Mercurial > projects > ldc
annotate dmd/func.c @ 1638:0de4525a9ed6
Apply workaround for #395 by klickverbot.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 08 Mar 2010 20:06:08 +0100 |
| parents | 44b145be2ef5 |
| children | 9bf06e02070b |
| rev | line source |
|---|---|
| 1587 | 1 // Compiler implementation of the D programming language |
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2 // Copyright (c) 1999-2010 by Digital Mars |
| 1587 | 3 // All Rights Reserved |
| 4 // written by Walter Bright | |
| 5 // http://www.digitalmars.com | |
| 6 // License for redistribution is by either the Artistic License | |
| 7 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 8 // See the included readme.txt for details. | |
| 9 | |
| 10 #include <stdio.h> | |
| 11 #include <assert.h> | |
| 12 | |
| 13 #include "mars.h" | |
| 14 #include "init.h" | |
| 15 #include "declaration.h" | |
| 16 #include "attrib.h" | |
| 17 #include "expression.h" | |
| 18 #include "scope.h" | |
| 19 #include "mtype.h" | |
| 20 #include "aggregate.h" | |
| 21 #include "identifier.h" | |
| 22 #include "id.h" | |
| 23 #include "module.h" | |
| 24 #include "statement.h" | |
| 25 #include "template.h" | |
| 26 #include "hdrgen.h" | |
| 27 | |
| 28 #ifdef IN_GCC | |
| 29 #include "d-dmd-gcc.h" | |
| 30 #endif | |
| 31 | |
| 32 /********************************* FuncDeclaration ****************************/ | |
| 33 | |
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34 FuncDeclaration::FuncDeclaration(Loc loc, Loc endloc, Identifier *id, StorageClass storage_class, Type *type) |
| 1587 | 35 : Declaration(id) |
| 36 { | |
| 37 //printf("FuncDeclaration(id = '%s', type = %p)\n", id->toChars(), type); | |
| 38 //printf("storage_class = x%x\n", storage_class); | |
| 39 this->storage_class = storage_class; | |
| 40 this->type = type; | |
| 41 this->loc = loc; | |
| 42 this->endloc = endloc; | |
| 43 fthrows = NULL; | |
| 44 frequire = NULL; | |
| 45 fdrequire = NULL; | |
| 46 fdensure = NULL; | |
| 47 outId = NULL; | |
| 48 vresult = NULL; | |
| 49 returnLabel = NULL; | |
| 50 fensure = NULL; | |
| 51 fbody = NULL; | |
| 52 localsymtab = NULL; | |
| 53 vthis = NULL; | |
| 54 v_arguments = NULL; | |
| 55 #if IN_GCC | |
| 56 v_argptr = NULL; | |
| 57 #endif | |
| 58 parameters = NULL; | |
| 59 labtab = NULL; | |
| 60 overnext = NULL; | |
| 61 vtblIndex = -1; | |
| 62 hasReturnExp = 0; | |
| 63 naked = 0; | |
| 64 inlineStatus = ILSuninitialized; | |
| 65 inlineNest = 0; | |
| 66 inlineAsm = 0; | |
| 67 cantInterpret = 0; | |
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68 semanticRun = PASSinit; |
| 1587 | 69 #if DMDV1 |
| 70 nestedFrameRef = 0; | |
| 71 #endif | |
| 72 fes = NULL; | |
| 73 introducing = 0; | |
| 74 tintro = NULL; | |
| 75 /* The type given for "infer the return type" is a TypeFunction with | |
| 76 * NULL for the return type. | |
| 77 */ | |
| 78 inferRetType = (type && type->nextOf() == NULL); | |
| 79 hasReturnExp = 0; | |
| 80 nrvo_can = 1; | |
| 81 nrvo_var = NULL; | |
| 82 #if IN_DMD | |
| 83 shidden = NULL; | |
| 84 #endif | |
| 85 | |
| 86 #if DMDV2 | |
| 87 builtin = BUILTINunknown; | |
| 88 tookAddressOf = 0; | |
| 89 #endif | |
| 90 | |
| 91 #if IN_LLVM | |
| 92 // LDC | |
| 93 isArrayOp = false; | |
| 94 allowInlining = false; | |
| 95 | |
| 96 availableExternally = true; // assume this unless proven otherwise | |
| 97 | |
| 98 // function types in ldc don't merge if the context parameter differs | |
| 99 // so we actually don't care about the function declaration, but only | |
| 100 // what kind of context parameter it has. | |
| 101 // however, this constructor is usually called from the parser, which | |
| 102 // unfortunately doesn't provide the information needed to get to the | |
| 103 // aggregate type. So we have to stick with the FuncDeclaration and | |
| 104 // just be sure we don't actually rely on the symbol it points to, | |
| 105 // but rather just the type of its context parameter. | |
| 106 // this means some function might have a function type pointing to | |
| 107 // another function declaration | |
| 108 | |
| 109 if (type) | |
| 110 { | |
| 111 assert(type->ty == Tfunction && "invalid function type"); | |
| 112 TypeFunction* tf = (TypeFunction*)type; | |
| 113 if (tf->funcdecl == NULL) | |
| 114 tf->funcdecl = this; | |
| 115 } | |
| 116 #endif | |
| 117 } | |
| 118 | |
| 119 Dsymbol *FuncDeclaration::syntaxCopy(Dsymbol *s) | |
| 120 { | |
| 121 FuncDeclaration *f; | |
| 122 | |
| 123 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 124 if (s) | |
| 125 f = (FuncDeclaration *)s; | |
| 126 else | |
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127 f = new FuncDeclaration(loc, endloc, ident, storage_class, type->syntaxCopy()); |
| 1587 | 128 f->outId = outId; |
| 129 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 130 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 131 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 132 assert(!fthrows); // deprecated | |
| 133 | |
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134 #if IN_LLVM |
| 1587 | 135 f->intrinsicName = intrinsicName; |
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136 #endif |
| 1587 | 137 |
| 138 return f; | |
| 139 } | |
| 140 | |
| 141 | |
| 142 // Do the semantic analysis on the external interface to the function. | |
| 143 | |
| 144 void FuncDeclaration::semantic(Scope *sc) | |
| 145 { TypeFunction *f; | |
| 146 StructDeclaration *sd; | |
| 147 ClassDeclaration *cd; | |
| 148 InterfaceDeclaration *id; | |
| 149 Dsymbol *pd; | |
| 150 | |
| 151 #if 0 | |
| 152 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
| 153 if (isFuncLiteralDeclaration()) | |
| 154 printf("\tFuncLiteralDeclaration()\n"); | |
| 155 printf("sc->parent = %s, parent = %s\n", sc->parent->toChars(), parent ? parent->toChars() : ""); | |
| 156 printf("type: %p, %s\n", type, type->toChars()); | |
| 157 #endif | |
| 158 | |
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159 if (semanticRun != PASSinit && isFuncLiteralDeclaration()) |
| 1587 | 160 { |
| 161 /* Member functions that have return types that are | |
| 162 * forward references can have semantic() run more than | |
| 163 * once on them. | |
| 164 * See test\interface2.d, test20 | |
| 165 */ | |
| 166 return; | |
| 167 } | |
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168 parent = sc->parent; |
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169 Dsymbol *parent = toParent(); |
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170 |
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171 if (semanticRun == PASSsemanticdone) |
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172 { |
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173 if (!parent->isClassDeclaration()) |
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174 return; |
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175 // need to re-run semantic() in order to set the class's vtbl[] |
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176 } |
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177 else |
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178 { |
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179 assert(semanticRun <= PASSsemantic); |
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180 semanticRun = PASSsemantic; |
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181 } |
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182 |
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183 unsigned dprogress_save = Module::dprogress; |
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184 |
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185 foverrides.setDim(0); // reset in case semantic() is being retried for this function |
| 1587 | 186 |
| 187 if (!type->deco) | |
| 188 { | |
| 189 type = type->semantic(loc, sc); | |
| 190 } | |
| 191 //type->print(); | |
| 192 if (type->ty != Tfunction) | |
| 193 { | |
| 194 error("%s must be a function", toChars()); | |
| 195 return; | |
| 196 } | |
| 197 f = (TypeFunction *)(type); | |
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198 size_t nparams = Parameter::dim(f->parameters); |
| 1587 | 199 |
| 200 linkage = sc->linkage; | |
| 201 protection = sc->protection; | |
| 202 storage_class |= sc->stc; | |
| 203 //printf("function storage_class = x%x\n", storage_class); | |
| 204 | |
| 205 if (ident == Id::ctor && !isCtorDeclaration()) | |
| 206 error("_ctor is reserved for constructors"); | |
| 207 | |
| 208 if (isConst() || isAuto() || isScope()) | |
| 209 error("functions cannot be const, auto or scope"); | |
| 210 | |
| 211 if (isAbstract() && !isVirtual()) | |
| 212 error("non-virtual functions cannot be abstract"); | |
| 213 | |
| 214 if (isAbstract() && isFinal()) | |
| 215 error("cannot be both final and abstract"); | |
| 216 #if 0 | |
| 217 if (isAbstract() && fbody) | |
| 218 error("abstract functions cannot have bodies"); | |
| 219 #endif | |
| 220 | |
| 221 #if 0 | |
| 222 if (isStaticConstructor() || isStaticDestructor()) | |
| 223 { | |
| 224 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
| 225 error("static constructors / destructors must be static void"); | |
| 226 if (f->arguments && f->arguments->dim) | |
| 227 error("static constructors / destructors must have empty parameter list"); | |
| 228 // BUG: check for invalid storage classes | |
| 229 } | |
| 230 #endif | |
| 231 | |
| 232 #ifdef IN_GCC | |
| 233 AggregateDeclaration *ad; | |
| 234 | |
| 235 ad = parent->isAggregateDeclaration(); | |
| 236 if (ad) | |
| 237 ad->methods.push(this); | |
| 238 #endif | |
| 239 sd = parent->isStructDeclaration(); | |
| 240 if (sd) | |
| 241 { | |
| 242 // Verify no constructors, destructors, etc. | |
| 243 if (isCtorDeclaration() || | |
| 244 isDtorDeclaration() | |
| 245 //|| isInvariantDeclaration() | |
| 246 //|| isUnitTestDeclaration() | |
| 247 ) | |
| 248 { | |
| 249 error("special member functions not allowed for %ss", sd->kind()); | |
| 250 } | |
| 251 | |
| 252 #if 0 | |
| 253 if (!sd->inv) | |
| 254 sd->inv = isInvariantDeclaration(); | |
| 255 | |
| 256 if (!sd->aggNew) | |
| 257 sd->aggNew = isNewDeclaration(); | |
| 258 | |
| 259 if (isDelete()) | |
| 260 { | |
| 261 if (sd->aggDelete) | |
| 262 error("multiple delete's for struct %s", sd->toChars()); | |
| 263 sd->aggDelete = (DeleteDeclaration *)(this); | |
| 264 } | |
| 265 #endif | |
| 266 } | |
| 267 | |
| 268 id = parent->isInterfaceDeclaration(); | |
| 269 if (id) | |
| 270 { | |
| 271 storage_class |= STCabstract; | |
| 272 | |
| 273 if (isCtorDeclaration() || | |
| 274 #if DMDV2 | |
| 275 isPostBlitDeclaration() || | |
| 276 #endif | |
| 277 isDtorDeclaration() || | |
| 278 isInvariantDeclaration() || | |
| 279 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 280 error("special function not allowed in interface %s", id->toChars()); | |
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281 if (fbody && isVirtual()) |
| 1587 | 282 error("function body is not abstract in interface %s", id->toChars()); |
| 283 } | |
| 284 | |
| 285 /* Template member functions aren't virtual: | |
| 286 * interface TestInterface { void tpl(T)(); } | |
| 287 * and so won't work in interfaces | |
| 288 */ | |
| 289 if ((pd = toParent()) != NULL && | |
| 290 pd->isTemplateInstance() && | |
| 291 (pd = toParent2()) != NULL && | |
| 292 (id = pd->isInterfaceDeclaration()) != NULL) | |
| 293 { | |
| 294 error("template member function not allowed in interface %s", id->toChars()); | |
| 295 } | |
| 296 | |
| 297 cd = parent->isClassDeclaration(); | |
| 298 if (cd) | |
| 299 { int vi; | |
| 300 CtorDeclaration *ctor; | |
| 301 DtorDeclaration *dtor; | |
| 302 InvariantDeclaration *inv; | |
| 303 | |
| 304 if (isCtorDeclaration()) | |
| 305 { | |
| 306 // ctor = (CtorDeclaration *)this; | |
| 307 // if (!cd->ctor) | |
| 308 // cd->ctor = ctor; | |
| 309 return; | |
| 310 } | |
| 311 | |
| 312 #if 0 | |
| 313 dtor = isDtorDeclaration(); | |
| 314 if (dtor) | |
| 315 { | |
| 316 if (cd->dtor) | |
| 317 error("multiple destructors for class %s", cd->toChars()); | |
| 318 cd->dtor = dtor; | |
| 319 } | |
| 320 | |
| 321 inv = isInvariantDeclaration(); | |
| 322 if (inv) | |
| 323 { | |
| 324 cd->inv = inv; | |
| 325 } | |
| 326 | |
| 327 if (isNewDeclaration()) | |
| 328 { | |
| 329 if (!cd->aggNew) | |
| 330 cd->aggNew = (NewDeclaration *)(this); | |
| 331 } | |
| 332 | |
| 333 if (isDelete()) | |
| 334 { | |
| 335 if (cd->aggDelete) | |
| 336 error("multiple delete's for class %s", cd->toChars()); | |
| 337 cd->aggDelete = (DeleteDeclaration *)(this); | |
| 338 } | |
| 339 #endif | |
| 340 | |
| 341 if (storage_class & STCabstract) | |
| 342 cd->isabstract = 1; | |
| 343 | |
| 344 // if static function, do not put in vtbl[] | |
| 345 if (!isVirtual()) | |
| 346 { | |
| 347 //printf("\tnot virtual\n"); | |
| 348 goto Ldone; | |
| 349 } | |
| 350 | |
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351 /* Find index of existing function in base class's vtbl[] to override |
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352 * (the index will be the same as in cd's current vtbl[]) |
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353 */ |
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354 vi = cd->baseClass ? findVtblIndex(&cd->baseClass->vtbl, cd->baseClass->vtbl.dim) |
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355 : -1; |
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356 |
| 1587 | 357 switch (vi) |
| 358 { | |
| 359 case -1: | |
| 360 /* Didn't find one, so | |
| 361 * This is an 'introducing' function which gets a new | |
| 362 * slot in the vtbl[]. | |
| 363 */ | |
| 364 | |
| 365 // Verify this doesn't override previous final function | |
| 366 if (cd->baseClass) | |
| 367 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
| 368 if (s) | |
| 369 { | |
| 370 FuncDeclaration *f = s->isFuncDeclaration(); | |
| 371 f = f->overloadExactMatch(type, getModule()); | |
| 372 if (f && f->isFinal() && f->prot() != PROTprivate) | |
| 373 error("cannot override final function %s", f->toPrettyChars()); | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 if (isFinal()) | |
| 378 { | |
| 379 if (isOverride()) | |
| 380 error("does not override any function"); | |
| 381 cd->vtblFinal.push(this); | |
| 382 } | |
| 383 else | |
| 384 { | |
| 385 // Append to end of vtbl[] | |
| 386 //printf("\tintroducing function\n"); | |
| 387 introducing = 1; | |
| 388 vi = cd->vtbl.dim; | |
| 389 cd->vtbl.push(this); | |
| 390 vtblIndex = vi; | |
| 391 } | |
| 392 break; | |
| 393 | |
| 394 case -2: // can't determine because of fwd refs | |
| 395 cd->sizeok = 2; // can't finish due to forward reference | |
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396 Module::dprogress = dprogress_save; |
| 1587 | 397 return; |
| 398 | |
| 399 default: | |
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400 { FuncDeclaration *fdv = (FuncDeclaration *)cd->baseClass->vtbl.data[vi]; |
| 1587 | 401 // This function is covariant with fdv |
| 402 if (fdv->isFinal()) | |
| 403 error("cannot override final function %s", fdv->toPrettyChars()); | |
| 404 | |
| 405 #if DMDV2 | |
| 406 if (!isOverride()) | |
| 407 warning(loc, "overrides base class function %s, but is not marked with 'override'", fdv->toPrettyChars()); | |
| 408 #endif | |
| 409 | |
| 410 if (fdv->toParent() == parent) | |
| 411 { | |
| 412 // If both are mixins, then error. | |
| 413 // If either is not, the one that is not overrides | |
| 414 // the other. | |
| 415 if (fdv->parent->isClassDeclaration()) | |
| 416 break; | |
| 417 if (!this->parent->isClassDeclaration() | |
| 418 #if !BREAKABI | |
| 419 && !isDtorDeclaration() | |
| 420 #endif | |
| 421 #if DMDV2 | |
| 422 && !isPostBlitDeclaration() | |
| 423 #endif | |
| 424 ) | |
| 425 error("multiple overrides of same function"); | |
| 426 } | |
| 427 cd->vtbl.data[vi] = (void *)this; | |
| 428 vtblIndex = vi; | |
| 429 | |
| 430 /* Remember which functions this overrides | |
| 431 */ | |
| 432 foverrides.push(fdv); | |
| 433 | |
| 434 /* This works by whenever this function is called, | |
| 435 * it actually returns tintro, which gets dynamically | |
| 436 * cast to type. But we know that tintro is a base | |
| 437 * of type, so we could optimize it by not doing a | |
| 438 * dynamic cast, but just subtracting the isBaseOf() | |
| 439 * offset if the value is != null. | |
| 440 */ | |
| 441 | |
| 442 if (fdv->tintro) | |
| 443 tintro = fdv->tintro; | |
| 444 else if (!type->equals(fdv->type)) | |
| 445 { | |
