Mercurial > projects > ddmd
annotate dmd/ClassDeclaration.d @ 130:60bb0fe4563e
dmdfe 2.037 first main iteration
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Thu, 09 Sep 2010 22:51:44 +0100 |
| parents | 1765f3ef917d |
| children | af1bebfd96a4 |
| rev | line source |
|---|---|
| 73 | 1 module dmd.ClassDeclaration; |
| 2 | |
| 114 | 3 import dmd.common; |
| 73 | 4 import dmd.AggregateDeclaration; |
| 5 import dmd.InterfaceDeclaration; | |
| 6 import dmd.ThisDeclaration; | |
| 7 import dmd.CompoundStatement; | |
| 8 import dmd.DeleteDeclaration; | |
| 9 import dmd.NewDeclaration; | |
| 10 import dmd.CtorDeclaration; | |
| 11 import dmd.TypeIdentifier; | |
| 12 import dmd.STC; | |
|
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13 import dmd.Parameter; |
| 73 | 14 import dmd.TypeTuple; |
| 15 import dmd.TY; | |
| 16 import dmd.LINK; | |
| 17 import dmd.DsymbolTable; | |
| 18 import dmd.FuncDeclaration; | |
| 19 import dmd.Array; | |
| 20 import dmd.TypeClass; | |
| 21 import dmd.Module; | |
| 22 import dmd.Id; | |
| 23 import dmd.Type; | |
| 24 import dmd.OverloadSet; | |
| 25 import dmd.ArrayTypes; | |
| 26 import dmd.BaseClass; | |
| 27 import dmd.ClassInfoDeclaration; | |
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28 import dmd.TypeInfoClassDeclaration; |
| 73 | 29 import dmd.Loc; |
| 30 import dmd.Identifier; | |
| 31 import dmd.Dsymbol; | |
| 32 import dmd.Scope; | |
| 33 import dmd.TypeFunction; | |
| 34 import dmd.OutBuffer; | |
| 35 import dmd.HdrGenState; | |
| 36 import dmd.VarDeclaration; | |
| 37 import dmd.Initializer; | |
| 38 import dmd.ExpInitializer; | |
| 39 import dmd.TypeSArray; | |
| 40 import dmd.ScopeDsymbol; | |
| 41 import dmd.PROT; | |
| 42 import dmd.Util; | |
| 43 import dmd.Global; | |
| 44 | |
| 45 import dmd.expression.Util; | |
| 46 | |
| 47 import dmd.backend.Symbol; | |
| 48 import dmd.backend.dt_t; | |
| 49 import dmd.backend.TYPE; | |
| 50 import dmd.backend.FL; | |
| 51 import dmd.backend.SFL; | |
| 52 import dmd.backend.mTY; | |
| 53 import dmd.backend.SC; | |
| 54 import dmd.backend.mTYman; | |
| 55 import dmd.backend.Util; | |
| 56 import dmd.backend.TYM; | |
| 57 import dmd.backend.Classsym; | |
| 58 import dmd.backend.glue; | |
| 59 import dmd.backend.RTLSYM; | |
| 60 import dmd.backend.LIST; | |
| 61 | |
| 62 import dmd.codegen.Util; | |
| 63 | |
| 64 import std.string; | |
| 65 | |
| 66 version (DMDV2) { | |
|
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67 enum CLASSINFO_SIZE = (0x3C+12+4); // value of ClassInfo.size |
| 73 | 68 } else { |
| 69 enum CLASSINFO_SIZE = (0x3C+12+4); // value of ClassInfo.size | |
| 70 } | |
| 71 | |
| 72 enum OFFSET_RUNTIME = 0x76543210; | |
| 73 | |
| 74 struct Param | |
| 75 { | |
| 76 int isf(void*, FuncDeclaration fd2) | |
| 77 { | |
| 78 //printf("param = %p, fd = %p %s\n", param, fd, fd.toChars()); | |
| 79 return fd is fd2; | |
| 80 } | |
| 81 | |
| 82 FuncDeclaration fd; | |
| 83 } | |
| 84 | |
| 85 class ClassDeclaration : AggregateDeclaration | |
| 86 { | |
| 87 static __gshared ClassDeclaration object; | |
| 88 static __gshared ClassDeclaration classinfo; | |
| 89 | |
| 90 ClassDeclaration baseClass; // null only if this is Object | |
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91 version(DMDV1) { |
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92 CtorDeclaration *ctor; |
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93 CtorDeclaration *defaultCtor; // default constructor |
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94 } |
| 73 | 95 FuncDeclaration staticCtor; |
| 96 FuncDeclaration staticDtor; | |
| 97 Array vtbl; // Array of FuncDeclaration's making up the vtbl[] | |
| 98 Array vtblFinal; // More FuncDeclaration's that aren't in vtbl[] | |
| 99 | |
| 100 BaseClasses baseclasses; // Array of BaseClass's; first is super, | |
| 101 // rest are Interface's | |
| 102 | |
| 103 int interfaces_dim; | |
| 104 BaseClass* interfaces; // interfaces[interfaces_dim] for this class | |
| 105 // (does not include baseClass) | |
| 106 | |
| 107 BaseClasses vtblInterfaces; // array of base interfaces that have | |
| 108 // their own vtbl[] | |
| 109 | |
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110 TypeInfoClassDeclaration vclassinfo; // the ClassInfo object for this ClassDeclaration |
| 73 | 111 bool com; // true if this is a COM class (meaning |
| 112 // it derives from IUnknown) | |
| 113 bool isauto; // true if this is an auto class | |
| 114 bool isabstract; // true if abstract class | |
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115 version(DMDV1) { |
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116 int isnested; // !=0 if is nested |
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117 } |
| 73 | 118 int inuse; // to prevent recursive attempts |
| 119 | |
| 120 this(Loc loc, Identifier id, BaseClasses baseclasses) | |
| 121 { | |
| 122 super(loc, id); | |
| 123 | |
| 124 vtbl = new Array(); | |
| 125 vtblFinal = new Array(); | |
| 126 | |
| 127 enum msg = "only object.d can define this reserved class name"; | |
| 128 | |
| 129 if (baseclasses) { | |
| 130 this.baseclasses = baseclasses; | |
| 131 } else { | |
| 132 this.baseclasses = new BaseClasses(); | |
| 133 } | |
| 134 | |
| 135 //printf("ClassDeclaration(%s), dim = %d\n", id.toChars(), this.baseclasses.dim); | |
| 136 | |
| 137 // For forward references | |
| 138 type = new TypeClass(this); | |
| 139 | |
| 140 if (id) | |
| 141 { | |
| 142 // Look for special class names | |
| 143 | |
| 144 if (id is Id.__sizeof || id is Id.alignof_ || id is Id.mangleof_) | |
| 145 error("illegal class name"); | |
| 146 | |
| 147 // BUG: What if this is the wrong TypeInfo, i.e. it is nested? | |
| 148 if (id.toChars()[0] == 'T') | |
| 149 { | |
| 150 if (id is Id.TypeInfo) | |
| 151 { | |
| 152 if (Type.typeinfo) | |
| 153 Type.typeinfo.error("%s", msg); | |
| 154 Type.typeinfo = this; | |
| 155 } | |
| 156 | |
| 157 if (id is Id.TypeInfo_Class) | |
| 158 { | |
| 159 if (Type.typeinfoclass) | |
| 160 Type.typeinfoclass.error("%s", msg); | |
| 161 Type.typeinfoclass = this; | |
| 162 } | |
| 163 | |
| 164 if (id is Id.TypeInfo_Interface) | |
| 165 { | |
| 166 if (Type.typeinfointerface) | |
| 167 Type.typeinfointerface.error("%s", msg); | |
| 168 Type.typeinfointerface = this; | |
| 169 } | |
| 170 | |
| 171 if (id is Id.TypeInfo_Struct) | |
| 172 { | |
| 173 if (Type.typeinfostruct) | |
| 174 Type.typeinfostruct.error("%s", msg); | |
| 175 Type.typeinfostruct = this; | |
| 176 } | |
| 177 | |
| 178 if (id is Id.TypeInfo_Typedef) | |
| 179 { | |
| 180 if (Type.typeinfotypedef) | |
| 181 Type.typeinfotypedef.error("%s", msg); | |
| 182 Type.typeinfotypedef = this; | |
| 183 } | |
| 184 | |
| 185 if (id is Id.TypeInfo_Pointer) | |
| 186 { | |
| 187 if (Type.typeinfopointer) | |
| 188 Type.typeinfopointer.error("%s", msg); | |
| 189 Type.typeinfopointer = this; | |
| 190 } | |
| 191 | |
| 192 if (id is Id.TypeInfo_Array) | |
| 193 { | |
| 194 if (Type.typeinfoarray) | |
| 195 Type.typeinfoarray.error("%s", msg); | |
| 196 Type.typeinfoarray = this; | |
| 197 } | |
| 198 | |
| 199 if (id is Id.TypeInfo_StaticArray) | |
| 200 { //if (Type.typeinfostaticarray) | |
| 201 //Type.typeinfostaticarray.error("%s", msg); | |
| 202 Type.typeinfostaticarray = this; | |
| 203 } | |
| 204 | |
| 205 if (id is Id.TypeInfo_AssociativeArray) | |
| 206 { | |
| 207 if (Type.typeinfoassociativearray) | |
| 208 Type.typeinfoassociativearray.error("%s", msg); | |
| 209 Type.typeinfoassociativearray = this; | |
| 210 } | |
| 211 | |
| 212 if (id is Id.TypeInfo_Enum) | |
| 213 { | |
| 214 if (Type.typeinfoenum) | |
| 215 Type.typeinfoenum.error("%s", msg); | |
| 216 Type.typeinfoenum = this; | |
| 217 } | |
| 218 | |
