| 2185 { | |
| 2186 return FALSE; | |
| 2187 } | |
| 2188 | |
| 2189 int DtorDeclaration::isVirtual() | |
| 2190 { | |
| 2191 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
| 2192 * but doing so will require recompiling everything. | |
| 2193 */ | |
| 2194 #if BREAKABI | |
| 2195 return FALSE; | |
| 2196 #else | |
| 2197 return FuncDeclaration::isVirtual(); | |
| 2198 #endif | |
| 2199 } | |
| 2200 | |
| 2201 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2202 { | |
| 2203 if (hgs->hdrgen) | |
| 2204 return; | |
| 2205 buf->writestring("~this()"); | |
| 2206 bodyToCBuffer(buf, hgs); | |
| 2207 } | |
| 2208 | |
| 2209 /********************************* StaticCtorDeclaration ****************************/ | |
| 2210 | |
| 2211 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
| 19 | 2212 : FuncDeclaration(loc, endloc, |
| 2213 Identifier::generateId("_staticCtor"), STCstatic, NULL) | |
| 1 | 2214 { |
| 2215 } | |
| 2216 | |
| 2217 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2218 { | |
| 2219 StaticCtorDeclaration *scd; | |
| 2220 | |
| 2221 assert(!s); | |
| 2222 scd = new StaticCtorDeclaration(loc, endloc); | |
| 2223 return FuncDeclaration::syntaxCopy(scd); | |
| 2224 } | |
| 2225 | |
| 2226 | |
| 2227 void StaticCtorDeclaration::semantic(Scope *sc) | |
| 2228 { | |
| 2229 //printf("StaticCtorDeclaration::semantic()\n"); | |
| 2230 | |
| 2231 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2232 | |
| 2233 FuncDeclaration::semantic(sc); | |
| 2234 | |
| 2235 // We're going to need ModuleInfo | |
| 2236 Module *m = getModule(); | |
| 2237 if (!m) | |
| 2238 m = sc->module; | |
| 2239 if (m) | |
| 2240 { m->needmoduleinfo = 1; | |
| 2241 #ifdef IN_GCC | |
| 2242 m->strictlyneedmoduleinfo = 1; | |
| 2243 #endif | |
| 2244 } | |
| 2245 } | |
| 2246 | |
| 2247 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
| 2248 { | |
| 2249 return NULL; | |
| 2250 } | |
| 2251 | |
| 2252 int StaticCtorDeclaration::isStaticConstructor() | |
| 2253 { | |
| 2254 return TRUE; | |
| 2255 } | |
| 2256 | |
| 2257 int StaticCtorDeclaration::isVirtual() | |
| 2258 { | |
| 2259 return FALSE; | |
| 2260 } | |
| 2261 | |
| 2262 int StaticCtorDeclaration::addPreInvariant() | |
| 2263 { | |
| 2264 return FALSE; | |
| 2265 } | |
| 2266 | |
| 2267 int StaticCtorDeclaration::addPostInvariant() | |
| 2268 { | |
| 2269 return FALSE; | |
| 2270 } | |
| 2271 | |
| 2272 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2273 { | |
| 2274 if (hgs->hdrgen) | |
|
35
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
2275 { buf->writestring("static this();\n"); |
| 1 | 2276 return; |
| 2277 } | |
| 2278 buf->writestring("static this()"); | |
| 2279 bodyToCBuffer(buf, hgs); | |
| 2280 } | |
| 2281 | |
| 2282 /********************************* StaticDtorDeclaration ****************************/ | |
| 2283 | |
| 2284 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
| 19 | 2285 : FuncDeclaration(loc, endloc, |
| 2286 Identifier::generateId("_staticDtor"), STCstatic, NULL) | |
| 1 | 2287 { |
| 2288 } | |
| 2289 | |
| 2290 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2291 { | |
| 2292 StaticDtorDeclaration *sdd; | |
| 2293 | |
| 2294 assert(!s); | |
| 2295 sdd = new StaticDtorDeclaration(loc, endloc); | |
| 2296 return FuncDeclaration::syntaxCopy(sdd); | |
| 2297 } | |
| 2298 | |
| 2299 | |
| 2300 void StaticDtorDeclaration::semantic(Scope *sc) | |
| 2301 { | |
| 2302 ClassDeclaration *cd; | |
| 2303 Type *tret; | |
| 2304 | |
| 2305 cd = sc->scopesym->isClassDeclaration(); | |
| 2306 if (!cd) | |
| 2307 { | |
| 2308 } | |
| 2309 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2310 | |
