Mercurial > projects > ldc
annotate dmd/class.c @ 884:a166ba5bdf2d
Automated merge with http://hg.dsource.org/projects/ldc
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 12 Jan 2009 07:51:39 +0100 |
| parents | 330f999ade44 |
| children | b30fe7e1dbb9 |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2008 by Digital Mars | |
| 4 // All Rights Reserved | |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <stdlib.h> | |
| 13 #include <assert.h> | |
| 14 | |
| 15 #include "root.h" | |
| 16 #include "mem.h" | |
| 17 | |
| 18 #include "enum.h" | |
| 19 #include "init.h" | |
| 20 #include "attrib.h" | |
| 21 #include "declaration.h" | |
| 22 #include "aggregate.h" | |
| 23 #include "id.h" | |
| 24 #include "mtype.h" | |
| 25 #include "scope.h" | |
| 26 #include "module.h" | |
| 27 #include "expression.h" | |
| 28 #include "statement.h" | |
| 29 | |
| 30 /********************************* ClassDeclaration ****************************/ | |
| 31 | |
| 32 ClassDeclaration *ClassDeclaration::classinfo; | |
| 33 ClassDeclaration *ClassDeclaration::object; | |
| 34 | |
| 35 ClassDeclaration::ClassDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses) | |
| 36 : AggregateDeclaration(loc, id) | |
| 37 { | |
| 38 static char msg[] = "only object.d can define this reserved class name"; | |
| 39 | |
| 40 if (baseclasses) | |
| 41 this->baseclasses = *baseclasses; | |
| 42 baseClass = NULL; | |
| 43 | |
| 44 interfaces_dim = 0; | |
| 45 interfaces = NULL; | |
| 46 | |
| 47 vtblInterfaces = NULL; | |
| 48 | |
| 49 //printf("ClassDeclaration(%s), dim = %d\n", id->toChars(), this->baseclasses.dim); | |
| 50 | |
| 51 // For forward references | |
| 52 type = new TypeClass(this); | |
| 53 handle = type; | |
| 54 | |
| 55 ctor = NULL; | |
| 56 defaultCtor = NULL; | |
| 57 staticCtor = NULL; | |
| 58 staticDtor = NULL; | |
| 59 | |
| 60 vtblsym = NULL; | |
| 61 vclassinfo = NULL; | |
| 62 | |
| 63 if (id) | |
| 64 { // Look for special class names | |
| 65 | |
| 66 if (id == Id::__sizeof || id == Id::alignof || id == Id::mangleof) | |
| 67 error("illegal class name"); | |
| 68 | |
| 69 // BUG: What if this is the wrong TypeInfo, i.e. it is nested? | |
| 70 if (id->toChars()[0] == 'T') | |
| 71 { | |
| 72 if (id == Id::TypeInfo) | |
| 73 { if (Type::typeinfo) | |
| 74 Type::typeinfo->error("%s", msg); | |
| 75 Type::typeinfo = this; | |
| 76 } | |
| 77 | |
| 78 if (id == Id::TypeInfo_Class) | |
| 79 { if (Type::typeinfoclass) | |
| 80 Type::typeinfoclass->error("%s", msg); | |
| 81 Type::typeinfoclass = this; | |
| 82 } | |
| 83 | |
| 84 if (id == Id::TypeInfo_Interface) | |
| 85 { if (Type::typeinfointerface) | |
| 86 Type::typeinfointerface->error("%s", msg); | |
| 87 Type::typeinfointerface = this; | |
| 88 } | |
| 89 | |
| 90 if (id == Id::TypeInfo_Struct) | |
| 91 { if (Type::typeinfostruct) | |
| 92 Type::typeinfostruct->error("%s", msg); | |
| 93 Type::typeinfostruct = this; | |
| 94 } | |
| 95 | |
| 96 if (id == Id::TypeInfo_Typedef) | |
| 97 { if (Type::typeinfotypedef) | |
| 98 Type::typeinfotypedef->error("%s", msg); | |
| 99 Type::typeinfotypedef = this; | |
| 100 } | |
| 101 | |
| 102 if (id == Id::TypeInfo_Pointer) | |
| 103 { if (Type::typeinfopointer) | |
| 104 Type::typeinfopointer->error("%s", msg); | |
| 105 Type::typeinfopointer = this; | |
| 106 } | |
| 107 | |
| 108 if (id == Id::TypeInfo_Array) | |
| 109 { if (Type::typeinfoarray) | |
| 110 Type::typeinfoarray->error("%s", msg); | |
| 111 Type::typeinfoarray = this; | |
| 112 } | |
| 113 | |
| 114 if (id == Id::TypeInfo_StaticArray) | |
| 115 { //if (Type::typeinfostaticarray) | |
| 116 //Type::typeinfostaticarray->error("%s", msg); | |
| 117 Type::typeinfostaticarray = this; | |
| 118 } | |
| 119 | |
| 120 if (id == Id::TypeInfo_AssociativeArray) | |
| 121 { if (Type::typeinfoassociativearray) | |
| 122 Type::typeinfoassociativearray->error("%s", msg); | |
| 123 Type::typeinfoassociativearray = this; | |
| 124 } | |
| 125 | |
| 126 if (id == Id::TypeInfo_Enum) | |
| 127 { if (Type::typeinfoenum) | |
| 128 Type::typeinfoenum->error("%s", msg); | |
| 129 Type::typeinfoenum = this; | |
| 130 } | |
| 131 | |
| 132 if (id == Id::TypeInfo_Function) | |
| 133 { if (Type::typeinfofunction) | |
| 134 Type::typeinfofunction->error("%s", msg); | |
| 135 Type::typeinfofunction = this; | |
| 136 } | |
| 137 | |
| 138 if (id == Id::TypeInfo_Delegate) | |
| 139 { if (Type::typeinfodelegate) | |
| 140 Type::typeinfodelegate->error("%s", msg); | |
| 141 Type::typeinfodelegate = this; | |
| 142 } | |
| 143 | |
| 144 if (id == Id::TypeInfo_Tuple) | |
| 145 { if (Type::typeinfotypelist) | |
| 146 Type::typeinfotypelist->error("%s", msg); | |
| 147 Type::typeinfotypelist = this; | |
| 148 } | |
| 149 | |
| 336 | 150 #if DMDV2 |
| 159 | 151 if (id == Id::TypeInfo_Const) |
| 152 { if (Type::typeinfoconst) | |
| 153 Type::typeinfoconst->error("%s", msg); | |
| 154 Type::typeinfoconst = this; | |
| 155 } | |
| 156 | |
| 157 if (id == Id::TypeInfo_Invariant) | |
| 158 { if (Type::typeinfoinvariant) | |
| 159 Type::typeinfoinvariant->error("%s", msg); | |
| 160 Type::typeinfoinvariant = this; | |
| 161 } | |
| 162 #endif | |
| 163 } | |
| 164 | |
| 165 if (id == Id::Object) | |
| 166 { if (object) | |
| 167 object->error("%s", msg); | |
| 168 object = this; | |
| 169 } | |
| 170 | |
| 171 if (id == Id::ClassInfo) | |
| 172 { if (classinfo) | |
| 173 classinfo->error("%s", msg); | |
| 174 classinfo = this; | |
| 175 } | |
| 176 | |
| 177 if (id == Id::ModuleInfo) | |
| 178 { if (Module::moduleinfo) | |
| 179 Module::moduleinfo->error("%s", msg); | |
| 180 Module::moduleinfo = this; | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 com = 0; | |
| 185 isauto = 0; | |
| 186 isabstract = 0; | |
| 187 isnested = 0; | |
| 188 vthis = NULL; | |
| 189 inuse = 0; | |
| 190 } | |
| 191 | |
| 192 Dsymbol *ClassDeclaration::syntaxCopy(Dsymbol *s) | |
| 193 { | |
| 194 ClassDeclaration *cd; | |
| 195 | |
| 196 //printf("ClassDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 197 if (s) | |
| 198 cd = (ClassDeclaration *)s; | |
| 199 else | |
| 200 cd = new ClassDeclaration(loc, ident, NULL); | |
| 201 | |
| 202 cd->storage_class |= storage_class; | |
| 203 | |
| 204 cd->baseclasses.setDim(this->baseclasses.dim); | |
| 205 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 206 { | |