| 219 if (id is Id.TypeInfo_Function) | |
| 220 { | |
| 221 if (Type.typeinfofunction) | |
| 222 Type.typeinfofunction.error("%s", msg); | |
| 223 Type.typeinfofunction = this; | |
| 224 } | |
| 225 | |
| 226 if (id is Id.TypeInfo_Delegate) | |
| 227 { | |
| 228 if (Type.typeinfodelegate) | |
| 229 Type.typeinfodelegate.error("%s", msg); | |
| 230 Type.typeinfodelegate = this; | |
| 231 } | |
| 232 | |
| 233 if (id is Id.TypeInfo_Tuple) | |
| 234 { | |
| 235 if (Type.typeinfotypelist) | |
| 236 Type.typeinfotypelist.error("%s", msg); | |
| 237 Type.typeinfotypelist = this; | |
| 238 } | |
| 239 | |
| 240 version (DMDV2) { | |
| 241 if (id is Id.TypeInfo_Const) | |
| 242 { | |
| 243 if (Type.typeinfoconst) | |
| 244 Type.typeinfoconst.error("%s", msg); | |
| 245 Type.typeinfoconst = this; | |
| 246 } | |
| 247 | |
| 248 if (id is Id.TypeInfo_Invariant) | |
| 249 { | |
| 250 if (Type.typeinfoinvariant) | |
| 251 Type.typeinfoinvariant.error("%s", msg); | |
| 252 Type.typeinfoinvariant = this; | |
| 253 } | |
| 254 | |
| 255 if (id is Id.TypeInfo_Shared) | |
| 256 { | |
| 257 if (Type.typeinfoshared) | |
| 258 Type.typeinfoshared.error("%s", msg); | |
| 259 Type.typeinfoshared = this; | |
| 260 } | |
| 261 } | |
| 262 } | |
| 263 | |
| 264 if (id is Id.Object_) | |
| 265 { | |
| 266 if (object) | |
| 267 object.error("%s", msg); | |
| 268 object = this; | |
| 269 } | |
| 270 | |
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271 // if (id is Id.ClassInfo) |
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272 if (id is Id.TypeInfo_Class) |
| 73 | 273 { |
| 274 if (classinfo) | |
| 275 classinfo.error("%s", msg); | |
| 276 classinfo = this; | |
| 277 } | |
| 278 | |
| 279 if (id is Id.ModuleInfo) | |
| 280 { | |
| 281 if (Module.moduleinfo) | |
| 282 Module.moduleinfo.error("%s", msg); | |
| 283 Module.moduleinfo = this; | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 com = 0; | |
| 288 isauto = false; | |
| 289 isabstract = false; | |
| 290 inuse = 0; | |
| 291 } | |
| 292 | |
| 293 override Dsymbol syntaxCopy(Dsymbol s) | |
| 294 { | |
| 295 ClassDeclaration cd; | |
| 296 | |
| 297 //printf("ClassDeclaration.syntaxCopy('%s')\n", toChars()); | |
| 298 if (s) | |
| 299 cd = cast(ClassDeclaration)s; | |
| 300 else | |
| 301 cd = new ClassDeclaration(loc, ident, null); | |
| 302 | |
| 303 cd.storage_class |= storage_class; | |
| 304 | |
| 305 cd.baseclasses.setDim(this.baseclasses.dim); | |
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306 for (size_t i = 0; i < cd.baseclasses.dim; i++) |
| 73 | 307 { |
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308 auto b = this.baseclasses[i]; |
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309 auto b2 = new BaseClass(b.type.syntaxCopy(), b.protection); |
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310 cd.baseclasses[i] = b2; |
| 73 | 311 } |
| 312 | |
| 313 ScopeDsymbol.syntaxCopy(cd); | |
| 314 return cd; | |
| 315 } | |
| 316 | |
| 317 override void semantic(Scope sc) | |
| 318 { | |
| 319 uint offset; | |
| 320 | |
| 321 //printf("ClassDeclaration.semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 322 //printf("\tparent = %p, '%s'\n", sc.parent, sc.parent ? sc.parent.toChars() : ""); | |
| 323 //printf("sc.stc = %x\n", sc.stc); | |
| 324 | |
| 325 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 326 | |
| 327 if (!ident) // if anonymous class | |
| 328 { | |
| 329 string id = "__anonclass"; | |
| 330 ident = Identifier.generateId(id); | |
| 331 } | |
| 332 | |
| 333 if (!sc) | |
| 334 sc = scope_; | |
| 335 | |
| 336 if (!parent && sc.parent && !sc.parent.isModule()) | |
| 337 parent = sc.parent; | |
| 338 | |
| 339 type = type.semantic(loc, sc); | |
| 340 handle = type; | |
| 341 | |
| 342 if (!members) // if forward reference | |
| 343 { | |
| 344 //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 345 return; | |
| 346 } | |
| 347 if (symtab) | |
| 348 { if (!scope_) | |
| 349 { //printf("\tsemantic for '%s' is already completed\n", toChars()); | |
| 350 return; // semantic() already completed | |
| 351 } | |
| 352 } | |
| 353 else | |
| 354 symtab = new DsymbolTable(); | |
| 355 | |
| 356 Scope scx = null; | |
| 357 if (scope_) | |
| 358 { sc = scope_; | |
| 359 scx = scope_; // save so we don't make redundant copies | |
| 360 scope_ = null; | |
| 361 } | |
| 362 version (IN_GCC) { | |
| 363 methods.setDim(0); | |
| 364 } | |
| 365 | |
| 366 if (sc.stc & STC.STCdeprecated) | |
| 367 { | |
| 368 isdeprecated = 1; | |
| 369 } | |
| 370 | |
| 371 if (sc.linkage == LINK.LINKcpp) | |
| 372 error("cannot create C++ classes"); | |
| 373 | |
| 374 // Expand any tuples in baseclasses[] | |
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375 for (size_t i = 0; i < baseclasses.dim; ) |
| 73 | 376 { |
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377 auto b = baseclasses[i]; |
| 73 | 378 //printf("test1 %s %s\n", toChars(), b.type.toChars()); |
| 379 b.type = b.type.semantic(loc, sc); | |
| 380 //printf("test2\n"); | |
| 381 Type tb = b.type.toBasetype(); | |
| 382 | |
| 383 if (tb.ty == TY.Ttuple) | |
| 384 { | |
| 385 TypeTuple tup = cast(TypeTuple)tb; | |
| 386 enum PROT protection = b.protection; | |
| 387 baseclasses.remove(i); | |
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388 size_t dim = Parameter.dim(tup.arguments); |
| 73 | 389 for (size_t j = 0; j < dim; j++) |
| 390 { | |
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391 auto arg = Parameter.getNth(tup.arguments, j); |
| 73 | 392 b = new BaseClass(arg.type, protection); |
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393 baseclasses.insert(i + j, b); |
| 73 | 394 } |
| 395 } | |
| 396 else | |
| 397 i++; | |
| 398 } | |
| 399 | |
| 400 // See if there's a base class as first in baseclasses[] | |
| 401 if (baseclasses.dim) | |
| 402 { | |
| 403 TypeClass tc; | |
| 404 BaseClass b; | |
| 405 Type tb; | |
| 406 | |
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407 b = baseclasses[0]; |
| 73 | 408 //b.type = b.type.semantic(loc, sc); |
| 409 tb = b.type.toBasetype(); | |
| 410 if (tb.ty != TY.Tclass) | |
| 411 { error("base type must be class or interface, not %s", b.type.toChars()); | |
| 412 baseclasses.remove(0); | |
| 413 } | |
| 414 else | |
| 415 { | |
| 416 tc = cast(TypeClass)(tb); | |
| 417 | |
| 418 if (tc.sym.isDeprecated()) | |
| 419 { | |
| 420 if (!isDeprecated()) | |
| 421 { | |
| 422 // Deriving from deprecated class makes this one deprecated too | |
| 423 isdeprecated = 1; | |
| 424 | |
| 425 tc.checkDeprecated(loc, sc); | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 if (tc.sym.isInterfaceDeclaration()) { | |
| 430 ; | |
| 431 } else { | |
| 432 for (ClassDeclaration cdb = tc.sym; cdb; cdb = cdb.baseClass) | |
| 433 { | |
| 434 if (cdb == this) | |
| 435 { | |
| 436 error("circular inheritance"); | |
| 437 baseclasses.remove(0); | |
| 438 goto L7; | |
| 439 } | |
| 440 } | |
| 441 if (!tc.sym.symtab || tc.sym.sizeok == 0) | |
| 442 { // Try to resolve forward reference | |
| 443 if (sc.mustsemantic && tc.sym.scope_) | |
| 444 tc.sym.semantic(null); | |
| 445 } | |
| 446 if (!tc.sym.symtab || tc.sym.scope_ || tc.sym.sizeok == 0) | |
| 447 { | |
| 448 //printf("%s: forward reference of base class %s\n", toChars(), tc.sym.toChars()); | |
| 449 //error("forward reference of base class %s", baseClass.toChars()); | |
| 450 // Forward reference of base class, try again later | |
| 451 //printf("\ttry later, forward reference of base class %s\n", tc.sym.toChars()); | |
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Fixed a bug with a Scope.this(Scope enclosing) being called instead of Scope.clone() method (as a copy ctor replacement)
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452 scope_ = scx ? scx : sc.clone(); |
