Mercurial > projects > ldc
annotate dmd/template.c @ 876:27a379f288bf
Merged DMD 1.039
| author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
|---|---|
| date | Wed, 07 Jan 2009 19:34:48 +0100 |
| parents | 330f999ade44 |
| children | 39519a1ff603 |
| rev | line source |
|---|---|
| 336 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2008 by Digital Mars | |
| 4 // All Rights Reserved | |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 // Handle template implementation | |
| 12 | |
| 13 #include <stdio.h> | |
| 14 #include <assert.h> | |
| 15 | |
| 16 #if !IN_LLVM | |
| 17 #if _WIN32 | |
| 18 #include <windows.h> | |
| 19 long __cdecl __ehfilter(LPEXCEPTION_POINTERS ep); | |
| 20 #endif | |
| 21 #endif | |
| 22 | |
| 23 #include "root.h" | |
| 24 #include "mem.h" | |
| 25 #include "stringtable.h" | |
| 26 #include "mars.h" | |
| 27 #include "identifier.h" | |
| 28 #include "mtype.h" | |
| 29 #include "template.h" | |
| 30 #include "init.h" | |
| 31 #include "expression.h" | |
| 32 #include "scope.h" | |
| 33 #include "module.h" | |
| 34 #include "aggregate.h" | |
| 35 #include "declaration.h" | |
| 36 #include "dsymbol.h" | |
| 37 #include "hdrgen.h" | |
| 38 | |
| 39 #define LOG 0 | |
| 40 | |
| 41 /******************************************** | |
| 42 * These functions substitute for dynamic_cast. dynamic_cast does not work | |
| 43 * on earlier versions of gcc. | |
| 44 */ | |
| 45 | |
| 46 Expression *isExpression(Object *o) | |
| 47 { | |
| 48 //return dynamic_cast<Expression *>(o); | |
| 49 if (!o || o->dyncast() != DYNCAST_EXPRESSION) | |
| 50 return NULL; | |
| 51 return (Expression *)o; | |
| 52 } | |
| 53 | |
| 54 Dsymbol *isDsymbol(Object *o) | |
| 55 { | |
| 56 //return dynamic_cast<Dsymbol *>(o); | |
| 57 if (!o || o->dyncast() != DYNCAST_DSYMBOL) | |
| 58 return NULL; | |
| 59 return (Dsymbol *)o; | |
| 60 } | |
| 61 | |
| 62 Type *isType(Object *o) | |
| 63 { | |
| 64 //return dynamic_cast<Type *>(o); | |
| 65 if (!o || o->dyncast() != DYNCAST_TYPE) | |
| 66 return NULL; | |
| 67 return (Type *)o; | |
| 68 } | |
| 69 | |
| 70 Tuple *isTuple(Object *o) | |
| 71 { | |
| 72 //return dynamic_cast<Tuple *>(o); | |
| 73 if (!o || o->dyncast() != DYNCAST_TUPLE) | |
| 74 return NULL; | |
| 75 return (Tuple *)o; | |
| 76 } | |
| 77 | |
| 78 | |
| 79 /*********************** | |
| 80 * Try to get arg as a type. | |
| 81 */ | |
| 82 | |
| 83 Type *getType(Object *o) | |
| 84 { | |
| 85 Type *t = isType(o); | |
| 86 if (!t) | |
| 87 { Expression *e = isExpression(o); | |
| 88 if (e) | |
| 89 t = e->type; | |
| 90 } | |
| 91 return t; | |
| 92 } | |
| 93 | |
| 94 Dsymbol *getDsymbol(Object *oarg) | |
| 95 { | |
| 96 Dsymbol *sa; | |
| 97 Expression *ea = isExpression(oarg); | |
| 98 if (ea) | |
| 99 { // Try to convert Expression to symbol | |
| 100 if (ea->op == TOKvar) | |
| 101 sa = ((VarExp *)ea)->var; | |
| 102 else if (ea->op == TOKfunction) | |
| 103 sa = ((FuncExp *)ea)->fd; | |
| 104 else | |
| 105 sa = NULL; | |
| 106 } | |
| 107 else | |
| 108 { // Try to convert Type to symbol | |
| 109 Type *ta = isType(oarg); | |
| 110 if (ta) | |
| 111 sa = ta->toDsymbol(NULL); | |
| 112 else | |
| 113 sa = isDsymbol(oarg); // if already a symbol | |
| 114 } | |
| 115 return sa; | |
| 116 } | |
| 117 | |
| 118 /****************************** | |
| 119 * If o1 matches o2, return 1. | |
| 120 * Else, return 0. | |
| 121 */ | |
| 122 | |
| 123 int match(Object *o1, Object *o2, TemplateDeclaration *tempdecl, Scope *sc) | |
| 124 { | |
| 125 Type *t1 = isType(o1); | |
| 126 Type *t2 = isType(o2); | |
| 127 Expression *e1 = isExpression(o1); | |
| 128 Expression *e2 = isExpression(o2); | |
| 129 Dsymbol *s1 = isDsymbol(o1); | |
| 130 Dsymbol *s2 = isDsymbol(o2); | |
| 131 Tuple *v1 = isTuple(o1); | |
| 132 Tuple *v2 = isTuple(o2); | |
| 133 | |
| 134 //printf("\t match t1 %p t2 %p, e1 %p e2 %p, s1 %p s2 %p, v1 %p v2 %p\n", t1,t2,e1,e2,s1,s2,v1,v2); | |
| 135 | |
| 136 /* A proper implementation of the various equals() overrides | |
| 137 * should make it possible to just do o1->equals(o2), but | |
| 138 * we'll do that another day. | |
| 139 */ | |
| 140 | |
| 141 if (t1) | |
| 142 { | |
| 143 /* if t1 is an instance of ti, then give error | |
| 144 * about recursive expansions. | |
| 145 */ | |
| 146 Dsymbol *s = t1->toDsymbol(sc); | |
| 147 if (s && s->parent) | |
| 148 { TemplateInstance *ti1 = s->parent->isTemplateInstance(); | |
| 149 if (ti1 && ti1->tempdecl == tempdecl) | |
| 150 { | |
| 151 for (Scope *sc1 = sc; sc1; sc1 = sc1->enclosing) | |
| 152 { | |
| 153 if (sc1->scopesym == ti1) | |
| 154 { | |
| 155 error("recursive template expansion for template argument %s", t1->toChars()); | |
| 156 return 1; // fake a match | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 if (!t2 || !t1->equals(t2)) | |
| 163 goto Lnomatch; | |
| 164 } | |
| 165 else if (e1) | |
| 166 { | |
| 167 #if 0 | |
| 168 if (e1 && e2) | |
| 169 { | |
| 170 printf("match %d\n", e1->equals(e2)); | |
| 171 e1->print(); | |
| 172 e2->print(); | |
| 173 e1->type->print(); | |
| 174 e2->type->print(); | |
| 175 } | |
| 176 #endif | |
| 177 if (!e2) | |
| 178 goto Lnomatch; | |
| 179 if (!e1->equals(e2)) | |
| 180 goto Lnomatch; | |
| 181 } | |
| 182 else if (s1) | |
| 183 { | |
| 184 //printf("%p %s, %p %s\n", s1, s1->toChars(), s2, s2->toChars()); | |
| 185 if (!s2 || !s1->equals(s2) || s1->parent != s2->parent) | |
| 186 { | |
| 187 goto Lnomatch; | |
| 188 } | |
| 189 } | |
| 190 else if (v1) | |
| 191 { | |
| 192 if (!v2) | |
| 193 goto Lnomatch; | |
| 194 if (v1->objects.dim != v2->objects.dim) | |
| 195 goto Lnomatch; | |
| 196 for (size_t i = 0; i < v1->objects.dim; i++) | |
| 197 { | |
| 198 if (!match((Object *)v1->objects.data[i], | |
| 199 (Object *)v2->objects.data[i], | |
| 200 tempdecl, sc)) | |
| 201 goto Lnomatch; | |
| 202 } | |
| 203 } | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
204 //printf("match\n"); |
| 336 | 205 return 1; // match |
| 206 Lnomatch: | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
207 //printf("nomatch\n"); |
| 336 | 208 return 0; // nomatch; |
| 209 } | |
| 210 | |
| 211 /**************************************** | |
| 212 */ | |
| 213 | |
| 214 void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg) | |
| 215 { | |
| 216 //printf("ObjectToCBuffer()\n"); | |
| 217 Type *t = isType(oarg); | |
| 218 Expression *e = isExpression(oarg); | |
| 219 Dsymbol *s = isDsymbol(oarg); | |
| 220 Tuple *v = isTuple(oarg); | |
| 221 if (t) | |
| 222 { //printf("\tt: %s ty = %d\n", t->toChars(), t->ty); | |
| 223 t->toCBuffer(buf, NULL, hgs); | |
| 224 } | |
| 225 else if (e) | |
| 226 e->toCBuffer(buf, hgs); | |
| 227 else if (s) | |
| 228 { | |
| 229 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 230 buf->writestring(p); | |
| 231 } | |
| 232 else if (v) | |
| 233 { | |
| 234 Objects *args = &v->objects; | |
| 235 for (size_t i = 0; i < args->dim; i++) | |
| 236 { | |
| 237 if (i) | |
| 238 buf->writeByte(','); | |
| 239 Object *o = (Object *)args->data[i]; | |
| 240 ObjectToCBuffer(buf, hgs, o); | |
| 241 } | |
| 242 } | |
| 243 else if (!oarg) | |
| 244 { | |
| 245 buf->writestring("NULL"); | |
| 246 } | |
| 247 else | |
| 248 { | |
| 249 #ifdef DEBUG | |
| 250 printf("bad Object = %p\n", oarg); | |
| 251 #endif | |
| 252 assert(0); | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 | |
| 257 | |
| 258 /* ======================== TemplateDeclaration ============================= */ | |
| 259 | |
| 260 TemplateDeclaration::TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters, Array *decldefs) | |
| 261 : ScopeDsymbol(id) | |
| 262 { | |
| 263 #if LOG | |
| 264 printf("TemplateDeclaration(this = %p, id = '%s')\n", this, id->toChars()); | |
| 265 #endif | |
| 266 #if 0 | |
| 267 if (parameters) | |
| 268 for (int i = 0; i < parameters->dim; i++) | |
| 269 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 270 //printf("\tparameter[%d] = %p\n", i, tp); | |
| 271 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 272 | |
| 273 if (ttp) | |
| 274 { | |
| 275 printf("\tparameter[%d] = %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 276 } | |
| 277 } | |
| 278 #endif | |
| 279 this->loc = loc; | |
| 280 this->parameters = parameters; | |
| 281 this->origParameters = parameters; | |
| 282 this->members = decldefs; | |
| 283 this->overnext = NULL; | |
| 284 this->overroot = NULL; | |
| 285 this->scope = NULL; | |
| 286 this->onemember = NULL; | |
| 287 } | |
| 288 | |
| 289 Dsymbol *TemplateDeclaration::syntaxCopy(Dsymbol *) | |
| 290 { | |
| 291 //printf("TemplateDeclaration::syntaxCopy()\n"); | |
| 292 TemplateDeclaration *td; | |
| 293 TemplateParameters *p; | |
| 294 Array *d; | |
| 295 | |
| 296 p = NULL; | |
| 297 if (parameters) | |
| 298 { | |
| 299 p = new TemplateParameters(); | |
| 300 p->setDim(parameters->dim); | |
| 301 for (int i = 0; i < p->dim; i++) | |
| 302 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 303 p->data[i] = (void *)tp->syntaxCopy(); | |
| 304 } | |
| 305 } | |
| 306 d = Dsymbol::arraySyntaxCopy(members); | |
| 307 td = new TemplateDeclaration(loc, ident, p, d); | |
|
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308 |
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Some missed LLVMDC -> LDC.
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309 // LDC |
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Added support for overloaded intrinsics.
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310 td->intrinsicName = intrinsicName; |
|
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Added support for overloaded intrinsics.
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diff
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311 |
| 336 | 312 return td; |
| 313 } | |
| 314 | |
| 315 void TemplateDeclaration::semantic(Scope *sc) | |
| 316 { | |
| 317 #if LOG | |
| 318 printf("TemplateDeclaration::semantic(this = %p, id = '%s')\n", this, ident->toChars()); | |
| 319 #endif | |
| 320 if (scope) | |
| 321 return; // semantic() already run | |
| 322 | |
| 323 if (sc->func) | |
| 324 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
325 #if DMDV1 |
| 336 | 326 error("cannot declare template at function scope %s", sc->func->toChars()); |
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875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
327 #endif |
| 336 | 328 } |
| 329 | |
| 330 if (/*global.params.useArrayBounds &&*/ sc->module) | |
| 331 { | |
| 332 // Generate this function as it may be used | |
| 333 // when template is instantiated in other modules | |
| 334 sc->module->toModuleArray(); | |
| 335 } | |
| 336 | |
| 337 if (/*global.params.useAssert &&*/ sc->module) | |
| 338 { | |
| 339 // Generate this function as it may be used | |
| 340 // when template is instantiated in other modules | |
| 341 sc->module->toModuleAssert(); | |
| 342 } | |
| 343 | |
| 344 /* Remember Scope for later instantiations, but make | |
| 345 * a copy since attributes can change. | |
| 346 */ | |
| 347 this->scope = new Scope(*sc); | |
| 348 this->scope->setNoFree(); | |
| 349 | |
| 350 // Set up scope for parameters | |
| 351 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 352 paramsym->parent = sc->parent; | |
| 353 Scope *paramscope = sc->push(paramsym); | |
| 354 paramscope->parameterSpecialization = 1; | |
| 355 | |
| 356 if (global.params.doDocComments) | |
| 357 { | |
| 358 origParameters = new TemplateParameters(); | |
| 359 origParameters->setDim(parameters->dim); | |
| 360 for (int i = 0; i < parameters->dim; i++) | |
| 361 { | |
| 362 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 363 origParameters->data[i] = (void *)tp->syntaxCopy(); | |
| 364 } | |
| 365 } | |
| 366 | |
| 367 for (int i = 0; i < parameters->dim; i++) | |
| 368 { | |
| 369 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 370 | |
| 371 tp->declareParameter(paramscope); | |
| 372 } | |
| 373 | |
| 374 for (int i = 0; i < parameters->dim; i++) | |
| 375 { | |
| 376 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 377 | |
| 378 tp->semantic(paramscope); | |
| 379 if (i + 1 != parameters->dim && tp->isTemplateTupleParameter()) | |
| 380 error("template tuple parameter must be last one"); | |
| 381 } | |
| 382 | |
| 383 paramscope->pop(); | |
| 384 | |
| 385 if (members) | |
| 386 { | |
| 387 Dsymbol *s; | |
| 388 if (Dsymbol::oneMembers(members, &s)) | |
| 389 { | |
| 390 if (s && s->ident && s->ident->equals(ident)) | |
| 391 { | |
| 392 onemember = s; | |
| 393 s->parent = this; | |
| 394 } | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 /* BUG: should check: | |
| 399 * o no virtual functions or non-static data members of classes | |
| 400 */ | |
| 401 } | |
| 402 | |
| 403 const char *TemplateDeclaration::kind() | |
| 404 { | |
| 405 return (onemember && onemember->isAggregateDeclaration()) | |
| 406 ? onemember->kind() | |
| 407 : (char *)"template"; | |
| 408 } | |
| 409 | |
| 410 /********************************** | |
| 411 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 412 * Return !=0 if successful; i.e. no conflict. | |
| 413 */ | |
| 414 | |
| 415 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 416 { | |
| 417 TemplateDeclaration **pf; | |
| 418 TemplateDeclaration *f; | |
| 419 | |
| 420 #if LOG | |
| 421 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 422 #endif | |
| 423 f = s->isTemplateDeclaration(); | |
| 424 if (!f) | |
| 425 return FALSE; | |
| 426 TemplateDeclaration *pthis = this; | |
| 427 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 428 { | |
| 429 #if 0 | |
| 430 // Conflict if TemplateParameter's match | |
| 431 // Will get caught anyway later with TemplateInstance, but | |
| 432 // should check it now. | |
| 433 TemplateDeclaration *f2 = *pf; | |
| 434 | |
| 435 if (f->parameters->dim != f2->parameters->dim) | |
| 436 goto Lcontinue; | |
| 437 | |
| 438 for (int i = 0; i < f->parameters->dim; i++) | |
| 439 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 440 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 441 | |
| 442 if (!p1->overloadMatch(p2)) | |
| 443 goto Lcontinue; | |
| 444 } | |
| 445 | |
| 446 #if LOG | |
| 447 printf("\tfalse: conflict\n"); | |
| 448 #endif | |
| 449 return FALSE; | |
| 450 | |
| 451 Lcontinue: | |
| 452 ; | |
| 453 #endif | |
| 454 } | |
| 455 | |
| 456 f->overroot = this; | |
| 457 *pf = f; | |
| 458 #if LOG | |
| 459 printf("\ttrue: no conflict\n"); | |
| 460 #endif | |
| 461 return TRUE; | |
| 462 } | |
| 463 | |
| 464 /*************************************** | |
| 465 * Given that ti is an instance of this TemplateDeclaration, | |
| 466 * deduce the types of the parameters to this, and store | |
| 467 * those deduced types in dedtypes[]. | |
| 468 * Input: | |
| 469 * flag 1: don't do semantic() because of dummy types | |
| 470 * 2: don't change types in matchArg() | |
| 471 * Output: | |
| 472 * dedtypes deduced arguments | |
| 473 * Return match level. | |
| 474 */ | |
| 475 | |
| 476 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 477 Objects *dedtypes, int flag) | |
| 478 { MATCH m; | |
| 479 int dedtypes_dim = dedtypes->dim; | |
| 480 | |
| 481 #define LOGM 0 | |
| 482 #if LOGM | |
| 483 printf("\n+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); | |
| 484 #endif | |
| 485 | |
| 486 #if 0 | |
| 487 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 488 if (ti->tiargs->dim) | |
| 489 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 490 ti->tiargs->dim, | |
| 491 ti->tiargs->data[0]); | |
| 492 #endif | |
| 493 dedtypes->zero(); | |
| 494 | |
| 495 int parameters_dim = parameters->dim; | |
| 496 int variadic = isVariadic() != NULL; | |
| 497 | |
| 498 // If more arguments than parameters, no match | |
| 499 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 500 { | |
| 501 #if LOGM | |
| 502 printf(" no match: more arguments than parameters\n"); | |
| 503 #endif | |
| 504 return MATCHnomatch; | |
| 505 } | |
| 506 | |
| 507 assert(dedtypes_dim == parameters_dim); | |
| 508 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 509 | |
| 510 // Set up scope for parameters | |
| 511 assert((size_t)scope > 0x10000); | |
| 512 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 513 paramsym->parent = scope->parent; | |
| 514 Scope *paramscope = scope->push(paramsym); | |
| 515 | |
| 516 // Attempt type deduction | |
| 517 m = MATCHexact; | |
| 518 for (int i = 0; i < dedtypes_dim; i++) | |
| 519 { MATCH m2; | |
| 520 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 521 Declaration *sparam; | |
| 522 | |
| 523 //printf("\targument [%d]\n", i); | |
| 524 #if LOGM | |
| 525 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); | |
| 526 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 527 if (ttp) | |
| 528 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 529 #endif | |
| 530 | |
| 531 #if DMDV1 | |
| 532 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 533 #else | |
| 534 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam, (flag & 2) ? 1 : 0); | |
| 535 | |
| 536 #endif | |
| 537 //printf("\tm2 = %d\n", m2); | |
| 538 | |
| 539 if (m2 == MATCHnomatch) | |
| 540 { | |
| 541 #if 0 | |
| 542 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 543 #endif | |
| 544 goto Lnomatch; | |
| 545 } | |
| 546 | |
| 547 if (m2 < m) | |
| 548 m = m2; | |
| 549 | |
| 550 if (!flag) | |
| 551 sparam->semantic(paramscope); | |
| 552 if (!paramscope->insert(sparam)) | |
| 553 goto Lnomatch; | |
| 554 } | |
| 555 | |
| 556 if (!flag) | |
| 557 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
558 /* Any parameter left without a type gets the type of |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
559 * its corresponding arg |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
560 */ |
| 336 | 561 for (int i = 0; i < dedtypes_dim; i++) |
| 562 { | |
| 563 if (!dedtypes->data[i]) | |
| 564 { assert(i < ti->tiargs->dim); | |
| 565 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 566 } | |
| 567 } | |
| 568 } | |
| 569 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
570 #if DMDV2 |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
571 if (m && constraint && !(flag & 1)) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
572 { /* Check to see if constraint is satisfied. |
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573 */ |
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574 Expression *e = constraint->syntaxCopy(); |
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575 paramscope->flags |= SCOPEstaticif; |