| 2311 FuncDeclaration::semantic(sc); | |
| 2312 | |
| 2313 // We're going to need ModuleInfo | |
| 2314 Module *m = getModule(); | |
| 2315 if (!m) | |
| 2316 m = sc->module; | |
| 2317 if (m) | |
| 2318 { m->needmoduleinfo = 1; | |
| 2319 #ifdef IN_GCC | |
| 2320 m->strictlyneedmoduleinfo = 1; | |
| 2321 #endif | |
| 2322 } | |
| 2323 } | |
| 2324 | |
| 2325 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
| 2326 { | |
| 2327 return NULL; | |
| 2328 } | |
| 2329 | |
| 2330 int StaticDtorDeclaration::isStaticDestructor() | |
| 2331 { | |
| 2332 return TRUE; | |
| 2333 } | |
| 2334 | |
| 2335 int StaticDtorDeclaration::isVirtual() | |
| 2336 { | |
| 2337 return FALSE; | |
| 2338 } | |
| 2339 | |
| 2340 int StaticDtorDeclaration::addPreInvariant() | |
| 2341 { | |
| 2342 return FALSE; | |
| 2343 } | |
| 2344 | |
| 2345 int StaticDtorDeclaration::addPostInvariant() | |
| 2346 { | |
| 2347 return FALSE; | |
| 2348 } | |
| 2349 | |
| 2350 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2351 { | |
| 2352 if (hgs->hdrgen) | |
| 2353 return; | |
| 2354 buf->writestring("static ~this()"); | |
| 2355 bodyToCBuffer(buf, hgs); | |
| 2356 } | |
| 2357 | |
| 2358 /********************************* InvariantDeclaration ****************************/ | |
| 2359 | |
| 2360 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
| 2361 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
| 2362 { | |
| 2363 } | |
| 2364 | |
| 2365 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
| 2366 { | |
| 2367 InvariantDeclaration *id; | |
| 2368 | |
| 2369 assert(!s); | |
| 2370 id = new InvariantDeclaration(loc, endloc); | |
| 2371 FuncDeclaration::syntaxCopy(id); | |
| 2372 return id; | |
| 2373 } | |
| 2374 | |
| 2375 | |
| 2376 void InvariantDeclaration::semantic(Scope *sc) | |
| 2377 { | |
| 2378 AggregateDeclaration *ad; | |
| 2379 Type *tret; | |
| 2380 | |
| 2381 parent = sc->parent; | |
| 2382 Dsymbol *parent = toParent(); | |
| 2383 ad = parent->isAggregateDeclaration(); | |
| 2384 if (!ad) | |
| 2385 { | |
| 2386 error("invariants only are for struct/union/class definitions"); | |
| 2387 return; | |
| 2388 } | |
| 2389 else if (ad->inv && ad->inv != this) | |
| 2390 { | |
| 2391 error("more than one invariant for %s", ad->toChars()); | |
| 2392 } | |
| 2393 ad->inv = this; | |
| 2394 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2395 | |
| 2396 sc = sc->push(); | |
| 2397 sc->stc &= ~STCstatic; // not a static invariant | |
| 2398 sc->incontract++; | |
| 2399 sc->linkage = LINKd; | |
| 2400 | |
| 2401 FuncDeclaration::semantic(sc); | |
| 2402 | |
| 2403 sc->pop(); | |
| 2404 } | |
| 2405 | |
| 2406 int InvariantDeclaration::isVirtual() | |
| 2407 { | |
| 2408 return FALSE; | |
| 2409 } | |
| 2410 | |
| 2411 int InvariantDeclaration::addPreInvariant() | |
| 2412 { | |
| 2413 return FALSE; | |
| 2414 } | |
| 2415 | |
| 2416 int InvariantDeclaration::addPostInvariant() | |
| 2417 { | |
| 2418 return FALSE; | |
| 2419 } | |
| 2420 | |
| 2421 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2422 { | |
| 2423 if (hgs->hdrgen) | |
| 2424 return; | |
| 2425 buf->writestring("invariant"); | |
| 2426 bodyToCBuffer(buf, hgs); | |
| 2427 } | |
| 2428 | |
| 2429 | |
| 2430 /********************************* UnitTestDeclaration ****************************/ | |
| 2431 | |
| 2432 /******************************* | |
| 2433 * Generate unique unittest function Id so we can have multiple | |
| 2434 * instances per module. | |
| 2435 */ | |
| 2436 | |
| 2437 static Identifier *unitTestId() | |
| 2438 { | |
| 2439 static int n; | |
| 2440 char buffer[10 + sizeof(n)*3 + 1]; | |
