Mercurial > projects > ddmd
annotate dmd/FuncDeclaration.d @ 63:cab4c37afb89
A bunch of implementations
| author | korDen |
|---|---|
| date | Mon, 23 Aug 2010 16:52:24 +0400 |
| parents | fd4acc376c45 |
| children | ee3a9f34dc48 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.FuncDeclaration; |
| 2 | |
| 3 import dmd.Declaration; | |
| 4 import dmd.DotIdExp; | |
| 63 | 5 import dmd.AddrExp; |
| 0 | 6 import dmd.TryFinallyStatement; |
| 7 import dmd.StaticDtorDeclaration; | |
| 63 | 8 import dmd.GlobalExpressions; |
| 0 | 9 import dmd.PeelStatement; |
| 10 import dmd.SynchronizedStatement; | |
| 11 import dmd.TOK; | |
| 12 import dmd.SymOffExp; | |
| 13 import dmd.AssignExp; | |
| 14 import dmd.ExpInitializer; | |
| 15 import dmd.BE; | |
| 16 import dmd.Id; | |
| 17 import dmd.StringExp; | |
| 18 import dmd.DsymbolExp; | |
| 19 import dmd.HaltExp; | |
| 20 import dmd.CommaExp; | |
| 21 import dmd.ReturnStatement; | |
| 22 import dmd.IntegerExp; | |
| 23 import dmd.ExpStatement; | |
| 24 import dmd.CSX; | |
| 25 import dmd.CompoundStatement; | |
| 26 import dmd.LabelStatement; | |
| 27 import dmd.ThisExp; | |
| 28 import dmd.SuperExp; | |
| 29 import dmd.IdentifierExp; | |
| 30 import dmd.AssertExp; | |
| 31 import dmd.CallExp; | |
| 32 import dmd.RET; | |
| 33 import dmd.VarExp; | |
| 34 import dmd.TupleDeclaration; | |
| 35 import dmd.ThisDeclaration; | |
| 36 import dmd.TypeTuple; | |
| 37 import dmd.TemplateInstance; | |
| 38 import dmd.ScopeDsymbol; | |
| 39 import dmd.AliasDeclaration; | |
| 40 import dmd.MOD; | |
| 41 import dmd.PROT; | |
| 42 import dmd.Lexer; | |
| 43 import dmd.LINK; | |
| 44 import dmd.CtorDeclaration; | |
| 45 import dmd.Global; | |
| 46 import dmd.DtorDeclaration; | |
| 47 import dmd.InvariantDeclaration; | |
| 48 import dmd.TY; | |
| 49 import dmd.PtrExp; | |
| 50 import dmd.DeclarationExp; | |
| 51 import dmd.InlineDoState; | |
| 52 import dmd.Argument; | |
| 53 import dmd.StructDeclaration; | |
| 54 import dmd.ClassDeclaration; | |
| 55 import dmd.InterfaceDeclaration; | |
| 56 import dmd.Array; | |
| 57 import dmd.Statement; | |
| 58 import dmd.Identifier; | |
| 59 import dmd.VarDeclaration; | |
| 60 import dmd.LabelDsymbol; | |
| 61 import dmd.DsymbolTable; | |
| 62 import dmd.ArrayTypes; | |
| 63 import dmd.Loc; | |
| 64 import dmd.ILS; | |
| 65 import dmd.ForeachStatement; | |
| 66 import dmd.Type; | |
| 67 import dmd.BUILTIN; | |
| 68 import dmd.TypeFunction; | |
| 69 import dmd.Expression; | |
| 70 import dmd.STC; | |
| 71 import dmd.Dsymbol; | |
| 72 import dmd.Scope; | |
| 73 import dmd.OutBuffer; | |
| 74 import dmd.HdrGenState; | |
| 75 import dmd.MATCH; | |
| 76 import dmd.AggregateDeclaration; | |
| 77 import dmd.InterState; | |
| 78 import dmd.InlineScanState; | |
| 79 import dmd.IRState; | |
| 80 import dmd.Util; | |
| 81 import dmd.BaseClass; | |
| 82 import dmd.Module; | |
| 83 import dmd.ILS; | |
| 84 import dmd.InlineCostState; | |
| 85 | |
| 86 import dmd.expression.Util; | |
| 87 | |
| 88 import dmd.declaration.Match; | |
| 89 | |
| 90 import dmd.backend.Symbol; | |
| 91 import dmd.backend.func_t; | |
| 92 import dmd.backend.Util; | |
| 93 import dmd.backend.glue; | |
| 94 import dmd.backend.SC; | |
| 95 import dmd.backend.F; | |
| 96 import dmd.backend.Cstate; | |
| 97 import dmd.backend.TYM; | |
| 98 import dmd.backend.OPER; | |
| 99 import dmd.backend.TYFL; | |
| 100 import dmd.backend.TYPE; | |
| 101 import dmd.backend.SFL; | |
| 102 import dmd.backend.mTY; | |
| 103 import dmd.backend.FL; | |
| 104 import dmd.backend.REG; | |
| 105 import dmd.backend.block; | |
| 106 import dmd.backend.Blockx; | |
| 107 import dmd.backend.Config; | |
| 108 import dmd.backend.BC; | |
| 109 import dmd.backend.elem; | |
| 110 import dmd.backend.targ_types; | |
| 111 import dmd.backend.mTYman; | |
| 112 import dmd.backend.RTLSYM; | |
| 113 import dmd.backend.LIST; | |
| 114 | |
| 115 import core.stdc.stdio; | |
| 116 import core.stdc.string; | |
| 63 | 117 version (Bug4054) import core.memory; |
| 118 | |
| 119 import dmd.interpret.Util; | |
| 0 | 120 |
| 121 import std.string; | |
| 122 | |
| 123 class FuncDeclaration : Declaration | |
| 124 { | |
| 125 Array fthrows; // Array of Type's of exceptions (not used) | |
| 126 Statement frequire; | |
| 127 Statement fensure; | |
| 128 Statement fbody; | |
| 129 | |
| 130 Identifier outId; // identifier for out statement | |
| 131 VarDeclaration vresult; // variable corresponding to outId | |
| 132 LabelDsymbol returnLabel; // where the return goes | |
| 133 | |
| 134 DsymbolTable localsymtab; // used to prevent symbols in different | |
| 135 // scopes from having the same name | |
| 136 VarDeclaration vthis; // 'this' parameter (member and nested) | |
| 137 VarDeclaration v_arguments; // '_arguments' parameter | |
| 138 version (IN_GCC) { | |
| 139 VarDeclaration v_argptr; // '_argptr' variable | |
| 140 } | |
| 141 Dsymbols parameters; // Array of VarDeclaration's for parameters | |
| 142 DsymbolTable labtab; // statement label symbol table | |
| 143 Declaration overnext; // next in overload list | |
| 144 Loc endloc; // location of closing curly bracket | |
| 145 int vtblIndex = -1; // for member functions, index into vtbl[] | |
| 146 int naked; // !=0 if naked | |
| 147 int inlineAsm; // !=0 if has inline assembler | |
| 148 ILS inlineStatus = ILS.ILSuninitialized; | |
| 149 int inlineNest; // !=0 if nested inline | |
| 150 int cantInterpret; // !=0 if cannot interpret function | |
| 151 int semanticRun; // 1 semantic() run | |
| 152 // 2 semantic2() run | |
| 153 // 3 semantic3() started | |
| 154 // 4 semantic3() done | |
| 155 // 5 toObjFile() run | |
| 156 // this function's frame ptr | |
| 157 ForeachStatement fes; // if foreach body, this is the foreach | |
| 158 int introducing; // !=0 if 'introducing' function | |
| 159 Type tintro; // if !=null, then this is the type | |
| 160 // of the 'introducing' function | |
| 161 // this one is overriding | |
| 162 int inferRetType; // !=0 if return type is to be inferred | |
| 163 | |
| 164 // Things that should really go into Scope | |
| 165 int hasReturnExp; // 1 if there's a return exp; statement | |
| 166 // 2 if there's a throw statement | |
| 167 // 4 if there's an assert(0) | |
| 168 // 8 if there's inline asm | |
| 169 | |
| 170 // Support for NRVO (named return value optimization) | |
| 171 bool nrvo_can = true; // !=0 means we can do it | |
| 172 VarDeclaration nrvo_var; // variable to replace with shidden | |
| 173 Symbol* shidden; // hidden pointer passed to function | |
| 174 | |
| 175 version (DMDV2) { | |
| 176 BUILTIN builtin; // set if this is a known, builtin | |
| 177 // function we can evaluate at compile | |
| 178 // time | |
| 179 | |
| 180 int tookAddressOf; // set if someone took the address of | |
| 181 // this function | |
| 182 Dsymbols closureVars; // local variables in this function | |
| 183 // which are referenced by nested | |
| 184 // functions | |
| 185 } else { | |
| 186 int nestedFrameRef; // !=0 if nested variables referenced | |
| 187 } | |
| 188 | |
| 189 this(Loc loc, Loc endloc, Identifier id, STC storage_class, Type type) | |
| 190 { | |
| 191 super(id); | |
| 192 | |
| 193 //printf("FuncDeclaration(id = '%s', type = %p)\n", id.toChars(), type); | |
| 194 //printf("storage_class = x%x\n", storage_class); | |
| 195 this.storage_class = storage_class; | |
| 196 this.type = type; | |
| 197 this.loc = loc; | |
| 198 this.endloc = endloc; | |
| 199 | |
| 200 /* The type given for "infer the return type" is a TypeFunction with | |
| 201 * null for the return type. | |
| 202 */ | |
| 203 inferRetType = (type && type.nextOf() is null); | |
| 204 | |
| 205 closureVars = new Dsymbols(); | |
| 206 | |
| 207 version (DMDV2) { | |
| 208 builtin = BUILTIN.BUILTINunknown; | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 Dsymbol syntaxCopy(Dsymbol s) | |
| 213 { | |
| 214 FuncDeclaration f; | |
| 215 | |
| 216 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 217 if (s) | |
| 218 f = cast(FuncDeclaration)s; | |
| 219 else | |
| 220 f = new FuncDeclaration(loc, endloc, ident, storage_class, type.syntaxCopy()); | |
| 221 | |
| 222 f.outId = outId; | |
| 223 f.frequire = frequire ? frequire.syntaxCopy() : null; | |
| 224 f.fensure = fensure ? fensure.syntaxCopy() : null; | |
| 225 f.fbody = fbody ? fbody.syntaxCopy() : null; | |
| 226 assert(!fthrows); // deprecated | |
| 227 | |
| 228 return f; | |
| 229 } | |
| 230 | |
| 231 // Do the semantic analysis on the external interface to the function. | |
| 232 void semantic(Scope sc) | |
| 233 { | |
| 234 TypeFunction f; | |
| 235 StructDeclaration sd; | |
| 236 ClassDeclaration cd; | |
| 237 InterfaceDeclaration id; | |
| 238 Dsymbol pd; | |
| 239 | |
| 240 static if (false) { | |
| 241 printf("FuncDeclaration.semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc.linkage); | |
| 242 if (isFuncLiteralDeclaration()) | |
| 243 printf("\tFuncLiteralDeclaration()\n"); | |
| 244 printf("sc.parent = %s, parent = %s\n", sc.parent.toChars(), parent ? parent.toChars() : ""); | |
| 245 printf("type: %p, %s\n", type, type.toChars()); | |
| 246 } | |
| 247 | |
| 248 if (semanticRun && isFuncLiteralDeclaration()) | |
| 249 { | |
| 250 /* Member functions that have return types that are | |
| 251 * forward references can have semantic() run more than | |
| 252 * once on them. | |
| 253 * See test\interface2.d, test20 | |
| 254 */ | |
| 255 return; | |
| 256 } | |
| 257 assert(semanticRun <= 1); | |
| 258 semanticRun = 1; | |
| 259 | |
| 260 storage_class |= sc.stc & ~STC.STCref; | |
| 261 //printf("function storage_class = x%x\n", storage_class); | |
| 262 | |
| 263 if (!originalType) | |
| 264 originalType = type; | |
| 265 if (!type.deco) | |
| 266 { | |
| 267 /* Apply const and invariant storage class | |
| 268 * to the function type | |
| 269 */ | |
| 270 type = type.semantic(loc, sc); | |
| 271 STC stc = storage_class; | |
| 272 if (type.isInvariant()) | |
| 273 stc |= STC.STCimmutable; | |
| 274 if (type.isConst()) | |
| 275 stc |= STC.STCconst; | |
| 276 if (type.isShared() || storage_class & STC.STCsynchronized) | |
| 277 stc |= STC.STCshared; | |
| 278 switch (stc & STC.STC_TYPECTOR) | |
| 279 { | |
| 280 case STC.STCimmutable: | |
| 281 case STC.STCimmutable | STC.STCconst: | |
| 282 case STC.STCimmutable | STC.STCconst | STC.STCshared: | |
| 283 case STC.STCimmutable | STC.STCshared: | |
| 284 // Don't use toInvariant(), as that will do a merge() | |
| 285 type = type.makeInvariant(); | |
| 286 type.deco = type.merge().deco; | |
| 287 break; | |
| 288 | |
| 289 case STC.STCconst: | |
| 290 type = type.makeConst(); | |
| 291 type.deco = type.merge().deco; | |
| 292 break; | |
| 293 | |
| 294 case STC.STCshared | STC.STCconst: | |
| 295 type = type.makeSharedConst(); | |
| 296 type.deco = type.merge().deco; | |
| 297 break; | |
| 298 | |
| 299 case STC.STCshared: | |
| 300 type = type.makeShared(); | |
| 301 type.deco = type.merge().deco; | |
| 302 break; | |
| 303 | |
| 304 case STC.STCundefined: | |
| 305 break; | |
| 306 | |
| 307 default: | |
| 308 assert(0); | |
| 309 } | |
| 310 } | |
| 311 //type.print(); | |
| 312 if (type.ty != TY.Tfunction) | |
| 313 { | |
| 314 error("%s must be a function", toChars()); | |
| 315 return; | |
| 316 } | |
| 317 f = cast(TypeFunction)type; | |
| 318 size_t nparams = Argument.dim(f.parameters); | |
| 319 | |
| 320 linkage = sc.linkage; | |
| 321 // if (!parent) | |
| 322 { | |
| 323 //parent = sc.scopesym; | |
| 324 parent = sc.parent; | |
| 325 } | |
| 326 protection = sc.protection; | |
| 327 Dsymbol parent = toParent(); | |
| 328 | |
| 329 if (storage_class & STC.STCscope) | |
| 330 error("functions cannot be scope"); | |
| 331 | |
| 332 if (isAbstract() && !isVirtual()) | |
| 333 error("non-virtual functions cannot be abstract"); | |
| 334 | |
| 335 if ((f.isConst() || f.isInvariant()) && !isThis()) | |
| 336 error("without 'this' cannot be const/immutable"); | |
| 337 | |
| 338 if (isAbstract() && isFinal()) | |
| 339 error("cannot be both final and abstract"); | |
| 340 static if (false) { | |
| 341 if (isAbstract() && fbody) | |
| 342 error("abstract functions cannot have bodies"); | |
| 343 } | |
| 344 | |
| 345 static if (false) { | |
| 346 if (isStaticConstructor() || isStaticDestructor()) | |
| 347 { | |
| 348 if (!isStatic() || type.nextOf().ty != Tvoid) | |
| 349 error("static constructors / destructors must be static void"); | |
| 350 if (f.arguments && f.arguments.dim) | |
| 351 error("static constructors / destructors must have empty parameter list"); | |
| 352 // BUG: check for invalid storage classes | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 version (IN_GCC) { | |
| 357 AggregateDeclaration ad; | |
| 358 | |
| 359 ad = parent.isAggregateDeclaration(); | |
| 360 if (ad) | |
| 361 ad.methods.push(cast(void*)this); | |
| 362 } | |
| 363 sd = parent.isStructDeclaration(); | |
| 364 if (sd) | |
| 365 { | |
| 366 if (isCtorDeclaration()) | |
| 367 { | |
| 368 return; | |
| 369 } | |
| 370 static if (false) { | |
| 371 // Verify no constructors, destructors, etc. | |
| 372 if (isCtorDeclaration() | |
| 373 //||isDtorDeclaration() | |
| 374 //|| isInvariantDeclaration() | |
| 375 //|| isUnitTestDeclaration() | |
| 376 ) | |
| 377 { | |
| 378 error("special member functions not allowed for %ss", sd.kind()); | |
| 379 } | |
| 380 | |
| 381 if (!sd.inv) | |
| 382 sd.inv = isInvariantDeclaration(); | |
| 383 | |
| 384 if (!sd.aggNew) | |
| 385 sd.aggNew = isNewDeclaration(); | |
| 386 | |
| 387 if (isDelete()) | |
| 388 { | |
| 389 if (sd.aggDelete) | |
| 390 error("multiple delete's for struct %s", sd.toChars()); | |