| 73 | 453 scope_.setNoFree(); |
| 454 if (tc.sym.scope_) | |
| 455 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 456 scope_.module_.addDeferredSemantic(this); | |
| 457 return; | |
| 458 } | |
| 459 else | |
| 460 { baseClass = tc.sym; | |
| 461 b.base = baseClass; | |
| 462 } | |
| 463 L7: ; | |
| 464 } | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 // Treat the remaining entries in baseclasses as interfaces | |
| 469 // Check for errors, handle forward references | |
| 89 | 470 for (int i = (baseClass ? 1 : 0); i < baseclasses.dim; ) |
| 73 | 471 { TypeClass tc; |
| 472 BaseClass b; | |
| 473 Type tb; | |
| 474 | |
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475 b = baseclasses[i]; |
| 73 | 476 b.type = b.type.semantic(loc, sc); |
| 477 tb = b.type.toBasetype(); | |
| 478 if (tb.ty == TY.Tclass) | |
| 479 tc = cast(TypeClass)tb; | |
| 480 else | |
| 481 tc = null; | |
| 482 if (!tc || !tc.sym.isInterfaceDeclaration()) | |
| 483 { | |
| 484 error("base type must be interface, not %s", b.type.toChars()); | |
| 485 baseclasses.remove(i); | |
| 486 continue; | |
| 487 } | |
| 488 else | |
| 489 { | |
| 490 if (tc.sym.isDeprecated()) | |
| 491 { | |
| 492 if (!isDeprecated()) | |
| 493 { | |
| 494 // Deriving from deprecated class makes this one deprecated too | |
| 495 isdeprecated = 1; | |
| 496 | |
| 497 tc.checkDeprecated(loc, sc); | |
| 498 } | |
| 499 } | |
| 500 | |
| 501 // Check for duplicate interfaces | |
| 502 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 503 { | |
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504 auto b2 = baseclasses[j]; |
| 73 | 505 if (b2.base == tc.sym) |
| 506 error("inherits from duplicate interface %s", b2.base.toChars()); | |
| 507 } | |
| 508 | |
| 509 if (!tc.sym.symtab) | |
| 510 { // Try to resolve forward reference | |
| 511 if (sc.mustsemantic && tc.sym.scope_) | |
| 512 tc.sym.semantic(null); | |
| 513 } | |
| 514 | |
| 515 b.base = tc.sym; | |
| 516 if (!b.base.symtab || b.base.scope_) | |
| 517 { | |
| 518 //error("forward reference of base class %s", baseClass.toChars()); | |
| 519 // Forward reference of base, try again later | |
| 520 //printf("\ttry later, forward reference of base %s\n", baseClass.toChars()); | |
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521 scope_ = scx ? scx : sc.clone(); |
| 73 | 522 scope_.setNoFree(); |
| 523 if (tc.sym.scope_) | |
| 524 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 525 scope_.module_.addDeferredSemantic(this); | |
| 526 return; | |
| 527 } | |
| 528 } | |
| 529 i++; | |
| 530 } | |
| 531 | |
| 532 | |
| 533 // If no base class, and this is not an Object, use Object as base class | |
| 534 if (!baseClass && ident !is Id.Object_) | |
| 535 { | |
| 536 // BUG: what if Object is redefined in an inner scope? | |
| 537 Type tbase = new TypeIdentifier(Loc(0), Id.Object_); | |
| 538 BaseClass b; | |
| 539 TypeClass tc; | |
| 540 Type bt; | |
| 541 | |
| 542 if (!object) | |
| 543 { | |
| 544 error("missing or corrupt object.d"); | |
| 545 fatal(); | |
| 546 } | |
| 547 bt = tbase.semantic(loc, sc).toBasetype(); | |
| 548 b = new BaseClass(bt, PROT.PROTpublic); | |
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549 baseclasses.shift(b); |
| 73 | 550 assert(b.type.ty == TY.Tclass); |
| 551 tc = cast(TypeClass)(b.type); | |
| 552 baseClass = tc.sym; | |
| 553 assert(!baseClass.isInterfaceDeclaration()); | |
| 554 b.base = baseClass; | |
| 555 } | |
| 556 | |
| 557 interfaces_dim = baseclasses.dim; | |
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558 interfaces = baseclasses.ptr; |
| 73 | 559 |
| 560 if (baseClass) | |
| 561 { | |
| 562 if (baseClass.storage_class & STC.STCfinal) | |
| 563 error("cannot inherit from final class %s", baseClass.toChars()); | |
| 564 | |
| 565 interfaces_dim--; | |
| 566 interfaces++; | |
| 567 | |
| 568 // Copy vtbl[] from base class | |
| 569 vtbl.setDim(baseClass.vtbl.dim); | |
| 570 memcpy(vtbl.data, baseClass.vtbl.data, (void*).sizeof * vtbl.dim); | |
| 571 | |
| 572 // Inherit properties from base class | |
| 573 com = baseClass.isCOMclass(); | |
| 574 isauto = baseClass.isauto; | |
| 575 vthis = baseClass.vthis; | |
| 576 storage_class |= baseClass.storage_class & STC.STC_TYPECTOR; | |
| 577 } | |
| 578 else | |
| 579 { | |
| 580 // No base class, so this is the root of the class hierarchy | |
| 581 vtbl.setDim(0); | |
| 582 vtbl.push(cast(void*)this); // leave room for classinfo as first member | |
| 583 } | |
| 584 | |
| 585 protection = sc.protection; | |
| 586 storage_class |= sc.stc; | |
| 587 | |
| 588 if (sizeok == 0) | |
| 589 { | |
| 590 interfaceSemantic(sc); | |
| 591 | |
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592 foreach (s; members) |
| 73 | 593 s.addMember(sc, this, true); |
| 594 | |
| 595 /* If this is a nested class, add the hidden 'this' | |
| 596 * member which is a pointer to the enclosing scope. | |
| 597 */ | |
| 598 if (vthis) // if inheriting from nested class | |
| 599 { // Use the base class's 'this' member | |
| 600 isnested = true; | |
| 601 if (storage_class & STC.STCstatic) | |
| 602 error("static class cannot inherit from nested class %s", baseClass.toChars()); | |
| 603 if (toParent2() != baseClass.toParent2()) | |
| 604 { | |
| 605 if (toParent2()) | |
| 606 { | |
| 607 error("is nested within %s, but super class %s is nested within %s", | |
| 608 toParent2().toChars(), | |
| 609 baseClass.toChars(), | |
| 610 baseClass.toParent2().toChars()); | |
| 611 } | |
| 612 else | |
| 613 { | |
| 614 error("is not nested, but super class %s is nested within %s", | |
| 615 baseClass.toChars(), | |
| 616 baseClass.toParent2().toChars()); | |
| 617 } | |
| 618 isnested = false; | |
| 619 } | |
| 620 } | |
| 621 else if (!(storage_class & STC.STCstatic)) | |
| 622 { | |
| 623 Dsymbol s = toParent2(); | |
| 624 if (s) | |
| 625 { | |
| 626 AggregateDeclaration ad = s.isClassDeclaration(); | |
| 627 FuncDeclaration fd = s.isFuncDeclaration(); | |
| 628 | |
| 629 if (ad || fd) | |
| 630 { isnested = true; | |
| 631 Type t; | |
| 632 if (ad) | |
| 633 t = ad.handle; | |
| 634 else if (fd) | |
| 635 { | |
| 636 AggregateDeclaration ad2 = fd.isMember2(); | |
| 637 if (ad2) | |
| 638 t = ad2.handle; | |
| 639 else | |
| 640 { | |
| 641 t = Type.tvoidptr; | |
| 642 } | |
| 643 } | |
| 644 else | |
| 645 assert(0); | |
| 646 if (t.ty == TY.Tstruct) // ref to struct | |
| 647 t = Type.tvoidptr; | |
| 648 assert(!vthis); | |
| 649 vthis = new ThisDeclaration(loc, t); | |
|
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650 members.push(vthis); |
| 73 | 651 } |
| 652 } | |
| 653 } | |
| 654 } | |
| 655 | |
| 656 if (storage_class & (STC.STCauto | STC.STCscope)) | |
| 657 isauto = true; | |
| 658 if (storage_class & STC.STCabstract) | |
| 659 isabstract = true; | |
| 660 if (storage_class & STC.STCimmutable) | |
| 661 type = type.invariantOf(); | |
| 662 else if (storage_class & STC.STCconst) | |
| 663 type = type.constOf(); | |
| 664 else if (storage_class & STC.STCshared) | |
| 665 type = type.sharedOf(); | |
| 666 | |
| 667 sc = sc.push(this); | |
| 668 sc.stc &= ~(STC.STCfinal | STC.STCauto | STC.STCscope | STC.STCstatic | | |
| 669 STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCtls | STC.STCgshared); | |
| 670 sc.stc |= storage_class & STC.STC_TYPECTOR; | |
| 671 sc.parent = this; | |
| 672 sc.inunion = 0; | |
| 673 | |
| 674 if (isCOMclass()) | |
| 675 { | |
| 114 | 676 version (Windows) { |
| 73 | 677 sc.linkage = LINK.LINKwindows; |
| 678 } else { | |
| 679 /* This enables us to use COM objects under Linux and | |
| 680 * work with things like XPCOM | |
| 681 */ | |
| 682 sc.linkage = LINK.LINKc; | |
| 683 } | |
| 684 } | |
| 685 sc.protection = PROT.PROTpublic; | |
