Mercurial > projects > ddmd
annotate dmd/TypeFunction.d @ 123:9e39c7de8438
Make dmd test suite compile
| author | korDen |
|---|---|
| date | Fri, 03 Sep 2010 20:46:58 +0400 |
| parents | e28b18c23469 |
| children | 1765f3ef917d |
| rev | line source |
|---|---|
| 0 | 1 module dmd.TypeFunction; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.TypeNext; |
| 5 import dmd.TypeSArray; | |
| 6 import dmd.TypeArray; | |
| 123 | 7 import dmd.TemplateTupleParameter; |
| 0 | 8 import dmd.ArrayTypes; |
| 9 import dmd.LINK; | |
| 10 import dmd.StructDeclaration; | |
| 11 import dmd.TypeStruct; | |
| 12 import dmd.Global; | |
| 13 import dmd.STC; | |
| 14 import dmd.MOD; | |
| 73 | 15 import dmd.PROT; |
| 123 | 16 import dmd.TypeIdentifier; |
| 17 import dmd.TemplateParameter; | |
| 18 import dmd.Tuple; | |
| 0 | 19 import dmd.Type; |
| 20 import dmd.Loc; | |
| 21 import dmd.Scope; | |
| 22 import dmd.Identifier; | |
| 23 import dmd.OutBuffer; | |
| 24 import dmd.HdrGenState; | |
| 25 import dmd.CppMangleState; | |
| 26 import dmd.TypeInfoDeclaration; | |
| 27 import dmd.MATCH; | |
| 28 import dmd.Argument; | |
| 29 import dmd.Expression; | |
| 30 import dmd.RET; | |
| 31 import dmd.TY; | |
| 32 import dmd.Util; | |
| 123 | 33 import dmd.TemplateInstance : isTuple; |
| 0 | 34 |
| 35 import dmd.backend.TYPE; | |
| 36 import dmd.backend.PARAM; | |
| 37 import dmd.backend.Util; | |
| 38 import dmd.backend.TYM; | |
| 39 import dmd.backend.TF; | |
| 40 import dmd.backend.mTY; | |
| 41 | |
| 42 import core.stdc.stdlib; | |
| 43 import core.stdc.string; | |
| 44 | |
| 45 class TypeFunction : TypeNext | |
| 46 { | |
| 47 // .next is the return type | |
| 48 | |
| 49 Arguments parameters; // function parameters | |
| 50 int varargs; // 1: T t, ...) style for variable number of arguments | |
| 51 // 2: T t ...) style for variable number of arguments | |
| 52 bool isnothrow; // true: nothrow | |
| 53 bool ispure; // true: pure | |
| 54 bool isproperty; // can be called without parentheses | |
| 55 bool isref; // true: returns a reference | |
| 56 LINK linkage; // calling convention | |
| 57 | |
| 58 int inuse; | |
| 59 | |
| 60 this(Arguments parameters, Type treturn, int varargs, LINK linkage) | |
| 61 { | |
| 62 super(TY.Tfunction, treturn); | |
| 63 | |
| 64 //if (!treturn) *(char*)0=0; | |
| 65 // assert(treturn); | |
| 66 assert(0 <= varargs && varargs <= 2); | |
| 67 this.parameters = parameters; | |
| 68 this.varargs = varargs; | |
| 69 this.linkage = linkage; | |
| 70 } | |
| 71 | |
| 72 | 72 override Type syntaxCopy() |
| 0 | 73 { |
| 74 Type treturn = next ? next.syntaxCopy() : null; | |
| 75 Arguments params = Argument.arraySyntaxCopy(parameters); | |
| 76 TypeFunction t = new TypeFunction(params, treturn, varargs, linkage); | |
| 77 t.mod = mod; | |
| 78 t.isnothrow = isnothrow; | |
| 79 t.ispure = ispure; | |
| 80 t.isproperty = isproperty; | |
| 81 t.isref = isref; | |
| 82 | |
| 83 return t; | |
| 84 } | |
| 85 | |
| 86 version (DumbClone) { | |
| 87 } else { | |
| 88 final TypeFunction cloneTo(TypeFunction t) | |
| 89 { | |
| 90 super.cloneTo(t); | |
| 91 | |
| 92 // these 3 should be set by ctor | |
| 93 assert(t.parameters is null); | |
| 94 assert(t.varargs == varargs); | |
| 95 assert(t.linkage == linkage); | |
| 96 | |
| 97 t.isnothrow = isnothrow; | |
| 98 t.ispure = ispure; | |
| 99 t.isproperty = isproperty; | |
| 100 t.isref = isref; | |
| 101 t.inuse = inuse; | |
| 102 | |
| 103 if (parameters) | |
| 104 { | |
