Mercurial > projects > ddmd
annotate dmd/ClassDeclaration.d @ 176:fa9a71a9f5a8
Moved all the mutable globals to Global
| author | korDen |
|---|---|
| date | Sun, 10 Oct 2010 05:22:45 +0400 |
| parents | af724d3510d7 |
| children | e3afd1303184 |
| 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 | |
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74 struct FuncDeclarationFinder |
| 73 | 75 { |
| 158 | 76 bool visit(FuncDeclaration fd2) |
| 73 | 77 { |
| 78 //printf("param = %p, fd = %p %s\n", param, fd, fd.toChars()); | |
| 79 return fd is fd2; | |
| 80 } | |
| 176 | 81 |
| 73 | 82 FuncDeclaration fd; |
| 83 } | |
| 84 | |
| 85 class ClassDeclaration : AggregateDeclaration | |
| 86 { | |
| 87 ClassDeclaration baseClass; // null only if this is Object | |
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88 version(DMDV1) { |
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89 CtorDeclaration *ctor; |
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90 CtorDeclaration *defaultCtor; // default constructor |
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91 } |
| 73 | 92 FuncDeclaration staticCtor; |
| 93 FuncDeclaration staticDtor; | |
| 94 Array vtbl; // Array of FuncDeclaration's making up the vtbl[] | |
| 95 Array vtblFinal; // More FuncDeclaration's that aren't in vtbl[] | |
| 96 | |
| 97 BaseClasses baseclasses; // Array of BaseClass's; first is super, | |
| 98 // rest are Interface's | |
| 99 | |
| 100 int interfaces_dim; | |
| 101 BaseClass* interfaces; // interfaces[interfaces_dim] for this class | |
| 102 // (does not include baseClass) | |
| 103 | |
| 104 BaseClasses vtblInterfaces; // array of base interfaces that have | |
| 105 // their own vtbl[] | |
| 106 | |
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107 TypeInfoClassDeclaration vclassinfo; // the ClassInfo object for this ClassDeclaration |
| 73 | 108 bool com; // true if this is a COM class (meaning |
| 109 // it derives from IUnknown) | |
| 110 bool isauto; // true if this is an auto class | |
| 111 bool isabstract; // true if abstract class | |
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112 version(DMDV1) { |
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113 int isnested; // !=0 if is nested |
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114 } |
| 73 | 115 int inuse; // to prevent recursive attempts |
| 116 | |
| 117 this(Loc loc, Identifier id, BaseClasses baseclasses) | |
| 118 { | |
| 119 super(loc, id); | |
| 176 | 120 |
| 73 | 121 vtbl = new Array(); |
| 122 vtblFinal = new Array(); | |
| 176 | 123 |
| 73 | 124 enum msg = "only object.d can define this reserved class name"; |
| 125 | |
| 126 if (baseclasses) { | |
| 127 this.baseclasses = baseclasses; | |
| 128 } else { | |
| 129 this.baseclasses = new BaseClasses(); | |
| 130 } | |
| 131 | |
| 132 //printf("ClassDeclaration(%s), dim = %d\n", id.toChars(), this.baseclasses.dim); | |
| 133 | |
| 134 // For forward references | |
| 135 type = new TypeClass(this); | |
| 136 | |
| 137 if (id) | |
| 138 { | |
| 139 // Look for special class names | |
| 140 | |
| 141 if (id is Id.__sizeof || id is Id.alignof_ || id is Id.mangleof_) | |
| 142 error("illegal class name"); | |
| 143 | |
| 144 // BUG: What if this is the wrong TypeInfo, i.e. it is nested? | |
| 145 if (id.toChars()[0] == 'T') | |
| 146 { | |
| 147 if (id is Id.TypeInfo) | |
| 176 | 148 { |
| 174 | 149 if (global.typeinfo) { |
| 150 global.typeinfo.error("%s", msg); | |
| 151 } | |
| 176 | 152 |
| 174 | 153 global.typeinfo = this; |
| 73 | 154 } |
| 155 | |
| 156 if (id is Id.TypeInfo_Class) | |
| 176 | 157 { |
| 174 | 158 if (global.typeinfoclass) |
| 159 global.typeinfoclass.error("%s", msg); | |
| 160 global.typeinfoclass = this; | |
| 73 | 161 } |
| 162 | |
| 163 if (id is Id.TypeInfo_Interface) | |
| 176 | 164 { |
| 174 | 165 if (global.typeinfointerface) |
| 166 global.typeinfointerface.error("%s", msg); | |
| 167 global.typeinfointerface = this; | |
| 73 | 168 } |
| 169 | |
| 170 if (id is Id.TypeInfo_Struct) | |
| 176 | 171 { |
| 174 | 172 if (global.typeinfostruct) |
| 173 global.typeinfostruct.error("%s", msg); | |
| 174 global.typeinfostruct = this; | |
| 73 | 175 } |
| 176 | |
| 177 if (id is Id.TypeInfo_Typedef) | |
| 176 | 178 { |
| 174 | 179 if (global.typeinfotypedef) |
| 180 global.typeinfotypedef.error("%s", msg); | |
| 181 global.typeinfotypedef = this; | |
| 73 | 182 } |
| 183 | |
| 184 if (id is Id.TypeInfo_Pointer) | |
| 176 | 185 { |
| 174 | 186 if (global.typeinfopointer) |
| 187 global.typeinfopointer.error("%s", msg); | |
| 188 global.typeinfopointer = this; | |
| 73 | 189 } |
| 190 | |
| 191 if (id is Id.TypeInfo_Array) | |
| 176 | 192 { |
| 174 | 193 if (global.typeinfoarray) |
| 194 global.typeinfoarray.error("%s", msg); | |
| 195 global.typeinfoarray = this; | |
| 73 | 196 } |
| 197 | |
| 198 if (id is Id.TypeInfo_StaticArray) | |
| 174 | 199 { //if (global.typeinfostaticarray) |
| 200 //global.typeinfostaticarray.error("%s", msg); | |
| 201 global.typeinfostaticarray = this; | |
| 73 | 202 } |
| 203 | |
| 204 if (id is Id.TypeInfo_AssociativeArray) | |
| 176 | 205 { |
| 174 | 206 if (global.typeinfoassociativearray) |
| 207 global.typeinfoassociativearray.error("%s", msg); | |
| 208 global.typeinfoassociativearray = this; | |
| 73 | 209 } |
| 210 | |
| 211 if (id is Id.TypeInfo_Enum) | |
| 176 | 212 { |
| 174 | 213 if (global.typeinfoenum) |
| 214 global.typeinfoenum.error("%s", msg); | |
| 215 global.typeinfoenum = this; | |
| 73 | 216 } |
| 217 | |
| 218 if (id is Id.TypeInfo_Function) | |
| 176 | 219 { |
| 174 | 220 if (global.typeinfofunction) |
| 221 global.typeinfofunction.error("%s", msg); | |
| 222 global.typeinfofunction = this; | |
| 73 | 223 } |
| 224 | |
| 225 if (id is Id.TypeInfo_Delegate) | |
| 176 | 226 { |
| 174 | 227 if (global.typeinfodelegate) |
| 228 global.typeinfodelegate.error("%s", msg); | |
| 229 global.typeinfodelegate = this; | |
| 73 | 230 } |
| 231 | |
| 232 if (id is Id.TypeInfo_Tuple) | |
| 176 | 233 { |
| 174 | 234 if (global.typeinfotypelist) |
| 235 global.typeinfotypelist.error("%s", msg); | |
| 236 global.typeinfotypelist = this; | |
| 73 | 237 } |
| 238 | |
| 239 version (DMDV2) { | |
| 240 if (id is Id.TypeInfo_Const) | |
| 176 | 241 { |
| 174 | 242 if (global.typeinfoconst) |
| 243 global.typeinfoconst.error("%s", msg); | |