| 207 BaseClass *b = (BaseClass *)this->baseclasses.data[i]; | |
| 208 BaseClass *b2 = new BaseClass(b->type->syntaxCopy(), b->protection); | |
| 209 cd->baseclasses.data[i] = b2; | |
| 210 } | |
| 211 | |
| 212 ScopeDsymbol::syntaxCopy(cd); | |
| 213 return cd; | |
| 214 } | |
| 215 | |
| 216 void ClassDeclaration::semantic(Scope *sc) | |
| 217 { int i; | |
| 218 unsigned offset; | |
| 219 | |
| 220 //printf("ClassDeclaration::semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 221 //printf("\tparent = %p, '%s'\n", sc->parent, sc->parent ? sc->parent->toChars() : ""); | |
| 222 //printf("sc->stc = %x\n", sc->stc); | |
| 223 | |
| 224 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 225 | |
| 226 if (!ident) // if anonymous class | |
| 227 { char *id = "__anonclass"; | |
| 228 | |
| 229 ident = Identifier::generateId(id); | |
| 230 } | |
| 231 | |
| 232 if (!scope) | |
| 233 { | |
| 234 if (!parent && sc->parent && !sc->parent->isModule()) | |
| 235 parent = sc->parent; | |
| 236 | |
| 237 type = type->semantic(loc, sc); | |
| 238 handle = handle->semantic(loc, sc); | |
| 239 } | |
| 240 if (!members) // if forward reference | |
| 241 { //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 242 return; | |
| 243 } | |
| 244 if (symtab) | |
| 245 { if (!scope) | |
| 246 { //printf("\tsemantic for '%s' is already completed\n", toChars()); | |
| 247 return; // semantic() already completed | |
| 248 } | |
| 249 } | |
| 250 else | |
| 251 symtab = new DsymbolTable(); | |
| 252 | |
| 253 Scope *scx = NULL; | |
| 254 if (scope) | |
| 255 { sc = scope; | |
| 256 scx = scope; // save so we don't make redundant copies | |
| 257 scope = NULL; | |
| 258 } | |
| 259 #ifdef IN_GCC | |
| 260 methods.setDim(0); | |
| 261 #endif | |
| 262 | |
| 263 if (sc->stc & STCdeprecated) | |
| 336 | 264 { |
| 159 | 265 isdeprecated = 1; |
| 266 } | |
| 267 | |
| 268 // Expand any tuples in baseclasses[] | |
| 269 for (i = 0; i < baseclasses.dim; ) | |
| 270 { BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 271 b->type = b->type->semantic(loc, sc); | |
| 272 Type *tb = b->type->toBasetype(); | |
| 273 | |
| 274 if (tb->ty == Ttuple) | |
| 275 { TypeTuple *tup = (TypeTuple *)tb; | |
| 276 enum PROT protection = b->protection; | |
| 277 baseclasses.remove(i); | |
| 278 size_t dim = Argument::dim(tup->arguments); | |
| 279 for (size_t j = 0; j < dim; j++) | |
| 280 { Argument *arg = Argument::getNth(tup->arguments, j); | |
| 281 b = new BaseClass(arg->type, protection); | |
| 282 baseclasses.insert(i + j, b); | |
| 283 } | |
| 284 } | |
| 285 else | |
| 286 i++; | |
| 287 } | |
| 288 | |
| 289 // See if there's a base class as first in baseclasses[] | |
| 290 if (baseclasses.dim) | |
| 291 { TypeClass *tc; | |
| 292 BaseClass *b; | |
| 293 Type *tb; | |
| 294 | |
| 295 b = (BaseClass *)baseclasses.data[0]; | |
| 296 //b->type = b->type->semantic(loc, sc); | |
| 297 tb = b->type->toBasetype(); | |
| 298 if (tb->ty != Tclass) | |
| 299 { error("base type must be class or interface, not %s", b->type->toChars()); | |
| 300 baseclasses.remove(0); | |
| 301 } | |
| 302 else | |
| 303 { | |
| 304 tc = (TypeClass *)(tb); | |
| 336 | 305 |
| 159 | 306 if (tc->sym->isDeprecated()) |
| 307 { | |
| 308 if (!isDeprecated()) | |
| 309 { | |
| 310 // Deriving from deprecated class makes this one deprecated too | |
| 311 isdeprecated = 1; | |
| 312 | |
| 313 tc->checkDeprecated(loc, sc); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 if (tc->sym->isInterfaceDeclaration()) | |
| 318 ; | |
| 319 else | |
| 320 { | |
| 321 for (ClassDeclaration *cdb = tc->sym; cdb; cdb = cdb->baseClass) | |
| 322 { | |
| 323 if (cdb == this) | |
| 324 { | |
| 325 error("circular inheritance"); | |
| 326 baseclasses.remove(0); | |
| 327 goto L7; | |
| 328 } | |
| 329 } | |
| 330 if (!tc->sym->symtab || tc->sym->scope || tc->sym->sizeok == 0) | |
| 331 { | |
| 332 //error("forward reference of base class %s", baseClass->toChars()); | |
| 333 // Forward reference of base class, try again later | |
| 334 //printf("\ttry later, forward reference of base class %s\n", tc->sym->toChars()); | |
| 335 scope = scx ? scx : new Scope(*sc); | |
| 336 scope->setNoFree(); | |
| 337 scope->module->addDeferredSemantic(this); | |
| 338 return; | |
| 339 } | |
| 340 else | |
| 341 { baseClass = tc->sym; | |
| 342 b->base = baseClass; | |
| 343 } | |
| 344 L7: ; | |
| 345 } | |
| 346 } | |
| 347 } | |
| 348 | |
| 349 // Treat the remaining entries in baseclasses as interfaces | |
| 350 // Check for errors, handle forward references | |
| 351 for (i = (baseClass ? 1 : 0); i < baseclasses.dim; ) | |
| 352 { TypeClass *tc; | |
| 353 BaseClass *b; | |
| 354 Type *tb; | |
| 355 | |
| 356 b = (BaseClass *)baseclasses.data[i]; | |
| 357 b->type = b->type->semantic(loc, sc); | |
| 358 tb = b->type->toBasetype(); | |
| 359 if (tb->ty == Tclass) | |
| 360 tc = (TypeClass *)tb; | |
| 361 else | |
| 362 tc = NULL; | |
| 363 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 364 { | |
| 365 error("base type must be interface, not %s", b->type->toChars()); | |
| 366 baseclasses.remove(i); | |
| 367 continue; | |
| 368 } | |
| 369 else | |
| 370 { | |
| 371 if (tc->sym->isDeprecated()) | |
| 372 { | |
| 373 if (!isDeprecated()) | |
| 374 { | |
| 375 // Deriving from deprecated class makes this one deprecated too | |
| 376 isdeprecated = 1; | |
| 377 | |
| 378 tc->checkDeprecated(loc, sc); | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 // Check for duplicate interfaces | |
| 383 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 384 { | |
| 385 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 386 if (b2->base == tc->sym) | |
| 387 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 388 } | |
| 389 | |
| 390 b->base = tc->sym; | |
| 391 if (!b->base->symtab || b->base->scope) | |
| 392 { | |
| 393 //error("forward reference of base class %s", baseClass->toChars()); | |
| 394 // Forward reference of base, try again later | |
| 395 //printf("\ttry later, forward reference of base %s\n", baseClass->toChars()); | |
| 396 scope = scx ? scx : new Scope(*sc); | |
| 397 scope->setNoFree(); | |
| 398 scope->module->addDeferredSemantic(this); | |
| 399 return; | |
| 400 } | |
| 401 } | |
| 402 i++; | |
| 403 } | |
| 404 | |
| 405 | |
| 406 // If no base class, and this is not an Object, use Object as base class | |
