Mercurial > projects > ddmd
annotate dmd/ClassDeclaration.d @ 74:7e0d548de9e6
Switch Arrays of Dsymbols to the new templated Vector type
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Sun, 29 Aug 2010 09:43:40 +0100 |
| parents | ef02e2e203c2 |
| children | ad4792a1cfd6 |
| rev | line source |
|---|---|
| 73 | 1 module dmd.ClassDeclaration; |
| 2 | |
| 3 import dmd.AggregateDeclaration; | |
| 4 import dmd.InterfaceDeclaration; | |
| 5 import dmd.ThisDeclaration; | |
| 6 import dmd.CompoundStatement; | |
| 7 import dmd.DeleteDeclaration; | |
| 8 import dmd.NewDeclaration; | |
| 9 import dmd.CtorDeclaration; | |
| 10 import dmd.TypeIdentifier; | |
| 11 import dmd.STC; | |
| 12 import dmd.Argument; | |
| 13 import dmd.TypeTuple; | |
| 14 import dmd.TY; | |
| 15 import dmd.LINK; | |
| 16 import dmd.DsymbolTable; | |
| 17 import dmd.FuncDeclaration; | |
| 18 import dmd.Array; | |
| 19 import dmd.TypeClass; | |
| 20 import dmd.Module; | |
| 21 import dmd.Id; | |
| 22 import dmd.Type; | |
| 23 import dmd.OverloadSet; | |
| 24 import dmd.ArrayTypes; | |
| 25 import dmd.BaseClass; | |
| 26 import dmd.ClassInfoDeclaration; | |
| 27 import dmd.Loc; | |
| 28 import dmd.Identifier; | |
| 29 import dmd.Dsymbol; | |
| 30 import dmd.Scope; | |
| 31 import dmd.TypeFunction; | |
| 32 import dmd.OutBuffer; | |
| 33 import dmd.HdrGenState; | |
| 34 import dmd.VarDeclaration; | |
| 35 import dmd.Initializer; | |
| 36 import dmd.ExpInitializer; | |
| 37 import dmd.TypeSArray; | |
| 38 import dmd.ScopeDsymbol; | |
| 39 import dmd.PROT; | |
| 40 import dmd.Util; | |
| 41 import dmd.Global; | |
| 42 | |
| 43 import dmd.expression.Util; | |
| 44 | |
| 45 import dmd.backend.Symbol; | |
| 46 import dmd.backend.dt_t; | |
| 47 import dmd.backend.TYPE; | |
| 48 import dmd.backend.FL; | |
| 49 import dmd.backend.SFL; | |
| 50 import dmd.backend.mTY; | |
| 51 import dmd.backend.SC; | |
| 52 import dmd.backend.mTYman; | |
| 53 import dmd.backend.Util; | |
| 54 import dmd.backend.TYM; | |
| 55 import dmd.backend.Classsym; | |
| 56 import dmd.backend.glue; | |
| 57 import dmd.backend.RTLSYM; | |
| 58 import dmd.backend.LIST; | |
| 59 | |
| 60 import dmd.codegen.Util; | |
| 61 | |
| 62 import std.string; | |
| 63 | |
| 64 version (DMDV2) { | |
| 65 enum CLASSINFO_SIZE = (0x3C+16+4); // value of ClassInfo.size | |
| 66 } else { | |
| 67 enum CLASSINFO_SIZE = (0x3C+12+4); // value of ClassInfo.size | |
| 68 } | |
| 69 | |
| 70 enum OFFSET_RUNTIME = 0x76543210; | |
| 71 | |
| 72 struct Param | |
| 73 { | |
| 74 int isf(void*, FuncDeclaration fd2) | |
| 75 { | |
| 76 //printf("param = %p, fd = %p %s\n", param, fd, fd.toChars()); | |
| 77 return fd is fd2; | |
| 78 } | |
| 79 | |
| 80 FuncDeclaration fd; | |
| 81 } | |
| 82 | |
| 83 class ClassDeclaration : AggregateDeclaration | |
| 84 { | |
| 85 static __gshared ClassDeclaration object; | |
| 86 static __gshared ClassDeclaration classinfo; | |
| 87 | |
| 88 ClassDeclaration baseClass; // null only if this is Object | |
| 89 FuncDeclaration staticCtor; | |
| 90 FuncDeclaration staticDtor; | |
| 91 Array vtbl; // Array of FuncDeclaration's making up the vtbl[] | |
| 92 Array vtblFinal; // More FuncDeclaration's that aren't in vtbl[] | |
| 93 | |
| 94 BaseClasses baseclasses; // Array of BaseClass's; first is super, | |
| 95 // rest are Interface's | |
| 96 | |
| 97 int interfaces_dim; | |
| 98 BaseClass* interfaces; // interfaces[interfaces_dim] for this class | |
| 99 // (does not include baseClass) | |
| 100 | |
| 101 BaseClasses vtblInterfaces; // array of base interfaces that have | |
| 102 // their own vtbl[] | |
| 103 | |
| 104 ClassInfoDeclaration vclassinfo; // the ClassInfo object for this ClassDeclaration | |
| 105 bool com; // true if this is a COM class (meaning | |
| 106 // it derives from IUnknown) | |
| 107 bool isauto; // true if this is an auto class | |
| 108 bool isabstract; // true if abstract class | |
| 109 | |
| 110 int inuse; // to prevent recursive attempts | |
| 111 | |
| 112 this(Loc loc, Identifier id, BaseClasses baseclasses) | |
| 113 { | |
| 114 super(loc, id); | |
| 115 | |
| 116 vtbl = new Array(); | |
| 117 vtblFinal = new Array(); | |
| 118 | |
| 119 enum msg = "only object.d can define this reserved class name"; | |
| 120 | |
| 121 if (baseclasses) { | |
| 122 this.baseclasses = baseclasses; | |
| 123 } else { | |
| 124 this.baseclasses = new BaseClasses(); | |
| 125 } | |
| 126 | |
| 127 //printf("ClassDeclaration(%s), dim = %d\n", id.toChars(), this.baseclasses.dim); | |
| 128 | |
| 129 // For forward references | |
| 130 type = new TypeClass(this); | |
| 131 | |
| 132 if (id) | |
| 133 { | |
| 134 // Look for special class names | |
| 135 | |
| 136 if (id is Id.__sizeof || id is Id.alignof_ || id is Id.mangleof_) | |
| 137 error("illegal class name"); | |
| 138 | |
| 139 // BUG: What if this is the wrong TypeInfo, i.e. it is nested? | |
| 140 if (id.toChars()[0] == 'T') | |
| 141 { | |
| 142 if (id is Id.TypeInfo) | |
| 143 { | |
| 144 if (Type.typeinfo) | |
| 145 Type.typeinfo.error("%s", msg); | |
| 146 Type.typeinfo = this; | |
| 147 } | |
| 148 | |
| 149 if (id is Id.TypeInfo_Class) | |
| 150 { | |
| 151 if (Type.typeinfoclass) | |
| 152 Type.typeinfoclass.error("%s", msg); | |
| 153 Type.typeinfoclass = this; | |
| 154 } | |
| 155 | |
| 156 if (id is Id.TypeInfo_Interface) | |
| 157 { | |
| 158 if (Type.typeinfointerface) | |
| 159 Type.typeinfointerface.error("%s", msg); | |
| 160 Type.typeinfointerface = this; | |
| 161 } | |
| 162 | |
| 163 if (id is Id.TypeInfo_Struct) | |
| 164 { | |
| 165 if (Type.typeinfostruct) | |
| 166 Type.typeinfostruct.error("%s", msg); | |
| 167 Type.typeinfostruct = this; | |
| 168 } | |
| 169 | |
| 170 if (id is Id.TypeInfo_Typedef) | |
| 171 { | |
| 172 if (Type.typeinfotypedef) | |
| 173 Type.typeinfotypedef.error("%s", msg); | |
| 174 Type.typeinfotypedef = this; | |
| 175 } | |
| 176 | |
| 177 if (id is Id.TypeInfo_Pointer) | |
| 178 { | |
| 179 if (Type.typeinfopointer) | |
| 180 Type.typeinfopointer.error("%s", msg); | |
| 181 Type.typeinfopointer = this; | |
| 182 } | |
| 183 | |
| 184 if (id is Id.TypeInfo_Array) | |
| 185 { | |
| 186 if (Type.typeinfoarray) | |
| 187 Type.typeinfoarray.error("%s", msg); | |
| 188 Type.typeinfoarray = this; | |
| 189 } | |
| 190 | |
| 191 if (id is Id.TypeInfo_StaticArray) | |
| 192 { //if (Type.typeinfostaticarray) | |
| 193 //Type.typeinfostaticarray.error("%s", msg); | |
| 194 Type.typeinfostaticarray = this; | |
| 195 } | |
| 196 | |
| 197 if (id is Id.TypeInfo_AssociativeArray) | |
| 198 { | |
| 199 if (Type.typeinfoassociativearray) | |
| 200 Type.typeinfoassociativearray.error("%s", msg); | |
| 201 Type.typeinfoassociativearray = this; | |
| 202 } | |
| 203 | |
| 204 if (id is Id.TypeInfo_Enum) | |
| 205 { | |
| 206 if (Type.typeinfoenum) | |
| 207 Type.typeinfoenum.error("%s", msg); | |
| 208 Type.typeinfoenum = this; | |
| 209 } | |
| 210 | |
| 211 if (id is Id.TypeInfo_Function) | |
| 212 { | |
| 213 if (Type.typeinfofunction) | |
| 214 Type.typeinfofunction.error("%s", msg); | |
| 215 Type.typeinfofunction = this; | |
| 216 } | |
| 217 | |
| 218 if (id is Id.TypeInfo_Delegate) | |
| 219 { | |
| 220 if (Type.typeinfodelegate) | |
| 221 Type.typeinfodelegate.error("%s", msg); | |
| 222 Type.typeinfodelegate = this; | |
| 223 } | |
| 224 | |
| 225 if (id is Id.TypeInfo_Tuple) | |
| 226 { | |
| 227 if (Type.typeinfotypelist) | |
| 228 Type.typeinfotypelist.error("%s", msg); | |
| 229 Type.typeinfotypelist = this; | |
