Mercurial > projects > ddmd
annotate dmd/ClassDeclaration.d @ 135:af1bebfd96a4 dmd2037
dmd 2.038
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Mon, 13 Sep 2010 22:19:42 +0100 |
| parents | 60bb0fe4563e |
| children | 90821c10b6a7 |
| 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 } | |
| 135 | 261 |
| 262 if (id == Id.TypeInfo_Wild) | |
| 263 { | |
| 264 if (Type.typeinfowild) | |
| 265 Type.typeinfowild.error("%s", msg); | |
| 266 Type.typeinfowild = this; | |
| 267 } | |
| 73 | 268 } |
| 269 } | |
| 270 | |
| 271 if (id is Id.Object_) | |
| 272 { | |
| 273 if (object) | |
| 274 object.error("%s", msg); | |
| 275 object = this; | |
| 276 } | |
| 277 | |
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278 // if (id is Id.ClassInfo) |
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279 if (id is Id.TypeInfo_Class) |
| 73 | 280 { |
| 281 if (classinfo) | |
| 282 classinfo.error("%s", msg); | |
| 283 classinfo = this; | |
| 284 } | |
| 285 | |
| 286 if (id is Id.ModuleInfo) | |
| 287 { | |
| 288 if (Module.moduleinfo) | |
| 289 Module.moduleinfo.error("%s", msg); | |
| 290 Module.moduleinfo = this; | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 com = 0; | |
| 295 isauto = false; | |
| 296 isabstract = false; | |
| 297 inuse = 0; | |
| 298 } | |
| 299 | |
| 300 override Dsymbol syntaxCopy(Dsymbol s) | |
| 301 { | |
| 302 ClassDeclaration cd; | |
| 303 | |
| 304 //printf("ClassDeclaration.syntaxCopy('%s')\n", toChars()); | |
| 305 if (s) | |
| 306 cd = cast(ClassDeclaration)s; | |
| 307 else | |
| 308 cd = new ClassDeclaration(loc, ident, null); | |
| 309 | |
| 310 cd.storage_class |= storage_class; | |
| 311 | |
| 312 cd.baseclasses.setDim(this.baseclasses.dim); | |
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313 for (size_t i = 0; i < cd.baseclasses.dim; i++) |
| 73 | 314 { |
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315 auto b = this.baseclasses[i]; |
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316 auto b2 = new BaseClass(b.type.syntaxCopy(), b.protection); |
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317 cd.baseclasses[i] = b2; |
| 73 | 318 } |
| 319 | |
| 320 ScopeDsymbol.syntaxCopy(cd); | |
| 321 return cd; | |
| 322 } | |
| 323 | |
| 324 override void semantic(Scope sc) | |
| 325 { | |
| 326 uint offset; | |
| 327 | |
| 328 //printf("ClassDeclaration.semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 329 //printf("\tparent = %p, '%s'\n", sc.parent, sc.parent ? sc.parent.toChars() : ""); | |
| 330 //printf("sc.stc = %x\n", sc.stc); | |
| 331 | |
| 332 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 333 | |
| 334 if (!ident) // if anonymous class | |
| 335 { | |
| 336 string id = "__anonclass"; | |
| 337 ident = Identifier.generateId(id); | |
| 338 } | |
| 339 | |
| 340 if (!sc) | |
| 341 sc = scope_; | |
| 342 | |
| 343 if (!parent && sc.parent && !sc.parent.isModule()) | |
| 344 parent = sc.parent; | |
| 345 | |
| 346 type = type.semantic(loc, sc); | |
| 347 handle = type; | |
| 348 | |
| 349 if (!members) // if forward reference | |
| 350 { | |
| 351 //printf("\tclass '%s' is forward referenced\n", toChars()); | |
| 352 return; | |
| 353 } | |
| 354 if (symtab) | |
| 355 { if (!scope_) | |
| 356 { //printf("\tsemantic for '%s' is already completed\n", toChars()); | |
| 357 return; // semantic() already completed | |
| 358 } | |
| 359 } | |
| 360 else | |
| 361 symtab = new DsymbolTable(); | |
| 362 | |
| 363 Scope scx = null; | |
| 364 if (scope_) | |
| 365 { sc = scope_; | |
| 366 scx = scope_; // save so we don't make redundant copies | |
| 367 scope_ = null; | |
| 368 } | |
| 369 version (IN_GCC) { | |
| 370 methods.setDim(0); | |
| 371 } | |
| 372 | |
| 373 if (sc.stc & STC.STCdeprecated) | |
| 374 { | |
| 375 isdeprecated = 1; | |
| 376 } | |
| 377 | |
| 378 if (sc.linkage == LINK.LINKcpp) | |
| 379 error("cannot create C++ classes"); | |
| 380 | |
| 381 // Expand any tuples in baseclasses[] | |
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382 for (size_t i = 0; i < baseclasses.dim; ) |
| 73 | 383 { |
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384 auto b = baseclasses[i]; |
| 73 | 385 //printf("test1 %s %s\n", toChars(), b.type.toChars()); |
| 386 b.type = b.type.semantic(loc, sc); | |
| 387 //printf("test2\n"); | |
| 388 Type tb = b.type.toBasetype(); | |
| 389 | |
| 390 if (tb.ty == TY.Ttuple) | |
| 391 { | |
| 392 TypeTuple tup = cast(TypeTuple)tb; | |
| 393 enum PROT protection = b.protection; | |
| 394 baseclasses.remove(i); | |
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395 size_t dim = Parameter.dim(tup.arguments); |
| 73 | 396 for (size_t j = 0; j < dim; j++) |
| 397 { | |
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398 auto arg = Parameter.getNth(tup.arguments, j); |
| 73 | 399 b = new BaseClass(arg.type, protection); |
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400 baseclasses.insert(i + j, b); |
| 73 | 401 } |
| 402 } | |
| 403 else | |
| 404 i++; | |
| 405 } | |
| 406 | |
| 407 // See if there's a base class as first in baseclasses[] | |
| 408 if (baseclasses.dim) | |
| 409 { | |
| 410 TypeClass tc; | |
| 411 BaseClass b; | |
| 412 Type tb; | |
| 413 | |
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414 b = baseclasses[0]; |
| 73 | 415 //b.type = b.type.semantic(loc, sc); |
| 416 tb = b.type.toBasetype(); | |
| 417 if (tb.ty != TY.Tclass) | |
| 418 { error("base type must be class or interface, not %s", b.type.toChars()); | |
| 419 baseclasses.remove(0); | |
| 420 } | |
| 421 else | |
| 422 { | |
| 423 tc = cast(TypeClass)(tb); | |
| 424 | |
| 425 if (tc.sym.isDeprecated()) | |
| 426 { | |
| 427 if (!isDeprecated()) | |
| 428 { | |
| 429 // Deriving from deprecated class makes this one deprecated too | |
| 430 isdeprecated = 1; | |
| 431 | |
| 432 tc.checkDeprecated(loc, sc); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 if (tc.sym.isInterfaceDeclaration()) { | |
| 437 ; | |
| 438 } else { | |
| 439 for (ClassDeclaration cdb = tc.sym; cdb; cdb = cdb.baseClass) | |
| 440 { | |
| 441 if (cdb == this) | |
| 442 { | |
| 443 error("circular inheritance"); | |
| 444 baseclasses.remove(0); | |
| 445 goto L7; | |
| 446 } | |
| 447 } | |
| 448 if (!tc.sym.symtab || tc.sym.sizeok == 0) | |
| 449 { // Try to resolve forward reference | |
| 450 if (sc.mustsemantic && tc.sym.scope_) | |
| 451 tc.sym.semantic(null); | |
| 452 } | |
| 453 if (!tc.sym.symtab || tc.sym.scope_ || tc.sym.sizeok == 0) | |
| 454 { | |
| 455 //printf("%s: forward reference of base class %s\n", toChars(), tc.sym.toChars()); | |
| 456 //error("forward reference of base class %s", baseClass.toChars()); | |
| 457 // Forward reference of base class, try again later | |
| 458 //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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459 scope_ = scx ? scx : sc.clone(); |
