Mercurial > projects > ldc
annotate dmd/template.c @ 139:0ab29b838084 trunk
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
Fixed: tango.io.Console seems to be working now.
| author | lindquist |
|---|---|
| date | Tue, 22 Jan 2008 00:01:16 +0100 |
| parents | a7dfa0ed966c |
| children | 5acec6b2eef8 |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 // Compiler implementation of the D programming language | |
|
139
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3 // Copyright (c) 1999-2008 by Digital Mars |
| 1 | 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 _WIN32 | |
| 17 #include <windows.h> | |
| 18 long __cdecl __ehfilter(LPEXCEPTION_POINTERS ep); | |
| 19 #endif | |
| 20 | |
| 21 #include "root.h" | |
| 22 #include "mem.h" | |
| 23 #include "stringtable.h" | |
| 24 | |
| 25 #include "mtype.h" | |
| 26 #include "template.h" | |
| 27 #include "init.h" | |
| 28 #include "expression.h" | |
| 29 #include "scope.h" | |
| 30 #include "module.h" | |
| 31 #include "aggregate.h" | |
| 32 #include "declaration.h" | |
| 33 #include "dsymbol.h" | |
| 34 #include "mars.h" | |
| 35 #include "dsymbol.h" | |
| 36 #include "identifier.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 | |
| 92 | 78 |
| 1 | 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 /* A proper implementation of the various equals() overrides | |
| 135 * should make it possible to just do o1->equals(o2), but | |
| 136 * we'll do that another day. | |
| 137 */ | |
| 138 | |
| 139 if (t1) | |
| 140 { | |
| 141 /* if t1 is an instance of ti, then give error | |
| 142 * about recursive expansions. | |
| 143 */ | |
| 144 Dsymbol *s = t1->toDsymbol(sc); | |
| 145 if (s && s->parent) | |
| 146 { TemplateInstance *ti1 = s->parent->isTemplateInstance(); | |
| 147 if (ti1 && ti1->tempdecl == tempdecl) | |
| 148 { | |
| 149 for (Scope *sc1 = sc; sc1; sc1 = sc1->enclosing) | |
| 150 { | |
| 151 if (sc1->scopesym == ti1) | |
| 152 { | |
| 153 error("recursive template expansion for template argument %s", t1->toChars()); | |
| 154 return 1; // fake a match | |
| 155 } | |
| 156 } | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 if (!t2 || !t1->equals(t2)) | |
| 161 goto L1; | |
| 162 } | |
| 163 else if (e1) | |
| 164 { | |
| 165 #if 0 | |
| 166 if (e1 && e2) | |
| 167 { | |
| 168 printf("match %d\n", e1->equals(e2)); | |
| 169 e1->print(); | |
| 170 e2->print(); | |
| 171 } | |
| 172 #endif | |
| 173 if (!e2 || !e1->equals(e2)) | |
| 174 goto L1; | |
| 175 } | |
| 176 else if (s1) | |
| 177 { | |
| 178 //printf("%p %s, %p %s\n", s1, s1->toChars(), s2, s2->toChars()); | |
| 179 if (!s2 || !s1->equals(s2) || s1->parent != s2->parent) | |
| 180 goto L1; | |
| 181 } | |
| 182 else if (v1) | |
| 183 { | |
| 184 if (!v2) | |
| 185 goto L1; | |
| 186 if (v1->objects.dim != v2->objects.dim) | |
| 187 goto L1; | |
| 188 for (size_t i = 0; i < v1->objects.dim; i++) | |
| 189 { | |
| 190 if (!match((Object *)v1->objects.data[i], | |
| 191 (Object *)v2->objects.data[i], | |
| 192 tempdecl, sc)) | |
| 193 goto L1; | |
| 194 } | |
| 195 } | |
| 196 return 1; // match | |
| 197 L1: | |
| 198 return 0; // nomatch; | |
| 199 } | |
| 200 | |
| 201 /**************************************** | |
| 202 */ | |
| 203 | |
| 204 void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg) | |
| 205 { | |
| 92 | 206 //printf("ObjectToCBuffer()\n"); |
| 1 | 207 Type *t = isType(oarg); |
| 208 Expression *e = isExpression(oarg); | |
| 209 Dsymbol *s = isDsymbol(oarg); | |
| 210 Tuple *v = isTuple(oarg); | |
| 211 if (t) | |
| 92 | 212 { //printf("\tt: %s ty = %d\n", t->toChars(), t->ty); |
| 1 | 213 t->toCBuffer(buf, NULL, hgs); |
| 92 | 214 } |
| 1 | 215 else if (e) |
| 216 e->toCBuffer(buf, hgs); | |
| 217 else if (s) | |
| 218 { | |
| 219 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 220 buf->writestring(p); | |
| 221 } | |
| 222 else if (v) | |
| 223 { | |
| 224 Objects *args = &v->objects; | |
| 225 for (size_t i = 0; i < args->dim; i++) | |
| 226 { | |
| 227 if (i) | |
| 228 buf->writeByte(','); | |
| 229 Object *o = (Object *)args->data[i]; | |
| 230 ObjectToCBuffer(buf, hgs, o); | |
| 231 } | |
| 232 } | |
| 233 else if (!oarg) | |
| 234 { | |
| 235 buf->writestring("NULL"); | |
| 236 } | |
| 237 else | |
| 238 { | |
| 239 #ifdef DEBUG | |
| 240 printf("bad Object = %p\n", oarg); | |
| 241 #endif | |
| 242 assert(0); | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 | |
| 247 | |
| 248 /* ======================== TemplateDeclaration ============================= */ | |
| 249 | |
| 250 TemplateDeclaration::TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters, Array *decldefs) | |
| 251 : ScopeDsymbol(id) | |
| 252 { | |
| 253 #if LOG | |
| 254 printf("TemplateDeclaration(this = %p, id = '%s')\n", this, id->toChars()); | |
| 255 #endif | |
| 256 #if 0 | |
| 257 if (parameters) | |
| 258 for (int i = 0; i < parameters->dim; i++) | |
| 259 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 260 //printf("\tparameter[%d] = %p\n", i, tp); | |
| 261 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 262 | |
| 263 if (ttp) | |
| 264 { | |
| 265 printf("\tparameter[%d] = %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 266 } | |
| 267 } | |
| 268 #endif | |
| 269 this->loc = loc; | |
| 270 this->parameters = parameters; | |
| 271 this->members = decldefs; | |
| 272 this->overnext = NULL; | |
| 273 this->overroot = NULL; | |
| 274 this->scope = NULL; | |
| 275 this->onemember = NULL; | |
| 276 } | |
| 277 | |
| 278 Dsymbol *TemplateDeclaration::syntaxCopy(Dsymbol *) | |
| 279 { | |
| 280 //printf("TemplateDeclaration::syntaxCopy()\n"); | |
| 281 TemplateDeclaration *td; | |
| 282 TemplateParameters *p; | |
| 283 Array *d; | |
| 284 | |
| 285 p = NULL; | |
| 286 if (parameters) | |
| 287 { | |
| 288 p = new TemplateParameters(); | |
| 289 p->setDim(parameters->dim); | |
| 290 for (int i = 0; i < p->dim; i++) | |
| 291 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 292 p->data[i] = (void *)tp->syntaxCopy(); | |
| 293 } | |
| 294 } | |
| 295 d = Dsymbol::arraySyntaxCopy(members); | |
| 296 td = new TemplateDeclaration(loc, ident, p, d); | |
| 297 return td; | |
| 298 } | |
| 299 | |
| 300 void TemplateDeclaration::semantic(Scope *sc) | |
| 301 { | |
| 302 #if LOG | |
| 303 printf("TemplateDeclaration::semantic(this = %p, id = '%s')\n", this, ident->toChars()); | |
| 304 #endif | |
| 305 if (scope) | |
| 306 return; // semantic() already run | |
| 307 | |
| 308 if (sc->func) | |
| 309 { | |
| 310 error("cannot declare template at function scope %s", sc->func->toChars()); | |
| 311 } | |
| 312 | |
| 313 if (/*global.params.useArrayBounds &&*/ sc->module) | |
| 314 { | |
| 315 // Generate this function as it may be used | |
| 316 // when template is instantiated in other modules | |
| 317 sc->module->toModuleArray(); | |
| 318 } | |
| 319 | |
| 320 if (/*global.params.useAssert &&*/ sc->module) | |
| 321 { | |
| 322 // Generate this function as it may be used | |
| 323 // when template is instantiated in other modules | |
| 324 sc->module->toModuleAssert(); | |
| 325 } | |
| 326 | |
| 327 /* Remember Scope for later instantiations, but make | |
| 328 * a copy since attributes can change. | |
| 329 */ | |
| 330 this->scope = new Scope(*sc); | |
| 331 this->scope->setNoFree(); | |
| 332 | |
| 333 // Set up scope for parameters | |
| 334 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 335 paramsym->parent = sc->parent; | |
| 336 Scope *paramscope = sc->push(paramsym); | |
| 337 paramscope->parameterSpecialization = 1; | |
| 338 | |
| 339 for (int i = 0; i < parameters->dim; i++) | |
| 340 { | |
| 341 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 342 | |
| 343 tp->declareParameter(paramscope); | |
| 344 } | |
| 345 | |
| 346 for (int i = 0; i < parameters->dim; i++) | |
| 347 { | |
| 348 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 349 | |
| 350 tp->semantic(paramscope); | |
| 351 } | |
| 352 | |
| 353 paramscope->pop(); | |
| 354 | |
| 355 if (members) | |
| 356 { | |
| 357 Dsymbol *s; | |
| 358 if (Dsymbol::oneMembers(members, &s)) | |
| 359 { | |
| 360 if (s && s->ident && s->ident->equals(ident)) | |
| 361 { | |
| 362 onemember = s; | |
| 363 s->parent = this; | |
| 364 } | |
| 365 } | |
| 366 } | |
| 367 | |
| 368 /* BUG: should check: | |
| 369 * o no virtual functions or non-static data members of classes | |
| 370 */ | |
| 371 } | |
| 372 | |
| 373 char *TemplateDeclaration::kind() | |
| 374 { | |
| 375 return (onemember && onemember->isAggregateDeclaration()) | |
| 376 ? onemember->kind() | |
| 377 : (char *)"template"; | |
| 378 } | |
| 379 | |
| 380 /********************************** | |
| 381 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 382 * Return !=0 if successful; i.e. no conflict. | |
| 383 */ | |
| 384 | |
| 385 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 386 { | |
| 387 TemplateDeclaration **pf; | |
| 388 TemplateDeclaration *f; | |
| 389 | |
| 390 #if LOG | |
| 391 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 392 #endif | |
| 393 f = s->isTemplateDeclaration(); | |
| 394 if (!f) | |
| 395 return FALSE; | |
| 396 TemplateDeclaration *pthis = this; | |
| 397 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 398 { | |
| 399 #if 0 | |
| 400 // Conflict if TemplateParameter's match | |
| 401 // Will get caught anyway later with TemplateInstance, but | |
| 402 // should check it now. | |
| 403 TemplateDeclaration *f2 = *pf; | |
| 404 | |
| 405 if (f->parameters->dim != f2->parameters->dim) | |
| 406 goto Lcontinue; | |
| 407 | |
| 408 for (int i = 0; i < f->parameters->dim; i++) | |
| 409 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 410 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 411 | |
| 412 if (!p1->overloadMatch(p2)) | |
| 413 goto Lcontinue; | |
| 414 } | |
| 415 | |
| 416 #if LOG | |
| 417 printf("\tfalse: conflict\n"); | |
| 418 #endif | |
| 419 return FALSE; | |
| 420 | |
| 421 Lcontinue: | |
| 422 ; | |
| 423 #endif | |
| 424 } | |
| 425 | |
| 426 f->overroot = this; | |
| 427 *pf = f; | |
| 428 #if LOG | |
| 429 printf("\ttrue: no conflict\n"); | |
| 430 #endif | |
| 431 return TRUE; | |
| 432 } | |
| 433 | |
| 434 /*************************************** | |
| 435 * Given that ti is an instance of this TemplateDeclaration, | |
| 436 * deduce the types of the parameters to this, and store | |
| 437 * those deduced types in dedtypes[]. | |
| 438 * Input: | |
| 439 * flag 1: don't do semantic() because of dummy types | |
| 440 * Output: | |
| 441 * dedtypes deduced arguments | |
| 442 * Return match level. | |
| 443 */ | |
| 444 | |
| 445 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 446 Objects *dedtypes, int flag) | |
| 447 { MATCH m; | |
| 448 int dedtypes_dim = dedtypes->dim; | |
| 449 | |
| 450 #if LOG | |
| 92 | 451 printf("+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); |
| 1 | 452 #endif |
| 453 | |
| 454 #if 0 | |
| 455 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 456 if (ti->tiargs->dim) | |
| 457 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 458 ti->tiargs->dim, | |
| 459 ti->tiargs->data[0]); | |
| 460 #endif | |
| 461 dedtypes->zero(); | |
| 462 | |
| 463 int parameters_dim = parameters->dim; | |
| 464 int variadic = isVariadic() != NULL; | |
| 465 | |
| 466 // If more arguments than parameters, no match | |
| 467 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 468 { | |
| 469 #if LOG | |
| 470 printf(" no match: more arguments than parameters\n"); | |
| 471 #endif | |
| 472 return MATCHnomatch; | |
| 473 } | |
| 474 | |
| 475 assert(dedtypes_dim == parameters_dim); | |
| 476 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 477 | |
| 478 // Set up scope for parameters | |
| 479 assert((size_t)scope > 0x10000); | |
| 480 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 481 paramsym->parent = scope->parent; | |
| 482 Scope *paramscope = scope->push(paramsym); | |
| 483 | |
| 484 // Attempt type deduction | |
| 485 m = MATCHexact; | |
| 486 for (int i = 0; i < dedtypes_dim; i++) | |
| 487 { MATCH m2; | |
| 488 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 489 Declaration *sparam; | |
| 490 | |
| 491 //printf("\targument [%d]\n", i); | |
| 492 #if 0 | |
| 92 | 493 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); |
| 1 | 494 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); |
| 495 if (ttp) | |
| 496 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 497 #endif | |
| 498 | |
| 499 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 92 | 500 //printf("\tm2 = %d\n", m2); |
| 1 | 501 |
| 502 if (m2 == MATCHnomatch) | |
| 503 { | |
| 504 #if 0 | |
| 505 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 506 #endif | |
| 507 goto Lnomatch; | |
| 508 } | |
| 509 | |
| 510 if (m2 < m) | |
| 511 m = m2; | |
| 512 | |
| 513 if (!flag) | |
| 514 sparam->semantic(paramscope); | |
| 515 if (!paramscope->insert(sparam)) | |
| 516 goto Lnomatch; | |
| 517 } | |
| 518 | |
| 519 if (!flag) | |
| 520 { | |
| 521 // Any parameter left without a type gets the type of its corresponding arg | |
| 522 for (int i = 0; i < dedtypes_dim; i++) | |
| 523 { | |
| 524 if (!dedtypes->data[i]) | |
| 525 { assert(i < ti->tiargs->dim); | |
| 526 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 527 } | |
| 528 } | |
| 529 } | |
| 530 | |
| 531 #if 0 | |
| 532 // Print out the results | |
| 533 printf("--------------------------\n"); | |
| 534 printf("template %s\n", toChars()); | |
| 535 printf("instance %s\n", ti->toChars()); | |
| 536 if (m) | |
| 537 { | |
| 538 for (int i = 0; i < dedtypes_dim; i++) | |
| 539 { | |
| 540 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 541 Object *oarg; | |
| 542 | |
| 543 printf(" [%d]", i); | |
| 544 | |
| 545 if (i < ti->tiargs->dim) | |
| 546 oarg = (Object *)ti->tiargs->data[i]; | |
| 547 else | |
| 548 oarg = NULL; | |
| 549 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 550 } | |
| 551 } | |
| 552 else | |
| 553 goto Lnomatch; | |
| 554 #endif | |
| 555 | |
| 556 #if LOG | |
| 557 printf(" match = %d\n", m); | |
| 558 #endif | |
| 559 goto Lret; | |
| 560 | |
| 561 Lnomatch: | |
| 562 #if LOG | |
| 563 printf(" no match\n"); | |
| 564 #endif | |
| 565 m = MATCHnomatch; | |
| 566 | |
| 567 Lret: | |
| 568 paramscope->pop(); | |
| 569 #if LOG | |
| 570 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); | |
| 571 #endif | |
| 572 return m; | |
| 573 } | |
| 574 | |
| 575 /******************************************** | |
| 576 * Determine partial specialization order of 'this' vs td2. | |
| 577 * Returns: | |
| 578 * 1 this is at least as specialized as td2 | |
| 579 * 0 td2 is more specialized than this | |
| 580 */ | |
| 581 | |
| 582 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 583 { | |
| 584 /* This works by taking the template parameters to this template | |
| 585 * declaration and feeding them to td2 as if it were a template | |
| 586 * instance. | |
| 587 * If it works, then this template is at least as specialized | |
| 588 * as td2. | |
| 589 */ | |
| 590 | |
| 92 | 591 TemplateInstance ti(0, ident); // create dummy template instance |