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576 e = e->semantic(paramscope); |
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577 e = e->optimize(WANTvalue | WANTinterpret); |
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578 if (e->isBool(TRUE)) |
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579 ; |
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580 else if (e->isBool(FALSE)) |
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581 goto Lnomatch; |
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582 else |
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583 { |
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584 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
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585 } |
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586 } |
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587 #endif |
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588 |
| 336 | 589 #if LOGM |
| 590 // Print out the results | |
| 591 printf("--------------------------\n"); | |
| 592 printf("template %s\n", toChars()); | |
| 593 printf("instance %s\n", ti->toChars()); | |
| 594 if (m) | |
| 595 { | |
| 596 for (int i = 0; i < dedtypes_dim; i++) | |
| 597 { | |
| 598 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 599 Object *oarg; | |
| 600 | |
| 601 printf(" [%d]", i); | |
| 602 | |
| 603 if (i < ti->tiargs->dim) | |
| 604 oarg = (Object *)ti->tiargs->data[i]; | |
| 605 else | |
| 606 oarg = NULL; | |
| 607 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 608 } | |
| 609 } | |
| 610 else | |
| 611 goto Lnomatch; | |
| 612 #endif | |
| 613 | |
| 614 #if LOGM | |
| 615 printf(" match = %d\n", m); | |
| 616 #endif | |
| 617 goto Lret; | |
| 618 | |
| 619 Lnomatch: | |
| 620 #if LOGM | |
| 621 printf(" no match\n"); | |
| 622 #endif | |
| 623 m = MATCHnomatch; | |
| 624 | |
| 625 Lret: | |
| 626 paramscope->pop(); | |
| 627 #if LOGM | |
| 628 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); | |
| 629 #endif | |
| 630 return m; | |
| 631 } | |
| 632 | |
| 633 /******************************************** | |
| 634 * Determine partial specialization order of 'this' vs td2. | |
| 635 * Returns: | |
| 636 * 1 this is at least as specialized as td2 | |
| 637 * 0 td2 is more specialized than this | |
| 638 */ | |
| 639 | |
| 640 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 641 { | |
| 642 /* This works by taking the template parameters to this template | |
| 643 * declaration and feeding them to td2 as if it were a template | |
| 644 * instance. | |
| 645 * If it works, then this template is at least as specialized | |
| 646 * as td2. | |
| 647 */ | |
| 648 | |
| 649 TemplateInstance ti(0, ident); // create dummy template instance | |
| 650 Objects dedtypes; | |
| 651 | |
| 652 #define LOG_LEASTAS 0 | |
| 653 | |
| 654 #if LOG_LEASTAS | |
| 655 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 656 #endif | |
| 657 | |
| 658 // Set type arguments to dummy template instance to be types | |
| 659 // generated from the parameters to this template declaration | |
| 660 ti.tiargs = new Objects(); | |
| 661 ti.tiargs->setDim(parameters->dim); | |
| 662 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 663 { | |
| 664 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 665 | |
| 666 void *p = tp->dummyArg(); | |
| 667 if (p) | |
| 668 ti.tiargs->data[i] = p; | |
| 669 else | |
| 670 ti.tiargs->setDim(i); | |
| 671 } | |
| 672 | |
| 673 // Temporary Array to hold deduced types | |
| 674 //dedtypes.setDim(parameters->dim); | |
| 675 dedtypes.setDim(td2->parameters->dim); | |
| 676 | |
| 677 // Attempt a type deduction | |
| 678 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 679 { | |
| 680 /* A non-variadic template is more specialized than a | |
| 681 * variadic one. | |
| 682 */ | |
| 683 if (isVariadic() && !td2->isVariadic()) | |
| 684 goto L1; | |
| 685 | |
| 686 #if LOG_LEASTAS | |
| 687 printf(" matches, so is least as specialized\n"); | |
| 688 #endif | |
| 689 return 1; | |
| 690 } | |
| 691 L1: | |
| 692 #if LOG_LEASTAS | |
| 693 printf(" doesn't match, so is not as specialized\n"); | |
| 694 #endif | |
| 695 return 0; | |
| 696 } | |
| 697 | |
| 698 | |
| 699 /************************************************* | |
| 700 * Match function arguments against a specific template function. | |
| 701 * Input: | |
|
875
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702 * loc instantiation location |
| 336 | 703 * targsi Expression/Type initial list of template arguments |
|
875
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704 * ethis 'this' argument if !NULL |
| 336 | 705 * fargs arguments to function |
| 706 * Output: | |
| 707 * dedargs Expression/Type deduced template arguments | |
| 708 * Returns: | |
| 709 * match level | |
| 710 */ | |
| 711 | |
|
875
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712 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Loc loc, Objects *targsi, |
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713 Expression *ethis, Expressions *fargs, |
| 336 | 714 Objects *dedargs) |
| 715 { | |
| 716 size_t i; | |
| 717 size_t nfparams; | |
| 718 size_t nfargs; | |
| 719 size_t nargsi; // array size of targsi | |
| 720 int fptupindex = -1; | |
| 721 int tuple_dim = 0; | |
| 722 MATCH match = MATCHexact; | |
| 723 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 724 TypeFunction *fdtype; // type of fd | |
| 725 TemplateTupleParameter *tp; | |
| 726 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 727 | |
| 728 #if 0 | |
| 729 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); | |
| 730 for (i = 0; i < fargs->dim; i++) | |
| 731 { Expression *e = (Expression *)fargs->data[i]; | |
| 732 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 733 } | |
| 734 #endif | |
| 735 | |
| 736 assert((size_t)scope > 0x10000); | |
| 737 | |
| 738 dedargs->setDim(parameters->dim); | |
| 739 dedargs->zero(); | |
| 740 | |
| 741 dedtypes.setDim(parameters->dim); | |
| 742 dedtypes.zero(); | |
| 743 | |
| 744 // Set up scope for parameters | |
| 745 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 746 paramsym->parent = scope->parent; | |
| 747 Scope *paramscope = scope->push(paramsym); | |
| 748 | |
| 749 tp = isVariadic(); | |
| 750 | |
| 751 nargsi = 0; | |
| 752 if (targsi) | |
| 753 { // Set initial template arguments | |
| 754 | |
| 755 nargsi = targsi->dim; | |
| 756 if (nargsi > parameters->dim) | |
| 757 { if (!tp) | |
| 758 goto Lnomatch; | |
| 759 dedargs->setDim(nargsi); | |
| 760 dedargs->zero(); | |
| 761 } | |
| 762 | |
| 763 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 764 | |
| 765 for (i = 0; i < nargsi; i++) | |
| 766 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 767 MATCH m; | |
| 768 Declaration *sparam; | |
| 769 | |
| 770 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 771 //printf("\tdeduceType m = %d\n", m); | |
| 772 if (m == MATCHnomatch) | |
| 773 goto Lnomatch; | |
| 774 if (m < match) | |
| 775 match = m; | |
| 776 | |
| 777 sparam->semantic(paramscope); | |
| 778 if (!paramscope->insert(sparam)) | |
| 779 goto Lnomatch; | |
| 780 } | |
| 781 } | |
| 782 | |
| 783 assert(fd->type->ty == Tfunction); | |
| 784 fdtype = (TypeFunction *)fd->type; | |
| 785 | |
| 786 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 787 nfargs = fargs->dim; // number of function arguments | |
| 788 | |
| 789 /* Check for match of function arguments with variadic template | |
| 790 * parameter, such as: | |
| 791 * | |
| 792 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 793 * void main() { Foo(1,2,3); } | |
| 794 */ | |
| 795 tp = isVariadic(); | |
| 796 if (tp) // if variadic | |
| 797 { | |
| 798 if (nfparams == 0) // if no function parameters | |
| 799 { | |
| 800 Tuple *t = new Tuple(); | |
| 801 //printf("t = %p\n", t); | |
| 802 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 803 goto L2; | |
| 804 } | |
| 805 else if (nfargs < nfparams - 1) | |
| 806 goto L1; | |
| 807 else | |
| 808 { | |
| 809 /* Figure out which of the function parameters matches | |
| 810 * the tuple template parameter. Do this by matching | |
| 811 * type identifiers. | |
| 812 * Set the index of this function parameter to fptupindex. | |
| 813 */ | |
| 814 for (fptupindex = 0; fptupindex < nfparams; fptupindex++) | |
| 815 { | |
| 816 Argument *fparam = (Argument *)fdtype->parameters->data[fptupindex]; | |
| 817 if (fparam->type->ty != Tident) | |
| 818 continue; | |
| 819 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 820 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 821 continue; | |
| 822 | |
| 823 if (fdtype->varargs) // variadic function doesn't | |
| 824 goto Lnomatch; // go with variadic template | |
| 825 | |
| 826 /* The types of the function arguments | |
| 827 * now form the tuple argument. | |
| 828 */ | |
| 829 Tuple *t = new Tuple(); | |
| 830 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 831 | |
| 832 tuple_dim = nfargs - (nfparams - 1); | |
| 833 t->objects.setDim(tuple_dim); | |
| 834 for (i = 0; i < tuple_dim; i++) | |
| 835 { Expression *farg = (Expression *)fargs->data[fptupindex + i]; | |
| 836 t->objects.data[i] = (void *)farg->type; | |
| 837 } | |
| 838 goto L2; | |
| 839 } | |
| 840 fptupindex = -1; | |
| 841 } | |
| 842 } | |
| 843 | |
| 844 L1: | |
| 845 if (nfparams == nfargs) | |
| 846 ; | |
| 847 else if (nfargs > nfparams) | |
| 848 { | |
| 849 if (fdtype->varargs == 0) | |
| 850 goto Lnomatch; // too many args, no match | |
| 851 match = MATCHconvert; // match ... with a conversion | |
| 852 } | |
| 853 | |
| 854 L2: | |
|
875
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855 #if DMDV2 |
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856 // Match 'ethis' to any TemplateThisParameter's |
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857 if (ethis) |
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858 { |
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859 for (size_t i = 0; i < parameters->dim; i++) |
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860 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
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861 TemplateThisParameter *ttp = tp->isTemplateThisParameter(); |
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862 if (ttp) |
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863 { MATCH m; |
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864 |
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865 Type *t = new TypeIdentifier(0, ttp->ident); |
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866 m = ethis->type->deduceType(scope, t, parameters, &dedtypes); |
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867 if (!m) |
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868 goto Lnomatch; |
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869 if (m < match) |
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870 match = m; // pick worst match |
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871 } |
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872 } |
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873 } |
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874 #endif |
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|
875 |
| 336 | 876 // Loop through the function parameters |
| 877 for (i = 0; i < nfparams; i++) | |
| 878 { | |
| 879 /* Skip over function parameters which wound up | |
| 880 * as part of a template tuple parameter. | |
| 881 */ | |
| 882 if (i == fptupindex) | |
| 883 { if (fptupindex == nfparams - 1) | |
| 884 break; | |
| 885 i += tuple_dim - 1; | |
| 886 continue; | |
| 887 } | |
| 888 | |
| 889 Argument *fparam = Argument::getNth(fdtype->parameters, i); | |
| 890 | |
| 891 if (i >= nfargs) // if not enough arguments | |
| 892 { | |
| 893 if (fparam->defaultArg) | |
| 894 { /* Default arguments do not participate in template argument | |
| 895 * deduction. | |
| 896 */ | |
| 897 goto Lmatch; | |
| 898 } | |
| 899 } | |
| 900 else | |
| 901 { Expression *farg = (Expression *)fargs->data[i]; | |
| 902 #if 0 | |
| 903 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 904 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 905 #endif | |
| 906 | |
| 907 MATCH m; | |
| 908 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); | |
| 909 //printf("\tdeduceType m = %d\n", m); | |
| 910 | |
| 911 /* If no match, see if there's a conversion to a delegate | |
| 912 */ | |
| 913 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 914 { | |
| 915 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 916 TypeFunction *tf = (TypeFunction *)td->next; | |
| 917 | |
| 918 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 919 { | |
| 920 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); | |
| 921 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 922 m = MATCHconvert; | |
| 923 } | |
| 924 //printf("\tm2 = %d\n", m); | |
| 925 } | |
| 926 | |
| 927 if (m) | |
| 928 { if (m < match) | |
| 929 match = m; // pick worst match | |
| 930 continue; | |
| 931 } | |
| 932 } | |
| 933 | |
| 934 /* The following code for variadic arguments closely | |
| 935 * matches TypeFunction::callMatch() | |
| 936 */ | |
| 937 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 938 goto Lnomatch; | |
| 939 | |
| 940 /* Check for match with function parameter T... | |
| 941 */ | |
| 942 Type *tb = fparam->type->toBasetype(); | |
| 943 switch (tb->ty) | |
| 944 { | |
| 945 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 946 case Tsarray: | |
| 947 { TypeSArray *tsa = (TypeSArray *)tb; | |
| 948 integer_t sz = tsa->dim->toInteger(); | |
| 949 if (sz != nfargs - i) | |
| 950 goto Lnomatch; | |
| 951 } | |
| 952 case Tarray: | |
| 953 { TypeArray *ta = (TypeArray *)tb; | |
| 954 for (; i < nfargs; i++) | |
| 955 { | |
| 956 Expression *arg = (Expression *)fargs->data[i]; | |
| 957 assert(arg); | |
| 958 MATCH m; | |
| 959 /* If lazy array of delegates, | |
| 960 * convert arg(s) to delegate(s) | |
| 961 */ | |
| 962 Type *tret = fparam->isLazyArray(); | |
| 963 if (tret) | |
| 964 { | |
| 965 if (ta->next->equals(arg->type)) | |
| 966 { m = MATCHexact; | |
| 967 } | |
| 968 else | |
| 969 { | |
| 970 m = arg->implicitConvTo(tret); | |
| 971 if (m == MATCHnomatch) | |
| 972 { | |
| 973 if (tret->toBasetype()->ty == Tvoid) | |
| 974 m = MATCHconvert; | |
| 975 } | |
| 976 } | |
| 977 } | |
| 978 else | |
| 979 { | |
| 980 m = arg->type->deduceType(scope, ta->next, parameters, &dedtypes); | |
| 981 //m = arg->implicitConvTo(ta->next); | |
| 982 } | |
| 983 if (m == MATCHnomatch) | |
| 984 goto Lnomatch; | |
| 985 if (m < match) | |
| 986 match = m; | |
| 987 } | |
| 988 goto Lmatch; | |
| 989 } | |
| 990 case Tclass: | |
| 991 case Tident: | |
| 992 goto Lmatch; | |
| 993 | |
| 994 default: | |
| 995 goto Lnomatch; | |
| 996 } | |
| 997 } | |
| 998 | |
| 999 Lmatch: | |
| 1000 | |
| 1001 /* Fill in any missing arguments with their defaults. | |
| 1002 */ | |
| 1003 for (i = nargsi; i < dedargs->dim; i++) | |
| 1004 { | |
| 1005 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1006 //printf("tp[%d] = %s\n", i, tp->ident->toChars()); | |
| 1007 /* For T:T*, the dedargs is the T*, dedtypes is the T | |
| 1008 * But for function templates, we really need them to match | |
| 1009 */ | |
| 1010 Object *oarg = (Object *)dedargs->data[i]; | |
| 1011 Object *oded = (Object *)dedtypes.data[i]; | |
| 1012 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, oded); | |
| 1013 if (!oarg) | |
| 1014 { | |
| 1015 if (oded) | |
| 1016 { | |
| 1017 if (tp->specialization()) | |
| 1018 { /* The specialization can work as long as afterwards | |
| 1019 * the oded == oarg | |
| 1020 */ | |
| 1021 Declaration *sparam; | |
| 1022 dedargs->data[i] = (void *)oded; | |
| 1023 MATCH m2 = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 1024 //printf("m2 = %d\n", m2); | |
| 1025 if (!m2) | |
| 1026 goto Lnomatch; | |
| 1027 if (m2 < match) | |
| 1028 match = m2; // pick worst match | |
| 1029 if (dedtypes.data[i] != oded) | |
| 1030 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 1031 } | |
| 1032 } | |
| 1033 else | |
|
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|
1034 { oded = tp->defaultArg(loc, paramscope); |
| 336 | 1035 if (!oded) |
| 1036 goto Lnomatch; | |
| 1037 } | |
| 1038 declareParameter(paramscope, tp, oded); | |
| 1039 dedargs->data[i] = (void *)oded; | |
| 1040 } | |
| 1041 } | |
| 1042 | |
|
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1043 #if DMDV2 |
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1044 if (constraint) |
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1045 { /* Check to see if constraint is satisfied. |
|
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|
1046 */ |
|
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1047 Expression *e = constraint->syntaxCopy(); |
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1048 paramscope->flags |= SCOPEstaticif; |
|
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1049 e = e->semantic(paramscope); |
|
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1050 e = e->optimize(WANTvalue | WANTinterpret); |
|
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1051 if (e->isBool(TRUE)) |
|
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1052 ; |
|
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|
1053 else if (e->isBool(FALSE)) |
|
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1054 goto Lnomatch; |
|
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|
1055 else |
|
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|
1056 { |
|
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|
1057 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
|
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|
1058 } |
|
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|
1059 } |
|
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|
1060 #endif |
|
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|
1061 |
| 336 | 1062 #if 0 |
| 1063 for (i = 0; i < dedargs->dim; i++) | |
| 1064 { Type *t = (Type *)dedargs->data[i]; | |
| 1065 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 1066 } | |
| 1067 #endif | |
| 1068 | |
| 1069 paramscope->pop(); | |
| 1070 //printf("\tmatch %d\n", match); | |
| 1071 return match; | |
| 1072 | |
| 1073 Lnomatch: | |
| 1074 paramscope->pop(); | |
| 1075 //printf("\tnomatch\n"); | |
| 1076 return MATCHnomatch; | |
