Mercurial > projects > ddmd
annotate dmd/FuncDeclaration.d @ 122:c77e9f4f1793
Statements -> Vector
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Thu, 02 Sep 2010 23:37:49 +0100 |
| parents | e28b18c23469 |
| children | 1765f3ef917d |
| rev | line source |
|---|---|
| 0 | 1 module dmd.FuncDeclaration; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.Declaration; |
| 5 import dmd.DotIdExp; | |
| 63 | 6 import dmd.AddrExp; |
| 0 | 7 import dmd.TryFinallyStatement; |
| 73 | 8 import dmd.TryCatchStatement; |
| 9 import dmd.Catch; | |
| 10 import dmd.DeclarationStatement; | |
| 0 | 11 import dmd.StaticDtorDeclaration; |
| 63 | 12 import dmd.GlobalExpressions; |
| 0 | 13 import dmd.PeelStatement; |
| 14 import dmd.SynchronizedStatement; | |
| 15 import dmd.TOK; | |
| 16 import dmd.SymOffExp; | |
| 17 import dmd.AssignExp; | |
| 18 import dmd.ExpInitializer; | |
| 19 import dmd.BE; | |
| 20 import dmd.Id; | |
|
93
df6d0f967680
implemented a whole bunch of methods to make phobos 2.035 compile
Trass3r
parents:
91
diff
changeset
|
21 import dmd.StorageClassDeclaration; |
| 0 | 22 import dmd.StringExp; |
| 23 import dmd.DsymbolExp; | |
| 24 import dmd.HaltExp; | |
| 25 import dmd.CommaExp; | |
| 26 import dmd.ReturnStatement; | |
| 27 import dmd.IntegerExp; | |
| 28 import dmd.ExpStatement; | |
| 29 import dmd.CSX; | |
| 30 import dmd.CompoundStatement; | |
| 31 import dmd.LabelStatement; | |
| 32 import dmd.ThisExp; | |
| 33 import dmd.SuperExp; | |
| 34 import dmd.IdentifierExp; | |
| 35 import dmd.AssertExp; | |
| 36 import dmd.CallExp; | |
| 37 import dmd.RET; | |
| 38 import dmd.VarExp; | |
| 39 import dmd.TupleDeclaration; | |
| 40 import dmd.ThisDeclaration; | |
| 41 import dmd.TypeTuple; | |
| 42 import dmd.TemplateInstance; | |
| 43 import dmd.ScopeDsymbol; | |
| 44 import dmd.AliasDeclaration; | |
| 45 import dmd.MOD; | |
| 46 import dmd.PROT; | |
| 47 import dmd.Lexer; | |
| 48 import dmd.LINK; | |
| 49 import dmd.CtorDeclaration; | |
| 50 import dmd.Global; | |
| 51 import dmd.DtorDeclaration; | |
| 52 import dmd.InvariantDeclaration; | |
| 53 import dmd.TY; | |
| 54 import dmd.PtrExp; | |
| 55 import dmd.DeclarationExp; | |
| 56 import dmd.InlineDoState; | |
| 57 import dmd.Argument; | |
| 58 import dmd.StructDeclaration; | |
| 59 import dmd.ClassDeclaration; | |
| 60 import dmd.InterfaceDeclaration; | |
| 61 import dmd.Array; | |
| 62 import dmd.Statement; | |
| 63 import dmd.Identifier; | |
| 64 import dmd.VarDeclaration; | |
| 65 import dmd.LabelDsymbol; | |
| 66 import dmd.DsymbolTable; | |
| 67 import dmd.ArrayTypes; | |
| 68 import dmd.Loc; | |
| 69 import dmd.ILS; | |
| 70 import dmd.ForeachStatement; | |
| 71 import dmd.Type; | |
| 72 import dmd.BUILTIN; | |
| 73 import dmd.TypeFunction; | |
| 74 import dmd.Expression; | |
| 75 import dmd.STC; | |
| 76 import dmd.Dsymbol; | |
| 77 import dmd.Scope; | |
| 78 import dmd.OutBuffer; | |
| 79 import dmd.HdrGenState; | |
| 80 import dmd.MATCH; | |
| 81 import dmd.AggregateDeclaration; | |
| 82 import dmd.InterState; | |
| 83 import dmd.InlineScanState; | |
| 84 import dmd.IRState; | |
| 85 import dmd.Util; | |
| 86 import dmd.BaseClass; | |
| 87 import dmd.Module; | |
| 88 import dmd.InlineCostState; | |
| 89 | |
| 90 import dmd.expression.Util; | |
| 91 | |
| 92 import dmd.declaration.Match; | |
| 93 | |
| 94 import dmd.backend.Symbol; | |
| 95 import dmd.backend.func_t; | |
| 96 import dmd.backend.Util; | |
| 97 import dmd.backend.glue; | |
| 98 import dmd.backend.SC; | |
| 99 import dmd.backend.F; | |
| 100 import dmd.backend.Cstate; | |
| 101 import dmd.backend.TYM; | |
| 102 import dmd.backend.OPER; | |
| 103 import dmd.backend.TYFL; | |
| 104 import dmd.backend.TYPE; | |
| 105 import dmd.backend.SFL; | |
| 106 import dmd.backend.mTY; | |
| 107 import dmd.backend.FL; | |
| 108 import dmd.backend.REG; | |
| 109 import dmd.backend.block; | |
| 110 import dmd.backend.Blockx; | |
| 111 import dmd.backend.Config; | |
| 112 import dmd.backend.BC; | |
| 113 import dmd.backend.elem; | |
| 114 import dmd.backend.targ_types; | |
| 115 import dmd.backend.mTYman; | |
| 116 import dmd.backend.RTLSYM; | |
| 117 import dmd.backend.LIST; | |
| 118 | |
| 119 import core.stdc.stdio; | |
| 120 import core.stdc.string; | |
| 63 | 121 version (Bug4054) import core.memory; |
| 122 | |
| 72 | 123 import dmd.interpret.Util; |
| 0 | 124 |
| 125 import std.string; | |
| 126 | |
| 127 class FuncDeclaration : Declaration | |
| 128 { | |
| 129 Array fthrows; // Array of Type's of exceptions (not used) | |
| 130 Statement frequire; | |
| 131 Statement fensure; | |
| 132 Statement fbody; | |
| 73 | 133 |
| 134 FuncDeclarations foverrides; // functions this function overrides | |
| 135 FuncDeclaration fdrequire; // function that does the in contract | |
| 136 FuncDeclaration fdensure; // function that does the out contract | |
| 0 | 137 |
| 138 Identifier outId; // identifier for out statement | |
| 139 VarDeclaration vresult; // variable corresponding to outId | |
| 140 LabelDsymbol returnLabel; // where the return goes | |
| 141 | |
| 142 DsymbolTable localsymtab; // used to prevent symbols in different | |
| 143 // scopes from having the same name | |
| 144 VarDeclaration vthis; // 'this' parameter (member and nested) | |
| 145 VarDeclaration v_arguments; // '_arguments' parameter | |
| 146 version (IN_GCC) { | |
| 147 VarDeclaration v_argptr; // '_argptr' variable | |
| 148 } | |
| 149 Dsymbols parameters; // Array of VarDeclaration's for parameters | |
| 150 DsymbolTable labtab; // statement label symbol table | |
| 151 Declaration overnext; // next in overload list | |
| 152 Loc endloc; // location of closing curly bracket | |
| 73 | 153 int vtblIndex; // for member functions, index into vtbl[] |
| 0 | 154 int naked; // !=0 if naked |
| 155 int inlineAsm; // !=0 if has inline assembler | |
| 73 | 156 ILS inlineStatus; |
| 0 | 157 int inlineNest; // !=0 if nested inline |
| 158 int cantInterpret; // !=0 if cannot interpret function | |
| 159 int semanticRun; // 1 semantic() run | |
| 160 // 2 semantic2() run | |
| 161 // 3 semantic3() started | |
| 162 // 4 semantic3() done | |
| 163 // 5 toObjFile() run | |
| 164 // this function's frame ptr | |
| 165 ForeachStatement fes; // if foreach body, this is the foreach | |
| 166 int introducing; // !=0 if 'introducing' function | |
| 167 Type tintro; // if !=null, then this is the type | |
| 168 // of the 'introducing' function | |
| 169 // this one is overriding | |
| 170 int inferRetType; // !=0 if return type is to be inferred | |
| 171 | |
| 172 // Things that should really go into Scope | |
| 173 int hasReturnExp; // 1 if there's a return exp; statement | |
| 174 // 2 if there's a throw statement | |
| 175 // 4 if there's an assert(0) | |
| 176 // 8 if there's inline asm | |
| 177 | |
| 178 // Support for NRVO (named return value optimization) | |
| 179 bool nrvo_can = true; // !=0 means we can do it | |
| 180 VarDeclaration nrvo_var; // variable to replace with shidden | |
| 181 Symbol* shidden; // hidden pointer passed to function | |
| 182 | |
| 183 version (DMDV2) { | |
| 184 BUILTIN builtin; // set if this is a known, builtin | |
| 185 // function we can evaluate at compile | |
| 186 // time | |
| 187 | |
| 188 int tookAddressOf; // set if someone took the address of | |
| 189 // this function | |
| 190 Dsymbols closureVars; // local variables in this function | |
| 191 // which are referenced by nested | |
| 192 // functions | |
| 193 } else { | |
| 194 int nestedFrameRef; // !=0 if nested variables referenced | |
| 195 } | |
| 196 | |
| 197 this(Loc loc, Loc endloc, Identifier id, STC storage_class, Type type) | |
| 198 { | |
| 199 super(id); | |
| 200 | |
| 201 //printf("FuncDeclaration(id = '%s', type = %p)\n", id.toChars(), type); | |
| 202 //printf("storage_class = x%x\n", storage_class); | |
| 203 this.storage_class = storage_class; | |
| 204 this.type = type; | |
| 205 this.loc = loc; | |
| 206 this.endloc = endloc; | |
| 73 | 207 fthrows = null; |
| 208 frequire = null; | |
| 209 fdrequire = null; | |
| 210 fdensure = null; | |
| 211 outId = null; | |
| 212 vresult = null; | |
| 213 returnLabel = null; | |
| 214 fensure = null; | |
| 215 fbody = null; | |
| 216 localsymtab = null; | |
| 217 vthis = null; | |
| 218 v_arguments = null; | |
| 219 version (IN_GCC) { | |
| 220 v_argptr = null; | |
| 221 } | |
| 222 parameters = null; | |
| 223 labtab = null; | |
| 224 overnext = null; | |
| 225 vtblIndex = -1; | |
| 226 hasReturnExp = 0; | |
| 227 naked = 0; | |
| 228 inlineStatus = ILS.ILSuninitialized; | |
| 229 inlineNest = 0; | |
| 230 inlineAsm = 0; | |
| 231 cantInterpret = 0; | |
| 232 semanticRun = 0; | |
| 233 version (DMDV1) { | |
| 234 nestedFrameRef = 0; | |
| 235 } | |
| 236 fes = null; | |
| 237 introducing = 0; | |
| 238 tintro = null; | |
| 0 | 239 /* The type given for "infer the return type" is a TypeFunction with |
| 240 * null for the return type. | |
| 241 */ | |
| 242 inferRetType = (type && type.nextOf() is null); | |
| 73 | 243 hasReturnExp = 0; |
| 244 nrvo_can = 1; | |
| 245 nrvo_var = null; | |
| 246 shidden = null; | |
| 247 version (DMDV2) { | |
| 248 builtin = BUILTINunknown; | |
| 249 tookAddressOf = 0; | |
| 250 } | |
| 251 foverrides = new FuncDeclarations(); | |
| 0 | 252 closureVars = new Dsymbols(); |
| 253 } | |
| 254 | |
| 72 | 255 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 256 { |
| 257 FuncDeclaration f; | |
| 258 | |
| 259 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
| 260 if (s) | |
| 261 f = cast(FuncDeclaration)s; | |
| 262 else | |
| 263 f = new FuncDeclaration(loc, endloc, ident, storage_class, type.syntaxCopy()); | |
| 264 | |
| 265 f.outId = outId; | |
| 266 f.frequire = frequire ? frequire.syntaxCopy() : null; | |
| 267 f.fensure = fensure ? fensure.syntaxCopy() : null; | |
| 268 f.fbody = fbody ? fbody.syntaxCopy() : null; | |
| 269 assert(!fthrows); // deprecated | |
| 270 | |
| 271 return f; | |
| 272 } | |
| 273 | |
| 274 // Do the semantic analysis on the external interface to the function. | |
| 72 | 275 override void semantic(Scope sc) |
| 0 | 276 { |
| 277 TypeFunction f; | |
| 278 StructDeclaration sd; | |
| 279 ClassDeclaration cd; | |
| 280 InterfaceDeclaration id; | |
| 281 Dsymbol pd; | |
| 282 | |
| 79 | 283 static if (false) |
| 284 { | |
| 0 | 285 printf("FuncDeclaration.semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc.linkage); |
| 286 if (isFuncLiteralDeclaration()) | |
| 287 printf("\tFuncLiteralDeclaration()\n"); | |
| 288 printf("sc.parent = %s, parent = %s\n", sc.parent.toChars(), parent ? parent.toChars() : ""); | |
| 289 printf("type: %p, %s\n", type, type.toChars()); | |
| 290 } | |
| 291 | |
| 292 if (semanticRun && isFuncLiteralDeclaration()) | |
| 293 { | |
| 79 | 294 /* Member functions that have return types that are |
| 295 * forward references can have semantic() run more than | |
| 296 * once on them. | |
| 297 * See test\interface2.d, test20 | |
| 298 */ | |
| 299 return; | |
| 0 | 300 } |
| 301 assert(semanticRun <= 1); | |
| 302 semanticRun = 1; | |
| 303 | |
| 304 storage_class |= sc.stc & ~STC.STCref; | |
| 305 //printf("function storage_class = x%x\n", storage_class); | |
| 306 | |
| 307 if (!originalType) | |
| 79 | 308 originalType = type; |
| 0 | 309 if (!type.deco) |
| 310 { | |
| 79 | 311 /* Apply const and invariant storage class |
| 312 * to the function type | |
| 313 */ | |
| 314 type = type.semantic(loc, sc); | |
| 315 STC stc = storage_class; | |
| 316 if (type.isInvariant()) | |
| 317 stc |= STC.STCimmutable; | |
| 318 if (type.isConst()) | |
| 319 stc |= STC.STCconst; | |
| 320 if (type.isShared() || storage_class & STC.STCsynchronized) | |
| 321 stc |= STC.STCshared; | |
| 322 switch (stc & STC.STC_TYPECTOR) | |
| 323 { | |
| 324 case STC.STCimmutable: | |
| 325 case STC.STCimmutable | STC.STCconst: | |
| 326 case STC.STCimmutable | STC.STCconst | STC.STCshared: | |
| 327 case STC.STCimmutable | STC.STCshared: | |
| 328 // Don't use toInvariant(), as that will do a merge() | |
| 329 type = type.makeInvariant(); | |
| 330 goto Lmerge; | |
| 331 | |
| 332 case STC.STCconst: | |
| 333 type = type.makeConst(); | |
| 334 goto Lmerge; | |
| 335 | |
| 336 case STC.STCshared | STC.STCconst: | |
| 337 type = type.makeSharedConst(); | |
| 338 goto Lmerge; | |
| 339 | |
| 340 case STC.STCshared: | |
| 341 type = type.makeShared(); | |
| 342 Lmerge: | |
| 343 if (!(type.ty == Tfunction && !type.nextOf())) | |
| 344 /* Can't do merge if return type is not known yet | |
| 345 */ | |
| 346 type.deco = type.merge().deco; | |
| 347 break; | |
| 348 | |
| 349 case STC.STCundefined: | |
| 350 break; | |
| 351 | |
| 352 default: | |
| 353 assert(0); | |
| 354 } | |
| 0 | 355 } |
| 356 //type.print(); | |
| 357 if (type.ty != TY.Tfunction) | |
| 358 { | |
| 359 error("%s must be a function", toChars()); | |
| 360 return; | |
| 361 } | |
| 362 f = cast(TypeFunction)type; | |
| 363 size_t nparams = Argument.dim(f.parameters); | |
| 364 | |
| 365 linkage = sc.linkage; | |
| 366 // if (!parent) | |
| 367 { | |
| 368 //parent = sc.scopesym; | |
| 369 parent = sc.parent; | |
| 370 } | |
| 371 protection = sc.protection; | |
| 372 Dsymbol parent = toParent(); | |
| 373 | |
| 374 if (storage_class & STC.STCscope) | |
| 375 error("functions cannot be scope"); | |
| 376 | |
| 377 if (isAbstract() && !isVirtual()) | |
| 378 error("non-virtual functions cannot be abstract"); | |
| 379 | |
| 380 if ((f.isConst() || f.isInvariant()) && !isThis()) | |
| 381 error("without 'this' cannot be const/immutable"); | |
| 382 | |
| 383 if (isAbstract() && isFinal()) | |
| 384 error("cannot be both final and abstract"); | |
| 385 static if (false) { | |
| 386 if (isAbstract() && fbody) | |
| 387 error("abstract functions cannot have bodies"); | |
| 388 } | |
| 389 | |
| 390 static if (false) { | |
| 391 if (isStaticConstructor() || isStaticDestructor()) | |
| 392 { | |
| 393 if (!isStatic() || type.nextOf().ty != Tvoid) | |
| 394 error("static constructors / destructors must be static void"); | |
| 395 if (f.arguments && f.arguments.dim) | |
| 396 error("static constructors / destructors must have empty parameter list"); | |
| 397 // BUG: check for invalid storage classes | |
| 398 } | |
| 399 } | |
| 400 | |
| 401 version (IN_GCC) { | |
| 402 AggregateDeclaration ad; | |
| 403 | |
| 404 ad = parent.isAggregateDeclaration(); | |
| 405 if (ad) | |
| 406 ad.methods.push(cast(void*)this); | |
| 407 } | |
| 408 sd = parent.isStructDeclaration(); | |
| 409 if (sd) | |
| 410 { | |
| 411 if (isCtorDeclaration()) | |
| 412 { | |
| 413 return; | |
| 414 } | |
| 415 static if (false) { | |
| 416 // Verify no constructors, destructors, etc. | |
| 417 if (isCtorDeclaration() | |
| 418 //||isDtorDeclaration() | |
| 419 //|| isInvariantDeclaration() | |
| 420 //|| isUnitTestDeclaration() | |
| 421 ) | |
| 422 { | |
| 423 error("special member functions not allowed for %ss", sd.kind()); | |
| 424 } | |
| 425 | |
| 426 if (!sd.inv) | |
| 427 sd.inv = isInvariantDeclaration(); | |
| 428 | |
| 429 if (!sd.aggNew) | |
| 430 sd.aggNew = isNewDeclaration(); | |
| 431 | |
| 432 if (isDelete()) | |
| 433 { | |
| 434 if (sd.aggDelete) | |
| 435 error("multiple delete's for struct %s", sd.toChars()); | |
| 436 sd.aggDelete = cast(DeleteDeclaration)this; | |
| 437 } | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 id = parent.isInterfaceDeclaration(); | |
| 442 if (id) | |
| 443 { | |
| 444 storage_class |= STC.STCabstract; | |
| 445 | |
| 446 if (isCtorDeclaration() || | |
| 447 ///static if (DMDV2) { | |
| 448 isPostBlitDeclaration() || | |
| 449 ///} | |
| 450 isDtorDeclaration() || | |
| 451 isInvariantDeclaration() || | |
| 452 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
| 453 error("special function not allowed in interface %s", id.toChars()); | |
| 454 if (fbody) | |
| 455 error("function body is not abstract in interface %s", id.toChars()); | |
| 456 } | |
| 457 | |
| 458 /* Template member functions aren't virtual: | |
| 459 * interface TestInterface { void tpl(T)(); } | |
| 460 * and so won't work in interfaces | |
| 461 */ | |
| 462 if ((pd = toParent()) !is null && | |
| 463 pd.isTemplateInstance() && | |
| 464 (pd = toParent2()) !is null && | |
| 465 (id = pd.isInterfaceDeclaration()) !is null) | |
| 466 { | |
| 467 error("template member function not allowed in interface %s", id.toChars()); | |
| 468 } | |
| 469 | |
| 470 cd = parent.isClassDeclaration(); | |
| 471 if (cd) | |
| 472 { int vi; | |