| 1 | 592 Objects dedtypes; |
| 593 | |
| 594 #define LOG_LEASTAS 0 | |
| 595 | |
| 596 #if LOG_LEASTAS | |
| 597 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 598 #endif | |
| 599 | |
| 600 // Set type arguments to dummy template instance to be types | |
| 601 // generated from the parameters to this template declaration | |
| 602 ti.tiargs = new Objects(); | |
| 603 ti.tiargs->setDim(parameters->dim); | |
| 604 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 605 { | |
| 606 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 607 | |
| 608 void *p = tp->dummyArg(); | |
| 609 if (p) | |
| 610 ti.tiargs->data[i] = p; | |
| 611 else | |
| 612 ti.tiargs->setDim(i); | |
| 613 } | |
| 614 | |
| 615 // Temporary Array to hold deduced types | |
| 616 //dedtypes.setDim(parameters->dim); | |
| 617 dedtypes.setDim(td2->parameters->dim); | |
| 618 | |
| 619 // Attempt a type deduction | |
| 620 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 621 { | |
| 622 /* A non-variadic template is more specialized than a | |
| 623 * variadic one. | |
| 624 */ | |
| 625 if (isVariadic() && !td2->isVariadic()) | |
| 626 goto L1; | |
| 627 | |
| 628 #if LOG_LEASTAS | |
| 629 printf(" matches, so is least as specialized\n"); | |
| 630 #endif | |
| 631 return 1; | |
| 632 } | |
| 633 L1: | |
| 634 #if LOG_LEASTAS | |
| 635 printf(" doesn't match, so is not as specialized\n"); | |
| 636 #endif | |
| 637 return 0; | |
| 638 } | |
| 639 | |
| 640 | |
| 641 /************************************************* | |
| 642 * Match function arguments against a specific template function. | |
| 643 * Input: | |
| 644 * targsi Expression/Type initial list of template arguments | |
| 645 * fargs arguments to function | |
| 646 * Output: | |
| 647 * dedargs Expression/Type deduced template arguments | |
| 648 */ | |
| 649 | |
| 130 | 650 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Objects *targsi, Expressions *fargs, |
| 1 | 651 Objects *dedargs) |
| 652 { | |
| 653 size_t i; | |
| 654 size_t nfparams; | |
| 655 size_t nfparams2; | |
| 656 size_t nfargs; | |
| 657 size_t nargsi; | |
| 658 MATCH match = MATCHexact; | |
| 659 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 660 TypeFunction *fdtype; | |
| 661 TemplateTupleParameter *tp; | |
| 662 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 663 | |
| 664 #if 0 | |
| 130 | 665 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); |
| 1 | 666 for (i = 0; i < fargs->dim; i++) |
| 667 { Expression *e = (Expression *)fargs->data[i]; | |
| 668 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 669 } | |
| 670 #endif | |
| 671 | |
| 672 assert((size_t)scope > 0x10000); | |
| 673 | |
| 674 dedargs->setDim(parameters->dim); | |
| 675 dedargs->zero(); | |
| 676 | |
| 677 dedtypes.setDim(parameters->dim); | |
| 678 dedtypes.zero(); | |
| 679 | |
| 680 // Set up scope for parameters | |
| 681 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 682 paramsym->parent = scope->parent; | |
| 683 Scope *paramscope = scope->push(paramsym); | |
| 684 | |
| 685 nargsi = 0; | |
| 686 if (targsi) | |
| 687 { // Set initial template arguments | |
| 688 | |
| 689 nargsi = targsi->dim; | |
| 690 if (nargsi > parameters->dim) | |
| 691 goto Lnomatch; | |
| 692 | |
| 693 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 694 | |
| 695 for (i = 0; i < nargsi; i++) | |
| 696 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 697 MATCH m; | |
| 698 Declaration *sparam; | |
| 699 | |
| 700 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 701 if (m == MATCHnomatch) | |
| 702 goto Lnomatch; | |
| 703 if (m < match) | |
| 704 match = m; | |
| 705 | |
| 706 sparam->semantic(paramscope); | |
| 707 if (!paramscope->insert(sparam)) | |
| 708 goto Lnomatch; | |
| 709 } | |
| 710 } | |
| 711 | |
| 712 assert(fd->type->ty == Tfunction); | |
| 713 fdtype = (TypeFunction *)fd->type; | |
| 714 | |
| 715 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 716 nfparams2 = nfparams; | |
| 717 nfargs = fargs->dim; // number of function arguments | |
| 718 | |
| 719 /* Check for match of function arguments with variadic template | |
| 720 * parameter, such as: | |
| 721 * | |
| 722 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 723 * void main() { Foo(1,2,3); } | |
| 724 */ | |
| 725 tp = isVariadic(); | |
| 726 if (tp) | |
| 727 { | |
| 728 if (nfparams == 0) // if no function parameters | |
| 729 { | |
| 730 Tuple *t = new Tuple(); | |
| 731 //printf("t = %p\n", t); | |
| 732 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 733 goto L2; | |
| 734 } | |
| 735 else if (nfargs < nfparams - 1) | |
| 736 goto L1; | |
| 737 else | |
| 738 { | |
| 739 /* See if 'A' of the template parameter matches 'A' | |
| 740 * of the type of the last function parameter. | |
| 741 */ | |
| 742 Argument *fparam = (Argument *)fdtype->parameters->data[nfparams - 1]; | |
| 743 if (fparam->type->ty != Tident) | |
| 744 goto L1; | |
| 745 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 746 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 747 goto L1; | |
| 748 | |
| 749 if (fdtype->varargs) // variadic function doesn't | |
| 750 goto Lnomatch; // go with variadic template | |
| 751 | |
| 752 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 753 * now form the tuple argument. | |
| 754 */ | |
| 755 Tuple *t = new Tuple(); | |
| 756 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 757 | |
| 758 int tuple_dim = nfargs - (nfparams - 1); | |
| 759 t->objects.setDim(tuple_dim); | |
| 760 for (i = 0; i < tuple_dim; i++) | |
| 761 { Expression *farg = (Expression *)fargs->data[nfparams - 1 + i]; | |
| 762 t->objects.data[i] = (void *)farg->type; | |
| 763 } | |
| 764 nfparams2--; // don't consider the last parameter for type deduction | |
| 765 goto L2; | |
| 766 } | |
| 767 } | |
| 768 | |
| 769 L1: | |
| 770 if (nfparams == nfargs) | |
| 771 ; | |
| 772 else if (nfargs > nfparams) | |
| 773 { | |
| 774 if (fdtype->varargs == 0) | |
| 775 goto Lnomatch; // too many args, no match | |
| 776 match = MATCHconvert; // match ... with a conversion | |
| 777 } | |
| 778 | |
| 779 L2: | |
| 780 // Loop through the function parameters | |
| 781 for (i = 0; i < nfparams2; i++) | |
| 782 { | |
| 783 Argument *fparam = Argument::getNth(fdtype->parameters, i); | |
| 784 Expression *farg; | |
| 785 MATCH m; | |
| 786 | |
| 787 if (i >= nfargs) // if not enough arguments | |
| 788 { | |
| 789 if (fparam->defaultArg) | |
| 790 { /* Default arguments do not participate in template argument | |
| 791 * deduction. | |
| 792 */ | |
| 793 goto Lmatch; | |
| 794 } | |
| 795 } | |
| 796 else | |
| 797 { farg = (Expression *)fargs->data[i]; | |
| 798 #if 0 | |
| 799 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 800 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 801 #endif | |
| 802 | |
| 803 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); | |
| 804 //printf("\tdeduceType m = %d\n", m); | |
| 805 | |
| 806 /* If no match, see if there's a conversion to a delegate | |
| 807 */ | |
| 808 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 809 { | |
| 810 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 92 | 811 TypeFunction *tf = (TypeFunction *)td->next; |
| 1 | 812 |
| 813 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 814 { | |
| 92 | 815 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); |
| 816 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 1 | 817 m = MATCHconvert; |
| 818 } | |
| 819 //printf("\tm2 = %d\n", m); | |
| 820 } | |
| 821 | |
| 822 if (m) | |
| 823 { if (m < match) | |
| 824 match = m; // pick worst match | |
| 825 continue; | |
| 826 } | |
| 827 } | |
| 828 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 829 goto Lnomatch; | |
| 830 | |
| 831 /* Check for match with function parameter T... | |
| 832 */ | |
| 833 Type *t = fparam->type; | |
| 834 switch (t->ty) | |
| 835 { | |
| 836 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 837 case Tsarray: | |
| 838 case Tarray: | |
| 839 case Tclass: | |
| 840 case Tident: | |
| 841 goto Lmatch; | |
| 842 | |
| 843 default: | |
| 844 goto Lnomatch; | |
| 845 } | |
| 846 } | |
| 847 | |
| 848 Lmatch: | |
| 849 | |
| 850 /* Fill in any missing arguments with their defaults. | |
| 851 */ | |
| 852 for (i = nargsi; i < dedargs->dim; i++) | |
| 853 { | |
| 854 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 855 Object *oarg = (Object *)dedargs->data[i]; | |
| 856 Object *o = (Object *)dedtypes.data[i]; | |
| 857 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, o); | |
| 858 if (!oarg) | |
| 859 { | |
| 860 if (o) | |
| 861 { | |
| 862 if (tp->specialization()) | |
| 863 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 864 } | |
| 865 else | |
| 866 { o = tp->defaultArg(paramscope); | |
| 867 if (!o) | |
| 868 goto Lnomatch; | |
| 869 #if 0 | |
| 870 Match m; | |
| 871 Declaration *sparam; | |
| 872 m = tp->matchArg(paramscope, dedargs, i, parameters, &sparam); | |
| 873 if (!m) | |
| 874 goto Lnomatch; | |
| 875 #endif | |
| 876 } | |
| 877 declareParameter(paramscope, tp, o); | |
| 878 dedargs->data[i] = (void *)o; | |
| 879 } | |
| 880 } | |
| 881 | |
| 882 #if 0 | |
| 883 for (i = 0; i < dedargs->dim; i++) | |
| 884 { Type *t = (Type *)dedargs->data[i]; | |
| 885 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 886 } | |
| 887 #endif | |
| 888 | |
| 889 paramscope->pop(); | |
| 890 //printf("\tmatch\n"); | |
| 891 return match; | |
| 892 | |
| 893 Lnomatch: | |
| 894 paramscope->pop(); | |
| 895 //printf("\tnomatch\n"); | |
| 896 return MATCHnomatch; | |
| 897 } | |
| 898 | |
| 899 /************************************************** | |
| 900 * Declare template parameter tp with value o. | |
| 901 */ | |
| 902 | |
| 903 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 904 { | |
| 905 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 906 | |
| 907 Type *targ = isType(o); | |
| 908 Expression *ea = isExpression(o); | |
| 909 Dsymbol *sa = isDsymbol(o); | |
| 910 Tuple *va = isTuple(o); | |
| 911 | |
| 912 Dsymbol *s; | |
| 913 | |
| 914 if (targ) | |
| 915 { | |
| 916 //printf("type %s\n", targ->toChars()); | |
| 917 s = new AliasDeclaration(0, tp->ident, targ); | |
| 918 } | |
| 919 else if (sa) | |
| 920 { | |
| 921 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 922 s = new AliasDeclaration(0, tp->ident, sa); | |
| 923 } | |
| 924 else if (ea) | |
| 925 { | |
| 926 // tdtypes.data[i] always matches ea here | |
| 927 Initializer *init = new ExpInitializer(loc, ea); | |
| 928 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 929 assert(tvp); | |
| 930 | |
| 931 VarDeclaration *v = new VarDeclaration(0, tvp->valType, tp->ident, init); | |
| 932 v->storage_class = STCconst; | |
| 933 s = v; | |
| 934 } | |
| 935 else if (va) | |
| 936 { | |
| 937 //printf("\ttuple\n"); | |
| 938 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 939 } | |
| 940 else | |
| 941 { | |
| 942 #ifdef DEBUG | |
| 943 o->print(); | |
| 944 #endif | |
| 945 assert(0); | |
| 946 } | |
| 947 if (!sc->insert(s)) | |
| 948 error("declaration %s is already defined", tp->ident->toChars()); | |
| 949 s->semantic(sc); | |
| 950 } | |
| 951 | |
| 952 /************************************** | |
| 953 * Determine if TemplateDeclaration is variadic. | |
| 954 */ | |
| 955 | |
| 956 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 957 { size_t dim = parameters->dim; | |
| 958 TemplateTupleParameter *tp = NULL; | |
| 959 | |
| 960 if (dim) | |
| 961 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 962 return tp; | |
| 963 } | |
| 964 | |
| 965 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 966 { | |
| 967 return ::isVariadic(parameters); | |
| 968 } | |
| 969 | |
| 92 | 970 /*********************************** |
| 971 * We can overload templates. | |
| 972 */ | |
| 973 | |
| 974 int TemplateDeclaration::isOverloadable() | |
| 975 { | |
| 976 return 1; | |
| 977 } | |
| 978 | |
| 1 | 979 /************************************************* |
| 980 * Given function arguments, figure out which template function | |
| 981 * to expand, and return that function. | |
| 982 * If no match, give error message and return NULL. | |
| 983 * Input: | |
| 984 * targsi initial list of template arguments | |
| 985 * fargs arguments to function | |
| 986 */ | |
| 987 | |
| 130 | 988 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, |
| 1 | 989 Objects *targsi, Expressions *fargs) |
| 990 { | |
| 991 MATCH m_best = MATCHnomatch; | |
| 992 TemplateDeclaration *td_ambig = NULL; | |
| 993 TemplateDeclaration *td_best = NULL; | |
| 994 Objects *tdargs = new Objects(); | |
| 995 TemplateInstance *ti; | |
| 996 FuncDeclaration *fd; | |
| 997 | |
| 998 #if 0 | |
| 130 | 999 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); |
| 1 | 1000 printf(" targsi:\n"); |
| 1001 if (targsi) | |
| 1002 { for (int i = 0; i < targsi->dim; i++) | |
| 1003 { Object *arg = (Object *)targsi->data[i]; | |
| 1004 printf("\t%s\n", arg->toChars()); | |
| 1005 } | |
| 1006 } | |
| 1007 printf(" fargs:\n"); | |
| 1008 for (int i = 0; i < fargs->dim; i++) | |
| 1009 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1010 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1011 //printf("\tty = %d\n", arg->type->ty); | |
| 1012 } | |
| 1013 #endif | |
| 1014 | |
| 1015 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1016 { | |
| 1017 if (!td->scope) | |
| 1018 { | |
| 1019 error("forward reference to template %s", td->toChars()); | |
| 1020 goto Lerror; | |
| 1021 } | |
| 1022 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1023 { | |
| 1024 error("is not a function template"); | |
| 1025 goto Lerror; | |
| 1026 } | |
| 1027 | |
| 1028 MATCH m; | |
| 1029 Objects dedargs; | |
| 1030 | |
| 130 | 1031 m = td->deduceFunctionTemplateMatch(targsi, fargs, &dedargs); |
| 1032 //printf("deduceFunctionTemplateMatch = %d\n", m); | |
| 1 | 1033 if (!m) // if no match |
| 1034 continue; | |
| 1035 | |
| 1036 if (m < m_best) | |
| 1037 goto Ltd_best; | |
| 1038 if (m > m_best) | |
| 1039 goto Ltd; | |
| 1040 | |
| 1041 { | |
| 1042 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1043 int c1 = td->leastAsSpecialized(td_best); | |
| 1044 int c2 = td_best->leastAsSpecialized(td); | |
| 1045 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1046 | |
| 1047 if (c1 && !c2) | |
| 1048 goto Ltd; | |
| 1049 else if (!c1 && c2) | |
| 1050 goto Ltd_best; | |
| 1051 else | |
| 1052 goto Lambig; | |
| 1053 } | |
| 1054 | |
| 1055 Lambig: // td_best and td are ambiguous | |
| 1056 td_ambig = td; | |
| 1057 continue; | |
| 1058 | |
| 1059 Ltd_best: // td_best is the best match so far | |
| 1060 td_ambig = NULL; | |
| 1061 continue; | |
| 1062 | |
| 1063 Ltd: // td is the new best match | |
| 1064 td_ambig = NULL; | |
| 1065 assert((size_t)td->scope > 0x10000); | |
| 1066 td_best = td; | |
| 1067 m_best = m; | |
| 1068 tdargs->setDim(dedargs.dim); | |
| 1069 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1070 continue; | |
| 1071 } | |
| 1072 if (!td_best) | |
| 1073 { | |
| 1074 error(loc, "does not match any template declaration"); | |
| 1075 goto Lerror; | |
| 1076 } | |
