Mercurial > projects > ldc
annotate dmd/class.c @ 1183:df386fd4030e
Commit requested by lindquist.
| author | Frits van Bommel <fvbommel wxs.nl> |
|---|---|
| date | Tue, 31 Mar 2009 03:06:19 +0200 |
| parents | 1860414bf3b7 |
| children | e961851fb8be |
| 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" | |
|
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16 #include "rmem.h" |
| 159 | 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 | |
|
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60 #if IN_DMD |
| 159 | 61 vtblsym = NULL; |
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62 #endif |
| 159 | 63 vclassinfo = NULL; |
| 64 | |
| 65 if (id) | |
| 66 { // Look for special class names | |
| 67 | |
| 68 if (id == Id::__sizeof || id == Id::alignof || id == Id::mangleof) | |
| 69 error("illegal class name"); | |
| 70 | |
| 71 // BUG: What if this is the wrong TypeInfo, i.e. it is nested? | |
| 72 if (id->toChars()[0] == 'T') | |
| 73 { | |
| 74 if (id == Id::TypeInfo) | |
| 75 { if (Type::typeinfo) | |
| 76 Type::typeinfo->error("%s", msg); | |
| 77 Type::typeinfo = this; | |
| 78 } | |
| 79 | |
| 80 if (id == Id::TypeInfo_Class) | |
| 81 { if (Type::typeinfoclass) | |
| 82 Type::typeinfoclass->error("%s", msg); | |
| 83 Type::typeinfoclass = this; | |
| 84 } | |
| 85 | |
| 86 if (id == Id::TypeInfo_Interface) | |
| 87 { if (Type::typeinfointerface) | |
| 88 Type::typeinfointerface->error("%s", msg); | |
| 89 Type::typeinfointerface = this; | |
| 90 } | |
| 91 | |
| 92 if (id == Id::TypeInfo_Struct) | |
| 93 { if (Type::typeinfostruct) | |
| 94 Type::typeinfostruct->error("%s", msg); | |
| 95 Type::typeinfostruct = this; | |
| 96 } | |
| 97 | |
| 98 if (id == Id::TypeInfo_Typedef) | |
| 99 { if (Type::typeinfotypedef) | |
| 100 Type::typeinfotypedef->error("%s", msg); | |
| 101 Type::typeinfotypedef = this; | |
| 102 } | |
| 103 | |
| 104 if (id == Id::TypeInfo_Pointer) | |
| 105 { if (Type::typeinfopointer) | |
| 106 Type::typeinfopointer->error("%s", msg); | |
| 107 Type::typeinfopointer = this; | |
| 108 } | |
| 109 | |
| 110 if (id == Id::TypeInfo_Array) | |
| 111 { if (Type::typeinfoarray) | |
| 112 Type::typeinfoarray->error("%s", msg); | |
| 113 Type::typeinfoarray = this; | |
| 114 } | |
| 115 | |
| 116 if (id == Id::TypeInfo_StaticArray) | |
| 117 { //if (Type::typeinfostaticarray) | |
| 118 //Type::typeinfostaticarray->error("%s", msg); | |
| 119 Type::typeinfostaticarray = this; | |
| 120 } | |
| 121 | |
| 122 if (id == Id::TypeInfo_AssociativeArray) | |
| 123 { if (Type::typeinfoassociativearray) | |
| 124 Type::typeinfoassociativearray->error("%s", msg); | |
| 125 Type::typeinfoassociativearray = this; | |
| 126 } | |
| 127 | |
| 128 if (id == Id::TypeInfo_Enum) | |
| 129 { if (Type::typeinfoenum) | |
| 130 Type::typeinfoenum->error("%s", msg); | |
| 131 Type::typeinfoenum = this; | |
| 132 } | |
| 133 | |
| 134 if (id == Id::TypeInfo_Function) | |
| 135 { if (Type::typeinfofunction) | |
| 136 Type::typeinfofunction->error("%s", msg); | |
| 137 Type::typeinfofunction = this; | |
| 138 } | |
| 139 | |
| 140 if (id == Id::TypeInfo_Delegate) | |
| 141 { if (Type::typeinfodelegate) | |
| 142 Type::typeinfodelegate->error("%s", msg); | |
| 143 Type::typeinfodelegate = this; | |
| 144 } | |
| 145 | |
| 146 if (id == Id::TypeInfo_Tuple) | |
| 147 { if (Type::typeinfotypelist) | |
| 148 Type::typeinfotypelist->error("%s", msg); | |
| 149 Type::typeinfotypelist = this; | |
| 150 } | |
| 151 | |
| 336 | 152 #if DMDV2 |
| 159 | 153 if (id == Id::TypeInfo_Const) |
| 154 { if (Type::typeinfoconst) | |
| 155 Type::typeinfoconst->error("%s", msg); | |
| 156 Type::typeinfoconst = this; | |
| 157 } | |
| 158 | |
| 159 if (id == Id::TypeInfo_Invariant) | |
| 160 { if (Type::typeinfoinvariant) | |
| 161 Type::typeinfoinvariant->error("%s", msg); | |
| 162 Type::typeinfoinvariant = this; | |
| 163 } | |
| 164 #endif | |
| 165 } | |
| 166 | |
| 167 if (id == Id::Object) | |
| 168 { if (object) | |
| 169 object->error("%s", msg); | |
| 170 object = this; | |
| 171 } | |
| 172 | |
| 173 if (id == Id::ClassInfo) | |
| 174 { if (classinfo) | |
| 175 classinfo->error("%s", msg); | |
| 176 classinfo = this; | |
| 177 } | |
| 178 | |
| 179 if (id == Id::ModuleInfo) | |
| 180 { if (Module::moduleinfo) | |
| 181 Module::moduleinfo->error("%s", msg); | |
| 182 Module::moduleinfo = this; | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 com = 0; | |
| 187 isauto = 0; | |
| 188 isabstract = 0; | |
| 189 isnested = 0; | |
| 190 vthis = NULL; | |
| 191 inuse = 0; | |
| 192 } | |
| 193 | |
| 194 Dsymbol *ClassDeclaration::syntaxCopy(Dsymbol *s) | |
| 195 { | |
| 196 ClassDeclaration *cd; | |
| 197 | |
| 198 //printf("ClassDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 199 if (s) | |
| 200 cd = (ClassDeclaration *)s; | |
| 201 else | |
| 202 cd = new ClassDeclaration(loc, ident, NULL); | |
| 203 | |
| 204 cd->storage_class |= storage_class; | |
| 205 | |
| 206 cd->baseclasses.setDim(this->baseclasses.dim); | |
| 207 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 208 { | |
| 209 BaseClass *b = (BaseClass *)this->baseclasses.data[i]; | |
| 210 BaseClass *b2 = new BaseClass(b->type->syntaxCopy(), b->protection); | |
| 211 cd->baseclasses.data[i] = b2; | |
| 212 } | |
| 213 | |
| 214 ScopeDsymbol::syntaxCopy(cd); | |
| 215 return cd; | |
| 216 } | |
| 217 | |
| 218 void ClassDeclaration::semantic(Scope *sc) | |
| 219 { int i; | |
