Mercurial > projects > ddmd
annotate dmd/CallExp.d @ 77:ad4792a1cfd6
more D-ification container accessing
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Sun, 29 Aug 2010 14:36:55 +0100 |
| parents | ef02e2e203c2 |
| children | 43073c7c7769 |
| rev | line source |
|---|---|
| 72 | 1 module dmd.CallExp; |
| 2 | |
| 3 import dmd.Expression; | |
| 4 import dmd.Cast; | |
| 5 import dmd.WANT; | |
| 6 import dmd.BUILTIN; | |
| 7 import dmd.TypeFunction; | |
| 8 import dmd.ScopeDsymbol; | |
| 9 import dmd.CastExp; | |
| 10 import dmd.GlobalExpressions; | |
| 11 import dmd.TypePointer; | |
| 12 import dmd.ThisExp; | |
| 13 import dmd.OverExp; | |
| 14 import dmd.Dsymbol; | |
| 15 import dmd.CSX; | |
| 16 import dmd.AggregateDeclaration; | |
| 17 import dmd.TypeDelegate; | |
| 18 import dmd.ClassDeclaration; | |
| 19 import dmd.DsymbolExp; | |
| 20 import dmd.DotExp; | |
| 21 import dmd.TemplateExp; | |
| 22 import dmd.TypeStruct; | |
| 23 import dmd.TypeClass; | |
| 24 import dmd.Identifier; | |
| 25 import dmd.Lexer; | |
| 26 import dmd.VarDeclaration; | |
| 27 import dmd.DeclarationExp; | |
| 28 import dmd.CtorDeclaration; | |
| 29 import dmd.PtrExp; | |
| 30 import dmd.TemplateDeclaration; | |
| 31 import dmd.StructLiteralExp; | |
| 32 import dmd.StructDeclaration; | |
| 33 import dmd.DotTemplateExp; | |
| 34 import dmd.CommaExp; | |
| 35 import dmd.AggregateDeclaration; | |
| 36 import dmd.FuncDeclaration; | |
| 37 import dmd.Type; | |
| 38 import dmd.ScopeExp; | |
| 39 import dmd.VarExp; | |
| 40 import dmd.STC; | |
| 41 import dmd.LINK; | |
| 42 import dmd.Global; | |
| 43 import dmd.DotTemplateInstanceExp; | |
| 44 import dmd.TemplateInstance; | |
| 45 import dmd.DelegateExp; | |
| 46 import dmd.IdentifierExp; | |
| 47 import dmd.DotVarExp; | |
| 48 import dmd.DotIdExp; | |
| 49 import dmd.TY; | |
| 50 import dmd.Id; | |
| 51 import dmd.TypeAArray; | |
| 52 import dmd.RemoveExp; | |
| 53 import dmd.backend.elem; | |
| 54 import dmd.UnaExp; | |
| 55 import dmd.InterState; | |
| 56 import dmd.OutBuffer; | |
| 57 import dmd.Loc; | |
| 58 import dmd.Scope; | |
| 59 import dmd.InlineCostState; | |
| 60 import dmd.IRState; | |
| 61 import dmd.InlineDoState; | |
| 62 import dmd.HdrGenState; | |
| 63 import dmd.InlineScanState; | |
| 64 import dmd.ArrayTypes; | |
| 65 import dmd.TOK; | |
| 66 import dmd.PREC; | |
| 67 import dmd.expression.Util; | |
| 68 import dmd.backend.Symbol; | |
| 69 import dmd.backend.TYPE; | |
| 70 import dmd.backend.Util; | |
| 71 import dmd.backend.TYM; | |
| 72 import dmd.codegen.Util; | |
| 73 | |
| 74 import std.stdio; | |
| 75 | |
| 0 | 76 class CallExp : UnaExp |
| 77 { | |
| 78 Expressions arguments; | |
| 79 | |
| 80 this(Loc loc, Expression e, Expressions exps) | |
| 81 { | |
| 72 | 82 super(loc, TOK.TOKcall, CallExp.sizeof, e); |
| 0 | 83 this.arguments = exps; |
| 84 } | |
| 85 | |
| 86 this(Loc loc, Expression e) | |
| 87 { | |
| 88 super(loc, TOK.TOKcall, CallExp.sizeof, e); | |
| 89 } | |
| 90 | |
| 91 this(Loc loc, Expression e, Expression earg1) | |
| 92 { | |
| 72 | 93 super(loc, TOK.TOKcall, CallExp.sizeof, e); |
| 94 | |
| 95 Expressions arguments = new Expressions(); | |
| 73 | 96 if (earg1) |
| 97 { | |
| 98 arguments.setDim(1); | |
| 99 arguments.data[0] = cast(void*)earg1; | |
| 100 } | |
| 0 | 101 this.arguments = arguments; |
| 102 } | |
| 103 | |
| 104 this(Loc loc, Expression e, Expression earg1, Expression earg2) | |
| 72 | 105 { |
| 106 super(loc, TOK.TOKcall, CallExp.sizeof, e); | |
| 66 | 107 |
| 72 | 108 Expressions arguments = new Expressions(); |
| 109 arguments.setDim(2); | |
| 110 arguments.data[0] = cast(void*)earg1; | |
| 111 arguments.data[1] = cast(void*)earg2; | |
| 112 | |
| 66 | 113 this.arguments = arguments; |
| 0 | 114 } |
| 115 | |
| 72 | 116 override Expression syntaxCopy() |
| 0 | 117 { |
| 118 return new CallExp(loc, e1.syntaxCopy(), arraySyntaxCopy(arguments)); | |
| 119 } | |
| 120 | |
| 72 | 121 override Expression semantic(Scope sc) |
| 122 { | |
| 123 TypeFunction tf; | |
| 124 FuncDeclaration f; | |
| 125 int i; | |
| 126 Type t1; | |
| 127 int istemp; | |
| 128 Objects targsi; // initial list of template arguments | |
| 129 TemplateInstance tierror; | |
| 130 | |
| 131 version (LOGSEMANTIC) { | |
| 132 printf("CallExp.semantic() %s\n", toChars()); | |
| 133 } | |
| 134 if (type) | |
| 135 return this; // semantic() already run | |
| 136 | |
| 137 static if (false) { | |
| 138 if (arguments && arguments.dim) | |
| 139 { | |
