Mercurial > projects > ldc
annotate dmd/template.c @ 159:5acec6b2eef8 trunk
[svn r175] merged dmd 1.029
| author | ChristianK |
|---|---|
| date | Thu, 01 May 2008 15:15:28 +0200 |
| parents | 0ab29b838084 |
| children | 297690b5d4a5 |
| 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); | |
| 159 | 133 //printf("\t match t1 %p t2 %p, e1 %p e2 %p, s1 %p s2 %p, v1 %p v2 %p\n", t1,t2,e1,e2,s1,s2,v1,v2); |
| 1 | 134 |
| 135 /* A proper implementation of the various equals() overrides | |
| 136 * should make it possible to just do o1->equals(o2), but | |
| 137 * we'll do that another day. | |
| 138 */ | |
| 139 | |
| 140 if (t1) | |
| 141 { | |
| 142 /* if t1 is an instance of ti, then give error | |
| 143 * about recursive expansions. | |
| 144 */ | |
| 145 Dsymbol *s = t1->toDsymbol(sc); | |
| 146 if (s && s->parent) | |
| 147 { TemplateInstance *ti1 = s->parent->isTemplateInstance(); | |
| 148 if (ti1 && ti1->tempdecl == tempdecl) | |
| 149 { | |
| 150 for (Scope *sc1 = sc; sc1; sc1 = sc1->enclosing) | |
| 151 { | |
| 152 if (sc1->scopesym == ti1) | |
| 153 { | |
| 154 error("recursive template expansion for template argument %s", t1->toChars()); | |
| 155 return 1; // fake a match | |
| 156 } | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 if (!t2 || !t1->equals(t2)) | |
| 159 | 162 goto Lnomatch; |
| 1 | 163 } |
| 164 else if (e1) | |
| 165 { | |
| 166 #if 0 | |
| 167 if (e1 && e2) | |
| 168 { | |
| 169 printf("match %d\n", e1->equals(e2)); | |
| 170 e1->print(); | |
| 171 e2->print(); | |
| 159 | 172 e1->type->print(); |
| 173 e2->type->print(); | |
| 1 | 174 } |
| 175 #endif | |
| 159 | 176 if (!e2) |
| 177 goto Lnomatch; | |
| 178 if (!e1->equals(e2)) | |
| 179 goto Lnomatch; | |
| 1 | 180 } |
| 181 else if (s1) | |
| 182 { | |
| 183 //printf("%p %s, %p %s\n", s1, s1->toChars(), s2, s2->toChars()); | |
| 184 if (!s2 || !s1->equals(s2) || s1->parent != s2->parent) | |
| 159 | 185 { |
| 186 goto Lnomatch; | |
| 187 } | |
| 1 | 188 } |
| 189 else if (v1) | |
| 190 { | |
| 191 if (!v2) | |
| 159 | 192 goto Lnomatch; |
| 1 | 193 if (v1->objects.dim != v2->objects.dim) |
| 159 | 194 goto Lnomatch; |
| 1 | 195 for (size_t i = 0; i < v1->objects.dim; i++) |
| 196 { | |
| 197 if (!match((Object *)v1->objects.data[i], | |
| 198 (Object *)v2->objects.data[i], | |
| 199 tempdecl, sc)) | |
| 159 | 200 goto Lnomatch; |
| 1 | 201 } |
| 202 } | |
| 203 return 1; // match | |
| 159 | 204 Lnomatch: |
| 1 | 205 return 0; // nomatch; |
| 206 } | |
| 207 | |
| 208 /**************************************** | |
| 209 */ | |
| 210 | |
| 211 void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg) | |
| 212 { | |
| 92 | 213 //printf("ObjectToCBuffer()\n"); |
| 1 | 214 Type *t = isType(oarg); |
| 215 Expression *e = isExpression(oarg); | |
| 216 Dsymbol *s = isDsymbol(oarg); | |
| 217 Tuple *v = isTuple(oarg); | |
| 218 if (t) | |
| 92 | 219 { //printf("\tt: %s ty = %d\n", t->toChars(), t->ty); |
| 1 | 220 t->toCBuffer(buf, NULL, hgs); |
| 92 | 221 } |
| 1 | 222 else if (e) |
| 223 e->toCBuffer(buf, hgs); | |
| 224 else if (s) | |
| 225 { | |
| 226 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 227 buf->writestring(p); | |
| 228 } | |
| 229 else if (v) | |
| 230 { | |
| 231 Objects *args = &v->objects; | |
| 232 for (size_t i = 0; i < args->dim; i++) | |
| 233 { | |
| 234 if (i) | |
| 235 buf->writeByte(','); | |
| 236 Object *o = (Object *)args->data[i]; | |
| 237 ObjectToCBuffer(buf, hgs, o); | |
| 238 } | |
| 239 } | |
| 240 else if (!oarg) | |
| 241 { | |
| 242 buf->writestring("NULL"); | |
| 243 } | |
| 244 else | |
| 245 { | |
| 246 #ifdef DEBUG | |
| 247 printf("bad Object = %p\n", oarg); | |
| 248 #endif | |
| 249 assert(0); | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 | |
| 254 | |
| 255 /* ======================== TemplateDeclaration ============================= */ | |
| 256 | |
| 257 TemplateDeclaration::TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters, Array *decldefs) | |
| 258 : ScopeDsymbol(id) | |
| 259 { | |
| 260 #if LOG | |
| 261 printf("TemplateDeclaration(this = %p, id = '%s')\n", this, id->toChars()); | |
| 262 #endif | |
| 263 #if 0 | |
| 264 if (parameters) | |
| 265 for (int i = 0; i < parameters->dim; i++) | |
| 266 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 267 //printf("\tparameter[%d] = %p\n", i, tp); | |
| 268 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 269 | |
| 270 if (ttp) | |
| 271 { | |
| 272 printf("\tparameter[%d] = %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 273 } | |
| 274 } | |
| 275 #endif | |
| 276 this->loc = loc; | |
| 277 this->parameters = parameters; | |
| 159 | 278 this->origParameters = parameters; |
| 1 | 279 this->members = decldefs; |
| 280 this->overnext = NULL; | |
| 281 this->overroot = NULL; | |
| 282 this->scope = NULL; | |
| 283 this->onemember = NULL; | |
| 284 } | |
| 285 | |
| 286 Dsymbol *TemplateDeclaration::syntaxCopy(Dsymbol *) | |
| 287 { | |
| 288 //printf("TemplateDeclaration::syntaxCopy()\n"); | |
| 289 TemplateDeclaration *td; | |
| 290 TemplateParameters *p; | |
| 291 Array *d; | |
| 292 | |
| 293 p = NULL; | |
| 294 if (parameters) | |
| 295 { | |
| 296 p = new TemplateParameters(); | |
| 297 p->setDim(parameters->dim); | |
| 298 for (int i = 0; i < p->dim; i++) | |
| 299 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 300 p->data[i] = (void *)tp->syntaxCopy(); | |
| 301 } | |
| 302 } | |
| 303 d = Dsymbol::arraySyntaxCopy(members); | |
| 304 td = new TemplateDeclaration(loc, ident, p, d); | |
| 305 return td; | |
| 306 } | |
| 307 | |
| 308 void TemplateDeclaration::semantic(Scope *sc) | |
| 309 { | |
| 310 #if LOG | |
| 311 printf("TemplateDeclaration::semantic(this = %p, id = '%s')\n", this, ident->toChars()); | |
| 312 #endif | |
| 313 if (scope) | |
| 314 return; // semantic() already run | |
| 315 | |
| 316 if (sc->func) | |
| 317 { | |
| 318 error("cannot declare template at function scope %s", sc->func->toChars()); | |
| 319 } | |
| 320 | |
| 321 if (/*global.params.useArrayBounds &&*/ sc->module) | |
| 322 { | |
| 323 // Generate this function as it may be used | |
| 324 // when template is instantiated in other modules | |
| 325 sc->module->toModuleArray(); | |
| 326 } | |
| 327 | |
| 328 if (/*global.params.useAssert &&*/ sc->module) | |
| 329 { | |
| 330 // Generate this function as it may be used | |
| 331 // when template is instantiated in other modules | |
| 332 sc->module->toModuleAssert(); | |
| 333 } | |
| 334 | |
| 335 /* Remember Scope for later instantiations, but make | |
| 336 * a copy since attributes can change. | |
| 337 */ | |
| 338 this->scope = new Scope(*sc); | |
| 339 this->scope->setNoFree(); | |
| 340 | |
| 341 // Set up scope for parameters | |
| 342 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 343 paramsym->parent = sc->parent; | |
| 344 Scope *paramscope = sc->push(paramsym); | |
| 345 paramscope->parameterSpecialization = 1; | |
| 346 | |
| 159 | 347 if (global.params.doDocComments) |
| 348 { | |
| 349 origParameters = new TemplateParameters(); | |
| 350 origParameters->setDim(parameters->dim); | |
| 351 for (int i = 0; i < parameters->dim; i++) | |
| 352 { | |
| 353 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 354 origParameters->data[i] = (void *)tp->syntaxCopy(); | |
| 355 } | |
| 356 } | |
| 357 | |
| 1 | 358 for (int i = 0; i < parameters->dim; i++) |
| 359 { | |
| 360 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 361 | |
| 362 tp->declareParameter(paramscope); | |
| 363 } | |
| 364 | |
| 365 for (int i = 0; i < parameters->dim; i++) | |
| 366 { | |
| 367 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 368 | |
| 369 tp->semantic(paramscope); | |
| 159 | 370 if (i + 1 != parameters->dim && tp->isTemplateTupleParameter()) |
| 371 error("template tuple parameter must be last one"); | |
| 1 | 372 } |
| 373 | |
| 374 paramscope->pop(); | |
| 375 | |
| 376 if (members) | |
| 377 { | |
| 378 Dsymbol *s; | |
| 379 if (Dsymbol::oneMembers(members, &s)) | |
| 380 { | |
| 381 if (s && s->ident && s->ident->equals(ident)) | |
| 382 { | |
| 383 onemember = s; | |
| 384 s->parent = this; | |
| 385 } | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 /* BUG: should check: | |
| 390 * o no virtual functions or non-static data members of classes | |
| 391 */ | |
| 392 } | |
| 393 | |
| 394 char *TemplateDeclaration::kind() | |
| 395 { | |
| 396 return (onemember && onemember->isAggregateDeclaration()) | |
| 397 ? onemember->kind() | |
| 398 : (char *)"template"; | |
| 399 } | |
| 400 | |
| 401 /********************************** | |
| 402 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 403 * Return !=0 if successful; i.e. no conflict. | |
| 404 */ | |
| 405 | |
| 406 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 407 { | |
| 408 TemplateDeclaration **pf; | |
| 409 TemplateDeclaration *f; | |
| 410 | |
| 411 #if LOG | |
| 412 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 413 #endif | |
| 414 f = s->isTemplateDeclaration(); | |
| 415 if (!f) | |
| 416 return FALSE; | |
| 417 TemplateDeclaration *pthis = this; | |
| 418 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 419 { | |
| 420 #if 0 | |
| 421 // Conflict if TemplateParameter's match | |
| 422 // Will get caught anyway later with TemplateInstance, but | |
| 423 // should check it now. | |
| 424 TemplateDeclaration *f2 = *pf; | |
| 425 | |
| 426 if (f->parameters->dim != f2->parameters->dim) | |
| 427 goto Lcontinue; | |
| 428 | |
| 429 for (int i = 0; i < f->parameters->dim; i++) | |
| 430 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 431 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 432 | |
| 433 if (!p1->overloadMatch(p2)) | |
| 434 goto Lcontinue; | |
| 435 } | |
| 436 | |
| 437 #if LOG | |
| 438 printf("\tfalse: conflict\n"); | |
| 439 #endif | |
| 440 return FALSE; | |
| 441 | |
| 442 Lcontinue: | |
| 443 ; | |
| 444 #endif | |
| 445 } | |
| 446 | |
| 447 f->overroot = this; | |
| 448 *pf = f; | |
| 449 #if LOG | |
| 450 printf("\ttrue: no conflict\n"); | |
| 451 #endif | |
| 452 return TRUE; | |
| 453 } | |
| 454 | |
| 455 /*************************************** | |
| 456 * Given that ti is an instance of this TemplateDeclaration, | |
| 457 * deduce the types of the parameters to this, and store | |
| 458 * those deduced types in dedtypes[]. | |
| 459 * Input: | |
| 460 * flag 1: don't do semantic() because of dummy types | |
| 159 | 461 * 2: don't change types in matchArg() |
| 1 | 462 * Output: |
| 463 * dedtypes deduced arguments | |
| 464 * Return match level. | |
| 465 */ | |
| 466 | |
| 467 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 468 Objects *dedtypes, int flag) | |
| 469 { MATCH m; | |
| 470 int dedtypes_dim = dedtypes->dim; | |
| 471 | |
| 159 | 472 #define LOGM 0 |
| 473 #if LOGM | |
| 474 printf("\n+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); | |
| 1 | 475 #endif |
| 476 | |
| 477 #if 0 | |
| 478 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 479 if (ti->tiargs->dim) | |
| 480 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 481 ti->tiargs->dim, | |
| 482 ti->tiargs->data[0]); | |
| 483 #endif | |
| 484 dedtypes->zero(); | |
| 485 | |
| 486 int parameters_dim = parameters->dim; | |
| 487 int variadic = isVariadic() != NULL; | |
| 488 | |
| 489 // If more arguments than parameters, no match | |
| 490 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 491 { | |
| 159 | 492 #if LOGM |
| 1 | 493 printf(" no match: more arguments than parameters\n"); |
| 494 #endif | |
| 495 return MATCHnomatch; | |
| 496 } | |
| 497 | |
| 498 assert(dedtypes_dim == parameters_dim); | |
| 499 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 500 | |
| 501 // Set up scope for parameters | |
| 502 assert((size_t)scope > 0x10000); | |
| 503 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 504 paramsym->parent = scope->parent; | |
| 505 Scope *paramscope = scope->push(paramsym); | |
| 506 | |
| 507 // Attempt type deduction | |
| 508 m = MATCHexact; | |
| 509 for (int i = 0; i < dedtypes_dim; i++) | |
| 510 { MATCH m2; | |
| 511 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 512 Declaration *sparam; | |
| 513 | |
| 514 //printf("\targument [%d]\n", i); | |
| 159 | 515 #if LOGM |
| 92 | 516 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); |
| 1 | 517 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); |
| 518 if (ttp) | |
| 519 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 520 #endif | |
| 521 | |
| 522 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 92 | 523 //printf("\tm2 = %d\n", m2); |
| 1 | 524 |
| 525 if (m2 == MATCHnomatch) | |
| 526 { | |
| 527 #if 0 | |
| 528 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 529 #endif | |
| 530 goto Lnomatch; | |
| 531 } | |
| 532 | |
| 533 if (m2 < m) | |
| 534 m = m2; | |
| 535 | |
| 536 if (!flag) | |
| 537 sparam->semantic(paramscope); | |
| 538 if (!paramscope->insert(sparam)) | |
| 539 goto Lnomatch; | |
| 540 } | |
| 541 | |
| 542 if (!flag) | |
| 543 { | |
| 544 // Any parameter left without a type gets the type of its corresponding arg | |
| 545 for (int i = 0; i < dedtypes_dim; i++) | |
| 546 { | |
| 547 if (!dedtypes->data[i]) | |
| 548 { assert(i < ti->tiargs->dim); | |
| 549 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 | |
| 159 | 554 #if LOGM |
| 1 | 555 // Print out the results |
| 556 printf("--------------------------\n"); | |
| 557 printf("template %s\n", toChars()); | |
| 558 printf("instance %s\n", ti->toChars()); | |
| 559 if (m) | |
| 560 { | |
| 561 for (int i = 0; i < dedtypes_dim; i++) | |
| 562 { | |
| 563 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 564 Object *oarg; | |
| 565 | |
| 566 printf(" [%d]", i); | |