| 220 unsigned offset; | |
| 221 | |
| 222 //printf("ClassDeclaration::semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 223 //printf("\tparent = %p, '%s'\n", sc->parent, sc->parent ? sc->parent->toChars() : ""); | |
| 224 //printf("sc->stc = %x\n", sc->stc); | |
| 225 | |
| 226 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 227 | |
| 228 if (!ident) // if anonymous class | |
| 229 { char *id = "__anonclass"; | |
| 230 | |
| 231 ident = Identifier::generateId(id); | |
| 232 } | |
| 233 | |
| 234 if (!scope) | |
| 235 { | |
| 236 if (!parent && sc->parent && !sc->parent->isModule()) | |
| 237 parent = sc->parent; | |
| 238 | |
| 239 type = type->semantic(loc, sc); | |
| 240 handle = handle->semantic(loc, sc); | |
| 241 } | |
| 242 if (!members) // if forward reference | |
| 243 { //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 244 return; | |
| 245 } | |
| 246 if (symtab) | |
| 247 { if (!scope) | |
| 248 { //printf("\tsemantic for '%s' is already completed\n", toChars()); | |
| 249 return; // semantic() already completed | |
| 250 } | |
| 251 } | |
| 252 else | |
| 253 symtab = new DsymbolTable(); | |
| 254 | |
| 255 Scope *scx = NULL; | |
| 256 if (scope) | |
| 257 { sc = scope; | |
| 258 scx = scope; // save so we don't make redundant copies | |
| 259 scope = NULL; | |
| 260 } | |
| 261 #ifdef IN_GCC | |
| 262 methods.setDim(0); | |
| 263 #endif | |
| 264 | |
| 265 if (sc->stc & STCdeprecated) | |
| 336 | 266 { |
| 159 | 267 isdeprecated = 1; |
| 268 } | |
| 269 | |
| 270 // Expand any tuples in baseclasses[] | |
| 271 for (i = 0; i < baseclasses.dim; ) | |
| 272 { BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 273 b->type = b->type->semantic(loc, sc); | |
| 274 Type *tb = b->type->toBasetype(); | |
| 275 | |
| 276 if (tb->ty == Ttuple) | |
| 277 { TypeTuple *tup = (TypeTuple *)tb; | |
| 278 enum PROT protection = b->protection; | |
| 279 baseclasses.remove(i); | |
| 280 size_t dim = Argument::dim(tup->arguments); | |
| 281 for (size_t j = 0; j < dim; j++) | |
| 282 { Argument *arg = Argument::getNth(tup->arguments, j); | |
| 283 b = new BaseClass(arg->type, protection); | |
| 284 baseclasses.insert(i + j, b); | |
| 285 } | |
| 286 } | |
| 287 else | |
| 288 i++; | |
| 289 } | |
| 290 | |
| 291 // See if there's a base class as first in baseclasses[] | |
| 292 if (baseclasses.dim) | |
| 293 { TypeClass *tc; | |
| 294 BaseClass *b; | |
| 295 Type *tb; | |
| 296 | |
| 297 b = (BaseClass *)baseclasses.data[0]; | |
| 298 //b->type = b->type->semantic(loc, sc); | |
| 299 tb = b->type->toBasetype(); | |
| 300 if (tb->ty != Tclass) | |
| 301 { error("base type must be class or interface, not %s", b->type->toChars()); | |
| 302 baseclasses.remove(0); | |
| 303 } | |
| 304 else | |
| 305 { | |
| 306 tc = (TypeClass *)(tb); | |
| 336 | 307 |
| 159 | 308 if (tc->sym->isDeprecated()) |
| 309 { | |
| 310 if (!isDeprecated()) | |
| 311 { | |
| 312 // Deriving from deprecated class makes this one deprecated too | |
| 313 isdeprecated = 1; | |
| 314 | |
| 315 tc->checkDeprecated(loc, sc); | |
| 316 } | |
| 317 } | |
| 318 | |
| 319 if (tc->sym->isInterfaceDeclaration()) | |
| 320 ; | |
| 321 else | |
| 322 { | |
| 323 for (ClassDeclaration *cdb = tc->sym; cdb; cdb = cdb->baseClass) | |
| 324 { | |
| 325 if (cdb == this) | |
| 326 { | |
| 327 error("circular inheritance"); | |
| 328 baseclasses.remove(0); | |
| 329 goto L7; | |
| 330 } | |
| 331 } | |
| 332 if (!tc->sym->symtab || tc->sym->scope || tc->sym->sizeok == 0) | |
| 333 { | |
| 334 //error("forward reference of base class %s", baseClass->toChars()); | |
| 335 // Forward reference of base class, try again later | |
| 336 //printf("\ttry later, forward reference of base class %s\n", tc->sym->toChars()); | |
| 337 scope = scx ? scx : new Scope(*sc); | |
| 338 scope->setNoFree(); | |
| 339 scope->module->addDeferredSemantic(this); | |
| 340 return; | |
| 341 } | |
| 342 else | |
| 343 { baseClass = tc->sym; | |
| 344 b->base = baseClass; | |
| 345 } | |
| 346 L7: ; | |
| 347 } | |
| 348 } | |
| 349 } | |
| 350 | |
| 351 // Treat the remaining entries in baseclasses as interfaces | |
| 352 // Check for errors, handle forward references | |
| 353 for (i = (baseClass ? 1 : 0); i < baseclasses.dim; ) | |
| 354 { TypeClass *tc; | |
| 355 BaseClass *b; | |
| 356 Type *tb; | |
| 357 | |
| 358 b = (BaseClass *)baseclasses.data[i]; | |
| 359 b->type = b->type->semantic(loc, sc); | |
| 360 tb = b->type->toBasetype(); | |
| 361 if (tb->ty == Tclass) | |
| 362 tc = (TypeClass *)tb; | |
| 363 else | |
| 364 tc = NULL; | |
| 365 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 366 { | |
| 367 error("base type must be interface, not %s", b->type->toChars()); | |
| 368 baseclasses.remove(i); | |
| 369 continue; | |
| 370 } | |
| 371 else | |
| 372 { | |
| 373 if (tc->sym->isDeprecated()) | |
| 374 { | |
| 375 if (!isDeprecated()) | |
| 376 { | |
| 377 // Deriving from deprecated class makes this one deprecated too | |
| 378 isdeprecated = 1; | |
| 379 | |
| 380 tc->checkDeprecated(loc, sc); | |
| 381 } | |
| 382 } | |
| 383 | |
| 384 // Check for duplicate interfaces | |
| 385 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 386 { | |
| 387 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 388 if (b2->base == tc->sym) | |
| 389 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 390 } | |
| 391 | |
| 392 b->base = tc->sym; | |
| 393 if (!b->base->symtab || b->base->scope) | |
| 394 { | |