| 140 Expression earg = cast(Expression)arguments.data[0]; | |
| 141 earg.print(); | |
| 142 if (earg.type) earg.type.print(); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 if (e1.op == TOK.TOKdelegate) | |
| 147 { | |
| 148 DelegateExp de = cast(DelegateExp)e1; | |
| 149 | |
| 150 e1 = new DotVarExp(de.loc, de.e1, de.func); | |
| 151 return semantic(sc); | |
| 152 } | |
| 153 | |
| 154 /* Transform: | |
| 155 * array.id(args) into .id(array,args) | |
| 156 * aa.remove(arg) into delete aa[arg] | |
| 157 */ | |
| 158 if (e1.op == TOK.TOKdot) | |
| 159 { | |
| 160 // BUG: we should handle array.a.b.c.e(args) too | |
| 161 | |
| 162 DotIdExp dotid = cast(DotIdExp)(e1); | |
| 163 dotid.e1 = dotid.e1.semantic(sc); | |
| 164 assert(dotid.e1); | |
| 165 if (dotid.e1.type) | |
| 166 { | |
| 167 TY e1ty = dotid.e1.type.toBasetype().ty; | |
| 168 if (e1ty == TY.Taarray && dotid.ident == Id.remove) | |
| 169 { | |
| 170 if (!arguments || arguments.dim != 1) | |
| 171 { | |
| 172 error("expected key as argument to aa.remove()"); | |
| 173 goto Lagain; | |
| 174 } | |
| 175 Expression key = cast(Expression)arguments.data[0]; | |
| 176 key = key.semantic(sc); | |
| 177 key = resolveProperties(sc, key); | |
| 178 key.rvalue(); | |
| 179 | |
| 180 TypeAArray taa = cast(TypeAArray)dotid.e1.type.toBasetype(); | |
| 181 key = key.implicitCastTo(sc, taa.index); | |
| 182 | |
| 183 return new RemoveExp(loc, dotid.e1, key); | |
| 184 } | |
| 185 else if (e1ty == TY.Tarray || e1ty == TY.Tsarray || e1ty == TY.Taarray) | |
| 186 { | |
| 187 if (!arguments) | |
| 188 arguments = new Expressions(); | |
| 189 arguments.shift(cast(void*)dotid.e1); | |
| 190 version (DMDV2) { | |
| 191 e1 = new DotIdExp(dotid.loc, new IdentifierExp(dotid.loc, Id.empty), dotid.ident); | |
| 192 } else { | |
| 193 e1 = new IdentifierExp(dotid.loc, dotid.ident); | |
| 194 } | |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 static if (true) { | |
| 200 /* This recognizes: | |
| 201 * foo!(tiargs)(funcargs) | |
| 202 */ | |
| 203 if (e1.op == TOK.TOKimport && !e1.type) | |
| 204 { | |
| 205 ScopeExp se = cast(ScopeExp)e1; | |
| 206 TemplateInstance ti = se.sds.isTemplateInstance(); | |
| 207 if (ti && !ti.semanticRun) | |
| 208 { | |
| 209 /* Attempt to instantiate ti. If that works, go with it. | |
| 210 * If not, go with partial explicit specialization. | |
| 211 */ | |
| 212 ti.semanticTiargs(sc); | |
| 213 uint errors = global.errors; | |
| 214 global.gag++; | |
| 215 ti.semantic(sc); | |
| 216 global.gag--; | |
| 217 if (errors != global.errors) | |
| 218 { | |
| 219 /* Didn't work, go with partial explicit specialization | |
| 220 */ | |
| 221 global.errors = errors; | |
| 222 targsi = ti.tiargs; | |
| 223 tierror = ti; // for error reporting | |
| 224 e1 = new IdentifierExp(loc, ti.name); | |
| 225 } | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 /* This recognizes: | |
| 230 * expr.foo!(tiargs)(funcargs) | |
| 231 */ | |
| 232 if (e1.op == TOK.TOKdotti && !e1.type) | |
| 233 { | |
| 234 DotTemplateInstanceExp se = cast(DotTemplateInstanceExp)e1; | |
| 235 TemplateInstance ti = se.ti; | |
| 236 if (!ti.semanticRun) | |
| 237 { | |
| 238 /* Attempt to instantiate ti. If that works, go with it. | |
| 239 * If not, go with partial explicit specialization. | |
| 240 */ | |
| 241 ti.semanticTiargs(sc); | |
| 242 Expression etmp = e1.trySemantic(sc); | |
| 243 if (etmp) | |
| 244 e1 = etmp; // it worked | |
| 245 else // didn't work | |
| 246 { | |
| 247 targsi = ti.tiargs; | |
| 248 tierror = ti; // for error reporting | |
| 249 e1 = new DotIdExp(loc, se.e1, ti.name); | |
| 250 } | |
| 251 } | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 istemp = 0; | |
| 256 Lagain: | |
| 257 //printf("Lagain: %s\n", toChars()); | |
| 258 f = null; | |
| 259 if (e1.op == TOK.TOKthis || e1.op == TOK.TOKsuper) | |
| 260 { | |
| 261 // semantic() run later for these | |
| 262 } | |
| 263 else | |
| 264 { | |
| 265 UnaExp.semantic(sc); | |
| 266 | |
| 267 /* Look for e1 being a lazy parameter | |
| 268 */ | |
| 269 if (e1.op == TOK.TOKvar) | |
| 270 { | |
| 271 VarExp ve = cast(VarExp)e1; | |
| 272 | |
| 273 if (ve.var.storage_class & STC.STClazy) | |
| 274 { | |
| 275 TypeFunction tff = new TypeFunction(null, ve.var.type, 0, LINK.LINKd); | |
| 276 TypeDelegate t = new TypeDelegate(tff); | |
| 277 ve.type = t.semantic(loc, sc); | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 if (e1.op == TOK.TOKimport) | |
| 282 { | |
| 283 // Perhaps this should be moved to ScopeExp.semantic() | |