| 391 sd.aggDelete = cast(DeleteDeclaration)this; | |
| 392 } | |
| 393 } | |
| 394 } | |
| 395 | |
| 396 id = parent.isInterfaceDeclaration(); | |
| 397 if (id) | |
| 398 { | |
| 399 storage_class |= STC.STCabstract; | |
| 400 | |
| 401 if (isCtorDeclaration() || | |
| 402 ///static if (DMDV2) { | |
| 403 isPostBlitDeclaration() || | |
| 404 ///} | |
| 405 isDtorDeclaration() || | |
| 406 isInvariantDeclaration() || | |
| 407 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 408 error("special function not allowed in interface %s", id.toChars()); | |
| 409 if (fbody) | |
| 410 error("function body is not abstract in interface %s", id.toChars()); | |
| 411 } | |
| 412 | |
| 413 /* Template member functions aren't virtual: | |
| 414 * interface TestInterface { void tpl(T)(); } | |
| 415 * and so won't work in interfaces | |
| 416 */ | |
| 417 if ((pd = toParent()) !is null && | |
| 418 pd.isTemplateInstance() && | |
| 419 (pd = toParent2()) !is null && | |
| 420 (id = pd.isInterfaceDeclaration()) !is null) | |
| 421 { | |
| 422 error("template member function not allowed in interface %s", id.toChars()); | |
| 423 } | |
| 424 | |
| 425 cd = parent.isClassDeclaration(); | |
| 426 if (cd) | |
| 427 { int vi; | |
| 428 CtorDeclaration ctor; | |
| 429 DtorDeclaration dtor; | |
| 430 InvariantDeclaration inv; | |
| 431 | |
| 432 if (isCtorDeclaration()) | |
| 433 { | |
| 434 // ctor = cast(CtorDeclaration)this; | |
| 435 // if (!cd.ctor) | |
| 436 // cd.ctor = ctor; | |
| 437 return; | |
| 438 } | |
| 439 | |
| 440 static if (false) { | |
| 441 dtor = isDtorDeclaration(); | |
| 442 if (dtor) | |
| 443 { | |
| 444 if (cd.dtor) | |
| 445 error("multiple destructors for class %s", cd.toChars()); | |
| 446 cd.dtor = dtor; | |
| 447 } | |
| 448 | |
| 449 inv = isInvariantDeclaration(); | |
| 450 if (inv) | |
| 451 { | |
| 452 cd.inv = inv; | |
| 453 } | |
| 454 | |
| 455 if (isNewDeclaration()) | |
| 456 { | |
| 457 if (!cd.aggNew) | |
| 458 cd.aggNew = cast(NewDeclaration)this; | |
| 459 } | |
| 460 | |
| 461 if (isDelete()) | |
| 462 { | |
| 463 if (cd.aggDelete) | |
| 464 error("multiple delete's for class %s", cd.toChars()); | |
| 465 cd.aggDelete = cast(DeleteDeclaration)this; | |
| 466 } | |
| 467 } | |
| 468 | |
| 469 if (storage_class & STC.STCabstract) | |
| 470 cd.isabstract = true; | |
| 471 | |
| 472 // if static function, do not put in vtbl[] | |
| 473 if (!isVirtual()) | |
| 474 { | |
| 475 //printf("\tnot virtual\n"); | |
| 476 goto Ldone; | |
| 477 } | |
| 478 | |
| 479 // Find index of existing function in vtbl[] to override | |
| 480 vi = findVtblIndex(cd.vtbl, cd.baseClass ? cd.baseClass.vtbl.dim : 0); | |
| 481 switch (vi) | |
| 482 { | |
| 483 case -1: | |
| 484 /* Didn't find one, so | |
| 485 * This is an 'introducing' function which gets a new | |
| 486 * slot in the vtbl[]. | |
| 487 */ | |
| 488 | |
| 489 // Verify this doesn't override previous final function | |
| 490 if (cd.baseClass) | |
| 491 { | |
| 492 Dsymbol s = cd.baseClass.search(loc, ident, 0); | |
| 493 if (s) | |
| 494 { | |
| 495 FuncDeclaration ff = s.isFuncDeclaration(); | |
| 496 ff = ff.overloadExactMatch(type); | |
| 497 if (ff && ff.isFinal() && ff.prot() != PROT.PROTprivate) | |
| 498 error("cannot override final function %s", ff.toPrettyChars()); | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 if (isFinal()) | |
| 503 { | |
| 504 if (isOverride()) | |
| 505 error("does not override any function"); | |
| 506 cd.vtblFinal.push(cast(void*)this); | |
| 507 } | |
| 508 else | |
| 509 { | |
| 510 // Append to end of vtbl[] | |
| 511 //printf("\tintroducing function\n"); | |
| 512 introducing = 1; | |
| 513 vi = cd.vtbl.dim; | |
| 514 cd.vtbl.push(cast(void*)this); | |
| 515 vtblIndex = vi; | |
| 516 } | |
| 517 break; | |
| 518 | |
| 519 case -2: // can't determine because of fwd refs | |
| 520 cd.sizeok = 2; // can't finish due to forward reference | |
| 521 return; | |
| 522 | |
| 523 default: | |
| 524 { | |
| 525 FuncDeclaration fdv = cast(FuncDeclaration)cd.vtbl.data[vi]; | |
| 526 // This function is covariant with fdv | |
| 527 if (fdv.isFinal()) | |
| 528 error("cannot override final function %s", fdv.toPrettyChars()); | |
| 529 | |
| 530 version (DMDV2) { | |
| 531 if (!isOverride()) | |
| 532 warning(loc, "overrides base class function %s, but is not marked with 'override'", fdv.toPrettyChars()); | |
| 533 } | |
| 534 | |
| 535 if (fdv.toParent() == parent) | |
| 536 { | |
| 537 // If both are mixins, then error. | |
| 538 // If either is not, the one that is not overrides | |
| 539 // the other. | |
| 540 if (fdv.parent.isClassDeclaration()) | |
| 541 break; | |
| 542 if (!this.parent.isClassDeclaration() | |
| 543 ///static if (!BREAKABI) { | |
| 544 && !isDtorDeclaration() | |
| 545 ///} | |
| 546 ///version (DMDV2) { | |
| 547 && !isPostBlitDeclaration() | |
| 548 ///} | |
| 549 ) | |
| 550 error("multiple overrides of same function"); | |
| 551 } | |
| 552 cd.vtbl.data[vi] = cast(void*)this; | |
| 553 vtblIndex = vi; | |
| 554 | |
| 555 /* This works by whenever this function is called, | |
| 556 * it actually returns tintro, which gets dynamically | |
| 557 * cast to type. But we know that tintro is a base | |
| 558 * of type, so we could optimize it by not doing a | |
| 559 * dynamic cast, but just subtracting the isBaseOf() | |
| 560 * offset if the value is != null. | |
| 561 */ | |
| 562 | |
| 563 if (fdv.tintro) | |
| 564 tintro = fdv.tintro; | |
| 565 else if (!type.equals(fdv.type)) | |
| 566 { | |
| 567 /* Only need to have a tintro if the vptr | |
| 568 * offsets differ | |
| 569 */ | |
| 570 int offset; | |
| 571 if (fdv.type.nextOf().isBaseOf(type.nextOf(), &offset)) | |
| 572 { | |
| 573 tintro = fdv.type; | |
| 574 } | |
| 575 } | |
| 576 break; | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 /* Go through all the interface bases. | |
| 581 * If this function is covariant with any members of those interface | |
| 582 * functions, set the tintro. | |
| 583 */ | |
| 584 for (int i = 0; i < cd.interfaces_dim; i++) | |
| 585 { | |
| 586 BaseClass b = cd.interfaces[i]; | |
| 587 vi = findVtblIndex(b.base.vtbl, b.base.vtbl.dim); | |
| 588 switch (vi) | |
| 589 { | |
| 590 case -1: | |
| 591 break; | |
| 592 | |
| 593 case -2: | |
| 594 cd.sizeok = 2; // can't finish due to forward reference | |
| 595 return; | |
| 596 | |
| 597 default: | |
| 598 { FuncDeclaration fdv = cast(FuncDeclaration)b.base.vtbl.data[vi]; | |
| 599 Type ti = null; | |
| 600 | |
| 601 if (fdv.tintro) | |
| 602 ti = fdv.tintro; | |
| 603 else if (!type.equals(fdv.type)) | |
| 604 { | |
| 605 /* Only need to have a tintro if the vptr | |
| 606 * offsets differ | |
| 607 */ | |
| 608 int offset; | |
| 609 if (fdv.type.nextOf().isBaseOf(type.nextOf(), &offset)) | |
| 610 { | |
| 611 ti = fdv.type; | |
| 612 static if (false) { | |
| 613 if (offset) | |
| 614 ti = fdv.type; | |
| 615 else if (type.nextOf().ty == Tclass) | |
| 616 { | |
| 617 ClassDeclaration cdn = (cast(TypeClass)type.nextOf()).sym; | |
| 618 if (cdn && cdn.sizeok != 1) | |
| 619 ti = fdv.type; | |
| 620 } | |
| 621 } | |
| 622 } | |
| 623 } | |
| 624 if (ti) | |
| 625 { | |
| 626 if (tintro && !tintro.equals(ti)) | |
| 627 { | |
| 628 error("incompatible covariant types %s and %s", tintro.toChars(), ti.toChars()); | |
| 629 } | |
| 630 tintro = ti; | |
| 631 } | |
| 632 goto L2; | |
| 633 } | |
| 634 } | |
| 635 } | |
| 636 | |
| 637 if (introducing && isOverride()) | |
| 638 { | |
| 639 error("does not override any function"); | |
| 640 } | |
| 641 | |
| 642 L2: ; | |
| 643 } | |
| 644 else if (isOverride() && !parent.isTemplateInstance()) | |
| 645 error("override only applies to class member functions"); | |
| 646 | |
| 647 /* Do not allow template instances to add virtual functions | |
| 648 * to a class. | |
| 649 */ | |
| 650 if (isVirtual()) | |
| 651 { | |
| 652 TemplateInstance ti = parent.isTemplateInstance(); | |
| 653 if (ti) | |
| 654 { | |
| 655 // Take care of nested templates | |
| 656 while (1) | |
| 657 { | |
| 658 TemplateInstance ti2 = ti.tempdecl.parent.isTemplateInstance(); | |
| 659 if (!ti2) | |
| 660 break; | |
| 661 ti = ti2; | |
| 662 } | |
| 663 | |
| 664 // If it's a member template | |
| 665 ClassDeclaration cdd = ti.tempdecl.isClassMember(); | |
| 666 if (cdd) | |
| 667 { | |
| 668 error("cannot use template to add virtual function to class '%s'", cdd.toChars()); | |
| 669 } | |
| 670 } | |
| 671 } | |
| 672 | |
| 673 if (isMain()) | |
| 674 { | |
| 675 // Check parameters to see if they are either () or (char[][] args) | |
| 676 switch (nparams) | |
| 677 { | |
| 678 case 0: | |
| 679 break; | |
| 680 | |
| 681 case 1: | |
| 682 { | |
| 683 Argument arg0 = Argument.getNth(f.parameters, 0); | |
| 684 if (arg0.type.ty != TY.Tarray || | |
| 685 arg0.type.nextOf().ty != TY.Tarray || | |
| 686 arg0.type.nextOf().nextOf().ty != TY.Tchar || | |
| 687 arg0.storageClass & (STC.STCout | STC.STCref | STC.STClazy)) | |
| 688 goto Lmainerr; | |
| 689 break; | |
| 690 } | |
| 691 | |
| 692 default: | |
| 693 goto Lmainerr; | |
| 694 } | |
| 695 | |
| 696 if (f.nextOf().ty != TY.Tint32 && f.nextOf().ty != TY.Tvoid) | |
| 697 error("must return int or void, not %s", f.nextOf().toChars()); | |
| 698 if (f.varargs) | |
| 699 { | |
| 700 Lmainerr: | |
| 701 error("parameters must be main() or main(char[][] args)"); | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 if (ident == Id.assign && (sd || cd)) | |
| 706 { // Disallow identity assignment operator. | |
| 707 | |
| 708 // opAssign(...) | |
| 709 if (nparams == 0) | |
| 710 { if (f.varargs == 1) | |
| 711 goto Lassignerr; | |
| 712 } | |
| 713 else | |
| 714 { | |
| 715 Argument arg0 = Argument.getNth(f.parameters, 0); | |
| 716 Type t0 = arg0.type.toBasetype(); | |
| 717 Type tb = sd ? sd.type : cd.type; | |
| 718 if (arg0.type.implicitConvTo(tb) || | |
| 719 (sd && t0.ty == TY.Tpointer && t0.nextOf().implicitConvTo(tb)) | |
| 720 ) | |
| 721 { | |
| 722 if (nparams == 1) | |
| 723 goto Lassignerr; | |
| 724 Argument arg1 = Argument.getNth(f.parameters, 1); | |
| 725 if (arg1.defaultArg) | |
| 726 goto Lassignerr; | |
| 727 } | |
| 728 } | |
| 729 } | |
| 730 | |
| 731 Ldone: | |
| 732 /* Save scope for possible later use (if we need the | |
| 733 * function internals) | |
| 734 */ | |
| 735 scope_ = new Scope(sc); | |
| 736 scope_.setNoFree(); | |
| 737 return; | |
| 738 | |
| 739 Lassignerr: | |
| 740 if (sd) | |
| 741 { | |
| 742 sd.hasIdentityAssign = 1; // don't need to generate it | |
| 743 goto Ldone; | |
| 744 } | |
| 745 error("identity assignment operator overload is illegal"); | |
| 746 } | |
| 747 | |
| 748 void semantic2(Scope sc) | |
| 749 { | |
| 750 } | |
| 751 | |
| 752 // Do the semantic analysis on the internals of the function. | |
| 753 void semantic3(Scope sc) | |
| 754 { | |
| 755 TypeFunction f; | |
| 756 VarDeclaration argptr = null; | |
| 757 VarDeclaration _arguments = null; | |
| 758 | |
| 759 if (!parent) | |
| 760 { | |
| 761 if (global.errors) | |
| 762 return; | |
| 763 //printf("FuncDeclaration.semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
| 764 assert(0); | |
| 765 } | |
| 766 //printf("FuncDeclaration.semantic3('%s.%s', sc = %p, loc = %s)\n", parent.toChars(), toChars(), sc, loc.toChars()); | |
| 767 //fflush(stdout); | |
| 768 //printf("storage class = x%x %x\n", sc.stc, storage_class); | |
| 769 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 770 //printf("\tlinkage = %d\n", sc.linkage); | |
| 771 | |
| 772 //printf(" sc.incontract = %d\n", sc.incontract); | |
| 773 if (semanticRun >= 3) | |
| 774 return; | |
| 775 semanticRun = 3; | |
| 776 | |
| 777 if (!type || type.ty != TY.Tfunction) | |
| 778 return; | |
| 779 f = cast(TypeFunction)(type); | |
| 780 | |
| 781 // Check the 'throws' clause | |
| 782 if (fthrows) | |
| 783 { | |
| 784 for (int i = 0; i < fthrows.dim; i++) | |
| 785 { | |
| 786 Type t = cast(Type)fthrows.data[i]; | |
| 787 | |
| 788 t = t.semantic(loc, sc); | |
| 789 if (!t.isClassHandle()) | |
| 790 error("can only throw classes, not %s", t.toChars()); | |
| 791 } | |
| 792 } | |
| 793 | |
| 794 if (fbody || frequire) | |
| 795 { | |
| 796 /* Symbol table into which we place parameters and nested functions, | |
| 797 * solely to diagnose name collisions. | |
| 798 */ | |
| 799 localsymtab = new DsymbolTable(); | |
| 800 | |
| 801 // Establish function scope | |
| 802 ScopeDsymbol ss = new ScopeDsymbol(); | |
| 803 ss.parent = sc.scopesym; | |
| 804 Scope sc2 = sc.push(ss); | |
| 805 sc2.func = this; | |
| 806 sc2.parent = this; | |
| 807 sc2.callSuper = 0; | |
| 808 sc2.sbreak = null; | |
| 809 sc2.scontinue = null; | |
| 810 sc2.sw = null; | |
| 811 sc2.fes = fes; | |
| 812 sc2.linkage = LINK.LINKd; | |
| 813 sc2.stc &= ~(STC.STCauto | STC.STCscope | STC.STCstatic | STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCfinal | STC.STCtls | STC.STCgshared | STC.STCref); | |
| 814 sc2.protection = PROT.PROTpublic; | |
| 815 sc2.explicitProtection = 0; | |
| 816 sc2.structalign = 8; | |
| 817 sc2.incontract = 0; | |
| 818 sc2.tf = null; | |
| 819 sc2.noctor = 0; | |
| 820 | |
| 821 // Declare 'this' | |
| 822 AggregateDeclaration ad = isThis(); | |
| 823 if (ad) | |
| 824 { VarDeclaration v; | |
| 825 | |
| 826 if (isFuncLiteralDeclaration() && isNested()) | |
| 827 { | |
| 828 error("literals cannot be class members"); | |
| 829 return; | |
| 830 } | |
| 831 else | |
| 832 { | |
| 833 assert(!isNested()); // can't be both member and nested | |
| 834 assert(ad.handle); | |
| 835 Type thandle = ad.handle; | |
| 836 version (STRUCTTHISREF) { | |
| 837 thandle = thandle.addMod(type.mod); | |