| 567 | |
| 568 if (i < ti->tiargs->dim) | |
| 569 oarg = (Object *)ti->tiargs->data[i]; | |
| 570 else | |
| 571 oarg = NULL; | |
| 572 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 573 } | |
| 574 } | |
| 575 else | |
| 576 goto Lnomatch; | |
| 577 #endif | |
| 578 | |
| 159 | 579 #if LOGM |
| 1 | 580 printf(" match = %d\n", m); |
| 581 #endif | |
| 582 goto Lret; | |
| 583 | |
| 584 Lnomatch: | |
| 159 | 585 #if LOGM |
| 1 | 586 printf(" no match\n"); |
| 587 #endif | |
| 588 m = MATCHnomatch; | |
| 589 | |
| 590 Lret: | |
| 591 paramscope->pop(); | |
| 159 | 592 #if LOGM |
| 1 | 593 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); |
| 594 #endif | |
| 595 return m; | |
| 596 } | |
| 597 | |
| 598 /******************************************** | |
| 599 * Determine partial specialization order of 'this' vs td2. | |
| 600 * Returns: | |
| 601 * 1 this is at least as specialized as td2 | |
| 602 * 0 td2 is more specialized than this | |
| 603 */ | |
| 604 | |
| 605 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 606 { | |
| 607 /* This works by taking the template parameters to this template | |
| 608 * declaration and feeding them to td2 as if it were a template | |
| 609 * instance. | |
| 610 * If it works, then this template is at least as specialized | |
| 611 * as td2. | |
| 612 */ | |
| 613 | |
| 92 | 614 TemplateInstance ti(0, ident); // create dummy template instance |
| 1 | 615 Objects dedtypes; |
| 616 | |
| 617 #define LOG_LEASTAS 0 | |
| 618 | |
| 619 #if LOG_LEASTAS | |
| 620 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 621 #endif | |
| 622 | |
| 623 // Set type arguments to dummy template instance to be types | |
| 624 // generated from the parameters to this template declaration | |
| 625 ti.tiargs = new Objects(); | |
| 626 ti.tiargs->setDim(parameters->dim); | |
| 627 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 628 { | |
| 629 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 630 | |
| 631 void *p = tp->dummyArg(); | |
| 632 if (p) | |
| 633 ti.tiargs->data[i] = p; | |
| 634 else | |
| 635 ti.tiargs->setDim(i); | |
| 636 } | |
| 637 | |
| 638 // Temporary Array to hold deduced types | |
| 639 //dedtypes.setDim(parameters->dim); | |
| 640 dedtypes.setDim(td2->parameters->dim); | |
| 641 | |
| 642 // Attempt a type deduction | |
| 643 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 644 { | |
| 645 /* A non-variadic template is more specialized than a | |
| 646 * variadic one. | |
| 647 */ | |
| 648 if (isVariadic() && !td2->isVariadic()) | |
| 649 goto L1; | |
| 650 | |
| 651 #if LOG_LEASTAS | |
| 652 printf(" matches, so is least as specialized\n"); | |
| 653 #endif | |
| 654 return 1; | |
| 655 } | |
| 656 L1: | |
| 657 #if LOG_LEASTAS | |
| 658 printf(" doesn't match, so is not as specialized\n"); | |
| 659 #endif | |
| 660 return 0; | |
| 661 } | |
| 662 | |
| 663 | |
| 664 /************************************************* | |
| 665 * Match function arguments against a specific template function. | |
| 666 * Input: | |
| 667 * targsi Expression/Type initial list of template arguments | |
| 668 * fargs arguments to function | |
| 669 * Output: | |
| 670 * dedargs Expression/Type deduced template arguments | |
| 159 | 671 * Returns: |
| 672 * match level | |
| 1 | 673 */ |
| 674 | |
| 130 | 675 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Objects *targsi, Expressions *fargs, |
| 1 | 676 Objects *dedargs) |
| 677 { | |
| 678 size_t i; | |
| 679 size_t nfparams; | |
| 680 size_t nfargs; | |
| 159 | 681 size_t nargsi; // array size of targsi |
| 682 int fptupindex = -1; | |
| 683 int tuple_dim = 0; | |
| 1 | 684 MATCH match = MATCHexact; |
| 685 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 159 | 686 TypeFunction *fdtype; // type of fd |
| 1 | 687 TemplateTupleParameter *tp; |
| 688 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 689 | |
| 690 #if 0 | |
| 130 | 691 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); |
| 1 | 692 for (i = 0; i < fargs->dim; i++) |
| 693 { Expression *e = (Expression *)fargs->data[i]; | |
| 694 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 695 } | |
| 696 #endif | |
| 697 | |
| 698 assert((size_t)scope > 0x10000); | |
| 699 | |
| 700 dedargs->setDim(parameters->dim); | |
| 701 dedargs->zero(); | |
| 702 | |
| 703 dedtypes.setDim(parameters->dim); | |
| 704 dedtypes.zero(); | |
| 705 | |
| 706 // Set up scope for parameters | |
| 707 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 708 paramsym->parent = scope->parent; | |
| 709 Scope *paramscope = scope->push(paramsym); | |
| 710 | |
| 159 | 711 tp = isVariadic(); |
| 712 | |
| 1 | 713 nargsi = 0; |
| 714 if (targsi) | |
| 715 { // Set initial template arguments | |
| 716 | |
| 717 nargsi = targsi->dim; | |
| 718 if (nargsi > parameters->dim) | |
| 159 | 719 { if (!tp) |
| 720 goto Lnomatch; | |
| 721 dedargs->setDim(nargsi); | |
| 722 dedargs->zero(); | |
| 723 } | |
| 1 | 724 |
| 725 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 726 | |
| 727 for (i = 0; i < nargsi; i++) | |
| 728 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 729 MATCH m; | |
| 730 Declaration *sparam; | |
| 731 | |
| 732 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 159 | 733 //printf("\tdeduceType m = %d\n", m); |
| 1 | 734 if (m == MATCHnomatch) |
| 735 goto Lnomatch; | |
| 736 if (m < match) | |
| 737 match = m; | |
| 738 | |
| 739 sparam->semantic(paramscope); | |
| 740 if (!paramscope->insert(sparam)) | |
| 741 goto Lnomatch; | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 assert(fd->type->ty == Tfunction); | |
| 746 fdtype = (TypeFunction *)fd->type; | |
| 747 | |
| 748 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 749 nfargs = fargs->dim; // number of function arguments | |
| 750 | |
| 751 /* Check for match of function arguments with variadic template | |
| 752 * parameter, such as: | |
| 753 * | |
| 754 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 755 * void main() { Foo(1,2,3); } | |
| 756 */ | |
| 757 tp = isVariadic(); | |
| 159 | 758 if (tp) // if variadic |
| 1 | 759 { |
| 760 if (nfparams == 0) // if no function parameters | |
| 761 { | |
| 762 Tuple *t = new Tuple(); | |
| 763 //printf("t = %p\n", t); | |
| 764 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 765 goto L2; | |
| 766 } | |
| 767 else if (nfargs < nfparams - 1) | |
| 768 goto L1; | |
| 769 else | |
| 770 { | |
| 159 | 771 /* Figure out which of the function parameters matches |
| 772 * the tuple template parameter. Do this by matching | |
| 773 * type identifiers. | |
| 774 * Set the index of this function parameter to fptupindex. | |
| 1 | 775 */ |
| 159 | 776 for (fptupindex = 0; fptupindex < nfparams; fptupindex++) |
| 777 { | |
| 778 Argument *fparam = (Argument *)fdtype->parameters->data[fptupindex]; | |
| 779 if (fparam->type->ty != Tident) | |
| 780 continue; | |
| 781 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 782 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 783 continue; | |
| 784 | |
| 785 if (fdtype->varargs) // variadic function doesn't | |
| 786 goto Lnomatch; // go with variadic template | |
| 787 | |
| 788 /* The types of the function arguments | |
| 789 * now form the tuple argument. | |
| 790 */ | |
| 791 Tuple *t = new Tuple(); | |
| 792 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 793 | |
| 794 tuple_dim = nfargs - (nfparams - 1); | |
| 795 t->objects.setDim(tuple_dim); | |
| 796 for (i = 0; i < tuple_dim; i++) | |
| 797 { Expression *farg = (Expression *)fargs->data[fptupindex + i]; | |
| 798 t->objects.data[i] = (void *)farg->type; | |
| 799 } | |
| 800 goto L2; | |
| 1 | 801 } |
| 159 | 802 fptupindex = -1; |
| 1 | 803 } |
| 804 } | |
| 805 | |
| 806 L1: | |
| 807 if (nfparams == nfargs) | |
| 808 ; | |
| 809 else if (nfargs > nfparams) | |
| 810 { | |
| 811 if (fdtype->varargs == 0) | |
| 812 goto Lnomatch; // too many args, no match | |
| 813 match = MATCHconvert; // match ... with a conversion | |
| 814 } | |
| 815 | |
| 816 L2: | |
| 817 // Loop through the function parameters | |
| 159 | 818 for (i = 0; i < nfparams; i++) |
| 1 | 819 { |
| 159 | 820 /* Skip over function parameters which wound up |
| 821 * as part of a template tuple parameter. | |
| 822 */ | |
| 823 if (i == fptupindex) | |
| 824 { if (fptupindex == nfparams - 1) | |
| 825 break; | |
| 826 i += tuple_dim - 1; | |
| 827 continue; | |
| 828 } | |
| 829 | |
| 1 | 830 Argument *fparam = Argument::getNth(fdtype->parameters, i); |
| 831 | |
| 832 if (i >= nfargs) // if not enough arguments | |
| 833 { | |
| 834 if (fparam->defaultArg) | |
| 835 { /* Default arguments do not participate in template argument | |
| 836 * deduction. | |
| 837 */ | |
| 838 goto Lmatch; | |
| 839 } | |
| 840 } | |
| 841 else | |
| 159 | 842 { Expression *farg = (Expression *)fargs->data[i]; |
| 1 | 843 #if 0 |
| 844 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 845 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 846 #endif | |
| 847 | |
| 159 | 848 MATCH m; |
| 1 | 849 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); |
| 850 //printf("\tdeduceType m = %d\n", m); | |
| 851 | |
| 852 /* If no match, see if there's a conversion to a delegate | |
| 853 */ | |
| 854 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 855 { | |
| 856 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 92 | 857 TypeFunction *tf = (TypeFunction *)td->next; |
| 1 | 858 |
| 859 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 860 { | |
| 92 | 861 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); |
| 862 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 1 | 863 m = MATCHconvert; |
| 864 } | |
| 865 //printf("\tm2 = %d\n", m); | |
| 866 } | |
| 867 | |
| 868 if (m) | |
| 869 { if (m < match) | |
| 870 match = m; // pick worst match | |
| 871 continue; | |
| 872 } | |
| 873 } | |
| 874 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 875 goto Lnomatch; | |
| 876 | |
| 877 /* Check for match with function parameter T... | |
| 878 */ | |
| 879 Type *t = fparam->type; | |
| 880 switch (t->ty) | |
| 881 { | |
| 882 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 883 case Tsarray: | |
| 884 case Tarray: | |
| 885 case Tclass: | |
| 886 case Tident: | |
| 887 goto Lmatch; | |
| 888 | |
| 889 default: | |
| 890 goto Lnomatch; | |
| 891 } | |
| 892 } | |
| 893 | |
| 894 Lmatch: | |
| 895 | |
| 896 /* Fill in any missing arguments with their defaults. | |
| 897 */ | |
| 898 for (i = nargsi; i < dedargs->dim; i++) | |
| 899 { | |
| 900 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 159 | 901 //printf("tp[%d] = %s\n", i, tp->ident->toChars()); |
| 902 /* For T:T*, the dedargs is the T*, dedtypes is the T | |
| 903 * But for function templates, we really need them to match | |
| 904 */ | |
| 1 | 905 Object *oarg = (Object *)dedargs->data[i]; |
| 159 | 906 Object *oded = (Object *)dedtypes.data[i]; |
| 907 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, oded); | |
| 1 | 908 if (!oarg) |
| 909 { | |
| 159 | 910 if (oded) |
| 1 | 911 { |
| 912 if (tp->specialization()) | |
| 159 | 913 { /* The specialization can work as long as afterwards |
| 914 * the oded == oarg | |
| 915 */ | |
| 916 Declaration *sparam; | |
| 917 dedargs->data[i] = (void *)oded; | |
| 918 MATCH m2 = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 919 //printf("m2 = %d\n", m2); | |
| 920 if (!m2) | |
| 921 goto Lnomatch; | |
| 922 if (m2 < match) | |
| 923 match = m2; // pick worst match | |
| 924 if (dedtypes.data[i] != oded) | |
| 925 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 926 } | |
| 1 | 927 } |
| 928 else | |
| 159 | 929 { oded = tp->defaultArg(paramscope); |
| 930 if (!oded) | |
| 1 | 931 goto Lnomatch; |
| 932 } | |
| 159 | 933 declareParameter(paramscope, tp, oded); |
| 934 dedargs->data[i] = (void *)oded; | |
| 1 | 935 } |
| 936 } | |
| 937 | |
| 938 #if 0 | |
| 939 for (i = 0; i < dedargs->dim; i++) | |
| 940 { Type *t = (Type *)dedargs->data[i]; | |
| 941 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 942 } | |
| 943 #endif | |
| 944 | |
| 945 paramscope->pop(); | |
| 159 | 946 //printf("\tmatch %d\n", match); |
| 1 | 947 return match; |
| 948 | |
| 949 Lnomatch: | |
| 950 paramscope->pop(); | |
| 951 //printf("\tnomatch\n"); | |
| 952 return MATCHnomatch; | |
| 953 } | |
| 954 | |
| 955 /************************************************** | |
| 956 * Declare template parameter tp with value o. | |
| 957 */ | |
| 958 | |
| 959 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 960 { | |
| 961 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 962 | |
| 963 Type *targ = isType(o); | |
| 964 Expression *ea = isExpression(o); | |
| 965 Dsymbol *sa = isDsymbol(o); | |
| 966 Tuple *va = isTuple(o); | |
| 967 | |
| 968 Dsymbol *s; | |
| 969 | |
| 970 if (targ) | |
| 971 { | |
| 972 //printf("type %s\n", targ->toChars()); | |
| 973 s = new AliasDeclaration(0, tp->ident, targ); | |
| 974 } | |
| 975 else if (sa) | |
| 976 { | |
| 977 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 978 s = new AliasDeclaration(0, tp->ident, sa); | |
| 979 } | |
| 980 else if (ea) | |
| 981 { | |
| 982 // tdtypes.data[i] always matches ea here | |
| 983 Initializer *init = new ExpInitializer(loc, ea); | |
| 984 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 985 assert(tvp); | |
| 986 | |
| 987 VarDeclaration *v = new VarDeclaration(0, tvp->valType, tp->ident, init); | |
| 988 v->storage_class = STCconst; | |
| 989 s = v; | |
| 990 } | |
| 991 else if (va) | |
| 992 { | |
| 993 //printf("\ttuple\n"); | |
| 994 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 995 } | |
| 996 else | |
| 997 { | |
| 998 #ifdef DEBUG | |
| 999 o->print(); | |