| 1077 } | |
| 1078 | |
| 1079 /************************************************** | |
| 1080 * Declare template parameter tp with value o. | |
| 1081 */ | |
| 1082 | |
| 1083 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 1084 { | |
| 1085 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 1086 | |
| 1087 Type *targ = isType(o); | |
| 1088 Expression *ea = isExpression(o); | |
| 1089 Dsymbol *sa = isDsymbol(o); | |
| 1090 Tuple *va = isTuple(o); | |
| 1091 | |
| 1092 Dsymbol *s; | |
| 1093 | |
| 1094 if (targ) | |
| 1095 { | |
| 1096 //printf("type %s\n", targ->toChars()); | |
| 1097 s = new AliasDeclaration(0, tp->ident, targ); | |
| 1098 } | |
| 1099 else if (sa) | |
| 1100 { | |
| 1101 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 1102 s = new AliasDeclaration(0, tp->ident, sa); | |
| 1103 } | |
| 1104 else if (ea) | |
| 1105 { | |
| 1106 // tdtypes.data[i] always matches ea here | |
| 1107 Initializer *init = new ExpInitializer(loc, ea); | |
| 1108 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1109 assert(tvp); | |
| 1110 | |
| 1111 VarDeclaration *v = new VarDeclaration(loc, tvp->valType, tp->ident, init); | |
| 1112 v->storage_class = STCconst; | |
| 1113 s = v; | |
| 1114 } | |
| 1115 else if (va) | |
| 1116 { | |
| 1117 //printf("\ttuple\n"); | |
| 1118 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 1119 } | |
| 1120 else | |
| 1121 { | |
| 1122 #ifdef DEBUG | |
| 1123 o->print(); | |
| 1124 #endif | |
| 1125 assert(0); | |
| 1126 } | |
| 1127 if (!sc->insert(s)) | |
| 1128 error("declaration %s is already defined", tp->ident->toChars()); | |
| 1129 s->semantic(sc); | |
| 1130 } | |
| 1131 | |
| 1132 /************************************** | |
| 1133 * Determine if TemplateDeclaration is variadic. | |
| 1134 */ | |
| 1135 | |
| 1136 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 1137 { size_t dim = parameters->dim; | |
| 1138 TemplateTupleParameter *tp = NULL; | |
| 1139 | |
| 1140 if (dim) | |
| 1141 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 1142 return tp; | |
| 1143 } | |
| 1144 | |
| 1145 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 1146 { | |
| 1147 return ::isVariadic(parameters); | |
| 1148 } | |
| 1149 | |
| 1150 /*********************************** | |
| 1151 * We can overload templates. | |
| 1152 */ | |
| 1153 | |
| 1154 int TemplateDeclaration::isOverloadable() | |
| 1155 { | |
| 1156 return 1; | |
| 1157 } | |
| 1158 | |
| 1159 /************************************************* | |
| 1160 * Given function arguments, figure out which template function | |
| 1161 * to expand, and return that function. | |
| 1162 * If no match, give error message and return NULL. | |
| 1163 * Input: | |
| 1164 * sc instantiation scope | |
| 1165 * loc instantiation location | |
| 1166 * targsi initial list of template arguments | |
|
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|
1167 * ethis if !NULL, the 'this' pointer argument |
| 336 | 1168 * fargs arguments to function |
|
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|
1169 * flags 1: do not issue error message on no match, just return NULL |
| 336 | 1170 */ |
| 1171 | |
| 1172 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, | |
|
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|
1173 Objects *targsi, Expression *ethis, Expressions *fargs, int flags) |
| 336 | 1174 { |
| 1175 MATCH m_best = MATCHnomatch; | |
| 1176 TemplateDeclaration *td_ambig = NULL; | |
| 1177 TemplateDeclaration *td_best = NULL; | |
| 1178 Objects *tdargs = new Objects(); | |
| 1179 TemplateInstance *ti; | |
| 1180 FuncDeclaration *fd; | |
| 1181 | |
| 1182 #if 0 | |
| 1183 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); | |
| 1184 printf(" targsi:\n"); | |
| 1185 if (targsi) | |
| 1186 { for (int i = 0; i < targsi->dim; i++) | |
| 1187 { Object *arg = (Object *)targsi->data[i]; | |
| 1188 printf("\t%s\n", arg->toChars()); | |
| 1189 } | |
| 1190 } | |
| 1191 printf(" fargs:\n"); | |
| 1192 for (int i = 0; i < fargs->dim; i++) | |
| 1193 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1194 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1195 //printf("\tty = %d\n", arg->type->ty); | |
| 1196 } | |
| 1197 #endif | |
| 1198 | |
| 1199 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1200 { | |
| 1201 if (!td->scope) | |
| 1202 { | |
| 1203 error("forward reference to template %s", td->toChars()); | |
| 1204 goto Lerror; | |
| 1205 } | |
| 1206 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1207 { | |
| 1208 error("is not a function template"); | |
| 1209 goto Lerror; | |
| 1210 } | |
| 1211 | |
| 1212 MATCH m; | |
| 1213 Objects dedargs; | |
| 1214 | |
|
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|
1215 m = td->deduceFunctionTemplateMatch(loc, targsi, ethis, fargs, &dedargs); |
| 336 | 1216 //printf("deduceFunctionTemplateMatch = %d\n", m); |
| 1217 if (!m) // if no match | |
| 1218 continue; | |
| 1219 | |
| 1220 if (m < m_best) | |
| 1221 goto Ltd_best; | |
| 1222 if (m > m_best) | |
| 1223 goto Ltd; | |
| 1224 | |
| 1225 { | |
| 1226 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1227 int c1 = td->leastAsSpecialized(td_best); | |
| 1228 int c2 = td_best->leastAsSpecialized(td); | |
| 1229 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1230 | |
| 1231 if (c1 > c2) | |
| 1232 goto Ltd; | |
| 1233 else if (c1 < c2) | |
| 1234 goto Ltd_best; | |
| 1235 else | |
| 1236 goto Lambig; | |
| 1237 } | |
| 1238 | |
| 1239 Lambig: // td_best and td are ambiguous | |
| 1240 td_ambig = td; | |
| 1241 continue; | |
| 1242 | |
| 1243 Ltd_best: // td_best is the best match so far | |
| 1244 td_ambig = NULL; | |
| 1245 continue; | |
| 1246 | |
| 1247 Ltd: // td is the new best match | |
| 1248 td_ambig = NULL; | |
| 1249 assert((size_t)td->scope > 0x10000); | |
| 1250 td_best = td; | |
| 1251 m_best = m; | |
| 1252 tdargs->setDim(dedargs.dim); | |
| 1253 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1254 continue; | |
| 1255 } | |
| 1256 if (!td_best) | |
| 1257 { | |
| 1258 error(loc, "does not match any template declaration"); | |
| 1259 goto Lerror; | |
| 1260 } | |
| 1261 if (td_ambig) | |
| 1262 { | |
| 1263 error(loc, "%s matches more than one function template declaration, %s and %s", | |
| 1264 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 1265 } | |
| 1266 | |
| 1267 /* The best match is td_best with arguments tdargs. | |
| 1268 * Now instantiate the template. | |
| 1269 */ | |
| 1270 assert((size_t)td_best->scope > 0x10000); | |
| 1271 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1272 ti->semantic(sc); | |
| 1273 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1274 if (!fd) | |
| 1275 goto Lerror; | |
| 1276 return fd; | |
| 1277 | |
| 1278 Lerror: | |
| 1279 { | |
|
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|
1280 HdrGenState hgs; |
|
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|
1281 |
|
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|
1282 OutBuffer bufa; |
|
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|
1283 Objects *args = targsi; |
|
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|
1284 if (args) |
|
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changeset
|
1285 { for (int i = 0; i < args->dim; i++) |
|
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|
1286 { |
|
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|
1287 if (i) |
|
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|
1288 bufa.writeByte(','); |
|
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|
1289 Object *oarg = (Object *)args->data[i]; |
|
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|
1290 ObjectToCBuffer(&bufa, &hgs, oarg); |
|
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|
1291 } |
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|
1292 } |
|
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|
1293 |
| 336 | 1294 OutBuffer buf; |
| 1295 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
|
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|
1296 error(loc, "cannot deduce template function from argument types !(%s)(%s)", |
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|
1297 bufa.toChars(), buf.toChars()); |
| 336 | 1298 } |
|
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|
1299 return NULL; |
| 336 | 1300 } |
| 1301 | |
| 1302 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1303 { | |
| 1304 #if 0 // Should handle template functions | |
| 1305 if (onemember && onemember->isFuncDeclaration()) | |
| 1306 buf->writestring("foo "); | |
| 1307 #endif | |
| 1308 buf->writestring(kind()); | |
| 1309 buf->writeByte(' '); | |
| 1310 buf->writestring(ident->toChars()); | |
| 1311 buf->writeByte('('); | |
| 1312 for (int i = 0; i < parameters->dim; i++) | |
| 1313 { | |
| 1314 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1315 if (hgs->ddoc) | |
| 1316 tp = (TemplateParameter *)origParameters->data[i]; | |
| 1317 if (i) | |
| 1318 buf->writeByte(','); | |
| 1319 tp->toCBuffer(buf, hgs); | |
| 1320 } | |
| 1321 buf->writeByte(')'); | |
|
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1322 #if DMDV2 |
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1323 if (constraint) |
|
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1324 { buf->writestring(" if ("); |
|
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1325 constraint->toCBuffer(buf, hgs); |
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1326 buf->writeByte(')'); |
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|
1327 } |
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|
1328 #endif |
| 336 | 1329 |
| 1330 if (hgs->hdrgen) | |
| 1331 { | |
| 1332 hgs->tpltMember++; | |
| 1333 buf->writenl(); | |
| 1334 buf->writebyte('{'); | |
| 1335 buf->writenl(); | |
| 1336 for (int i = 0; i < members->dim; i++) | |
| 1337 { | |
| 1338 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1339 s->toCBuffer(buf, hgs); | |
| 1340 } | |
| 1341 buf->writebyte('}'); | |
| 1342 buf->writenl(); | |
| 1343 hgs->tpltMember--; | |
| 1344 } | |
| 1345 } | |
| 1346 | |
| 1347 | |
| 1348 char *TemplateDeclaration::toChars() | |
| 1349 { OutBuffer buf; | |
| 1350 HdrGenState hgs; | |
| 1351 | |
| 1352 memset(&hgs, 0, sizeof(hgs)); | |
| 1353 buf.writestring(ident->toChars()); | |
| 1354 buf.writeByte('('); | |
| 1355 for (int i = 0; i < parameters->dim; i++) | |
| 1356 { | |
| 1357 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1358 if (i) | |
| 1359 buf.writeByte(','); | |
| 1360 tp->toCBuffer(&buf, &hgs); | |
| 1361 } | |
| 1362 buf.writeByte(')'); | |
|
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1363 #if DMDV2 |
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1364 if (constraint) |
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1365 { buf.writestring(" if ("); |
|
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1366 constraint->toCBuffer(&buf, &hgs); |
|
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changeset
|
1367 buf.writeByte(')'); |
|
330f999ade44
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|
1368 } |
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changeset
|
1369 #endif |
| 336 | 1370 buf.writeByte(0); |
| 1371 return (char *)buf.extractData(); | |
| 1372 } | |
| 1373 | |
| 1374 /* ======================== Type ============================================ */ | |
| 1375 | |
| 1376 /**** | |
| 1377 * Given an identifier, figure out which TemplateParameter it is. | |
| 1378 * Return -1 if not found. | |
| 1379 */ | |
| 1380 | |
| 1381 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) | |
| 1382 { | |
| 1383 for (size_t i = 0; i < parameters->dim; i++) | |
| 1384 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1385 | |
| 1386 if (tp->ident->equals(id)) | |
| 1387 return i; | |
| 1388 } | |
| 1389 return -1; | |
| 1390 } | |
| 1391 | |
| 1392 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) | |
| 1393 { | |
| 1394 assert(tparam->ty == Tident); | |
| 1395 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1396 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1397 if (tident->idents.dim == 0) | |
| 1398 { | |
| 1399 return templateIdentifierLookup(tident->ident, parameters); | |
| 1400 } | |
| 1401 return -1; | |
| 1402 } | |
| 1403 | |
| 1404 /* These form the heart of template argument deduction. | |
| 1405 * Given 'this' being the type argument to the template instance, | |
| 1406 * it is matched against the template declaration parameter specialization | |
| 1407 * 'tparam' to determine the type to be used for the parameter. | |
| 1408 * Example: | |
| 1409 * template Foo(T:T*) // template declaration | |
| 1410 * Foo!(int*) // template instantiation | |
| 1411 * Input: | |
| 1412 * this = int* | |
| 1413 * tparam = T | |
| 1414 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1415 * Output: | |
| 1416 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1417 */ | |
| 1418 | |
| 1419 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1420 Objects *dedtypes) | |
| 1421 { | |
|
875
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parents:
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diff
changeset
|
1422 #if 0 |
|
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parents:
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diff
changeset
|
1423 printf("Type::deduceType()\n"); |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
1424 printf("\tthis = %d, ", ty); print(); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
1425 printf("\ttparam = %d, ", tparam->ty); tparam->print(); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
1426 #endif |
| 336 | 1427 if (!tparam) |
| 1428 goto Lnomatch; | |
| 1429 | |
| 1430 if (this == tparam) | |
| 1431 goto Lexact; | |
| 1432 | |
| 1433 if (tparam->ty == Tident) | |
| 1434 { | |
| 1435 // Determine which parameter tparam is | |
| 1436 int i = templateParameterLookup(tparam, parameters); | |
| 1437 if (i == -1) | |
| 1438 { | |
| 1439 if (!sc) | |
| 1440 goto Lnomatch; | |
| 1441 | |
| 1442 /* Need a loc to go with the semantic routine. | |
| 1443 */ | |
| 1444 Loc loc; | |
| 1445 if (parameters->dim) | |
| 1446 { | |
| 1447 TemplateParameter *tp = (TemplateParameter *)parameters->data[0]; | |
| 1448 loc = tp->loc; | |
| 1449 } | |
| 1450 | |
| 1451 /* BUG: what if tparam is a template instance, that | |
| 1452 * has as an argument another Tident? | |
| 1453 */ | |
| 1454 tparam = tparam->semantic(loc, sc); | |
| 1455 assert(tparam->ty != Tident); | |
| 1456 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1457 } | |
| 1458 | |
| 1459 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1460 | |
| 1461 // Found the corresponding parameter tp | |
| 1462 if (!tp->isTemplateTypeParameter()) | |
| 1463 goto Lnomatch; | |
| 1464 Type *at = (Type *)dedtypes->data[i]; | |
| 1465 if (!at) | |
| 1466 { | |
| 1467 dedtypes->data[i] = (void *)this; | |
| 1468 goto Lexact; | |
| 1469 } | |
| 1470 if (equals(at)) | |
| 1471 goto Lexact; | |
| 1472 else if (ty == Tclass && at->ty == Tclass) | |
| 1473 { | |
| 1474 return (MATCH) implicitConvTo(at); | |
| 1475 } | |
| 1476 else if (ty == Tsarray && at->ty == Tarray && | |
| 1477 nextOf()->equals(at->nextOf())) | |
| 1478 { | |
| 1479 goto Lexact; | |
| 1480 } | |
| 1481 else | |
| 1482 goto Lnomatch; | |
| 1483 } | |
| 1484 | |
| 1485 if (ty != tparam->ty) | |
| 1486 return implicitConvTo(tparam); | |
| 1487 // goto Lnomatch; | |
| 1488 | |
| 1489 if (nextOf()) | |
| 1490 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1491 | |
| 1492 Lexact: | |
| 1493 return MATCHexact; | |
| 1494 | |
| 1495 Lnomatch: | |
| 1496 return MATCHnomatch; | |
| 1497 } | |
| 1498 | |
| 1499 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1500 Objects *dedtypes) | |
| 1501 { | |
| 1502 #if 0 | |
| 1503 printf("TypeSArray::deduceType()\n"); | |
| 1504 printf("\tthis = %d, ", ty); print(); | |
| 1505 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1506 #endif | |
| 1507 | |
| 1508 // Extra check that array dimensions must match | |
| 1509 if (tparam) | |
| 1510 { | |
| 1511 if (tparam->ty == Tsarray) | |
| 1512 { | |
| 1513 TypeSArray *tp = (TypeSArray *)tparam; | |
| 1514 | |
| 1515 if (tp->dim->op == TOKvar && | |
| 1516 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1517 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1518 // This code matches code in TypeInstance::deduceType() | |
| 1519 if (i == -1) | |
| 1520 goto Lnomatch; | |
| 1521 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1522 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1523 if (!tvp) | |
| 1524 goto Lnomatch; | |
| 1525 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1526 if (e) | |
| 1527 { | |
| 1528 if (!dim->equals(e)) | |
| 1529 goto Lnomatch; | |
| 1530 } | |
| 1531 else | |
| 1532 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1533 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1534 if (!m) | |
| 1535 goto Lnomatch; | |
| 1536 dedtypes->data[i] = dim; | |
| 1537 } | |
| 1538 } | |
| 1539 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1540 return MATCHnomatch; | |
| 1541 } | |
| 1542 else if (tparam->ty == Taarray) | |
| 1543 { | |
| 1544 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1545 if (tp->index->ty == Tident) | |
| 1546 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1547 | |
| 1548 if (tident->idents.dim == 0) | |
| 1549 { Identifier *id = tident->ident; | |
| 1550 | |
| 1551 for (size_t i = 0; i < parameters->dim; i++) | |
| 1552 { | |
| 1553 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1554 | |
| 1555 if (tp->ident->equals(id)) | |
| 1556 { // Found the corresponding template parameter | |
| 1557 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1558 if (!tvp || !tvp->valType->isintegral()) | |
| 1559 goto Lnomatch; | |
| 1560 | |
| 1561 if (dedtypes->data[i]) | |
| 1562 { | |
| 1563 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1564 goto Lnomatch; | |
| 1565 } | |
| 1566 else | |
| 1567 { dedtypes->data[i] = (void *)dim; | |
| 1568 } | |
| 1569 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1570 } | |
| 1571 } | |
| 1572 } | |
| 1573 } | |
| 1574 } | |
| 1575 else if (tparam->ty == Tarray) | |
| 1576 { MATCH m; | |
| 1577 | |
| 1578 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1579 if (m == MATCHexact) | |
| 1580 m = MATCHconvert; | |
| 1581 return m; | |
| 1582 } | |
| 1583 } | |
| 1584 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1585 | |
| 1586 Lnomatch: | |
| 1587 return MATCHnomatch; | |