| 284 ScopeExp se = cast(ScopeExp)e1; | |
| 285 e1 = new DsymbolExp(loc, se.sds); | |
| 286 e1 = e1.semantic(sc); | |
| 287 } | |
| 288 ///static if (true) { // patch for #540 by Oskar Linde | |
| 289 else if (e1.op == TOK.TOKdotexp) | |
| 290 { | |
| 291 DotExp de = cast(DotExp)e1; | |
| 292 | |
| 293 if (de.e2.op == TOK.TOKimport) | |
| 294 { | |
| 295 // This should *really* be moved to ScopeExp.semantic() | |
| 296 ScopeExp se = cast(ScopeExp)de.e2; | |
| 297 de.e2 = new DsymbolExp(loc, se.sds); | |
| 298 de.e2 = de.e2.semantic(sc); | |
| 299 } | |
| 300 | |
| 301 if (de.e2.op == TOK.TOKtemplate) | |
| 302 { | |
| 303 TemplateExp te = cast(TemplateExp)de.e2; | |
| 304 e1 = new DotTemplateExp(loc,de.e1,te.td); | |
| 305 } | |
| 306 } | |
| 307 ///} | |
| 308 } | |
| 309 | |
| 310 if (e1.op == TOK.TOKcomma) | |
| 311 { | |
| 312 CommaExp ce = cast(CommaExp)e1; | |
| 313 | |
| 314 e1 = ce.e2; | |
| 315 e1.type = ce.type; | |
| 316 ce.e2 = this; | |
| 317 ce.type = null; | |
| 318 return ce.semantic(sc); | |
| 319 } | |
| 320 | |
| 321 t1 = null; | |
| 322 if (e1.type) | |
| 323 t1 = e1.type.toBasetype(); | |
| 324 | |
| 325 // Check for call operator overload | |
| 326 if (t1) | |
| 327 { | |
| 328 AggregateDeclaration ad; | |
| 329 | |
| 330 if (t1.ty == TY.Tstruct) | |
| 331 { | |
| 332 ad = (cast(TypeStruct)t1).sym; | |
| 333 version (DMDV2) { | |
| 334 // First look for constructor | |
| 335 if (ad.ctor && arguments && arguments.dim) | |
| 336 { | |
| 337 // Create variable that will get constructed | |
| 338 Identifier idtmp = Lexer.uniqueId("__ctmp"); | |
| 339 VarDeclaration tmp = new VarDeclaration(loc, t1, idtmp, null); | |
| 340 Expression av = new DeclarationExp(loc, tmp); | |
| 341 av = new CommaExp(loc, av, new VarExp(loc, tmp)); | |
| 342 | |
| 343 Expression e; | |
| 344 CtorDeclaration cf = ad.ctor.isCtorDeclaration(); | |
| 345 if (cf) | |
| 346 e = new DotVarExp(loc, av, cf, 1); | |
| 347 else | |
| 348 { | |
| 349 TemplateDeclaration td = ad.ctor.isTemplateDeclaration(); | |
| 350 assert(td); | |
| 351 e = new DotTemplateExp(loc, av, td); | |
| 352 } | |
| 353 e = new CallExp(loc, e, arguments); | |
| 354 version (STRUCTTHISREF) { | |
| 355 } else { | |
| 356 /* Constructors return a pointer to the instance | |
| 357 */ | |
| 358 e = new PtrExp(loc, e); | |
| 359 } | |
| 360 e = e.semantic(sc); | |
| 361 return e; | |
| 362 } | |
| 363 } | |
| 364 // No constructor, look for overload of opCall | |
| 365 if (search_function(ad, Id.call)) | |
| 366 goto L1; // overload of opCall, therefore it's a call | |
| 367 | |
| 368 if (e1.op != TOK.TOKtype) | |
| 369 error("%s %s does not overload ()", ad.kind(), ad.toChars()); | |
| 370 | |
| 371 /* It's a struct literal | |
| 372 */ | |
| 373 Expression e = new StructLiteralExp(loc, cast(StructDeclaration)ad, arguments); | |
| 374 e = e.semantic(sc); | |
| 375 e.type = e1.type; // in case e1.type was a typedef | |
| 376 return e; | |
| 377 } | |
| 378 else if (t1.ty == TY.Tclass) | |
| 379 { | |
| 380 ad = (cast(TypeClass)t1).sym; | |
| 381 goto L1; | |
| 382 L1: | |
| 383 // Rewrite as e1.call(arguments) | |
| 384 Expression e = new DotIdExp(loc, e1, Id.call); | |
| 385 e = new CallExp(loc, e, arguments); | |
| 386 e = e.semantic(sc); | |
| 387 return e; | |
| 388 } | |
| 389 } | |
| 390 | |
| 391 arrayExpressionSemantic(arguments, sc); | |
| 392 preFunctionArguments(loc, sc, arguments); | |
| 393 | |
| 394 if (e1.op == TOK.TOKdotvar && t1.ty == TY.Tfunction || | |
| 395 e1.op == TOK.TOKdottd) | |
| 396 { | |
| 397 DotVarExp dve; | |
| 398 DotTemplateExp dte; | |
| 399 AggregateDeclaration ad; | |
| 400 UnaExp ue = cast(UnaExp)e1; | |
| 401 | |
| 402 if (e1.op == TOK.TOKdotvar) | |
| 403 { | |
| 404 // Do overload resolution | |
| 405 dve = cast(DotVarExp)e1; | |
| 406 | |
| 407 f = dve.var.isFuncDeclaration(); | |
| 408 assert(f); | |
| 409 f = f.overloadResolve(loc, ue.e1, arguments); | |
| 410 | |
| 411 ad = f.toParent().isAggregateDeclaration(); | |
| 412 } | |
| 413 else | |
| 414 { | |
| 415 dte = cast(DotTemplateExp)e1; | |
| 416 TemplateDeclaration td = dte.td; | |
| 417 assert(td); | |
| 418 | |
| 419 if (!arguments) | |
| 420 // Should fix deduceFunctionTemplate() so it works on null argument | |
| 421 arguments = new Expressions(); | |
| 422 | |
| 423 f = td.deduceFunctionTemplate(sc, loc, targsi, ue.e1, arguments); | |
| 424 if (!f) | |
| 425 { | |
| 426 type = Type.terror; | |
| 427 return this; | |
| 428 } | |
| 429 ad = td.toParent().isAggregateDeclaration(); | |