| 73 | 460 scope_.setNoFree(); |
| 461 if (tc.sym.scope_) | |
| 462 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 463 scope_.module_.addDeferredSemantic(this); | |
| 464 return; | |
| 465 } | |
| 466 else | |
| 467 { baseClass = tc.sym; | |
| 468 b.base = baseClass; | |
| 469 } | |
| 470 L7: ; | |
| 471 } | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 // Treat the remaining entries in baseclasses as interfaces | |
| 476 // Check for errors, handle forward references | |
| 89 | 477 for (int i = (baseClass ? 1 : 0); i < baseclasses.dim; ) |
| 73 | 478 { TypeClass tc; |
| 479 BaseClass b; | |
| 480 Type tb; | |
| 481 | |
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482 b = baseclasses[i]; |
| 73 | 483 b.type = b.type.semantic(loc, sc); |
| 484 tb = b.type.toBasetype(); | |
| 485 if (tb.ty == TY.Tclass) | |
| 486 tc = cast(TypeClass)tb; | |
| 487 else | |
| 488 tc = null; | |
| 489 if (!tc || !tc.sym.isInterfaceDeclaration()) | |
| 490 { | |
| 491 error("base type must be interface, not %s", b.type.toChars()); | |
| 492 baseclasses.remove(i); | |
| 493 continue; | |
| 494 } | |
| 495 else | |
| 496 { | |
| 497 if (tc.sym.isDeprecated()) | |
| 498 { | |
| 499 if (!isDeprecated()) | |
| 500 { | |
| 501 // Deriving from deprecated class makes this one deprecated too | |
| 502 isdeprecated = 1; | |
| 503 | |
| 504 tc.checkDeprecated(loc, sc); | |
| 505 } | |
| 506 } | |
| 507 | |
| 508 // Check for duplicate interfaces | |
| 509 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 510 { | |
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511 auto b2 = baseclasses[j]; |
| 73 | 512 if (b2.base == tc.sym) |
| 513 error("inherits from duplicate interface %s", b2.base.toChars()); | |
| 514 } | |
| 515 | |
| 516 if (!tc.sym.symtab) | |
| 517 { // Try to resolve forward reference | |
| 518 if (sc.mustsemantic && tc.sym.scope_) | |
| 519 tc.sym.semantic(null); | |
| 520 } | |
| 521 | |
| 522 b.base = tc.sym; | |
| 523 if (!b.base.symtab || b.base.scope_) | |
| 524 { | |
| 525 //error("forward reference of base class %s", baseClass.toChars()); | |
| 526 // Forward reference of base, try again later | |
| 527 //printf("\ttry later, forward reference of base %s\n", baseClass.toChars()); | |
|
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|
528 scope_ = scx ? scx : sc.clone(); |
| 73 | 529 scope_.setNoFree(); |
| 530 if (tc.sym.scope_) | |
| 531 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 532 scope_.module_.addDeferredSemantic(this); | |
| 533 return; | |
| 534 } | |
| 535 } | |
| 536 i++; | |
| 537 } | |
| 538 | |
| 539 | |
| 540 // If no base class, and this is not an Object, use Object as base class | |
| 541 if (!baseClass && ident !is Id.Object_) | |
| 542 { | |
| 543 // BUG: what if Object is redefined in an inner scope? | |
| 544 Type tbase = new TypeIdentifier(Loc(0), Id.Object_); | |
| 545 BaseClass b; | |
| 546 TypeClass tc; | |
| 547 Type bt; | |
| 548 | |
| 549 if (!object) | |
| 550 { | |
| 551 error("missing or corrupt object.d"); | |
| 552 fatal(); | |
| 553 } | |
| 554 bt = tbase.semantic(loc, sc).toBasetype(); | |
| 555 b = new BaseClass(bt, PROT.PROTpublic); | |
|
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|
556 baseclasses.shift(b); |
| 73 | 557 assert(b.type.ty == TY.Tclass); |
| 558 tc = cast(TypeClass)(b.type); | |
| 559 baseClass = tc.sym; | |
| 560 assert(!baseClass.isInterfaceDeclaration()); | |
| 561 b.base = baseClass; | |
| 562 } | |
| 563 | |
| 564 interfaces_dim = baseclasses.dim; | |
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565 interfaces = baseclasses.ptr; |
| 73 | 566 |
| 567 if (baseClass) | |
| 568 { | |
| 569 if (baseClass.storage_class & STC.STCfinal) | |
| 570 error("cannot inherit from final class %s", baseClass.toChars()); | |
| 571 | |
| 572 interfaces_dim--; | |
| 573 interfaces++; | |
| 574 | |
| 575 // Copy vtbl[] from base class | |
| 576 vtbl.setDim(baseClass.vtbl.dim); | |
| 577 memcpy(vtbl.data, baseClass.vtbl.data, (void*).sizeof * vtbl.dim); | |
| 578 | |
| 579 // Inherit properties from base class | |
| 580 com = baseClass.isCOMclass(); | |
| 581 isauto = baseClass.isauto; | |
| 582 vthis = baseClass.vthis; | |
| 583 storage_class |= baseClass.storage_class & STC.STC_TYPECTOR; | |
| 584 } | |
| 585 else | |
| 586 { | |
| 587 // No base class, so this is the root of the class hierarchy | |
| 588 vtbl.setDim(0); | |
| 589 vtbl.push(cast(void*)this); // leave room for classinfo as first member | |
| 590 } | |
| 591 | |
| 592 protection = sc.protection; | |
| 593 storage_class |= sc.stc; | |
| 594 | |
| 595 if (sizeok == 0) | |
| 596 { | |
| 597 interfaceSemantic(sc); | |
| 598 | |
|
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|
599 foreach (s; members) |
| 73 | 600 s.addMember(sc, this, true); |
| 601 | |
| 602 /* If this is a nested class, add the hidden 'this' | |
| 603 * member which is a pointer to the enclosing scope. | |
| 604 */ | |
| 605 if (vthis) // if inheriting from nested class | |
| 606 { // Use the base class's 'this' member | |
| 607 isnested = true; | |
| 608 if (storage_class & STC.STCstatic) | |
| 609 error("static class cannot inherit from nested class %s", baseClass.toChars()); | |
| 610 if (toParent2() != baseClass.toParent2()) | |
| 611 { | |
| 612 if (toParent2()) | |
| 613 { | |
| 614 error("is nested within %s, but super class %s is nested within %s", | |
| 615 toParent2().toChars(), | |
| 616 baseClass.toChars(), | |
| 617 baseClass.toParent2().toChars()); | |
| 618 } | |
| 619 else | |
| 620 { | |
| 621 error("is not nested, but super class %s is nested within %s", | |
| 622 baseClass.toChars(), | |
| 623 baseClass.toParent2().toChars()); | |
| 624 } | |
| 625 isnested = false; | |
| 626 } | |
| 627 } | |
| 628 else if (!(storage_class & STC.STCstatic)) | |
| 629 { | |
| 630 Dsymbol s = toParent2(); | |
| 631 if (s) | |
| 632 { | |
| 633 AggregateDeclaration ad = s.isClassDeclaration(); | |
| 634 FuncDeclaration fd = s.isFuncDeclaration(); | |
| 635 | |
| 636 if (ad || fd) | |
| 637 { isnested = true; | |
| 638 Type t; | |
| 639 if (ad) | |
| 640 t = ad.handle; | |
| 641 else if (fd) | |
| 642 { | |
| 643 AggregateDeclaration ad2 = fd.isMember2(); | |
| 644 if (ad2) | |
| 645 t = ad2.handle; | |
| 646 else | |
| 647 { | |
| 648 t = Type.tvoidptr; | |
| 649 } | |
| 650 } | |
| 651 else | |
| 652 assert(0); | |
| 653 if (t.ty == TY.Tstruct) // ref to struct | |
| 654 t = Type.tvoidptr; | |
| 655 assert(!vthis); | |
| 656 vthis = new ThisDeclaration(loc, t); | |
|
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diff
changeset
|
657 members.push(vthis); |
| 73 | 658 } |
| 659 } | |
| 660 } | |
| 661 } | |
| 662 | |
| 663 if (storage_class & (STC.STCauto | STC.STCscope)) | |
| 664 isauto = true; | |
