Mercurial > projects > ddmd
annotate dmd/InterfaceDeclaration.d @ 187:b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
| author | Abscissa |
|---|---|
| date | Tue, 07 Jun 2011 23:37:34 -0400 |
| parents | e3afd1303184 |
| children |
| rev | line source |
|---|---|
| 0 | 1 module dmd.InterfaceDeclaration; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.ClassDeclaration; |
| 5 import dmd.Loc; | |
| 6 import dmd.DsymbolTable; | |
| 7 import dmd.STC; | |
| 8 import dmd.Type; | |
| 9 import dmd.TY; | |
| 10 import dmd.LINK; | |
|
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11 import dmd.Parameter; |
| 0 | 12 import dmd.Util; |
| 13 import dmd.TypeTuple; | |
| 14 import dmd.PROT; | |
| 15 import dmd.TypeClass; | |
| 16 import dmd.Identifier; | |
| 17 import dmd.ArrayTypes; | |
| 18 import dmd.Dsymbol; | |
| 19 import dmd.Scope; | |
| 20 import dmd.Global; | |
|
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21 import dmd.Module; |
| 0 | 22 import dmd.BaseClass; |
| 23 import dmd.Id; | |
| 24 | |
| 25 import dmd.backend.Symbol; | |
| 26 import dmd.backend.TYM; | |
| 27 import dmd.backend.dt_t; | |
| 28 import dmd.backend.Util; | |
| 29 import dmd.codegen.Util; | |
| 30 import dmd.backend.SC; | |
| 31 import dmd.backend.FL; | |
| 32 import dmd.backend.LIST; | |
| 33 import dmd.backend.SFL; | |
| 34 | |
|
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Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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35 import dmd.DDMDExtensions; |
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36 |
| 0 | 37 class InterfaceDeclaration : ClassDeclaration |
| 38 { | |
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39 mixin insertMemberExtension!(typeof(this)); |
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40 |
| 0 | 41 version (DMDV2) { |
| 42 bool cpp; // true if this is a C++ interface | |
| 43 } | |
| 44 this(Loc loc, Identifier id, BaseClasses baseclasses) | |
| 45 { | |
| 178 | 46 register(); |
| 0 | 47 super(loc, id, baseclasses); |
| 176 | 48 |
| 0 | 49 if (id is Id.IUnknown) // IUnknown is the root of all COM interfaces |
| 50 { | |
| 51 com = true; | |
| 52 cpp = true; // IUnknown is also a C++ interface | |
| 53 } | |
| 54 } | |
| 176 | 55 |
| 72 | 56 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 57 { |
| 123 | 58 InterfaceDeclaration id; |
| 59 | |
| 60 if (s) | |
| 61 id = cast(InterfaceDeclaration)s; | |
| 62 else | |
| 63 id = new InterfaceDeclaration(loc, ident, null); | |
| 64 | |
| 65 ClassDeclaration.syntaxCopy(id); | |
| 66 return id; | |
| 0 | 67 } |
| 176 | 68 |
| 72 | 69 override void semantic(Scope sc) |
| 0 | 70 { |
| 71 //printf("InterfaceDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 72 if (inuse) | |
| 73 return; | |
| 74 | |
| 75 if (!sc) | |
| 76 sc = scope_; | |
| 77 if (!parent && sc.parent && !sc.parent.isModule()) | |
| 78 parent = sc.parent; | |
| 79 | |
| 80 type = type.semantic(loc, sc); | |
| 81 handle = type; | |
| 82 | |
| 83 if (!members) // if forward reference | |
| 176 | 84 { |
| 0 | 85 //printf("\tinterface '%s' is forward referenced\n", toChars()); |
| 86 return; | |
| 87 } | |
| 88 if (symtab) // if already done | |
| 176 | 89 { |
| 0 | 90 if (!scope_) |
| 91 return; | |
| 92 } | |
| 93 else | |
| 94 symtab = new DsymbolTable(); | |
| 95 | |
| 96 Scope scx = null; | |
| 97 if (scope_) | |
| 176 | 98 { |
| 0 | 99 sc = scope_; |
| 100 scx = scope_; // save so we don't make redundant copies | |
| 101 scope_ = null; | |
| 102 } | |
| 103 | |