| 244 global.typeinfoconst = this; | |
| 73 | 245 } |
| 246 | |
| 247 if (id is Id.TypeInfo_Invariant) | |
| 176 | 248 { |
| 174 | 249 if (global.typeinfoinvariant) |
| 250 global.typeinfoinvariant.error("%s", msg); | |
| 251 global.typeinfoinvariant = this; | |
| 73 | 252 } |
| 253 | |
| 254 if (id is Id.TypeInfo_Shared) | |
| 176 | 255 { |
| 174 | 256 if (global.typeinfoshared) |
| 257 global.typeinfoshared.error("%s", msg); | |
| 258 global.typeinfoshared = this; | |
| 73 | 259 } |
| 135 | 260 |
| 261 if (id == Id.TypeInfo_Wild) | |
| 262 { | |
| 174 | 263 if (global.typeinfowild) |
| 264 global.typeinfowild.error("%s", msg); | |
| 265 global.typeinfowild = this; | |
| 135 | 266 } |
| 73 | 267 } |
| 268 } | |
| 269 | |
| 270 if (id is Id.Object_) | |
| 176 | 271 { |
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272 if (global.object) |
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273 global.object.error("%s", msg); |
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274 global.object = this; |
| 73 | 275 } |
| 276 | |
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277 // if (id is Id.ClassInfo) |
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278 if (id is Id.TypeInfo_Class) |
| 176 | 279 { |
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280 if (global.classinfo) |
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281 global.classinfo.error("%s", msg); |
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282 global.classinfo = this; |
| 73 | 283 } |
| 284 | |
| 285 if (id is Id.ModuleInfo) | |
| 176 | 286 { |
| 169 | 287 if (global.moduleinfo) |
| 288 global.moduleinfo.error("%s", msg); | |
| 289 global.moduleinfo = this; | |
| 73 | 290 } |
| 291 } | |
| 292 | |
| 293 com = 0; | |
| 294 isauto = false; | |
| 295 isabstract = false; | |
| 296 inuse = 0; | |
| 297 } | |
| 176 | 298 |
| 73 | 299 override Dsymbol syntaxCopy(Dsymbol s) |
| 300 { | |
| 301 ClassDeclaration cd; | |
| 302 | |
| 303 //printf("ClassDeclaration.syntaxCopy('%s')\n", toChars()); | |
| 304 if (s) | |
| 305 cd = cast(ClassDeclaration)s; | |
| 306 else | |
| 307 cd = new ClassDeclaration(loc, ident, null); | |
| 308 | |
| 309 cd.storage_class |= storage_class; | |
| 310 | |
| 311 cd.baseclasses.setDim(this.baseclasses.dim); | |
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312 for (size_t i = 0; i < cd.baseclasses.dim; i++) |
| 73 | 313 { |
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314 auto b = this.baseclasses[i]; |
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315 auto b2 = new BaseClass(b.type.syntaxCopy(), b.protection); |
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316 cd.baseclasses[i] = b2; |
| 73 | 317 } |
| 318 | |
| 319 ScopeDsymbol.syntaxCopy(cd); | |
| 320 return cd; | |
| 321 } | |
| 176 | 322 |
| 73 | 323 override void semantic(Scope sc) |
| 324 { | |
| 325 uint offset; | |
| 326 | |
| 327 //printf("ClassDeclaration.semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this); | |
| 328 //printf("\tparent = %p, '%s'\n", sc.parent, sc.parent ? sc.parent.toChars() : ""); | |
| 329 //printf("sc.stc = %x\n", sc.stc); | |
| 330 | |
| 331 //{ static int n; if (++n == 20) *(char*)0=0; } | |
| 332 | |
| 333 if (!ident) // if anonymous class | |
| 176 | 334 { |
| 73 | 335 string id = "__anonclass"; |
| 336 ident = Identifier.generateId(id); | |
| 337 } | |
| 338 | |
| 339 if (!sc) | |
| 340 sc = scope_; | |
| 341 | |
| 342 if (!parent && sc.parent && !sc.parent.isModule()) | |
| 343 parent = sc.parent; | |
| 344 | |
| 345 type = type.semantic(loc, sc); | |
| 346 handle = type; | |
| 347 | |
| 348 if (!members) // if forward reference | |
| 176 | 349 { |
| 73 | 350 //printf("\tclass '%s' is forward referenced\n", toChars()); |
| 351 return; | |
| 352 } | |
| 353 if (symtab) | |
| 138 | 354 { if (sizeok == 1 || !scope_) |
| 73 | 355 { //printf("\tsemantic for '%s' is already completed\n", toChars()); |
| 356 return; // semantic() already completed | |
| 357 } | |
| 358 } | |
| 359 else | |
| 360 symtab = new DsymbolTable(); | |
| 361 | |
| 362 Scope scx = null; | |
| 363 if (scope_) | |
| 364 { sc = scope_; | |
| 365 scx = scope_; // save so we don't make redundant copies | |
| 366 scope_ = null; | |
| 367 } | |
| 368 version (IN_GCC) { | |
| 369 methods.setDim(0); | |
| 370 } | |
| 371 | |
| 372 if (sc.stc & STC.STCdeprecated) | |
| 373 { | |
| 374 isdeprecated = 1; | |
| 375 } | |
| 376 | |
| 377 if (sc.linkage == LINK.LINKcpp) | |
| 378 error("cannot create C++ classes"); | |
| 379 | |
| 380 // Expand any tuples in baseclasses[] | |
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381 for (size_t i = 0; i < baseclasses.dim; ) |
| 176 | 382 { |
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383 auto b = baseclasses[i]; |
| 73 | 384 //printf("test1 %s %s\n", toChars(), b.type.toChars()); |
| 385 b.type = b.type.semantic(loc, sc); | |
| 386 //printf("test2\n"); | |
| 387 Type tb = b.type.toBasetype(); | |
| 388 | |
| 389 if (tb.ty == TY.Ttuple) | |
| 176 | 390 { |
| 73 | 391 TypeTuple tup = cast(TypeTuple)tb; |
| 392 enum PROT protection = b.protection; | |
| 393 baseclasses.remove(i); | |
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394 size_t dim = Parameter.dim(tup.arguments); |
| 73 | 395 for (size_t j = 0; j < dim; j++) |
| 176 | 396 { |
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397 auto arg = Parameter.getNth(tup.arguments, j); |
| 73 | 398 b = new BaseClass(arg.type, protection); |
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399 baseclasses.insert(i + j, b); |
| 73 | 400 } |
| 401 } | |
| 402 else | |
| 403 i++; | |
| 404 } | |
| 405 | |
| 406 // See if there's a base class as first in baseclasses[] | |
| 407 if (baseclasses.dim) | |
| 176 | 408 { |
| 73 | 409 TypeClass tc; |
| 410 BaseClass b; | |
| 411 Type tb; | |
| 412 | |
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413 b = baseclasses[0]; |
| 73 | 414 //b.type = b.type.semantic(loc, sc); |
| 415 tb = b.type.toBasetype(); | |
| 416 if (tb.ty != TY.Tclass) | |
| 417 { error("base type must be class or interface, not %s", b.type.toChars()); | |
| 418 baseclasses.remove(0); | |
| 419 } | |
| 420 else | |
| 421 { | |
| 422 tc = cast(TypeClass)(tb); | |
| 423 | |
| 424 if (tc.sym.isDeprecated()) | |
| 425 { | |
| 426 if (!isDeprecated()) | |
| 427 { | |
| 428 // Deriving from deprecated class makes this one deprecated too | |