| 473 CtorDeclaration ctor; | |
| 474 DtorDeclaration dtor; | |
| 475 InvariantDeclaration inv; | |
| 476 | |
| 477 if (isCtorDeclaration()) | |
| 478 { | |
| 479 // ctor = cast(CtorDeclaration)this; | |
| 480 // if (!cd.ctor) | |
| 481 // cd.ctor = ctor; | |
| 482 return; | |
| 483 } | |
| 484 | |
| 485 static if (false) { | |
| 486 dtor = isDtorDeclaration(); | |
| 487 if (dtor) | |
| 488 { | |
| 489 if (cd.dtor) | |
| 490 error("multiple destructors for class %s", cd.toChars()); | |
| 491 cd.dtor = dtor; | |
| 492 } | |
| 493 | |
| 494 inv = isInvariantDeclaration(); | |
| 495 if (inv) | |
| 496 { | |
| 497 cd.inv = inv; | |
| 498 } | |
| 499 | |
| 500 if (isNewDeclaration()) | |
| 501 { | |
| 502 if (!cd.aggNew) | |
| 503 cd.aggNew = cast(NewDeclaration)this; | |
| 504 } | |
| 505 | |
| 506 if (isDelete()) | |
| 507 { | |
| 508 if (cd.aggDelete) | |
| 509 error("multiple delete's for class %s", cd.toChars()); | |
| 510 cd.aggDelete = cast(DeleteDeclaration)this; | |
| 511 } | |
| 512 } | |
| 513 | |
| 514 if (storage_class & STC.STCabstract) | |
| 515 cd.isabstract = true; | |
| 516 | |
| 517 // if static function, do not put in vtbl[] | |
| 518 if (!isVirtual()) | |
| 519 { | |
| 520 //printf("\tnot virtual\n"); | |
| 521 goto Ldone; | |
| 522 } | |
| 523 | |
| 524 // Find index of existing function in vtbl[] to override | |
| 525 vi = findVtblIndex(cd.vtbl, cd.baseClass ? cd.baseClass.vtbl.dim : 0); | |
| 526 switch (vi) | |
| 527 { | |
| 528 case -1: | |
| 529 /* Didn't find one, so | |
| 530 * This is an 'introducing' function which gets a new | |
| 531 * slot in the vtbl[]. | |
| 532 */ | |
| 533 | |
| 534 // Verify this doesn't override previous final function | |
| 535 if (cd.baseClass) | |
| 536 { | |
| 537 Dsymbol s = cd.baseClass.search(loc, ident, 0); | |
| 538 if (s) | |
| 539 { | |
| 540 FuncDeclaration ff = s.isFuncDeclaration(); | |
| 541 ff = ff.overloadExactMatch(type); | |
| 542 if (ff && ff.isFinal() && ff.prot() != PROT.PROTprivate) | |
| 543 error("cannot override final function %s", ff.toPrettyChars()); | |
| 544 } | |
| 545 } | |
| 546 | |
| 547 if (isFinal()) | |
| 548 { | |
| 549 if (isOverride()) | |
| 550 error("does not override any function"); | |
| 551 cd.vtblFinal.push(cast(void*)this); | |
| 552 } | |
| 553 else | |
| 554 { | |
| 555 // Append to end of vtbl[] | |
| 556 //printf("\tintroducing function\n"); | |
| 557 introducing = 1; | |
| 558 vi = cd.vtbl.dim; | |
| 559 cd.vtbl.push(cast(void*)this); | |
| 560 vtblIndex = vi; | |
| 561 } | |
| 562 break; | |
| 563 | |
| 564 case -2: // can't determine because of fwd refs | |
| 565 cd.sizeok = 2; // can't finish due to forward reference | |
| 566 return; | |
| 567 | |
| 568 default: | |
| 569 { | |
| 570 FuncDeclaration fdv = cast(FuncDeclaration)cd.vtbl.data[vi]; | |
| 571 // This function is covariant with fdv | |
| 572 if (fdv.isFinal()) | |
| 573 error("cannot override final function %s", fdv.toPrettyChars()); | |
| 574 | |
| 575 version (DMDV2) { | |
| 576 if (!isOverride()) | |
| 577 warning(loc, "overrides base class function %s, but is not marked with 'override'", fdv.toPrettyChars()); | |
| 578 } | |
| 579 | |
| 580 if (fdv.toParent() == parent) | |
| 581 { | |
| 582 // If both are mixins, then error. | |
| 583 // If either is not, the one that is not overrides | |
| 584 // the other. | |
| 585 if (fdv.parent.isClassDeclaration()) | |
| 586 break; | |
| 587 if (!this.parent.isClassDeclaration() | |
| 588 ///static if (!BREAKABI) { | |
| 589 && !isDtorDeclaration() | |
| 590 ///} | |
| 591 ///version (DMDV2) { | |
| 592 && !isPostBlitDeclaration() | |
| 593 ///} | |
| 594 ) | |
| 595 error("multiple overrides of same function"); | |
| 596 } | |
| 597 cd.vtbl.data[vi] = cast(void*)this; | |
| 598 vtblIndex = vi; | |
| 73 | 599 |
| 600 /* Remember which functions this overrides | |
| 601 */ | |
|
74
7e0d548de9e6
Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
73
diff
changeset
|
602 foverrides.push(fdv); |
| 0 | 603 |
| 604 /* This works by whenever this function is called, | |
| 605 * it actually returns tintro, which gets dynamically | |
| 606 * cast to type. But we know that tintro is a base | |
| 607 * of type, so we could optimize it by not doing a | |
| 608 * dynamic cast, but just subtracting the isBaseOf() | |
| 609 * offset if the value is != null. | |
| 610 */ | |
| 611 | |
| 612 if (fdv.tintro) | |
| 613 tintro = fdv.tintro; | |
| 614 else if (!type.equals(fdv.type)) | |
| 615 { | |
| 616 /* Only need to have a tintro if the vptr | |
| 617 * offsets differ | |
| 618 */ | |
| 619 int offset; | |
| 620 if (fdv.type.nextOf().isBaseOf(type.nextOf(), &offset)) | |
| 621 { | |
| 622 tintro = fdv.type; | |
| 623 } | |
| 624 } | |
| 625 break; | |
| 626 } | |
| 627 } | |
| 628 | |
| 629 /* Go through all the interface bases. | |
| 630 * If this function is covariant with any members of those interface | |
| 631 * functions, set the tintro. | |
| 632 */ | |
| 633 for (int i = 0; i < cd.interfaces_dim; i++) | |
| 634 { | |
| 635 BaseClass b = cd.interfaces[i]; | |
| 636 vi = findVtblIndex(b.base.vtbl, b.base.vtbl.dim); | |
| 637 switch (vi) | |
| 638 { | |
| 639 case -1: | |
| 640 break; | |
| 641 | |
| 642 case -2: | |
| 643 cd.sizeok = 2; // can't finish due to forward reference | |
| 644 return; | |
| 645 | |
| 646 default: | |
| 647 { FuncDeclaration fdv = cast(FuncDeclaration)b.base.vtbl.data[vi]; | |
| 648 Type ti = null; | |
| 73 | 649 |
| 650 /* Remember which functions this overrides | |
| 651 */ | |
|
74
7e0d548de9e6
Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
73
diff
changeset
|
652 foverrides.push(fdv); |
| 0 | 653 |
| 654 if (fdv.tintro) | |
| 73 | 655 ti = fdv.tintro; |
| 0 | 656 else if (!type.equals(fdv.type)) |
| 657 { | |
| 658 /* Only need to have a tintro if the vptr | |
| 659 * offsets differ | |
| 660 */ | |
| 661 int offset; | |
| 662 if (fdv.type.nextOf().isBaseOf(type.nextOf(), &offset)) | |
| 663 { | |
| 664 ti = fdv.type; | |
| 665 static if (false) { | |
| 666 if (offset) | |
| 667 ti = fdv.type; | |
| 668 else if (type.nextOf().ty == Tclass) | |
| 669 { | |
| 670 ClassDeclaration cdn = (cast(TypeClass)type.nextOf()).sym; | |
| 671 if (cdn && cdn.sizeok != 1) | |
| 672 ti = fdv.type; | |
| 673 } | |
| 674 } | |
| 675 } | |
| 676 } | |
| 677 if (ti) | |
| 678 { | |
| 679 if (tintro && !tintro.equals(ti)) | |
| 680 { | |
| 681 error("incompatible covariant types %s and %s", tintro.toChars(), ti.toChars()); | |
| 682 } | |
| 683 tintro = ti; | |
| 684 } | |
| 685 goto L2; | |
| 686 } | |
| 687 } | |
| 688 } | |
| 689 | |
| 690 if (introducing && isOverride()) | |
| 691 { | |
| 692 error("does not override any function"); | |
| 693 } | |
| 694 | |
| 695 L2: ; | |
| 696 } | |
| 697 else if (isOverride() && !parent.isTemplateInstance()) | |
| 698 error("override only applies to class member functions"); | |
| 699 | |
| 700 /* Do not allow template instances to add virtual functions | |
| 701 * to a class. | |
| 702 */ | |
| 703 if (isVirtual()) | |
| 704 { | |
| 705 TemplateInstance ti = parent.isTemplateInstance(); | |
| 706 if (ti) | |
| 707 { | |
| 708 // Take care of nested templates | |
| 709 while (1) | |
| 710 { | |
| 711 TemplateInstance ti2 = ti.tempdecl.parent.isTemplateInstance(); | |
| 712 if (!ti2) | |
| 713 break; | |
| 714 ti = ti2; | |
| 715 } | |
| 716 | |
| 717 // If it's a member template | |
| 718 ClassDeclaration cdd = ti.tempdecl.isClassMember(); | |
| 719 if (cdd) | |
| 720 { | |
| 721 error("cannot use template to add virtual function to class '%s'", cdd.toChars()); | |
| 722 } | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 if (isMain()) | |
| 727 { | |
| 728 // Check parameters to see if they are either () or (char[][] args) | |
| 729 switch (nparams) | |
| 730 { | |
| 731 case 0: | |
| 732 break; | |
| 733 | |
| 734 case 1: | |
| 735 { | |
| 736 Argument arg0 = Argument.getNth(f.parameters, 0); | |
| 737 if (arg0.type.ty != TY.Tarray || | |
| 738 arg0.type.nextOf().ty != TY.Tarray || | |
| 739 arg0.type.nextOf().nextOf().ty != TY.Tchar || | |
| 740 arg0.storageClass & (STC.STCout | STC.STCref | STC.STClazy)) | |
| 741 goto Lmainerr; | |
| 742 break; | |
| 743 } | |
| 744 | |
| 745 default: | |
| 746 goto Lmainerr; | |
| 747 } | |
| 748 | |
| 79 | 749 if (!f.nextOf()) |
| 750 error("must return int or void"); | |
| 751 else if (f.nextOf().ty != TY.Tint32 && f.nextOf().ty != TY.Tvoid) | |
| 0 | 752 error("must return int or void, not %s", f.nextOf().toChars()); |
| 753 if (f.varargs) | |
| 754 { | |
| 755 Lmainerr: | |
| 756 error("parameters must be main() or main(char[][] args)"); | |
| 757 } | |
| 758 } | |
| 759 | |
| 760 if (ident == Id.assign && (sd || cd)) | |
| 761 { // Disallow identity assignment operator. | |
| 762 | |
| 763 // opAssign(...) | |
| 764 if (nparams == 0) | |
| 765 { if (f.varargs == 1) | |
| 766 goto Lassignerr; | |
| 767 } | |
| 768 else | |
| 769 { | |
| 770 Argument arg0 = Argument.getNth(f.parameters, 0); | |
| 771 Type t0 = arg0.type.toBasetype(); | |
| 772 Type tb = sd ? sd.type : cd.type; | |
| 773 if (arg0.type.implicitConvTo(tb) || | |
| 774 (sd && t0.ty == TY.Tpointer && t0.nextOf().implicitConvTo(tb)) | |
| 775 ) | |
| 776 { | |
| 777 if (nparams == 1) | |
| 778 goto Lassignerr; | |
| 779 Argument arg1 = Argument.getNth(f.parameters, 1); | |
| 780 if (arg1.defaultArg) | |
| 781 goto Lassignerr; | |
| 782 } | |
| 783 } | |
| 784 } | |
| 73 | 785 |
| 786 if (isVirtual()) | |
| 787 { | |
| 788 /* Rewrite contracts as nested functions, then call them. | |
| 789 * Doing it as nested functions means that overriding functions | |
| 790 * can call them. | |
| 791 */ | |
| 792 if (frequire) | |
| 793 { | |
| 794 /* in { ... } | |
| 795 * becomes: | |
| 796 * void __require() { ... } | |
| 797 * __require(); | |
| 798 */ | |
| 799 Loc loc = frequire.loc; | |
| 800 TypeFunction tf = new TypeFunction(null, Type.tvoid, 0, LINKd); | |
| 801 FuncDeclaration fd = new FuncDeclaration(loc, loc, Id.require, STCundefined, tf); | |
| 802 fd.fbody = frequire; | |
| 803 Statement s1 = new DeclarationStatement(loc, fd); | |
| 804 Expression e = new CallExp(loc, new VarExp(loc, fd, 0), cast(Expressions)null); | |
| 805 Statement s2 = new ExpStatement(loc, e); | |
| 806 frequire = new CompoundStatement(loc, s1, s2); | |
| 807 fdrequire = fd; | |
| 808 } | |
| 809 | |
| 810 if (fensure) | |
| 811 { /* out (result) { ... } | |
| 812 * becomes: | |
| 813 * tret __ensure(ref tret result) { ... } | |
| 814 * __ensure(result); | |
| 815 */ | |
| 816 if (!outId && f.nextOf().toBasetype().ty != Tvoid) | |
| 817 outId = Id.result; // provide a default | |
| 818 | |
| 819 Loc loc = fensure.loc; | |
| 820 Arguments arguments = new Arguments(); | |
| 821 Argument a = null; | |
| 822 if (outId) | |
| 823 { | |
| 824 a = new Argument(STCref, f.nextOf(), outId, null); | |
| 825 arguments.push(cast(void*)a); | |
| 826 } | |
| 827 TypeFunction tf = new TypeFunction(arguments, Type.tvoid, 0, LINKd); | |
| 828 FuncDeclaration fd = new FuncDeclaration(loc, loc, Id.ensure, STCundefined, tf); | |
| 829 fd.fbody = fensure; | |
| 830 Statement s1 = new DeclarationStatement(loc, fd); | |
| 831 Expression eresult = null; | |
| 832 if (outId) | |
| 833 eresult = new IdentifierExp(loc, outId); | |
| 834 Expression e = new CallExp(loc, new VarExp(loc, fd, 0), eresult); | |
| 835 Statement s2 = new ExpStatement(loc, e); | |
| 836 fensure = new CompoundStatement(loc, s1, s2); | |
| 837 fdensure = fd; | |
| 838 } | |
| 839 } | |
| 0 | 840 |
| 841 Ldone: | |
| 842 /* Save scope for possible later use (if we need the | |
| 843 * function internals) | |
| 844 */ | |
|
87
b17640f0e4e8
Fixed a bug with a Scope.this(Scope enclosing) being called instead of Scope.clone() method (as a copy ctor replacement)
korDen
parents:
79
diff
changeset
|
845 scope_ = sc.clone(); |
| 0 | 846 scope_.setNoFree(); |
| 847 return; | |
| 848 | |
| 849 Lassignerr: | |
| 850 if (sd) | |
| 851 { | |
| 852 sd.hasIdentityAssign = 1; // don't need to generate it | |
| 853 goto Ldone; | |
| 854 } | |
| 855 error("identity assignment operator overload is illegal"); | |
| 856 } | |
| 857 | |
| 72 | 858 override void semantic2(Scope sc) |
| 0 | 859 { |
| 860 } | |
| 861 | |
| 862 // Do the semantic analysis on the internals of the function. | |
| 72 | 863 override void semantic3(Scope sc) |
| 0 | 864 { |
| 865 TypeFunction f; | |
| 866 VarDeclaration argptr = null; | |
| 867 VarDeclaration _arguments = null; | |
| 868 | |
| 869 if (!parent) | |
| 870 { | |
| 871 if (global.errors) | |
| 872 return; | |
| 873 //printf("FuncDeclaration.semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
| 874 assert(0); | |
| 875 } | |
| 876 //printf("FuncDeclaration.semantic3('%s.%s', sc = %p, loc = %s)\n", parent.toChars(), toChars(), sc, loc.toChars()); | |
| 877 //fflush(stdout); | |
| 878 //printf("storage class = x%x %x\n", sc.stc, storage_class); | |
| 879 //{ static int x; if (++x == 2) *(char*)0=0; } | |
| 880 //printf("\tlinkage = %d\n", sc.linkage); | |
| 881 | |
| 882 //printf(" sc.incontract = %d\n", sc.incontract); | |
| 883 if (semanticRun >= 3) | |
| 884 return; | |
| 885 semanticRun = 3; | |
| 886 | |
| 887 if (!type || type.ty != TY.Tfunction) | |
| 888 return; | |
| 889 f = cast(TypeFunction)(type); | |
| 890 | |
| 891 // Check the 'throws' clause | |
| 892 if (fthrows) | |
| 893 { | |
| 894 for (int i = 0; i < fthrows.dim; i++) | |
| 895 { | |
| 896 Type t = cast(Type)fthrows.data[i]; | |
| 897 | |
| 898 t = t.semantic(loc, sc); | |
| 899 if (!t.isClassHandle()) | |
| 900 error("can only throw classes, not %s", t.toChars()); | |
| 901 } | |
| 902 } | |
| 73 | 903 |
| 904 frequire = mergeFrequire(frequire); | |
| 905 fensure = mergeFensure(fensure); | |
| 0 | 906 |
| 907 if (fbody || frequire) | |
| 908 { | |
| 909 /* Symbol table into which we place parameters and nested functions, | |
| 910 * solely to diagnose name collisions. | |
| 911 */ | |
| 912 localsymtab = new DsymbolTable(); | |
| 913 | |
| 914 // Establish function scope | |
| 915 ScopeDsymbol ss = new ScopeDsymbol(); | |
| 916 ss.parent = sc.scopesym; | |
| 917 Scope sc2 = sc.push(ss); | |
| 918 sc2.func = this; | |
| 919 sc2.parent = this; | |
| 920 sc2.callSuper = 0; | |
| 921 sc2.sbreak = null; | |
| 922 sc2.scontinue = null; | |
| 923 sc2.sw = null; | |
| 924 sc2.fes = fes; | |
| 925 sc2.linkage = LINK.LINKd; | |
| 926 sc2.stc &= ~(STC.STCauto | STC.STCscope | STC.STCstatic | STC.STCabstract | STC.STCdeprecated | STC.STC_TYPECTOR | STC.STCfinal | STC.STCtls | STC.STCgshared | STC.STCref); | |
| 927 sc2.protection = PROT.PROTpublic; | |
| 928 sc2.explicitProtection = 0; | |
| 929 sc2.structalign = 8; | |
| 930 sc2.incontract = 0; | |
| 931 sc2.tf = null; | |
| 932 sc2.noctor = 0; | |
| 933 | |
| 934 // Declare 'this' | |
| 935 AggregateDeclaration ad = isThis(); | |
| 936 if (ad) | |
| 937 { VarDeclaration v; | |
| 938 | |
| 939 if (isFuncLiteralDeclaration() && isNested()) | |
| 940 { | |
| 941 error("literals cannot be class members"); | |
| 942 return; | |
| 943 } | |
| 944 else | |
| 945 { | |
| 946 assert(!isNested()); // can't be both member and nested | |
| 947 assert(ad.handle); | |
| 948 Type thandle = ad.handle; | |
| 949 version (STRUCTTHISREF) { | |
| 950 thandle = thandle.addMod(type.mod); | |
| 951 thandle = thandle.addStorageClass(storage_class); | |
| 952 if (isPure()) | |
| 953 thandle = thandle.addMod(MOD.MODconst); | |
| 954 } else { | |
| 955 if (storage_class & STC.STCconst || type.isConst()) | |
| 956 { | |
| 957 assert(0); // BUG: shared not handled | |
| 958 if (thandle.ty == TY.Tclass) | |
| 959 thandle = thandle.constOf(); | |
| 960 else | |
| 961 { assert(thandle.ty == TY.Tpointer); | |
| 962 thandle = thandle.nextOf().constOf().pointerTo(); | |
| 963 } | |
| 964 } | |
| 965 else if (storage_class & STC.STCimmutable || type.isInvariant()) | |
| 966 { | |
| 967 if (thandle.ty == TY.Tclass) | |
| 968 thandle = thandle.invariantOf(); | |
| 969 else | |
| 970 { assert(thandle.ty == TY.Tpointer); | |
| 971 thandle = thandle.nextOf().invariantOf().pointerTo(); | |
| 972 } | |
| 973 } | |
| 974 else if (storage_class & STC.STCshared || type.isShared()) | |
| 975 { | |
| 976 assert(0); // not implemented | |
| 977 } | |
| 978 } | |
| 979 v = new ThisDeclaration(loc, thandle); | |
| 980 v.storage_class |= STC.STCparameter; | |
| 981 version (STRUCTTHISREF) { | |
| 982 if (thandle.ty == TY.Tstruct) | |
| 983 v.storage_class |= STC.STCref; | |
| 984 } | |
| 985 v.semantic(sc2); | |
| 986 if (!sc2.insert(v)) | |