| 446 /* Only need to have a tintro if the vptr | |
| 447 * offsets differ | |
| 448 */ | |
| 449 int offset; | |
| 450 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
| 451 { | |
| 452 tintro = fdv->type; | |
| 453 } | |
| 454 } | |
| 455 break; | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 /* Go through all the interface bases. | |
| 460 * If this function is covariant with any members of those interface | |
| 461 * functions, set the tintro. | |
| 462 */ | |
| 463 for (int i = 0; i < cd->interfaces_dim; i++) | |
| 464 { | |
| 465 BaseClass *b = cd->interfaces[i]; | |
| 466 vi = findVtblIndex(&b->base->vtbl, b->base->vtbl.dim); | |
| 467 switch (vi) | |
| 468 { | |
| 469 case -1: | |
| 470 break; | |
| 471 | |
| 472 case -2: | |
| 473 cd->sizeok = 2; // can't finish due to forward reference | |
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474 Module::dprogress = dprogress_save; |
| 1587 | 475 return; |
| 476 | |
| 477 default: | |
| 478 { FuncDeclaration *fdv = (FuncDeclaration *)b->base->vtbl.data[vi]; | |
| 479 Type *ti = NULL; | |
| 480 | |
| 481 /* Remember which functions this overrides | |
| 482 */ | |
| 483 foverrides.push(fdv); | |
| 484 | |
| 485 if (fdv->tintro) | |
| 486 ti = fdv->tintro; | |
| 487 else if (!type->equals(fdv->type)) | |
| 488 { | |
| 489 /* Only need to have a tintro if the vptr | |
| 490 * offsets differ | |
| 491 */ | |
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492 unsigned errors = global.errors; |
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493 global.gag++; // suppress printing of error messages |
| 1587 | 494 int offset; |
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495 int baseOf = fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset); |
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496 global.gag--; // suppress printing of error messages |
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497 if (errors != global.errors) |
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498 { |
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499 // any error in isBaseOf() is a forward reference error, so we bail out |
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500 global.errors = errors; |
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501 cd->sizeok = 2; // can't finish due to forward reference |
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502 Module::dprogress = dprogress_save; |
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503 return; |
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504 } |
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505 if (baseOf) |
| 1587 | 506 { |
| 507 ti = fdv->type; | |
| 508 } | |
| 509 } | |
| 510 if (ti) | |
| 511 { | |
| 512 if (tintro && !tintro->equals(ti)) | |
| 513 { | |
| 514 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
| 515 } | |
| 516 tintro = ti; | |
| 517 } | |
| 518 goto L2; | |
| 519 } | |
| 520 } | |
| 521 } | |
| 522 | |
| 523 if (introducing && isOverride()) | |
| 524 { | |
| 525 error("does not override any function"); | |
| 526 } | |
| 527 | |
| 528 L2: ; | |
| 529 } | |
| 530 else if (isOverride() && !parent->isTemplateInstance()) | |
| 531 error("override only applies to class member functions"); | |
| 532 | |
| 533 /* Do not allow template instances to add virtual functions | |
| 534 * to a class. | |
| 535 */ | |
| 536 if (isVirtual()) | |
| 537 { | |
| 538 TemplateInstance *ti = parent->isTemplateInstance(); | |
| 539 if (ti) | |
| 540 { | |
| 541 // Take care of nested templates | |
| 542 while (1) | |
| 543 { | |
| 544 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
| 545 if (!ti2) | |
| 546 break; | |
| 547 ti = ti2; | |
| 548 } | |
| 549 | |
| 550 // If it's a member template | |
| 551 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
| 552 if (cd) | |
| 553 { | |
| 554 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
| 555 } | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 if (isMain()) | |
| 560 { | |
| 561 // Check parameters to see if they are either () or (char[][] args) | |
| 562 switch (nparams) | |
| 563 { | |
| 564 case 0: | |
| 565 break; | |
| 566 | |
| 567 case 1: | |
| 568 { | |
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569 Parameter *arg0 = Parameter::getNth(f->parameters, 0); |
| 1587 | 570 if (arg0->type->ty != Tarray || |
| 571 arg0->type->nextOf()->ty != Tarray || | |
| 572 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
| 573 arg0->storageClass & (STCout | STCref | STClazy)) | |
| 574 goto Lmainerr; | |
| 575 break; | |
| 576 } | |
| 577 | |
| 578 default: | |
| 579 goto Lmainerr; | |
| 580 } | |
| 581 | |
| 582 if (!f->nextOf()) | |
| 583 error("must return int or void"); | |
| 584 else if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
| 585 error("must return int or void, not %s", f->nextOf()->toChars()); | |
| 586 if (f->varargs) | |
| 587 { | |
| 588 Lmainerr: | |
| 589 error("parameters must be main() or main(char[][] args)"); | |
| 590 } | |
| 591 } | |
| 592 | |
| 593 if (ident == Id::assign && (sd || cd)) | |
| 594 { // Disallow identity assignment operator. | |
| 595 | |
| 596 // opAssign(...) | |
| 597 if (nparams == 0) | |
| 598 { if (f->varargs == 1) | |
| 599 goto Lassignerr; | |
| 600 } | |
| 601 else | |
| 602 { | |
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603 Parameter *arg0 = Parameter::getNth(f->parameters, 0); |
| 1587 | 604 Type *t0 = arg0->type->toBasetype(); |
| 605 Type *tb = sd ? sd->type : cd->type; | |
| 606 if (arg0->type->implicitConvTo(tb) || | |
| 607 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
| 608 ) | |
| 609 { | |
| 610 if (nparams == 1) | |
| 611 goto Lassignerr; | |
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612 Parameter *arg1 = Parameter::getNth(f->parameters, 1); |
| 1587 | 613 if (arg1->defaultArg) |
| 614 goto Lassignerr; | |
| 615 } | |
| 616 } | |
| 617 } | |
| 618 | |
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619 if (isVirtual() && semanticRun != PASSsemanticdone) |
| 1587 | 620 { |
| 621 /* Rewrite contracts as nested functions, then call them. | |
| 622 * Doing it as nested functions means that overriding functions | |
| 623 * can call them. | |
| 624 */ | |
| 625 if (frequire) | |
| 626 { /* in { ... } | |
| 627 * becomes: | |
| 628 * void __require() { ... } | |
| 629 * __require(); | |
| 630 */ | |
| 631 Loc loc = frequire->loc; | |
| 632 TypeFunction *tf = new TypeFunction(NULL, Type::tvoid, 0, LINKd); | |
| 633 FuncDeclaration *fd = new FuncDeclaration(loc, loc, | |
| 634 Id::require, STCundefined, tf); | |
| 635 fd->fbody = frequire; | |
| 636 Statement *s1 = new DeclarationStatement(loc, fd); | |
| 637 Expression *e = new CallExp(loc, new VarExp(loc, fd), (Expressions *)NULL); | |
| 638 Statement *s2 = new ExpStatement(loc, e); | |
| 639 frequire = new CompoundStatement(loc, s1, s2); | |
| 640 fdrequire = fd; | |
| 641 } | |
| 642 | |
| 643 if (fensure) | |
| 644 { /* out (result) { ... } | |
| 645 * becomes: | |
| 646 * tret __ensure(ref tret result) { ... } | |
| 647 * __ensure(result); | |
| 648 */ | |
| 649 if (!outId && f->nextOf()->toBasetype()->ty != Tvoid) | |
| 650 outId = Id::result; // provide a default | |
| 651 | |
| 652 Loc loc = fensure->loc; | |
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653 Parameters *arguments = new Parameters(); |
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654 Parameter *a = NULL; |
| 1587 | 655 if (outId) |
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656 { a = new Parameter(STCref, f->nextOf(), outId, NULL); |
| 1587 | 657 arguments->push(a); |
| 658 } | |
| 659 TypeFunction *tf = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
| 660 FuncDeclaration *fd = new FuncDeclaration(loc, loc, | |
| 661 Id::ensure, STCundefined, tf); | |
| 662 fd->fbody = fensure; | |
| 663 Statement *s1 = new DeclarationStatement(loc, fd); | |
| 664 Expression *eresult = NULL; | |
| 665 if (outId) | |
| 666 eresult = new IdentifierExp(loc, outId); | |
| 667 Expression *e = new CallExp(loc, new VarExp(loc, fd), eresult); | |
| 668 Statement *s2 = new ExpStatement(loc, e); | |
| 669 fensure = new CompoundStatement(loc, s1, s2); | |
| 670 fdensure = fd; | |
| 671 } | |
| 672 } | |
| 673 | |
| 674 Ldone: | |
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675 Module::dprogress++; |
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676 semanticRun = PASSsemanticdone; |
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677 |
| 1587 | 678 /* Save scope for possible later use (if we need the |
| 679 * function internals) | |
| 680 */ | |
| 681 scope = new Scope(*sc); | |
| 682 scope->setNoFree(); | |
| 683 return; | |
| 684 | |
| 685 Lassignerr: | |
| 686 error("identity assignment operator overload is illegal"); | |
| 687 } | |
| 688 | |
| 689 void FuncDeclaration::semantic2(Scope *sc) | |
| 690 { | |
| 691 } | |
| 692 | |
| 693 // Do the semantic analysis on the internals of the function. | |
| 694 | |
| 695 void FuncDeclaration::semantic3(Scope *sc) | |
| 696 { TypeFunction *f; | |
| 697 VarDeclaration *argptr = NULL; | |
| 698 VarDeclaration *_arguments = NULL; | |
| 699 | |
| 700 if (!parent) | |
| 701 { | |
| 702 if (global.errors) | |
| 703 return; | |
| 704 //printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
| 705 assert(0); | |
| 706 } | |
| 707 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p, loc = %s)\n", parent->toChars(), toChars(), sc, loc.toChars()); | |
| 708 //fflush(stdout); | |
| 709 //printf("storage class = x%x %x\n", sc->stc, storage_class); | |
| 710 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 711 //printf("\tlinkage = %d\n", sc->linkage); | |
| 712 | |
| 713 //printf(" sc->incontract = %d\n", sc->incontract); | |
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714 if (semanticRun >= PASSsemantic3) |
| 1587 | 715 return; |
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716 semanticRun = PASSsemantic3; |
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717 |
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718 #if IN_LLVM |
| 1587 | 719 if (!global.params.useAvailableExternally) |
| 720 availableExternally = false; | |
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721 #endif |
| 1587 | 722 if (!type || type->ty != Tfunction) |
| 723 return; | |
| 724 f = (TypeFunction *)(type); | |
| 725 | |
| 726 // Check the 'throws' clause | |
| 727 if (fthrows) | |
| 728 { | |
| 729 for (int i = 0; i < fthrows->dim; i++) | |
| 730 { | |
| 731 Type *t = (Type *)fthrows->data[i]; | |
| 732 | |
| 733 t = t->semantic(loc, sc); | |
| 734 if (!t->isClassHandle()) | |
| 735 error("can only throw classes, not %s", t->toChars()); | |
| 736 } | |
| 737 } | |
| 738 | |
| 739 frequire = mergeFrequire(frequire); | |
| 740 fensure = mergeFensure(fensure); | |
| 741 | |
| 742 if (fbody || frequire) | |
| 743 { | |
| 744 /* Symbol table into which we place parameters and nested functions, | |
| 745 * solely to diagnose name collisions. | |
| 746 */ | |
| 747 localsymtab = new DsymbolTable(); | |
| 748 | |
| 749 // Establish function scope | |
| 750 ScopeDsymbol *ss = new ScopeDsymbol(); | |
| 751 ss->parent = sc->scopesym; | |
| 752 Scope *sc2 = sc->push(ss); | |
| 753 sc2->func = this; | |
| 754 sc2->parent = this; | |
| 755 sc2->callSuper = 0; | |
| 756 sc2->sbreak = NULL; | |
| 757 sc2->scontinue = NULL; | |
| 758 sc2->sw = NULL; | |
| 759 sc2->fes = fes; | |
| 760 sc2->linkage = LINKd; | |
| 761 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated | STCfinal); | |
| 762 sc2->protection = PROTpublic; | |
| 763 sc2->explicitProtection = 0; | |
| 764 sc2->structalign = 8; | |
| 765 sc2->incontract = 0; | |
| 766 sc2->enclosingFinally = NULL; | |
| 767 sc2->enclosingScopeExit = NULL; | |
| 768 sc2->noctor = 0; | |
| 769 | |
| 770 // Declare 'this' | |
| 771 AggregateDeclaration *ad = isThis(); | |
| 772 if (ad) | |
| 773 { VarDeclaration *v; | |
| 774 | |
| 775 if (isFuncLiteralDeclaration() && isNested()) | |
| 776 { | |
| 777 error("literals cannot be class members"); | |
| 778 return; | |
| 779 } | |
| 780 else | |
| 781 { | |
| 782 assert(!isNested()); // can't be both member and nested | |
| 783 assert(ad->handle); | |
| 784 v = new ThisDeclaration(loc, ad->handle); | |
| 785 v->storage_class |= STCparameter | STCin; | |
| 786 v->semantic(sc2); | |
| 787 if (!sc2->insert(v)) | |
| 788 assert(0); | |
| 789 v->parent = this; | |
| 790 vthis = v; | |
| 791 } | |
| 792 } | |
| 793 else if (isNested()) | |
| 794 { | |
| 795 /* The 'this' for a nested function is the link to the | |
| 796 * enclosing function's stack frame. | |
| 797 * Note that nested functions and member functions are disjoint. | |
| 798 */ | |
| 799 VarDeclaration *v = new ThisDeclaration(loc, Type::tvoid->pointerTo()); | |
| 800 v->storage_class |= STCparameter | STCin; | |
| 801 v->semantic(sc2); | |
| 802 if (!sc2->insert(v)) | |
| 803 assert(0); | |
| 804 v->parent = this; | |
| 805 vthis = v; | |
| 806 } | |
| 807 | |
| 808 // Declare hidden variable _arguments[] and _argptr | |
| 809 if (f->varargs == 1) | |
| 810 { | |
| 811 #if TARGET_NET | |
| 812 varArgs(sc2, f, argptr, _arguments); | |
| 813 #else | |
| 814 Type *t; | |
| 815 | |
| 816 if (f->linkage == LINKd) | |
| 817 { // Declare _arguments[] | |
| 818 #if BREAKABI | |
| 819 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
| 820 v_arguments->storage_class = STCparameter | STCin; | |
| 821 v_arguments->semantic(sc2); | |
| 822 sc2->insert(v_arguments); | |
| 823 v_arguments->parent = this; | |
| 824 | |
| 825 t = Type::typeinfo->type->arrayOf(); | |
| 826 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 827 _arguments->semantic(sc2); | |
| 828 sc2->insert(_arguments); | |
| 829 _arguments->parent = this; | |
| 830 #else | |
| 831 t = Type::typeinfo->type->arrayOf(); | |
| 832 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
| 833 v_arguments->storage_class = STCparameter | STCin; | |
| 834 v_arguments->semantic(sc2); | |
| 835 sc2->insert(v_arguments); | |
| 836 v_arguments->parent = this; | |
| 837 #endif | |
| 838 } | |
| 839 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
| 840 { // Declare _argptr | |
| 841 #if IN_GCC | |
| 842 t = d_gcc_builtin_va_list_d_type; | |
| 843 #else | |
| 844 t = Type::tvoid->pointerTo(); | |
| 845 #endif | |
| 846 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
| 847 argptr->semantic(sc2); | |
| 848 sc2->insert(argptr); | |
| 849 argptr->parent = this; | |
| 850 } | |
| 851 #endif | |
| 852 } | |
| 853 | |
| 854 #if IN_LLVM | |
| 855 // LDC make sure argument type is semanticed. | |
| 856 // Turns TypeTuple!(int, int) into two int parameters, for instance. | |
| 857 if (f->parameters) | |
| 858 { | |
|
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859 for (size_t i = 0; i < Parameter::dim(f->parameters); i++) |
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|
860 { Parameter *arg = (Parameter *)Parameter::getNth(f->parameters, i); |
| 1587 | 861 Type* nw = arg->type->semantic(0, sc); |
| 862 if (arg->type != nw) { | |
| 863 arg->type = nw; | |
| 864 // Examine this index again. | |
| 865 // This is important if it turned into a tuple. | |
| 866 // In particular, the empty tuple should be handled or the | |
| 867 // next parameter will be skipped. | |
| 868 // FIXME: Maybe we only need to do this for tuples, | |
| 869 // and can add tuple.length after decrement? | |
| 870 i--; | |
| 871 } | |
| 872 } | |
| 873 } | |
| 874 #endif | |
| 875 | |
|
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Merge DMD r301: a little refactor and harmonize
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|
876 #if 0 |
| 1587 | 877 // Propagate storage class from tuple parameters to their element-parameters. |
| 878 if (f->parameters) | |
| 879 { | |
| 880 for (size_t i = 0; i < f->parameters->dim; i++) | |
|
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|
881 { Parameter *arg = (Parameter *)f->parameters->data[i]; |
| 1587 | 882 |
| 883 //printf("[%d] arg->type->ty = %d %s\n", i, arg->type->ty, arg->type->toChars()); | |
| 884 if (arg->type->ty == Ttuple) | |
| 885 { TypeTuple *t = (TypeTuple *)arg->type; | |
|
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|
886 size_t dim = Parameter::dim(t->arguments); |
| 1587 | 887 for (size_t j = 0; j < dim; j++) |
|
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|
888 { Parameter *narg = Parameter::getNth(t->arguments, j); |
| 1587 | 889 narg->storageClass = arg->storageClass; |
| 890 } | |
| 891 } | |
| 892 } | |
| 893 } | |