| 105 t.parameters = parameters.copy(); | |
| 106 for (size_t i = 0; i < parameters.dim; i++) | |
| 107 { | |
| 108 Argument arg = cast(Argument)parameters.data[i]; | |
| 109 Argument cpy = arg.clone(); | |
| 110 t.parameters.data[i] = cast(void*)cpy; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 return t; | |
| 115 } | |
| 116 | |
| 117 TypeFunction clone() | |
| 118 { | |
| 119 assert(this.classinfo == TypeFunction.classinfo); | |
| 120 return cloneTo(new TypeFunction(null, next, varargs, linkage)); | |
| 121 } | |
| 122 } | |
| 72 | 123 override Type semantic(Loc loc, Scope sc) |
| 0 | 124 { |
| 125 if (deco) // if semantic() already run | |
| 126 { | |
| 127 //printf("already done\n"); | |
| 128 return this; | |
| 129 } | |
| 130 //printf("TypeFunction.semantic() this = %p\n", this); | |
| 131 //printf("TypeFunction.semantic() %s, sc.stc = %x\n", toChars(), sc.stc); | |
| 132 | |
| 133 /* Copy in order to not mess up original. | |
| 134 * This can produce redundant copies if inferring return type, | |
| 135 * as semantic() will get called again on this. | |
| 136 */ | |
| 137 | |
| 138 TypeFunction tf = cast(TypeFunction)clone(); | |
| 139 | |
| 140 if (sc.stc & STC.STCpure) | |
| 141 tf.ispure = true; | |
| 142 if (sc.stc & STC.STCnothrow) | |
| 143 tf.isnothrow = true; | |
| 144 if (sc.stc & STC.STCref) | |
| 145 tf.isref = true; | |
| 146 | |
| 147 tf.linkage = sc.linkage; | |
| 148 if (tf.next) | |
| 149 { | |
| 150 tf.next = tf.next.semantic(loc,sc); | |
| 96 | 151 version(SARRAYVALUE) {} else |
| 152 { | |
| 0 | 153 if (tf.next.toBasetype().ty == TY.Tsarray) |
| 154 { error(loc, "functions cannot return static array %s", tf.next.toChars()); | |
| 155 tf.next = Type.terror; | |
| 156 } | |
| 96 | 157 } |
| 0 | 158 if (tf.next.toBasetype().ty == TY.Tfunction) |
| 159 { error(loc, "functions cannot return a function"); | |
| 160 tf.next = Type.terror; | |
| 161 } | |
| 162 if (tf.next.toBasetype().ty == TY.Ttuple) | |
| 163 { error(loc, "functions cannot return a tuple"); | |
| 164 tf.next = Type.terror; | |
| 165 } | |
| 166 if (tf.next.isauto() && !(sc.flags & SCOPE.SCOPEctor)) | |
| 167 error(loc, "functions cannot return scope %s", tf.next.toChars()); | |
| 168 } | |
| 169 | |
| 170 if (tf.parameters) | |
| 73 | 171 { |
| 172 /* Create a scope for evaluating the default arguments for the parameters | |
| 173 */ | |
| 174 Scope argsc = sc.push(); | |
| 175 argsc.stc = STCundefined; // don't inherit storage class | |
| 176 argsc.protection = PROT.PROTpublic; | |
| 177 | |
| 178 size_t dim = Argument.dim(tf.parameters); | |
| 0 | 179 |
| 180 for (size_t i = 0; i < dim; i++) | |
| 181 { Argument arg = Argument.getNth(tf.parameters, i); | |
| 182 | |
| 183 tf.inuse++; | |
| 73 | 184 arg.type = arg.type.semantic(loc, argsc); |
| 0 | 185 if (tf.inuse == 1) tf.inuse--; |
| 186 | |
| 187 arg.type = arg.type.addStorageClass(arg.storageClass); | |
| 188 | |
| 189 if (arg.storageClass & (STC.STCauto | STC.STCalias | STC.STCstatic)) | |
| 190 { | |
| 191 if (!arg.type) | |
| 192 continue; | |
| 193 } | |
| 194 | |
| 195 Type t = arg.type.toBasetype(); | |
| 196 | |
| 197 if (arg.storageClass & (STC.STCout | STC.STCref | STC.STClazy)) | |
| 198 { | |
| 96 | 199 //if (t.ty == TY.Tsarray) |
| 200 //error(loc, "cannot have out or ref parameter of type %s", t.toChars()); | |
| 201 if (arg.storageClass & STC.STCout && arg.type.mod & (STCconst | STCimmutable)) | |
| 202 error(loc, "cannot have const or immutabl out parameter of type %s", t.toChars()); | |