| 987 assert(0); | |
| 988 v.parent = this; | |
| 989 vthis = v; | |
| 990 } | |
| 991 } | |
| 992 else if (isNested()) | |
| 993 { | |
| 994 /* The 'this' for a nested function is the link to the | |
| 995 * enclosing function's stack frame. | |
| 996 * Note that nested functions and member functions are disjoint. | |
| 997 */ | |
| 998 VarDeclaration v = new ThisDeclaration(loc, Type.tvoid.pointerTo()); | |
| 999 v.storage_class |= STC.STCparameter; | |
| 1000 v.semantic(sc2); | |
| 1001 if (!sc2.insert(v)) | |
| 1002 assert(0); | |
| 1003 v.parent = this; | |
| 1004 vthis = v; | |
| 1005 } | |
| 1006 | |
| 1007 // Declare hidden variable _arguments[] and _argptr | |
| 1008 if (f.varargs == 1) | |
| 1009 { | |
| 1010 version (TARGET_NET) { | |
| 1011 varArgs(sc2, f, argptr, _arguments); | |
| 1012 } else { | |
| 1013 Type t; | |
| 1014 | |
| 1015 if (f.linkage == LINK.LINKd) | |
| 1016 { | |
| 1017 // Declare _arguments[] | |
| 1018 version (BREAKABI) { | |
| 1019 v_arguments = new VarDeclaration(Loc(0), Type.typeinfotypelist.type, Id._arguments_typeinfo, null); | |
| 1020 v_arguments.storage_class = STCparameter; | |
| 1021 v_arguments.semantic(sc2); | |
| 1022 sc2.insert(v_arguments); | |
| 1023 v_arguments.parent = this; | |
| 1024 | |
| 1025 //t = Type.typeinfo.type.constOf().arrayOf(); | |
| 1026 t = Type.typeinfo.type.arrayOf(); | |
| 1027 _arguments = new VarDeclaration(Loc(0), t, Id._arguments, null); | |
| 1028 _arguments.semantic(sc2); | |
| 1029 sc2.insert(_arguments); | |
| 1030 _arguments.parent = this; | |
| 1031 } else { | |
| 1032 t = Type.typeinfo.type.arrayOf(); | |
| 1033 v_arguments = new VarDeclaration(Loc(0), t, Id._arguments, null); | |
| 1034 v_arguments.storage_class = STC.STCparameter | STC.STCin; | |
| 1035 v_arguments.semantic(sc2); | |
| 1036 sc2.insert(v_arguments); | |
| 1037 v_arguments.parent = this; | |
| 1038 } | |
| 1039 } | |
| 1040 if (f.linkage == LINK.LINKd || (parameters && parameters.dim)) | |
| 1041 { // Declare _argptr | |
| 1042 version (IN_GCC) { | |
| 1043 t = d_gcc_builtin_va_list_d_type; | |
| 1044 } else { | |
| 1045 t = Type.tvoid.pointerTo(); | |
| 1046 } | |
| 1047 argptr = new VarDeclaration(Loc(0), t, Id._argptr, null); | |
| 1048 argptr.semantic(sc2); | |
| 1049 sc2.insert(argptr); | |
| 1050 argptr.parent = this; | |
| 1051 } | |
| 1052 } | |
| 1053 } | |
| 1054 | |
| 1055 // Propagate storage class from tuple parameters to their element-parameters. | |
| 1056 if (f.parameters) | |
| 1057 { | |
| 1058 for (size_t i = 0; i < f.parameters.dim; i++) | |
| 1059 { Argument arg = cast(Argument)f.parameters.data[i]; | |
| 1060 | |
| 1061 //printf("[%d] arg.type.ty = %d %s\n", i, arg.type.ty, arg.type.toChars()); | |
| 1062 if (arg.type.ty == TY.Ttuple) | |
| 1063 { TypeTuple t = cast(TypeTuple)arg.type; | |
| 1064 size_t dim = Argument.dim(t.arguments); | |
| 1065 for (size_t j = 0; j < dim; j++) | |
| 1066 { Argument narg = Argument.getNth(t.arguments, j); | |
| 1067 narg.storageClass = arg.storageClass; | |
| 1068 } | |
| 1069 } | |
| 1070 } | |
| 1071 } | |
| 1072 | |
| 1073 /* Declare all the function parameters as variables | |
| 1074 * and install them in parameters[] | |
| 1075 */ | |
| 1076 size_t nparams = Argument.dim(f.parameters); | |
| 1077 if (nparams) | |
| 1078 { /* parameters[] has all the tuples removed, as the back end | |
| 1079 * doesn't know about tuples | |
| 1080 */ | |
| 1081 parameters = new Dsymbols(); | |
| 1082 parameters.reserve(nparams); | |
| 1083 for (size_t i = 0; i < nparams; i++) | |
| 1084 { | |
| 1085 Argument arg = Argument.getNth(f.parameters, i); | |
| 1086 Identifier id = arg.ident; | |
| 1087 if (!id) | |
| 1088 { | |
| 1089 /* Generate identifier for un-named parameter, | |
| 1090 * because we need it later on. | |
| 1091 */ | |
| 1092 arg.ident = id = Identifier.generateId("_param_", i); | |
| 1093 } | |
| 1094 Type vtype = arg.type; | |
| 1095 if (isPure()) | |
| 1096 vtype = vtype.addMod(MOD.MODconst); | |
| 1097 VarDeclaration v = new VarDeclaration(loc, vtype, id, null); | |
| 1098 //printf("declaring parameter %s of type %s\n", v.toChars(), v.type.toChars()); | |
| 1099 v.storage_class |= STC.STCparameter; | |
| 1100 if (f.varargs == 2 && i + 1 == nparams) | |
| 1101 v.storage_class |= STC.STCvariadic; | |
| 1102 v.storage_class |= arg.storageClass & (STC.STCin | STC.STCout | STC.STCref | STC.STClazy | STC.STCfinal | STC.STC_TYPECTOR | STC.STCnodtor); | |
| 1103 v.semantic(sc2); | |
| 1104 if (!sc2.insert(v)) | |
| 1105 error("parameter %s.%s is already defined", toChars(), v.toChars()); | |
| 1106 else | |
|
74
7e0d548de9e6
Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
73
diff
changeset
|
1107 parameters.push(v); |
| 0 | 1108 localsymtab.insert(v); |
| 1109 v.parent = this; | |
| 1110 } | |
| 1111 } | |
| 1112 | |
| 1113 // Declare the tuple symbols and put them in the symbol table, | |
| 1114 // but not in parameters[]. | |
| 1115 if (f.parameters) | |
| 1116 { | |
| 1117 for (size_t i = 0; i < f.parameters.dim; i++) | |
| 1118 { Argument arg = cast(Argument)f.parameters.data[i]; | |
| 1119 | |
| 1120 if (!arg.ident) | |
| 1121 continue; // never used, so ignore | |
| 1122 if (arg.type.ty == TY.Ttuple) | |
| 1123 { TypeTuple t = cast(TypeTuple)arg.type; | |
| 1124 size_t dim = Argument.dim(t.arguments); | |
| 1125 Objects exps = new Objects(); | |
| 1126 exps.setDim(dim); | |
| 1127 for (size_t j = 0; j < dim; j++) | |
| 1128 { Argument narg = Argument.getNth(t.arguments, j); | |
| 1129 assert(narg.ident); | |
| 1130 VarDeclaration v = sc2.search(Loc(0), narg.ident, null).isVarDeclaration(); | |
| 1131 assert(v); | |
| 1132 Expression e = new VarExp(v.loc, v); | |
|
94
3a0b150c9841
Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
93
diff
changeset
|
1133 exps[j] = e; |
| 0 | 1134 } |
| 1135 assert(arg.ident); | |
|
94
3a0b150c9841
Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
93
diff
changeset
|
1136 auto v = new TupleDeclaration(loc, arg.ident, exps); |
| 0 | 1137 //printf("declaring tuple %s\n", v.toChars()); |
| 1138 v.isexp = 1; | |
| 1139 if (!sc2.insert(v)) | |
| 1140 error("parameter %s.%s is already defined", toChars(), v.toChars()); | |
| 1141 localsymtab.insert(v); | |
| 1142 v.parent = this; | |
| 1143 } | |
| 1144 } | |
| 1145 } | |
| 1146 | |
| 1147 /* Do the semantic analysis on the [in] preconditions and | |
| 1148 * [out] postconditions. | |
| 1149 */ | |
| 1150 sc2.incontract++; | |
| 1151 | |
| 1152 if (frequire) | |
| 1153 { /* frequire is composed of the [in] contracts | |
| 1154 */ | |
| 1155 // BUG: need to error if accessing out parameters | |
| 1156 // BUG: need to treat parameters as const | |
| 1157 // BUG: need to disallow returns and throws | |
| 1158 // BUG: verify that all in and ref parameters are read | |
| 1159 frequire = frequire.semantic(sc2); | |
| 1160 labtab = null; // so body can't refer to labels | |
| 1161 } | |
| 1162 | |
| 1163 if (fensure || addPostInvariant()) | |
| 79 | 1164 { |
| 1165 /* fensure is composed of the [out] contracts | |
| 0 | 1166 */ |
| 79 | 1167 if (!type.nextOf()) // if return type is inferred |
| 1168 { | |
| 1169 /* This case: | |
| 1170 * auto fp = function() out { } body { }; | |
| 1171 * Can fix by doing semantic() onf fbody first. | |
| 1172 */ | |
| 1173 error("post conditions are not supported if the return type is inferred"); | |
| 1174 return; | |
| 1175 } | |
| 1176 | |
| 0 | 1177 ScopeDsymbol sym = new ScopeDsymbol(); |
| 1178 sym.parent = sc2.scopesym; | |
| 1179 sc2 = sc2.push(sym); | |
| 1180 | |
| 1181 assert(type.nextOf()); | |
| 1182 if (type.nextOf().ty == TY.Tvoid) | |
| 1183 { | |
| 1184 if (outId) | |
| 1185 error("void functions have no result"); | |
| 1186 } | |
| 1187 else | |
| 1188 { | |
| 1189 if (!outId) | |
| 1190 outId = Id.result; // provide a default | |
| 1191 } | |
| 1192 | |
| 1193 if (outId) | |
| 1194 { // Declare result variable | |
| 1195 VarDeclaration v; | |
| 1196 Loc loc = this.loc; | |
| 1197 | |
| 1198 if (fensure) | |
| 1199 loc = fensure.loc; | |
| 1200 | |
| 1201 v = new VarDeclaration(loc, type.nextOf(), outId, null); | |
| 1202 v.noauto = true; | |
| 1203 version (DMDV2) { | |
| 1204 if (f.isref) | |
| 1205 { | |
| 1206 v.storage_class |= STC.STCref | STC.STCforeach; | |
| 1207 } | |
| 1208 } | |
| 1209 sc2.incontract--; | |
| 1210 v.semantic(sc2); | |
| 1211 sc2.incontract++; | |
| 1212 if (!sc2.insert(v)) | |
| 1213 error("out result %s is already defined", v.toChars()); | |
| 1214 v.parent = this; | |
| 1215 vresult = v; | |
| 1216 | |
| 1217 // vresult gets initialized with the function return value | |
| 1218 // in ReturnStatement.semantic() | |
| 1219 } | |
| 1220 | |
| 1221 // BUG: need to treat parameters as const | |
| 1222 // BUG: need to disallow returns and throws | |
| 1223 if (fensure) | |
| 1224 { fensure = fensure.semantic(sc2); | |
| 1225 labtab = null; // so body can't refer to labels | |
| 1226 } | |
| 1227 | |
| 1228 if (!global.params.useOut) | |
| 1229 { fensure = null; // discard | |
| 1230 vresult = null; | |
| 1231 } | |
| 1232 | |
| 1233 // Postcondition invariant | |
| 1234 if (addPostInvariant()) | |
| 1235 { | |
| 1236 Expression e = null; | |
| 1237 if (isCtorDeclaration()) | |
| 1238 { | |
| 1239 // Call invariant directly only if it exists | |
| 1240 InvariantDeclaration inv = ad.inv; | |
| 1241 ClassDeclaration cd = ad.isClassDeclaration(); | |
| 1242 | |
| 1243 while (!inv && cd) | |
| 1244 { | |
| 1245 cd = cd.baseClass; | |
| 1246 if (!cd) | |
| 1247 break; | |
| 1248 inv = cd.inv; | |
| 1249 } | |
| 1250 if (inv) | |
| 1251 { | |
| 1252 e = new DsymbolExp(Loc(0), inv); | |
| 1253 e = new CallExp(Loc(0), e); | |
| 1254 e = e.semantic(sc2); | |
| 1255 } | |
| 1256 } | |
| 1257 else | |
| 1258 { // Call invariant virtually | |
| 1259 Expression v = new ThisExp(Loc(0)); | |
| 1260 v.type = vthis.type; | |
| 1261 version (STRUCTTHISREF) { | |
| 1262 if (ad.isStructDeclaration()) | |
| 1263 v = v.addressOf(sc); | |
| 1264 } | |
| 1265 e = new AssertExp(Loc(0), v); | |
| 1266 } | |
| 1267 if (e) | |
| 1268 { | |
| 1269 ExpStatement s = new ExpStatement(Loc(0), e); | |
| 1270 if (fensure) | |
| 1271 fensure = new CompoundStatement(Loc(0), s, fensure); | |
| 1272 else | |
| 1273 fensure = s; | |
| 1274 } | |
| 1275 } | |
| 1276 | |
| 1277 if (fensure) | |
| 1278 { returnLabel = new LabelDsymbol(Id.returnLabel); | |
| 1279 LabelStatement ls = new LabelStatement(Loc(0), Id.returnLabel, fensure); | |
| 1280 ls.isReturnLabel = 1; | |
| 1281 returnLabel.statement = ls; | |
| 1282 } | |
| 1283 sc2 = sc2.pop(); | |
| 1284 } | |
| 1285 | |
| 1286 sc2.incontract--; | |
| 1287 | |
| 1288 if (fbody) | |
| 1289 { ClassDeclaration cd = isClassMember(); | |
| 1290 | |
| 1291 /* If this is a class constructor | |
| 1292 */ | |
| 1293 if (isCtorDeclaration() && cd) | |
| 1294 { | |
| 79 | 1295 for (int i = 0; i < cd.fields.dim; i++) |
| 1296 { VarDeclaration v = cast(VarDeclaration)cd.fields[i]; | |
| 1297 | |
| 1298 v.ctorinit = 0; | |
| 1299 } | |
| 0 | 1300 } |
| 1301 | |
| 1302 if (inferRetType || f.retStyle() != RET.RETstack) | |
| 1303 nrvo_can = 0; | |
| 1304 | |
| 1305 fbody = fbody.semantic(sc2); | |
| 1306 if (!fbody) | |
| 1307 fbody = new CompoundStatement(Loc(0), new Statements()); | |
| 1308 | |
| 1309 if (inferRetType) | |
| 1310 { // If no return type inferred yet, then infer a void | |
| 1311 if (!type.nextOf()) | |
| 1312 { | |
| 1313 (cast(TypeFunction)type).next = Type.tvoid; | |
| 1314 type = type.semantic(loc, sc); | |
| 1315 } | |
| 1316 f = cast(TypeFunction)type; | |
| 1317 } | |
| 1318 | |
| 1319 if (isStaticCtorDeclaration()) | |
| 1320 { | |
| 1321 /* It's a static constructor. Ensure that all | |
| 1322 * ctor consts were initialized. | |
| 1323 */ | |
| 1324 | |
| 1325 Dsymbol p = toParent(); | |
| 1326 ScopeDsymbol add = p.isScopeDsymbol(); | |
| 1327 if (!add) | |
| 1328 { | |
| 1329 error("static constructor can only be member of struct/class/module, not %s %s", p.kind(), p.toChars()); | |
| 1330 } | |
| 1331 else | |
| 1332 { | |
|
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1333 foreach (Dsymbol s; add.members) |
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1334 { |
| 0 | 1335 s.checkCtorConstInit(); |
| 1336 } | |
| 1337 } | |
| 1338 } | |
| 1339 | |
| 1340 if (isCtorDeclaration() && cd) | |
| 1341 { | |
| 1342 //printf("callSuper = x%x\n", sc2.callSuper); | |
| 1343 | |
| 1344 // Verify that all the ctorinit fields got initialized | |
| 1345 if (!(sc2.callSuper & CSX.CSXthis_ctor)) | |
| 1346 { | |
| 1347 for (int i = 0; i < cd.fields.dim; i++) | |
| 79 | 1348 { VarDeclaration v = cast(VarDeclaration)cd.fields[i]; |
| 0 | 1349 |
| 1350 if (v.ctorinit == 0 && v.isCtorinit()) | |
| 1351 error("missing initializer for final field %s", v.toChars()); | |
| 1352 } | |
| 1353 } | |
| 1354 | |
| 1355 if (!(sc2.callSuper & CSX.CSXany_ctor) && | |
| 1356 cd.baseClass && cd.baseClass.ctor) | |
| 1357 { | |
| 1358 sc2.callSuper = 0; | |
| 1359 | |
| 1360 // Insert implicit super() at start of fbody | |
| 1361 Expression e1 = new SuperExp(Loc(0)); | |
| 1362 Expression e = new CallExp(Loc(0), e1); | |
| 1363 | |
| 1364 e = e.trySemantic(sc2); | |
| 1365 if (!e) | |
| 1366 error("no match for implicit super() call in constructor"); | |
| 1367 else | |
| 1368 { | |
| 1369 Statement s = new ExpStatement(Loc(0), e); | |
| 1370 fbody = new CompoundStatement(Loc(0), s, fbody); | |
| 1371 } | |
| 1372 } | |
| 1373 } | |
| 1374 else if (fes) | |
| 1375 { // For foreach(){} body, append a return 0; | |
| 1376 Expression e = new IntegerExp(0); | |
| 1377 Statement s = new ReturnStatement(Loc(0), e); | |
| 1378 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1379 assert(!returnLabel); | |
| 1380 } | |
| 1381 else if (!hasReturnExp && type.nextOf().ty != TY.Tvoid) | |
| 1382 error("expected to return a value of type %s", type.nextOf().toChars()); | |
| 1383 else if (!inlineAsm) | |
| 1384 { | |
| 1385 version (DMDV2) { | |
| 1386 BE blockexit = fbody ? fbody.blockExit() : BE.BEfallthru; | |
| 1387 if (f.isnothrow && blockexit & BE.BEthrow) | |
| 1388 error("'%s' is nothrow yet may throw", toChars()); | |
| 1389 | |
| 1390 int offend = blockexit & BE.BEfallthru; | |
| 1391 } | |
| 1392 if (type.nextOf().ty == TY.Tvoid) | |
| 1393 { | |
| 1394 if (offend && isMain()) | |
| 1395 { // Add a return 0; statement | |
| 1396 Statement s = new ReturnStatement(Loc(0), new IntegerExp(0)); | |
| 1397 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1398 } | |
| 1399 } | |
| 1400 else | |
| 1401 { | |
| 1402 if (offend) | |
| 1403 { | |
| 1404 Expression e; | |
| 1405 version (DMDV1) { | |
| 1406 warning(loc, "no return exp; or assert(0); at end of function"); | |
| 1407 } else { | |
| 1408 error("no return exp; or assert(0); at end of function"); | |
| 1409 } | |
| 1410 if (global.params.useAssert && | |
| 1411 !global.params.useInline) | |
| 1412 { /* Add an assert(0, msg); where the missing return | |
| 1413 * should be. | |
| 1414 */ | |
| 1415 e = new AssertExp( | |
| 1416 endloc, | |
| 1417 new IntegerExp(0), | |
| 1418 new StringExp(loc, "missing return expression") | |
| 1419 ); | |
| 1420 } | |
| 1421 else | |
| 1422 e = new HaltExp(endloc); | |
| 1423 | |
| 1424 e = new CommaExp(Loc(0), e, type.nextOf().defaultInit(Loc(0))); | |
| 1425 e = e.semantic(sc2); | |
| 1426 Statement s = new ExpStatement(Loc(0), e); | |
| 1427 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1428 } | |
| 1429 } | |
| 1430 } | |
| 1431 } | |
| 1432 | |
| 1433 { | |
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1434 auto a = new Statements(); |
| 0 | 1435 |
| 1436 // Merge in initialization of 'out' parameters | |
| 1437 if (parameters) | |
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1438 { foreach (Dsymbol s; parameters) |
| 0 | 1439 { |
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1440 auto v = cast(VarDeclaration)s; |
| 0 | 1441 if (v.storage_class & STC.STCout) |
| 1442 { | |
| 1443 assert(v.init); | |
| 1444 ExpInitializer ie = v.init.isExpInitializer(); | |
| 1445 assert(ie); | |
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1446 a.push(new ExpStatement(Loc(0), ie.exp)); |
| 0 | 1447 } |
| 1448 } | |
| 1449 } | |
| 1450 | |
| 1451 if (argptr) | |
| 1452 { // Initialize _argptr to point past non-variadic arg | |
| 1453 version (IN_GCC) { | |
| 73 | 1454 // Handled in FuncDeclaration.toObjFile |
| 1455 v_argptr = argptr; | |
| 1456 v_argptr.init = new VoidInitializer(loc); | |
| 0 | 1457 } else { |