| 838 thandle = thandle.addStorageClass(storage_class); | |
| 839 if (isPure()) | |
| 840 thandle = thandle.addMod(MOD.MODconst); | |
| 841 } else { | |
| 842 if (storage_class & STC.STCconst || type.isConst()) | |
| 843 { | |
| 844 assert(0); // BUG: shared not handled | |
| 845 if (thandle.ty == TY.Tclass) | |
| 846 thandle = thandle.constOf(); | |
| 847 else | |
| 848 { assert(thandle.ty == TY.Tpointer); | |
| 849 thandle = thandle.nextOf().constOf().pointerTo(); | |
| 850 } | |
| 851 } | |
| 852 else if (storage_class & STC.STCimmutable || type.isInvariant()) | |
| 853 { | |
| 854 if (thandle.ty == TY.Tclass) | |
| 855 thandle = thandle.invariantOf(); | |
| 856 else | |
| 857 { assert(thandle.ty == TY.Tpointer); | |
| 858 thandle = thandle.nextOf().invariantOf().pointerTo(); | |
| 859 } | |
| 860 } | |
| 861 else if (storage_class & STC.STCshared || type.isShared()) | |
| 862 { | |
| 863 assert(0); // not implemented | |
| 864 } | |
| 865 } | |
| 866 v = new ThisDeclaration(loc, thandle); | |
| 867 v.storage_class |= STC.STCparameter; | |
| 868 version (STRUCTTHISREF) { | |
| 869 if (thandle.ty == TY.Tstruct) | |
| 870 v.storage_class |= STC.STCref; | |
| 871 } | |
| 872 v.semantic(sc2); | |
| 873 if (!sc2.insert(v)) | |
| 874 assert(0); | |
| 875 v.parent = this; | |
| 876 vthis = v; | |
| 877 } | |
| 878 } | |
| 879 else if (isNested()) | |
| 880 { | |
| 881 /* The 'this' for a nested function is the link to the | |
| 882 * enclosing function's stack frame. | |
| 883 * Note that nested functions and member functions are disjoint. | |
| 884 */ | |
| 885 VarDeclaration v = new ThisDeclaration(loc, Type.tvoid.pointerTo()); | |
| 886 v.storage_class |= STC.STCparameter; | |
| 887 v.semantic(sc2); | |
| 888 if (!sc2.insert(v)) | |
| 889 assert(0); | |
| 890 v.parent = this; | |
| 891 vthis = v; | |
| 892 } | |
| 893 | |
| 894 // Declare hidden variable _arguments[] and _argptr | |
| 895 if (f.varargs == 1) | |
| 896 { | |
| 897 version (TARGET_NET) { | |
| 898 varArgs(sc2, f, argptr, _arguments); | |
| 899 } else { | |
| 900 Type t; | |
| 901 | |
| 902 if (f.linkage == LINK.LINKd) | |
| 903 { | |
| 904 // Declare _arguments[] | |
| 905 version (BREAKABI) { | |
| 906 v_arguments = new VarDeclaration(Loc(0), Type.typeinfotypelist.type, Id._arguments_typeinfo, null); | |
| 907 v_arguments.storage_class = STCparameter; | |
| 908 v_arguments.semantic(sc2); | |
| 909 sc2.insert(v_arguments); | |
| 910 v_arguments.parent = this; | |
| 911 | |
| 912 //t = Type.typeinfo.type.constOf().arrayOf(); | |
| 913 t = Type.typeinfo.type.arrayOf(); | |
| 914 _arguments = new VarDeclaration(Loc(0), t, Id._arguments, null); | |
| 915 _arguments.semantic(sc2); | |
| 916 sc2.insert(_arguments); | |
| 917 _arguments.parent = this; | |
| 918 } else { | |
| 919 t = Type.typeinfo.type.arrayOf(); | |
| 920 v_arguments = new VarDeclaration(Loc(0), t, Id._arguments, null); | |
| 921 v_arguments.storage_class = STC.STCparameter | STC.STCin; | |
| 922 v_arguments.semantic(sc2); | |
| 923 sc2.insert(v_arguments); | |
| 924 v_arguments.parent = this; | |
| 925 } | |
| 926 } | |
| 927 if (f.linkage == LINK.LINKd || (parameters && parameters.dim)) | |
| 928 { // Declare _argptr | |
| 929 version (IN_GCC) { | |
| 930 t = d_gcc_builtin_va_list_d_type; | |
| 931 } else { | |
| 932 t = Type.tvoid.pointerTo(); | |
| 933 } | |
| 934 argptr = new VarDeclaration(Loc(0), t, Id._argptr, null); | |
| 935 argptr.semantic(sc2); | |
| 936 sc2.insert(argptr); | |
| 937 argptr.parent = this; | |
| 938 } | |
| 939 } | |
| 940 } | |
| 941 | |
| 942 // Propagate storage class from tuple parameters to their element-parameters. | |
| 943 if (f.parameters) | |
| 944 { | |
| 945 for (size_t i = 0; i < f.parameters.dim; i++) | |
| 946 { Argument arg = cast(Argument)f.parameters.data[i]; | |
| 947 | |
| 948 //printf("[%d] arg.type.ty = %d %s\n", i, arg.type.ty, arg.type.toChars()); | |
| 949 if (arg.type.ty == TY.Ttuple) | |
| 950 { TypeTuple t = cast(TypeTuple)arg.type; | |
| 951 size_t dim = Argument.dim(t.arguments); | |
| 952 for (size_t j = 0; j < dim; j++) | |
| 953 { Argument narg = Argument.getNth(t.arguments, j); | |
| 954 narg.storageClass = arg.storageClass; | |
| 955 } | |
| 956 } | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 /* Declare all the function parameters as variables | |
| 961 * and install them in parameters[] | |
| 962 */ | |
| 963 size_t nparams = Argument.dim(f.parameters); | |
| 964 if (nparams) | |
| 965 { /* parameters[] has all the tuples removed, as the back end | |
| 966 * doesn't know about tuples | |
| 967 */ | |
| 968 parameters = new Dsymbols(); | |
| 969 parameters.reserve(nparams); | |
| 970 for (size_t i = 0; i < nparams; i++) | |
| 971 { | |
| 972 Argument arg = Argument.getNth(f.parameters, i); | |
| 973 Identifier id = arg.ident; | |
| 974 if (!id) | |
| 975 { | |
| 976 /* Generate identifier for un-named parameter, | |
| 977 * because we need it later on. | |
| 978 */ | |
| 979 arg.ident = id = Identifier.generateId("_param_", i); | |
| 980 } | |
| 981 Type vtype = arg.type; | |
| 982 if (isPure()) | |
| 983 vtype = vtype.addMod(MOD.MODconst); | |
| 984 VarDeclaration v = new VarDeclaration(loc, vtype, id, null); | |
| 985 //printf("declaring parameter %s of type %s\n", v.toChars(), v.type.toChars()); | |
| 986 v.storage_class |= STC.STCparameter; | |
| 987 if (f.varargs == 2 && i + 1 == nparams) | |
| 988 v.storage_class |= STC.STCvariadic; | |
| 989 v.storage_class |= arg.storageClass & (STC.STCin | STC.STCout | STC.STCref | STC.STClazy | STC.STCfinal | STC.STC_TYPECTOR | STC.STCnodtor); | |
| 990 v.semantic(sc2); | |
| 991 if (!sc2.insert(v)) | |
| 992 error("parameter %s.%s is already defined", toChars(), v.toChars()); | |
| 993 else | |
| 994 parameters.push(cast(void*)v); | |
| 995 localsymtab.insert(v); | |
| 996 v.parent = this; | |
| 997 } | |
| 998 } | |
| 999 | |
| 1000 // Declare the tuple symbols and put them in the symbol table, | |
| 1001 // but not in parameters[]. | |
| 1002 if (f.parameters) | |
| 1003 { | |
| 1004 for (size_t i = 0; i < f.parameters.dim; i++) | |
| 1005 { Argument arg = cast(Argument)f.parameters.data[i]; | |
| 1006 | |
| 1007 if (!arg.ident) | |
| 1008 continue; // never used, so ignore | |
| 1009 if (arg.type.ty == TY.Ttuple) | |
| 1010 { TypeTuple t = cast(TypeTuple)arg.type; | |
| 1011 size_t dim = Argument.dim(t.arguments); | |
| 1012 Objects exps = new Objects(); | |
| 1013 exps.setDim(dim); | |
| 1014 for (size_t j = 0; j < dim; j++) | |
| 1015 { Argument narg = Argument.getNth(t.arguments, j); | |
| 1016 assert(narg.ident); | |
| 1017 VarDeclaration v = sc2.search(Loc(0), narg.ident, null).isVarDeclaration(); | |
| 1018 assert(v); | |
| 1019 Expression e = new VarExp(v.loc, v); | |
| 1020 exps.data[j] = cast(void*)e; | |
| 1021 } | |
| 1022 assert(arg.ident); | |
| 1023 TupleDeclaration v = new TupleDeclaration(loc, arg.ident, exps); | |
| 1024 //printf("declaring tuple %s\n", v.toChars()); | |
| 1025 v.isexp = 1; | |
| 1026 if (!sc2.insert(v)) | |
| 1027 error("parameter %s.%s is already defined", toChars(), v.toChars()); | |
| 1028 localsymtab.insert(v); | |
| 1029 v.parent = this; | |
| 1030 } | |
| 1031 } | |
| 1032 } | |
| 1033 | |
| 1034 /* Do the semantic analysis on the [in] preconditions and | |
| 1035 * [out] postconditions. | |
| 1036 */ | |
| 1037 sc2.incontract++; | |
| 1038 | |
| 1039 if (frequire) | |
| 1040 { /* frequire is composed of the [in] contracts | |
| 1041 */ | |
| 1042 // BUG: need to error if accessing out parameters | |
| 1043 // BUG: need to treat parameters as const | |
| 1044 // BUG: need to disallow returns and throws | |
| 1045 // BUG: verify that all in and ref parameters are read | |
| 1046 frequire = frequire.semantic(sc2); | |
| 1047 labtab = null; // so body can't refer to labels | |
| 1048 } | |
| 1049 | |
| 1050 if (fensure || addPostInvariant()) | |
| 1051 { /* fensure is composed of the [out] contracts | |
| 1052 */ | |
| 1053 ScopeDsymbol sym = new ScopeDsymbol(); | |
| 1054 sym.parent = sc2.scopesym; | |
| 1055 sc2 = sc2.push(sym); | |
| 1056 | |
| 1057 assert(type.nextOf()); | |
| 1058 if (type.nextOf().ty == TY.Tvoid) | |
| 1059 { | |
| 1060 if (outId) | |
| 1061 error("void functions have no result"); | |
| 1062 } | |
| 1063 else | |
| 1064 { | |
| 1065 if (!outId) | |
| 1066 outId = Id.result; // provide a default | |
| 1067 } | |
| 1068 | |
| 1069 if (outId) | |
| 1070 { // Declare result variable | |
| 1071 VarDeclaration v; | |
| 1072 Loc loc = this.loc; | |
| 1073 | |
| 1074 if (fensure) | |
| 1075 loc = fensure.loc; | |
| 1076 | |
| 1077 v = new VarDeclaration(loc, type.nextOf(), outId, null); | |
| 1078 v.noauto = true; | |
| 1079 version (DMDV2) { | |
| 1080 if (f.isref) | |
| 1081 { | |
| 1082 v.storage_class |= STC.STCref | STC.STCforeach; | |
| 1083 } | |
| 1084 } | |
| 1085 sc2.incontract--; | |
| 1086 v.semantic(sc2); | |
| 1087 sc2.incontract++; | |
| 1088 if (!sc2.insert(v)) | |
| 1089 error("out result %s is already defined", v.toChars()); | |
| 1090 v.parent = this; | |
| 1091 vresult = v; | |
| 1092 | |
| 1093 // vresult gets initialized with the function return value | |
| 1094 // in ReturnStatement.semantic() | |
| 1095 } | |
| 1096 | |
| 1097 // BUG: need to treat parameters as const | |
| 1098 // BUG: need to disallow returns and throws | |
| 1099 if (fensure) | |
| 1100 { fensure = fensure.semantic(sc2); | |
| 1101 labtab = null; // so body can't refer to labels | |
| 1102 } | |
| 1103 | |
| 1104 if (!global.params.useOut) | |
| 1105 { fensure = null; // discard | |
| 1106 vresult = null; | |
| 1107 } | |
| 1108 | |
| 1109 // Postcondition invariant | |
| 1110 if (addPostInvariant()) | |
| 1111 { | |
| 1112 Expression e = null; | |
| 1113 if (isCtorDeclaration()) | |
| 1114 { | |
| 1115 // Call invariant directly only if it exists | |
| 1116 InvariantDeclaration inv = ad.inv; | |
| 1117 ClassDeclaration cd = ad.isClassDeclaration(); | |
| 1118 | |
| 1119 while (!inv && cd) | |
| 1120 { | |
| 1121 cd = cd.baseClass; | |
| 1122 if (!cd) | |
| 1123 break; | |
| 1124 inv = cd.inv; | |
| 1125 } | |
| 1126 if (inv) | |
| 1127 { | |
| 1128 e = new DsymbolExp(Loc(0), inv); | |
| 1129 e = new CallExp(Loc(0), e); | |
| 1130 e = e.semantic(sc2); | |
| 1131 } | |
| 1132 } | |
| 1133 else | |
| 1134 { // Call invariant virtually | |
| 1135 Expression v = new ThisExp(Loc(0)); | |
| 1136 v.type = vthis.type; | |
| 1137 version (STRUCTTHISREF) { | |
| 1138 if (ad.isStructDeclaration()) | |
| 1139 v = v.addressOf(sc); | |
| 1140 } | |
| 1141 e = new AssertExp(Loc(0), v); | |
| 1142 } | |
| 1143 if (e) | |
| 1144 { | |
| 1145 ExpStatement s = new ExpStatement(Loc(0), e); | |
| 1146 if (fensure) | |
| 1147 fensure = new CompoundStatement(Loc(0), s, fensure); | |
| 1148 else | |
| 1149 fensure = s; | |
| 1150 } | |
| 1151 } | |
| 1152 | |
| 1153 if (fensure) | |
| 1154 { returnLabel = new LabelDsymbol(Id.returnLabel); | |
| 1155 LabelStatement ls = new LabelStatement(Loc(0), Id.returnLabel, fensure); | |
| 1156 ls.isReturnLabel = 1; | |
| 1157 returnLabel.statement = ls; | |
| 1158 } | |
| 1159 sc2 = sc2.pop(); | |
| 1160 } | |
| 1161 | |
| 1162 sc2.incontract--; | |
| 1163 | |
| 1164 if (fbody) | |
| 1165 { ClassDeclaration cd = isClassMember(); | |
| 1166 | |
| 1167 /* If this is a class constructor | |
| 1168 */ | |
| 1169 if (isCtorDeclaration() && cd) | |
| 1170 { | |
| 1171 for (int i = 0; i < cd.fields.dim; i++) | |
| 1172 { VarDeclaration v = cast(VarDeclaration)cd.fields.data[i]; | |
| 1173 | |
| 1174 v.ctorinit = 0; | |
| 1175 } | |
| 1176 } | |
| 1177 | |
| 1178 if (inferRetType || f.retStyle() != RET.RETstack) | |
| 1179 nrvo_can = 0; | |
| 1180 | |
| 1181 fbody = fbody.semantic(sc2); | |
| 1182 if (!fbody) | |
| 1183 fbody = new CompoundStatement(Loc(0), new Statements()); | |
| 1184 | |
| 1185 if (inferRetType) | |
| 1186 { // If no return type inferred yet, then infer a void | |
| 1187 if (!type.nextOf()) | |
| 1188 { | |
| 1189 (cast(TypeFunction)type).next = Type.tvoid; | |
| 1190 type = type.semantic(loc, sc); | |
| 1191 } | |
| 1192 f = cast(TypeFunction)type; | |
| 1193 } | |
| 1194 | |
| 1195 if (isStaticCtorDeclaration()) | |
| 1196 { | |
| 1197 /* It's a static constructor. Ensure that all | |
| 1198 * ctor consts were initialized. | |
| 1199 */ | |
| 1200 | |
| 1201 Dsymbol p = toParent(); | |
| 1202 ScopeDsymbol add = p.isScopeDsymbol(); | |
| 1203 if (!add) | |
| 1204 { | |
| 1205 error("static constructor can only be member of struct/class/module, not %s %s", p.kind(), p.toChars()); | |
| 1206 } | |
| 1207 else | |
| 1208 { | |
| 1209 for (int i = 0; i < add.members.dim; i++) | |
| 1210 { Dsymbol s = cast(Dsymbol)add.members.data[i]; | |
| 1211 | |
| 1212 s.checkCtorConstInit(); | |
| 1213 } | |
| 1214 } | |
| 1215 } | |
| 1216 | |
| 1217 if (isCtorDeclaration() && cd) | |
| 1218 { | |
| 1219 //printf("callSuper = x%x\n", sc2.callSuper); | |
| 1220 | |
| 1221 // Verify that all the ctorinit fields got initialized | |
| 1222 if (!(sc2.callSuper & CSX.CSXthis_ctor)) | |
| 1223 { | |
| 1224 for (int i = 0; i < cd.fields.dim; i++) | |
| 1225 { VarDeclaration v = cast(VarDeclaration)cd.fields.data[i]; | |
| 1226 | |
| 1227 if (v.ctorinit == 0 && v.isCtorinit()) | |
| 1228 error("missing initializer for final field %s", v.toChars()); | |
| 1229 } | |
| 1230 } | |
| 1231 | |
| 1232 if (!(sc2.callSuper & CSX.CSXany_ctor) && | |
| 1233 cd.baseClass && cd.baseClass.ctor) | |
| 1234 { | |
| 1235 sc2.callSuper = 0; | |
| 1236 | |
| 1237 // Insert implicit super() at start of fbody | |
| 1238 Expression e1 = new SuperExp(Loc(0)); | |
| 1239 Expression e = new CallExp(Loc(0), e1); | |
| 1240 | |