| 230 } | |
| 231 | |
| 232 version (DMDV2) { | |
| 233 if (id is Id.TypeInfo_Const) | |
| 234 { | |
| 235 if (Type.typeinfoconst) | |
| 236 Type.typeinfoconst.error("%s", msg); | |
| 237 Type.typeinfoconst = this; | |
| 238 } | |
| 239 | |
| 240 if (id is Id.TypeInfo_Invariant) | |
| 241 { | |
| 242 if (Type.typeinfoinvariant) | |
| 243 Type.typeinfoinvariant.error("%s", msg); | |
| 244 Type.typeinfoinvariant = this; | |
| 245 } | |
| 246 | |
| 247 if (id is Id.TypeInfo_Shared) | |
| 248 { | |
| 249 if (Type.typeinfoshared) | |
| 250 Type.typeinfoshared.error("%s", msg); | |
| 251 Type.typeinfoshared = this; | |
| 252 } | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 if (id is Id.Object_) | |
| 257 { | |
| 258 if (object) | |
| 259 object.error("%s", msg); | |
| 260 object = this; | |
| 261 } | |
| 262 | |
| 263 if (id is Id.ClassInfo) | |
| 264 { | |
| 265 if (classinfo) | |
| 266 classinfo.error("%s", msg); | |
| 267 classinfo = this; | |
| 268 } | |
| 269 | |
| 270 if (id is Id.ModuleInfo) | |
| 271 { | |
| 272 if (Module.moduleinfo) | |
| 273 Module.moduleinfo.error("%s", msg); | |
| 274 Module.moduleinfo = this; | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 com = 0; | |
| 279 isauto = false; | |
| 280 isabstract = false; | |
| 281 inuse = 0; | |
| 282 } | |
| 283 | |
| 284 override Dsymbol syntaxCopy(Dsymbol s) | |
| 285 { | |
| 286 ClassDeclaration cd; | |
| 287 | |
| 288 //printf("ClassDeclaration.syntaxCopy('%s')\n", toChars()); | |
| 289 if (s) | |
| 290 cd = cast(ClassDeclaration)s; | |
| 291 else | |
| 292 cd = new ClassDeclaration(loc, ident, null); | |
| 293 | |
| 294 cd.storage_class |= storage_class; | |
| 295 | |
| 296 cd.baseclasses.setDim(this.baseclasses.dim); | |
| 297 for (int i = 0; i < cd.baseclasses.dim; i++) | |
| 298 { | |
| 299 BaseClass b = cast(BaseClass)this.baseclasses.data[i]; | |
| 300 BaseClass b2 = new BaseClass(b.type.syntaxCopy(), b.protection); | |
| 301 cd.baseclasses.data[i] = cast(void*)b2; | |
| 302 } | |
| 303 | |
| 304 ScopeDsymbol.syntaxCopy(cd); | |
| 305 return cd; | |
| 306 } | |
| 307 | |
| 308 override void semantic(Scope sc) | |
| 309 { | |
| 310 int i; | |
| 311 uint offset; | |
| 312 | |
| 313 //printf("ClassDeclaration.semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 314 //printf("\tparent = %p, '%s'\n", sc.parent, sc.parent ? sc.parent.toChars() : ""); | |
| 315 //printf("sc.stc = %x\n", sc.stc); | |
| 316 | |
| 317 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 318 | |
| 319 if (!ident) // if anonymous class | |
| 320 { | |
| 321 string id = "__anonclass"; | |
| 322 ident = Identifier.generateId(id); | |
| 323 } | |
| 324 | |
| 325 if (!sc) | |
| 326 sc = scope_; | |
| 327 | |
| 328 if (!parent && sc.parent && !sc.parent.isModule()) | |
| 329 parent = sc.parent; | |
| 330 | |
| 331 type = type.semantic(loc, sc); | |
| 332 handle = type; | |
| 333 | |
| 334 if (!members) // if forward reference | |
| 335 { | |
| 336 //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 337 return; | |
| 338 } | |
| 339 if (symtab) | |
| 340 { if (!scope_) | |
| 341 { //printf("\tsemantic for '%s' is already completed\n", toChars()); | |
| 342 return; // semantic() already completed | |
| 343 } | |
| 344 } | |
| 345 else | |
| 346 symtab = new DsymbolTable(); | |
| 347 | |
| 348 Scope scx = null; | |
| 349 if (scope_) | |
| 350 { sc = scope_; | |
| 351 scx = scope_; // save so we don't make redundant copies | |
| 352 scope_ = null; | |
| 353 } | |
| 354 version (IN_GCC) { | |
| 355 methods.setDim(0); | |
| 356 } | |
| 357 | |
| 358 if (sc.stc & STC.STCdeprecated) | |
| 359 { | |
| 360 isdeprecated = 1; | |
| 361 } | |
| 362 | |
| 363 if (sc.linkage == LINK.LINKcpp) | |
| 364 error("cannot create C++ classes"); | |
| 365 | |
| 366 // Expand any tuples in baseclasses[] | |
| 367 for (i = 0; i < baseclasses.dim; ) | |
| 368 { | |
| 369 BaseClass b = cast(BaseClass)baseclasses.data[i]; | |
| 370 //printf("test1 %s %s\n", toChars(), b.type.toChars()); | |
| 371 b.type = b.type.semantic(loc, sc); | |
| 372 //printf("test2\n"); | |
| 373 Type tb = b.type.toBasetype(); | |
| 374 | |
| 375 if (tb.ty == TY.Ttuple) | |
| 376 { | |
| 377 TypeTuple tup = cast(TypeTuple)tb; | |
| 378 enum PROT protection = b.protection; | |
| 379 baseclasses.remove(i); | |
| 380 size_t dim = Argument.dim(tup.arguments); | |
| 381 for (size_t j = 0; j < dim; j++) | |
| 382 { | |
| 383 Argument arg = Argument.getNth(tup.arguments, j); | |
| 384 b = new BaseClass(arg.type, protection); | |
| 385 baseclasses.insert(i + j, cast(void*)b); | |
| 386 } | |
| 387 } | |
| 388 else | |
| 389 i++; | |
| 390 } | |
| 391 | |
| 392 // See if there's a base class as first in baseclasses[] | |
| 393 if (baseclasses.dim) | |
| 394 { | |
| 395 TypeClass tc; | |
| 396 BaseClass b; | |
| 397 Type tb; | |
| 398 | |
| 399 b = cast(BaseClass)baseclasses.data[0]; | |
| 400 //b.type = b.type.semantic(loc, sc); | |
| 401 tb = b.type.toBasetype(); | |
| 402 if (tb.ty != TY.Tclass) | |
| 403 { error("base type must be class or interface, not %s", b.type.toChars()); | |
| 404 baseclasses.remove(0); | |
| 405 } | |
| 406 else | |
| 407 { | |
| 408 tc = cast(TypeClass)(tb); | |
| 409 | |
| 410 if (tc.sym.isDeprecated()) | |
| 411 { | |
| 412 if (!isDeprecated()) | |
| 413 { | |
| 414 // Deriving from deprecated class makes this one deprecated too | |
| 415 isdeprecated = 1; | |
| 416 | |
| 417 tc.checkDeprecated(loc, sc); | |
| 418 } | |
| 419 } | |
| 420 | |
| 421 if (tc.sym.isInterfaceDeclaration()) { | |
| 422 ; | |
| 423 } else { | |
| 424 for (ClassDeclaration cdb = tc.sym; cdb; cdb = cdb.baseClass) | |
| 425 { | |
| 426 if (cdb == this) | |
| 427 { | |
| 428 error("circular inheritance"); | |
| 429 baseclasses.remove(0); | |
| 430 goto L7; | |
| 431 } | |
| 432 } | |
| 433 if (!tc.sym.symtab || tc.sym.sizeok == 0) | |
| 434 { // Try to resolve forward reference | |
| 435 if (sc.mustsemantic && tc.sym.scope_) | |
| 436 tc.sym.semantic(null); | |
| 437 } | |
| 438 if (!tc.sym.symtab || tc.sym.scope_ || tc.sym.sizeok == 0) | |
| 439 { | |
| 440 //printf("%s: forward reference of base class %s\n", toChars(), tc.sym.toChars()); | |
| 441 //error("forward reference of base class %s", baseClass.toChars()); | |
| 442 // Forward reference of base class, try again later | |
| 443 //printf("\ttry later, forward reference of base class %s\n", tc.sym.toChars()); | |
| 444 scope_ = scx ? scx : new Scope(sc); | |
| 445 scope_.setNoFree(); | |
| 446 if (tc.sym.scope_) | |
| 447 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 448 scope_.module_.addDeferredSemantic(this); | |
| 449 return; | |
| 450 } | |
| 451 else | |
| 452 { baseClass = tc.sym; | |
| 453 b.base = baseClass; | |
| 454 } | |
| 455 L7: ; | |
| 456 } | |
| 457 } | |
| 458 } | |
| 459 | |
| 460 // Treat the remaining entries in baseclasses as interfaces | |
| 461 // Check for errors, handle forward references | |
| 462 for (i = (baseClass ? 1 : 0); i < baseclasses.dim; ) | |
| 463 { TypeClass tc; | |
| 464 BaseClass b; | |
| 465 Type tb; | |
| 466 | |
| 467 b = cast(BaseClass)baseclasses.data[i]; | |
| 468 b.type = b.type.semantic(loc, sc); | |
| 469 tb = b.type.toBasetype(); | |
| 470 if (tb.ty == TY.Tclass) | |
| 471 tc = cast(TypeClass)tb; | |
| 472 else | |
| 473 tc = null; | |
| 474 if (!tc || !tc.sym.isInterfaceDeclaration()) | |
| 475 { | |
| 476 error("base type must be interface, not %s", b.type.toChars()); | |
| 477 baseclasses.remove(i); | |
