Mercurial > projects > ldc
annotate dmd/class.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 |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 1587 | 3 // Copyright (c) 1999-2009 by Digital Mars |
| 159 | 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 } | |
| 1587 | 164 |
| 165 if (id == Id::TypeInfo_Shared) | |
| 166 { if (Type::typeinfoshared) | |
| 167 Type::typeinfoshared->error("%s", msg); | |
| 168 Type::typeinfoshared = this; | |
| 169 } | |
| 159 | 170 #endif |
| 171 } | |
| 172 | |
| 173 if (id == Id::Object) | |
| 174 { if (object) | |
| 175 object->error("%s", msg); | |
| 176 object = this; | |
| 177 } | |
| 178 | |
| 179 if (id == Id::ClassInfo) | |
| 180 { if (classinfo) | |
| 181 classinfo->error("%s", msg); | |
| 182 classinfo = this; | |
| 183 } | |
| 184 | |
| 185 if (id == Id::ModuleInfo) | |
| 186 { if (Module::moduleinfo) | |
| 187 Module::moduleinfo->error("%s", msg); | |
| 188 Module::moduleinfo = this; | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 com = 0; | |
|
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193 isscope = 0; |
| 159 | 194 isabstract = 0; |
| 195 isnested = 0; | |
| 196 vthis = NULL; | |
| 197 inuse = 0; | |
| 198 } | |
| 199 | |
| 200 Dsymbol *ClassDeclaration::syntaxCopy(Dsymbol *s) | |
| 201 { | |
| 202 ClassDeclaration *cd; | |
| 203 | |
| 204 //printf("ClassDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 205 if (s) | |
| 206 cd = (ClassDeclaration *)s; | |
| 207 else | |
| 208 cd = new ClassDeclaration(loc, ident, NULL); | |
| 209 | |
| 210 cd->storage_class |= storage_class; | |
| 211 | |
| 212 cd->baseclasses.setDim(this->baseclasses.dim); | |
| 213 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 214 { | |
| 215 BaseClass *b = (BaseClass *)this->baseclasses.data[i]; | |
| 216 BaseClass *b2 = new BaseClass(b->type->syntaxCopy(), b->protection); | |
| 217 cd->baseclasses.data[i] = b2; | |
| 218 } | |
| 219 | |
| 220 ScopeDsymbol::syntaxCopy(cd); | |
| 221 return cd; | |
| 222 } | |
| 223 | |
| 224 void ClassDeclaration::semantic(Scope *sc) | |
| 225 { int i; | |
| 226 unsigned offset; | |
| 227 | |
| 228 //printf("ClassDeclaration::semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 229 //printf("\tparent = %p, '%s'\n", sc->parent, sc->parent ? sc->parent->toChars() : ""); | |
| 230 //printf("sc->stc = %x\n", sc->stc); | |
| 231 | |
| 232 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 233 | |
| 234 if (!ident) // if anonymous class | |
| 1587 | 235 { const char *id = "__anonclass"; |
| 159 | 236 |
| 237 ident = Identifier::generateId(id); | |
| 238 } | |
| 239 | |
| 1587 | 240 if (!sc) |
| 241 sc = scope; | |
| 242 if (!parent && sc->parent && !sc->parent->isModule()) | |
| 243 parent = sc->parent; | |
| 159 | 244 |
| 1587 | 245 type = type->semantic(loc, sc); |
| 246 handle = type; | |
| 247 | |
| 159 | 248 if (!members) // if forward reference |
| 249 { //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 250 return; | |
| 251 } | |
| 252 if (symtab) | |
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253 { if (sizeok == 1 || !scope) |
| 159 | 254 { //printf("\tsemantic for '%s' is already completed\n", toChars()); |
| 255 return; // semantic() already completed | |
| 256 } | |
| 257 } | |
| 258 else | |
| 259 symtab = new DsymbolTable(); | |
| 260 | |
| 261 Scope *scx = NULL; | |
| 262 if (scope) | |
| 263 { sc = scope; | |
| 264 scx = scope; // save so we don't make redundant copies | |
| 265 scope = NULL; | |
| 266 } | |
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267 unsigned dprogress_save = Module::dprogress; |
| 159 | 268 #ifdef IN_GCC |
| 269 methods.setDim(0); | |
| 270 #endif | |
| 271 | |
| 272 if (sc->stc & STCdeprecated) | |
| 336 | 273 { |
| 159 | 274 isdeprecated = 1; |
| 275 } | |
| 276 | |
| 277 // Expand any tuples in baseclasses[] | |
| 278 for (i = 0; i < baseclasses.dim; ) | |
| 279 { BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 280 b->type = b->type->semantic(loc, sc); | |
| 281 Type *tb = b->type->toBasetype(); | |
| 282 | |
| 283 if (tb->ty == Ttuple) | |
| 284 { TypeTuple *tup = (TypeTuple *)tb; | |
| 285 enum PROT protection = b->protection; | |
| 286 baseclasses.remove(i); | |
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287 size_t dim = Parameter::dim(tup->arguments); |
| 159 | 288 for (size_t j = 0; j < dim; j++) |
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289 { Parameter *arg = Parameter::getNth(tup->arguments, j); |
| 159 | 290 b = new BaseClass(arg->type, protection); |
| 291 baseclasses.insert(i + j, b); | |
| 292 } | |
| 293 } | |
| 294 else | |
| 295 i++; | |
| 296 } | |
| 297 | |
| 298 // See if there's a base class as first in baseclasses[] | |
| 299 if (baseclasses.dim) | |
| 300 { TypeClass *tc; | |
| 301 BaseClass *b; | |
| 302 Type *tb; | |
| 303 | |
| 304 b = (BaseClass *)baseclasses.data[0]; | |
| 305 //b->type = b->type->semantic(loc, sc); | |
| 306 tb = b->type->toBasetype(); | |
| 307 if (tb->ty != Tclass) | |
| 308 { error("base type must be class or interface, not %s", b->type->toChars()); | |
| 309 baseclasses.remove(0); | |
| 310 } | |
| 311 else | |
| 312 { | |
| 313 tc = (TypeClass *)(tb); | |
| 336 | 314 |
| 159 | 315 if (tc->sym->isDeprecated()) |
| 316 { | |
| 317 if (!isDeprecated()) | |