| 1241 e = e.trySemantic(sc2); | |
| 1242 if (!e) | |
| 1243 error("no match for implicit super() call in constructor"); | |
| 1244 else | |
| 1245 { | |
| 1246 Statement s = new ExpStatement(Loc(0), e); | |
| 1247 fbody = new CompoundStatement(Loc(0), s, fbody); | |
| 1248 } | |
| 1249 } | |
| 1250 } | |
| 1251 else if (fes) | |
| 1252 { // For foreach(){} body, append a return 0; | |
| 1253 Expression e = new IntegerExp(0); | |
| 1254 Statement s = new ReturnStatement(Loc(0), e); | |
| 1255 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1256 assert(!returnLabel); | |
| 1257 } | |
| 1258 else if (!hasReturnExp && type.nextOf().ty != TY.Tvoid) | |
| 1259 error("expected to return a value of type %s", type.nextOf().toChars()); | |
| 1260 else if (!inlineAsm) | |
| 1261 { | |
| 1262 version (DMDV2) { | |
| 1263 BE blockexit = fbody ? fbody.blockExit() : BE.BEfallthru; | |
| 1264 if (f.isnothrow && blockexit & BE.BEthrow) | |
| 1265 error("'%s' is nothrow yet may throw", toChars()); | |
| 1266 | |
| 1267 int offend = blockexit & BE.BEfallthru; | |
| 1268 } | |
| 1269 if (type.nextOf().ty == TY.Tvoid) | |
| 1270 { | |
| 1271 if (offend && isMain()) | |
| 1272 { // Add a return 0; statement | |
| 1273 Statement s = new ReturnStatement(Loc(0), new IntegerExp(0)); | |
| 1274 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1275 } | |
| 1276 } | |
| 1277 else | |
| 1278 { | |
| 1279 if (offend) | |
| 1280 { | |
| 1281 Expression e; | |
| 1282 version (DMDV1) { | |
| 1283 warning(loc, "no return exp; or assert(0); at end of function"); | |
| 1284 } else { | |
| 1285 error("no return exp; or assert(0); at end of function"); | |
| 1286 } | |
| 1287 if (global.params.useAssert && | |
| 1288 !global.params.useInline) | |
| 1289 { /* Add an assert(0, msg); where the missing return | |
| 1290 * should be. | |
| 1291 */ | |
| 1292 e = new AssertExp( | |
| 1293 endloc, | |
| 1294 new IntegerExp(0), | |
| 1295 new StringExp(loc, "missing return expression") | |
| 1296 ); | |
| 1297 } | |
| 1298 else | |
| 1299 e = new HaltExp(endloc); | |
| 1300 | |
| 1301 e = new CommaExp(Loc(0), e, type.nextOf().defaultInit(Loc(0))); | |
| 1302 e = e.semantic(sc2); | |
| 1303 Statement s = new ExpStatement(Loc(0), e); | |
| 1304 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1305 } | |
| 1306 } | |
| 1307 } | |
| 1308 } | |
| 1309 | |
| 1310 { | |
| 1311 Statements a = new Statements(); | |
| 1312 | |
| 1313 // Merge in initialization of 'out' parameters | |
| 1314 if (parameters) | |
| 1315 { for (size_t i = 0; i < parameters.dim; i++) | |
| 1316 { | |
| 1317 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 1318 if (v.storage_class & STC.STCout) | |
| 1319 { | |
| 1320 assert(v.init); | |
| 1321 ExpInitializer ie = v.init.isExpInitializer(); | |
| 1322 assert(ie); | |
| 1323 a.push(cast(void*)new ExpStatement(Loc(0), ie.exp)); | |
| 1324 } | |
| 1325 } | |
| 1326 } | |
| 1327 | |
| 1328 if (argptr) | |
| 1329 { // Initialize _argptr to point past non-variadic arg | |
| 1330 version (IN_GCC) { | |
| 1331 // Handled in FuncDeclaration.toObjFile | |
| 1332 v_argptr = argptr; | |
| 1333 v_argptr.init = new VoidInitializer(loc); | |
| 1334 } else { | |
| 1335 Expression e1; | |
| 1336 Expression e; | |
| 1337 Type t = argptr.type; | |
| 1338 VarDeclaration p; | |
| 1339 uint offset; | |
| 1340 | |
| 1341 e1 = new VarExp(Loc(0), argptr); | |
| 1342 if (parameters && parameters.dim) | |
| 1343 p = cast(VarDeclaration)parameters.data[parameters.dim - 1]; | |
| 1344 else | |
| 1345 p = v_arguments; // last parameter is _arguments[] | |
| 1346 offset = cast(uint)p.type.size(); /// | |
| 1347 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1348 e = new SymOffExp(Loc(0), p, offset); | |
| 1349 e = new AssignExp(Loc(0), e1, e); | |
| 1350 e.type = t; | |
| 1351 a.push(cast(void*)new ExpStatement(Loc(0), e)); | |
| 1352 } | |
| 1353 } | |
| 1354 | |
| 1355 if (_arguments) | |
| 1356 { | |
| 1357 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1358 * _arguments = v_arguments.elements; | |
| 1359 */ | |
| 1360 Expression e = new VarExp(Loc(0), v_arguments); | |
| 1361 e = new DotIdExp(Loc(0), e, Id.elements); | |
| 1362 Expression e1 = new VarExp(Loc(0), _arguments); | |
| 1363 e = new AssignExp(Loc(0), e1, e); | |
| 1364 e.op = TOK.TOKconstruct; | |
| 1365 e = e.semantic(sc2); | |
| 1366 a.push(cast(void*)new ExpStatement(Loc(0), e)); | |
| 1367 } | |
| 1368 | |
| 1369 // Merge contracts together with body into one compound statement | |
| 1370 | |
| 1371 version (_DH) { | |
| 1372 if (frequire && global.params.useIn) | |
| 1373 { frequire.incontract = 1; | |
| 1374 a.push(frequire); | |
| 1375 } | |
| 1376 } else { | |
| 1377 if (frequire && global.params.useIn) | |
| 1378 a.push(cast(void*)frequire); | |
| 1379 } | |
| 1380 | |
| 1381 // Precondition invariant | |
| 1382 if (addPreInvariant()) | |
| 1383 { | |
| 1384 Expression e = null; | |
| 1385 if (isDtorDeclaration()) | |
| 1386 { | |
| 1387 // Call invariant directly only if it exists | |
| 1388 InvariantDeclaration inv = ad.inv; | |
| 1389 ClassDeclaration cd = ad.isClassDeclaration(); | |
| 1390 | |
| 1391 while (!inv && cd) | |
| 1392 { | |
| 1393 cd = cd.baseClass; | |
| 1394 if (!cd) | |
| 1395 break; | |
| 1396 inv = cd.inv; | |
| 1397 } | |
| 1398 if (inv) | |
| 1399 { | |
| 1400 e = new DsymbolExp(Loc(0), inv); | |
| 1401 e = new CallExp(Loc(0), e); | |
| 1402 e = e.semantic(sc2); | |
| 1403 } | |
| 1404 } | |
| 1405 else | |
| 1406 { // Call invariant virtually | |
| 1407 Expression v = new ThisExp(Loc(0)); | |
| 1408 v.type = vthis.type; | |
| 1409 version (STRUCTTHISREF) { | |
| 1410 if (ad.isStructDeclaration()) | |
| 1411 v = v.addressOf(sc); | |
| 1412 } | |
| 1413 Expression se = new StringExp(Loc(0), "null this"); | |
| 1414 se = se.semantic(sc); | |
| 1415 se.type = Type.tchar.arrayOf(); | |
| 1416 e = new AssertExp(loc, v, se); | |
| 1417 } | |
| 1418 if (e) | |
| 1419 { | |
| 1420 ExpStatement s = new ExpStatement(Loc(0), e); | |
| 1421 a.push(cast(void*)s); | |
| 1422 } | |
| 1423 } | |
| 1424 | |
| 1425 if (fbody) | |
| 1426 a.push(cast(void*)fbody); | |
| 1427 | |
| 1428 if (fensure) | |
| 1429 { | |
| 1430 a.push(cast(void*)returnLabel.statement); | |
| 1431 | |
| 1432 if (type.nextOf().ty != TY.Tvoid) | |
| 1433 { | |
| 1434 // Create: return vresult; | |
| 1435 assert(vresult); | |
| 1436 Expression e = new VarExp(Loc(0), vresult); | |
| 1437 if (tintro) | |
| 1438 { e = e.implicitCastTo(sc, tintro.nextOf()); | |
| 1439 e = e.semantic(sc); | |
| 1440 } | |
| 1441 ReturnStatement s = new ReturnStatement(Loc(0), e); | |
| 1442 a.push(cast(void*)s); | |
| 1443 } | |
| 1444 } | |
| 1445 | |
| 1446 fbody = new CompoundStatement(Loc(0), a); | |
| 1447 version (DMDV2) { | |
| 1448 /* Append destructor calls for parameters as finally blocks. | |
| 1449 */ | |
| 1450 if (parameters) | |
| 1451 { for (size_t i = 0; i < parameters.dim; i++) | |
| 1452 { | |
| 1453 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 1454 | |
| 1455 if (v.storage_class & (STC.STCref | STC.STCout)) | |
| 1456 continue; | |
| 1457 | |
| 1458 /* Don't do this for static arrays, since static | |
| 1459 * arrays are called by reference. Remove this | |
| 1460 * when we change them to call by value. | |
| 1461 */ | |
| 1462 if (v.type.toBasetype().ty == TY.Tsarray) | |
| 1463 continue; | |
| 1464 | |
| 1465 Expression e = v.callAutoDtor(sc); | |
| 1466 if (e) | |
| 1467 { Statement s = new ExpStatement(Loc(0), e); | |
| 1468 s = s.semantic(sc); | |
| 1469 if (fbody.blockExit() == BE.BEfallthru) | |
| 1470 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1471 else | |
| 1472 fbody = new TryFinallyStatement(Loc(0), fbody, s); | |
| 1473 } | |
| 1474 } | |
| 1475 } | |
| 1476 } | |
| 1477 | |
| 1478 static if (true) { | |
| 1479 if (isSynchronized()) | |
| 1480 { /* Wrap the entire function body in a synchronized statement | |
| 1481 */ | |
| 1482 ClassDeclaration cd = parent.isClassDeclaration(); | |
| 1483 if (cd) | |
| 1484 { | |
| 1485 ///version (TARGET_WINDOS) { | |
| 1486 if (/*config.flags2 & CFG2.CFG2seh &&*/ // always on for WINDOS | |
| 1487 !isStatic() && !fbody.usesEH()) | |
| 1488 { | |
| 1489 /* The back end uses the "jmonitor" hack for syncing; | |
| 1490 * no need to do the sync at this level. | |
| 1491 */ | |
| 1492 } | |
| 1493 else | |
| 1494 ///} | |
| 1495 { | |
| 1496 Expression vsync; | |
| 1497 if (isStatic()) | |
| 1498 { | |
| 1499 // The monitor is in the ClassInfo | |
| 1500 vsync = new DotIdExp(loc, new DsymbolExp(loc, cd), Id.classinfo_); | |
| 1501 } | |
| 1502 else | |
| 1503 { // 'this' is the monitor | |
| 1504 vsync = new VarExp(loc, vthis); | |
| 1505 } | |
| 1506 fbody = new PeelStatement(fbody); // don't redo semantic() | |
| 1507 fbody = new SynchronizedStatement(loc, vsync, fbody); | |
| 1508 fbody = fbody.semantic(sc2); | |
| 1509 } | |
| 1510 } | |
| 1511 else | |
| 1512 { | |
| 1513 error("synchronized function %s must be a member of a class", toChars()); | |
| 1514 } | |
| 1515 } | |
| 1516 } | |
| 1517 } | |
| 1518 | |
| 1519 sc2.callSuper = 0; | |
| 1520 sc2.pop(); | |
| 1521 } | |
| 1522 semanticRun = 4; | |
| 1523 } | |
| 1524 | |
| 1525 // called from semantic3 | |
| 1526 void varArgs(Scope sc, TypeFunction, ref VarDeclaration, ref VarDeclaration) | |
| 1527 { | |
| 1528 assert(false); | |
| 1529 } | |
| 1530 | |
| 1531 void toCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 1532 { | |
| 1533 assert(false); | |
| 1534 } | |
| 1535 | |
| 1536 void bodyToCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 1537 { | |
| 1538 assert(false); | |
| 1539 } | |
| 1540 | |
| 1541 /**************************************************** | |
| 1542 * Determine if 'this' overrides fd. | |
| 1543 * Return true if it does. | |
| 1544 */ | |
| 1545 bool overrides(FuncDeclaration fd) | |
| 1546 { | |
| 1547 bool result = false; | |
| 1548 | |
| 1549 if (fd.ident == ident) | |
| 1550 { | |
| 1551 int cov = type.covariant(fd.type); | |
| 1552 if (cov) | |
| 1553 { | |
| 1554 ClassDeclaration cd1 = toParent().isClassDeclaration(); | |
| 1555 ClassDeclaration cd2 = fd.toParent().isClassDeclaration(); | |
| 1556 | |
| 1557 if (cd1 && cd2 && cd2.isBaseOf(cd1, null)) | |
| 1558 result = true; | |
| 1559 } | |
| 1560 } | |
| 1561 return result; | |
| 1562 } | |
| 1563 | |
| 1564 /************************************************* | |
| 1565 * Find index of function in vtbl[0..dim] that | |
| 1566 * this function overrides. | |
| 1567 * Returns: | |
| 1568 * -1 didn't find one | |
| 1569 * -2 can't determine because of forward references | |
| 1570 */ | |
| 1571 int findVtblIndex(Array vtbl, int dim) | |
| 1572 { | |
| 1573 for (int vi = 0; vi < dim; vi++) | |
| 1574 { | |
| 1575 FuncDeclaration fdv = (cast(Dsymbol)vtbl.data[vi]).isFuncDeclaration(); | |
| 1576 if (fdv && fdv.ident is ident) | |
| 1577 { | |
| 1578 int cov = type.covariant(fdv.type); | |
| 1579 //printf("\tbaseclass cov = %d\n", cov); | |
| 1580 switch (cov) | |
| 1581 { | |
| 1582 case 0: // types are distinct | |
| 1583 break; | |
| 1584 | |
| 1585 case 1: | |
| 1586 return vi; | |
| 1587 | |
| 1588 case 2: | |
| 1589 //type.print(); | |
| 1590 //fdv.type.print(); | |
| 1591 //printf("%s %s\n", type.deco, fdv.type.deco); | |
| 1592 error("of type %s overrides but is not covariant with %s of type %s", | |
| 1593 type.toChars(), fdv.toPrettyChars(), fdv.type.toChars()); | |
| 1594 break; | |
| 1595 | |
| 1596 case 3: | |
| 1597 return -2; // forward references | |
| 1598 } | |
| 1599 } | |
| 1600 } | |
| 1601 return -1; | |
| 1602 } | |
| 1603 | |
| 1604 /**************************************************** | |
| 1605 * Overload this FuncDeclaration with the new one f. | |
| 1606 * Return !=0 if successful; i.e. no conflict. | |
| 1607 */ | |
| 1608 bool overloadInsert(Dsymbol s) | |
| 1609 { | |
| 1610 FuncDeclaration f; | |
| 1611 AliasDeclaration a; | |
| 1612 | |
| 1613 //writef("FuncDeclaration.overloadInsert(%s)\n", s.toChars()); | |
| 1614 a = s.isAliasDeclaration(); | |
| 1615 if (a) | |
| 1616 { | |
| 1617 if (overnext) | |
| 1618 return overnext.overloadInsert(a); | |
| 1619 | |
| 1620 if (!a.aliassym && a.type.ty != TY.Tident && a.type.ty != TY.Tinstance) | |
| 1621 { | |
| 1622 //writef("\ta = '%s'\n", a.type.toChars()); | |
| 1623 return false; | |
| 1624 } | |
| 1625 overnext = a; | |
| 1626 //printf("\ttrue: no conflict\n"); | |
| 1627 return true; | |
| 1628 } | |
| 1629 f = s.isFuncDeclaration(); | |
| 1630 if (!f) | |
| 1631 return false; | |
| 1632 | |
| 1633 static if (false) { | |
| 1634 /* Disable this check because: | |
| 1635 * const void foo(); | |
| 1636 * semantic() isn't run yet on foo(), so the const hasn't been | |
| 1637 * applied yet. | |
| 1638 */ | |
| 1639 if (type) | |
| 1640 { | |
| 1641 printf("type = %s\n", type.toChars()); | |
| 1642 printf("f.type = %s\n", f.type.toChars()); | |
| 1643 } | |
| 1644 if (type && f.type && // can be null for overloaded constructors | |
| 1645 f.type.covariant(type) && | |
| 1646 f.type.mod == type.mod && | |
| 1647 !isFuncAliasDeclaration()) | |
| 1648 { | |
| 1649 //printf("\tfalse: conflict %s\n", kind()); | |
| 1650 return false; | |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 if (overnext) | |
| 1655 return overnext.overloadInsert(f); | |
| 1656 overnext = f; | |
| 1657 //printf("\ttrue: no conflict\n"); | |
| 1658 return true; | |
| 1659 } | |
| 1660 | |
| 1661 FuncDeclaration overloadExactMatch(Type t) | |
| 1662 { | |
| 1663 Param1 p; | |
| 1664 p.t = t; | |
| 1665 p.f = null; | |
|
17
ddae60498573
Implemented mixin statements, DefaultInitExps, FileInitExps, LineInitExps and __traits.