| 395 //error("forward reference of base class %s", baseClass->toChars()); | |
| 396 // Forward reference of base, try again later | |
| 397 //printf("\ttry later, forward reference of base %s\n", baseClass->toChars()); | |
| 398 scope = scx ? scx : new Scope(*sc); | |
| 399 scope->setNoFree(); | |
| 400 scope->module->addDeferredSemantic(this); | |
| 401 return; | |
| 402 } | |
| 403 } | |
| 404 i++; | |
| 405 } | |
| 406 | |
| 407 | |
| 408 // If no base class, and this is not an Object, use Object as base class | |
| 409 if (!baseClass && ident != Id::Object) | |
| 410 { | |
| 411 // BUG: what if Object is redefined in an inner scope? | |
| 412 Type *tbase = new TypeIdentifier(0, Id::Object); | |
| 413 BaseClass *b; | |
| 414 TypeClass *tc; | |
| 415 Type *bt; | |
| 416 | |
| 417 if (!object) | |
| 418 { | |
| 419 error("missing or corrupt object.d"); | |
| 420 fatal(); | |
| 421 } | |
| 422 bt = tbase->semantic(loc, sc)->toBasetype(); | |
| 423 b = new BaseClass(bt, PROTpublic); | |
| 424 baseclasses.shift(b); | |
| 425 assert(b->type->ty == Tclass); | |
| 426 tc = (TypeClass *)(b->type); | |
| 427 baseClass = tc->sym; | |
| 428 assert(!baseClass->isInterfaceDeclaration()); | |
| 429 b->base = baseClass; | |
| 430 } | |
| 431 | |
| 432 interfaces_dim = baseclasses.dim; | |
| 433 interfaces = (BaseClass **)baseclasses.data; | |
| 434 | |
| 435 | |
| 436 if (baseClass) | |
| 437 { | |
| 438 if (baseClass->storage_class & STCfinal) | |
| 439 error("cannot inherit from final class %s", baseClass->toChars()); | |
| 440 | |
| 441 interfaces_dim--; | |
| 442 interfaces++; | |
| 443 | |
| 444 // Copy vtbl[] from base class | |
| 445 vtbl.setDim(baseClass->vtbl.dim); | |
| 446 memcpy(vtbl.data, baseClass->vtbl.data, sizeof(void *) * vtbl.dim); | |
| 447 | |
| 448 // Inherit properties from base class | |
| 449 com = baseClass->isCOMclass(); | |
| 450 isauto = baseClass->isauto; | |
| 451 vthis = baseClass->vthis; | |
| 452 } | |
| 453 else | |
| 454 { | |
| 455 // No base class, so this is the root of the class hierarchy | |
| 456 vtbl.setDim(0); | |
| 457 vtbl.push(this); // leave room for classinfo as first member | |
| 458 } | |
| 459 | |
| 460 protection = sc->protection; | |
| 461 storage_class |= sc->stc; | |
| 462 | |
| 463 if (sizeok == 0) | |
| 464 { | |
| 465 interfaceSemantic(sc); | |
| 466 | |
| 467 for (i = 0; i < members->dim; i++) | |
| 468 { | |
| 469 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 470 s->addMember(sc, this, 1); | |
| 471 } | |
| 472 | |
| 473 /* If this is a nested class, add the hidden 'this' | |
| 474 * member which is a pointer to the enclosing scope. | |
| 475 */ | |
| 476 if (vthis) // if inheriting from nested class | |
| 477 { // Use the base class's 'this' member | |
| 478 isnested = 1; | |
| 479 if (storage_class & STCstatic) | |
| 480 error("static class cannot inherit from nested class %s", baseClass->toChars()); | |
| 481 if (toParent2() != baseClass->toParent2()) | |
|
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482 { |
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483 if (toParent2()) |
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484 { |
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485 error("is nested within %s, but super class %s is nested within %s", |
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486 toParent2()->toChars(), |
| 159 | 487 baseClass->toChars(), |
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488 baseClass->toParent2()->toChars()); |
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489 } |
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490 else |
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491 { |
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492 error("is not nested, but super class %s is nested within %s", |
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493 baseClass->toChars(), |
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494 baseClass->toParent2()->toChars()); |
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495 } |
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496 isnested = 0; |
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497 } |
| 159 | 498 } |
| 499 else if (!(storage_class & STCstatic)) | |
| 500 { Dsymbol *s = toParent2(); | |
| 501 if (s) | |
| 502 { | |
| 503 ClassDeclaration *cd = s->isClassDeclaration(); | |
| 504 FuncDeclaration *fd = s->isFuncDeclaration(); | |
| 505 | |
| 506 | |
| 507 if (cd || fd) | |
| 508 { isnested = 1; | |
| 509 Type *t; | |
| 510 if (cd) | |
| 511 t = cd->type; | |
| 512 else if (fd) | |
| 513 { AggregateDeclaration *ad = fd->isMember2(); | |
| 514 if (ad) | |
| 515 t = ad->handle; | |
| 516 else | |
| 517 { | |
| 518 t = new TypePointer(Type::tvoid); | |
| 519 t = t->semantic(0, sc); | |
| 520 } | |
| 521 } | |
| 522 else | |
| 523 assert(0); | |
| 524 assert(!vthis); | |
| 525 vthis = new ThisDeclaration(t); | |
| 526 members->push(vthis); | |
| 527 } | |
| 528 } | |
| 529 } | |
| 530 } | |
| 531 | |
| 532 if (storage_class & (STCauto | STCscope)) | |
| 533 isauto = 1; | |
| 534 if (storage_class & STCabstract) | |
| 535 isabstract = 1; | |
| 536 | |
| 537 sc = sc->push(this); | |
| 538 sc->stc &= ~(STCfinal | STCauto | STCscope | STCstatic | | |
| 539 STCabstract | STCdeprecated); | |
| 540 sc->parent = this; | |
| 541 sc->inunion = 0; | |
| 542 | |
| 543 if (isCOMclass()) | |
|
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544 { |