| 686 sc.explicitProtection = 0; | |
| 687 sc.structalign = 8; | |
| 688 structalign = sc.structalign; | |
| 689 if (baseClass) | |
| 690 { sc.offset = baseClass.structsize; | |
| 691 alignsize = baseClass.alignsize; | |
| 692 // if (isnested) | |
| 693 // sc.offset += PTRSIZE; // room for uplevel context pointer | |
| 694 } | |
| 695 else | |
| 696 { sc.offset = PTRSIZE * 2; // allow room for __vptr and __monitor | |
| 697 alignsize = PTRSIZE; | |
| 698 } | |
| 699 structsize = sc.offset; | |
| 92 | 700 Scope scsave = sc.clone(); |
| 73 | 701 sizeok = 0; |
| 89 | 702 foreach (Dsymbol s; members) { |
| 73 | 703 s.semantic(sc); |
| 89 | 704 } |
| 73 | 705 |
| 706 if (sizeok == 2) | |
| 707 { // semantic() failed because of forward references. | |
| 708 // Unwind what we did, and defer it for later | |
| 709 fields.setDim(0); | |
| 710 structsize = 0; | |
| 711 alignsize = 0; | |
| 712 structalign = 0; | |
| 713 | |
| 714 sc = sc.pop(); | |
| 715 | |
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716 scope_ = scx ? scx : sc.clone(); |
| 73 | 717 scope_.setNoFree(); |
| 718 scope_.module_.addDeferredSemantic(this); | |
| 719 | |
| 720 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); | |
| 721 return; | |
| 722 } | |
| 723 | |
| 724 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 725 | |
| 726 structsize = sc.offset; | |
| 727 //members.print(); | |
| 728 | |
| 729 /* Look for special member functions. | |
| 730 * They must be in this class, not in a base class. | |
| 731 */ | |
| 732 ctor = cast(CtorDeclaration)search(Loc(0), Id.ctor, 0); | |
| 733 if (ctor && (ctor.toParent() != this || !ctor.isCtorDeclaration())) | |
| 734 ctor = null; | |
| 735 | |
| 736 // dtor = (DtorDeclaration *)search(Id.dtor, 0); | |
| 737 // if (dtor && dtor.toParent() != this) | |
| 738 // dtor = null; | |
| 739 | |
| 740 // inv = (InvariantDeclaration *)search(Id.classInvariant, 0); | |
| 741 // if (inv && inv.toParent() != this) | |
| 742 // inv = null; | |
| 743 | |
| 744 // Can be in base class | |
| 745 aggNew = cast(NewDeclaration)search(Loc(0), Id.classNew, 0); | |
| 746 aggDelete = cast(DeleteDeclaration)search(Loc(0), Id.classDelete, 0); | |
| 747 | |
| 748 // If this class has no constructor, but base class does, create | |
| 749 // a constructor: | |
| 750 // this() { } | |
| 751 if (!ctor && baseClass && baseClass.ctor) | |
| 752 { | |
| 753 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 754 CtorDeclaration ctor = new CtorDeclaration(loc, Loc(0), null, 0); | |
| 755 ctor.fbody = new CompoundStatement(Loc(0), new Statements()); | |
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756 members.push(ctor); |
| 73 | 757 ctor.addMember(sc, this, true); |
| 758 sc = scsave; // why? What about sc.nofree? /// | |
| 759 sc.offset = structsize; | |
| 760 ctor.semantic(sc); | |
| 761 this.ctor = ctor; | |
| 762 defaultCtor = ctor; | |
| 763 } | |
| 764 | |
| 765 static if (false) { | |
| 766 if (baseClass) | |
| 767 { if (!aggDelete) | |
| 768 aggDelete = baseClass.aggDelete; | |
| 769 if (!aggNew) | |
| 770 aggNew = baseClass.aggNew; | |
| 771 } | |
| 772 } | |
| 773 | |
| 774 // Allocate instance of each new interface | |
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775 foreach (b; vtblInterfaces) |
| 73 | 776 { |
| 777 uint thissize = PTRSIZE; | |
| 778 | |
| 779 alignmember(structalign, thissize, &sc.offset); | |
| 780 assert(b.offset == 0); | |
| 781 b.offset = sc.offset; | |
| 782 | |
| 783 // Take care of single inheritance offsets | |
| 784 while (b.baseInterfaces.length) | |
| 785 { | |
| 786 b = b.baseInterfaces[0]; | |
| 787 b.offset = sc.offset; | |
| 788 } | |
| 789 | |
| 790 sc.offset += thissize; | |
| 791 if (alignsize < thissize) | |
| 792 alignsize = thissize; | |
| 793 } | |
| 794 structsize = sc.offset; | |
| 795 sizeok = 1; | |
| 796 Module.dprogress++; | |
| 797 | |
| 798 dtor = buildDtor(sc); | |
| 799 | |
| 800 sc.pop(); | |
| 801 | |
| 802 static if (false) { // Do not call until toObjfile() because of forward references | |
| 803 // Fill in base class vtbl[]s | |
| 89 | 804 for (int i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 805 { |
| 806 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 807 | |
| 808 //b.fillVtbl(this, &b.vtbl, 1); | |
| 809 } | |
| 810 } | |
| 811 //printf("-ClassDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 812 } | |
| 813 | |
| 814 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 815 { | |
| 816 if (!isAnonymous()) | |
| 817 { | |
| 818 buf.printf("%s ", kind()); | |
| 819 buf.writestring(toChars()); | |
| 820 if (baseclasses.dim) | |
| 821 buf.writestring(" : "); | |
| 822 } | |
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823 foreach (size_t i, BaseClass b; baseclasses) |
| 73 | 824 { |
| 825 if (i) | |
| 826 buf.writeByte(','); | |
| 827 //buf.writestring(b.base.ident.toChars()); | |
| 828 b.type.toCBuffer(buf, null, hgs); | |
| 829 } | |
| 830 if (members) | |
| 831 { | |
| 832 buf.writenl(); | |
| 833 buf.writeByte('{'); | |
| 834 buf.writenl(); | |
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835 foreach (s; members) |
| 73 | 836 { |
| 837 buf.writestring(" "); | |
| 838 s.toCBuffer(buf, hgs); | |
| 839 } | |
| 840 buf.writestring("}"); | |
| 841 } | |
| 842 else | |
| 843 buf.writeByte(';'); | |
| 844 buf.writenl(); | |
| 845 } | |
| 846 | |
| 847 /********************************************* | |
| 848 * Determine if 'this' is a base class of cd. | |
| 849 * This is used to detect circular inheritance only. | |
| 850 */ | |
| 851 int isBaseOf2(ClassDeclaration cd) | |
| 852 { | |
| 853 if (!cd) | |
| 854 return 0; | |
| 855 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
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856 foreach (b; cd.baseclasses) |
| 73 | 857 { |
| 858 if (b.base is this || isBaseOf2(b.base)) | |
| 859 return 1; | |
| 860 } | |
| 861 return 0; | |
| 862 } | |
| 863 | |
| 864 /******************************************* | |
| 865 * Determine if 'this' is a base class of cd. | |
| 866 */ | |
| 867 /// #define OFFSET_RUNTIME 0x76543210 | |
| 868 bool isBaseOf(ClassDeclaration cd, int* poffset) | |
| 869 { | |
| 870 if (!cd) | |
| 871 return 0; | |
| 872 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
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873 foreach (b; cd.baseclasses) |
| 73 | 874 { |
| 875 if (b.base == this || isBaseOf2(b.base)) | |
| 876 return 1; | |
| 877 } | |
| 878 | |
| 879 return 0; | |
| 880 } | |
| 881 | |
| 882 override Dsymbol search(Loc, Identifier ident, int flags) | |
| 883 { | |
| 884 Dsymbol s; | |
| 885 //printf("%s.ClassDeclaration.search('%s')\n", toChars(), ident.toChars()); | |
| 886 | |
| 887 if (scope_) | |
| 888 { | |
| 889 Scope sc = scope_; | |
| 890 sc.mustsemantic++; | |
| 891 semantic(sc); | |
| 892 sc.mustsemantic--; | |
| 893 } | |
| 894 | |
| 895 if (!members || !symtab || scope_) | |
| 896 { | |
| 897 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 898 //*(char*)0=0; | |
| 899 return null; | |
| 900 } | |
| 901 | |
| 902 s = ScopeDsymbol.search(loc, ident, flags); | |
| 903 if (!s) | |
| 904 { | |
| 905 // Search bases classes in depth-first, left to right order | |
| 906 | |
| 907 int i; | |
| 908 | |
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909 foreach (b; baseclasses) |
| 73 | 910 { |
| 911 if (b.base) | |
| 912 { | |
| 913 if (!b.base.symtab) | |
| 914 error("base %s is forward referenced", b.base.ident.toChars()); | |
| 915 else | |
| 916 { | |
| 917 s = b.base.search(loc, ident, flags); | |
| 918 if (s is this) // happens if s is nested in this and derives from this | |
| 919 s = null; | |
| 920 else if (s) | |
| 921 break; | |
| 922 } | |
| 923 } | |
| 924 } | |
| 925 } | |
| 926 return s; | |