| 0 | 203 } |
| 204 if (!(arg.storageClass & STC.STClazy) && t.ty == TY.Tvoid) | |
| 205 error(loc, "cannot have parameter of type %s", arg.type.toChars()); | |
| 206 | |
| 207 if (arg.defaultArg) | |
| 208 { | |
| 73 | 209 arg.defaultArg = arg.defaultArg.semantic(argsc); |
| 210 arg.defaultArg = resolveProperties(argsc, arg.defaultArg); | |
| 211 arg.defaultArg = arg.defaultArg.implicitCastTo(argsc, arg.type); | |
| 0 | 212 } |
| 213 | |
| 214 /* If arg turns out to be a tuple, the number of parameters may | |
| 215 * change. | |
| 216 */ | |
| 217 if (t.ty == TY.Ttuple) | |
| 218 { dim = Argument.dim(tf.parameters); | |
| 219 i--; | |
| 220 } | |
| 221 } | |
| 73 | 222 argsc.pop(); |
| 0 | 223 } |
| 224 if (tf.next) | |
| 225 tf.deco = tf.merge().deco; | |
| 226 | |
| 227 if (tf.inuse) | |
| 228 { error(loc, "recursive type"); | |
| 229 tf.inuse = 0; | |
| 230 return terror; | |
| 231 } | |
| 232 | |
| 233 if (tf.varargs == 1 && tf.linkage != LINK.LINKd && Argument.dim(tf.parameters) == 0) | |
| 234 error(loc, "variadic functions with non-D linkage must have at least one parameter"); | |
| 235 | |
| 236 /* Don't return merge(), because arg identifiers and default args | |
| 237 * can be different | |
| 238 * even though the types match | |
| 239 */ | |
| 240 return tf; | |
| 241 } | |
| 242 | |
| 72 | 243 override void toDecoBuffer(OutBuffer buf, int flag) |
| 0 | 244 { |
| 245 ubyte mc; | |
| 246 | |
| 247 //printf("TypeFunction.toDecoBuffer() this = %p %s\n", this, toChars()); | |
| 248 //static int nest; if (++nest == 50) *(char*)0=0; | |
| 249 if (inuse) | |
| 250 { | |
| 251 inuse = 2; // flag error to caller | |
| 252 return; | |
| 253 } | |
| 254 inuse++; | |
| 255 static if (true) { | |
| 256 if (mod & MOD.MODshared) | |
| 257 buf.writeByte('O'); | |
| 258 if (mod & MOD.MODconst) | |
| 259 buf.writeByte('x'); | |
| 260 else if (mod & MOD.MODinvariant) | |
| 261 buf.writeByte('y'); | |
| 262 } | |
| 263 switch (linkage) | |
| 264 { | |
| 265 case LINK.LINKd: mc = 'F'; break; | |
| 266 case LINK.LINKc: mc = 'U'; break; | |
| 267 case LINK.LINKwindows: mc = 'W'; break; | |
| 268 case LINK.LINKpascal: mc = 'V'; break; | |
| 269 case LINK.LINKcpp: mc = 'R'; break; | |
| 270 } | |
| 271 buf.writeByte(mc); | |
| 272 if (ispure || isnothrow || isproperty || isref) | |
| 273 { | |
| 274 if (ispure) | |
| 275 buf.writestring("Na"); | |
| 276 if (isnothrow) | |
| 277 buf.writestring("Nb"); | |
| 278 if (isref) | |
| 279 buf.writestring("Nc"); | |
| 280 if (isproperty) | |
| 281 buf.writestring("Nd"); | |
| 282 } | |
| 283 // Write argument types | |
| 284 Argument.argsToDecoBuffer(buf, parameters); | |
| 285 //if (buf.data[buf.offset - 1] == '@') halt(); | |
| 286 buf.writeByte('Z' - varargs); // mark end of arg list | |
| 79 | 287 assert(next); |
| 0 | 288 next.toDecoBuffer(buf); |
| 289 inuse--; | |
| 290 } | |
| 291 | |
| 72 | 292 override void toCBuffer(OutBuffer buf, Identifier ident, HdrGenState* hgs) |
| 0 | 293 { |
| 294 //printf("TypeFunction.toCBuffer() this = %p\n", this); | |
| 295 string p = null; | |
| 296 | |
| 297 if (inuse) | |
| 298 { | |
| 299 inuse = 2; // flag error to caller | |
| 300 return; | |
| 301 } | |
| 302 inuse++; | |
| 303 | |
| 304 /* Use 'storage class' style for attributes | |
| 305 */ | |
| 306 if (mod & MODconst) | |
| 307 buf.writestring("const "); | |
| 308 if (mod & MODinvariant) | |
| 309 buf.writestring("immutable "); | |
| 310 if (mod & MODshared) | |