| 104 if (sc.stc & STC.STCdeprecated) | |
| 105 { | |
| 106 isdeprecated = true; | |
| 107 } | |
| 108 | |
| 109 // Expand any tuples in baseclasses[] | |
| 89 | 110 for (size_t i = 0; i < baseclasses.dim; ) |
| 176 | 111 { |
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112 auto b = baseclasses[0]; |
| 0 | 113 b.type = b.type.semantic(loc, sc); |
| 114 Type tb = b.type.toBasetype(); | |
| 115 | |
| 116 if (tb.ty == TY.Ttuple) | |
| 117 { TypeTuple tup = cast(TypeTuple)tb; | |
| 118 PROT protection = b.protection; | |
| 119 baseclasses.remove(i); | |
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120 size_t dim = Parameter.dim(tup.arguments); |
| 0 | 121 for (size_t j = 0; j < dim; j++) |
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122 { auto arg = Parameter.getNth(tup.arguments, j); |
| 0 | 123 b = new BaseClass(arg.type, protection); |
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124 baseclasses.insert(i + j, b); |
| 0 | 125 } |
| 126 } | |
| 127 else | |
| 128 i++; | |
| 129 } | |
| 130 | |
| 131 if (!baseclasses.dim && sc.linkage == LINK.LINKcpp) | |
| 132 cpp = 1; | |
| 133 | |
| 134 // Check for errors, handle forward references | |
| 89 | 135 for (size_t i = 0; i < baseclasses.dim; ) |
| 176 | 136 { |
| 0 | 137 TypeClass tc; |
| 138 BaseClass b; | |
| 139 Type tb; | |
| 140 | |
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141 b = baseclasses[i]; |
| 0 | 142 b.type = b.type.semantic(loc, sc); |
| 143 tb = b.type.toBasetype(); | |
| 144 if (tb.ty == TY.Tclass) | |
| 145 tc = cast(TypeClass)tb; | |
| 146 else | |
| 147 tc = null; | |
| 148 if (!tc || !tc.sym.isInterfaceDeclaration()) | |
| 149 { | |
| 150 error("base type must be interface, not %s", b.type.toChars()); | |
| 151 baseclasses.remove(i); | |
| 152 continue; | |
| 153 } | |
| 154 else | |
| 155 { | |
| 156 // Check for duplicate interfaces | |
| 157 for (size_t j = 0; j < i; j++) | |
| 158 { | |
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159 auto b2 = baseclasses[j]; |
| 0 | 160 if (b2.base is tc.sym) |
| 161 error("inherits from duplicate interface %s", b2.base.toChars()); | |
| 162 } | |
| 163 | |
| 164 b.base = tc.sym; | |
| 165 if (b.base == this || isBaseOf2(b.base)) | |
| 166 { | |
| 167 error("circular inheritance of interface"); | |
| 168 baseclasses.remove(i); | |
| 169 continue; | |
| 170 } | |
| 171 if (!b.base.symtab) | |
| 176 | 172 { |
| 0 | 173 // Try to resolve forward reference |
| 174 if (sc.mustsemantic && b.base.scope_) | |
| 175 b.base.semantic(null); | |
| 176 } | |
| 177 if (!b.base.symtab || b.base.scope_ || b.base.inuse) | |
| 178 { | |
| 179 //error("forward reference of base class %s", baseClass.toChars()); | |
| 180 // Forward reference of base, try again later | |
| 181 //printf("\ttry later, forward reference of base %s\n", b.base.toChars()); | |
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182 scope_ = scx ? scx : sc.clone(); |
| 0 | 183 scope_.setNoFree(); |
| 184 scope_.module_.addDeferredSemantic(this); | |
| 185 return; | |
| 186 } | |
| 187 } | |
| 188 static if (false) { | |
| 189 // Inherit const/invariant from base class | |
| 190 storage_class |= b.base.storage_class & STC.STC_TYPECTOR; | |
| 191 } | |
| 192 i++; | |
| 193 } | |
| 194 | |
| 195 interfaces_dim = baseclasses.dim; | |
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196 interfaces = baseclasses.ptr; |
| 0 | 197 |
| 198 interfaceSemantic(sc); | |
| 199 | |
| 200 if (vtblOffset()) | |
| 201 vtbl.push(cast(void*)this); // leave room at vtbl[0] for classinfo | |
| 202 | |