| 1077 if (td_ambig) | |
| 1078 { | |
| 1079 error(loc, "%s matches more than one function template declaration, %s and %s", | |
| 1080 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 1081 } | |
| 1082 | |
| 1083 /* The best match is td_best with arguments tdargs. | |
| 1084 * Now instantiate the template. | |
| 1085 */ | |
| 1086 assert((size_t)td_best->scope > 0x10000); | |
| 1087 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1088 ti->semantic(sc); | |
| 1089 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1090 if (!fd) | |
| 1091 goto Lerror; | |
| 1092 return fd; | |
| 1093 | |
| 1094 Lerror: | |
| 1095 { | |
| 1096 OutBuffer buf; | |
| 1097 HdrGenState hgs; | |
| 1098 | |
| 1099 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
| 1100 error(loc, "cannot deduce template function from argument types (%s)", | |
| 1101 buf.toChars()); | |
| 1102 return NULL; | |
| 1103 } | |
| 1104 } | |
| 1105 | |
| 1106 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1107 { | |
| 1108 #if 0 // Should handle template functions | |
| 1109 if (onemember && onemember->isFuncDeclaration()) | |
| 1110 buf->writestring("foo "); | |
| 1111 #endif | |
| 1112 buf->writestring(kind()); | |
| 1113 buf->writeByte(' '); | |
| 1114 buf->writestring(ident->toChars()); | |
| 1115 buf->writeByte('('); | |
| 1116 for (int i = 0; i < parameters->dim; i++) | |
| 1117 { | |
| 1118 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1119 if (i) | |
| 1120 buf->writeByte(','); | |
| 1121 tp->toCBuffer(buf, hgs); | |
| 1122 } | |
| 1123 buf->writeByte(')'); | |
| 1124 | |
| 1125 if (hgs->hdrgen) | |
| 1126 { | |
| 1127 hgs->tpltMember++; | |
| 1128 buf->writenl(); | |
| 1129 buf->writebyte('{'); | |
| 1130 buf->writenl(); | |
| 1131 for (int i = 0; i < members->dim; i++) | |
| 1132 { | |
| 1133 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1134 s->toCBuffer(buf, hgs); | |
| 1135 } | |
| 1136 buf->writebyte('}'); | |
| 1137 buf->writenl(); | |
| 1138 hgs->tpltMember--; | |
| 1139 } | |
| 1140 } | |
| 1141 | |
| 1142 | |
| 1143 char *TemplateDeclaration::toChars() | |
| 1144 { OutBuffer buf; | |
| 1145 HdrGenState hgs; | |
| 1146 | |
| 1147 memset(&hgs, 0, sizeof(hgs)); | |
| 1148 buf.writestring(ident->toChars()); | |
| 1149 buf.writeByte('('); | |
| 1150 for (int i = 0; i < parameters->dim; i++) | |
| 1151 { | |
| 1152 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1153 if (i) | |
| 1154 buf.writeByte(','); | |
| 1155 tp->toCBuffer(&buf, &hgs); | |
| 1156 } | |
| 1157 buf.writeByte(')'); | |
| 1158 buf.writeByte(0); | |
| 1159 return (char *)buf.extractData(); | |
| 1160 } | |
| 1161 | |
| 1162 /* ======================== Type ============================================ */ | |
| 1163 | |
| 1164 /**** | |
| 1165 * Given an identifier, figure out which TemplateParameter it is. | |
| 1166 * Return -1 if not found. | |
| 1167 */ | |
| 1168 | |
| 92 | 1169 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) |
| 1170 { | |
| 1171 for (size_t i = 0; i < parameters->dim; i++) | |
| 1172 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1173 | |
| 1174 if (tp->ident->equals(id)) | |
| 1175 return i; | |
| 1176 } | |
| 1177 return -1; | |
| 1178 } | |
| 1179 | |
| 1 | 1180 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) |
| 1181 { | |
| 1182 assert(tparam->ty == Tident); | |
| 1183 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1184 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1185 if (tident->idents.dim == 0) | |
| 1186 { | |
| 92 | 1187 return templateIdentifierLookup(tident->ident, parameters); |
| 1 | 1188 } |
| 1189 return -1; | |
| 1190 } | |
| 1191 | |
| 1192 /* These form the heart of template argument deduction. | |
| 1193 * Given 'this' being the type argument to the template instance, | |
| 1194 * it is matched against the template declaration parameter specialization | |
| 1195 * 'tparam' to determine the type to be used for the parameter. | |
| 1196 * Example: | |
| 1197 * template Foo(T:T*) // template declaration | |
| 1198 * Foo!(int*) // template instantiation | |
| 1199 * Input: | |
| 1200 * this = int* | |
| 1201 * tparam = T | |
| 1202 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1203 * Output: | |
| 1204 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1205 */ | |
| 1206 | |
| 1207 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1208 Objects *dedtypes) | |
| 1209 { | |
| 1210 //printf("Type::deduceType()\n"); | |
| 1211 //printf("\tthis = %d, ", ty); print(); | |
| 1212 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1213 if (!tparam) | |
| 1214 goto Lnomatch; | |
| 1215 | |
| 1216 if (this == tparam) | |
| 1217 goto Lexact; | |
| 1218 | |
| 1219 if (tparam->ty == Tident) | |
| 1220 { | |
| 1221 // Determine which parameter tparam is | |
| 1222 int i = templateParameterLookup(tparam, parameters); | |
| 1223 if (i == -1) | |
| 1224 { | |
| 1225 if (!sc) | |
| 1226 goto Lnomatch; | |
| 1227 /* BUG: what if tparam is a template instance, that | |
| 1228 * has as an argument another Tident? | |
| 1229 */ | |
| 1230 tparam = tparam->semantic(0, sc); | |
| 1231 assert(tparam->ty != Tident); | |
| 1232 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1233 } | |
| 1234 | |
| 1235 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1236 | |
| 1237 // Found the corresponding parameter tp | |
| 1238 if (!tp->isTemplateTypeParameter()) | |
| 1239 goto Lnomatch; | |
| 1240 Type *at = (Type *)dedtypes->data[i]; | |
| 1241 if (!at) | |
| 1242 { | |
| 1243 dedtypes->data[i] = (void *)this; | |
| 1244 goto Lexact; | |
| 1245 } | |
| 1246 if (equals(at)) | |
| 1247 goto Lexact; | |
| 1248 else if (ty == Tclass && at->ty == Tclass) | |
| 1249 { | |
| 1250 return (MATCH) implicitConvTo(at); | |
| 1251 } | |
| 1252 else if (ty == Tsarray && at->ty == Tarray && | |
| 19 | 1253 nextOf()->equals(at->nextOf())) |
| 1 | 1254 { |
| 1255 goto Lexact; | |
| 1256 } | |
| 1257 else | |
| 1258 goto Lnomatch; | |
| 1259 } | |
| 1260 | |
| 1261 if (ty != tparam->ty) | |
| 1262 goto Lnomatch; | |
| 1263 | |
| 1264 if (nextOf()) | |
| 1265 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1266 | |
| 1267 Lexact: | |
| 1268 return MATCHexact; | |
| 1269 | |
| 1270 Lnomatch: | |
| 1271 return MATCHnomatch; | |
| 1272 } | |
| 1273 | |
| 1274 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1275 Objects *dedtypes) | |
| 1276 { | |
| 1277 #if 0 | |
| 1278 printf("TypeSArray::deduceType()\n"); | |
| 1279 printf("\tthis = %d, ", ty); print(); | |
| 1280 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1281 #endif | |
| 1282 | |
| 1283 // Extra check that array dimensions must match | |
| 1284 if (tparam) | |
| 1285 { | |
| 1286 if (tparam->ty == Tsarray) | |
| 1287 { | |
| 1288 TypeSArray *tp = (TypeSArray *)tparam; | |
| 92 | 1289 |
| 1290 if (tp->dim->op == TOKvar && | |
| 1291 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1292 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1293 // This code matches code in TypeInstance::deduceType() | |
| 1294 if (i == -1) | |
| 1295 goto Lnomatch; | |
| 1296 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1297 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1298 if (!tvp) | |
| 1299 goto Lnomatch; | |
| 1300 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1301 if (e) | |
| 1302 { | |
| 1303 if (!dim->equals(e)) | |
| 1304 goto Lnomatch; | |
| 1305 } | |
| 1306 else | |
| 1307 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1308 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1309 if (!m) | |
| 1310 goto Lnomatch; | |
| 1311 dedtypes->data[i] = dim; | |
| 1312 } | |
| 1313 } | |
| 1314 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1 | 1315 return MATCHnomatch; |
| 1316 } | |
| 1317 else if (tparam->ty == Taarray) | |
| 1318 { | |
| 1319 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1320 if (tp->index->ty == Tident) | |
| 1321 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1322 | |
| 1323 if (tident->idents.dim == 0) | |
| 1324 { Identifier *id = tident->ident; | |
| 1325 | |
| 1326 for (size_t i = 0; i < parameters->dim; i++) | |
| 1327 { | |
| 1328 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1329 | |
| 1330 if (tp->ident->equals(id)) | |
| 1331 { // Found the corresponding template parameter | |
| 1332 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1333 if (!tvp || !tvp->valType->isintegral()) | |
| 1334 goto Lnomatch; | |
| 1335 | |
| 1336 if (dedtypes->data[i]) | |
| 1337 { | |
| 1338 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1339 goto Lnomatch; | |
| 1340 } | |
| 1341 else | |
| 1342 { dedtypes->data[i] = (void *)dim; | |
| 1343 } | |
| 1344 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1345 } | |
| 1346 } | |
| 1347 } | |
| 1348 } | |
| 1349 } | |
| 1350 else if (tparam->ty == Tarray) | |
| 1351 { MATCH m; | |
| 1352 | |
| 1353 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1354 if (m == MATCHexact) | |
| 1355 m = MATCHconvert; | |
| 1356 return m; | |
| 1357 } | |
| 1358 } | |
| 1359 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1360 | |
| 1361 Lnomatch: | |
| 1362 return MATCHnomatch; | |
| 1363 } | |
| 1364 | |
| 1365 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1366 { | |
| 92 | 1367 #if 0 |
| 1368 printf("TypeAArray::deduceType()\n"); | |
| 1369 printf("\tthis = %d, ", ty); print(); | |
| 1370 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1371 #endif | |
| 1 | 1372 |
| 1373 // Extra check that index type must match | |
| 1374 if (tparam && tparam->ty == Taarray) | |
| 1375 { | |
| 1376 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1377 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1378 { | |
| 1379 return MATCHnomatch; | |
| 1380 } | |
| 1381 } | |
| 1382 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1383 } | |
| 1384 | |
| 1385 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1386 { | |
| 1387 //printf("TypeFunction::deduceType()\n"); | |
| 1388 //printf("\tthis = %d, ", ty); print(); | |
| 1389 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1390 | |
| 1391 // Extra check that function characteristics must match | |
| 1392 if (tparam && tparam->ty == Tfunction) | |
| 1393 { | |
| 1394 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1395 if (varargs != tp->varargs || | |
| 1396 linkage != tp->linkage) | |
| 1397 return MATCHnomatch; | |
| 1398 | |
| 1399 size_t nfargs = Argument::dim(this->parameters); | |
| 1400 size_t nfparams = Argument::dim(tp->parameters); | |
| 1401 | |
| 1402 /* See if tuple match | |
| 1403 */ | |
| 1404 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1405 { | |
| 1406 /* See if 'A' of the template parameter matches 'A' | |
| 1407 * of the type of the last function parameter. | |
| 1408 */ | |
| 1409 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1410 if (fparam->type->ty != Tident) | |
| 1411 goto L1; | |
| 1412 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1413 if (tid->idents.dim) | |
| 1414 goto L1; | |
| 1415 | |
| 1416 /* Look through parameters to find tuple matching tid->ident | |
| 1417 */ | |
| 1418 size_t tupi = 0; | |
| 1419 for (; 1; tupi++) | |
| 1420 { if (tupi == parameters->dim) | |
| 1421 goto L1; | |
| 1422 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1423 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1424 if (tup && tup->ident->equals(tid->ident)) | |
| 1425 break; | |
| 1426 } | |
| 1427 | |
| 1428 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1429 * now form the tuple argument. | |
| 1430 */ | |
| 1431 int tuple_dim = nfargs - (nfparams - 1); | |
| 1432 | |
| 1433 /* See if existing tuple, and whether it matches or not | |
| 1434 */ | |
| 1435 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1436 if (o) | |
| 1437 { // Existing deduced argument must be a tuple, and must match | |
| 1438 Tuple *t = isTuple(o); | |
| 1439 if (!t || t->objects.dim != tuple_dim) | |
| 1440 return MATCHnomatch; | |
| 1441 for (size_t i = 0; i < tuple_dim; i++) | |
| 1442 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1443 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1444 return MATCHnomatch; | |
| 1445 } | |
| 1446 } | |
| 1447 else | |
| 1448 { // Create new tuple | |
| 1449 Tuple *t = new Tuple(); | |
| 1450 t->objects.setDim(tuple_dim); | |
| 1451 for (size_t i = 0; i < tuple_dim; i++) | |
| 1452 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1453 t->objects.data[i] = (void *)arg->type; | |
| 1454 } | |
| 1455 dedtypes->data[tupi] = (void *)t; | |
| 1456 } | |
| 1457 nfparams--; // don't consider the last parameter for type deduction | |
| 1458 goto L2; | |
| 1459 } | |
| 1460 | |
| 1461 L1: | |
| 1462 if (nfargs != nfparams) | |
| 1463 return MATCHnomatch; | |
| 1464 L2: | |
| 1465 for (size_t i = 0; i < nfparams; i++) | |
| 1466 { | |
| 1467 Argument *a = Argument::getNth(this->parameters, i); | |
| 1468 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1469 if (a->storageClass != ap->storageClass || | |
| 1470 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1471 return MATCHnomatch; | |
| 1472 } | |
| 1473 } | |
| 1474 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1475 } | |
| 1476 | |
| 1477 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1478 { | |
| 1479 // Extra check | |
| 1480 if (tparam && tparam->ty == Tident) | |
| 1481 { | |
| 1482 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1483 | |
| 1484 for (int i = 0; i < idents.dim; i++) | |
| 1485 { | |
| 1486 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1487 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1488 | |
| 1489 if (!id1->equals(id2)) | |
| 1490 return MATCHnomatch; | |
| 1491 } | |
| 1492 } | |
| 1493 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1494 } | |
| 1495 | |
| 1496 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1497 Type *tparam, TemplateParameters *parameters, | |
| 1498 Objects *dedtypes) | |
| 1499 { | |
| 1500 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1501 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1502 | |
| 1503 // Extra check | |
| 1504 if (tparam && tparam->ty == Tinstance) | |
| 1505 { | |
| 1506 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1507 | |
| 1508 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1509 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1510 if (!tp->tempinst->tempdecl) | |
| 92 | 1511 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); |
| 1512 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1513 { | |
| 1514 /* Handle case of: | |
| 1515 * template Foo(T : sa!(T), alias sa) | |
| 1516 */ | |
| 1517 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1518 if (i == -1) | |
| 1519 goto Lnomatch; | |
| 1520 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; | |
| 1521 // This logic duplicates tpx->matchArg() | |
| 1522 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1523 if (!ta) | |
| 1524 goto Lnomatch; | |
| 1525 Dsymbol *sa = tempinst->tempdecl; | |
| 1526 if (!sa) | |
| 1527 goto Lnomatch; | |
| 1528 if (ta->specAlias && sa != ta->specAlias) | |
| 1529 goto Lnomatch; | |
| 1530 if (dedtypes->data[i]) | |
| 1531 { // Must match already deduced symbol | |