| 665 if (storage_class & STC.STCabstract) | |
| 666 isabstract = true; | |
| 667 if (storage_class & STC.STCimmutable) | |
| 668 type = type.invariantOf(); | |
| 669 else if (storage_class & STC.STCconst) | |
| 670 type = type.constOf(); | |
| 671 else if (storage_class & STC.STCshared) | |
| 672 type = type.sharedOf(); | |
| 673 | |
| 674 sc = sc.push(this); | |
| 675 sc.stc &= ~(STC.STCfinal | STC.STCauto | STC.STCscope | STC.STCstatic | | |
| 676 STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCtls | STC.STCgshared); | |
| 677 sc.stc |= storage_class & STC.STC_TYPECTOR; | |
| 678 sc.parent = this; | |
| 679 sc.inunion = 0; | |
| 680 | |
| 681 if (isCOMclass()) | |
| 682 { | |
| 114 | 683 version (Windows) { |
| 73 | 684 sc.linkage = LINK.LINKwindows; |
| 685 } else { | |
| 686 /* This enables us to use COM objects under Linux and | |
| 687 * work with things like XPCOM | |
| 688 */ | |
| 689 sc.linkage = LINK.LINKc; | |
| 690 } | |
| 691 } | |
| 692 sc.protection = PROT.PROTpublic; | |
| 693 sc.explicitProtection = 0; | |
| 694 sc.structalign = 8; | |
| 695 structalign = sc.structalign; | |
| 696 if (baseClass) | |
| 697 { sc.offset = baseClass.structsize; | |
| 698 alignsize = baseClass.alignsize; | |
| 699 // if (isnested) | |
| 700 // sc.offset += PTRSIZE; // room for uplevel context pointer | |
| 701 } | |
| 702 else | |
| 703 { sc.offset = PTRSIZE * 2; // allow room for __vptr and __monitor | |
| 704 alignsize = PTRSIZE; | |
| 705 } | |
| 706 structsize = sc.offset; | |
| 92 | 707 Scope scsave = sc.clone(); |
| 73 | 708 sizeok = 0; |
| 135 | 709 |
| 710 /* Set scope so if there are forward references, we still might be able to | |
| 711 * resolve individual members like enums. | |
| 712 */ | |
| 713 foreach (s; members) | |
| 714 { | |
| 715 /* There are problems doing this in the general case because | |
| 716 * Scope keeps track of things like 'offset' | |
| 717 */ | |
| 718 if (s.isEnumDeclaration() || (s.isAggregateDeclaration() && s.ident)) | |
| 719 { | |
| 720 //printf("setScope %s %s\n", s->kind(), s->toChars()); | |
| 721 s.setScope(sc); | |
| 722 } | |
| 723 } | |
| 724 | |
| 89 | 725 foreach (Dsymbol s; members) { |
| 73 | 726 s.semantic(sc); |
| 89 | 727 } |
| 73 | 728 |
| 729 if (sizeok == 2) | |
| 730 { // semantic() failed because of forward references. | |
| 731 // Unwind what we did, and defer it for later | |
| 732 fields.setDim(0); | |
| 733 structsize = 0; | |
| 734 alignsize = 0; | |
| 735 structalign = 0; | |
| 736 | |
| 737 sc = sc.pop(); | |
| 738 | |
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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)
korDen
parents:
79
diff
changeset
|
739 scope_ = scx ? scx : sc.clone(); |
| 73 | 740 scope_.setNoFree(); |
| 741 scope_.module_.addDeferredSemantic(this); | |
| 742 | |
| 743 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); | |
| 744 return; | |
| 745 } | |
| 746 | |
| 747 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 748 | |
| 749 structsize = sc.offset; | |
| 750 //members.print(); | |
| 751 | |
| 752 /* Look for special member functions. | |
| 753 * They must be in this class, not in a base class. | |
| 754 */ | |
| 755 ctor = cast(CtorDeclaration)search(Loc(0), Id.ctor, 0); | |
| 756 if (ctor && (ctor.toParent() != this || !ctor.isCtorDeclaration())) | |
| 757 ctor = null; | |
| 758 | |
| 759 // dtor = (DtorDeclaration *)search(Id.dtor, 0); | |
| 760 // if (dtor && dtor.toParent() != this) | |
| 761 // dtor = null; | |
| 762 | |
| 763 // inv = (InvariantDeclaration *)search(Id.classInvariant, 0); | |
| 764 // if (inv && inv.toParent() != this) | |
| 765 // inv = null; | |
| 766 | |
| 767 // Can be in base class | |
| 768 aggNew = cast(NewDeclaration)search(Loc(0), Id.classNew, 0); | |
| 769 aggDelete = cast(DeleteDeclaration)search(Loc(0), Id.classDelete, 0); | |
| 770 | |
| 771 // If this class has no constructor, but base class does, create | |
| 772 // a constructor: | |
| 773 // this() { } | |
| 774 if (!ctor && baseClass && baseClass.ctor) | |
| 775 { | |
| 776 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 777 CtorDeclaration ctor = new CtorDeclaration(loc, Loc(0), null, 0); | |
| 778 ctor.fbody = new CompoundStatement(Loc(0), new Statements()); | |
|
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diff
changeset
|
779 members.push(ctor); |
| 73 | 780 ctor.addMember(sc, this, true); |
| 781 sc = scsave; // why? What about sc.nofree? /// | |
| 782 sc.offset = structsize; | |
| 783 ctor.semantic(sc); | |
| 784 this.ctor = ctor; | |
| 785 defaultCtor = ctor; | |
| 786 } | |
| 787 | |
| 788 static if (false) { | |
| 789 if (baseClass) | |
| 790 { if (!aggDelete) | |
| 791 aggDelete = baseClass.aggDelete; | |
| 792 if (!aggNew) | |
| 793 aggNew = baseClass.aggNew; | |
| 794 } | |
| 795 } | |
| 796 | |
| 797 // Allocate instance of each new interface | |
|
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|
798 foreach (b; vtblInterfaces) |
| 73 | 799 { |
| 800 uint thissize = PTRSIZE; | |
| 801 | |
| 802 alignmember(structalign, thissize, &sc.offset); | |
| 803 assert(b.offset == 0); | |
| 804 b.offset = sc.offset; | |
| 805 | |
| 806 // Take care of single inheritance offsets | |
| 807 while (b.baseInterfaces.length) | |
| 808 { | |
| 809 b = b.baseInterfaces[0]; | |
| 810 b.offset = sc.offset; | |
| 811 } | |
| 812 | |
| 813 sc.offset += thissize; | |
| 814 if (alignsize < thissize) | |
| 815 alignsize = thissize; | |
| 816 } | |
| 817 structsize = sc.offset; | |
| 818 sizeok = 1; | |
| 819 Module.dprogress++; | |
| 820 | |
| 821 dtor = buildDtor(sc); | |
| 822 | |
| 823 sc.pop(); | |
| 824 | |
| 825 static if (false) { // Do not call until toObjfile() because of forward references | |
| 826 // Fill in base class vtbl[]s | |
| 89 | 827 for (int i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 828 { |
| 829 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 830 | |
| 831 //b.fillVtbl(this, &b.vtbl, 1); | |
| 832 } | |
| 833 } | |
| 834 //printf("-ClassDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 835 } | |
| 836 | |
| 837 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 838 { | |
| 839 if (!isAnonymous()) | |
| 840 { | |
| 841 buf.printf("%s ", kind()); | |
| 842 buf.writestring(toChars()); | |
| 843 if (baseclasses.dim) | |
| 844 buf.writestring(" : "); | |
| 845 } | |
|
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changeset
|
846 foreach (size_t i, BaseClass b; baseclasses) |
| 73 | 847 { |
| 848 if (i) | |
| 849 buf.writeByte(','); | |
| 850 //buf.writestring(b.base.ident.toChars()); | |
| 851 b.type.toCBuffer(buf, null, hgs); | |
| 852 } | |
| 853 if (members) | |
| 854 { | |
| 855 buf.writenl(); | |
| 856 buf.writeByte('{'); | |
| 857 buf.writenl(); | |
|
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Expressions -> Vector!Expression