| 407 if (!baseClass && ident != Id::Object) | |
| 408 { | |
| 409 // BUG: what if Object is redefined in an inner scope? | |
| 410 Type *tbase = new TypeIdentifier(0, Id::Object); | |
| 411 BaseClass *b; | |
| 412 TypeClass *tc; | |
| 413 Type *bt; | |
| 414 | |
| 415 if (!object) | |
| 416 { | |
| 417 error("missing or corrupt object.d"); | |
| 418 fatal(); | |
| 419 } | |
| 420 bt = tbase->semantic(loc, sc)->toBasetype(); | |
| 421 b = new BaseClass(bt, PROTpublic); | |
| 422 baseclasses.shift(b); | |
| 423 assert(b->type->ty == Tclass); | |
| 424 tc = (TypeClass *)(b->type); | |
| 425 baseClass = tc->sym; | |
| 426 assert(!baseClass->isInterfaceDeclaration()); | |
| 427 b->base = baseClass; | |
| 428 } | |
| 429 | |
| 430 interfaces_dim = baseclasses.dim; | |
| 431 interfaces = (BaseClass **)baseclasses.data; | |
| 432 | |
| 433 | |
| 434 if (baseClass) | |
| 435 { | |
| 436 if (baseClass->storage_class & STCfinal) | |
| 437 error("cannot inherit from final class %s", baseClass->toChars()); | |
| 438 | |
| 439 interfaces_dim--; | |
| 440 interfaces++; | |
| 441 | |
| 442 // Copy vtbl[] from base class | |
| 443 vtbl.setDim(baseClass->vtbl.dim); | |
| 444 memcpy(vtbl.data, baseClass->vtbl.data, sizeof(void *) * vtbl.dim); | |
| 445 | |
| 446 // Inherit properties from base class | |
| 447 com = baseClass->isCOMclass(); | |
| 448 isauto = baseClass->isauto; | |
| 449 vthis = baseClass->vthis; | |
| 450 } | |
| 451 else | |
| 452 { | |
| 453 // No base class, so this is the root of the class hierarchy | |
| 454 vtbl.setDim(0); | |
| 455 vtbl.push(this); // leave room for classinfo as first member | |
| 456 } | |
| 457 | |
| 458 protection = sc->protection; | |
| 459 storage_class |= sc->stc; | |
| 460 | |
| 461 if (sizeok == 0) | |
| 462 { | |
| 463 interfaceSemantic(sc); | |
| 464 | |
| 465 for (i = 0; i < members->dim; i++) | |
| 466 { | |
| 467 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 468 s->addMember(sc, this, 1); | |
| 469 } | |
| 470 | |
| 471 /* If this is a nested class, add the hidden 'this' | |
| 472 * member which is a pointer to the enclosing scope. | |
| 473 */ | |
| 474 if (vthis) // if inheriting from nested class | |
| 475 { // Use the base class's 'this' member | |
| 476 isnested = 1; | |
| 477 if (storage_class & STCstatic) | |
| 478 error("static class cannot inherit from nested class %s", baseClass->toChars()); | |
| 479 if (toParent2() != baseClass->toParent2()) | |
|
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480 { |
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481 if (toParent2()) |
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482 { |
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483 error("is nested within %s, but super class %s is nested within %s", |
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484 toParent2()->toChars(), |
| 159 | 485 baseClass->toChars(), |
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486 baseClass->toParent2()->toChars()); |
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487 } |
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488 else |
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489 { |
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490 error("is not nested, but super class %s is nested within %s", |
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491 baseClass->toChars(), |
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492 baseClass->toParent2()->toChars()); |
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493 } |
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494 isnested = 0; |
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495 } |
| 159 | 496 } |
| 497 else if (!(storage_class & STCstatic)) | |
| 498 { Dsymbol *s = toParent2(); | |
| 499 if (s) | |
| 500 { | |
| 501 ClassDeclaration *cd = s->isClassDeclaration(); | |
| 502 FuncDeclaration *fd = s->isFuncDeclaration(); | |
| 503 | |
| 504 | |
| 505 if (cd || fd) | |
| 506 { isnested = 1; | |
| 507 Type *t; | |
| 508 if (cd) | |
| 509 t = cd->type; | |
| 510 else if (fd) | |
| 511 { AggregateDeclaration *ad = fd->isMember2(); | |
| 512 if (ad) | |
| 513 t = ad->handle; | |
| 514 else | |
| 515 { | |
| 516 t = new TypePointer(Type::tvoid); | |
| 517 t = t->semantic(0, sc); | |
| 518 } | |
| 519 } | |
| 520 else | |
| 521 assert(0); | |
| 522 assert(!vthis); | |
| 523 vthis = new ThisDeclaration(t); | |
| 524 members->push(vthis); | |
| 525 } | |
| 526 } | |
| 527 } | |
| 528 } | |
| 529 | |
| 530 if (storage_class & (STCauto | STCscope)) | |
| 531 isauto = 1; | |
| 532 if (storage_class & STCabstract) | |
| 533 isabstract = 1; | |
| 534 | |
| 535 sc = sc->push(this); | |
| 536 sc->stc &= ~(STCfinal | STCauto | STCscope | STCstatic | | |
| 537 STCabstract | STCdeprecated); | |
| 538 sc->parent = this; | |
| 539 sc->inunion = 0; | |
| 540 | |
| 541 if (isCOMclass()) | |
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542 { |
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543 #if _WIN32 |
| 159 | 544 sc->linkage = LINKwindows; |
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545 #else |
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546 /* This enables us to use COM objects under Linux and |
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parents:
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547 * work with things like XPCOM |
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Merged DMD 1.038
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parents:
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548 */ |
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parents:
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|
549 sc->linkage = LINKc; |
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550 #endif |
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551 } |
| 159 | 552 sc->protection = PROTpublic; |
| 553 sc->explicitProtection = 0; | |
| 554 sc->structalign = 8; | |
| 555 structalign = sc->structalign; | |
| 556 if (baseClass) | |
| 557 { sc->offset = baseClass->structsize; | |
| 558 alignsize = baseClass->alignsize; | |
| 559 // if (isnested) | |
| 560 // sc->offset += PTRSIZE; // room for uplevel context pointer | |
| 561 } | |
| 562 else | |
|
809
69a5e4a6fc0f
Changed some hardcoded offset/alignment for classes in DMD, broke offsets for 64bits.