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Leandro Lucarella <llucax@gmail.com>
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diff
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|
894 #endif |
| 1587 | 895 |
| 896 /* Declare all the function parameters as variables | |
| 897 * and install them in parameters[] | |
| 898 */ | |
|
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|
899 size_t nparams = Parameter::dim(f->parameters); |
| 1587 | 900 if (nparams) |
| 901 { /* parameters[] has all the tuples removed, as the back end | |
| 902 * doesn't know about tuples | |
| 903 */ | |
| 904 parameters = new Dsymbols(); | |
| 905 parameters->reserve(nparams); | |
| 906 for (size_t i = 0; i < nparams; i++) | |
| 907 { | |
|
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changeset
|
908 Parameter *arg = Parameter::getNth(f->parameters, i); |
| 1587 | 909 Identifier *id = arg->ident; |
| 910 if (!id) | |
| 911 { | |
| 912 /* Generate identifier for un-named parameter, | |
| 913 * because we need it later on. | |
| 914 */ | |
| 915 arg->ident = id = Identifier::generateId("_param_", i); | |
| 916 } | |
| 917 Type *vtype = arg->type; | |
| 918 VarDeclaration *v = new VarDeclaration(loc, vtype, id, NULL); | |
| 919 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
| 920 v->storage_class |= STCparameter; | |
| 921 if (f->varargs == 2 && i + 1 == nparams) | |
| 922 v->storage_class |= STCvariadic; | |
| 923 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
| 924 if (v->storage_class & STClazy) | |
| 925 v->storage_class |= STCin; | |
| 926 v->semantic(sc2); | |
| 927 if (!sc2->insert(v)) | |
| 928 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 929 else | |
| 930 parameters->push(v); | |
| 931 localsymtab->insert(v); | |
| 932 v->parent = this; | |
| 933 } | |
| 934 } | |
| 935 | |
| 936 // Declare the tuple symbols and put them in the symbol table, | |
| 937 // but not in parameters[]. | |
| 938 if (f->parameters) | |
| 939 { | |
| 940 for (size_t i = 0; i < f->parameters->dim; i++) | |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
941 { Parameter *arg = (Parameter *)f->parameters->data[i]; |
| 1587 | 942 |
| 943 if (!arg->ident) | |
| 944 continue; // never used, so ignore | |
| 945 if (arg->type->ty == Ttuple) | |
| 946 { TypeTuple *t = (TypeTuple *)arg->type; | |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
947 size_t dim = Parameter::dim(t->arguments); |
| 1587 | 948 Objects *exps = new Objects(); |
| 949 exps->setDim(dim); | |
| 950 for (size_t j = 0; j < dim; j++) | |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
951 { Parameter *narg = Parameter::getNth(t->arguments, j); |
| 1587 | 952 assert(narg->ident); |
| 953 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
| 954 assert(v); | |
| 955 Expression *e = new VarExp(v->loc, v); | |
| 956 exps->data[j] = (void *)e; | |
| 957 } | |
| 958 assert(arg->ident); | |
| 959 TupleDeclaration *v = new TupleDeclaration(loc, arg->ident, exps); | |
| 960 //printf("declaring tuple %s\n", v->toChars()); | |
| 961 v->isexp = 1; | |
| 962 if (!sc2->insert(v)) | |
| 963 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
| 964 localsymtab->insert(v); | |
| 965 v->parent = this; | |
| 966 } | |
| 967 } | |
| 968 } | |
| 969 | |
| 970 /* Do the semantic analysis on the [in] preconditions and | |
| 971 * [out] postconditions. | |
| 972 */ | |
| 973 sc2->incontract++; | |
| 974 | |
| 975 if (frequire) | |
| 976 { /* frequire is composed of the [in] contracts | |
| 977 */ | |
| 978 // BUG: need to error if accessing out parameters | |
| 979 // BUG: need to treat parameters as const | |
| 980 // BUG: need to disallow returns and throws | |
| 981 // BUG: verify that all in and ref parameters are read | |
| 982 frequire = frequire->semantic(sc2); | |
| 983 labtab = NULL; // so body can't refer to labels | |
| 984 } | |
| 985 | |
| 986 if (fensure || addPostInvariant()) | |
| 987 { /* fensure is composed of the [out] contracts | |
| 988 */ | |
| 989 if (!type->nextOf()) | |
| 990 { // Have to do semantic() on fbody first | |
| 991 error("post conditions are not supported if the return type is inferred"); | |
| 992 return; | |
| 993 } | |
| 994 | |
| 995 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 996 sym->parent = sc2->scopesym; | |
| 997 sc2 = sc2->push(sym); | |
| 998 | |
| 999 assert(type->nextOf()); | |
| 1000 if (type->nextOf()->ty == Tvoid) | |
| 1001 { | |
| 1002 if (outId) | |
| 1003 error("void functions have no result"); | |
| 1004 } | |
| 1005 else | |
| 1006 { | |
| 1007 if (!outId) | |
| 1008 outId = Id::result; // provide a default | |
| 1009 } | |
| 1010 | |
| 1011 if (outId) | |
| 1012 { // Declare result variable | |
| 1013 VarDeclaration *v; | |
| 1014 Loc loc = this->loc; | |
| 1015 | |
| 1016 if (fensure) | |
| 1017 loc = fensure->loc; | |
| 1018 | |
| 1019 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
| 1020 v->noscope = 1; | |
| 1021 #if DMDV2 | |
|
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Merge DMD r262: bugzilla 3381 ([tdpl] Incorrect assessment of ...)
Leandro Lucarella <llucax@gmail.com>
parents:
1607
diff
changeset
|
1022 if (!isVirtual()) |
|
679d101395e8
Merge DMD r262: bugzilla 3381 ([tdpl] Incorrect assessment of ...)
Leandro Lucarella <llucax@gmail.com>
parents:
1607
diff
changeset
|
1023 v->storage_class |= STCconst; |
| 1587 | 1024 if (f->isref) |
| 1025 { | |
| 1026 v->storage_class |= STCref | STCforeach; | |
| 1027 } | |
| 1028 #endif | |
| 1029 sc2->incontract--; | |
| 1030 v->semantic(sc2); | |
| 1031 sc2->incontract++; | |
| 1032 if (!sc2->insert(v)) | |
| 1033 error("out result %s is already defined", v->toChars()); | |
| 1034 v->parent = this; | |
| 1035 vresult = v; | |
| 1036 | |
| 1037 // vresult gets initialized with the function return value | |
| 1038 // in ReturnStatement::semantic() | |
| 1039 } | |
| 1040 | |
| 1041 // BUG: need to treat parameters as const | |
| 1042 // BUG: need to disallow returns and throws | |
| 1043 if (fensure) | |
| 1044 { fensure = fensure->semantic(sc2); | |
| 1045 labtab = NULL; // so body can't refer to labels | |
| 1046 } | |
| 1047 | |
| 1048 if (!global.params.useOut) | |
| 1049 { fensure = NULL; // discard | |
| 1050 vresult = NULL; | |
| 1051 } | |
| 1052 | |
| 1053 // Postcondition invariant | |
| 1054 if (addPostInvariant()) | |
| 1055 { | |
| 1056 Expression *e = NULL; | |
| 1057 if (isCtorDeclaration()) | |
| 1058 { | |
| 1059 // Call invariant directly only if it exists | |
| 1060 InvariantDeclaration *inv = ad->inv; | |
| 1061 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1062 | |
| 1063 while (!inv && cd) | |
| 1064 { | |
| 1065 cd = cd->baseClass; | |
| 1066 if (!cd) | |
| 1067 break; | |
| 1068 inv = cd->inv; | |
| 1069 } | |
| 1070 if (inv) | |
| 1071 { | |
| 1072 e = new DsymbolExp(0, inv); | |
| 1073 e = new CallExp(0, e); | |
| 1074 e = e->semantic(sc2); | |
| 1075 } | |
| 1076 } | |
| 1077 else | |
| 1078 { // Call invariant virtually | |
| 1079 Expression *v = new ThisExp(0); | |
| 1080 v->type = vthis->type; | |
| 1081 #if STRUCTTHISREF | |
| 1082 if (ad->isStructDeclaration()) | |
| 1083 v = v->addressOf(sc); | |
| 1084 #endif | |
| 1085 e = new AssertExp(0, v); | |
| 1086 } | |
| 1087 if (e) | |
| 1088 { | |
| 1089 ExpStatement *s = new ExpStatement(0, e); | |
| 1090 if (fensure) | |
| 1091 fensure = new CompoundStatement(0, s, fensure); | |
| 1092 else | |
| 1093 fensure = s; | |
| 1094 } | |
| 1095 } | |
| 1096 | |
| 1097 if (fensure) | |
| 1098 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
| 1099 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
| 1100 ls->isReturnLabel = 1; | |
| 1101 returnLabel->statement = ls; | |
| 1102 } | |
| 1103 sc2 = sc2->pop(); | |
| 1104 } | |
| 1105 | |
| 1106 sc2->incontract--; | |
| 1107 | |
| 1108 if (fbody) | |
| 1109 { ClassDeclaration *cd = isClassMember(); | |
| 1110 | |
| 1111 /* If this is a class constructor | |
| 1112 */ | |
| 1113 if (isCtorDeclaration() && cd) | |
| 1114 { | |
| 1115 for (int i = 0; i < cd->fields.dim; i++) | |
| 1116 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 1117 | |
| 1118 v->ctorinit = 0; | |
| 1119 } | |
| 1120 } | |
| 1121 | |
| 1122 if (inferRetType || f->retStyle() != RETstack) | |
| 1123 nrvo_can = 0; | |
| 1124 | |
| 1125 fbody = fbody->semantic(sc2); | |
| 1126 | |
| 1127 if (inferRetType) | |
| 1128 { // If no return type inferred yet, then infer a void | |
| 1129 if (!type->nextOf()) | |
| 1130 { | |
| 1131 ((TypeFunction *)type)->next = Type::tvoid; | |
| 1132 type = type->semantic(loc, sc); | |
| 1133 } | |
| 1134 f = (TypeFunction *)type; | |
| 1135 } | |
| 1136 | |
| 1137 int offend = fbody ? fbody->blockExit() & BEfallthru : TRUE; | |
| 1138 | |
| 1139 if (isStaticCtorDeclaration()) | |
| 1140 { /* It's a static constructor. Ensure that all | |
| 1141 * ctor consts were initialized. | |
| 1142 */ | |
| 1143 | |
| 1144 Dsymbol *p = toParent(); | |
| 1145 ScopeDsymbol *ad = p->isScopeDsymbol(); | |
| 1146 if (!ad) | |
| 1147 { | |
| 1148 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); | |
| 1149 } | |
| 1150 else | |
| 1151 { | |
| 1152 for (int i = 0; i < ad->members->dim; i++) | |
| 1153 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; | |
| 1154 | |
| 1155 s->checkCtorConstInit(); | |
| 1156 } | |
| 1157 } | |
| 1158 } | |
| 1159 | |
| 1160 if (isCtorDeclaration() && cd) | |
| 1161 { | |
| 1162 //printf("callSuper = x%x\n", sc2->callSuper); | |
| 1163 | |
| 1164 // Verify that all the ctorinit fields got initialized | |
| 1165 if (!(sc2->callSuper & CSXthis_ctor)) | |
| 1166 { | |
| 1167 for (int i = 0; i < cd->fields.dim; i++) | |
| 1168 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
| 1169 | |
| 1170 if (v->ctorinit == 0 && v->isCtorinit()) | |
| 1171 error("missing initializer for const field %s", v->toChars()); | |
| 1172 } | |
| 1173 } | |
| 1174 | |
| 1175 if (!(sc2->callSuper & CSXany_ctor) && | |
| 1176 cd->baseClass && cd->baseClass->ctor) | |
| 1177 { | |
| 1178 sc2->callSuper = 0; | |
| 1179 | |
| 1180 // Insert implicit super() at start of fbody | |
| 1181 Expression *e1 = new SuperExp(0); | |
| 1182 Expression *e = new CallExp(0, e1); | |
| 1183 | |
| 1184 unsigned errors = global.errors; | |
| 1185 global.gag++; | |
| 1186 e = e->semantic(sc2); | |
| 1187 global.gag--; | |
| 1188 if (errors != global.errors) | |
| 1189 error("no match for implicit super() call in constructor"); | |
| 1190 | |
| 1191 Statement *s = new ExpStatement(0, e); | |
| 1192 fbody = new CompoundStatement(0, s, fbody); | |
| 1193 } | |
| 1194 } | |
| 1195 else if (fes) | |
| 1196 { // For foreach(){} body, append a return 0; | |
| 1197 Expression *e = new IntegerExp(0); | |
| 1198 Statement *s = new ReturnStatement(0, e); | |
| 1199 fbody = new CompoundStatement(0, fbody, s); | |
| 1200 assert(!returnLabel); | |
| 1201 } | |
| 1202 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
| 1203 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
| 1204 else if (!inlineAsm) | |
| 1205 { | |
| 1206 #if DMDV2 | |
| 1207 int blockexit = fbody ? fbody->blockExit() : BEfallthru; | |
| 1208 if (f->isnothrow && blockexit & BEthrow) | |
| 1209 error("'%s' is nothrow yet may throw", toChars()); | |
| 1210 | |
| 1211 int offend = blockexit & BEfallthru; | |
| 1212 #endif | |
| 1213 if (type->nextOf()->ty == Tvoid) | |
| 1214 { | |
| 1215 if (offend && isMain()) | |
| 1216 { // Add a return 0; statement | |
| 1217 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
| 1218 fbody = new CompoundStatement(0, fbody, s); | |
| 1219 } | |
| 1220 } | |
| 1221 else | |
| 1222 { | |
| 1223 if (offend) | |
| 1224 { Expression *e; | |
| 1225 #if DMDV1 | |
| 1226 warning(loc, "no return exp; or assert(0); at end of function"); | |
| 1227 #else | |
| 1228 error("no return exp; or assert(0); at end of function"); | |
| 1229 #endif | |
| 1230 if (global.params.useAssert && | |
| 1231 !global.params.useInline) | |
| 1232 { /* Add an assert(0, msg); where the missing return | |
| 1233 * should be. | |
| 1234 */ | |
| 1235 e = new AssertExp( | |
| 1236 endloc, | |
| 1237 new IntegerExp(0), | |
| 1238 new StringExp(loc, (char *)"missing return expression") | |
| 1239 ); | |
| 1240 } | |
| 1241 else | |
| 1242 e = new HaltExp(endloc); | |
| 1243 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
| 1244 e = e->semantic(sc2); | |
| 1245 Statement *s = new ExpStatement(0, e); | |
| 1246 fbody = new CompoundStatement(0, fbody, s); | |
| 1247 } | |
| 1248 } | |
| 1249 } | |
| 1250 } | |
| 1251 | |
| 1252 { | |
| 1253 Statements *a = new Statements(); | |
| 1254 | |
| 1255 // Merge in initialization of 'out' parameters | |
| 1256 if (parameters) | |
| 1257 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1258 { | |
| 1259 VarDeclaration *v = (VarDeclaration *)parameters->data[i]; | |
| 1260 if (v->storage_class & STCout) | |
| 1261 { | |
| 1262 assert(v->init); | |
| 1263 ExpInitializer *ie = v->init->isExpInitializer(); | |
| 1264 assert(ie); | |
| 1265 a->push(new ExpStatement(0, ie->exp)); | |
| 1266 } | |
| 1267 } | |
| 1268 } | |
| 1269 | |
| 1270 // we'll handle variadics ourselves | |
| 1271 #if !IN_LLVM | |
| 1272 if (argptr) | |
| 1273 { // Initialize _argptr to point past non-variadic arg | |
| 1274 #if IN_GCC | |
| 1275 // Handled in FuncDeclaration::toObjFile | |
| 1276 v_argptr = argptr; | |
| 1277 v_argptr->init = new VoidInitializer(loc); | |
| 1278 #else | |
| 1279 Type *t = argptr->type; | |
| 1280 VarDeclaration *p; | |
| 1281 unsigned offset; | |
| 1282 | |
|
1602
a413ae7329bf
Merge DMD r243: some harmonization with D2 dmd
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1283 Expression *e1 = new VarExp(0, argptr); |
| 1587 | 1284 if (parameters && parameters->dim) |
| 1285 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
| 1286 else | |
| 1287 p = v_arguments; // last parameter is _arguments[] | |
| 1288 if (p->storage_class & STClazy) | |
| 1289 // If the last parameter is lazy, it's the size of a delegate | |
| 1290 offset = PTRSIZE * 2; | |
| 1291 else | |
| 1292 offset = p->type->size(); | |
| 1293 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
|
1602
a413ae7329bf
Merge DMD r243: some harmonization with D2 dmd
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1294 Expression *e = new SymOffExp(0, p, offset); |
| 1587 | 1295 e = new AssignExp(0, e1, e); |
| 1296 e->type = t; | |
| 1297 a->push(new ExpStatement(0, e)); | |
| 1298 #endif // IN_GCC | |
| 1299 } | |
| 1300 | |
| 1301 if (_arguments) | |
| 1302 { | |
| 1303 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1304 * _arguments = v_arguments.elements; | |
| 1305 */ | |
| 1306 Expression *e = new VarExp(0, v_arguments); | |
| 1307 e = new DotIdExp(0, e, Id::elements); | |
| 1308 Expression *e1 = new VarExp(0, _arguments); | |
| 1309 e = new AssignExp(0, e1, e); | |
| 1310 e->op = TOKconstruct; | |
| 1311 e = e->semantic(sc2); | |
| 1312 a->push(new ExpStatement(0, e)); | |
| 1313 } | |
| 1314 | |
| 1315 #endif // !IN_LLVM | |
| 1316 | |
| 1317 // Merge contracts together with body into one compound statement | |
| 1318 | |
| 1319 #ifdef _DH | |
| 1320 if (frequire && global.params.useIn) | |
| 1321 { frequire->incontract = 1; | |
| 1322 a->push(frequire); | |
| 1323 } | |
| 1324 #else | |
| 1325 if (frequire && global.params.useIn) | |
| 1326 a->push(frequire); | |
| 1327 #endif | |
| 1328 | |
| 1329 // Precondition invariant | |
| 1330 if (addPreInvariant()) | |
| 1331 { | |
| 1332 Expression *e = NULL; | |
| 1333 Expression *ee = NULL; | |
| 1334 if (isDtorDeclaration()) | |
| 1335 { | |
| 1336 // Call invariant directly only if it exists | |
| 1337 InvariantDeclaration *inv = ad->inv; | |
| 1338 ClassDeclaration *cd = ad->isClassDeclaration(); | |
| 1339 | |
| 1340 while (!inv && cd) | |
| 1341 { | |
| 1342 cd = cd->baseClass; | |
| 1343 if (!cd) | |
| 1344 break; | |
| 1345 inv = cd->inv; | |
| 1346 } | |
| 1347 if (inv) | |
| 1348 { | |
| 1349 e = new DsymbolExp(0, inv); | |
| 1350 e = new CallExp(0, e); | |
| 1351 e = e->semantic(sc2); | |
| 1352 } | |
| 1353 } | |
| 1354 else | |
| 1355 { // Call invariant virtually | |
| 1356 // LDC: unless this is a struct without invariant | |
| 1357 StructDeclaration* sd = ad->isStructDeclaration(); | |
| 1358 if (!sd || sd->inv) | |
| 1359 { | |
| 1360 ThisExp *v = new ThisExp(0); | |
| 1361 v->type = vthis->type; | |
| 1362 e = new AssertExp(loc, v, NULL); | |
| 1363 } | |
| 1364 | |
| 1365 // LDC: check for null this | |
| 1366 ThisExp* v = new ThisExp(0); | |
| 1367 v->type = vthis->type; | |