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parents:
79
diff
changeset
|
858 foreach (s; members) |
| 73 | 859 { |
| 860 buf.writestring(" "); | |
| 861 s.toCBuffer(buf, hgs); | |
| 862 } | |
| 863 buf.writestring("}"); | |
| 864 } | |
| 865 else | |
| 866 buf.writeByte(';'); | |
| 867 buf.writenl(); | |
| 868 } | |
| 869 | |
| 870 /********************************************* | |
| 871 * Determine if 'this' is a base class of cd. | |
| 872 * This is used to detect circular inheritance only. | |
| 873 */ | |
| 874 int isBaseOf2(ClassDeclaration cd) | |
| 875 { | |
| 876 if (!cd) | |
| 877 return 0; | |
| 878 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
|
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changeset
|
879 foreach (b; cd.baseclasses) |
| 73 | 880 { |
| 881 if (b.base is this || isBaseOf2(b.base)) | |
| 882 return 1; | |
| 883 } | |
| 884 return 0; | |
| 885 } | |
| 886 | |
| 887 /******************************************* | |
| 888 * Determine if 'this' is a base class of cd. | |
| 889 */ | |
| 890 /// #define OFFSET_RUNTIME 0x76543210 | |
| 891 bool isBaseOf(ClassDeclaration cd, int* poffset) | |
| 892 { | |
| 893 if (!cd) | |
| 894 return 0; | |
| 895 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
|
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changeset
|
896 foreach (b; cd.baseclasses) |
| 73 | 897 { |
| 898 if (b.base == this || isBaseOf2(b.base)) | |
| 899 return 1; | |
| 900 } | |
| 901 | |
| 902 return 0; | |
| 903 } | |
| 904 | |
| 905 override Dsymbol search(Loc, Identifier ident, int flags) | |
| 906 { | |
| 907 Dsymbol s; | |
| 908 //printf("%s.ClassDeclaration.search('%s')\n", toChars(), ident.toChars()); | |
| 909 | |
| 910 if (scope_) | |
| 911 { | |
| 912 Scope sc = scope_; | |
| 913 sc.mustsemantic++; | |
| 914 semantic(sc); | |
| 915 sc.mustsemantic--; | |
| 916 } | |
| 917 | |
| 918 if (!members || !symtab || scope_) | |
| 919 { | |
| 920 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 921 //*(char*)0=0; | |
| 922 return null; | |
| 923 } | |
| 924 | |
| 925 s = ScopeDsymbol.search(loc, ident, flags); | |
| 926 if (!s) | |
| 927 { | |
| 928 // Search bases classes in depth-first, left to right order | |
| 929 | |
| 930 int i; | |
| 931 | |
|
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diff
changeset
|
932 foreach (b; baseclasses) |
| 73 | 933 { |
| 934 if (b.base) | |
| 935 { | |
| 936 if (!b.base.symtab) | |
| 937 error("base %s is forward referenced", b.base.ident.toChars()); | |
| 938 else | |
| 939 { | |
| 940 s = b.base.search(loc, ident, flags); | |
| 941 if (s is this) // happens if s is nested in this and derives from this | |
| 942 s = null; | |
| 943 else if (s) | |
| 944 break; | |
| 945 } | |
| 946 } | |
| 947 } | |
| 948 } | |
| 949 return s; | |
| 950 } | |
| 951 | |
| 952 version (DMDV2) { | |
| 953 bool isFuncHidden(FuncDeclaration fd) | |
| 954 { | |
| 955 //printf("ClassDeclaration::isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toChars()); | |
| 956 Dsymbol s = search(Loc(0), fd.ident, 4|2); | |
| 957 if (!s) | |
| 958 { | |
| 959 //printf("not found\n"); | |
| 960 /* Because, due to a hack, if there are multiple definitions | |
| 961 * of fd.ident, null is returned. | |
| 962 */ | |
| 963 return false; | |
| 964 } | |
| 965 | |
| 966 Param p; p.fd = fd; | |
| 967 | |
| 968 s = s.toAlias(); | |
| 969 OverloadSet os = s.isOverloadSet(); | |
| 970 if (os) | |
| 971 { | |
|
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parents:
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diff
changeset
|
972 foreach (s2; os.a) |
| 73 | 973 { |
|
84
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parents:
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diff
changeset
|
974 auto f2 = s2.isFuncDeclaration(); |
| 73 | 975 if (f2 && overloadApply(f2, &p.isf, &p)) |
| 976 return false; | |
| 977 } | |
| 978 return true; | |
| 979 } | |
| 980 else | |
| 981 { | |
| 982 FuncDeclaration fdstart = s.isFuncDeclaration(); | |
| 983 //printf("%s fdstart = %p\n", s.kind(), fdstart); | |
| 984 return !overloadApply(fdstart, &p.isf, &p); | |
| 985 } | |
| 986 } | |
| 987 } | |
| 988 FuncDeclaration findFunc(Identifier ident, TypeFunction tf) | |
| 989 { | |
| 990 //printf("ClassDeclaration.findFunc(%s, %s) %s\n", ident.toChars(), tf.toChars(), toChars()); | |
| 991 | |
| 992 ClassDeclaration cd = this; | |
| 993 Array vtbl = cd.vtbl; | |
| 994 while (true) | |
| 995 { | |
| 996 for (size_t i = 0; i < vtbl.dim; i++) | |
| 997 { | |
| 998 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 999 if (!fd) | |
| 1000 continue; // the first entry might be a ClassInfo | |
| 1001 | |
| 1002 //printf("\t[%d] = %s\n", i, fd.toChars()); | |
| 1003 if (ident == fd.ident && | |
| 1004 //tf.equals(fd.type) | |
| 1005 fd.type.covariant(tf) == 1 | |
| 1006 ) | |
| 1007 { //printf("\t\tfound\n"); | |
| 1008 return fd; | |
| 1009 } | |
| 1010 //else printf("\t\t%d\n", fd.type.covariant(tf)); | |
| 1011 } | |
| 1012 if (!cd) | |
| 1013 break; | |
| 1014 | |
| 1015 vtbl = cd.vtblFinal; | |
| 1016 cd = cd.baseClass; | |
| 1017 } | |
| 1018 | |
| 1019 return null; | |
| 1020 } | |
| 1021 | |
| 1022 void interfaceSemantic(Scope sc) | |
| 1023 { | |
| 1024 InterfaceDeclaration id = isInterfaceDeclaration(); | |
| 1025 | |
| 1026 vtblInterfaces = new BaseClasses(); | |
| 1027 vtblInterfaces.reserve(interfaces_dim); | |
| 1028 | |
| 1029 for (size_t i = 0; i < interfaces_dim; i++) | |
| 1030 { | |
| 1031 BaseClass b = interfaces[i]; | |
| 1032 | |
| 1033 // If this is an interface, and it derives from a COM interface, | |
| 1034 // then this is a COM interface too. | |
| 1035 if (b.base.isCOMinterface()) | |
| 1036 com = 1; | |
| 1037 | |
| 1038 if (b.base.isCPPinterface() && id) | |
| 1039 id.cpp = 1; | |
| 1040 | |
|
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1041 vtblInterfaces.push(b); |
| 73 | 1042 b.copyBaseInterfaces(vtblInterfaces); |
| 1043 } | |
| 1044 } | |
| 1045 | |
|
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1046 version(DMDV1) |
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1047 { |
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1048 int isNested() |
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1049 { |
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1050 assert(false); |
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1051 } |
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1052 } |
| 73 | 1053 bool isCOMclass() |
| 1054 { | |
| 1055 return com; | |
| 1056 } | |
| 1057 | |
| 1058 bool isCOMinterface() | |
| 1059 { | |
| 1060 return false; | |
| 1061 } | |
| 1062 | |
| 1063 version (DMDV2) { | |
| 1064 bool isCPPinterface() | |
| 1065 { | |
| 1066 return false; | |
| 1067 } | |
| 1068 } | |
| 1069 bool isAbstract() | |
| 1070 { | |
| 1071 if (isabstract) | |