| 927 } | |
| 928 | |
| 929 version (DMDV2) { | |
| 930 bool isFuncHidden(FuncDeclaration fd) | |
| 931 { | |
| 932 //printf("ClassDeclaration::isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toChars()); | |
| 933 Dsymbol s = search(Loc(0), fd.ident, 4|2); | |
| 934 if (!s) | |
| 935 { | |
| 936 //printf("not found\n"); | |
| 937 /* Because, due to a hack, if there are multiple definitions | |
| 938 * of fd.ident, null is returned. | |
| 939 */ | |
| 940 return false; | |
| 941 } | |
| 942 | |
| 943 Param p; p.fd = fd; | |
| 944 | |
| 945 s = s.toAlias(); | |
| 946 OverloadSet os = s.isOverloadSet(); | |
| 947 if (os) | |
| 948 { | |
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949 foreach (s2; os.a) |
| 73 | 950 { |
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951 auto f2 = s2.isFuncDeclaration(); |
| 73 | 952 if (f2 && overloadApply(f2, &p.isf, &p)) |
| 953 return false; | |
| 954 } | |
| 955 return true; | |
| 956 } | |
| 957 else | |
| 958 { | |
| 959 FuncDeclaration fdstart = s.isFuncDeclaration(); | |
| 960 //printf("%s fdstart = %p\n", s.kind(), fdstart); | |
| 961 return !overloadApply(fdstart, &p.isf, &p); | |
| 962 } | |
| 963 } | |
| 964 } | |
| 965 FuncDeclaration findFunc(Identifier ident, TypeFunction tf) | |
| 966 { | |
| 967 //printf("ClassDeclaration.findFunc(%s, %s) %s\n", ident.toChars(), tf.toChars(), toChars()); | |
| 968 | |
| 969 ClassDeclaration cd = this; | |
| 970 Array vtbl = cd.vtbl; | |
| 971 while (true) | |
| 972 { | |
| 973 for (size_t i = 0; i < vtbl.dim; i++) | |
| 974 { | |
| 975 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 976 if (!fd) | |
| 977 continue; // the first entry might be a ClassInfo | |
| 978 | |
| 979 //printf("\t[%d] = %s\n", i, fd.toChars()); | |
| 980 if (ident == fd.ident && | |
| 981 //tf.equals(fd.type) | |
| 982 fd.type.covariant(tf) == 1 | |
| 983 ) | |
| 984 { //printf("\t\tfound\n"); | |
| 985 return fd; | |
| 986 } | |
| 987 //else printf("\t\t%d\n", fd.type.covariant(tf)); | |
| 988 } | |
| 989 if (!cd) | |
| 990 break; | |
| 991 | |
| 992 vtbl = cd.vtblFinal; | |
| 993 cd = cd.baseClass; | |
| 994 } | |
| 995 | |
| 996 return null; | |
| 997 } | |
| 998 | |
| 999 void interfaceSemantic(Scope sc) | |
| 1000 { | |
| 1001 InterfaceDeclaration id = isInterfaceDeclaration(); | |
| 1002 | |
| 1003 vtblInterfaces = new BaseClasses(); | |
| 1004 vtblInterfaces.reserve(interfaces_dim); | |
| 1005 | |
| 1006 for (size_t i = 0; i < interfaces_dim; i++) | |
| 1007 { | |
| 1008 BaseClass b = interfaces[i]; | |
| 1009 | |
| 1010 // If this is an interface, and it derives from a COM interface, | |
| 1011 // then this is a COM interface too. | |
| 1012 if (b.base.isCOMinterface()) | |
| 1013 com = 1; | |
| 1014 | |
| 1015 if (b.base.isCPPinterface() && id) | |
| 1016 id.cpp = 1; | |
| 1017 | |
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1018 vtblInterfaces.push(b); |
| 73 | 1019 b.copyBaseInterfaces(vtblInterfaces); |
| 1020 } | |
| 1021 } | |
| 1022 | |
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1023 version(DMDV1) |
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1024 { |
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1025 int isNested() |
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1026 { |
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1027 assert(false); |
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1028 } |
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1029 } |
| 73 | 1030 bool isCOMclass() |
| 1031 { | |
| 1032 return com; | |
| 1033 } | |
| 1034 | |
| 1035 bool isCOMinterface() | |
| 1036 { | |
| 1037 return false; | |
| 1038 } | |
| 1039 | |
| 1040 version (DMDV2) { | |
| 1041 bool isCPPinterface() | |
| 1042 { | |
| 1043 return false; | |
| 1044 } | |
| 1045 } | |
| 1046 bool isAbstract() | |
| 1047 { | |
| 1048 if (isabstract) | |
| 1049 return true; | |
| 1050 | |
| 1051 for (int i = 1; i < vtbl.dim; i++) | |
| 1052 { | |
| 1053 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1054 | |
| 1055 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1056 if (!fd || fd.isAbstract()) | |
| 1057 { | |
| 1058 isabstract = true; | |
| 1059 return true; | |
| 1060 } | |
| 1061 } | |
| 1062 | |
| 1063 return false; | |
| 1064 } | |
| 1065 | |
| 1066 int vtblOffset() | |
| 1067 { | |
| 1068 assert(false); | |
| 1069 } | |
| 1070 | |
| 1071 override string kind() | |
| 1072 { | |
| 1073 return "class"; | |
| 1074 } | |
| 1075 | |
| 1076 override string mangle() | |
| 1077 { | |
| 1078 Dsymbol parentsave = parent; | |
| 1079 | |
| 1080 //printf("ClassDeclaration.mangle() %s.%s\n", parent.toChars(), toChars()); | |
| 1081 | |
| 1082 /* These are reserved to the compiler, so keep simple | |
| 1083 * names for them. | |
| 1084 */ | |
| 1085 if (ident is Id.Exception) | |
| 1086 { | |
| 1087 if (parent.ident is Id.object) | |
| 1088 parent = null; | |
| 1089 } | |
| 1090 else if (ident is Id.TypeInfo || | |
| 1091 // ident is Id.Exception || | |
| 1092 ident is Id.TypeInfo_Struct || | |
| 1093 ident is Id.TypeInfo_Class || | |
| 1094 ident is Id.TypeInfo_Typedef || | |
| 1095 ident is Id.TypeInfo_Tuple || | |
| 1096 this is object || | |
| 1097 this is classinfo || | |
| 1098 this is Module.moduleinfo || | |
| 1099 ident.toChars().startsWith("TypeInfo_") | |
| 1100 ) | |
| 1101 { | |
| 1102 parent = null; | |
| 1103 } | |
| 1104 | |
| 1105 string id = Dsymbol.mangle(); | |
| 1106 parent = parentsave; | |
| 1107 return id; | |
| 1108 } | |
| 1109 | |
| 1110 override void toDocBuffer(OutBuffer buf) | |
| 1111 { | |
| 1112 assert(false); | |
| 1113 } | |
| 1114 | |
| 1115 override PROT getAccess(Dsymbol smember) // determine access to smember | |
| 1116 { | |
| 1117 PROT access_ret = PROT.PROTnone; | |
| 1118 | |
| 1119 version (LOG) { | |
| 1120 printf("+ClassDeclaration::getAccess(this = '%s', smember = '%s')\n", | |
| 1121 toChars(), smember.toChars()); | |
| 1122 } | |
| 1123 if (smember.toParent() is this) | |
| 1124 { | |
| 1125 access_ret = smember.prot(); | |
| 1126 } | |
| 1127 else | |
| 1128 { | |
| 1129 PROT access; | |
| 1130 | |
| 1131 if (smember.isDeclaration().isStatic()) | |
| 1132 { | |
| 1133 access_ret = smember.prot(); | |
| 1134 } | |
| 1135 | |
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1136 foreach (b; baseclasses) |
| 73 | 1137 { |
| 1138 access = b.base.getAccess(smember); | |
| 1139 switch (access) | |
| 1140 { | |
| 1141 case PROT.PROTnone: | |
| 1142 break; | |
| 1143 | |
| 1144 case PROT.PROTprivate: | |
| 1145 access = PROT.PROTnone; // private members of base class not accessible | |
| 1146 break; | |
| 1147 | |
| 1148 case PROT.PROTpackage: | |
| 1149 case PROT.PROTprotected: | |
| 1150 case PROT.PROTpublic: | |
| 1151 case PROT.PROTexport: | |
| 1152 // If access is to be tightened | |
| 1153 if (b.protection < access) | |
| 1154 access = b.protection; | |
| 1155 | |
| 1156 // Pick path with loosest access | |
| 1157 if (access > access_ret) | |
| 1158 access_ret = access; | |
| 1159 break; | |
| 1160 | |
| 1161 default: | |
| 1162 assert(0); | |
| 1163 } | |
| 1164 } | |
| 1165 } | |
| 1166 | |
| 1167 version (LOG) { | |
| 1168 printf("-ClassDeclaration::getAccess(this = '%s', smember = '%s') = %d\n", | |
| 1169 toChars(), smember.toChars(), access_ret); | |
| 1170 } | |
| 1171 | |
| 1172 return access_ret; | |
| 1173 } | |
| 1174 | |
| 1175 override void addLocalClass(ClassDeclarations aclasses) | |
| 1176 { | |
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1177 aclasses.push(this); |
| 73 | 1178 } |
| 1179 | |
| 1180 // Back end | |
| 1181 override void toObjFile(int multiobj) // compile to .obj file | |
| 1182 { | |
| 1183 uint offset; | |
| 1184 Symbol* sinit; | |
| 1185 enum_SC scclass; | |
| 1186 | |