| 1368 #if STRUCTTHISREF | |
| 1369 if (ad->isStructDeclaration()) | |
| 1370 v = v->addressOf(sc); | |
| 1371 #endif | |
| 1372 v->var = vthis; | |
| 1373 | |
| 1374 NullExp *nv = new NullExp(0); | |
| 1375 nv->type = v->type; | |
| 1376 | |
| 1377 IdentityExp *ie = new IdentityExp(TOKnotidentity, 0, v, nv); | |
| 1378 ie->type = Type::tbool; | |
| 1379 | |
| 1380 Expression *se = new StringExp(0, (char *)"null this"); | |
| 1381 se = se->semantic(sc); | |
| 1382 se->type = Type::tchar->arrayOf(); | |
| 1383 | |
| 1384 ee = new AssertExp(loc, ie, se); | |
| 1385 } | |
| 1386 if (ee) | |
| 1387 { | |
| 1388 ExpStatement *s = new ExpStatement(0, ee); | |
| 1389 a->push(s); | |
| 1390 } | |
| 1391 if (e) | |
| 1392 { | |
| 1393 ExpStatement *s = new ExpStatement(0, e); | |
| 1394 a->push(s); | |
| 1395 } | |
| 1396 } | |
| 1397 | |
| 1398 if (fbody) | |
| 1399 a->push(fbody); | |
| 1400 | |
| 1401 if (fensure) | |
| 1402 { | |
| 1403 a->push(returnLabel->statement); | |
| 1404 | |
| 1405 if (type->nextOf()->ty != Tvoid) | |
| 1406 { | |
| 1407 // Create: return vresult; | |
| 1408 assert(vresult); | |
| 1409 Expression *e = new VarExp(0, vresult); | |
| 1410 if (tintro) | |
| 1411 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
| 1412 e = e->semantic(sc); | |
| 1413 } | |
| 1414 ReturnStatement *s = new ReturnStatement(0, e); | |
| 1415 a->push(s); | |
| 1416 } | |
| 1417 } | |
| 1418 | |
| 1419 fbody = new CompoundStatement(0, a); | |
| 1420 #if DMDV2 | |
| 1421 /* Append destructor calls for parameters as finally blocks. | |
| 1422 */ | |
| 1423 if (parameters) | |
| 1424 { for (size_t i = 0; i < parameters->dim; i++) | |
| 1425 { | |
| 1426 VarDeclaration *v = (VarDeclaration *)parameters->data[i]; | |
| 1427 | |
| 1428 if (v->storage_class & (STCref | STCout)) | |
| 1429 continue; | |
| 1430 | |
| 1431 /* Don't do this for static arrays, since static | |
| 1432 * arrays are called by reference. Remove this | |
| 1433 * when we change them to call by value. | |
| 1434 */ | |
| 1435 if (v->type->toBasetype()->ty == Tsarray) | |
| 1436 continue; | |
| 1437 | |
| 1438 Expression *e = v->callAutoDtor(sc); | |
| 1439 if (e) | |
| 1440 { Statement *s = new ExpStatement(0, e); | |
| 1441 s = s->semantic(sc); | |
| 1442 if (fbody->blockExit() == BEfallthru) | |
| 1443 fbody = new CompoundStatement(0, fbody, s); | |
| 1444 else | |
| 1445 fbody = new TryFinallyStatement(0, fbody, s); | |
| 1446 } | |
| 1447 } | |
| 1448 } | |
| 1449 #endif | |
| 1450 | |
| 1451 // wrap body of synchronized functions in a synchronized statement | |
| 1452 if (isSynchronized()) | |
| 1453 { | |
| 1454 ClassDeclaration *cd = parent->isClassDeclaration(); | |
| 1455 if (!cd) | |
| 1456 error("synchronized function %s must be a member of a class", toChars()); | |
| 1457 | |
| 1458 Expression *sync; | |
| 1459 if (isStatic()) | |
| 1460 { | |
| 1461 // static member functions synchronize on classinfo | |
| 1462 sync = cd->type->dotExp(sc2, new TypeExp(loc, cd->type), Id::classinfo); | |
| 1463 } | |
| 1464 else | |
| 1465 { | |
| 1466 // non-static member functions synchronize on this | |
| 1467 sync = new VarExp(loc, vthis); | |
| 1468 } | |
| 1469 | |
| 1470 // we do not want to rerun semantics on the whole function, so we | |
| 1471 // manually adjust all labels in the function that currently don't | |
| 1472 // have an enclosingScopeExit to use the new SynchronizedStatement | |
| 1473 SynchronizedStatement* s = new SynchronizedStatement(loc, sync, NULL); | |
| 1474 s->semantic(sc2); | |
| 1475 s->body = fbody; | |
| 1476 | |
| 1477 // LDC | |
| 1478 LabelMap::iterator it, end = labmap.end(); | |
| 1479 for (it = labmap.begin(); it != end; ++it) | |
| 1480 if (it->second->enclosingScopeExit == NULL) | |
| 1481 it->second->enclosingScopeExit = s; | |
| 1482 | |
| 1483 a = new Statements; | |
| 1484 a->push(s); | |
| 1485 fbody = new CompoundStatement(0, a); | |
| 1486 } | |
| 1487 } | |
| 1488 | |
| 1489 sc2->callSuper = 0; | |
| 1490 sc2->pop(); | |
| 1491 } | |
|
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1492 semanticRun = PASSsemantic3done; |
| 1587 | 1493 } |
| 1494 | |
| 1495 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1496 { | |
| 1497 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
| 1498 | |
| 1499 type->toCBuffer(buf, ident, hgs); | |
| 1500 bodyToCBuffer(buf, hgs); | |
| 1501 } | |
| 1502 | |
| 1503 | |
| 1504 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1505 { | |
| 1506 if (fbody && | |
| 1507 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
| 1508 ) | |
| 1509 { buf->writenl(); | |
| 1510 | |
| 1511 // in{} | |
| 1512 if (frequire) | |
| 1513 { buf->writestring("in"); | |
| 1514 buf->writenl(); | |
| 1515 frequire->toCBuffer(buf, hgs); | |
| 1516 } | |
| 1517 | |
| 1518 // out{} | |
| 1519 if (fensure) | |
| 1520 { buf->writestring("out"); | |
| 1521 if (outId) | |
| 1522 { buf->writebyte('('); | |
| 1523 buf->writestring(outId->toChars()); | |
| 1524 buf->writebyte(')'); | |
| 1525 } | |
| 1526 buf->writenl(); | |
| 1527 fensure->toCBuffer(buf, hgs); | |
| 1528 } | |
| 1529 | |
| 1530 if (frequire || fensure) | |
| 1531 { buf->writestring("body"); | |
| 1532 buf->writenl(); | |
| 1533 } | |
| 1534 | |
| 1535 buf->writebyte('{'); | |
| 1536 buf->writenl(); | |
| 1537 fbody->toCBuffer(buf, hgs); | |
| 1538 buf->writebyte('}'); | |
| 1539 buf->writenl(); | |
| 1540 } | |
| 1541 else | |
| 1542 { buf->writeByte(';'); | |
| 1543 buf->writenl(); | |
| 1544 } | |
| 1545 } | |
| 1546 | |
| 1547 /**************************************************** | |
| 1548 * Merge into this function the 'in' contracts of all it overrides. | |
| 1549 * 'in's are OR'd together, i.e. only one of them needs to pass. | |
| 1550 */ | |
| 1551 | |
| 1552 Statement *FuncDeclaration::mergeFrequire(Statement *sf) | |
| 1553 { | |
| 1554 /* Implementing this is done by having the overriding function call | |
| 1555 * nested functions (the fdrequire functions) nested inside the overridden | |
| 1556 * function. This requires that the stack layout of the calling function's | |
| 1557 * parameters and 'this' pointer be in the same place (as the nested | |
| 1558 * function refers to them). | |
| 1559 * This is easy for the parameters, as they are all on the stack in the same | |
| 1560 * place by definition, since it's an overriding function. The problem is | |
| 1561 * getting the 'this' pointer in the same place, since it is a local variable. | |
| 1562 * We did some hacks in the code generator to make this happen: | |
| 1563 * 1. always generate exception handler frame, or at least leave space for it | |
| 1564 * in the frame (Windows 32 SEH only) | |
| 1565 * 2. always generate an EBP style frame | |
| 1566 * 3. since 'this' is passed in a register that is subsequently copied into | |
| 1567 * a stack local, allocate that local immediately following the exception | |
| 1568 * handler block, so it is always at the same offset from EBP. | |
| 1569 */ | |
| 1570 for (int i = 0; i < foverrides.dim; i++) | |
| 1571 { | |
| 1572 FuncDeclaration *fdv = (FuncDeclaration *)foverrides.data[i]; | |
| 1573 sf = fdv->mergeFrequire(sf); | |
| 1574 if (fdv->fdrequire) | |
| 1575 { | |
| 1576 //printf("fdv->frequire: %s\n", fdv->frequire->toChars()); | |
| 1577 /* Make the call: | |
| 1578 * try { __require(); } | |
| 1579 * catch { frequire; } | |
| 1580 */ | |
| 1581 Expression *eresult = NULL; | |
| 1582 Expression *e = new CallExp(loc, new VarExp(loc, fdv->fdrequire), eresult); | |
| 1583 Statement *s2 = new ExpStatement(loc, e); | |
| 1584 | |
| 1585 if (sf) | |
| 1586 { Catch *c = new Catch(loc, NULL, NULL, sf); | |
| 1587 Array *catches = new Array(); | |
| 1588 catches->push(c); | |
| 1589 sf = new TryCatchStatement(loc, s2, catches); | |
| 1590 } | |
| 1591 else | |
| 1592 sf = s2; | |
| 1593 } | |
| 1594 } | |
| 1595 return sf; | |
| 1596 } | |
| 1597 | |
| 1598 /**************************************************** | |
| 1599 * Merge into this function the 'out' contracts of all it overrides. | |
| 1600 * 'out's are AND'd together, i.e. all of them need to pass. | |
| 1601 */ | |
| 1602 | |
| 1603 Statement *FuncDeclaration::mergeFensure(Statement *sf) | |
| 1604 { | |
| 1605 /* Same comments as for mergeFrequire(), except that we take care | |
| 1606 * of generating a consistent reference to the 'result' local by | |
| 1607 * explicitly passing 'result' to the nested function as a reference | |
| 1608 * argument. | |
| 1609 * This won't work for the 'this' parameter as it would require changing | |
| 1610 * the semantic code for the nested function so that it looks on the parameter | |
| 1611 * list for the 'this' pointer, something that would need an unknown amount | |
| 1612 * of tweaking of various parts of the compiler that I'd rather leave alone. | |
| 1613 */ | |
| 1614 for (int i = 0; i < foverrides.dim; i++) | |
| 1615 { | |
| 1616 FuncDeclaration *fdv = (FuncDeclaration *)foverrides.data[i]; | |
| 1617 sf = fdv->mergeFensure(sf); | |
| 1618 if (fdv->fdensure) | |
| 1619 { | |
| 1620 //printf("fdv->fensure: %s\n", fdv->fensure->toChars()); | |
| 1621 // Make the call: __ensure(result) | |
| 1622 Expression *eresult = NULL; | |
| 1623 if (outId) | |
| 1624 eresult = new IdentifierExp(loc, outId); | |
| 1625 Expression *e = new CallExp(loc, new VarExp(loc, fdv->fdensure), eresult); | |
| 1626 Statement *s2 = new ExpStatement(loc, e); | |
| 1627 | |
| 1628 if (sf) | |
| 1629 { | |
| 1630 sf = new CompoundStatement(fensure->loc, s2, sf); | |
| 1631 } | |
| 1632 else | |
| 1633 sf = s2; | |
| 1634 } | |
| 1635 } | |
| 1636 return sf; | |
| 1637 } | |
| 1638 | |
| 1639 /**************************************************** | |
| 1640 * Determine if 'this' overrides fd. | |
| 1641 * Return !=0 if it does. | |
| 1642 */ | |
| 1643 | |
| 1644 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
| 1645 { int result = 0; | |
| 1646 | |
| 1647 if (fd->ident == ident) | |
| 1648 { | |
| 1649 int cov = type->covariant(fd->type); | |
| 1650 if (cov) | |
| 1651 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
| 1652 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
| 1653 | |
| 1654 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
| 1655 result = 1; | |
| 1656 } | |
| 1657 } | |
| 1658 return result; | |
| 1659 } | |
| 1660 | |
| 1661 /************************************************* | |
| 1662 * Find index of function in vtbl[0..dim] that | |
| 1663 * this function overrides. | |
|
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1664 * Prefer an exact match to a covariant one. |
| 1587 | 1665 * Returns: |
| 1666 * -1 didn't find one | |
| 1667 * -2 can't determine because of forward references | |
| 1668 */ | |
| 1669 | |
| 1670 int FuncDeclaration::findVtblIndex(Array *vtbl, int dim) | |
| 1671 { | |
|
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1672 FuncDeclaration *mismatch = NULL; |
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1673 int bestvi = -1; |
| 1587 | 1674 for (int vi = 0; vi < dim; vi++) |
| 1675 { | |
| 1676 FuncDeclaration *fdv = ((Dsymbol *)vtbl->data[vi])->isFuncDeclaration(); | |
| 1677 if (fdv && fdv->ident == ident) | |
| 1678 { | |
|
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1679 if (type->equals(fdv->type)) // if exact match |
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1680 return vi; // no need to look further |
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1681 |
| 1587 | 1682 int cov = type->covariant(fdv->type); |
| 1683 //printf("\tbaseclass cov = %d\n", cov); | |
| 1684 switch (cov) | |
| 1685 { | |
| 1686 case 0: // types are distinct | |
| 1687 break; | |
| 1688 | |
| 1689 case 1: | |
|
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1690 bestvi = vi; // covariant, but not identical |
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1691 break; // keep looking for an exact match |
| 1587 | 1692 |
| 1693 case 2: | |
|
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1694 mismatch = fdv; // overrides, but is not covariant |
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1695 break; // keep looking for an exact match |
| 1587 | 1696 |
| 1697 case 3: | |
| 1698 return -2; // forward references | |
| 1699 | |
| 1700 default: | |
| 1701 assert(0); | |
| 1702 } | |
| 1703 } | |
| 1704 } | |
|
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1705 if (bestvi == -1 && mismatch) |
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1706 { |
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1707 //type->print(); |
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1708 //mismatch->type->print(); |
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1709 //printf("%s %s\n", type->deco, mismatch->type->deco); |
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1710 error("of type %s overrides but is not covariant with %s of type %s", |
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1711 type->toChars(), mismatch->toPrettyChars(), mismatch->type->toChars()); |
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1712 } |
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1713 return bestvi; |
| 1587 | 1714 } |
| 1715 | |
| 1716 /**************************************************** | |
| 1717 * Overload this FuncDeclaration with the new one f. | |
| 1718 * Return !=0 if successful; i.e. no conflict. | |
| 1719 */ | |
| 1720 | |
| 1721 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
| 1722 { | |
| 1723 FuncDeclaration *f; | |
| 1724 AliasDeclaration *a; | |
| 1725 | |
| 1726 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
| 1727 a = s->isAliasDeclaration(); | |
| 1728 if (a) | |
| 1729 { | |
| 1730 if (overnext) | |
| 1731 return overnext->overloadInsert(a); | |
| 1732 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
| 1733 { | |
| 1734 //printf("\ta = '%s'\n", a->type->toChars()); | |
| 1735 return FALSE; | |
| 1736 } | |
| 1737 overnext = a; | |
| 1738 //printf("\ttrue: no conflict\n"); | |
| 1739 return TRUE; | |
| 1740 } | |
| 1741 f = s->isFuncDeclaration(); | |
| 1742 if (!f) | |
| 1743 return FALSE; | |
| 1744 | |
| 1745 if (type && f->type && // can be NULL for overloaded constructors | |
| 1746 f->type->covariant(type) && | |
| 1747 !isFuncAliasDeclaration()) | |
| 1748 { | |
| 1749 //printf("\tfalse: conflict %s\n", kind()); | |
| 1750 return FALSE; | |
| 1751 } | |
| 1752 | |
| 1753 if (overnext) | |
| 1754 return overnext->overloadInsert(f); | |
| 1755 overnext = f; | |
| 1756 //printf("\ttrue: no conflict\n"); | |
| 1757 return TRUE; | |
| 1758 } | |
| 1759 | |
| 1760 /******************************************** | |
| 1761 * Find function in overload list that exactly matches t. | |
| 1762 */ | |
| 1763 | |
| 1764 /*************************************************** | |
| 1765 * Visit each overloaded function in turn, and call | |
| 1766 * (*fp)(param, f) on it. | |
| 1767 * Exit when no more, or (*fp)(param, f) returns 1. | |
| 1768 * Returns: | |
| 1769 * 0 continue | |
| 1770 * 1 done | |
| 1771 */ | |
| 1772 | |
| 1773 int overloadApply(Module* from, FuncDeclaration *fstart, | |
| 1774 int (*fp)(void *, FuncDeclaration *), | |
| 1775 void *param) | |
| 1776 { | |
| 1777 FuncDeclaration *f; | |
| 1778 Declaration *d; | |
| 1779 Declaration *next; | |
| 1780 | |
| 1781 for (d = fstart; d; d = next) | |
| 1782 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
| 1783 | |
| 1784 if (fa) | |
| 1785 { | |
| 1786 if (fa->getModule() == from || fa->importprot != PROTprivate) | |
| 1787 if (overloadApply(from, fa->funcalias, fp, param)) | |
| 1788 return 1; | |
| 1789 next = fa->overnext; | |
| 1790 } | |
| 1791 else | |
| 1792 { | |
| 1793 AliasDeclaration *a = d->isAliasDeclaration(); | |
| 1794 | |
| 1795 if (a) | |
| 1796 { | |
| 1797 Dsymbol *s = a->toAlias(); | |
| 1798 next = s->isDeclaration(); | |
| 1799 if (next == a) | |
| 1800 break; | |
| 1801 if (next == fstart) | |
| 1802 break; | |
| 1803 if (a->importprot == PROTprivate && a->getModule() != from) | |
| 1804 if (FuncDeclaration* fd = next->isFuncDeclaration()) | |
| 1805 next = fd->overnext; | |
| 1806 } | |
| 1807 else | |
| 1808 { | |
| 1809 f = d->isFuncDeclaration(); | |
| 1810 if (!f) | |
| 1811 { d->error("is aliased to a function"); | |
| 1812 break; // BUG: should print error message? | |
| 1813 } | |
| 1814 if ((*fp)(param, f)) | |
| 1815 return 1; | |
| 1816 | |
| 1817 next = f->overnext; | |
| 1818 } | |
| 1819 } | |
| 1820 } | |
| 1821 return 0; | |
| 1822 } | |
| 1823 | |
| 1824 /******************************************** | |