| 429 isdeprecated = 1; | |
| 430 | |
| 431 tc.checkDeprecated(loc, sc); | |
| 432 } | |
| 433 } | |
| 434 | |
| 435 if (tc.sym.isInterfaceDeclaration()) { | |
| 436 ; | |
| 437 } else { | |
| 438 for (ClassDeclaration cdb = tc.sym; cdb; cdb = cdb.baseClass) | |
| 439 { | |
| 440 if (cdb == this) | |
| 441 { | |
| 442 error("circular inheritance"); | |
| 443 baseclasses.remove(0); | |
| 444 goto L7; | |
| 445 } | |
| 446 } | |
| 447 if (!tc.sym.symtab || tc.sym.sizeok == 0) | |
| 448 { // Try to resolve forward reference | |
| 449 if (sc.mustsemantic && tc.sym.scope_) | |
| 450 tc.sym.semantic(null); | |
| 451 } | |
| 452 if (!tc.sym.symtab || tc.sym.scope_ || tc.sym.sizeok == 0) | |
| 453 { | |
| 454 //printf("%s: forward reference of base class %s\n", toChars(), tc.sym.toChars()); | |
| 455 //error("forward reference of base class %s", baseClass.toChars()); | |
| 456 // Forward reference of base class, try again later | |
| 457 //printf("\ttry later, forward reference of base class %s\n", tc.sym.toChars()); | |
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458 scope_ = scx ? scx : sc.clone(); |
| 73 | 459 scope_.setNoFree(); |
| 460 if (tc.sym.scope_) | |
| 461 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 462 scope_.module_.addDeferredSemantic(this); | |
| 463 return; | |
| 464 } | |
| 465 else | |
| 466 { baseClass = tc.sym; | |
| 467 b.base = baseClass; | |
| 468 } | |
| 469 L7: ; | |
| 470 } | |
| 471 } | |
| 472 } | |
| 473 | |
| 474 // Treat the remaining entries in baseclasses as interfaces | |
| 475 // Check for errors, handle forward references | |
| 89 | 476 for (int i = (baseClass ? 1 : 0); i < baseclasses.dim; ) |
| 73 | 477 { TypeClass tc; |
| 478 BaseClass b; | |
| 479 Type tb; | |
| 480 | |
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|
481 b = baseclasses[i]; |
| 73 | 482 b.type = b.type.semantic(loc, sc); |
| 483 tb = b.type.toBasetype(); | |
| 484 if (tb.ty == TY.Tclass) | |
| 485 tc = cast(TypeClass)tb; | |
| 486 else | |
| 487 tc = null; | |
| 488 if (!tc || !tc.sym.isInterfaceDeclaration()) | |
| 489 { | |
| 490 error("base type must be interface, not %s", b.type.toChars()); | |
| 491 baseclasses.remove(i); | |
| 492 continue; | |
| 493 } | |
| 494 else | |
| 495 { | |
| 496 if (tc.sym.isDeprecated()) | |
| 497 { | |
| 498 if (!isDeprecated()) | |
| 499 { | |
| 500 // Deriving from deprecated class makes this one deprecated too | |
| 501 isdeprecated = 1; | |
| 502 | |
| 503 tc.checkDeprecated(loc, sc); | |
| 504 } | |
| 505 } | |
| 506 | |
| 507 // Check for duplicate interfaces | |
| 508 for (size_t j = (baseClass ? 1 : 0); j < i; j++) | |
| 509 { | |
|
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510 auto b2 = baseclasses[j]; |
| 73 | 511 if (b2.base == tc.sym) |
| 512 error("inherits from duplicate interface %s", b2.base.toChars()); | |
| 513 } | |
| 514 | |
| 515 if (!tc.sym.symtab) | |
| 516 { // Try to resolve forward reference | |
| 517 if (sc.mustsemantic && tc.sym.scope_) | |
| 518 tc.sym.semantic(null); | |
| 519 } | |
| 520 | |
| 521 b.base = tc.sym; | |
| 522 if (!b.base.symtab || b.base.scope_) | |
| 523 { | |
| 524 //error("forward reference of base class %s", baseClass.toChars()); | |
| 525 // Forward reference of base, try again later | |
| 526 //printf("\ttry later, forward reference of base %s\n", baseClass.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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527 scope_ = scx ? scx : sc.clone(); |
| 73 | 528 scope_.setNoFree(); |
| 529 if (tc.sym.scope_) | |
| 530 tc.sym.scope_.module_.addDeferredSemantic(tc.sym); | |
| 531 scope_.module_.addDeferredSemantic(this); | |
| 532 return; | |
| 533 } | |
| 534 } | |
| 535 i++; | |
| 536 } | |
| 537 | |
| 538 | |
| 539 // If no base class, and this is not an Object, use Object as base class | |
| 540 if (!baseClass && ident !is Id.Object_) | |
| 541 { | |
| 542 // BUG: what if Object is redefined in an inner scope? | |
| 543 Type tbase = new TypeIdentifier(Loc(0), Id.Object_); | |
| 544 BaseClass b; | |
| 545 TypeClass tc; | |
| 546 Type bt; | |
| 547 | |
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Moved object and classinfo from ClassDeclaration to Global (as part of getting rid of the global state)
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548 if (!global.object) |
| 73 | 549 { |
| 550 error("missing or corrupt object.d"); | |
| 551 fatal(); | |
| 552 } | |
| 553 bt = tbase.semantic(loc, sc).toBasetype(); | |
| 554 b = new BaseClass(bt, PROT.PROTpublic); | |
|
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555 baseclasses.shift(b); |
| 73 | 556 assert(b.type.ty == TY.Tclass); |
| 557 tc = cast(TypeClass)(b.type); | |
| 558 baseClass = tc.sym; | |
| 559 assert(!baseClass.isInterfaceDeclaration()); | |
| 560 b.base = baseClass; | |
| 561 } | |
| 562 | |
| 563 interfaces_dim = baseclasses.dim; | |
|
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564 interfaces = baseclasses.ptr; |
| 73 | 565 |
| 566 if (baseClass) | |
| 567 { | |
| 568 if (baseClass.storage_class & STC.STCfinal) | |
| 569 error("cannot inherit from final class %s", baseClass.toChars()); | |
| 570 | |
| 571 interfaces_dim--; | |
| 572 interfaces++; | |
| 573 | |
| 574 // Copy vtbl[] from base class | |
| 575 vtbl.setDim(baseClass.vtbl.dim); | |
| 576 memcpy(vtbl.data, baseClass.vtbl.data, (void*).sizeof * vtbl.dim); | |
| 577 | |
| 578 // Inherit properties from base class | |
| 579 com = baseClass.isCOMclass(); | |
| 580 isauto = baseClass.isauto; | |
| 581 vthis = baseClass.vthis; | |
| 582 storage_class |= baseClass.storage_class & STC.STC_TYPECTOR; | |
| 583 } | |
| 584 else | |
| 585 { | |
| 586 // No base class, so this is the root of the class hierarchy | |
| 587 vtbl.setDim(0); | |
| 588 vtbl.push(cast(void*)this); // leave room for classinfo as first member | |
| 589 } | |
| 590 | |
| 591 protection = sc.protection; | |
| 592 storage_class |= sc.stc; | |
| 593 | |
| 594 if (sizeok == 0) | |
| 595 { | |
| 596 interfaceSemantic(sc); | |
| 597 | |
|
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changeset
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598 foreach (s; members) |
| 73 | 599 s.addMember(sc, this, true); |
| 600 | |
| 601 /* If this is a nested class, add the hidden 'this' | |
| 602 * member which is a pointer to the enclosing scope. | |
| 603 */ | |