| 311 buf.writestring("shared "); | |
| 312 | |
| 313 if (ispure) | |
| 314 buf.writestring("pure "); | |
| 315 if (isnothrow) | |
| 316 buf.writestring("nothrow "); | |
| 317 if (isproperty) | |
| 318 buf.writestring("@property "); | |
| 319 if (isref) | |
| 320 buf.writestring("ref "); | |
| 321 | |
| 322 if (next && (!ident || ident.toHChars2() == ident.toChars())) | |
| 323 next.toCBuffer2(buf, hgs, MODundefined); | |
| 324 if (hgs.ddoc != 1) | |
| 325 { | |
| 326 switch (linkage) | |
| 327 { | |
| 328 case LINKd: p = null; break; | |
| 73 | 329 case LINKc: p = " C"; break; |
| 330 case LINKwindows: p = " Windows"; break; | |
| 331 case LINKpascal: p = " Pascal"; break; | |
| 332 case LINKcpp: p = " C++"; break; | |
| 0 | 333 default: |
| 334 assert(0); | |
| 335 } | |
| 336 } | |
| 337 | |
| 338 if (!hgs.hdrgen && p) | |
| 339 buf.writestring(p); | |
| 340 if (ident) | |
| 341 { | |
| 342 buf.writeByte(' '); | |
| 343 buf.writestring(ident.toHChars2()); | |
| 344 } | |
| 345 Argument.argsToCBuffer(buf, hgs, parameters, varargs); | |
| 346 inuse--; | |
| 347 } | |
| 348 | |
| 72 | 349 override void toCBuffer2(OutBuffer buf, HdrGenState* hgs, MOD mod) |
| 0 | 350 { |
| 351 //printf("TypeFunction::toCBuffer2() this = %p, ref = %d\n", this, isref); | |
| 352 string p; | |
| 353 | |
| 354 if (inuse) | |
| 355 { | |
| 356 inuse = 2; // flag error to caller | |
| 357 return; | |
| 358 } | |
| 359 | |
| 360 inuse++; | |
| 361 if (next) | |
| 362 next.toCBuffer2(buf, hgs, MODundefined); | |
| 363 | |
| 364 if (hgs.ddoc != 1) | |
| 365 { | |
| 366 switch (linkage) | |
| 367 { | |
| 368 case LINKd: p = null; break; | |
| 369 case LINKc: p = "C "; break; | |
| 370 case LINKwindows: p = "Windows "; break; | |
| 371 case LINKpascal: p = "Pascal "; break; | |
| 372 case LINKcpp: p = "C++ "; break; | |
| 373 default: assert(0); | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 if (!hgs.hdrgen && p) | |
| 378 buf.writestring(p); | |
| 379 buf.writestring(" function"); | |
| 380 Argument.argsToCBuffer(buf, hgs, parameters, varargs); | |
| 381 | |
| 382 /* Use postfix style for attributes | |
| 383 */ | |
| 384 if (mod != this.mod) | |
| 385 { | |
| 386 modToBuffer(buf); | |
| 387 } | |
| 388 | |
| 389 if (ispure) | |
| 390 buf.writestring(" pure"); | |
| 391 if (isnothrow) | |
| 392 buf.writestring(" nothrow"); | |
| 393 if (isproperty) | |
| 394 buf.writestring(" @property"); | |
| 395 if (isref) | |
| 396 buf.writestring(" ref"); | |
| 397 | |
| 398 inuse--; | |
| 399 } | |
| 400 | |
| 72 | 401 override MATCH deduceType(Scope sc, Type tparam, TemplateParameters parameters, Objects dedtypes) |
| 0 | 402 { |
| 123 | 403 //printf("TypeFunction.deduceType()\n"); |
| 404 //printf("\tthis = %d, ", ty); print(); | |
| 405 //printf("\ttparam = %d, ", tparam.ty); tparam.print(); | |
| 406 | |
| 407 // Extra check that function characteristics must match | |
| 408 if (tparam && tparam.ty == Tfunction) | |
| 409 { | |
| 410 TypeFunction tp = cast(TypeFunction)tparam; | |
| 411 if (varargs != tp.varargs || | |
| 412 linkage != tp.linkage) | |
| 413 return MATCHnomatch; | |
| 414 | |
| 415 size_t nfargs = Argument.dim(this.parameters); | |
| 416 size_t nfparams = Argument.dim(tp.parameters); | |
| 417 | |
| 418 /* See if tuple match | |
| 419 */ | |
| 420 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 421 { | |
| 422 /* See if 'A' of the template parameter matches 'A' | |
| 423 * of the type of the last function parameter. | |