| 2441 | |
| 2442 sprintf(buffer,"__unittest%d", n); | |
| 2443 n++; | |
| 2444 return Lexer::idPool(buffer); | |
| 2445 } | |
| 2446 | |
| 2447 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
| 2448 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
| 2449 { | |
| 2450 } | |
| 2451 | |
| 2452 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
| 2453 { | |
| 2454 UnitTestDeclaration *utd; | |
| 2455 | |
| 2456 assert(!s); | |
| 2457 utd = new UnitTestDeclaration(loc, endloc); | |
| 2458 return FuncDeclaration::syntaxCopy(utd); | |
| 2459 } | |
| 2460 | |
| 2461 | |
| 2462 void UnitTestDeclaration::semantic(Scope *sc) | |
| 2463 { | |
| 2464 if (global.params.useUnitTests) | |
| 2465 { | |
| 2466 Type *tret; | |
| 2467 | |
| 2468 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
| 2469 FuncDeclaration::semantic(sc); | |
| 2470 } | |
| 2471 | |
| 2472 // We're going to need ModuleInfo even if the unit tests are not | |
| 2473 // compiled in, because other modules may import this module and refer | |
| 2474 // to this ModuleInfo. | |
| 2475 Module *m = getModule(); | |
| 2476 if (!m) | |
| 2477 m = sc->module; | |
| 2478 if (m) | |
| 2479 m->needmoduleinfo = 1; | |
| 2480 } | |
| 2481 | |
| 2482 AggregateDeclaration *UnitTestDeclaration::isThis() | |
| 2483 { | |
| 2484 return NULL; | |
| 2485 } | |
| 2486 | |
| 2487 int UnitTestDeclaration::isVirtual() | |
| 2488 { | |
| 2489 return FALSE; | |
| 2490 } | |
| 2491 | |
| 2492 int UnitTestDeclaration::addPreInvariant() | |
| 2493 { | |
| 2494 return FALSE; | |
| 2495 } | |
| 2496 | |
| 2497 int UnitTestDeclaration::addPostInvariant() | |
| 2498 { | |
| 2499 return FALSE; | |
| 2500 } | |
| 2501 | |
| 2502 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2503 { | |
| 2504 if (hgs->hdrgen) | |
| 2505 return; | |
| 2506 buf->writestring("unittest"); | |
| 2507 bodyToCBuffer(buf, hgs); | |
| 2508 } | |
| 2509 | |
| 2510 /********************************* NewDeclaration ****************************/ | |
| 2511 | |
| 2512 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
| 2513 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) | |
| 2514 { | |
| 2515 this->arguments = arguments; | |
| 2516 this->varargs = varargs; | |
| 2517 } | |
| 2518 | |
| 2519 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
| 2520 { | |
| 2521 NewDeclaration *f; | |
| 2522 | |
| 2523 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
| 2524 | |
| 2525 FuncDeclaration::syntaxCopy(f); | |
| 2526 | |
| 2527 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2528 | |
| 2529 return f; | |
| 2530 } | |
| 2531 | |
| 2532 | |
| 2533 void NewDeclaration::semantic(Scope *sc) | |
| 2534 { | |
| 2535 ClassDeclaration *cd; | |
| 2536 Type *tret; | |
| 2537 | |
| 2538 //printf("NewDeclaration::semantic()\n"); | |
| 2539 | |
| 2540 parent = sc->parent; | |
| 2541 Dsymbol *parent = toParent(); | |
| 2542 cd = parent->isClassDeclaration(); | |
| 2543 if (!cd && !parent->isStructDeclaration()) | |
| 2544 { | |
| 2545 error("new allocators only are for class or struct definitions"); | |
| 2546 } | |
| 2547 tret = Type::tvoid->pointerTo(); | |
| 2548 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
| 2549 | |
| 2550 type = type->semantic(loc, sc); | |
| 2551 assert(type->ty == Tfunction); | |
| 2552 | |
| 2553 // Check that there is at least one argument of type uint | |
| 2554 TypeFunction *tf = (TypeFunction *)type; | |
| 2555 if (Argument::dim(tf->parameters) < 1) | |
| 2556 { | |
| 2557 error("at least one argument of type uint expected"); | |
| 2558 } | |
| 2559 else | |
| 2560 { | |