| 73 | 1458 Type t = argptr.type; |
| 1459 VarDeclaration p; | |
| 1460 uint offset; | |
| 1461 | |
| 1462 Expression e1 = new VarExp(Loc(0), argptr); | |
| 1463 if (parameters && parameters.dim) | |
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1464 p = cast(VarDeclaration)parameters[parameters.length - 1]; |
| 73 | 1465 else |
| 1466 p = v_arguments; // last parameter is _arguments[] | |
| 1467 if (p.storage_class & STClazy) | |
| 1468 // If the last parameter is lazy, it's the size of a delegate | |
| 1469 offset = PTRSIZE * 2; | |
| 1470 else | |
| 1471 offset = cast(size_t)p.type.size(); | |
| 1472 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
| 1473 Expression e = new SymOffExp(Loc(0), p, offset); | |
| 1474 e = new AssignExp(Loc(0), e1, e); | |
| 1475 e.type = t; | |
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1476 a.push(new ExpStatement(Loc(0), e)); |
| 98 | 1477 p.isargptr = true; |
| 0 | 1478 } |
| 1479 } | |
| 1480 | |
| 1481 if (_arguments) | |
| 1482 { | |
| 1483 /* Advance to elements[] member of TypeInfo_Tuple with: | |
| 1484 * _arguments = v_arguments.elements; | |
| 1485 */ | |
| 1486 Expression e = new VarExp(Loc(0), v_arguments); | |
| 1487 e = new DotIdExp(Loc(0), e, Id.elements); | |
| 1488 Expression e1 = new VarExp(Loc(0), _arguments); | |
| 1489 e = new AssignExp(Loc(0), e1, e); | |
| 1490 e.op = TOK.TOKconstruct; | |
| 1491 e = e.semantic(sc2); | |
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1492 a.push(new ExpStatement(Loc(0), e)); |
| 0 | 1493 } |
| 1494 | |
| 1495 // Merge contracts together with body into one compound statement | |
| 1496 | |
| 1497 version (_DH) { | |
| 1498 if (frequire && global.params.useIn) | |
| 1499 { frequire.incontract = 1; | |
| 1500 a.push(frequire); | |
| 1501 } | |
| 1502 } else { | |
| 1503 if (frequire && global.params.useIn) | |
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1504 a.push(frequire); |
| 0 | 1505 } |
| 1506 | |
| 1507 // Precondition invariant | |
| 1508 if (addPreInvariant()) | |
| 1509 { | |
| 1510 Expression e = null; | |
| 1511 if (isDtorDeclaration()) | |
| 1512 { | |
| 1513 // Call invariant directly only if it exists | |
| 1514 InvariantDeclaration inv = ad.inv; | |
| 1515 ClassDeclaration cd = ad.isClassDeclaration(); | |
| 1516 | |
| 1517 while (!inv && cd) | |
| 1518 { | |
| 1519 cd = cd.baseClass; | |
| 1520 if (!cd) | |
| 1521 break; | |
| 1522 inv = cd.inv; | |
| 1523 } | |
| 1524 if (inv) | |
| 1525 { | |
| 1526 e = new DsymbolExp(Loc(0), inv); | |
| 1527 e = new CallExp(Loc(0), e); | |
| 1528 e = e.semantic(sc2); | |
| 1529 } | |
| 1530 } | |
| 1531 else | |
| 1532 { // Call invariant virtually | |
| 1533 Expression v = new ThisExp(Loc(0)); | |
| 1534 v.type = vthis.type; | |
| 1535 version (STRUCTTHISREF) { | |
| 1536 if (ad.isStructDeclaration()) | |
| 1537 v = v.addressOf(sc); | |
| 1538 } | |
| 1539 Expression se = new StringExp(Loc(0), "null this"); | |
| 1540 se = se.semantic(sc); | |
| 1541 se.type = Type.tchar.arrayOf(); | |
| 1542 e = new AssertExp(loc, v, se); | |
| 1543 } | |
| 1544 if (e) | |
| 1545 { | |
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1546 auto s = new ExpStatement(Loc(0), e); |
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1547 a.push(s); |
| 0 | 1548 } |
| 1549 } | |
| 1550 | |
| 1551 if (fbody) | |
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1552 a.push(fbody); |
| 0 | 1553 |
| 1554 if (fensure) | |
| 1555 { | |
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1556 a.push(returnLabel.statement); |
| 0 | 1557 |
| 1558 if (type.nextOf().ty != TY.Tvoid) | |
| 1559 { | |
| 1560 // Create: return vresult; | |
| 1561 assert(vresult); | |
| 1562 Expression e = new VarExp(Loc(0), vresult); | |
| 1563 if (tintro) | |
| 1564 { e = e.implicitCastTo(sc, tintro.nextOf()); | |
| 1565 e = e.semantic(sc); | |
| 1566 } | |
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1567 auto s = new ReturnStatement(Loc(0), e); |
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1568 a.push(s); |
| 0 | 1569 } |
| 1570 } | |
| 1571 | |
| 1572 fbody = new CompoundStatement(Loc(0), a); | |
| 1573 version (DMDV2) { | |
| 1574 /* Append destructor calls for parameters as finally blocks. | |
| 1575 */ | |
| 1576 if (parameters) | |
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1577 { foreach(Dsymbol symb; parameters) |
| 0 | 1578 { |
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1579 auto v = cast(VarDeclaration)symb; |
| 0 | 1580 |
| 1581 if (v.storage_class & (STC.STCref | STC.STCout)) | |
| 1582 continue; | |
| 1583 | |
| 1584 /* Don't do this for static arrays, since static | |
| 1585 * arrays are called by reference. Remove this | |
| 1586 * when we change them to call by value. | |
| 1587 */ | |
| 1588 if (v.type.toBasetype().ty == TY.Tsarray) | |
| 1589 continue; | |
| 1590 | |
| 1591 Expression e = v.callAutoDtor(sc); | |
| 1592 if (e) | |
| 1593 { Statement s = new ExpStatement(Loc(0), e); | |
| 1594 s = s.semantic(sc); | |
| 1595 if (fbody.blockExit() == BE.BEfallthru) | |
| 1596 fbody = new CompoundStatement(Loc(0), fbody, s); | |
| 1597 else | |
| 1598 fbody = new TryFinallyStatement(Loc(0), fbody, s); | |
| 1599 } | |
| 1600 } | |
| 1601 } | |
| 1602 } | |
| 1603 | |
| 1604 static if (true) { | |
| 1605 if (isSynchronized()) | |
| 1606 { /* Wrap the entire function body in a synchronized statement | |
| 1607 */ | |
| 1608 ClassDeclaration cd = parent.isClassDeclaration(); | |
| 1609 if (cd) | |
| 1610 { | |
| 1611 ///version (TARGET_WINDOS) { | |
| 1612 if (/*config.flags2 & CFG2.CFG2seh &&*/ // always on for WINDOS | |
| 1613 !isStatic() && !fbody.usesEH()) | |
| 1614 { | |
| 1615 /* The back end uses the "jmonitor" hack for syncing; | |
| 1616 * no need to do the sync at this level. | |
| 1617 */ | |
| 1618 } | |
| 1619 else | |
| 1620 ///} | |
| 1621 { | |
| 1622 Expression vsync; | |
| 1623 if (isStatic()) | |
| 1624 { | |
| 1625 // The monitor is in the ClassInfo | |
| 1626 vsync = new DotIdExp(loc, new DsymbolExp(loc, cd), Id.classinfo_); | |
| 1627 } | |
| 1628 else | |
| 1629 { // 'this' is the monitor | |
| 1630 vsync = new VarExp(loc, vthis); | |
| 1631 } | |
| 1632 fbody = new PeelStatement(fbody); // don't redo semantic() | |
| 1633 fbody = new SynchronizedStatement(loc, vsync, fbody); | |
| 1634 fbody = fbody.semantic(sc2); | |
| 1635 } | |
| 1636 } | |
| 1637 else | |
| 1638 { | |
| 1639 error("synchronized function %s must be a member of a class", toChars()); | |
| 1640 } | |
| 1641 } | |
| 1642 } | |
| 1643 } | |
| 1644 | |
| 1645 sc2.callSuper = 0; | |
| 1646 sc2.pop(); | |
| 1647 } | |
| 1648 semanticRun = 4; | |
| 1649 } | |
| 1650 | |
| 1651 // called from semantic3 | |
| 1652 void varArgs(Scope sc, TypeFunction, ref VarDeclaration, ref VarDeclaration) | |
| 1653 { | |
| 1654 assert(false); | |
| 1655 } | |
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1656 |
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1657 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 1658 { |
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|
1659 // writef("FuncDeclaration.toCBuffer() '%s'\n", toChars()); |
|
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1660 |
|
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|
1661 StorageClassDeclaration.stcToCBuffer(buf, storage_class); |
|
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|
1662 type.toCBuffer(buf, ident, hgs); |
|
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diff
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|
1663 bodyToCBuffer(buf, hgs); |
| 0 | 1664 } |
| 1665 | |
|
93
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|
1666 void bodyToCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 1667 { |
|
93
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|
1668 if (fbody && |
|
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diff
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|
1669 (!hgs.hdrgen || hgs.tpltMember || canInline(1,1)) |
|
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|
1670 ) |
|
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|
1671 { |
|
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|
1672 buf.writenl(); |
|
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diff
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|
1673 |
|
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|
1674 // in{} |
|
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|
1675 if (frequire) |
|
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|
1676 { |
|
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|
1677 buf.writestring("in"); |
|
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diff
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|
1678 buf.writenl(); |
|
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diff
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|
1679 frequire.toCBuffer(buf, hgs); |
|
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|
1680 } |
|
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|
1681 |
|
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|
1682 // out{} |
|
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|
1683 if (fensure) |
|
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|
1684 { |
|
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|
1685 buf.writestring("out"); |
|
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|
1686 if (outId) |
|
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|
1687 { |
|
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|
1688 buf.writebyte('('); |
|
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|
1689 buf.writestring(outId.toChars()); |
|
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|
1690 buf.writebyte(')'); |
|
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|
1691 } |
|
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1692 buf.writenl(); |
|
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1693 fensure.toCBuffer(buf, hgs); |
|
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1694 } |
|
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1695 |
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1696 if (frequire || fensure) |
|
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1697 { |
|
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1698 buf.writestring("body"); |
|
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1699 buf.writenl(); |
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1700 } |
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1701 |
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1702 buf.writebyte('{'); |
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1703 buf.writenl(); |
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1704 fbody.toCBuffer(buf, hgs); |
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1705 buf.writebyte('}'); |
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1706 buf.writenl(); |
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1707 } |
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1708 else |
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1709 { buf.writeByte(';'); |
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1710 buf.writenl(); |
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1711 } |
| 0 | 1712 } |
| 1713 | |
| 1714 /**************************************************** | |
| 1715 * Determine if 'this' overrides fd. | |
| 1716 * Return true if it does. | |
| 1717 */ | |
| 1718 bool overrides(FuncDeclaration fd) | |
| 1719 { | |
| 1720 bool result = false; | |
| 1721 | |
| 1722 if (fd.ident == ident) | |
| 1723 { | |
| 1724 int cov = type.covariant(fd.type); | |
| 1725 if (cov) | |
| 1726 { | |
| 1727 ClassDeclaration cd1 = toParent().isClassDeclaration(); | |
| 1728 ClassDeclaration cd2 = fd.toParent().isClassDeclaration(); | |
| 1729 | |
| 1730 if (cd1 && cd2 && cd2.isBaseOf(cd1, null)) | |
| 1731 result = true; | |
| 1732 } | |
| 1733 } | |
| 1734 return result; | |
| 1735 } | |
| 1736 | |
| 1737 /************************************************* | |
| 1738 * Find index of function in vtbl[0..dim] that | |
| 1739 * this function overrides. | |
| 1740 * Returns: | |
| 1741 * -1 didn't find one | |
| 1742 * -2 can't determine because of forward references | |
| 1743 */ | |
| 1744 int findVtblIndex(Array vtbl, int dim) | |
| 1745 { | |
| 1746 for (int vi = 0; vi < dim; vi++) | |
| 1747 { | |
| 1748 FuncDeclaration fdv = (cast(Dsymbol)vtbl.data[vi]).isFuncDeclaration(); | |
| 1749 if (fdv && fdv.ident is ident) | |
| 1750 { | |
| 1751 int cov = type.covariant(fdv.type); | |
| 1752 //printf("\tbaseclass cov = %d\n", cov); | |
| 1753 switch (cov) | |
| 1754 { | |
| 1755 case 0: // types are distinct | |
| 1756 break; | |
| 1757 | |
| 1758 case 1: | |
| 1759 return vi; | |
| 1760 | |
| 1761 case 2: | |
| 1762 //type.print(); | |
| 1763 //fdv.type.print(); | |
| 1764 //printf("%s %s\n", type.deco, fdv.type.deco); | |
| 1765 error("of type %s overrides but is not covariant with %s of type %s", | |
| 1766 type.toChars(), fdv.toPrettyChars(), fdv.type.toChars()); | |
| 1767 break; | |
| 1768 | |
| 1769 case 3: | |
| 1770 return -2; // forward references | |
| 1771 } | |
| 1772 } | |
| 1773 } | |
| 1774 return -1; | |
| 1775 } | |
| 1776 | |
| 1777 /**************************************************** | |
| 1778 * Overload this FuncDeclaration with the new one f. | |
| 1779 * Return !=0 if successful; i.e. no conflict. | |
| 1780 */ | |
| 72 | 1781 override bool overloadInsert(Dsymbol s) |
| 0 | 1782 { |
| 1783 FuncDeclaration f; | |
| 1784 AliasDeclaration a; | |
| 1785 | |
| 1786 //writef("FuncDeclaration.overloadInsert(%s)\n", s.toChars()); | |
| 1787 a = s.isAliasDeclaration(); | |
| 1788 if (a) | |
| 1789 { | |
| 1790 if (overnext) | |
| 1791 return overnext.overloadInsert(a); | |
| 1792 | |
| 1793 if (!a.aliassym && a.type.ty != TY.Tident && a.type.ty != TY.Tinstance) | |
| 1794 { | |
| 1795 //writef("\ta = '%s'\n", a.type.toChars()); | |
| 1796 return false; | |
| 1797 } | |
| 1798 overnext = a; | |
| 1799 //printf("\ttrue: no conflict\n"); | |
| 1800 return true; | |
| 1801 } | |
| 1802 f = s.isFuncDeclaration(); | |
| 1803 if (!f) | |
| 1804 return false; | |
| 1805 | |
| 1806 static if (false) { | |
| 1807 /* Disable this check because: | |
| 1808 * const void foo(); | |
| 1809 * semantic() isn't run yet on foo(), so the const hasn't been | |
| 1810 * applied yet. | |
| 1811 */ | |
| 1812 if (type) | |
| 1813 { | |
| 1814 printf("type = %s\n", type.toChars()); | |
| 1815 printf("f.type = %s\n", f.type.toChars()); | |
| 1816 } | |
| 1817 if (type && f.type && // can be null for overloaded constructors | |
| 1818 f.type.covariant(type) && | |
| 1819 f.type.mod == type.mod && | |
| 1820 !isFuncAliasDeclaration()) | |
| 1821 { | |
| 1822 //printf("\tfalse: conflict %s\n", kind()); | |
| 1823 return false; | |
| 1824 } | |
| 1825 } | |
| 1826 | |
| 1827 if (overnext) | |
| 1828 return overnext.overloadInsert(f); | |
| 1829 overnext = f; | |
| 1830 //printf("\ttrue: no conflict\n"); | |
| 1831 return true; | |
| 1832 } | |
| 1833 | |
| 1834 FuncDeclaration overloadExactMatch(Type t) | |
| 1835 { | |
| 1836 Param1 p; | |
| 1837 p.t = t; | |
| 1838 p.f = null; | |
|
17
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14
diff
changeset
|
1839 overloadApply(this, &p.fp1, &p); |
| 0 | 1840 return p.f; |
| 1841 } | |
| 1842 | |
| 1843 FuncDeclaration overloadResolve(Loc loc, Expression ethis, Expressions arguments, int flags = 0) | |
| 1844 { | |
| 1845 TypeFunction tf; | |
| 1846 Match m; | |
| 1847 | |
| 1848 static if (false) { | |
| 1849 printf("FuncDeclaration.overloadResolve('%s')\n", toChars()); | |
| 1850 if (arguments) | |
| 1851 { | |
| 1852 int i; | |
| 1853 | |
| 1854 for (i = 0; i < arguments.dim; i++) | |
| 1855 { | |
| 1856 Expression arg; | |
| 1857 | |
| 1858 arg = cast(Expression)arguments.data[i]; | |
| 1859 assert(arg.type); | |
| 1860 printf("\t%s: ", arg.toChars()); | |
| 1861 arg.type.print(); | |
| 1862 } | |
| 1863 } | |
| 1864 } | |
| 1865 | |
| 1866 m.last = MATCH.MATCHnomatch; | |
| 1867 overloadResolveX(&m, this, ethis, arguments); | |
| 1868 | |
| 1869 if (m.count == 1) // exactly one match | |
| 1870 { | |
| 1871 return m.lastf; | |
| 1872 } | |
| 1873 else | |
| 1874 { | |
| 1875 scope OutBuffer buf = new OutBuffer(); | |
| 1876 | |
| 1877 buf.writeByte('('); | |
| 1878 if (arguments) | |
| 1879 { | |
| 1880 HdrGenState hgs; | |
| 1881 | |
| 1882 argExpTypesToCBuffer(buf, arguments, &hgs); | |