| 1000 #endif | |
| 1001 assert(0); | |
| 1002 } | |
| 1003 if (!sc->insert(s)) | |
| 1004 error("declaration %s is already defined", tp->ident->toChars()); | |
| 1005 s->semantic(sc); | |
| 1006 } | |
| 1007 | |
| 1008 /************************************** | |
| 1009 * Determine if TemplateDeclaration is variadic. | |
| 1010 */ | |
| 1011 | |
| 1012 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 1013 { size_t dim = parameters->dim; | |
| 1014 TemplateTupleParameter *tp = NULL; | |
| 1015 | |
| 1016 if (dim) | |
| 1017 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 1018 return tp; | |
| 1019 } | |
| 1020 | |
| 1021 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 1022 { | |
| 1023 return ::isVariadic(parameters); | |
| 1024 } | |
| 1025 | |
| 92 | 1026 /*********************************** |
| 1027 * We can overload templates. | |
| 1028 */ | |
| 1029 | |
| 1030 int TemplateDeclaration::isOverloadable() | |
| 1031 { | |
| 1032 return 1; | |
| 1033 } | |
| 1034 | |
| 1 | 1035 /************************************************* |
| 1036 * Given function arguments, figure out which template function | |
| 1037 * to expand, and return that function. | |
| 1038 * If no match, give error message and return NULL. | |
| 1039 * Input: | |
| 1040 * targsi initial list of template arguments | |
| 1041 * fargs arguments to function | |
| 1042 */ | |
| 1043 | |
| 130 | 1044 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, |
| 1 | 1045 Objects *targsi, Expressions *fargs) |
| 1046 { | |
| 1047 MATCH m_best = MATCHnomatch; | |
| 1048 TemplateDeclaration *td_ambig = NULL; | |
| 1049 TemplateDeclaration *td_best = NULL; | |
| 1050 Objects *tdargs = new Objects(); | |
| 1051 TemplateInstance *ti; | |
| 1052 FuncDeclaration *fd; | |
| 1053 | |
| 1054 #if 0 | |
| 130 | 1055 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); |
| 1 | 1056 printf(" targsi:\n"); |
| 1057 if (targsi) | |
| 1058 { for (int i = 0; i < targsi->dim; i++) | |
| 1059 { Object *arg = (Object *)targsi->data[i]; | |
| 1060 printf("\t%s\n", arg->toChars()); | |
| 1061 } | |
| 1062 } | |
| 1063 printf(" fargs:\n"); | |
| 1064 for (int i = 0; i < fargs->dim; i++) | |
| 1065 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1066 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1067 //printf("\tty = %d\n", arg->type->ty); | |
| 1068 } | |
| 1069 #endif | |
| 1070 | |
| 1071 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1072 { | |
| 1073 if (!td->scope) | |
| 1074 { | |
| 1075 error("forward reference to template %s", td->toChars()); | |
| 1076 goto Lerror; | |
| 1077 } | |
| 1078 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1079 { | |
| 1080 error("is not a function template"); | |
| 1081 goto Lerror; | |
| 1082 } | |
| 1083 | |
| 1084 MATCH m; | |
| 1085 Objects dedargs; | |
| 1086 | |
| 130 | 1087 m = td->deduceFunctionTemplateMatch(targsi, fargs, &dedargs); |
| 1088 //printf("deduceFunctionTemplateMatch = %d\n", m); | |
| 1 | 1089 if (!m) // if no match |
| 1090 continue; | |
| 1091 | |
| 1092 if (m < m_best) | |
| 1093 goto Ltd_best; | |
| 1094 if (m > m_best) | |
| 1095 goto Ltd; | |
| 1096 | |
| 1097 { | |
| 1098 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1099 int c1 = td->leastAsSpecialized(td_best); | |
| 1100 int c2 = td_best->leastAsSpecialized(td); | |
| 1101 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1102 | |
| 159 | 1103 if (c1 > c2) |
| 1 | 1104 goto Ltd; |
| 159 | 1105 else if (c1 < c2) |
| 1 | 1106 goto Ltd_best; |
| 1107 else | |
| 1108 goto Lambig; | |
| 1109 } | |
| 1110 | |
| 1111 Lambig: // td_best and td are ambiguous | |
| 1112 td_ambig = td; | |
| 1113 continue; | |
| 1114 | |
| 1115 Ltd_best: // td_best is the best match so far | |
| 1116 td_ambig = NULL; | |
| 1117 continue; | |
| 1118 | |
| 1119 Ltd: // td is the new best match | |
| 1120 td_ambig = NULL; | |
| 1121 assert((size_t)td->scope > 0x10000); | |
| 1122 td_best = td; | |
| 1123 m_best = m; | |
| 1124 tdargs->setDim(dedargs.dim); | |
| 1125 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1126 continue; | |
| 1127 } | |
| 1128 if (!td_best) | |
| 1129 { | |
| 1130 error(loc, "does not match any template declaration"); | |
| 1131 goto Lerror; | |
| 1132 } | |
| 1133 if (td_ambig) | |
| 1134 { | |
| 1135 error(loc, "%s matches more than one function template declaration, %s and %s", | |
| 1136 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 1137 } | |
| 1138 | |
| 1139 /* The best match is td_best with arguments tdargs. | |
| 1140 * Now instantiate the template. | |
| 1141 */ | |
| 1142 assert((size_t)td_best->scope > 0x10000); | |
| 1143 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1144 ti->semantic(sc); | |
| 1145 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1146 if (!fd) | |
| 1147 goto Lerror; | |
| 1148 return fd; | |
| 1149 | |
| 1150 Lerror: | |
| 1151 { | |
| 1152 OutBuffer buf; | |
| 1153 HdrGenState hgs; | |
| 1154 | |
| 1155 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
| 1156 error(loc, "cannot deduce template function from argument types (%s)", | |
| 1157 buf.toChars()); | |
| 1158 return NULL; | |
| 1159 } | |
| 1160 } | |
| 1161 | |
| 1162 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1163 { | |
| 1164 #if 0 // Should handle template functions | |
| 1165 if (onemember && onemember->isFuncDeclaration()) | |
| 1166 buf->writestring("foo "); | |
| 1167 #endif | |
| 1168 buf->writestring(kind()); | |
| 1169 buf->writeByte(' '); | |
| 1170 buf->writestring(ident->toChars()); | |
| 1171 buf->writeByte('('); | |
| 1172 for (int i = 0; i < parameters->dim; i++) | |
| 1173 { | |
| 1174 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 159 | 1175 if (hgs->ddoc) |
| 1176 tp = (TemplateParameter *)origParameters->data[i]; | |
| 1 | 1177 if (i) |
| 1178 buf->writeByte(','); | |
| 1179 tp->toCBuffer(buf, hgs); | |
| 1180 } | |
| 1181 buf->writeByte(')'); | |
| 1182 | |
| 1183 if (hgs->hdrgen) | |
| 1184 { | |
| 1185 hgs->tpltMember++; | |
| 1186 buf->writenl(); | |
| 1187 buf->writebyte('{'); | |
| 1188 buf->writenl(); | |
| 1189 for (int i = 0; i < members->dim; i++) | |
| 1190 { | |
| 1191 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1192 s->toCBuffer(buf, hgs); | |
| 1193 } | |
| 1194 buf->writebyte('}'); | |
| 1195 buf->writenl(); | |
| 1196 hgs->tpltMember--; | |
| 1197 } | |
| 1198 } | |
| 1199 | |
| 1200 | |
| 1201 char *TemplateDeclaration::toChars() | |
| 1202 { OutBuffer buf; | |
| 1203 HdrGenState hgs; | |
| 1204 | |
| 1205 memset(&hgs, 0, sizeof(hgs)); | |
| 1206 buf.writestring(ident->toChars()); | |
| 1207 buf.writeByte('('); | |
| 1208 for (int i = 0; i < parameters->dim; i++) | |
| 1209 { | |
| 1210 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1211 if (i) | |
| 1212 buf.writeByte(','); | |
| 1213 tp->toCBuffer(&buf, &hgs); | |
| 1214 } | |
| 1215 buf.writeByte(')'); | |
| 1216 buf.writeByte(0); | |
| 1217 return (char *)buf.extractData(); | |
| 1218 } | |
| 1219 | |
| 1220 /* ======================== Type ============================================ */ | |
| 1221 | |
| 1222 /**** | |
| 1223 * Given an identifier, figure out which TemplateParameter it is. | |
| 1224 * Return -1 if not found. | |
| 1225 */ | |
| 1226 | |
| 92 | 1227 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) |
| 1228 { | |
| 1229 for (size_t i = 0; i < parameters->dim; i++) | |
| 1230 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1231 | |
| 1232 if (tp->ident->equals(id)) | |
| 1233 return i; | |
| 1234 } | |
| 1235 return -1; | |
| 1236 } | |
| 1237 | |
| 1 | 1238 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) |
| 1239 { | |
| 1240 assert(tparam->ty == Tident); | |
| 1241 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1242 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1243 if (tident->idents.dim == 0) | |
| 1244 { | |
| 92 | 1245 return templateIdentifierLookup(tident->ident, parameters); |
| 1 | 1246 } |
| 1247 return -1; | |
| 1248 } | |
| 1249 | |
| 1250 /* These form the heart of template argument deduction. | |
| 1251 * Given 'this' being the type argument to the template instance, | |
| 1252 * it is matched against the template declaration parameter specialization | |
| 1253 * 'tparam' to determine the type to be used for the parameter. | |
| 1254 * Example: | |
| 1255 * template Foo(T:T*) // template declaration | |
| 1256 * Foo!(int*) // template instantiation | |
| 1257 * Input: | |
| 1258 * this = int* | |
| 1259 * tparam = T | |
| 1260 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1261 * Output: | |
| 1262 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1263 */ | |
| 1264 | |
| 1265 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1266 Objects *dedtypes) | |
| 1267 { | |
| 1268 //printf("Type::deduceType()\n"); | |
| 1269 //printf("\tthis = %d, ", ty); print(); | |
| 1270 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1271 if (!tparam) | |
| 1272 goto Lnomatch; | |
| 1273 | |
| 1274 if (this == tparam) | |
| 1275 goto Lexact; | |
| 1276 | |
| 1277 if (tparam->ty == Tident) | |
| 1278 { | |
| 1279 // Determine which parameter tparam is | |
| 1280 int i = templateParameterLookup(tparam, parameters); | |
| 1281 if (i == -1) | |
| 1282 { | |
| 1283 if (!sc) | |
| 1284 goto Lnomatch; | |
| 1285 /* BUG: what if tparam is a template instance, that | |
| 1286 * has as an argument another Tident? | |
| 1287 */ | |
| 1288 tparam = tparam->semantic(0, sc); | |
| 1289 assert(tparam->ty != Tident); | |
| 1290 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1291 } | |
| 1292 | |
| 1293 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1294 | |
| 1295 // Found the corresponding parameter tp | |
| 1296 if (!tp->isTemplateTypeParameter()) | |
| 1297 goto Lnomatch; | |
| 1298 Type *at = (Type *)dedtypes->data[i]; | |
| 1299 if (!at) | |
| 1300 { | |
| 1301 dedtypes->data[i] = (void *)this; | |
| 1302 goto Lexact; | |
| 1303 } | |
| 1304 if (equals(at)) | |
| 1305 goto Lexact; | |
| 1306 else if (ty == Tclass && at->ty == Tclass) | |
| 1307 { | |
| 1308 return (MATCH) implicitConvTo(at); | |
| 1309 } | |
| 1310 else if (ty == Tsarray && at->ty == Tarray && | |
| 19 | 1311 nextOf()->equals(at->nextOf())) |
| 1 | 1312 { |
| 1313 goto Lexact; | |
| 1314 } | |
| 1315 else | |
| 1316 goto Lnomatch; | |
| 1317 } | |
| 1318 | |
| 1319 if (ty != tparam->ty) | |
| 1320 goto Lnomatch; | |
| 1321 | |
| 1322 if (nextOf()) | |
| 1323 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1324 | |
| 1325 Lexact: | |
| 1326 return MATCHexact; | |
| 1327 | |
| 1328 Lnomatch: | |
| 1329 return MATCHnomatch; | |
| 1330 } | |
| 1331 | |
| 1332 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1333 Objects *dedtypes) | |
| 1334 { | |
| 1335 #if 0 | |
| 1336 printf("TypeSArray::deduceType()\n"); | |
| 1337 printf("\tthis = %d, ", ty); print(); | |
| 1338 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1339 #endif | |
| 1340 | |
| 1341 // Extra check that array dimensions must match | |
| 1342 if (tparam) | |
| 1343 { | |
| 1344 if (tparam->ty == Tsarray) | |
| 1345 { | |
| 1346 TypeSArray *tp = (TypeSArray *)tparam; | |
| 92 | 1347 |
| 1348 if (tp->dim->op == TOKvar && | |
| 1349 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1350 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1351 // This code matches code in TypeInstance::deduceType() | |
| 1352 if (i == -1) | |
| 1353 goto Lnomatch; | |
| 1354 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1355 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1356 if (!tvp) | |
| 1357 goto Lnomatch; | |
| 1358 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1359 if (e) | |
| 1360 { | |
| 1361 if (!dim->equals(e)) | |
| 1362 goto Lnomatch; | |
| 1363 } | |
| 1364 else | |
| 1365 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1366 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1367 if (!m) | |
| 1368 goto Lnomatch; | |
| 1369 dedtypes->data[i] = dim; | |
| 1370 } | |
| 1371 } | |
| 1372 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1 | 1373 return MATCHnomatch; |
| 1374 } | |
| 1375 else if (tparam->ty == Taarray) | |
| 1376 { | |
| 1377 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1378 if (tp->index->ty == Tident) | |
| 1379 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1380 | |
| 1381 if (tident->idents.dim == 0) | |
| 1382 { Identifier *id = tident->ident; | |
| 1383 | |
| 1384 for (size_t i = 0; i < parameters->dim; i++) | |
| 1385 { | |
| 1386 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1387 | |
| 1388 if (tp->ident->equals(id)) | |
| 1389 { // Found the corresponding template parameter | |
| 1390 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1391 if (!tvp || !tvp->valType->isintegral()) | |
| 1392 goto Lnomatch; | |
| 1393 | |
| 1394 if (dedtypes->data[i]) | |
| 1395 { | |
| 1396 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1397 goto Lnomatch; | |
| 1398 } | |
| 1399 else | |
| 1400 { dedtypes->data[i] = (void *)dim; | |
| 1401 } | |
| 1402 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1403 } | |
| 1404 } | |
| 1405 } | |
| 1406 } | |
| 1407 } | |
| 1408 else if (tparam->ty == Tarray) | |
| 1409 { MATCH m; | |
| 1410 | |
| 1411 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1412 if (m == MATCHexact) | |
| 1413 m = MATCHconvert; | |
| 1414 return m; | |
| 1415 } | |
| 1416 } | |
| 1417 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1418 | |
| 1419 Lnomatch: | |
| 1420 return MATCHnomatch; | |
| 1421 } | |
| 1422 | |
| 1423 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1424 { | |
| 92 | 1425 #if 0 |
| 1426 printf("TypeAArray::deduceType()\n"); | |
| 1427 printf("\tthis = %d, ", ty); print(); | |