| 1187 //printf("ClassDeclaration.toObjFile('%s')\n", toChars()); | |
| 1188 | |
| 1189 if (!members) | |
| 1190 return; | |
| 1191 | |
| 1192 if (multiobj) | |
| 1193 { | |
| 1194 obj_append(this); | |
| 1195 return; | |
| 1196 } | |
| 1197 | |
| 1198 if (global.params.symdebug) | |
| 1199 toDebug(); | |
| 1200 | |
| 1201 assert(!scope_); // semantic() should have been run to completion | |
| 1202 | |
| 1203 scclass = SCglobal; | |
| 1204 if (inTemplateInstance()) | |
| 1205 scclass = SCcomdat; | |
| 1206 | |
| 1207 // Put out the members | |
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1208 foreach (member; members) |
| 73 | 1209 member.toObjFile(0); |
| 1210 | |
| 1211 static if (false) { | |
| 1212 // Build destructor by aggregating dtors[] | |
| 1213 Symbol* sdtor; | |
| 1214 switch (dtors.dim) | |
| 1215 { | |
| 1216 case 0: | |
| 1217 // No destructors for this class | |
| 1218 sdtor = null; | |
| 1219 break; | |
| 1220 | |
| 1221 case 1: | |
| 1222 // One destructor, just use it directly | |
| 1223 sdtor = (cast(DtorDeclaration)dtors.data[0]).toSymbol(); | |
| 1224 break; | |
| 1225 | |
| 1226 default: | |
| 1227 { | |
| 1228 /* Build a destructor that calls all the | |
| 1229 * other destructors in dtors[]. | |
| 1230 */ | |
| 1231 | |
| 1232 elem* edtor = null; | |
| 1233 | |
| 1234 // Declare 'this' pointer for our new destructor | |
| 1235 Symbol* sthis = symbol_calloc("this"); | |
| 1236 sthis.Stype = type_fake(TYnptr); | |
| 1237 sthis.Stype.Tcount++; | |
| 1238 sthis.Sclass = SCfastpar; | |
| 1239 sthis.Spreg = AX; | |
| 1240 sthis.Sfl = FLauto; | |
| 1241 | |
| 1242 // Call each of the destructors in dtors[] | |
| 1243 // in reverse order | |
| 89 | 1244 for (size_t i = 0; i < dtors.dim; i++) |
| 73 | 1245 { |
| 1246 DtorDeclaration d = cast(DtorDeclaration)dtors.data[i]; | |
| 1247 Symbol* s = d.toSymbol(); | |
| 1248 elem* e = el_bin(OPcall, TYvoid, el_var(s), el_var(sthis)); | |
| 1249 edtor = el_combine(e, edtor); | |
| 1250 } | |
| 1251 | |
| 1252 // Create type for the function | |
| 1253 .type* t = type_alloc(TYjfunc); | |
| 1254 t.Tflags |= TFprototype | TFfixed; | |
| 1255 t.Tmangle = mTYman_d; | |
| 1256 t.Tnext = tsvoid; | |
| 1257 tsvoid.Tcount++; | |
| 1258 | |
| 1259 // Create the function, sdtor, and write it out | |
| 1260 localgot = null; | |
| 1261 sdtor = toSymbolX("__dtor", SCglobal, t, "FZv"); | |
| 1262 block* b = block_calloc(); | |
| 1263 b.BC = BCret; | |
| 1264 b.Belem = edtor; | |
| 1265 sdtor.Sfunc.Fstartblock = b; | |
| 1266 cstate.CSpsymtab = &sdtor.Sfunc.Flocsym; | |
| 1267 symbol_add(sthis); | |
| 1268 writefunc(sdtor); | |
| 1269 } | |
| 1270 } | |
| 1271 } | |
| 1272 | |
| 1273 // Generate C symbols | |
| 1274 toSymbol(); | |
| 1275 toVtblSymbol(); | |
| 1276 sinit = toInitializer(); | |
| 1277 | |
| 1278 ////////////////////////////////////////////// | |
| 1279 | |
| 1280 // Generate static initializer | |
| 1281 sinit.Sclass = scclass; | |
| 1282 sinit.Sfl = FLdata; | |
| 1283 version (ELFOBJ) { // Burton | |
| 1284 sinit.Sseg = Segment.CDATA; | |
| 1285 } | |
| 1286 version (MACHOBJ) { | |
| 1287 sinit.Sseg = Segment.DATA; | |
| 1288 } | |
| 1289 toDt(&sinit.Sdt); | |
| 1290 outdata(sinit); | |
| 1291 | |
| 1292 ////////////////////////////////////////////// | |
| 1293 | |
| 1294 // Put out the TypeInfo | |
| 1295 type.getTypeInfo(null); | |
|
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1296 //type.vtinfo.toObjFile(multiobj); |
| 73 | 1297 |
| 1298 ////////////////////////////////////////////// | |
| 1299 | |
| 1300 // Put out the ClassInfo | |
| 1301 csym.Sclass = scclass; | |
| 1302 csym.Sfl = FLdata; | |
| 1303 | |
| 1304 /* The layout is: | |
| 1305 { | |
| 1306 void **vptr; | |
| 1307 monitor_t monitor; | |
| 1308 byte[] initializer; // static initialization data | |
| 1309 char[] name; // class name | |
| 1310 void *[] vtbl; | |
| 1311 Interface[] interfaces; | |
| 1312 ClassInfo *base; // base class | |
| 1313 void *destructor; | |
| 1314 void *invariant; // class invariant | |
| 1315 uint flags; | |
| 1316 void *deallocator; | |
| 1317 OffsetTypeInfo[] offTi; | |
| 1318 void *defaultConstructor; | |
| 1319 const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function | |
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1320 //TypeInfo typeinfo; |
| 73 | 1321 } |
| 1322 */ | |
| 1323 dt_t* dt = null; | |
| 1324 offset = CLASSINFO_SIZE; // must be ClassInfo.size | |
| 1325 if (classinfo) | |
| 1326 { | |
| 1327 if (classinfo.structsize != CLASSINFO_SIZE) | |
| 1328 error("D compiler and phobos' object.d are mismatched"); | |
| 1329 } | |
| 1330 | |
| 1331 if (classinfo) | |
| 1332 dtxoff(&dt, classinfo.toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo | |
| 1333 else | |
| 1334 dtdword(&dt, 0); // BUG: should be an assert() | |
| 1335 | |
| 1336 dtdword(&dt, 0); // monitor | |
| 1337 | |
| 1338 // initializer[] | |
| 1339 assert(structsize >= 8); | |
| 1340 dtdword(&dt, structsize); // size | |
| 1341 dtxoff(&dt, sinit, 0, TYnptr); // initializer | |
| 1342 | |
| 1343 // name[] | |
| 1344 string name = ident.toChars(); | |
| 1345 size_t namelen = name.length; | |
| 1346 if (!(namelen > 9 && name[0..9] == "TypeInfo_")) | |
| 1347 { | |
| 1348 name = toPrettyChars(); | |
| 1349 namelen = name.length; | |
| 1350 } | |
| 1351 dtdword(&dt, namelen); | |
| 1352 dtabytes(&dt, TYnptr, 0, namelen + 1, toStringz(name)); | |
| 1353 | |
| 1354 // vtbl[] | |
| 1355 dtdword(&dt, vtbl.dim); | |
| 1356 dtxoff(&dt, vtblsym, 0, TYnptr); | |
| 1357 | |
| 1358 // interfaces[] | |
| 1359 dtdword(&dt, vtblInterfaces.dim); | |
| 1360 if (vtblInterfaces.dim) | |
| 1361 dtxoff(&dt, csym, offset, TYnptr); // (*) | |
| 1362 else | |
| 1363 dtdword(&dt, 0); | |
| 1364 | |
| 1365 // base | |
| 1366 if (baseClass) | |
| 1367 dtxoff(&dt, baseClass.toSymbol(), 0, TYnptr); | |
| 1368 else | |
| 1369 dtdword(&dt, 0); | |
| 1370 | |
| 1371 // destructor | |
| 1372 if (dtor) | |
| 1373 dtxoff(&dt, dtor.toSymbol(), 0, TYnptr); | |
| 1374 else | |
| 1375 dtdword(&dt, 0); | |
| 1376 | |
| 1377 // invariant | |
| 1378 if (inv) | |
| 1379 dtxoff(&dt, inv.toSymbol(), 0, TYnptr); | |
| 1380 else | |
| 1381 dtdword(&dt, 0); | |
| 1382 | |
| 1383 // flags | |
| 1384 int flags = 4 | isCOMclass(); | |
| 1385 version (DMDV2) { | |
| 1386 flags |= 16; | |
| 1387 } | |
| 1388 flags |= 32; | |
| 1389 | |
| 1390 if (ctor) | |
| 1391 flags |= 8; | |
| 1392 for (ClassDeclaration cd = this; cd; cd = cd.baseClass) | |
| 1393 { | |
| 1394 if (cd.members) | |
| 1395 { | |
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1396 foreach (sm; cd.members) |
| 73 | 1397 { |
| 1398 //printf("sm = %s %s\n", sm.kind(), sm.toChars()); | |
| 1399 if (sm.hasPointers()) | |
| 1400 goto L2; | |
| 1401 } | |
| 1402 } | |
| 1403 } | |
| 1404 flags |= 2; // no pointers | |
| 1405 L2: | |
| 1406 dtdword(&dt, flags); | |
| 1407 | |
| 1408 | |
| 1409 // deallocator | |
| 1410 if (aggDelete) | |
| 1411 dtxoff(&dt, aggDelete.toSymbol(), 0, TYnptr); | |
| 1412 else | |
| 1413 dtdword(&dt, 0); | |
| 1414 | |
| 1415 // offTi[] | |
| 1416 dtdword(&dt, 0); | |
| 1417 dtdword(&dt, 0); // null for now, fix later | |
| 1418 | |
| 1419 // defaultConstructor | |
| 1420 if (defaultCtor) | |
| 1421 dtxoff(&dt, defaultCtor.toSymbol(), 0, TYnptr); | |
| 1422 else | |
| 1423 dtdword(&dt, 0); | |
| 1424 | |
| 1425 version (DMDV2) { | |
| 1426 FuncDeclaration sgetmembers = findGetMembers(); | |
| 1427 if (sgetmembers) | |
| 1428 dtxoff(&dt, sgetmembers.toSymbol(), 0, TYnptr); | |
| 1429 else | |
| 1430 dtdword(&dt, 0); // module getMembers() function | |
| 1431 } | |
| 1432 | |
|
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1433 //dtxoff(&dt, type.vtinfo.toSymbol(), 0, TYnptr); // typeinfo |
| 73 | 1434 //dtdword(&dt, 0); |