| 1072 return true; | |
| 1073 | |
| 1074 for (int i = 1; i < vtbl.dim; i++) | |
| 1075 { | |
| 1076 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1077 | |
| 1078 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1079 if (!fd || fd.isAbstract()) | |
| 1080 { | |
| 1081 isabstract = true; | |
| 1082 return true; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 return false; | |
| 1087 } | |
| 1088 | |
| 1089 int vtblOffset() | |
| 1090 { | |
| 1091 assert(false); | |
| 1092 } | |
| 1093 | |
| 1094 override string kind() | |
| 1095 { | |
| 1096 return "class"; | |
| 1097 } | |
| 1098 | |
| 1099 override string mangle() | |
| 1100 { | |
| 1101 Dsymbol parentsave = parent; | |
| 1102 | |
| 1103 //printf("ClassDeclaration.mangle() %s.%s\n", parent.toChars(), toChars()); | |
| 1104 | |
| 1105 /* These are reserved to the compiler, so keep simple | |
| 1106 * names for them. | |
| 1107 */ | |
| 1108 if (ident is Id.Exception) | |
| 1109 { | |
| 1110 if (parent.ident is Id.object) | |
| 1111 parent = null; | |
| 1112 } | |
| 1113 else if (ident is Id.TypeInfo || | |
| 1114 // ident is Id.Exception || | |
| 1115 ident is Id.TypeInfo_Struct || | |
| 1116 ident is Id.TypeInfo_Class || | |
| 1117 ident is Id.TypeInfo_Typedef || | |
| 1118 ident is Id.TypeInfo_Tuple || | |
| 1119 this is object || | |
| 1120 this is classinfo || | |
| 1121 this is Module.moduleinfo || | |
| 1122 ident.toChars().startsWith("TypeInfo_") | |
| 1123 ) | |
| 1124 { | |
| 1125 parent = null; | |
| 1126 } | |
| 1127 | |
| 1128 string id = Dsymbol.mangle(); | |
| 1129 parent = parentsave; | |
| 1130 return id; | |
| 1131 } | |
| 1132 | |
| 1133 override void toDocBuffer(OutBuffer buf) | |
| 1134 { | |
| 1135 assert(false); | |
| 1136 } | |
| 1137 | |
| 1138 override PROT getAccess(Dsymbol smember) // determine access to smember | |
| 1139 { | |
| 1140 PROT access_ret = PROT.PROTnone; | |
| 1141 | |
| 1142 version (LOG) { | |
| 1143 printf("+ClassDeclaration::getAccess(this = '%s', smember = '%s')\n", | |
| 1144 toChars(), smember.toChars()); | |
| 1145 } | |
| 1146 if (smember.toParent() is this) | |
| 1147 { | |
| 1148 access_ret = smember.prot(); | |
| 1149 } | |
| 1150 else | |
| 1151 { | |
| 1152 PROT access; | |
| 1153 | |
| 1154 if (smember.isDeclaration().isStatic()) | |
| 1155 { | |
| 1156 access_ret = smember.prot(); | |
| 1157 } | |
| 1158 | |
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1159 foreach (b; baseclasses) |
| 73 | 1160 { |
| 1161 access = b.base.getAccess(smember); | |
| 1162 switch (access) | |
| 1163 { | |
| 1164 case PROT.PROTnone: | |
| 1165 break; | |
| 1166 | |
| 1167 case PROT.PROTprivate: | |
| 1168 access = PROT.PROTnone; // private members of base class not accessible | |
| 1169 break; | |
| 1170 | |
| 1171 case PROT.PROTpackage: | |
| 1172 case PROT.PROTprotected: | |
| 1173 case PROT.PROTpublic: | |
| 1174 case PROT.PROTexport: | |
| 1175 // If access is to be tightened | |
| 1176 if (b.protection < access) | |
| 1177 access = b.protection; | |
| 1178 | |
| 1179 // Pick path with loosest access | |
| 1180 if (access > access_ret) | |
| 1181 access_ret = access; | |
| 1182 break; | |
| 1183 | |
| 1184 default: | |
| 1185 assert(0); | |
| 1186 } | |
| 1187 } | |
| 1188 } | |
| 1189 | |
| 1190 version (LOG) { | |
| 1191 printf("-ClassDeclaration::getAccess(this = '%s', smember = '%s') = %d\n", | |
| 1192 toChars(), smember.toChars(), access_ret); | |
| 1193 } | |
| 1194 | |
| 1195 return access_ret; | |
| 1196 } | |
| 1197 | |
| 1198 override void addLocalClass(ClassDeclarations aclasses) | |
| 1199 { | |
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1200 aclasses.push(this); |
| 73 | 1201 } |
| 1202 | |
| 1203 // Back end | |
| 1204 override void toObjFile(int multiobj) // compile to .obj file | |
| 1205 { | |
| 1206 uint offset; | |
| 1207 Symbol* sinit; | |
| 1208 enum_SC scclass; | |
| 1209 | |
| 1210 //printf("ClassDeclaration.toObjFile('%s')\n", toChars()); | |
| 1211 | |
| 1212 if (!members) | |
| 1213 return; | |
| 1214 | |
| 1215 if (multiobj) | |
| 1216 { | |
| 1217 obj_append(this); | |
| 1218 return; | |
| 1219 } | |
| 1220 | |
| 1221 if (global.params.symdebug) | |
| 1222 toDebug(); | |
| 1223 | |
| 1224 assert(!scope_); // semantic() should have been run to completion | |
| 1225 | |
| 1226 scclass = SCglobal; | |
| 1227 if (inTemplateInstance()) | |
| 1228 scclass = SCcomdat; | |
| 1229 | |
| 1230 // Put out the members | |
|
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1231 foreach (member; members) |
| 73 | 1232 member.toObjFile(0); |
| 1233 | |
| 1234 static if (false) { | |
| 1235 // Build destructor by aggregating dtors[] | |
| 1236 Symbol* sdtor; | |
| 1237 switch (dtors.dim) | |
| 1238 { | |
| 1239 case 0: | |
| 1240 // No destructors for this class | |
| 1241 sdtor = null; | |
| 1242 break; | |
| 1243 | |
| 1244 case 1: | |
| 1245 // One destructor, just use it directly | |
| 1246 sdtor = (cast(DtorDeclaration)dtors.data[0]).toSymbol(); | |
| 1247 break; | |
| 1248 | |
| 1249 default: | |
| 1250 { | |
| 1251 /* Build a destructor that calls all the | |
| 1252 * other destructors in dtors[]. | |
| 1253 */ | |
| 1254 | |
| 1255 elem* edtor = null; | |
| 1256 | |
| 1257 // Declare 'this' pointer for our new destructor | |
| 1258 Symbol* sthis = symbol_calloc("this"); | |
| 1259 sthis.Stype = type_fake(TYnptr); | |
| 1260 sthis.Stype.Tcount++; | |
| 1261 sthis.Sclass = SCfastpar; | |
| 1262 sthis.Spreg = AX; | |
| 1263 sthis.Sfl = FLauto; | |
| 1264 | |
| 1265 // Call each of the destructors in dtors[] | |
| 1266 // in reverse order | |
| 89 | 1267 for (size_t i = 0; i < dtors.dim; i++) |
| 73 | 1268 { |
| 1269 DtorDeclaration d = cast(DtorDeclaration)dtors.data[i]; | |
| 1270 Symbol* s = d.toSymbol(); | |
| 1271 elem* e = el_bin(OPcall, TYvoid, el_var(s), el_var(sthis)); | |
| 1272 edtor = el_combine(e, edtor); | |
| 1273 } | |
| 1274 | |
| 1275 // Create type for the function | |
| 1276 .type* t = type_alloc(TYjfunc); | |
| 1277 t.Tflags |= TFprototype | TFfixed; | |
| 1278 t.Tmangle = mTYman_d; | |
| 1279 t.Tnext = tsvoid; | |
| 1280 tsvoid.Tcount++; | |
| 1281 | |
| 1282 // Create the function, sdtor, and write it out | |
| 1283 localgot = null; | |
| 1284 sdtor = toSymbolX("__dtor", SCglobal, t, "FZv"); | |
| 1285 block* b = block_calloc(); | |
| 1286 b.BC = BCret; | |
| 1287 b.Belem = edtor; | |
| 1288 sdtor.Sfunc.Fstartblock = b; | |
| 1289 cstate.CSpsymtab = &sdtor.Sfunc.Flocsym; | |
| 1290 symbol_add(sthis); | |
| 1291 writefunc(sdtor); | |
| 1292 } | |
| 1293 } | |
| 1294 } | |
| 1295 | |
| 1296 // Generate C symbols | |
| 1297 toSymbol(); | |
| 1298 toVtblSymbol(); | |
| 1299 sinit = toInitializer(); | |
| 1300 | |
| 1301 ////////////////////////////////////////////// | |
| 1302 | |
| 1303 // Generate static initializer | |