| 430 } | |
| 431 | |
| 432 if (f.needThis()) | |
| 433 { | |
| 434 ue.e1 = getRightThis(loc, sc, ad, ue.e1, f); | |
| 435 } | |
| 436 | |
| 437 /* Cannot call public functions from inside invariant | |
| 438 * (because then the invariant would have infinite recursion) | |
| 439 */ | |
| 440 if (sc.func && sc.func.isInvariantDeclaration() && | |
| 441 ue.e1.op == TOK.TOKthis && f.addPostInvariant()) | |
| 442 { | |
| 443 error("cannot call public/export function %s from invariant", f.toChars()); | |
| 444 } | |
| 445 | |
| 446 checkDeprecated(sc, f); | |
| 447 version (DMDV2) { | |
| 448 checkPurity(sc, f); | |
| 449 } | |
| 450 accessCheck(loc, sc, ue.e1, f); | |
| 451 if (!f.needThis()) | |
| 452 { | |
| 453 VarExp ve = new VarExp(loc, f); | |
| 454 e1 = new CommaExp(loc, ue.e1, ve); | |
| 455 e1.type = f.type; | |
| 456 } | |
| 457 else | |
| 458 { | |
| 459 if (e1.op == TOK.TOKdotvar) | |
| 460 dve.var = f; | |
| 461 else | |
| 462 e1 = new DotVarExp(loc, dte.e1, f); | |
| 463 | |
| 464 e1.type = f.type; | |
| 465 static if (false) { | |
| 466 printf("ue.e1 = %s\n", ue.e1.toChars()); | |
| 467 printf("f = %s\n", f.toChars()); | |
| 468 printf("t = %s\n", t.toChars()); | |
| 469 printf("e1 = %s\n", e1.toChars()); | |
| 470 printf("e1.type = %s\n", e1.type.toChars()); | |
| 471 } | |
| 472 // Const member function can take const/immutable/mutable this | |
| 473 if (!(f.type.isConst())) | |
| 474 { | |
| 475 // Check for const/immutable compatibility | |
| 476 Type tthis = ue.e1.type.toBasetype(); | |
| 477 if (tthis.ty == TY.Tpointer) | |
| 478 tthis = tthis.nextOf().toBasetype(); | |
| 479 | |
| 480 static if (false) { // this checking should have been already done | |
| 481 if (f.type.isInvariant()) | |
| 482 { | |
| 483 if (tthis.mod != MOD.MODinvariant) | |
| 484 error("%s can only be called with an immutable object", e1.toChars()); | |
| 485 } | |
| 486 else if (f.type.isShared()) | |
| 487 { | |
| 488 if (tthis.mod != MOD.MODinvariant && tthis.mod != MOD.MODshared && tthis.mod != (MOD.MODshared | MOD.MODconst)) | |
| 489 error("shared %s can only be called with a shared or immutable object", e1.toChars()); | |
| 490 } | |
| 491 else | |
| 492 { | |
| 493 if (tthis.mod != MOD.MODundefined) | |
| 494 { | |
| 495 //printf("mod = %x\n", tthis.mod); | |
| 496 error("%s can only be called with a mutable object, not %s", e1.toChars(), tthis.toChars()); | |
| 497 } | |
| 498 } | |
| 499 } | |
| 500 /* Cannot call mutable method on a final struct | |
| 501 */ | |
| 502 if (tthis.ty == TY.Tstruct && | |
| 503 ue.e1.op == TOK.TOKvar) | |
| 504 { | |
| 505 VarExp v = cast(VarExp)ue.e1; | |
| 506 if (v.var.storage_class & STC.STCfinal) | |
| 507 error("cannot call mutable method on final struct"); | |
| 508 } | |
| 509 } | |
| 510 | |
| 511 // See if we need to adjust the 'this' pointer | |
| 512 AggregateDeclaration add = f.isThis(); | |
| 513 ClassDeclaration cd = ue.e1.type.isClassHandle(); | |
| 514 if (add && cd && add.isClassDeclaration() && add != cd && ue.e1.op != TOK.TOKsuper) | |
| 515 { | |
| 516 ue.e1 = ue.e1.castTo(sc, add.type); //new CastExp(loc, ue.e1, add.type); | |
| 517 ue.e1 = ue.e1.semantic(sc); | |
| 518 } | |
| 519 } | |
| 520 t1 = e1.type; | |
| 521 } | |
| 522 else if (e1.op == TOK.TOKsuper) | |
| 523 { | |
| 524 // Base class constructor call | |
| 525 ClassDeclaration cd = null; | |
| 526 | |
| 527 if (sc.func) | |
| 528 cd = sc.func.toParent().isClassDeclaration(); | |
| 529 if (!cd || !cd.baseClass || !sc.func.isCtorDeclaration()) | |
| 530 { | |
| 531 error("super class constructor call must be in a constructor"); | |
| 532 type = Type.terror; | |
| 533 return this; | |
| 534 } | |
| 535 else | |
| 536 { | |
| 537 if (!cd.baseClass.ctor) | |
| 538 { | |
| 539 error("no super class constructor for %s", cd.baseClass.toChars()); | |
| 540 type = Type.terror; | |
| 541 return this; | |
| 542 } | |
| 543 else | |
| 544 { | |
| 545 if (!sc.intypeof) | |
| 546 { | |
| 547 static if (false) { | |
| 548 if (sc.callSuper & (CSX.CSXthis | CSX.CSXsuper)) | |
| 549 error("reference to this before super()"); | |
| 550 } | |
| 551 if (sc.noctor || sc.callSuper & CSX.CSXlabel) | |
| 552 error("constructor calls not allowed in loops or after labels"); | |
| 553 if (sc.callSuper & (CSX.CSXsuper_ctor | CSX.CSXthis_ctor)) | |
| 554 error("multiple constructor calls"); | |
| 555 sc.callSuper |= CSX.CSXany_ctor | CSX.CSXsuper_ctor; | |
| 556 } | |
| 557 | |
| 558 f = resolveFuncCall(sc, loc, cd.baseClass.ctor, null, null, arguments, 0); | |