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545 #if _WIN32 |
| 159 | 546 sc->linkage = LINKwindows; |
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547 #else |
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548 /* This enables us to use COM objects under Linux and |
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549 * work with things like XPCOM |
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550 */ |
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551 sc->linkage = LINKc; |
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552 #endif |
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553 } |
| 159 | 554 sc->protection = PROTpublic; |
| 555 sc->explicitProtection = 0; | |
| 556 sc->structalign = 8; | |
| 557 structalign = sc->structalign; | |
| 558 if (baseClass) | |
| 559 { sc->offset = baseClass->structsize; | |
| 560 alignsize = baseClass->alignsize; | |
| 561 // if (isnested) | |
| 562 // sc->offset += PTRSIZE; // room for uplevel context pointer | |
| 563 } | |
| 564 else | |
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565 { sc->offset = 2*PTRSIZE; // allow room for vptr[] and monitor |
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566 alignsize = PTRSIZE; |
| 159 | 567 } |
| 568 structsize = sc->offset; | |
| 569 Scope scsave = *sc; | |
| 570 int members_dim = members->dim; | |
| 571 sizeok = 0; | |
| 572 for (i = 0; i < members_dim; i++) | |
| 573 { | |
| 574 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 575 s->semantic(sc); | |
| 576 } | |
| 577 | |
| 578 if (sizeok == 2) | |
| 579 { // semantic() failed because of forward references. | |
| 580 // Unwind what we did, and defer it for later | |
| 581 fields.setDim(0); | |
| 582 structsize = 0; | |
| 583 alignsize = 0; | |
| 584 structalign = 0; | |
| 585 | |
| 586 sc = sc->pop(); | |
| 587 | |
| 588 scope = scx ? scx : new Scope(*sc); | |
| 589 scope->setNoFree(); | |
| 590 scope->module->addDeferredSemantic(this); | |
| 591 | |
| 336 | 592 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); |
| 159 | 593 return; |
| 594 } | |
| 595 | |
| 596 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 597 | |
| 598 structsize = sc->offset; | |
| 599 //members->print(); | |
| 600 | |
| 601 /* Look for special member functions. | |
| 602 * They must be in this class, not in a base class. | |
| 603 */ | |
| 604 ctor = (CtorDeclaration *)search(0, Id::ctor, 0); | |
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605 if (ctor && (ctor->toParent() != this || !ctor->isCtorDeclaration())) |
| 159 | 606 ctor = NULL; |
| 607 | |
| 608 // dtor = (DtorDeclaration *)search(Id::dtor, 0); | |
| 609 // if (dtor && dtor->toParent() != this) | |
| 610 // dtor = NULL; | |
| 611 | |
| 612 // inv = (InvariantDeclaration *)search(Id::classInvariant, 0); | |
| 613 // if (inv && inv->toParent() != this) | |
| 614 // inv = NULL; | |
| 615 | |
| 616 // Can be in base class | |
| 617 aggNew = (NewDeclaration *)search(0, Id::classNew, 0); | |
| 618 aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0); | |
| 619 | |
| 620 // If this class has no constructor, but base class does, create | |
| 621 // a constructor: | |
| 622 // this() { } | |
| 623 if (!ctor && baseClass && baseClass->ctor) | |
| 624 { | |
| 625 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 336 | 626 ctor = new CtorDeclaration(loc, 0, NULL, 0); |
| 159 | 627 ctor->fbody = new CompoundStatement(0, new Statements()); |
| 628 members->push(ctor); | |
| 629 ctor->addMember(sc, this, 1); | |
| 630 *sc = scsave; // why? What about sc->nofree? | |
| 631 sc->offset = structsize; | |
| 632 ctor->semantic(sc); | |
| 633 defaultCtor = ctor; | |
| 634 } | |
| 635 | |
| 636 #if 0 | |
| 637 if (baseClass) | |
| 638 { if (!aggDelete) | |
| 639 aggDelete = baseClass->aggDelete; | |
| 640 if (!aggNew) | |
| 641 aggNew = baseClass->aggNew; | |
| 642 } | |
| 643 #endif | |
| 644 | |
| 645 // Allocate instance of each new interface | |
| 646 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 647 { | |
| 648 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 649 unsigned thissize = PTRSIZE; | |
| 650 | |
| 651 alignmember(structalign, thissize, &sc->offset); | |
| 652 assert(b->offset == 0); | |
| 653 b->offset = sc->offset; | |
| 654 | |
| 655 // Take care of single inheritance offsets | |
| 656 while (b->baseInterfaces_dim) | |
| 657 { | |
| 658 b = &b->baseInterfaces[0]; | |
| 659 b->offset = sc->offset; | |
| 660 } | |
| 661 | |
| 662 sc->offset += thissize; | |
| 663 if (alignsize < thissize) | |
| 664 alignsize = thissize; | |
| 665 } | |
| 666 structsize = sc->offset; | |
| 667 sizeok = 1; | |
| 668 Module::dprogress++; | |
| 669 | |
| 670 dtor = buildDtor(sc); | |
| 671 | |
| 672 sc->pop(); | |
| 673 | |
| 674 #if 0 // Do not call until toObjfile() because of forward references | |
| 675 // Fill in base class vtbl[]s | |
| 676 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 677 { | |
| 678 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 679 | |
| 680 //b->fillVtbl(this, &b->vtbl, 1); | |
| 681 } | |
| 682 #endif | |
| 683 //printf("-ClassDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 684 } | |
| 685 | |
| 686 void ClassDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 687 { | |
| 688 if (!isAnonymous()) | |
| 689 { | |
| 690 buf->printf("%s ", kind()); | |
| 691 buf->writestring(toChars()); | |
| 692 if (baseclasses.dim) | |
| 693 buf->writestring(" : "); | |