| 1304 sinit.Sclass = scclass; | |
| 1305 sinit.Sfl = FLdata; | |
| 1306 version (ELFOBJ) { // Burton | |
| 1307 sinit.Sseg = Segment.CDATA; | |
| 1308 } | |
| 1309 version (MACHOBJ) { | |
| 1310 sinit.Sseg = Segment.DATA; | |
| 1311 } | |
| 1312 toDt(&sinit.Sdt); | |
| 1313 outdata(sinit); | |
| 1314 | |
| 1315 ////////////////////////////////////////////// | |
| 1316 | |
| 1317 // Put out the TypeInfo | |
| 1318 type.getTypeInfo(null); | |
|
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1319 //type.vtinfo.toObjFile(multiobj); |
| 73 | 1320 |
| 1321 ////////////////////////////////////////////// | |
| 1322 | |
| 1323 // Put out the ClassInfo | |
| 1324 csym.Sclass = scclass; | |
| 1325 csym.Sfl = FLdata; | |
| 1326 | |
| 1327 /* The layout is: | |
| 1328 { | |
| 1329 void **vptr; | |
| 1330 monitor_t monitor; | |
| 1331 byte[] initializer; // static initialization data | |
| 1332 char[] name; // class name | |
| 1333 void *[] vtbl; | |
| 1334 Interface[] interfaces; | |
| 1335 ClassInfo *base; // base class | |
| 1336 void *destructor; | |
| 1337 void *invariant; // class invariant | |
| 1338 uint flags; | |
| 1339 void *deallocator; | |
| 1340 OffsetTypeInfo[] offTi; | |
| 1341 void *defaultConstructor; | |
| 1342 const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function | |
|
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1343 //TypeInfo typeinfo; |
| 73 | 1344 } |
| 1345 */ | |
| 1346 dt_t* dt = null; | |
| 1347 offset = CLASSINFO_SIZE; // must be ClassInfo.size | |
| 1348 if (classinfo) | |
| 1349 { | |
| 1350 if (classinfo.structsize != CLASSINFO_SIZE) | |
| 1351 error("D compiler and phobos' object.d are mismatched"); | |
| 1352 } | |
| 1353 | |
| 1354 if (classinfo) | |
| 1355 dtxoff(&dt, classinfo.toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo | |
| 1356 else | |
| 1357 dtdword(&dt, 0); // BUG: should be an assert() | |
| 1358 | |
| 1359 dtdword(&dt, 0); // monitor | |
| 1360 | |
| 1361 // initializer[] | |
| 1362 assert(structsize >= 8); | |
| 1363 dtdword(&dt, structsize); // size | |
| 1364 dtxoff(&dt, sinit, 0, TYnptr); // initializer | |
| 1365 | |
| 1366 // name[] | |
| 1367 string name = ident.toChars(); | |
| 1368 size_t namelen = name.length; | |
| 1369 if (!(namelen > 9 && name[0..9] == "TypeInfo_")) | |
| 1370 { | |
| 1371 name = toPrettyChars(); | |
| 1372 namelen = name.length; | |
| 1373 } | |
| 1374 dtdword(&dt, namelen); | |
| 1375 dtabytes(&dt, TYnptr, 0, namelen + 1, toStringz(name)); | |
| 1376 | |
| 1377 // vtbl[] | |
| 1378 dtdword(&dt, vtbl.dim); | |
| 1379 dtxoff(&dt, vtblsym, 0, TYnptr); | |
| 1380 | |
| 1381 // interfaces[] | |
| 1382 dtdword(&dt, vtblInterfaces.dim); | |
| 1383 if (vtblInterfaces.dim) | |
| 1384 dtxoff(&dt, csym, offset, TYnptr); // (*) | |
| 1385 else | |
| 1386 dtdword(&dt, 0); | |
| 1387 | |
| 1388 // base | |
| 1389 if (baseClass) | |
| 1390 dtxoff(&dt, baseClass.toSymbol(), 0, TYnptr); | |
| 1391 else | |
| 1392 dtdword(&dt, 0); | |
| 1393 | |
| 1394 // destructor | |
| 1395 if (dtor) | |
| 1396 dtxoff(&dt, dtor.toSymbol(), 0, TYnptr); | |
| 1397 else | |
| 1398 dtdword(&dt, 0); | |
| 1399 | |
| 1400 // invariant | |
| 1401 if (inv) | |
| 1402 dtxoff(&dt, inv.toSymbol(), 0, TYnptr); | |
| 1403 else | |
| 1404 dtdword(&dt, 0); | |
| 1405 | |
| 1406 // flags | |
| 1407 int flags = 4 | isCOMclass(); | |
| 1408 version (DMDV2) { | |
| 1409 flags |= 16; | |
| 1410 } | |
| 1411 flags |= 32; | |
| 1412 | |
| 1413 if (ctor) | |
| 1414 flags |= 8; | |
| 1415 for (ClassDeclaration cd = this; cd; cd = cd.baseClass) | |
| 1416 { | |
| 1417 if (cd.members) | |
| 1418 { | |
|
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1419 foreach (sm; cd.members) |
| 73 | 1420 { |
| 1421 //printf("sm = %s %s\n", sm.kind(), sm.toChars()); | |
| 1422 if (sm.hasPointers()) | |
| 1423 goto L2; | |
| 1424 } | |
| 1425 } | |
| 1426 } | |
| 1427 flags |= 2; // no pointers | |
| 1428 L2: | |
| 1429 dtdword(&dt, flags); | |
| 1430 | |
| 1431 | |
| 1432 // deallocator | |
| 1433 if (aggDelete) | |
| 1434 dtxoff(&dt, aggDelete.toSymbol(), 0, TYnptr); | |
| 1435 else | |
| 1436 dtdword(&dt, 0); | |
| 1437 | |
| 1438 // offTi[] | |
| 1439 dtdword(&dt, 0); | |
| 1440 dtdword(&dt, 0); // null for now, fix later | |
| 1441 | |
| 1442 // defaultConstructor | |
| 1443 if (defaultCtor) | |
| 1444 dtxoff(&dt, defaultCtor.toSymbol(), 0, TYnptr); | |
| 1445 else | |
| 1446 dtdword(&dt, 0); | |
| 1447 | |
| 1448 version (DMDV2) { | |
| 1449 FuncDeclaration sgetmembers = findGetMembers(); | |
| 1450 if (sgetmembers) | |
| 1451 dtxoff(&dt, sgetmembers.toSymbol(), 0, TYnptr); | |
| 1452 else | |
| 1453 dtdword(&dt, 0); // module getMembers() function | |
| 1454 } | |
| 1455 | |
|
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1456 //dtxoff(&dt, type.vtinfo.toSymbol(), 0, TYnptr); // typeinfo |
| 73 | 1457 //dtdword(&dt, 0); |
| 1458 | |
| 1459 ////////////////////////////////////////////// | |
| 1460 | |
| 1461 // Put out vtblInterfaces.data[]. Must immediately follow csym, because | |
| 1462 // of the fixup (*) | |
| 1463 | |
| 1464 offset += vtblInterfaces.dim * (4 * PTRSIZE); | |
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1465 foreach (b; vtblInterfaces) |
| 73 | 1466 { |
| 1467 ClassDeclaration id = b.base; | |
| 1468 | |
| 1469 /* The layout is: | |
|
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1470 * struct Interface |
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1471 * { |
| 73 | 1472 * ClassInfo *interface; |
| 1473 * void *[] vtbl; | |
|
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1474 * ptrdiff_t offset; |
| 73 | 1475 * } |
| 1476 */ | |
| 1477 | |
| 1478 // Fill in vtbl[] | |
| 1479 b.fillVtbl(this, b.vtbl, 1); | |
| 1480 | |
| 1481 dtxoff(&dt, id.toSymbol(), 0, TYnptr); // ClassInfo | |
| 1482 | |
| 1483 // vtbl[] | |
| 1484 dtdword(&dt, id.vtbl.dim); | |
| 1485 dtxoff(&dt, csym, offset, TYnptr); | |
| 1486 | |
| 1487 dtdword(&dt, b.offset); // this offset | |
| 1488 | |
| 1489 offset += id.vtbl.dim * PTRSIZE; | |
| 1490 } | |
| 1491 | |
| 1492 // Put out the vtblInterfaces.data[].vtbl[] | |
| 1493 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1494 //printf("putting out %d interface vtbl[]s for '%s'\n", vtblInterfaces.dim, toChars()); | |
|
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1495 foreach (size_t i, BaseClass b; vtblInterfaces) |
| 73 | 1496 { |
| 1497 ClassDeclaration id = b.base; | |
| 1498 int j; | |
| 1499 | |
| 1500 //printf(" interface[%d] is '%s'\n", i, id.toChars()); | |
| 1501 j = 0; | |
| 1502 if (id.vtblOffset()) | |
| 1503 { | |
| 1504 // First entry is ClassInfo reference | |
| 1505 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1506 | |
| 1507 // First entry is struct Interface reference | |
| 1508 dtxoff(&dt, csym, CLASSINFO_SIZE + i * (4 * PTRSIZE), TYnptr); | |