| 478 continue; | |
| 479 } | |
| 480 else | |
| 481 { | |
| 482 if (tc.sym.isDeprecated()) | |
| 483 { | |
| 484 if (!isDeprecated()) | |
| 485 { | |
| 486 // Deriving from deprecated class makes this one deprecated too | |
| 487 isdeprecated = 1; | |
| 488 | |
| 489 tc.checkDeprecated(loc, sc); | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 // Check for duplicate interfaces | |
| 494 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 495 { | |
| 496 BaseClass b2 = cast(BaseClass)baseclasses.data[j]; | |
| 497 if (b2.base == tc.sym) | |
| 498 error("inherits from duplicate interface %s", b2.base.toChars()); | |
| 499 } | |
| 500 | |
| 501 if (!tc.sym.symtab) | |
| 502 { // Try to resolve forward reference | |
| 503 if (sc.mustsemantic && tc.sym.scope_) | |
| 504 tc.sym.semantic(null); | |
| 505 } | |
| 506 | |
| 507 b.base = tc.sym; | |
| 508 if (!b.base.symtab || b.base.scope_) | |
| 509 { | |
| 510 //error("forward reference of base class %s", baseClass.toChars()); | |
| 511 // Forward reference of base, try again later | |
| 512 //printf("\ttry later, forward reference of base %s\n", baseClass.toChars()); | |
| 513 scope_ = scx ? scx : new Scope(sc); | |
| 514 scope_.setNoFree(); | |
| 515 if (tc.sym.scope_) | |
| 516 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 517 scope_.module_.addDeferredSemantic(this); | |
| 518 return; | |
| 519 } | |
| 520 } | |
| 521 i++; | |
| 522 } | |
| 523 | |
| 524 | |
| 525 // If no base class, and this is not an Object, use Object as base class | |
| 526 if (!baseClass && ident !is Id.Object_) | |
| 527 { | |
| 528 // BUG: what if Object is redefined in an inner scope? | |
| 529 Type tbase = new TypeIdentifier(Loc(0), Id.Object_); | |
| 530 BaseClass b; | |
| 531 TypeClass tc; | |
| 532 Type bt; | |
| 533 | |
| 534 if (!object) | |
| 535 { | |
| 536 error("missing or corrupt object.d"); | |
| 537 fatal(); | |
| 538 } | |
| 539 bt = tbase.semantic(loc, sc).toBasetype(); | |
| 540 b = new BaseClass(bt, PROT.PROTpublic); | |
| 541 baseclasses.shift(cast(void*)b); | |
| 542 assert(b.type.ty == TY.Tclass); | |
| 543 tc = cast(TypeClass)(b.type); | |
| 544 baseClass = tc.sym; | |
| 545 assert(!baseClass.isInterfaceDeclaration()); | |
| 546 b.base = baseClass; | |
| 547 } | |
| 548 | |
| 549 interfaces_dim = baseclasses.dim; | |
| 550 interfaces = cast(BaseClass*)baseclasses.data; | |
| 551 | |
| 552 if (baseClass) | |
| 553 { | |
| 554 if (baseClass.storage_class & STC.STCfinal) | |
| 555 error("cannot inherit from final class %s", baseClass.toChars()); | |
| 556 | |
| 557 interfaces_dim--; | |
| 558 interfaces++; | |
| 559 | |
| 560 // Copy vtbl[] from base class | |
| 561 vtbl.setDim(baseClass.vtbl.dim); | |
| 562 memcpy(vtbl.data, baseClass.vtbl.data, (void*).sizeof * vtbl.dim); | |
| 563 | |
| 564 // Inherit properties from base class | |
| 565 com = baseClass.isCOMclass(); | |
| 566 isauto = baseClass.isauto; | |
| 567 vthis = baseClass.vthis; | |
| 568 storage_class |= baseClass.storage_class & STC.STC_TYPECTOR; | |
| 569 } | |
| 570 else | |
| 571 { | |
| 572 // No base class, so this is the root of the class hierarchy | |
| 573 vtbl.setDim(0); | |
| 574 vtbl.push(cast(void*)this); // leave room for classinfo as first member | |
| 575 } | |
| 576 | |
| 577 protection = sc.protection; | |
| 578 storage_class |= sc.stc; | |
| 579 | |
| 580 if (sizeok == 0) | |
| 581 { | |
| 582 interfaceSemantic(sc); | |
| 583 | |
| 584 for (i = 0; i < members.dim; i++) | |
| 585 { | |
| 586 Dsymbol s = cast(Dsymbol)members.data[i]; | |
| 587 s.addMember(sc, this, true); | |
| 588 } | |
| 589 | |
| 590 /* If this is a nested class, add the hidden 'this' | |
| 591 * member which is a pointer to the enclosing scope. | |
| 592 */ | |
| 593 if (vthis) // if inheriting from nested class | |
| 594 { // Use the base class's 'this' member | |
| 595 isnested = true; | |
| 596 if (storage_class & STC.STCstatic) | |
| 597 error("static class cannot inherit from nested class %s", baseClass.toChars()); | |
| 598 if (toParent2() != baseClass.toParent2()) | |
| 599 { | |
| 600 if (toParent2()) | |
| 601 { | |
| 602 error("is nested within %s, but super class %s is nested within %s", | |
| 603 toParent2().toChars(), | |
| 604 baseClass.toChars(), | |
| 605 baseClass.toParent2().toChars()); | |
| 606 } | |
| 607 else | |
| 608 { | |
| 609 error("is not nested, but super class %s is nested within %s", | |
| 610 baseClass.toChars(), | |
| 611 baseClass.toParent2().toChars()); | |
| 612 } | |
| 613 isnested = false; | |
| 614 } | |
| 615 } | |
| 616 else if (!(storage_class & STC.STCstatic)) | |
| 617 { | |
| 618 Dsymbol s = toParent2(); | |
| 619 if (s) | |
| 620 { | |
| 621 AggregateDeclaration ad = s.isClassDeclaration(); | |
| 622 FuncDeclaration fd = s.isFuncDeclaration(); | |
| 623 | |
| 624 if (ad || fd) | |
| 625 { isnested = true; | |
| 626 Type t; | |
| 627 if (ad) | |
| 628 t = ad.handle; | |
| 629 else if (fd) | |
| 630 { | |
| 631 AggregateDeclaration ad2 = fd.isMember2(); | |
| 632 if (ad2) | |
| 633 t = ad2.handle; | |
| 634 else | |
| 635 { | |
| 636 t = Type.tvoidptr; | |
| 637 } | |
| 638 } | |
| 639 else | |
| 640 assert(0); | |
| 641 if (t.ty == TY.Tstruct) // ref to struct | |
| 642 t = Type.tvoidptr; | |
| 643 assert(!vthis); | |
| 644 vthis = new ThisDeclaration(loc, t); | |
|
74
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Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
73
diff
changeset
|
645 members.push(vthis); |
| 73 | 646 } |
| 647 } | |
| 648 } | |
| 649 } | |
| 650 | |
| 651 if (storage_class & (STC.STCauto | STC.STCscope)) | |
| 652 isauto = true; | |
| 653 if (storage_class & STC.STCabstract) | |
| 654 isabstract = true; | |
| 655 if (storage_class & STC.STCimmutable) | |
| 656 type = type.invariantOf(); | |
| 657 else if (storage_class & STC.STCconst) | |
| 658 type = type.constOf(); | |
| 659 else if (storage_class & STC.STCshared) | |
| 660 type = type.sharedOf(); | |
| 661 | |
| 662 sc = sc.push(this); | |
| 663 sc.stc &= ~(STC.STCfinal | STC.STCauto | STC.STCscope | STC.STCstatic | | |
| 664 STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCtls | STC.STCgshared); | |
| 665 sc.stc |= storage_class & STC.STC_TYPECTOR; | |
| 666 sc.parent = this; | |
| 667 sc.inunion = 0; | |
| 668 | |
| 669 if (isCOMclass()) | |
| 670 { | |
| 671 version (_WIN32) { | |
| 672 sc.linkage = LINK.LINKwindows; | |
| 673 } else { | |
| 674 /* This enables us to use COM objects under Linux and | |
| 675 * work with things like XPCOM | |
| 676 */ | |
| 677 sc.linkage = LINK.LINKc; | |
| 678 } | |
| 679 } | |
| 680 sc.protection = PROT.PROTpublic; | |
| 681 sc.explicitProtection = 0; | |
| 682 sc.structalign = 8; | |
| 683 structalign = sc.structalign; | |
| 684 if (baseClass) | |
| 685 { sc.offset = baseClass.structsize; | |
| 686 alignsize = baseClass.alignsize; | |
| 687 // if (isnested) | |
| 688 // sc.offset += PTRSIZE; // room for uplevel context pointer | |
| 689 } | |
| 690 else | |
| 691 { sc.offset = PTRSIZE * 2; // allow room for __vptr and __monitor | |
| 692 alignsize = PTRSIZE; | |
| 693 } | |
| 694 structsize = sc.offset; | |
| 695 Scope scsave = sc; /// a copy must be created? | |
| 696 int members_dim = members.dim; | |
| 697 sizeok = 0; | |
| 698 for (i = 0; i < members_dim; i++) | |
| 699 { | |
| 700 Dsymbol s = cast(Dsymbol)members.data[i]; | |
| 701 s.semantic(sc); | |
| 702 } | |
| 703 | |
| 704 if (sizeok == 2) | |
| 705 { // semantic() failed because of forward references. | |