| 604 if (vthis) // if inheriting from nested class | |
| 605 { // Use the base class's 'this' member | |
| 606 isnested = true; | |
| 607 if (storage_class & STC.STCstatic) | |
| 608 error("static class cannot inherit from nested class %s", baseClass.toChars()); | |
| 609 if (toParent2() != baseClass.toParent2()) | |
| 610 { | |
| 611 if (toParent2()) | |
| 612 { | |
| 613 error("is nested within %s, but super class %s is nested within %s", | |
| 614 toParent2().toChars(), | |
| 615 baseClass.toChars(), | |
| 616 baseClass.toParent2().toChars()); | |
| 617 } | |
| 618 else | |
| 619 { | |
| 620 error("is not nested, but super class %s is nested within %s", | |
| 621 baseClass.toChars(), | |
| 622 baseClass.toParent2().toChars()); | |
| 623 } | |
| 624 isnested = false; | |
| 625 } | |
| 626 } | |
| 627 else if (!(storage_class & STC.STCstatic)) | |
| 176 | 628 { |
| 73 | 629 Dsymbol s = toParent2(); |
| 630 if (s) | |
| 631 { | |
| 632 AggregateDeclaration ad = s.isClassDeclaration(); | |
| 633 FuncDeclaration fd = s.isFuncDeclaration(); | |
| 634 | |
| 635 if (ad || fd) | |
| 636 { isnested = true; | |
| 637 Type t; | |
| 638 if (ad) | |
| 639 t = ad.handle; | |
| 640 else if (fd) | |
| 176 | 641 { |
| 73 | 642 AggregateDeclaration ad2 = fd.isMember2(); |
| 643 if (ad2) | |
| 644 t = ad2.handle; | |
| 645 else | |
| 646 { | |
| 176 | 647 t = global.tvoidptr; |
| 73 | 648 } |
| 649 } | |
| 650 else | |
| 651 assert(0); | |
| 652 if (t.ty == TY.Tstruct) // ref to struct | |
| 176 | 653 t = global.tvoidptr; |
| 73 | 654 assert(!vthis); |
| 655 vthis = new ThisDeclaration(loc, t); | |
|
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656 members.push(vthis); |
| 73 | 657 } |
| 658 } | |
| 659 } | |
| 660 } | |
| 661 | |
| 662 if (storage_class & (STC.STCauto | STC.STCscope)) | |
| 663 isauto = true; | |
| 664 if (storage_class & STC.STCabstract) | |
| 665 isabstract = true; | |
| 666 if (storage_class & STC.STCimmutable) | |
| 667 type = type.invariantOf(); | |
| 668 else if (storage_class & STC.STCconst) | |
| 669 type = type.constOf(); | |
| 670 else if (storage_class & STC.STCshared) | |
| 671 type = type.sharedOf(); | |
| 672 | |
| 673 sc = sc.push(this); | |
| 674 sc.stc &= ~(STC.STCfinal | STC.STCauto | STC.STCscope | STC.STCstatic | | |
| 675 STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCtls | STC.STCgshared); | |
| 676 sc.stc |= storage_class & STC.STC_TYPECTOR; | |
| 677 sc.parent = this; | |
| 678 sc.inunion = 0; | |
| 679 | |
| 680 if (isCOMclass()) | |
| 681 { | |
| 114 | 682 version (Windows) { |
| 73 | 683 sc.linkage = LINK.LINKwindows; |
| 684 } else { | |
| 685 /* This enables us to use COM objects under Linux and | |
| 686 * work with things like XPCOM | |
| 687 */ | |
| 688 sc.linkage = LINK.LINKc; | |
| 689 } | |
| 690 } | |
| 691 sc.protection = PROT.PROTpublic; | |
| 692 sc.explicitProtection = 0; | |
| 693 sc.structalign = 8; | |
| 694 structalign = sc.structalign; | |
| 695 if (baseClass) | |
| 696 { sc.offset = baseClass.structsize; | |
| 697 alignsize = baseClass.alignsize; | |
| 698 // if (isnested) | |
| 699 // sc.offset += PTRSIZE; // room for uplevel context pointer | |
| 700 } | |
| 701 else | |
| 702 { sc.offset = PTRSIZE * 2; // allow room for __vptr and __monitor | |
| 703 alignsize = PTRSIZE; | |
| 704 } | |
| 705 structsize = sc.offset; | |
| 92 | 706 Scope scsave = sc.clone(); |
| 73 | 707 sizeok = 0; |
| 135 | 708 |
| 709 /* Set scope so if there are forward references, we still might be able to | |
| 710 * resolve individual members like enums. | |
| 711 */ | |
| 712 foreach (s; members) | |
| 713 { | |
| 714 /* There are problems doing this in the general case because | |
| 715 * Scope keeps track of things like 'offset' | |
| 716 */ | |
| 717 if (s.isEnumDeclaration() || (s.isAggregateDeclaration() && s.ident)) | |
| 718 { | |
| 719 //printf("setScope %s %s\n", s->kind(), s->toChars()); | |
| 720 s.setScope(sc); | |
| 721 } | |
| 722 } | |
| 176 | 723 |
| 89 | 724 foreach (Dsymbol s; members) { |
| 73 | 725 s.semantic(sc); |
| 89 | 726 } |
| 73 | 727 |
| 728 if (sizeok == 2) | |
| 729 { // semantic() failed because of forward references. | |
| 730 // Unwind what we did, and defer it for later | |
| 731 fields.setDim(0); | |
| 732 structsize = 0; | |
| 733 alignsize = 0; | |
| 734 structalign = 0; | |
| 735 | |
| 736 sc = sc.pop(); | |
| 737 | |
|
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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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parents:
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diff
changeset
|
738 scope_ = scx ? scx : sc.clone(); |
| 73 | 739 scope_.setNoFree(); |
| 740 scope_.module_.addDeferredSemantic(this); | |
| 741 | |
| 742 //printf("\tsemantic('%s') failed due to forward references\n", toChars()); | |
| 743 return; | |
| 744 } | |
| 745 | |
| 746 //printf("\tsemantic('%s') successful\n", toChars()); | |
| 747 | |
| 748 structsize = sc.offset; | |
| 749 //members.print(); | |
| 750 | |
| 751 /* Look for special member functions. | |
| 752 * They must be in this class, not in a base class. | |
| 753 */ | |
| 754 ctor = cast(CtorDeclaration)search(Loc(0), Id.ctor, 0); | |
| 755 if (ctor && (ctor.toParent() != this || !ctor.isCtorDeclaration())) | |
| 756 ctor = null; | |
| 757 | |
| 758 // dtor = (DtorDeclaration *)search(Id.dtor, 0); | |
| 759 // if (dtor && dtor.toParent() != this) | |
| 760 // dtor = null; | |
| 761 | |
| 762 // inv = (InvariantDeclaration *)search(Id.classInvariant, 0); | |
| 763 // if (inv && inv.toParent() != this) | |
| 764 // inv = null; | |
| 765 | |
| 766 // Can be in base class | |
| 767 aggNew = cast(NewDeclaration)search(Loc(0), Id.classNew, 0); | |
| 768 aggDelete = cast(DeleteDeclaration)search(Loc(0), Id.classDelete, 0); | |
| 769 | |
| 770 // If this class has no constructor, but base class does, create | |
| 771 // a constructor: | |
| 772 // this() { } | |
| 773 if (!ctor && baseClass && baseClass.ctor) | |
| 774 { | |
| 775 //printf("Creating default this(){} for class %s\n", toChars()); | |
| 776 CtorDeclaration ctor = new CtorDeclaration(loc, Loc(0), null, 0); | |
| 777 ctor.fbody = new CompoundStatement(Loc(0), new Statements()); | |
|
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changeset
|
778 members.push(ctor); |
| 73 | 779 ctor.addMember(sc, this, true); |