| 203 // Cat together the vtbl[]'s from base interfaces | |
| 89 | 204 for (size_t i = 0; i < interfaces_dim; i++) |
| 176 | 205 { |
| 0 | 206 BaseClass b = interfaces[i]; |
| 207 | |
| 208 // Skip if b has already appeared | |
| 209 for (int k = 0; k < i; k++) | |
| 210 { | |
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211 if (b == interfaces[k]) |
| 0 | 212 goto Lcontinue; |
| 213 } | |
| 214 | |
| 215 // Copy vtbl[] from base class | |
| 216 if (b.base.vtblOffset()) | |
| 217 { int d = b.base.vtbl.dim; | |
| 218 if (d > 1) | |
| 219 { | |
| 220 vtbl.reserve(d - 1); | |
| 221 for (int j = 1; j < d; j++) | |
| 222 vtbl.push(b.base.vtbl.data[j]); | |
| 223 } | |
| 224 } | |
| 225 else | |
| 226 { | |
| 227 vtbl.append(b.base.vtbl); | |
| 228 } | |
| 229 | |
| 230 Lcontinue: | |
| 231 ; | |
| 232 } | |
| 233 | |
| 234 protection = sc.protection; | |
| 235 storage_class |= sc.stc & STC.STC_TYPECTOR; | |
| 236 | |
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237 foreach(Dsymbol s; members) |
| 13 | 238 s.addMember(sc, this, true); |
| 0 | 239 |
| 240 sc = sc.push(this); | |
| 241 sc.stc &= ~(STC.STCfinal | STC.STCauto | STC.STCscope | STC.STCstatic | | |
| 242 STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCtls | STC.STCgshared); | |
| 243 sc.stc |= storage_class & STC.STC_TYPECTOR; | |
| 244 sc.parent = this; | |
| 245 if (isCOMinterface()) | |
| 246 sc.linkage = LINK.LINKwindows; | |
| 247 else if (isCPPinterface()) | |
| 248 sc.linkage = LINK.LINKcpp; | |
| 249 sc.structalign = 8; | |
| 250 structalign = sc.structalign; | |
| 251 sc.offset = PTRSIZE * 2; | |
| 252 inuse++; | |
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253 foreach(Dsymbol s; members) |
| 0 | 254 s.semantic(sc); |
| 255 inuse--; | |
| 256 //members.print(); | |
| 257 sc.pop(); | |
| 258 //printf("-InterfaceDeclaration.semantic(%s), type = %p\n", toChars(), type); | |
| 259 } | |
| 176 | 260 |
| 72 | 261 override bool isBaseOf(ClassDeclaration cd, int* poffset) |
| 0 | 262 { |
| 263 uint j; | |
| 264 | |
| 265 //printf("%s.InterfaceDeclaration.isBaseOf(cd = '%s')\n", toChars(), cd.toChars()); | |
| 266 assert(!baseClass); | |
| 267 for (j = 0; j < cd.interfaces_dim; j++) | |
| 268 { | |
| 269 BaseClass b = cd.interfaces[j]; | |
| 270 | |
| 271 //printf("\tbase %s\n", b.base.toChars()); | |
| 272 if (this == b.base) | |
| 273 { | |
| 274 //printf("\tfound at offset %d\n", b.offset); | |
| 275 if (poffset) | |
| 176 | 276 { |
| 0 | 277 *poffset = b.offset; |
| 278 if (j && cd.isInterfaceDeclaration()) | |
| 279 *poffset = OFFSET_RUNTIME; | |
| 280 } | |
| 281 return true; | |
| 282 } | |
| 283 if (isBaseOf(b, poffset)) | |
| 176 | 284 { |
| 0 | 285 if (j && poffset && cd.isInterfaceDeclaration()) |
| 286 *poffset = OFFSET_RUNTIME; | |
| 287 return true; | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 if (cd.baseClass && isBaseOf(cd.baseClass, poffset)) | |
| 292 return true; | |
| 293 | |
| 294 if (poffset) | |
| 295 *poffset = 0; | |
| 296 return false; | |
| 297 } | |
| 176 | 298 |
| 0 | 299 bool isBaseOf(BaseClass bc, int* poffset) |
| 300 { | |
| 64 | 301 //printf("%s.InterfaceDeclaration.isBaseOf(bc = '%s')\n", toChars(), bc.base.toChars()); |
| 302 for (uint j = 0; j < bc.baseInterfaces.length; j++) | |
| 303 { | |
| 304 BaseClass b = bc.baseInterfaces[j]; | |
| 305 | |
| 306 if (this == b.base) | |
| 307 { | |
| 308 if (poffset) | |
| 176 | 309 { |
| 64 | 310 *poffset = b.offset; |
| 311 if (j && bc.base.isInterfaceDeclaration()) | |
| 312 *poffset = OFFSET_RUNTIME; | |