| 1588 } | |
| 1589 | |
| 1590 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1591 { | |
| 1592 #if 0 | |
| 1593 printf("TypeAArray::deduceType()\n"); | |
| 1594 printf("\tthis = %d, ", ty); print(); | |
| 1595 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1596 #endif | |
| 1597 | |
| 1598 // Extra check that index type must match | |
| 1599 if (tparam && tparam->ty == Taarray) | |
| 1600 { | |
| 1601 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1602 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1603 { | |
| 1604 return MATCHnomatch; | |
| 1605 } | |
| 1606 } | |
| 1607 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1608 } | |
| 1609 | |
| 1610 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1611 { | |
| 1612 //printf("TypeFunction::deduceType()\n"); | |
| 1613 //printf("\tthis = %d, ", ty); print(); | |
| 1614 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1615 | |
| 1616 // Extra check that function characteristics must match | |
| 1617 if (tparam && tparam->ty == Tfunction) | |
| 1618 { | |
| 1619 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1620 if (varargs != tp->varargs || | |
| 1621 linkage != tp->linkage) | |
| 1622 return MATCHnomatch; | |
| 1623 | |
| 1624 size_t nfargs = Argument::dim(this->parameters); | |
| 1625 size_t nfparams = Argument::dim(tp->parameters); | |
| 1626 | |
| 1627 /* See if tuple match | |
| 1628 */ | |
| 1629 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1630 { | |
| 1631 /* See if 'A' of the template parameter matches 'A' | |
| 1632 * of the type of the last function parameter. | |
| 1633 */ | |
| 1634 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1635 if (fparam->type->ty != Tident) | |
| 1636 goto L1; | |
| 1637 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1638 if (tid->idents.dim) | |
| 1639 goto L1; | |
| 1640 | |
| 1641 /* Look through parameters to find tuple matching tid->ident | |
| 1642 */ | |
| 1643 size_t tupi = 0; | |
| 1644 for (; 1; tupi++) | |
| 1645 { if (tupi == parameters->dim) | |
| 1646 goto L1; | |
| 1647 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1648 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1649 if (tup && tup->ident->equals(tid->ident)) | |
| 1650 break; | |
| 1651 } | |
| 1652 | |
| 1653 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1654 * now form the tuple argument. | |
| 1655 */ | |
| 1656 int tuple_dim = nfargs - (nfparams - 1); | |
| 1657 | |
| 1658 /* See if existing tuple, and whether it matches or not | |
| 1659 */ | |
| 1660 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1661 if (o) | |
| 1662 { // Existing deduced argument must be a tuple, and must match | |
| 1663 Tuple *t = isTuple(o); | |
| 1664 if (!t || t->objects.dim != tuple_dim) | |
| 1665 return MATCHnomatch; | |
| 1666 for (size_t i = 0; i < tuple_dim; i++) | |
| 1667 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1668 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1669 return MATCHnomatch; | |
| 1670 } | |
| 1671 } | |
| 1672 else | |
| 1673 { // Create new tuple | |
| 1674 Tuple *t = new Tuple(); | |
| 1675 t->objects.setDim(tuple_dim); | |
| 1676 for (size_t i = 0; i < tuple_dim; i++) | |
| 1677 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1678 t->objects.data[i] = (void *)arg->type; | |
| 1679 } | |
| 1680 dedtypes->data[tupi] = (void *)t; | |
| 1681 } | |
| 1682 nfparams--; // don't consider the last parameter for type deduction | |
| 1683 goto L2; | |
| 1684 } | |
| 1685 | |
| 1686 L1: | |
| 1687 if (nfargs != nfparams) | |
| 1688 return MATCHnomatch; | |
| 1689 L2: | |
| 1690 for (size_t i = 0; i < nfparams; i++) | |
| 1691 { | |
| 1692 Argument *a = Argument::getNth(this->parameters, i); | |
| 1693 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1694 if (a->storageClass != ap->storageClass || | |
| 1695 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1696 return MATCHnomatch; | |
| 1697 } | |
| 1698 } | |
| 1699 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1700 } | |
| 1701 | |
| 1702 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1703 { | |
| 1704 // Extra check | |
| 1705 if (tparam && tparam->ty == Tident) | |
| 1706 { | |
| 1707 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1708 | |
| 1709 for (int i = 0; i < idents.dim; i++) | |
| 1710 { | |
| 1711 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1712 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1713 | |
| 1714 if (!id1->equals(id2)) | |
| 1715 return MATCHnomatch; | |
| 1716 } | |
| 1717 } | |
| 1718 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1719 } | |
| 1720 | |
| 1721 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1722 Type *tparam, TemplateParameters *parameters, | |
| 1723 Objects *dedtypes) | |
| 1724 { | |
| 1725 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1726 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1727 | |
| 1728 // Extra check | |
| 1729 if (tparam && tparam->ty == Tinstance) | |
| 1730 { | |
| 1731 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1732 | |
| 1733 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1734 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1735 if (!tp->tempinst->tempdecl) | |
| 1736 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); | |
| 1737 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1738 { | |
| 1739 /* Handle case of: | |
| 1740 * template Foo(T : sa!(T), alias sa) | |
| 1741 */ | |
| 1742 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1743 if (i == -1) | |
| 1744 { /* Didn't find it as a parameter identifier. Try looking | |
| 1745 * it up and seeing if is an alias. See Bugzilla 1454 | |
| 1746 */ | |
| 1747 Dsymbol *s = tempinst->tempdecl->scope->search(0, tp->tempinst->name, NULL); | |
| 1748 if (s) | |
| 1749 { | |
| 1750 s = s->toAlias(); | |
| 1751 TemplateDeclaration *td = s->isTemplateDeclaration(); | |
| 1752 if (td && td == tempinst->tempdecl) | |
| 1753 goto L2; | |
| 1754 } | |
| 1755 goto Lnomatch; | |
| 1756 } | |
| 1757 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; | |
| 1758 // This logic duplicates tpx->matchArg() | |
| 1759 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1760 if (!ta) | |
| 1761 goto Lnomatch; | |
| 1762 Dsymbol *sa = tempinst->tempdecl; | |
| 1763 if (!sa) | |
| 1764 goto Lnomatch; | |
| 1765 if (ta->specAlias && sa != ta->specAlias) | |
| 1766 goto Lnomatch; | |
| 1767 if (dedtypes->data[i]) | |
| 1768 { // Must match already deduced symbol | |
| 1769 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1770 | |
| 1771 if (s != sa) | |
| 1772 goto Lnomatch; | |
| 1773 } | |
| 1774 dedtypes->data[i] = sa; | |
| 1775 } | |
| 1776 } | |
| 1777 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1778 goto Lnomatch; | |
| 1779 | |
| 1780 L2: | |
| 1781 if (tempinst->tiargs->dim != tp->tempinst->tiargs->dim) | |
| 1782 goto Lnomatch; | |
| 1783 | |
| 1784 for (int i = 0; i < tempinst->tiargs->dim; i++) | |
| 1785 { | |
| 1786 //printf("\ttest: tempinst->tiargs[%d]\n", i); | |
| 1787 int j; | |
| 1788 Object *o1 = (Object *)tempinst->tiargs->data[i]; | |
| 1789 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1790 | |
| 1791 Type *t1 = isType(o1); | |
| 1792 Type *t2 = isType(o2); | |
| 1793 | |
| 1794 Expression *e1 = isExpression(o1); | |
| 1795 Expression *e2 = isExpression(o2); | |
| 1796 | |
| 1797 #if 0 | |
| 1798 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1799 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1800 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1801 if (e2) printf("e2 = %s\n", e2->toChars()); | |
| 1802 #endif | |
| 1803 | |
| 1804 if (t1 && t2) | |
| 1805 { | |
| 1806 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1807 goto Lnomatch; | |
| 1808 } | |
| 1809 else if (e1 && e2) | |
| 1810 { | |
| 1811 if (!e1->equals(e2)) | |
| 1812 { if (e2->op == TOKvar) | |
| 1813 { | |
| 1814 /* | |
| 1815 * (T:Number!(e2), int e2) | |
| 1816 */ | |
| 1817 j = templateIdentifierLookup(((VarExp *)e2)->var->ident, parameters); | |
| 1818 goto L1; | |
| 1819 } | |
| 1820 goto Lnomatch; | |
| 1821 } | |
| 1822 } | |
| 1823 else if (e1 && t2 && t2->ty == Tident) | |
| 1824 { | |
| 1825 j = templateParameterLookup(t2, parameters); | |
| 1826 L1: | |
| 1827 if (j == -1) | |
| 1828 goto Lnomatch; | |
| 1829 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; | |
| 1830 // BUG: use tp->matchArg() instead of the following | |
| 1831 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1832 if (!tv) | |
| 1833 goto Lnomatch; | |
| 1834 Expression *e = (Expression *)dedtypes->data[j]; | |
| 1835 if (e) | |
| 1836 { | |
| 1837 if (!e1->equals(e)) | |
| 1838 goto Lnomatch; | |
| 1839 } | |
| 1840 else | |
| 1841 { Type *vt = tv->valType->semantic(0, sc); | |
| 1842 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1843 if (!m) | |
| 1844 goto Lnomatch; | |
| 1845 dedtypes->data[j] = e1; | |
| 1846 } | |
| 1847 } | |
| 1848 // BUG: Need to handle alias and tuple parameters | |
| 1849 else | |
| 1850 goto Lnomatch; | |
| 1851 } | |
| 1852 } | |
| 1853 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1854 | |
| 1855 Lnomatch: | |
| 1856 return MATCHnomatch; | |
| 1857 } | |
| 1858 | |
| 1859 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1860 { | |
| 1861 //printf("TypeStruct::deduceType()\n"); | |
| 1862 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1863 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1864 | |
| 1865 /* If this struct is a template struct, and we're matching | |
| 1866 * it against a template instance, convert the struct type | |
| 1867 * to a template instance, too, and try again. | |
| 1868 */ | |
| 1869 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1870 | |
| 1871 if (tparam && tparam->ty == Tinstance) | |
| 1872 { | |
| 1873 if (ti && ti->toAlias() == sym) | |
| 1874 { | |
| 1875 TypeInstance *t = new TypeInstance(0, ti); | |
| 1876 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1877 } | |
| 1878 | |
| 1879 /* Match things like: | |
| 1880 * S!(T).foo | |
| 1881 */ | |
| 1882 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1883 if (tpi->idents.dim) | |
| 1884 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1885 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1886 { | |
| 1887 Type *tparent = sym->parent->getType(); | |
| 1888 if (tparent) | |
| 1889 { | |
| 1890 /* Slice off the .foo in S!(T).foo | |
| 1891 */ | |
| 1892 tpi->idents.dim--; | |
| 1893 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1894 tpi->idents.dim++; | |
| 1895 return m; | |
| 1896 } | |
| 1897 } | |
| 1898 } | |
| 1899 } | |
| 1900 | |
| 1901 // Extra check | |
| 1902 if (tparam && tparam->ty == Tstruct) | |
| 1903 { | |
| 1904 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1905 | |
| 1906 if (sym != tp->sym) | |
| 1907 return MATCHnomatch; | |
| 1908 } | |
| 1909 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1910 } | |
| 1911 | |
| 1912 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1913 { | |
| 1914 // Extra check | |
| 1915 if (tparam && tparam->ty == Tenum) | |
| 1916 { | |
| 1917 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1918 | |
| 1919 if (sym != tp->sym) | |
| 1920 return MATCHnomatch; | |
| 1921 } | |
| 1922 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1923 } | |
| 1924 | |
| 1925 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1926 { | |
| 1927 // Extra check | |
| 1928 if (tparam && tparam->ty == Ttypedef) | |
| 1929 { | |
| 1930 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 1931 | |
| 1932 if (sym != tp->sym) | |
| 1933 return MATCHnomatch; | |
| 1934 } | |
| 1935 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1936 } | |
| 1937 | |
| 1938 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1939 { | |
| 1940 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 1941 | |
| 1942 /* If this class is a template class, and we're matching | |
| 1943 * it against a template instance, convert the class type | |
| 1944 * to a template instance, too, and try again. | |
| 1945 */ | |
| 1946 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1947 | |
| 1948 if (tparam && tparam->ty == Tinstance) | |
| 1949 { | |
| 1950 if (ti && ti->toAlias() == sym) | |
| 1951 { | |
| 1952 TypeInstance *t = new TypeInstance(0, ti); | |
| 1953 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1954 } | |
| 1955 | |
| 1956 /* Match things like: | |
| 1957 * S!(T).foo | |
| 1958 */ | |
| 1959 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1960 if (tpi->idents.dim) | |
| 1961 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1962 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1963 { | |
| 1964 Type *tparent = sym->parent->getType(); | |
| 1965 if (tparent) | |
| 1966 { | |
| 1967 /* Slice off the .foo in S!(T).foo | |
| 1968 */ | |
| 1969 tpi->idents.dim--; | |
| 1970 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1971 tpi->idents.dim++; | |
| 1972 return m; | |
| 1973 } | |
| 1974 } | |
| 1975 } | |
| 1976 } | |
| 1977 | |
| 1978 // Extra check | |
| 1979 if (tparam && tparam->ty == Tclass) | |
| 1980 { | |
| 1981 TypeClass *tp = (TypeClass *)tparam; | |
| 1982 | |
| 1983 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 1984 return (MATCH) implicitConvTo(tp); | |
| 1985 } | |
| 1986 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1987 } | |
| 1988 | |
| 1989 /* ======================== TemplateParameter =============================== */ | |
| 1990 | |
| 1991 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 1992 { | |
| 1993 this->loc = loc; | |
| 1994 this->ident = ident; | |
| 1995 this->sparam = NULL; | |
| 1996 } | |
| 1997 | |
| 1998 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 1999 { | |
| 2000 return NULL; | |
| 2001 } | |
| 2002 | |
| 2003 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 2004 { | |
| 2005 return NULL; | |
| 2006 } | |
| 2007 | |
| 2008 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 2009 { | |
| 2010 return NULL; | |
| 2011 } | |
| 2012 | |
| 2013 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 2014 { | |
| 2015 return NULL; | |
| 2016 } | |
| 2017 | |
| 2018 #if DMDV2 | |
| 2019 TemplateThisParameter *TemplateParameter::isTemplateThisParameter() | |
| 2020 { | |
| 2021 return NULL; | |
| 2022 } | |
| 2023 #endif | |
| 2024 | |
| 2025 /* ======================== TemplateTypeParameter =========================== */ | |
| 2026 | |
| 2027 // type-parameter | |
| 2028 | |
| 2029 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 2030 Type *defaultType) | |
| 2031 : TemplateParameter(loc, ident) | |
| 2032 { | |
| 2033 this->ident = ident; | |
| 2034 this->specType = specType; | |
| 2035 this->defaultType = defaultType; | |
| 2036 } | |
| 2037 | |
| 2038 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 2039 { | |
| 2040 return this; | |
| 2041 } | |
| 2042 | |
| 2043 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 2044 { | |
| 2045 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 2046 if (tp->specType) | |
| 2047 tp->specType = specType->syntaxCopy(); | |
| 2048 if (defaultType) | |
| 2049 tp->defaultType = defaultType->syntaxCopy(); | |
| 2050 return tp; | |
| 2051 } | |
| 2052 | |
| 2053 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 2054 { | |
| 2055 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 2056 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2057 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2058 if (!sc->insert(sparam)) | |
| 2059 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2060 } | |
| 2061 | |
| 2062 void TemplateTypeParameter::semantic(Scope *sc) | |
| 2063 { | |
| 2064 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 2065 if (specType) | |
| 2066 { | |
| 2067 specType = specType->semantic(loc, sc); | |
| 2068 } | |
| 2069 #if 0 // Don't do semantic() until instantiation | |
| 2070 if (defaultType) | |
| 2071 { | |
| 2072 defaultType = defaultType->semantic(loc, sc); | |
| 2073 } | |
| 2074 #endif | |
| 2075 } | |
| 2076 | |
| 2077 /**************************************** | |
| 2078 * Determine if two TemplateParameters are the same | |
| 2079 * as far as TemplateDeclaration overloading goes. | |
| 2080 * Returns: | |
| 2081 * 1 match | |
| 2082 * 0 no match | |
| 2083 */ | |
| 2084 | |
| 2085 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 2086 { | |
| 2087 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 2088 | |
| 2089 if (ttp) | |
| 2090 { | |
| 2091 if (specType != ttp->specType) | |
| 2092 goto Lnomatch; | |
| 2093 | |
| 2094 if (specType && !specType->equals(ttp->specType)) | |
| 2095 goto Lnomatch; | |
| 2096 | |
| 2097 return 1; // match | |
| 2098 } | |
| 2099 | |
| 2100 Lnomatch: | |
| 2101 return 0; | |
| 2102 } | |
| 2103 | |
| 2104 /******************************************* | |
| 2105 * Match to a particular TemplateParameter. | |
| 2106 * Input: | |
| 2107 * i i'th argument | |
| 2108 * tiargs[] actual arguments to template instance | |
| 2109 * parameters[] template parameters | |
| 2110 * dedtypes[] deduced arguments to template instance | |
| 2111 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 2112 */ | |
| 2113 | |
| 2114 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 2115 int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2116 Declaration **psparam) | |
| 2117 { | |
| 2118 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 2119 Type *t; | |
| 2120 Object *oarg; | |
| 2121 MATCH m = MATCHexact; | |
| 2122 Type *ta; | |
| 2123 | |
| 2124 if (i < tiargs->dim) | |
| 2125 oarg = (Object *)tiargs->data[i]; | |
| 2126 else | |
| 2127 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2128 oarg = defaultArg(loc, sc); |
| 336 | 2129 if (!oarg) |
| 2130 { assert(i < dedtypes->dim); | |
| 2131 // It might have already been deduced | |
| 2132 oarg = (Object *)dedtypes->data[i]; | |
| 2133 if (!oarg) | |
| 2134 goto Lnomatch; | |
| 2135 } | |
| 2136 } | |
| 2137 | |
| 2138 ta = isType(oarg); | |
| 2139 if (!ta) | |
| 2140 goto Lnomatch; | |
| 2141 //printf("ta is %s\n", ta->toChars()); | |
| 2142 | |
| 2143 t = (Type *)dedtypes->data[i]; | |
| 2144 | |
| 2145 if (specType) | |
| 2146 { | |
| 2147 //printf("\tcalling deduceType(): ta is %s, specType is %s\n", ta->toChars(), specType->toChars()); | |
| 2148 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 2149 if (m2 == MATCHnomatch) | |
| 2150 { //printf("\tfailed deduceType\n"); | |
| 2151 goto Lnomatch; | |
| 2152 } | |
| 2153 | |
| 2154 if (m2 < m) | |
| 2155 m = m2; | |
| 2156 t = (Type *)dedtypes->data[i]; | |