| 1428 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1429 #endif | |
| 1 | 1430 |
| 1431 // Extra check that index type must match | |
| 1432 if (tparam && tparam->ty == Taarray) | |
| 1433 { | |
| 1434 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1435 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1436 { | |
| 1437 return MATCHnomatch; | |
| 1438 } | |
| 1439 } | |
| 1440 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1441 } | |
| 1442 | |
| 1443 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1444 { | |
| 1445 //printf("TypeFunction::deduceType()\n"); | |
| 1446 //printf("\tthis = %d, ", ty); print(); | |
| 1447 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1448 | |
| 1449 // Extra check that function characteristics must match | |
| 1450 if (tparam && tparam->ty == Tfunction) | |
| 1451 { | |
| 1452 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1453 if (varargs != tp->varargs || | |
| 1454 linkage != tp->linkage) | |
| 1455 return MATCHnomatch; | |
| 1456 | |
| 1457 size_t nfargs = Argument::dim(this->parameters); | |
| 1458 size_t nfparams = Argument::dim(tp->parameters); | |
| 1459 | |
| 1460 /* See if tuple match | |
| 1461 */ | |
| 1462 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1463 { | |
| 1464 /* See if 'A' of the template parameter matches 'A' | |
| 1465 * of the type of the last function parameter. | |
| 1466 */ | |
| 1467 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1468 if (fparam->type->ty != Tident) | |
| 1469 goto L1; | |
| 1470 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1471 if (tid->idents.dim) | |
| 1472 goto L1; | |
| 1473 | |
| 1474 /* Look through parameters to find tuple matching tid->ident | |
| 1475 */ | |
| 1476 size_t tupi = 0; | |
| 1477 for (; 1; tupi++) | |
| 1478 { if (tupi == parameters->dim) | |
| 1479 goto L1; | |
| 1480 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1481 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1482 if (tup && tup->ident->equals(tid->ident)) | |
| 1483 break; | |
| 1484 } | |
| 1485 | |
| 1486 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1487 * now form the tuple argument. | |
| 1488 */ | |
| 1489 int tuple_dim = nfargs - (nfparams - 1); | |
| 1490 | |
| 1491 /* See if existing tuple, and whether it matches or not | |
| 1492 */ | |
| 1493 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1494 if (o) | |
| 1495 { // Existing deduced argument must be a tuple, and must match | |
| 1496 Tuple *t = isTuple(o); | |
| 1497 if (!t || t->objects.dim != tuple_dim) | |
| 1498 return MATCHnomatch; | |
| 1499 for (size_t i = 0; i < tuple_dim; i++) | |
| 1500 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1501 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1502 return MATCHnomatch; | |
| 1503 } | |
| 1504 } | |
| 1505 else | |
| 1506 { // Create new tuple | |
| 1507 Tuple *t = new Tuple(); | |
| 1508 t->objects.setDim(tuple_dim); | |
| 1509 for (size_t i = 0; i < tuple_dim; i++) | |
| 1510 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1511 t->objects.data[i] = (void *)arg->type; | |
| 1512 } | |
| 1513 dedtypes->data[tupi] = (void *)t; | |
| 1514 } | |
| 1515 nfparams--; // don't consider the last parameter for type deduction | |
| 1516 goto L2; | |
| 1517 } | |
| 1518 | |
| 1519 L1: | |
| 1520 if (nfargs != nfparams) | |
| 1521 return MATCHnomatch; | |
| 1522 L2: | |
| 1523 for (size_t i = 0; i < nfparams; i++) | |
| 1524 { | |
| 1525 Argument *a = Argument::getNth(this->parameters, i); | |
| 1526 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1527 if (a->storageClass != ap->storageClass || | |
| 1528 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1529 return MATCHnomatch; | |
| 1530 } | |
| 1531 } | |
| 1532 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1533 } | |
| 1534 | |
| 1535 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1536 { | |
| 1537 // Extra check | |
| 1538 if (tparam && tparam->ty == Tident) | |
| 1539 { | |
| 1540 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1541 | |
| 1542 for (int i = 0; i < idents.dim; i++) | |
| 1543 { | |
| 1544 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1545 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1546 | |
| 1547 if (!id1->equals(id2)) | |
| 1548 return MATCHnomatch; | |
| 1549 } | |
| 1550 } | |
| 1551 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1552 } | |
| 1553 | |
| 1554 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1555 Type *tparam, TemplateParameters *parameters, | |
| 1556 Objects *dedtypes) | |
| 1557 { | |
| 1558 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1559 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1560 | |
| 1561 // Extra check | |
| 1562 if (tparam && tparam->ty == Tinstance) | |
| 1563 { | |
| 1564 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1565 | |
| 1566 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1567 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1568 if (!tp->tempinst->tempdecl) | |
| 92 | 1569 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); |
| 1570 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1571 { | |
| 1572 /* Handle case of: | |
| 1573 * template Foo(T : sa!(T), alias sa) | |
| 1574 */ | |
| 1575 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1576 if (i == -1) | |
| 159 | 1577 { /* Didn't find it as a parameter identifier. Try looking |
| 1578 * it up and seeing if is an alias. See Bugzilla 1454 | |
| 1579 */ | |
| 1580 Dsymbol *s = tempinst->tempdecl->scope->search(0, tp->tempinst->name, NULL); | |
| 1581 if (s) | |
| 1582 { | |
| 1583 s = s->toAlias(); | |
| 1584 TemplateDeclaration *td = s->isTemplateDeclaration(); | |
| 1585 if (td && td == tempinst->tempdecl) | |
| 1586 goto L2; | |
| 1587 } | |
| 92 | 1588 goto Lnomatch; |
| 159 | 1589 } |
| 92 | 1590 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; |
| 1591 // This logic duplicates tpx->matchArg() | |
| 1592 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1593 if (!ta) | |
| 1594 goto Lnomatch; | |
| 1595 Dsymbol *sa = tempinst->tempdecl; | |
| 1596 if (!sa) | |
| 1597 goto Lnomatch; | |
| 1598 if (ta->specAlias && sa != ta->specAlias) | |
| 1599 goto Lnomatch; | |
| 1600 if (dedtypes->data[i]) | |
| 1601 { // Must match already deduced symbol | |
| 1602 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1603 | |
| 1604 if (s != sa) | |
| 1605 goto Lnomatch; | |
| 1606 } | |
| 1607 dedtypes->data[i] = sa; | |
| 1608 } | |
| 1 | 1609 } |
| 1610 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1611 goto Lnomatch; | |
| 1612 | |
| 159 | 1613 L2: |
|
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
|
1614 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
|
1615 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
|
1616 |
| 1 | 1617 for (int i = 0; i < tempinst->tiargs->dim; i++) |
| 1618 { | |
| 159 | 1619 //printf("\ttest: tempinst->tiargs[%d]\n", i); |
| 1620 int j; | |
| 1 | 1621 Object *o1 = (Object *)tempinst->tiargs->data[i]; |
| 1622 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1623 | |
| 1624 Type *t1 = isType(o1); | |
| 1625 Type *t2 = isType(o2); | |
| 1626 | |
| 1627 Expression *e1 = isExpression(o1); | |
| 1628 Expression *e2 = isExpression(o2); | |
| 1629 | |
| 1630 #if 0 | |
| 1631 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1632 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1633 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1634 if (e2) printf("e2 = %s\n", e2->toChars()); | |
| 1635 #endif | |
| 1636 | |
| 1637 if (t1 && t2) | |
| 1638 { | |
| 1639 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1640 goto Lnomatch; | |
| 1641 } | |
| 1642 else if (e1 && e2) | |
| 1643 { | |
| 1644 if (!e1->equals(e2)) | |
| 159 | 1645 { if (e2->op == TOKvar) |
| 1646 { | |
| 1647 /* | |
| 1648 * (T:Number!(e2), int e2) | |
| 1649 */ | |
| 1650 j = templateIdentifierLookup(((VarExp *)e2)->var->ident, parameters); | |
| 1651 goto L1; | |
| 1652 } | |
| 1 | 1653 goto Lnomatch; |
| 159 | 1654 } |
| 1 | 1655 } |
| 1656 else if (e1 && t2 && t2->ty == Tident) | |
| 159 | 1657 { |
| 1658 j = templateParameterLookup(t2, parameters); | |
| 1659 L1: | |
| 1660 if (j == -1) | |
| 1 | 1661 goto Lnomatch; |
| 159 | 1662 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; |
| 1 | 1663 // BUG: use tp->matchArg() instead of the following |
| 1664 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1665 if (!tv) | |
| 1666 goto Lnomatch; | |
| 159 | 1667 Expression *e = (Expression *)dedtypes->data[j]; |
| 1 | 1668 if (e) |
| 1669 { | |
| 1670 if (!e1->equals(e)) | |
| 1671 goto Lnomatch; | |
| 1672 } | |
| 1673 else | |
| 1674 { Type *vt = tv->valType->semantic(0, sc); | |
| 1675 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1676 if (!m) | |
| 1677 goto Lnomatch; | |
| 159 | 1678 dedtypes->data[j] = e1; |
| 1 | 1679 } |
| 1680 } | |
| 1681 // BUG: Need to handle alias and tuple parameters | |
| 1682 else | |
| 1683 goto Lnomatch; | |
| 1684 } | |
| 1685 } | |
| 1686 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1687 | |
| 1688 Lnomatch: | |
| 1689 return MATCHnomatch; | |
| 1690 } | |
| 1691 | |
| 1692 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1693 { | |
| 1694 //printf("TypeStruct::deduceType()\n"); | |
| 1695 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1696 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1697 | |
| 1698 /* If this struct is a template struct, and we're matching | |
| 1699 * it against a template instance, convert the struct type | |
| 1700 * to a template instance, too, and try again. | |
| 1701 */ | |
| 1702 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1703 | |
| 1704 if (tparam && tparam->ty == Tinstance) | |
| 1705 { | |
| 1706 if (ti && ti->toAlias() == sym) | |
| 1707 { | |
| 1708 TypeInstance *t = new TypeInstance(0, ti); | |
| 1709 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1710 } | |
| 1711 | |
| 1712 /* Match things like: | |
| 1713 * S!(T).foo | |
| 1714 */ | |
| 1715 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1716 if (tpi->idents.dim) | |
| 1717 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1718 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1719 { | |
| 1720 Type *tparent = sym->parent->getType(); | |
| 1721 if (tparent) | |
| 1722 { | |
| 1723 /* Slice off the .foo in S!(T).foo | |
| 1724 */ | |
| 1725 tpi->idents.dim--; | |
| 1726 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1727 tpi->idents.dim++; | |
| 1728 return m; | |
| 1729 } | |
| 1730 } | |
| 1731 } | |
| 1732 } | |
| 1733 | |
| 1734 // Extra check | |
| 1735 if (tparam && tparam->ty == Tstruct) | |
| 1736 { | |
| 1737 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1738 | |
| 1739 if (sym != tp->sym) | |
| 1740 return MATCHnomatch; | |
| 1741 } | |
| 1742 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1743 } | |
| 1744 | |
| 1745 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1746 { | |
| 1747 // Extra check | |
| 1748 if (tparam && tparam->ty == Tenum) | |
| 1749 { | |
| 1750 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1751 | |
| 1752 if (sym != tp->sym) | |
| 1753 return MATCHnomatch; | |
| 1754 } | |
| 1755 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1756 } | |
| 1757 | |
| 1758 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1759 { | |
| 1760 // Extra check | |
| 1761 if (tparam && tparam->ty == Ttypedef) | |
| 1762 { | |
| 1763 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 1764 | |
| 1765 if (sym != tp->sym) | |
| 1766 return MATCHnomatch; | |
| 1767 } | |
| 1768 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1769 } | |
| 1770 | |
| 1771 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1772 { | |
| 1773 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 1774 | |
| 1775 /* If this class is a template class, and we're matching | |
| 1776 * it against a template instance, convert the class type | |
| 1777 * to a template instance, too, and try again. | |
| 1778 */ | |
| 1779 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1780 | |
| 1781 if (tparam && tparam->ty == Tinstance) | |
| 1782 { | |
| 1783 if (ti && ti->toAlias() == sym) | |
| 1784 { | |
| 1785 TypeInstance *t = new TypeInstance(0, ti); | |
| 1786 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1787 } | |
| 1788 | |
| 1789 /* Match things like: | |
| 1790 * S!(T).foo | |
| 1791 */ | |
| 1792 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1793 if (tpi->idents.dim) | |
| 1794 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1795 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1796 { | |
| 1797 Type *tparent = sym->parent->getType(); | |
| 1798 if (tparent) | |
| 1799 { | |
| 1800 /* Slice off the .foo in S!(T).foo | |
| 1801 */ | |
| 1802 tpi->idents.dim--; | |
| 1803 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1804 tpi->idents.dim++; | |
| 1805 return m; | |
| 1806 } | |
| 1807 } | |
| 1808 } | |
| 1809 } | |
| 1810 | |
| 1811 // Extra check | |
| 1812 if (tparam && tparam->ty == Tclass) | |
| 1813 { | |
| 1814 TypeClass *tp = (TypeClass *)tparam; | |
| 1815 | |
| 1816 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 1817 return (MATCH) implicitConvTo(tp); | |
| 1818 } | |
| 1819 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1820 } | |
| 1821 | |
| 1822 /* ======================== TemplateParameter =============================== */ | |
| 1823 | |
| 1824 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 1825 { | |
| 1826 this->loc = loc; | |
| 1827 this->ident = ident; | |
| 1828 this->sparam = NULL; | |
| 1829 } | |
| 1830 | |
| 1831 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 1832 { | |
| 1833 return NULL; | |
| 1834 } | |
| 1835 | |