| 1825 * If there are no overloads of function f, return that function, | |
| 1826 * otherwise return NULL. | |
| 1827 */ | |
| 1828 | |
| 1829 static int fpunique(void *param, FuncDeclaration *f) | |
| 1830 { FuncDeclaration **pf = (FuncDeclaration **)param; | |
| 1831 | |
| 1832 if (*pf) | |
| 1833 { *pf = NULL; | |
| 1834 return 1; // ambiguous, done | |
| 1835 } | |
| 1836 else | |
| 1837 { *pf = f; | |
| 1838 return 0; | |
| 1839 } | |
| 1840 } | |
| 1841 | |
| 1842 FuncDeclaration *FuncDeclaration::isUnique() | |
| 1843 { FuncDeclaration *result = NULL; | |
| 1844 | |
| 1845 overloadApply(getModule(), this, &fpunique, &result); | |
| 1846 return result; | |
| 1847 } | |
| 1848 | |
| 1849 /******************************************** | |
| 1850 * Find function in overload list that exactly matches t. | |
| 1851 */ | |
| 1852 | |
| 1853 struct Param1 | |
| 1854 { | |
| 1855 Type *t; // type to match | |
| 1856 FuncDeclaration *f; // return value | |
| 1857 }; | |
| 1858 | |
| 1859 int fp1(void *param, FuncDeclaration *f) | |
| 1860 { Param1 *p = (Param1 *)param; | |
| 1861 Type *t = p->t; | |
| 1862 | |
| 1863 if (t->equals(f->type)) | |
| 1864 { p->f = f; | |
| 1865 return 1; | |
| 1866 } | |
| 1867 | |
| 1868 #if DMDV2 | |
| 1869 /* Allow covariant matches, if it's just a const conversion | |
| 1870 * of the return type | |
| 1871 */ | |
| 1872 if (t->ty == Tfunction) | |
| 1873 { TypeFunction *tf = (TypeFunction *)f->type; | |
| 1874 if (tf->covariant(t) == 1 && | |
| 1875 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
| 1876 { | |
| 1877 p->f = f; | |
| 1878 return 1; | |
| 1879 } | |
| 1880 } | |
| 1881 #endif | |
| 1882 return 0; | |
| 1883 } | |
| 1884 | |
| 1885 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t, Module* from) | |
| 1886 { | |
| 1887 Param1 p; | |
| 1888 p.t = t; | |
| 1889 p.f = NULL; | |
| 1890 overloadApply(from, this, &fp1, &p); | |
| 1891 return p.f; | |
| 1892 } | |
| 1893 | |
| 1894 | |
| 1895 /******************************************** | |
| 1896 * Decide which function matches the arguments best. | |
| 1897 */ | |
| 1898 | |
| 1899 struct Param2 | |
| 1900 { | |
| 1901 Match *m; | |
|
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1902 #if DMDV2 |
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1903 Expression *ethis; |
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1904 #endif |
| 1587 | 1905 Expressions *arguments; |
| 1906 }; | |
| 1907 | |
| 1908 int fp2(void *param, FuncDeclaration *f) | |
| 1909 { Param2 *p = (Param2 *)param; | |
| 1910 Match *m = p->m; | |
| 1911 Expressions *arguments = p->arguments; | |
| 1912 MATCH match; | |
| 1913 | |
| 1914 if (f != m->lastf) // skip duplicates | |
| 1915 { | |
| 1916 m->anyf = f; | |
| 1917 TypeFunction *tf = (TypeFunction *)f->type; | |
| 1918 match = (MATCH) tf->callMatch(arguments); | |
| 1919 //printf("1match = %d\n", match); | |
| 1920 if (match != MATCHnomatch) | |
| 1921 { | |
| 1922 if (match > m->last) | |
| 1923 goto LfIsBetter; | |
| 1924 | |
| 1925 if (match < m->last) | |
| 1926 goto LlastIsBetter; | |
| 1927 | |
| 1928 /* See if one of the matches overrides the other. | |
| 1929 */ | |
| 1930 if (m->lastf->overrides(f)) | |
| 1931 goto LlastIsBetter; | |
| 1932 else if (f->overrides(m->lastf)) | |
| 1933 goto LfIsBetter; | |
| 1934 | |
|
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1935 #if DMDV2 |
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1936 /* Try to disambiguate using template-style partial ordering rules. |
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1937 * In essence, if f() and g() are ambiguous, if f() can call g(), |
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1938 * but g() cannot call f(), then pick f(). |
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1939 * This is because f() is "more specialized." |
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1940 */ |
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1941 { |
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1942 MATCH c1 = f->leastAsSpecialized(m->lastf); |
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1943 MATCH c2 = m->lastf->leastAsSpecialized(f); |
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1944 //printf("c1 = %d, c2 = %d\n", c1, c2); |
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1945 if (c1 > c2) |
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1946 goto LfIsBetter; |
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1947 if (c1 < c2) |
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1948 goto LlastIsBetter; |
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1949 } |
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1950 #endif |
| 1587 | 1951 Lambiguous: |
| 1952 m->nextf = f; | |
| 1953 m->count++; | |
| 1954 return 0; | |
| 1955 | |
| 1956 LfIsBetter: | |
| 1957 m->last = match; | |
| 1958 m->lastf = f; | |
| 1959 m->count = 1; | |
| 1960 return 0; | |
| 1961 | |
| 1962 LlastIsBetter: | |
| 1963 return 0; | |
| 1964 } | |
| 1965 } | |
| 1966 return 0; | |
| 1967 } | |
| 1968 | |
| 1969 | |
| 1970 void overloadResolveX(Match *m, FuncDeclaration *fstart, | |
| 1971 Expression *ethis, Expressions *arguments, Module *from) | |
| 1972 { | |
| 1973 Param2 p; | |
| 1974 p.m = m; | |
| 1975 p.arguments = arguments; | |
| 1976 overloadApply(from, fstart, &fp2, &p); | |
| 1977 } | |
| 1978 | |
| 1979 | |
| 1980 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expression *ethis, Expressions *arguments, Module *from, int flags) | |
| 1981 { | |
| 1982 TypeFunction *tf; | |
| 1983 Match m; | |
| 1984 | |
| 1985 #if 0 | |
| 1986 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
| 1987 if (arguments) | |
| 1988 { int i; | |
| 1989 | |
| 1990 for (i = 0; i < arguments->dim; i++) | |
| 1991 { Expression *arg; | |
| 1992 | |
| 1993 arg = (Expression *)arguments->data[i]; | |
| 1994 assert(arg->type); | |
| 1995 printf("\t%s: ", arg->toChars()); | |
| 1996 arg->type->print(); | |
| 1997 } | |
| 1998 } | |
| 1999 #endif | |
| 2000 | |
| 2001 memset(&m, 0, sizeof(m)); | |
| 2002 m.last = MATCHnomatch; | |
| 2003 overloadResolveX(&m, this, NULL, arguments, from); | |
| 2004 | |
| 2005 if (m.count == 1) // exactly one match | |
| 2006 { | |
| 2007 return m.lastf; | |
| 2008 } | |
| 2009 else | |
| 2010 { | |
| 2011 OutBuffer buf; | |
| 2012 | |
| 2013 if (arguments) | |
| 2014 { | |
| 2015 HdrGenState hgs; | |
| 2016 | |
| 2017 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
| 2018 } | |
| 2019 | |
| 2020 if (m.last == MATCHnomatch) | |
| 2021 { | |
| 2022 tf = (TypeFunction *)type; | |
| 2023 | |
| 2024 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
| 2025 error(loc, "%s does not match parameter types (%s)", | |
|
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2026 Parameter::argsTypesToChars(tf->parameters, tf->varargs), |
| 1587 | 2027 buf.toChars()); |
| 2028 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 2029 } | |
| 2030 else | |
| 2031 { | |
| 2032 #if 1 | |
| 2033 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
| 2034 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
| 2035 | |
| 2036 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 2037 buf.toChars(), | |
|
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2038 m.lastf->toPrettyChars(), Parameter::argsTypesToChars(t1->parameters, t1->varargs), |
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2039 m.nextf->toPrettyChars(), Parameter::argsTypesToChars(t2->parameters, t2->varargs)); |
| 1587 | 2040 #else |
| 2041 error(loc, "overloads %s and %s both match argument list for %s", | |
| 2042 m.lastf->type->toChars(), | |
| 2043 m.nextf->type->toChars(), | |
| 2044 m.lastf->toChars()); | |
| 2045 #endif | |
| 2046 return m.lastf; | |
| 2047 } | |
| 2048 } | |
| 2049 } | |
| 2050 | |
|
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2051 /************************************* |
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2052 * Determine partial specialization order of 'this' vs g. |
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2053 * This is very similar to TemplateDeclaration::leastAsSpecialized(). |
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2054 * Returns: |
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2055 * match 'this' is at least as specialized as g |
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2056 * 0 g is more specialized than 'this' |
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2057 */ |
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2058 |
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2059 #if DMDV2 |
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2060 MATCH FuncDeclaration::leastAsSpecialized(FuncDeclaration *g) |
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2061 { |
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2062 #define LOG_LEASTAS 0 |
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2063 |
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2064 #if LOG_LEASTAS |
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2065 printf("%s.leastAsSpecialized(%s)\n", toChars(), g->toChars()); |
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2066 #endif |
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2067 |
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2068 /* This works by calling g() with f()'s parameters, and |
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2069 * if that is possible, then f() is at least as specialized |
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2070 * as g() is. |
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2071 */ |
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2072 |
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2073 TypeFunction *tf = (TypeFunction *)type; |
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2074 TypeFunction *tg = (TypeFunction *)g->type; |
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2075 size_t nfparams = Parameter::dim(tf->parameters); |
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2076 size_t ngparams = Parameter::dim(tg->parameters); |
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2077 MATCH match = MATCHexact; |
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2078 |
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2079 /* If both functions have a 'this' pointer, and the mods are not |
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2080 * the same and g's is not const, then this is less specialized. |
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2081 */ |
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2082 if (needThis() && g->needThis()) |
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2083 { |
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2084 if (tf->mod != tg->mod) |
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2085 { |
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2086 if (tg->mod == MODconst) |
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2087 match = MATCHconst; |
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2088 else |
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2089 return MATCHnomatch; |
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2090 } |
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2091 } |
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2092 |
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2093 /* Create a dummy array of arguments out of the parameters to f() |
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2094 */ |
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2095 Expressions args; |
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2096 args.setDim(nfparams); |
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2097 for (int u = 0; u < nfparams; u++) |
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2098 { |
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2099 Parameter *p = Parameter::getNth(tf->parameters, u); |
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2100 Expression *e; |
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2101 if (p->storageClass & (STCref | STCout)) |
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2102 { |
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2103 e = new IdentifierExp(0, p->ident); |
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2104 e->type = p->type; |
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2105 } |
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2106 else |
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2107 e = p->type->defaultInit(); |
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2108 args.data[u] = e; |
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2109 } |
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2110 |
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2111 MATCH m = (MATCH) tg->callMatch(NULL, &args); |
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2112 if (m) |
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2113 { |
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2114 /* A variadic parameter list is less specialized than a |
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2115 * non-variadic one. |
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2116 */ |
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2117 if (tf->varargs && !tg->varargs) |
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2118 goto L1; // less specialized |
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2119 |
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2120 #if LOG_LEASTAS |
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2121 printf(" matches %d, so is least as specialized\n", m); |
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2122 #endif |
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2123 return m; |
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2124 } |
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2125 L1: |
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2126 #if LOG_LEASTAS |
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2127 printf(" doesn't match, so is not as specialized\n"); |
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2128 #endif |
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2129 return MATCHnomatch; |
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2130 } |
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2131 |
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2132 /******************************************* |
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2133 * Given a symbol that could be either a FuncDeclaration or |
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2134 * a function template, resolve it to a function symbol. |
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2135 * sc instantiation scope |
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2136 * loc instantiation location |
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2137 * targsi initial list of template arguments |
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2138 * ethis if !NULL, the 'this' pointer argument |
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2139 * fargs arguments to function |
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2140 * flags 1: do not issue error message on no match, just return NULL |
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2141 */ |
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2142 |
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2143 FuncDeclaration *resolveFuncCall(Scope *sc, Loc loc, Dsymbol *s, |
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2144 Objects *tiargs, |
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2145 Expression *ethis, |
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2146 Expressions *arguments, |
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2147 int flags) |
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2148 { |
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2149 if (!s) |
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2150 return NULL; // no match |
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2151 FuncDeclaration *f = s->isFuncDeclaration(); |
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2152 if (f) |
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2153 f = f->overloadResolve(loc, ethis, arguments); |
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2154 else |