| 1509 j = 1; | |
| 1510 } | |
| 1511 | |
| 1512 assert(id.vtbl.dim == b.vtbl.dim); | |
| 1513 for (; j < id.vtbl.dim; j++) | |
| 1514 { | |
| 1515 assert(j < b.vtbl.dim); | |
| 1516 static if (false) { | |
| 1517 Object o = cast(Object)b.vtbl.data[j]; | |
| 1518 if (o) | |
| 1519 { | |
| 1520 printf("o = %p\n", o); | |
| 1521 assert(o.dyncast() == DYNCAST_DSYMBOL); | |
| 1522 Dsymbol s = cast(Dsymbol)o; | |
| 1523 printf("s.kind() = '%s'\n", s.kind()); | |
| 1524 } | |
| 1525 } | |
|
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1526 auto fd = cast(FuncDeclaration)b.vtbl.data[j]; |
| 73 | 1527 if (fd) |
| 1528 dtxoff(&dt, fd.toThunkSymbol(b.offset), 0, TYnptr); | |
| 1529 else | |
| 1530 dtdword(&dt, 0); | |
| 1531 } | |
| 1532 } | |
| 1533 | |
| 1534 static if (true) { | |
| 1535 // Put out the overriding interface vtbl[]s. | |
| 1536 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1537 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1538 ClassDeclaration cd; | |
| 1539 scope Array bvtbl = new Array(); | |
| 1540 | |
| 1541 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1542 { | |
|
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1543 foreach (size_t k, BaseClass bs; cd.vtblInterfaces) |
| 73 | 1544 { |
| 1545 if (bs.fillVtbl(this, bvtbl, 0)) | |
| 1546 { | |
| 1547 //printf("\toverriding vtbl[] for %s\n", bs.base.toChars()); | |
| 1548 ClassDeclaration id = bs.base; | |
| 1549 int j; | |
| 1550 | |
| 1551 j = 0; | |
| 1552 if (id.vtblOffset()) | |
| 1553 { | |
| 1554 // First entry is ClassInfo reference | |
| 1555 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1556 | |
| 1557 // First entry is struct Interface reference | |
| 1558 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1559 j = 1; | |
| 1560 } | |
| 1561 | |
| 1562 for (; j < id.vtbl.dim; j++) | |
| 1563 { | |
| 1564 assert(j < bvtbl.dim); | |
| 1565 FuncDeclaration fd = cast(FuncDeclaration)bvtbl.data[j]; | |
| 1566 if (fd) | |
| 1567 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1568 else | |
| 1569 dtdword(&dt, 0); | |
| 1570 } | |
| 1571 } | |
| 1572 } | |
| 1573 } | |
| 1574 } | |
| 1575 | |
| 1576 version (INTERFACE_VIRTUAL) { | |
| 1577 // Put out the overriding interface vtbl[]s. | |
| 1578 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1579 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 89 | 1580 for (size_t i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 1581 { |
| 1582 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1583 ClassDeclaration cd; | |
| 1584 | |
| 1585 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1586 { | |
| 1587 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1588 { | |
| 1589 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1590 | |
| 1591 if (b.base == bs.base) | |
| 1592 { | |
| 1593 //printf("\toverriding vtbl[] for %s\n", b.base.toChars()); | |
| 1594 ClassDeclaration id = b.base; | |
| 1595 int j; | |
| 1596 | |
| 1597 j = 0; | |
| 1598 if (id.vtblOffset()) | |
| 1599 { | |
| 1600 // First entry is ClassInfo reference | |
| 1601 //dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 1602 | |
| 1603 // First entry is struct Interface reference | |
| 1604 dtxoff(&dt, cd.toSymbol(), CLASSINFO_SIZE + k * (4 * PTRSIZE), TYnptr); | |
| 1605 j = 1; | |
| 1606 } | |
| 1607 | |
| 1608 for (; j < id.vtbl.dim; j++) | |
| 1609 { | |
| 1610 assert(j < b.vtbl.dim); | |
| 1611 FuncDeclaration fd = cast(FuncDeclaration)b.vtbl.data[j]; | |
| 1612 if (fd) | |
| 1613 dtxoff(&dt, fd.toThunkSymbol(bs.offset), 0, TYnptr); | |
| 1614 else | |
| 1615 dtdword(&dt, 0); | |
| 1616 } | |
| 1617 } | |
| 1618 } | |
| 1619 } | |
| 1620 } | |
| 1621 } | |
| 1622 | |
| 1623 | |
| 1624 csym.Sdt = dt; | |
| 1625 version (ELFOBJ_OR_MACHOBJ) { // Burton | |
| 1626 // ClassInfo cannot be const data, because we use the monitor on it | |
| 1627 csym.Sseg = Segment.DATA; | |
| 1628 } | |
| 1629 outdata(csym); | |
| 1630 if (isExport()) | |
| 1631 obj_export(csym,0); | |
| 1632 | |
| 1633 ////////////////////////////////////////////// | |
| 1634 | |
| 1635 // Put out the vtbl[] | |
| 1636 //printf("putting out %s.vtbl[]\n", toChars()); | |
| 1637 dt = null; | |
| 89 | 1638 size_t i; |
| 73 | 1639 if (0) |
| 1640 i = 0; | |
| 1641 else | |
| 1642 { | |
| 1643 dtxoff(&dt, csym, 0, TYnptr); // first entry is ClassInfo reference | |
| 1644 i = 1; | |
| 1645 } | |
| 1646 for (; i < vtbl.dim; i++) | |
| 1647 { | |
| 1648 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1649 | |
| 1650 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1651 if (fd && (fd.fbody || !isAbstract())) | |
| 1652 { | |
| 1653 Symbol* s = fd.toSymbol(); | |
| 1654 | |
| 1655 version (DMDV2) { | |
| 1656 if (isFuncHidden(fd)) | |
| 1657 { | |
| 1658 /* fd is hidden from the view of this class. | |
| 1659 * If fd overlaps with any function in the vtbl[], then | |
| 1660 * issue 'hidden' error. | |
| 1661 */ | |
| 1662 for (int j = 1; j < vtbl.dim; j++) | |
| 1663 { | |
| 1664 if (j == i) | |
| 1665 continue; | |
| 1666 FuncDeclaration fd2 = (cast(Dsymbol)vtbl.data[j]).isFuncDeclaration(); | |
| 1667 if (!fd2.ident.equals(fd.ident)) | |
| 1668 continue; | |
| 1669 if (fd.leastAsSpecialized(fd2) || fd2.leastAsSpecialized(fd)) | |
| 1670 { | |
| 1671 if (global.params.warnings) | |
| 1672 { | |
| 1673 TypeFunction tf = cast(TypeFunction)fd.type; | |
| 1674 if (tf.ty == Tfunction) | |
|
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1675 warning("%s%s is hidden by %s\n", fd.toPrettyChars(), Parameter.argsTypesToChars(tf.parameters, tf.varargs), toChars()); |
| 73 | 1676 else |
| 1677 warning("%s is hidden by %s\n", fd.toPrettyChars(), toChars()); | |
| 1678 } | |
| 1679 s = rtlsym[RTLSYM_DHIDDENFUNC]; | |
| 1680 break; | |
| 1681 } | |
| 1682 } | |
| 1683 } | |
| 1684 } | |
| 1685 dtxoff(&dt, s, 0, TYnptr); | |
| 1686 } | |
| 1687 else | |
| 1688 dtdword(&dt, 0); | |
| 1689 } | |
| 1690 | |
| 1691 vtblsym.Sdt = dt; | |
| 1692 vtblsym.Sclass = scclass; | |
| 1693 vtblsym.Sfl = FLdata; | |
| 1694 version (ELFOBJ) { | |
| 1695 vtblsym.Sseg = Segment.CDATA; | |
| 1696 } | |
| 1697 version (MACHOBJ) { | |
| 1698 vtblsym.Sseg = Segment.DATA; | |
| 1699 } | |
| 1700 outdata(vtblsym); | |
| 1701 if (isExport()) | |
| 1702 obj_export(vtblsym,0); | |
| 1703 } | |
| 1704 | |
| 1705 void toDebug() | |
| 1706 { | |
| 1707 assert(false); | |
| 1708 } | |
| 1709 | |
| 1710 /****************************************** | |
| 1711 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 1712 * Returns ~0 if not this csym. | |
| 1713 */ | |
| 1714 uint baseVtblOffset(BaseClass bc) | |
| 1715 { | |
| 1716 uint csymoffset; | |
| 1717 | |
| 1718 //printf("ClassDeclaration.baseVtblOffset('%s', bc = %p)\n", toChars(), bc); | |
| 1719 csymoffset = CLASSINFO_SIZE; | |
| 1720 csymoffset += vtblInterfaces.dim * (4 * PTRSIZE); | |