| 1883 buf.writeByte(')'); | |
| 1884 if (ethis) | |
| 1885 ethis.type.modToBuffer(buf); | |
| 1886 } | |
| 1887 else | |
| 1888 buf.writeByte(')'); | |
| 1889 | |
| 1890 if (m.last == MATCH.MATCHnomatch) | |
| 1891 { | |
| 1892 if (flags & 1) // if do not print error messages | |
| 1893 return null; // no match | |
| 1894 | |
| 1895 tf = cast(TypeFunction)type; | |
| 1896 | |
| 1897 scope OutBuffer buf2 = new OutBuffer(); | |
| 1898 tf.modToBuffer(buf2); | |
| 1899 | |
| 1900 //printf("tf = %s, args = %s\n", tf.deco, ((Expression *)arguments.data[0]).type.deco); | |
| 1901 error(loc, "%s%s is not callable using argument types %s", | |
| 1902 Argument.argsTypesToChars(tf.parameters, tf.varargs), | |
| 1903 buf2.toChars(), | |
| 1904 buf.toChars()); | |
| 1905 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
| 1906 } | |
| 1907 else | |
| 1908 { | |
| 1909 static if (true) { | |
| 1910 TypeFunction t1 = cast(TypeFunction)m.lastf.type; | |
| 1911 TypeFunction t2 = cast(TypeFunction)m.nextf.type; | |
| 1912 | |
| 1913 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
| 1914 buf.toChars(), | |
| 1915 m.lastf.toPrettyChars(), Argument.argsTypesToChars(t1.parameters, t1.varargs), | |
| 1916 m.nextf.toPrettyChars(), Argument.argsTypesToChars(t2.parameters, t2.varargs)); | |
| 1917 } else { | |
| 1918 error(loc, "overloads %s and %s both match argument list for %s", | |
| 1919 m.lastf.type.toChars(), | |
| 1920 m.nextf.type.toChars(), | |
| 1921 m.lastf.toChars()); | |
| 1922 } | |
| 1923 return m.lastf; | |
| 1924 } | |
| 1925 } | |
| 1926 } | |
| 1927 | |
| 1928 /************************************* | |
| 1929 * Determine partial specialization order of 'this' vs g. | |
| 1930 * This is very similar to TemplateDeclaration.leastAsSpecialized(). | |
| 1931 * Returns: | |
| 1932 * match 'this' is at least as specialized as g | |
| 1933 * 0 g is more specialized than 'this' | |
| 1934 */ | |
| 1935 MATCH leastAsSpecialized(FuncDeclaration g) | |
| 1936 { | |
| 1937 version (LOG_LEASTAS) { | |
| 1938 printf("%s.leastAsSpecialized(%s)\n", toChars(), g.toChars()); | |
| 1939 } | |
| 1940 | |
| 1941 /* This works by calling g() with f()'s parameters, and | |
| 1942 * if that is possible, then f() is at least as specialized | |
| 1943 * as g() is. | |
| 1944 */ | |
| 1945 | |
| 1946 TypeFunction tf = cast(TypeFunction)type; | |
| 1947 TypeFunction tg = cast(TypeFunction)g.type; | |
| 1948 size_t nfparams = Argument.dim(tf.parameters); | |
| 1949 size_t ngparams = Argument.dim(tg.parameters); | |
| 1950 MATCH match = MATCHexact; | |
| 1951 | |
| 1952 /* If both functions have a 'this' pointer, and the mods are not | |
| 1953 * the same and g's is not const, then this is less specialized. | |
| 1954 */ | |
| 1955 if (needThis() && g.needThis()) | |
| 1956 { | |
| 1957 if (tf.mod != tg.mod) | |
| 1958 { | |
| 1959 if (tg.mod == MODconst) | |
| 1960 match = MATCHconst; | |
| 1961 else | |
| 1962 return MATCHnomatch; | |
| 1963 } | |
| 1964 } | |
| 1965 | |
| 1966 /* Create a dummy array of arguments out of the parameters to f() | |
| 1967 */ | |
| 1968 scope Expressions args = new Expressions(); | |
| 1969 args.setDim(nfparams); | |
| 1970 for (int u = 0; u < nfparams; u++) | |
| 1971 { | |
| 1972 Argument p = Argument.getNth(tf.parameters, u); | |
| 1973 Expression e; | |
| 1974 if (p.storageClass & (STCref | STCout)) | |
| 1975 { | |
| 1976 e = new IdentifierExp(Loc(0), p.ident); | |
| 1977 e.type = p.type; | |
| 1978 } | |
| 1979 else | |
| 1980 e = p.type.defaultInit(Loc(0)); | |
| 1981 | |
|
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79
diff
changeset
|
1982 args[u] = e; |
| 0 | 1983 } |
| 1984 | |
| 1985 MATCH m = cast(MATCH) tg.callMatch(null, args); | |
| 1986 if (m) | |
| 1987 { | |
| 1988 /* A variadic parameter list is less specialized than a | |
| 1989 * non-variadic one. | |
| 1990 */ | |
| 1991 if (tf.varargs && !tg.varargs) | |
| 1992 goto L1; // less specialized | |
| 1993 | |
| 1994 version (LOG_LEASTAS) { | |
| 1995 printf(" matches %d, so is least as specialized\n", m); | |
| 1996 } | |
| 1997 return m; | |
| 1998 } | |
| 1999 L1: | |
| 2000 version (LOG_LEASTAS) { | |
| 2001 printf(" doesn't match, so is not as specialized\n"); | |
| 2002 } | |
| 2003 return MATCHnomatch; | |
| 2004 } | |
| 72 | 2005 |
| 0 | 2006 /******************************** |
| 2007 * Labels are in a separate scope, one per function. | |
| 2008 */ | |
| 2009 LabelDsymbol searchLabel(Identifier ident) | |
| 2010 { | |
| 2011 Dsymbol s; | |
| 2012 | |
| 2013 if (!labtab) | |
| 2014 labtab = new DsymbolTable(); // guess we need one | |
| 2015 | |
| 2016 s = labtab.lookup(ident); | |
| 2017 if (!s) | |
| 2018 { | |
| 2019 s = new LabelDsymbol(ident); | |
| 2020 labtab.insert(s); | |
| 2021 } | |
| 2022 | |
| 2023 return cast(LabelDsymbol)s; | |
| 2024 } | |
| 2025 | |
| 2026 /**************************************** | |
| 2027 * If non-static member function that has a 'this' pointer, | |
| 2028 * return the aggregate it is a member of. | |
| 2029 * Otherwise, return null. | |
| 2030 */ | |
| 72 | 2031 override AggregateDeclaration isThis() |
| 0 | 2032 { |
| 2033 AggregateDeclaration ad = null; | |
| 2034 | |
| 2035 //printf("+FuncDeclaration.isThis() '%s'\n", toChars()); | |
| 2036 if ((storage_class & STC.STCstatic) == 0) | |
| 2037 { | |
| 2038 ad = isMember2(); | |
| 2039 } | |
| 2040 //printf("-FuncDeclaration.isThis() %p\n", ad); | |
| 2041 return ad; | |
| 2042 } | |
| 2043 | |
| 2044 AggregateDeclaration isMember2() | |
| 2045 { | |
| 2046 AggregateDeclaration ad = null; | |
| 2047 | |
| 2048 //printf("+FuncDeclaration.isMember2() '%s'\n", toChars()); | |
| 2049 for (Dsymbol s = this; s; s = s.parent) | |
| 2050 { | |
| 2051 //printf("\ts = '%s', parent = '%s', kind = %s\n", s.toChars(), s.parent.toChars(), s.parent.kind()); | |
| 2052 ad = s.isMember(); | |
| 2053 if (ad) | |
| 2054 { //printf("test4\n"); | |
| 2055 break; | |
| 2056 } | |
| 2057 if (!s.parent || (!s.parent.isTemplateInstance())) | |
| 2058 { //printf("test5\n"); | |
| 2059 break; | |
| 2060 } | |
| 2061 } | |
| 2062 //printf("-FuncDeclaration.isMember2() %p\n", ad); | |
| 2063 return ad; | |
| 2064 } | |
| 2065 | |
| 2066 /***************************************** | |
| 2067 * Determine lexical level difference from 'this' to nested function 'fd'. | |
| 2068 * Error if this cannot call fd. | |
| 2069 * Returns: | |
| 2070 * 0 same level | |
| 2071 * -1 increase nesting by 1 (fd is nested within 'this') | |
| 2072 * >0 decrease nesting by number | |
| 2073 */ | |
| 2074 int getLevel(Loc loc, FuncDeclaration fd) // lexical nesting level difference | |
| 2075 { | |
| 2076 int level; | |
| 2077 Dsymbol s; | |
| 2078 Dsymbol fdparent; | |
| 2079 | |
| 2080 //printf("FuncDeclaration.getLevel(fd = '%s')\n", fd.toChars()); | |
| 2081 fdparent = fd.toParent2(); | |
| 2082 if (fdparent == this) | |
| 2083 return -1; | |
| 2084 s = this; | |
| 2085 level = 0; | |
| 2086 while (fd != s && fdparent != s.toParent2()) | |
| 2087 { | |
| 2088 //printf("\ts = '%s'\n", s.toChars()); | |
| 2089 FuncDeclaration thisfd = s.isFuncDeclaration(); | |
| 2090 if (thisfd) | |
| 2091 { | |
| 2092 if (!thisfd.isNested() && !thisfd.vthis) | |
| 2093 goto Lerr; | |
| 2094 } | |
| 2095 else | |
| 2096 { | |
| 2097 AggregateDeclaration thiscd = s.isAggregateDeclaration(); | |
| 2098 if (thiscd) | |
| 2099 { | |
| 2100 if (!thiscd.isNested()) | |
| 2101 goto Lerr; | |
| 2102 } | |
| 2103 else | |
| 2104 goto Lerr; | |
| 2105 } | |
| 2106 | |
| 2107 s = s.toParent2(); | |
| 2108 assert(s); | |
| 2109 level++; | |
| 2110 } | |
| 2111 return level; | |
| 2112 | |
| 2113 Lerr: | |
| 2114 error(loc, "cannot access frame of function %s", fd.toChars()); | |
| 2115 return 1; | |
| 2116 } | |
| 2117 | |
| 2118 void appendExp(Expression e) | |
| 2119 { | |
| 2120 assert(false); | |
| 2121 } | |
| 2122 | |
| 2123 void appendState(Statement s) | |
| 2124 { | |
| 2125 assert(false); | |
| 2126 } | |
| 2127 | |
| 72 | 2128 override string mangle() |
| 0 | 2129 out (result) |
| 2130 { | |
| 2131 assert(result.length > 0); | |
| 2132 } | |
| 2133 body | |
| 2134 { | |
| 2135 if (isMain()) { | |
| 2136 return "_Dmain"; | |
| 2137 } | |
| 2138 | |
| 2139 if (isWinMain() || isDllMain() || ident == Id.tls_get_addr) | |
| 2140 return ident.toChars(); | |
| 2141 | |
| 2142 assert(this); | |
| 2143 | |
| 2144 return Declaration.mangle(); | |
| 2145 } | |
| 2146 | |
| 72 | 2147 override string toPrettyChars() |
| 0 | 2148 { |
| 2149 if (isMain()) | |
| 2150 return "D main"; | |
| 2151 else | |
| 2152 return Dsymbol.toPrettyChars(); | |
| 2153 } | |
| 2154 | |
| 2155 int isMain() | |
| 2156 { | |
| 2157 return ident is Id.main && linkage != LINK.LINKc && !isMember() && !isNested(); | |
| 2158 } | |
| 2159 | |
| 2160 int isWinMain() | |
| 2161 { | |
| 2162 //printf("FuncDeclaration::isWinMain() %s\n", toChars()); | |
| 2163 static if (false) { | |
| 2164 int x = ident == Id.WinMain && | |
| 2165 linkage != LINK.LINKc && !isMember(); | |
| 2166 printf("%s\n", x ? "yes" : "no"); | |
| 2167 return x; | |
| 2168 } else { | |
| 2169 return ident == Id.WinMain && linkage != LINK.LINKc && !isMember(); | |
| 2170 } | |
| 2171 } | |
| 2172 | |
| 2173 int isDllMain() | |
| 2174 { | |
| 2175 return ident == Id.DllMain && linkage != LINK.LINKc && !isMember(); | |
| 2176 } | |
| 2177 | |
| 2178 /********************************** | |
| 2179 * Determine if function is a builtin one that we can | |
| 2180 * evaluate at compile time. | |
| 2181 */ | |
| 2182 BUILTIN isBuiltin() | |
| 2183 { | |
| 2184 static string FeZe = "FNaNbeZe"; // pure nothrow real function(real) | |
| 2185 | |
| 2186 //printf("FuncDeclaration::isBuiltin() %s\n", toChars()); | |
| 2187 if (builtin == BUILTIN.BUILTINunknown) | |
| 2188 { | |
| 2189 builtin = BUILTIN.BUILTINnot; | |
| 2190 if (parent && parent.isModule()) | |
| 2191 { | |
| 2192 // If it's in the std.math package | |
| 2193 if (parent.ident == Id.math && parent.parent && parent.parent.ident == Id.std && !parent.parent.parent) | |
| 2194 { | |
| 2195 //printf("deco = %s\n", type.deco); | |
| 2196 if (type.deco == FeZe) | |
| 2197 { | |
| 2198 if (ident == Id.sin) | |
| 2199 builtin = BUILTIN.BUILTINsin; | |
| 2200 else if (ident == Id.cos) | |
| 2201 builtin = BUILTIN.BUILTINcos; | |
| 2202 else if (ident == Id.tan) | |
| 2203 builtin = BUILTIN.BUILTINtan; | |
| 2204 else if (ident == Id._sqrt) | |
| 2205 builtin = BUILTIN.BUILTINsqrt; | |
| 2206 else if (ident == Id.fabs) | |
| 2207 builtin = BUILTIN.BUILTINfabs; | |
| 2208 //printf("builtin = %d\n", builtin); | |
| 2209 } | |
| 2210 // if float or double versions | |
| 2211 else if (type.deco == "FNaNbdZd" || type.deco == "FNaNbfZf") | |
| 2212 { | |
| 2213 if (ident == Id._sqrt) | |
| 2214 builtin = BUILTIN.BUILTINsqrt; | |
| 2215 } | |
| 2216 } | |
| 2217 } | |
| 2218 } | |
| 2219 | |
| 2220 return builtin; | |
| 2221 } | |
| 2222 | |
| 72 | 2223 override bool isExport() |
| 0 | 2224 { |
| 2225 return protection == PROT.PROTexport; | |
| 2226 } | |
| 2227 | |
| 72 | 2228 override bool isImportedSymbol() |
| 0 | 2229 { |
| 2230 //printf("isImportedSymbol()\n"); | |
| 2231 //printf("protection = %d\n", protection); | |
| 2232 return (protection == PROT.PROTexport) && !fbody; | |
| 2233 } | |
| 2234 | |
| 72 | 2235 override bool isAbstract() |
| 0 | 2236 { |
| 2237 return (storage_class & STC.STCabstract) != 0; | |
| 2238 } | |
| 2239 | |
| 72 | 2240 override bool isCodeseg() |
| 0 | 2241 { |
|
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|
2242 return true; // functions are always in the code segment |
| 0 | 2243 } |
| 2244 | |
| 72 | 2245 override bool isOverloadable() |
| 0 | 2246 { |
| 63 | 2247 return 1; // functions can be overloaded |
| 0 | 2248 } |
| 2249 | |
| 2250 bool isPure() | |
| 2251 { | |
| 2252 //printf("FuncDeclaration::isPure() '%s'\n", toChars()); | |
| 2253 assert(type.ty == TY.Tfunction); | |
| 2254 return (cast(TypeFunction)this.type).ispure; | |
| 2255 } | |
| 2256 | |
| 2257 bool isNested() | |
| 2258 { | |
| 2259 //if (!toParent()) | |
| 2260 //printf("FuncDeclaration.isNested('%s') parent=%p\n", toChars(), parent); | |
| 2261 //printf("\ttoParent2() = '%s'\n", toParent2().toChars()); | |
| 2262 return ((storage_class & STC.STCstatic) == 0) && | |
| 2263 (toParent2().isFuncDeclaration() !is null); | |
| 2264 } | |
| 2265 | |
| 72 | 2266 override bool needThis() |
| 0 | 2267 { |
| 2268 //printf("FuncDeclaration.needThis() '%s'\n", toChars()); | |
| 2269 bool needThis = isThis() !is null; | |
| 2270 | |
| 2271 //printf("\t%d\n", i); | |
| 2272 if (!needThis) { | |
| 2273 if (auto fa = isFuncAliasDeclaration()) { | |
| 2274 needThis = fa.funcalias.needThis(); | |
| 2275 } | |
| 2276 } | |
| 2277 | |
| 2278 return needThis; | |
| 2279 } | |
| 2280 | |
| 2281 bool isVirtual() | |
| 2282 { | |
| 2283 static if (false) { | |
| 2284 printf("FuncDeclaration.isVirtual(%s)\n", toChars()); | |
| 2285 printf("isMember:%p isStatic:%d private:%d ctor:%d !Dlinkage:%d\n", isMember(), isStatic(), protection == PROT.PROTprivate, isCtorDeclaration(), linkage != LINK.LINKd); | |
| 2286 printf("result is %d\n", | |
| 2287 isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && toParent().isClassDeclaration()); | |
| 2288 } | |
| 2289 return isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && toParent().isClassDeclaration(); | |
| 2290 } | |
| 2291 | |
| 72 | 2292 override int isFinal() |
| 0 | 2293 { |
| 2294 ClassDeclaration cd; | |
| 2295 static if (false) { | |
| 2296 printf("FuncDeclaration.isFinal(%s)\n", toChars()); | |
| 2297 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROT.PROTprivate, isCtorDeclaration(), linkage != LINK.LINKd); | |
| 2298 printf("result is %d\n", | |
| 2299 isMember() && !(isStatic() || protection == PROT.PROTprivate || protection == PROT.PROTpackage) && (cd = toParent().isClassDeclaration()) !is null && cd.storage_class & STC.STCfinal); | |
| 2300 } | |
| 2301 return isMember() && (Declaration.isFinal() || ((cd = toParent().isClassDeclaration()) !is null && cd.storage_class & STC.STCfinal)); | |
| 2302 } | |
| 2303 | |
| 2304 bool addPreInvariant() | |
| 2305 { | |
| 2306 AggregateDeclaration ad = isThis(); | |
| 2307 return (ad && | |
| 2308 //ad.isClassDeclaration() && | |
| 2309 global.params.useInvariants && | |
| 2310 (protection == PROT.PROTpublic || protection == PROT.PROTexport) && | |
| 2311 !naked && | |
| 2312 ident !is Id.cpctor); | |
| 2313 } | |
| 2314 | |
| 2315 bool addPostInvariant() | |
| 2316 { | |
| 2317 AggregateDeclaration ad = isThis(); | |
| 2318 return (ad && ad.inv && | |
| 2319 //ad.isClassDeclaration() && | |
| 2320 global.params.useInvariants && | |
| 2321 (protection == PROT.PROTpublic || protection == PROT.PROTexport) && | |
| 2322 !naked && | |
| 2323 ident !is Id.cpctor); | |
| 2324 } | |
| 2325 | |
| 63 | 2326 /************************************* |
| 2327 * Attempt to interpret a function given the arguments. | |
| 2328 * Input: | |
| 2329 * istate state for calling function (null if none) | |
| 2330 * arguments function arguments | |
| 2331 * thisarg 'this', if a needThis() function, null if not. | |
| 2332 * | |
| 2333 * Return result expression if successful, null if not. | |
| 2334 */ | |
| 2335 Expression interpret(InterState istate, Expressions arguments, Expression thisarg = null) | |
| 0 | 2336 { |
| 63 | 2337 version (LOG) { |
| 2338 printf("\n********\nFuncDeclaration.interpret(istate = %p) %s\n", istate, toChars()); | |
| 2339 printf("cantInterpret = %d, semanticRun = %d\n", cantInterpret, semanticRun); | |
| 2340 } | |
| 2341 if (global.errors) | |
| 2342 return null; | |
| 107 | 2343 version(DMDV1) |
| 2344 { | |
| 63 | 2345 if (ident == Id.aaLen) |
| 2346 return interpret_aaLen(istate, arguments); | |
| 2347 else if (ident == Id.aaKeys) | |
| 2348 return interpret_aaKeys(istate, arguments); | |
| 2349 else if (ident == Id.aaValues) | |
| 2350 return interpret_aaValues(istate, arguments); | |
| 107 | 2351 } |
| 2352 else version(DMDV2) | |
| 2353 { | |
| 2354 if (thisarg && (!arguments || arguments.dim == 0)) | |
| 2355 { | |
| 2356 if (ident == Id.length) | |
| 2357 return interpret_length(istate, thisarg); | |
| 2358 else if (ident == Id.keys) | |
| 2359 return interpret_keys(istate, thisarg, this); | |
| 2360 else if (ident == Id.values) | |
| 2361 return interpret_values(istate, thisarg, this); | |
| 2362 } | |
| 2363 } | |
| 2364 | |
| 63 | 2365 if (cantInterpret || semanticRun == 3) |
| 2366 return null; | |