| 318 { | |
| 319 // Deriving from deprecated class makes this one deprecated too | |
| 320 isdeprecated = 1; | |
| 321 | |
| 322 tc->checkDeprecated(loc, sc); | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 if (tc->sym->isInterfaceDeclaration()) | |
| 327 ; | |
| 328 else | |
| 329 { | |
| 330 for (ClassDeclaration *cdb = tc->sym; cdb; cdb = cdb->baseClass) | |
| 331 { | |
| 332 if (cdb == this) | |
| 333 { | |
| 334 error("circular inheritance"); | |
| 335 baseclasses.remove(0); | |
| 336 goto L7; | |
| 337 } | |
| 338 } | |
| 1587 | 339 if (!tc->sym->symtab || tc->sym->sizeok == 0) |
| 340 { // Try to resolve forward reference | |
| 341 if (sc->mustsemantic && tc->sym->scope) | |
| 342 tc->sym->semantic(NULL); | |
| 343 } | |
| 159 | 344 if (!tc->sym->symtab || tc->sym->scope || tc->sym->sizeok == 0) |
| 345 { | |
| 1587 | 346 //printf("%s: forward reference of base class %s\n", toChars(), tc->sym->toChars()); |
| 159 | 347 //error("forward reference of base class %s", baseClass->toChars()); |
| 348 // Forward reference of base class, try again later | |
| 349 //printf("\ttry later, forward reference of base class %s\n", tc->sym->toChars()); | |
| 350 scope = scx ? scx : new Scope(*sc); | |
| 351 scope->setNoFree(); | |
| 1587 | 352 if (tc->sym->scope) |
| 353 tc->sym->scope->module->addDeferredSemantic(tc->sym); | |
| 159 | 354 scope->module->addDeferredSemantic(this); |
| 355 return; | |
| 356 } | |
| 357 else | |
| 358 { baseClass = tc->sym; | |
| 359 b->base = baseClass; | |
| 360 } | |
| 361 L7: ; | |
| 362 } | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 // Treat the remaining entries in baseclasses as interfaces | |
| 367 // Check for errors, handle forward references | |
| 368 for (i = (baseClass ? 1 : 0); i < baseclasses.dim; ) | |
| 369 { TypeClass *tc; | |
| 370 BaseClass *b; | |
| 371 Type *tb; | |
| 372 | |
| 373 b = (BaseClass *)baseclasses.data[i]; | |
| 374 b->type = b->type->semantic(loc, sc); | |
| 375 tb = b->type->toBasetype(); | |
| 376 if (tb->ty == Tclass) | |
| 377 tc = (TypeClass *)tb; | |
| 378 else | |
| 379 tc = NULL; | |
| 380 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 381 { | |
| 382 error("base type must be interface, not %s", b->type->toChars()); | |
| 383 baseclasses.remove(i); | |
| 384 continue; | |
| 385 } | |
| 386 else | |
| 387 { | |
| 388 if (tc->sym->isDeprecated()) | |
| 389 { | |
| 390 if (!isDeprecated()) | |
| 391 { | |
| 392 // Deriving from deprecated class makes this one deprecated too | |
| 393 isdeprecated = 1; | |
| 394 | |
| 395 tc->checkDeprecated(loc, sc); | |
| 396 } | |
| 397 } | |
| 398 | |
| 399 // Check for duplicate interfaces | |
| 400 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 401 { | |
| 402 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 403 if (b2->base == tc->sym) | |
| 404 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 405 } | |
| 406 | |
| 1587 | 407 if (!tc->sym->symtab) |
| 408 { // Try to resolve forward reference | |
| 409 if (sc->mustsemantic && tc->sym->scope) | |
| 410 tc->sym->semantic(NULL); | |
| 411 } | |
| 412 | |
| 159 | 413 b->base = tc->sym; |
| 414 if (!b->base->symtab || b->base->scope) | |
| 415 { | |
| 416 //error("forward reference of base class %s", baseClass->toChars()); | |
| 417 // Forward reference of base, try again later | |
| 418 //printf("\ttry later, forward reference of base %s\n", baseClass->toChars()); | |
| 419 scope = scx ? scx : new Scope(*sc); | |
| 420 scope->setNoFree(); | |
| 1587 | 421 if (tc->sym->scope) |
| 422 tc->sym->scope->module->addDeferredSemantic(tc->sym); | |
| 159 | 423 scope->module->addDeferredSemantic(this); |
| 424 return; | |
| 425 } | |
| 426 } | |
| 427 i++; | |
| 428 } | |
| 429 | |
| 430 | |
| 431 // If no base class, and this is not an Object, use Object as base class | |
| 432 if (!baseClass && ident != Id::Object) | |
| 433 { | |
| 434 // BUG: what if Object is redefined in an inner scope? | |
| 435 Type *tbase = new TypeIdentifier(0, Id::Object); | |
| 436 BaseClass *b; | |
| 437 TypeClass *tc; | |
| 438 Type *bt; | |
| 439 | |
| 440 if (!object) | |
| 441 { | |
| 442 error("missing or corrupt object.d"); | |
| 443 fatal(); | |
| 444 } | |
| 445 bt = tbase->semantic(loc, sc)->toBasetype(); | |
| 446 b = new BaseClass(bt, PROTpublic); | |
| 447 baseclasses.shift(b); | |
| 448 assert(b->type->ty == Tclass); | |
| 449 tc = (TypeClass *)(b->type); | |
| 450 baseClass = tc->sym; | |
| 451 assert(!baseClass->isInterfaceDeclaration()); | |
| 452 b->base = baseClass; | |
| 453 } | |
| 454 | |
| 455 interfaces_dim = baseclasses.dim; | |
| 456 interfaces = (BaseClass **)baseclasses.data; | |
| 457 | |
| 458 | |
| 459 if (baseClass) | |
| 460 { | |
| 461 if (baseClass->storage_class & STCfinal) | |
| 462 error("cannot inherit from final class %s", baseClass->toChars()); | |
| 463 | |
| 464 interfaces_dim--; | |
| 465 interfaces++; | |
| 466 | |
| 467 // Copy vtbl[] from base class | |
| 468 vtbl.setDim(baseClass->vtbl.dim); | |
| 469 memcpy(vtbl.data, baseClass->vtbl.data, sizeof(void *) * vtbl.dim); | |
| 470 | |
| 471 // Inherit properties from base class | |
| 472 com = baseClass->isCOMclass(); | |
|
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Make the auto storage class never have the same meaning as scope.