| 313 } | |
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314 return true; |
| 64 | 315 } |
| 316 if (isBaseOf(b, poffset)) | |
| 176 | 317 { |
| 64 | 318 if (j && poffset && bc.base.isInterfaceDeclaration()) |
| 319 *poffset = OFFSET_RUNTIME; | |
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320 return true; |
| 64 | 321 } |
| 322 } | |
| 323 if (poffset) | |
| 324 *poffset = 0; | |
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325 return false; |
| 0 | 326 } |
| 176 | 327 |
| 72 | 328 override string kind() |
| 0 | 329 { |
| 330 assert(false); | |
| 331 } | |
| 176 | 332 |
| 0 | 333 /**************************************** |
| 334 * Determine if slot 0 of the vtbl[] is reserved for something else. | |
| 335 * For class objects, yes, this is where the ClassInfo ptr goes. | |
| 336 * For COM interfaces, no. | |
| 337 * For non-COM interfaces, yes, this is where the Interface ptr goes. | |
| 338 */ | |
| 72 | 339 override int vtblOffset() |
| 0 | 340 { |
| 341 if (isCOMinterface() || isCPPinterface()) | |
| 342 return 0; | |
| 343 return 1; | |
| 344 } | |
| 176 | 345 |
| 0 | 346 version (DMDV2) { |
| 72 | 347 override bool isCPPinterface() |
| 0 | 348 { |
| 349 return cpp; | |
| 350 } | |
| 351 } | |
| 72 | 352 override bool isCOMinterface() |
| 0 | 353 { |
| 354 return com; | |
| 355 } | |
| 356 | |
| 72 | 357 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 358 { |
| 359 uint offset; | |
| 360 Symbol* sinit; | |
| 361 SC scclass; | |
| 362 | |
| 363 //printf("InterfaceDeclaration.toObjFile('%s')\n", toChars()); | |
| 364 | |
| 365 if (!members) | |
| 366 return; | |
| 367 | |
| 368 if (global.params.symdebug) | |
| 369 toDebug(); | |
| 370 | |
| 371 scclass = SCglobal; | |
| 372 if (inTemplateInstance()) | |
| 373 scclass = SCcomdat; | |
| 374 | |
| 375 // Put out the members | |
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376 foreach(Dsymbol member; members) |
| 0 | 377 { |
| 378 if (!member.isFuncDeclaration()) | |
| 379 member.toObjFile(0); | |
| 380 } | |
| 381 | |
| 382 // Generate C symbols | |
| 383 toSymbol(); | |
| 384 | |
| 385 ////////////////////////////////////////////// | |
| 386 | |
| 387 // Put out the TypeInfo | |
| 388 type.getTypeInfo(null); | |
| 389 type.vtinfo.toObjFile(multiobj); | |
| 390 | |
| 391 ////////////////////////////////////////////// | |
| 392 | |
| 393 // Put out the ClassInfo | |
| 394 csym.Sclass = scclass; | |
| 395 csym.Sfl = FLdata; | |
| 396 | |
| 397 /* The layout is: | |
| 398 { | |
| 399 void **vptr; | |
| 400 monitor_t monitor; | |
| 401 byte[] initializer; // static initialization data | |
| 402 char[] name; // class name | |
| 403 void *[] vtbl; | |
| 404 Interface[] interfaces; | |
| 405 Object *base; // base class | |
| 406 void *destructor; | |
| 407 void *invariant; // class invariant | |
| 408 uint flags; | |
| 409 void *deallocator; | |
| 410 OffsetTypeInfo[] offTi; | |
| 411 void *defaultConstructor; | |
| 412 #if DMDV2 | |
| 413 const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function | |
| 414 #endif | |
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415 //TypeInfo typeinfo; |
| 0 | 416 } |
| 417 */ | |
| 418 dt_t *dt = null; | |
| 419 | |
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420 if (global.classinfo) |
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421 dtxoff(&dt, global.classinfo.toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo |
| 0 | 422 else |
| 423 dtdword(&dt, 0); // BUG: should be an assert() | |
| 424 dtdword(&dt, 0); // monitor | |
| 425 | |