| 2367 | |
| 2368 if (!fbody) | |
| 2369 { | |
| 2370 cantInterpret = 1; | |
| 2371 return null; | |
| 2372 } | |
| 2373 | |
| 2374 if (semanticRun < 3 && scope_) | |
| 2375 { | |
| 2376 semantic3(scope_); | |
| 2377 if (global.errors) // if errors compiling this function | |
| 2378 return null; | |
| 2379 } | |
| 2380 if (semanticRun < 4) | |
| 2381 return null; | |
| 2382 | |
| 2383 Type tb = type.toBasetype(); | |
| 2384 assert(tb.ty == Tfunction); | |
| 2385 TypeFunction tf = cast(TypeFunction)tb; | |
| 2386 Type tret = tf.next.toBasetype(); | |
| 2387 if (tf.varargs) | |
| 2388 { | |
| 2389 cantInterpret = 1; | |
| 2390 error("Variadic functions are not yet implemented in CTFE"); | |
| 2391 return null; | |
| 2392 } | |
| 2393 | |
| 2394 // Ensure there are no lazy parameters | |
| 2395 if (tf.parameters) | |
| 2396 { | |
| 2397 size_t dim = Argument.dim(tf.parameters); | |
| 2398 for (size_t i = 0; i < dim; i++) | |
| 2399 { | |
| 2400 Argument arg = Argument.getNth(tf.parameters, i); | |
| 2401 if (arg.storageClass & STClazy) | |
| 2402 { | |
| 2403 cantInterpret = 1; | |
| 2404 return null; | |
| 2405 } | |
| 2406 } | |
| 2407 } | |
| 2408 | |
| 2409 scope InterState istatex = new InterState(); | |
| 2410 istatex.caller = istate; | |
| 2411 istatex.fd = this; | |
| 2412 istatex.localThis = thisarg; | |
| 2413 | |
| 2414 scope Expressions vsave = new Expressions(); // place to save previous parameter values | |
| 2415 size_t dim = 0; | |
| 2416 if (needThis() && !thisarg) | |
| 2417 { | |
| 2418 cantInterpret = 1; | |
| 2419 // error, no this. Prevent segfault. | |
| 2420 error("need 'this' to access member %s", toChars()); | |
| 2421 return null; | |
| 2422 } | |
| 2423 if (arguments) | |
| 2424 { | |
| 2425 dim = arguments.dim; | |
| 2426 assert(!dim || (parameters && (parameters.dim == dim))); | |
| 2427 vsave.setDim(dim); | |
| 2428 | |
| 2429 /* Evaluate all the arguments to the function, | |
| 2430 * store the results in eargs[] | |
| 2431 */ | |
| 2432 scope Expressions eargs = new Expressions(); | |
| 2433 eargs.setDim(dim); | |
| 2434 | |
| 2435 for (size_t i = 0; i < dim; i++) | |
| 2436 { | |
|
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|
2437 Expression earg = arguments[i]; |
| 63 | 2438 Argument arg = Argument.getNth(tf.parameters, i); |
| 2439 | |
| 2440 if (arg.storageClass & (STCout | STCref)) | |
| 2441 { | |
| 2442 } | |
| 2443 else | |
| 2444 { /* Value parameters | |
| 2445 */ | |
| 2446 Type ta = arg.type.toBasetype(); | |
| 2447 if (ta.ty == Tsarray && earg.op == TOKaddress) | |
| 2448 { | |
| 2449 /* Static arrays are passed by a simple pointer. | |
| 2450 * Skip past this to get at the actual arg. | |
| 2451 */ | |
| 2452 earg = (cast(AddrExp)earg).e1; | |
| 2453 } | |
| 2454 earg = earg.interpret(istate ? istate : istatex); | |
| 2455 if (earg is EXP_CANT_INTERPRET) | |
| 2456 { | |
| 2457 cantInterpret = 1; | |
| 2458 return null; | |
| 2459 } | |
| 2460 } | |
|
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|
2461 eargs[i] = earg; |
| 63 | 2462 } |
| 2463 | |
| 2464 for (size_t i = 0; i < dim; i++) | |
| 2465 { | |
|
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|
2466 auto earg = eargs[i]; |
| 63 | 2467 Argument arg = Argument.getNth(tf.parameters, i); |
|
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2468 auto v = cast(VarDeclaration)parameters[i]; |
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2469 vsave[i] = v.value; |
| 63 | 2470 version (LOG) { |
| 2471 printf("arg[%d] = %s\n", i, earg.toChars()); | |
| 2472 } | |
| 2473 if (arg.storageClass & (STCout | STCref) && earg.op==TOKvar) | |
| 2474 { | |
| 2475 /* Bind out or ref parameter to the corresponding | |
| 2476 * variable v2 | |
| 2477 */ | |
| 2478 if (!istate) | |
| 2479 { | |
| 2480 cantInterpret = 1; | |
| 2481 error("%s cannot be by passed by reference at compile time", earg.toChars()); | |
| 2482 return null; // can't bind to non-interpreted vars | |
| 2483 } | |
| 2484 // We need to chase down all of the the passed parameters until | |
| 2485 // we find something that isn't a TOKvar, then create a variable | |
| 2486 // containg that expression. | |
| 2487 VarDeclaration v2; | |
| 2488 while (1) | |
| 2489 { | |
| 2490 VarExp ve = cast(VarExp)earg; | |
| 2491 v2 = ve.var.isVarDeclaration(); | |
| 2492 if (!v2) | |
| 2493 { | |
| 2494 cantInterpret = 1; | |
| 2495 return null; | |
| 2496 } | |
| 2497 if (!v2.value || v2.value.op != TOKvar) | |
| 2498 break; | |
| 2499 if ((cast(VarExp)v2.value).var.isSymbolDeclaration()) | |
| 2500 { | |
| 2501 // This can happen if v is a struct initialized to | |
| 2502 // 0 using an __initZ SymbolDeclaration from | |
| 2503 // TypeStruct.defaultInit() | |
| 2504 break; // eg default-initialized variable | |
| 2505 } | |
| 2506 earg = v2.value; | |
| 2507 } | |
| 2508 | |
| 2509 v.value = new VarExp(earg.loc, v2); | |
| 2510 | |
| 2511 /* Don't restore the value of v2 upon function return | |
| 2512 */ | |
| 2513 assert(istate); | |
|
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2514 foreach(size_t j, Dsymbol s2; istate.vars)// (size_t j = 0; j < istate.vars.dim; j++) |
| 63 | 2515 { |
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2516 auto vd = cast(VarDeclaration)s2; |
| 63 | 2517 if (vd == v2) |
| 2518 { | |
|
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2519 istate.vars[j] = null; |
| 63 | 2520 break; |
| 2521 } | |
| 2522 } | |
| 2523 } | |
| 2524 else | |
| 2525 { | |
| 2526 // Value parameters and non-trivial references | |
| 2527 v.value = earg; | |
| 2528 } | |
| 2529 version (LOG) { | |
| 2530 printf("interpreted arg[%d] = %s\n", i, earg.toChars()); | |
| 2531 } | |
| 2532 } | |
| 2533 } | |
| 2534 // Don't restore the value of 'this' upon function return | |
| 2535 if (needThis() && thisarg.op==TOKvar) { | |
| 2536 VarDeclaration thisvar = (cast(VarExp)thisarg).var.isVarDeclaration(); | |
|
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2537 foreach (size_t i, Dsymbol s; istate.vars) |
| 63 | 2538 { |
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2539 auto v = cast(VarDeclaration)s; |
| 63 | 2540 if (v == thisvar) |
| 2541 { | |
|
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2542 istate.vars[i] = null; |
| 63 | 2543 break; |
| 2544 } | |
| 2545 } | |
| 2546 } | |
| 2547 | |
| 2548 /* Save the values of the local variables used | |
| 2549 */ | |
| 2550 scope Expressions valueSaves = new Expressions(); | |
| 2551 if (istate && !isNested()) | |
| 2552 { | |
| 2553 //printf("saving local variables...\n"); | |
| 2554 valueSaves.setDim(istate.vars.dim); | |
|
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2555 foreach (size_t i, Dsymbol s3; istate.vars) |
| 63 | 2556 { |
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2557 if (auto v = cast(VarDeclaration)s3) |
| 63 | 2558 { |
| 2559 //printf("\tsaving [%d] %s = %s\n", i, v.toChars(), v.value ? v.value.toChars() : ""); | |
|
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|
2560 valueSaves[i] = v.value; |
| 63 | 2561 v.value = null; |
| 2562 } | |
| 2563 } | |
| 2564 } | |
| 2565 | |
| 2566 Expression e = null; | |
| 2567 while (1) | |
| 2568 { | |
| 2569 e = fbody.interpret(istatex); | |
| 2570 if (e is EXP_CANT_INTERPRET) | |
| 2571 { | |
| 2572 version (LOG) { | |
| 2573 printf("function body failed to interpret\n"); | |
| 2574 } | |
| 2575 e = null; | |
| 2576 } | |
| 2577 | |
| 2578 /* This is how we deal with a recursive statement AST | |
| 2579 * that has arbitrary goto statements in it. | |
| 2580 * Bubble up a 'result' which is the target of the goto | |
| 2581 * statement, then go recursively down the AST looking | |
| 2582 * for that statement, then execute starting there. | |
| 2583 */ | |
| 2584 if (e is EXP_GOTO_INTERPRET) | |
| 2585 { | |
| 2586 istatex.start = istatex.gotoTarget; // set starting statement | |
| 2587 istatex.gotoTarget = null; | |
| 2588 } | |
| 2589 else | |
| 2590 break; | |
| 2591 } | |
| 2592 /* Restore the parameter values | |
| 2593 */ | |
| 2594 for (size_t i = 0; i < dim; i++) | |
| 2595 { | |
|
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2596 auto v = cast(VarDeclaration)parameters[i]; |
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|
2597 v.value = vsave[i]; |
| 63 | 2598 } |
| 2599 | |
| 2600 if (istate && !isNested()) | |
| 2601 { | |
| 2602 /* Restore the variable values | |
| 2603 */ | |
| 2604 //printf("restoring local variables...\n"); | |
|
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2605 foreach (size_t i , Dsymbol s3; istate.vars) |
| 63 | 2606 { |
|
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|
2607 if (auto v = cast(VarDeclaration)s3) |
| 63 | 2608 { |
|
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|
2609 v.value = valueSaves[i]; |
| 63 | 2610 //printf("\trestoring [%d] %s = %s\n", i, v.toChars(), v.value ? v.value.toChars() : ""); |
| 2611 } | |
| 2612 } | |
| 2613 } | |
| 2614 return e; | |
| 0 | 2615 } |
| 2616 | |
| 72 | 2617 override void inlineScan() |
| 0 | 2618 { |
| 2619 InlineScanState iss; | |
| 2620 | |
| 2621 version (LOG) { | |
| 2622 printf("FuncDeclaration.inlineScan('%s')\n", toChars()); | |
| 2623 } | |
| 2624 ///memset(&iss, 0, sizeof(iss)); | |
| 2625 iss.fd = this; | |
| 2626 if (fbody) | |
| 2627 { | |
| 2628 inlineNest++; | |
| 2629 fbody = fbody.inlineScan(&iss); | |
| 2630 inlineNest--; | |
| 2631 } | |
| 2632 } | |
| 2633 | |
| 2634 int canInline(int hasthis, int hdrscan = 0) | |
| 2635 { | |
| 2636 int cost; | |
| 2637 | |
| 2638 // #define CANINLINE_LOG 0 | |
| 2639 | |
| 2640 version (CANINLINE_LOG) { | |
| 2641 printf("FuncDeclaration.canInline(hasthis = %d, '%s')\n", hasthis, toChars()); | |
| 2642 } | |
| 2643 | |
| 2644 if (needThis() && !hasthis) | |
| 2645 return 0; | |
| 2646 | |
| 2647 if (inlineNest || (semanticRun < 3 && !hdrscan)) | |
| 2648 { | |
| 2649 version (CANINLINE_LOG) { | |
| 2650 printf("\t1: no, inlineNest = %d, semanticRun = %d\n", inlineNest, semanticRun); | |
| 2651 } | |
| 2652 return 0; | |
| 2653 } | |
| 2654 | |
| 2655 switch (inlineStatus) | |
| 2656 { | |
| 2657 case ILS.ILSyes: | |
| 2658 version (CANINLINE_LOG) { | |
| 2659 printf("\t1: yes %s\n", toChars()); | |
| 2660 } | |
| 2661 return 1; | |
| 2662 | |
| 2663 case ILS.ILSno: | |
| 2664 version (CANINLINE_LOG) { | |
| 2665 printf("\t1: no %s\n", toChars()); | |
| 2666 } | |
| 2667 return 0; | |
| 2668 | |
| 2669 case ILS.ILSuninitialized: | |
| 2670 break; | |
| 2671 | |
| 2672 default: | |
| 2673 assert(0); | |
| 2674 } | |
| 2675 | |
| 2676 if (type) | |
| 2677 { | |
| 2678 assert(type.ty == Tfunction); | |
| 2679 TypeFunction tf = cast(TypeFunction)type; | |
| 2680 if (tf.varargs == 1) // no variadic parameter lists | |
| 2681 goto Lno; | |
| 2682 | |
| 2683 /* Don't inline a function that returns non-void, but has | |
| 2684 * no return expression. | |
| 2685 */ | |
| 2686 if (tf.next && tf.next.ty != Tvoid && | |
| 2687 !(hasReturnExp & 1) && | |
| 2688 !hdrscan) | |
| 2689 goto Lno; | |
| 2690 } | |
| 2691 else | |
| 2692 { | |
| 2693 CtorDeclaration ctor = isCtorDeclaration(); | |
| 2694 if (ctor && ctor.varargs == 1) | |
| 2695 goto Lno; | |
| 2696 } | |
| 2697 | |
| 2698 if ( | |
| 2699 !fbody || | |
| 2700 !hdrscan && | |
| 2701 ( | |
| 2702 /// static if (false) { | |
| 2703 /// isCtorDeclaration() || // cannot because need to convert: | |
| 2704 /// // return; | |
| 2705 /// // to: | |
| 2706 /// // return this; | |
| 2707 /// } | |
| 2708 isSynchronized() || | |
| 2709 isImportedSymbol() || | |
| 2710 /// version (DMDV2) { | |
| 2711 closureVars.dim || // no nested references to this frame | |
| 2712 /// } else { | |
| 2713 /// nestedFrameRef || // no nested references to this frame | |
| 2714 /// } | |
| 2715 (isVirtual() && !isFinal()) | |
| 2716 )) | |
| 2717 { | |
| 2718 goto Lno; | |
| 2719 } | |
| 2720 | |
| 2721 /* If any parameters are Tsarray's (which are passed by reference) | |
| 2722 * or out parameters (also passed by reference), don't do inlining. | |
| 2723 */ | |
| 2724 if (parameters) | |
| 2725 { | |
|
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|
2726 foreach (Dsymbol s3; parameters) |
| 0 | 2727 { |
|
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|
2728 auto v = cast(VarDeclaration)s3; |
| 0 | 2729 if (v.isOut() || v.isRef() || v.type.toBasetype().ty == Tsarray) |
| 2730 goto Lno; | |
| 2731 } | |
| 2732 } | |
| 2733 | |
| 2734 InlineCostState ics; | |
| 2735 ///memset(&ics, 0, sizeof(ics)); | |
| 2736 ics.hasthis = hasthis; | |
| 2737 ics.fd = this; | |
| 2738 ics.hdrscan = hdrscan; | |
| 2739 cost = fbody.inlineCost(&ics); | |
| 2740 version (CANINLINE_LOG) { | |
| 2741 printf("cost = %d\n", cost); | |
| 2742 } | |
| 2743 if (cost >= COST_MAX) | |
| 2744 goto Lno; | |
| 2745 | |
| 2746 if (!hdrscan) // Don't scan recursively for header content scan | |
| 2747 inlineScan(); | |
| 2748 | |
| 2749 Lyes: | |
| 2750 if (!hdrscan) // Don't modify inlineStatus for header content scan | |
| 2751 inlineStatus = ILS.ILSyes; | |
| 2752 version (CANINLINE_LOG) { | |
| 2753 printf("\t2: yes %s\n", toChars()); | |
| 2754 } | |
| 2755 return 1; | |
| 2756 | |
| 2757 Lno: | |
| 2758 if (!hdrscan) // Don't modify inlineStatus for header content scan | |
| 2759 inlineStatus = ILS.ILSno; | |
| 2760 version (CANINLINE_LOG) { | |
| 2761 printf("\t2: no %s\n", toChars()); | |
| 2762 } | |
| 2763 return 0; | |
| 2764 } | |
| 2765 | |
|
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|
2766 Expression doInline(InlineScanState* iss, Expression ethis, Expressions arguments) |
| 0 | 2767 { |
| 2768 InlineDoState ids = new InlineDoState(); | |
| 2769 DeclarationExp de; | |
| 2770 Expression e = null; | |
| 2771 | |
| 2772 version (LOG) { | |
| 2773 printf("FuncDeclaration.doInline('%s')\n", toChars()); | |
| 2774 } | |
| 2775 | |
| 2776 ///memset(&ids, 0, sizeof(ids)); | |
| 2777 ids.parent = iss.fd; | |
| 2778 | |
| 2779 // Set up vthis | |
| 2780 if (ethis) | |
| 2781 { | |
| 2782 VarDeclaration vthis; | |
| 2783 ExpInitializer ei; | |
| 2784 VarExp ve; | |
| 2785 | |
| 2786 version (STRUCTTHISREF) { | |
| 2787 if (ethis.type.ty == Tpointer) | |
| 2788 { | |
| 2789 Type t = ethis.type.nextOf(); | |
| 2790 ethis = new PtrExp(ethis.loc, ethis); | |
| 2791 ethis.type = t; | |
| 2792 } | |
| 2793 ei = new ExpInitializer(ethis.loc, ethis); | |
| 2794 | |
| 2795 vthis = new VarDeclaration(ethis.loc, ethis.type, Id.This, ei); | |
| 2796 if (ethis.type.ty != Tclass) | |
| 2797 vthis.storage_class = STCref; | |
| 2798 else | |
| 2799 vthis.storage_class = STCin; | |
| 2800 } else { | |
| 2801 if (ethis.type.ty != Tclass && ethis.type.ty != Tpointer) | |
| 2802 { | |
| 2803 ethis = ethis.addressOf(null); | |
| 2804 } | |
| 2805 | |
| 2806 ei = new ExpInitializer(ethis.loc, ethis); | |
| 2807 | |
| 2808 vthis = new VarDeclaration(ethis.loc, ethis.type, Id.This, ei); | |
| 2809 vthis.storage_class = STCin; | |
| 2810 } | |
| 2811 vthis.linkage = LINKd; | |
| 2812 vthis.parent = iss.fd; | |
| 2813 | |
| 2814 ve = new VarExp(vthis.loc, vthis); | |
| 2815 ve.type = vthis.type; | |
| 2816 | |
| 2817 ei.exp = new AssignExp(vthis.loc, ve, ethis); | |
| 2818 ei.exp.type = ve.type; | |
| 2819 version (STRUCTTHISREF) { | |
| 2820 if (ethis.type.ty != Tclass) | |
| 2821 { | |
| 2822 /* This is a reference initialization, not a simple assignment. | |
| 2823 */ | |
| 2824 ei.exp.op = TOKconstruct; | |
| 2825 } | |
| 2826 } | |
| 2827 | |
| 2828 ids.vthis = vthis; | |
| 2829 } | |
| 2830 | |
| 2831 // Set up parameters | |
| 2832 if (ethis) | |
| 2833 { | |
| 2834 e = new DeclarationExp(Loc(0), ids.vthis); | |
| 2835 e.type = Type.tvoid; | |
| 2836 } | |
| 2837 | |
| 2838 if (arguments && arguments.dim) | |
| 2839 { | |
| 2840 assert(parameters.dim == arguments.dim); | |
| 2841 | |
| 2842 for (int i = 0; i < arguments.dim; i++) | |
| 2843 { | |
|
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|
2844 auto vfrom = cast(VarDeclaration)parameters[i]; |
| 0 | 2845 VarDeclaration vto; |
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|
2846 Expression arg = arguments[i]; |
| 0 | 2847 ExpInitializer ei; |
| 2848 VarExp ve; | |
| 2849 | |
| 2850 ei = new ExpInitializer(arg.loc, arg); | |
| 2851 | |
| 2852 vto = new VarDeclaration(vfrom.loc, vfrom.type, vfrom.ident, ei); | |
| 2853 vto.storage_class |= vfrom.storage_class & (STCin | STCout | STClazy | STCref); | |
| 2854 vto.linkage = vfrom.linkage; | |
| 2855 vto.parent = iss.fd; | |
| 2856 //printf("vto = '%s', vto.storage_class = x%x\n", vto.toChars(), vto.storage_class); | |