| 706 // Unwind what we did, and defer it for later | |
| 707 fields.setDim(0); | |
| 708 structsize = 0; | |
| 709 alignsize = 0; | |
| 710 structalign = 0; | |
| 711 | |
| 712 sc = sc.pop(); | |
| 713 | |
| 714 scope_ = scx ? scx : new Scope(sc); | |
| 715 scope_.setNoFree(); | |
| 716 scope_.module_.addDeferredSemantic(this); | |
| 717 | |
| 718 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); | |
| 719 return; | |
| 720 } | |
| 721 | |
| 722 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 723 | |
| 724 structsize = sc.offset; | |
| 725 //members.print(); | |
| 726 | |
| 727 /* Look for special member functions. | |
| 728 * They must be in this class, not in a base class. | |
| 729 */ | |
| 730 ctor = cast(CtorDeclaration)search(Loc(0), Id.ctor, 0); | |
| 731 if (ctor && (ctor.toParent() != this || !ctor.isCtorDeclaration())) | |
| 732 ctor = null; | |
| 733 | |
| 734 // dtor = (DtorDeclaration *)search(Id.dtor, 0); | |
| 735 // if (dtor && dtor.toParent() != this) | |
| 736 // dtor = null; | |
| 737 | |
| 738 // inv = (InvariantDeclaration *)search(Id.classInvariant, 0); | |
| 739 // if (inv && inv.toParent() != this) | |
| 740 // inv = null; | |
| 741 | |
| 742 // Can be in base class | |
| 743 aggNew = cast(NewDeclaration)search(Loc(0), Id.classNew, 0); | |
| 744 aggDelete = cast(DeleteDeclaration)search(Loc(0), Id.classDelete, 0); | |
| 745 | |
| 746 // If this class has no constructor, but base class does, create | |
| 747 // a constructor: | |
| 748 // this() { } | |
| 749 if (!ctor && baseClass && baseClass.ctor) | |
| 750 { | |
| 751 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 752 CtorDeclaration ctor = new CtorDeclaration(loc, Loc(0), null, 0); | |
| 753 ctor.fbody = new CompoundStatement(Loc(0), new Statements()); | |
|
74
7e0d548de9e6
Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
73
diff
changeset
|
754 members.push(ctor); |
| 73 | 755 ctor.addMember(sc, this, true); |
| 756 sc = scsave; // why? What about sc.nofree? /// | |
| 757 sc.offset = structsize; | |
| 758 ctor.semantic(sc); | |
| 759 this.ctor = ctor; | |
| 760 defaultCtor = ctor; | |
| 761 } | |
| 762 | |
| 763 static if (false) { | |
| 764 if (baseClass) | |
| 765 { if (!aggDelete) | |
| 766 aggDelete = baseClass.aggDelete; | |
| 767 if (!aggNew) | |
| 768 aggNew = baseClass.aggNew; | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 // Allocate instance of each new interface | |
| 773 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 774 { | |
| 775 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 776 uint thissize = PTRSIZE; | |
| 777 | |
| 778 alignmember(structalign, thissize, &sc.offset); | |
| 779 assert(b.offset == 0); | |
| 780 b.offset = sc.offset; | |
| 781 | |
| 782 // Take care of single inheritance offsets | |
| 783 while (b.baseInterfaces.length) | |
| 784 { | |
| 785 b = b.baseInterfaces[0]; | |
| 786 b.offset = sc.offset; | |
| 787 } | |
| 788 | |
| 789 sc.offset += thissize; | |
| 790 if (alignsize < thissize) | |
| 791 alignsize = thissize; | |
| 792 } | |
| 793 structsize = sc.offset; | |
| 794 sizeok = 1; | |
| 795 Module.dprogress++; | |
| 796 | |
| 797 dtor = buildDtor(sc); | |
| 798 | |
| 799 sc.pop(); | |
| 800 | |
| 801 static if (false) { // Do not call until toObjfile() because of forward references | |
| 802 // Fill in base class vtbl[]s | |
| 803 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 804 { | |
| 805 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 806 | |
| 807 //b.fillVtbl(this, &b.vtbl, 1); | |
| 808 } | |
| 809 } | |
| 810 //printf("-ClassDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 811 } | |
| 812 | |
| 813 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 814 { | |
| 815 if (!isAnonymous()) | |
| 816 { | |
| 817 buf.printf("%s ", kind()); | |
| 818 buf.writestring(toChars()); | |
| 819 if (baseclasses.dim) | |
| 820 buf.writestring(" : "); | |
| 821 } | |
| 822 for (int i = 0; i < baseclasses.dim; i++) | |
| 823 { | |
| 824 BaseClass b = cast(BaseClass)baseclasses.data[i]; | |
| 825 | |
| 826 if (i) | |
| 827 buf.writeByte(','); | |
| 828 //buf.writestring(b.base.ident.toChars()); | |
| 829 b.type.toCBuffer(buf, null, hgs); | |
| 830 } | |
| 831 if (members) | |
| 832 { | |
| 833 buf.writenl(); | |
| 834 buf.writeByte('{'); | |
| 835 buf.writenl(); | |
| 836 for (int i = 0; i < members.dim; i++) | |
| 837 { | |
| 838 Dsymbol s = cast(Dsymbol)members.data[i]; | |
| 839 | |
| 840 buf.writestring(" "); | |
| 841 s.toCBuffer(buf, hgs); | |
| 842 } | |
| 843 buf.writestring("}"); | |
| 844 } | |
| 845 else | |
| 846 buf.writeByte(';'); | |
| 847 buf.writenl(); | |
| 848 } | |
| 849 | |
| 850 /********************************************* | |
| 851 * Determine if 'this' is a base class of cd. | |
| 852 * This is used to detect circular inheritance only. | |
| 853 */ | |
| 854 int isBaseOf2(ClassDeclaration cd) | |
| 855 { | |
| 856 if (!cd) | |
| 857 return 0; | |
| 858 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 859 for (int i = 0; i < cd.baseclasses.dim; i++) | |
| 860 { | |
| 861 BaseClass b = cast(BaseClass)cd.baseclasses.data[i]; | |
| 862 | |
| 863 if (b.base is this || isBaseOf2(b.base)) | |
| 864 return 1; | |
| 865 } | |
| 866 return 0; | |
| 867 } | |
| 868 | |
| 869 /******************************************* | |
| 870 * Determine if 'this' is a base class of cd. | |
| 871 */ | |
| 872 /// #define OFFSET_RUNTIME 0x76543210 | |
| 873 bool isBaseOf(ClassDeclaration cd, int* poffset) | |
| 874 { | |
| 875 if (!cd) | |
| 876 return 0; | |
| 877 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 878 for (int i = 0; i < cd.baseclasses.dim; i++) | |
| 879 { | |
| 880 BaseClass b = cast(BaseClass)cd.baseclasses.data[i]; | |
| 881 | |
| 882 if (b.base == this || isBaseOf2(b.base)) | |
| 883 return 1; | |
| 884 } | |
| 885 | |
| 886 return 0; | |
| 887 } | |
| 888 | |
| 889 override Dsymbol search(Loc, Identifier ident, int flags) | |
| 890 { | |
| 891 Dsymbol s; | |
| 892 //printf("%s.ClassDeclaration.search('%s')\n", toChars(), ident.toChars()); | |
| 893 | |
| 894 if (scope_) | |
| 895 { | |
| 896 Scope sc = scope_; | |
| 897 sc.mustsemantic++; | |
| 898 semantic(sc); | |
| 899 sc.mustsemantic--; | |
| 900 } | |
| 901 | |
| 902 if (!members || !symtab || scope_) | |
| 903 { | |
| 904 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 905 //*(char*)0=0; | |
| 906 return null; | |
| 907 } | |
| 908 | |
| 909 s = ScopeDsymbol.search(loc, ident, flags); | |
| 910 if (!s) | |
| 911 { | |
| 912 // Search bases classes in depth-first, left to right order | |
| 913 | |
| 914 int i; | |
| 915 | |
| 916 for (i = 0; i < baseclasses.dim; i++) | |
| 917 { | |
| 918 BaseClass b = cast(BaseClass)baseclasses.data[i]; | |
| 919 | |
| 920 if (b.base) | |
| 921 { | |
| 922 if (!b.base.symtab) | |
| 923 error("base %s is forward referenced", b.base.ident.toChars()); | |
| 924 else | |
| 925 { | |
| 926 s = b.base.search(loc, ident, flags); | |
| 927 if (s is this) // happens if s is nested in this and derives from this | |
| 928 s = null; | |
| 929 else if (s) | |
| 930 break; | |
| 931 } | |
| 932 } | |
| 933 } | |
| 934 } | |
| 935 return s; | |
| 936 } | |
| 937 | |
| 938 version (DMDV2) { | |
| 939 bool isFuncHidden(FuncDeclaration fd) | |
| 940 { | |
| 941 //printf("ClassDeclaration::isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toChars()); | |
| 942 Dsymbol s = search(Loc(0), fd.ident, 4|2); | |
| 943 if (!s) | |
| 944 { | |