| 1532 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1533 | |
| 1534 if (s != sa) | |
| 1535 goto Lnomatch; | |
| 1536 } | |
| 1537 dedtypes->data[i] = sa; | |
| 1538 } | |
| 1 | 1539 } |
| 1540 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1541 goto Lnomatch; | |
| 1542 | |
|
139
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
1543 if (tempinst->tiargs->dim != tp->tempinst->tiargs->dim) |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
1544 goto Lnomatch; |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
1545 |
| 1 | 1546 for (int i = 0; i < tempinst->tiargs->dim; i++) |
| 1547 { | |
| 1548 //printf("test: [%d]\n", i); | |
| 1549 Object *o1 = (Object *)tempinst->tiargs->data[i]; | |
| 1550 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1551 | |
| 1552 Type *t1 = isType(o1); | |
| 1553 Type *t2 = isType(o2); | |
| 1554 | |
| 1555 Expression *e1 = isExpression(o1); | |
| 1556 Expression *e2 = isExpression(o2); | |
| 1557 | |
| 1558 #if 0 | |
| 1559 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1560 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1561 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1562 if (e2) printf("e2 = %s\n", e2->toChars()); | |
| 1563 #endif | |
| 1564 | |
| 1565 if (t1 && t2) | |
| 1566 { | |
| 1567 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1568 goto Lnomatch; | |
| 1569 } | |
| 1570 else if (e1 && e2) | |
| 1571 { | |
| 1572 if (!e1->equals(e2)) | |
| 1573 goto Lnomatch; | |
| 1574 } | |
| 1575 else if (e1 && t2 && t2->ty == Tident) | |
| 1576 { int i = templateParameterLookup(t2, parameters); | |
| 1577 if (i == -1) | |
| 1578 goto Lnomatch; | |
| 1579 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1580 // BUG: use tp->matchArg() instead of the following | |
| 1581 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1582 if (!tv) | |
| 1583 goto Lnomatch; | |
| 1584 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1585 if (e) | |
| 1586 { | |
| 1587 if (!e1->equals(e)) | |
| 1588 goto Lnomatch; | |
| 1589 } | |
| 1590 else | |
| 1591 { Type *vt = tv->valType->semantic(0, sc); | |
| 1592 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1593 if (!m) | |
| 1594 goto Lnomatch; | |
| 1595 dedtypes->data[i] = e1; | |
| 1596 } | |
| 1597 } | |
| 1598 // BUG: Need to handle alias and tuple parameters | |
| 1599 else | |
| 1600 goto Lnomatch; | |
| 1601 } | |
| 1602 } | |
| 1603 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1604 | |
| 1605 Lnomatch: | |
| 1606 return MATCHnomatch; | |
| 1607 } | |
| 1608 | |
| 1609 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1610 { | |
| 1611 //printf("TypeStruct::deduceType()\n"); | |
| 1612 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1613 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1614 | |
| 1615 /* If this struct is a template struct, and we're matching | |
| 1616 * it against a template instance, convert the struct type | |
| 1617 * to a template instance, too, and try again. | |
| 1618 */ | |
| 1619 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1620 | |
| 1621 if (tparam && tparam->ty == Tinstance) | |
| 1622 { | |
| 1623 if (ti && ti->toAlias() == sym) | |
| 1624 { | |
| 1625 TypeInstance *t = new TypeInstance(0, ti); | |
| 1626 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1627 } | |
| 1628 | |
| 1629 /* Match things like: | |
| 1630 * S!(T).foo | |
| 1631 */ | |
| 1632 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1633 if (tpi->idents.dim) | |
| 1634 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1635 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1636 { | |
| 1637 Type *tparent = sym->parent->getType(); | |
| 1638 if (tparent) | |
| 1639 { | |
| 1640 /* Slice off the .foo in S!(T).foo | |
| 1641 */ | |
| 1642 tpi->idents.dim--; | |
| 1643 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1644 tpi->idents.dim++; | |
| 1645 return m; | |
| 1646 } | |
| 1647 } | |
| 1648 } | |
| 1649 } | |
| 1650 | |
| 1651 // Extra check | |
| 1652 if (tparam && tparam->ty == Tstruct) | |
| 1653 { | |
| 1654 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1655 | |
| 1656 if (sym != tp->sym) | |
| 1657 return MATCHnomatch; | |
| 1658 } | |
| 1659 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1660 } | |
| 1661 | |
| 1662 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1663 { | |
| 1664 // Extra check | |
| 1665 if (tparam && tparam->ty == Tenum) | |
| 1666 { | |
| 1667 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1668 | |
| 1669 if (sym != tp->sym) | |
| 1670 return MATCHnomatch; | |
| 1671 } | |
| 1672 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1673 } | |
| 1674 | |
| 1675 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1676 { | |
| 1677 // Extra check | |
| 1678 if (tparam && tparam->ty == Ttypedef) | |
| 1679 { | |
| 1680 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 1681 | |
| 1682 if (sym != tp->sym) | |
| 1683 return MATCHnomatch; | |
| 1684 } | |
| 1685 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1686 } | |
| 1687 | |
| 1688 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1689 { | |
| 1690 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 1691 | |
| 1692 /* If this class is a template class, and we're matching | |
| 1693 * it against a template instance, convert the class type | |
| 1694 * to a template instance, too, and try again. | |
| 1695 */ | |
| 1696 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1697 | |
| 1698 if (tparam && tparam->ty == Tinstance) | |
| 1699 { | |
| 1700 if (ti && ti->toAlias() == sym) | |
| 1701 { | |
| 1702 TypeInstance *t = new TypeInstance(0, ti); | |
| 1703 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1704 } | |
| 1705 | |
| 1706 /* Match things like: | |
| 1707 * S!(T).foo | |
| 1708 */ | |
| 1709 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1710 if (tpi->idents.dim) | |
| 1711 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1712 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1713 { | |
| 1714 Type *tparent = sym->parent->getType(); | |
| 1715 if (tparent) | |
| 1716 { | |
| 1717 /* Slice off the .foo in S!(T).foo | |
| 1718 */ | |
| 1719 tpi->idents.dim--; | |
| 1720 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1721 tpi->idents.dim++; | |
| 1722 return m; | |
| 1723 } | |
| 1724 } | |
| 1725 } | |
| 1726 } | |
| 1727 | |
| 1728 // Extra check | |
| 1729 if (tparam && tparam->ty == Tclass) | |
| 1730 { | |
| 1731 TypeClass *tp = (TypeClass *)tparam; | |
| 1732 | |
| 1733 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 1734 return (MATCH) implicitConvTo(tp); | |
| 1735 } | |
| 1736 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1737 } | |
| 1738 | |
| 1739 /* ======================== TemplateParameter =============================== */ | |
| 1740 | |
| 1741 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 1742 { | |
| 1743 this->loc = loc; | |
| 1744 this->ident = ident; | |
| 1745 this->sparam = NULL; | |
| 1746 } | |
| 1747 | |
| 1748 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 1749 { | |
| 1750 return NULL; | |
| 1751 } | |
| 1752 | |
| 1753 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 1754 { | |
| 1755 return NULL; | |
| 1756 } | |
| 1757 | |
| 1758 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 1759 { | |
| 1760 return NULL; | |
| 1761 } | |
| 1762 | |
| 1763 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 1764 { | |
| 1765 return NULL; | |
| 1766 } | |
| 1767 | |
| 1768 /* ======================== TemplateTypeParameter =========================== */ | |
| 1769 | |
| 1770 // type-parameter | |
| 1771 | |
| 1772 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 1773 Type *defaultType) | |
| 1774 : TemplateParameter(loc, ident) | |
| 1775 { | |
| 1776 this->ident = ident; | |
| 1777 this->specType = specType; | |
| 1778 this->defaultType = defaultType; | |
| 1779 } | |
| 1780 | |
| 1781 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 1782 { | |
| 1783 return this; | |
| 1784 } | |
| 1785 | |
| 1786 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 1787 { | |
| 1788 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 1789 if (tp->specType) | |
| 1790 tp->specType = specType->syntaxCopy(); | |
| 1791 if (defaultType) | |
| 1792 tp->defaultType = defaultType->syntaxCopy(); | |
| 1793 return tp; | |
| 1794 } | |
| 1795 | |
| 1796 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 1797 { | |
| 1798 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 1799 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 1800 sparam = new AliasDeclaration(loc, ident, ti); | |
| 1801 if (!sc->insert(sparam)) | |
| 1802 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 1803 } | |
| 1804 | |
| 1805 void TemplateTypeParameter::semantic(Scope *sc) | |
| 1806 { | |
| 1807 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 1808 if (specType) | |
| 1809 { | |
| 1810 specType = specType->semantic(loc, sc); | |
| 1811 } | |
| 1812 #if 0 // Don't do semantic() until instantiation | |
| 1813 if (defaultType) | |
| 1814 { | |
| 1815 defaultType = defaultType->semantic(loc, sc); | |
| 1816 } | |
| 1817 #endif | |
| 1818 } | |
| 1819 | |
| 1820 /**************************************** | |
| 1821 * Determine if two TemplateParameters are the same | |
| 1822 * as far as TemplateDeclaration overloading goes. | |
| 1823 * Returns: | |
| 1824 * 1 match | |
| 1825 * 0 no match | |
| 1826 */ | |
| 1827 | |
| 1828 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 1829 { | |
| 1830 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 1831 | |
| 1832 if (ttp) | |
| 1833 { | |
| 1834 if (specType != ttp->specType) | |
| 1835 goto Lnomatch; | |
| 1836 | |
| 1837 if (specType && !specType->equals(ttp->specType)) | |
| 1838 goto Lnomatch; | |
| 1839 | |
| 1840 return 1; // match | |
| 1841 } | |
| 1842 | |
| 1843 Lnomatch: | |
| 1844 return 0; | |
| 1845 } | |
| 1846 | |
| 1847 /******************************************* | |
| 1848 * Match to a particular TemplateParameter. | |
| 1849 * Input: | |
| 1850 * i i'th argument | |
| 1851 * tiargs[] actual arguments to template instance | |
| 1852 * parameters[] template parameters | |
| 1853 * dedtypes[] deduced arguments to template instance | |
| 1854 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 1855 */ | |
| 1856 | |
| 1857 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 1858 int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 1859 Declaration **psparam) | |
| 1860 { | |
| 1861 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 1862 Type *t; | |
| 1863 Object *oarg; | |
| 1864 MATCH m = MATCHexact; | |
| 1865 Type *ta; | |
| 1866 | |
| 1867 if (i < tiargs->dim) | |
| 1868 oarg = (Object *)tiargs->data[i]; | |
| 1869 else | |
| 1870 { // Get default argument instead | |
| 1871 oarg = defaultArg(sc); | |
| 1872 if (!oarg) | |
| 1873 { assert(i < dedtypes->dim); | |
| 1874 // It might have already been deduced | |
| 1875 oarg = (Object *)dedtypes->data[i]; | |
| 1876 if (!oarg) | |
| 1877 goto Lnomatch; | |
| 1878 } | |
| 1879 } | |
| 1880 | |
| 1881 ta = isType(oarg); | |
| 1882 if (!ta) | |
| 1883 goto Lnomatch; | |
| 1884 //printf("ta is %s\n", ta->toChars()); | |
| 1885 | |
| 1886 t = (Type *)dedtypes->data[i]; | |
| 1887 | |
| 1888 if (specType) | |
| 1889 { | |
| 1890 //printf("\tcalling deduceType(), specType is %s\n", specType->toChars()); | |
| 1891 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 1892 if (m2 == MATCHnomatch) | |
| 1893 { //printf("\tfailed deduceType\n"); | |
| 1894 goto Lnomatch; | |
| 1895 } | |
| 1896 | |
| 1897 if (m2 < m) | |
| 1898 m = m2; | |
| 1899 t = (Type *)dedtypes->data[i]; | |
| 1900 } | |
| 1901 else | |
| 1902 { | |
| 1903 m = MATCHconvert; | |
| 1904 if (t) | |
| 1905 { // Must match already deduced type | |
| 1906 | |
| 92 | 1907 m = MATCHexact; |
| 1 | 1908 if (!t->equals(ta)) |
| 1909 goto Lnomatch; | |
| 1910 } | |
| 1911 } | |
| 1912 | |
| 1913 if (!t) | |
| 1914 { | |
| 1915 dedtypes->data[i] = ta; | |
| 1916 t = ta; | |
| 1917 } | |
| 1918 *psparam = new AliasDeclaration(loc, ident, t); | |
| 1919 //printf("\tm = %d\n", m); | |
| 1920 return m; | |
| 1921 | |
| 1922 Lnomatch: | |
| 1923 *psparam = NULL; | |
| 1924 //printf("\tm = %d\n", MATCHnomatch); | |
| 1925 return MATCHnomatch; | |
| 1926 } | |
| 1927 | |
| 1928 | |
| 1929 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 1930 { | |
| 1931 printf(" %s\n", ident->toChars()); | |
| 1932 | |
| 1933 Type *t = isType(oarg); | |
| 1934 Type *ta = isType(oded); | |
| 1935 | |
| 1936 assert(ta); | |
| 1937 | |
| 1938 if (specType) | |
| 1939 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 1940 if (defaultType) | |
| 1941 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 1942 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 1943 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 1944 } | |
| 1945 | |
| 1946 | |
| 1947 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1948 { | |
| 1949 buf->writestring(ident->toChars()); | |
| 1950 if (specType) | |
| 1951 { | |
| 1952 buf->writestring(" : "); | |
| 1953 specType->toCBuffer(buf, NULL, hgs); | |
| 1954 } | |
| 1955 if (defaultType) | |
| 1956 { | |
| 1957 buf->writestring(" = "); | |
| 1958 defaultType->toCBuffer(buf, NULL, hgs); | |
| 1959 } | |
| 1960 } | |
| 1961 | |
| 1962 | |
| 1963 void *TemplateTypeParameter::dummyArg() | |
| 1964 { Type *t; | |
| 1965 | |
| 1966 if (specType) | |
| 1967 t = specType; | |
| 1968 else | |
| 1969 { // Use this for alias-parameter's too (?) | |
| 1970 t = new TypeIdentifier(loc, ident); | |
| 1971 } | |
| 1972 return (void *)t; | |
| 1973 } | |
| 1974 | |
| 1975 | |
| 1976 Object *TemplateTypeParameter::specialization() | |
| 1977 { | |
| 1978 return specType; | |
| 1979 } | |
| 1980 | |
| 1981 | |
| 1982 Object *TemplateTypeParameter::defaultArg(Scope *sc) | |
| 1983 { | |
| 1984 Type *t; | |
| 1985 | |
| 1986 t = defaultType; | |
| 1987 if (t) | |
| 1988 { | |
| 1989 t = t->syntaxCopy(); | |
| 1990 t = t->semantic(loc, sc); | |
| 1991 } | |
| 1992 return t; | |
| 1993 } | |
| 1994 | |
| 1995 /* ======================== TemplateAliasParameter ========================== */ | |
| 1996 | |
| 1997 // alias-parameter | |
| 1998 | |
| 1999 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2000 | |
| 2001 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2002 : TemplateParameter(loc, ident) | |
| 2003 { | |
| 2004 this->ident = ident; | |
| 2005 this->specAliasT = specAliasT; | |
| 2006 this->defaultAlias = defaultAlias; | |
| 2007 | |
| 2008 this->specAlias = NULL; | |
| 2009 } | |
| 2010 | |
| 2011 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2012 { | |
| 2013 return this; | |
| 2014 } | |
| 2015 | |
| 2016 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2017 { | |
| 2018 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2019 if (tp->specAliasT) | |
| 2020 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2021 if (defaultAlias) | |
| 2022 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2023 return tp; | |
| 2024 } | |
| 2025 | |
| 2026 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2027 { | |