| 2857 //printf("vto.parent = '%s'\n", iss.fd.toChars()); | |
| 2858 | |
| 2859 ve = new VarExp(vto.loc, vto); | |
| 2860 //ve.type = vto.type; | |
| 2861 ve.type = arg.type; | |
| 2862 | |
| 2863 ei.exp = new AssignExp(vto.loc, ve, arg); | |
| 2864 ei.exp.type = ve.type; | |
| 2865 //ve.type.print(); | |
| 2866 //arg.type.print(); | |
| 2867 //ei.exp.print(); | |
| 2868 | |
| 2869 ids.from.push(cast(void*)vfrom); | |
| 2870 ids.to.push(cast(void*)vto); | |
| 2871 | |
| 2872 de = new DeclarationExp(Loc(0), vto); | |
| 2873 de.type = Type.tvoid; | |
| 2874 | |
| 2875 e = Expression.combine(e, de); | |
| 2876 } | |
| 2877 } | |
| 2878 | |
| 2879 inlineNest++; | |
| 2880 Expression eb = fbody.doInline(ids); | |
| 2881 inlineNest--; | |
| 2882 //eb.type.print(); | |
| 2883 //eb.print(); | |
| 2884 //eb.dump(0); | |
| 2885 return Expression.combine(e, eb); | |
| 2886 } | |
| 2887 | |
| 72 | 2888 override string kind() |
| 0 | 2889 { |
| 2890 return "function"; | |
| 2891 } | |
| 2892 | |
| 72 | 2893 override void toDocBuffer(OutBuffer buf) |
| 0 | 2894 { |
| 2895 assert(false); | |
| 2896 } | |
| 2897 | |
| 2898 FuncDeclaration isUnique() | |
| 2899 { | |
| 2900 assert(false); | |
| 2901 } | |
| 2902 | |
| 2903 /******************************* | |
| 2904 * Look at all the variables in this function that are referenced | |
| 2905 * by nested functions, and determine if a closure needs to be | |
| 2906 * created for them. | |
| 2907 */ | |
| 2908 bool needsClosure() | |
| 2909 { | |
| 2910 /* Need a closure for all the closureVars[] if any of the | |
| 2911 * closureVars[] are accessed by a | |
| 2912 * function that escapes the scope of this function. | |
| 2913 * We take the conservative approach and decide that any function that: | |
| 2914 * 1) is a virtual function | |
| 2915 * 2) has its address taken | |
| 2916 * 3) has a parent that escapes | |
| 2917 * | |
| 2918 * Note that since a non-virtual function can be called by | |
| 2919 * a virtual one, if that non-virtual function accesses a closure | |
| 2920 * var, the closure still has to be taken. Hence, we check for isThis() | |
| 2921 * instead of isVirtual(). (thanks to David Friedman) | |
| 2922 */ | |
| 2923 | |
| 2924 //printf("FuncDeclaration.needsClosure() %s\n", toChars()); | |
|
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2925 foreach (Dsymbol s3; closureVars) |
| 0 | 2926 { |
|
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|
2927 auto v = cast(VarDeclaration)s3; |
| 0 | 2928 assert(v.isVarDeclaration()); |
| 2929 //printf("\tv = %s\n", v.toChars()); | |
| 2930 | |
|
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2931 foreach(FuncDeclaration f; v.nestedrefs) |
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diff
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|
2932 { |
| 0 | 2933 assert(f != this); |
| 2934 | |
| 2935 //printf("\t\tf = %s, %d, %p, %d\n", f.toChars(), f.isVirtual(), f.isThis(), f.tookAddressOf); | |
| 2936 if (f.isThis() || f.tookAddressOf) | |
| 2937 goto Lyes; // assume f escapes this function's scope | |
| 2938 | |
| 2939 // Look to see if any parents of f that are below this escape | |
| 2940 for (Dsymbol s = f.parent; s && s !is this; s = s.parent) | |
| 2941 { | |
| 2942 f = s.isFuncDeclaration(); | |
| 2943 if (f && (f.isThis() || f.tookAddressOf)) { | |
| 2944 goto Lyes; | |
| 2945 } | |
| 2946 } | |
| 2947 } | |
| 2948 } | |
| 2949 return false; | |
| 2950 | |
| 2951 Lyes: | |
| 2952 //printf("\tneeds closure\n"); | |
| 2953 return true; | |
| 2954 } | |
| 2955 | |
| 73 | 2956 /**************************************************** |
| 2957 * Merge into this function the 'in' contracts of all it overrides. | |
| 2958 * 'in's are OR'd together, i.e. only one of them needs to pass. | |
| 2959 */ | |
| 2960 | |
| 2961 Statement mergeFrequire(Statement sf) | |
| 2962 { | |
| 2963 /* Implementing this is done by having the overriding function call | |
| 2964 * nested functions (the fdrequire functions) nested inside the overridden | |
| 2965 * function. This requires that the stack layout of the calling function's | |
| 2966 * parameters and 'this' pointer be in the same place (as the nested | |
| 2967 * function refers to them). | |
| 2968 * This is easy for the parameters, as they are all on the stack in the same | |
| 2969 * place by definition, since it's an overriding function. The problem is | |
| 2970 * getting the 'this' pointer in the same place, since it is a local variable. | |
| 2971 * We did some hacks in the code generator to make this happen: | |
| 2972 * 1. always generate exception handler frame, or at least leave space for it | |
| 2973 * in the frame (Windows 32 SEH only) | |
| 2974 * 2. always generate an EBP style frame | |
| 2975 * 3. since 'this' is passed in a register that is subsequently copied into | |
| 2976 * a stack local, allocate that local immediately following the exception | |
| 2977 * handler block, so it is always at the same offset from EBP. | |
| 2978 */ | |
|
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|
2979 foreach(FuncDeclaration fdv; foverrides) //(int i = 0; i < foverrides.dim; i++) |
| 73 | 2980 { |
| 2981 sf = fdv.mergeFrequire(sf); | |
| 98 | 2982 if (fdv.fdrequire) |
| 73 | 2983 { |
| 2984 //printf("fdv.frequire: %s\n", fdv.frequire.toChars()); | |
| 2985 /* Make the call: | |
| 2986 * try { __require(); } | |
| 2987 * catch { frequire; } | |
| 2988 */ | |
| 2989 Expression eresult = null; | |
| 2990 Expression e = new CallExp(loc, new VarExp(loc, fdv.fdrequire, 0), eresult); | |
| 2991 Statement s2 = new ExpStatement(loc, e); | |
| 2992 | |
| 2993 if (sf) | |
| 2994 { | |
| 2995 Catch c = new Catch(loc, null, null, sf); | |
| 2996 Array catches = new Array(); | |
| 2997 catches.push(cast(void*)c); | |
| 2998 sf = new TryCatchStatement(loc, s2, catches); | |
| 2999 } | |
| 3000 else | |
| 3001 sf = s2; | |
| 3002 } | |
| 3003 } | |
| 3004 return sf; | |
| 3005 } | |
| 3006 | |
| 3007 /**************************************************** | |
| 3008 * Merge into this function the 'out' contracts of all it overrides. | |
| 3009 * 'out's are AND'd together, i.e. all of them need to pass. | |
| 3010 */ | |
| 3011 | |
| 3012 Statement mergeFensure(Statement sf) | |
| 3013 { | |
| 3014 /* Same comments as for mergeFrequire(), except that we take care | |
| 3015 * of generating a consistent reference to the 'result' local by | |
| 3016 * explicitly passing 'result' to the nested function as a reference | |
| 3017 * argument. | |
| 3018 * This won't work for the 'this' parameter as it would require changing | |
| 3019 * the semantic code for the nested function so that it looks on the parameter | |
| 3020 * list for the 'this' pointer, something that would need an unknown amount | |
| 3021 * of tweaking of various parts of the compiler that I'd rather leave alone. | |
| 3022 */ | |
|
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|
3023 foreach (FuncDeclaration fdv; foverrides) |
| 73 | 3024 { |
| 3025 sf = fdv.mergeFensure(sf); | |
| 98 | 3026 if (fdv.fdensure) |
| 73 | 3027 { |
| 3028 //printf("fdv.fensure: %s\n", fdv.fensure.toChars()); | |
| 3029 // Make the call: __ensure(result) | |
| 3030 Expression eresult = null; | |
| 3031 if (outId) | |
| 3032 eresult = new IdentifierExp(loc, outId); | |
| 3033 Expression e = new CallExp(loc, new VarExp(loc, fdv.fdensure, 0), eresult); | |
| 3034 Statement s2 = new ExpStatement(loc, e); | |
| 3035 | |
| 3036 if (sf) | |
| 3037 { | |
| 3038 sf = new CompoundStatement(fensure.loc, s2, sf); | |
| 3039 } | |
| 3040 else | |
| 3041 sf = s2; | |
| 3042 } | |
| 3043 } | |
| 3044 return sf; | |
| 3045 } | |
| 3046 | |
| 0 | 3047 static FuncDeclaration genCfunc(Type treturn, string name) |
| 3048 { | |
| 3049 return genCfunc(treturn, Lexer.idPool(name)); | |
| 3050 } | |
| 3051 | |
| 3052 /********************************** | |
| 3053 * Generate a FuncDeclaration for a runtime library function. | |
| 3054 */ | |
| 3055 static FuncDeclaration genCfunc(Type treturn, Identifier id) | |
| 3056 { | |
| 3057 FuncDeclaration fd; | |
| 3058 TypeFunction tf; | |
| 3059 Dsymbol s; | |
| 3060 static DsymbolTable st = null; | |
| 3061 | |
| 3062 //printf("genCfunc(name = '%s')\n", id.toChars()); | |
| 3063 //printf("treturn\n\t"); treturn.print(); | |
| 3064 | |
| 3065 // See if already in table | |
| 3066 if (!st) | |
| 3067 st = new DsymbolTable(); | |
| 3068 | |
| 3069 s = st.lookup(id); | |
| 3070 if (s) | |
| 3071 { | |
| 3072 fd = s.isFuncDeclaration(); | |
| 3073 assert(fd); | |
| 3074 assert(fd.type.nextOf().equals(treturn)); | |
| 3075 } | |
| 3076 else | |
| 3077 { | |
| 3078 tf = new TypeFunction(null, treturn, 0, LINK.LINKc); | |
| 3079 fd = new FuncDeclaration(Loc(0), Loc(0), id, STCstatic, tf); | |
| 3080 fd.protection = PROT.PROTpublic; | |
| 3081 fd.linkage = LINK.LINKc; | |
| 3082 | |
| 3083 st.insert(fd); | |
| 3084 } | |
| 3085 return fd; | |
| 3086 } | |
| 3087 | |
| 72 | 3088 override Symbol* toSymbol() |
| 0 | 3089 { |
| 3090 if (!csym) | |
| 3091 { | |
| 3092 Symbol* s; | |
| 3093 TYPE* t; | |
| 3094 string id; | |
| 3095 | |
| 3096 static if (false) { | |
| 3097 id = ident.toChars(); | |
| 3098 } else { | |
| 3099 id = mangle(); | |
| 3100 } | |
| 3101 //writef("FuncDeclaration.toSymbol(%s %s)\n", kind(), toChars()); | |
| 3102 //writef("\tid = '%s'\n", id); | |
| 3103 //writef("\ttype = %s\n", type.toChars()); | |
| 3104 s = symbol_calloc(toStringz(id)); | |
| 3105 slist_add(s); | |
| 3106 | |
| 3107 { | |
| 3108 s.prettyIdent = toStringz(toPrettyChars()); | |
| 3109 s.Sclass = SC.SCglobal; | |
| 3110 symbol_func(s); | |
| 3111 func_t* f = s.Sfunc; | |
| 3112 if (isVirtual()) | |
| 3113 f.Fflags |= F.Fvirtual; | |
| 3114 else if (isMember2()) | |
| 3115 f.Fflags |= F.Fstatic; | |
| 3116 f.Fstartline.Slinnum = loc.linnum; | |
| 3117 f.Fstartline.Sfilename = cast(char*)toStringz(loc.filename); | |
| 3118 if (endloc.linnum) | |
| 3119 { | |
| 3120 f.Fendline.Slinnum = endloc.linnum; | |
| 3121 f.Fendline.Sfilename = cast(char*)toStringz(endloc.filename); | |
| 3122 } | |
| 3123 else | |
| 3124 { | |
| 3125 f.Fendline.Slinnum = loc.linnum; | |
| 3126 f.Fendline.Sfilename = cast(char*)toStringz(loc.filename); | |
| 3127 } | |
| 3128 t = type.toCtype(); | |
| 3129 } | |
| 3130 | |
| 3131 mangle_t msave = t.Tmangle; | |
| 3132 if (isMain()) | |
| 3133 { | |
| 3134 t.Tty = TYM.TYnfunc; | |
| 3135 t.Tmangle = mTYman.mTYman_c; | |
| 3136 } | |
| 3137 else | |
| 3138 { | |
| 3139 switch (linkage) | |
| 3140 { | |
| 3141 case LINK.LINKwindows: | |
| 3142 t.Tmangle = mTYman.mTYman_std; | |
| 3143 break; | |
| 3144 | |
| 3145 case LINK.LINKpascal: | |
| 3146 t.Tty = TYM.TYnpfunc; | |
| 3147 t.Tmangle = mTYman.mTYman_pas; | |
| 3148 break; | |
| 3149 | |
| 3150 case LINK.LINKc: | |
| 3151 t.Tmangle = mTYman.mTYman_c; | |
| 3152 break; | |
| 3153 | |
| 3154 case LINK.LINKd: | |
| 3155 t.Tmangle = mTYman.mTYman_d; | |
| 3156 break; | |
| 3157 | |
| 3158 case LINK.LINKcpp: | |
| 3159 { t.Tmangle = mTYman.mTYman_cpp; | |
| 3160 version (TARGET_WINDOS) { | |
| 3161 if (isThis()) | |
| 3162 t.Tty = TYM.TYmfunc; | |
| 3163 } | |
| 3164 s.Sflags |= SFL.SFLpublic; | |
| 3165 Dsymbol parent = toParent(); | |
| 3166 ClassDeclaration cd = parent.isClassDeclaration(); | |
| 3167 if (cd) | |
| 3168 { | |
| 3169 .type* tt = cd.type.toCtype(); | |
| 3170 s.Sscope = tt.Tnext.Ttag; | |
| 3171 } | |
| 3172 break; | |
| 3173 } | |
| 3174 default: | |
| 3175 writef("linkage = %d\n", linkage); | |
| 3176 assert(0); | |
| 3177 } | |
| 3178 } | |
| 3179 if (msave) | |
| 3180 assert(msave == t.Tmangle); | |
| 3181 //printf("Tty = %x, mangle = x%x\n", t.Tty, t.Tmangle); | |
| 3182 t.Tcount++; | |
| 3183 s.Stype = t; | |
| 3184 //s.Sfielddef = this; | |
| 3185 | |
| 3186 csym = s; | |
| 3187 } | |
| 3188 return csym; | |
| 3189 } | |
| 3190 | |
| 3191 Symbol* toThunkSymbol(int offset) // thunk version | |
| 3192 { | |
| 3193 Symbol *sthunk; | |
| 3194 | |
| 3195 toSymbol(); | |
| 3196 | |
| 3197 static if (false) { | |
| 3198 char *id; | |
| 3199 char *n; | |
| 3200 type *t; | |
| 3201 | |
| 3202 n = sym.Sident; | |
| 72 | 3203 version (Bug4054) { |
| 63 | 3204 id = cast(char*) GC.malloc(8 + 5 + strlen(n) + 1); |
| 72 | 3205 } else { |
| 63 | 3206 id = cast(char*) alloca(8 + 5 + strlen(n) + 1); |
| 3207 } | |
| 0 | 3208 sprintf(id, "_thunk%d__%s", offset, n); |
| 3209 s = symbol_calloc(id); | |
| 3210 slist_add(s); | |
| 3211 s.Stype = csym.Stype; | |
| 3212 s.Stype.Tcount++; | |
| 3213 } | |
| 3214 sthunk = symbol_generate(SCstatic, csym.Stype); | |
| 3215 sthunk.Sflags |= SFLimplem; | |
| 3216 cod3_thunk(sthunk, csym, 0, TYnptr, -offset, -1, 0); | |
| 3217 return sthunk; | |
| 3218 } | |
| 3219 | |
| 72 | 3220 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 3221 { |
| 3222 Symbol* s; | |
| 3223 func_t* f; | |
| 3224 Symbol* senter; | |
| 3225 Symbol* sexit; | |
| 3226 | |
| 3227 FuncDeclaration func = this; | |
| 3228 ClassDeclaration cd = func.parent.isClassDeclaration(); | |
| 3229 int reverse; | |
| 89 | 3230 |
| 0 | 3231 int has_arguments; |
| 3232 | |
| 3233 //printf("FuncDeclaration.toObjFile(%p, %s.%s)\n", func, parent.toChars(), func.toChars()); | |
| 98 | 3234 static if (false) |
| 3235 { | |
| 0 | 3236 //printf("line = %d\n",func.getWhere() / LINEINC); |
| 3237 EEcontext ee = env.getEEcontext(); | |
| 3238 if (ee.EEcompile == 2) | |
| 3239 { | |
| 3240 if (ee.EElinnum < (func.getWhere() / LINEINC) || | |
| 3241 ee.EElinnum > (func.endwhere / LINEINC) | |
| 3242 ) | |
| 3243 return; // don't compile this function | |
| 3244 ee.EEfunc = func.toSymbol(); | |
| 3245 } | |
| 3246 } | |
| 3247 | |
| 3248 if (multiobj && !isStaticDtorDeclaration() && !isStaticCtorDeclaration()) | |
| 3249 { | |
| 3250 obj_append(this); | |
| 3251 return; | |
| 3252 } | |
| 3253 | |
| 3254 if (semanticRun >= 5) // if toObjFile() already run | |
| 3255 return; | |
| 3256 | |
| 3257 semanticRun = 5; | |
| 3258 | |
| 3259 if (!func.fbody) | |
| 3260 { | |
| 3261 return; | |
| 3262 } | |
| 3263 | |
| 3264 if (func.isUnitTestDeclaration() && !global.params.useUnitTests) | |
| 3265 return; | |
| 3266 | |
| 3267 if (global.params.verbose) | |
| 3268 writef("function %s\n",func.toChars()); | |
| 3269 | |
| 3270 s = func.toSymbol(); | |
| 3271 f = s.Sfunc; | |
| 73 | 3272 |
| 98 | 3273 version (TARGET_WINDOS) |
| 3274 { | |
| 73 | 3275 /* This is done so that the 'this' pointer on the stack is the same |
| 3276 * distance away from the function parameters, so that an overriding | |
| 3277 * function can call the nested fdensure or fdrequire of its overridden function | |
| 3278 * and the stack offsets are the same. | |
| 3279 */ | |
| 3280 if (isVirtual() && (fensure || frequire)) | |
| 3281 f.Fflags3 |= F3.Ffakeeh; | |
| 3282 } | |
| 0 | 3283 |
| 3284 version (TARGET_OSX) { | |
| 3285 s.Sclass = SC.SCcomdat; | |
| 3286 } else { | |
| 3287 s.Sclass = SC.SCglobal; | |
| 3288 } | |
| 3289 | |
| 3290 for (Dsymbol p = parent; p; p = p.parent) | |
| 3291 { | |
| 3292 if (p.isTemplateInstance()) | |
| 3293 { | |
| 3294 s.Sclass = SC.SCcomdat; | |
| 3295 break; | |
| 3296 } | |
| 3297 } | |
| 3298 | |
| 3299 if (isNested()) | |
| 3300 { | |
| 3301 // if (!(config.flags3 & CFG3pic)) | |
| 3302 // s.Sclass = SCstatic; | |
| 3303 f.Fflags3 |= F3.Fnested; | |
| 3304 } | |
| 3305 else | |
| 3306 { | |
| 3307 const(char)* libname = (global.params.symdebug) ? global.params.debuglibname : global.params.defaultlibname; | |
| 3308 | |
| 3309 // Pull in RTL startup code | |
| 3310 if (func.isMain()) | |
| 3311 { objextdef("_main"); | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
17
diff
changeset
|
3312 version (POSIX) { ///TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS |
| 0 | 3313 obj_ehsections(); // initialize exception handling sections |
| 3314 } else { | |
| 3315 objextdef("__acrtused_con"); | |
| 3316 } | |
| 3317 obj_includelib(libname); | |
| 3318 s.Sclass = SC.SCglobal; | |
| 3319 } | |
| 3320 else if (strcmp(s.Sident.ptr, "main".ptr) == 0 && linkage == LINK.LINKc) | |
| 3321 s.Sclass = SC.SCglobal; | |
| 3322 | |
| 3323 else if (func.isWinMain()) | |
| 3324 { | |
| 3325 objextdef("__acrtused"); | |
| 3326 obj_includelib(libname); | |
| 3327 s.Sclass = SC.SCglobal; | |
| 3328 } | |
| 3329 | |
| 3330 // Pull in RTL startup code | |
| 3331 else if (func.isDllMain()) | |
| 3332 { | |
| 3333 objextdef("__acrtused_dll"); | |
| 3334 obj_includelib(libname); | |
| 3335 s.Sclass = SC.SCglobal; | |
| 3336 } | |