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2155 { TemplateDeclaration *td = s->isTemplateDeclaration(); |
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2156 assert(td); |
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2157 f = td->deduceFunctionTemplate(sc, loc, tiargs, NULL, arguments, flags); |
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2158 } |
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2159 return f; |
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2160 } |
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2161 #endif |
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2162 |
| 1587 | 2163 /******************************** |
| 2164 * Labels are in a separate scope, one per function. | |
| 2165 */ | |
| 2166 | |
| 2167 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
| 2168 { Dsymbol *s; | |
| 2169 | |
| 2170 if (!labtab) | |
| 2171 labtab = new DsymbolTable(); // guess we need one | |
| 2172 | |
| 2173 s = labtab->lookup(ident); | |
| 2174 if (!s) | |
| 2175 { | |
| 2176 s = new LabelDsymbol(ident); | |
| 2177 labtab->insert(s); | |
| 2178 } | |
| 2179 return (LabelDsymbol *)s; | |
| 2180 } | |
| 2181 | |
| 2182 /**************************************** | |
| 2183 * If non-static member function that has a 'this' pointer, | |
| 2184 * return the aggregate it is a member of. | |
| 2185 * Otherwise, return NULL. | |
| 2186 */ | |
| 2187 | |
| 2188 AggregateDeclaration *FuncDeclaration::isThis() | |
| 2189 { AggregateDeclaration *ad; | |
| 2190 | |
| 2191 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
| 2192 ad = NULL; | |
| 2193 if ((storage_class & STCstatic) == 0) | |
| 2194 { | |
| 2195 ad = isMember2(); | |
| 2196 } | |
| 2197 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
| 2198 return ad; | |
| 2199 } | |
| 2200 | |
| 2201 AggregateDeclaration *FuncDeclaration::isMember2() | |
| 2202 { AggregateDeclaration *ad; | |
| 2203 | |
| 2204 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
| 2205 ad = NULL; | |
| 2206 for (Dsymbol *s = this; s; s = s->parent) | |
| 2207 { | |
| 2208 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
| 2209 ad = s->isMember(); | |
| 2210 if (ad) | |
| 2211 { //printf("test4\n"); | |
| 2212 break; | |
| 2213 } | |
| 2214 if (!s->parent || | |
| 2215 (!s->parent->isTemplateInstance())) | |
| 2216 { //printf("test5\n"); | |
| 2217 break; | |
| 2218 } | |
| 2219 } | |
| 2220 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
| 2221 return ad; | |
| 2222 } | |
| 2223 | |
| 2224 /***************************************** | |
| 2225 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 2226 * Error if this cannot call fd. | |
| 2227 * Returns: | |
| 2228 * 0 same level | |
| 2229 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 2230 * >0 decrease nesting by number | |
| 2231 */ | |
| 2232 | |
| 2233 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
| 2234 { int level; | |
| 2235 Dsymbol *s; | |
| 2236 Dsymbol *fdparent; | |
| 2237 | |
| 2238 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
| 2239 fdparent = fd->toParent2(); | |
| 2240 if (fdparent == this) | |
| 2241 return -1; | |
| 2242 s = this; | |
| 2243 level = 0; | |
| 2244 while (fd != s && fdparent != s->toParent2()) | |
| 2245 { | |
| 2246 //printf("\ts = '%s'\n", s->toChars()); | |
| 2247 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
| 2248 if (thisfd) | |
| 2249 { if (!thisfd->isNested() && !thisfd->vthis) | |
| 2250 goto Lerr; | |
| 2251 } | |
| 2252 else | |
| 2253 { | |
| 2254 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
| 2255 if (thiscd) | |
| 2256 { if (!thiscd->isNested()) | |
| 2257 goto Lerr; | |
| 2258 } | |
| 2259 else | |
| 2260 goto Lerr; | |
| 2261 } | |
| 2262 | |
| 2263 s = s->toParent2(); | |
| 2264 assert(s); | |
| 2265 level++; | |
| 2266 } | |
| 2267 return level; | |
| 2268 | |
| 2269 Lerr: | |
| 2270 error(loc, "cannot access frame of function %s", fd->toChars()); | |
| 2271 return 1; | |
| 2272 } | |
| 2273 | |
| 2274 void FuncDeclaration::appendExp(Expression *e) | |
| 2275 { Statement *s; | |
| 2276 | |
| 2277 s = new ExpStatement(0, e); | |
| 2278 appendState(s); | |
| 2279 } | |
| 2280 | |
| 2281 void FuncDeclaration::appendState(Statement *s) | |
|
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2282 { |
| 1587 | 2283 if (!fbody) |
| 2284 { Statements *a; | |
| 2285 | |
| 2286 a = new Statements(); | |
| 2287 fbody = new CompoundStatement(0, a); | |
| 2288 } | |
|
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|
2289 CompoundStatement *cs = fbody->isCompoundStatement(); |
| 1587 | 2290 cs->statements->push(s); |
| 2291 } | |
| 2292 | |
| 2293 const char *FuncDeclaration::toPrettyChars() | |
| 2294 { | |
| 2295 if (isMain()) | |
| 2296 return "D main"; | |
| 2297 else | |
| 2298 return Dsymbol::toPrettyChars(); | |
| 2299 } | |
| 2300 | |
| 2301 int FuncDeclaration::isMain() | |
| 2302 { | |
| 2303 return ident == Id::main && | |
| 2304 linkage != LINKc && !isMember() && !isNested(); | |
| 2305 } | |
| 2306 | |
| 2307 int FuncDeclaration::isWinMain() | |
| 2308 { | |
| 2309 //printf("FuncDeclaration::isWinMain() %s\n", toChars()); | |
| 2310 #if 0 | |
| 2311 int x = ident == Id::WinMain && | |
| 2312 linkage != LINKc && !isMember(); | |
| 2313 printf("%s\n", x ? "yes" : "no"); | |
| 2314 return x; | |
| 2315 #else | |
| 2316 return ident == Id::WinMain && | |
| 2317 linkage != LINKc && !isMember(); | |
| 2318 #endif | |
| 2319 } | |
| 2320 | |
| 2321 int FuncDeclaration::isDllMain() | |
| 2322 { | |
| 2323 return ident == Id::DllMain && | |
| 2324 linkage != LINKc && !isMember(); | |
| 2325 } | |
| 2326 | |
| 2327 int FuncDeclaration::isExport() | |
| 2328 { | |
| 2329 return protection == PROTexport; | |
| 2330 } | |
| 2331 | |
| 2332 int FuncDeclaration::isImportedSymbol() | |
| 2333 { | |
| 2334 //printf("isImportedSymbol()\n"); | |
| 2335 //printf("protection = %d\n", protection); | |
| 2336 return (protection == PROTexport) && !fbody; | |
| 2337 } | |
| 2338 | |
| 2339 // Determine if function goes into virtual function pointer table | |
| 2340 | |
| 2341 int FuncDeclaration::isVirtual() | |
| 2342 { | |
| 2343 #if 0 | |
| 2344 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
|
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|
2345 printf("isMember:%p isStatic:%d private:%d ctor:%d !Dlinkage:%d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); |
| 1587 | 2346 printf("result is %d\n", |
| 2347 isMember() && | |
| 2348 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 2349 toParent()->isClassDeclaration()); | |
| 2350 #endif | |
| 2351 return isMember() && | |
| 2352 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 2353 toParent()->isClassDeclaration(); | |
| 2354 } | |
| 2355 | |
| 2356 int FuncDeclaration::isFinal() | |
| 2357 { | |
| 2358 ClassDeclaration *cd; | |
| 2359 #if 0 | |
| 2360 printf("FuncDeclaration::isFinal(%s)\n", toChars()); | |
| 2361 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
| 2362 printf("result is %d\n", | |
| 2363 isMember() && | |
| 2364 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
| 2365 (cd = toParent()->isClassDeclaration()) != NULL && | |
| 2366 cd->storage_class & STCfinal); | |
| 2367 #endif | |
| 2368 return isMember() && | |
| 2369 (Declaration::isFinal() || | |
| 2370 ((cd = toParent()->isClassDeclaration()) != NULL && cd->storage_class & STCfinal)); | |
| 2371 } | |
| 2372 | |
| 2373 int FuncDeclaration::isAbstract() | |
| 2374 { | |
| 2375 return storage_class & STCabstract; | |
| 2376 } | |
| 2377 | |
| 2378 int FuncDeclaration::isCodeseg() | |
| 2379 { | |
| 2380 return TRUE; // functions are always in the code segment | |
| 2381 } | |
| 2382 | |
| 2383 // Determine if function needs | |
| 2384 // a static frame pointer to its lexically enclosing function | |
| 2385 | |
| 2386 int FuncDeclaration::isNested() | |
| 2387 { | |
| 2388 //if (!toParent()) | |
| 2389 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
|
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|
2390 //printf("\ttoParent2() = '%s'\n", toParent2()->toChars()); |
| 1587 | 2391 return ((storage_class & STCstatic) == 0) && toParent2() && |
| 2392 (toParent2()->isFuncDeclaration() != NULL); | |
| 2393 } | |
| 2394 | |
| 2395 int FuncDeclaration::needThis() | |
| 2396 { | |
| 2397 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
| 2398 int i = isThis() != NULL; | |
| 2399 //printf("\t%d\n", i); | |
| 2400 if (!i && isFuncAliasDeclaration()) | |
| 2401 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
| 2402 return i; | |
| 2403 } | |
| 2404 | |
| 2405 int FuncDeclaration::addPreInvariant() | |
| 2406 { | |
| 2407 AggregateDeclaration *ad = isThis(); | |
| 2408 return (ad && | |
| 2409 //ad->isClassDeclaration() && | |
| 2410 global.params.useInvariants && | |
| 2411 (protection == PROTpublic || protection == PROTexport) && | |
| 2412 !naked); | |
| 2413 } | |
| 2414 | |
| 2415 int FuncDeclaration::addPostInvariant() | |
| 2416 { | |
| 2417 AggregateDeclaration *ad = isThis(); | |
| 2418 return (ad && | |
| 2419 ad->inv && | |
| 2420 //ad->isClassDeclaration() && | |
| 2421 global.params.useInvariants && | |
| 2422 (protection == PROTpublic || protection == PROTexport) && | |
| 2423 !naked); | |
| 2424 } | |
| 2425 | |
| 2426 /********************************** | |
| 2427 * Generate a FuncDeclaration for a runtime library function. | |
| 2428 */ | |
| 2429 | |
| 2430 // | |
| 2431 // LDC: Adjusted to give argument info to the runtime function decl. | |
| 2432 // | |
| 2433 | |
|
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|
2434 FuncDeclaration *FuncDeclaration::genCfunc(Parameters *args, Type *treturn, const char *name) |
| 1587 | 2435 { |
| 2436 return genCfunc(args, treturn, Lexer::idPool(name)); | |
| 2437 } | |
| 2438 | |
|
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2439 FuncDeclaration *FuncDeclaration::genCfunc(Parameters *args, Type *treturn, Identifier *id) |
| 1587 | 2440 { |
| 2441 FuncDeclaration *fd; | |
| 2442 TypeFunction *tf; | |
| 2443 Dsymbol *s; | |
| 2444 static DsymbolTable *st = NULL; | |
| 2445 | |
| 2446 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
| 2447 //printf("treturn\n\t"); treturn->print(); | |
| 2448 | |
| 2449 // See if already in table | |
| 2450 if (!st) | |
| 2451 st = new DsymbolTable(); | |
| 2452 s = st->lookup(id); | |
| 2453 if (s) | |
| 2454 { | |
| 2455 fd = s->isFuncDeclaration(); | |
| 2456 assert(fd); | |
| 2457 assert(fd->type->nextOf()->equals(treturn)); | |
| 2458 } | |
| 2459 else | |
| 2460 { | |
| 2461 tf = new TypeFunction(args, treturn, 0, LINKc); | |
| 2462 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); | |
| 2463 fd->protection = PROTpublic; | |
| 2464 fd->linkage = LINKc; | |
| 2465 | |
| 2466 st->insert(fd); | |
| 2467 } | |
| 2468 return fd; | |
| 2469 } | |
| 2470 | |
| 2471 const char *FuncDeclaration::kind() | |
| 2472 { | |
| 2473 return "function"; | |
| 2474 } | |
| 2475 | |
| 2476 /******************************* | |
| 2477 * Look at all the variables in this function that are referenced | |
| 2478 * by nested functions, and determine if a closure needs to be | |
| 2479 * created for them. | |
| 2480 */ | |
| 2481 | |
| 2482 #if DMDV2 | |
| 2483 int FuncDeclaration::needsClosure() | |
| 2484 { | |
| 2485 /* Need a closure for all the closureVars[] if any of the | |
| 2486 * closureVars[] are accessed by a | |
| 2487 * function that escapes the scope of this function. | |
| 2488 * We take the conservative approach and decide that any function that: | |
| 2489 * 1) is a virtual function | |
| 2490 * 2) has its address taken | |
| 2491 * 3) has a parent that escapes | |
| 2492 * | |
| 2493 * Note that since a non-virtual function can be called by | |
| 2494 * a virtual one, if that non-virtual function accesses a closure | |
| 2495 * var, the closure still has to be taken. Hence, we check for isThis() | |
| 2496 * instead of isVirtual(). (thanks to David Friedman) | |
| 2497 */ | |
| 2498 | |
| 2499 //printf("FuncDeclaration::needsClosure() %s\n", toChars()); | |
| 2500 for (int i = 0; i < closureVars.dim; i++) | |
| 2501 { VarDeclaration *v = (VarDeclaration *)closureVars.data[i]; | |
| 2502 assert(v->isVarDeclaration()); | |
| 2503 //printf("\tv = %s\n", v->toChars()); | |
| 2504 | |
| 2505 for (int j = 0; j < v->nestedrefs.dim; j++) | |
| 2506 { FuncDeclaration *f = (FuncDeclaration *)v->nestedrefs.data[j]; | |
| 2507 assert(f != this); | |
| 2508 | |
| 2509 //printf("\t\tf = %s, %d, %d\n", f->toChars(), f->isVirtual(), f->tookAddressOf); | |
| 2510 if (f->isThis() || f->tookAddressOf) | |
| 2511 goto Lyes; // assume f escapes this function's scope | |
| 2512 | |
| 2513 // Look to see if any parents of f that are below this escape | |
| 2514 for (Dsymbol *s = f->parent; s && s != this; s = s->parent) | |
| 2515 { | |
| 2516 f = s->isFuncDeclaration(); | |
| 2517 if (f && (f->isThis() || f->tookAddressOf)) | |
| 2518 goto Lyes; | |
| 2519 } | |
| 2520 } | |
| 2521 } | |
| 2522 return 0; | |
| 2523 | |
| 2524 Lyes: | |
| 2525 //printf("\tneeds closure\n"); | |
| 2526 return 1; | |
| 2527 } | |
| 2528 #endif | |
| 2529 | |
|
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2530 /********************************************* |
|
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|
2531 * Return the function's parameter list, and whether |
|
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2532 * it is variadic or not. |
|
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2533 */ |
|
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|
2534 |
|
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|
2535 Parameters *FuncDeclaration::getParameters(int *pvarargs) |
|
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|
2536 { Parameters *fparameters; |
|
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|
2537 int fvarargs; |
|
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|
2538 |
|
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|
2539 if (type) |
|
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|
2540 { |
|
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|
2541 assert(type->ty == Tfunction); |
|
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|
2542 TypeFunction *fdtype = (TypeFunction *)type; |
|
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|
2543 fparameters = fdtype->parameters; |
|
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2544 fvarargs = fdtype->varargs; |
|
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|
2545 } |
|
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|
2546 else // Constructors don't have type's |
|
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|
2547 { CtorDeclaration *fctor = isCtorDeclaration(); |
|
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|
2548 assert(fctor); |
|
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2549 fparameters = fctor->arguments; |
|
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|
2550 fvarargs = fctor->varargs; |
|
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2551 } |
|
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|
2552 if (pvarargs) |
|
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|
2553 *pvarargs = fvarargs; |
|
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2554 return fparameters; |
|
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2555 } |
|
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|
2556 |
|
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2557 |
| 1587 | 2558 /****************************** FuncAliasDeclaration ************************/ |
| 2559 | |
| 2560 // Used as a way to import a set of functions from another scope into this one. | |
| 2561 | |
| 2562 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
| 2563 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
| 2564 (enum STC)funcalias->storage_class, funcalias->type) | |
| 2565 { | |
| 2566 assert(funcalias != this); | |
| 2567 this->funcalias = funcalias; | |
| 2568 importprot = PROTundefined; | |
| 2569 } | |
| 2570 | |
| 2571 const char *FuncAliasDeclaration::kind() | |
| 2572 { | |
| 2573 return "function alias"; | |
| 2574 } | |
| 2575 | |
| 2576 | |
| 2577 /****************************** FuncLiteralDeclaration ************************/ | |
| 2578 | |
| 2579 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
| 2580 enum TOK tok, ForeachStatement *fes) | |
| 2581 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
| 2582 { | |
| 2583 const char *id; | |
| 2584 | |
| 2585 if (fes) | |
| 2586 id = "__foreachbody"; | |