| 945 //printf("not found\n"); | |
| 946 /* Because, due to a hack, if there are multiple definitions | |
| 947 * of fd.ident, null is returned. | |
| 948 */ | |
| 949 return false; | |
| 950 } | |
| 951 | |
| 952 Param p; p.fd = fd; | |
| 953 | |
| 954 s = s.toAlias(); | |
| 955 OverloadSet os = s.isOverloadSet(); | |
| 956 if (os) | |
| 957 { | |
| 958 for (int i = 0; i < os.a.dim; i++) | |
| 959 { | |
| 960 Dsymbol s2 = cast(Dsymbol)os.a.data[i]; | |
| 961 FuncDeclaration f2 = s2.isFuncDeclaration(); | |
| 962 if (f2 && overloadApply(f2, &p.isf, &p)) | |
| 963 return false; | |
| 964 } | |
| 965 return true; | |
| 966 } | |
| 967 else | |
| 968 { | |
| 969 FuncDeclaration fdstart = s.isFuncDeclaration(); | |
| 970 //printf("%s fdstart = %p\n", s.kind(), fdstart); | |
| 971 return !overloadApply(fdstart, &p.isf, &p); | |
| 972 } | |
| 973 } | |
| 974 } | |
| 975 FuncDeclaration findFunc(Identifier ident, TypeFunction tf) | |
| 976 { | |
| 977 //printf("ClassDeclaration.findFunc(%s, %s) %s\n", ident.toChars(), tf.toChars(), toChars()); | |
| 978 | |
| 979 ClassDeclaration cd = this; | |
| 980 Array vtbl = cd.vtbl; | |
| 981 while (true) | |
| 982 { | |
| 983 for (size_t i = 0; i < vtbl.dim; i++) | |
| 984 { | |
| 985 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 986 if (!fd) | |
| 987 continue; // the first entry might be a ClassInfo | |
| 988 | |
| 989 //printf("\t[%d] = %s\n", i, fd.toChars()); | |
| 990 if (ident == fd.ident && | |
| 991 //tf.equals(fd.type) | |
| 992 fd.type.covariant(tf) == 1 | |
| 993 ) | |
| 994 { //printf("\t\tfound\n"); | |
| 995 return fd; | |
| 996 } | |
| 997 //else printf("\t\t%d\n", fd.type.covariant(tf)); | |
| 998 } | |
| 999 if (!cd) | |
| 1000 break; | |
| 1001 | |
| 1002 vtbl = cd.vtblFinal; | |
| 1003 cd = cd.baseClass; | |
| 1004 } | |
| 1005 | |
| 1006 return null; | |
| 1007 } | |
| 1008 | |
| 1009 void interfaceSemantic(Scope sc) | |
| 1010 { | |
| 1011 InterfaceDeclaration id = isInterfaceDeclaration(); | |
| 1012 | |
| 1013 vtblInterfaces = new BaseClasses(); | |
| 1014 vtblInterfaces.reserve(interfaces_dim); | |
| 1015 | |
| 1016 for (size_t i = 0; i < interfaces_dim; i++) | |
| 1017 { | |
| 1018 BaseClass b = interfaces[i]; | |
| 1019 | |
| 1020 // If this is an interface, and it derives from a COM interface, | |
| 1021 // then this is a COM interface too. | |
| 1022 if (b.base.isCOMinterface()) | |
| 1023 com = 1; | |
| 1024 | |
| 1025 if (b.base.isCPPinterface() && id) | |
| 1026 id.cpp = 1; | |
| 1027 | |
| 1028 vtblInterfaces.push(cast(void*)b); | |
| 1029 b.copyBaseInterfaces(vtblInterfaces); | |
| 1030 } | |
| 1031 } | |
| 1032 | |
| 1033 bool isCOMclass() | |
| 1034 { | |
| 1035 return com; | |
| 1036 } | |
| 1037 | |
| 1038 bool isCOMinterface() | |
| 1039 { | |
| 1040 return false; | |
| 1041 } | |
| 1042 | |
| 1043 version (DMDV2) { | |
| 1044 bool isCPPinterface() | |
| 1045 { | |
| 1046 return false; | |
| 1047 } | |
| 1048 } | |
| 1049 bool isAbstract() | |
| 1050 { | |
| 1051 if (isabstract) | |
| 1052 return true; | |
| 1053 | |
| 1054 for (int i = 1; i < vtbl.dim; i++) | |
| 1055 { | |
| 1056 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1057 | |
| 1058 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1059 if (!fd || fd.isAbstract()) | |
| 1060 { | |
| 1061 isabstract = true; | |
| 1062 return true; | |
| 1063 } | |
| 1064 } | |
| 1065 | |
| 1066 return false; | |
| 1067 } | |
| 1068 | |
| 1069 int vtblOffset() | |
| 1070 { | |
| 1071 assert(false); | |
| 1072 } | |
| 1073 | |
| 1074 override string kind() | |
| 1075 { | |
| 1076 return "class"; | |
| 1077 } | |
| 1078 | |
| 1079 override string mangle() | |
| 1080 { | |
| 1081 Dsymbol parentsave = parent; | |
| 1082 | |
| 1083 //printf("ClassDeclaration.mangle() %s.%s\n", parent.toChars(), toChars()); | |
| 1084 | |
| 1085 /* These are reserved to the compiler, so keep simple | |
| 1086 * names for them. | |
| 1087 */ | |
| 1088 if (ident is Id.Exception) | |
| 1089 { | |
| 1090 if (parent.ident is Id.object) | |
| 1091 parent = null; | |
| 1092 } | |
| 1093 else if (ident is Id.TypeInfo || | |
| 1094 // ident is Id.Exception || | |
| 1095 ident is Id.TypeInfo_Struct || | |
| 1096 ident is Id.TypeInfo_Class || | |
| 1097 ident is Id.TypeInfo_Typedef || | |
| 1098 ident is Id.TypeInfo_Tuple || | |
| 1099 this is object || | |
| 1100 this is classinfo || | |
| 1101 this is Module.moduleinfo || | |
| 1102 ident.toChars().startsWith("TypeInfo_") | |
| 1103 ) | |
| 1104 { | |
| 1105 parent = null; | |
| 1106 } | |
| 1107 | |
| 1108 string id = Dsymbol.mangle(); | |
| 1109 parent = parentsave; | |
| 1110 return id; | |
| 1111 } | |
| 1112 | |
| 1113 override void toDocBuffer(OutBuffer buf) | |
| 1114 { | |
| 1115 assert(false); | |
| 1116 } | |
| 1117 | |
| 1118 override PROT getAccess(Dsymbol smember) // determine access to smember | |
| 1119 { | |
| 1120 PROT access_ret = PROT.PROTnone; | |
| 1121 | |
| 1122 version (LOG) { | |
| 1123 printf("+ClassDeclaration::getAccess(this = '%s', smember = '%s')\n", | |
| 1124 toChars(), smember.toChars()); | |
| 1125 } | |
| 1126 if (smember.toParent() is this) | |
| 1127 { | |
| 1128 access_ret = smember.prot(); | |
| 1129 } | |
| 1130 else | |
| 1131 { | |
| 1132 PROT access; | |
| 1133 int i; | |
| 1134 | |
| 1135 if (smember.isDeclaration().isStatic()) | |
| 1136 { | |
| 1137 access_ret = smember.prot(); | |
| 1138 } | |
| 1139 | |
| 1140 for (i = 0; i < baseclasses.dim; i++) | |
| 1141 { | |
| 1142 BaseClass b = cast(BaseClass)baseclasses.data[i]; | |
| 1143 | |
| 1144 access = b.base.getAccess(smember); | |
| 1145 switch (access) | |
| 1146 { | |
| 1147 case PROT.PROTnone: | |
| 1148 break; | |
| 1149 | |
| 1150 case PROT.PROTprivate: | |
| 1151 access = PROT.PROTnone; // private members of base class not accessible | |
| 1152 break; | |
| 1153 | |
| 1154 case PROT.PROTpackage: | |
| 1155 case PROT.PROTprotected: | |
| 1156 case PROT.PROTpublic: | |
| 1157 case PROT.PROTexport: | |
| 1158 // If access is to be tightened | |
| 1159 if (b.protection < access) | |
| 1160 access = b.protection; | |
| 1161 | |
| 1162 // Pick path with loosest access | |
| 1163 if (access > access_ret) | |
| 1164 access_ret = access; | |
| 1165 break; | |
| 1166 | |
| 1167 default: | |
| 1168 assert(0); | |
| 1169 } | |
| 1170 } | |
| 1171 } | |
| 1172 | |
| 1173 version (LOG) { | |
| 1174 printf("-ClassDeclaration::getAccess(this = '%s', smember = '%s') = %d\n", | |
| 1175 toChars(), smember.toChars(), access_ret); | |
| 1176 } | |
| 1177 | |
| 1178 return access_ret; | |
| 1179 } | |
| 1180 | |
| 1181 override void addLocalClass(ClassDeclarations aclasses) | |
| 1182 { | |
| 1183 aclasses.push(cast(void*)this); | |
| 1184 } | |
| 1185 | |
| 1186 // Back end | |
| 1187 override void toObjFile(int multiobj) // compile to .obj file | |
| 1188 { | |
| 1189 uint i; | |
| 1190 uint offset; | |
| 1191 Symbol* sinit; | |
| 1192 enum_SC scclass; | |
| 1193 | |
| 1194 //printf("ClassDeclaration.toObjFile('%s')\n", toChars()); | |
| 1195 | |
| 1196 if (!members) | |
| 1197 return; | |
| 1198 | |
| 1199 if (multiobj) | |
| 1200 { | |
| 1201 obj_append(this); | |
| 1202 return; | |
| 1203 } | |
| 1204 | |
| 1205 if (global.params.symdebug) | |
| 1206 toDebug(); | |
| 1207 | |
| 1208 assert(!scope_); // semantic() should have been run to completion | |
| 1209 | |
| 1210 scclass = SCglobal; | |
| 1211 if (inTemplateInstance()) | |
| 1212 scclass = SCcomdat; | |
| 1213 | |
| 1214 // Put out the members | |