| 3337 } | |
| 3338 | |
| 3339 cstate.CSpsymtab = &f.Flocsym; | |
| 3340 | |
| 3341 // Find module m for this function | |
| 3342 Module m = null; | |
| 3343 for (Dsymbol p = parent; p; p = p.parent) | |
| 3344 { | |
| 3345 m = p.isModule(); | |
| 3346 if (m) | |
| 3347 break; | |
| 3348 } | |
| 3349 | |
| 3350 IRState irs = IRState(m, func); | |
| 3351 Array deferToObj = new Array(); // write these to OBJ file later | |
| 3352 irs.deferToObj = deferToObj; | |
| 3353 | |
| 3354 TypeFunction tf; | |
| 3355 RET retmethod; | |
| 3356 Symbol* shidden = null; | |
| 3357 Symbol* sthis = null; | |
| 3358 tym_t tyf; | |
| 3359 | |
| 3360 tyf = tybasic(s.Stype.Tty); | |
| 3361 //printf("linkage = %d, tyf = x%x\n", linkage, tyf); | |
| 3362 reverse = tyrevfunc(s.Stype.Tty); | |
| 3363 | |
| 3364 assert(func.type.ty == TY.Tfunction); | |
| 3365 tf = cast(TypeFunction)(func.type); | |
| 3366 has_arguments = (tf.linkage == LINK.LINKd) && (tf.varargs == 1); | |
| 3367 retmethod = tf.retStyle(); | |
| 3368 if (retmethod == RET.RETstack) | |
| 3369 { | |
| 3370 // If function returns a struct, put a pointer to that | |
| 3371 // as the first argument | |
| 3372 .type* thidden = tf.next.pointerTo().toCtype(); | |
| 3373 char hiddenparam[5+4+1]; | |
| 3374 static int hiddenparami; // how many we've generated so far | |
| 3375 | |
| 3376 sprintf(hiddenparam.ptr, "__HID%d".ptr, ++hiddenparami); | |
| 3377 shidden = symbol_name(hiddenparam.ptr, SC.SCparameter, thidden); | |
| 3378 shidden.Sflags |= SFL.SFLtrue | SFL.SFLfree; | |
| 3379 | |
| 3380 version (DMDV1) { | |
| 3381 bool nestedref = func.nrvo_can && func.nrvo_var && func.nrvo_var.nestedref; | |
| 3382 } else { | |
| 3383 bool nestedref = func.nrvo_can && func.nrvo_var && (func.nrvo_var.nestedrefs.dim != 0); | |
| 3384 } | |
| 3385 if (nestedref) { | |
| 3386 type_setcv(&shidden.Stype, shidden.Stype.Tty | mTY.mTYvolatile); | |
| 3387 } | |
| 3388 | |
| 3389 irs.shidden = shidden; | |
| 3390 this.shidden = shidden; | |
| 3391 } | |
| 3392 | |
| 3393 if (vthis) | |
| 3394 { | |
| 3395 assert(!vthis.csym); | |
| 3396 sthis = vthis.toSymbol(); | |
| 3397 irs.sthis = sthis; | |
| 3398 if (!(f.Fflags3 & F3.Fnested)) | |
| 3399 f.Fflags3 |= F3.Fmember; | |
| 3400 } | |
| 3401 | |
| 3402 Symbol** params; | |
| 3403 uint pi; | |
| 3404 | |
| 3405 // Estimate number of parameters, pi | |
| 3406 pi = (v_arguments !is null); | |
| 3407 if (parameters) | |
| 3408 pi += parameters.dim; | |
| 3409 | |
| 3410 // Allow extra 2 for sthis and shidden | |
| 72 | 3411 version (Bug4054) |
|
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
|
3412 params = cast(Symbol**)GC.malloc((pi + 2) * (Symbol*).sizeof); |
| 72 | 3413 else |
| 0 | 3414 params = cast(Symbol**)alloca((pi + 2) * (Symbol*).sizeof); |
| 3415 | |
| 3416 // Get the actual number of parameters, pi, and fill in the params[] | |
| 3417 pi = 0; | |
| 3418 if (v_arguments) | |
| 3419 { | |
| 3420 params[pi] = v_arguments.toSymbol(); | |
| 3421 pi += 1; | |
| 3422 } | |
| 3423 if (parameters) | |
| 3424 { | |
| 89 | 3425 size_t i = 0; |
| 3426 for ( ; i < parameters.dim; ++i) | |
| 0 | 3427 { |
| 89 | 3428 auto v = cast(VarDeclaration)parameters[i]; |
| 98 | 3429 |
| 0 | 3430 if (v.csym) |
| 98 | 3431 { |
| 3432 error("compiler error, parameter '%s', bugzilla 2962?", v.toChars()); | |
| 3433 assert(false); | |
| 3434 } | |
| 0 | 3435 params[pi + i] = v.toSymbol(); |
| 3436 } | |
| 3437 pi += i; | |
| 3438 } | |
| 3439 | |
| 3440 if (reverse) | |
| 3441 { | |
| 3442 // Reverse params[] entries | |
| 89 | 3443 for (size_t i = 0; i < pi/2; i++) |
| 0 | 3444 { |
| 3445 Symbol* sptmp = params[i]; | |
| 3446 params[i] = params[pi - 1 - i]; | |
| 3447 params[pi - 1 - i] = sptmp; | |
| 3448 } | |
| 3449 } | |
| 3450 | |
| 3451 if (shidden) | |
| 3452 { | |
| 3453 static if (false) { | |
| 3454 // shidden becomes last parameter | |
| 3455 params[pi] = shidden; | |
| 3456 } else { | |
| 3457 // shidden becomes first parameter | |
| 3458 memmove(params + 1, params, pi * (*params).sizeof); | |
| 3459 params[0] = shidden; | |
| 3460 } | |
| 3461 pi++; | |
| 3462 } | |
| 3463 | |
| 3464 | |
| 3465 if (sthis) | |
| 3466 { | |
| 3467 static if (false) { | |
| 3468 // sthis becomes last parameter | |
| 3469 params[pi] = sthis; | |
| 3470 } else { | |
| 3471 // sthis becomes first parameter | |
| 3472 memmove(params + 1, params, pi * (*params).sizeof); | |
| 3473 params[0] = sthis; | |
| 3474 } | |
| 3475 pi++; | |
| 3476 } | |
| 3477 | |
| 3478 if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) && | |
| 3479 linkage != LINK.LINKd && shidden && sthis) | |
| 3480 { | |
| 3481 /* swap shidden and sthis | |
| 3482 */ | |
| 3483 Symbol* sp = params[0]; | |
| 3484 params[0] = params[1]; | |
| 3485 params[1] = sp; | |
| 3486 } | |
| 3487 | |
| 89 | 3488 for (size_t i = 0; i < pi; i++) |
| 0 | 3489 { |
| 3490 Symbol *sp = params[i]; | |
| 3491 sp.Sclass = SC.SCparameter; | |
| 3492 sp.Sflags &= ~SFL.SFLspill; | |
| 3493 sp.Sfl = FL.FLpara; | |
| 3494 symbol_add(sp); | |
| 3495 } | |
| 3496 | |
| 3497 // First parameter goes in register | |
| 3498 if (pi) | |
| 3499 { | |
| 3500 Symbol* sp = params[0]; | |
| 3501 if ((tyf == TYM.TYjfunc || tyf == TYM.TYmfunc) && type_jparam(sp.Stype)) | |
| 3502 { | |
| 3503 sp.Sclass = SC.SCfastpar; | |
| 3504 sp.Spreg = (tyf == TYM.TYjfunc) ? REG.AX : REG.CX; | |
| 3505 sp.Sfl = FL.FLauto; | |
| 3506 //printf("'%s' is SCfastpar\n",sp.Sident); | |
| 3507 } | |
| 3508 } | |
| 3509 | |
| 3510 if (func.fbody) | |
| 3511 { | |
| 3512 block* b; | |
| 3513 Blockx bx; | |
| 3514 Statement sbody; | |
| 3515 | |
| 3516 localgot = null; | |
| 3517 | |
| 3518 sbody = func.fbody; | |
| 3519 ///memset(&bx, 0, (bx).sizeof); | |
| 3520 bx.startblock = block_calloc(); | |
| 3521 bx.curblock = bx.startblock; | |
| 3522 bx.funcsym = s; | |
| 3523 bx.scope_index = -1; | |
| 3524 bx.classdec = cd; | |
| 3525 bx.member = func; | |
| 3526 bx.module_ = getModule(); | |
| 3527 irs.blx = &bx; | |
| 3528 | |
| 3529 buildClosure(&irs); | |
| 3530 | |
| 3531 static if (false) { | |
| 3532 if (func.isSynchronized()) | |
| 3533 { | |
| 3534 if (cd) | |
| 3535 { | |
| 3536 elem *esync; | |
| 3537 if (func.isStatic()) | |
| 3538 { // monitor is in ClassInfo | |
| 3539 esync = el_ptr(cd.toSymbol()); | |
| 3540 } | |
| 3541 else | |
| 3542 { // 'this' is the monitor | |
| 3543 esync = el_var(sthis); | |
| 3544 } | |
| 3545 | |
| 3546 if (func.isStatic() || sbody.usesEH() || | |
| 3547 !(config.flags2 & CFG2.CFG2seh)) | |
| 3548 { // BUG: what if frequire or fensure uses EH? | |
| 3549 | |
| 3550 sbody = new SynchronizedStatement(func.loc, esync, sbody); | |
| 3551 } | |
| 3552 else | |
| 3553 { | |
| 3554 version (TARGET_WINDOS) { | |
| 3555 if (config.flags2 & CFG2.CFG2seh) | |
| 3556 { | |
| 3557 /* The "jmonitor" uses an optimized exception handling frame | |
| 3558 * which is a little shorter than the more general EH frame. | |
| 3559 * It isn't strictly necessary. | |
| 3560 */ | |
| 3561 s.Sfunc.Fflags3 |= Fjmonitor; | |
| 3562 } | |
| 3563 } | |
| 3564 el_free(esync); | |
| 3565 } | |
| 3566 } | |
| 3567 else | |
| 3568 { | |
| 3569 error("synchronized function %s must be a member of a class", func.toChars()); | |
| 3570 } | |
| 3571 } | |
| 3572 } else version (TARGET_WINDOS) { | |
| 3573 if (func.isSynchronized() && cd && config.flags2 & CFG2.CFG2seh && | |
| 3574 !func.isStatic() && !sbody.usesEH()) | |
| 3575 { | |
| 3576 /* The "jmonitor" hack uses an optimized exception handling frame | |
| 3577 * which is a little shorter than the more general EH frame. | |
| 3578 */ | |
| 3579 s.Sfunc.Fflags3 |= F3.Fjmonitor; | |
| 3580 } | |
| 3581 } | |
| 3582 | |
| 3583 sbody.toIR(&irs); | |
| 3584 bx.curblock.BC = BC.BCret; | |
| 3585 | |
| 3586 f.Fstartblock = bx.startblock; | |
| 3587 // einit = el_combine(einit,bx.init); | |
| 3588 | |
| 3589 if (isCtorDeclaration()) | |
| 3590 { | |
| 3591 assert(sthis); | |
| 3592 for (b = f.Fstartblock; b; b = b.Bnext) | |
| 3593 { | |
| 3594 if (b.BC == BC.BCret) | |
| 3595 { | |
| 3596 b.BC = BC.BCretexp; | |
| 3597 b.Belem = el_combine(b.Belem, el_var(sthis)); | |
| 3598 } | |
| 3599 } | |
| 3600 } | |
| 3601 } | |
| 3602 | |
| 3603 // If static constructor | |
| 3604 if (isStaticConstructor()) | |
| 3605 { | |
| 3606 elem* e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3607 ector = el_combine(ector, e); | |
| 3608 } | |
| 3609 | |
| 3610 // If static destructor | |
| 3611 if (isStaticDestructor()) | |
| 3612 { | |
| 3613 elem* e; | |
| 3614 | |
| 3615 version (STATICCTOR) { | |
| 3616 e = el_bin(OPER.OPcall, TYM.TYvoid, el_var(rtlsym[RTLSYM.RTLSYM_FATEXIT]), el_ptr(s)); | |
| 3617 ector = el_combine(ector, e); | |
| 3618 dtorcount++; | |
| 3619 } else { | |
| 3620 StaticDtorDeclaration f2 = isStaticDtorDeclaration(); | |
| 3621 assert(f2); | |
| 3622 if (f2.vgate) | |
| 3623 { | |
| 3624 /* Increment destructor's vgate at construction time | |
| 3625 */ | |
| 3626 ectorgates.push(cast(void*)f2); | |
| 3627 } | |
| 3628 | |
| 3629 e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3630 edtor = el_combine(e, edtor); | |
| 3631 } | |
| 3632 } | |
| 3633 | |
| 3634 // If unit test | |
| 3635 if (isUnitTestDeclaration()) | |
| 3636 { | |
| 3637 elem* e = el_una(OPER.OPucall, TYM.TYvoid, el_var(s)); | |
| 3638 etest = el_combine(etest, e); | |
| 3639 } | |
| 3640 | |
| 3641 if (global.errors) | |
| 3642 return; | |
| 3643 | |
| 3644 writefunc(s); | |
| 3645 | |
| 3646 if (isExport()) { | |
| 3647 obj_export(s, Poffset); | |
| 3648 } | |
| 3649 | |
| 89 | 3650 for (size_t i = 0; i < irs.deferToObj.dim; i++) |
| 0 | 3651 { |
| 3652 Dsymbol ss = cast(Dsymbol)irs.deferToObj.data[i]; | |
| 3653 ss.toObjFile(0); | |
| 3654 } | |
| 3655 | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
17
diff
changeset
|
3656 version (POSIX) { ///TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS |
| 0 | 3657 // A hack to get a pointer to this function put in the .dtors segment |
| 3658 if (ident && ident.toChars() == "_STD") { | |
| 3659 obj_staticdtor(s); | |
| 3660 } | |
| 3661 } | |
| 3662 version (DMDV2) { | |
| 3663 if (irs.startaddress) | |
| 3664 { | |
| 3665 writef("Setting start address\n"); | |
| 3666 obj_startaddress(irs.startaddress); | |
| 3667 } | |
| 3668 } | |
| 3669 } | |
| 3670 | |
| 72 | 3671 override int cvMember(ubyte* p) |
| 0 | 3672 { |
| 3673 assert(false); | |
| 3674 } | |
| 3675 | |
| 3676 /************************************* | |
| 3677 * Closures are implemented by taking the local variables that | |
| 3678 * need to survive the scope of the function, and copying them | |
| 3679 * into a gc allocated chuck of memory. That chunk, called the | |
| 3680 * closure here, is inserted into the linked list of stack | |
| 3681 * frames instead of the usual stack frame. | |
| 3682 * | |
| 3683 * buildClosure() inserts code just after the function prolog | |
| 3684 * is complete. It allocates memory for the closure, allocates | |
| 3685 * a local variable (sclosure) to point to it, inserts into it | |
| 3686 * the link to the enclosing frame, and copies into it the parameters | |
| 3687 * that are referred to in nested functions. | |
| 3688 * In VarExp.toElem and SymOffExp.toElem, when referring to a | |
| 3689 * variable that is in a closure, takes the offset from sclosure rather | |
| 3690 * than from the frame pointer. | |
| 3691 * | |
| 3692 * getEthis() and NewExp.toElem need to use sclosure, if set, rather | |
| 3693 * than the current frame pointer. | |
| 3694 */ | |
| 3695 void buildClosure(IRState* irs) | |
| 3696 { | |
| 3697 if (needsClosure()) | |
| 3698 { | |
| 3699 // Generate closure on the heap | |
| 3700 // BUG: doesn't capture variadic arguments passed to this function | |
| 3701 | |
| 3702 version (DMDV2) { | |
| 3703 /* BUG: doesn't handle destructors for the local variables. | |
| 3704 * The way to do it is to make the closure variables the fields | |
| 3705 * of a class object: | |
| 3706 * class Closure | |
| 3707 * { vtbl[] | |
| 3708 * monitor | |
| 3709 * ptr to destructor | |
| 3710 * sthis | |
| 3711 * ... closure variables ... | |
| 3712 * ~this() { call destructor } | |
| 3713 * } | |
| 3714 */ | |
| 3715 } | |
| 3716 //printf("FuncDeclaration.buildClosure()\n"); | |
| 3717 Symbol* sclosure; | |
| 3718 sclosure = symbol_name("__closptr".ptr, SC.SCauto, Type.tvoidptr.toCtype()); | |
| 3719 sclosure.Sflags |= SFL.SFLtrue | SFL.SFLfree; | |
| 3720 symbol_add(sclosure); | |
| 3721 irs.sclosure = sclosure; | |
| 3722 | |
| 3723 uint offset = PTRSIZE; // leave room for previous sthis | |
|
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3724 foreach (Dsymbol s3; closureVars) |
| 0 | 3725 { |
|
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3726 auto v = cast(VarDeclaration)s3; |
| 0 | 3727 assert(v.isVarDeclaration()); |
| 3728 | |
| 3729 version (DMDV2) { | |
| 3730 if (v.needsAutoDtor()) | |
| 3731 v.error("has scoped destruction, cannot build closure"); | |
| 3732 } | |
| 3733 /* Align and allocate space for v in the closure | |
| 3734 * just like AggregateDeclaration.addField() does. | |
| 3735 */ | |
| 3736 uint memsize; | |
| 3737 uint memalignsize; | |
| 3738 uint xalign; | |
| 3739 /// version (DMDV2) { | |
| 3740 if (v.storage_class & STC.STClazy) | |
| 3741 { | |
| 3742 /* Lazy variables are really delegates, | |
| 3743 * so give same answers that TypeDelegate would | |
| 3744 */ | |
| 3745 memsize = PTRSIZE * 2; | |
| 3746 memalignsize = memsize; | |
| 3747 xalign = global.structalign; | |
| 3748 } | |
| 3749 else | |
| 3750 /// } | |
| 3751 { | |
| 3752 memsize = cast(uint)v.type.size(); | |
| 3753 memalignsize = v.type.alignsize(); | |
| 3754 xalign = v.type.memalign(global.structalign); | |
| 3755 } | |
| 3756 AggregateDeclaration.alignmember(xalign, memalignsize, &offset); | |
| 3757 v.offset = offset; | |
| 3758 offset += memsize; | |
| 3759 | |
| 3760 /* Can't do nrvo if the variable is put in a closure, since | |
| 3761 * what the shidden points to may no longer exist. | |
| 3762 */ | |
| 3763 if (nrvo_can && nrvo_var == v) | |
| 3764 { | |
| 3765 nrvo_can = 0; | |
| 3766 } | |
| 3767 } | |
| 3768 // offset is now the size of the closure | |
| 3769 | |
| 3770 // Allocate memory for the closure | |
| 3771 elem* e; | |
| 3772 e = el_long(TYM.TYint, offset); | |
| 3773 e = el_bin(OPER.OPcall, TYM.TYnptr, el_var(rtlsym[RTLSYM.RTLSYM_ALLOCMEMORY]), e); | |
| 3774 | |
| 3775 // Assign block of memory to sclosure | |
| 3776 // sclosure = allocmemory(sz); | |
| 3777 e = el_bin(OPER.OPeq, TYM.TYvoid, el_var(sclosure), e); | |
| 3778 | |
| 3779 // Set the first element to sthis | |
| 3780 // *(sclosure + 0) = sthis; | |
| 3781 elem* ethis; | |
| 3782 if (irs.sthis) | |
| 3783 ethis = el_var(irs.sthis); | |
| 3784 else | |
| 3785 ethis = el_long(TYM.TYnptr, 0); | |
| 3786 elem *ex = el_una(OPER.OPind, TYM.TYnptr, el_var(sclosure)); | |
| 3787 ex = el_bin(OPER.OPeq, TYM.TYnptr, ex, ethis); | |
| 3788 e = el_combine(e, ex); | |
| 3789 | |
| 3790 // Copy function parameters into closure | |
|
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3791 foreach (Dsymbol s3; closureVars) |
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3792 { auto v = cast(VarDeclaration)s3; |
| 0 | 3793 |
| 3794 if (!v.isParameter()) | |
| 3795 continue; | |
| 3796 TYM tym = v.type.totym(); | |
| 3797 if (v.type.toBasetype().ty == TY.Tsarray || v.isOut() || v.isRef()) | |
| 3798 tym = TYM.TYnptr; // reference parameters are just pointers | |
| 3799 /// version (DMDV2) { | |
| 3800 else if (v.storage_class & STC.STClazy) | |
| 3801 tym = TYM.TYdelegate; | |
| 3802 /// } | |
| 3803 ex = el_bin(OPER.OPadd, TYM.TYnptr, el_var(sclosure), el_long(TYM.TYint, v.offset)); | |
| 3804 ex = el_una(OPER.OPind, tym, ex); | |
| 3805 if (ex.Ety == TYM.TYstruct) | |
| 3806 { | |
| 3807 ex.Enumbytes = cast(uint)v.type.size(); | |
| 3808 ex = el_bin(OPER.OPstreq, tym, ex, el_var(v.toSymbol())); | |
| 3809 ex.Enumbytes = cast(uint)v.type.size(); | |
| 3810 } | |
| 3811 else | |
| 3812 { | |
| 3813 ex = el_bin(OPER.OPeq, tym, ex, el_var(v.toSymbol())); | |
| 3814 } | |
| 3815 | |
| 3816 e = el_combine(e, ex); | |
| 3817 } | |
| 3818 | |
| 3819 block_appendexp(irs.blx.curblock, e); | |
| 3820 } | |
| 3821 } | |
| 3822 | |
| 72 | 3823 override FuncDeclaration isFuncDeclaration() { return this; } |
| 3824 } | |
|
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3825 |
|
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3826 alias Vector!FuncDeclaration FuncDeclarations; |