| 424 */ | |
| 425 Argument fparam = Argument.getNth(tp.parameters, nfparams - 1); | |
| 426 assert(fparam); | |
| 427 assert(fparam.type); | |
| 428 if (fparam.type.ty != Tident) | |
| 429 goto L1; | |
| 430 TypeIdentifier tid = cast(TypeIdentifier)fparam.type; | |
| 431 if (tid.idents.dim) | |
| 432 goto L1; | |
| 433 | |
| 434 /* Look through parameters to find tuple matching tid.ident | |
| 435 */ | |
| 436 size_t tupi = 0; | |
| 437 for (; 1; tupi++) | |
| 438 { | |
| 439 if (tupi == parameters.dim) | |
| 440 goto L1; | |
| 441 TemplateParameter t = parameters[tupi]; | |
| 442 TemplateTupleParameter tup = t.isTemplateTupleParameter(); | |
| 443 if (tup && tup.ident.equals(tid.ident)) | |
| 444 break; | |
| 445 } | |
| 446 | |
| 447 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 448 * now form the tuple argument. | |
| 449 */ | |
| 450 int tuple_dim = nfargs - (nfparams - 1); | |
| 451 | |
| 452 /* See if existing tuple, and whether it matches or not | |
| 453 */ | |
| 454 Object o = dedtypes[tupi]; | |
| 455 if (o) | |
| 456 { | |
| 457 // Existing deduced argument must be a tuple, and must match | |
| 458 Tuple t = isTuple(o); | |
| 459 if (!t || t.objects.dim != tuple_dim) | |
| 460 return MATCHnomatch; | |
| 461 for (size_t i = 0; i < tuple_dim; i++) | |
| 462 { | |
| 463 Argument arg = Argument.getNth(this.parameters, nfparams - 1 + i); | |
| 464 if (!arg.type.equals(t.objects[i])) | |
| 465 return MATCHnomatch; | |
| 466 } | |
| 467 } | |
| 468 else | |
| 469 { // Create new tuple | |
| 470 Tuple t = new Tuple(); | |
| 471 t.objects.setDim(tuple_dim); | |
| 472 for (size_t i = 0; i < tuple_dim; i++) | |
| 473 { | |
| 474 Argument arg = Argument.getNth(this.parameters, nfparams - 1 + i); | |
| 475 t.objects[i] = arg.type; | |
| 476 } | |
| 477 dedtypes[tupi] = t; | |
| 478 } | |
| 479 nfparams--; // don't consider the last parameter for type deduction | |
| 480 goto L2; | |
| 481 } | |
| 482 | |
| 483 L1: | |
| 484 if (nfargs != nfparams) | |
| 485 return MATCHnomatch; | |
| 486 L2: | |
| 487 for (size_t i = 0; i < nfparams; i++) | |
| 488 { | |
| 489 Argument a = Argument.getNth(this.parameters, i); | |
| 490 Argument ap = Argument.getNth(tp.parameters, i); | |
| 491 if (a.storageClass != ap.storageClass || | |
| 492 !a.type.deduceType(sc, ap.type, parameters, dedtypes)) | |
| 493 return MATCHnomatch; | |
| 494 } | |
| 495 } | |
| 496 return Type.deduceType(sc, tparam, parameters, dedtypes); | |
| 0 | 497 } |
| 498 | |
| 72 | 499 override TypeInfoDeclaration getTypeInfoDeclaration() |
| 0 | 500 { |
| 501 assert(false); | |
| 502 } | |
| 503 | |
| 72 | 504 override Type reliesOnTident() |
| 0 | 505 { |
| 506 if (parameters) | |
| 507 { | |
| 508 for (size_t i = 0; i < parameters.dim; i++) | |
| 509 { | |
| 510 Argument arg = cast(Argument)parameters.data[i]; | |
| 511 Type t = arg.type.reliesOnTident(); | |
| 512 if (t) | |
| 513 return t; | |
| 514 } | |
| 515 } | |
| 516 return next.reliesOnTident(); | |
| 517 } | |
| 518 | |
| 519 version (CPP_MANGLE) { | |
| 520 void toCppMangle(OutBuffer buf, CppMangleState* cms) | |
| 521 { | |
| 522 assert(false); | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 /*************************** | |
| 527 * Examine function signature for parameter p and see if | |
| 528 * p can 'escape' the scope of the function. | |
| 529 */ | |
| 530 bool parameterEscapes(Argument p) | |
| 531 { | |
| 532 /* Scope parameters do not escape. | |
| 533 * Allow 'lazy' to imply 'scope' - | |