| 559 checkDeprecated(sc, f); | |
| 560 version (DMDV2) { | |
| 561 checkPurity(sc, f); | |
| 562 } | |
| 563 e1 = new DotVarExp(e1.loc, e1, f); | |
| 564 e1 = e1.semantic(sc); | |
| 565 t1 = e1.type; | |
| 566 } | |
| 567 } | |
| 568 } | |
| 569 else if (e1.op == TOK.TOKthis) | |
| 570 { | |
| 571 // same class constructor call | |
| 572 AggregateDeclaration cd = null; | |
| 573 | |
| 574 if (sc.func) | |
| 575 cd = sc.func.toParent().isAggregateDeclaration(); | |
| 576 if (!cd || !sc.func.isCtorDeclaration()) | |
| 577 { | |
| 578 error("constructor call must be in a constructor"); | |
| 579 type = Type.terror; | |
| 580 return this; | |
| 581 } | |
| 582 else | |
| 583 { | |
| 584 if (!sc.intypeof) | |
| 585 { | |
| 586 static if (false) { | |
| 587 if (sc.callSuper & (CSXthis | CSXsuper)) | |
| 588 error("reference to this before super()"); | |
| 589 } | |
| 590 if (sc.noctor || sc.callSuper & CSX.CSXlabel) | |
| 591 error("constructor calls not allowed in loops or after labels"); | |
| 592 if (sc.callSuper & (CSX.CSXsuper_ctor | CSX.CSXthis_ctor)) | |
| 593 error("multiple constructor calls"); | |
| 594 sc.callSuper |= CSX.CSXany_ctor | CSX.CSXthis_ctor; | |
| 595 } | |
| 596 | |
| 597 f = resolveFuncCall(sc, loc, cd.ctor, null, null, arguments, 0); | |
| 598 checkDeprecated(sc, f); | |
| 599 version (DMDV2) { | |
| 600 checkPurity(sc, f); | |
| 601 } | |
| 602 e1 = new DotVarExp(e1.loc, e1, f); | |
| 603 e1 = e1.semantic(sc); | |
| 604 t1 = e1.type; | |
| 605 | |
| 606 // BUG: this should really be done by checking the static | |
| 607 // call graph | |
| 608 if (f == sc.func) | |
| 609 error("cyclic constructor call"); | |
| 610 } | |
| 611 } | |
| 612 else if (e1.op == TOK.TOKoverloadset) | |
| 613 { | |
| 614 OverExp eo = cast(OverExp)e1; | |
| 615 FuncDeclaration ff = null; | |
|
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|
616 foreach(Dsymbol s; eo.vars.a) |
| 72 | 617 { |
| 618 FuncDeclaration f2 = s.isFuncDeclaration(); | |
| 619 if (f2) | |
| 620 { | |
| 621 f2 = f2.overloadResolve(loc, null, arguments, 1); | |
| 622 } | |
| 623 else | |
| 624 { | |
| 625 TemplateDeclaration td = s.isTemplateDeclaration(); | |
| 626 assert(td); | |
| 627 f2 = td.deduceFunctionTemplate(sc, loc, targsi, null, arguments, 1); | |
| 628 } | |
| 629 if (f2) | |
| 630 { | |
| 631 if (ff) | |
| 632 /* Error if match in more than one overload set, | |
| 633 * even if one is a 'better' match than the other. | |
| 634 */ | |
| 635 ScopeDsymbol.multiplyDefined(loc, ff, f2); | |
| 636 else | |
| 637 ff = f2; | |
| 638 } | |
| 639 } | |
| 640 if (!ff) | |
| 641 { | |
| 642 /* No overload matches, just set ff and rely on error | |
| 643 * message being generated later. | |
| 644 */ | |
|
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changeset
|
645 ff = cast(FuncDeclaration)eo.vars.a[0]; |
| 72 | 646 } |
| 647 e1 = new VarExp(loc, ff); | |
| 648 goto Lagain; | |
| 649 } | |
| 650 else if (!t1) | |
| 651 { | |
| 652 error("function expected before (), not '%s'", e1.toChars()); | |
| 653 type = Type.terror; | |
| 654 return this; | |
| 655 } | |
| 656 else if (t1.ty != TY.Tfunction) | |
| 657 { | |
| 658 if (t1.ty == TY.Tdelegate) | |
| 659 { | |
| 660 TypeDelegate td = cast(TypeDelegate)t1; | |
| 661 assert(td.next.ty == TY.Tfunction); | |
| 662 tf = cast(TypeFunction)(td.next); | |
| 663 if (sc.func && sc.func.isPure() && !tf.ispure) | |
| 664 { | |
| 665 error("pure function '%s' cannot call impure delegate '%s'", sc.func.toChars(), e1.toChars()); | |
| 666 } | |
| 667 goto Lcheckargs; | |
| 668 } | |
| 669 else if (t1.ty == TY.Tpointer && (cast(TypePointer)t1).next.ty == TY.Tfunction) | |
| 670 { | |
| 671 Expression e = new PtrExp(loc, e1); | |
| 672 t1 = (cast(TypePointer)t1).next; | |
| 673 if (sc.func && sc.func.isPure() && !(cast(TypeFunction)t1).ispure) | |
| 674 { | |
| 675 error("pure function '%s' cannot call impure function pointer '%s'", sc.func.toChars(), e1.toChars()); | |
| 676 } | |
| 677 e.type = t1; | |
| 678 e1 = e; | |
| 679 } | |
| 680 else if (e1.op == TOK.TOKtemplate) | |
| 681 { | |
| 682 TemplateExp te = cast(TemplateExp)e1; | |
| 683 f = te.td.deduceFunctionTemplate(sc, loc, targsi, null, arguments); | |
| 684 if (!f) | |
| 685 { | |
| 686 if (tierror) | |
| 687 tierror.error("errors instantiating template"); // give better error message | |
| 688 type = Type.terror; | |
| 689 return this; | |
| 690 } | |
| 691 if (f.needThis() && hasThis(sc)) | |
| 692 { | |