| 1721 | |
|
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1722 foreach (b; vtblInterfaces) |
| 73 | 1723 { |
| 1724 if (b == bc) | |
| 1725 return csymoffset; | |
| 1726 csymoffset += b.base.vtbl.dim * PTRSIZE; | |
| 1727 } | |
| 1728 | |
| 1729 static if (true) { | |
| 1730 // Put out the overriding interface vtbl[]s. | |
| 1731 // This must be mirrored with ClassDeclaration.baseVtblOffset() | |
| 1732 //printf("putting out overriding interface vtbl[]s for '%s' at offset x%x\n", toChars(), offset); | |
| 1733 ClassDeclaration cd; | |
| 1734 Array bvtbl; | |
| 1735 | |
| 1736 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1737 { | |
|
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1738 foreach(bs; cd.vtblInterfaces) |
| 73 | 1739 { |
| 1740 if (bs.fillVtbl(this, null, 0)) | |
| 1741 { | |
| 1742 if (bc == bs) | |
| 1743 { | |
| 1744 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1745 return csymoffset; | |
| 1746 } | |
| 1747 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1748 } | |
| 1749 } | |
| 1750 } | |
| 1751 } | |
| 1752 version (INTERFACE_VIRTUAL) { | |
| 89 | 1753 for (size_t i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 1754 { |
| 1755 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 1756 ClassDeclaration cd; | |
| 1757 | |
| 1758 for (cd = this.baseClass; cd; cd = cd.baseClass) | |
| 1759 { | |
| 1760 //printf("\tbase class %s\n", cd.toChars()); | |
| 1761 for (int k = 0; k < cd.vtblInterfaces.dim; k++) | |
| 1762 { | |
| 1763 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; | |
| 1764 | |
| 1765 if (bc == bs) | |
| 1766 { | |
| 1767 //printf("\tcsymoffset = x%x\n", csymoffset); | |
| 1768 return csymoffset; | |
| 1769 } | |
| 1770 if (b.base == bs.base) | |
| 1771 csymoffset += bs.base.vtbl.dim * PTRSIZE; | |
| 1772 } | |
| 1773 } | |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 return ~0; | |
| 1778 } | |
| 1779 | |
| 1780 static private __gshared Classsym* scc; | |
| 1781 | |
| 1782 /************************************* | |
| 1783 * Create the "ClassInfo" symbol | |
| 1784 */ | |
| 1785 override Symbol* toSymbol() | |
| 1786 { | |
| 1787 if (!csym) | |
| 1788 { | |
| 1789 Symbol* s; | |
| 1790 | |
| 1791 if (!scc) | |
| 1792 scc = fake_classsym(Id.ClassInfo); | |
| 1793 | |
| 1794 s = toSymbolX("__Class", SC.SCextern, scc.Stype, "Z"); | |
| 1795 s.Sfl = FL.FLextern; | |
| 1796 s.Sflags |= SFL.SFLnodebug; | |
| 1797 csym = s; | |
| 1798 slist_add(s); | |
| 1799 } | |
| 1800 | |
| 1801 return csym; | |
| 1802 } | |
| 1803 | |
| 1804 /************************************* | |
| 1805 * This is accessible via the ClassData, but since it is frequently | |
| 1806 * needed directly (like for rtti comparisons), make it directly accessible. | |
| 1807 */ | |
| 1808 Symbol* toVtblSymbol() | |
| 1809 { | |
| 1810 if (!vtblsym) | |
| 1811 { | |
| 1812 if (!csym) | |
| 1813 toSymbol(); | |
| 1814 | |
| 1815 TYPE* t = type_alloc(TYM.TYnptr | mTY.mTYconst); | |
| 1816 t.Tnext = tsvoid; | |
| 1817 t.Tnext.Tcount++; | |
| 1818 t.Tmangle = mTYman.mTYman_d; | |
| 1819 | |
| 1820 Symbol* s = toSymbolX("__vtbl", SC.SCextern, t, "Z"); | |
| 1821 s.Sflags |= SFL.SFLnodebug; | |
| 1822 s.Sfl = FL.FLextern; | |
| 1823 vtblsym = s; | |
| 1824 slist_add(s); | |
| 1825 } | |
| 1826 return vtblsym; | |
| 1827 } | |
| 1828 | |
| 1829 // Generate the data for the static initializer. | |
| 1830 void toDt(dt_t **pdt) | |
| 1831 { | |
| 1832 //printf("ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1833 | |
| 1834 // Put in first two members, the vtbl[] and the monitor | |
| 1835 dtxoff(pdt, toVtblSymbol(), 0, TYnptr); | |
| 1836 dtdword(pdt, 0); // monitor | |
| 1837 | |
| 1838 // Put in the rest | |
| 1839 toDt2(pdt, this); | |
| 1840 | |
| 1841 //printf("-ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1842 } | |
| 1843 | |
| 1844 void toDt2(dt_t** pdt, ClassDeclaration cd) | |
| 1845 { | |
| 1846 uint offset; | |
| 89 | 1847 |
| 73 | 1848 dt_t* dt; |
| 1849 uint csymoffset; | |
| 1850 | |
| 1851 version (LOG) { | |
| 1852 printf("ClassDeclaration.toDt2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 1853 } | |
| 1854 if (baseClass) | |
| 1855 { | |
| 1856 baseClass.toDt2(pdt, cd); | |
| 1857 offset = baseClass.structsize; | |
| 1858 } | |
| 1859 else | |
| 1860 { | |
| 1861 offset = 8; | |
| 1862 } | |
| 1863 | |
| 1864 // Note equivalence of this loop to struct's | |
| 89 | 1865 for (size_t i = 0; i < fields.dim; i++) |
| 73 | 1866 { |
| 79 | 1867 VarDeclaration v = cast(VarDeclaration)fields[i]; |
| 73 | 1868 Initializer init; |
| 1869 | |
| 1870 //printf("\t\tv = '%s' v.offset = %2d, offset = %2d\n", v.toChars(), v.offset, offset); | |
| 1871 dt = null; | |
| 1872 init = v.init; | |
| 1873 if (init) | |
| 1874 { | |
| 1875 //printf("\t\t%s has initializer %s\n", v.toChars(), init.toChars()); | |
| 1876 ExpInitializer ei = init.isExpInitializer(); | |
| 1877 Type tb = v.type.toBasetype(); | |
| 1878 if (ei && tb.ty == Tsarray) | |
| 1879 (cast(TypeSArray)tb).toDtElem(&dt, ei.exp); | |
| 1880 else | |
| 1881 dt = init.toDt(); | |
| 1882 } | |
| 1883 else if (v.offset >= offset) | |
| 1884 { //printf("\t\tdefault initializer\n"); | |
| 1885 v.type.toDt(&dt); | |
| 1886 } | |
| 1887 if (dt) | |
| 1888 { | |
| 1889 if (v.offset < offset) | |
| 1890 error("duplicated union initialization for %s", v.toChars()); | |
| 1891 else | |
| 1892 { | |
| 1893 if (offset < v.offset) | |
| 1894 dtnzeros(pdt, v.offset - offset); | |
| 1895 dtcat(pdt, dt); | |
| 1896 offset = v.offset + cast(uint)v.type.size(); | |
| 1897 } | |
| 1898 } | |
| 1899 } | |
| 1900 | |
| 1901 // Interface vptr initializations | |
| 1902 toSymbol(); // define csym | |
| 1903 | |
|
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1904 foreach (b; vtblInterfaces) |
| 73 | 1905 { |
| 1906 /// version (1 || INTERFACE_VIRTUAL) { | |
| 1907 for (ClassDeclaration cd2 = cd; 1; cd2 = cd2.baseClass) | |
| 1908 { | |
| 1909 assert(cd2); | |
| 1910 csymoffset = cd2.baseVtblOffset(b); | |
| 1911 if (csymoffset != ~0) | |
| 1912 { | |
| 1913 if (offset < b.offset) | |
| 1914 dtnzeros(pdt, b.offset - offset); | |
| 1915 dtxoff(pdt, cd2.toSymbol(), csymoffset, TYnptr); | |
| 1916 break; | |
| 1917 } | |
| 1918 } | |
| 1919 /// } else { | |
| 1920 /// csymoffset = baseVtblOffset(b); | |
| 1921 /// assert(csymoffset != ~0); | |
| 1922 /// dtxoff(pdt, csym, csymoffset, TYnptr); | |
| 1923 /// } | |
| 1924 offset = b.offset + 4; | |
| 1925 } | |
| 1926 | |
| 1927 if (offset < structsize) | |
| 1928 dtnzeros(pdt, structsize - offset); | |
| 1929 } | |
| 1930 | |
| 1931 Symbol* vtblsym; | |
| 1932 | |
| 1933 ///ClassDeclaration isClassDeclaration() { return cast(ClassDeclaration)this; } /// huh? | |
| 1934 override ClassDeclaration isClassDeclaration() { return this; } | |
| 1935 } |