Robert Clipsham <robert@octarineparrot.com>
parents:
14
diff
changeset
|
1666 overloadApply(this, &p.fp1, &p); |
| 0 | 1667 return p.f; |
| 1668 } | |
| 1669 | |
| 1670 FuncDeclaration overloadResolve(Loc loc, Expression ethis, Expressions arguments, int flags = 0) | |
| 1671 { | |
| 1672 TypeFunction tf; | |
| 1673 Match m; | |
| 1674 | |
| 1675 static if (false) { | |
| 1676 printf("FuncDeclaration.overloadResolve('%s')\n", toChars()); | |
| 1677 if (arguments) | |
| 1678 { | |
| 1679 int i; | |
| 1680 | |
| 1681 for (i = 0; i < arguments.dim; i++) | |
| 1682 { | |
| 1683 Expression arg; | |
| 1684 | |
| 1685 arg = cast(Expression)arguments.data[i]; | |
| 1686 assert(arg.type); | |
| 1687 printf("\t%s: ", arg.toChars()); | |
| 1688 arg.type.print(); | |
| 1689 } | |
| 1690 } | |
| 1691 } | |
| 1692 | |
| 1693 m.last = MATCH.MATCHnomatch; | |
| 1694 overloadResolveX(&m, this, ethis, arguments); | |
| 1695 | |
| 1696 if (m.count == 1) // exactly one match | |
| 1697 { | |
| 1698 return m.lastf; | |
| 1699 } | |
| 1700 else | |
| 1701 { | |
| 1702 scope OutBuffer buf = new OutBuffer(); | |
| 1703 | |
| 1704 buf.writeByte('('); | |
| 1705 if (arguments) | |
| 1706 { | |
| 1707 HdrGenState hgs; | |
| 1708 | |
| 1709 argExpTypesToCBuffer(buf, arguments, &hgs); | |
| 1710 buf.writeByte(')'); | |
| 1711 if (ethis) | |
| 1712 ethis.type.modToBuffer(buf); | |
| 1713 } | |
| 1714 else | |
| 1715 buf.writeByte(')'); | |
| 1716 | |
| 1717 if (m.last == MATCH.MATCHnomatch) | |
| 1718 { | |
| 1719 if (flags & 1) // if do not print error messages | |
| 1720 return null; // no match | |
| 1721 | |
| 1722 tf = cast(TypeFunction)type; | |
| 1723 | |
| 1724 scope OutBuffer buf2 = new OutBuffer(); | |
| 1725 tf.modToBuffer(buf2); | |
| 1726 | |
| 1727 //printf("tf = %s, args = %s\n", tf.deco, ((Expression *)arguments.data[0]).type.deco); | |
| 1728 error(loc, "%s%s is not callable using argument types %s", | |
| 1729 Argument.argsTypesToChars(tf.parameters, tf.varargs), | |
| 1730 buf2.toChars(), | |
| 1731 buf.toChars()); | |
| 1732 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1733 } | |
| 1734 else | |
| 1735 { | |
| 1736 static if (true) { | |
| 1737 TypeFunction t1 = cast(TypeFunction)m.lastf.type; | |
| 1738 TypeFunction t2 = cast(TypeFunction)m.nextf.type; | |
| 1739 | |
| 1740 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1741 buf.toChars(), | |
| 1742 m.lastf.toPrettyChars(), Argument.argsTypesToChars(t1.parameters, t1.varargs), | |
| 1743 m.nextf.toPrettyChars(), Argument.argsTypesToChars(t2.parameters, t2.varargs)); | |
| 1744 } else { | |
| 1745 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1746 m.lastf.type.toChars(), | |
| 1747 m.nextf.type.toChars(), | |
| 1748 m.lastf.toChars()); | |
| 1749 } | |
| 1750 return m.lastf; | |
| 1751 } | |
| 1752 } | |
| 1753 } | |
| 1754 | |
| 1755 /************************************* | |
| 1756 * Determine partial specialization order of 'this' vs g. | |
| 1757 * This is very similar to TemplateDeclaration.leastAsSpecialized(). | |
| 1758 * Returns: | |
| 1759 * match 'this' is at least as specialized as g | |
| 1760 * 0 g is more specialized than 'this' | |
| 1761 */ | |
| 1762 MATCH leastAsSpecialized(FuncDeclaration g) | |
| 1763 { | |
| 1764 version (LOG_LEASTAS) { | |
| 1765 printf("%s.leastAsSpecialized(%s)\n", toChars(), g.toChars()); | |
| 1766 } | |
| 1767 | |
| 1768 /* This works by calling g() with f()'s parameters, and | |
| 1769 * if that is possible, then f() is at least as specialized | |
| 1770 * as g() is. | |
| 1771 */ | |
| 1772 | |
| 1773 TypeFunction tf = cast(TypeFunction)type; | |
| 1774 TypeFunction tg = cast(TypeFunction)g.type; | |
| 1775 size_t nfparams = Argument.dim(tf.parameters); | |
| 1776 size_t ngparams = Argument.dim(tg.parameters); | |
| 1777 MATCH match = MATCHexact; | |
| 1778 | |
| 1779 /* If both functions have a 'this' pointer, and the mods are not | |
| 1780 * the same and g's is not const, then this is less specialized. | |
| 1781 */ | |
| 1782 if (needThis() && g.needThis()) | |
| 1783 { | |
| 1784 if (tf.mod != tg.mod) | |
| 1785 { | |
| 1786 if (tg.mod == MODconst) | |
| 1787 match = MATCHconst; | |
| 1788 else | |
| 1789 return MATCHnomatch; | |
| 1790 } | |
| 1791 } | |
| 1792 | |
| 1793 /* Create a dummy array of arguments out of the parameters to f() | |
| 1794 */ | |
| 1795 scope Expressions args = new Expressions(); | |
| 1796 args.setDim(nfparams); | |
| 1797 for (int u = 0; u < nfparams; u++) | |
| 1798 { | |
| 1799 Argument p = Argument.getNth(tf.parameters, u); | |
| 1800 Expression e; | |
| 1801 if (p.storageClass & (STCref | STCout)) | |
| 1802 { | |
| 1803 e = new IdentifierExp(Loc(0), p.ident); | |
| 1804 e.type = p.type; | |
| 1805 } | |
| 1806 else | |
| 1807 e = p.type.defaultInit(Loc(0)); | |
| 1808 | |
| 1809 args.data[u] = cast(void*)e; | |
| 1810 } | |
| 1811 | |
| 1812 MATCH m = cast(MATCH) tg.callMatch(null, args); | |
| 1813 if (m) | |
| 1814 { | |
| 1815 /* A variadic parameter list is less specialized than a | |
| 1816 * non-variadic one. | |
| 1817 */ | |
| 1818 if (tf.varargs && !tg.varargs) | |
| 1819 goto L1; // less specialized | |
| 1820 | |
| 1821 version (LOG_LEASTAS) { | |
| 1822 printf(" matches %d, so is least as specialized\n", m); | |
| 1823 } | |
| 1824 return m; | |
| 1825 } | |
| 1826 L1: | |
| 1827 version (LOG_LEASTAS) { | |
| 1828 printf(" doesn't match, so is not as specialized\n"); | |
| 1829 } | |
| 1830 return MATCHnomatch; | |
| 1831 } | |
| 1832 | |
| 1833 /******************************** | |
| 1834 * Labels are in a separate scope, one per function. | |
| 1835 */ | |
| 1836 LabelDsymbol searchLabel(Identifier ident) | |
| 1837 { | |
| 1838 Dsymbol s; | |
| 1839 | |
| 1840 if (!labtab) | |
| 1841 labtab = new DsymbolTable(); // guess we need one | |
| 1842 | |
| 1843 s = labtab.lookup(ident); | |
| 1844 if (!s) | |
| 1845 { | |
| 1846 s = new LabelDsymbol(ident); | |
| 1847 labtab.insert(s); | |
| 1848 } | |
| 1849 | |
| 1850 return cast(LabelDsymbol)s; | |
| 1851 } | |
| 1852 | |
| 1853 /**************************************** | |
| 1854 * If non-static member function that has a 'this' pointer, | |
| 1855 * return the aggregate it is a member of. | |
| 1856 * Otherwise, return null. | |
| 1857 */ | |
| 1858 AggregateDeclaration isThis() | |
| 1859 { | |
| 1860 AggregateDeclaration ad = null; | |
| 1861 | |
| 1862 //printf("+FuncDeclaration.isThis() '%s'\n", toChars()); | |
| 1863 if ((storage_class & STC.STCstatic) == 0) | |
| 1864 { | |
| 1865 ad = isMember2(); | |
| 1866 } | |
| 1867 //printf("-FuncDeclaration.isThis() %p\n", ad); | |
| 1868 return ad; | |
| 1869 } | |
| 1870 | |
| 1871 AggregateDeclaration isMember2() | |
| 1872 { | |
| 1873 AggregateDeclaration ad = null; | |
| 1874 | |
| 1875 //printf("+FuncDeclaration.isMember2() '%s'\n", toChars()); | |
| 1876 for (Dsymbol s = this; s; s = s.parent) | |
| 1877 { | |
| 1878 //printf("\ts = '%s', parent = '%s', kind = %s\n", s.toChars(), s.parent.toChars(), s.parent.kind()); | |
| 1879 ad = s.isMember(); | |
| 1880 if (ad) | |
| 1881 { //printf("test4\n"); | |
| 1882 break; | |
| 1883 } | |
| 1884 if (!s.parent || (!s.parent.isTemplateInstance())) | |
| 1885 { //printf("test5\n"); | |
| 1886 break; | |
| 1887 } | |
| 1888 } | |
| 1889 //printf("-FuncDeclaration.isMember2() %p\n", ad); | |
| 1890 return ad; | |
| 1891 } | |
| 1892 | |
| 1893 /***************************************** | |
| 1894 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 1895 * Error if this cannot call fd. | |
| 1896 * Returns: | |
| 1897 * 0 same level | |
| 1898 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 1899 * >0 decrease nesting by number | |
| 1900 */ | |
| 1901 int getLevel(Loc loc, FuncDeclaration fd) // lexical nesting level difference | |
| 1902 { | |
| 1903 int level; | |
| 1904 Dsymbol s; | |
| 1905 Dsymbol fdparent; | |
| 1906 | |
| 1907 //printf("FuncDeclaration.getLevel(fd = '%s')\n", fd.toChars()); | |
| 1908 fdparent = fd.toParent2(); | |
| 1909 if (fdparent == this) | |
| 1910 return -1; | |
| 1911 s = this; | |
| 1912 level = 0; | |
| 1913 while (fd != s && fdparent != s.toParent2()) | |
| 1914 { | |
| 1915 //printf("\ts = '%s'\n", s.toChars()); | |
| 1916 FuncDeclaration thisfd = s.isFuncDeclaration(); | |
| 1917 if (thisfd) | |
| 1918 { | |
| 1919 if (!thisfd.isNested() && !thisfd.vthis) | |
| 1920 goto Lerr; | |
| 1921 } | |
| 1922 else | |
| 1923 { | |
| 1924 AggregateDeclaration thiscd = s.isAggregateDeclaration(); | |
| 1925 if (thiscd) | |
| 1926 { | |
| 1927 if (!thiscd.isNested()) | |
| 1928 goto Lerr; | |
| 1929 } | |
| 1930 else | |
| 1931 goto Lerr; | |
| 1932 } | |
| 1933 | |
| 1934 s = s.toParent2(); | |
| 1935 assert(s); | |
| 1936 level++; | |
| 1937 } | |
| 1938 return level; | |
| 1939 | |
| 1940 Lerr: | |
| 1941 error(loc, "cannot access frame of function %s", fd.toChars()); | |
| 1942 return 1; | |
| 1943 } | |
| 1944 | |
| 1945 void appendExp(Expression e) | |
| 1946 { | |
| 1947 assert(false); | |
| 1948 } | |
| 1949 | |
| 1950 void appendState(Statement s) | |
| 1951 { | |
| 1952 assert(false); | |
| 1953 } | |
| 1954 | |
| 1955 string mangle() | |
| 1956 out (result) | |
| 1957 { | |
| 1958 assert(result.length > 0); | |
| 1959 } | |
| 1960 body | |
| 1961 { | |
| 1962 if (isMain()) { | |
| 1963 return "_Dmain"; | |
| 1964 } | |
| 1965 | |
| 1966 if (isWinMain() || isDllMain() || ident == Id.tls_get_addr) | |
| 1967 return ident.toChars(); | |
| 1968 | |
| 1969 assert(this); | |
| 1970 | |
| 1971 return Declaration.mangle(); | |
| 1972 } | |
| 1973 | |
| 1974 string toPrettyChars() | |
| 1975 { | |
| 1976 if (isMain()) | |
| 1977 return "D main"; | |
| 1978 else | |
| 1979 return Dsymbol.toPrettyChars(); | |
| 1980 } | |
| 1981 | |
| 1982 int isMain() | |
| 1983 { | |
| 1984 return ident is Id.main && linkage != LINK.LINKc && !isMember() && !isNested(); | |
| 1985 } | |
| 1986 | |
| 1987 int isWinMain() | |
| 1988 { | |
| 1989 //printf("FuncDeclaration::isWinMain() %s\n", toChars()); | |
| 1990 static if (false) { | |
| 1991 int x = ident == Id.WinMain && | |
| 1992 linkage != LINK.LINKc && !isMember(); | |
| 1993 printf("%s\n", x ? "yes" : "no"); | |
| 1994 return x; | |
| 1995 } else { | |
| 1996 return ident == Id.WinMain && linkage != LINK.LINKc && !isMember(); | |
| 1997 } | |
| 1998 } | |
| 1999 | |
| 2000 int isDllMain() | |
| 2001 { | |
| 2002 return ident == Id.DllMain && linkage != LINK.LINKc && !isMember(); | |
| 2003 } | |
| 2004 | |
| 2005 /********************************** | |
| 2006 * Determine if function is a builtin one that we can | |
| 2007 * evaluate at compile time. | |
| 2008 */ | |
| 2009 BUILTIN isBuiltin() | |
| 2010 { | |
| 2011 static string FeZe = "FNaNbeZe"; // pure nothrow real function(real) | |
| 2012 | |
| 2013 //printf("FuncDeclaration::isBuiltin() %s\n", toChars()); | |
| 2014 if (builtin == BUILTIN.BUILTINunknown) | |
| 2015 { | |
| 2016 builtin = BUILTIN.BUILTINnot; | |
| 2017 if (parent && parent.isModule()) | |
| 2018 { | |
| 2019 // If it's in the std.math package | |
| 2020 if (parent.ident == Id.math && parent.parent && parent.parent.ident == Id.std && !parent.parent.parent) | |
| 2021 { | |
| 2022 //printf("deco = %s\n", type.deco); | |
| 2023 if (type.deco == FeZe) | |
| 2024 { | |
| 2025 if (ident == Id.sin) | |
| 2026 builtin = BUILTIN.BUILTINsin; | |
| 2027 else if (ident == Id.cos) | |
| 2028 builtin = BUILTIN.BUILTINcos; | |
| 2029 else if (ident == Id.tan) | |
| 2030 builtin = BUILTIN.BUILTINtan; | |
| 2031 else if (ident == Id._sqrt) | |
| 2032 builtin = BUILTIN.BUILTINsqrt; | |
| 2033 else if (ident == Id.fabs) | |
| 2034 builtin = BUILTIN.BUILTINfabs; | |
| 2035 //printf("builtin = %d\n", builtin); | |
| 2036 } | |
| 2037 // if float or double versions | |
| 2038 else if (type.deco == "FNaNbdZd" || type.deco == "FNaNbfZf") | |
| 2039 { | |
| 2040 if (ident == Id._sqrt) | |
| 2041 builtin = BUILTIN.BUILTINsqrt; | |
| 2042 } | |
| 2043 } | |
| 2044 } | |
| 2045 } | |
| 2046 | |
| 2047 return builtin; | |
| 2048 } | |
| 2049 | |
| 2050 bool isExport() | |
| 2051 { | |
| 2052 return protection == PROT.PROTexport; | |
| 2053 } | |
| 2054 | |
| 2055 bool isImportedSymbol() | |
| 2056 { | |
| 2057 //printf("isImportedSymbol()\n"); | |
| 2058 //printf("protection = %d\n", protection); | |
| 2059 return (protection == PROT.PROTexport) && !fbody; | |
| 2060 } | |
| 2061 | |
| 2062 bool isAbstract() | |
| 2063 { | |
| 2064 return (storage_class & STC.STCabstract) != 0; | |
| 2065 } | |
| 2066 | |
| 2067 bool isCodeseg() | |
| 2068 { | |
| 2069 assert(false); | |
| 2070 } | |
| 2071 | |
| 2072 bool isOverloadable() | |
| 2073 { | |
| 63 | 2074 return 1; // functions can be overloaded |
| 0 | 2075 } |
| 2076 | |
| 2077 bool isPure() | |
| 2078 { | |
| 2079 //printf("FuncDeclaration::isPure() '%s'\n", toChars()); | |
| 2080 assert(type.ty == TY.Tfunction); | |
| 2081 return (cast(TypeFunction)this.type).ispure; | |
| 2082 } | |
| 2083 | |
| 2084 bool isNested() | |
| 2085 { | |
| 2086 //if (!toParent()) | |
| 2087 //printf("FuncDeclaration.isNested('%s') parent=%p\n", toChars(), parent); | |
| 2088 //printf("\ttoParent2() = '%s'\n", toParent2().toChars()); | |
| 2089 return ((storage_class & STC.STCstatic) == 0) && | |
| 2090 (toParent2().isFuncDeclaration() !is null); | |
| 2091 } | |
| 2092 | |
| 2093 bool needThis() | |
| 2094 { | |
| 2095 //printf("FuncDeclaration.needThis() '%s'\n", toChars()); | |
| 2096 bool needThis = isThis() !is null; | |
| 2097 | |
| 2098 //printf("\t%d\n", i); | |
| 2099 if (!needThis) { | |
| 2100 if (auto fa = isFuncAliasDeclaration()) { | |
| 2101 needThis = fa.funcalias.needThis(); | |
| 2102 } | |
| 2103 } | |
| 2104 | |
| 2105 return needThis; | |
| 2106 } | |
| 2107 | |
| 2108 bool isVirtual() | |
| 2109 { | |
| 2110 static if (false) { | |
| 2111 printf("FuncDeclaration.isVirtual(%s)\n", toChars()); | |
| 2112 printf("isMember:%p isStatic:%d private:%d ctor:%d !Dlinkage:%d\n", isMember(), isStatic(), protection == PROT.PROTprivate, isCtorDeclaration(), linkage != LINK.LINKd); | |
| 2113 printf("result is %d\n", | |
| 2114 isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && toParent().isClassDeclaration()); | |
| 2115 } | |
| 2116 return isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && toParent().isClassDeclaration(); | |
| 2117 } | |
| 2118 | |
| 2119 int isFinal() | |
| 2120 { | |
| 2121 ClassDeclaration cd; | |
| 2122 static if (false) { | |
| 2123 printf("FuncDeclaration.isFinal(%s)\n", toChars()); | |
| 2124 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROT.PROTprivate, isCtorDeclaration(), linkage != LINK.LINKd); | |
| 2125 printf("result is %d\n", | |
| 2126 isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && (cd = toParent().isClassDeclaration()) !is null && cd.storage_class & STC.STCfinal); | |
| 2127 } | |
| 2128 return isMember() && (Declaration.isFinal() || ((cd = toParent().isClassDeclaration()) !is null && cd.storage_class & STC.STCfinal)); | |
| 2129 } | |
| 2130 | |
| 2131 bool addPreInvariant() | |
| 2132 { | |
| 2133 AggregateDeclaration ad = isThis(); | |