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parents:
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diff
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|
563 { sc->offset = 2*PTRSIZE; // allow room for vptr[] and monitor |
|
69a5e4a6fc0f
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parents:
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diff
changeset
|
564 alignsize = PTRSIZE; |
| 159 | 565 } |
| 566 structsize = sc->offset; | |
| 567 Scope scsave = *sc; | |
| 568 int members_dim = members->dim; | |
| 569 sizeok = 0; | |
| 570 for (i = 0; i < members_dim; i++) | |
| 571 { | |
| 572 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 573 s->semantic(sc); | |
| 574 } | |
| 575 | |
| 576 if (sizeok == 2) | |
| 577 { // semantic() failed because of forward references. | |
| 578 // Unwind what we did, and defer it for later | |
| 579 fields.setDim(0); | |
| 580 structsize = 0; | |
| 581 alignsize = 0; | |
| 582 structalign = 0; | |
| 583 | |
| 584 sc = sc->pop(); | |
| 585 | |
| 586 scope = scx ? scx : new Scope(*sc); | |
| 587 scope->setNoFree(); | |
| 588 scope->module->addDeferredSemantic(this); | |
| 589 | |
| 336 | 590 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); |
| 159 | 591 return; |
| 592 } | |
| 593 | |
| 594 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 595 | |
| 596 structsize = sc->offset; | |
| 597 //members->print(); | |
| 598 | |
| 599 /* Look for special member functions. | |
| 600 * They must be in this class, not in a base class. | |
| 601 */ | |
| 602 ctor = (CtorDeclaration *)search(0, Id::ctor, 0); | |
|
658
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Upgraded frontend to DMD 1.035
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diff
changeset
|
603 if (ctor && (ctor->toParent() != this || !ctor->isCtorDeclaration())) |
| 159 | 604 ctor = NULL; |
| 605 | |
| 606 // dtor = (DtorDeclaration *)search(Id::dtor, 0); | |
| 607 // if (dtor && dtor->toParent() != this) | |
| 608 // dtor = NULL; | |
| 609 | |
| 610 // inv = (InvariantDeclaration *)search(Id::classInvariant, 0); | |
| 611 // if (inv && inv->toParent() != this) | |
| 612 // inv = NULL; | |
| 613 | |
| 614 // Can be in base class | |
| 615 aggNew = (NewDeclaration *)search(0, Id::classNew, 0); | |
| 616 aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0); | |
| 617 | |
| 618 // If this class has no constructor, but base class does, create | |
| 619 // a constructor: | |
| 620 // this() { } | |
| 621 if (!ctor && baseClass && baseClass->ctor) | |
| 622 { | |
| 623 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 336 | 624 ctor = new CtorDeclaration(loc, 0, NULL, 0); |
| 159 | 625 ctor->fbody = new CompoundStatement(0, new Statements()); |
| 626 members->push(ctor); | |
| 627 ctor->addMember(sc, this, 1); | |
| 628 *sc = scsave; // why? What about sc->nofree? | |
| 629 sc->offset = structsize; | |
| 630 ctor->semantic(sc); | |
| 631 defaultCtor = ctor; | |
| 632 } | |
| 633 | |
| 634 #if 0 | |
| 635 if (baseClass) | |
| 636 { if (!aggDelete) | |
| 637 aggDelete = baseClass->aggDelete; | |
| 638 if (!aggNew) | |
| 639 aggNew = baseClass->aggNew; | |
| 640 } | |
| 641 #endif | |
| 642 | |
| 643 // Allocate instance of each new interface | |
| 644 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 645 { | |
| 646 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 647 unsigned thissize = PTRSIZE; | |
| 648 | |
| 649 alignmember(structalign, thissize, &sc->offset); | |
| 650 assert(b->offset == 0); | |
| 651 b->offset = sc->offset; | |
| 652 | |
| 653 // Take care of single inheritance offsets | |
| 654 while (b->baseInterfaces_dim) | |
| 655 { | |
| 656 b = &b->baseInterfaces[0]; | |
| 657 b->offset = sc->offset; | |
| 658 } | |
| 659 | |
| 660 sc->offset += thissize; | |
| 661 if (alignsize < thissize) | |
| 662 alignsize = thissize; | |
| 663 } | |
| 664 structsize = sc->offset; | |
| 665 sizeok = 1; | |
| 666 Module::dprogress++; | |
| 667 | |
| 668 dtor = buildDtor(sc); | |
| 669 | |
| 670 sc->pop(); | |
| 671 | |
| 672 #if 0 // Do not call until toObjfile() because of forward references | |
| 673 // Fill in base class vtbl[]s | |
| 674 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 675 { | |
| 676 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 677 | |
| 678 //b->fillVtbl(this, &b->vtbl, 1); | |
| 679 } | |
| 680 #endif | |
| 681 //printf("-ClassDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 682 } | |
| 683 | |
| 684 void ClassDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 685 { | |
| 686 if (!isAnonymous()) | |
| 687 { | |
| 688 buf->printf("%s ", kind()); | |
| 689 buf->writestring(toChars()); | |
| 690 if (baseclasses.dim) | |
| 691 buf->writestring(" : "); | |
| 692 } | |
| 693 for (int i = 0; i < baseclasses.dim; i++) | |
| 694 { | |
| 695 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 696 | |
| 697 if (i) | |
| 698 buf->writeByte(','); | |
| 699 //buf->writestring(b->base->ident->toChars()); | |
| 700 b->type->toCBuffer(buf, NULL, hgs); | |
| 701 } | |
| 702 buf->writenl(); | |
| 703 buf->writeByte('{'); | |
| 704 buf->writenl(); | |
| 705 for (int i = 0; i < members->dim; i++) | |
| 706 { | |
| 707 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 708 | |
| 709 buf->writestring(" "); | |