| 2028 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2029 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2030 if (!sc->insert(sparam)) | |
| 2031 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2032 } | |
| 2033 | |
| 2034 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2035 { | |
| 2036 if (specAliasT) | |
| 2037 { | |
| 2038 specAlias = specAliasT->toDsymbol(sc); | |
| 2039 if (!specAlias) | |
| 2040 error("%s is not a symbol", specAliasT->toChars()); | |
| 2041 } | |
| 2042 #if 0 // Don't do semantic() until instantiation | |
| 2043 if (defaultAlias) | |
| 2044 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2045 #endif | |
| 2046 } | |
| 2047 | |
| 2048 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2049 { | |
| 2050 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2051 | |
| 2052 if (tap) | |
| 2053 { | |
| 2054 if (specAlias != tap->specAlias) | |
| 2055 goto Lnomatch; | |
| 2056 | |
| 2057 return 1; // match | |
| 2058 } | |
| 2059 | |
| 2060 Lnomatch: | |
| 2061 return 0; | |
| 2062 } | |
| 2063 | |
| 2064 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2065 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2066 Declaration **psparam) | |
| 2067 { | |
| 2068 Dsymbol *sa; | |
| 2069 Object *oarg; | |
| 2070 Expression *ea; | |
| 2071 | |
| 2072 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2073 | |
| 2074 if (i < tiargs->dim) | |
| 2075 oarg = (Object *)tiargs->data[i]; | |
| 2076 else | |
| 2077 { // Get default argument instead | |
| 2078 oarg = defaultArg(sc); | |
| 2079 if (!oarg) | |
| 2080 { assert(i < dedtypes->dim); | |
| 2081 // It might have already been deduced | |
| 2082 oarg = (Object *)dedtypes->data[i]; | |
| 2083 if (!oarg) | |
| 2084 goto Lnomatch; | |
| 2085 } | |
| 2086 } | |
| 2087 | |
| 2088 sa = getDsymbol(oarg); | |
| 2089 if (!sa) | |
| 2090 goto Lnomatch; | |
| 2091 | |
| 2092 if (specAlias) | |
| 2093 { | |
| 2094 if (!sa || sa == sdummy) | |
| 2095 goto Lnomatch; | |
| 2096 if (sa != specAlias) | |
| 2097 goto Lnomatch; | |
| 2098 } | |
| 2099 else if (dedtypes->data[i]) | |
| 2100 { // Must match already deduced symbol | |
| 2101 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2102 | |
| 2103 if (!sa || s != sa) | |
| 2104 goto Lnomatch; | |
| 2105 } | |
| 2106 dedtypes->data[i] = sa; | |
| 2107 | |
| 2108 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2109 return MATCHexact; | |
| 2110 | |
| 2111 Lnomatch: | |
| 2112 *psparam = NULL; | |
| 2113 return MATCHnomatch; | |
| 2114 } | |
| 2115 | |
| 2116 | |
| 2117 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2118 { | |
| 2119 printf(" %s\n", ident->toChars()); | |
| 2120 | |
| 2121 Dsymbol *sa = isDsymbol(oded); | |
| 2122 assert(sa); | |
| 2123 | |
| 2124 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2125 } | |
| 2126 | |
| 2127 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2128 { | |
| 2129 buf->writestring("alias "); | |
| 2130 buf->writestring(ident->toChars()); | |
| 2131 if (specAliasT) | |
| 2132 { | |
| 2133 buf->writestring(" : "); | |
| 2134 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2135 } | |
| 2136 if (defaultAlias) | |
| 2137 { | |
| 2138 buf->writestring(" = "); | |
| 2139 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2140 } | |
| 2141 } | |
| 2142 | |
| 2143 | |
| 2144 void *TemplateAliasParameter::dummyArg() | |
| 2145 { Dsymbol *s; | |
| 2146 | |
| 2147 s = specAlias; | |
| 2148 if (!s) | |
| 2149 { | |
| 2150 if (!sdummy) | |
| 2151 sdummy = new Dsymbol(); | |
| 2152 s = sdummy; | |
| 2153 } | |
| 2154 return (void*)s; | |
| 2155 } | |
| 2156 | |
| 2157 | |
| 2158 Object *TemplateAliasParameter::specialization() | |
| 2159 { | |
| 2160 return specAliasT; | |
| 2161 } | |
| 2162 | |
| 2163 | |
| 2164 Object *TemplateAliasParameter::defaultArg(Scope *sc) | |
| 2165 { | |
| 2166 Dsymbol *s = NULL; | |
| 2167 | |
| 2168 if (defaultAlias) | |
| 2169 { | |
| 2170 s = defaultAlias->toDsymbol(sc); | |
| 2171 if (!s) | |
| 2172 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2173 } | |
| 2174 return s; | |
| 2175 } | |
| 2176 | |
| 2177 /* ======================== TemplateValueParameter ========================== */ | |
| 2178 | |
| 2179 // value-parameter | |
| 2180 | |
| 2181 Expression *TemplateValueParameter::edummy = NULL; | |
| 2182 | |
| 2183 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2184 Expression *specValue, Expression *defaultValue) | |
| 2185 : TemplateParameter(loc, ident) | |
| 2186 { | |
| 2187 this->ident = ident; | |
| 2188 this->valType = valType; | |
| 2189 this->specValue = specValue; | |
| 2190 this->defaultValue = defaultValue; | |
| 2191 } | |
| 2192 | |
| 2193 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2194 { | |
| 2195 return this; | |
| 2196 } | |
| 2197 | |
| 2198 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2199 { | |
| 2200 TemplateValueParameter *tp = | |
| 2201 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2202 tp->valType = valType->syntaxCopy(); | |
| 2203 if (specValue) | |
| 2204 tp->specValue = specValue->syntaxCopy(); | |
| 2205 if (defaultValue) | |
| 2206 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2207 return tp; | |
| 2208 } | |
| 2209 | |
| 2210 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2211 { | |
| 2212 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2213 v->storage_class = STCtemplateparameter; | |
| 2214 if (!sc->insert(v)) | |
| 2215 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2216 sparam = v; | |
| 2217 } | |
| 2218 | |
| 2219 void TemplateValueParameter::semantic(Scope *sc) | |
| 2220 { | |
| 2221 sparam->semantic(sc); | |
| 2222 valType = valType->semantic(loc, sc); | |
| 2223 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2224 valType->ty != Tident) | |
| 2225 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2226 | |
| 2227 if (specValue) | |
| 2228 { Expression *e = specValue; | |
| 2229 | |
| 2230 e = e->semantic(sc); | |
| 2231 e = e->implicitCastTo(sc, valType); | |
| 2232 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2233 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2234 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2235 specValue = e; | |
| 2236 //e->toInteger(); | |
| 2237 } | |
| 2238 | |
| 2239 #if 0 // defer semantic analysis to arg match | |
| 2240 if (defaultValue) | |
| 2241 { Expression *e = defaultValue; | |
| 2242 | |
| 2243 e = e->semantic(sc); | |
| 2244 e = e->implicitCastTo(sc, valType); | |
| 2245 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2246 if (e->op == TOKint64) | |
| 2247 defaultValue = e; | |
| 2248 //e->toInteger(); | |
| 2249 } | |
| 2250 #endif | |
| 2251 } | |
| 2252 | |
| 2253 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2254 { | |
| 2255 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2256 | |
| 2257 if (tvp) | |
| 2258 { | |
| 2259 if (valType != tvp->valType) | |
| 2260 goto Lnomatch; | |
| 2261 | |
| 2262 if (valType && !valType->equals(tvp->valType)) | |
| 2263 goto Lnomatch; | |
| 2264 | |
| 2265 if (specValue != tvp->specValue) | |
| 2266 goto Lnomatch; | |
| 2267 | |
| 2268 return 1; // match | |
| 2269 } | |
| 2270 | |
| 2271 Lnomatch: | |
| 2272 return 0; | |
| 2273 } | |
| 2274 | |
| 2275 | |
| 2276 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2277 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2278 Declaration **psparam) | |
| 2279 { | |
| 2280 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2281 | |
| 2282 Initializer *init; | |
| 2283 Declaration *sparam; | |
| 2284 MATCH m = MATCHexact; | |
| 2285 Expression *ei; | |
| 2286 Object *oarg; | |
| 2287 | |
| 2288 if (i < tiargs->dim) | |
| 2289 oarg = (Object *)tiargs->data[i]; | |
| 2290 else | |
| 2291 { // Get default argument instead | |
| 2292 oarg = defaultArg(sc); | |
| 2293 if (!oarg) | |
| 2294 { assert(i < dedtypes->dim); | |
| 2295 // It might have already been deduced | |
| 2296 oarg = (Object *)dedtypes->data[i]; | |
| 2297 if (!oarg) | |
| 2298 goto Lnomatch; | |
| 2299 } | |
| 2300 } | |
| 2301 | |
| 2302 ei = isExpression(oarg); | |
| 2303 Type *vt; | |
| 2304 | |
| 2305 if (!ei && oarg) | |
| 2306 goto Lnomatch; | |
| 2307 | |
| 2308 if (specValue) | |
| 2309 { | |
| 2310 if (!ei || ei == edummy) | |
| 2311 goto Lnomatch; | |
| 2312 | |
| 2313 Expression *e = specValue; | |
| 2314 | |
| 2315 e = e->semantic(sc); | |
| 2316 e = e->implicitCastTo(sc, valType); | |
| 2317 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2318 | |
| 2319 ei = ei->syntaxCopy(); | |
| 2320 ei = ei->semantic(sc); | |
| 2321 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2322 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2323 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2324 if (!ei->equals(e)) | |
| 2325 goto Lnomatch; | |
| 2326 } | |
| 2327 else if (dedtypes->data[i]) | |
| 2328 { // Must match already deduced value | |
| 2329 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2330 | |
| 2331 if (!ei || !ei->equals(e)) | |
| 2332 goto Lnomatch; | |
| 2333 } | |
| 2334 Lmatch: | |
| 2335 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2336 vt = valType->semantic(0, sc); | |
| 2337 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2338 if (ei->type) | |
| 2339 { | |
| 2340 m = (MATCH)ei->implicitConvTo(vt); | |
| 2341 //printf("m: %d\n", m); | |
| 2342 if (!m) | |
| 2343 goto Lnomatch; | |
| 2344 } | |
| 2345 dedtypes->data[i] = ei; | |
| 2346 | |
| 2347 init = new ExpInitializer(loc, ei); | |
| 2348 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2349 sparam->storage_class = STCconst; | |
| 2350 *psparam = sparam; | |
| 2351 return m; | |
| 2352 | |
| 2353 Lnomatch: | |
| 2354 *psparam = NULL; | |
| 2355 return MATCHnomatch; | |
| 2356 } | |
| 2357 | |
| 2358 | |
| 2359 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2360 { | |
| 2361 printf(" %s\n", ident->toChars()); | |
| 2362 | |
| 2363 Expression *ea = isExpression(oded); | |
| 2364 | |
| 2365 if (specValue) | |
| 2366 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2367 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2368 } | |
| 2369 | |
| 2370 | |
| 2371 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2372 { | |
| 2373 valType->toCBuffer(buf, ident, hgs); | |
| 2374 if (specValue) | |
| 2375 { | |
| 2376 buf->writestring(" : "); | |
| 2377 specValue->toCBuffer(buf, hgs); | |
| 2378 } | |
| 2379 if (defaultValue) | |
| 2380 { | |
| 2381 buf->writestring(" = "); | |
| 2382 defaultValue->toCBuffer(buf, hgs); | |
| 2383 } | |
| 2384 } | |
| 2385 | |
| 2386 | |
| 2387 void *TemplateValueParameter::dummyArg() | |
| 2388 { Expression *e; | |
| 2389 | |
| 2390 e = specValue; | |
| 2391 if (!e) | |
| 2392 { | |
| 2393 // Create a dummy value | |
| 2394 if (!edummy) | |
| 2395 edummy = valType->defaultInit(); | |
| 2396 e = edummy; | |
| 2397 } | |
| 2398 return (void *)e; | |
| 2399 } | |
| 2400 | |
| 2401 | |
| 2402 Object *TemplateValueParameter::specialization() | |
| 2403 { | |
| 2404 return specValue; | |
| 2405 } | |
| 2406 | |
| 2407 | |
| 2408 Object *TemplateValueParameter::defaultArg(Scope *sc) | |
| 2409 { | |
| 2410 Expression *e; | |
| 2411 | |
| 2412 e = defaultValue; | |
| 2413 if (e) | |
| 2414 { | |
| 2415 e = e->syntaxCopy(); | |
| 2416 e = e->semantic(sc); | |
| 2417 } | |
| 2418 return e; | |
| 2419 } | |
| 2420 | |
| 2421 /* ======================== TemplateTupleParameter ========================== */ | |
| 2422 | |
| 2423 // variadic-parameter | |
| 2424 | |
| 2425 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2426 : TemplateParameter(loc, ident) | |
| 2427 { | |
| 2428 this->ident = ident; | |
| 2429 } | |
| 2430 | |
| 2431 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2432 { | |
| 2433 return this; | |
| 2434 } | |
| 2435 | |
| 2436 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2437 { | |
| 2438 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2439 return tp; | |
| 2440 } | |
| 2441 | |
| 2442 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2443 { | |
| 2444 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2445 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2446 if (!sc->insert(sparam)) | |
| 2447 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2448 } | |
| 2449 | |
| 2450 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2451 { | |
| 2452 } | |
| 2453 | |
| 2454 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2455 { | |
| 2456 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2457 | |
| 2458 if (tvp) | |
| 2459 { | |
| 2460 return 1; // match | |
| 2461 } | |
| 2462 | |
| 2463 Lnomatch: | |
| 2464 return 0; | |
| 2465 } | |
| 2466 | |
| 2467 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2468 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2469 Objects *dedtypes, | |
| 2470 Declaration **psparam) | |
| 2471 { | |
| 2472 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2473 | |
| 2474 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2475 * for the variadic parameter. | |
| 2476 */ | |
| 2477 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2478 Tuple *ovar; | |
| 2479 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2480 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2481 else | |
| 2482 { | |
| 2483 ovar = new Tuple(); | |
| 2484 //printf("ovar = %p\n", ovar); | |
| 2485 if (i < tiargs->dim) | |
| 2486 { | |
| 2487 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2488 ovar->objects.setDim(tiargs->dim - i); | |
| 2489 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2490 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2491 } | |
| 2492 } | |
| 2493 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2494 dedtypes->data[i] = (void *)ovar; | |
| 2495 return MATCHexact; | |
| 2496 } | |
| 2497 | |
| 2498 | |
| 2499 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2500 { | |
| 2501 printf(" %s... [", ident->toChars()); | |
| 2502 Tuple *v = isTuple(oded); | |
| 2503 assert(v); | |
| 2504 | |
| 2505 //printf("|%d| ", v->objects.dim); | |
| 2506 for (int i = 0; i < v->objects.dim; i++) | |
| 2507 { | |
| 2508 if (i) | |
| 2509 printf(", "); | |
| 2510 | |
| 2511 Object *o = (Object *)v->objects.data[i]; | |
| 2512 | |
| 2513 Dsymbol *sa = isDsymbol(o); | |
| 2514 if (sa) | |
| 2515 printf("alias: %s", sa->toChars()); | |
| 2516 | |
| 2517 Type *ta = isType(o); | |
| 2518 if (ta) | |
| 2519 printf("type: %s", ta->toChars()); | |
| 2520 | |
| 2521 Expression *ea = isExpression(o); | |
| 2522 if (ea) | |
| 2523 printf("exp: %s", ea->toChars()); | |
| 2524 | |
| 2525 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2526 } | |
| 2527 | |
| 2528 printf("]\n"); | |
| 2529 } | |
| 2530 | |
| 2531 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2532 { | |
| 2533 buf->writestring(ident->toChars()); | |
| 2534 buf->writestring("..."); | |
| 2535 } | |
| 2536 | |
| 2537 | |
| 2538 void *TemplateTupleParameter::dummyArg() | |
| 2539 { | |
| 2540 return NULL; | |
| 2541 } | |
| 2542 | |
| 2543 | |
| 2544 Object *TemplateTupleParameter::specialization() | |
| 2545 { | |
| 2546 return NULL; | |
| 2547 } | |
| 2548 | |
| 2549 | |