| 534 * lazy parameters can be passed along | |
| 535 * as lazy parameters to the next function, but that isn't | |
| 536 * escaping. | |
| 537 */ | |
| 538 if (p.storageClass & (STC.STCscope | STC.STClazy)) | |
| 539 return false; | |
| 540 | |
| 541 if (ispure) | |
| 542 { /* With pure functions, we need only be concerned if p escapes | |
| 543 * via any return statement. | |
| 544 */ | |
| 545 Type tret = nextOf().toBasetype(); | |
| 546 if (!isref && !tret.hasPointers()) | |
| 547 { /* The result has no references, so p could not be escaping | |
| 548 * that way. | |
| 549 */ | |
| 550 return false; | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 /* Assume it escapes in the absence of better information. | |
| 555 */ | |
| 556 return true; | |
| 557 } | |
| 558 | |
| 559 /******************************** | |
| 560 * 'args' are being matched to function 'this' | |
| 561 * Determine match level. | |
| 562 * Returns: | |
| 563 * MATCHxxxx | |
| 564 */ | |
| 565 MATCH callMatch(Expression ethis, Expressions args) | |
| 566 { | |
| 567 //printf("TypeFunction.callMatch() %s\n", toChars()); | |
| 568 MATCH match = MATCH.MATCHexact; // assume exact match | |
| 569 | |
| 570 if (ethis) | |
| 571 { | |
| 572 Type t = ethis.type; | |
| 573 if (t.toBasetype().ty == TY.Tpointer) | |
| 574 t = t.toBasetype().nextOf(); // change struct* to struct | |
| 575 | |
| 576 if (t.mod != mod) | |
| 577 { | |
| 578 if (mod == MOD.MODconst) | |
| 579 match = MATCH.MATCHconst; | |
| 580 else | |
| 581 return MATCH.MATCHnomatch; | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 size_t nparams = Argument.dim(parameters); | |
| 586 size_t nargs = args ? args.dim : 0; | |
| 587 if (nparams == nargs) { | |
| 588 ; | |
| 589 } else if (nargs > nparams) | |
| 590 { | |
| 591 if (varargs == 0) | |
| 592 goto Nomatch; // too many args; no match | |
| 593 match = MATCH.MATCHconvert; // match ... with a "conversion" match level | |
| 594 } | |
| 595 | |
| 596 for (size_t u = 0; u < nparams; u++) | |
| 597 { | |
| 598 MATCH m; | |
| 599 Expression arg; | |
| 600 | |
| 601 // BUG: what about out and ref? | |
| 602 | |
| 603 Argument p = Argument.getNth(parameters, u); | |
| 604 assert(p); | |
| 605 if (u >= nargs) | |
| 606 { | |
| 607 if (p.defaultArg) | |
| 608 continue; | |
| 609 if (varargs == 2 && u + 1 == nparams) | |
| 610 goto L1; | |
| 611 goto Nomatch; // not enough arguments | |
| 612 } | |
| 613 | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
96
diff
changeset
|
614 arg = cast(Expression)args[u]; |
| 0 | 615 assert(arg); |
| 96 | 616 // writef("arg: %s, type: %s\n", arg.toChars(), arg.type.toChars()); |
| 617 | |
| 0 | 618 |
| 619 // Non-lvalues do not match ref or out parameters | |
| 96 | 620 if (p.storageClass & (STC.STCref | STC.STCout)) |
| 621 { | |
| 622 if (!arg.isLvalue()) | |
| 623 goto Nomatch; | |
| 624 } | |
| 625 | |
| 626 if (p.storageClass & STCref) | |
| 627 { | |
| 628 /* Don't allow static arrays to be passed to mutable refereces | |
| 629 * to static arrays if the argument cannot be modified. | |
| 630 */ | |
| 631 Type targb = arg.type.toBasetype(); | |
| 632 Type tparb = p.type.toBasetype(); | |
| 633 //writef("%s\n", targb.toChars()); | |
| 634 //writef("%s\n", tparb.toChars()); | |
| 635 if (targb.nextOf() && tparb.ty == Tsarray && | |
| 636 targb.nextOf().mod != tparb.nextOf().mod && | |
| 637 !tparb.nextOf().isConst()) | |
| 638 goto Nomatch; | |
| 639 } | |
| 0 | 640 |