| 710 s->toCBuffer(buf, hgs); | |
| 711 } | |
| 712 buf->writestring("}"); | |
| 713 buf->writenl(); | |
| 714 } | |
| 715 | |
| 716 #if 0 | |
| 717 void ClassDeclaration::defineRef(Dsymbol *s) | |
| 718 { | |
| 719 ClassDeclaration *cd; | |
| 720 | |
| 721 AggregateDeclaration::defineRef(s); | |
| 722 cd = s->isClassDeclaration(); | |
| 723 baseType = cd->baseType; | |
| 724 cd->baseType = NULL; | |
| 725 } | |
| 726 #endif | |
| 727 | |
| 728 /********************************************* | |
| 729 * Determine if 'this' is a base class of cd. | |
| 730 * This is used to detect circular inheritance only. | |
| 731 */ | |
| 732 | |
| 733 int ClassDeclaration::isBaseOf2(ClassDeclaration *cd) | |
| 734 { | |
| 735 if (!cd) | |
| 736 return 0; | |
| 737 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 738 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 739 { BaseClass *b = (BaseClass *)cd->baseclasses.data[i]; | |
| 740 | |
| 741 if (b->base == this || isBaseOf2(b->base)) | |
| 742 return 1; | |
| 743 } | |
| 744 return 0; | |
| 745 } | |
| 746 | |
| 747 /******************************************* | |
| 748 * Determine if 'this' is a base class of cd. | |
| 749 */ | |
| 750 | |
| 751 int ClassDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 752 { | |
| 753 //printf("ClassDeclaration::isBaseOf(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 754 if (poffset) | |
| 755 *poffset = 0; | |
| 756 while (cd) | |
| 757 { | |
| 758 if (this == cd->baseClass) | |
| 759 return 1; | |
| 760 | |
| 761 /* cd->baseClass might not be set if cd is forward referenced. | |
| 762 */ | |
| 763 if (!cd->baseClass && cd->baseclasses.dim && !cd->isInterfaceDeclaration()) | |
| 764 { | |
| 765 cd->error("base class is forward referenced by %s", toChars()); | |
| 766 } | |
| 767 | |
| 768 cd = cd->baseClass; | |
| 769 } | |
| 770 return 0; | |
| 771 } | |
| 772 | |
| 773 Dsymbol *ClassDeclaration::search(Loc loc, Identifier *ident, int flags) | |
| 774 { | |
| 775 Dsymbol *s; | |
| 776 | |
| 777 //printf("%s.ClassDeclaration::search('%s')\n", toChars(), ident->toChars()); | |
| 778 if (scope) | |
| 779 semantic(scope); | |
| 780 | |
| 781 if (!members || !symtab || scope) | |
| 782 { error("is forward referenced when looking for '%s'", ident->toChars()); | |
| 783 //*(char*)0=0; | |
| 784 return NULL; | |
| 785 } | |
| 786 | |
| 787 s = ScopeDsymbol::search(loc, ident, flags); | |
| 788 if (!s) | |
| 789 { | |
| 790 // Search bases classes in depth-first, left to right order | |
| 791 | |
| 792 int i; | |
| 793 | |
| 794 for (i = 0; i < baseclasses.dim; i++) | |
| 795 { | |
| 796 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 797 | |
| 798 if (b->base) | |
| 799 { | |
| 800 if (!b->base->symtab) | |
| 801 error("base %s is forward referenced", b->base->ident->toChars()); | |
| 802 else | |
| 803 { | |
| 804 s = b->base->search(loc, ident, flags); | |
| 805 if (s == this) // happens if s is nested in this and derives from this | |
| 806 s = NULL; | |
| 807 else if (s) | |
| 808 break; | |
| 809 } | |
| 810 } | |
| 811 } | |
| 812 } | |
| 813 return s; | |
| 814 } | |
| 815 | |
| 816 /********************************************************** | |
| 817 * fd is in the vtbl[] for this class. | |
| 818 * Return 1 if function is hidden (not findable through search). | |
| 819 */ | |
| 820 | |
| 336 | 821 #if DMDV2 |
| 159 | 822 int isf(void *param, FuncDeclaration *fd) |
| 823 { | |
| 824 //printf("param = %p, fd = %p %s\n", param, fd, fd->toChars()); | |
| 825 return param == fd; | |
| 826 } | |
| 827 | |
| 828 int ClassDeclaration::isFuncHidden(FuncDeclaration *fd) | |
| 829 { | |
| 830 //printf("ClassDeclaration::isFuncHidden(%s)\n", fd->toChars()); | |
| 831 Dsymbol *s = search(0, fd->ident, 4|2); | |
| 832 if (!s) | |
| 833 { //printf("not found\n"); | |
| 834 /* Because, due to a hack, if there are multiple definitions | |
| 835 * of fd->ident, NULL is returned. | |
| 836 */ | |
| 837 return 0; | |
| 838 } | |
| 839 FuncDeclaration *fdstart = s->toAlias()->isFuncDeclaration(); | |
| 840 //printf("%s fdstart = %p\n", s->kind(), fdstart); | |
| 841 return !overloadApply(fdstart, &isf, fd); | |
| 842 } | |
| 843 #endif | |
| 844 | |
| 845 /**************** | |
| 846 * Find virtual function matching identifier and type. | |
| 847 * Used to build virtual function tables for interface implementations. | |
| 848 */ | |
| 849 | |
| 850 FuncDeclaration *ClassDeclaration::findFunc(Identifier *ident, TypeFunction *tf) | |
| 851 { | |
| 852 //printf("ClassDeclaration::findFunc(%s, %s) %s\n", ident->toChars(), tf->toChars(), toChars()); | |
| 853 | |
| 854 ClassDeclaration *cd = this; | |
| 855 Array *vtbl = &cd->vtbl; | |
| 856 while (1) | |
| 857 { | |
| 858 for (size_t i = 0; i < vtbl->dim; i++) | |
| 859 { | |
| 860 FuncDeclaration *fd = (FuncDeclaration *)vtbl->data[i]; | |
| 861 | |
| 862 //printf("\t[%d] = %s\n", i, fd->toChars()); | |
| 863 if (ident == fd->ident && | |
| 864 //tf->equals(fd->type) | |
| 865 fd->type->covariant(tf) == 1 | |
| 866 ) | |
| 867 { //printf("\t\tfound\n"); | |
| 868 return fd; | |
| 869 } | |
| 870 //else printf("\t\t%d\n", fd->type->covariant(tf)); | |
| 871 } | |
| 872 if (!cd) | |
| 873 break; | |
| 874 vtbl = &cd->vtblFinal; | |
| 875 cd = cd->baseClass; | |
| 876 } | |