| 693 // Supply an implicit 'this', as in | |
| 694 // this.ident | |
| 695 | |
| 696 e1 = new DotTemplateExp(loc, (new ThisExp(loc)).semantic(sc), te.td); | |
| 697 goto Lagain; | |
| 698 } | |
| 699 | |
| 700 e1 = new VarExp(loc, f); | |
| 701 goto Lagain; | |
| 702 } | |
| 703 else | |
| 704 { | |
| 705 error("function expected before (), not %s of type %s", e1.toChars(), e1.type.toChars()); | |
| 706 type = Type.terror; | |
| 707 return this; | |
| 708 } | |
| 709 } | |
| 710 else if (e1.op == TOK.TOKvar) | |
| 711 { | |
| 712 // Do overload resolution | |
| 713 VarExp ve = cast(VarExp)e1; | |
| 714 | |
| 715 f = ve.var.isFuncDeclaration(); | |
| 716 assert(f); | |
| 717 | |
| 718 if (ve.hasOverloads) | |
| 719 f = f.overloadResolve(loc, null, arguments); | |
| 720 | |
| 721 checkDeprecated(sc, f); | |
| 722 version (DMDV2) { | |
| 723 checkPurity(sc, f); | |
| 724 } | |
| 725 | |
| 726 if (f.needThis() && hasThis(sc)) | |
| 727 { | |
| 728 // Supply an implicit 'this', as in | |
| 729 // this.ident | |
| 730 | |
| 731 e1 = new DotVarExp(loc, new ThisExp(loc), f); | |
| 732 goto Lagain; | |
| 733 } | |
| 734 | |
| 735 accessCheck(loc, sc, null, f); | |
| 736 | |
| 737 ve.var = f; | |
| 73 | 738 // ve.hasOverloads = false; |
| 72 | 739 ve.type = f.type; |
| 740 t1 = f.type; | |
| 741 } | |
| 742 assert(t1.ty == TY.Tfunction); | |
| 743 tf = cast(TypeFunction)t1; | |
| 744 | |
| 745 Lcheckargs: | |
| 746 assert(tf.ty == TY.Tfunction); | |
| 747 type = tf.next; | |
| 748 | |
| 749 if (!arguments) | |
| 750 arguments = new Expressions(); | |
| 751 | |
| 752 functionArguments(loc, sc, tf, arguments); | |
| 753 | |
| 754 if (!type) | |
| 755 { | |
| 756 error("forward reference to inferred return type of function call %s", toChars()); | |
| 757 type = Type.terror; | |
| 758 } | |
| 759 | |
| 760 if (f && f.tintro) | |
| 761 { | |
| 762 Type t = type; | |
| 763 int offset = 0; | |
| 764 TypeFunction tff = cast(TypeFunction)f.tintro; | |
| 765 | |
| 766 if (tff.next.isBaseOf(t, &offset) && offset) | |
| 767 { | |
| 768 type = tff.next; | |
| 769 return castTo(sc, t); | |
| 770 } | |
| 771 } | |
| 772 | |
| 773 return this; | |
| 0 | 774 } |
| 775 | |
| 72 | 776 override Expression optimize(int result) |
| 0 | 777 { |
| 72 | 778 //printf("CallExp::optimize(result = %d) %s\n", result, toChars()); |
| 779 Expression e = this; | |
| 780 | |
| 781 // Optimize parameters | |
| 782 if (arguments) | |
| 783 { | |
| 784 for (size_t i = 0; i < arguments.dim; i++) | |
| 785 { | |
| 786 Expression ee = cast(Expression)arguments.data[i]; | |
| 787 | |
| 788 ee = ee.optimize(WANT.WANTvalue); | |
| 789 arguments.data[i] = cast(void*)ee; | |
| 790 } | |
| 791 } | |
| 792 | |
| 793 e1 = e1.optimize(result); | |
| 794 if (e1.op == TOK.TOKvar) | |
| 795 { | |
| 796 FuncDeclaration fd = (cast(VarExp)e1).var.isFuncDeclaration(); | |
| 797 if (fd) | |
| 798 { | |
| 799 BUILTIN b = fd.isBuiltin(); | |
| 800 if (b) | |
| 801 { | |
| 802 e = eval_builtin(b, arguments); | |
| 803 if (!e) // failed | |
| 804 e = this; // evaluate at runtime | |
| 805 } | |
| 806 else if (result & WANT.WANTinterpret) | |
| 807 { | |
| 808 Expression eresult = fd.interpret(null, arguments); | |
| 809 if (eresult && eresult !is EXP_VOID_INTERPRET) | |
| 810 e = eresult; | |
| 811 else | |
| 812 error("cannot evaluate %s at compile time", toChars()); | |
| 813 } | |
| 814 } | |
| 815 } | |
| 816 | |
| 0 | 817 return e; |
| 818 } | |
| 819 | |
| 72 | 820 override Expression interpret(InterState istate) |
| 0 | 821 { |
| 72 | 822 Expression e = EXP_CANT_INTERPRET; |
| 823 | |
| 824 version (LOG) { | |
| 825 printf("CallExp.interpret() %.*s\n", toChars()); | |
| 826 } | |
| 827 if (e1.op == TOKdotvar) | |
| 828 { | |
| 829 Expression pthis = (cast(DotVarExp)e1).e1; | |
| 830 FuncDeclaration fd = (cast(DotVarExp)e1).var.isFuncDeclaration(); | |
| 831 TypeFunction tf = fd ? cast(TypeFunction)fd.type : null; | |
| 832 if (tf) | |
| 833 { | |
| 834 // Member function call | |
| 835 if(pthis.op == TOKthis) | |
| 836 pthis = istate.localThis; | |
| 837 Expression eresult = fd.interpret(istate, arguments, pthis); | |
| 838 if (eresult) | |
| 839 e = eresult; | |
| 840 else if (fd.type.toBasetype().nextOf().ty == Tvoid && !global.errors) | |
| 841 e = EXP_VOID_INTERPRET; | |
| 842 else | |
| 843 error("cannot evaluate %s at compile time", toChars()); | |
| 844 return e; | |
| 845 } | |
| 846 error("cannot evaluate %s at compile time", toChars()); | |
| 847 return EXP_CANT_INTERPRET; | |