| 1836 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 1837 { | |
| 1838 return NULL; | |
| 1839 } | |
| 1840 | |
| 1841 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 1842 { | |
| 1843 return NULL; | |
| 1844 } | |
| 1845 | |
| 1846 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 1847 { | |
| 1848 return NULL; | |
| 1849 } | |
| 1850 | |
| 1851 /* ======================== TemplateTypeParameter =========================== */ | |
| 1852 | |
| 1853 // type-parameter | |
| 1854 | |
| 1855 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 1856 Type *defaultType) | |
| 1857 : TemplateParameter(loc, ident) | |
| 1858 { | |
| 1859 this->ident = ident; | |
| 1860 this->specType = specType; | |
| 1861 this->defaultType = defaultType; | |
| 1862 } | |
| 1863 | |
| 1864 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 1865 { | |
| 1866 return this; | |
| 1867 } | |
| 1868 | |
| 1869 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 1870 { | |
| 1871 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 1872 if (tp->specType) | |
| 1873 tp->specType = specType->syntaxCopy(); | |
| 1874 if (defaultType) | |
| 1875 tp->defaultType = defaultType->syntaxCopy(); | |
| 1876 return tp; | |
| 1877 } | |
| 1878 | |
| 1879 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 1880 { | |
| 1881 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 1882 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 1883 sparam = new AliasDeclaration(loc, ident, ti); | |
| 1884 if (!sc->insert(sparam)) | |
| 1885 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 1886 } | |
| 1887 | |
| 1888 void TemplateTypeParameter::semantic(Scope *sc) | |
| 1889 { | |
| 1890 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 1891 if (specType) | |
| 1892 { | |
| 1893 specType = specType->semantic(loc, sc); | |
| 1894 } | |
| 1895 #if 0 // Don't do semantic() until instantiation | |
| 1896 if (defaultType) | |
| 1897 { | |
| 1898 defaultType = defaultType->semantic(loc, sc); | |
| 1899 } | |
| 1900 #endif | |
| 1901 } | |
| 1902 | |
| 1903 /**************************************** | |
| 1904 * Determine if two TemplateParameters are the same | |
| 1905 * as far as TemplateDeclaration overloading goes. | |
| 1906 * Returns: | |
| 1907 * 1 match | |
| 1908 * 0 no match | |
| 1909 */ | |
| 1910 | |
| 1911 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 1912 { | |
| 1913 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 1914 | |
| 1915 if (ttp) | |
| 1916 { | |
| 1917 if (specType != ttp->specType) | |
| 1918 goto Lnomatch; | |
| 1919 | |
| 1920 if (specType && !specType->equals(ttp->specType)) | |
| 1921 goto Lnomatch; | |
| 1922 | |
| 1923 return 1; // match | |
| 1924 } | |
| 1925 | |
| 1926 Lnomatch: | |
| 1927 return 0; | |
| 1928 } | |
| 1929 | |
| 1930 /******************************************* | |
| 1931 * Match to a particular TemplateParameter. | |
| 1932 * Input: | |
| 1933 * i i'th argument | |
| 1934 * tiargs[] actual arguments to template instance | |
| 1935 * parameters[] template parameters | |
| 1936 * dedtypes[] deduced arguments to template instance | |
| 1937 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 1938 */ | |
| 1939 | |
| 1940 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 1941 int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 1942 Declaration **psparam) | |
| 1943 { | |
| 1944 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 1945 Type *t; | |
| 1946 Object *oarg; | |
| 1947 MATCH m = MATCHexact; | |
| 1948 Type *ta; | |
| 1949 | |
| 1950 if (i < tiargs->dim) | |
| 1951 oarg = (Object *)tiargs->data[i]; | |
| 1952 else | |
| 1953 { // Get default argument instead | |
| 1954 oarg = defaultArg(sc); | |
| 1955 if (!oarg) | |
| 1956 { assert(i < dedtypes->dim); | |
| 1957 // It might have already been deduced | |
| 1958 oarg = (Object *)dedtypes->data[i]; | |
| 1959 if (!oarg) | |
| 1960 goto Lnomatch; | |
| 1961 } | |
| 1962 } | |
| 1963 | |
| 1964 ta = isType(oarg); | |
| 1965 if (!ta) | |
| 1966 goto Lnomatch; | |
| 1967 //printf("ta is %s\n", ta->toChars()); | |
| 1968 | |
| 1969 t = (Type *)dedtypes->data[i]; | |
| 1970 | |
| 1971 if (specType) | |
| 1972 { | |
| 1973 //printf("\tcalling deduceType(), specType is %s\n", specType->toChars()); | |
| 1974 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 1975 if (m2 == MATCHnomatch) | |
| 1976 { //printf("\tfailed deduceType\n"); | |
| 1977 goto Lnomatch; | |
| 1978 } | |
| 1979 | |
| 1980 if (m2 < m) | |
| 1981 m = m2; | |
| 1982 t = (Type *)dedtypes->data[i]; | |
| 1983 } | |
| 1984 else | |
| 1985 { | |
| 1986 m = MATCHconvert; | |
| 1987 if (t) | |
| 1988 { // Must match already deduced type | |
| 1989 | |
| 92 | 1990 m = MATCHexact; |
| 1 | 1991 if (!t->equals(ta)) |
| 1992 goto Lnomatch; | |
| 1993 } | |
| 1994 } | |
| 1995 | |
| 1996 if (!t) | |
| 1997 { | |
| 1998 dedtypes->data[i] = ta; | |
| 1999 t = ta; | |
| 2000 } | |
| 2001 *psparam = new AliasDeclaration(loc, ident, t); | |
| 2002 //printf("\tm = %d\n", m); | |
| 2003 return m; | |
| 2004 | |
| 2005 Lnomatch: | |
| 2006 *psparam = NULL; | |
| 2007 //printf("\tm = %d\n", MATCHnomatch); | |
| 2008 return MATCHnomatch; | |
| 2009 } | |
| 2010 | |
| 2011 | |
| 2012 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 2013 { | |
| 2014 printf(" %s\n", ident->toChars()); | |
| 2015 | |
| 2016 Type *t = isType(oarg); | |
| 2017 Type *ta = isType(oded); | |
| 2018 | |
| 2019 assert(ta); | |
| 2020 | |
| 2021 if (specType) | |
| 2022 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 2023 if (defaultType) | |
| 2024 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 2025 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 2026 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 2027 } | |
| 2028 | |
| 2029 | |
| 2030 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2031 { | |
| 2032 buf->writestring(ident->toChars()); | |
| 2033 if (specType) | |
| 2034 { | |
| 2035 buf->writestring(" : "); | |
| 2036 specType->toCBuffer(buf, NULL, hgs); | |
| 2037 } | |
| 2038 if (defaultType) | |
| 2039 { | |
| 2040 buf->writestring(" = "); | |
| 2041 defaultType->toCBuffer(buf, NULL, hgs); | |
| 2042 } | |
| 2043 } | |
| 2044 | |
| 2045 | |
| 2046 void *TemplateTypeParameter::dummyArg() | |
| 2047 { Type *t; | |
| 2048 | |
| 2049 if (specType) | |
| 2050 t = specType; | |
| 2051 else | |
| 2052 { // Use this for alias-parameter's too (?) | |
| 2053 t = new TypeIdentifier(loc, ident); | |
| 2054 } | |
| 2055 return (void *)t; | |
| 2056 } | |
| 2057 | |
| 2058 | |
| 2059 Object *TemplateTypeParameter::specialization() | |
| 2060 { | |
| 2061 return specType; | |
| 2062 } | |
| 2063 | |
| 2064 | |
| 2065 Object *TemplateTypeParameter::defaultArg(Scope *sc) | |
| 2066 { | |
| 2067 Type *t; | |
| 2068 | |
| 2069 t = defaultType; | |
| 2070 if (t) | |
| 2071 { | |
| 2072 t = t->syntaxCopy(); | |
| 2073 t = t->semantic(loc, sc); | |
| 2074 } | |
| 2075 return t; | |
| 2076 } | |
| 2077 | |
| 2078 /* ======================== TemplateAliasParameter ========================== */ | |
| 2079 | |
| 2080 // alias-parameter | |
| 2081 | |
| 2082 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2083 | |
| 2084 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2085 : TemplateParameter(loc, ident) | |
| 2086 { | |
| 2087 this->ident = ident; | |
| 2088 this->specAliasT = specAliasT; | |
| 2089 this->defaultAlias = defaultAlias; | |
| 2090 | |
| 2091 this->specAlias = NULL; | |
| 2092 } | |
| 2093 | |
| 2094 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2095 { | |
| 2096 return this; | |
| 2097 } | |
| 2098 | |
| 2099 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2100 { | |
| 2101 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2102 if (tp->specAliasT) | |
| 2103 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2104 if (defaultAlias) | |
| 2105 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2106 return tp; | |
| 2107 } | |
| 2108 | |
| 2109 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2110 { | |
| 2111 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2112 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2113 if (!sc->insert(sparam)) | |
| 2114 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2115 } | |
| 2116 | |
| 2117 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2118 { | |
| 2119 if (specAliasT) | |
| 2120 { | |
| 2121 specAlias = specAliasT->toDsymbol(sc); | |
| 2122 if (!specAlias) | |
| 2123 error("%s is not a symbol", specAliasT->toChars()); | |
| 2124 } | |
| 2125 #if 0 // Don't do semantic() until instantiation | |
| 2126 if (defaultAlias) | |
| 2127 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2128 #endif | |
| 2129 } | |
| 2130 | |
| 2131 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2132 { | |
| 2133 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2134 | |
| 2135 if (tap) | |
| 2136 { | |
| 2137 if (specAlias != tap->specAlias) | |
| 2138 goto Lnomatch; | |
| 2139 | |
| 2140 return 1; // match | |
| 2141 } | |
| 2142 | |
| 2143 Lnomatch: | |
| 2144 return 0; | |
| 2145 } | |
| 2146 | |
| 2147 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2148 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2149 Declaration **psparam) | |
| 2150 { | |
| 2151 Dsymbol *sa; | |
| 2152 Object *oarg; | |
| 2153 Expression *ea; | |
| 2154 | |
| 2155 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2156 | |
| 2157 if (i < tiargs->dim) | |
| 2158 oarg = (Object *)tiargs->data[i]; | |
| 2159 else | |
| 2160 { // Get default argument instead | |
| 2161 oarg = defaultArg(sc); | |
| 2162 if (!oarg) | |
| 2163 { assert(i < dedtypes->dim); | |
| 2164 // It might have already been deduced | |
| 2165 oarg = (Object *)dedtypes->data[i]; | |
| 2166 if (!oarg) | |
| 2167 goto Lnomatch; | |
| 2168 } | |
| 2169 } | |
| 2170 | |
| 2171 sa = getDsymbol(oarg); | |
| 2172 if (!sa) | |
| 2173 goto Lnomatch; | |
| 2174 | |
| 2175 if (specAlias) | |
| 2176 { | |
| 2177 if (!sa || sa == sdummy) | |
| 2178 goto Lnomatch; | |
| 2179 if (sa != specAlias) | |
| 2180 goto Lnomatch; | |
| 2181 } | |
| 2182 else if (dedtypes->data[i]) | |
| 2183 { // Must match already deduced symbol | |
| 2184 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2185 | |
| 2186 if (!sa || s != sa) | |
| 2187 goto Lnomatch; | |
| 2188 } | |
| 2189 dedtypes->data[i] = sa; | |
| 2190 | |
| 2191 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2192 return MATCHexact; | |
| 2193 | |
| 2194 Lnomatch: | |
| 2195 *psparam = NULL; | |
| 2196 return MATCHnomatch; | |
| 2197 } | |
| 2198 | |
| 2199 | |
| 2200 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2201 { | |
| 2202 printf(" %s\n", ident->toChars()); | |
| 2203 | |
| 2204 Dsymbol *sa = isDsymbol(oded); | |
| 2205 assert(sa); | |
| 2206 | |
| 2207 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2208 } | |
| 2209 | |
| 2210 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2211 { | |
| 2212 buf->writestring("alias "); | |
| 2213 buf->writestring(ident->toChars()); | |
| 2214 if (specAliasT) | |
| 2215 { | |
| 2216 buf->writestring(" : "); | |
| 2217 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2218 } | |
| 2219 if (defaultAlias) | |
| 2220 { | |
| 2221 buf->writestring(" = "); | |
| 2222 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2223 } | |
| 2224 } | |
| 2225 | |
| 2226 | |
| 2227 void *TemplateAliasParameter::dummyArg() | |
| 2228 { Dsymbol *s; | |
| 2229 | |
| 2230 s = specAlias; | |
| 2231 if (!s) | |
| 2232 { | |
| 2233 if (!sdummy) | |
| 2234 sdummy = new Dsymbol(); | |
| 2235 s = sdummy; | |
| 2236 } | |
| 2237 return (void*)s; | |
| 2238 } | |
| 2239 | |
| 2240 | |
| 2241 Object *TemplateAliasParameter::specialization() | |
| 2242 { | |
| 2243 return specAliasT; | |
| 2244 } | |
| 2245 | |
| 2246 | |
| 2247 Object *TemplateAliasParameter::defaultArg(Scope *sc) | |
| 2248 { | |
| 2249 Dsymbol *s = NULL; | |
| 2250 | |
| 2251 if (defaultAlias) | |
| 2252 { | |
| 2253 s = defaultAlias->toDsymbol(sc); | |
| 2254 if (!s) | |
| 2255 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2256 } | |
| 2257 return s; | |
| 2258 } | |
| 2259 | |
| 2260 /* ======================== TemplateValueParameter ========================== */ | |
| 2261 | |
| 2262 // value-parameter | |
| 2263 | |
| 2264 Expression *TemplateValueParameter::edummy = NULL; | |
| 2265 | |
| 2266 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2267 Expression *specValue, Expression *defaultValue) | |
| 2268 : TemplateParameter(loc, ident) | |
| 2269 { | |
| 2270 this->ident = ident; | |
| 2271 this->valType = valType; | |
| 2272 this->specValue = specValue; | |
| 2273 this->defaultValue = defaultValue; | |
| 2274 } | |
| 2275 | |
| 2276 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2277 { | |
| 2278 return this; | |
| 2279 } | |
| 2280 | |
| 2281 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2282 { | |
| 2283 TemplateValueParameter *tp = | |
| 2284 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2285 tp->valType = valType->syntaxCopy(); | |
| 2286 if (specValue) | |
| 2287 tp->specValue = specValue->syntaxCopy(); | |
| 2288 if (defaultValue) | |
| 2289 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2290 return tp; | |
| 2291 } | |
| 2292 | |
| 2293 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2294 { | |
| 2295 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2296 v->storage_class = STCtemplateparameter; | |
| 2297 if (!sc->insert(v)) | |
| 2298 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2299 sparam = v; | |
| 2300 } | |
| 2301 | |
| 2302 void TemplateValueParameter::semantic(Scope *sc) | |
| 2303 { | |
| 2304 sparam->semantic(sc); | |
| 2305 valType = valType->semantic(loc, sc); | |