Christian Kamm <kamm incasoftware de>
parents:
1367
diff
changeset
|
473 isscope = baseClass->isscope; |
| 159 | 474 vthis = baseClass->vthis; |
| 475 } | |
| 476 else | |
| 477 { | |
| 478 // No base class, so this is the root of the class hierarchy | |
| 479 vtbl.setDim(0); | |
| 480 vtbl.push(this); // leave room for classinfo as first member | |
| 481 } | |
| 482 | |
| 483 protection = sc->protection; | |
| 484 storage_class |= sc->stc; | |
| 485 | |
| 486 if (sizeok == 0) | |
| 487 { | |
| 488 interfaceSemantic(sc); | |
| 489 | |
| 490 for (i = 0; i < members->dim; i++) | |
| 491 { | |
| 492 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 493 s->addMember(sc, this, 1); | |
| 494 } | |
| 495 | |
| 496 /* If this is a nested class, add the hidden 'this' | |
| 497 * member which is a pointer to the enclosing scope. | |
| 498 */ | |
| 499 if (vthis) // if inheriting from nested class | |
| 500 { // Use the base class's 'this' member | |
| 501 isnested = 1; | |
| 502 if (storage_class & STCstatic) | |
| 503 error("static class cannot inherit from nested class %s", baseClass->toChars()); | |
| 504 if (toParent2() != baseClass->toParent2()) | |
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505 { |
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506 if (toParent2()) |
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507 { |
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508 error("is nested within %s, but super class %s is nested within %s", |
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509 toParent2()->toChars(), |
| 159 | 510 baseClass->toChars(), |
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511 baseClass->toParent2()->toChars()); |
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512 } |
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513 else |
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514 { |
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515 error("is not nested, but super class %s is nested within %s", |
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516 baseClass->toChars(), |
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517 baseClass->toParent2()->toChars()); |
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518 } |
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519 isnested = 0; |
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520 } |
| 159 | 521 } |
| 522 else if (!(storage_class & STCstatic)) | |
| 523 { Dsymbol *s = toParent2(); | |
| 524 if (s) | |
| 525 { | |
| 1587 | 526 AggregateDeclaration *ad = s->isClassDeclaration(); |
| 159 | 527 FuncDeclaration *fd = s->isFuncDeclaration(); |
| 528 | |
| 529 | |
| 1587 | 530 if (ad || fd) |
| 159 | 531 { isnested = 1; |
| 532 Type *t; | |
| 1587 | 533 if (ad) |
| 534 t = ad->handle; | |
| 159 | 535 else if (fd) |
| 536 { AggregateDeclaration *ad = fd->isMember2(); | |
| 537 if (ad) | |
| 538 t = ad->handle; | |
| 539 else | |
| 540 { | |
| 541 t = new TypePointer(Type::tvoid); | |
| 542 t = t->semantic(0, sc); | |
| 543 } | |
| 544 } | |
| 545 else | |
| 546 assert(0); | |
| 547 assert(!vthis); | |
|
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548 vthis = new ThisDeclaration(loc, t); |
| 159 | 549 members->push(vthis); |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 } | |
| 554 | |
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555 if (storage_class & STCauto) |
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556 error("storage class has no effect: auto"); |
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557 if (storage_class & STCscope) |
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558 isscope = 1; |
| 159 | 559 if (storage_class & STCabstract) |
| 560 isabstract = 1; | |
| 561 | |
| 562 sc = sc->push(this); | |
| 563 sc->stc &= ~(STCfinal | STCauto | STCscope | STCstatic | | |
| 564 STCabstract | STCdeprecated); | |
| 565 sc->parent = this; | |
| 566 sc->inunion = 0; | |
| 567 | |
| 568 if (isCOMclass()) | |
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569 { |
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570 #if _WIN32 |
| 159 | 571 sc->linkage = LINKwindows; |
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572 #else |
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573 /* This enables us to use COM objects under Linux and |
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574 * work with things like XPCOM |
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575 */ |
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576 sc->linkage = LINKc; |
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577 #endif |
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578 } |
| 159 | 579 sc->protection = PROTpublic; |
| 580 sc->explicitProtection = 0; | |
| 581 sc->structalign = 8; | |
| 582 structalign = sc->structalign; | |
| 583 if (baseClass) | |
| 584 { sc->offset = baseClass->structsize; | |
| 585 alignsize = baseClass->alignsize; | |
| 586 // if (isnested) | |
| 587 // sc->offset += PTRSIZE; // room for uplevel context pointer | |
| 588 } | |
| 589 else | |
| 1587 | 590 { sc->offset = PTRSIZE * 2; // allow room for __vptr and __monitor |
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591 alignsize = PTRSIZE; |
| 159 | 592 } |
| 593 structsize = sc->offset; | |
| 594 Scope scsave = *sc; | |
| 595 int members_dim = members->dim; | |
| 596 sizeok = 0; | |
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597 |
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598 /* Set scope so if there are forward references, we still might be able to |
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599 * resolve individual members like enums. |
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600 */ |
| 159 | 601 for (i = 0; i < members_dim; i++) |
|
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602 { Dsymbol *s = (Dsymbol *)members->data[i]; |
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603 /* There are problems doing this in the general case because |
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604 * Scope keeps track of things like 'offset' |
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605 */ |
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606 if (s->isEnumDeclaration() || (s->isAggregateDeclaration() && s->ident)) |
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607 { |