| 641 if (p.storageClass & STC.STClazy && p.type.ty == TY.Tvoid && arg.type.ty != TY.Tvoid) | |
| 642 m = MATCH.MATCHconvert; | |
| 643 else | |
| 644 m = arg.implicitConvTo(p.type); | |
| 645 //printf("\tm = %d\n", m); | |
| 646 if (m == MATCH.MATCHnomatch) // if no match | |
| 647 { | |
| 648 L1: | |
| 649 if (varargs == 2 && u + 1 == nparams) // if last varargs param | |
| 650 { | |
| 651 Type tb = p.type.toBasetype(); | |
| 652 TypeSArray tsa; | |
| 653 long sz; | |
| 654 | |
| 655 switch (tb.ty) | |
| 656 { | |
| 657 case TY.Tsarray: | |
| 658 tsa = cast(TypeSArray)tb; | |
| 659 sz = tsa.dim.toInteger(); | |
| 660 if (sz != nargs - u) | |
| 661 goto Nomatch; | |
| 662 case TY.Tarray: | |
| 663 { | |
| 664 TypeArray ta = cast(TypeArray)tb; | |
| 665 for (; u < nargs; u++) | |
| 666 { | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
96
diff
changeset
|
667 arg = cast(Expression)args[u]; |
| 0 | 668 assert(arg); |
| 669 static if (true) { | |
| 670 /* If lazy array of delegates, | |
| 671 * convert arg(s) to delegate(s) | |
| 672 */ | |
| 673 Type tret = p.isLazyArray(); | |
| 674 if (tret) | |
| 675 { | |
| 676 if (ta.next.equals(arg.type)) | |
| 677 { | |
| 678 m = MATCH.MATCHexact; | |
| 679 } | |
| 680 else | |
| 681 { | |
| 682 m = arg.implicitConvTo(tret); | |
| 683 if (m == MATCH.MATCHnomatch) | |
| 684 { | |
| 685 if (tret.toBasetype().ty == TY.Tvoid) | |
| 686 m = MATCH.MATCHconvert; | |
| 687 } | |
| 688 } | |
| 689 } | |
| 690 else | |
| 691 m = arg.implicitConvTo(ta.next); | |
| 692 } else { | |
| 693 m = arg.implicitConvTo(ta.next); | |
| 694 } | |
| 695 if (m == MATCH.MATCHnomatch) | |
| 696 goto Nomatch; | |
| 697 | |
| 698 if (m < match) | |
| 699 match = m; | |
| 700 } | |
| 701 goto Ldone; | |
| 702 } | |
| 703 | |
| 704 case TY.Tclass: | |
| 705 // Should see if there's a constructor match? | |
| 706 // Or just leave it ambiguous? | |
| 707 goto Ldone; | |
| 708 | |
| 709 default: | |
| 710 goto Nomatch; | |
| 711 } | |
| 712 } | |
| 713 | |
| 714 goto Nomatch; | |
| 715 } | |
| 716 | |
| 717 if (m < match) | |
| 718 match = m; // pick worst match | |
| 719 } | |
| 720 | |
| 721 Ldone: | |
| 722 //printf("match = %d\n", match); | |
| 723 return match; | |
| 724 | |
| 725 Nomatch: | |
| 726 //printf("no match\n"); | |
| 727 return MATCH.MATCHnomatch; | |
| 728 } | |
| 729 | |
| 96 | 730 override type* toCtype() |
| 0 | 731 { |
| 732 if (ctype) { | |
| 733 return ctype; | |
| 734 } | |
| 735 | |
| 736 type* t; | |
| 737 if (true) | |
| 738 { | |
| 739 param_t* paramtypes; | |
| 740 tym_t tyf; | |
| 741 type* tp; | |
| 742 | |
| 743 paramtypes = null; | |
| 744 size_t nparams = Argument.dim(parameters); | |
| 745 for (size_t i = 0; i < nparams; i++) | |
| 746 { | |
| 747 Argument arg = Argument.getNth(parameters, i); | |
| 748 tp = arg.type.toCtype(); | |
| 749 if (arg.storageClass & (STC.STCout | STC.STCref)) | |
| 750 { | |
| 751 // C doesn't have reference types, so it's really a pointer | |
| 752 // to the parameter type | |
| 753 tp = type_allocn(TYM.TYref, tp); | |
| 754 } | |
| 755 param_append_type(¶mtypes,tp); | |
| 756 } | |
| 757 tyf = totym(); | |
| 758 t = type_alloc(tyf); | |
| 759 t.Tflags |= TF.TFprototype; | |
| 760 if (varargs != 1) | |
| 761 t.Tflags |= TF.TFfixed; | |
| 762 ctype = t; | |
| 763 t.Tnext = next.toCtype(); | |
| 764 t.Tnext.Tcount++; | |
| 765 t.Tparamtypes = paramtypes; | |
| 766 } | |
| 767 ctype = t; | |
| 768 return t; | |
| 769 } | |
| 770 | |
| 771 /*************************** | |