| 877 | |
| 878 return NULL; | |
| 879 } | |
| 880 | |
| 881 void ClassDeclaration::interfaceSemantic(Scope *sc) | |
| 336 | 882 { |
| 159 | 883 vtblInterfaces = new BaseClasses(); |
| 884 vtblInterfaces->reserve(interfaces_dim); | |
| 885 | |
| 336 | 886 for (size_t i = 0; i < interfaces_dim; i++) |
| 159 | 887 { |
| 888 BaseClass *b = interfaces[i]; | |
| 889 | |
| 890 // If this is an interface, and it derives from a COM interface, | |
| 891 // then this is a COM interface too. | |
| 892 if (b->base->isCOMinterface()) | |
| 893 com = 1; | |
| 894 | |
| 895 vtblInterfaces->push(b); | |
| 896 b->copyBaseInterfaces(vtblInterfaces); | |
| 897 } | |
| 898 } | |
| 899 | |
| 900 /**************************************** | |
| 901 */ | |
| 902 | |
| 903 int ClassDeclaration::isCOMclass() | |
| 904 { | |
| 905 return com; | |
| 906 } | |
| 907 | |
| 908 int ClassDeclaration::isCOMinterface() | |
| 909 { | |
| 910 return 0; | |
| 911 } | |
| 912 | |
| 913 | |
| 914 /**************************************** | |
| 915 */ | |
| 916 | |
| 917 int ClassDeclaration::isAbstract() | |
| 918 { | |
| 919 if (isabstract) | |
| 920 return TRUE; | |
| 921 for (int i = 1; i < vtbl.dim; i++) | |
| 922 { | |
| 923 FuncDeclaration *fd = ((Dsymbol *)vtbl.data[i])->isFuncDeclaration(); | |
| 924 | |
| 925 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 926 if (!fd || fd->isAbstract()) | |
| 927 { | |
| 928 isabstract |= 1; | |
| 929 return TRUE; | |
| 930 } | |
| 931 } | |
| 932 return FALSE; | |
| 933 } | |
| 934 | |
| 336 | 935 |
| 159 | 936 /**************************************** |
| 937 * Returns !=0 if there's an extra member which is the 'this' | |
| 938 * pointer to the enclosing context (enclosing class or function) | |
| 939 */ | |
| 940 | |
| 941 int ClassDeclaration::isNested() | |
| 942 { | |
| 943 return isnested; | |
| 944 } | |
| 945 | |
| 946 /**************************************** | |
| 947 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 948 * For class objects, yes, this is where the classinfo ptr goes. | |
| 949 * For COM interfaces, no. | |
| 950 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 951 */ | |
| 952 | |
| 953 int ClassDeclaration::vtblOffset() | |
| 954 { | |
| 955 return 1; | |
| 956 } | |
| 957 | |
| 958 /**************************************** | |
| 959 */ | |
| 960 | |
| 336 | 961 const char *ClassDeclaration::kind() |
| 159 | 962 { |
| 963 return "class"; | |
| 964 } | |
| 965 | |
| 966 /**************************************** | |
| 967 */ | |
| 968 | |
| 969 void ClassDeclaration::addLocalClass(ClassDeclarations *aclasses) | |
| 970 { | |
| 971 aclasses->push(this); | |
| 972 } | |
| 973 | |
| 974 /********************************* InterfaceDeclaration ****************************/ | |
| 975 | |
| 976 InterfaceDeclaration::InterfaceDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses) | |
| 977 : ClassDeclaration(loc, id, baseclasses) | |
| 978 { | |
| 979 com = 0; | |
| 980 if (id == Id::IUnknown) // IUnknown is the root of all COM objects | |
| 981 com = 1; | |
| 982 } | |
| 983 | |
| 984 Dsymbol *InterfaceDeclaration::syntaxCopy(Dsymbol *s) | |
| 985 { | |
| 986 InterfaceDeclaration *id; | |
| 987 | |
| 988 if (s) | |
| 989 id = (InterfaceDeclaration *)s; | |
| 990 else | |
| 991 id = new InterfaceDeclaration(loc, ident, NULL); | |
| 992 | |
| 993 ClassDeclaration::syntaxCopy(id); | |
| 994 return id; | |
| 995 } | |
| 996 | |
| 997 void InterfaceDeclaration::semantic(Scope *sc) | |
| 998 { int i; | |
| 999 | |
| 1000 //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1001 if (inuse) | |
| 1002 return; | |
| 1003 if (!scope) | |
| 1004 { type = type->semantic(loc, sc); | |
| 1005 handle = handle->semantic(loc, sc); | |
| 1006 } | |
| 1007 if (!members) // if forward reference | |
| 1008 { //printf("\tinterface '%s' is forward referenced\n", toChars()); | |
| 1009 return; | |
| 1010 } | |
| 1011 if (symtab) // if already done | |
| 1012 { if (!scope) | |
| 1013 return; | |
| 1014 } | |
| 1015 else | |
| 1016 symtab = new DsymbolTable(); | |
| 1017 | |
| 1018 Scope *scx = NULL; | |
| 1019 if (scope) | |
| 1020 { sc = scope; | |
| 1021 scx = scope; // save so we don't make redundant copies | |
| 1022 scope = NULL; | |
| 1023 } | |
| 1024 | |
| 1025 if (sc->stc & STCdeprecated) | |
| 1026 { | |
| 1027 isdeprecated = 1; | |
| 1028 } | |
| 1029 | |
| 1030 // Expand any tuples in baseclasses[] | |
| 1031 for (i = 0; i < baseclasses.dim; ) | |
| 1032 { BaseClass *b = (BaseClass *)baseclasses.data[0]; | |
| 1033 b->type = b->type->semantic(loc, sc); | |
| 1034 Type *tb = b->type->toBasetype(); | |
| 1035 | |
| 1036 if (tb->ty == Ttuple) | |
| 1037 { TypeTuple *tup = (TypeTuple *)tb; | |
| 1038 enum PROT protection = b->protection; | |
| 1039 baseclasses.remove(i); | |
| 1040 size_t dim = Argument::dim(tup->arguments); | |
| 1041 for (size_t j = 0; j < dim; j++) | |
| 1042 { Argument *arg = Argument::getNth(tup->arguments, j); | |
| 1043 b = new BaseClass(arg->type, protection); | |
| 1044 baseclasses.insert(i + j, b); | |
| 1045 } | |
| 1046 } | |
| 1047 else | |
| 1048 i++; | |
| 1049 } | |
| 1050 | |
| 1051 // Check for errors, handle forward references | |
| 1052 for (i = 0; i < baseclasses.dim; ) | |
| 1053 { TypeClass *tc; | |
| 1054 BaseClass *b; | |