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608 //printf("setScope %s %s\n", s->kind(), s->toChars()); |
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609 s->setScope(sc); |
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610 } |
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611 } |
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612 |
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613 for (i = 0; i < members_dim; i++) |
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614 { Dsymbol *s = (Dsymbol *)members->data[i]; |
| 159 | 615 s->semantic(sc); |
| 616 } | |
| 617 | |
| 618 if (sizeok == 2) | |
| 619 { // semantic() failed because of forward references. | |
| 620 // Unwind what we did, and defer it for later | |
| 621 fields.setDim(0); | |
| 622 structsize = 0; | |
| 623 alignsize = 0; | |
| 624 structalign = 0; | |
| 625 | |
| 626 sc = sc->pop(); | |
| 627 | |
| 628 scope = scx ? scx : new Scope(*sc); | |
| 629 scope->setNoFree(); | |
| 630 scope->module->addDeferredSemantic(this); | |
| 631 | |
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632 Module::dprogress = dprogress_save; |
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633 |
| 336 | 634 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); |
| 159 | 635 return; |
| 636 } | |
| 637 | |
| 638 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 639 | |
| 640 structsize = sc->offset; | |
| 641 //members->print(); | |
| 642 | |
| 643 /* Look for special member functions. | |
| 644 * They must be in this class, not in a base class. | |
| 645 */ | |
| 646 ctor = (CtorDeclaration *)search(0, Id::ctor, 0); | |
|
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647 if (ctor && (ctor->toParent() != this || !ctor->isCtorDeclaration())) |
| 159 | 648 ctor = NULL; |
| 649 | |
| 650 // dtor = (DtorDeclaration *)search(Id::dtor, 0); | |
| 651 // if (dtor && dtor->toParent() != this) | |
| 652 // dtor = NULL; | |
| 653 | |
| 654 // inv = (InvariantDeclaration *)search(Id::classInvariant, 0); | |
| 655 // if (inv && inv->toParent() != this) | |
| 656 // inv = NULL; | |
| 657 | |
| 658 // Can be in base class | |
| 659 aggNew = (NewDeclaration *)search(0, Id::classNew, 0); | |
| 660 aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0); | |
| 661 | |
| 662 // If this class has no constructor, but base class does, create | |
| 663 // a constructor: | |
| 664 // this() { } | |
| 665 if (!ctor && baseClass && baseClass->ctor) | |
| 666 { | |
| 667 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 336 | 668 ctor = new CtorDeclaration(loc, 0, NULL, 0); |
| 159 | 669 ctor->fbody = new CompoundStatement(0, new Statements()); |
| 670 members->push(ctor); | |
| 671 ctor->addMember(sc, this, 1); | |
| 672 *sc = scsave; // why? What about sc->nofree? | |
| 673 sc->offset = structsize; | |
| 674 ctor->semantic(sc); | |
| 675 defaultCtor = ctor; | |
| 676 } | |
| 677 | |
| 678 #if 0 | |
| 679 if (baseClass) | |
| 680 { if (!aggDelete) | |
| 681 aggDelete = baseClass->aggDelete; | |
| 682 if (!aggNew) | |
| 683 aggNew = baseClass->aggNew; | |
| 684 } | |
| 685 #endif | |
| 686 | |
| 687 // Allocate instance of each new interface | |
| 688 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 689 { | |
| 690 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 691 unsigned thissize = PTRSIZE; | |
| 692 | |
| 693 alignmember(structalign, thissize, &sc->offset); | |
| 694 assert(b->offset == 0); | |
| 695 b->offset = sc->offset; | |
| 696 | |
| 697 // Take care of single inheritance offsets | |
| 698 while (b->baseInterfaces_dim) | |
| 699 { | |
| 700 b = &b->baseInterfaces[0]; | |
| 701 b->offset = sc->offset; | |
| 702 } | |
| 703 | |
| 704 sc->offset += thissize; | |
| 705 if (alignsize < thissize) | |
| 706 alignsize = thissize; | |
| 707 } | |
| 708 structsize = sc->offset; | |
| 709 sizeok = 1; | |
| 710 Module::dprogress++; | |
| 711 | |
| 712 dtor = buildDtor(sc); | |
| 713 | |
| 714 sc->pop(); | |
| 715 | |
| 716 #if 0 // Do not call until toObjfile() because of forward references | |
| 717 // Fill in base class vtbl[]s | |
| 718 for (i = 0; i < vtblInterfaces->dim; i++) | |
| 719 { | |
| 720 BaseClass *b = (BaseClass *)vtblInterfaces->data[i]; | |
| 721 | |
| 722 //b->fillVtbl(this, &b->vtbl, 1); | |
| 723 } | |
| 724 #endif | |
| 725 //printf("-ClassDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 726 } | |
| 727 | |
| 728 void ClassDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 729 { | |
| 730 if (!isAnonymous()) | |
| 731 { | |
| 732 buf->printf("%s ", kind()); | |
| 733 buf->writestring(toChars()); | |
| 734 if (baseclasses.dim) | |
| 735 buf->writestring(" : "); | |
| 736 } | |
| 737 for (int i = 0; i < baseclasses.dim; i++) | |
| 738 { | |
| 739 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 740 | |
| 741 if (i) | |
| 742 buf->writeByte(','); | |
| 743 //buf->writestring(b->base->ident->toChars()); | |
| 744 b->type->toCBuffer(buf, NULL, hgs); | |
| 745 } | |
| 1587 | 746 if (members) |
| 159 | 747 { |
| 1587 | 748 buf->writenl(); |
| 749 buf->writeByte('{'); | |
| 750 buf->writenl(); | |
| 751 for (int i = 0; i < members->dim; i++) | |
| 752 { | |
| 753 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 159 | 754 |
| 1587 | 755 buf->writestring(" "); |
| 756 s->toCBuffer(buf, hgs); | |
| 757 } | |
| 758 buf->writestring("}"); | |
| 159 | 759 } |
| 1587 | 760 else |
| 761 buf->writeByte(';'); | |
| 159 | 762 buf->writenl(); |
| 763 } | |
| 764 | |
| 765 #if 0 | |
| 766 void ClassDeclaration::defineRef(Dsymbol *s) | |
| 767 { | |
| 768 ClassDeclaration *cd; | |
| 769 | |
| 770 AggregateDeclaration::defineRef(s); | |
| 771 cd = s->isClassDeclaration(); | |
| 772 baseType = cd->baseType; | |
| 773 cd->baseType = NULL; | |
| 774 } | |
| 775 #endif | |
| 776 | |
| 777 /********************************************* | |
| 778 * Determine if 'this' is a base class of cd. | |
| 779 * This is used to detect circular inheritance only. | |
| 780 */ | |
| 781 | |
| 782 int ClassDeclaration::isBaseOf2(ClassDeclaration *cd) | |
| 783 { | |
| 784 if (!cd) | |
| 785 return 0; | |
| 786 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 787 for (int i = 0; i < cd->baseclasses.dim; i++) | |
| 788 { BaseClass *b = (BaseClass *)cd->baseclasses.data[i]; | |
| 789 | |
| 790 if (b->base == this || isBaseOf2(b->base)) | |
| 791 return 1; | |
| 792 } | |
| 793 return 0; | |
| 794 } | |
| 795 | |