| 1215 for (i = 0; i < members.dim; i++) | |
| 1216 { | |
| 1217 Dsymbol member; | |
| 1218 | |
| 1219 member = cast(Dsymbol)members.data[i]; | |
| 1220 member.toObjFile(0); | |
| 1221 } | |
| 1222 | |
| 1223 static if (false) { | |
| 1224 // Build destructor by aggregating dtors[] | |
| 1225 Symbol* sdtor; | |
| 1226 switch (dtors.dim) | |
| 1227 { | |
| 1228 case 0: | |
| 1229 // No destructors for this class | |
| 1230 sdtor = null; | |
| 1231 break; | |
| 1232 | |
| 1233 case 1: | |
| 1234 // One destructor, just use it directly | |
| 1235 sdtor = (cast(DtorDeclaration)dtors.data[0]).toSymbol(); | |
| 1236 break; | |
| 1237 | |
| 1238 default: | |
| 1239 { | |
| 1240 /* Build a destructor that calls all the | |
| 1241 * other destructors in dtors[]. | |
| 1242 */ | |
| 1243 | |
| 1244 elem* edtor = null; | |
| 1245 | |
| 1246 // Declare 'this' pointer for our new destructor | |
| 1247 Symbol* sthis = symbol_calloc("this"); | |
| 1248 sthis.Stype = type_fake(TYnptr); | |
| 1249 sthis.Stype.Tcount++; | |
| 1250 sthis.Sclass = SCfastpar; | |
| 1251 sthis.Spreg = AX; | |
| 1252 sthis.Sfl = FLauto; | |
| 1253 | |
| 1254 // Call each of the destructors in dtors[] | |
| 1255 // in reverse order | |
| 1256 for (i = 0; i < dtors.dim; i++) | |
| 1257 { | |
| 1258 DtorDeclaration d = cast(DtorDeclaration)dtors.data[i]; | |
| 1259 Symbol* s = d.toSymbol(); | |
| 1260 elem* e = el_bin(OPcall, TYvoid, el_var(s), el_var(sthis)); | |
| 1261 edtor = el_combine(e, edtor); | |
| 1262 } | |
| 1263 | |
| 1264 // Create type for the function | |
| 1265 .type* t = type_alloc(TYjfunc); | |
| 1266 t.Tflags |= TFprototype | TFfixed; | |
| 1267 t.Tmangle = mTYman_d; | |
| 1268 t.Tnext = tsvoid; | |
| 1269 tsvoid.Tcount++; | |
| 1270 | |
| 1271 // Create the function, sdtor, and write it out | |
| 1272 localgot = null; | |
| 1273 sdtor = toSymbolX("__dtor", SCglobal, t, "FZv"); | |
| 1274 block* b = block_calloc(); | |
| 1275 b.BC = BCret; | |
| 1276 b.Belem = edtor; | |
| 1277 sdtor.Sfunc.Fstartblock = b; | |
| 1278 cstate.CSpsymtab = &sdtor.Sfunc.Flocsym; | |
| 1279 symbol_add(sthis); | |
| 1280 writefunc(sdtor); | |
| 1281 } | |
| 1282 } | |
| 1283 } | |
| 1284 | |
| 1285 // Generate C symbols | |
| 1286 toSymbol(); | |
| 1287 toVtblSymbol(); | |
| 1288 sinit = toInitializer(); | |
| 1289 | |
| 1290 ////////////////////////////////////////////// | |
| 1291 | |
| 1292 // Generate static initializer | |
| 1293 sinit.Sclass = scclass; | |
| 1294 sinit.Sfl = FLdata; | |
| 1295 version (ELFOBJ) { // Burton | |
| 1296 sinit.Sseg = Segment.CDATA; | |
| 1297 } | |
| 1298 version (MACHOBJ) { | |
| 1299 sinit.Sseg = Segment.DATA; | |
| 1300 } | |
| 1301 toDt(&sinit.Sdt); | |
| 1302 outdata(sinit); | |
| 1303 | |
| 1304 ////////////////////////////////////////////// | |
| 1305 | |
| 1306 // Put out the TypeInfo | |
| 1307 type.getTypeInfo(null); | |
| 1308 type.vtinfo.toObjFile(multiobj); | |
| 1309 | |
| 1310 ////////////////////////////////////////////// | |
| 1311 | |
| 1312 // Put out the ClassInfo | |
| 1313 csym.Sclass = scclass; | |
| 1314 csym.Sfl = FLdata; | |
| 1315 | |
| 1316 /* The layout is: | |
| 1317 { | |
| 1318 void **vptr; | |
| 1319 monitor_t monitor; | |
| 1320 byte[] initializer; // static initialization data | |
| 1321 char[] name; // class name | |
| 1322 void *[] vtbl; | |
| 1323 Interface[] interfaces; | |
| 1324 ClassInfo *base; // base class | |
| 1325 void *destructor; | |
| 1326 void *invariant; // class invariant | |
| 1327 uint flags; | |
| 1328 void *deallocator; | |
| 1329 OffsetTypeInfo[] offTi; | |
| 1330 void *defaultConstructor; | |
| 1331 const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function | |
| 1332 TypeInfo typeinfo; | |
| 1333 } | |
| 1334 */ | |
| 1335 dt_t* dt = null; | |
| 1336 offset = CLASSINFO_SIZE; // must be ClassInfo.size | |
| 1337 if (classinfo) | |
| 1338 { | |
| 1339 if (classinfo.structsize != CLASSINFO_SIZE) | |
| 1340 error("D compiler and phobos' object.d are mismatched"); | |
| 1341 } | |
| 1342 | |
| 1343 if (classinfo) | |
| 1344 dtxoff(&dt, classinfo.toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo | |
| 1345 else | |
| 1346 dtdword(&dt, 0); // BUG: should be an assert() | |
| 1347 | |
| 1348 dtdword(&dt, 0); // monitor | |
| 1349 | |
| 1350 // initializer[] | |
| 1351 assert(structsize >= 8); | |
| 1352 dtdword(&dt, structsize); // size | |
| 1353 dtxoff(&dt, sinit, 0, TYnptr); // initializer | |
| 1354 | |
| 1355 // name[] | |
| 1356 string name = ident.toChars(); | |
| 1357 size_t namelen = name.length; | |
| 1358 if (!(namelen > 9 && name[0..9] == "TypeInfo_")) | |
| 1359 { | |
| 1360 name = toPrettyChars(); | |
| 1361 namelen = name.length; | |
| 1362 } | |
| 1363 dtdword(&dt, namelen); | |
| 1364 dtabytes(&dt, TYnptr, 0, namelen + 1, toStringz(name)); | |
| 1365 | |
| 1366 // vtbl[] | |
| 1367 dtdword(&dt, vtbl.dim); | |
| 1368 dtxoff(&dt, vtblsym, 0, TYnptr); | |
| 1369 | |
| 1370 // interfaces[] | |
| 1371 dtdword(&dt, vtblInterfaces.dim); | |
| 1372 if (vtblInterfaces.dim) | |
| 1373 dtxoff(&dt, csym, offset, TYnptr); // (*) | |
| 1374 else | |
| 1375 dtdword(&dt, 0); | |
| 1376 | |
| 1377 // base | |
| 1378 if (baseClass) | |
| 1379 dtxoff(&dt, baseClass.toSymbol(), 0, TYnptr); | |
| 1380 else | |
| 1381 dtdword(&dt, 0); | |
| 1382 | |
| 1383 // destructor | |
| 1384 if (dtor) | |
| 1385 dtxoff(&dt, dtor.toSymbol(), 0, TYnptr); | |
| 1386 else | |
| 1387 dtdword(&dt, 0); | |
| 1388 | |
| 1389 // invariant | |
| 1390 if (inv) | |
| 1391 dtxoff(&dt, inv.toSymbol(), 0, TYnptr); | |
| 1392 else | |
| 1393 dtdword(&dt, 0); | |
| 1394 | |
| 1395 // flags | |
| 1396 int flags = 4 | isCOMclass(); | |
| 1397 version (DMDV2) { | |
| 1398 flags |= 16; | |
| 1399 } | |
| 1400 flags |= 32; | |
| 1401 | |
| 1402 if (ctor) | |
| 1403 flags |= 8; | |
| 1404 for (ClassDeclaration cd = this; cd; cd = cd.baseClass) | |
| 1405 { | |
| 1406 if (cd.members) | |
| 1407 { | |
| 1408 for (size_t j = 0; j < cd.members.dim; j++) | |
| 1409 { | |
| 1410 Dsymbol sm = cast(Dsymbol)cd.members.data[j]; | |
| 1411 //printf("sm = %s %s\n", sm.kind(), sm.toChars()); | |
| 1412 if (sm.hasPointers()) | |
| 1413 goto L2; | |
| 1414 } | |
| 1415 } | |
| 1416 } | |
| 1417 flags |= 2; // no pointers | |
| 1418 L2: | |
| 1419 dtdword(&dt, flags); | |
| 1420 | |
| 1421 | |
| 1422 // deallocator | |
| 1423 if (aggDelete) | |
| 1424 dtxoff(&dt, aggDelete.toSymbol(), 0, TYnptr); | |
| 1425 else | |
| 1426 dtdword(&dt, 0); | |
| 1427 | |
| 1428 // offTi[] | |
| 1429 dtdword(&dt, 0); | |
| 1430 dtdword(&dt, 0); // null for now, fix later | |
| 1431 | |
| 1432 // defaultConstructor | |
| 1433 if (defaultCtor) | |
| 1434 dtxoff(&dt, defaultCtor.toSymbol(), 0, TYnptr); | |
| 1435 else | |
| 1436 dtdword(&dt, 0); | |
| 1437 | |
| 1438 version (DMDV2) { | |
| 1439 FuncDeclaration sgetmembers = findGetMembers(); | |
| 1440 if (sgetmembers) | |
| 1441 dtxoff(&dt, sgetmembers.toSymbol(), 0, TYnptr); | |
| 1442 else | |
| 1443 dtdword(&dt, 0); // module getMembers() function | |
| 1444 } | |
| 1445 | |
| 1446 dtxoff(&dt, type.vtinfo.toSymbol(), 0, TYnptr); // typeinfo | |
| 1447 //dtdword(&dt, 0); | |
| 1448 | |
| 1449 ////////////////////////////////////////////// | |
| 1450 | |
| 1451 // Put out vtblInterfaces.data[]. Must immediately follow csym, because | |
| 1452 // of the fixup (*) | |
| 1453 | |
| 1454 offset += vtblInterfaces.dim * (4 * PTRSIZE); | |
| 1455 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1456 { | |