| 2157 } | |
| 2158 else | |
| 2159 { | |
| 2160 // So that matches with specializations are better | |
| 2161 m = MATCHconvert; | |
| 2162 if (t) | |
| 2163 { // Must match already deduced type | |
| 2164 | |
| 2165 m = MATCHexact; | |
| 2166 if (!t->equals(ta)) | |
| 2167 { //printf("t = %s ta = %s\n", t->toChars(), ta->toChars()); | |
| 2168 goto Lnomatch; | |
| 2169 } | |
| 2170 } | |
| 2171 } | |
| 2172 | |
| 2173 if (!t) | |
| 2174 { | |
| 2175 dedtypes->data[i] = ta; | |
| 2176 t = ta; | |
| 2177 } | |
| 2178 *psparam = new AliasDeclaration(loc, ident, t); | |
| 2179 //printf("\tm = %d\n", m); | |
| 2180 return m; | |
| 2181 | |
| 2182 Lnomatch: | |
| 2183 *psparam = NULL; | |
| 2184 //printf("\tm = %d\n", MATCHnomatch); | |
| 2185 return MATCHnomatch; | |
| 2186 } | |
| 2187 | |
| 2188 | |
| 2189 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 2190 { | |
| 2191 printf(" %s\n", ident->toChars()); | |
| 2192 | |
| 2193 Type *t = isType(oarg); | |
| 2194 Type *ta = isType(oded); | |
| 2195 | |
| 2196 assert(ta); | |
| 2197 | |
| 2198 if (specType) | |
| 2199 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 2200 if (defaultType) | |
| 2201 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 2202 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 2203 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 2204 } | |
| 2205 | |
| 2206 | |
| 2207 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2208 { | |
| 2209 buf->writestring(ident->toChars()); | |
| 2210 if (specType) | |
| 2211 { | |
| 2212 buf->writestring(" : "); | |
| 2213 specType->toCBuffer(buf, NULL, hgs); | |
| 2214 } | |
| 2215 if (defaultType) | |
| 2216 { | |
| 2217 buf->writestring(" = "); | |
| 2218 defaultType->toCBuffer(buf, NULL, hgs); | |
| 2219 } | |
| 2220 } | |
| 2221 | |
| 2222 | |
| 2223 void *TemplateTypeParameter::dummyArg() | |
| 2224 { Type *t; | |
| 2225 | |
| 2226 if (specType) | |
| 2227 t = specType; | |
| 2228 else | |
| 2229 { // Use this for alias-parameter's too (?) | |
| 2230 t = new TypeIdentifier(loc, ident); | |
| 2231 } | |
| 2232 return (void *)t; | |
| 2233 } | |
| 2234 | |
| 2235 | |
| 2236 Object *TemplateTypeParameter::specialization() | |
| 2237 { | |
| 2238 return specType; | |
| 2239 } | |
| 2240 | |
| 2241 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2242 Object *TemplateTypeParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2243 { |
| 2244 Type *t; | |
| 2245 | |
| 2246 t = defaultType; | |
| 2247 if (t) | |
| 2248 { | |
| 2249 t = t->syntaxCopy(); | |
| 2250 t = t->semantic(loc, sc); | |
| 2251 } | |
| 2252 return t; | |
| 2253 } | |
| 2254 | |
| 2255 /* ======================== TemplateThisParameter =========================== */ | |
| 2256 | |
| 2257 #if DMDV2 | |
| 2258 // this-parameter | |
| 2259 | |
| 2260 TemplateThisParameter::TemplateThisParameter(Loc loc, Identifier *ident, | |
| 2261 Type *specType, | |
| 2262 Type *defaultType) | |
| 2263 : TemplateTypeParameter(loc, ident, specType, defaultType) | |
| 2264 { | |
| 2265 } | |
| 2266 | |
| 2267 TemplateThisParameter *TemplateThisParameter::isTemplateThisParameter() | |
| 2268 { | |
| 2269 return this; | |
| 2270 } | |
| 2271 | |
| 2272 TemplateParameter *TemplateThisParameter::syntaxCopy() | |
| 2273 { | |
| 2274 TemplateThisParameter *tp = new TemplateThisParameter(loc, ident, specType, defaultType); | |
| 2275 if (tp->specType) | |
| 2276 tp->specType = specType->syntaxCopy(); | |
| 2277 if (defaultType) | |
| 2278 tp->defaultType = defaultType->syntaxCopy(); | |
| 2279 return tp; | |
| 2280 } | |
| 2281 | |
| 2282 void TemplateThisParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2283 { | |
| 2284 buf->writestring("this "); | |
| 2285 TemplateTypeParameter::toCBuffer(buf, hgs); | |
| 2286 } | |
| 2287 #endif | |
| 2288 | |
| 2289 /* ======================== TemplateAliasParameter ========================== */ | |
| 2290 | |
| 2291 // alias-parameter | |
| 2292 | |
| 2293 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2294 | |
| 2295 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2296 : TemplateParameter(loc, ident) | |
| 2297 { | |
| 2298 this->ident = ident; | |
| 2299 this->specAliasT = specAliasT; | |
| 2300 this->defaultAlias = defaultAlias; | |
| 2301 | |
| 2302 this->specAlias = NULL; | |
| 2303 } | |
| 2304 | |
| 2305 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2306 { | |
| 2307 return this; | |
| 2308 } | |
| 2309 | |
| 2310 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2311 { | |
| 2312 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2313 if (tp->specAliasT) | |
| 2314 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2315 if (defaultAlias) | |
| 2316 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2317 return tp; | |
| 2318 } | |
| 2319 | |
| 2320 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2321 { | |
| 2322 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2323 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2324 if (!sc->insert(sparam)) | |
| 2325 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2326 } | |
| 2327 | |
| 2328 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2329 { | |
| 2330 if (specAliasT) | |
| 2331 { | |
| 2332 specAlias = specAliasT->toDsymbol(sc); | |
| 2333 if (!specAlias) | |
| 2334 error(loc, "%s is not a symbol", specAliasT->toChars()); | |
| 2335 } | |
| 2336 #if 0 // Don't do semantic() until instantiation | |
| 2337 if (defaultAlias) | |
| 2338 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2339 #endif | |
| 2340 } | |
| 2341 | |
| 2342 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2343 { | |
| 2344 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2345 | |
| 2346 if (tap) | |
| 2347 { | |
| 2348 if (specAlias != tap->specAlias) | |
| 2349 goto Lnomatch; | |
| 2350 | |
| 2351 return 1; // match | |
| 2352 } | |
| 2353 | |
| 2354 Lnomatch: | |
| 2355 return 0; | |
| 2356 } | |
| 2357 | |
| 2358 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2359 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2360 Declaration **psparam) | |
| 2361 { | |
| 2362 Dsymbol *sa; | |
| 2363 Object *oarg; | |
| 2364 Expression *ea; | |
| 2365 | |
| 2366 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2367 | |
| 2368 if (i < tiargs->dim) | |
| 2369 oarg = (Object *)tiargs->data[i]; | |
| 2370 else | |
| 2371 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2372 oarg = defaultArg(loc, sc); |
| 336 | 2373 if (!oarg) |
| 2374 { assert(i < dedtypes->dim); | |
| 2375 // It might have already been deduced | |
| 2376 oarg = (Object *)dedtypes->data[i]; | |
| 2377 if (!oarg) | |
| 2378 goto Lnomatch; | |
| 2379 } | |
| 2380 } | |
| 2381 | |
| 2382 sa = getDsymbol(oarg); | |
| 2383 if (!sa) | |
| 2384 goto Lnomatch; | |
| 2385 | |
| 2386 if (specAlias) | |
| 2387 { | |
| 2388 if (!sa || sa == sdummy) | |
| 2389 goto Lnomatch; | |
| 2390 if (sa != specAlias) | |
| 2391 goto Lnomatch; | |
| 2392 } | |
| 2393 else if (dedtypes->data[i]) | |
| 2394 { // Must match already deduced symbol | |
| 2395 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2396 | |
| 2397 if (!sa || s != sa) | |
| 2398 goto Lnomatch; | |
| 2399 } | |
| 2400 dedtypes->data[i] = sa; | |
| 2401 | |
| 2402 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2403 return MATCHexact; | |
| 2404 | |
| 2405 Lnomatch: | |
| 2406 *psparam = NULL; | |
| 2407 return MATCHnomatch; | |
| 2408 } | |
| 2409 | |
| 2410 | |
| 2411 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2412 { | |
| 2413 printf(" %s\n", ident->toChars()); | |
| 2414 | |
| 2415 Dsymbol *sa = isDsymbol(oded); | |
| 2416 assert(sa); | |
| 2417 | |
| 2418 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2419 } | |
| 2420 | |
| 2421 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2422 { | |
| 2423 buf->writestring("alias "); | |
| 2424 buf->writestring(ident->toChars()); | |
| 2425 if (specAliasT) | |
| 2426 { | |
| 2427 buf->writestring(" : "); | |
| 2428 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2429 } | |
| 2430 if (defaultAlias) | |
| 2431 { | |
| 2432 buf->writestring(" = "); | |
| 2433 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2434 } | |
| 2435 } | |
| 2436 | |
| 2437 | |
| 2438 void *TemplateAliasParameter::dummyArg() | |
| 2439 { Dsymbol *s; | |
| 2440 | |
| 2441 s = specAlias; | |
| 2442 if (!s) | |
| 2443 { | |
| 2444 if (!sdummy) | |
| 2445 sdummy = new Dsymbol(); | |
| 2446 s = sdummy; | |
| 2447 } | |
| 2448 return (void*)s; | |
| 2449 } | |
| 2450 | |
| 2451 | |
| 2452 Object *TemplateAliasParameter::specialization() | |
| 2453 { | |
| 2454 return specAliasT; | |
| 2455 } | |
| 2456 | |
| 2457 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2458 Object *TemplateAliasParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2459 { |
| 2460 Dsymbol *s = NULL; | |
| 2461 | |
| 2462 if (defaultAlias) | |
| 2463 { | |
| 2464 s = defaultAlias->toDsymbol(sc); | |
| 2465 if (!s) | |
| 2466 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2467 } | |
| 2468 return s; | |
| 2469 } | |
| 2470 | |
| 2471 /* ======================== TemplateValueParameter ========================== */ | |
| 2472 | |
| 2473 // value-parameter | |
| 2474 | |
| 2475 Expression *TemplateValueParameter::edummy = NULL; | |
| 2476 | |
| 2477 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2478 Expression *specValue, Expression *defaultValue) | |
| 2479 : TemplateParameter(loc, ident) | |
| 2480 { | |
| 2481 this->ident = ident; | |
| 2482 this->valType = valType; | |
| 2483 this->specValue = specValue; | |
| 2484 this->defaultValue = defaultValue; | |
| 2485 } | |
| 2486 | |
| 2487 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2488 { | |
| 2489 return this; | |
| 2490 } | |
| 2491 | |
| 2492 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2493 { | |
| 2494 TemplateValueParameter *tp = | |
| 2495 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2496 tp->valType = valType->syntaxCopy(); | |
| 2497 if (specValue) | |
| 2498 tp->specValue = specValue->syntaxCopy(); | |
| 2499 if (defaultValue) | |
| 2500 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2501 return tp; | |
| 2502 } | |
| 2503 | |
| 2504 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2505 { | |
| 2506 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2507 v->storage_class = STCtemplateparameter; | |
| 2508 if (!sc->insert(v)) | |
| 2509 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2510 sparam = v; | |
| 2511 } | |
| 2512 | |
| 2513 void TemplateValueParameter::semantic(Scope *sc) | |
| 2514 { | |
| 2515 sparam->semantic(sc); | |
| 2516 valType = valType->semantic(loc, sc); | |
| 2517 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2518 valType->ty != Tident) | |
| 2519 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2520 | |
| 2521 if (specValue) | |
| 2522 { Expression *e = specValue; | |
| 2523 | |
| 2524 e = e->semantic(sc); | |
| 2525 e = e->implicitCastTo(sc, valType); | |
| 2526 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2527 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2528 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2529 specValue = e; | |
| 2530 //e->toInteger(); | |
| 2531 } | |
| 2532 | |
| 2533 #if 0 // defer semantic analysis to arg match | |
| 2534 if (defaultValue) | |
| 2535 { Expression *e = defaultValue; | |
| 2536 | |
| 2537 e = e->semantic(sc); | |
| 2538 e = e->implicitCastTo(sc, valType); | |
| 2539 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2540 if (e->op == TOKint64) | |
| 2541 defaultValue = e; | |
| 2542 //e->toInteger(); | |
| 2543 } | |
| 2544 #endif | |
| 2545 } | |
| 2546 | |
| 2547 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2548 { | |
| 2549 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2550 | |
| 2551 if (tvp) | |
| 2552 { | |
| 2553 if (valType != tvp->valType) | |
| 2554 goto Lnomatch; | |
| 2555 | |
| 2556 if (valType && !valType->equals(tvp->valType)) | |
| 2557 goto Lnomatch; | |
| 2558 | |
| 2559 if (specValue != tvp->specValue) | |
| 2560 goto Lnomatch; | |
| 2561 | |
| 2562 return 1; // match | |
| 2563 } | |
| 2564 | |
| 2565 Lnomatch: | |
| 2566 return 0; | |
| 2567 } | |
| 2568 | |
| 2569 | |
| 2570 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2571 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2572 Declaration **psparam) | |
| 2573 { | |
| 2574 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2575 | |
| 2576 Initializer *init; | |
| 2577 Declaration *sparam; | |
| 2578 MATCH m = MATCHexact; | |
| 2579 Expression *ei; | |
| 2580 Object *oarg; | |
| 2581 | |
| 2582 if (i < tiargs->dim) | |
| 2583 oarg = (Object *)tiargs->data[i]; | |
| 2584 else | |
| 2585 { // Get default argument instead | |
|
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diff
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|
2586 oarg = defaultArg(loc, sc); |
| 336 | 2587 if (!oarg) |
| 2588 { assert(i < dedtypes->dim); | |
| 2589 // It might have already been deduced | |
| 2590 oarg = (Object *)dedtypes->data[i]; | |
| 2591 if (!oarg) | |
| 2592 goto Lnomatch; | |
| 2593 } | |
| 2594 } | |
| 2595 | |
| 2596 ei = isExpression(oarg); | |
| 2597 Type *vt; | |
| 2598 | |
| 2599 if (!ei && oarg) | |
| 2600 goto Lnomatch; | |
| 2601 | |
| 2602 if (specValue) | |
| 2603 { | |
| 2604 if (!ei || ei == edummy) | |
| 2605 goto Lnomatch; | |
| 2606 | |
| 2607 Expression *e = specValue; | |
| 2608 | |
| 2609 e = e->semantic(sc); | |
| 2610 e = e->implicitCastTo(sc, valType); | |
| 2611 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2612 | |
| 2613 ei = ei->syntaxCopy(); | |
| 2614 ei = ei->semantic(sc); | |
| 2615 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2616 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2617 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2618 if (!ei->equals(e)) | |
| 2619 goto Lnomatch; | |
| 2620 } | |
| 2621 else if (dedtypes->data[i]) | |
| 2622 { // Must match already deduced value | |
| 2623 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2624 | |
| 2625 if (!ei || !ei->equals(e)) | |
| 2626 goto Lnomatch; | |
| 2627 } | |
| 2628 Lmatch: | |
| 2629 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2630 vt = valType->semantic(0, sc); | |
| 2631 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2632 if (ei->type) | |
| 2633 { | |
| 2634 m = (MATCH)ei->implicitConvTo(vt); | |
| 2635 //printf("m: %d\n", m); | |
| 2636 if (!m) | |
| 2637 goto Lnomatch; | |
| 2638 } | |
| 2639 dedtypes->data[i] = ei; | |
| 2640 | |
| 2641 init = new ExpInitializer(loc, ei); | |
| 2642 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2643 sparam->storage_class = STCconst; | |
| 2644 *psparam = sparam; | |
| 2645 return m; | |
| 2646 | |
| 2647 Lnomatch: | |
| 2648 //printf("\tno match\n"); | |
| 2649 *psparam = NULL; | |
| 2650 return MATCHnomatch; | |
| 2651 } | |
| 2652 | |
| 2653 | |
| 2654 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2655 { | |
| 2656 printf(" %s\n", ident->toChars()); | |
| 2657 | |
| 2658 Expression *ea = isExpression(oded); | |
| 2659 | |
| 2660 if (specValue) | |
| 2661 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2662 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2663 } | |
| 2664 | |
| 2665 | |
| 2666 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2667 { | |
| 2668 valType->toCBuffer(buf, ident, hgs); | |
| 2669 if (specValue) | |
| 2670 { | |
| 2671 buf->writestring(" : "); | |
| 2672 specValue->toCBuffer(buf, hgs); | |
| 2673 } | |
| 2674 if (defaultValue) | |
| 2675 { | |
| 2676 buf->writestring(" = "); | |
| 2677 defaultValue->toCBuffer(buf, hgs); | |
| 2678 } | |
| 2679 } | |
| 2680 | |
| 2681 | |
| 2682 void *TemplateValueParameter::dummyArg() | |
| 2683 { Expression *e; | |
| 2684 | |
| 2685 e = specValue; | |
| 2686 if (!e) | |
| 2687 { | |
| 2688 // Create a dummy value | |
| 2689 if (!edummy) | |
| 2690 edummy = valType->defaultInit(); | |
| 2691 e = edummy; | |
| 2692 } | |
| 2693 return (void *)e; | |
| 2694 } | |
| 2695 | |
| 2696 | |
| 2697 Object *TemplateValueParameter::specialization() | |
| 2698 { | |
| 2699 return specValue; | |
| 2700 } | |
| 2701 | |
| 2702 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
2703 Object *TemplateValueParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2704 { |
| 2705 Expression *e = defaultValue; | |
| 2706 if (e) | |
| 2707 { | |
| 2708 e = e->syntaxCopy(); | |
| 2709 e = e->semantic(sc); | |
| 2710 #if DMDV2 | |
| 2711 if (e->op == TOKdefault) | |
| 2712 { DefaultInitExp *de = (DefaultInitExp *)e; | |
| 2713 e = de->resolve(loc, sc); | |
| 2714 } | |
| 2715 #endif | |
| 2716 } | |
| 2717 return e; | |
| 2718 } | |
| 2719 | |
| 2720 /* ======================== TemplateTupleParameter ========================== */ | |
| 2721 | |
| 2722 // variadic-parameter | |
| 2723 | |
| 2724 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2725 : TemplateParameter(loc, ident) | |
| 2726 { | |
| 2727 this->ident = ident; | |
| 2728 } | |
| 2729 | |
| 2730 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2731 { | |
| 2732 return this; | |
| 2733 } | |
| 2734 | |
| 2735 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2736 { | |
| 2737 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2738 return tp; | |
| 2739 } | |
| 2740 | |
| 2741 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2742 { | |
| 2743 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2744 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2745 if (!sc->insert(sparam)) | |
| 2746 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2747 } | |
| 2748 | |
| 2749 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2750 { | |
| 2751 } | |
| 2752 | |
| 2753 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2754 { | |
| 2755 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2756 | |
| 2757 if (tvp) | |
| 2758 { | |
| 2759 return 1; // match | |
| 2760 } | |
| 2761 | |
| 2762 Lnomatch: | |
| 2763 return 0; | |
| 2764 } | |
| 2765 | |
| 2766 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2767 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2768 Objects *dedtypes, | |
| 2769 Declaration **psparam) | |
| 2770 { | |
| 2771 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2772 | |
| 2773 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2774 * for the variadic parameter. | |
| 2775 */ | |
| 2776 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2777 Tuple *ovar; | |
| 2778 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2779 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2780 else | |