| 796 /******************************************* | |
| 797 * Determine if 'this' is a base class of cd. | |
| 798 */ | |
| 799 | |
| 800 int ClassDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 801 { | |
| 802 //printf("ClassDeclaration::isBaseOf(this = '%s', cd = '%s')\n", toChars(), cd->toChars()); | |
| 803 if (poffset) | |
| 804 *poffset = 0; | |
| 805 while (cd) | |
| 806 { | |
| 807 if (this == cd->baseClass) | |
| 808 return 1; | |
| 809 | |
| 810 /* cd->baseClass might not be set if cd is forward referenced. | |
| 811 */ | |
| 812 if (!cd->baseClass && cd->baseclasses.dim && !cd->isInterfaceDeclaration()) | |
| 813 { | |
| 814 cd->error("base class is forward referenced by %s", toChars()); | |
| 815 } | |
| 816 | |
| 817 cd = cd->baseClass; | |
| 818 } | |
| 819 return 0; | |
| 820 } | |
| 821 | |
| 822 Dsymbol *ClassDeclaration::search(Loc loc, Identifier *ident, int flags) | |
| 823 { | |
| 824 Dsymbol *s; | |
| 1587 | 825 //printf("%s.ClassDeclaration::search('%s')\n", toChars(), ident->toChars()); |
| 159 | 826 |
| 827 if (scope) | |
| 1587 | 828 { Scope *sc = scope; |
| 829 sc->mustsemantic++; | |
| 830 semantic(sc); | |
| 831 sc->mustsemantic--; | |
| 832 } | |
| 159 | 833 |
| 834 if (!members || !symtab || scope) | |
| 1587 | 835 { |
| 836 error("is forward referenced when looking for '%s'", ident->toChars()); | |
| 159 | 837 //*(char*)0=0; |
| 838 return NULL; | |
| 839 } | |
| 840 | |
| 841 s = ScopeDsymbol::search(loc, ident, flags); | |
| 842 if (!s) | |
| 843 { | |
| 844 // Search bases classes in depth-first, left to right order | |
| 845 | |
| 846 int i; | |
| 847 | |
| 848 for (i = 0; i < baseclasses.dim; i++) | |
| 849 { | |
| 850 BaseClass *b = (BaseClass *)baseclasses.data[i]; | |
| 851 | |
| 852 if (b->base) | |
| 853 { | |
| 854 if (!b->base->symtab) | |
| 855 error("base %s is forward referenced", b->base->ident->toChars()); | |
| 856 else | |
| 857 { | |
| 858 s = b->base->search(loc, ident, flags); | |
| 859 if (s == this) // happens if s is nested in this and derives from this | |
| 860 s = NULL; | |
| 861 else if (s) | |
| 862 break; | |
| 863 } | |
| 864 } | |
| 865 } | |
| 866 } | |
| 867 return s; | |
| 868 } | |
| 869 | |
| 870 /********************************************************** | |
| 871 * fd is in the vtbl[] for this class. | |
| 872 * Return 1 if function is hidden (not findable through search). | |
| 873 */ | |
| 874 | |
| 336 | 875 #if DMDV2 |
| 159 | 876 int isf(void *param, FuncDeclaration *fd) |
| 877 { | |
| 878 //printf("param = %p, fd = %p %s\n", param, fd, fd->toChars()); | |
| 879 return param == fd; | |
| 880 } | |
| 881 | |
| 882 int ClassDeclaration::isFuncHidden(FuncDeclaration *fd) | |
| 883 { | |
| 1587 | 884 //printf("ClassDeclaration::isFuncHidden(class = %s, fd = %s)\n", toChars(), fd->toChars()); |
| 159 | 885 Dsymbol *s = search(0, fd->ident, 4|2); |
| 886 if (!s) | |
| 887 { //printf("not found\n"); | |
| 888 /* Because, due to a hack, if there are multiple definitions | |
| 889 * of fd->ident, NULL is returned. | |
| 890 */ | |
| 891 return 0; | |
| 892 } | |
| 893 FuncDeclaration *fdstart = s->toAlias()->isFuncDeclaration(); | |
| 894 //printf("%s fdstart = %p\n", s->kind(), fdstart); | |
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895 return !overloadApply(getModule(), fdstart, &isf, fd); |
| 159 | 896 } |
| 897 #endif | |
| 898 | |
| 899 /**************** | |
| 900 * Find virtual function matching identifier and type. | |
| 901 * Used to build virtual function tables for interface implementations. | |
| 902 */ | |
| 903 | |
| 904 FuncDeclaration *ClassDeclaration::findFunc(Identifier *ident, TypeFunction *tf) | |
| 905 { | |
| 906 //printf("ClassDeclaration::findFunc(%s, %s) %s\n", ident->toChars(), tf->toChars(), toChars()); | |
| 907 | |
| 908 ClassDeclaration *cd = this; | |
| 909 Array *vtbl = &cd->vtbl; | |
| 910 while (1) | |
| 911 { | |
| 912 for (size_t i = 0; i < vtbl->dim; i++) | |
| 913 { | |
|
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914 FuncDeclaration *fd = ((Dsymbol*)vtbl->data[i])->isFuncDeclaration(); |
|
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915 if (!fd) |
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916 continue; // the first entry might be a ClassInfo |
| 159 | 917 |
| 918 //printf("\t[%d] = %s\n", i, fd->toChars()); | |
| 919 if (ident == fd->ident && | |
| 920 //tf->equals(fd->type) | |
| 921 fd->type->covariant(tf) == 1 | |
| 922 ) | |
| 923 { //printf("\t\tfound\n"); | |
| 924 return fd; | |
| 925 } | |
| 926 //else printf("\t\t%d\n", fd->type->covariant(tf)); | |
| 927 } | |
| 928 if (!cd) | |
| 929 break; | |
| 930 vtbl = &cd->vtblFinal; | |
| 931 cd = cd->baseClass; | |
| 932 } | |
| 933 | |
| 934 return NULL; | |
| 935 } | |
| 936 | |
| 937 void ClassDeclaration::interfaceSemantic(Scope *sc) | |
| 336 | 938 { |
| 159 | 939 vtblInterfaces = new BaseClasses(); |
| 940 vtblInterfaces->reserve(interfaces_dim); | |
| 941 | |
| 336 | 942 for (size_t i = 0; i < interfaces_dim; i++) |
| 159 | 943 { |
| 944 BaseClass *b = interfaces[i]; | |
| 945 | |
| 946 // If this is an interface, and it derives from a COM interface, | |
| 947 // then this is a COM interface too. | |
| 948 if (b->base->isCOMinterface()) | |
| 949 com = 1; | |
| 950 | |
| 951 vtblInterfaces->push(b); | |
| 952 b->copyBaseInterfaces(vtblInterfaces); | |
| 953 } | |
| 954 } | |
| 955 | |
| 956 /**************************************** | |
| 957 */ | |
| 958 | |
| 959 int ClassDeclaration::isCOMclass() | |
| 960 { | |
| 961 return com; | |
| 962 } | |
| 963 | |
| 964 int ClassDeclaration::isCOMinterface() | |
| 965 { | |
| 966 return 0; | |
| 967 } | |
| 968 | |
| 1587 | 969 #if DMDV2 |
| 970 int ClassDeclaration::isCPPinterface() | |
| 971 { | |
| 972 return 0; | |
| 973 } | |
| 974 #endif | |
| 975 | |
| 159 | 976 |
| 977 /**************************************** | |
| 978 */ | |
| 979 | |
| 980 int ClassDeclaration::isAbstract() | |
| 981 { | |
| 982 if (isabstract) | |
| 983 return TRUE; | |
| 984 for (int i = 1; i < vtbl.dim; i++) | |
| 985 { | |
| 986 FuncDeclaration *fd = ((Dsymbol *)vtbl.data[i])->isFuncDeclaration(); | |
| 987 | |
| 988 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 989 if (!fd || fd->isAbstract()) | |
| 990 { | |
| 991 isabstract |= 1; | |
| 992 return TRUE; | |
| 993 } | |
| 994 } | |
| 995 return FALSE; | |
| 996 } | |
| 997 | |
| 336 | 998 |