| 2306 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2307 valType->ty != Tident) | |
| 2308 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2309 | |
| 2310 if (specValue) | |
| 2311 { Expression *e = specValue; | |
| 2312 | |
| 2313 e = e->semantic(sc); | |
| 2314 e = e->implicitCastTo(sc, valType); | |
| 2315 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2316 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2317 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2318 specValue = e; | |
| 2319 //e->toInteger(); | |
| 2320 } | |
| 2321 | |
| 2322 #if 0 // defer semantic analysis to arg match | |
| 2323 if (defaultValue) | |
| 2324 { Expression *e = defaultValue; | |
| 2325 | |
| 2326 e = e->semantic(sc); | |
| 2327 e = e->implicitCastTo(sc, valType); | |
| 2328 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2329 if (e->op == TOKint64) | |
| 2330 defaultValue = e; | |
| 2331 //e->toInteger(); | |
| 2332 } | |
| 2333 #endif | |
| 2334 } | |
| 2335 | |
| 2336 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2337 { | |
| 2338 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2339 | |
| 2340 if (tvp) | |
| 2341 { | |
| 2342 if (valType != tvp->valType) | |
| 2343 goto Lnomatch; | |
| 2344 | |
| 2345 if (valType && !valType->equals(tvp->valType)) | |
| 2346 goto Lnomatch; | |
| 2347 | |
| 2348 if (specValue != tvp->specValue) | |
| 2349 goto Lnomatch; | |
| 2350 | |
| 2351 return 1; // match | |
| 2352 } | |
| 2353 | |
| 2354 Lnomatch: | |
| 2355 return 0; | |
| 2356 } | |
| 2357 | |
| 2358 | |
| 2359 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2360 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
| 2361 Declaration **psparam) | |
| 2362 { | |
| 2363 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2364 | |
| 2365 Initializer *init; | |
| 2366 Declaration *sparam; | |
| 2367 MATCH m = MATCHexact; | |
| 2368 Expression *ei; | |
| 2369 Object *oarg; | |
| 2370 | |
| 2371 if (i < tiargs->dim) | |
| 2372 oarg = (Object *)tiargs->data[i]; | |
| 2373 else | |
| 2374 { // Get default argument instead | |
| 2375 oarg = defaultArg(sc); | |
| 2376 if (!oarg) | |
| 2377 { assert(i < dedtypes->dim); | |
| 2378 // It might have already been deduced | |
| 2379 oarg = (Object *)dedtypes->data[i]; | |
| 2380 if (!oarg) | |
| 2381 goto Lnomatch; | |
| 2382 } | |
| 2383 } | |
| 2384 | |
| 2385 ei = isExpression(oarg); | |
| 2386 Type *vt; | |
| 2387 | |
| 2388 if (!ei && oarg) | |
| 2389 goto Lnomatch; | |
| 2390 | |
| 2391 if (specValue) | |
| 2392 { | |
| 2393 if (!ei || ei == edummy) | |
| 2394 goto Lnomatch; | |
| 2395 | |
| 2396 Expression *e = specValue; | |
| 2397 | |
| 2398 e = e->semantic(sc); | |
| 2399 e = e->implicitCastTo(sc, valType); | |
| 2400 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2401 | |
| 2402 ei = ei->syntaxCopy(); | |
| 2403 ei = ei->semantic(sc); | |
| 2404 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2405 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2406 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2407 if (!ei->equals(e)) | |
| 2408 goto Lnomatch; | |
| 2409 } | |
| 2410 else if (dedtypes->data[i]) | |
| 2411 { // Must match already deduced value | |
| 2412 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2413 | |
| 2414 if (!ei || !ei->equals(e)) | |
| 2415 goto Lnomatch; | |
| 2416 } | |
| 2417 Lmatch: | |
| 2418 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2419 vt = valType->semantic(0, sc); | |
| 2420 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2421 if (ei->type) | |
| 2422 { | |
| 2423 m = (MATCH)ei->implicitConvTo(vt); | |
| 2424 //printf("m: %d\n", m); | |
| 2425 if (!m) | |
| 2426 goto Lnomatch; | |
| 2427 } | |
| 2428 dedtypes->data[i] = ei; | |
| 2429 | |
| 2430 init = new ExpInitializer(loc, ei); | |
| 2431 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2432 sparam->storage_class = STCconst; | |
| 2433 *psparam = sparam; | |
| 2434 return m; | |
| 2435 | |
| 2436 Lnomatch: | |
| 159 | 2437 //printf("\tno match\n"); |
| 1 | 2438 *psparam = NULL; |
| 2439 return MATCHnomatch; | |
| 2440 } | |
| 2441 | |
| 2442 | |
| 2443 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2444 { | |
| 2445 printf(" %s\n", ident->toChars()); | |
| 2446 | |
| 2447 Expression *ea = isExpression(oded); | |
| 2448 | |
| 2449 if (specValue) | |
| 2450 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2451 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2452 } | |
| 2453 | |
| 2454 | |
| 2455 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2456 { | |
| 2457 valType->toCBuffer(buf, ident, hgs); | |
| 2458 if (specValue) | |
| 2459 { | |
| 2460 buf->writestring(" : "); | |
| 2461 specValue->toCBuffer(buf, hgs); | |
| 2462 } | |
| 2463 if (defaultValue) | |
| 2464 { | |
| 2465 buf->writestring(" = "); | |
| 2466 defaultValue->toCBuffer(buf, hgs); | |
| 2467 } | |
| 2468 } | |
| 2469 | |
| 2470 | |
| 2471 void *TemplateValueParameter::dummyArg() | |
| 2472 { Expression *e; | |
| 2473 | |
| 2474 e = specValue; | |
| 2475 if (!e) | |
| 2476 { | |
| 2477 // Create a dummy value | |
| 2478 if (!edummy) | |
| 2479 edummy = valType->defaultInit(); | |
| 2480 e = edummy; | |
| 2481 } | |
| 2482 return (void *)e; | |
| 2483 } | |
| 2484 | |
| 2485 | |
| 2486 Object *TemplateValueParameter::specialization() | |
| 2487 { | |
| 2488 return specValue; | |
| 2489 } | |
| 2490 | |
| 2491 | |
| 2492 Object *TemplateValueParameter::defaultArg(Scope *sc) | |
| 2493 { | |
| 2494 Expression *e; | |
| 2495 | |
| 2496 e = defaultValue; | |
| 2497 if (e) | |
| 2498 { | |
| 2499 e = e->syntaxCopy(); | |
| 2500 e = e->semantic(sc); | |
| 2501 } | |
| 2502 return e; | |
| 2503 } | |
| 2504 | |
| 2505 /* ======================== TemplateTupleParameter ========================== */ | |
| 2506 | |
| 2507 // variadic-parameter | |
| 2508 | |
| 2509 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2510 : TemplateParameter(loc, ident) | |
| 2511 { | |
| 2512 this->ident = ident; | |
| 2513 } | |
| 2514 | |
| 2515 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2516 { | |
| 2517 return this; | |
| 2518 } | |
| 2519 | |
| 2520 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2521 { | |
| 2522 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2523 return tp; | |
| 2524 } | |
| 2525 | |
| 2526 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2527 { | |
| 2528 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2529 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2530 if (!sc->insert(sparam)) | |
| 2531 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2532 } | |
| 2533 | |
| 2534 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2535 { | |
| 2536 } | |
| 2537 | |
| 2538 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2539 { | |
| 2540 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2541 | |
| 2542 if (tvp) | |
| 2543 { | |
| 2544 return 1; // match | |
| 2545 } | |
| 2546 | |
| 2547 Lnomatch: | |
| 2548 return 0; | |
| 2549 } | |
| 2550 | |
| 2551 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2552 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2553 Objects *dedtypes, | |
| 2554 Declaration **psparam) | |
| 2555 { | |
| 2556 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2557 | |
| 2558 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2559 * for the variadic parameter. | |
| 2560 */ | |
| 2561 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2562 Tuple *ovar; | |
| 2563 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2564 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2565 else | |
| 2566 { | |
| 2567 ovar = new Tuple(); | |
| 2568 //printf("ovar = %p\n", ovar); | |
| 2569 if (i < tiargs->dim) | |
| 2570 { | |
| 2571 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2572 ovar->objects.setDim(tiargs->dim - i); | |
| 2573 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2574 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2575 } | |
| 2576 } | |
| 2577 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2578 dedtypes->data[i] = (void *)ovar; | |
| 2579 return MATCHexact; | |
| 2580 } | |
| 2581 | |
| 2582 | |
| 2583 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2584 { | |
| 2585 printf(" %s... [", ident->toChars()); | |
| 2586 Tuple *v = isTuple(oded); | |
| 2587 assert(v); | |
| 2588 | |
| 2589 //printf("|%d| ", v->objects.dim); | |
| 2590 for (int i = 0; i < v->objects.dim; i++) | |
| 2591 { | |
| 2592 if (i) | |
| 2593 printf(", "); | |
| 2594 | |
| 2595 Object *o = (Object *)v->objects.data[i]; | |
| 2596 | |
| 2597 Dsymbol *sa = isDsymbol(o); | |
| 2598 if (sa) | |
| 2599 printf("alias: %s", sa->toChars()); | |
| 2600 | |
| 2601 Type *ta = isType(o); | |
| 2602 if (ta) | |
| 2603 printf("type: %s", ta->toChars()); | |
| 2604 | |
| 2605 Expression *ea = isExpression(o); | |
| 2606 if (ea) | |
| 2607 printf("exp: %s", ea->toChars()); | |
| 2608 | |
| 2609 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2610 } | |
| 2611 | |
| 2612 printf("]\n"); | |
| 2613 } | |
| 2614 | |
| 2615 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2616 { | |
| 2617 buf->writestring(ident->toChars()); | |
| 2618 buf->writestring("..."); | |
| 2619 } | |
| 2620 | |
| 2621 | |
| 2622 void *TemplateTupleParameter::dummyArg() | |
| 2623 { | |
| 2624 return NULL; | |
| 2625 } | |
| 2626 | |
| 2627 | |
| 2628 Object *TemplateTupleParameter::specialization() | |
| 2629 { | |
| 2630 return NULL; | |
| 2631 } | |
| 2632 | |
| 2633 | |
| 2634 Object *TemplateTupleParameter::defaultArg(Scope *sc) | |
| 2635 { | |
| 2636 return NULL; | |
| 2637 } | |
| 2638 | |
| 2639 /* ======================== TemplateInstance ================================ */ | |
| 2640 | |
| 2641 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2642 : ScopeDsymbol(NULL) | |
| 2643 { | |
| 2644 #if LOG | |
| 2645 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2646 #endif | |
| 2647 this->loc = loc; | |
| 2648 this->name = ident; | |
| 2649 this->tiargs = NULL; | |
| 2650 this->tempdecl = NULL; | |
| 2651 this->inst = NULL; | |
| 2652 this->argsym = NULL; | |
| 2653 this->aliasdecl = NULL; | |
| 2654 this->semanticdone = 0; | |
| 2655 this->withsym = NULL; | |
| 2656 this->nest = 0; | |
| 2657 this->havetempdecl = 0; | |
| 2658 this->isnested = NULL; | |
| 2659 this->errors = 0; | |
| 2660 } | |
| 2661 | |
| 2662 | |
| 2663 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2664 : ScopeDsymbol(NULL) | |
| 2665 { | |
| 2666 #if LOG | |
| 2667 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2668 #endif | |
| 2669 this->loc = loc; | |
| 2670 this->name = td->ident; | |
| 2671 this->tiargs = tiargs; | |
| 2672 this->tempdecl = td; | |
| 2673 this->inst = NULL; | |
| 2674 this->argsym = NULL; | |
| 2675 this->aliasdecl = NULL; | |
| 2676 this->semanticdone = 0; | |
| 2677 this->withsym = NULL; | |
| 2678 this->nest = 0; | |
| 2679 this->havetempdecl = 1; | |
| 2680 this->isnested = NULL; | |
| 2681 this->errors = 0; | |
| 2682 | |
| 2683 assert((size_t)tempdecl->scope > 0x10000); | |
| 2684 } | |
| 2685 | |
| 2686 | |
| 2687 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 2688 { | |
| 2689 Objects *a = NULL; | |
| 2690 if (objs) | |
| 2691 { a = new Objects(); | |
| 2692 a->setDim(objs->dim); | |
| 2693 for (size_t i = 0; i < objs->dim; i++) | |
| 2694 { | |
| 2695 Type *ta = isType((Object *)objs->data[i]); | |
| 2696 if (ta) | |
| 2697 a->data[i] = ta->syntaxCopy(); | |
| 2698 else | |
| 2699 { | |
| 2700 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 2701 assert(ea); | |
| 2702 a->data[i] = ea->syntaxCopy(); | |
| 2703 } | |
| 2704 } | |
| 2705 } | |
| 2706 return a; | |
| 2707 } | |
| 2708 | |
| 2709 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 2710 { | |
| 2711 TemplateInstance *ti; | |
| 2712 int i; | |
| 2713 | |
| 2714 if (s) | |
| 2715 ti = (TemplateInstance *)s; | |
| 2716 else | |
| 2717 ti = new TemplateInstance(loc, name); | |
| 2718 | |
| 2719 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 2720 | |
| 2721 ScopeDsymbol::syntaxCopy(ti); | |
| 2722 return ti; | |
| 2723 } | |
| 2724 | |
| 2725 | |
| 2726 void TemplateInstance::semantic(Scope *sc) | |
| 2727 { | |
| 2728 if (global.errors) | |
| 2729 { | |
| 2730 if (!global.gag) | |
| 2731 { | |
| 2732 /* Trying to soldier on rarely generates useful messages | |
| 2733 * at this point. | |
| 2734 */ | |
| 2735 fatal(); | |
| 2736 } | |
| 2737 return; | |
| 2738 } | |
| 2739 #if LOG | |
| 2740 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 2741 #endif | |
| 2742 if (inst) // if semantic() was already run | |
| 2743 { | |
| 2744 #if LOG | |
| 2745 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 2746 #endif | |
| 2747 return; | |
| 2748 } | |
| 2749 | |
| 2750 if (semanticdone != 0) | |
| 2751 { | |
| 2752 error(loc, "recursive template expansion"); | |
| 2753 // inst = this; | |
| 2754 return; | |
| 2755 } | |
| 2756 semanticdone = 1; | |
| 2757 | |
| 2758 #if LOG | |
| 2759 printf("\tdo semantic\n"); | |
| 2760 #endif | |
| 2761 if (havetempdecl) | |
| 2762 { | |
| 2763 assert((size_t)tempdecl->scope > 0x10000); | |
| 2764 // Deduce tdtypes | |
| 2765 tdtypes.setDim(tempdecl->parameters->dim); | |
| 2766 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 2767 { | |
| 2768 error("incompatible arguments for template instantiation"); | |
| 2769 inst = this; | |
| 2770 return; | |
| 2771 } | |
| 2772 } | |
| 2773 else | |
| 2774 { | |
| 2775 // Run semantic on each argument, place results in tiargs[] | |
| 2776 semanticTiargs(sc); | |
| 2777 | |
| 2778 tempdecl = findTemplateDeclaration(sc); | |
| 2779 if (tempdecl) | |
| 2780 tempdecl = findBestMatch(sc); | |
| 2781 if (!tempdecl || global.errors) | |
| 2782 { inst = this; | |