| 2550 Object *TemplateTupleParameter::defaultArg(Scope *sc) | |
| 2551 { | |
| 2552 return NULL; | |
| 2553 } | |
| 2554 | |
| 2555 /* ======================== TemplateInstance ================================ */ | |
| 2556 | |
| 2557 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2558 : ScopeDsymbol(NULL) | |
| 2559 { | |
| 2560 #if LOG | |
| 2561 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2562 #endif | |
| 2563 this->loc = loc; | |
| 2564 this->name = ident; | |
| 2565 this->tiargs = NULL; | |
| 2566 this->tempdecl = NULL; | |
| 2567 this->inst = NULL; | |
| 2568 this->argsym = NULL; | |
| 2569 this->aliasdecl = NULL; | |
| 2570 this->semanticdone = 0; | |
| 2571 this->withsym = NULL; | |
| 2572 this->nest = 0; | |
| 2573 this->havetempdecl = 0; | |
| 2574 this->isnested = NULL; | |
| 2575 this->errors = 0; | |
| 2576 } | |
| 2577 | |
| 2578 | |
| 2579 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2580 : ScopeDsymbol(NULL) | |
| 2581 { | |
| 2582 #if LOG | |
| 2583 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2584 #endif | |
| 2585 this->loc = loc; | |
| 2586 this->name = td->ident; | |
| 2587 this->tiargs = tiargs; | |
| 2588 this->tempdecl = td; | |
| 2589 this->inst = NULL; | |
| 2590 this->argsym = NULL; | |
| 2591 this->aliasdecl = NULL; | |
| 2592 this->semanticdone = 0; | |
| 2593 this->withsym = NULL; | |
| 2594 this->nest = 0; | |
| 2595 this->havetempdecl = 1; | |
| 2596 this->isnested = NULL; | |
| 2597 this->errors = 0; | |
| 2598 | |
| 2599 assert((size_t)tempdecl->scope > 0x10000); | |
| 2600 } | |
| 2601 | |
| 2602 | |
| 2603 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 2604 { | |
| 2605 Objects *a = NULL; | |
| 2606 if (objs) | |
| 2607 { a = new Objects(); | |
| 2608 a->setDim(objs->dim); | |
| 2609 for (size_t i = 0; i < objs->dim; i++) | |
| 2610 { | |
| 2611 Type *ta = isType((Object *)objs->data[i]); | |
| 2612 if (ta) | |
| 2613 a->data[i] = ta->syntaxCopy(); | |
| 2614 else | |
| 2615 { | |
| 2616 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 2617 assert(ea); | |
| 2618 a->data[i] = ea->syntaxCopy(); | |
| 2619 } | |
| 2620 } | |
| 2621 } | |
| 2622 return a; | |
| 2623 } | |
| 2624 | |
| 2625 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 2626 { | |
| 2627 TemplateInstance *ti; | |
| 2628 int i; | |
| 2629 | |
| 2630 if (s) | |
| 2631 ti = (TemplateInstance *)s; | |
| 2632 else | |
| 2633 ti = new TemplateInstance(loc, name); | |
| 2634 | |
| 2635 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 2636 | |
| 2637 ScopeDsymbol::syntaxCopy(ti); | |
| 2638 return ti; | |
| 2639 } | |
| 2640 | |
| 2641 | |
| 2642 void TemplateInstance::semantic(Scope *sc) | |
| 2643 { | |
| 2644 if (global.errors) | |
| 2645 { | |
| 2646 if (!global.gag) | |
| 2647 { | |
| 2648 /* Trying to soldier on rarely generates useful messages | |
| 2649 * at this point. | |
| 2650 */ | |
| 2651 fatal(); | |
| 2652 } | |
| 2653 return; | |
| 2654 } | |
| 2655 #if LOG | |
| 2656 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 2657 #endif | |
| 2658 if (inst) // if semantic() was already run | |
| 2659 { | |
| 2660 #if LOG | |
| 2661 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 2662 #endif | |
| 2663 return; | |
| 2664 } | |
| 2665 | |
| 2666 if (semanticdone != 0) | |
| 2667 { | |
| 2668 error(loc, "recursive template expansion"); | |
| 2669 // inst = this; | |
| 2670 return; | |
| 2671 } | |
| 2672 semanticdone = 1; | |
| 2673 | |
| 2674 #if LOG | |
| 2675 printf("\tdo semantic\n"); | |
| 2676 #endif | |
| 2677 if (havetempdecl) | |
| 2678 { | |
| 2679 assert((size_t)tempdecl->scope > 0x10000); | |
| 2680 // Deduce tdtypes | |
| 2681 tdtypes.setDim(tempdecl->parameters->dim); | |
| 2682 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 2683 { | |
| 2684 error("incompatible arguments for template instantiation"); | |
| 2685 inst = this; | |
| 2686 return; | |
| 2687 } | |
| 2688 } | |
| 2689 else | |
| 2690 { | |
| 2691 // Run semantic on each argument, place results in tiargs[] | |
| 2692 semanticTiargs(sc); | |
| 2693 | |
| 2694 tempdecl = findTemplateDeclaration(sc); | |
| 2695 if (tempdecl) | |
| 2696 tempdecl = findBestMatch(sc); | |
| 2697 if (!tempdecl || global.errors) | |
| 2698 { inst = this; | |
| 2699 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 2700 return; // error recovery | |
| 2701 } | |
| 2702 } | |
| 2703 | |
| 2704 isNested(tiargs); | |
| 2705 | |
| 2706 /* See if there is an existing TemplateInstantiation that already | |
| 2707 * implements the typeargs. If so, just refer to that one instead. | |
| 2708 */ | |
| 2709 | |
| 2710 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 2711 { | |
| 2712 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 2713 #if LOG | |
| 2714 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 2715 #endif | |
| 2716 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 2717 | |
| 2718 // Nesting must match | |
| 2719 if (isnested != ti->isnested) | |
| 2720 continue; | |
| 2721 #if 0 | |
| 2722 if (isnested && sc->parent != ti->parent) | |
| 2723 continue; | |
| 2724 #endif | |
| 2725 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 2726 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 2727 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 2728 if (!match(o1, o2, tempdecl, sc)) | |
| 2729 goto L1; | |
| 2730 } | |
| 2731 | |
| 2732 // It's a match | |
| 2733 inst = ti; | |
| 2734 parent = ti->parent; | |
| 2735 #if LOG | |
| 2736 printf("\tit's a match with instance %p\n", inst); | |
| 2737 #endif | |
| 2738 return; | |
| 2739 | |
| 2740 L1: | |
| 2741 ; | |
| 2742 } | |
| 2743 | |
| 2744 /* So, we need to implement 'this' instance. | |
| 2745 */ | |
| 2746 #if LOG | |
| 2747 printf("\timplement template instance '%s'\n", toChars()); | |
| 2748 #endif | |
| 2749 unsigned errorsave = global.errors; | |
| 2750 inst = this; | |
| 2751 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 2752 tempdecl->instances.push(this); | |
| 2753 parent = tempdecl->parent; | |
| 2754 //printf("parent = '%s'\n", parent->kind()); | |
| 2755 | |
| 2756 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 2757 | |
| 2758 #if 1 | |
| 2759 if (isnested) | |
| 2760 parent = isnested; | |
| 2761 #endif | |
| 2762 //printf("parent = '%s'\n", parent->kind()); | |
| 2763 | |
| 2764 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 2765 // will get called on the instance members | |
| 2766 #if 1 | |
| 2767 int dosemantic3 = 0; | |
| 2768 { Array *a; | |
| 2769 int i; | |
| 2770 | |
| 2771 if (sc->scopesym && sc->scopesym->members && !sc->scopesym->isTemplateMixin()) | |
| 2772 { | |
| 2773 //printf("\t1: adding to %s %s\n", sc->scopesym->kind(), sc->scopesym->toChars()); | |
| 2774 a = sc->scopesym->members; | |
| 2775 } | |
| 2776 else | |
| 2777 { Module *m = sc->module->importedFrom; | |
| 2778 //printf("\t2: adding to module %s\n", m->toChars()); | |
| 2779 a = m->members; | |
| 2780 if (m->semanticdone >= 3) | |
| 2781 dosemantic3 = 1; | |
| 2782 } | |
| 2783 for (i = 0; 1; i++) | |
| 2784 { | |
| 2785 if (i == a->dim) | |
| 2786 { | |
| 2787 a->push(this); | |
| 2788 break; | |
| 2789 } | |
| 2790 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 2791 break; | |
| 2792 } | |
| 2793 } | |
| 2794 #endif | |
| 2795 | |
| 2796 // Copy the syntax trees from the TemplateDeclaration | |
| 2797 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 2798 | |
| 2799 // Create our own scope for the template parameters | |
| 2800 Scope *scope = tempdecl->scope; | |
| 2801 if (!scope) | |
| 2802 { | |
| 2803 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 2804 return; | |
| 2805 } | |
| 2806 | |
| 2807 #if LOG | |
| 2808 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 2809 #endif | |
| 2810 argsym = new ScopeDsymbol(); | |
| 2811 argsym->parent = scope->parent; | |
| 2812 scope = scope->push(argsym); | |
| 2813 | |
| 2814 // Declare each template parameter as an alias for the argument type | |
| 2815 declareParameters(scope); | |
| 2816 | |
| 2817 // Add members of template instance to template instance symbol table | |
| 2818 // parent = scope->scopesym; | |
| 2819 symtab = new DsymbolTable(); | |
| 2820 int memnum = 0; | |
| 2821 for (int i = 0; i < members->dim; i++) | |
| 2822 { | |
| 2823 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 2824 #if LOG | |
| 2825 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 2826 #endif | |
| 2827 memnum |= s->addMember(scope, this, memnum); | |
| 2828 } | |
| 2829 #if LOG | |
| 2830 printf("adding members done\n"); | |
| 2831 #endif | |
| 2832 | |
| 2833 /* See if there is only one member of template instance, and that | |
| 2834 * member has the same name as the template instance. | |
| 2835 * If so, this template instance becomes an alias for that member. | |
| 2836 */ | |
| 2837 //printf("members->dim = %d\n", members->dim); | |
| 2838 if (members->dim) | |
| 2839 { | |
| 2840 Dsymbol *s; | |
| 2841 if (Dsymbol::oneMembers(members, &s) && s) | |
| 2842 { | |
| 2843 //printf("s->kind = '%s'\n", s->kind()); | |
| 2844 //s->print(); | |
| 2845 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 2846 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 2847 { | |
| 2848 //printf("setting aliasdecl\n"); | |
| 2849 aliasdecl = new AliasDeclaration(loc, s->ident, s); | |
| 2850 } | |
| 2851 } | |
| 2852 } | |
| 2853 | |
| 2854 // Do semantic() analysis on template instance members | |
| 2855 #if LOG | |
| 2856 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 2857 #endif | |
| 2858 Scope *sc2; | |
| 2859 sc2 = scope->push(this); | |
| 2860 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 2861 sc2->parent = /*isnested ? sc->parent :*/ this; | |
| 2862 | |
| 2863 #if _WIN32 | |
| 2864 __try | |
| 2865 { | |
| 2866 #endif | |
| 2867 for (int i = 0; i < members->dim; i++) | |
| 2868 { | |
| 2869 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 2870 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 2871 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 2872 // if (isnested) | |
| 2873 // s->parent = sc->parent; | |
| 2874 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 2875 s->semantic(sc2); | |
| 2876 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 2877 sc2->module->runDeferredSemantic(); | |
| 2878 } | |
| 2879 #if _WIN32 | |
| 2880 } | |
| 2881 __except (__ehfilter(GetExceptionInformation())) | |
| 2882 { | |
| 2883 global.gag = 0; // ensure error message gets printed | |
| 2884 error("recursive expansion"); | |
| 2885 fatal(); | |
| 2886 } | |
| 2887 #endif | |
| 2888 | |
| 2889 /* If any of the instantiation members didn't get semantic() run | |
| 2890 * on them due to forward references, we cannot run semantic2() | |
| 2891 * or semantic3() yet. | |
| 2892 */ | |
| 2893 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 2894 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 2895 | |
| 2896 if (sd->parent == this) | |
| 2897 goto Laftersemantic; | |
| 2898 } | |
| 2899 | |
| 2900 /* The problem is when to parse the initializer for a variable. | |
| 2901 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 2902 * for initializers inside a function. | |
| 2903 */ | |
| 2904 // if (sc->parent->isFuncDeclaration()) | |
| 2905 | |
| 2906 /* BUG 782: this has problems if the classes this depends on | |
| 2907 * are forward referenced. Find a way to defer semantic() | |
| 2908 * on this template. | |
| 2909 */ | |
| 2910 semantic2(sc2); | |
| 2911 | |
| 2912 if (sc->func || dosemantic3) | |
| 2913 { | |
| 2914 semantic3(sc2); | |
| 2915 } | |
| 2916 | |
| 2917 Laftersemantic: | |
| 2918 sc2->pop(); | |
| 2919 | |
| 2920 scope->pop(); | |
| 2921 | |
| 2922 // Give additional context info if error occurred during instantiation | |
| 2923 if (global.errors != errorsave) | |
| 2924 { | |
| 2925 error("error instantiating"); | |
| 2926 errors = 1; | |
| 2927 if (global.gag) | |
| 2928 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 2929 } | |
| 2930 | |
| 2931 #if LOG | |
| 2932 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 2933 #endif | |
| 2934 } | |
| 2935 | |
| 2936 | |
| 2937 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 2938 { | |
| 2939 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 2940 semanticTiargs(loc, sc, tiargs); | |
| 2941 } | |
| 2942 | |
| 2943 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 2944 { | |
| 2945 // Run semantic on each argument, place results in tiargs[] | |
| 2946 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 2947 if (!tiargs) | |
| 2948 return; | |
| 2949 for (size_t j = 0; j < tiargs->dim; j++) | |
| 2950 { | |
| 2951 Object *o = (Object *)tiargs->data[j]; | |
| 2952 Type *ta = isType(o); | |
| 2953 Expression *ea = isExpression(o); | |
| 2954 Dsymbol *sa = isDsymbol(o); | |
| 2955 | |
| 2956 //printf("1: tiargs->data[%d] = %p, %p, %p\n", j, o, isDsymbol(o), isTuple(o)); | |
| 2957 if (ta) | |
| 2958 { | |
| 2959 //printf("type %s\n", ta->toChars()); | |
| 2960 // It might really be an Expression or an Alias | |
| 2961 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 2962 if (ea) | |
| 2963 { | |
| 2964 ea = ea->semantic(sc); | |
| 2965 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 2966 tiargs->data[j] = ea; | |
| 2967 } | |
| 2968 else if (sa) | |
| 2969 { tiargs->data[j] = sa; | |
| 2970 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 2971 if (d) | |
| 2972 { | |
| 2973 size_t dim = d->objects->dim; | |
| 2974 tiargs->remove(j); | |
| 2975 tiargs->insert(j, d->objects); | |
| 2976 j--; | |
| 2977 } | |
| 2978 } | |
| 2979 else if (ta) | |
| 2980 { | |
| 2981 if (ta->ty == Ttuple) | |
| 2982 { // Expand tuple | |
| 2983 TypeTuple *tt = (TypeTuple *)ta; | |
| 2984 size_t dim = tt->arguments->dim; | |
| 2985 tiargs->remove(j); | |
| 2986 if (dim) | |
| 2987 { tiargs->reserve(dim); | |
| 2988 for (size_t i = 0; i < dim; i++) | |
| 2989 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 2990 tiargs->insert(j + i, arg->type); | |
| 2991 } | |
| 2992 } | |
| 2993 j--; | |
| 2994 } | |
| 2995 else | |
| 2996 tiargs->data[j] = ta; | |
| 2997 } | |
| 2998 else | |
| 2999 { | |
| 3000 assert(global.errors); | |
| 3001 tiargs->data[j] = Type::terror; | |
| 3002 } | |
| 3003 } | |
| 3004 else if (ea) | |
| 3005 { | |
| 3006 if (!ea) | |
| 3007 { assert(global.errors); | |
| 3008 ea = new IntegerExp(0); | |
| 3009 } | |
| 3010 assert(ea); | |
| 3011 ea = ea->semantic(sc); | |
| 3012 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3013 tiargs->data[j] = ea; | |
|
139
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[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3014 if (ea->op == TOKtype) |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3015 tiargs->data[j] = ea->type; |
| 1 | 3016 } |
| 3017 else if (sa) | |
| 3018 { | |
| 3019 } | |
| 3020 else | |
| 3021 { | |
| 3022 assert(0); | |
| 3023 } | |
| 3024 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3025 } | |
| 3026 #if 0 | |
| 3027 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3028 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3029 { | |
| 3030 Object *o = (Object *)tiargs->data[j]; | |