| 2134 return (ad && | |
| 2135 //ad.isClassDeclaration() && | |
| 2136 global.params.useInvariants && | |
| 2137 (protection == PROT.PROTpublic || protection == PROT.PROTexport) && | |
| 2138 !naked && | |
| 2139 ident !is Id.cpctor); | |
| 2140 } | |
| 2141 | |
| 2142 bool addPostInvariant() | |
| 2143 { | |
| 2144 AggregateDeclaration ad = isThis(); | |
| 2145 return (ad && ad.inv && | |
| 2146 //ad.isClassDeclaration() && | |
| 2147 global.params.useInvariants && | |
| 2148 (protection == PROT.PROTpublic || protection == PROT.PROTexport) && | |
| 2149 !naked && | |
| 2150 ident !is Id.cpctor); | |
| 2151 } | |
| 2152 | |
| 63 | 2153 /************************************* |
| 2154 * Attempt to interpret a function given the arguments. | |
| 2155 * Input: | |
| 2156 * istate state for calling function (null if none) | |
| 2157 * arguments function arguments | |
| 2158 * thisarg 'this', if a needThis() function, null if not. | |
| 2159 * | |
| 2160 * Return result expression if successful, null if not. | |
| 2161 */ | |
| 2162 Expression interpret(InterState istate, Expressions arguments, Expression thisarg = null) | |
| 0 | 2163 { |
| 63 | 2164 version (LOG) { |
| 2165 printf("\n********\nFuncDeclaration.interpret(istate = %p) %s\n", istate, toChars()); | |
| 2166 printf("cantInterpret = %d, semanticRun = %d\n", cantInterpret, semanticRun); | |
| 2167 } | |
| 2168 if (global.errors) | |
| 2169 return null; | |
| 2170 if (ident == Id.aaLen) | |
| 2171 return interpret_aaLen(istate, arguments); | |
| 2172 else if (ident == Id.aaKeys) | |
| 2173 return interpret_aaKeys(istate, arguments); | |
| 2174 else if (ident == Id.aaValues) | |
| 2175 return interpret_aaValues(istate, arguments); | |
| 2176 | |
| 2177 if (cantInterpret || semanticRun == 3) | |
| 2178 return null; | |
| 2179 | |
| 2180 if (!fbody) | |
| 2181 { | |
| 2182 cantInterpret = 1; | |
| 2183 return null; | |
| 2184 } | |
| 2185 | |
| 2186 if (semanticRun < 3 && scope_) | |
| 2187 { | |
| 2188 semantic3(scope_); | |
| 2189 if (global.errors) // if errors compiling this function | |
| 2190 return null; | |
| 2191 } | |
| 2192 if (semanticRun < 4) | |
| 2193 return null; | |
| 2194 | |
| 2195 Type tb = type.toBasetype(); | |
| 2196 assert(tb.ty == Tfunction); | |
| 2197 TypeFunction tf = cast(TypeFunction)tb; | |
| 2198 Type tret = tf.next.toBasetype(); | |
| 2199 if (tf.varargs) | |
| 2200 { | |
| 2201 cantInterpret = 1; | |
| 2202 error("Variadic functions are not yet implemented in CTFE"); | |
| 2203 return null; | |
| 2204 } | |
| 2205 | |
| 2206 // Ensure there are no lazy parameters | |
| 2207 if (tf.parameters) | |
| 2208 { | |
| 2209 size_t dim = Argument.dim(tf.parameters); | |
| 2210 for (size_t i = 0; i < dim; i++) | |
| 2211 { | |
| 2212 Argument arg = Argument.getNth(tf.parameters, i); | |
| 2213 if (arg.storageClass & STClazy) | |
| 2214 { | |
| 2215 cantInterpret = 1; | |
| 2216 return null; | |
| 2217 } | |
| 2218 } | |
| 2219 } | |
| 2220 | |
| 2221 scope InterState istatex = new InterState(); | |
| 2222 istatex.caller = istate; | |
| 2223 istatex.fd = this; | |
| 2224 istatex.localThis = thisarg; | |
| 2225 | |
| 2226 scope Expressions vsave = new Expressions(); // place to save previous parameter values | |
| 2227 size_t dim = 0; | |
| 2228 if (needThis() && !thisarg) | |
| 2229 { | |
| 2230 cantInterpret = 1; | |
| 2231 // error, no this. Prevent segfault. | |
| 2232 error("need 'this' to access member %s", toChars()); | |
| 2233 return null; | |
| 2234 } | |
| 2235 if (arguments) | |
| 2236 { | |
| 2237 dim = arguments.dim; | |
| 2238 assert(!dim || (parameters && (parameters.dim == dim))); | |
| 2239 vsave.setDim(dim); | |
| 2240 | |
| 2241 /* Evaluate all the arguments to the function, | |
| 2242 * store the results in eargs[] | |
| 2243 */ | |
| 2244 scope Expressions eargs = new Expressions(); | |
| 2245 eargs.setDim(dim); | |
| 2246 | |
| 2247 for (size_t i = 0; i < dim; i++) | |
| 2248 { | |
| 2249 Expression earg = cast(Expression)arguments.data[i]; | |
| 2250 Argument arg = Argument.getNth(tf.parameters, i); | |
| 2251 | |
| 2252 if (arg.storageClass & (STCout | STCref)) | |
| 2253 { | |
| 2254 } | |
| 2255 else | |
| 2256 { /* Value parameters | |
| 2257 */ | |
| 2258 Type ta = arg.type.toBasetype(); | |
| 2259 if (ta.ty == Tsarray && earg.op == TOKaddress) | |
| 2260 { | |
| 2261 /* Static arrays are passed by a simple pointer. | |
| 2262 * Skip past this to get at the actual arg. | |
| 2263 */ | |
| 2264 earg = (cast(AddrExp)earg).e1; | |
| 2265 } | |
| 2266 earg = earg.interpret(istate ? istate : istatex); | |
| 2267 if (earg is EXP_CANT_INTERPRET) | |
| 2268 { | |
| 2269 cantInterpret = 1; | |
| 2270 return null; | |
| 2271 } | |
| 2272 } | |
| 2273 eargs.data[i] = cast(void*)earg; | |
| 2274 } | |
| 2275 | |
| 2276 for (size_t i = 0; i < dim; i++) | |
| 2277 { | |
| 2278 Expression earg = cast(Expression)eargs.data[i]; | |
| 2279 Argument arg = Argument.getNth(tf.parameters, i); | |
| 2280 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 2281 vsave.data[i] = cast(void*)v.value; | |
| 2282 version (LOG) { | |
| 2283 printf("arg[%d] = %s\n", i, earg.toChars()); | |
| 2284 } | |
| 2285 if (arg.storageClass & (STCout | STCref) && earg.op==TOKvar) | |
| 2286 { | |
| 2287 /* Bind out or ref parameter to the corresponding | |
| 2288 * variable v2 | |
| 2289 */ | |
| 2290 if (!istate) | |
| 2291 { | |
| 2292 cantInterpret = 1; | |
| 2293 error("%s cannot be by passed by reference at compile time", earg.toChars()); | |
| 2294 return null; // can't bind to non-interpreted vars | |
| 2295 } | |
| 2296 // We need to chase down all of the the passed parameters until | |
| 2297 // we find something that isn't a TOKvar, then create a variable | |
| 2298 // containg that expression. | |
| 2299 VarDeclaration v2; | |
| 2300 while (1) | |
| 2301 { | |
| 2302 VarExp ve = cast(VarExp)earg; | |
| 2303 v2 = ve.var.isVarDeclaration(); | |
| 2304 if (!v2) | |
| 2305 { | |
| 2306 cantInterpret = 1; | |
| 2307 return null; | |
| 2308 } | |
| 2309 if (!v2.value || v2.value.op != TOKvar) | |
| 2310 break; | |
| 2311 if ((cast(VarExp)v2.value).var.isSymbolDeclaration()) | |
| 2312 { | |
| 2313 // This can happen if v is a struct initialized to | |
| 2314 // 0 using an __initZ SymbolDeclaration from | |
| 2315 // TypeStruct.defaultInit() | |
| 2316 break; // eg default-initialized variable | |
| 2317 } | |
| 2318 earg = v2.value; | |
| 2319 } | |
| 2320 | |
| 2321 v.value = new VarExp(earg.loc, v2); | |
| 2322 | |
| 2323 /* Don't restore the value of v2 upon function return | |
| 2324 */ | |
| 2325 assert(istate); | |
| 2326 for (size_t j = 0; j < istate.vars.dim; j++) | |
| 2327 { | |
| 2328 VarDeclaration vd = cast(VarDeclaration)istate.vars.data[j]; | |
| 2329 if (vd == v2) | |
| 2330 { | |
| 2331 istate.vars.data[j] = null; | |
| 2332 break; | |
| 2333 } | |
| 2334 } | |
| 2335 } | |
| 2336 else | |
| 2337 { | |
| 2338 // Value parameters and non-trivial references | |
| 2339 v.value = earg; | |
| 2340 } | |
| 2341 version (LOG) { | |
| 2342 printf("interpreted arg[%d] = %s\n", i, earg.toChars()); | |
| 2343 } | |
| 2344 } | |
| 2345 } | |
| 2346 // Don't restore the value of 'this' upon function return | |
| 2347 if (needThis() && thisarg.op==TOKvar) { | |
| 2348 VarDeclaration thisvar = (cast(VarExp)thisarg).var.isVarDeclaration(); | |
| 2349 for (size_t i = 0; i < istate.vars.dim; i++) | |
| 2350 { | |
| 2351 VarDeclaration v = cast(VarDeclaration)istate.vars.data[i]; | |
| 2352 if (v == thisvar) | |
| 2353 { | |
| 2354 istate.vars.data[i] = null; | |
| 2355 break; | |
| 2356 } | |
| 2357 } | |
| 2358 } | |
| 2359 | |
| 2360 /* Save the values of the local variables used | |
| 2361 */ | |
| 2362 scope Expressions valueSaves = new Expressions(); | |
| 2363 if (istate && !isNested()) | |
| 2364 { | |
| 2365 //printf("saving local variables...\n"); | |
| 2366 valueSaves.setDim(istate.vars.dim); | |
| 2367 for (size_t i = 0; i < istate.vars.dim; i++) | |
| 2368 { | |
| 2369 VarDeclaration v = cast(VarDeclaration)istate.vars.data[i]; | |
| 2370 if (v) | |
| 2371 { | |
| 2372 //printf("\tsaving [%d] %s = %s\n", i, v.toChars(), v.value ? v.value.toChars() : ""); | |
| 2373 valueSaves.data[i] = cast(void*)v.value; | |
| 2374 v.value = null; | |
| 2375 } | |
| 2376 } | |
| 2377 } | |
| 2378 | |
| 2379 Expression e = null; | |
| 2380 while (1) | |
| 2381 { | |
| 2382 e = fbody.interpret(istatex); | |
| 2383 if (e is EXP_CANT_INTERPRET) | |
| 2384 { | |
| 2385 version (LOG) { | |
| 2386 printf("function body failed to interpret\n"); | |
| 2387 } | |
| 2388 e = null; | |
| 2389 } | |
| 2390 | |
| 2391 /* This is how we deal with a recursive statement AST | |
| 2392 * that has arbitrary goto statements in it. | |
| 2393 * Bubble up a 'result' which is the target of the goto | |
| 2394 * statement, then go recursively down the AST looking | |
| 2395 * for that statement, then execute starting there. | |
| 2396 */ | |
| 2397 if (e is EXP_GOTO_INTERPRET) | |
| 2398 { | |
| 2399 istatex.start = istatex.gotoTarget; // set starting statement | |
| 2400 istatex.gotoTarget = null; | |
| 2401 } | |
| 2402 else | |
| 2403 break; | |
| 2404 } | |
| 2405 /* Restore the parameter values | |
| 2406 */ | |
| 2407 for (size_t i = 0; i < dim; i++) | |
| 2408 { | |
| 2409 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 2410 v.value = cast(Expression)vsave.data[i]; | |
| 2411 } | |
| 2412 | |
| 2413 if (istate && !isNested()) | |
| 2414 { | |
| 2415 /* Restore the variable values | |
| 2416 */ | |
| 2417 //printf("restoring local variables...\n"); | |
| 2418 for (size_t i = 0; i < istate.vars.dim; i++) | |
| 2419 { | |
| 2420 VarDeclaration v = cast(VarDeclaration)istate.vars.data[i]; | |
| 2421 if (v) | |
| 2422 { | |
| 2423 v.value = cast(Expression)valueSaves.data[i]; | |
| 2424 //printf("\trestoring [%d] %s = %s\n", i, v.toChars(), v.value ? v.value.toChars() : ""); | |
| 2425 } | |
| 2426 } | |
| 2427 } | |
| 2428 return e; | |
| 0 | 2429 } |
| 2430 | |
| 2431 void inlineScan() | |
| 2432 { | |
| 2433 InlineScanState iss; | |
| 2434 | |
| 2435 version (LOG) { | |
| 2436 printf("FuncDeclaration.inlineScan('%s')\n", toChars()); | |
| 2437 } | |
| 2438 ///memset(&iss, 0, sizeof(iss)); | |
| 2439 iss.fd = this; | |
| 2440 if (fbody) | |
| 2441 { | |
| 2442 inlineNest++; | |
| 2443 fbody = fbody.inlineScan(&iss); | |
| 2444 inlineNest--; | |
| 2445 } | |
| 2446 } | |
| 2447 | |
| 2448 int canInline(int hasthis, int hdrscan = 0) | |
| 2449 { | |
| 2450 int cost; | |
| 2451 | |
| 2452 // #define CANINLINE_LOG 0 | |
| 2453 | |
| 2454 version (CANINLINE_LOG) { | |
| 2455 printf("FuncDeclaration.canInline(hasthis = %d, '%s')\n", hasthis, toChars()); | |
| 2456 } | |
| 2457 | |
| 2458 if (needThis() && !hasthis) | |
| 2459 return 0; | |
| 2460 | |
| 2461 if (inlineNest || (semanticRun < 3 && !hdrscan)) | |
| 2462 { | |
| 2463 version (CANINLINE_LOG) { | |
| 2464 printf("\t1: no, inlineNest = %d, semanticRun = %d\n", inlineNest, semanticRun); | |
| 2465 } | |
| 2466 return 0; | |
| 2467 } | |
| 2468 | |
| 2469 switch (inlineStatus) | |
| 2470 { | |
| 2471 case ILS.ILSyes: | |
| 2472 version (CANINLINE_LOG) { | |
| 2473 printf("\t1: yes %s\n", toChars()); | |
| 2474 } | |
| 2475 return 1; | |
| 2476 | |
| 2477 case ILS.ILSno: | |
| 2478 version (CANINLINE_LOG) { | |
| 2479 printf("\t1: no %s\n", toChars()); | |
| 2480 } | |
| 2481 return 0; | |
| 2482 | |
| 2483 case ILS.ILSuninitialized: | |
| 2484 break; | |
| 2485 | |
| 2486 default: | |
| 2487 assert(0); | |
| 2488 } | |
| 2489 | |
| 2490 if (type) | |
| 2491 { | |
| 2492 assert(type.ty == Tfunction); | |
| 2493 TypeFunction tf = cast(TypeFunction)type; | |
| 2494 if (tf.varargs == 1) // no variadic parameter lists | |
| 2495 goto Lno; | |
| 2496 | |
| 2497 /* Don't inline a function that returns non-void, but has | |
| 2498 * no return expression. | |
| 2499 */ | |
| 2500 if (tf.next && tf.next.ty != Tvoid && | |
| 2501 !(hasReturnExp & 1) && | |
| 2502 !hdrscan) | |
| 2503 goto Lno; | |
| 2504 } | |
| 2505 else | |
| 2506 { | |
| 2507 CtorDeclaration ctor = isCtorDeclaration(); | |
| 2508 if (ctor && ctor.varargs == 1) | |
| 2509 goto Lno; | |
| 2510 } | |
| 2511 | |
| 2512 if ( | |
| 2513 !fbody || | |
| 2514 !hdrscan && | |
| 2515 ( | |
| 2516 /// static if (false) { | |
| 2517 /// isCtorDeclaration() || // cannot because need to convert: | |
| 2518 /// // return; | |
| 2519 /// // to: | |
| 2520 /// // return this; | |
| 2521 /// } | |
| 2522 isSynchronized() || | |
| 2523 isImportedSymbol() || | |
| 2524 /// version (DMDV2) { | |
| 2525 closureVars.dim || // no nested references to this frame | |
| 2526 /// } else { | |
| 2527 /// nestedFrameRef || // no nested references to this frame | |
| 2528 /// } | |
| 2529 (isVirtual() && !isFinal()) | |
| 2530 )) | |
| 2531 { | |
| 2532 goto Lno; | |
| 2533 } | |
| 2534 | |
| 2535 /* If any parameters are Tsarray's (which are passed by reference) | |
| 2536 * or out parameters (also passed by reference), don't do inlining. | |
| 2537 */ | |
| 2538 if (parameters) | |
| 2539 { | |
| 2540 for (int i = 0; i < parameters.dim; i++) | |
| 2541 { | |
| 2542 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 2543 if (v.isOut() || v.isRef() || v.type.toBasetype().ty == Tsarray) | |
| 2544 goto Lno; | |
| 2545 } | |
| 2546 } | |
| 2547 | |
| 2548 InlineCostState ics; | |
| 2549 ///memset(&ics, 0, sizeof(ics)); | |
| 2550 ics.hasthis = hasthis; | |
| 2551 ics.fd = this; | |
| 2552 ics.hdrscan = hdrscan; | |
| 2553 cost = fbody.inlineCost(&ics); | |
| 2554 version (CANINLINE_LOG) { | |
| 2555 printf("cost = %d\n", cost); | |
| 2556 } | |
| 2557 if (cost >= COST_MAX) | |
| 2558 goto Lno; | |
| 2559 | |
| 2560 if (!hdrscan) // Don't scan recursively for header content scan | |
| 2561 inlineScan(); | |
| 2562 | |
| 2563 Lyes: | |
| 2564 if (!hdrscan) // Don't modify inlineStatus for header content scan | |
| 2565 inlineStatus = ILS.ILSyes; | |
| 2566 version (CANINLINE_LOG) { | |
| 2567 printf("\t2: yes %s\n", toChars()); | |
| 2568 } | |
| 2569 return 1; | |
| 2570 | |
| 2571 Lno: | |
| 2572 if (!hdrscan) // Don't modify inlineStatus for header content scan | |
| 2573 inlineStatus = ILS.ILSno; | |
| 2574 version (CANINLINE_LOG) { | |
| 2575 printf("\t2: no %s\n", toChars()); | |
| 2576 } | |
| 2577 return 0; | |
| 2578 } | |
| 2579 | |
| 2580 Expression doInline(InlineScanState* iss, Expression ethis, Array arguments) | |
| 2581 { | |
| 2582 InlineDoState ids = new InlineDoState(); | |
| 2583 DeclarationExp de; | |
| 2584 Expression e = null; | |
| 2585 | |
| 2586 version (LOG) { | |
| 2587 printf("FuncDeclaration.doInline('%s')\n", toChars()); | |
| 2588 } | |
| 2589 | |
| 2590 ///memset(&ids, 0, sizeof(ids)); | |
| 2591 ids.parent = iss.fd; | |
| 2592 | |
| 2593 // Set up vthis | |
| 2594 if (ethis) | |
| 2595 { | |
| 2596 VarDeclaration vthis; | |
| 2597 ExpInitializer ei; | |
| 2598 VarExp ve; | |
| 2599 | |
| 2600 version (STRUCTTHISREF) { | |
| 2601 if (ethis.type.ty == Tpointer) | |
| 2602 { | |
| 2603 Type t = ethis.type.nextOf(); | |
| 2604 ethis = new PtrExp(ethis.loc, ethis); | |