| 772 * Determine return style of function - whether in registers or | |
| 773 * through a hidden pointer to the caller's stack. | |
| 774 */ | |
| 96 | 775 RET retStyle() |
| 0 | 776 { |
| 777 //printf("TypeFunction.retStyle() %s\n", toChars()); | |
| 95 | 778 version (DMDV2) |
| 779 { | |
| 0 | 780 if (isref) |
| 781 return RET.RETregs; // returns a pointer | |
| 782 } | |
| 783 | |
| 784 Type tn = next.toBasetype(); | |
| 95 | 785 Type tns = tn; |
| 786 ulong sz = tn.size(); | |
| 0 | 787 |
| 95 | 788 version(SARRAYVALUE) |
| 789 { | |
| 790 if (tn.ty == Tsarray) | |
| 791 { | |
| 792 do | |
| 793 { | |
| 794 tns = tns.nextOf().toBasetype(); | |
| 795 } while (tns.ty == Tsarray); | |
| 796 if (tns.ty != Tstruct) | |
| 797 { | |
| 798 if (global.params.isLinux && linkage != LINKd) | |
| 799 {} | |
| 800 else | |
| 801 { | |
| 802 switch (sz) | |
| 803 { case 1: | |
| 804 case 2: | |
| 805 case 4: | |
| 806 case 8: | |
| 96 | 807 return RET.RETregs; // return small structs in regs |
| 808 // (not 3 byte structs!) | |
| 95 | 809 default: |
| 810 break; | |
| 811 } | |
| 812 } | |
| 96 | 813 return RET.RETstack; |
| 95 | 814 } |
| 815 } | |
| 816 } | |
| 817 if (tns.ty == TY.Tstruct) | |
| 0 | 818 { |
| 819 StructDeclaration sd = (cast(TypeStruct)tn).sym; | |
| 820 if (global.params.isLinux && linkage != LINK.LINKd) { | |
| 821 ; | |
| 822 } | |
| 95 | 823 ///version (DMDV2) { // TODO: |
| 824 else if (sd.dtor || sd.cpctor) | |
| 825 { | |
| 0 | 826 } |
| 827 ///} | |
| 828 else | |
| 829 { | |
| 95 | 830 switch (sz) |
| 0 | 831 { |
| 832 case 1: | |
| 833 case 2: | |
| 834 case 4: | |
| 835 case 8: | |
| 836 return RET.RETregs; // return small structs in regs | |
| 837 // (not 3 byte structs!) | |
| 838 default: | |
| 839 break; | |
| 840 } | |
| 841 } | |
| 842 return RET.RETstack; | |
| 843 } | |
| 844 else if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) && | |
| 845 linkage == LINK.LINKc && | |
| 846 tn.iscomplex()) | |
| 847 { | |
| 848 if (tn.ty == TY.Tcomplex32) | |
| 849 return RET.RETregs; // in EDX:EAX, not ST1:ST0 | |
| 850 else | |
| 851 return RET.RETstack; | |
| 852 } | |
| 853 else | |
| 854 return RET.RETregs; | |
| 855 } | |
| 856 | |
| 72 | 857 override TYM totym() |
| 0 | 858 { |
| 859 TYM tyf; | |
| 860 | |
| 861 //printf("TypeFunction.totym(), linkage = %d\n", linkage); | |
| 862 switch (linkage) | |
| 863 { | |
| 864 case LINK.LINKwindows: | |
| 865 tyf = (varargs == 1) ? TYM.TYnfunc : TYM.TYnsfunc; | |
| 866 break; | |
| 867 | |
| 868 case LINK.LINKpascal: | |
| 869 tyf = (varargs == 1) ? TYM.TYnfunc : TYM.TYnpfunc; | |
| 870 break; | |
| 871 | |
| 872 case LINK.LINKc: | |
| 873 tyf = TYM.TYnfunc; | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
874 version (POSIX) {///TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS |
| 0 | 875 if (retStyle() == RET.RETstack) |
| 876 tyf = TYM.TYhfunc; | |
| 877 } | |
| 878 break; | |
| 879 | |
| 880 case LINK.LINKd: | |
| 881 tyf = (varargs == 1) ? TYM.TYnfunc : TYM.TYjfunc; | |
| 882 break; | |
| 883 | |
| 884 case LINK.LINKcpp: | |
| 885 tyf = TYM.TYnfunc; | |
| 886 break; | |
| 887 | |
| 888 default: | |
| 889 writef("linkage = %d\n", linkage); | |
| 890 assert(0); | |
| 891 } | |
| 892 version (DMDV2) { | |
| 893 if (isnothrow) | |
| 894 tyf |= mTY.mTYnothrow; | |
| 895 } | |
| 896 return tyf; | |
| 897 } | |
|
22
fd4acc376c45
Implemented object file output and linking on linux.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
898 } |