| 2781 { | |
| 2782 ovar = new Tuple(); | |
| 2783 //printf("ovar = %p\n", ovar); | |
| 2784 if (i < tiargs->dim) | |
| 2785 { | |
| 2786 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2787 ovar->objects.setDim(tiargs->dim - i); | |
| 2788 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2789 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2790 } | |
| 2791 } | |
| 2792 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2793 dedtypes->data[i] = (void *)ovar; | |
| 2794 return MATCHexact; | |
| 2795 } | |
| 2796 | |
| 2797 | |
| 2798 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2799 { | |
| 2800 printf(" %s... [", ident->toChars()); | |
| 2801 Tuple *v = isTuple(oded); | |
| 2802 assert(v); | |
| 2803 | |
| 2804 //printf("|%d| ", v->objects.dim); | |
| 2805 for (int i = 0; i < v->objects.dim; i++) | |
| 2806 { | |
| 2807 if (i) | |
| 2808 printf(", "); | |
| 2809 | |
| 2810 Object *o = (Object *)v->objects.data[i]; | |
| 2811 | |
| 2812 Dsymbol *sa = isDsymbol(o); | |
| 2813 if (sa) | |
| 2814 printf("alias: %s", sa->toChars()); | |
| 2815 | |
| 2816 Type *ta = isType(o); | |
| 2817 if (ta) | |
| 2818 printf("type: %s", ta->toChars()); | |
| 2819 | |
| 2820 Expression *ea = isExpression(o); | |
| 2821 if (ea) | |
| 2822 printf("exp: %s", ea->toChars()); | |
| 2823 | |
| 2824 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2825 } | |
| 2826 | |
| 2827 printf("]\n"); | |
| 2828 } | |
| 2829 | |
| 2830 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2831 { | |
| 2832 buf->writestring(ident->toChars()); | |
| 2833 buf->writestring("..."); | |
| 2834 } | |
| 2835 | |
| 2836 | |
| 2837 void *TemplateTupleParameter::dummyArg() | |
| 2838 { | |
| 2839 return NULL; | |
| 2840 } | |
| 2841 | |
| 2842 | |
| 2843 Object *TemplateTupleParameter::specialization() | |
| 2844 { | |
| 2845 return NULL; | |
| 2846 } | |
| 2847 | |
| 2848 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2849 Object *TemplateTupleParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2850 { |
| 2851 return NULL; | |
| 2852 } | |
| 2853 | |
| 2854 /* ======================== TemplateInstance ================================ */ | |
| 2855 | |
| 2856 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2857 : ScopeDsymbol(NULL) | |
| 2858 { | |
| 2859 #if LOG | |
| 2860 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2861 #endif | |
| 2862 this->loc = loc; | |
| 2863 this->name = ident; | |
| 2864 this->tiargs = NULL; | |
| 2865 this->tempdecl = NULL; | |
| 2866 this->inst = NULL; | |
| 2867 this->argsym = NULL; | |
| 2868 this->aliasdecl = NULL; | |
| 2869 this->semanticdone = 0; | |
| 2870 this->semantictiargsdone = 0; | |
| 2871 this->withsym = NULL; | |
| 2872 this->nest = 0; | |
| 2873 this->havetempdecl = 0; | |
| 2874 this->isnested = NULL; | |
| 2875 this->errors = 0; | |
|
561
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Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2876 this->tinst = NULL; |
| 336 | 2877 } |
| 2878 | |
|
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Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2879 /***************** |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2880 * This constructor is only called when we figured out which function |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2881 * template to instantiate. |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
2882 */ |
| 336 | 2883 |
| 2884 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2885 : ScopeDsymbol(NULL) | |
| 2886 { | |
| 2887 #if LOG | |
| 2888 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2889 #endif | |
| 2890 this->loc = loc; | |
| 2891 this->name = td->ident; | |
| 2892 this->tiargs = tiargs; | |
| 2893 this->tempdecl = td; | |
| 2894 this->inst = NULL; | |
| 2895 this->argsym = NULL; | |
| 2896 this->aliasdecl = NULL; | |
| 2897 this->semanticdone = 0; | |
| 2898 this->semantictiargsdone = 1; | |
| 2899 this->withsym = NULL; | |
| 2900 this->nest = 0; | |
| 2901 this->havetempdecl = 1; | |
| 2902 this->isnested = NULL; | |
| 2903 this->errors = 0; | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2904 this->tinst = NULL; |
| 336 | 2905 |
| 2906 assert((size_t)tempdecl->scope > 0x10000); | |
| 2907 } | |
| 2908 | |
| 2909 | |
| 2910 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 2911 { | |
| 2912 Objects *a = NULL; | |
| 2913 if (objs) | |
| 2914 { a = new Objects(); | |
| 2915 a->setDim(objs->dim); | |
| 2916 for (size_t i = 0; i < objs->dim; i++) | |
| 2917 { | |
| 2918 Type *ta = isType((Object *)objs->data[i]); | |
| 2919 if (ta) | |
| 2920 a->data[i] = ta->syntaxCopy(); | |
| 2921 else | |
| 2922 { | |
| 2923 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 2924 assert(ea); | |
| 2925 a->data[i] = ea->syntaxCopy(); | |
| 2926 } | |
| 2927 } | |
| 2928 } | |
| 2929 return a; | |
| 2930 } | |
| 2931 | |
| 2932 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 2933 { | |
| 2934 TemplateInstance *ti; | |
| 2935 | |
| 2936 if (s) | |
| 2937 ti = (TemplateInstance *)s; | |
| 2938 else | |
| 2939 ti = new TemplateInstance(loc, name); | |
| 2940 | |
| 2941 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 2942 | |
| 2943 ScopeDsymbol::syntaxCopy(ti); | |
| 2944 return ti; | |
| 2945 } | |
| 2946 | |
| 2947 | |
| 2948 void TemplateInstance::semantic(Scope *sc) | |
| 2949 { | |
| 2950 if (global.errors) | |
| 2951 { | |
| 2952 if (!global.gag) | |
| 2953 { | |
| 2954 /* Trying to soldier on rarely generates useful messages | |
| 2955 * at this point. | |
| 2956 */ | |
| 2957 fatal(); | |
| 2958 } | |
| 2959 return; | |
| 2960 } | |
| 2961 #if LOG | |
| 2962 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 2963 #endif | |
| 2964 if (inst) // if semantic() was already run | |
| 2965 { | |
| 2966 #if LOG | |
| 2967 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 2968 #endif | |
| 2969 return; | |
| 2970 } | |
| 2971 | |
| 2972 if (semanticdone != 0) | |
| 2973 { | |
| 2974 error(loc, "recursive template expansion"); | |
| 2975 // inst = this; | |
| 2976 return; | |
| 2977 } | |
| 2978 semanticdone = 1; | |
| 2979 | |
|
561
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Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2980 // get the enclosing template instance from the scope tinst |
|
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parents:
527
diff
changeset
|
2981 tinst = sc->tinst; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2982 |
| 336 | 2983 #if LOG |
| 2984 printf("\tdo semantic\n"); | |
| 2985 #endif | |
| 2986 if (havetempdecl) | |
| 2987 { | |
| 2988 assert((size_t)tempdecl->scope > 0x10000); | |
| 2989 // Deduce tdtypes | |
| 2990 tdtypes.setDim(tempdecl->parameters->dim); | |
| 2991 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 2992 { | |
| 2993 error("incompatible arguments for template instantiation"); | |
| 2994 inst = this; | |
| 2995 return; | |
| 2996 } | |
| 2997 } | |
| 2998 else | |
| 2999 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3000 /* Run semantic on each argument, place results in tiargs[] |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3001 * (if we havetempdecl, then tiargs is already evaluated) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3002 */ |
| 336 | 3003 semanticTiargs(sc); |
| 3004 | |
| 3005 tempdecl = findTemplateDeclaration(sc); | |
| 3006 if (tempdecl) | |
| 3007 tempdecl = findBestMatch(sc); | |
| 3008 if (!tempdecl || global.errors) | |
| 3009 { inst = this; | |
| 3010 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 3011 return; // error recovery | |
| 3012 } | |
| 3013 } | |
| 3014 | |
| 3015 isNested(tiargs); | |
| 3016 | |
| 3017 /* See if there is an existing TemplateInstantiation that already | |
| 3018 * implements the typeargs. If so, just refer to that one instead. | |
| 3019 */ | |
| 3020 | |
| 3021 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 3022 { | |
| 3023 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 3024 #if LOG | |
| 3025 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 3026 #endif | |
| 3027 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 3028 | |
| 3029 // Nesting must match | |
| 3030 if (isnested != ti->isnested) | |
| 3031 continue; | |
| 3032 #if 0 | |
| 3033 if (isnested && sc->parent != ti->parent) | |
| 3034 continue; | |
| 3035 #endif | |
| 3036 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 3037 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 3038 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 3039 if (!match(o1, o2, tempdecl, sc)) | |
| 3040 goto L1; | |
| 3041 } | |
| 3042 | |
| 3043 // It's a match | |
| 3044 inst = ti; | |
| 3045 parent = ti->parent; | |
| 3046 #if LOG | |
| 3047 printf("\tit's a match with instance %p\n", inst); | |
| 3048 #endif | |
| 3049 return; | |
| 3050 | |
| 3051 L1: | |
| 3052 ; | |
| 3053 } | |
| 3054 | |
| 3055 /* So, we need to implement 'this' instance. | |
| 3056 */ | |
| 3057 #if LOG | |
| 3058 printf("\timplement template instance '%s'\n", toChars()); | |
| 3059 #endif | |
| 3060 unsigned errorsave = global.errors; | |
| 3061 inst = this; | |
| 3062 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 3063 tempdecl->instances.push(this); | |
| 3064 parent = tempdecl->parent; | |
| 3065 //printf("parent = '%s'\n", parent->kind()); | |
| 3066 | |
| 3067 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 3068 | |
| 3069 #if 1 | |
| 3070 if (isnested) | |
| 3071 parent = isnested; | |
| 3072 #endif | |
| 3073 //printf("parent = '%s'\n", parent->kind()); | |
| 3074 | |
| 3075 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 3076 // will get called on the instance members | |
| 3077 #if 1 | |
| 3078 int dosemantic3 = 0; | |
| 3079 { Array *a; | |
|
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diff
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|
3080 |
|
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diff
changeset
|
3081 Scope *scx = sc; |
|
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diff
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|
3082 #if 0 |
|
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diff
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|
3083 for (scx = sc; scx; scx = scx->enclosing) |
|
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diff
changeset
|
3084 if (scx->scopesym) |
|
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Merged DMD 1.038
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diff
changeset
|
3085 break; |
|
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Merged DMD 1.038
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diff
changeset
|
3086 #endif |
|
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parents:
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diff
changeset
|
3087 |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
3088 //if (scx && scx->scopesym) printf("3: scx is %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
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parents:
664
diff
changeset
|
3089 if (scx && scx->scopesym && |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3090 scx->scopesym->members && !scx->scopesym->isTemplateMixin() && |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3091 /* The following test should really be if scx->module recursively |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3092 * imports itself. Because if it does, see bugzilla 2500. |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3093 */ |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3094 //scx->module == tempdecl->getModule() |
|
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Merged DMD 1.038
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parents:
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diff
changeset
|
3095 !scx->module->imports(scx->module) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3096 ) |
| 336 | 3097 { |
|
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Merged DMD 1.038
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parents:
664
diff
changeset
|
3098 //printf("\t1: adding to %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3099 a = scx->scopesym->members; |
| 336 | 3100 } |
| 3101 else | |
| 3102 { Module *m = sc->module->importedFrom; | |
| 3103 //printf("\t2: adding to module %s instead of module %s\n", m->toChars(), sc->module->toChars()); | |
| 3104 a = m->members; | |
| 3105 if (m->semanticdone >= 3) | |
| 3106 dosemantic3 = 1; | |
| 3107 } | |
| 3108 for (int i = 0; 1; i++) | |
| 3109 { | |
| 3110 if (i == a->dim) | |
| 3111 { | |
| 3112 a->push(this); | |
| 3113 break; | |
| 3114 } | |
| 3115 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 3116 break; | |
| 3117 } | |
| 3118 } | |
| 3119 #endif | |
| 3120 | |
| 3121 // Copy the syntax trees from the TemplateDeclaration | |
| 3122 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3123 | |
| 3124 // Create our own scope for the template parameters | |
| 3125 Scope *scope = tempdecl->scope; | |
| 3126 if (!scope) | |
| 3127 { | |
| 3128 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 3129 return; | |
| 3130 } | |
| 3131 | |
| 3132 #if LOG | |
| 3133 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3134 #endif | |
| 3135 argsym = new ScopeDsymbol(); | |
| 3136 argsym->parent = scope->parent; | |
| 3137 scope = scope->push(argsym); | |
| 3138 | |
| 3139 // Declare each template parameter as an alias for the argument type | |
| 3140 declareParameters(scope); | |
| 3141 | |
| 3142 // Add members of template instance to template instance symbol table | |
| 3143 // parent = scope->scopesym; | |
| 3144 symtab = new DsymbolTable(); | |
| 3145 int memnum = 0; | |
| 3146 for (int i = 0; i < members->dim; i++) | |
| 3147 { | |
| 3148 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3149 #if LOG | |
| 3150 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 3151 #endif | |
| 3152 memnum |= s->addMember(scope, this, memnum); | |
| 3153 } | |
| 3154 #if LOG | |
| 3155 printf("adding members done\n"); | |
| 3156 #endif | |
| 3157 | |
| 3158 /* See if there is only one member of template instance, and that | |
| 3159 * member has the same name as the template instance. | |
| 3160 * If so, this template instance becomes an alias for that member. | |
| 3161 */ | |
| 3162 //printf("members->dim = %d\n", members->dim); | |
| 3163 if (members->dim) | |
| 3164 { | |
| 3165 Dsymbol *s; | |
| 3166 if (Dsymbol::oneMembers(members, &s) && s) | |
| 3167 { | |
| 3168 //printf("s->kind = '%s'\n", s->kind()); | |
| 3169 //s->print(); | |
| 3170 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 3171 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 3172 { | |
| 3173 //printf("setting aliasdecl\n"); | |
| 3174 aliasdecl = new AliasDeclaration(loc, s->ident, s); | |
| 3175 } | |
| 3176 } | |
| 3177 } | |
| 3178 | |
| 3179 // Do semantic() analysis on template instance members | |
| 3180 #if LOG | |
| 3181 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3182 #endif | |
| 3183 Scope *sc2; | |
| 3184 sc2 = scope->push(this); | |
| 3185 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 3186 sc2->parent = /*isnested ? sc->parent :*/ this; | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3187 sc2->tinst = this; |
| 336 | 3188 |
| 3189 #if !IN_LLVM | |
| 3190 #if _WIN32 | |
| 3191 __try | |
| 3192 { | |
| 3193 #endif | |
| 3194 #endif | |
| 3195 for (int i = 0; i < members->dim; i++) | |
| 3196 { | |
| 3197 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3198 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 3199 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 3200 // if (isnested) | |
| 3201 // s->parent = sc->parent; | |
| 3202 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3203 s->semantic(sc2); | |
| 3204 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3205 sc2->module->runDeferredSemantic(); | |
| 3206 } | |
| 3207 #if !IN_LLVM | |
| 3208 #if _WIN32 | |
| 3209 } | |
| 3210 __except (__ehfilter(GetExceptionInformation())) | |
| 3211 { | |
| 3212 global.gag = 0; // ensure error message gets printed | |
| 3213 error("recursive expansion"); | |
| 3214 fatal(); | |
| 3215 } | |
| 3216 #endif | |
| 3217 #endif | |
| 3218 | |
| 3219 /* If any of the instantiation members didn't get semantic() run | |
| 3220 * on them due to forward references, we cannot run semantic2() | |
| 3221 * or semantic3() yet. | |
| 3222 */ | |
| 3223 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 3224 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 3225 | |
| 3226 if (sd->parent == this) | |
| 3227 goto Laftersemantic; | |
| 3228 } | |
| 3229 | |
| 3230 /* The problem is when to parse the initializer for a variable. | |
| 3231 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3232 * for initializers inside a function. | |
| 3233 */ | |
| 3234 // if (sc->parent->isFuncDeclaration()) | |
| 3235 | |
| 3236 /* BUG 782: this has problems if the classes this depends on | |
| 3237 * are forward referenced. Find a way to defer semantic() | |
| 3238 * on this template. | |
| 3239 */ | |
| 3240 semantic2(sc2); | |
| 3241 | |
| 3242 if (sc->func || dosemantic3) | |
| 3243 { | |
| 3244 semantic3(sc2); | |
| 3245 } | |
| 3246 | |
| 3247 Laftersemantic: | |
| 3248 sc2->pop(); | |
| 3249 | |
| 3250 scope->pop(); | |
| 3251 | |
| 3252 // Give additional context info if error occurred during instantiation | |
| 3253 if (global.errors != errorsave) | |
| 3254 { | |
| 3255 error("error instantiating"); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3256 if(tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3257 tinst->printInstantiationTrace(); |
| 336 | 3258 errors = 1; |
| 3259 if (global.gag) | |
| 3260 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 3261 } | |
| 3262 | |
| 3263 #if LOG | |
| 3264 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3265 #endif | |
| 3266 } | |
| 3267 | |
| 3268 | |
| 3269 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 3270 { | |
| 3271 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3272 if (semantictiargsdone) | |
| 3273 return; | |
| 3274 semantictiargsdone = 1; | |
| 3275 semanticTiargs(loc, sc, tiargs); | |
| 3276 } | |
| 3277 | |
| 3278 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 3279 { | |
| 3280 // Run semantic on each argument, place results in tiargs[] | |
| 3281 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3282 if (!tiargs) | |
| 3283 return; | |
| 3284 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3285 { | |