| 3031 Type *ta = isType(o); | |
| 3032 Expression *ea = isExpression(o); | |
| 3033 Dsymbol *sa = isDsymbol(o); | |
| 3034 Tuple *va = isTuple(o); | |
| 3035 | |
| 3036 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3037 } | |
| 3038 #endif | |
| 3039 } | |
| 3040 | |
| 3041 /********************************************** | |
| 3042 * Find template declaration corresponding to template instance. | |
| 3043 */ | |
| 3044 | |
| 3045 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3046 { | |
| 3047 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3048 if (!tempdecl) | |
| 3049 { | |
| 3050 /* Given: | |
| 3051 * foo!( ... ) | |
| 3052 * figure out which TemplateDeclaration foo refers to. | |
| 3053 */ | |
| 3054 Dsymbol *s; | |
| 3055 Dsymbol *scopesym; | |
| 3056 Identifier *id; | |
| 3057 int i; | |
| 3058 | |
| 3059 id = name; | |
| 3060 s = sc->search(loc, id, &scopesym); | |
| 3061 if (!s) | |
| 3062 { error("identifier '%s' is not defined", id->toChars()); | |
| 3063 return NULL; | |
| 3064 } | |
| 3065 #if LOG | |
| 3066 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 92 | 3067 if (s->parent) |
| 3068 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 1 | 3069 #endif |
| 3070 withsym = scopesym->isWithScopeSymbol(); | |
| 3071 | |
| 3072 /* We might have found an alias within a template when | |
| 3073 * we really want the template. | |
| 3074 */ | |
| 3075 TemplateInstance *ti; | |
| 3076 if (s->parent && | |
| 3077 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3078 { | |
| 3079 if ( | |
| 3080 (ti->name == id || | |
| 3081 ti->toAlias()->ident == id) | |
| 3082 && | |
| 3083 ti->tempdecl) | |
| 3084 { | |
| 3085 /* This is so that one can refer to the enclosing | |
| 3086 * template, even if it has the same name as a member | |
| 3087 * of the template, if it has a !(arguments) | |
| 3088 */ | |
| 3089 tempdecl = ti->tempdecl; | |
| 3090 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3091 tempdecl = tempdecl->overroot; // then get the start | |
| 3092 s = tempdecl; | |
| 3093 } | |
| 3094 } | |
| 3095 | |
| 3096 s = s->toAlias(); | |
| 3097 | |
| 3098 /* It should be a TemplateDeclaration, not some other symbol | |
| 3099 */ | |
| 3100 tempdecl = s->isTemplateDeclaration(); | |
| 3101 if (!tempdecl) | |
| 3102 { | |
| 3103 if (!s->parent && global.errors) | |
| 3104 return NULL; | |
| 3105 if (!s->parent && s->getType()) | |
| 3106 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3107 if (!s2) | |
| 3108 { | |
| 3109 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3110 return NULL; | |
| 3111 } | |
| 3112 s = s2; | |
| 3113 } | |
| 3114 #ifdef DEBUG | |
| 3115 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3116 #endif | |
| 3117 //assert(s->parent); | |
| 3118 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3119 if (ti && | |
| 3120 (ti->name == id || | |
| 3121 ti->toAlias()->ident == id) | |
| 3122 && | |
| 3123 ti->tempdecl) | |
| 3124 { | |
| 3125 /* This is so that one can refer to the enclosing | |
| 3126 * template, even if it has the same name as a member | |
| 3127 * of the template, if it has a !(arguments) | |
| 3128 */ | |
| 3129 tempdecl = ti->tempdecl; | |
| 3130 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3131 tempdecl = tempdecl->overroot; // then get the start | |
| 3132 } | |
| 3133 else | |
| 3134 { | |
| 3135 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3136 return NULL; | |
| 3137 } | |
| 3138 } | |
| 3139 } | |
| 3140 else | |
| 3141 assert(tempdecl->isTemplateDeclaration()); | |
| 3142 return tempdecl; | |
| 3143 } | |
| 3144 | |
| 3145 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3146 { | |
| 3147 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3148 * name, look for the best match. | |
| 3149 */ | |
| 3150 TemplateDeclaration *td_ambig = NULL; | |
| 3151 TemplateDeclaration *td_best = NULL; | |
| 3152 MATCH m_best = MATCHnomatch; | |
| 3153 Objects dedtypes; | |
| 3154 | |
| 3155 #if LOG | |
| 3156 printf("TemplateInstance::findBestMatch()\n"); | |
| 3157 #endif | |
| 3158 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3159 { | |
| 3160 MATCH m; | |
| 3161 | |
| 3162 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3163 | |
| 3164 // If more arguments than parameters, | |
| 3165 // then this is no match. | |
| 3166 if (td->parameters->dim < tiargs->dim) | |
| 3167 { | |
| 3168 if (!td->isVariadic()) | |
| 3169 continue; | |
| 3170 } | |
| 3171 | |
| 3172 dedtypes.setDim(td->parameters->dim); | |
| 92 | 3173 dedtypes.zero(); |
| 1 | 3174 if (!td->scope) |
| 3175 { | |
| 3176 error("forward reference to template declaration %s", td->toChars()); | |
| 3177 return NULL; | |
| 3178 } | |
| 3179 m = td->matchWithInstance(this, &dedtypes, 0); | |
| 92 | 3180 //printf("m = %d\n", m); |
| 1 | 3181 if (!m) // no match at all |
| 3182 continue; | |
| 3183 | |
| 3184 #if 1 | |
| 3185 if (m < m_best) | |
| 3186 goto Ltd_best; | |
| 3187 if (m > m_best) | |
| 3188 goto Ltd; | |
| 3189 #else | |
| 3190 if (!m_best) | |
| 3191 goto Ltd; | |
| 3192 #endif | |
| 3193 { | |
| 3194 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3195 int c1 = td->leastAsSpecialized(td_best); | |
| 3196 int c2 = td_best->leastAsSpecialized(td); | |
| 3197 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3198 | |
| 3199 if (c1 && !c2) | |
| 3200 goto Ltd; | |
| 3201 else if (!c1 && c2) | |
| 3202 goto Ltd_best; | |
| 3203 else | |
| 3204 goto Lambig; | |
| 3205 } | |
| 3206 | |
| 3207 Lambig: // td_best and td are ambiguous | |
| 3208 td_ambig = td; | |
| 3209 continue; | |
| 3210 | |
| 3211 Ltd_best: // td_best is the best match so far | |
| 3212 td_ambig = NULL; | |
| 3213 continue; | |
| 3214 | |
| 3215 Ltd: // td is the new best match | |
| 3216 td_ambig = NULL; | |
| 3217 td_best = td; | |
| 3218 m_best = m; | |
| 3219 tdtypes.setDim(dedtypes.dim); | |
| 3220 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3221 continue; | |
| 3222 } | |
| 3223 | |
| 3224 if (!td_best) | |
| 3225 { | |
| 3226 error("%s does not match any template declaration", toChars()); | |
| 3227 return NULL; | |
| 3228 } | |
| 3229 if (td_ambig) | |
| 3230 { | |
| 3231 error("%s matches more than one template declaration, %s and %s", | |
| 3232 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3233 } | |
| 3234 | |
| 3235 /* The best match is td_best | |
| 3236 */ | |
| 3237 tempdecl = td_best; | |
| 3238 | |
| 3239 #if 0 | |
| 3240 /* Cast any value arguments to be same type as value parameter | |
| 3241 */ | |
| 3242 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3243 { Object *o = (Object *)tiargs->data[i]; | |
| 3244 Expression *ea = isExpression(o); // value argument | |
| 3245 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3246 assert(tp); | |
| 3247 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3248 if (tvp) | |
| 3249 { | |
| 3250 assert(ea); | |
| 3251 ea = ea->castTo(tvp->valType); | |
| 3252 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3253 tiargs->data[i] = (Object *)ea; | |
| 3254 } | |
| 3255 } | |
| 3256 #endif | |
| 3257 | |
| 3258 #if LOG | |
| 3259 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3260 #endif | |
| 3261 return tempdecl; | |
| 3262 } | |
| 3263 | |
| 3264 | |
| 3265 /***************************************** | |
| 3266 * Determines if a TemplateInstance will need a nested | |
| 3267 * generation of the TemplateDeclaration. | |
| 3268 */ | |
| 3269 | |
| 3270 int TemplateInstance::isNested(Objects *args) | |
| 3271 { int nested = 0; | |
| 3272 //printf("TemplateInstance::isNested('%s')\n", tempdecl->ident->toChars()); | |
| 3273 | |
| 3274 /* A nested instance happens when an argument references a local | |
| 3275 * symbol that is on the stack. | |
| 3276 */ | |
| 3277 for (size_t i = 0; i < args->dim; i++) | |
| 3278 { Object *o = (Object *)args->data[i]; | |
| 3279 Expression *ea = isExpression(o); | |
| 3280 Dsymbol *sa = isDsymbol(o); | |
| 3281 Tuple *va = isTuple(o); | |
| 3282 if (ea) | |
| 3283 { | |
| 3284 if (ea->op == TOKvar) | |
| 3285 { | |
| 3286 sa = ((VarExp *)ea)->var; | |
| 3287 goto Lsa; | |
| 3288 } | |
| 3289 if (ea->op == TOKfunction) | |
| 3290 { | |
| 3291 sa = ((FuncExp *)ea)->fd; | |
| 3292 goto Lsa; | |
| 3293 } | |
| 3294 } | |
| 3295 else if (sa) | |
| 3296 { | |
| 3297 Lsa: | |
| 3298 Declaration *d = sa->isDeclaration(); | |
| 3299 if (d && !d->isDataseg() && | |
|
139
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3300 #if V2 |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3301 !(d->storage_class & STCmanifest) && |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
130
diff
changeset
|
3302 #endif |
| 1 | 3303 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && |
| 3304 !isTemplateMixin()) | |
| 3305 { | |
| 3306 // if module level template | |
| 3307 if (tempdecl->toParent()->isModule()) | |
| 3308 { | |
| 3309 if (isnested && isnested != d->toParent()) | |
| 3310 error("inconsistent nesting levels %s and %s", isnested->toChars(), d->toParent()->toChars()); | |
| 3311 isnested = d->toParent(); | |
| 3312 nested |= 1; | |
| 3313 } | |
| 3314 else | |
| 3315 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3316 } | |
| 3317 } | |
| 3318 else if (va) | |
| 3319 { | |
| 3320 nested |= isNested(&va->objects); | |
| 3321 } | |
| 3322 } | |
| 3323 return nested; | |
| 3324 } | |
| 3325 | |
| 3326 /**************************************** | |
| 3327 * This instance needs an identifier for name mangling purposes. | |
| 3328 * Create one by taking the template declaration name and adding | |
| 3329 * the type signature for it. | |
| 3330 */ | |
| 3331 | |
| 3332 Identifier *TemplateInstance::genIdent() | |
| 3333 { OutBuffer buf; | |
| 3334 char *id; | |
| 3335 Objects *args; | |
| 3336 | |
| 3337 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3338 id = tempdecl->ident->toChars(); | |
| 3339 buf.printf("__T%zu%s", strlen(id), id); | |
| 3340 args = tiargs; | |
| 3341 for (int i = 0; i < args->dim; i++) | |
| 3342 { Object *o = (Object *)args->data[i]; | |
| 3343 Type *ta = isType(o); | |
| 3344 Expression *ea = isExpression(o); | |
| 3345 Dsymbol *sa = isDsymbol(o); | |
| 3346 Tuple *va = isTuple(o); | |
| 3347 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3348 if (ta) | |
| 3349 { | |
| 3350 buf.writeByte('T'); | |
| 3351 if (ta->deco) | |
| 3352 buf.writestring(ta->deco); | |
| 3353 else | |
| 3354 { | |
| 3355 #ifdef DEBUG | |
| 3356 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3357 #endif | |
| 3358 assert(global.errors); | |
| 3359 } | |
| 3360 } | |
| 3361 else if (ea) | |
| 3362 { sinteger_t v; | |
| 3363 real_t r; | |
| 3364 | |
| 3365 if (ea->op == TOKvar) | |
| 3366 { | |
| 3367 sa = ((VarExp *)ea)->var; | |
| 3368 ea = NULL; | |
| 3369 goto Lsa; | |
| 3370 } | |
| 3371 if (ea->op == TOKfunction) | |
| 3372 { | |
| 3373 sa = ((FuncExp *)ea)->fd; | |
| 3374 ea = NULL; | |
| 3375 goto Lsa; | |
| 3376 } | |
| 3377 buf.writeByte('V'); | |
| 3378 if (ea->op == TOKtuple) | |
| 3379 { ea->error("tuple is not a valid template value argument"); | |
| 3380 continue; | |
| 3381 } | |
| 3382 #if 1 | |
| 19 | 3383 /* Use deco that matches what it would be for a function parameter |
| 3384 */ | |
| 1 | 3385 buf.writestring(ea->type->deco); |
| 3386 #else | |
| 3387 // Use type of parameter, not type of argument | |
| 3388 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3389 assert(tp); | |
| 3390 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3391 assert(tvp); | |
| 3392 buf.writestring(tvp->valType->deco); | |
| 3393 #endif | |
| 3394 ea->toMangleBuffer(&buf); | |
| 3395 } | |
| 3396 else if (sa) | |
| 3397 { | |
| 3398 Lsa: | |
| 3399 buf.writeByte('S'); | |
| 3400 Declaration *d = sa->isDeclaration(); | |
| 3401 if (d && !d->type->deco) | |
| 3402 error("forward reference of %s", d->toChars()); | |
| 3403 else | |
| 3404 { | |
| 3405 char *p = sa->mangle(); | |
| 3406 buf.printf("%zu%s", strlen(p), p); | |
| 3407 } | |
| 3408 } | |
| 3409 else if (va) | |
| 3410 { | |
| 3411 assert(i + 1 == args->dim); // must be last one | |
| 3412 args = &va->objects; | |
| 3413 i = -1; | |
| 3414 } | |
| 3415 else | |
| 3416 assert(0); | |
| 3417 } | |
| 3418 buf.writeByte('Z'); | |
| 3419 id = buf.toChars(); | |
| 3420 buf.data = NULL; | |
| 3421 return new Identifier(id, TOKidentifier); | |
| 3422 } | |
| 3423 | |
| 3424 | |
| 3425 /**************************************************** | |
| 3426 * Declare parameters of template instance, initialize them with the | |
| 3427 * template instance arguments. | |
| 3428 */ | |
| 3429 | |
| 3430 void TemplateInstance::declareParameters(Scope *scope) | |
| 3431 { | |
| 3432 //printf("TemplateInstance::declareParameters()\n"); | |
| 3433 for (int i = 0; i < tdtypes.dim; i++) | |
| 3434 { | |
| 3435 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3436 //Object *o = (Object *)tiargs->data[i]; | |
| 3437 Object *o = (Object *)tdtypes.data[i]; | |
| 3438 | |
| 3439 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3440 tempdecl->declareParameter(scope, tp, o); | |
| 3441 } | |
| 3442 } | |
| 3443 | |
| 3444 | |
| 3445 void TemplateInstance::semantic2(Scope *sc) | |
| 3446 { int i; | |
| 3447 | |
| 3448 if (semanticdone >= 2) | |
| 3449 return; | |
| 3450 semanticdone = 2; | |
| 3451 #if LOG | |
| 3452 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3453 #endif | |
| 3454 if (!errors && members) | |
| 3455 { | |
| 3456 sc = tempdecl->scope; | |
| 3457 assert(sc); | |
| 3458 sc = sc->push(argsym); | |
| 3459 sc = sc->push(this); | |
| 3460 for (i = 0; i < members->dim; i++) | |
| 3461 { | |
| 3462 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3463 #if LOG | |
| 3464 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3465 #endif | |
| 3466 s->semantic2(sc); | |
| 3467 } | |
| 3468 sc = sc->pop(); | |
| 3469 sc->pop(); | |
| 3470 } | |
| 3471 #if LOG | |
| 3472 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3473 #endif | |
| 3474 } | |
| 3475 | |
| 3476 void TemplateInstance::semantic3(Scope *sc) | |
| 3477 { int i; | |
| 3478 | |
| 3479 #if LOG | |
| 3480 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3481 #endif | |
| 3482 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3483 if (semanticdone >= 3) | |
| 3484 return; | |
| 3485 semanticdone = 3; | |
| 3486 if (!errors && members) | |
| 3487 { | |
| 3488 sc = tempdecl->scope; | |
| 3489 sc = sc->push(argsym); | |
| 3490 sc = sc->push(this); | |
| 3491 for (i = 0; i < members->dim; i++) | |
| 3492 { | |
| 3493 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3494 s->semantic3(sc); | |
| 3495 } | |
| 3496 sc = sc->pop(); | |
| 3497 sc->pop(); | |
| 3498 } | |
| 3499 } | |
| 3500 | |
| 3501 void TemplateInstance::toObjFile() | |
| 3502 { int i; | |
| 3503 | |
| 3504 #if LOG | |
| 3505 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3506 #endif | |
| 3507 if (!errors && members) | |
| 3508 { | |
| 3509 for (i = 0; i < members->dim; i++) | |
| 3510 { | |
| 3511 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3512 s->toObjFile(); | |
| 3513 } | |
| 3514 } | |
| 3515 } | |
| 3516 | |