| 1435 | |
| 1436 ////////////////////////////////////////////// | |
| 1437 | |
| 1438 // Put out vtblInterfaces.data[]. Must immediately follow csym, because | |
| 1439 // of the fixup (*) | |
| 1440 | |
| 1441 offset += vtblInterfaces.dim * (4 * PTRSIZE); | |
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1442 foreach (b; vtblInterfaces) |
| 73 | 1443 { |
| 1444 ClassDeclaration id = b.base; | |
| 1445 | |
| 1446 /* The layout is: | |
|
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1447 * struct Interface |
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1448 * { |
| 73 | 1449 * ClassInfo *interface; |
| 1450 * void *[] vtbl; | |
|
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1451 * ptrdiff_t offset; |
| 73 | 1452 * } |
| 1453 */ | |
| 1454 | |
| 1455 // Fill in vtbl[] | |
| 1456 b.fillVtbl(this, b.vtbl, 1); | |
| 1457 | |
| 1458 dtxoff(&dt, id.toSymbol(), 0, TYnptr); // ClassInfo | |
| 1459 | |
| 1460 // vtbl[] | |
| 1461 dtdword(&dt, id.vtbl.dim); | |
| 1462 dtxoff(&dt, csym, offset, TYnptr); | |
| 1463 | |
| 1464 dtdword(&dt, b.offset); // this offset | |
| 1465 | |
| 1466 offset += id.vtbl.dim * PTRSIZE; | |
| 1467 } | |
| 1468 | |
| 1469 // Put out the vtblInterfaces.data[].vtbl[] | |
| 1470 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1471 //printf("putting out %d interface vtbl[]s for '%s'\n", vtblInterfaces.dim, toChars()); | |
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1472 foreach (size_t i, BaseClass b; vtblInterfaces) |
| 73 | 1473 { |
| 1474 ClassDeclaration id = b.base; | |
| 1475 int j; | |
| 1476 | |
| 1477 //printf(" interface[%d] is '%s'\n", i, id.toChars()); | |
| 1478 j = 0; | |
| 1479 if (id.vtblOffset()) | |
| 1480 { | |
| 1481 // First entry is ClassInfo reference | |
| 1482 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1483 | |
| 1484 // First entry is struct Interface reference | |
| 1485 dtxoff(&dt, csym, CLASSINFO_SIZE + i * (4 * PTRSIZE), TYnptr); | |
| 1486 j = 1; | |
| 1487 } | |
| 1488 | |
| 1489 assert(id.vtbl.dim == b.vtbl.dim); | |
| 1490 for (; j < id.vtbl.dim; j++) | |
| 1491 { | |
| 1492 assert(j < b.vtbl.dim); | |
| 1493 static if (false) { | |
| 1494 Object o = cast(Object)b.vtbl.data[j]; | |
| 1495 if (o) | |
| 1496 { | |
| 1497 printf("o = %p\n", o); | |
| 1498 assert(o.dyncast() == DYNCAST_DSYMBOL); | |
| 1499 Dsymbol s = cast(Dsymbol)o; | |
| 1500 printf("s.kind() = '%s'\n", s.kind()); | |
| 1501 } | |
| 1502 } | |
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1503 auto fd = cast(FuncDeclaration)b.vtbl.data[j]; |
| 73 | 1504 if (fd) |
| 1505 dtxoff(&dt, fd.toThunkSymbol(b.offset), 0, TYnptr); | |
| 1506 else | |
| 1507 dtdword(&dt, 0); | |
| 1508 } | |
| 1509 } | |
| 1510 | |
| 1511 static if (true) { | |
| 1512 // Put out the overriding interface vtbl[]s. | |
| 1513 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1514 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1515 ClassDeclaration cd; | |
| 1516 scope Array bvtbl = new Array(); | |
| 1517 | |
| 1518 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1519 { | |
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1520 foreach (size_t k, BaseClass bs; cd.vtblInterfaces) |
| 73 | 1521 { |
| 1522 if (bs.fillVtbl(this, bvtbl, 0)) | |
| 1523 { | |
| 1524 //printf("\toverriding vtbl[] for %s\n", bs.base.toChars()); | |
| 1525 ClassDeclaration id = bs.base; | |
| 1526 int j; | |
| 1527 | |
| 1528 j = 0; | |
| 1529 if (id.vtblOffset()) | |
| 1530 { | |
| 1531 // First entry is ClassInfo reference | |
| 1532 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1533 | |
| 1534 // First entry is struct Interface reference | |
| 1535 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1536 j = 1; | |
| 1537 } | |
| 1538 | |
| 1539 for (; j < id.vtbl.dim; j++) | |
| 1540 { | |
| 1541 assert(j < bvtbl.dim); | |
| 1542 FuncDeclaration fd = cast(FuncDeclaration)bvtbl.data[j]; | |
| 1543 if (fd) | |
| 1544 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1545 else | |
| 1546 dtdword(&dt, 0); | |
| 1547 } | |
| 1548 } | |
| 1549 } | |
| 1550 } | |
| 1551 } | |
| 1552 | |
| 1553 version (INTERFACE_VIRTUAL) { | |
| 1554 // Put out the overriding interface vtbl[]s. | |
| 1555 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1556 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 89 | 1557 for (size_t i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 1558 { |
| 1559 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1560 ClassDeclaration cd; | |
| 1561 | |
| 1562 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1563 { | |
| 1564 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1565 { | |
| 1566 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1567 | |
| 1568 if (b.base == bs.base) | |
| 1569 { | |
| 1570 //printf("\toverriding vtbl[] for %s\n", b.base.toChars()); | |
| 1571 ClassDeclaration id = b.base; | |
| 1572 int j; | |
| 1573 | |
| 1574 j = 0; | |
| 1575 if (id.vtblOffset()) | |
| 1576 { | |
| 1577 // First entry is ClassInfo reference | |
| 1578 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1579 | |
| 1580 // First entry is struct Interface reference | |
| 1581 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1582 j = 1; | |
| 1583 } | |
| 1584 | |
| 1585 for (; j < id.vtbl.dim; j++) | |
| 1586 { | |
| 1587 assert(j < b.vtbl.dim); | |
| 1588 FuncDeclaration fd = cast(FuncDeclaration)b.vtbl.data[j]; | |
| 1589 if (fd) | |
| 1590 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1591 else | |
| 1592 dtdword(&dt, 0); | |
| 1593 } | |
| 1594 } | |
| 1595 } | |
| 1596 } | |
| 1597 } | |
| 1598 } | |
| 1599 | |
| 1600 | |
| 1601 csym.Sdt = dt; | |
| 1602 version (ELFOBJ_OR_MACHOBJ) { // Burton | |
| 1603 // ClassInfo cannot be const data, because we use the monitor on it | |
| 1604 csym.Sseg = Segment.DATA; | |
| 1605 } | |
| 1606 outdata(csym); | |
| 1607 if (isExport()) | |
| 1608 obj_export(csym,0); | |
| 1609 | |
| 1610 ////////////////////////////////////////////// | |
| 1611 | |
| 1612 // Put out the vtbl[] | |
| 1613 //printf("putting out %s.vtbl[]\n", toChars()); | |
| 1614 dt = null; | |
| 89 | 1615 size_t i; |
| 73 | 1616 if (0) |
| 1617 i = 0; | |
| 1618 else | |
| 1619 { | |
| 1620 dtxoff(&dt, csym, 0, TYnptr); // first entry is ClassInfo reference | |
| 1621 i = 1; | |
| 1622 } | |
| 1623 for (; i < vtbl.dim; i++) | |
| 1624 { | |
| 1625 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1626 | |
| 1627 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1628 if (fd && (fd.fbody || !isAbstract())) | |
| 1629 { | |
| 1630 Symbol* s = fd.toSymbol(); | |
| 1631 | |
| 1632 version (DMDV2) { | |
| 1633 if (isFuncHidden(fd)) | |
| 1634 { | |
| 1635 /* fd is hidden from the view of this class. | |
| 1636 * If fd overlaps with any function in the vtbl[], then | |
| 1637 * issue 'hidden' error. | |
| 1638 */ | |
| 1639 for (int j = 1; j < vtbl.dim; j++) | |
| 1640 { | |
| 1641 if (j == i) | |
| 1642 continue; | |
| 1643 FuncDeclaration fd2 = (cast(Dsymbol)vtbl.data[j]).isFuncDeclaration(); | |
| 1644 if (!fd2.ident.equals(fd.ident)) | |
| 1645 continue; | |
| 1646 if (fd.leastAsSpecialized(fd2) || fd2.leastAsSpecialized(fd)) | |
| 1647 { | |
| 1648 if (global.params.warnings) | |
| 1649 { | |
| 1650 TypeFunction tf = cast(TypeFunction)fd.type; | |
| 1651 if (tf.ty == Tfunction) | |
|
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1652 warning("%s%s is hidden by %s\n", fd.toPrettyChars(), Parameter.argsTypesToChars(tf.parameters, tf.varargs), toChars()); |
| 73 | 1653 else |
| 1654 warning("%s is hidden by %s\n", fd.toPrettyChars(), toChars()); | |
| 1655 } | |
| 1656 s = rtlsym[RTLSYM_DHIDDENFUNC]; | |
| 1657 break; | |
| 1658 } | |
| 1659 } | |
| 1660 } | |
| 1661 } | |
| 1662 dtxoff(&dt, s, 0, TYnptr); | |