| 780 sc = scsave; // why? What about sc.nofree? /// | |
| 781 sc.offset = structsize; | |
| 782 ctor.semantic(sc); | |
| 783 this.ctor = ctor; | |
| 784 defaultCtor = ctor; | |
| 785 } | |
| 786 | |
| 787 static if (false) { | |
| 788 if (baseClass) | |
| 789 { if (!aggDelete) | |
| 790 aggDelete = baseClass.aggDelete; | |
| 791 if (!aggNew) | |
| 792 aggNew = baseClass.aggNew; | |
| 793 } | |
| 794 } | |
| 795 | |
| 796 // Allocate instance of each new interface | |
|
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changeset
|
797 foreach (b; vtblInterfaces) |
| 73 | 798 { |
| 799 uint thissize = PTRSIZE; | |
| 800 | |
| 801 alignmember(structalign, thissize, &sc.offset); | |
| 802 assert(b.offset == 0); | |
| 803 b.offset = sc.offset; | |
| 804 | |
| 805 // Take care of single inheritance offsets | |
| 806 while (b.baseInterfaces.length) | |
| 807 { | |
| 808 b = b.baseInterfaces[0]; | |
| 809 b.offset = sc.offset; | |
| 810 } | |
| 811 | |
| 812 sc.offset += thissize; | |
| 813 if (alignsize < thissize) | |
| 814 alignsize = thissize; | |
| 815 } | |
| 816 structsize = sc.offset; | |
| 817 sizeok = 1; | |
| 169 | 818 global.dprogress++; |
| 73 | 819 |
| 820 dtor = buildDtor(sc); | |
| 821 | |
| 822 sc.pop(); | |
| 823 | |
| 824 static if (false) { // Do not call until toObjfile() because of forward references | |
| 825 // Fill in base class vtbl[]s | |
| 89 | 826 for (int i = 0; i < vtblInterfaces.dim; i++) |
| 73 | 827 { |
| 828 BaseClass b = cast(BaseClass)vtblInterfaces.data[i]; | |
| 829 | |
| 830 //b.fillVtbl(this, &b.vtbl, 1); | |
| 831 } | |
| 832 } | |
| 833 //printf("-ClassDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 834 } | |
| 176 | 835 |
| 73 | 836 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 837 { | |
| 838 if (!isAnonymous()) | |
| 839 { | |
| 840 buf.printf("%s ", kind()); | |
| 841 buf.writestring(toChars()); | |
| 842 if (baseclasses.dim) | |
| 843 buf.writestring(" : "); | |
| 844 } | |
|
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parents:
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diff
changeset
|
845 foreach (size_t i, BaseClass b; baseclasses) |
| 73 | 846 { |
| 847 if (i) | |
| 848 buf.writeByte(','); | |
| 849 //buf.writestring(b.base.ident.toChars()); | |
| 850 b.type.toCBuffer(buf, null, hgs); | |
| 851 } | |
| 852 if (members) | |
| 853 { | |
| 854 buf.writenl(); | |
| 855 buf.writeByte('{'); | |
| 856 buf.writenl(); | |
|
84
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
79
diff
changeset
|
857 foreach (s; members) |
| 73 | 858 { |
| 859 buf.writestring(" "); | |
| 860 s.toCBuffer(buf, hgs); | |
| 861 } | |
| 862 buf.writestring("}"); | |
| 863 } | |
| 864 else | |
| 865 buf.writeByte(';'); | |
| 866 buf.writenl(); | |
| 867 } | |
| 176 | 868 |
| 73 | 869 /********************************************* |
| 870 * Determine if 'this' is a base class of cd. | |
| 871 * This is used to detect circular inheritance only. | |
| 872 */ | |
| 873 int isBaseOf2(ClassDeclaration cd) | |
| 874 { | |
| 875 if (!cd) | |
| 876 return 0; | |
| 877 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
|
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BaseClasses -> Vector
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diff
changeset
|
878 foreach (b; cd.baseclasses) |
| 176 | 879 { |
| 73 | 880 if (b.base is this || isBaseOf2(b.base)) |
| 881 return 1; | |
| 882 } | |
| 883 return 0; | |
| 884 } | |
| 885 | |
| 886 /******************************************* | |
| 887 * Determine if 'this' is a base class of cd. | |
| 888 */ | |
| 889 /// #define OFFSET_RUNTIME 0x76543210 | |
| 890 bool isBaseOf(ClassDeclaration cd, int* poffset) | |
| 891 { | |
| 892 if (!cd) | |
| 893 return 0; | |
| 894 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
|
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changeset
|
895 foreach (b; cd.baseclasses) |
| 176 | 896 { |
| 73 | 897 if (b.base == this || isBaseOf2(b.base)) |
| 898 return 1; | |
| 899 } | |
| 900 | |
| 901 return 0; | |
| 902 } | |
| 903 | |
| 904 override Dsymbol search(Loc, Identifier ident, int flags) | |
| 905 { | |
| 906 Dsymbol s; | |
| 907 //printf("%s.ClassDeclaration.search('%s')\n", toChars(), ident.toChars()); | |
| 908 | |
| 909 if (scope_) | |
| 910 { | |
| 911 Scope sc = scope_; | |
| 912 sc.mustsemantic++; | |
| 913 semantic(sc); | |
| 914 sc.mustsemantic--; | |
| 915 } | |
| 916 | |
| 917 if (!members || !symtab || scope_) | |
| 918 { | |
| 919 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 920 //*(char*)0=0; | |
| 921 return null; | |
| 922 } | |
| 923 | |
| 924 s = ScopeDsymbol.search(loc, ident, flags); | |
| 925 if (!s) | |
| 926 { | |
| 927 // Search bases classes in depth-first, left to right order | |
| 928 | |
| 929 int i; | |
| 930 | |
|
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changeset
|
931 foreach (b; baseclasses) |
| 73 | 932 { |
| 933 if (b.base) | |
| 934 { | |
| 935 if (!b.base.symtab) | |
| 936 error("base %s is forward referenced", b.base.ident.toChars()); | |
| 937 else | |
| 938 { | |
| 939 s = b.base.search(loc, ident, flags); | |
| 940 if (s is this) // happens if s is nested in this and derives from this | |
| 941 s = null; | |
| 942 else if (s) | |
| 943 break; | |
| 944 } | |
| 945 } | |
| 946 } | |
| 947 } | |
| 948 return s; | |
| 949 } | |
| 176 | 950 |
| 73 | 951 version (DMDV2) { |
| 952 bool isFuncHidden(FuncDeclaration fd) | |
| 953 { | |
| 954 //printf("ClassDeclaration::isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toChars()); | |
| 955 Dsymbol s = search(Loc(0), fd.ident, 4|2); | |
| 956 if (!s) | |
| 176 | 957 { |
| 73 | 958 //printf("not found\n"); |
| 959 /* Because, due to a hack, if there are multiple definitions | |
| 960 * of fd.ident, null is returned. | |
| 961 */ | |
| 962 return false; | |
| 963 } | |
| 176 | 964 |
|
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Moved object and classinfo from ClassDeclaration to Global (as part of getting rid of the global state)
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diff
changeset
|
965 FuncDeclarationFinder p; p.fd = fd; |
| 73 | 966 |
| 967 s = s.toAlias(); | |
| 176 | 968 OverloadSet os = s.isOverloadSet(); |
| 73 | 969 if (os) |
| 970 { | |
|
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parents:
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diff
changeset