| 694 } | |
| 695 for (int i = 0; i < baseclasses.dim; i++) | |
| 696 { | |
| 697 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 698 | |
| 699 if (i) | |
| 700 buf->writeByte(','); | |
| 701 //buf->writestring(b->base->ident->toChars()); | |
| 702 b->type->toCBuffer(buf, NULL, hgs); | |
| 703 } | |
| 704 buf->writenl(); | |
| 705 buf->writeByte('{'); | |
| 706 buf->writenl(); | |
| 707 for (int i = 0; i < members->dim; i++) | |
| 708 { | |
| 709 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 710 | |
| 711 buf->writestring(" "); | |
| 712 s->toCBuffer(buf, hgs); | |
| 713 } | |
| 714 buf->writestring("}"); | |
| 715 buf->writenl(); | |
| 716 } | |
| 717 | |
| 718 #if 0 | |
| 719 void ClassDeclaration::defineRef(Dsymbol *s) | |
| 720 { | |
| 721 ClassDeclaration *cd; | |
| 722 | |
| 723 AggregateDeclaration::defineRef(s); | |
| 724 cd = s->isClassDeclaration(); | |
| 725 baseType = cd->baseType; | |
| 726 cd->baseType = NULL; | |
| 727 } | |
| 728 #endif | |
| 729 | |
| 730 /********************************************* | |
| 731 * Determine if 'this' is a base class of cd. | |
| 732 * This is used to detect circular inheritance only. | |
| 733 */ | |
| 734 | |
| 735 int ClassDeclaration::isBaseOf2(ClassDeclaration *cd) | |
| 736 { | |
| 737 if (!cd) | |
| 738 return 0; | |
| 739 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 740 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 741 { BaseClass *b = (BaseClass *)cd->baseclasses.data[i]; | |
| 742 | |
| 743 if (b->base == this || isBaseOf2(b->base)) | |
| 744 return 1; | |
| 745 } | |
| 746 return 0; | |
| 747 } | |
| 748 | |
| 749 /******************************************* | |
| 750 * Determine if 'this' is a base class of cd. | |
| 751 */ | |
| 752 | |
| 753 int ClassDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 754 { | |
| 755 //printf("ClassDeclaration::isBaseOf(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 756 if (poffset) | |
| 757 *poffset = 0; | |
| 758 while (cd) | |
| 759 { | |
| 760 if (this == cd->baseClass) | |
| 761 return 1; | |
| 762 | |
| 763 /* cd->baseClass might not be set if cd is forward referenced. | |
| 764 */ | |
| 765 if (!cd->baseClass && cd->baseclasses.dim && !cd->isInterfaceDeclaration()) | |
| 766 { | |
| 767 cd->error("base class is forward referenced by %s", toChars()); | |
| 768 } | |
| 769 | |
| 770 cd = cd->baseClass; | |
| 771 } | |
| 772 return 0; | |
| 773 } | |
| 774 | |
| 775 Dsymbol *ClassDeclaration::search(Loc loc, Identifier *ident, int flags) | |
| 776 { | |
| 777 Dsymbol *s; | |
| 778 | |
| 779 //printf("%s.ClassDeclaration::search('%s')\n", toChars(), ident->toChars()); | |
| 780 if (scope) | |
| 781 semantic(scope); | |
| 782 | |
| 783 if (!members || !symtab || scope) | |
| 784 { error("is forward referenced when looking for '%s'", ident->toChars()); | |
| 785 //*(char*)0=0; | |
| 786 return NULL; | |
| 787 } | |
| 788 | |
| 789 s = ScopeDsymbol::search(loc, ident, flags); | |
| 790 if (!s) | |
| 791 { | |
| 792 // Search bases classes in depth-first, left to right order | |
| 793 | |
| 794 int i; | |
| 795 | |
| 796 for (i = 0; i < baseclasses.dim; i++) | |
| 797 { | |
| 798 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 799 | |
| 800 if (b->base) | |
| 801 { | |
| 802 if (!b->base->symtab) | |
| 803 error("base %s is forward referenced", b->base->ident->toChars()); | |
| 804 else | |
| 805 { | |
| 806 s = b->base->search(loc, ident, flags); | |
| 807 if (s == this) // happens if s is nested in this and derives from this | |
| 808 s = NULL; | |
| 809 else if (s) | |
| 810 break; | |
| 811 } | |
| 812 } | |
| 813 } | |
| 814 } | |
| 815 return s; | |
| 816 } | |
| 817 | |
| 818 /********************************************************** | |
| 819 * fd is in the vtbl[] for this class. | |
| 820 * Return 1 if function is hidden (not findable through search). | |
| 821 */ | |
| 822 | |
| 336 | 823 #if DMDV2 |
| 159 | 824 int isf(void *param, FuncDeclaration *fd) |
| 825 { | |
| 826 //printf("param = %p, fd = %p %s\n", param, fd, fd->toChars()); | |
| 827 return param == fd; | |
| 828 } | |
| 829 | |
| 830 int ClassDeclaration::isFuncHidden(FuncDeclaration *fd) | |
| 831 { | |
| 832 //printf("ClassDeclaration::isFuncHidden(%s)\n", fd->toChars()); | |
| 833 Dsymbol *s = search(0, fd->ident, 4|2); | |
| 834 if (!s) | |
| 835 { //printf("not found\n"); | |
| 836 /* Because, due to a hack, if there are multiple definitions | |
| 837 * of fd->ident, NULL is returned. | |
| 838 */ | |
| 839 return 0; | |
| 840 } | |
| 841 FuncDeclaration *fdstart = s->toAlias()->isFuncDeclaration(); | |
| 842 //printf("%s fdstart = %p\n", s->kind(), fdstart); | |
| 843 return !overloadApply(fdstart, &isf, fd); | |
| 844 } | |
| 845 #endif | |
| 846 | |
| 847 /**************** | |
| 848 * Find virtual function matching identifier and type. | |
| 849 * Used to build virtual function tables for interface implementations. | |
| 850 */ | |
| 851 | |
| 852 FuncDeclaration *ClassDeclaration::findFunc(Identifier *ident, TypeFunction *tf) | |
| 853 { | |
| 854 //printf("ClassDeclaration::findFunc(%s, %s) %s\n", ident->toChars(), tf->toChars(), toChars()); | |
| 855 | |
| 856 ClassDeclaration *cd = this; | |
| 857 Array *vtbl = &cd->vtbl; | |
| 858 while (1) | |
| 859 { | |
| 860 for (size_t i = 0; i < vtbl->dim; i++) | |
| 861 { | |
|
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862 FuncDeclaration *fd = ((Dsymbol*)vtbl->data[i])->isFuncDeclaration(); |