| 1663 } | |
| 1664 else | |
| 1665 dtdword(&dt, 0); | |
| 1666 } | |
| 1667 | |
| 1668 vtblsym.Sdt = dt; | |
| 1669 vtblsym.Sclass = scclass; | |
| 1670 vtblsym.Sfl = FLdata; | |
| 1671 version (ELFOBJ) { | |
| 1672 vtblsym.Sseg = Segment.CDATA; | |
| 1673 } | |
| 1674 version (MACHOBJ) { | |
| 1675 vtblsym.Sseg = Segment.DATA; | |
| 1676 } | |
| 1677 outdata(vtblsym); | |
| 1678 if (isExport()) | |
| 1679 obj_export(vtblsym,0); | |
| 1680 } | |
| 1681 | |
| 1682 void toDebug() | |
| 1683 { | |
| 1684 assert(false); | |
| 1685 } | |
| 1686 | |
| 1687 /****************************************** | |
| 1688 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 1689 * Returns ~0 if not this csym. | |
| 1690 */ | |
| 1691 uint baseVtblOffset(BaseClass bc) | |
| 1692 { | |
| 1693 uint csymoffset; | |
| 1694 | |
| 1695 //printf("ClassDeclaration.baseVtblOffset('%s', bc = %p)\n", toChars(), bc); | |
| 1696 csymoffset = CLASSINFO_SIZE; | |
| 1697 csymoffset += vtblInterfaces.dim * (4 * PTRSIZE); | |
| 1698 | |
|
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1699 foreach (b; vtblInterfaces) |
| 73 | 1700 { |
| 1701 if (b == bc) | |
| 1702 return csymoffset; | |
| 1703 csymoffset += b.base.vtbl.dim * PTRSIZE; | |
| 1704 } | |
| 1705 | |
| 1706 static if (true) { | |
| 1707 // Put out the overriding interface vtbl[]s. | |
| 1708 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1709 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1710 ClassDeclaration cd; | |
| 1711 Array bvtbl; | |
| 1712 | |
| 1713 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1714 { | |
|
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1715 foreach(bs; cd.vtblInterfaces) |
| 73 | 1716 { |
| 1717 if (bs.fillVtbl(this, null, 0)) | |
| 1718 { | |
| 1719 if (bc == bs) | |
| 1720 { | |
| 1721 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1722 return csymoffset; | |
| 1723 } | |
| 1724 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1725 } | |
| 1726 } | |
| 1727 } | |
| 1728 } | |
| 1729 version (INTERFACE_VIRTUAL) { | |
| 89 | 1730 for (size_t i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 1731 { |
| 1732 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1733 ClassDeclaration cd; | |
| 1734 | |
| 1735 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1736 { | |
| 1737 //printf("\tbase class %s\n", cd.toChars()); | |
| 1738 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1739 { | |
| 1740 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1741 | |
| 1742 if (bc == bs) | |
| 1743 { | |
| 1744 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1745 return csymoffset; | |
| 1746 } | |
| 1747 if (b.base == bs.base) | |
| 1748 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1749 } | |
| 1750 } | |
| 1751 } | |
| 1752 } | |
| 1753 | |
| 1754 return ~0; | |
| 1755 } | |
| 1756 | |
| 1757 static private __gshared Classsym* scc; | |
| 1758 | |
| 1759 /************************************* | |
| 1760 * Create the "ClassInfo" symbol | |
| 1761 */ | |
| 1762 override Symbol* toSymbol() | |
| 1763 { | |
| 1764 if (!csym) | |
| 1765 { | |
| 1766 Symbol* s; | |
| 1767 | |
| 1768 if (!scc) | |
| 1769 scc = fake_classsym(Id.ClassInfo); | |
| 1770 | |
| 1771 s = toSymbolX("__Class", SC.SCextern, scc.Stype, "Z"); | |
| 1772 s.Sfl = FL.FLextern; | |
| 1773 s.Sflags |= SFL.SFLnodebug; | |
| 1774 csym = s; | |
| 1775 slist_add(s); | |
| 1776 } | |
| 1777 | |
| 1778 return csym; | |
| 1779 } | |
| 1780 | |
| 1781 /************************************* | |
| 1782 * This is accessible via the ClassData, but since it is frequently | |
| 1783 * needed directly (like for rtti comparisons), make it directly accessible. | |
| 1784 */ | |
| 1785 Symbol* toVtblSymbol() | |
| 1786 { | |
| 1787 if (!vtblsym) | |
| 1788 { | |
| 1789 if (!csym) | |
| 1790 toSymbol(); | |
| 1791 | |
| 1792 TYPE* t = type_alloc(TYM.TYnptr | mTY.mTYconst); | |
| 1793 t.Tnext = tsvoid; | |
| 1794 t.Tnext.Tcount++; | |
| 1795 t.Tmangle = mTYman.mTYman_d; | |
| 1796 | |
| 1797 Symbol* s = toSymbolX("__vtbl", SC.SCextern, t, "Z"); | |
| 1798 s.Sflags |= SFL.SFLnodebug; | |
| 1799 s.Sfl = FL.FLextern; | |
| 1800 vtblsym = s; | |
| 1801 slist_add(s); | |
| 1802 } | |
| 1803 return vtblsym; | |
| 1804 } | |
| 1805 | |
| 1806 // Generate the data for the static initializer. | |
| 1807 void toDt(dt_t **pdt) | |
| 1808 { | |
| 1809 //printf("ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1810 | |
| 1811 // Put in first two members, the vtbl[] and the monitor | |
| 1812 dtxoff(pdt, toVtblSymbol(), 0, TYnptr); | |
| 1813 dtdword(pdt, 0); // monitor | |
| 1814 | |
| 1815 // Put in the rest | |
| 1816 toDt2(pdt, this); | |
| 1817 | |
| 1818 //printf("-ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1819 } | |
| 1820 | |
| 1821 void toDt2(dt_t** pdt, ClassDeclaration cd) | |
| 1822 { | |
| 1823 uint offset; | |
| 89 | 1824 |
| 73 | 1825 dt_t* dt; |
| 1826 uint csymoffset; | |
| 1827 | |
| 1828 version (LOG) { | |
| 1829 printf("ClassDeclaration.toDt2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 1830 } | |
| 1831 if (baseClass) | |
| 1832 { | |
| 1833 baseClass.toDt2(pdt, cd); | |
| 1834 offset = baseClass.structsize; | |
| 1835 } | |
| 1836 else | |
| 1837 { | |
| 1838 offset = 8; | |
| 1839 } | |
| 1840 | |
| 1841 // Note equivalence of this loop to struct's | |
| 89 | 1842 for (size_t i = 0; i < fields.dim; i++) |
| 73 | 1843 { |
| 79 | 1844 VarDeclaration v = cast(VarDeclaration)fields[i]; |
| 73 | 1845 Initializer init; |
| 1846 | |
| 1847 //printf("\t\tv = '%s' v.offset = %2d, offset = %2d\n", v.toChars(), v.offset, offset); | |
| 1848 dt = null; | |
| 1849 init = v.init; | |
| 1850 if (init) | |
| 1851 { | |
| 1852 //printf("\t\t%s has initializer %s\n", v.toChars(), init.toChars()); | |
| 1853 ExpInitializer ei = init.isExpInitializer(); | |
| 1854 Type tb = v.type.toBasetype(); | |
| 1855 if (ei && tb.ty == Tsarray) | |
| 1856 (cast(TypeSArray)tb).toDtElem(&dt, ei.exp); | |
| 1857 else | |
| 1858 dt = init.toDt(); | |
| 1859 } | |
| 1860 else if (v.offset >= offset) | |
| 1861 { //printf("\t\tdefault initializer\n"); | |
| 1862 v.type.toDt(&dt); | |
| 1863 } | |
| 1864 if (dt) | |
| 1865 { | |
| 1866 if (v.offset < offset) | |
| 1867 error("duplicated union initialization for %s", v.toChars()); | |
| 1868 else | |
| 1869 { | |
| 1870 if (offset < v.offset) | |
| 1871 dtnzeros(pdt, v.offset - offset); | |
| 1872 dtcat(pdt, dt); | |
| 1873 offset = v.offset + cast(uint)v.type.size(); | |
| 1874 } | |
| 1875 } | |
| 1876 } | |
| 1877 | |
| 1878 // Interface vptr initializations | |
| 1879 toSymbol(); // define csym | |
| 1880 | |
|
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|
1881 foreach (b; vtblInterfaces) |
| 73 | 1882 { |
| 1883 /// version (1 || INTERFACE_VIRTUAL) { | |
| 1884 for (ClassDeclaration cd2 = cd; 1; cd2 = cd2.baseClass) | |
| 1885 { | |
| 1886 assert(cd2); | |
| 1887 csymoffset = cd2.baseVtblOffset(b); | |
| 1888 if (csymoffset != ~0) | |
| 1889 { | |
| 1890 if (offset < b.offset) | |
| 1891 dtnzeros(pdt, b.offset - offset); | |
| 1892 dtxoff(pdt, cd2.toSymbol(), csymoffset, TYnptr); | |
| 1893 break; | |
| 1894 } | |
| 1895 } | |
| 1896 /// } else { | |
| 1897 /// csymoffset = baseVtblOffset(b); | |
| 1898 /// assert(csymoffset != ~0); | |
| 1899 /// dtxoff(pdt, csym, csymoffset, TYnptr); | |
| 1900 /// } | |
| 1901 offset = b.offset + 4; | |
| 1902 } | |
| 1903 | |
| 1904 if (offset < structsize) | |
| 1905 dtnzeros(pdt, structsize - offset); | |
| 1906 } | |
| 1907 | |
| 1908 Symbol* vtblsym; | |
| 1909 | |
| 1910 ///ClassDeclaration isClassDeclaration() { return cast(ClassDeclaration)this; } /// huh? | |
| 1911 override ClassDeclaration isClassDeclaration() { return this; } | |
| 1912 } |