|
971 foreach (s2; os.a) |
| 176 | 972 { |
|
84
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Expressions -> Vector!Expression
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parents:
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diff
changeset
|
973 auto f2 = s2.isFuncDeclaration(); |
| 158 | 974 if (f2 && overloadApply(f2, p)) |
| 73 | 975 return false; |
| 976 } | |
| 977 return true; | |
| 978 } | |
| 979 else | |
| 980 { | |
| 981 FuncDeclaration fdstart = s.isFuncDeclaration(); | |
| 982 //printf("%s fdstart = %p\n", s.kind(), fdstart); | |
| 158 | 983 return !overloadApply(fdstart, p); |
| 73 | 984 } |
| 985 } | |
| 986 } | |
| 987 FuncDeclaration findFunc(Identifier ident, TypeFunction tf) | |
| 988 { | |
| 989 //printf("ClassDeclaration.findFunc(%s, %s) %s\n", ident.toChars(), tf.toChars(), toChars()); | |
| 990 | |
| 991 ClassDeclaration cd = this; | |
| 992 Array vtbl = cd.vtbl; | |
| 993 while (true) | |
| 994 { | |
| 995 for (size_t i = 0; i < vtbl.dim; i++) | |
| 996 { | |
| 997 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 998 if (!fd) | |
| 999 continue; // the first entry might be a ClassInfo | |
| 1000 | |
| 1001 //printf("\t[%d] = %s\n", i, fd.toChars()); | |
| 1002 if (ident == fd.ident && | |
| 1003 //tf.equals(fd.type) | |
| 1004 fd.type.covariant(tf) == 1 | |
| 1005 ) | |
| 1006 { //printf("\t\tfound\n"); | |
| 1007 return fd; | |
| 1008 } | |
| 1009 //else printf("\t\t%d\n", fd.type.covariant(tf)); | |
| 1010 } | |
| 1011 if (!cd) | |
| 1012 break; | |
| 1013 | |
| 1014 vtbl = cd.vtblFinal; | |
| 1015 cd = cd.baseClass; | |
| 1016 } | |
| 1017 | |
| 1018 return null; | |
| 1019 } | |
| 1020 | |
| 1021 void interfaceSemantic(Scope sc) | |
| 1022 { | |
| 1023 InterfaceDeclaration id = isInterfaceDeclaration(); | |
| 1024 | |
| 1025 vtblInterfaces = new BaseClasses(); | |
| 1026 vtblInterfaces.reserve(interfaces_dim); | |
| 1027 | |
| 1028 for (size_t i = 0; i < interfaces_dim; i++) | |
| 1029 { | |
| 1030 BaseClass b = interfaces[i]; | |
| 1031 | |
| 1032 // If this is an interface, and it derives from a COM interface, | |
| 1033 // then this is a COM interface too. | |
| 1034 if (b.base.isCOMinterface()) | |
| 1035 com = 1; | |
| 1036 | |
| 1037 if (b.base.isCPPinterface() && id) | |
| 1038 id.cpp = 1; | |
| 1039 | |
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1040 vtblInterfaces.push(b); |
| 73 | 1041 b.copyBaseInterfaces(vtblInterfaces); |
| 1042 } | |
| 1043 } | |
| 1044 | |
|
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1045 version(DMDV1) |
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1046 { |
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1047 int isNested() |
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1048 { |
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1049 assert(false); |
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1050 } |
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1051 } |
| 73 | 1052 bool isCOMclass() |
| 1053 { | |
| 1054 return com; | |
| 1055 } | |
| 176 | 1056 |
| 73 | 1057 bool isCOMinterface() |
| 1058 { | |
| 1059 return false; | |
| 1060 } | |
| 1061 | |
| 1062 version (DMDV2) { | |
| 1063 bool isCPPinterface() | |
| 1064 { | |
| 1065 return false; | |
| 1066 } | |
| 1067 } | |
| 1068 bool isAbstract() | |
| 1069 { | |
| 1070 if (isabstract) | |
| 1071 return true; | |
| 1072 | |
| 1073 for (int i = 1; i < vtbl.dim; i++) | |
| 1074 { | |
| 1075 FuncDeclaration fd = (cast(Dsymbol)vtbl.data[i]).isFuncDeclaration(); | |
| 1076 | |
| 1077 //printf("\tvtbl[%d] = %p\n", i, fd); | |
| 1078 if (!fd || fd.isAbstract()) | |
| 1079 { | |
| 1080 isabstract = true; | |
| 1081 return true; | |
| 1082 } | |
| 1083 } | |
| 1084 | |
| 1085 return false; | |
| 1086 } | |
| 176 | 1087 |
| 73 | 1088 int vtblOffset() |
| 1089 { | |
| 1090 assert(false); | |
| 1091 } | |
| 176 | 1092 |
| 73 | 1093 override string kind() |
| 1094 { | |
| 1095 return "class"; | |
| 1096 } | |
| 176 | 1097 |
| 73 | 1098 override string mangle() |
| 1099 { | |
| 1100 Dsymbol parentsave = parent; | |
| 1101 | |
| 1102 //printf("ClassDeclaration.mangle() %s.%s\n", parent.toChars(), toChars()); | |
| 1103 | |
| 1104 /* These are reserved to the compiler, so keep simple | |
| 1105 * names for them. | |
| 1106 */ | |
| 1107 if (ident is Id.Exception) | |
| 176 | 1108 { |
| 73 | 1109 if (parent.ident is Id.object) |
| 1110 parent = null; | |
| 1111 } | |
| 1112 else if (ident is Id.TypeInfo || | |
| 1113 // ident is Id.Exception || | |
| 1114 ident is Id.TypeInfo_Struct || | |
| 1115 ident is Id.TypeInfo_Class || | |
| 1116 ident is Id.TypeInfo_Typedef || | |
| 1117 ident is Id.TypeInfo_Tuple || | |
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1118 this is global.object || |
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1119 this is global.classinfo || |
| 169 | 1120 this is global.moduleinfo || |
| 73 | 1121 ident.toChars().startsWith("TypeInfo_") |
| 1122 ) | |
| 1123 { | |
| 1124 parent = null; | |
| 1125 } | |
| 1126 | |
| 1127 string id = Dsymbol.mangle(); | |
| 1128 parent = parentsave; | |
| 1129 return id; | |
| 1130 } | |
| 176 | 1131 |
| 73 | 1132 override void toDocBuffer(OutBuffer buf) |
| 1133 { | |
| 1134 assert(false); | |
| 1135 } | |
| 1136 | |
| 1137 override PROT getAccess(Dsymbol smember) // determine access to smember | |
| 1138 { | |
| 1139 PROT access_ret = PROT.PROTnone; | |
| 1140 | |
| 1141 version (LOG) { | |
| 1142 printf("+ClassDeclaration::getAccess(this = '%s', smember = '%s')\n", | |
| 1143 toChars(), smember.toChars()); | |
| 1144 } | |
| 1145 if (smember.toParent() is this) | |
| 1146 { | |
| 1147 access_ret = smember.prot(); | |
| 1148 } | |
| 1149 else | |
| 1150 { | |
| 1151 PROT access; | |
| 1152 | |
| 1153 if (smember.isDeclaration().isStatic()) | |
| 1154 { | |
| 1155 access_ret = smember.prot(); | |
| 1156 } | |
| 1157 | |
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1158 foreach (b; baseclasses) |
| 176 | 1159 { |
| 73 | 1160 access = b.base.getAccess(smember); |
| 1161 switch (access) | |
| 1162 { | |
| 1163 case PROT.PROTnone: | |
| 1164 break; | |
| 1165 | |
| 1166 case PROT.PROTprivate: | |
| 1167 access = PROT.PROTnone; // private members of base class not accessible | |
| 1168 break; | |
| 1169 | |
| 1170 case PROT.PROTpackage: | |
| 1171 case PROT.PROTprotected: | |
| 1172 case PROT.PROTpublic: | |