| 3517 void TemplateInstance::inlineScan() | |
| 3518 { int i; | |
| 3519 | |
| 3520 #if LOG | |
| 3521 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3522 #endif | |
| 3523 if (!errors && members) | |
| 3524 { | |
| 3525 for (i = 0; i < members->dim; i++) | |
| 3526 { | |
| 3527 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3528 s->inlineScan(); | |
| 3529 } | |
| 3530 } | |
| 3531 } | |
| 3532 | |
| 3533 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3534 { | |
| 3535 int i; | |
| 3536 | |
| 3537 Identifier *id = name; | |
| 3538 buf->writestring(id->toChars()); | |
| 3539 buf->writestring("!("); | |
| 3540 if (nest) | |
| 3541 buf->writestring("..."); | |
| 3542 else | |
| 3543 { | |
| 3544 nest++; | |
| 3545 Objects *args = tiargs; | |
| 3546 for (i = 0; i < args->dim; i++) | |
| 3547 { | |
| 3548 if (i) | |
| 3549 buf->writeByte(','); | |
| 3550 Object *oarg = (Object *)args->data[i]; | |
| 3551 ObjectToCBuffer(buf, hgs, oarg); | |
| 3552 } | |
| 3553 nest--; | |
| 3554 } | |
| 3555 buf->writeByte(')'); | |
| 3556 } | |
| 3557 | |
| 3558 | |
| 3559 Dsymbol *TemplateInstance::toAlias() | |
| 3560 { | |
| 3561 #if LOG | |
| 3562 printf("TemplateInstance::toAlias()\n"); | |
| 3563 #endif | |
| 3564 if (!inst) | |
| 3565 { error("cannot resolve forward reference"); | |
| 3566 return this; | |
| 3567 } | |
| 3568 | |
| 3569 if (inst != this) | |
| 3570 return inst->toAlias(); | |
| 3571 | |
| 3572 if (aliasdecl) | |
| 3573 return aliasdecl->toAlias(); | |
| 3574 | |
| 3575 return inst; | |
| 3576 } | |
| 3577 | |
| 3578 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 3579 { | |
| 3580 return aliasdecl; | |
| 3581 } | |
| 3582 | |
| 3583 char *TemplateInstance::kind() | |
| 3584 { | |
| 3585 return "template instance"; | |
| 3586 } | |
| 3587 | |
| 3588 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 3589 { | |
| 3590 *ps = NULL; | |
| 3591 return TRUE; | |
| 3592 } | |
| 3593 | |
| 3594 char *TemplateInstance::toChars() | |
| 3595 { | |
| 3596 OutBuffer buf; | |
| 3597 HdrGenState hgs; | |
| 3598 char *s; | |
| 3599 | |
| 3600 toCBuffer(&buf, &hgs); | |
| 3601 s = buf.toChars(); | |
| 3602 buf.data = NULL; | |
| 3603 return s; | |
| 3604 } | |
| 3605 | |
| 3606 /* ======================== TemplateMixin ================================ */ | |
| 3607 | |
| 3608 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 3609 Array *idents, Objects *tiargs) | |
| 3610 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 3611 { | |
| 3612 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 3613 this->ident = ident; | |
| 3614 this->tqual = tqual; | |
| 3615 this->idents = idents; | |
| 3616 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 3617 this->scope = NULL; | |
| 3618 } | |
| 3619 | |
| 3620 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 3621 { TemplateMixin *tm; | |
| 3622 | |
| 3623 Array *ids = new Array(); | |
| 3624 ids->setDim(idents->dim); | |
| 3625 for (int i = 0; i < idents->dim; i++) | |
| 3626 { // Matches TypeQualified::syntaxCopyHelper() | |
| 3627 Identifier *id = (Identifier *)idents->data[i]; | |
| 3628 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 3629 { | |
| 3630 TemplateInstance *ti = (TemplateInstance *)id; | |
| 3631 | |
| 3632 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 3633 id = (Identifier *)ti; | |
| 3634 } | |
| 3635 ids->data[i] = id; | |
| 3636 } | |
| 3637 | |
| 3638 tm = new TemplateMixin(loc, ident, | |
| 3639 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 3640 ids, tiargs); | |
| 3641 TemplateInstance::syntaxCopy(tm); | |
| 3642 return tm; | |
| 3643 } | |
| 3644 | |
| 3645 void TemplateMixin::semantic(Scope *sc) | |
| 3646 { | |
| 3647 #if LOG | |
| 3648 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 3649 fflush(stdout); | |
| 3650 #endif | |
| 3651 if (semanticdone && | |
| 3652 // This for when a class/struct contains mixin members, and | |
| 3653 // is done over because of forward references | |
| 3654 (!parent || !toParent()->isAggregateDeclaration())) | |
| 3655 { | |
| 3656 #if LOG | |
| 3657 printf("\tsemantic done\n"); | |
| 3658 #endif | |
| 3659 return; | |
| 3660 } | |
| 3661 if (!semanticdone) | |
| 3662 semanticdone = 1; | |
| 3663 #if LOG | |
| 3664 printf("\tdo semantic\n"); | |
| 3665 #endif | |
| 3666 | |
| 3667 Scope *scx = NULL; | |
| 3668 if (scope) | |
| 3669 { sc = scope; | |
| 3670 scx = scope; // save so we don't make redundant copies | |
| 3671 scope = NULL; | |
| 3672 } | |
| 3673 | |
| 3674 // Follow qualifications to find the TemplateDeclaration | |
| 3675 if (!tempdecl) | |
| 3676 { Dsymbol *s; | |
| 3677 int i; | |
| 3678 Identifier *id; | |
| 3679 | |
| 3680 if (tqual) | |
| 3681 { s = tqual->toDsymbol(sc); | |
| 3682 i = 0; | |
| 3683 } | |
| 3684 else | |
| 3685 { | |
| 3686 i = 1; | |
| 3687 id = (Identifier *)idents->data[0]; | |
| 3688 switch (id->dyncast()) | |
| 3689 { | |
| 3690 case DYNCAST_IDENTIFIER: | |
| 3691 s = sc->search(loc, id, NULL); | |
| 3692 break; | |
| 3693 | |
| 3694 case DYNCAST_DSYMBOL: | |
| 3695 { | |
| 3696 TemplateInstance *ti = (TemplateInstance *)id; | |
| 3697 ti->semantic(sc); | |
| 3698 s = ti; | |
| 3699 break; | |
| 3700 } | |
| 3701 default: | |
| 3702 assert(0); | |
| 3703 } | |
| 3704 } | |
| 3705 | |
| 3706 for (; i < idents->dim; i++) | |
| 3707 { | |
| 3708 if (!s) | |
| 3709 break; | |
| 3710 id = (Identifier *)idents->data[i]; | |
| 3711 s = s->searchX(loc, sc, id); | |
| 3712 } | |
| 3713 if (!s) | |
| 3714 { | |
| 3715 error("is not defined"); | |
| 3716 inst = this; | |
| 3717 return; | |
| 3718 } | |
| 3719 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 3720 if (!tempdecl) | |
| 3721 { | |
| 3722 error("%s isn't a template", s->toChars()); | |
| 3723 inst = this; | |
| 3724 return; | |
| 3725 } | |
| 3726 } | |
| 3727 | |
| 3728 // Look for forward reference | |
| 3729 assert(tempdecl); | |
| 3730 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3731 { | |
| 3732 if (!td->scope) | |
| 3733 { | |
| 3734 /* Cannot handle forward references if mixin is a struct member, | |
| 3735 * because addField must happen during struct's semantic, not | |
| 3736 * during the mixin semantic. | |
| 3737 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 3738 * semantic. | |
| 3739 */ | |
| 3740 semanticdone = 0; | |
| 3741 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 3742 if (ad) | |
| 3743 ad->sizeok = 2; | |
| 3744 else | |
| 3745 { | |
| 3746 // Forward reference | |
| 3747 //printf("forward reference - deferring\n"); | |
| 3748 scope = scx ? scx : new Scope(*sc); | |
| 3749 scope->setNoFree(); | |
| 3750 scope->module->addDeferredSemantic(this); | |
| 3751 } | |
| 3752 return; | |
| 3753 } | |
| 3754 } | |
| 3755 | |
| 3756 // Run semantic on each argument, place results in tiargs[] | |
| 3757 semanticTiargs(sc); | |
| 3758 | |
| 3759 tempdecl = findBestMatch(sc); | |
| 3760 if (!tempdecl) | |
| 3761 { inst = this; | |
| 3762 return; // error recovery | |
| 3763 } | |
| 3764 | |
| 3765 if (!ident) | |
| 3766 ident = genIdent(); | |
| 3767 | |
| 3768 inst = this; | |
| 3769 parent = sc->parent; | |
| 3770 | |
| 3771 /* Detect recursive mixin instantiations. | |
| 3772 */ | |
| 3773 for (Dsymbol *s = parent; s; s = s->parent) | |
| 3774 { | |
| 3775 //printf("\ts = '%s'\n", s->toChars()); | |
| 3776 TemplateMixin *tm = s->isTemplateMixin(); | |
| 3777 if (!tm || tempdecl != tm->tempdecl) | |
| 3778 continue; | |
| 3779 | |
| 3780 for (int i = 0; i < tiargs->dim; i++) | |
| 3781 { Object *o = (Object *)tiargs->data[i]; | |
| 3782 Type *ta = isType(o); | |
| 3783 Expression *ea = isExpression(o); | |
| 3784 Dsymbol *sa = isDsymbol(o); | |
| 3785 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 3786 if (ta) | |
| 3787 { | |
| 3788 Type *tmta = isType(tmo); | |
| 3789 if (!tmta) | |
| 3790 goto Lcontinue; | |
| 3791 if (!ta->equals(tmta)) | |
| 3792 goto Lcontinue; | |
| 3793 } | |
| 3794 else if (ea) | |
| 3795 { Expression *tme = isExpression(tmo); | |
| 3796 if (!tme || !ea->equals(tme)) | |
| 3797 goto Lcontinue; | |
| 3798 } | |
| 3799 else if (sa) | |
| 3800 { | |
| 3801 Dsymbol *tmsa = isDsymbol(tmo); | |
| 3802 if (sa != tmsa) | |
| 3803 goto Lcontinue; | |
| 3804 } | |
| 3805 else | |
| 3806 assert(0); | |
| 3807 } | |
| 3808 error("recursive mixin instantiation"); | |
| 3809 return; | |
| 3810 | |
| 3811 Lcontinue: | |
| 3812 continue; | |
| 3813 } | |
| 3814 | |
| 3815 // Copy the syntax trees from the TemplateDeclaration | |
| 3816 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3817 if (!members) | |
| 3818 return; | |
| 3819 | |
| 3820 symtab = new DsymbolTable(); | |
| 3821 | |
| 3822 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 3823 { | |
| 3824 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 3825 if (sds) | |
| 3826 { | |
| 3827 sds->importScope(this, PROTpublic); | |
| 3828 break; | |
| 3829 } | |
| 3830 } | |
| 3831 | |
| 3832 #if LOG | |
| 3833 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3834 #endif | |
| 3835 Scope *scy = sc; | |
| 3836 scy = sc->push(this); | |
| 3837 scy->parent = this; | |
| 3838 | |
| 3839 argsym = new ScopeDsymbol(); | |
| 3840 argsym->parent = scy->parent; | |
| 3841 Scope *scope = scy->push(argsym); | |
| 3842 | |
| 92 | 3843 unsigned errorsave = global.errors; |
| 3844 | |
| 1 | 3845 // Declare each template parameter as an alias for the argument type |
| 3846 declareParameters(scope); | |
| 3847 | |
| 3848 // Add members to enclosing scope, as well as this scope | |
| 3849 for (unsigned i = 0; i < members->dim; i++) | |
| 3850 { Dsymbol *s; | |
| 3851 | |
| 3852 s = (Dsymbol *)members->data[i]; | |
| 3853 s->addMember(scope, this, i); | |
| 3854 //sc->insert(s); | |
| 3855 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 3856 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 3857 } | |
| 3858 | |
| 3859 // Do semantic() analysis on template instance members | |
| 3860 #if LOG | |
| 3861 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3862 #endif | |
| 3863 Scope *sc2; | |
| 3864 sc2 = scope->push(this); | |
| 3865 sc2->offset = sc->offset; | |
| 3866 for (int i = 0; i < members->dim; i++) | |
| 3867 { | |
| 3868 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3869 s->semantic(sc2); | |
| 3870 } | |
| 3871 sc->offset = sc2->offset; | |
| 3872 | |
| 3873 /* The problem is when to parse the initializer for a variable. | |
| 3874 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3875 * for initializers inside a function. | |
| 3876 */ | |
| 3877 // if (sc->parent->isFuncDeclaration()) | |
| 3878 | |
| 3879 semantic2(sc2); | |
| 3880 | |
| 3881 if (sc->func) | |
| 3882 { | |
| 3883 semantic3(sc2); | |
| 3884 } | |
| 3885 | |
| 92 | 3886 // Give additional context info if error occurred during instantiation |
| 3887 if (global.errors != errorsave) | |
| 3888 { | |
| 3889 error("error instantiating"); | |
| 3890 } | |
| 3891 | |
| 1 | 3892 sc2->pop(); |
| 3893 | |
| 3894 scope->pop(); | |
| 3895 | |
| 3896 // if (!isAnonymous()) | |
| 3897 { | |
| 3898 scy->pop(); | |
| 3899 } | |
| 3900 #if LOG | |
| 3901 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 3902 #endif | |
| 3903 } | |
| 3904 | |
| 3905 void TemplateMixin::semantic2(Scope *sc) | |
| 3906 { int i; | |
| 3907 | |
| 3908 if (semanticdone >= 2) | |
| 3909 return; | |
| 3910 semanticdone = 2; | |
| 3911 #if LOG | |
| 3912 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 3913 #endif | |
| 3914 if (members) | |
| 3915 { | |
| 3916 assert(sc); | |
| 3917 sc = sc->push(argsym); | |
| 3918 sc = sc->push(this); | |
| 3919 for (i = 0; i < members->dim; i++) | |
| 3920 { | |
| 3921 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3922 #if LOG | |
| 3923 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3924 #endif | |
| 3925 s->semantic2(sc); | |
| 3926 } | |
| 3927 sc = sc->pop(); | |
| 3928 sc->pop(); | |
| 3929 } | |
| 3930 #if LOG | |
| 3931 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 3932 #endif | |
| 3933 } | |
| 3934 | |
| 3935 void TemplateMixin::semantic3(Scope *sc) | |
| 3936 { int i; | |
| 3937 | |
| 3938 if (semanticdone >= 3) | |
| 3939 return; | |
| 3940 semanticdone = 3; | |
| 3941 #if LOG | |
| 3942 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 3943 #endif | |
| 3944 if (members) | |
| 3945 { | |
| 3946 sc = sc->push(argsym); | |
| 3947 sc = sc->push(this); | |
| 3948 for (i = 0; i < members->dim; i++) | |
| 3949 { | |
| 3950 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3951 s->semantic3(sc); | |
| 3952 } | |
| 3953 sc = sc->pop(); | |
| 3954 sc->pop(); | |
| 3955 } | |
| 3956 } | |
| 3957 | |
| 3958 void TemplateMixin::inlineScan() | |
| 3959 { | |
| 3960 TemplateInstance::inlineScan(); | |
| 3961 } | |
| 3962 | |
| 3963 char *TemplateMixin::kind() | |
| 3964 { | |
| 3965 return "mixin"; | |
| 3966 } | |
| 3967 | |
| 3968 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 3969 { | |
| 3970 return Dsymbol::oneMember(ps); | |
| 3971 } | |
| 3972 | |
| 3973 int TemplateMixin::hasPointers() | |
| 3974 { | |
| 3975 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 3976 for (size_t i = 0; i < members->dim; i++) | |
| 3977 { | |
| 3978 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3979 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 3980 if (s->hasPointers()) | |
| 3981 { | |
| 3982 return 1; | |
| 3983 } | |
| 3984 } | |
| 3985 return 0; | |
| 3986 } | |
| 3987 | |
| 3988 char *TemplateMixin::toChars() | |
| 3989 { | |
| 3990 OutBuffer buf; | |
| 3991 HdrGenState hgs; | |
| 3992 char *s; | |
| 3993 | |
| 3994 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 3995 s = buf.toChars(); | |
| 3996 buf.data = NULL; | |
| 3997 return s; | |
| 3998 } | |
| 3999 | |
| 4000 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4001 { | |
| 4002 buf->writestring("mixin "); | |
| 4003 int i; | |
| 4004 for (i = 0; i < idents->dim; i++) | |
| 4005 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4006 | |
| 4007 if (i) | |
| 4008 buf->writeByte('.'); | |
| 4009 buf->writestring(id->toChars()); | |
| 4010 } | |
| 4011 buf->writestring("!("); | |
| 4012 if (tiargs) | |
| 4013 { | |
| 4014 for (i = 0; i < tiargs->dim; i++) | |
| 4015 { if (i) | |
| 4016 buf->writebyte(','); | |
| 4017 Object *oarg = (Object *)tiargs->data[i]; | |
| 4018 Type *t = isType(oarg); | |
| 4019 Expression *e = isExpression(oarg); | |
| 4020 Dsymbol *s = isDsymbol(oarg); | |
| 4021 if (t) | |
| 4022 t->toCBuffer(buf, NULL, hgs); | |
| 4023 else if (e) | |
| 4024 e->toCBuffer(buf, hgs); | |
| 4025 else if (s) | |
| 4026 { | |
| 4027 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4028 buf->writestring(p); | |
| 4029 } | |
| 4030 else if (!oarg) | |
| 4031 { | |
| 4032 buf->writestring("NULL"); | |
| 4033 } | |
| 4034 else | |
| 4035 { | |
| 4036 assert(0); | |
| 4037 } | |
| 4038 } | |
| 4039 } | |
| 4040 buf->writebyte(')'); | |
| 4041 buf->writebyte(';'); | |
| 4042 buf->writenl(); | |
| 4043 } | |
| 4044 | |
| 4045 | |
| 4046 void TemplateMixin::toObjFile() | |
| 4047 { | |
| 4048 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4049 TemplateInstance::toObjFile(); | |
| 4050 } | |
| 4051 |