| 848 } | |
| 849 if (e1.op == TOKvar) | |
| 850 { | |
| 851 FuncDeclaration fd = (cast(VarExp)e1).var.isFuncDeclaration(); | |
| 852 if (fd) | |
| 853 { | |
| 854 ///version (DMDV2) { | |
| 855 BUILTIN b = fd.isBuiltin(); | |
| 856 if (b) | |
| 857 { | |
| 858 scope Expressions args = new Expressions(); | |
| 859 args.setDim(arguments.dim); | |
| 860 for (size_t i = 0; i < args.dim; i++) | |
| 861 { | |
| 862 Expression earg = cast(Expression)arguments.data[i]; | |
| 863 earg = earg.interpret(istate); | |
| 864 if (earg == EXP_CANT_INTERPRET) | |
| 865 return earg; | |
| 866 args.data[i] = cast(void*)earg; | |
| 867 } | |
| 868 e = eval_builtin(b, args); | |
| 869 if (!e) | |
| 870 e = EXP_CANT_INTERPRET; | |
| 871 } | |
| 872 else | |
| 873 ///} | |
| 874 // Inline .dup | |
| 875 if (fd.ident == Id.adDup && arguments && arguments.dim == 2) | |
| 876 { | |
| 877 e = cast(Expression)arguments.data[1]; | |
| 878 e = e.interpret(istate); | |
| 879 if (e !is EXP_CANT_INTERPRET) | |
| 880 { | |
| 881 e = expType(type, e); | |
| 882 } | |
| 883 } | |
| 884 else | |
| 885 { | |
| 886 Expression eresult = fd.interpret(istate, arguments); | |
| 887 if (eresult) | |
| 888 e = eresult; | |
| 889 else if (fd.type.toBasetype().nextOf().ty == Tvoid && !global.errors) | |
| 890 e = EXP_VOID_INTERPRET; | |
| 891 else | |
| 892 error("cannot evaluate %s at compile time", toChars()); | |
| 893 } | |
| 894 } | |
| 895 } | |
| 63 | 896 return e; |
| 0 | 897 } |
| 898 | |
| 72 | 899 override bool checkSideEffect(int flag) |
| 0 | 900 { |
| 72 | 901 version (DMDV2) { |
| 902 if (flag != 2) | |
| 903 return true; | |
| 904 | |
| 905 if (e1.checkSideEffect(2)) | |
| 906 return true; | |
| 907 | |
| 908 /* If any of the arguments have side effects, this expression does | |
| 909 */ | |
| 910 for (size_t i = 0; i < arguments.dim; i++) | |
| 911 { | |
| 912 Expression e = cast(Expression)arguments.data[i]; | |
| 913 | |
| 914 if (e.checkSideEffect(2)) | |
| 915 return true; | |
| 916 } | |
| 917 | |
| 918 /* If calling a function or delegate that is typed as pure, | |
| 919 * then this expression has no side effects. | |
| 920 */ | |
| 921 Type t = e1.type.toBasetype(); | |
| 922 if (t.ty == TY.Tfunction && (cast(TypeFunction)t).ispure) | |
| 923 return false; | |
| 924 if (t.ty == TY.Tdelegate && (cast(TypeFunction)(cast(TypeDelegate)t).next).ispure) | |
| 925 return false; | |
| 926 } | |
| 0 | 927 return true; |
| 928 } | |
| 929 | |
| 72 | 930 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 931 { |
| 72 | 932 int i; |
| 933 expToCBuffer(buf, hgs, e1, precedence[op]); | |
| 934 buf.writeByte('('); | |
| 935 argsToCBuffer(buf, arguments, hgs); | |
| 0 | 936 buf.writeByte(')'); |
| 937 } | |
| 938 | |
| 72 | 939 override void dump(int indent) |
| 0 | 940 { |
| 941 assert(false); | |
| 942 } | |
| 943 | |
| 72 | 944 override elem* toElem(IRState* irs) |
| 0 | 945 { |
| 72 | 946 //printf("CallExp::toElem('%s')\n", toChars()); |
| 947 assert(e1.type); | |
| 948 elem* ec; | |
| 949 int directcall; | |
| 950 FuncDeclaration fd; | |
| 951 Type t1 = e1.type.toBasetype(); | |
| 952 Type ectype = t1; | |
| 953 | |
| 954 elem* ehidden = irs.ehidden; | |
| 955 irs.ehidden = null; | |
| 956 | |
| 957 directcall = 0; | |
| 958 fd = null; | |
| 959 if (e1.op == TOK.TOKdotvar && t1.ty != TY.Tdelegate) | |
| 960 { | |
| 961 DotVarExp dve = cast(DotVarExp)e1; | |
| 962 | |
| 963 fd = dve.var.isFuncDeclaration(); | |
| 964 Expression ex = dve.e1; | |
| 965 while (1) | |
| 966 { | |
| 967 switch (ex.op) | |
| 968 { | |
| 969 case TOK.TOKsuper: // super.member() calls directly | |
| 970 case TOK.TOKdottype: // type.member() calls directly | |
| 971 directcall = 1; | |
| 972 break; | |
| 973 | |
| 974 case TOK.TOKcast: | |
| 975 ex = (cast(CastExp)ex).e1; | |
| 976 continue; | |
| 977 | |
| 978 default: | |
| 979 //ex.dump(0); | |
| 980 break; | |
| 981 } | |
| 982 break; | |
| 983 } | |
| 984 ec = dve.e1.toElem(irs); | |
| 985 ectype = dve.e1.type.toBasetype(); | |
| 986 } | |
| 987 else if (e1.op == TOK.TOKvar) | |
| 988 { | |
| 989 fd = (cast(VarExp)e1).var.isFuncDeclaration(); | |
| 990 | |
| 991 if (fd && fd.ident == Id.alloca && !fd.fbody && fd.linkage == LINK.LINKc && arguments && arguments.dim == 1) | |
| 992 { | |
| 993 Expression arg = cast(Expression)arguments.data[0]; | |
| 994 arg = arg.optimize(WANT.WANTvalue); | |
| 995 if (arg.isConst() && arg.type.isintegral()) | |
| 996 { | |
| 997 long sz = arg.toInteger(); | |
| 998 if (sz > 0 && sz < 0x40000) | |