| 159 | 999 /**************************************** |
| 1000 * Returns !=0 if there's an extra member which is the 'this' | |
| 1001 * pointer to the enclosing context (enclosing class or function) | |
| 1002 */ | |
| 1003 | |
| 1004 int ClassDeclaration::isNested() | |
| 1005 { | |
| 1006 return isnested; | |
| 1007 } | |
| 1008 | |
| 1009 /**************************************** | |
| 1010 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 1011 * For class objects, yes, this is where the classinfo ptr goes. | |
| 1012 * For COM interfaces, no. | |
| 1013 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 1014 */ | |
| 1015 | |
| 1016 int ClassDeclaration::vtblOffset() | |
| 1017 { | |
| 1018 return 1; | |
| 1019 } | |
| 1020 | |
| 1021 /**************************************** | |
| 1022 */ | |
| 1023 | |
| 336 | 1024 const char *ClassDeclaration::kind() |
| 159 | 1025 { |
| 1026 return "class"; | |
| 1027 } | |
| 1028 | |
| 1029 /**************************************** | |
| 1030 */ | |
| 1031 | |
| 1032 void ClassDeclaration::addLocalClass(ClassDeclarations *aclasses) | |
| 1033 { | |
| 1034 aclasses->push(this); | |
| 1035 } | |
| 1036 | |
| 1037 /********************************* InterfaceDeclaration ****************************/ | |
| 1038 | |
| 1039 InterfaceDeclaration::InterfaceDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses) | |
| 1040 : ClassDeclaration(loc, id, baseclasses) | |
| 1041 { | |
| 1042 com = 0; | |
| 1043 if (id == Id::IUnknown) // IUnknown is the root of all COM objects | |
| 1044 com = 1; | |
| 1045 } | |
| 1046 | |
| 1047 Dsymbol *InterfaceDeclaration::syntaxCopy(Dsymbol *s) | |
| 1048 { | |
| 1049 InterfaceDeclaration *id; | |
| 1050 | |
| 1051 if (s) | |
| 1052 id = (InterfaceDeclaration *)s; | |
| 1053 else | |
| 1054 id = new InterfaceDeclaration(loc, ident, NULL); | |
| 1055 | |
| 1056 ClassDeclaration::syntaxCopy(id); | |
| 1057 return id; | |
| 1058 } | |
| 1059 | |
| 1060 void InterfaceDeclaration::semantic(Scope *sc) | |
| 1061 { int i; | |
| 1062 | |
| 1063 //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1064 if (inuse) | |
| 1065 return; | |
| 1587 | 1066 |
| 1067 if (!sc) | |
| 1068 sc = scope; | |
| 1069 if (!parent && sc->parent && !sc->parent->isModule()) | |
| 1070 parent = sc->parent; | |
| 1071 | |
| 1072 type = type->semantic(loc, sc); | |
| 1073 handle = type; | |
| 1074 | |
| 159 | 1075 if (!members) // if forward reference |
| 1076 { //printf("\tinterface '%s' is forward referenced\n", toChars()); | |
| 1077 return; | |
| 1078 } | |
| 1079 if (symtab) // if already done | |
| 1080 { if (!scope) | |
| 1081 return; | |
| 1082 } | |
| 1083 else | |
| 1084 symtab = new DsymbolTable(); | |
| 1085 | |
| 1086 Scope *scx = NULL; | |
| 1087 if (scope) | |
| 1088 { sc = scope; | |
| 1089 scx = scope; // save so we don't make redundant copies | |
| 1090 scope = NULL; | |
| 1091 } | |
| 1092 | |
| 1093 if (sc->stc & STCdeprecated) | |
| 1094 { | |
| 1095 isdeprecated = 1; | |
| 1096 } | |
| 1097 | |
| 1098 // Expand any tuples in baseclasses[] | |
| 1099 for (i = 0; i < baseclasses.dim; ) | |
| 1100 { BaseClass *b = (BaseClass *)baseclasses.data[0]; | |
| 1101 b->type = b->type->semantic(loc, sc); | |
| 1102 Type *tb = b->type->toBasetype(); | |
| 1103 | |
| 1104 if (tb->ty == Ttuple) | |
| 1105 { TypeTuple *tup = (TypeTuple *)tb; | |
| 1106 enum PROT protection = b->protection; | |
| 1107 baseclasses.remove(i); | |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1108 size_t dim = Parameter::dim(tup->arguments); |
| 159 | 1109 for (size_t j = 0; j < dim; j++) |
|
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1110 { Parameter *arg = Parameter::getNth(tup->arguments, j); |
| 159 | 1111 b = new BaseClass(arg->type, protection); |
| 1112 baseclasses.insert(i + j, b); | |
| 1113 } | |
| 1114 } | |
| 1115 else | |
| 1116 i++; | |
| 1117 } | |
| 1118 | |
| 1119 // Check for errors, handle forward references | |
| 1120 for (i = 0; i < baseclasses.dim; ) | |
| 1121 { TypeClass *tc; | |
| 1122 BaseClass *b; | |
| 1123 Type *tb; | |
| 1124 | |
| 1125 b = (BaseClass *)baseclasses.data[i]; | |
| 1126 b->type = b->type->semantic(loc, sc); | |
| 1127 tb = b->type->toBasetype(); | |
| 1128 if (tb->ty == Tclass) | |
| 1129 tc = (TypeClass *)tb; | |
| 1130 else | |
| 1131 tc = NULL; | |
| 1132 if (!tc || !tc->sym->isInterfaceDeclaration()) | |
| 1133 { | |
| 1134 error("base type must be interface, not %s", b->type->toChars()); | |
| 1135 baseclasses.remove(i); | |
| 1136 continue; | |
| 1137 } | |
| 1138 else | |
| 1139 { | |
| 1140 // Check for duplicate interfaces | |
| 1141 for (size_t j = 0; j < i; j++) | |
| 1142 { | |
| 1143 BaseClass *b2 = (BaseClass *)baseclasses.data[j]; | |
| 1144 if (b2->base == tc->sym) | |
| 1145 error("inherits from duplicate interface %s", b2->base->toChars()); | |
| 1146 } | |
| 1147 | |
| 1148 b->base = tc->sym; | |
| 1149 if (b->base == this || isBaseOf2(b->base)) | |
| 1150 { | |
| 1151 error("circular inheritance of interface"); | |
| 1152 baseclasses.remove(i); | |
| 1153 continue; | |
| 1154 } | |
| 1587 | 1155 if (!b->base->symtab) |
| 1156 { // Try to resolve forward reference | |
| 1157 if (sc->mustsemantic && b->base->scope) | |
| 1158 b->base->semantic(NULL); | |
| 1159 } | |
| 159 | 1160 if (!b->base->symtab || b->base->scope || b->base->inuse) |
| 1161 { | |
| 1162 //error("forward reference of base class %s", baseClass->toChars()); | |
| 1163 // Forward reference of base, try again later | |
| 1164 //printf("\ttry later, forward reference of base %s\n", b->base->toChars()); | |
| 1165 scope = scx ? scx : new Scope(*sc); | |
| 1166 scope->setNoFree(); | |
| 1167 scope->module->addDeferredSemantic(this); | |
| 1168 return; | |
| 1169 } | |
| 1170 } | |
| 1171 i++; | |
| 1172 } | |
| 1173 | |
| 1174 interfaces_dim = baseclasses.dim; | |
| 1175 interfaces = (BaseClass **)baseclasses.data; | |
| 1176 | |
| 1177 interfaceSemantic(sc); | |
| 1178 | |
| 1179 if (vtblOffset()) | |
| 1180 vtbl.push(this); // leave room at vtbl[0] for classinfo | |
| 1181 | |
| 1182 // Cat together the vtbl[]'s from base interfaces | |
| 1183 for (i = 0; i < interfaces_dim; i++) | |
| 1184 { BaseClass *b = interfaces[i]; | |
| 1185 | |
| 1186 // Skip if b has already appeared | |
| 1187 for (int k = 0; k < i; k++) | |
| 1188 { | |
|
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Merge DMD r319: bugzilla 400 forward reference error...