| 3286 Object *o = (Object *)tiargs->data[j]; | |
| 3287 Type *ta = isType(o); | |
| 3288 Expression *ea = isExpression(o); | |
| 3289 Dsymbol *sa = isDsymbol(o); | |
| 3290 | |
| 3291 //printf("1: tiargs->data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 3292 if (ta) | |
| 3293 { | |
| 3294 //printf("type %s\n", ta->toChars()); | |
| 3295 // It might really be an Expression or an Alias | |
| 3296 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 3297 if (ea) | |
| 3298 { | |
| 3299 ea = ea->semantic(sc); | |
| 3300 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3301 tiargs->data[j] = ea; | |
| 3302 } | |
| 3303 else if (sa) | |
| 3304 { tiargs->data[j] = sa; | |
| 3305 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 3306 if (d) | |
| 3307 { | |
| 3308 size_t dim = d->objects->dim; | |
| 3309 tiargs->remove(j); | |
| 3310 tiargs->insert(j, d->objects); | |
| 3311 j--; | |
| 3312 } | |
| 3313 } | |
| 3314 else if (ta) | |
| 3315 { | |
| 3316 if (ta->ty == Ttuple) | |
| 3317 { // Expand tuple | |
| 3318 TypeTuple *tt = (TypeTuple *)ta; | |
| 3319 size_t dim = tt->arguments->dim; | |
| 3320 tiargs->remove(j); | |
| 3321 if (dim) | |
| 3322 { tiargs->reserve(dim); | |
| 3323 for (size_t i = 0; i < dim; i++) | |
| 3324 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 3325 tiargs->insert(j + i, arg->type); | |
| 3326 } | |
| 3327 } | |
| 3328 j--; | |
| 3329 } | |
| 3330 else | |
| 3331 tiargs->data[j] = ta; | |
| 3332 } | |
| 3333 else | |
| 3334 { | |
| 3335 assert(global.errors); | |
| 3336 tiargs->data[j] = Type::terror; | |
| 3337 } | |
| 3338 } | |
| 3339 else if (ea) | |
| 3340 { | |
| 3341 if (!ea) | |
| 3342 { assert(global.errors); | |
| 3343 ea = new IntegerExp(0); | |
| 3344 } | |
| 3345 assert(ea); | |
| 3346 ea = ea->semantic(sc); | |
| 3347 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3348 tiargs->data[j] = ea; | |
| 3349 if (ea->op == TOKtype) | |
| 3350 tiargs->data[j] = ea->type; | |
| 3351 } | |
| 3352 else if (sa) | |
| 3353 { | |
| 3354 } | |
| 3355 else | |
| 3356 { | |
| 3357 assert(0); | |
| 3358 } | |
| 3359 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3360 } | |
| 3361 #if 0 | |
| 3362 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3363 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3364 { | |
| 3365 Object *o = (Object *)tiargs->data[j]; | |
| 3366 Type *ta = isType(o); | |
| 3367 Expression *ea = isExpression(o); | |
| 3368 Dsymbol *sa = isDsymbol(o); | |
| 3369 Tuple *va = isTuple(o); | |
| 3370 | |
| 3371 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3372 } | |
| 3373 #endif | |
| 3374 } | |
| 3375 | |
| 3376 /********************************************** | |
| 3377 * Find template declaration corresponding to template instance. | |
| 3378 */ | |
| 3379 | |
| 3380 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3381 { | |
| 3382 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3383 if (!tempdecl) | |
| 3384 { | |
| 3385 /* Given: | |
| 3386 * foo!( ... ) | |
| 3387 * figure out which TemplateDeclaration foo refers to. | |
| 3388 */ | |
| 3389 Dsymbol *s; | |
| 3390 Dsymbol *scopesym; | |
| 3391 Identifier *id; | |
| 3392 int i; | |
| 3393 | |
| 3394 id = name; | |
| 3395 s = sc->search(loc, id, &scopesym); | |
| 3396 if (!s) | |
| 3397 { error("identifier '%s' is not defined", id->toChars()); | |
| 3398 return NULL; | |
| 3399 } | |
| 3400 #if LOG | |
| 3401 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 3402 if (s->parent) | |
| 3403 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 3404 #endif | |
| 3405 withsym = scopesym->isWithScopeSymbol(); | |
| 3406 | |
| 3407 /* We might have found an alias within a template when | |
| 3408 * we really want the template. | |
| 3409 */ | |
| 3410 TemplateInstance *ti; | |
| 3411 if (s->parent && | |
| 3412 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3413 { | |
| 3414 if ( | |
| 3415 (ti->name == id || | |
| 3416 ti->toAlias()->ident == id) | |
| 3417 && | |
| 3418 ti->tempdecl) | |
| 3419 { | |
| 3420 /* This is so that one can refer to the enclosing | |
| 3421 * template, even if it has the same name as a member | |
| 3422 * of the template, if it has a !(arguments) | |
| 3423 */ | |
| 3424 tempdecl = ti->tempdecl; | |
| 3425 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3426 tempdecl = tempdecl->overroot; // then get the start | |
| 3427 s = tempdecl; | |
| 3428 } | |
| 3429 } | |
| 3430 | |
| 3431 s = s->toAlias(); | |
| 3432 | |
| 3433 /* It should be a TemplateDeclaration, not some other symbol | |
| 3434 */ | |
| 3435 tempdecl = s->isTemplateDeclaration(); | |
| 3436 if (!tempdecl) | |
| 3437 { | |
| 3438 if (!s->parent && global.errors) | |
| 3439 return NULL; | |
| 3440 if (!s->parent && s->getType()) | |
| 3441 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3442 if (!s2) | |
| 3443 { | |
| 3444 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3445 return NULL; | |
| 3446 } | |
| 3447 s = s2; | |
| 3448 } | |
| 3449 #ifdef DEBUG | |
| 3450 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3451 #endif | |
| 3452 //assert(s->parent); | |
| 3453 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3454 if (ti && | |
| 3455 (ti->name == id || | |
| 3456 ti->toAlias()->ident == id) | |
| 3457 && | |
| 3458 ti->tempdecl) | |
| 3459 { | |
| 3460 /* This is so that one can refer to the enclosing | |
| 3461 * template, even if it has the same name as a member | |
| 3462 * of the template, if it has a !(arguments) | |
| 3463 */ | |
| 3464 tempdecl = ti->tempdecl; | |
| 3465 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3466 tempdecl = tempdecl->overroot; // then get the start | |
| 3467 } | |
| 3468 else | |
| 3469 { | |
| 3470 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3471 return NULL; | |
| 3472 } | |
| 3473 } | |
| 3474 } | |
| 3475 else | |
| 3476 assert(tempdecl->isTemplateDeclaration()); | |
| 3477 return tempdecl; | |
| 3478 } | |
| 3479 | |
| 3480 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3481 { | |
| 3482 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3483 * name, look for the best match. | |
| 3484 */ | |
| 3485 TemplateDeclaration *td_ambig = NULL; | |
| 3486 TemplateDeclaration *td_best = NULL; | |
| 3487 MATCH m_best = MATCHnomatch; | |
| 3488 Objects dedtypes; | |
| 3489 | |
| 3490 #if LOG | |
| 3491 printf("TemplateInstance::findBestMatch()\n"); | |
| 3492 #endif | |
| 3493 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3494 { | |
| 3495 MATCH m; | |
| 3496 | |
| 3497 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3498 | |
| 3499 // If more arguments than parameters, | |
| 3500 // then this is no match. | |
| 3501 if (td->parameters->dim < tiargs->dim) | |
| 3502 { | |
| 3503 if (!td->isVariadic()) | |
| 3504 continue; | |
| 3505 } | |
| 3506 | |
| 3507 dedtypes.setDim(td->parameters->dim); | |
| 3508 dedtypes.zero(); | |
| 3509 if (!td->scope) | |
| 3510 { | |
| 3511 error("forward reference to template declaration %s", td->toChars()); | |
| 3512 return NULL; | |
| 3513 } | |
| 3514 m = td->matchWithInstance(this, &dedtypes, 0); | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3515 //printf("matchWithInstance = %d\n", m); |
| 336 | 3516 if (!m) // no match at all |
| 3517 continue; | |
| 3518 | |
| 3519 if (m < m_best) | |
| 3520 goto Ltd_best; | |
| 3521 if (m > m_best) | |
| 3522 goto Ltd; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3523 |
| 336 | 3524 { |
| 3525 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3526 int c1 = td->leastAsSpecialized(td_best); | |
| 3527 int c2 = td_best->leastAsSpecialized(td); | |
| 3528 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3529 | |
| 3530 if (c1 > c2) | |
| 3531 goto Ltd; | |
| 3532 else if (c1 < c2) | |
| 3533 goto Ltd_best; | |
| 3534 else | |
| 3535 goto Lambig; | |
| 3536 } | |
| 3537 | |
| 3538 Lambig: // td_best and td are ambiguous | |
| 3539 td_ambig = td; | |
| 3540 continue; | |
| 3541 | |
| 3542 Ltd_best: // td_best is the best match so far | |
| 3543 td_ambig = NULL; | |
| 3544 continue; | |
| 3545 | |
| 3546 Ltd: // td is the new best match | |
| 3547 td_ambig = NULL; | |
| 3548 td_best = td; | |
| 3549 m_best = m; | |
| 3550 tdtypes.setDim(dedtypes.dim); | |
| 3551 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3552 continue; | |
| 3553 } | |
| 3554 | |
| 3555 if (!td_best) | |
| 3556 { | |
| 3557 error("%s does not match any template declaration", toChars()); | |
| 3558 return NULL; | |
| 3559 } | |
| 3560 if (td_ambig) | |
| 3561 { | |
| 3562 error("%s matches more than one template declaration, %s and %s", | |
| 3563 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3564 } | |
| 3565 | |
| 3566 /* The best match is td_best | |
| 3567 */ | |
| 3568 tempdecl = td_best; | |
| 3569 | |
| 3570 #if 0 | |
| 3571 /* Cast any value arguments to be same type as value parameter | |
| 3572 */ | |
| 3573 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3574 { Object *o = (Object *)tiargs->data[i]; | |
| 3575 Expression *ea = isExpression(o); // value argument | |
| 3576 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3577 assert(tp); | |
| 3578 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3579 if (tvp) | |
| 3580 { | |
| 3581 assert(ea); | |
| 3582 ea = ea->castTo(tvp->valType); | |
| 3583 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3584 tiargs->data[i] = (Object *)ea; | |
| 3585 } | |
| 3586 } | |
| 3587 #endif | |
| 3588 | |
| 3589 #if LOG | |
| 3590 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3591 #endif | |
| 3592 return tempdecl; | |
| 3593 } | |
| 3594 | |
| 3595 | |
| 3596 /***************************************** | |
| 3597 * Determines if a TemplateInstance will need a nested | |
| 3598 * generation of the TemplateDeclaration. | |
| 3599 */ | |
| 3600 | |
| 3601 int TemplateInstance::isNested(Objects *args) | |
| 3602 { int nested = 0; | |
| 3603 //printf("TemplateInstance::isNested('%s')\n", tempdecl->ident->toChars()); | |
| 3604 | |
| 3605 /* A nested instance happens when an argument references a local | |
| 3606 * symbol that is on the stack. | |
| 3607 */ | |
| 3608 for (size_t i = 0; i < args->dim; i++) | |
| 3609 { Object *o = (Object *)args->data[i]; | |
| 3610 Expression *ea = isExpression(o); | |
| 3611 Dsymbol *sa = isDsymbol(o); | |
| 3612 Tuple *va = isTuple(o); | |
| 3613 if (ea) | |
| 3614 { | |
| 3615 if (ea->op == TOKvar) | |
| 3616 { | |
| 3617 sa = ((VarExp *)ea)->var; | |
| 3618 goto Lsa; | |
| 3619 } | |
| 3620 if (ea->op == TOKfunction) | |
| 3621 { | |
| 3622 sa = ((FuncExp *)ea)->fd; | |
| 3623 goto Lsa; | |
| 3624 } | |
| 3625 } | |
| 3626 else if (sa) | |
| 3627 { | |
| 3628 Lsa: | |
| 3629 Declaration *d = sa->isDeclaration(); | |
| 3630 if (d && !d->isDataseg() && | |
| 3631 #if DMDV2 | |
| 3632 !(d->storage_class & STCmanifest) && | |
| 3633 #endif | |
| 3634 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && | |
| 3635 !isTemplateMixin()) | |
| 3636 { | |
| 3637 // if module level template | |
| 3638 if (tempdecl->toParent()->isModule()) | |
| 3639 { Dsymbol *dparent = d->toParent(); | |
| 3640 if (!isnested) | |
| 3641 isnested = dparent; | |
| 3642 else if (isnested != dparent) | |
| 3643 { | |
| 3644 /* Select the more deeply nested of the two. | |
| 3645 * Error if one is not nested inside the other. | |
| 3646 */ | |
| 3647 for (Dsymbol *p = isnested; p; p = p->parent) | |
| 3648 { | |
| 3649 if (p == dparent) | |
| 3650 goto L1; // isnested is most nested | |
| 3651 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3652 for (Dsymbol *p = dparent; p; p = p->parent) |
| 336 | 3653 { |
| 3654 if (p == isnested) | |
| 3655 { isnested = dparent; | |
| 3656 goto L1; // dparent is most nested | |
| 3657 } | |
| 3658 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3659 error("%s is nested in both %s and %s", |
|
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3660 toChars(), isnested->toChars(), dparent->toChars()); |
| 336 | 3661 } |
| 3662 L1: | |
| 3663 //printf("\tnested inside %s\n", isnested->toChars()); | |
| 3664 nested |= 1; | |
| 3665 } | |
| 3666 else | |
| 3667 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3668 } | |
| 3669 } | |
| 3670 else if (va) | |
| 3671 { | |
| 3672 nested |= isNested(&va->objects); | |
| 3673 } | |
| 3674 } | |
| 3675 return nested; | |
| 3676 } | |
| 3677 | |
| 3678 /**************************************** | |
| 3679 * This instance needs an identifier for name mangling purposes. | |
| 3680 * Create one by taking the template declaration name and adding | |
| 3681 * the type signature for it. | |
| 3682 */ | |
| 3683 | |
| 3684 Identifier *TemplateInstance::genIdent() | |
| 3685 { OutBuffer buf; | |
| 3686 char *id; | |
| 3687 Objects *args; | |
| 3688 | |
| 3689 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3690 id = tempdecl->ident->toChars(); | |
| 3691 buf.printf("__T%"PRIuSIZE"%s", strlen(id), id); | |
| 3692 args = tiargs; | |
| 3693 for (int i = 0; i < args->dim; i++) | |
| 3694 { Object *o = (Object *)args->data[i]; | |
| 3695 Type *ta = isType(o); | |
| 3696 Expression *ea = isExpression(o); | |
| 3697 Dsymbol *sa = isDsymbol(o); | |
| 3698 Tuple *va = isTuple(o); | |
| 3699 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3700 if (ta) | |
| 3701 { | |
| 3702 buf.writeByte('T'); | |
| 3703 if (ta->deco) | |
| 3704 buf.writestring(ta->deco); | |
| 3705 else | |
| 3706 { | |
| 3707 #ifdef DEBUG | |
| 3708 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3709 #endif | |
| 3710 assert(global.errors); | |
| 3711 } | |
| 3712 } | |
| 3713 else if (ea) | |
| 3714 { sinteger_t v; | |
| 3715 real_t r; | |
| 3716 | |
| 3717 if (ea->op == TOKvar) | |
| 3718 { | |
| 3719 sa = ((VarExp *)ea)->var; | |
| 3720 ea = NULL; | |
| 3721 goto Lsa; | |
| 3722 } | |
| 3723 if (ea->op == TOKfunction) | |
| 3724 { | |
| 3725 sa = ((FuncExp *)ea)->fd; | |
| 3726 ea = NULL; | |
| 3727 goto Lsa; | |
| 3728 } | |
| 3729 buf.writeByte('V'); | |
| 3730 if (ea->op == TOKtuple) | |
| 3731 { ea->error("tuple is not a valid template value argument"); | |
| 3732 continue; | |
| 3733 } | |
| 3734 #if 1 | |
| 3735 /* Use deco that matches what it would be for a function parameter | |
| 3736 */ | |
| 3737 buf.writestring(ea->type->deco); | |
| 3738 #else | |
| 3739 // Use type of parameter, not type of argument | |
| 3740 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3741 assert(tp); | |
| 3742 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3743 assert(tvp); | |
| 3744 buf.writestring(tvp->valType->deco); | |
| 3745 #endif | |
| 3746 ea->toMangleBuffer(&buf); | |
| 3747 } | |
| 3748 else if (sa) | |
| 3749 { | |
| 3750 Lsa: | |
| 3751 buf.writeByte('S'); | |
| 3752 Declaration *d = sa->isDeclaration(); | |
| 3753 if (d && !d->type->deco) | |
| 3754 error("forward reference of %s", d->toChars()); | |
| 3755 else | |
| 3756 { | |
| 3757 char *p = sa->mangle(); | |
| 3758 buf.printf("%"PRIuSIZE"%s", strlen(p), p); | |
| 3759 } | |
| 3760 } | |
| 3761 else if (va) | |
| 3762 { | |
| 3763 assert(i + 1 == args->dim); // must be last one | |
| 3764 args = &va->objects; | |
| 3765 i = -1; | |
| 3766 } | |
| 3767 else | |
| 3768 assert(0); | |
| 3769 } | |
| 3770 buf.writeByte('Z'); | |
| 3771 id = buf.toChars(); | |
| 3772 buf.data = NULL; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3773 //printf("\tgenIdent = %s\n", id); |
| 336 | 3774 return new Identifier(id, TOKidentifier); |
| 3775 } | |
| 3776 | |
| 3777 | |
| 3778 /**************************************************** | |
| 3779 * Declare parameters of template instance, initialize them with the | |
| 3780 * template instance arguments. | |
| 3781 */ | |
| 3782 | |
| 3783 void TemplateInstance::declareParameters(Scope *scope) | |
| 3784 { | |
| 3785 //printf("TemplateInstance::declareParameters()\n"); | |
| 3786 for (int i = 0; i < tdtypes.dim; i++) | |
| 3787 { | |
| 3788 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3789 //Object *o = (Object *)tiargs->data[i]; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3790 Object *o = (Object *)tdtypes.data[i]; // initializer for tp |
| 336 | 3791 |
| 3792 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3793 tempdecl->declareParameter(scope, tp, o); | |
| 3794 } | |
| 3795 } | |
| 3796 | |
| 3797 | |
| 3798 void TemplateInstance::semantic2(Scope *sc) | |
| 3799 { int i; | |
| 3800 | |
| 3801 if (semanticdone >= 2) | |
| 3802 return; | |
| 3803 semanticdone = 2; | |
| 3804 #if LOG | |
| 3805 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3806 #endif | |
| 3807 if (!errors && members) | |
| 3808 { | |
| 3809 sc = tempdecl->scope; | |
| 3810 assert(sc); | |
| 3811 sc = sc->push(argsym); | |
| 3812 sc = sc->push(this); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3813 sc->tinst = this; |
| 336 | 3814 for (i = 0; i < members->dim; i++) |
| 3815 { | |
| 3816 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3817 #if LOG | |
| 3818 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3819 #endif | |
| 3820 s->semantic2(sc); | |
| 3821 } | |
| 3822 sc = sc->pop(); | |
| 3823 sc->pop(); | |
| 3824 } | |
| 3825 #if LOG | |
| 3826 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3827 #endif | |
| 3828 } | |
| 3829 | |
| 3830 void TemplateInstance::semantic3(Scope *sc) | |
| 3831 { | |
| 3832 #if LOG | |
| 3833 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3834 #endif | |
| 3835 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3836 if (semanticdone >= 3) | |
| 3837 return; | |
| 3838 semanticdone = 3; | |
| 3839 if (!errors && members) | |
| 3840 { | |
| 3841 sc = tempdecl->scope; | |
| 3842 sc = sc->push(argsym); | |
| 3843 sc = sc->push(this); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3844 sc->tinst = this; |
| 336 | 3845 for (int i = 0; i < members->dim; i++) |
| 3846 { | |
| 3847 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3848 s->semantic3(sc); | |
| 3849 } | |
| 3850 sc = sc->pop(); | |
| 3851 sc->pop(); | |
| 3852 } | |
| 3853 } | |
| 3854 | |
| 3855 void TemplateInstance::toObjFile(int multiobj) | |
| 3856 { | |
| 3857 #if LOG | |
| 3858 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3859 #endif | |
| 3860 if (!errors && members) | |
| 3861 { | |
| 3862 if (multiobj) | |
| 3863 // Append to list of object files to be written later | |
| 3864 //obj_append(this); | |
| 3865 assert(0 && "multiobj"); | |
| 3866 else | |
| 3867 { | |
| 3868 for (int i = 0; i < members->dim; i++) | |
| 3869 { | |
| 3870 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3871 s->toObjFile(multiobj); | |