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863 if (!fd) |
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864 continue; // the first entry might be a ClassInfo |
| 159 | 865 |
| 866 //printf("\t[%d] = %s\n", i, fd->toChars()); | |
| 867 if (ident == fd->ident && | |
| 868 //tf->equals(fd->type) | |
| 869 fd->type->covariant(tf) == 1 | |
| 870 ) | |
| 871 { //printf("\t\tfound\n"); | |
| 872 return fd; | |
| 873 } | |
| 874 //else printf("\t\t%d\n", fd->type->covariant(tf)); | |
| 875 } | |
| 876 if (!cd) | |
| 877 break; | |
| 878 vtbl = &cd->vtblFinal; | |
| 879 cd = cd->baseClass; | |
| 880 } | |
| 881 | |
| 882 return NULL; | |
| 883 } | |
| 884 | |
| 885 void ClassDeclaration::interfaceSemantic(Scope *sc) | |
| 336 | 886 { |
| 159 | 887 vtblInterfaces = new BaseClasses(); |
| 888 vtblInterfaces->reserve(interfaces_dim); | |
| 889 | |
| 336 | 890 for (size_t i = 0; i < interfaces_dim; i++) |
| 159 | 891 { |
| 892 BaseClass *b = interfaces[i]; | |
| 893 | |
| 894 // If this is an interface, and it derives from a COM interface, | |
| 895 // then this is a COM interface too. | |
| 896 if (b->base->isCOMinterface()) | |
| 897 com = 1; | |
| 898 | |
| 899 vtblInterfaces->push(b); | |
| 900 b->copyBaseInterfaces(vtblInterfaces); | |
| 901 } | |
| 902 } | |
| 903 | |
| 904 /**************************************** | |
| 905 */ | |
| 906 | |
| 907 int ClassDeclaration::isCOMclass() | |
| 908 { | |
| 909 return com; | |
| 910 } | |
| 911 | |
| 912 int ClassDeclaration::isCOMinterface() | |
| 913 { | |
| 914 return 0; | |
| 915 } | |
| 916 | |
| 917 | |
| 918 /**************************************** | |
| 919 */ | |
| 920 | |
| 921 int ClassDeclaration::isAbstract() | |
| 922 { | |
| 923 if (isabstract) | |
| 924 return TRUE; | |
| 925 for (int i = 1; i < vtbl.dim; i++) | |
| 926 { | |
| 927 FuncDeclaration *fd = ((Dsymbol *)vtbl.data[i])->isFuncDeclaration(); | |
| 928 | |
| 929 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 930 if (!fd || fd->isAbstract()) | |
| 931 { | |
| 932 isabstract |= 1; | |
| 933 return TRUE; | |
| 934 } | |
| 935 } | |
| 936 return FALSE; | |
| 937 } | |
| 938 | |
| 336 | 939 |
| 159 | 940 /**************************************** |
| 941 * Returns !=0 if there's an extra member which is the 'this' | |
| 942 * pointer to the enclosing context (enclosing class or function) | |
| 943 */ | |
| 944 | |
| 945 int ClassDeclaration::isNested() | |
| 946 { | |
| 947 return isnested; | |
| 948 } | |
| 949 | |
| 950 /**************************************** | |
| 951 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 952 * For class objects, yes, this is where the classinfo ptr goes. | |
| 953 * For COM interfaces, no. | |
| 954 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 955 */ | |
| 956 | |
| 957 int ClassDeclaration::vtblOffset() | |
| 958 { | |
| 959 return 1; | |
| 960 } | |
| 961 | |
| 962 /**************************************** | |
| 963 */ | |
| 964 | |
| 336 | 965 const char *ClassDeclaration::kind() |
| 159 | 966 { |
| 967 return "class"; | |
| 968 } | |
| 969 | |
| 970 /**************************************** | |
| 971 */ | |
| 972 | |
| 973 void ClassDeclaration::addLocalClass(ClassDeclarations *aclasses) | |
| 974 { | |
| 975 aclasses->push(this); | |
| 976 } | |
| 977 | |
| 978 /********************************* InterfaceDeclaration ****************************/ | |
| 979 | |
| 980 InterfaceDeclaration::InterfaceDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses) | |
| 981 : ClassDeclaration(loc, id, baseclasses) | |
| 982 { | |
| 983 com = 0; | |
| 984 if (id == Id::IUnknown) // IUnknown is the root of all COM objects | |
| 985 com = 1; | |
| 986 } | |
| 987 | |
| 988 Dsymbol *InterfaceDeclaration::syntaxCopy(Dsymbol *s) | |
| 989 { | |
| 990 InterfaceDeclaration *id; | |
| 991 | |
| 992 if (s) | |
| 993 id = (InterfaceDeclaration *)s; | |
| 994 else | |
| 995 id = new InterfaceDeclaration(loc, ident, NULL); | |
| 996 | |
| 997 ClassDeclaration::syntaxCopy(id); | |
| 998 return id; | |
| 999 } | |
| 1000 | |
| 1001 void InterfaceDeclaration::semantic(Scope *sc) | |
| 1002 { int i; | |
| 1003 | |
| 1004 //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1005 if (inuse) | |
| 1006 return; | |
| 1007 if (!scope) | |
| 1008 { type = type->semantic(loc, sc); | |
| 1009 handle = handle->semantic(loc, sc); | |
| 1010 } | |
| 1011 if (!members) // if forward reference | |
| 1012 { //printf("\tinterface '%s' is forward referenced\n", toChars()); | |
| 1013 return; | |
| 1014 } | |
| 1015 if (symtab) // if already done | |
| 1016 { if (!scope) | |
| 1017 return; | |
| 1018 } | |
| 1019 else | |
| 1020 symtab = new DsymbolTable(); | |
| 1021 | |
| 1022 Scope *scx = NULL; | |
| 1023 if (scope) | |
| 1024 { sc = scope; | |
| 1025 scx = scope; // save so we don't make redundant copies | |
| 1026 scope = NULL; | |
| 1027 } | |
| 1028 | |
| 1029 if (sc->stc & STCdeprecated) | |
| 1030 { | |
| 1031 isdeprecated = 1; | |
| 1032 } | |
| 1033 | |
| 1034 // Expand any tuples in baseclasses[] | |
| 1035 for (i = 0; i < baseclasses.dim; ) | |
| 1036 { BaseClass *b = (BaseClass *)baseclasses.data[0]; | |
| 1037 b->type = b->type->semantic(loc, sc); | |
| 1038 Type *tb = b->type->toBasetype(); | |
| 1039 | |
| 1040 if (tb->ty == Ttuple) | |
| 1041 { TypeTuple *tup = (TypeTuple *)tb; | |
| 1042 enum PROT protection = b->protection; | |
| 1043 baseclasses.remove(i); | |