| 2783 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 2784 return; // error recovery | |
| 2785 } | |
| 2786 } | |
| 2787 | |
| 2788 isNested(tiargs); | |
| 2789 | |
| 2790 /* See if there is an existing TemplateInstantiation that already | |
| 2791 * implements the typeargs. If so, just refer to that one instead. | |
| 2792 */ | |
| 2793 | |
| 2794 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 2795 { | |
| 2796 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 2797 #if LOG | |
| 2798 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 2799 #endif | |
| 2800 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 2801 | |
| 2802 // Nesting must match | |
| 2803 if (isnested != ti->isnested) | |
| 2804 continue; | |
| 2805 #if 0 | |
| 2806 if (isnested && sc->parent != ti->parent) | |
| 2807 continue; | |
| 2808 #endif | |
| 2809 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 2810 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 2811 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 2812 if (!match(o1, o2, tempdecl, sc)) | |
| 2813 goto L1; | |
| 2814 } | |
| 2815 | |
| 2816 // It's a match | |
| 2817 inst = ti; | |
| 2818 parent = ti->parent; | |
| 2819 #if LOG | |
| 2820 printf("\tit's a match with instance %p\n", inst); | |
| 2821 #endif | |
| 2822 return; | |
| 2823 | |
| 2824 L1: | |
| 2825 ; | |
| 2826 } | |
| 2827 | |
| 2828 /* So, we need to implement 'this' instance. | |
| 2829 */ | |
| 2830 #if LOG | |
| 2831 printf("\timplement template instance '%s'\n", toChars()); | |
| 2832 #endif | |
| 2833 unsigned errorsave = global.errors; | |
| 2834 inst = this; | |
| 2835 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 2836 tempdecl->instances.push(this); | |
| 2837 parent = tempdecl->parent; | |
| 2838 //printf("parent = '%s'\n", parent->kind()); | |
| 2839 | |
| 2840 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 2841 | |
| 2842 #if 1 | |
| 2843 if (isnested) | |
| 2844 parent = isnested; | |
| 2845 #endif | |
| 2846 //printf("parent = '%s'\n", parent->kind()); | |
| 2847 | |
| 2848 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 2849 // will get called on the instance members | |
| 2850 #if 1 | |
| 2851 int dosemantic3 = 0; | |
| 2852 { Array *a; | |
| 2853 int i; | |
| 2854 | |
| 2855 if (sc->scopesym && sc->scopesym->members && !sc->scopesym->isTemplateMixin()) | |
| 2856 { | |
| 2857 //printf("\t1: adding to %s %s\n", sc->scopesym->kind(), sc->scopesym->toChars()); | |
| 2858 a = sc->scopesym->members; | |
| 2859 } | |
| 2860 else | |
| 2861 { Module *m = sc->module->importedFrom; | |
| 2862 //printf("\t2: adding to module %s\n", m->toChars()); | |
| 2863 a = m->members; | |
| 2864 if (m->semanticdone >= 3) | |
| 2865 dosemantic3 = 1; | |
| 2866 } | |
| 159 | 2867 for (int i = 0; 1; i++) |
| 1 | 2868 { |
| 2869 if (i == a->dim) | |
| 2870 { | |
| 2871 a->push(this); | |
| 2872 break; | |
| 2873 } | |
| 2874 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 2875 break; | |
| 2876 } | |
| 2877 } | |
| 2878 #endif | |
| 2879 | |
| 2880 // Copy the syntax trees from the TemplateDeclaration | |
| 2881 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 2882 | |
| 2883 // Create our own scope for the template parameters | |
| 2884 Scope *scope = tempdecl->scope; | |
| 2885 if (!scope) | |
| 2886 { | |
| 2887 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 2888 return; | |
| 2889 } | |
| 2890 | |
| 2891 #if LOG | |
| 2892 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 2893 #endif | |
| 2894 argsym = new ScopeDsymbol(); | |
| 2895 argsym->parent = scope->parent; | |
| 2896 scope = scope->push(argsym); | |
| 2897 | |
| 2898 // Declare each template parameter as an alias for the argument type | |
| 2899 declareParameters(scope); | |
| 2900 | |
| 2901 // Add members of template instance to template instance symbol table | |
| 2902 // parent = scope->scopesym; | |
| 2903 symtab = new DsymbolTable(); | |
| 2904 int memnum = 0; | |
| 2905 for (int i = 0; i < members->dim; i++) | |
| 2906 { | |
| 2907 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 2908 #if LOG | |
| 2909 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 2910 #endif | |
| 2911 memnum |= s->addMember(scope, this, memnum); | |
| 2912 } | |
| 2913 #if LOG | |
| 2914 printf("adding members done\n"); | |
| 2915 #endif | |
| 2916 | |
| 2917 /* See if there is only one member of template instance, and that | |
| 2918 * member has the same name as the template instance. | |
| 2919 * If so, this template instance becomes an alias for that member. | |
| 2920 */ | |
| 2921 //printf("members->dim = %d\n", members->dim); | |
| 2922 if (members->dim) | |
| 2923 { | |
| 2924 Dsymbol *s; | |
| 2925 if (Dsymbol::oneMembers(members, &s) && s) | |
| 2926 { | |
| 2927 //printf("s->kind = '%s'\n", s->kind()); | |
| 2928 //s->print(); | |
| 2929 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 2930 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 2931 { | |
| 2932 //printf("setting aliasdecl\n"); | |
| 2933 aliasdecl = new AliasDeclaration(loc, s->ident, s); | |
| 2934 } | |
| 2935 } | |
| 2936 } | |
| 2937 | |
| 2938 // Do semantic() analysis on template instance members | |
| 2939 #if LOG | |
| 2940 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 2941 #endif | |
| 2942 Scope *sc2; | |
| 2943 sc2 = scope->push(this); | |
| 2944 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 2945 sc2->parent = /*isnested ? sc->parent :*/ this; | |
| 2946 | |
| 2947 #if _WIN32 | |
| 2948 __try | |
| 2949 { | |
| 2950 #endif | |
| 2951 for (int i = 0; i < members->dim; i++) | |
| 2952 { | |
| 2953 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 2954 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 2955 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 2956 // if (isnested) | |
| 2957 // s->parent = sc->parent; | |
| 2958 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 2959 s->semantic(sc2); | |
| 2960 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 2961 sc2->module->runDeferredSemantic(); | |
| 2962 } | |
| 2963 #if _WIN32 | |
| 2964 } | |
| 2965 __except (__ehfilter(GetExceptionInformation())) | |
| 2966 { | |
| 2967 global.gag = 0; // ensure error message gets printed | |
| 2968 error("recursive expansion"); | |
| 2969 fatal(); | |
| 2970 } | |
| 2971 #endif | |
| 2972 | |
| 2973 /* If any of the instantiation members didn't get semantic() run | |
| 2974 * on them due to forward references, we cannot run semantic2() | |
| 2975 * or semantic3() yet. | |
| 2976 */ | |
| 2977 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 2978 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 2979 | |
| 2980 if (sd->parent == this) | |
| 2981 goto Laftersemantic; | |
| 2982 } | |
| 2983 | |
| 2984 /* The problem is when to parse the initializer for a variable. | |
| 2985 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 2986 * for initializers inside a function. | |
| 2987 */ | |
| 2988 // if (sc->parent->isFuncDeclaration()) | |
| 2989 | |
| 2990 /* BUG 782: this has problems if the classes this depends on | |
| 2991 * are forward referenced. Find a way to defer semantic() | |
| 2992 * on this template. | |
| 2993 */ | |
| 2994 semantic2(sc2); | |
| 2995 | |
| 2996 if (sc->func || dosemantic3) | |
| 2997 { | |
| 2998 semantic3(sc2); | |
| 2999 } | |
| 3000 | |
| 3001 Laftersemantic: | |
| 3002 sc2->pop(); | |
| 3003 | |
| 3004 scope->pop(); | |
| 3005 | |
| 3006 // Give additional context info if error occurred during instantiation | |
| 3007 if (global.errors != errorsave) | |
| 3008 { | |
| 3009 error("error instantiating"); | |
| 3010 errors = 1; | |
| 3011 if (global.gag) | |
| 3012 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 3013 } | |
| 3014 | |
| 3015 #if LOG | |
| 3016 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3017 #endif | |
| 3018 } | |
| 3019 | |
| 3020 | |
| 3021 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 3022 { | |
| 3023 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3024 semanticTiargs(loc, sc, tiargs); | |
| 3025 } | |
| 3026 | |
| 3027 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 3028 { | |
| 3029 // Run semantic on each argument, place results in tiargs[] | |
| 3030 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3031 if (!tiargs) | |
| 3032 return; | |
| 3033 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3034 { | |
| 3035 Object *o = (Object *)tiargs->data[j]; | |
| 3036 Type *ta = isType(o); | |
| 3037 Expression *ea = isExpression(o); | |
| 3038 Dsymbol *sa = isDsymbol(o); | |
| 3039 | |
| 159 | 3040 //printf("1: tiargs->data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); |
| 1 | 3041 if (ta) |
| 3042 { | |
| 3043 //printf("type %s\n", ta->toChars()); | |
| 3044 // It might really be an Expression or an Alias | |
| 3045 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 3046 if (ea) | |
| 3047 { | |
| 3048 ea = ea->semantic(sc); | |
| 3049 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3050 tiargs->data[j] = ea; | |
| 3051 } | |
| 3052 else if (sa) | |
| 3053 { tiargs->data[j] = sa; | |
| 3054 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 3055 if (d) | |
| 3056 { | |
| 3057 size_t dim = d->objects->dim; | |
| 3058 tiargs->remove(j); | |
| 3059 tiargs->insert(j, d->objects); | |
| 3060 j--; | |
| 3061 } | |
| 3062 } | |
| 3063 else if (ta) | |
| 3064 { | |
| 3065 if (ta->ty == Ttuple) | |
| 3066 { // Expand tuple | |
| 3067 TypeTuple *tt = (TypeTuple *)ta; | |
| 3068 size_t dim = tt->arguments->dim; | |
| 3069 tiargs->remove(j); | |
| 3070 if (dim) | |
| 3071 { tiargs->reserve(dim); | |
| 3072 for (size_t i = 0; i < dim; i++) | |
| 3073 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 3074 tiargs->insert(j + i, arg->type); | |
| 3075 } | |
| 3076 } | |
| 3077 j--; | |
| 3078 } | |
| 3079 else | |
| 3080 tiargs->data[j] = ta; | |
| 3081 } | |
| 3082 else | |
| 3083 { | |
| 3084 assert(global.errors); | |
| 3085 tiargs->data[j] = Type::terror; | |
| 3086 } | |
| 3087 } | |
| 3088 else if (ea) | |
| 3089 { | |
| 3090 if (!ea) | |
| 3091 { assert(global.errors); | |
| 3092 ea = new IntegerExp(0); | |
| 3093 } | |
| 3094 assert(ea); | |
| 3095 ea = ea->semantic(sc); | |
| 3096 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3097 tiargs->data[j] = ea; | |
|
139
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diff
changeset
|
3098 if (ea->op == TOKtype) |
|
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
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parents:
130
diff
changeset
|
3099 tiargs->data[j] = ea->type; |
| 1 | 3100 } |
| 3101 else if (sa) | |
| 3102 { | |
| 3103 } | |
| 3104 else | |
| 3105 { | |
| 3106 assert(0); | |
| 3107 } | |
| 3108 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3109 } | |
| 3110 #if 0 | |
| 3111 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3112 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3113 { | |
| 3114 Object *o = (Object *)tiargs->data[j]; | |
| 3115 Type *ta = isType(o); | |
| 3116 Expression *ea = isExpression(o); | |
| 3117 Dsymbol *sa = isDsymbol(o); | |
| 3118 Tuple *va = isTuple(o); | |
| 3119 | |
| 3120 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3121 } | |
| 3122 #endif | |
| 3123 } | |
| 3124 | |
| 3125 /********************************************** | |
| 3126 * Find template declaration corresponding to template instance. | |
| 3127 */ | |
| 3128 | |
| 3129 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3130 { | |
| 3131 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3132 if (!tempdecl) | |
| 3133 { | |
| 3134 /* Given: | |
| 3135 * foo!( ... ) | |
| 3136 * figure out which TemplateDeclaration foo refers to. | |
| 3137 */ | |
| 3138 Dsymbol *s; | |
| 3139 Dsymbol *scopesym; | |
| 3140 Identifier *id; | |
| 3141 int i; | |
| 3142 | |
| 3143 id = name; | |
| 3144 s = sc->search(loc, id, &scopesym); | |
| 3145 if (!s) | |
| 3146 { error("identifier '%s' is not defined", id->toChars()); | |
| 3147 return NULL; | |
| 3148 } | |
| 3149 #if LOG | |
| 3150 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 92 | 3151 if (s->parent) |
| 3152 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 1 | 3153 #endif |
| 3154 withsym = scopesym->isWithScopeSymbol(); | |
| 3155 | |
| 3156 /* We might have found an alias within a template when | |
| 3157 * we really want the template. | |
| 3158 */ | |
| 3159 TemplateInstance *ti; | |
| 3160 if (s->parent && | |
| 3161 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3162 { | |
| 3163 if ( | |
| 3164 (ti->name == id || | |
| 3165 ti->toAlias()->ident == id) | |
| 3166 && | |
| 3167 ti->tempdecl) | |
| 3168 { | |
| 3169 /* This is so that one can refer to the enclosing | |
| 3170 * template, even if it has the same name as a member | |
| 3171 * of the template, if it has a !(arguments) | |
| 3172 */ | |
| 3173 tempdecl = ti->tempdecl; | |
| 3174 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3175 tempdecl = tempdecl->overroot; // then get the start | |
| 3176 s = tempdecl; | |
| 3177 } | |
| 3178 } | |
| 3179 | |
| 3180 s = s->toAlias(); | |
| 3181 | |
| 3182 /* It should be a TemplateDeclaration, not some other symbol | |
| 3183 */ | |
| 3184 tempdecl = s->isTemplateDeclaration(); | |
| 3185 if (!tempdecl) | |
| 3186 { | |
| 3187 if (!s->parent && global.errors) | |
| 3188 return NULL; | |
| 3189 if (!s->parent && s->getType()) | |
| 3190 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3191 if (!s2) | |
| 3192 { | |
| 3193 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3194 return NULL; | |
| 3195 } | |
| 3196 s = s2; | |
| 3197 } | |
| 3198 #ifdef DEBUG | |
| 3199 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3200 #endif | |