| 1173 case PROT.PROTexport: | |
| 1174 // If access is to be tightened | |
| 1175 if (b.protection < access) | |
| 1176 access = b.protection; | |
| 1177 | |
| 1178 // Pick path with loosest access | |
| 1179 if (access > access_ret) | |
| 1180 access_ret = access; | |
| 1181 break; | |
| 1182 | |
| 1183 default: | |
| 1184 assert(0); | |
| 1185 } | |
| 1186 } | |
| 1187 } | |
| 1188 | |
| 1189 version (LOG) { | |
| 1190 printf("-ClassDeclaration::getAccess(this = '%s', smember = '%s') = %d\n", | |
| 1191 toChars(), smember.toChars(), access_ret); | |
| 1192 } | |
| 1193 | |
| 1194 return access_ret; | |
| 1195 } | |
| 1196 | |
| 1197 override void addLocalClass(ClassDeclarations aclasses) | |
| 1198 { | |
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1199 aclasses.push(this); |
| 73 | 1200 } |
| 1201 | |
| 1202 // Back end | |
| 1203 override void toObjFile(int multiobj) // compile to .obj file | |
| 1204 { | |
| 1205 uint offset; | |
| 1206 Symbol* sinit; | |
| 1207 enum_SC scclass; | |
| 1208 | |
| 1209 //printf("ClassDeclaration.toObjFile('%s')\n", toChars()); | |
| 1210 | |
| 1211 if (!members) | |
| 1212 return; | |
| 1213 | |
| 1214 if (multiobj) | |
| 176 | 1215 { |
| 73 | 1216 obj_append(this); |
| 1217 return; | |
| 1218 } | |
| 1219 | |
| 1220 if (global.params.symdebug) | |
| 1221 toDebug(); | |
| 1222 | |
| 1223 assert(!scope_); // semantic() should have been run to completion | |
| 1224 | |
| 1225 scclass = SCglobal; | |
| 1226 if (inTemplateInstance()) | |
| 1227 scclass = SCcomdat; | |
| 1228 | |
| 1229 // Put out the members | |
|
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1230 foreach (member; members) |
| 73 | 1231 member.toObjFile(0); |
| 1232 | |
| 1233 static if (false) { | |
| 1234 // Build destructor by aggregating dtors[] | |
| 1235 Symbol* sdtor; | |
| 1236 switch (dtors.dim) | |
| 176 | 1237 { |
| 73 | 1238 case 0: |
| 1239 // No destructors for this class | |
| 1240 sdtor = null; | |
| 1241 break; | |
| 1242 | |
| 1243 case 1: | |
| 1244 // One destructor, just use it directly | |
| 1245 sdtor = (cast(DtorDeclaration)dtors.data[0]).toSymbol(); | |
| 1246 break; | |
| 1247 | |
| 1248 default: | |
| 176 | 1249 { |
| 73 | 1250 /* Build a destructor that calls all the |
| 1251 * other destructors in dtors[]. | |
| 1252 */ | |
| 1253 | |
| 1254 elem* edtor = null; | |
| 1255 | |
| 1256 // Declare 'this' pointer for our new destructor | |
| 1257 Symbol* sthis = symbol_calloc("this"); | |
| 1258 sthis.Stype = type_fake(TYnptr); | |
| 1259 sthis.Stype.Tcount++; | |
| 1260 sthis.Sclass = SCfastpar; | |
| 1261 sthis.Spreg = AX; | |
| 1262 sthis.Sfl = FLauto; | |
| 1263 | |
| 1264 // Call each of the destructors in dtors[] | |
| 1265 // in reverse order | |
| 89 | 1266 for (size_t i = 0; i < dtors.dim; i++) |
| 176 | 1267 { |
| 73 | 1268 DtorDeclaration d = cast(DtorDeclaration)dtors.data[i]; |
| 1269 Symbol* s = d.toSymbol(); | |
| 1270 elem* e = el_bin(OPcall, TYvoid, el_var(s), el_var(sthis)); | |
| 1271 edtor = el_combine(e, edtor); | |
| 1272 } | |
| 1273 | |
| 1274 // Create type for the function | |
| 1275 .type* t = type_alloc(TYjfunc); | |
| 1276 t.Tflags |= TFprototype | TFfixed; | |
| 1277 t.Tmangle = mTYman_d; | |
| 1278 t.Tnext = tsvoid; | |
| 1279 tsvoid.Tcount++; | |
| 1280 | |
| 1281 // Create the function, sdtor, and write it out | |
| 1282 localgot = null; | |
| 1283 sdtor = toSymbolX("__dtor", SCglobal, t, "FZv"); | |
| 1284 block* b = block_calloc(); | |
| 1285 b.BC = BCret; | |
| 1286 b.Belem = edtor; | |
| 1287 sdtor.Sfunc.Fstartblock = b; | |
| 1288 cstate.CSpsymtab = &sdtor.Sfunc.Flocsym; | |
| 1289 symbol_add(sthis); | |
| 1290 writefunc(sdtor); | |
| 1291 } | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 // Generate C symbols | |
| 1296 toSymbol(); | |
| 1297 toVtblSymbol(); | |
| 1298 sinit = toInitializer(); | |
| 1299 | |
| 1300 ////////////////////////////////////////////// | |
| 1301 | |
| 1302 // Generate static initializer | |
| 1303 sinit.Sclass = scclass; | |
| 1304 sinit.Sfl = FLdata; | |
| 1305 version (ELFOBJ) { // Burton | |
| 1306 sinit.Sseg = Segment.CDATA; | |
| 1307 } | |
| 1308 version (MACHOBJ) { | |
| 1309 sinit.Sseg = Segment.DATA; | |
| 1310 } | |
| 1311 toDt(&sinit.Sdt); | |
| 1312 outdata(sinit); | |
| 1313 | |
| 1314 ////////////////////////////////////////////// | |
| 1315 | |
| 1316 // Put out the TypeInfo | |
| 1317 type.getTypeInfo(null); | |
|
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1318 //type.vtinfo.toObjFile(multiobj); |
| 73 | 1319 |
| 1320 ////////////////////////////////////////////// | |
| 1321 | |
| 1322 // Put out the ClassInfo | |
| 1323 csym.Sclass = scclass; | |
| 1324 csym.Sfl = FLdata; | |
| 1325 | |
| 1326 /* The layout is: | |
| 1327 { | |
| 1328 void **vptr; | |
| 1329 monitor_t monitor; | |
| 1330 byte[] initializer; // static initialization data | |
| 1331 char[] name; // class name | |
| 1332 void *[] vtbl; | |
| 1333 Interface[] interfaces; | |
| 1334 ClassInfo *base; // base class | |
| 1335 void *destructor; | |
| 1336 void *invariant; // class invariant | |
| 1337 uint flags; | |
| 1338 void *deallocator; | |
| 1339 OffsetTypeInfo[] offTi; | |
| 1340 void *defaultConstructor; | |
| 1341 const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function | |
|
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1342 //TypeInfo typeinfo; |
| 73 | 1343 } |
| 1344 */ | |
| 1345 dt_t* dt = null; | |
| 1346 offset = CLASSINFO_SIZE; // must be ClassInfo.size | |
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1347 if (global.classinfo) |
| 73 | 1348 { |
|
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1349 if (global.classinfo.structsize != CLASSINFO_SIZE) |
| 73 | 1350 error("D compiler and phobos' object.d are mismatched"); |
| 176 | 1351 |
|
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1352 dtxoff(&dt, global.classinfo.toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo |
| 73 | 1353 } |
| 1354 else | |
|
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1355 { |
| 73 | 1356 dtdword(&dt, 0); // BUG: should be an assert() |
|
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1357 } |
| 73 | 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_")) | |
| 176 | 1370 { |
| 73 | 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) |
| 176 | 1466 { |
| 73 | 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) |