| 1457 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1458 ClassDeclaration id = b.base; | |
| 1459 | |
| 1460 /* The layout is: | |
| 1461 * { | |
| 1462 * ClassInfo *interface; | |
| 1463 * void *[] vtbl; | |
| 1464 * unsigned offset; | |
| 1465 * } | |
| 1466 */ | |
| 1467 | |
| 1468 // Fill in vtbl[] | |
| 1469 b.fillVtbl(this, b.vtbl, 1); | |
| 1470 | |
| 1471 dtxoff(&dt, id.toSymbol(), 0, TYnptr); // ClassInfo | |
| 1472 | |
| 1473 // vtbl[] | |
| 1474 dtdword(&dt, id.vtbl.dim); | |
| 1475 dtxoff(&dt, csym, offset, TYnptr); | |
| 1476 | |
| 1477 dtdword(&dt, b.offset); // this offset | |
| 1478 | |
| 1479 offset += id.vtbl.dim * PTRSIZE; | |
| 1480 } | |
| 1481 | |
| 1482 // Put out the vtblInterfaces.data[].vtbl[] | |
| 1483 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1484 //printf("putting out %d interface vtbl[]s for '%s'\n", vtblInterfaces.dim, toChars()); | |
| 1485 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1486 { | |
| 1487 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1488 ClassDeclaration id = b.base; | |
| 1489 int j; | |
| 1490 | |
| 1491 //printf(" interface[%d] is '%s'\n", i, id.toChars()); | |
| 1492 j = 0; | |
| 1493 if (id.vtblOffset()) | |
| 1494 { | |
| 1495 // First entry is ClassInfo reference | |
| 1496 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1497 | |
| 1498 // First entry is struct Interface reference | |
| 1499 dtxoff(&dt, csym, CLASSINFO_SIZE + i * (4 * PTRSIZE), TYnptr); | |
| 1500 j = 1; | |
| 1501 } | |
| 1502 | |
| 1503 assert(id.vtbl.dim == b.vtbl.dim); | |
| 1504 for (; j < id.vtbl.dim; j++) | |
| 1505 { | |
| 1506 FuncDeclaration fd; | |
| 1507 | |
| 1508 assert(j < b.vtbl.dim); | |
| 1509 static if (false) { | |
| 1510 Object o = cast(Object)b.vtbl.data[j]; | |
| 1511 if (o) | |
| 1512 { | |
| 1513 printf("o = %p\n", o); | |
| 1514 assert(o.dyncast() == DYNCAST_DSYMBOL); | |
| 1515 Dsymbol s = cast(Dsymbol)o; | |
| 1516 printf("s.kind() = '%s'\n", s.kind()); | |
| 1517 } | |
| 1518 } | |
| 1519 fd = cast(FuncDeclaration)b.vtbl.data[j]; | |
| 1520 if (fd) | |
| 1521 dtxoff(&dt, fd.toThunkSymbol(b.offset), 0, TYnptr); | |
| 1522 else | |
| 1523 dtdword(&dt, 0); | |
| 1524 } | |
| 1525 } | |
| 1526 | |
| 1527 static if (true) { | |
| 1528 // Put out the overriding interface vtbl[]s. | |
| 1529 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1530 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1531 ClassDeclaration cd; | |
| 1532 scope Array bvtbl = new Array(); | |
| 1533 | |
| 1534 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1535 { | |
| 1536 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1537 { | |
| 1538 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1539 | |
| 1540 if (bs.fillVtbl(this, bvtbl, 0)) | |
| 1541 { | |
| 1542 //printf("\toverriding vtbl[] for %s\n", bs.base.toChars()); | |
| 1543 ClassDeclaration id = bs.base; | |
| 1544 int j; | |
| 1545 | |
| 1546 j = 0; | |
| 1547 if (id.vtblOffset()) | |
| 1548 { | |
| 1549 // First entry is ClassInfo reference | |
| 1550 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1551 | |
| 1552 // First entry is struct Interface reference | |
| 1553 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1554 j = 1; | |
| 1555 } | |
| 1556 | |
| 1557 for (; j < id.vtbl.dim; j++) | |
| 1558 { | |
| 1559 assert(j < bvtbl.dim); | |
| 1560 FuncDeclaration fd = cast(FuncDeclaration)bvtbl.data[j]; | |
| 1561 if (fd) | |
| 1562 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1563 else | |
| 1564 dtdword(&dt, 0); | |
| 1565 } | |
| 1566 } | |
| 1567 } | |
| 1568 } | |
| 1569 } | |
| 1570 | |
| 1571 version (INTERFACE_VIRTUAL) { | |
| 1572 // Put out the overriding interface vtbl[]s. | |
| 1573 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1574 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1575 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1576 { | |
| 1577 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1578 ClassDeclaration cd; | |
| 1579 | |
| 1580 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1581 { | |
| 1582 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1583 { | |
| 1584 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1585 | |
| 1586 if (b.base == bs.base) | |
| 1587 { | |
| 1588 //printf("\toverriding vtbl[] for %s\n", b.base.toChars()); | |
| 1589 ClassDeclaration id = b.base; | |
| 1590 int j; | |
| 1591 | |
| 1592 j = 0; | |
| 1593 if (id.vtblOffset()) | |
| 1594 { | |
| 1595 // First entry is ClassInfo reference | |
| 1596 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1597 | |
| 1598 // First entry is struct Interface reference | |
| 1599 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1600 j = 1; | |
| 1601 } | |
| 1602 | |
| 1603 for (; j < id.vtbl.dim; j++) | |
| 1604 { | |
| 1605 assert(j < b.vtbl.dim); | |
| 1606 FuncDeclaration fd = cast(FuncDeclaration)b.vtbl.data[j]; | |
| 1607 if (fd) | |
| 1608 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1609 else | |
| 1610 dtdword(&dt, 0); | |
| 1611 } | |
| 1612 } | |
| 1613 } | |
| 1614 } | |
| 1615 } | |
| 1616 } | |
| 1617 | |
| 1618 | |
| 1619 csym.Sdt = dt; | |
| 1620 version (ELFOBJ_OR_MACHOBJ) { // Burton | |
| 1621 // ClassInfo cannot be const data, because we use the monitor on it | |
| 1622 csym.Sseg = Segment.DATA; | |
| 1623 } | |
| 1624 outdata(csym); | |
| 1625 if (isExport()) | |
| 1626 obj_export(csym,0); | |
| 1627 | |
| 1628 ////////////////////////////////////////////// | |
| 1629 | |
| 1630 // Put out the vtbl[] | |
| 1631 //printf("putting out %s.vtbl[]\n", toChars()); | |
| 1632 dt = null; | |
| 1633 if (0) | |
| 1634 i = 0; | |
| 1635 else | |
| 1636 { | |
| 1637 dtxoff(&dt, csym, 0, TYnptr); // first entry is ClassInfo reference | |
| 1638 i = 1; | |
| 1639 } | |
| 1640 for (; i < vtbl.dim; i++) | |
| 1641 { | |
| 1642 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1643 | |
| 1644 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1645 if (fd && (fd.fbody || !isAbstract())) | |
| 1646 { | |
| 1647 Symbol* s = fd.toSymbol(); | |
| 1648 | |
| 1649 version (DMDV2) { | |
| 1650 if (isFuncHidden(fd)) | |
| 1651 { | |
| 1652 /* fd is hidden from the view of this class. | |
| 1653 * If fd overlaps with any function in the vtbl[], then | |
| 1654 * issue 'hidden' error. | |
| 1655 */ | |
| 1656 for (int j = 1; j < vtbl.dim; j++) | |
| 1657 { | |
| 1658 if (j == i) | |
| 1659 continue; | |
| 1660 FuncDeclaration fd2 = (cast(Dsymbol)vtbl.data[j]).isFuncDeclaration(); | |
| 1661 if (!fd2.ident.equals(fd.ident)) | |
| 1662 continue; | |
| 1663 if (fd.leastAsSpecialized(fd2) || fd2.leastAsSpecialized(fd)) | |
| 1664 { | |
| 1665 if (global.params.warnings) | |
| 1666 { | |
| 1667 TypeFunction tf = cast(TypeFunction)fd.type; | |
| 1668 if (tf.ty == Tfunction) | |
| 1669 warning("%s%s is hidden by %s\n", fd.toPrettyChars(), Argument.argsTypesToChars(tf.parameters, tf.varargs), toChars()); | |
| 1670 else | |
| 1671 warning("%s is hidden by %s\n", fd.toPrettyChars(), toChars()); | |
| 1672 } | |
| 1673 s = rtlsym[RTLSYM_DHIDDENFUNC]; | |
| 1674 break; | |
| 1675 } | |
| 1676 } | |
| 1677 } | |
| 1678 } | |
| 1679 dtxoff(&dt, s, 0, TYnptr); | |
| 1680 } | |
| 1681 else | |
| 1682 dtdword(&dt, 0); | |
| 1683 } | |
| 1684 | |
| 1685 vtblsym.Sdt = dt; | |
| 1686 vtblsym.Sclass = scclass; | |
| 1687 vtblsym.Sfl = FLdata; | |
| 1688 version (ELFOBJ) { | |
| 1689 vtblsym.Sseg = Segment.CDATA; | |
| 1690 } | |
| 1691 version (MACHOBJ) { | |
| 1692 vtblsym.Sseg = Segment.DATA; | |