Leandro Lucarella <llucax@gmail.com>
parents:
1607
diff
changeset
|
1189 if (b == interfaces[k]) |
| 159 | 1190 goto Lcontinue; |
| 1191 } | |
| 1192 | |
| 1193 // Copy vtbl[] from base class | |
| 1194 if (b->base->vtblOffset()) | |
| 1195 { int d = b->base->vtbl.dim; | |
| 1196 if (d > 1) | |
| 1197 { | |
| 1198 vtbl.reserve(d - 1); | |
| 1199 for (int j = 1; j < d; j++) | |
| 1200 vtbl.push(b->base->vtbl.data[j]); | |
| 1201 } | |
| 1202 } | |
| 1203 else | |
| 1204 { | |
| 1205 vtbl.append(&b->base->vtbl); | |
| 1206 } | |
| 1207 | |
| 1208 Lcontinue: | |
| 1209 ; | |
| 1210 } | |
| 1211 | |
| 1212 for (i = 0; i < members->dim; i++) | |
| 1213 { | |
| 1214 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1215 s->addMember(sc, this, 1); | |
| 1216 } | |
| 1217 | |
| 1218 sc = sc->push(this); | |
| 1219 sc->parent = this; | |
| 1220 if (isCOMinterface()) | |
| 1221 sc->linkage = LINKwindows; | |
| 1222 sc->structalign = 8; | |
| 1223 structalign = sc->structalign; | |
|
1195
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Merged DMD 1.042.
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parents:
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diff
changeset
|
1224 sc->offset = PTRSIZE * 2; |
| 159 | 1225 inuse++; |
| 1226 for (i = 0; i < members->dim; i++) | |
| 1227 { | |
| 1228 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1229 s->semantic(sc); | |
| 1230 } | |
| 1231 inuse--; | |
| 1232 //members->print(); | |
| 1233 sc->pop(); | |
| 1234 //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type); | |
| 1235 } | |
| 1236 | |
| 1237 | |
| 1238 /******************************************* | |
| 1239 * Determine if 'this' is a base class of cd. | |
| 1240 * (Actually, if it is an interface supported by cd) | |
| 1241 * Output: | |
| 1242 * *poffset offset to start of class | |
| 1243 * OFFSET_RUNTIME must determine offset at runtime | |
| 1244 * Returns: | |
| 1245 * 0 not a base | |
| 1246 * 1 is a base | |
| 1247 */ | |
| 1248 | |
| 1249 int InterfaceDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset) | |
| 1250 { | |
| 1251 unsigned j; | |
| 1252 | |
| 1253 //printf("%s.InterfaceDeclaration::isBaseOf(cd = '%s')\n", toChars(), cd->toChars()); | |
| 1254 assert(!baseClass); | |
| 1255 for (j = 0; j < cd->interfaces_dim; j++) | |
| 1256 { | |
| 1257 BaseClass *b = cd->interfaces[j]; | |
| 1258 | |
| 1259 //printf("\tbase %s\n", b->base->toChars()); | |
| 1260 if (this == b->base) | |
| 1261 { | |
| 1262 //printf("\tfound at offset %d\n", b->offset); | |
| 1263 if (poffset) | |
| 1264 { *poffset = b->offset; | |
| 1265 if (j && cd->isInterfaceDeclaration()) | |
| 1266 *poffset = OFFSET_RUNTIME; | |
| 1267 } | |
| 1268 return 1; | |
| 1269 } | |
| 1270 if (isBaseOf(b, poffset)) | |
| 1271 { if (j && poffset && cd->isInterfaceDeclaration()) | |
| 1272 *poffset = OFFSET_RUNTIME; | |
| 1273 return 1; | |
| 1274 } | |
| 1275 } | |
| 1276 | |
| 1277 if (cd->baseClass && isBaseOf(cd->baseClass, poffset)) | |
| 1278 return 1; | |
| 1279 | |
| 1280 if (poffset) | |
| 1281 *poffset = 0; | |
| 1282 return 0; | |
| 1283 } | |
| 1284 | |
| 1285 | |
| 1286 int InterfaceDeclaration::isBaseOf(BaseClass *bc, int *poffset) | |
| 1287 { | |
| 1288 //printf("%s.InterfaceDeclaration::isBaseOf(bc = '%s')\n", toChars(), bc->base->toChars()); | |
| 1289 for (unsigned j = 0; j < bc->baseInterfaces_dim; j++) | |
| 1290 { | |
| 1291 BaseClass *b = &bc->baseInterfaces[j]; | |
| 1292 | |
| 1293 if (this == b->base) | |
| 1294 { | |
| 1295 if (poffset) | |
| 1296 { *poffset = b->offset; | |
|
1367
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Merged DMD 1.045 !!!
Tomas Lindquist Olsen <tomas.l.olsen gmail com>
parents:
1358
diff
changeset
|
1297 if (j && bc->base->isInterfaceDeclaration()) |
|
8026319762be
Merged DMD 1.045 !!!
Tomas Lindquist Olsen <tomas.l.olsen gmail com>
parents:
1358
diff
changeset
|
1298 *poffset = OFFSET_RUNTIME; |
| 159 | 1299 } |
| 1300 return 1; | |
| 1301 } | |
| 1302 if (isBaseOf(b, poffset)) | |
|
1367
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Merged DMD 1.045 !!!
Tomas Lindquist Olsen <tomas.l.olsen gmail com>
parents:
1358
diff
changeset
|
1303 { if (j && poffset && bc->base->isInterfaceDeclaration()) |
|
8026319762be
Merged DMD 1.045 !!!