| 176 | 1496 { |
| 73 | 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 } | |
| 176 | 1511 |
| 73 | 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) |
| 176 | 1544 { |
| 73 | 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 } | |
| 176 | 1575 |
| 73 | 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++) |
| 176 | 1581 { |
| 73 | 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++) | |
| 176 | 1588 { |
| 73 | 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 | |
| 176 | 1642 { |
| 73 | 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())) | |
| 176 | 1652 { |
| 73 | 1653 Symbol* s = fd.toSymbol(); |
| 1654 | |
| 1655 version (DMDV2) { | |
| 1656 if (isFuncHidden(fd)) | |
| 176 | 1657 { |
| 73 | 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++) | |
| 176 | 1663 { |
| 73 | 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 } | |
| 176 | 1704 |
| 73 | 1705 void toDebug() |
| 1706 { | |
| 1707 assert(false); | |
| 1708 } | |
| 176 | 1709 |
| 73 | 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) |
| 176 | 1739 { |
| 73 | 1740 if (bs.fillVtbl(this, null, 0)) |
| 1741 { | |
| 1742 if (bc == bs) | |
| 176 | 1743 { |
| 73 | 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++) |
| 176 | 1754 { |
| 73 | 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++) | |
| 176 | 1762 { |
| 73 | 1763 BaseClass bs = cast(BaseClass)cd.vtblInterfaces.data[k]; |
| 1764 | |
| 1765 if (bc == bs) | |
| 176 | 1766 { |
| 73 | 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 /************************************* | |
| 1781 * Create the "ClassInfo" symbol | |
| 1782 */ | |
| 1783 override Symbol* toSymbol() | |
| 1784 { | |
| 1785 if (!csym) | |
| 1786 { | |
| 1787 Symbol* s; | |
| 1788 | |
| 176 | 1789 s = toSymbolX("__Class", SC.SCextern, global.scc.Stype, "Z"); |
| 73 | 1790 s.Sfl = FL.FLextern; |
| 1791 s.Sflags |= SFL.SFLnodebug; | |
| 1792 csym = s; | |
| 1793 slist_add(s); | |
| 1794 } | |
| 1795 | |
| 1796 return csym; | |
| 1797 } | |
| 1798 | |
| 1799 /************************************* | |
| 1800 * This is accessible via the ClassData, but since it is frequently | |
| 1801 * needed directly (like for rtti comparisons), make it directly accessible. | |
| 1802 */ | |
| 1803 Symbol* toVtblSymbol() | |
| 1804 { | |
| 1805 if (!vtblsym) | |
| 1806 { | |
| 1807 if (!csym) | |
| 1808 toSymbol(); | |
| 1809 | |
| 1810 TYPE* t = type_alloc(TYM.TYnptr | mTY.mTYconst); | |
| 1811 t.Tnext = tsvoid; | |
| 1812 t.Tnext.Tcount++; | |
| 1813 t.Tmangle = mTYman.mTYman_d; | |
| 1814 | |
| 1815 Symbol* s = toSymbolX("__vtbl", SC.SCextern, t, "Z"); | |
| 1816 s.Sflags |= SFL.SFLnodebug; | |
| 1817 s.Sfl = FL.FLextern; | |
| 1818 vtblsym = s; | |
| 1819 slist_add(s); | |
| 1820 } | |
| 1821 return vtblsym; | |
| 1822 } | |
| 176 | 1823 |
| 73 | 1824 // Generate the data for the static initializer. |
| 1825 void toDt(dt_t **pdt) | |
| 1826 { | |
| 1827 //printf("ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1828 | |
| 1829 // Put in first two members, the vtbl[] and the monitor | |
| 1830 dtxoff(pdt, toVtblSymbol(), 0, TYnptr); | |
| 1831 dtdword(pdt, 0); // monitor | |
| 1832 | |
| 1833 // Put in the rest | |
| 1834 toDt2(pdt, this); | |
| 1835 | |
| 1836 //printf("-ClassDeclaration.toDt(this = '%s')\n", toChars()); | |
| 1837 } | |
| 176 | 1838 |
| 73 | 1839 void toDt2(dt_t** pdt, ClassDeclaration cd) |
| 1840 { | |
| 1841 uint offset; | |
| 89 | 1842 |
| 73 | 1843 dt_t* dt; |
| 1844 uint csymoffset; | |
| 1845 | |
| 1846 version (LOG) { | |
| 1847 printf("ClassDeclaration.toDt2(this = '%s', cd = '%s')\n", toChars(), cd.toChars()); | |
| 1848 } | |
| 1849 if (baseClass) | |
| 1850 { | |
| 1851 baseClass.toDt2(pdt, cd); | |
| 1852 offset = baseClass.structsize; | |
| 1853 } | |
| 1854 else | |
| 1855 { | |
| 1856 offset = 8; | |
| 1857 } | |
| 1858 | |
| 1859 // Note equivalence of this loop to struct's | |
| 89 | 1860 for (size_t i = 0; i < fields.dim; i++) |
| 73 | 1861 { |
| 79 | 1862 VarDeclaration v = cast(VarDeclaration)fields[i]; |
| 73 | 1863 Initializer init; |
| 1864 | |
| 1865 //printf("\t\tv = '%s' v.offset = %2d, offset = %2d\n", v.toChars(), v.offset, offset); | |
| 1866 dt = null; | |
| 1867 init = v.init; | |
| 1868 if (init) | |
| 176 | 1869 { |
| 73 | 1870 //printf("\t\t%s has initializer %s\n", v.toChars(), init.toChars()); |
| 1871 ExpInitializer ei = init.isExpInitializer(); | |
| 1872 Type tb = v.type.toBasetype(); | |
| 1873 if (ei && tb.ty == Tsarray) | |
| 1874 (cast(TypeSArray)tb).toDtElem(&dt, ei.exp); | |
| 1875 else | |
| 1876 dt = init.toDt(); | |
| 1877 } | |
| 1878 else if (v.offset >= offset) | |
| 1879 { //printf("\t\tdefault initializer\n"); | |
| 1880 v.type.toDt(&dt); | |
| 1881 } | |
| 1882 if (dt) | |
| 1883 { | |
| 1884 if (v.offset < offset) | |
| 1885 error("duplicated union initialization for %s", v.toChars()); | |
| 1886 else | |
| 1887 { | |
| 1888 if (offset < v.offset) | |
| 1889 dtnzeros(pdt, v.offset - offset); | |
| 1890 dtcat(pdt, dt); | |
| 1891 offset = v.offset + cast(uint)v.type.size(); | |
| 1892 } | |
| 1893 } | |
| 1894 } | |
| 1895 | |
| 1896 // Interface vptr initializations | |
| 1897 toSymbol(); // define csym | |
| 1898 | |
|
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114
diff
changeset
|
1899 foreach (b; vtblInterfaces) |
| 176 | 1900 { |
| 73 | 1901 /// version (1 || INTERFACE_VIRTUAL) { |
| 1902 for (ClassDeclaration cd2 = cd; 1; cd2 = cd2.baseClass) | |
| 1903 { | |
| 1904 assert(cd2); | |
| 1905 csymoffset = cd2.baseVtblOffset(b); | |
| 1906 if (csymoffset != ~0) | |
| 1907 { | |
| 1908 if (offset < b.offset) | |
| 1909 dtnzeros(pdt, b.offset - offset); | |
| 1910 dtxoff(pdt, cd2.toSymbol(), csymoffset, TYnptr); | |
| 1911 break; | |
| 1912 } | |
| 1913 } | |
| 1914 /// } else { | |
| 1915 /// csymoffset = baseVtblOffset(b); | |
| 1916 /// assert(csymoffset != ~0); | |
| 1917 /// dtxoff(pdt, csym, csymoffset, TYnptr); | |
| 1918 /// } | |
| 1919 offset = b.offset + 4; | |
| 1920 } | |
| 1921 | |
| 1922 if (offset < structsize) | |
| 1923 dtnzeros(pdt, structsize - offset); | |
| 1924 } | |
| 1925 | |
| 1926 Symbol* vtblsym; | |
| 1927 | |
| 1928 ///ClassDeclaration isClassDeclaration() { return cast(ClassDeclaration)this; } /// huh? | |
| 1929 override ClassDeclaration isClassDeclaration() { return this; } | |
| 1930 } |