| 426 // initializer[] | |
| 427 dtdword(&dt, 0); // size | |
| 428 dtdword(&dt, 0); // initializer | |
| 429 | |
| 430 // name[] | |
| 431 string name = toPrettyChars(); | |
| 432 size_t namelen = name.length; | |
| 433 dtdword(&dt, namelen); | |
| 434 dtabytes(&dt, TYnptr, 0, namelen + 1, toStringz(name)); | |
| 435 | |
| 436 // vtbl[] | |
| 437 dtdword(&dt, 0); | |
| 438 dtdword(&dt, 0); | |
| 439 | |
| 440 // vtblInterfaces.data[] | |
| 441 dtdword(&dt, vtblInterfaces.dim); | |
| 442 if (vtblInterfaces.dim) | |
| 443 { | |
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444 if (global.classinfo) |
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445 assert(global.classinfo.structsize == CLASSINFO_SIZE); |
| 0 | 446 offset = CLASSINFO_SIZE; |
| 447 dtxoff(&dt, csym, offset, TYnptr); // (*) | |
| 448 } | |
| 449 else | |
| 450 dtdword(&dt, 0); | |
| 451 | |
| 452 // base | |
| 453 assert(!baseClass); | |
| 454 dtdword(&dt, 0); | |
| 455 | |
| 456 // dtor | |
| 457 dtdword(&dt, 0); | |
| 458 | |
| 459 // invariant | |
| 460 dtdword(&dt, 0); | |
| 461 | |
| 462 // flags | |
| 463 dtdword(&dt, 4 | isCOMinterface() | 32); | |
| 464 | |
| 465 // deallocator | |
| 466 dtdword(&dt, 0); | |
| 467 | |
| 468 // offTi[] | |
| 469 dtdword(&dt, 0); | |
| 470 dtdword(&dt, 0); // null for now, fix later | |
| 471 | |
| 472 // defaultConstructor | |
| 473 dtdword(&dt, 0); | |
| 474 | |
| 475 version (DMDV2) { | |
| 476 // xgetMembers | |
| 477 dtdword(&dt, 0); | |
| 478 } | |
| 479 | |
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480 //dtxoff(&dt, type.vtinfo.toSymbol(), 0, TYnptr); // typeinfo |
| 0 | 481 |
| 482 ////////////////////////////////////////////// | |
| 483 | |
| 484 // Put out vtblInterfaces.data[]. Must immediately follow csym, because | |
| 485 // of the fixup (*) | |
| 486 | |
| 487 offset += vtblInterfaces.dim * (4 * PTRSIZE); | |
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488 foreach (b; vtblInterfaces) |
| 176 | 489 { |
| 0 | 490 ClassDeclaration id = b.base; |
| 491 | |
| 492 // ClassInfo | |
| 493 dtxoff(&dt, id.toSymbol(), 0, TYnptr); | |
| 494 | |
| 495 // vtbl[] | |
| 496 dtdword(&dt, 0); | |
| 497 dtdword(&dt, 0); | |
| 498 | |
| 499 // this offset | |
| 500 dtdword(&dt, b.offset); | |
| 501 } | |
| 502 | |
| 503 csym.Sdt = dt; | |
| 504 version (ELFOBJ) { | |
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Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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505 csym.Sseg = Segment.CDATA; |
| 0 | 506 } |
| 507 version (MACHOBJ) { | |
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fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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508 csym.Sseg = Segment.DATA; |
| 0 | 509 } |
| 510 outdata(csym); | |
| 511 if (isExport()) | |
| 512 obj_export(csym,0); | |
| 513 } | |
| 514 | |
| 515 /************************************* | |
| 516 * Create the "InterfaceInfo" symbol | |
| 517 */ | |
| 72 | 518 override Symbol* toSymbol() |
| 0 | 519 { |
| 520 if (!csym) | |
| 521 { | |
| 522 Symbol *s; | |
| 523 | |
| 176 | 524 s = toSymbolX("__Interface", SCextern, global.scc.Stype, "Z"); |
| 0 | 525 s.Sfl = FLextern; |
| 526 s.Sflags |= SFLnodebug; | |
| 527 csym = s; | |
| 528 slist_add(s); | |
| 529 } | |
| 530 return csym; | |
| 531 } | |
| 532 | |
| 72 | 533 override InterfaceDeclaration isInterfaceDeclaration() { return this; } |
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22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
534 } |