| 1044 size_t dim = Argument::dim(tup->arguments); | |
| 1045 for (size_t j = 0; j < dim; j++) | |
| 1046 { Argument *arg = Argument::getNth(tup->arguments, j); | |
| 1047 b = new BaseClass(arg->type, protection); | |
| 1048 baseclasses.insert(i + j, b); | |
| 1049 } | |
| 1050 } | |
| 1051 else | |
| 1052 i++; | |
| 1053 } | |
| 1054 | |
| 1055 // Check for errors, handle forward references | |
| 1056 for (i = 0; i < baseclasses.dim; ) | |
| 1057 { TypeClass *tc; | |
| 1058 BaseClass *b; | |
| 1059 Type *tb; | |
| 1060 | |
| 1061 b = (BaseClass *)baseclasses.data[i]; | |
| 1062 b->type = b->type->semantic(loc, sc); | |
| 1063 tb = b->type->toBasetype(); | |
| 1064 if (tb->ty == Tclass) | |
| 1065 tc = (TypeClass *)tb; | |
| 1066 else | |
| 1067 tc = NULL; | |
| 1068 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 1069 { | |
| 1070 error("base type must be interface, not %s", b->type->toChars()); | |
| 1071 baseclasses.remove(i); | |
| 1072 continue; | |
| 1073 } | |
| 1074 else | |
| 1075 { | |
| 1076 // Check for duplicate interfaces | |
| 1077 for (size_t j = 0; j < i; j++) | |
| 1078 { | |
| 1079 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 1080 if (b2->base == tc->sym) | |
| 1081 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 1082 } | |
| 1083 | |
| 1084 b->base = tc->sym; | |
| 1085 if (b->base == this || isBaseOf2(b->base)) | |
| 1086 { | |
| 1087 error("circular inheritance of interface"); | |
| 1088 baseclasses.remove(i); | |
| 1089 continue; | |
| 1090 } | |
| 1091 if (!b->base->symtab || b->base->scope || b->base->inuse) | |
| 1092 { | |
| 1093 //error("forward reference of base class %s", baseClass->toChars()); | |
| 1094 // Forward reference of base, try again later | |
| 1095 //printf("\ttry later, forward reference of base %s\n", b->base->toChars()); | |
| 1096 scope = scx ? scx : new Scope(*sc); | |
| 1097 scope->setNoFree(); | |
| 1098 scope->module->addDeferredSemantic(this); | |
| 1099 return; | |
| 1100 } | |
| 1101 } | |
| 1102 i++; | |
| 1103 } | |
| 1104 | |
| 1105 interfaces_dim = baseclasses.dim; | |
| 1106 interfaces = (BaseClass **)baseclasses.data; | |
| 1107 | |
| 1108 interfaceSemantic(sc); | |
| 1109 | |
| 1110 if (vtblOffset()) | |
| 1111 vtbl.push(this); // leave room at vtbl[0] for classinfo | |
| 1112 | |
| 1113 // Cat together the vtbl[]'s from base interfaces | |
| 1114 for (i = 0; i < interfaces_dim; i++) | |
| 1115 { BaseClass *b = interfaces[i]; | |
| 1116 | |
| 1117 // Skip if b has already appeared | |
| 1118 for (int k = 0; k < i; k++) | |
| 1119 { | |
| 1120 if (b == interfaces[i]) | |
| 1121 goto Lcontinue; | |
| 1122 } | |
| 1123 | |
| 1124 // Copy vtbl[] from base class | |
| 1125 if (b->base->vtblOffset()) | |
| 1126 { int d = b->base->vtbl.dim; | |
| 1127 if (d > 1) | |
| 1128 { | |
| 1129 vtbl.reserve(d - 1); | |
| 1130 for (int j = 1; j < d; j++) | |
| 1131 vtbl.push(b->base->vtbl.data[j]); | |
| 1132 } | |
| 1133 } | |
| 1134 else | |
| 1135 { | |
| 1136 vtbl.append(&b->base->vtbl); | |
| 1137 } | |
| 1138 | |
| 1139 Lcontinue: | |
| 1140 ; | |
| 1141 } | |
| 1142 | |
| 1143 for (i = 0; i < members->dim; i++) | |
| 1144 { | |
| 1145 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1146 s->addMember(sc, this, 1); | |
| 1147 } | |
| 1148 | |
| 1149 sc = sc->push(this); | |
| 1150 sc->parent = this; | |
| 1151 if (isCOMinterface()) | |
| 1152 sc->linkage = LINKwindows; | |
| 1153 sc->structalign = 8; | |
| 1154 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
|
1155 sc->offset = 2*PTRSIZE; |
| 159 | 1156 inuse++; |
| 1157 for (i = 0; i < members->dim; i++) | |
| 1158 { | |
| 1159 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1160 s->semantic(sc); | |
| 1161 } | |
| 1162 inuse--; | |
| 1163 //members->print(); | |
| 1164 sc->pop(); | |
| 1165 //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1166 } | |
| 1167 | |
| 1168 | |
| 1169 /******************************************* | |
| 1170 * Determine if 'this' is a base class of cd. | |
| 1171 * (Actually, if it is an interface supported by cd) | |
| 1172 * Output: | |
| 1173 * *poffset offset to start of class | |
| 1174 * OFFSET_RUNTIME must determine offset at runtime | |
| 1175 * Returns: | |
| 1176 * 0 not a base | |
| 1177 * 1 is a base | |
| 1178 */ | |
| 1179 | |
| 1180 int InterfaceDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 1181 { | |
| 1182 unsigned j; | |
| 1183 | |
| 1184 //printf("%s.InterfaceDeclaration::isBaseOf(cd = '%s')\n", toChars(), cd->toChars()); | |
| 1185 assert(!baseClass); | |
| 1186 for (j = 0; j < cd->interfaces_dim; j++) | |
| 1187 { | |
| 1188 BaseClass *b = cd->interfaces[j]; | |
| 1189 | |
| 1190 //printf("\tbase %s\n", b->base->toChars()); | |
| 1191 if (this == b->base) | |
| 1192 { | |
| 1193 //printf("\tfound at offset %d\n", b->offset); | |
| 1194 if (poffset) | |
| 1195 { *poffset = b->offset; | |
| 1196 if (j && cd->isInterfaceDeclaration()) | |
| 1197 *poffset = OFFSET_RUNTIME; | |
| 1198 } | |
| 1199 return 1; | |
| 1200 } | |
| 1201 if (isBaseOf(b, poffset)) | |
| 1202 { if (j && poffset && cd->isInterfaceDeclaration()) | |
| 1203 *poffset = OFFSET_RUNTIME; | |
| 1204 return 1; | |
| 1205 } | |
| 1206 } | |
| 1207 | |
| 1208 if (cd->baseClass && isBaseOf(cd->baseClass, poffset)) | |
| 1209 return 1; | |
| 1210 | |
| 1211 if (poffset) | |
| 1212 *poffset = 0; | |
| 1213 return 0; | |
| 1214 } | |
| 1215 | |
| 1216 | |
| 1217 int InterfaceDeclaration::isBaseOf(BaseClass *bc, int *poffset) | |