| 999 { | |
| 1000 // It's an alloca(sz) of a fixed amount. | |
| 1001 // Replace with an array allocated on the stack | |
| 1002 // of the same size: char[sz] tmp; | |
| 1003 | |
| 1004 Symbol* stmp; | |
| 1005 .type* t; | |
| 1006 | |
| 1007 assert(!ehidden); | |
| 1008 t = type_allocn(TYM.TYarray, tschar); | |
| 1009 t.Tdim = cast(uint)sz; | |
| 1010 stmp = symbol_genauto(t); | |
| 1011 ec = el_ptr(stmp); | |
| 1012 el_setLoc(ec,loc); | |
| 1013 return ec; | |
| 1014 } | |
| 1015 } | |
| 1016 } | |
| 1017 | |
| 1018 ec = e1.toElem(irs); | |
| 1019 } | |
| 1020 else | |
| 1021 { | |
| 1022 ec = e1.toElem(irs); | |
| 1023 } | |
| 1024 ec = callfunc(loc, irs, directcall, type, ec, ectype, fd, t1, ehidden, arguments); | |
| 1025 el_setLoc(ec,loc); | |
| 0 | 1026 return ec; |
| 1027 } | |
| 1028 | |
| 72 | 1029 override void scanForNestedRef(Scope sc) |
| 0 | 1030 { |
| 72 | 1031 //printf("CallExp.scanForNestedRef(Scope *sc): %s\n", toChars()); |
| 1032 e1.scanForNestedRef(sc); | |
| 64 | 1033 arrayExpressionScanForNestedRef(sc, arguments); |
| 72 | 1034 } |
| 0 | 1035 |
| 1036 version (DMDV2) { | |
| 72 | 1037 override int isLvalue() |
| 0 | 1038 { |
| 72 | 1039 // if (type.toBasetype().ty == Tstruct) |
| 1040 // return 1; | |
| 1041 Type tb = e1.type.toBasetype(); | |
| 1042 if (tb.ty == Tfunction && (cast(TypeFunction)tb).isref) | |
| 1043 return 1; // function returns a reference | |
| 0 | 1044 return 0; |
| 1045 } | |
| 1046 } | |
| 72 | 1047 override Expression toLvalue(Scope sc, Expression e) |
| 0 | 1048 { |
| 72 | 1049 if (isLvalue()) |
| 1050 return this; | |
| 0 | 1051 return Expression.toLvalue(sc, e); |
| 72 | 1052 } |
| 0 | 1053 |
| 1054 version (DMDV2) { | |
| 72 | 1055 override bool canThrow() |
| 0 | 1056 { |
| 72 | 1057 //printf("CallExp::canThrow() %s\n", toChars()); |
| 1058 if (e1.canThrow()) | |
| 1059 return true; | |
| 1060 | |
| 1061 /* If any of the arguments can throw, then this expression can throw | |
| 1062 */ | |
| 1063 for (size_t i = 0; i < arguments.dim; i++) | |
| 1064 { | |
| 1065 Expression e = cast(Expression)arguments.data[i]; | |
| 1066 | |
| 1067 if (e && e.canThrow()) | |
| 1068 return true; | |
| 1069 } | |
| 1070 | |
| 1071 if (global.errors && !e1.type) | |
| 1072 return false; // error recovery | |
| 1073 | |
| 1074 /* If calling a function or delegate that is typed as nothrow, | |
| 1075 * then this expression cannot throw. | |
| 1076 * Note that pure functions can throw. | |
| 1077 */ | |
| 1078 Type t = e1.type.toBasetype(); | |
| 1079 if (t.ty == TY.Tfunction && (cast(TypeFunction)t).isnothrow) | |
| 1080 return false; | |
| 1081 if (t.ty == TY.Tdelegate && (cast(TypeFunction)(cast(TypeDelegate)t).next).isnothrow) | |
| 1082 return false; | |
| 1083 | |
| 0 | 1084 return true; |
| 1085 } | |
| 1086 } | |
| 72 | 1087 override int inlineCost(InlineCostState* ics) |
| 0 | 1088 { |
| 1089 return 1 + e1.inlineCost(ics) + arrayInlineCost(ics, arguments); | |
| 1090 } | |
| 1091 | |
| 72 | 1092 override Expression doInline(InlineDoState ids) |
| 0 | 1093 { |
| 72 | 1094 CallExp ce = cast(CallExp)copy(); |
| 1095 ce.e1 = e1.doInline(ids); | |
| 1096 ce.arguments = arrayExpressiondoInline(arguments, ids); | |
| 0 | 1097 return ce; |
| 1098 } | |
| 1099 | |
| 72 | 1100 override Expression inlineScan(InlineScanState* iss) |
| 0 | 1101 { |
| 72 | 1102 Expression e = this; |
| 1103 | |
| 1104 //printf("CallExp.inlineScan()\n"); | |
| 1105 e1 = e1.inlineScan(iss); | |
| 1106 arrayInlineScan(iss, arguments); | |
| 1107 | |
| 1108 if (e1.op == TOKvar) | |
| 1109 { | |
| 1110 VarExp ve = cast(VarExp)e1; | |
| 1111 FuncDeclaration fd = ve.var.isFuncDeclaration(); | |
| 1112 | |
| 1113 if (fd && fd != iss.fd && fd.canInline(0)) | |
| 1114 { | |
| 1115 e = fd.doInline(iss, null, arguments); | |
| 1116 } | |
| 1117 } | |
| 1118 else if (e1.op == TOKdotvar) | |
| 1119 { | |
| 1120 DotVarExp dve = cast(DotVarExp)e1; | |
| 1121 FuncDeclaration fd = dve.var.isFuncDeclaration(); | |
| 1122 | |
| 1123 if (fd && fd != iss.fd && fd.canInline(1)) | |
| 1124 { | |
| 1125 if (dve.e1.op == TOKcall && | |
| 1126 dve.e1.type.toBasetype().ty == Tstruct) | |
| 1127 { | |
| 1128 /* To create ethis, we'll need to take the address | |
| 1129 * of dve.e1, but this won't work if dve.e1 is | |
| 1130 * a function call. | |
| 1131 */ | |
| 1132 ; | |
| 1133 } | |
| 1134 else | |
| 1135 e = fd.doInline(iss, dve.e1, arguments); | |
| 1136 } | |
| 1137 } | |
| 1138 | |
| 0 | 1139 return e; |
| 1140 } | |
| 1141 } | |
| 1142 |