| 1055 Type *tb; | |
| 1056 | |
| 1057 b = (BaseClass *)baseclasses.data[i]; | |
| 1058 b->type = b->type->semantic(loc, sc); | |
| 1059 tb = b->type->toBasetype(); | |
| 1060 if (tb->ty == Tclass) | |
| 1061 tc = (TypeClass *)tb; | |
| 1062 else | |
| 1063 tc = NULL; | |
| 1064 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 1065 { | |
| 1066 error("base type must be interface, not %s", b->type->toChars()); | |
| 1067 baseclasses.remove(i); | |
| 1068 continue; | |
| 1069 } | |
| 1070 else | |
| 1071 { | |
| 1072 // Check for duplicate interfaces | |
| 1073 for (size_t j = 0; j < i; j++) | |
| 1074 { | |
| 1075 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 1076 if (b2->base == tc->sym) | |
| 1077 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 1078 } | |
| 1079 | |
| 1080 b->base = tc->sym; | |
| 1081 if (b->base == this || isBaseOf2(b->base)) | |
| 1082 { | |
| 1083 error("circular inheritance of interface"); | |
| 1084 baseclasses.remove(i); | |
| 1085 continue; | |
| 1086 } | |
| 1087 if (!b->base->symtab || b->base->scope || b->base->inuse) | |
| 1088 { | |
| 1089 //error("forward reference of base class %s", baseClass->toChars()); | |
| 1090 // Forward reference of base, try again later | |
| 1091 //printf("\ttry later, forward reference of base %s\n", b->base->toChars()); | |
| 1092 scope = scx ? scx : new Scope(*sc); | |
| 1093 scope->setNoFree(); | |
| 1094 scope->module->addDeferredSemantic(this); | |
| 1095 return; | |
| 1096 } | |
| 1097 } | |
| 1098 i++; | |
| 1099 } | |
| 1100 | |
| 1101 interfaces_dim = baseclasses.dim; | |
| 1102 interfaces = (BaseClass **)baseclasses.data; | |
| 1103 | |
| 1104 interfaceSemantic(sc); | |
| 1105 | |
| 1106 if (vtblOffset()) | |
| 1107 vtbl.push(this); // leave room at vtbl[0] for classinfo | |
| 1108 | |
| 1109 // Cat together the vtbl[]'s from base interfaces | |
| 1110 for (i = 0; i < interfaces_dim; i++) | |
| 1111 { BaseClass *b = interfaces[i]; | |
| 1112 | |
| 1113 // Skip if b has already appeared | |
| 1114 for (int k = 0; k < i; k++) | |
| 1115 { | |
| 1116 if (b == interfaces[i]) | |
| 1117 goto Lcontinue; | |
| 1118 } | |
| 1119 | |
| 1120 // Copy vtbl[] from base class | |
| 1121 if (b->base->vtblOffset()) | |
| 1122 { int d = b->base->vtbl.dim; | |
| 1123 if (d > 1) | |
| 1124 { | |
| 1125 vtbl.reserve(d - 1); | |
| 1126 for (int j = 1; j < d; j++) | |
| 1127 vtbl.push(b->base->vtbl.data[j]); | |
| 1128 } | |
| 1129 } | |
| 1130 else | |
| 1131 { | |
| 1132 vtbl.append(&b->base->vtbl); | |
| 1133 } | |
| 1134 | |
| 1135 Lcontinue: | |
| 1136 ; | |
| 1137 } | |
| 1138 | |
| 1139 for (i = 0; i < members->dim; i++) | |
| 1140 { | |
| 1141 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1142 s->addMember(sc, this, 1); | |
| 1143 } | |
| 1144 | |
| 1145 sc = sc->push(this); | |
| 1146 sc->parent = this; | |
| 1147 if (isCOMinterface()) | |
| 1148 sc->linkage = LINKwindows; | |
| 1149 sc->structalign = 8; | |
| 1150 structalign = sc->structalign; | |
|
809
69a5e4a6fc0f
Changed some hardcoded offset/alignment for classes in DMD, broke offsets for 64bits.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
658
diff
changeset
|
1151 sc->offset = 2*PTRSIZE; |
| 159 | 1152 inuse++; |
| 1153 for (i = 0; i < members->dim; i++) | |
| 1154 { | |
| 1155 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1156 s->semantic(sc); | |
| 1157 } | |
| 1158 inuse--; | |
| 1159 //members->print(); | |
| 1160 sc->pop(); | |
| 1161 //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1162 } | |
| 1163 | |
| 1164 | |
| 1165 /******************************************* | |
| 1166 * Determine if 'this' is a base class of cd. | |
| 1167 * (Actually, if it is an interface supported by cd) | |
| 1168 * Output: | |
| 1169 * *poffset offset to start of class | |
| 1170 * OFFSET_RUNTIME must determine offset at runtime | |
| 1171 * Returns: | |
| 1172 * 0 not a base | |
| 1173 * 1 is a base | |
| 1174 */ | |
| 1175 | |
| 1176 int InterfaceDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 1177 { | |
| 1178 unsigned j; | |
| 1179 | |
| 1180 //printf("%s.InterfaceDeclaration::isBaseOf(cd = '%s')\n", toChars(), cd->toChars()); | |
| 1181 assert(!baseClass); | |
| 1182 for (j = 0; j < cd->interfaces_dim; j++) | |
| 1183 { | |
| 1184 BaseClass *b = cd->interfaces[j]; | |
| 1185 | |
| 1186 //printf("\tbase %s\n", b->base->toChars()); | |
| 1187 if (this == b->base) | |
| 1188 { | |
| 1189 //printf("\tfound at offset %d\n", b->offset); | |
| 1190 if (poffset) | |
| 1191 { *poffset = b->offset; | |
| 1192 if (j && cd->isInterfaceDeclaration()) | |
| 1193 *poffset = OFFSET_RUNTIME; | |
| 1194 } | |
| 1195 return 1; | |
| 1196 } | |
| 1197 if (isBaseOf(b, poffset)) | |
| 1198 { if (j && poffset && cd->isInterfaceDeclaration()) | |
| 1199 *poffset = OFFSET_RUNTIME; | |
| 1200 return 1; | |
| 1201 } | |
| 1202 } | |
| 1203 | |
| 1204 if (cd->baseClass && isBaseOf(cd->baseClass, poffset)) | |
| 1205 return 1; | |
| 1206 | |
| 1207 if (poffset) | |
| 1208 *poffset = 0; | |
| 1209 return 0; | |
| 1210 } | |
| 1211 | |
| 1212 | |
| 1213 int InterfaceDeclaration::isBaseOf(BaseClass *bc, int *poffset) | |
| 1214 { | |
| 1215 //printf("%s.InterfaceDeclaration::isBaseOf(bc = '%s')\n", toChars(), bc->base->toChars()); | |