| 2605 ethis.type = t; | |
| 2606 } | |
| 2607 ei = new ExpInitializer(ethis.loc, ethis); | |
| 2608 | |
| 2609 vthis = new VarDeclaration(ethis.loc, ethis.type, Id.This, ei); | |
| 2610 if (ethis.type.ty != Tclass) | |
| 2611 vthis.storage_class = STCref; | |
| 2612 else | |
| 2613 vthis.storage_class = STCin; | |
| 2614 } else { | |
| 2615 if (ethis.type.ty != Tclass && ethis.type.ty != Tpointer) | |
| 2616 { | |
| 2617 ethis = ethis.addressOf(null); | |
| 2618 } | |
| 2619 | |
| 2620 ei = new ExpInitializer(ethis.loc, ethis); | |
| 2621 | |
| 2622 vthis = new VarDeclaration(ethis.loc, ethis.type, Id.This, ei); | |
| 2623 vthis.storage_class = STCin; | |
| 2624 } | |
| 2625 vthis.linkage = LINKd; | |
| 2626 vthis.parent = iss.fd; | |
| 2627 | |
| 2628 ve = new VarExp(vthis.loc, vthis); | |
| 2629 ve.type = vthis.type; | |
| 2630 | |
| 2631 ei.exp = new AssignExp(vthis.loc, ve, ethis); | |
| 2632 ei.exp.type = ve.type; | |
| 2633 version (STRUCTTHISREF) { | |
| 2634 if (ethis.type.ty != Tclass) | |
| 2635 { | |
| 2636 /* This is a reference initialization, not a simple assignment. | |
| 2637 */ | |
| 2638 ei.exp.op = TOKconstruct; | |
| 2639 } | |
| 2640 } | |
| 2641 | |
| 2642 ids.vthis = vthis; | |
| 2643 } | |
| 2644 | |
| 2645 // Set up parameters | |
| 2646 if (ethis) | |
| 2647 { | |
| 2648 e = new DeclarationExp(Loc(0), ids.vthis); | |
| 2649 e.type = Type.tvoid; | |
| 2650 } | |
| 2651 | |
| 2652 if (arguments && arguments.dim) | |
| 2653 { | |
| 2654 assert(parameters.dim == arguments.dim); | |
| 2655 | |
| 2656 for (int i = 0; i < arguments.dim; i++) | |
| 2657 { | |
| 2658 VarDeclaration vfrom = cast(VarDeclaration)parameters.data[i]; | |
| 2659 VarDeclaration vto; | |
| 2660 Expression arg = cast(Expression)arguments.data[i]; | |
| 2661 ExpInitializer ei; | |
| 2662 VarExp ve; | |
| 2663 | |
| 2664 ei = new ExpInitializer(arg.loc, arg); | |
| 2665 | |
| 2666 vto = new VarDeclaration(vfrom.loc, vfrom.type, vfrom.ident, ei); | |
| 2667 vto.storage_class |= vfrom.storage_class & (STCin | STCout | STClazy | STCref); | |
| 2668 vto.linkage = vfrom.linkage; | |
| 2669 vto.parent = iss.fd; | |
| 2670 //printf("vto = '%s', vto.storage_class = x%x\n", vto.toChars(), vto.storage_class); | |
| 2671 //printf("vto.parent = '%s'\n", iss.fd.toChars()); | |
| 2672 | |
| 2673 ve = new VarExp(vto.loc, vto); | |
| 2674 //ve.type = vto.type; | |
| 2675 ve.type = arg.type; | |
| 2676 | |
| 2677 ei.exp = new AssignExp(vto.loc, ve, arg); | |
| 2678 ei.exp.type = ve.type; | |
| 2679 //ve.type.print(); | |
| 2680 //arg.type.print(); | |
| 2681 //ei.exp.print(); | |
| 2682 | |
| 2683 ids.from.push(cast(void*)vfrom); | |
| 2684 ids.to.push(cast(void*)vto); | |
| 2685 | |
| 2686 de = new DeclarationExp(Loc(0), vto); | |
| 2687 de.type = Type.tvoid; | |
| 2688 | |
| 2689 e = Expression.combine(e, de); | |
| 2690 } | |
| 2691 } | |
| 2692 | |
| 2693 inlineNest++; | |
| 2694 Expression eb = fbody.doInline(ids); | |
| 2695 inlineNest--; | |
| 2696 //eb.type.print(); | |
| 2697 //eb.print(); | |
| 2698 //eb.dump(0); | |
| 2699 return Expression.combine(e, eb); | |
| 2700 } | |
| 2701 | |
| 2702 string kind() | |
| 2703 { | |
| 2704 return "function"; | |
| 2705 } | |
| 2706 | |
| 2707 void toDocBuffer(OutBuffer buf) | |
| 2708 { | |
| 2709 assert(false); | |
| 2710 } | |
| 2711 | |
| 2712 FuncDeclaration isUnique() | |
| 2713 { | |
| 2714 assert(false); | |
| 2715 } | |
| 2716 | |
| 2717 /******************************* | |
| 2718 * Look at all the variables in this function that are referenced | |
| 2719 * by nested functions, and determine if a closure needs to be | |
| 2720 * created for them. | |
| 2721 */ | |
| 2722 bool needsClosure() | |
| 2723 { | |
| 2724 /* Need a closure for all the closureVars[] if any of the | |
| 2725 * closureVars[] are accessed by a | |
| 2726 * function that escapes the scope of this function. | |
| 2727 * We take the conservative approach and decide that any function that: | |
| 2728 * 1) is a virtual function | |
| 2729 * 2) has its address taken | |
| 2730 * 3) has a parent that escapes | |
| 2731 * | |
| 2732 * Note that since a non-virtual function can be called by | |
| 2733 * a virtual one, if that non-virtual function accesses a closure | |
| 2734 * var, the closure still has to be taken. Hence, we check for isThis() | |
| 2735 * instead of isVirtual(). (thanks to David Friedman) | |
| 2736 */ | |
| 2737 | |
| 2738 //printf("FuncDeclaration.needsClosure() %s\n", toChars()); | |
| 2739 for (int i = 0; i < closureVars.dim; i++) | |
| 2740 { | |
| 2741 VarDeclaration v = cast(VarDeclaration)closureVars.data[i]; | |
| 2742 assert(v.isVarDeclaration()); | |
| 2743 //printf("\tv = %s\n", v.toChars()); | |
| 2744 | |
| 2745 for (int j = 0; j < v.nestedrefs.dim; j++) | |
| 2746 { FuncDeclaration f = cast(FuncDeclaration)v.nestedrefs.data[j]; | |
| 2747 assert(f != this); | |
| 2748 | |
| 2749 //printf("\t\tf = %s, %d, %p, %d\n", f.toChars(), f.isVirtual(), f.isThis(), f.tookAddressOf); | |
| 2750 if (f.isThis() || f.tookAddressOf) | |
| 2751 goto Lyes; // assume f escapes this function's scope | |
| 2752 | |
| 2753 // Look to see if any parents of f that are below this escape | |
| 2754 for (Dsymbol s = f.parent; s && s !is this; s = s.parent) | |
| 2755 { | |
| 2756 f = s.isFuncDeclaration(); | |
| 2757 if (f && (f.isThis() || f.tookAddressOf)) { | |
| 2758 goto Lyes; | |
| 2759 } | |
| 2760 } | |
| 2761 } | |
| 2762 } | |
| 2763 return false; | |
| 2764 | |
| 2765 Lyes: | |
| 2766 //printf("\tneeds closure\n"); | |
| 2767 return true; | |
| 2768 } | |
| 2769 | |
| 2770 static FuncDeclaration genCfunc(Type treturn, string name) | |
| 2771 { | |
| 2772 return genCfunc(treturn, Lexer.idPool(name)); | |
| 2773 } | |
| 2774 | |
| 2775 /********************************** | |
| 2776 * Generate a FuncDeclaration for a runtime library function. | |
| 2777 */ | |
| 2778 static FuncDeclaration genCfunc(Type treturn, Identifier id) | |
| 2779 { | |
| 2780 FuncDeclaration fd; | |
| 2781 TypeFunction tf; | |
| 2782 Dsymbol s; | |
| 2783 static DsymbolTable st = null; | |
| 2784 | |
| 2785 //printf("genCfunc(name = '%s')\n", id.toChars()); | |
| 2786 //printf("treturn\n\t"); treturn.print(); | |
| 2787 | |
| 2788 // See if already in table | |
| 2789 if (!st) | |
| 2790 st = new DsymbolTable(); | |
| 2791 | |
| 2792 s = st.lookup(id); | |
| 2793 if (s) | |
| 2794 { | |
| 2795 fd = s.isFuncDeclaration(); | |
| 2796 assert(fd); | |
| 2797 assert(fd.type.nextOf().equals(treturn)); | |
| 2798 } | |
| 2799 else | |
| 2800 { | |
| 2801 tf = new TypeFunction(null, treturn, 0, LINK.LINKc); | |
| 2802 fd = new FuncDeclaration(Loc(0), Loc(0), id, STCstatic, tf); | |
| 2803 fd.protection = PROT.PROTpublic; | |
| 2804 fd.linkage = LINK.LINKc; | |
| 2805 | |
| 2806 st.insert(fd); | |
| 2807 } | |
| 2808 return fd; | |
| 2809 } | |
| 2810 | |
| 2811 Symbol* toSymbol() | |
| 2812 { | |
| 2813 if (!csym) | |
| 2814 { | |
| 2815 Symbol* s; | |
| 2816 TYPE* t; | |
| 2817 string id; | |
| 2818 | |
| 2819 static if (false) { | |
| 2820 id = ident.toChars(); | |
| 2821 } else { | |
| 2822 id = mangle(); | |
| 2823 } | |
| 2824 //writef("FuncDeclaration.toSymbol(%s %s)\n", kind(), toChars()); | |
| 2825 //writef("\tid = '%s'\n", id); | |
| 2826 //writef("\ttype = %s\n", type.toChars()); | |
| 2827 s = symbol_calloc(toStringz(id)); | |
| 2828 slist_add(s); | |
| 2829 | |
| 2830 { | |
| 2831 s.prettyIdent = toStringz(toPrettyChars()); | |
| 2832 s.Sclass = SC.SCglobal; | |
| 2833 symbol_func(s); | |
| 2834 func_t* f = s.Sfunc; | |
| 2835 if (isVirtual()) | |
| 2836 f.Fflags |= F.Fvirtual; | |
| 2837 else if (isMember2()) | |
| 2838 f.Fflags |= F.Fstatic; | |
| 2839 f.Fstartline.Slinnum = loc.linnum; | |
| 2840 f.Fstartline.Sfilename = cast(char*)toStringz(loc.filename); | |
| 2841 if (endloc.linnum) | |
| 2842 { | |
| 2843 f.Fendline.Slinnum = endloc.linnum; | |
| 2844 f.Fendline.Sfilename = cast(char*)toStringz(endloc.filename); | |
| 2845 } | |
| 2846 else | |
| 2847 { | |
| 2848 f.Fendline.Slinnum = loc.linnum; | |
| 2849 f.Fendline.Sfilename = cast(char*)toStringz(loc.filename); | |
| 2850 } | |
| 2851 t = type.toCtype(); | |
| 2852 } | |
| 2853 | |
| 2854 mangle_t msave = t.Tmangle; | |
| 2855 if (isMain()) | |
| 2856 { | |
| 2857 t.Tty = TYM.TYnfunc; | |
| 2858 t.Tmangle = mTYman.mTYman_c; | |
| 2859 } | |
| 2860 else | |
| 2861 { | |
| 2862 switch (linkage) | |
| 2863 { | |
| 2864 case LINK.LINKwindows: | |
| 2865 t.Tmangle = mTYman.mTYman_std; | |
| 2866 break; | |
| 2867 | |
| 2868 case LINK.LINKpascal: | |
| 2869 t.Tty = TYM.TYnpfunc; | |
| 2870 t.Tmangle = mTYman.mTYman_pas; | |
| 2871 break; | |
| 2872 | |
| 2873 case LINK.LINKc: | |
| 2874 t.Tmangle = mTYman.mTYman_c; | |
| 2875 break; | |
| 2876 | |
| 2877 case LINK.LINKd: | |
| 2878 t.Tmangle = mTYman.mTYman_d; | |
| 2879 break; | |
| 2880 | |
| 2881 case LINK.LINKcpp: | |
| 2882 { t.Tmangle = mTYman.mTYman_cpp; | |
| 2883 version (TARGET_WINDOS) { | |
| 2884 if (isThis()) | |
| 2885 t.Tty = TYM.TYmfunc; | |
| 2886 } | |
| 2887 s.Sflags |= SFL.SFLpublic; | |
| 2888 Dsymbol parent = toParent(); | |
| 2889 ClassDeclaration cd = parent.isClassDeclaration(); | |
| 2890 if (cd) | |
| 2891 { | |
| 2892 .type* tt = cd.type.toCtype(); | |
| 2893 s.Sscope = tt.Tnext.Ttag; | |
| 2894 } | |
| 2895 break; | |
| 2896 } | |
| 2897 default: | |
| 2898 writef("linkage = %d\n", linkage); | |
| 2899 assert(0); | |
| 2900 } | |
| 2901 } | |
| 2902 if (msave) | |
| 2903 assert(msave == t.Tmangle); | |
| 2904 //printf("Tty = %x, mangle = x%x\n", t.Tty, t.Tmangle); | |
| 2905 t.Tcount++; | |
| 2906 s.Stype = t; | |
| 2907 //s.Sfielddef = this; | |
| 2908 | |
| 2909 csym = s; | |
| 2910 } | |
| 2911 return csym; | |
| 2912 } | |
| 2913 | |
| 2914 Symbol* toThunkSymbol(int offset) // thunk version | |
| 2915 { | |
| 2916 Symbol *sthunk; | |
| 2917 | |
| 2918 toSymbol(); | |
| 2919 | |
| 2920 static if (false) { | |
| 2921 char *id; | |
| 2922 char *n; | |
| 2923 type *t; | |
| 2924 | |
| 2925 n = sym.Sident; | |
| 63 | 2926 version (Bug4054) { |
| 2927 id = cast(char*) GC.malloc(8 + 5 + strlen(n) + 1); | |
| 2928 } else { | |
| 2929 id = cast(char*) alloca(8 + 5 + strlen(n) + 1); | |
| 2930 } | |
| 0 | 2931 sprintf(id, "_thunk%d__%s", offset, n); |
| 2932 s = symbol_calloc(id); | |
| 2933 slist_add(s); | |
| 2934 s.Stype = csym.Stype; | |
| 2935 s.Stype.Tcount++; | |
| 2936 } | |
| 2937 sthunk = symbol_generate(SCstatic, csym.Stype); | |
| 2938 sthunk.Sflags |= SFLimplem; | |
| 2939 cod3_thunk(sthunk, csym, 0, TYnptr, -offset, -1, 0); | |
| 2940 return sthunk; | |
| 2941 } | |
| 2942 | |
| 2943 void toObjFile(int multiobj) // compile to .obj file | |
| 2944 { | |
| 2945 Symbol* s; | |
| 2946 func_t* f; | |
| 2947 Symbol* senter; | |
| 2948 Symbol* sexit; | |
| 2949 | |
| 2950 FuncDeclaration func = this; | |
| 2951 ClassDeclaration cd = func.parent.isClassDeclaration(); | |
| 2952 int reverse; | |
| 2953 int i; | |
| 2954 int has_arguments; | |
| 2955 | |
| 2956 //printf("FuncDeclaration.toObjFile(%p, %s.%s)\n", func, parent.toChars(), func.toChars()); | |
| 2957 static if (false) { | |
| 2958 //printf("line = %d\n",func.getWhere() / LINEINC); | |
| 2959 EEcontext ee = env.getEEcontext(); | |
| 2960 if (ee.EEcompile == 2) | |
| 2961 { | |
| 2962 if (ee.EElinnum < (func.getWhere() / LINEINC) || | |
| 2963 ee.EElinnum > (func.endwhere / LINEINC) | |
| 2964 ) | |
| 2965 return; // don't compile this function | |
| 2966 ee.EEfunc = func.toSymbol(); | |
| 2967 } | |
| 2968 } | |
| 2969 | |
| 2970 if (multiobj && !isStaticDtorDeclaration() && !isStaticCtorDeclaration()) | |
| 2971 { | |
| 2972 obj_append(this); | |
| 2973 return; | |
| 2974 } | |
| 2975 | |
| 2976 if (semanticRun >= 5) // if toObjFile() already run | |
| 2977 return; | |
| 2978 | |
| 2979 semanticRun = 5; | |
| 2980 | |
| 2981 if (!func.fbody) | |
| 2982 { | |
| 2983 return; | |
| 2984 } | |
| 2985 | |
| 2986 if (func.isUnitTestDeclaration() && !global.params.useUnitTests) | |
| 2987 return; | |
| 2988 | |
| 2989 if (global.params.verbose) | |
| 2990 writef("function %s\n",func.toChars()); | |
| 2991 | |
| 2992 s = func.toSymbol(); | |
| 2993 f = s.Sfunc; | |
| 2994 | |
| 2995 version (TARGET_OSX) { | |
| 2996 s.Sclass = SC.SCcomdat; | |
| 2997 } else { | |
| 2998 s.Sclass = SC.SCglobal; | |
| 2999 } | |
| 3000 | |
| 3001 for (Dsymbol p = parent; p; p = p.parent) | |
| 3002 { | |
| 3003 if (p.isTemplateInstance()) | |
| 3004 { | |
| 3005 s.Sclass = SC.SCcomdat; | |
| 3006 break; | |
| 3007 } | |
| 3008 } | |
| 3009 | |
| 3010 if (isNested()) | |
| 3011 { | |
| 3012 // if (!(config.flags3 & CFG3pic)) | |
| 3013 // s.Sclass = SCstatic; | |
| 3014 f.Fflags3 |= F3.Fnested; | |
| 3015 } | |
| 3016 else | |
| 3017 { | |
| 3018 const(char)* libname = (global.params.symdebug) ? global.params.debuglibname : global.params.defaultlibname; | |
| 3019 | |
| 3020 // Pull in RTL startup code | |
| 3021 if (func.isMain()) | |
| 3022 { objextdef("_main"); | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
17
diff
changeset
|
3023 version (POSIX) { ///TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS |
| 0 | 3024 obj_ehsections(); // initialize exception handling sections |
| 3025 } else { | |
| 3026 objextdef("__acrtused_con"); | |
| 3027 } | |
| 3028 obj_includelib(libname); | |
| 3029 s.Sclass = SC.SCglobal; | |
| 3030 } | |
| 3031 else if (strcmp(s.Sident.ptr, "main".ptr) == 0 && linkage == LINK.LINKc) | |
| 3032 s.Sclass = SC.SCglobal; | |
| 3033 | |
| 3034 else if (func.isWinMain()) | |
| 3035 { | |
| 3036 objextdef("__acrtused"); | |
| 3037 obj_includelib(libname); | |
| 3038 s.Sclass = SC.SCglobal; | |
| 3039 } | |
| 3040 | |
| 3041 // Pull in RTL startup code | |
| 3042 else if (func.isDllMain()) | |
| 3043 { | |
| 3044 objextdef("__acrtused_dll"); | |
| 3045 obj_includelib(libname); | |
| 3046 s.Sclass = SC.SCglobal; | |
| 3047 } | |
| 3048 } | |
| 3049 | |
| 3050 cstate.CSpsymtab = &f.Flocsym; | |
| 3051 | |
| 3052 // Find module m for this function | |
| 3053 Module m = null; | |
| 3054 for (Dsymbol p = parent; p; p = p.parent) | |
| 3055 { | |
| 3056 m = p.isModule(); | |
| 3057 if (m) | |
| 3058 break; | |
| 3059 } | |
| 3060 | |
| 3061 IRState irs = IRState(m, func); | |
| 3062 Array deferToObj = new Array(); // write these to OBJ file later | |
| 3063 irs.deferToObj = deferToObj; | |
| 3064 | |
| 3065 TypeFunction tf; | |
| 3066 RET retmethod; | |
| 3067 Symbol* shidden = null; | |
| 3068 Symbol* sthis = null; | |
| 3069 tym_t tyf; | |
| 3070 | |
| 3071 tyf = tybasic(s.Stype.Tty); | |
| 3072 //printf("linkage = %d, tyf = x%x\n", linkage, tyf); | |
| 3073 reverse = tyrevfunc(s.Stype.Tty); | |
| 3074 | |
| 3075 assert(func.type.ty == TY.Tfunction); | |
| 3076 tf = cast(TypeFunction)(func.type); | |
| 3077 has_arguments = (tf.linkage == LINK.LINKd) && (tf.varargs == 1); | |
| 3078 retmethod = tf.retStyle(); | |
| 3079 if (retmethod == RET.RETstack) | |
| 3080 { | |
| 3081 // If function returns a struct, put a pointer to that | |
| 3082 // as the first argument | |
| 3083 .type* thidden = tf.next.pointerTo().toCtype(); | |
| 3084 char hiddenparam[5+4+1]; | |