| 2587 else if (tok == TOKdelegate) | |
| 2588 id = "__dgliteral"; | |
| 2589 else | |
| 2590 id = "__funcliteral"; | |
|
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2591 this->ident = Lexer::uniqueId(id); |
| 1587 | 2592 this->tok = tok; |
| 2593 this->fes = fes; | |
| 2594 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
| 2595 } | |
| 2596 | |
| 2597 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
| 2598 { | |
| 2599 FuncLiteralDeclaration *f; | |
| 2600 | |
| 2601 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 2602 if (s) | |
| 2603 f = (FuncLiteralDeclaration *)s; | |
| 2604 else | |
|
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|
2605 { f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); |
|
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|
2606 f->ident = ident; // keep old identifier |
|
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|
2607 } |
| 1587 | 2608 FuncDeclaration::syntaxCopy(f); |
| 2609 return f; | |
| 2610 } | |
| 2611 | |
| 2612 int FuncLiteralDeclaration::isNested() | |
| 2613 { | |
| 2614 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
| 2615 return (tok == TOKdelegate); | |
| 2616 } | |
| 2617 | |
| 2618 int FuncLiteralDeclaration::isVirtual() | |
| 2619 { | |
| 2620 return FALSE; | |
| 2621 } | |
| 2622 | |
| 2623 const char *FuncLiteralDeclaration::kind() | |
| 2624 { | |
| 2625 // GCC requires the (char*) casts | |
| 2626 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
| 2627 } | |
| 2628 | |
| 2629 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2630 { | |
| 2631 static Identifier *idfunc; | |
| 2632 static Identifier *iddel; | |
| 2633 | |
| 2634 if (!idfunc) | |
| 2635 idfunc = new Identifier("function", 0); | |
| 2636 if (!iddel) | |
| 2637 iddel = new Identifier("delegate", 0); | |
| 2638 | |
| 2639 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
| 2640 bodyToCBuffer(buf, hgs); | |
| 2641 } | |
| 2642 | |
| 2643 | |
| 2644 /********************************* CtorDeclaration ****************************/ | |
| 2645 | |
|
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|
2646 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Parameters *arguments, int varargs) |
| 1587 | 2647 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) |
| 2648 { | |
| 2649 this->arguments = arguments; | |
| 2650 this->varargs = varargs; | |
| 2651 //printf("CtorDeclaration(loc = %s) %s\n", loc.toChars(), toChars()); | |
| 2652 } | |
| 2653 | |
| 2654 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2655 { | |
| 2656 CtorDeclaration *f; | |
| 2657 | |
| 2658 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
| 2659 | |
| 2660 f->outId = outId; | |
| 2661 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
| 2662 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
| 2663 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
| 2664 assert(!fthrows); // deprecated | |
| 2665 | |
|
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|
2666 f->arguments = Parameter::arraySyntaxCopy(arguments); |
| 1587 | 2667 return f; |
| 2668 } | |
| 2669 | |
| 2670 | |
| 2671 void CtorDeclaration::semantic(Scope *sc) | |
| 2672 { | |
|
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|
2673 //printf("CtorDeclaration::semantic() %s\n", toChars()); |
| 1587 | 2674 sc = sc->push(); |
| 2675 sc->stc &= ~STCstatic; // not a static constructor | |
| 2676 | |
| 2677 parent = sc->parent; | |
| 2678 Dsymbol *parent = toParent(); | |
|
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|
2679 Type *tret; |
|
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2680 ClassDeclaration *cd = parent->isClassDeclaration(); |
| 1587 | 2681 if (!cd) |
| 2682 { | |
| 2683 error("constructors are only for class definitions"); | |
| 2684 fatal(); | |
| 2685 tret = Type::tvoid; | |
| 2686 } | |
| 2687 else | |
| 2688 tret = cd->type; //->referenceTo(); | |
|
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2689 if (!type) |
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|
2690 type = new TypeFunction(arguments, tret, varargs, LINKd); |
| 1587 | 2691 #if STRUCTTHISREF |
| 2692 if (ad && ad->isStructDeclaration()) | |
| 2693 ((TypeFunction *)type)->isref = 1; | |
| 2694 #endif | |
| 2695 if (!originalType) | |
| 2696 originalType = type; | |
| 2697 | |
| 2698 sc->flags |= SCOPEctor; | |
| 2699 type = type->semantic(loc, sc); | |
| 2700 sc->flags &= ~SCOPEctor; | |
| 2701 | |
| 2702 // Append: | |
| 2703 // return this; | |
| 2704 // to the function body | |
|
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2705 if (fbody && semanticRun < PASSsemantic) |
| 1587 | 2706 { |
| 2707 Expression *e = new ThisExp(loc); | |
| 2708 Statement *s = new ReturnStatement(loc, e); | |
| 2709 fbody = new CompoundStatement(loc, fbody, s); | |
| 2710 } | |
| 2711 | |
| 2712 FuncDeclaration::semantic(sc); | |
| 2713 | |
| 2714 sc->pop(); | |
| 2715 | |
| 2716 // See if it's the default constructor | |
|
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|
2717 if (cd && varargs == 0 && Parameter::dim(arguments) == 0) |
| 1587 | 2718 cd->defaultCtor = this; |
| 2719 } | |
| 2720 | |
| 2721 const char *CtorDeclaration::kind() | |
| 2722 { | |
| 2723 return "constructor"; | |
| 2724 } | |
| 2725 | |
| 2726 char *CtorDeclaration::toChars() | |
| 2727 { | |
| 2728 return (char *)"this"; | |
| 2729 } | |
| 2730 | |
| 2731 int CtorDeclaration::isVirtual() | |
| 2732 { | |
| 2733 return FALSE; | |
| 2734 } | |
| 2735 | |
| 2736 int CtorDeclaration::addPreInvariant() | |
| 2737 { | |
| 2738 return FALSE; | |
| 2739 } | |
| 2740 | |
| 2741 int CtorDeclaration::addPostInvariant() | |
| 2742 { | |
| 2743 return (isThis() && vthis && global.params.useInvariants); | |
| 2744 } | |
| 2745 | |
| 2746 | |
| 2747 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2748 { | |
| 2749 buf->writestring("this"); | |
|
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|
2750 Parameter::argsToCBuffer(buf, hgs, arguments, varargs); |
| 1587 | 2751 bodyToCBuffer(buf, hgs); |
| 2752 } | |
| 2753 | |
| 2754 /********************************* PostBlitDeclaration ****************************/ | |
| 2755 | |
| 2756 #if DMDV2 | |
| 2757 PostBlitDeclaration::PostBlitDeclaration(Loc loc, Loc endloc) | |
| 2758 : FuncDeclaration(loc, endloc, Id::_postblit, STCundefined, NULL) | |
| 2759 { | |
| 2760 } | |
| 2761 | |
| 2762 PostBlitDeclaration::PostBlitDeclaration(Loc loc, Loc endloc, Identifier *id) | |
| 2763 : FuncDeclaration(loc, endloc, id, STCundefined, NULL) | |
| 2764 { | |
| 2765 } | |
| 2766 | |
| 2767 Dsymbol *PostBlitDeclaration::syntaxCopy(Dsymbol *s) | |
| 2768 { | |
| 2769 assert(!s); | |
| 2770 PostBlitDeclaration *dd = new PostBlitDeclaration(loc, endloc, ident); | |
| 2771 return FuncDeclaration::syntaxCopy(dd); | |
| 2772 } | |
| 2773 | |
| 2774 | |
| 2775 void PostBlitDeclaration::semantic(Scope *sc) | |
| 2776 { | |
| 2777 //printf("PostBlitDeclaration::semantic() %s\n", toChars()); | |
| 2778 //printf("ident: %s, %s, %p, %p\n", ident->toChars(), Id::dtor->toChars(), ident, Id::dtor); | |
|
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|
2779 //printf("stc = x%llx\n", sc->stc); |
| 1587 | 2780 parent = sc->parent; |
| 2781 Dsymbol *parent = toParent(); | |
| 2782 StructDeclaration *ad = parent->isStructDeclaration(); | |
| 2783 if (!ad) | |
| 2784 { | |
| 2785 error("post blits are only for struct/union definitions, not %s %s", parent->kind(), parent->toChars()); | |
| 2786 } | |
|
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|
2787 else if (ident == Id::_postblit && semanticRun < PASSsemantic) |
| 1587 | 2788 ad->postblits.push(this); |
|
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|
2789 |
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|
2790 if (!type) |
|
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|
2791 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 2792 |
| 2793 sc = sc->push(); | |
| 2794 sc->stc &= ~STCstatic; // not static | |
| 2795 sc->linkage = LINKd; | |
| 2796 | |
| 2797 FuncDeclaration::semantic(sc); | |
| 2798 | |
| 2799 sc->pop(); | |
| 2800 } | |
| 2801 | |
| 2802 int PostBlitDeclaration::overloadInsert(Dsymbol *s) | |
| 2803 { | |
| 2804 return FALSE; // cannot overload postblits | |
| 2805 } | |
| 2806 | |
| 2807 int PostBlitDeclaration::addPreInvariant() | |
| 2808 { | |
| 2809 return FALSE; | |
| 2810 } | |
| 2811 | |
| 2812 int PostBlitDeclaration::addPostInvariant() | |
| 2813 { | |
| 2814 return (isThis() && vthis && global.params.useInvariants); | |
| 2815 } | |
| 2816 | |
| 2817 int PostBlitDeclaration::isVirtual() | |
| 2818 { | |
| 2819 return FALSE; | |
| 2820 } | |
| 2821 | |
| 2822 void PostBlitDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2823 { | |
|
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|
2824 buf->writestring("this(this)"); |
| 1587 | 2825 bodyToCBuffer(buf, hgs); |
| 2826 } | |
| 2827 #endif | |
| 2828 | |
| 2829 /********************************* DtorDeclaration ****************************/ | |
| 2830 | |
| 2831 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
| 2832 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
| 2833 { | |
| 2834 } | |
| 2835 | |
| 2836 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc, Identifier *id) | |
| 2837 : FuncDeclaration(loc, endloc, id, STCundefined, NULL) | |
| 2838 { | |
| 2839 } | |
| 2840 | |
| 2841 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2842 { | |
| 2843 assert(!s); | |
| 2844 DtorDeclaration *dd = new DtorDeclaration(loc, endloc, ident); | |
| 2845 return FuncDeclaration::syntaxCopy(dd); | |
| 2846 } | |
| 2847 | |
| 2848 | |
| 2849 void DtorDeclaration::semantic(Scope *sc) | |
| 2850 { | |
| 2851 //printf("DtorDeclaration::semantic() %s\n", toChars()); | |
| 2852 //printf("ident: %s, %s, %p, %p\n", ident->toChars(), Id::dtor->toChars(), ident, Id::dtor); | |
| 2853 parent = sc->parent; | |
| 2854 Dsymbol *parent = toParent(); | |
| 2855 ClassDeclaration *cd = parent->isClassDeclaration(); | |
| 2856 if (!cd) | |
| 2857 { | |
| 2858 error("destructors are only for class/struct/union definitions, not %s %s", parent->kind(), parent->toChars()); | |
| 2859 fatal(); | |
| 2860 } | |
|
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|
2861 else if (semanticRun < PASSsemantic) |
| 1587 | 2862 cd->dtors.push(this); |
|
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2863 |
|
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|
2864 if (!type) |
|
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|
2865 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 2866 |
| 2867 sc = sc->push(); | |
| 2868 sc->stc &= ~STCstatic; // not a static destructor | |
| 2869 sc->linkage = LINKd; | |
| 2870 | |
| 2871 FuncDeclaration::semantic(sc); | |
| 2872 | |
| 2873 sc->pop(); | |
| 2874 } | |
| 2875 | |
| 2876 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
| 2877 { | |
| 2878 return FALSE; // cannot overload destructors | |
| 2879 } | |
| 2880 | |
| 2881 int DtorDeclaration::addPreInvariant() | |
| 2882 { | |
| 2883 return (isThis() && vthis && global.params.useInvariants); | |
| 2884 } | |
| 2885 | |
| 2886 int DtorDeclaration::addPostInvariant() | |
| 2887 { | |
| 2888 return FALSE; | |
| 2889 } | |
| 2890 | |
| 2891 const char *DtorDeclaration::kind() | |
| 2892 { | |
| 2893 return "destructor"; | |
| 2894 } | |
| 2895 | |
| 2896 char *DtorDeclaration::toChars() | |
| 2897 { | |
| 2898 return (char *)"~this"; | |
| 2899 } | |
| 2900 | |
| 2901 int DtorDeclaration::isVirtual() | |
| 2902 { | |
| 2903 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
| 2904 * but doing so will require recompiling everything. | |
| 2905 */ | |
| 2906 #if BREAKABI | |
| 2907 return FALSE; | |
| 2908 #else | |
| 2909 return FuncDeclaration::isVirtual(); | |
| 2910 #endif | |
| 2911 } | |
| 2912 | |
| 2913 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2914 { | |
| 2915 if (hgs->hdrgen) | |
| 2916 return; | |
| 2917 buf->writestring("~this()"); | |
| 2918 bodyToCBuffer(buf, hgs); | |
| 2919 } | |
| 2920 | |
| 2921 /********************************* StaticCtorDeclaration ****************************/ | |
| 2922 | |
| 2923 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
| 2924 : FuncDeclaration(loc, endloc, | |
| 2925 Identifier::generateId("_staticCtor"), STCstatic, NULL) | |
| 2926 { | |
| 2927 } | |
| 2928 | |
| 2929 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 2930 { | |
| 2931 assert(!s); | |
|
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|
2932 StaticCtorDeclaration *scd = new StaticCtorDeclaration(loc, endloc); |
| 1587 | 2933 return FuncDeclaration::syntaxCopy(scd); |
| 2934 } | |
| 2935 | |
| 2936 | |
| 2937 void StaticCtorDeclaration::semantic(Scope *sc) | |
| 2938 { | |
| 2939 //printf("StaticCtorDeclaration::semantic()\n"); | |
| 2940 | |
|
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2941 if (!type) |
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Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
2942 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 2943 |
| 2944 /* If the static ctor appears within a template instantiation, | |
| 2945 * it could get called multiple times by the module constructors | |
| 2946 * for different modules. Thus, protect it with a gate. | |
| 2947 */ | |
|
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parents:
1617
diff
changeset
|
2948 if (inTemplateInstance() && semanticRun < PASSsemantic) |
| 1587 | 2949 { |
| 2950 /* Add this prefix to the function: | |
| 2951 * static int gate; | |
| 2952 * if (++gate != 1) return; | |
| 2953 * Note that this is not thread safe; should not have threads | |
| 2954 * during static construction. | |
| 2955 */ | |
| 2956 Identifier *id = Lexer::idPool("__gate"); | |
| 2957 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 2958 v->storage_class = STCstatic; | |
| 2959 Statements *sa = new Statements(); | |
| 2960 Statement *s = new DeclarationStatement(0, v); | |
| 2961 sa->push(s); | |
| 2962 Expression *e = new IdentifierExp(0, id); | |
| 2963 e = new AddAssignExp(0, e, new IntegerExp(1)); | |
| 2964 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(1)); | |
| 2965 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); | |
| 2966 sa->push(s); | |
| 2967 if (fbody) | |
| 2968 sa->push(fbody); | |
| 2969 fbody = new CompoundStatement(0, sa); | |
| 2970 } | |
| 2971 | |
| 2972 FuncDeclaration::semantic(sc); | |
| 2973 | |
| 2974 // We're going to need ModuleInfo | |
| 2975 Module *m = getModule(); | |
| 2976 if (!m) | |
| 2977 m = sc->module; | |
| 2978 if (m) | |
| 2979 { m->needmoduleinfo = 1; | |
|
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parents:
1617
diff
changeset
|
2980 //printf("module1 %s needs moduleinfo\n", m->toChars()); |
| 1587 | 2981 #ifdef IN_GCC |
| 2982 m->strictlyneedmoduleinfo = 1; | |
| 2983 #endif | |
| 2984 } | |
| 2985 } | |
| 2986 | |
| 2987 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
| 2988 { | |
| 2989 return NULL; | |
| 2990 } | |
| 2991 | |
| 2992 int StaticCtorDeclaration::isStaticConstructor() | |
| 2993 { | |
| 2994 return TRUE; | |
| 2995 } | |
| 2996 | |
| 2997 int StaticCtorDeclaration::isVirtual() | |
| 2998 { | |
| 2999 return FALSE; | |
| 3000 } | |
| 3001 | |
| 3002 int StaticCtorDeclaration::addPreInvariant() | |
| 3003 { | |
| 3004 return FALSE; | |
| 3005 } | |
| 3006 | |
| 3007 int StaticCtorDeclaration::addPostInvariant() | |
| 3008 { | |
| 3009 return FALSE; | |
| 3010 } | |
| 3011 | |
| 3012 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3013 { | |
| 3014 if (hgs->hdrgen) | |
| 3015 { buf->writestring("static this();\n"); | |
| 3016 return; | |
| 3017 } | |
| 3018 buf->writestring("static this()"); | |
| 3019 bodyToCBuffer(buf, hgs); | |
| 3020 } | |
| 3021 | |
| 3022 /********************************* StaticDtorDeclaration ****************************/ | |
| 3023 | |
| 3024 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
| 3025 : FuncDeclaration(loc, endloc, | |
| 3026 Identifier::generateId("_staticDtor"), STCstatic, NULL) | |
| 3027 { | |
| 3028 vgate = NULL; | |
| 3029 } | |
| 3030 | |
| 3031 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
| 3032 { | |
| 3033 StaticDtorDeclaration *sdd; | |
| 3034 | |
| 3035 assert(!s); | |
| 3036 sdd = new StaticDtorDeclaration(loc, endloc); | |
| 3037 return FuncDeclaration::syntaxCopy(sdd); | |
| 3038 } | |
| 3039 | |
| 3040 | |
| 3041 void StaticDtorDeclaration::semantic(Scope *sc) | |
| 3042 { | |
|
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Merge dmd 1.056.