| 1216 for (unsigned j = 0; j < bc->baseInterfaces_dim; j++) | |
| 1217 { | |
| 1218 BaseClass *b = &bc->baseInterfaces[j]; | |
| 1219 | |
| 1220 if (this == b->base) | |
| 1221 { | |
| 1222 if (poffset) | |
| 1223 { *poffset = b->offset; | |
| 1224 } | |
| 1225 return 1; | |
| 1226 } | |
| 1227 if (isBaseOf(b, poffset)) | |
| 1228 { | |
| 1229 return 1; | |
| 1230 } | |
| 1231 } | |
| 1232 if (poffset) | |
| 1233 *poffset = 0; | |
| 1234 return 0; | |
| 1235 } | |
| 1236 | |
| 1237 /**************************************** | |
| 1238 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 1239 * For class objects, yes, this is where the ClassInfo ptr goes. | |
| 1240 * For COM interfaces, no. | |
| 1241 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 1242 */ | |
| 1243 | |
| 1244 int InterfaceDeclaration::vtblOffset() | |
| 1245 { | |
| 1246 if (isCOMinterface()) | |
| 1247 return 0; | |
| 1248 return 1; | |
| 1249 } | |
| 1250 | |
| 1251 int InterfaceDeclaration::isCOMinterface() | |
| 1252 { | |
| 1253 return com; | |
| 1254 } | |
| 1255 | |
| 1256 /******************************************* | |
| 1257 */ | |
| 1258 | |
| 336 | 1259 const char *InterfaceDeclaration::kind() |
| 159 | 1260 { |
| 1261 return "interface"; | |
| 1262 } | |
| 1263 | |
| 1264 | |
| 1265 /******************************** BaseClass *****************************/ | |
| 1266 | |
| 1267 BaseClass::BaseClass() | |
| 1268 { | |
| 1269 memset(this, 0, sizeof(BaseClass)); | |
| 1270 } | |
| 1271 | |
| 1272 BaseClass::BaseClass(Type *type, enum PROT protection) | |
| 1273 { | |
| 1274 //printf("BaseClass(this = %p, '%s')\n", this, type->toChars()); | |
| 1275 this->type = type; | |
| 1276 this->protection = protection; | |
| 1277 base = NULL; | |
| 1278 offset = 0; | |
| 1279 | |
| 1280 baseInterfaces_dim = 0; | |
| 1281 baseInterfaces = NULL; | |
| 1282 } | |
| 1283 | |
| 1284 /**************************************** | |
| 1285 * Fill in vtbl[] for base class based on member functions of class cd. | |
| 1286 * Input: | |
| 1287 * vtbl if !=NULL, fill it in | |
| 1288 * newinstance !=0 means all entries must be filled in by members | |
| 1289 * of cd, not members of any base classes of cd. | |
| 1290 * Returns: | |
| 1291 * !=0 if any entries were filled in by members of cd (not exclusively | |
| 1292 * by base classes) | |
| 1293 */ | |
| 1294 | |
| 1295 int BaseClass::fillVtbl(ClassDeclaration *cd, Array *vtbl, int newinstance) | |
| 1296 { | |
| 1297 ClassDeclaration *id = base; | |
| 1298 int j; | |
| 1299 int result = 0; | |
| 1300 | |
| 1301 //printf("BaseClass::fillVtbl(this='%s', cd='%s')\n", base->toChars(), cd->toChars()); | |
| 1302 if (vtbl) | |
| 1303 vtbl->setDim(base->vtbl.dim); | |
| 1304 | |
| 1305 // first entry is ClassInfo reference | |
| 1306 for (j = base->vtblOffset(); j < base->vtbl.dim; j++) | |
| 1307 { | |
| 1308 FuncDeclaration *ifd = ((Dsymbol *)base->vtbl.data[j])->isFuncDeclaration(); | |
| 1309 FuncDeclaration *fd; | |
| 1310 TypeFunction *tf; | |
| 1311 | |
| 1312 //printf(" vtbl[%d] is '%s'\n", j, ifd ? ifd->toChars() : "null"); | |
| 1313 | |
| 1314 assert(ifd); | |
| 1315 // Find corresponding function in this class | |
| 1316 tf = (ifd->type->ty == Tfunction) ? (TypeFunction *)(ifd->type) : NULL; | |
| 1317 fd = cd->findFunc(ifd->ident, tf); | |
| 1318 if (fd && !fd->isAbstract()) | |
| 1319 { | |
| 1320 //printf(" found\n"); | |
| 1321 // Check that calling conventions match | |
| 1322 if (fd->linkage != ifd->linkage) | |
| 1323 fd->error("linkage doesn't match interface function"); | |
| 1324 | |
| 1325 // Check that it is current | |
| 1326 if (newinstance && | |
| 1327 fd->toParent() != cd && | |
| 1328 ifd->toParent() == base) | |
| 1329 cd->error("interface function %s.%s is not implemented", | |
| 1330 id->toChars(), ifd->ident->toChars()); | |
| 1331 | |
| 1332 if (fd->toParent() == cd) | |
| 1333 result = 1; | |
| 1334 } | |
| 1335 else | |
| 1336 { | |
| 1337 //printf(" not found\n"); | |
| 1338 // BUG: should mark this class as abstract? | |
| 1339 if (!cd->isAbstract()) | |
| 1340 cd->error("interface function %s.%s isn't implemented", | |
| 1341 id->toChars(), ifd->ident->toChars()); | |
| 1342 fd = NULL; | |
| 1343 } | |
| 1344 if (vtbl) | |
| 1345 vtbl->data[j] = fd; | |
| 1346 } | |
| 1347 | |
| 1348 return result; | |
| 1349 } | |
| 1350 | |
| 1351 void BaseClass::copyBaseInterfaces(BaseClasses *vtblInterfaces) | |
| 1352 { | |
| 1353 //printf("+copyBaseInterfaces(), %s\n", base->toChars()); | |
| 1354 // if (baseInterfaces_dim) | |
| 1355 // return; | |
| 1356 | |
| 1357 baseInterfaces_dim = base->interfaces_dim; | |
| 1358 baseInterfaces = (BaseClass *)mem.calloc(baseInterfaces_dim, sizeof(BaseClass)); | |
| 1359 | |
| 1360 //printf("%s.copyBaseInterfaces()\n", base->toChars()); | |
| 1361 for (int i = 0; i < baseInterfaces_dim; i++) | |
| 1362 { | |
| 1363 BaseClass *b = &baseInterfaces[i]; | |
| 1364 BaseClass *b2 = base->interfaces[i]; | |
| 1365 | |
| 1366 assert(b2->vtbl.dim == 0); // should not be filled yet | |
| 1367 memcpy(b, b2, sizeof(BaseClass)); | |
| 1368 | |
| 1369 if (i) // single inheritance is i==0 | |
| 1370 vtblInterfaces->push(b); // only need for M.I. | |
| 1371 b->copyBaseInterfaces(vtblInterfaces); | |
| 1372 } | |
| 1373 //printf("-copyBaseInterfaces\n"); | |
| 1374 } |