| 3872 } | |
| 3873 } | |
| 3874 } | |
| 3875 } | |
| 3876 | |
| 3877 void TemplateInstance::inlineScan() | |
| 3878 { | |
| 3879 #if LOG | |
| 3880 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3881 #endif | |
| 3882 if (!errors && members) | |
| 3883 { | |
| 3884 for (int i = 0; i < members->dim; i++) | |
| 3885 { | |
| 3886 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3887 s->inlineScan(); | |
| 3888 } | |
| 3889 } | |
| 3890 } | |
| 3891 | |
| 3892 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3893 { | |
| 3894 int i; | |
| 3895 | |
| 3896 Identifier *id = name; | |
| 3897 buf->writestring(id->toChars()); | |
| 3898 buf->writestring("!("); | |
| 3899 if (nest) | |
| 3900 buf->writestring("..."); | |
| 3901 else | |
| 3902 { | |
| 3903 nest++; | |
| 3904 Objects *args = tiargs; | |
| 3905 for (i = 0; i < args->dim; i++) | |
| 3906 { | |
| 3907 if (i) | |
| 3908 buf->writeByte(','); | |
| 3909 Object *oarg = (Object *)args->data[i]; | |
| 3910 ObjectToCBuffer(buf, hgs, oarg); | |
| 3911 } | |
| 3912 nest--; | |
| 3913 } | |
| 3914 buf->writeByte(')'); | |
| 3915 } | |
| 3916 | |
| 3917 | |
| 3918 Dsymbol *TemplateInstance::toAlias() | |
| 3919 { | |
| 3920 #if LOG | |
| 3921 printf("TemplateInstance::toAlias()\n"); | |
| 3922 #endif | |
| 3923 if (!inst) | |
| 3924 { error("cannot resolve forward reference"); | |
| 3925 return this; | |
| 3926 } | |
| 3927 | |
| 3928 if (inst != this) | |
| 3929 return inst->toAlias(); | |
| 3930 | |
| 3931 if (aliasdecl) | |
| 3932 return aliasdecl->toAlias(); | |
| 3933 | |
| 3934 return inst; | |
| 3935 } | |
| 3936 | |
| 3937 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 3938 { | |
| 3939 return aliasdecl; | |
| 3940 } | |
| 3941 | |
| 3942 const char *TemplateInstance::kind() | |
| 3943 { | |
| 3944 return "template instance"; | |
| 3945 } | |
| 3946 | |
| 3947 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 3948 { | |
| 3949 *ps = NULL; | |
| 3950 return TRUE; | |
| 3951 } | |
| 3952 | |
| 3953 char *TemplateInstance::toChars() | |
| 3954 { | |
| 3955 OutBuffer buf; | |
| 3956 HdrGenState hgs; | |
| 3957 char *s; | |
| 3958 | |
| 3959 toCBuffer(&buf, &hgs); | |
| 3960 s = buf.toChars(); | |
| 3961 buf.data = NULL; | |
| 3962 return s; | |
| 3963 } | |
| 3964 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3965 void TemplateInstance::printInstantiationTrace() |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3966 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3967 if(global.gag) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3968 return; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3969 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3970 const int max_shown = 6; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3971 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3972 // determine instantiation depth |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3973 int n_instantiations = 1; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3974 TemplateInstance* cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3975 while(cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3976 ++n_instantiations; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3977 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3978 // show full trace only if it's short or verbose is on |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3979 if(n_instantiations <= max_shown || global.params.verbose) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3980 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3981 cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3982 while(cur) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3983 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3984 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3985 cur = cur->tinst; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3986 } |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3987 } |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3988 else |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3989 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3990 cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3991 size_t i = 0; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3992 for(; i < max_shown/2; ++i, cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3993 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3994 fprintf(stdmsg," ... (%d instantiations, -v to show) ...\n", n_instantiations - max_shown); |
|
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3995 for(; i < n_instantiations - max_shown + max_shown/2; ++i, cur = cur->tinst) |
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|
3996 {} |
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|
3997 for(; i < n_instantiations; ++i, cur = cur->tinst) |
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|
3998 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
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|
3999 } |
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4000 } |
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|
4001 |
| 336 | 4002 /* ======================== TemplateMixin ================================ */ |
| 4003 | |
| 4004 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 4005 Array *idents, Objects *tiargs) | |
| 4006 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 4007 { | |
| 4008 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 4009 this->ident = ident; | |
| 4010 this->tqual = tqual; | |
| 4011 this->idents = idents; | |
| 4012 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 4013 this->scope = NULL; | |
| 4014 } | |
| 4015 | |
| 4016 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 4017 { TemplateMixin *tm; | |
| 4018 | |
| 4019 Array *ids = new Array(); | |
| 4020 ids->setDim(idents->dim); | |
| 4021 for (int i = 0; i < idents->dim; i++) | |
| 4022 { // Matches TypeQualified::syntaxCopyHelper() | |
| 4023 Identifier *id = (Identifier *)idents->data[i]; | |
| 4024 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 4025 { | |
| 4026 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4027 | |
| 4028 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 4029 id = (Identifier *)ti; | |
| 4030 } | |
| 4031 ids->data[i] = id; | |
| 4032 } | |
| 4033 | |
| 4034 tm = new TemplateMixin(loc, ident, | |
| 4035 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 4036 ids, tiargs); | |
| 4037 TemplateInstance::syntaxCopy(tm); | |
| 4038 return tm; | |
| 4039 } | |
| 4040 | |
| 4041 void TemplateMixin::semantic(Scope *sc) | |
| 4042 { | |
| 4043 #if LOG | |
| 4044 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4045 fflush(stdout); | |
| 4046 #endif | |
| 4047 if (semanticdone && | |
| 4048 // This for when a class/struct contains mixin members, and | |
| 4049 // is done over because of forward references | |
| 4050 (!parent || !toParent()->isAggregateDeclaration())) | |
| 4051 { | |
| 4052 #if LOG | |
| 4053 printf("\tsemantic done\n"); | |
| 4054 #endif | |
| 4055 return; | |
| 4056 } | |
| 4057 if (!semanticdone) | |
| 4058 semanticdone = 1; | |
| 4059 #if LOG | |
| 4060 printf("\tdo semantic\n"); | |
| 4061 #endif | |
| 4062 | |
| 4063 #if !IN_LLVM | |
| 4064 // dont know what this is | |
| 4065 util_progress(); | |
| 4066 #endif | |
| 4067 | |
| 4068 Scope *scx = NULL; | |
| 4069 if (scope) | |
| 4070 { sc = scope; | |
| 4071 scx = scope; // save so we don't make redundant copies | |
| 4072 scope = NULL; | |
| 4073 } | |
| 4074 | |
| 4075 // Follow qualifications to find the TemplateDeclaration | |
| 4076 if (!tempdecl) | |
| 4077 { Dsymbol *s; | |
| 4078 int i; | |
| 4079 Identifier *id; | |
| 4080 | |
| 4081 if (tqual) | |
| 4082 { s = tqual->toDsymbol(sc); | |
| 4083 i = 0; | |
| 4084 } | |
| 4085 else | |
| 4086 { | |
| 4087 i = 1; | |
| 4088 id = (Identifier *)idents->data[0]; | |
| 4089 switch (id->dyncast()) | |
| 4090 { | |
| 4091 case DYNCAST_IDENTIFIER: | |
| 4092 s = sc->search(loc, id, NULL); | |
| 4093 break; | |
| 4094 | |
| 4095 case DYNCAST_DSYMBOL: | |
| 4096 { | |
| 4097 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4098 ti->semantic(sc); | |
| 4099 s = ti; | |
| 4100 break; | |
| 4101 } | |
| 4102 default: | |
| 4103 assert(0); | |
| 4104 } | |
| 4105 } | |
| 4106 | |
| 4107 for (; i < idents->dim; i++) | |
| 4108 { | |
| 4109 if (!s) | |
| 4110 break; | |
| 4111 id = (Identifier *)idents->data[i]; | |
| 4112 s = s->searchX(loc, sc, id); | |
| 4113 } | |
| 4114 if (!s) | |
| 4115 { | |
| 4116 error("is not defined"); | |
| 4117 inst = this; | |
| 4118 return; | |
| 4119 } | |
| 4120 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 4121 if (!tempdecl) | |
| 4122 { | |
| 4123 error("%s isn't a template", s->toChars()); | |
| 4124 inst = this; | |
| 4125 return; | |
| 4126 } | |
| 4127 } | |
| 4128 | |
| 4129 // Look for forward reference | |
| 4130 assert(tempdecl); | |
| 4131 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 4132 { | |
| 4133 if (!td->scope) | |
| 4134 { | |
| 4135 /* Cannot handle forward references if mixin is a struct member, | |
| 4136 * because addField must happen during struct's semantic, not | |
| 4137 * during the mixin semantic. | |
| 4138 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 4139 * semantic. | |
| 4140 */ | |
| 4141 semanticdone = 0; | |
| 4142 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 4143 if (ad) | |
| 4144 ad->sizeok = 2; | |
| 4145 else | |
| 4146 { | |
| 4147 // Forward reference | |
| 4148 //printf("forward reference - deferring\n"); | |
| 4149 scope = scx ? scx : new Scope(*sc); | |
| 4150 scope->setNoFree(); | |
| 4151 scope->module->addDeferredSemantic(this); | |
| 4152 } | |
| 4153 return; | |
| 4154 } | |
| 4155 } | |
| 4156 | |
| 4157 // Run semantic on each argument, place results in tiargs[] | |
| 4158 semanticTiargs(sc); | |
| 4159 | |
| 4160 tempdecl = findBestMatch(sc); | |
| 4161 if (!tempdecl) | |
| 4162 { inst = this; | |
| 4163 return; // error recovery | |
| 4164 } | |
| 4165 | |
| 4166 if (!ident) | |
| 4167 ident = genIdent(); | |
| 4168 | |
| 4169 inst = this; | |
| 4170 parent = sc->parent; | |
| 4171 | |
| 4172 /* Detect recursive mixin instantiations. | |
| 4173 */ | |
| 4174 for (Dsymbol *s = parent; s; s = s->parent) | |
| 4175 { | |
| 4176 //printf("\ts = '%s'\n", s->toChars()); | |
| 4177 TemplateMixin *tm = s->isTemplateMixin(); | |
| 4178 if (!tm || tempdecl != tm->tempdecl) | |
| 4179 continue; | |
| 4180 | |
| 4181 /* Different argument list lengths happen with variadic args | |
| 4182 */ | |
| 4183 if (tiargs->dim != tm->tiargs->dim) | |
| 4184 continue; | |
| 4185 | |
| 4186 for (int i = 0; i < tiargs->dim; i++) | |
| 4187 { Object *o = (Object *)tiargs->data[i]; | |
| 4188 Type *ta = isType(o); | |
| 4189 Expression *ea = isExpression(o); | |
| 4190 Dsymbol *sa = isDsymbol(o); | |
| 4191 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 4192 if (ta) | |
| 4193 { | |
| 4194 Type *tmta = isType(tmo); | |
| 4195 if (!tmta) | |
| 4196 goto Lcontinue; | |
| 4197 if (!ta->equals(tmta)) | |
| 4198 goto Lcontinue; | |
| 4199 } | |
| 4200 else if (ea) | |
| 4201 { Expression *tme = isExpression(tmo); | |
| 4202 if (!tme || !ea->equals(tme)) | |
| 4203 goto Lcontinue; | |
| 4204 } | |
| 4205 else if (sa) | |
| 4206 { | |
| 4207 Dsymbol *tmsa = isDsymbol(tmo); | |
| 4208 if (sa != tmsa) | |
| 4209 goto Lcontinue; | |
| 4210 } | |
| 4211 else | |
| 4212 assert(0); | |
| 4213 } | |
| 4214 error("recursive mixin instantiation"); | |
| 4215 return; | |
| 4216 | |
| 4217 Lcontinue: | |
| 4218 continue; | |
| 4219 } | |
| 4220 | |
| 4221 // Copy the syntax trees from the TemplateDeclaration | |
| 4222 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 4223 if (!members) | |
| 4224 return; | |
| 4225 | |
| 4226 symtab = new DsymbolTable(); | |
| 4227 | |
| 4228 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 4229 { | |
| 4230 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 4231 if (sds) | |
| 4232 { | |
| 4233 sds->importScope(this, PROTpublic); | |
| 4234 break; | |
| 4235 } | |
| 4236 } | |
| 4237 | |
| 4238 #if LOG | |
| 4239 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 4240 #endif | |
| 4241 Scope *scy = sc; | |
| 4242 scy = sc->push(this); | |
| 4243 scy->parent = this; | |
| 4244 | |
| 4245 argsym = new ScopeDsymbol(); | |
| 4246 argsym->parent = scy->parent; | |
| 4247 Scope *scope = scy->push(argsym); | |
| 4248 | |
| 4249 unsigned errorsave = global.errors; | |
| 4250 | |
| 4251 // Declare each template parameter as an alias for the argument type | |
| 4252 declareParameters(scope); | |
| 4253 | |
| 4254 // Add members to enclosing scope, as well as this scope | |
| 4255 for (unsigned i = 0; i < members->dim; i++) | |
| 4256 { Dsymbol *s; | |
| 4257 | |
| 4258 s = (Dsymbol *)members->data[i]; | |
| 4259 s->addMember(scope, this, i); | |
| 4260 //sc->insert(s); | |
| 4261 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 4262 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 4263 } | |
| 4264 | |
| 4265 // Do semantic() analysis on template instance members | |
| 4266 #if LOG | |
| 4267 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 4268 #endif | |
| 4269 Scope *sc2; | |
| 4270 sc2 = scope->push(this); | |
| 4271 sc2->offset = sc->offset; | |
| 4272 for (int i = 0; i < members->dim; i++) | |
| 4273 { | |
| 4274 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4275 s->semantic(sc2); | |
| 4276 } | |
| 4277 sc->offset = sc2->offset; | |
| 4278 | |
| 4279 /* The problem is when to parse the initializer for a variable. | |
| 4280 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 4281 * for initializers inside a function. | |
| 4282 */ | |
| 4283 // if (sc->parent->isFuncDeclaration()) | |
| 4284 | |
| 4285 semantic2(sc2); | |
| 4286 | |
| 4287 if (sc->func) | |
| 4288 { | |
| 4289 semantic3(sc2); | |
| 4290 } | |
| 4291 | |
| 4292 // Give additional context info if error occurred during instantiation | |
| 4293 if (global.errors != errorsave) | |
| 4294 { | |
| 4295 error("error instantiating"); | |
| 4296 } | |
| 4297 | |
| 4298 sc2->pop(); | |
| 4299 | |
| 4300 scope->pop(); | |
| 4301 | |
| 4302 // if (!isAnonymous()) | |
| 4303 { | |
| 4304 scy->pop(); | |
| 4305 } | |
| 4306 #if LOG | |
| 4307 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4308 #endif | |
| 4309 } | |
| 4310 | |
| 4311 void TemplateMixin::semantic2(Scope *sc) | |
| 4312 { int i; | |
| 4313 | |
| 4314 if (semanticdone >= 2) | |
| 4315 return; | |
| 4316 semanticdone = 2; | |
| 4317 #if LOG | |
| 4318 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4319 #endif | |
| 4320 if (members) | |
| 4321 { | |
| 4322 assert(sc); | |
| 4323 sc = sc->push(argsym); | |
| 4324 sc = sc->push(this); | |
| 4325 for (i = 0; i < members->dim; i++) | |
| 4326 { | |
| 4327 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4328 #if LOG | |
| 4329 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 4330 #endif | |
| 4331 s->semantic2(sc); | |
| 4332 } | |
| 4333 sc = sc->pop(); | |
| 4334 sc->pop(); | |
| 4335 } | |
| 4336 #if LOG | |
| 4337 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4338 #endif | |
| 4339 } | |
| 4340 | |
| 4341 void TemplateMixin::semantic3(Scope *sc) | |
| 4342 { int i; | |
| 4343 | |
| 4344 if (semanticdone >= 3) | |
| 4345 return; | |
| 4346 semanticdone = 3; | |
| 4347 #if LOG | |
| 4348 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 4349 #endif | |
| 4350 if (members) | |
| 4351 { | |
| 4352 sc = sc->push(argsym); | |
| 4353 sc = sc->push(this); | |
| 4354 for (i = 0; i < members->dim; i++) | |
| 4355 { | |
| 4356 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4357 s->semantic3(sc); | |
| 4358 } | |
| 4359 sc = sc->pop(); | |
| 4360 sc->pop(); | |
| 4361 } | |
| 4362 } | |
| 4363 | |
| 4364 void TemplateMixin::inlineScan() | |
| 4365 { | |
| 4366 TemplateInstance::inlineScan(); | |
| 4367 } | |
| 4368 | |
| 4369 const char *TemplateMixin::kind() | |
| 4370 { | |
| 4371 return "mixin"; | |
| 4372 } | |
| 4373 | |
| 4374 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 4375 { | |
| 4376 return Dsymbol::oneMember(ps); | |
| 4377 } | |
| 4378 | |
| 4379 int TemplateMixin::hasPointers() | |
| 4380 { | |
| 4381 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 4382 for (size_t i = 0; i < members->dim; i++) | |
| 4383 { | |
| 4384 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4385 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 4386 if (s->hasPointers()) | |
| 4387 { | |
| 4388 return 1; | |
| 4389 } | |
| 4390 } | |
| 4391 return 0; | |
| 4392 } | |
| 4393 | |
| 4394 char *TemplateMixin::toChars() | |
| 4395 { | |
| 4396 OutBuffer buf; | |
| 4397 HdrGenState hgs; | |
| 4398 char *s; | |
| 4399 | |
| 4400 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 4401 s = buf.toChars(); | |
| 4402 buf.data = NULL; | |
| 4403 return s; | |
| 4404 } | |
| 4405 | |
| 4406 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4407 { | |
| 4408 buf->writestring("mixin "); | |
| 4409 | |
| 4410 for (int i = 0; i < idents->dim; i++) | |
| 4411 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4412 | |
| 4413 if (i) | |
| 4414 buf->writeByte('.'); | |
| 4415 buf->writestring(id->toChars()); | |
| 4416 } | |
| 4417 buf->writestring("!("); | |
| 4418 if (tiargs) | |
| 4419 { | |
| 4420 for (int i = 0; i < tiargs->dim; i++) | |
| 4421 { if (i) | |
| 4422 buf->writebyte(','); | |
| 4423 Object *oarg = (Object *)tiargs->data[i]; | |
| 4424 Type *t = isType(oarg); | |
| 4425 Expression *e = isExpression(oarg); | |
| 4426 Dsymbol *s = isDsymbol(oarg); | |
| 4427 if (t) | |
| 4428 t->toCBuffer(buf, NULL, hgs); | |
| 4429 else if (e) | |
| 4430 e->toCBuffer(buf, hgs); | |
| 4431 else if (s) | |
| 4432 { | |
| 4433 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4434 buf->writestring(p); | |
| 4435 } | |
| 4436 else if (!oarg) | |
| 4437 { | |
| 4438 buf->writestring("NULL"); | |
| 4439 } | |
| 4440 else | |
| 4441 { | |
| 4442 assert(0); | |
| 4443 } | |
| 4444 } | |
| 4445 } | |
| 4446 buf->writebyte(')'); | |
| 4447 if (ident) | |
| 4448 { | |
| 4449 buf->writebyte(' '); | |
| 4450 buf->writestring(ident->toChars()); | |
| 4451 } | |
| 4452 buf->writebyte(';'); | |
| 4453 buf->writenl(); | |
| 4454 } | |
| 4455 | |
| 4456 | |
| 4457 void TemplateMixin::toObjFile(int multiobj) | |
| 4458 { | |
| 4459 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4460 TemplateInstance::toObjFile(multiobj); | |
| 4461 } | |
| 4462 |