| 3085 static int hiddenparami; // how many we've generated so far | |
| 3086 | |
| 3087 sprintf(hiddenparam.ptr, "__HID%d".ptr, ++hiddenparami); | |
| 3088 shidden = symbol_name(hiddenparam.ptr, SC.SCparameter, thidden); | |
| 3089 shidden.Sflags |= SFL.SFLtrue | SFL.SFLfree; | |
| 3090 | |
| 3091 version (DMDV1) { | |
| 3092 bool nestedref = func.nrvo_can && func.nrvo_var && func.nrvo_var.nestedref; | |
| 3093 } else { | |
| 3094 bool nestedref = func.nrvo_can && func.nrvo_var && (func.nrvo_var.nestedrefs.dim != 0); | |
| 3095 } | |
| 3096 if (nestedref) { | |
| 3097 type_setcv(&shidden.Stype, shidden.Stype.Tty | mTY.mTYvolatile); | |
| 3098 } | |
| 3099 | |
| 3100 irs.shidden = shidden; | |
| 3101 this.shidden = shidden; | |
| 3102 } | |
| 3103 | |
| 3104 if (vthis) | |
| 3105 { | |
| 3106 assert(!vthis.csym); | |
| 3107 sthis = vthis.toSymbol(); | |
| 3108 irs.sthis = sthis; | |
| 3109 if (!(f.Fflags3 & F3.Fnested)) | |
| 3110 f.Fflags3 |= F3.Fmember; | |
| 3111 } | |
| 3112 | |
| 3113 Symbol** params; | |
| 3114 uint pi; | |
| 3115 | |
| 3116 // Estimate number of parameters, pi | |
| 3117 pi = (v_arguments !is null); | |
| 3118 if (parameters) | |
| 3119 pi += parameters.dim; | |
| 3120 | |
| 3121 // Allow extra 2 for sthis and shidden | |
|
14
2cc604139636
Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
3122 version (Bug4054) |
|
2cc604139636
Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
3123 params = cast(Symbol**)GC.malloc((pi + 2) * (Symbol*).sizeof); |
|
2cc604139636
Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
3124 else |
| 0 | 3125 params = cast(Symbol**)alloca((pi + 2) * (Symbol*).sizeof); |
| 3126 | |
| 3127 // Get the actual number of parameters, pi, and fill in the params[] | |
| 3128 pi = 0; | |
| 3129 if (v_arguments) | |
| 3130 { | |
| 3131 params[pi] = v_arguments.toSymbol(); | |
| 3132 pi += 1; | |
| 3133 } | |
| 3134 if (parameters) | |
| 3135 { | |
| 3136 for (i = 0; i < parameters.dim; i++) | |
| 3137 { | |
| 3138 VarDeclaration v = cast(VarDeclaration)parameters.data[i]; | |
| 3139 debug { | |
| 3140 if (v.csym) | |
| 3141 writef("parameter '%s'\n", v.toChars()); | |
| 3142 } | |
| 3143 assert(!v.csym); | |
| 3144 params[pi + i] = v.toSymbol(); | |
| 3145 } | |
| 3146 pi += i; | |
| 3147 } | |
| 3148 | |
| 3149 if (reverse) | |
| 3150 { | |
| 3151 // Reverse params[] entries | |
| 3152 for (i = 0; i < pi/2; i++) | |
| 3153 { | |
| 3154 Symbol* sptmp = params[i]; | |
| 3155 params[i] = params[pi - 1 - i]; | |
| 3156 params[pi - 1 - i] = sptmp; | |
| 3157 } | |
| 3158 } | |
| 3159 | |
| 3160 if (shidden) | |
| 3161 { | |
| 3162 static if (false) { | |
| 3163 // shidden becomes last parameter | |
| 3164 params[pi] = shidden; | |
| 3165 } else { | |
| 3166 // shidden becomes first parameter | |
| 3167 memmove(params + 1, params, pi * (*params).sizeof); | |
| 3168 params[0] = shidden; | |
| 3169 } | |
| 3170 pi++; | |
| 3171 } | |
| 3172 | |
| 3173 | |
| 3174 if (sthis) | |
| 3175 { | |
| 3176 static if (false) { | |
| 3177 // sthis becomes last parameter | |
| 3178 params[pi] = sthis; | |
| 3179 } else { | |
| 3180 // sthis becomes first parameter | |
| 3181 memmove(params + 1, params, pi * (*params).sizeof); | |
| 3182 params[0] = sthis; | |
| 3183 } | |
| 3184 pi++; | |
| 3185 } | |
| 3186 | |
| 3187 if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) && | |
| 3188 linkage != LINK.LINKd && shidden && sthis) | |
| 3189 { | |
| 3190 /* swap shidden and sthis | |
| 3191 */ | |
| 3192 Symbol* sp = params[0]; | |
| 3193 params[0] = params[1]; | |
| 3194 params[1] = sp; | |
| 3195 } | |
| 3196 | |
| 3197 for (i = 0; i < pi; i++) | |
| 3198 { | |
| 3199 Symbol *sp = params[i]; | |
| 3200 sp.Sclass = SC.SCparameter; | |
| 3201 sp.Sflags &= ~SFL.SFLspill; | |
| 3202 sp.Sfl = FL.FLpara; | |
| 3203 symbol_add(sp); | |
| 3204 } | |
| 3205 | |
| 3206 // First parameter goes in register | |
| 3207 if (pi) | |
| 3208 { | |
| 3209 Symbol* sp = params[0]; | |
| 3210 if ((tyf == TYM.TYjfunc || tyf == TYM.TYmfunc) && type_jparam(sp.Stype)) | |
| 3211 { | |
| 3212 sp.Sclass = SC.SCfastpar; | |
| 3213 sp.Spreg = (tyf == TYM.TYjfunc) ? REG.AX : REG.CX; | |
| 3214 sp.Sfl = FL.FLauto; | |
| 3215 //printf("'%s' is SCfastpar\n",sp.Sident); | |
| 3216 } | |
| 3217 } | |
| 3218 | |
| 3219 if (func.fbody) | |
| 3220 { | |
| 3221 block* b; | |
| 3222 Blockx bx; | |
| 3223 Statement sbody; | |
| 3224 | |
| 3225 localgot = null; | |
| 3226 | |
| 3227 sbody = func.fbody; | |
| 3228 ///memset(&bx, 0, (bx).sizeof); | |
| 3229 bx.startblock = block_calloc(); | |
| 3230 bx.curblock = bx.startblock; | |
| 3231 bx.funcsym = s; | |
| 3232 bx.scope_index = -1; | |
| 3233 bx.classdec = cd; | |
| 3234 bx.member = func; | |
| 3235 bx.module_ = getModule(); | |
| 3236 irs.blx = &bx; | |
| 3237 | |
| 3238 buildClosure(&irs); | |
| 3239 | |
| 3240 static if (false) { | |
| 3241 if (func.isSynchronized()) | |
| 3242 { | |
| 3243 if (cd) | |
| 3244 { | |
| 3245 elem *esync; | |
| 3246 if (func.isStatic()) | |
| 3247 { // monitor is in ClassInfo | |
| 3248 esync = el_ptr(cd.toSymbol()); | |
| 3249 } | |
| 3250 else | |
| 3251 { // 'this' is the monitor | |
| 3252 esync = el_var(sthis); | |
| 3253 } | |
| 3254 | |
| 3255 if (func.isStatic() || sbody.usesEH() || | |
| 3256 !(config.flags2 & CFG2.CFG2seh)) | |
| 3257 { // BUG: what if frequire or fensure uses EH? | |
| 3258 | |
| 3259 sbody = new SynchronizedStatement(func.loc, esync, sbody); | |
| 3260 } | |
| 3261 else | |
| 3262 { | |
| 3263 version (TARGET_WINDOS) { | |
| 3264 if (config.flags2 & CFG2.CFG2seh) | |
| 3265 { | |
| 3266 /* The "jmonitor" uses an optimized exception handling frame | |
| 3267 * which is a little shorter than the more general EH frame. | |
| 3268 * It isn't strictly necessary. | |
| 3269 */ | |
| 3270 s.Sfunc.Fflags3 |= Fjmonitor; | |
| 3271 } | |
| 3272 } | |
| 3273 el_free(esync); | |
| 3274 } | |
| 3275 } | |
| 3276 else | |
| 3277 { | |
| 3278 error("synchronized function %s must be a member of a class", func.toChars()); | |
| 3279 } | |
| 3280 } | |
| 3281 } else version (TARGET_WINDOS) { | |
| 3282 if (func.isSynchronized() && cd && config.flags2 & CFG2.CFG2seh && | |
| 3283 !func.isStatic() && !sbody.usesEH()) | |
| 3284 { | |
| 3285 /* The "jmonitor" hack uses an optimized exception handling frame | |
| 3286 * which is a little shorter than the more general EH frame. | |
| 3287 */ | |
| 3288 s.Sfunc.Fflags3 |= F3.Fjmonitor; | |
| 3289 } | |
| 3290 } | |
| 3291 | |
| 3292 sbody.toIR(&irs); | |
| 3293 bx.curblock.BC = BC.BCret; | |
| 3294 | |
| 3295 f.Fstartblock = bx.startblock; | |
| 3296 // einit = el_combine(einit,bx.init); | |
| 3297 | |
| 3298 if (isCtorDeclaration()) | |
| 3299 { | |
| 3300 assert(sthis); | |
| 3301 for (b = f.Fstartblock; b; b = b.Bnext) | |
| 3302 { | |
| 3303 if (b.BC == BC.BCret) | |
| 3304 { | |
| 3305 b.BC = BC.BCretexp; | |
| 3306 b.Belem = el_combine(b.Belem, el_var(sthis)); | |
| 3307 } | |
| 3308 } | |
| 3309 } | |
| 3310 } | |
| 3311 | |
| 3312 // If static constructor | |
| 3313 if (isStaticConstructor()) | |
| 3314 { | |
| 3315 elem* e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3316 ector = el_combine(ector, e); | |
| 3317 } | |
| 3318 | |
| 3319 // If static destructor | |
| 3320 if (isStaticDestructor()) | |
| 3321 { | |
| 3322 elem* e; | |
| 3323 | |
| 3324 version (STATICCTOR) { | |
| 3325 e = el_bin(OPER.OPcall, TYM.TYvoid, el_var(rtlsym[RTLSYM.RTLSYM_FATEXIT]), el_ptr(s)); | |
| 3326 ector = el_combine(ector, e); | |
| 3327 dtorcount++; | |
| 3328 } else { | |
| 3329 StaticDtorDeclaration f2 = isStaticDtorDeclaration(); | |
| 3330 assert(f2); | |
| 3331 if (f2.vgate) | |
| 3332 { | |
| 3333 /* Increment destructor's vgate at construction time | |
| 3334 */ | |
| 3335 ectorgates.push(cast(void*)f2); | |
| 3336 } | |
| 3337 | |
| 3338 e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3339 edtor = el_combine(e, edtor); | |
| 3340 } | |
| 3341 } | |
| 3342 | |
| 3343 // If unit test | |
| 3344 if (isUnitTestDeclaration()) | |
| 3345 { | |
| 3346 elem* e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3347 etest = el_combine(etest, e); | |
| 3348 } | |
| 3349 | |
| 3350 if (global.errors) | |
| 3351 return; | |
| 3352 | |
| 3353 writefunc(s); | |
| 3354 | |
| 3355 if (isExport()) { | |
| 3356 obj_export(s, Poffset); | |
| 3357 } | |
| 3358 | |
| 3359 for (i = 0; i < irs.deferToObj.dim; i++) | |
| 3360 { | |
| 3361 Dsymbol ss = cast(Dsymbol)irs.deferToObj.data[i]; | |
| 3362 ss.toObjFile(0); | |
| 3363 } | |
| 3364 | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
17
diff
changeset
|
3365 version (POSIX) { ///TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS |
| 0 | 3366 // A hack to get a pointer to this function put in the .dtors segment |
| 3367 if (ident && ident.toChars() == "_STD") { | |
| 3368 obj_staticdtor(s); | |
| 3369 } | |
| 3370 } | |
| 3371 version (DMDV2) { | |
| 3372 if (irs.startaddress) | |
| 3373 { | |
| 3374 writef("Setting start address\n"); | |
| 3375 obj_startaddress(irs.startaddress); | |
| 3376 } | |
| 3377 } | |
| 3378 } | |
| 3379 | |
| 3380 int cvMember(ubyte* p) | |
| 3381 { | |
| 3382 assert(false); | |
| 3383 } | |
| 3384 | |
| 3385 /************************************* | |
| 3386 * Closures are implemented by taking the local variables that | |
| 3387 * need to survive the scope of the function, and copying them | |
| 3388 * into a gc allocated chuck of memory. That chunk, called the | |
| 3389 * closure here, is inserted into the linked list of stack | |
| 3390 * frames instead of the usual stack frame. | |
| 3391 * | |
| 3392 * buildClosure() inserts code just after the function prolog | |
| 3393 * is complete. It allocates memory for the closure, allocates | |
| 3394 * a local variable (sclosure) to point to it, inserts into it | |
| 3395 * the link to the enclosing frame, and copies into it the parameters | |
| 3396 * that are referred to in nested functions. | |
| 3397 * In VarExp.toElem and SymOffExp.toElem, when referring to a | |
| 3398 * variable that is in a closure, takes the offset from sclosure rather | |
| 3399 * than from the frame pointer. | |
| 3400 * | |
| 3401 * getEthis() and NewExp.toElem need to use sclosure, if set, rather | |
| 3402 * than the current frame pointer. | |
| 3403 */ | |
| 3404 void buildClosure(IRState* irs) | |
| 3405 { | |
| 3406 if (needsClosure()) | |
| 3407 { | |
| 3408 // Generate closure on the heap | |
| 3409 // BUG: doesn't capture variadic arguments passed to this function | |
| 3410 | |
| 3411 version (DMDV2) { | |
| 3412 /* BUG: doesn't handle destructors for the local variables. | |
| 3413 * The way to do it is to make the closure variables the fields | |
| 3414 * of a class object: | |
| 3415 * class Closure | |
| 3416 * { vtbl[] | |
| 3417 * monitor | |
| 3418 * ptr to destructor | |
| 3419 * sthis | |
| 3420 * ... closure variables ... | |
| 3421 * ~this() { call destructor } | |
| 3422 * } | |
| 3423 */ | |
| 3424 } | |
| 3425 //printf("FuncDeclaration.buildClosure()\n"); | |
| 3426 Symbol* sclosure; | |
| 3427 sclosure = symbol_name("__closptr".ptr, SC.SCauto, Type.tvoidptr.toCtype()); | |
| 3428 sclosure.Sflags |= SFL.SFLtrue | SFL.SFLfree; | |
| 3429 symbol_add(sclosure); | |
| 3430 irs.sclosure = sclosure; | |
| 3431 | |
| 3432 uint offset = PTRSIZE; // leave room for previous sthis | |
| 3433 for (int i = 0; i < closureVars.dim; i++) | |
| 3434 { | |
| 3435 VarDeclaration v = cast(VarDeclaration)closureVars.data[i]; | |
| 3436 assert(v.isVarDeclaration()); | |
| 3437 | |
| 3438 version (DMDV2) { | |
| 3439 if (v.needsAutoDtor()) | |
| 3440 v.error("has scoped destruction, cannot build closure"); | |
| 3441 } | |
| 3442 /* Align and allocate space for v in the closure | |
| 3443 * just like AggregateDeclaration.addField() does. | |
| 3444 */ | |
| 3445 uint memsize; | |
| 3446 uint memalignsize; | |
| 3447 uint xalign; | |
| 3448 /// version (DMDV2) { | |
| 3449 if (v.storage_class & STC.STClazy) | |
| 3450 { | |
| 3451 /* Lazy variables are really delegates, | |
| 3452 * so give same answers that TypeDelegate would | |
| 3453 */ | |
| 3454 memsize = PTRSIZE * 2; | |
| 3455 memalignsize = memsize; | |
| 3456 xalign = global.structalign; | |
| 3457 } | |
| 3458 else | |
| 3459 /// } | |
| 3460 { | |
| 3461 memsize = cast(uint)v.type.size(); | |
| 3462 memalignsize = v.type.alignsize(); | |
| 3463 xalign = v.type.memalign(global.structalign); | |
| 3464 } | |
| 3465 AggregateDeclaration.alignmember(xalign, memalignsize, &offset); | |
| 3466 v.offset = offset; | |
| 3467 offset += memsize; | |
| 3468 | |
| 3469 /* Can't do nrvo if the variable is put in a closure, since | |
| 3470 * what the shidden points to may no longer exist. | |
| 3471 */ | |
| 3472 if (nrvo_can && nrvo_var == v) | |
| 3473 { | |
| 3474 nrvo_can = 0; | |
| 3475 } | |
| 3476 } | |
| 3477 // offset is now the size of the closure | |
| 3478 | |
| 3479 // Allocate memory for the closure | |
| 3480 elem* e; | |
| 3481 e = el_long(TYM.TYint, offset); | |
| 3482 e = el_bin(OPER.OPcall, TYM.TYnptr, el_var(rtlsym[RTLSYM.RTLSYM_ALLOCMEMORY]), e); | |
| 3483 | |
| 3484 // Assign block of memory to sclosure | |
| 3485 // sclosure = allocmemory(sz); | |
| 3486 e = el_bin(OPER.OPeq, TYM.TYvoid, el_var(sclosure), e); | |
| 3487 | |
| 3488 // Set the first element to sthis | |
| 3489 // *(sclosure + 0) = sthis; | |
| 3490 elem* ethis; | |
| 3491 if (irs.sthis) | |
| 3492 ethis = el_var(irs.sthis); | |
| 3493 else | |
| 3494 ethis = el_long(TYM.TYnptr, 0); | |
| 3495 elem *ex = el_una(OPER.OPind, TYM.TYnptr, el_var(sclosure)); | |
| 3496 ex = el_bin(OPER.OPeq, TYM.TYnptr, ex, ethis); | |
| 3497 e = el_combine(e, ex); | |
| 3498 | |
| 3499 // Copy function parameters into closure | |
| 3500 for (int i = 0; i < closureVars.dim; i++) | |
| 3501 { VarDeclaration v = cast(VarDeclaration)closureVars.data[i]; | |
| 3502 | |
| 3503 if (!v.isParameter()) | |
| 3504 continue; | |
| 3505 TYM tym = v.type.totym(); | |
| 3506 if (v.type.toBasetype().ty == TY.Tsarray || v.isOut() || v.isRef()) | |
| 3507 tym = TYM.TYnptr; // reference parameters are just pointers | |
| 3508 /// version (DMDV2) { | |
| 3509 else if (v.storage_class & STC.STClazy) | |
| 3510 tym = TYM.TYdelegate; | |
| 3511 /// } | |
| 3512 ex = el_bin(OPER.OPadd, TYM.TYnptr, el_var(sclosure), el_long(TYM.TYint, v.offset)); | |
| 3513 ex = el_una(OPER.OPind, tym, ex); | |
| 3514 if (ex.Ety == TYM.TYstruct) | |
| 3515 { | |
| 3516 ex.Enumbytes = cast(uint)v.type.size(); | |
| 3517 ex = el_bin(OPER.OPstreq, tym, ex, el_var(v.toSymbol())); | |
| 3518 ex.Enumbytes = cast(uint)v.type.size(); | |
| 3519 } | |
| 3520 else | |
| 3521 { | |
| 3522 ex = el_bin(OPER.OPeq, tym, ex, el_var(v.toSymbol())); | |
| 3523 } | |
| 3524 | |
| 3525 e = el_combine(e, ex); | |
| 3526 } | |
| 3527 | |
| 3528 block_appendexp(irs.blx.curblock, e); | |
| 3529 } | |
| 3530 } | |
| 3531 | |
| 3532 FuncDeclaration isFuncDeclaration() { return this; } | |
|
14
2cc604139636
Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
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changeset
|
3533 } |