Tomas Lindquist Olsen <tomas.l.olsen gmail com>
parents:
1358
diff
changeset
|
1304 *poffset = OFFSET_RUNTIME; |
| 159 | 1305 return 1; |
| 1306 } | |
| 1307 } | |
| 1308 if (poffset) | |
| 1309 *poffset = 0; | |
| 1310 return 0; | |
| 1311 } | |
| 1312 | |
| 1313 /**************************************** | |
| 1314 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 1315 * For class objects, yes, this is where the ClassInfo ptr goes. | |
| 1316 * For COM interfaces, no. | |
| 1317 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 1318 */ | |
| 1319 | |
| 1320 int InterfaceDeclaration::vtblOffset() | |
| 1321 { | |
| 1322 if (isCOMinterface()) | |
| 1323 return 0; | |
| 1324 return 1; | |
| 1325 } | |
| 1326 | |
| 1327 int InterfaceDeclaration::isCOMinterface() | |
| 1328 { | |
| 1329 return com; | |
| 1330 } | |
| 1331 | |
| 1587 | 1332 #if DMDV2 |
| 1333 int InterfaceDeclaration::isCPPinterface() | |
| 1334 { | |
| 1335 return cpp; | |
| 1336 } | |
| 1337 #endif | |
| 1338 | |
| 159 | 1339 /******************************************* |
| 1340 */ | |
| 1341 | |
| 336 | 1342 const char *InterfaceDeclaration::kind() |
| 159 | 1343 { |
| 1344 return "interface"; | |
| 1345 } | |
| 1346 | |
| 1347 | |
| 1348 /******************************** BaseClass *****************************/ | |
| 1349 | |
| 1350 BaseClass::BaseClass() | |
| 1351 { | |
| 1352 memset(this, 0, sizeof(BaseClass)); | |
| 1353 } | |
| 1354 | |
| 1355 BaseClass::BaseClass(Type *type, enum PROT protection) | |
| 1356 { | |
| 1357 //printf("BaseClass(this = %p, '%s')\n", this, type->toChars()); | |
| 1358 this->type = type; | |
| 1359 this->protection = protection; | |
| 1360 base = NULL; | |
| 1361 offset = 0; | |
| 1362 | |
| 1363 baseInterfaces_dim = 0; | |
| 1364 baseInterfaces = NULL; | |
| 1365 } | |
| 1366 | |
| 1367 /**************************************** | |
| 1368 * Fill in vtbl[] for base class based on member functions of class cd. | |
| 1369 * Input: | |
| 1370 * vtbl if !=NULL, fill it in | |
| 1371 * newinstance !=0 means all entries must be filled in by members | |
| 1372 * of cd, not members of any base classes of cd. | |
| 1373 * Returns: | |
| 1374 * !=0 if any entries were filled in by members of cd (not exclusively | |
| 1375 * by base classes) | |
| 1376 */ | |
| 1377 | |
| 1378 int BaseClass::fillVtbl(ClassDeclaration *cd, Array *vtbl, int newinstance) | |
| 1379 { | |
| 1380 ClassDeclaration *id = base; | |
| 1381 int j; | |
| 1382 int result = 0; | |
| 1383 | |
| 1384 //printf("BaseClass::fillVtbl(this='%s', cd='%s')\n", base->toChars(), cd->toChars()); | |
| 1385 if (vtbl) | |
| 1386 vtbl->setDim(base->vtbl.dim); | |
| 1387 | |
| 1388 // first entry is ClassInfo reference | |
| 1389 for (j = base->vtblOffset(); j < base->vtbl.dim; j++) | |
| 1390 { | |
| 1391 FuncDeclaration *ifd = ((Dsymbol *)base->vtbl.data[j])->isFuncDeclaration(); | |
| 1392 FuncDeclaration *fd; | |
| 1393 TypeFunction *tf; | |
| 1394 | |
| 1395 //printf(" vtbl[%d] is '%s'\n", j, ifd ? ifd->toChars() : "null"); | |
| 1396 | |
| 1397 assert(ifd); | |
| 1398 // Find corresponding function in this class | |
| 1399 tf = (ifd->type->ty == Tfunction) ? (TypeFunction *)(ifd->type) : NULL; | |
| 1400 fd = cd->findFunc(ifd->ident, tf); | |
| 1401 if (fd && !fd->isAbstract()) | |
| 1402 { | |
| 1403 //printf(" found\n"); | |
| 1404 // Check that calling conventions match | |
| 1405 if (fd->linkage != ifd->linkage) | |
| 1406 fd->error("linkage doesn't match interface function"); | |
| 1407 | |
| 1408 // Check that it is current | |
| 1409 if (newinstance && | |
| 1410 fd->toParent() != cd && | |
| 1411 ifd->toParent() == base) | |
| 1412 cd->error("interface function %s.%s is not implemented", | |
| 1413 id->toChars(), ifd->ident->toChars()); | |
| 1414 | |
| 1415 if (fd->toParent() == cd) | |
| 1416 result = 1; | |
| 1417 } | |
| 1418 else | |
| 1419 { | |
| 1420 //printf(" not found\n"); | |
| 1421 // BUG: should mark this class as abstract? | |
| 1422 if (!cd->isAbstract()) | |
| 1423 cd->error("interface function %s.%s isn't implemented", | |
| 1424 id->toChars(), ifd->ident->toChars()); | |
| 1425 fd = NULL; | |
| 1426 } | |
| 1427 if (vtbl) | |
| 1428 vtbl->data[j] = fd; | |
| 1429 } | |
| 1430 | |
| 1431 return result; | |
| 1432 } | |
| 1433 | |
| 1434 void BaseClass::copyBaseInterfaces(BaseClasses *vtblInterfaces) | |
| 1435 { | |
| 1436 //printf("+copyBaseInterfaces(), %s\n", base->toChars()); | |
| 1437 // if (baseInterfaces_dim) | |
| 1438 // return; | |
| 1439 | |
| 1440 baseInterfaces_dim = base->interfaces_dim; | |
| 1441 baseInterfaces = (BaseClass *)mem.calloc(baseInterfaces_dim, sizeof(BaseClass)); | |
| 1442 | |
| 1443 //printf("%s.copyBaseInterfaces()\n", base->toChars()); | |
| 1444 for (int i = 0; i < baseInterfaces_dim; i++) | |
| 1445 { | |
| 1446 BaseClass *b = &baseInterfaces[i]; | |
| 1447 BaseClass *b2 = base->interfaces[i]; | |
| 1448 | |
| 1449 assert(b2->vtbl.dim == 0); // should not be filled yet | |
| 1450 memcpy(b, b2, sizeof(BaseClass)); | |
| 1451 | |
| 1452 if (i) // single inheritance is i==0 | |
| 1453 vtblInterfaces->push(b); // only need for M.I. | |
| 1454 b->copyBaseInterfaces(vtblInterfaces); | |
| 1455 } | |
| 1456 //printf("-copyBaseInterfaces\n"); | |
| 1457 } |