| 1693 } | |
| 1694 outdata(vtblsym); | |
| 1695 if (isExport()) | |
| 1696 obj_export(vtblsym,0); | |
| 1697 } | |
| 1698 | |
| 1699 void toDebug() | |
| 1700 { | |
| 1701 assert(false); | |
| 1702 } | |
| 1703 | |
| 1704 /****************************************** | |
| 1705 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 1706 * Returns ~0 if not this csym. | |
| 1707 */ | |
| 1708 uint baseVtblOffset(BaseClass bc) | |
| 1709 { | |
| 1710 uint csymoffset; | |
| 1711 int i; | |
| 1712 | |
| 1713 //printf("ClassDeclaration.baseVtblOffset('%s', bc = %p)\n", toChars(), bc); | |
| 1714 csymoffset = CLASSINFO_SIZE; | |
| 1715 csymoffset += vtblInterfaces.dim * (4 * PTRSIZE); | |
| 1716 | |
| 1717 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1718 { | |
| 1719 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1720 | |
| 1721 if (b == bc) | |
| 1722 return csymoffset; | |
| 1723 csymoffset += b.base.vtbl.dim * PTRSIZE; | |
| 1724 } | |
| 1725 | |
| 1726 static if (true) { | |
| 1727 // Put out the overriding interface vtbl[]s. | |
| 1728 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1729 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1730 ClassDeclaration cd; | |
| 1731 Array bvtbl; | |
| 1732 | |
| 1733 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1734 { | |
| 1735 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1736 { | |
| 1737 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1738 | |
| 1739 if (bs.fillVtbl(this, null, 0)) | |
| 1740 { | |
| 1741 if (bc == bs) | |
| 1742 { | |
| 1743 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1744 return csymoffset; | |
| 1745 } | |
| 1746 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1747 } | |
| 1748 } | |
| 1749 } | |
| 1750 } | |
| 1751 version (INTERFACE_VIRTUAL) { | |
| 1752 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1753 { | |
| 1754 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1755 ClassDeclaration cd; | |
| 1756 | |
| 1757 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1758 { | |
| 1759 //printf("\tbase class %s\n", cd.toChars()); | |
| 1760 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1761 { | |
| 1762 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1763 | |
| 1764 if (bc == bs) | |
| 1765 { | |
| 1766 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1767 return csymoffset; | |
| 1768 } | |
| 1769 if (b.base == bs.base) | |
| 1770 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1771 } | |
| 1772 } | |
| 1773 } | |
| 1774 } | |
| 1775 | |
| 1776 return ~0; | |
| 1777 } | |
| 1778 | |
| 1779 static private __gshared Classsym* scc; | |
| 1780 | |
| 1781 /************************************* | |
| 1782 * Create the "ClassInfo" symbol | |
| 1783 */ | |
| 1784 override Symbol* toSymbol() | |
| 1785 { | |
| 1786 if (!csym) | |
| 1787 { | |
| 1788 Symbol* s; | |
| 1789 | |
| 1790 if (!scc) | |
| 1791 scc = fake_classsym(Id.ClassInfo); | |
| 1792 | |
| 1793 s = toSymbolX("__Class", SC.SCextern, scc.Stype, "Z"); | |
| 1794 s.Sfl = FL.FLextern; | |
| 1795 s.Sflags |= SFL.SFLnodebug; | |
| 1796 csym = s; | |
| 1797 slist_add(s); | |
| 1798 } | |
| 1799 | |
| 1800 return csym; | |
| 1801 } | |
| 1802 | |
| 1803 /************************************* | |
| 1804 * This is accessible via the ClassData, but since it is frequently | |
| 1805 * needed directly (like for rtti comparisons), make it directly accessible. | |
| 1806 */ | |
| 1807 Symbol* toVtblSymbol() | |
| 1808 { | |
| 1809 if (!vtblsym) | |
| 1810 { | |
| 1811 if (!csym) | |
| 1812 toSymbol(); | |
| 1813 | |
| 1814 TYPE* t = type_alloc(TYM.TYnptr | mTY.mTYconst); | |
| 1815 t.Tnext = tsvoid; | |
| 1816 t.Tnext.Tcount++; | |
| 1817 t.Tmangle = mTYman.mTYman_d; | |
| 1818 | |
| 1819 Symbol* s = toSymbolX("__vtbl", SC.SCextern, t, "Z"); | |
| 1820 s.Sflags |= SFL.SFLnodebug; | |
| 1821 s.Sfl = FL.FLextern; | |
| 1822 vtblsym = s; | |
| 1823 slist_add(s); | |
| 1824 } | |
| 1825 return vtblsym; | |
| 1826 } | |
| 1827 | |
| 1828 // Generate the data for the static initializer. | |
| 1829 void toDt(dt_t **pdt) | |
| 1830 { | |
| 1831 //printf("ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1832 | |
| 1833 // Put in first two members, the vtbl[] and the monitor | |
| 1834 dtxoff(pdt, toVtblSymbol(), 0, TYnptr); | |
| 1835 dtdword(pdt, 0); // monitor | |
| 1836 | |
| 1837 // Put in the rest | |
| 1838 toDt2(pdt, this); | |
| 1839 | |
| 1840 //printf("-ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1841 } | |
| 1842 | |
| 1843 void toDt2(dt_t** pdt, ClassDeclaration cd) | |
| 1844 { | |
| 1845 uint offset; | |
| 1846 uint i; | |
| 1847 dt_t* dt; | |
| 1848 uint csymoffset; | |
| 1849 | |
| 1850 version (LOG) { | |
| 1851 printf("ClassDeclaration.toDt2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 1852 } | |
| 1853 if (baseClass) | |
| 1854 { | |
| 1855 baseClass.toDt2(pdt, cd); | |
| 1856 offset = baseClass.structsize; | |
| 1857 } | |
| 1858 else | |
| 1859 { | |
| 1860 offset = 8; | |
| 1861 } | |
| 1862 | |
| 1863 // Note equivalence of this loop to struct's | |
| 1864 for (i = 0; i < fields.dim; i++) | |
| 1865 { | |
| 1866 VarDeclaration v = cast(VarDeclaration)fields.data[i]; | |
| 1867 Initializer init; | |
| 1868 | |
| 1869 //printf("\t\tv = '%s' v.offset = %2d, offset = %2d\n", v.toChars(), v.offset, offset); | |
| 1870 dt = null; | |
| 1871 init = v.init; | |
| 1872 if (init) | |
| 1873 { | |
| 1874 //printf("\t\t%s has initializer %s\n", v.toChars(), init.toChars()); | |
| 1875 ExpInitializer ei = init.isExpInitializer(); | |
| 1876 Type tb = v.type.toBasetype(); | |
| 1877 if (ei && tb.ty == Tsarray) | |
| 1878 (cast(TypeSArray)tb).toDtElem(&dt, ei.exp); | |
| 1879 else | |
| 1880 dt = init.toDt(); | |
| 1881 } | |
| 1882 else if (v.offset >= offset) | |
| 1883 { //printf("\t\tdefault initializer\n"); | |
| 1884 v.type.toDt(&dt); | |
| 1885 } | |
| 1886 if (dt) | |
| 1887 { | |
| 1888 if (v.offset < offset) | |
| 1889 error("duplicated union initialization for %s", v.toChars()); | |
| 1890 else | |
| 1891 { | |
| 1892 if (offset < v.offset) | |
| 1893 dtnzeros(pdt, v.offset - offset); | |
| 1894 dtcat(pdt, dt); | |
| 1895 offset = v.offset + cast(uint)v.type.size(); | |
| 1896 } | |
| 1897 } | |
| 1898 } | |
| 1899 | |
| 1900 // Interface vptr initializations | |
| 1901 toSymbol(); // define csym | |
| 1902 | |
| 1903 for (i = 0; i < vtblInterfaces.dim; i++) | |
| 1904 { | |
| 1905 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1906 | |
| 1907 /// version (1 || INTERFACE_VIRTUAL) { | |
| 1908 for (ClassDeclaration cd2 = cd; 1; cd2 = cd2.baseClass) | |
| 1909 { | |
| 1910 assert(cd2); | |
| 1911 csymoffset = cd2.baseVtblOffset(b); | |
| 1912 if (csymoffset != ~0) | |
| 1913 { | |
| 1914 if (offset < b.offset) | |
| 1915 dtnzeros(pdt, b.offset - offset); | |
| 1916 dtxoff(pdt, cd2.toSymbol(), csymoffset, TYnptr); | |
| 1917 break; | |
| 1918 } | |
| 1919 } | |
| 1920 /// } else { | |
| 1921 /// csymoffset = baseVtblOffset(b); | |
| 1922 /// assert(csymoffset != ~0); | |
| 1923 /// dtxoff(pdt, csym, csymoffset, TYnptr); | |
| 1924 /// } | |
| 1925 offset = b.offset + 4; | |
| 1926 } | |
| 1927 | |
| 1928 if (offset < structsize) | |
| 1929 dtnzeros(pdt, structsize - offset); | |
| 1930 } | |
| 1931 | |
| 1932 Symbol* vtblsym; | |
| 1933 | |
| 1934 ///ClassDeclaration isClassDeclaration() { return cast(ClassDeclaration)this; } /// huh? | |
| 1935 override ClassDeclaration isClassDeclaration() { return this; } | |
| 1936 } |