| 2561 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2562 if (!a->type->equals(Type::tuns32)) | |
| 2563 error("first argument must be type uint, not %s", a->type->toChars()); | |
| 2564 } | |
| 2565 | |
| 2566 FuncDeclaration::semantic(sc); | |
| 2567 } | |
| 2568 | |
| 2569 char *NewDeclaration::kind() | |
| 2570 { | |
| 2571 return "allocator"; | |
| 2572 } | |
| 2573 | |
| 2574 int NewDeclaration::isVirtual() | |
| 2575 { | |
| 2576 return FALSE; | |
| 2577 } | |
| 2578 | |
| 2579 int NewDeclaration::addPreInvariant() | |
| 2580 { | |
| 2581 return FALSE; | |
| 2582 } | |
| 2583 | |
| 2584 int NewDeclaration::addPostInvariant() | |
| 2585 { | |
| 2586 return FALSE; | |
| 2587 } | |
| 2588 | |
| 2589 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2590 { | |
| 2591 buf->writestring("new"); | |
| 2592 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
| 2593 bodyToCBuffer(buf, hgs); | |
| 2594 } | |
| 2595 | |
| 2596 | |
| 2597 /********************************* DeleteDeclaration ****************************/ | |
| 2598 | |
| 2599 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments) | |
| 2600 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) | |
| 2601 { | |
| 2602 this->arguments = arguments; | |
| 2603 } | |
| 2604 | |
| 2605 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
| 2606 { | |
| 2607 DeleteDeclaration *f; | |
| 2608 | |
| 2609 f = new DeleteDeclaration(loc, endloc, NULL); | |
| 2610 | |
| 2611 FuncDeclaration::syntaxCopy(f); | |
| 2612 | |
| 2613 f->arguments = Argument::arraySyntaxCopy(arguments); | |
| 2614 | |
| 2615 return f; | |
| 2616 } | |
| 2617 | |
| 2618 | |
| 2619 void DeleteDeclaration::semantic(Scope *sc) | |
| 2620 { | |
| 2621 ClassDeclaration *cd; | |
| 2622 | |
| 2623 //printf("DeleteDeclaration::semantic()\n"); | |
| 2624 | |
| 2625 parent = sc->parent; | |
| 2626 Dsymbol *parent = toParent(); | |
| 2627 cd = parent->isClassDeclaration(); | |
| 2628 if (!cd && !parent->isStructDeclaration()) | |
| 2629 { | |
| 2630 error("new allocators only are for class or struct definitions"); | |
| 2631 } | |
| 2632 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
| 2633 | |
| 2634 type = type->semantic(loc, sc); | |
| 2635 assert(type->ty == Tfunction); | |
| 2636 | |
| 2637 // Check that there is only one argument of type void* | |
| 2638 TypeFunction *tf = (TypeFunction *)type; | |
| 2639 if (Argument::dim(tf->parameters) != 1) | |
| 2640 { | |
| 2641 error("one argument of type void* expected"); | |
| 2642 } | |
| 2643 else | |
| 2644 { | |
| 2645 Argument *a = Argument::getNth(tf->parameters, 0); | |
| 2646 if (!a->type->equals(Type::tvoid->pointerTo())) | |
| 2647 error("one argument of type void* expected, not %s", a->type->toChars()); | |
| 2648 } | |
| 2649 | |
| 2650 FuncDeclaration::semantic(sc); | |
| 2651 } | |
| 2652 | |
| 2653 char *DeleteDeclaration::kind() | |
| 2654 { | |
| 2655 return "deallocator"; | |
| 2656 } | |
| 2657 | |
| 2658 int DeleteDeclaration::isDelete() | |
| 2659 { | |
| 2660 return TRUE; | |
| 2661 } | |
| 2662 | |
| 2663 int DeleteDeclaration::isVirtual() | |
| 2664 { | |
| 2665 return FALSE; | |
| 2666 } | |
| 2667 | |
| 2668 int DeleteDeclaration::addPreInvariant() | |
| 2669 { | |
| 2670 return FALSE; | |
| 2671 } | |
| 2672 | |
| 2673 int DeleteDeclaration::addPostInvariant() | |
| 2674 { | |
| 2675 return FALSE; | |
| 2676 } | |
| 2677 | |
| 2678 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2679 { | |
| 2680 buf->writestring("delete"); | |
| 2681 Argument::argsToCBuffer(buf, hgs, arguments, 0); | |
| 2682 bodyToCBuffer(buf, hgs); | |
| 2683 } | |
| 2684 | |
| 2685 | |
| 2686 | |
| 2687 |