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parents:
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diff
changeset
|
3043 ClassDeclaration *cd = sc->scopesym->isClassDeclaration(); |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
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diff
changeset
|
3044 |
|
44b145be2ef5
Merge dmd 1.056.
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parents:
1617
diff
changeset
|
3045 if (!type) |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3046 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 3047 |
| 3048 /* If the static ctor appears within a template instantiation, | |
| 3049 * it could get called multiple times by the module constructors | |
| 3050 * for different modules. Thus, protect it with a gate. | |
| 3051 */ | |
|
1630
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Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3052 if (inTemplateInstance() && semanticRun < PASSsemantic) |
| 1587 | 3053 { |
| 3054 /* Add this prefix to the function: | |
| 3055 * static int gate; | |
| 3056 * if (--gate != 0) return; | |
| 3057 * Increment gate during constructor execution. | |
| 3058 * Note that this is not thread safe; should not have threads | |
| 3059 * during static destruction. | |
| 3060 */ | |
| 3061 Identifier *id = Lexer::idPool("__gate"); | |
| 3062 VarDeclaration *v = new VarDeclaration(0, Type::tint32, id, NULL); | |
| 3063 v->storage_class = STCstatic; | |
| 3064 Statements *sa = new Statements(); | |
| 3065 Statement *s = new DeclarationStatement(0, v); | |
| 3066 sa->push(s); | |
| 3067 Expression *e = new IdentifierExp(0, id); | |
| 3068 e = new AddAssignExp(0, e, new IntegerExp((uint64_t)-1)); | |
| 3069 e = new EqualExp(TOKnotequal, 0, e, new IntegerExp(0)); | |
| 3070 s = new IfStatement(0, NULL, e, new ReturnStatement(0, NULL), NULL); | |
| 3071 sa->push(s); | |
| 3072 if (fbody) | |
| 3073 sa->push(fbody); | |
| 3074 fbody = new CompoundStatement(0, sa); | |
| 3075 vgate = v; | |
| 3076 } | |
| 3077 | |
| 3078 FuncDeclaration::semantic(sc); | |
| 3079 | |
| 3080 // We're going to need ModuleInfo | |
| 3081 Module *m = getModule(); | |
| 3082 if (!m) | |
| 3083 m = sc->module; | |
| 3084 if (m) | |
| 3085 { m->needmoduleinfo = 1; | |
|
1602
a413ae7329bf
Merge DMD r243: some harmonization with D2 dmd
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
3086 //printf("module2 %s needs moduleinfo\n", m->toChars()); |
| 1587 | 3087 #ifdef IN_GCC |
| 3088 m->strictlyneedmoduleinfo = 1; | |
| 3089 #endif | |
| 3090 } | |
| 3091 } | |
| 3092 | |
| 3093 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
| 3094 { | |
| 3095 return NULL; | |
| 3096 } | |
| 3097 | |
| 3098 int StaticDtorDeclaration::isStaticDestructor() | |
| 3099 { | |
| 3100 return TRUE; | |
| 3101 } | |
| 3102 | |
| 3103 int StaticDtorDeclaration::isVirtual() | |
| 3104 { | |
| 3105 return FALSE; | |
| 3106 } | |
| 3107 | |
| 3108 int StaticDtorDeclaration::addPreInvariant() | |
| 3109 { | |
| 3110 return FALSE; | |
| 3111 } | |
| 3112 | |
| 3113 int StaticDtorDeclaration::addPostInvariant() | |
| 3114 { | |
| 3115 return FALSE; | |
| 3116 } | |
| 3117 | |
| 3118 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3119 { | |
| 3120 if (hgs->hdrgen) | |
| 3121 return; | |
| 3122 buf->writestring("static ~this()"); | |
| 3123 bodyToCBuffer(buf, hgs); | |
| 3124 } | |
| 3125 | |
| 3126 /********************************* InvariantDeclaration ****************************/ | |
| 3127 | |
| 3128 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
| 3129 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
| 3130 { | |
| 3131 } | |
| 3132 | |
| 3133 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
| 3134 { | |
| 3135 InvariantDeclaration *id; | |
| 3136 | |
| 3137 assert(!s); | |
| 3138 id = new InvariantDeclaration(loc, endloc); | |
| 3139 FuncDeclaration::syntaxCopy(id); | |
| 3140 return id; | |
| 3141 } | |
| 3142 | |
| 3143 | |
| 3144 void InvariantDeclaration::semantic(Scope *sc) | |
| 3145 { | |
| 3146 parent = sc->parent; | |
| 3147 Dsymbol *parent = toParent(); | |
|
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parents:
1617
diff
changeset
|
3148 AggregateDeclaration *ad = parent->isAggregateDeclaration(); |
| 1587 | 3149 if (!ad) |
| 3150 { | |
| 3151 error("invariants are only for struct/union/class definitions"); | |
| 3152 return; | |
| 3153 } | |
|
1630
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Merge dmd 1.056.
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parents:
1617
diff
changeset
|
3154 else if (ad->inv && ad->inv != this && semanticRun < PASSsemantic) |
| 1587 | 3155 { |
| 3156 error("more than one invariant for %s", ad->toChars()); | |
| 3157 } | |
| 3158 ad->inv = this; | |
|
1630
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Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3159 if (!type) |
|
44b145be2ef5
Merge dmd 1.056.
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parents:
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diff
changeset
|
3160 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 3161 |
| 3162 sc = sc->push(); | |
| 3163 sc->stc &= ~STCstatic; // not a static invariant | |
| 3164 sc->incontract++; | |
| 3165 sc->linkage = LINKd; | |
| 3166 | |
| 3167 FuncDeclaration::semantic(sc); | |
| 3168 | |
| 3169 sc->pop(); | |
| 3170 } | |
| 3171 | |
| 3172 int InvariantDeclaration::isVirtual() | |
| 3173 { | |
| 3174 return FALSE; | |
| 3175 } | |
| 3176 | |
| 3177 int InvariantDeclaration::addPreInvariant() | |
| 3178 { | |
| 3179 return FALSE; | |
| 3180 } | |
| 3181 | |
| 3182 int InvariantDeclaration::addPostInvariant() | |
| 3183 { | |
| 3184 return FALSE; | |
| 3185 } | |
| 3186 | |
| 3187 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3188 { | |
| 3189 if (hgs->hdrgen) | |
| 3190 return; | |
| 3191 buf->writestring("invariant"); | |
| 3192 bodyToCBuffer(buf, hgs); | |
| 3193 } | |
| 3194 | |
| 3195 | |
| 3196 /********************************* UnitTestDeclaration ****************************/ | |
| 3197 | |
| 3198 /******************************* | |
| 3199 * Generate unique unittest function Id so we can have multiple | |
| 3200 * instances per module. | |
| 3201 */ | |
| 3202 | |
| 3203 static Identifier *unitTestId() | |
| 3204 { | |
| 3205 return Lexer::uniqueId("__unittest"); | |
| 3206 } | |
| 3207 | |
| 3208 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
| 3209 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
| 3210 { | |
| 3211 } | |
| 3212 | |
| 3213 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
| 3214 { | |
| 3215 UnitTestDeclaration *utd; | |
| 3216 | |
| 3217 assert(!s); | |
| 3218 utd = new UnitTestDeclaration(loc, endloc); | |
| 3219 return FuncDeclaration::syntaxCopy(utd); | |
| 3220 } | |
| 3221 | |
| 3222 | |
| 3223 void UnitTestDeclaration::semantic(Scope *sc) | |
| 3224 { | |
| 3225 if (global.params.useUnitTests) | |
| 3226 { | |
|
1630
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Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3227 if (!type) |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3228 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); |
| 1587 | 3229 Scope *sc2 = sc->push(); |
| 3230 sc2->linkage = LINKd; | |
| 3231 FuncDeclaration::semantic(sc2); | |
| 3232 sc2->pop(); | |
| 3233 } | |
| 3234 | |
| 3235 #if 0 | |
| 3236 // We're going to need ModuleInfo even if the unit tests are not | |
| 3237 // compiled in, because other modules may import this module and refer | |
| 3238 // to this ModuleInfo. | |
| 3239 // (This doesn't make sense to me?) | |
| 3240 Module *m = getModule(); | |
| 3241 if (!m) | |
| 3242 m = sc->module; | |
| 3243 if (m) | |
| 3244 { | |
| 3245 //printf("module3 %s needs moduleinfo\n", m->toChars()); | |
| 3246 m->needmoduleinfo = 1; | |
| 3247 } | |
| 3248 #endif | |
| 3249 } | |
| 3250 | |
| 3251 AggregateDeclaration *UnitTestDeclaration::isThis() | |
| 3252 { | |
| 3253 return NULL; | |
| 3254 } | |
| 3255 | |
| 3256 int UnitTestDeclaration::isVirtual() | |
| 3257 { | |
| 3258 return FALSE; | |
| 3259 } | |
| 3260 | |
| 3261 int UnitTestDeclaration::addPreInvariant() | |
| 3262 { | |
| 3263 return FALSE; | |
| 3264 } | |
| 3265 | |
| 3266 int UnitTestDeclaration::addPostInvariant() | |
| 3267 { | |
| 3268 return FALSE; | |
| 3269 } | |
| 3270 | |
| 3271 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3272 { | |
| 3273 if (hgs->hdrgen) | |
| 3274 return; | |
| 3275 buf->writestring("unittest"); | |
| 3276 bodyToCBuffer(buf, hgs); | |
| 3277 } | |
| 3278 | |
| 3279 /********************************* NewDeclaration ****************************/ | |
| 3280 | |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3281 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Parameters *arguments, int varargs) |
| 1587 | 3282 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) |
| 3283 { | |
| 3284 this->arguments = arguments; | |
| 3285 this->varargs = varargs; | |
| 3286 } | |
| 3287 | |
| 3288 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
| 3289 { | |
| 3290 NewDeclaration *f; | |
| 3291 | |
| 3292 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
| 3293 | |
| 3294 FuncDeclaration::syntaxCopy(f); | |
| 3295 | |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3296 f->arguments = Parameter::arraySyntaxCopy(arguments); |
| 1587 | 3297 |
| 3298 return f; | |
| 3299 } | |
| 3300 | |
| 3301 | |
| 3302 void NewDeclaration::semantic(Scope *sc) | |
| 3303 { | |
| 3304 //printf("NewDeclaration::semantic()\n"); | |
| 3305 | |
| 3306 parent = sc->parent; | |
| 3307 Dsymbol *parent = toParent(); | |
|
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parents:
1617
diff
changeset
|
3308 ClassDeclaration *cd = parent->isClassDeclaration(); |
| 1587 | 3309 if (!cd && !parent->isStructDeclaration()) |
| 3310 { | |
| 3311 error("new allocators only are for class or struct definitions"); | |
| 3312 } | |
|
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Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1617
diff
changeset
|
3313 Type *tret = Type::tvoid->pointerTo(); |
|
44b145be2ef5
Merge dmd 1.056.
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parents:
1617
diff
changeset
|
3314 if (!type) |
|
44b145be2ef5
Merge dmd 1.056.
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parents:
1617
diff
changeset
|
3315 type = new TypeFunction(arguments, tret, varargs, LINKd); |
| 1587 | 3316 |
| 3317 type = type->semantic(loc, sc); | |
| 3318 assert(type->ty == Tfunction); | |
| 3319 | |
| 3320 // Check that there is at least one argument of type size_t | |
| 3321 TypeFunction *tf = (TypeFunction *)type; | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3322 if (Parameter::dim(tf->parameters) < 1) |
| 1587 | 3323 { |
| 3324 error("at least one argument of type size_t expected"); | |
| 3325 } | |
| 3326 else | |
| 3327 { | |
|
1607
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Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3328 Parameter *a = Parameter::getNth(tf->parameters, 0); |
| 1587 | 3329 if (!a->type->equals(Type::tsize_t)) |
| 3330 error("first argument must be type size_t, not %s", a->type->toChars()); | |
| 3331 } | |
| 3332 | |
| 3333 FuncDeclaration::semantic(sc); | |
| 3334 } | |
| 3335 | |
| 3336 const char *NewDeclaration::kind() | |
| 3337 { | |
| 3338 return "allocator"; | |
| 3339 } | |
| 3340 | |
| 3341 int NewDeclaration::isVirtual() | |
| 3342 { | |
| 3343 return FALSE; | |
| 3344 } | |
| 3345 | |
| 3346 int NewDeclaration::addPreInvariant() | |
| 3347 { | |
| 3348 return FALSE; | |
| 3349 } | |
| 3350 | |
| 3351 int NewDeclaration::addPostInvariant() | |
| 3352 { | |
| 3353 return FALSE; | |
| 3354 } | |
| 3355 | |
| 3356 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3357 { | |
| 3358 buf->writestring("new"); | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3359 Parameter::argsToCBuffer(buf, hgs, arguments, varargs); |
| 1587 | 3360 bodyToCBuffer(buf, hgs); |
| 3361 } | |
| 3362 | |
| 3363 | |
| 3364 /********************************* DeleteDeclaration ****************************/ | |
| 3365 | |
|
1607
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Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3366 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Parameters *arguments) |
| 1587 | 3367 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) |
| 3368 { | |
| 3369 this->arguments = arguments; | |
| 3370 } | |
| 3371 | |
| 3372 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
| 3373 { | |
| 3374 DeleteDeclaration *f; | |
| 3375 | |
| 3376 f = new DeleteDeclaration(loc, endloc, NULL); | |
| 3377 | |
| 3378 FuncDeclaration::syntaxCopy(f); | |
| 3379 | |
|
1607
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Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3380 f->arguments = Parameter::arraySyntaxCopy(arguments); |
| 1587 | 3381 |
| 3382 return f; | |
| 3383 } | |
| 3384 | |
| 3385 | |
| 3386 void DeleteDeclaration::semantic(Scope *sc) | |
| 3387 { | |
| 3388 //printf("DeleteDeclaration::semantic()\n"); | |
| 3389 | |
| 3390 parent = sc->parent; | |
| 3391 Dsymbol *parent = toParent(); | |
|
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1617
diff
changeset
|
3392 ClassDeclaration *cd = parent->isClassDeclaration(); |
| 1587 | 3393 if (!cd && !parent->isStructDeclaration()) |
| 3394 { | |
| 3395 error("new allocators only are for class or struct definitions"); | |
| 3396 } | |
|
1630
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Merge dmd 1.056.
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1617
diff
changeset
|
3397 if (!type) |
|
44b145be2ef5
Merge dmd 1.056.
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parents:
1617
diff
changeset
|
3398 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); |
| 1587 | 3399 |
| 3400 type = type->semantic(loc, sc); | |
| 3401 assert(type->ty == Tfunction); | |
| 3402 | |
| 3403 // Check that there is only one argument of type void* | |
| 3404 TypeFunction *tf = (TypeFunction *)type; | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3405 if (Parameter::dim(tf->parameters) != 1) |
| 1587 | 3406 { |
| 3407 error("one argument of type void* expected"); | |
| 3408 } | |
| 3409 else | |
| 3410 { | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3411 Parameter *a = Parameter::getNth(tf->parameters, 0); |
| 1587 | 3412 if (!a->type->equals(Type::tvoid->pointerTo())) |
| 3413 error("one argument of type void* expected, not %s", a->type->toChars()); | |
| 3414 } | |
| 3415 | |
| 3416 FuncDeclaration::semantic(sc); | |
| 3417 } | |
| 3418 | |
| 3419 const char *DeleteDeclaration::kind() | |
| 3420 { | |
| 3421 return "deallocator"; | |
| 3422 } | |
| 3423 | |
| 3424 int DeleteDeclaration::isDelete() | |
| 3425 { | |
| 3426 return TRUE; | |
| 3427 } | |
| 3428 | |
| 3429 int DeleteDeclaration::isVirtual() | |
| 3430 { | |
| 3431 return FALSE; | |
| 3432 } | |
| 3433 | |
| 3434 int DeleteDeclaration::addPreInvariant() | |
| 3435 { | |
| 3436 return FALSE; | |
| 3437 } | |
| 3438 | |
| 3439 int DeleteDeclaration::addPostInvariant() | |
| 3440 { | |
| 3441 return FALSE; | |
| 3442 } | |
| 3443 | |
| 3444 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3445 { | |
| 3446 buf->writestring("delete"); | |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1602
diff
changeset
|
3447 Parameter::argsToCBuffer(buf, hgs, arguments, 0); |
| 1587 | 3448 bodyToCBuffer(buf, hgs); |
| 3449 } | |
| 3450 | |
| 3451 | |
| 3452 | |
| 3453 |