| 1218 { | |
| 1219 //printf("%s.InterfaceDeclaration::isBaseOf(bc = '%s')\n", toChars(), bc->base->toChars()); | |
| 1220 for (unsigned j = 0; j < bc->baseInterfaces_dim; j++) | |
| 1221 { | |
| 1222 BaseClass *b = &bc->baseInterfaces[j]; | |
| 1223 | |
| 1224 if (this == b->base) | |
| 1225 { | |
| 1226 if (poffset) | |
| 1227 { *poffset = b->offset; | |
| 1228 } | |
| 1229 return 1; | |
| 1230 } | |
| 1231 if (isBaseOf(b, poffset)) | |
| 1232 { | |
| 1233 return 1; | |
| 1234 } | |
| 1235 } | |
| 1236 if (poffset) | |
| 1237 *poffset = 0; | |
| 1238 return 0; | |
| 1239 } | |
| 1240 | |
| 1241 /**************************************** | |
| 1242 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 1243 * For class objects, yes, this is where the ClassInfo ptr goes. | |
| 1244 * For COM interfaces, no. | |
| 1245 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 1246 */ | |
| 1247 | |
| 1248 int InterfaceDeclaration::vtblOffset() | |
| 1249 { | |
| 1250 if (isCOMinterface()) | |
| 1251 return 0; | |
| 1252 return 1; | |
| 1253 } | |
| 1254 | |
| 1255 int InterfaceDeclaration::isCOMinterface() | |
| 1256 { | |
| 1257 return com; | |
| 1258 } | |
| 1259 | |
| 1260 /******************************************* | |
| 1261 */ | |
| 1262 | |
| 336 | 1263 const char *InterfaceDeclaration::kind() |
| 159 | 1264 { |
| 1265 return "interface"; | |
| 1266 } | |
| 1267 | |
| 1268 | |
| 1269 /******************************** BaseClass *****************************/ | |
| 1270 | |
| 1271 BaseClass::BaseClass() | |
| 1272 { | |
| 1273 memset(this, 0, sizeof(BaseClass)); | |
| 1274 } | |
| 1275 | |
| 1276 BaseClass::BaseClass(Type *type, enum PROT protection) | |
| 1277 { | |
| 1278 //printf("BaseClass(this = %p, '%s')\n", this, type->toChars()); | |
| 1279 this->type = type; | |
| 1280 this->protection = protection; | |
| 1281 base = NULL; | |
| 1282 offset = 0; | |
| 1283 | |
| 1284 baseInterfaces_dim = 0; | |
| 1285 baseInterfaces = NULL; | |
| 1286 } | |
| 1287 | |
| 1288 /**************************************** | |
| 1289 * Fill in vtbl[] for base class based on member functions of class cd. | |
| 1290 * Input: | |
| 1291 * vtbl if !=NULL, fill it in | |
| 1292 * newinstance !=0 means all entries must be filled in by members | |
| 1293 * of cd, not members of any base classes of cd. | |
| 1294 * Returns: | |
| 1295 * !=0 if any entries were filled in by members of cd (not exclusively | |
| 1296 * by base classes) | |
| 1297 */ | |
| 1298 | |
| 1299 int BaseClass::fillVtbl(ClassDeclaration *cd, Array *vtbl, int newinstance) | |
| 1300 { | |
| 1301 ClassDeclaration *id = base; | |
| 1302 int j; | |
| 1303 int result = 0; | |
| 1304 | |
| 1305 //printf("BaseClass::fillVtbl(this='%s', cd='%s')\n", base->toChars(), cd->toChars()); | |
| 1306 if (vtbl) | |
| 1307 vtbl->setDim(base->vtbl.dim); | |
| 1308 | |
| 1309 // first entry is ClassInfo reference | |
| 1310 for (j = base->vtblOffset(); j < base->vtbl.dim; j++) | |
| 1311 { | |
| 1312 FuncDeclaration *ifd = ((Dsymbol *)base->vtbl.data[j])->isFuncDeclaration(); | |
| 1313 FuncDeclaration *fd; | |
| 1314 TypeFunction *tf; | |
| 1315 | |
| 1316 //printf(" vtbl[%d] is '%s'\n", j, ifd ? ifd->toChars() : "null"); | |
| 1317 | |
| 1318 assert(ifd); | |
| 1319 // Find corresponding function in this class | |
| 1320 tf = (ifd->type->ty == Tfunction) ? (TypeFunction *)(ifd->type) : NULL; | |
| 1321 fd = cd->findFunc(ifd->ident, tf); | |
| 1322 if (fd && !fd->isAbstract()) | |
| 1323 { | |
| 1324 //printf(" found\n"); | |
| 1325 // Check that calling conventions match | |
| 1326 if (fd->linkage != ifd->linkage) | |
| 1327 fd->error("linkage doesn't match interface function"); | |
| 1328 | |
| 1329 // Check that it is current | |
| 1330 if (newinstance && | |
| 1331 fd->toParent() != cd && | |
| 1332 ifd->toParent() == base) | |
| 1333 cd->error("interface function %s.%s is not implemented", | |
| 1334 id->toChars(), ifd->ident->toChars()); | |
| 1335 | |
| 1336 if (fd->toParent() == cd) | |
| 1337 result = 1; | |
| 1338 } | |
| 1339 else | |
| 1340 { | |
| 1341 //printf(" not found\n"); | |
| 1342 // BUG: should mark this class as abstract? | |
| 1343 if (!cd->isAbstract()) | |
| 1344 cd->error("interface function %s.%s isn't implemented", | |
| 1345 id->toChars(), ifd->ident->toChars()); | |
| 1346 fd = NULL; | |
| 1347 } | |
| 1348 if (vtbl) | |
| 1349 vtbl->data[j] = fd; | |
| 1350 } | |
| 1351 | |
| 1352 return result; | |
| 1353 } | |
| 1354 | |
| 1355 void BaseClass::copyBaseInterfaces(BaseClasses *vtblInterfaces) | |
| 1356 { | |
| 1357 //printf("+copyBaseInterfaces(), %s\n", base->toChars()); | |
| 1358 // if (baseInterfaces_dim) | |
| 1359 // return; | |
| 1360 | |
| 1361 baseInterfaces_dim = base->interfaces_dim; | |
| 1362 baseInterfaces = (BaseClass *)mem.calloc(baseInterfaces_dim, sizeof(BaseClass)); | |
| 1363 | |
| 1364 //printf("%s.copyBaseInterfaces()\n", base->toChars()); | |
| 1365 for (int i = 0; i < baseInterfaces_dim; i++) | |
| 1366 { | |
| 1367 BaseClass *b = &baseInterfaces[i]; | |
| 1368 BaseClass *b2 = base->interfaces[i]; | |
| 1369 | |
| 1370 assert(b2->vtbl.dim == 0); // should not be filled yet | |
| 1371 memcpy(b, b2, sizeof(BaseClass)); | |
| 1372 | |
| 1373 if (i) // single inheritance is i==0 | |
| 1374 vtblInterfaces->push(b); // only need for M.I. | |
| 1375 b->copyBaseInterfaces(vtblInterfaces); | |
| 1376 } | |
| 1377 //printf("-copyBaseInterfaces\n"); | |
| 1378 } |