| 3201 //assert(s->parent); | |
| 3202 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3203 if (ti && | |
| 3204 (ti->name == id || | |
| 3205 ti->toAlias()->ident == id) | |
| 3206 && | |
| 3207 ti->tempdecl) | |
| 3208 { | |
| 3209 /* This is so that one can refer to the enclosing | |
| 3210 * template, even if it has the same name as a member | |
| 3211 * of the template, if it has a !(arguments) | |
| 3212 */ | |
| 3213 tempdecl = ti->tempdecl; | |
| 3214 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3215 tempdecl = tempdecl->overroot; // then get the start | |
| 3216 } | |
| 3217 else | |
| 3218 { | |
| 3219 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3220 return NULL; | |
| 3221 } | |
| 3222 } | |
| 3223 } | |
| 3224 else | |
| 3225 assert(tempdecl->isTemplateDeclaration()); | |
| 3226 return tempdecl; | |
| 3227 } | |
| 3228 | |
| 3229 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3230 { | |
| 3231 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3232 * name, look for the best match. | |
| 3233 */ | |
| 3234 TemplateDeclaration *td_ambig = NULL; | |
| 3235 TemplateDeclaration *td_best = NULL; | |
| 3236 MATCH m_best = MATCHnomatch; | |
| 3237 Objects dedtypes; | |
| 3238 | |
| 3239 #if LOG | |
| 3240 printf("TemplateInstance::findBestMatch()\n"); | |
| 3241 #endif | |
| 3242 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3243 { | |
| 3244 MATCH m; | |
| 3245 | |
| 3246 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3247 | |
| 3248 // If more arguments than parameters, | |
| 3249 // then this is no match. | |
| 3250 if (td->parameters->dim < tiargs->dim) | |
| 3251 { | |
| 3252 if (!td->isVariadic()) | |
| 3253 continue; | |
| 3254 } | |
| 3255 | |
| 3256 dedtypes.setDim(td->parameters->dim); | |
| 92 | 3257 dedtypes.zero(); |
| 1 | 3258 if (!td->scope) |
| 3259 { | |
| 3260 error("forward reference to template declaration %s", td->toChars()); | |
| 3261 return NULL; | |
| 3262 } | |
| 3263 m = td->matchWithInstance(this, &dedtypes, 0); | |
| 92 | 3264 //printf("m = %d\n", m); |
| 1 | 3265 if (!m) // no match at all |
| 3266 continue; | |
| 3267 | |
| 3268 #if 1 | |
| 3269 if (m < m_best) | |
| 3270 goto Ltd_best; | |
| 3271 if (m > m_best) | |
| 3272 goto Ltd; | |
| 3273 #else | |
| 3274 if (!m_best) | |
| 3275 goto Ltd; | |
| 3276 #endif | |
| 3277 { | |
| 3278 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3279 int c1 = td->leastAsSpecialized(td_best); | |
| 3280 int c2 = td_best->leastAsSpecialized(td); | |
| 3281 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3282 | |
| 159 | 3283 if (c1 > c2) |
| 1 | 3284 goto Ltd; |
| 159 | 3285 else if (c1 < c2) |
| 1 | 3286 goto Ltd_best; |
| 3287 else | |
| 3288 goto Lambig; | |
| 3289 } | |
| 3290 | |
| 3291 Lambig: // td_best and td are ambiguous | |
| 3292 td_ambig = td; | |
| 3293 continue; | |
| 3294 | |
| 3295 Ltd_best: // td_best is the best match so far | |
| 3296 td_ambig = NULL; | |
| 3297 continue; | |
| 3298 | |
| 3299 Ltd: // td is the new best match | |
| 3300 td_ambig = NULL; | |
| 3301 td_best = td; | |
| 3302 m_best = m; | |
| 3303 tdtypes.setDim(dedtypes.dim); | |
| 3304 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3305 continue; | |
| 3306 } | |
| 3307 | |
| 3308 if (!td_best) | |
| 3309 { | |
| 3310 error("%s does not match any template declaration", toChars()); | |
| 3311 return NULL; | |
| 3312 } | |
| 3313 if (td_ambig) | |
| 3314 { | |
| 3315 error("%s matches more than one template declaration, %s and %s", | |
| 3316 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3317 } | |
| 3318 | |
| 3319 /* The best match is td_best | |
| 3320 */ | |
| 3321 tempdecl = td_best; | |
| 3322 | |
| 3323 #if 0 | |
| 3324 /* Cast any value arguments to be same type as value parameter | |
| 3325 */ | |
| 3326 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3327 { Object *o = (Object *)tiargs->data[i]; | |
| 3328 Expression *ea = isExpression(o); // value argument | |
| 3329 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3330 assert(tp); | |
| 3331 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3332 if (tvp) | |
| 3333 { | |
| 3334 assert(ea); | |
| 3335 ea = ea->castTo(tvp->valType); | |
| 3336 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3337 tiargs->data[i] = (Object *)ea; | |
| 3338 } | |
| 3339 } | |
| 3340 #endif | |
| 3341 | |
| 3342 #if LOG | |
| 3343 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3344 #endif | |
| 3345 return tempdecl; | |
| 3346 } | |
| 3347 | |
| 3348 | |
| 3349 /***************************************** | |
| 3350 * Determines if a TemplateInstance will need a nested | |
| 3351 * generation of the TemplateDeclaration. | |
| 3352 */ | |
| 3353 | |
| 3354 int TemplateInstance::isNested(Objects *args) | |
| 3355 { int nested = 0; | |
| 3356 //printf("TemplateInstance::isNested('%s')\n", tempdecl->ident->toChars()); | |
| 3357 | |
| 3358 /* A nested instance happens when an argument references a local | |
| 3359 * symbol that is on the stack. | |
| 3360 */ | |
| 3361 for (size_t i = 0; i < args->dim; i++) | |
| 3362 { Object *o = (Object *)args->data[i]; | |
| 3363 Expression *ea = isExpression(o); | |
| 3364 Dsymbol *sa = isDsymbol(o); | |
| 3365 Tuple *va = isTuple(o); | |
| 3366 if (ea) | |
| 3367 { | |
| 3368 if (ea->op == TOKvar) | |
| 3369 { | |
| 3370 sa = ((VarExp *)ea)->var; | |
| 3371 goto Lsa; | |
| 3372 } | |
| 3373 if (ea->op == TOKfunction) | |
| 3374 { | |
| 3375 sa = ((FuncExp *)ea)->fd; | |
| 3376 goto Lsa; | |
| 3377 } | |
| 3378 } | |
| 3379 else if (sa) | |
| 3380 { | |
| 3381 Lsa: | |
| 3382 Declaration *d = sa->isDeclaration(); | |
| 3383 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
|
3384 #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
|
3385 !(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
|
3386 #endif |
| 1 | 3387 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && |
| 3388 !isTemplateMixin()) | |
| 3389 { | |
| 3390 // if module level template | |
| 3391 if (tempdecl->toParent()->isModule()) | |
| 159 | 3392 { Dsymbol *dparent = d->toParent(); |
| 3393 if (!isnested) | |
| 3394 isnested = dparent; | |
| 3395 else if (isnested != dparent) | |
| 3396 { | |
| 3397 /* Select the more deeply nested of the two. | |
| 3398 * Error if one is not nested inside the other. | |
| 3399 */ | |
| 3400 for (Dsymbol *p = isnested; p; p = p->parent) | |
| 3401 { | |
| 3402 if (p == dparent) | |
| 3403 goto L1; // isnested is most nested | |
| 3404 } | |
| 3405 for (Dsymbol *p = dparent; 1; p = p->parent) | |
| 3406 { | |
| 3407 if (p == isnested) | |
| 3408 { isnested = dparent; | |
| 3409 goto L1; // dparent is most nested | |
| 3410 } | |
| 3411 } | |
| 3412 error("is nested in both %s and %s", isnested->toChars(), dparent->toChars()); | |
| 3413 } | |
| 3414 L1: | |
| 3415 //printf("\tnested inside %s\n", isnested->toChars()); | |
| 1 | 3416 nested |= 1; |
| 3417 } | |
| 3418 else | |
| 3419 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3420 } | |
| 3421 } | |
| 3422 else if (va) | |
| 3423 { | |
| 3424 nested |= isNested(&va->objects); | |
| 3425 } | |
| 3426 } | |
| 3427 return nested; | |
| 3428 } | |
| 3429 | |
| 3430 /**************************************** | |
| 3431 * This instance needs an identifier for name mangling purposes. | |
| 3432 * Create one by taking the template declaration name and adding | |
| 3433 * the type signature for it. | |
| 3434 */ | |
| 3435 | |
| 3436 Identifier *TemplateInstance::genIdent() | |
| 3437 { OutBuffer buf; | |
| 3438 char *id; | |
| 3439 Objects *args; | |
| 3440 | |
| 3441 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3442 id = tempdecl->ident->toChars(); | |
| 3443 buf.printf("__T%zu%s", strlen(id), id); | |
| 3444 args = tiargs; | |
| 3445 for (int i = 0; i < args->dim; i++) | |
| 3446 { Object *o = (Object *)args->data[i]; | |
| 3447 Type *ta = isType(o); | |
| 3448 Expression *ea = isExpression(o); | |
| 3449 Dsymbol *sa = isDsymbol(o); | |
| 3450 Tuple *va = isTuple(o); | |
| 3451 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3452 if (ta) | |
| 3453 { | |
| 3454 buf.writeByte('T'); | |
| 3455 if (ta->deco) | |
| 3456 buf.writestring(ta->deco); | |
| 3457 else | |
| 3458 { | |
| 3459 #ifdef DEBUG | |
| 3460 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3461 #endif | |
| 3462 assert(global.errors); | |
| 3463 } | |
| 3464 } | |
| 3465 else if (ea) | |
| 3466 { sinteger_t v; | |
| 3467 real_t r; | |
| 3468 | |
| 3469 if (ea->op == TOKvar) | |
| 3470 { | |
| 3471 sa = ((VarExp *)ea)->var; | |
| 3472 ea = NULL; | |
| 3473 goto Lsa; | |
| 3474 } | |
| 3475 if (ea->op == TOKfunction) | |
| 3476 { | |
| 3477 sa = ((FuncExp *)ea)->fd; | |
| 3478 ea = NULL; | |
| 3479 goto Lsa; | |
| 3480 } | |
| 3481 buf.writeByte('V'); | |
| 3482 if (ea->op == TOKtuple) | |
| 3483 { ea->error("tuple is not a valid template value argument"); | |
| 3484 continue; | |
| 3485 } | |
| 3486 #if 1 | |
| 19 | 3487 /* Use deco that matches what it would be for a function parameter |
| 3488 */ | |
| 1 | 3489 buf.writestring(ea->type->deco); |
| 3490 #else | |
| 3491 // Use type of parameter, not type of argument | |
| 3492 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3493 assert(tp); | |
| 3494 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3495 assert(tvp); | |
| 3496 buf.writestring(tvp->valType->deco); | |
| 3497 #endif | |
| 3498 ea->toMangleBuffer(&buf); | |
| 3499 } | |
| 3500 else if (sa) | |
| 3501 { | |
| 3502 Lsa: | |
| 3503 buf.writeByte('S'); | |
| 3504 Declaration *d = sa->isDeclaration(); | |
| 3505 if (d && !d->type->deco) | |
| 3506 error("forward reference of %s", d->toChars()); | |
| 3507 else | |
| 3508 { | |
| 3509 char *p = sa->mangle(); | |
| 3510 buf.printf("%zu%s", strlen(p), p); | |
| 3511 } | |
| 3512 } | |
| 3513 else if (va) | |
| 3514 { | |
| 3515 assert(i + 1 == args->dim); // must be last one | |
| 3516 args = &va->objects; | |
| 3517 i = -1; | |
| 3518 } | |
| 3519 else | |
| 3520 assert(0); | |
| 3521 } | |
| 3522 buf.writeByte('Z'); | |
| 3523 id = buf.toChars(); | |
| 3524 buf.data = NULL; | |
| 3525 return new Identifier(id, TOKidentifier); | |
| 3526 } | |
| 3527 | |
| 3528 | |
| 3529 /**************************************************** | |
| 3530 * Declare parameters of template instance, initialize them with the | |
| 3531 * template instance arguments. | |
| 3532 */ | |
| 3533 | |
| 3534 void TemplateInstance::declareParameters(Scope *scope) | |
| 3535 { | |
| 3536 //printf("TemplateInstance::declareParameters()\n"); | |
| 3537 for (int i = 0; i < tdtypes.dim; i++) | |
| 3538 { | |
| 3539 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3540 //Object *o = (Object *)tiargs->data[i]; | |
| 3541 Object *o = (Object *)tdtypes.data[i]; | |
| 3542 | |
| 3543 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3544 tempdecl->declareParameter(scope, tp, o); | |
| 3545 } | |
| 3546 } | |
| 3547 | |
| 3548 | |
| 3549 void TemplateInstance::semantic2(Scope *sc) | |
| 3550 { int i; | |
| 3551 | |
| 3552 if (semanticdone >= 2) | |
| 3553 return; | |
| 3554 semanticdone = 2; | |
| 3555 #if LOG | |
| 3556 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3557 #endif | |
| 3558 if (!errors && members) | |
| 3559 { | |
| 3560 sc = tempdecl->scope; | |
| 3561 assert(sc); | |
| 3562 sc = sc->push(argsym); | |
| 3563 sc = sc->push(this); | |
| 3564 for (i = 0; i < members->dim; i++) | |
| 3565 { | |
| 3566 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3567 #if LOG | |
| 3568 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3569 #endif | |
| 3570 s->semantic2(sc); | |
| 3571 } | |
| 3572 sc = sc->pop(); | |
| 3573 sc->pop(); | |
| 3574 } | |
| 3575 #if LOG | |
| 3576 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3577 #endif | |
| 3578 } | |
| 3579 | |
| 3580 void TemplateInstance::semantic3(Scope *sc) | |
| 3581 { int i; | |
| 3582 | |
| 3583 #if LOG | |
| 3584 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3585 #endif | |
| 3586 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3587 if (semanticdone >= 3) | |
| 3588 return; | |
| 3589 semanticdone = 3; | |
| 3590 if (!errors && members) | |
| 3591 { | |
| 3592 sc = tempdecl->scope; | |
| 3593 sc = sc->push(argsym); | |
| 3594 sc = sc->push(this); | |
| 3595 for (i = 0; i < members->dim; i++) | |
| 3596 { | |
| 3597 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3598 s->semantic3(sc); | |
| 3599 } | |
| 3600 sc = sc->pop(); | |
| 3601 sc->pop(); | |
| 3602 } | |
| 3603 } | |
| 3604 | |
| 3605 void TemplateInstance::toObjFile() | |
| 3606 { int i; | |
| 3607 | |
| 3608 #if LOG | |
| 3609 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3610 #endif | |
| 3611 if (!errors && members) | |
| 3612 { | |
| 3613 for (i = 0; i < members->dim; i++) | |
| 3614 { | |
| 3615 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3616 s->toObjFile(); | |
| 3617 } | |
| 3618 } | |
| 3619 } | |
| 3620 | |
| 3621 void TemplateInstance::inlineScan() | |
| 3622 { int i; | |
| 3623 | |
| 3624 #if LOG | |
| 3625 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3626 #endif | |
| 3627 if (!errors && members) | |
| 3628 { | |
| 3629 for (i = 0; i < members->dim; i++) | |
| 3630 { | |
| 3631 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3632 s->inlineScan(); | |
| 3633 } | |
| 3634 } | |
| 3635 } | |
| 3636 | |
| 3637 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3638 { | |
| 3639 int i; | |
| 3640 | |
| 3641 Identifier *id = name; | |
| 3642 buf->writestring(id->toChars()); | |
| 3643 buf->writestring("!("); | |
| 3644 if (nest) | |
| 3645 buf->writestring("..."); | |
| 3646 else | |
| 3647 { | |
| 3648 nest++; | |
| 3649 Objects *args = tiargs; | |
| 3650 for (i = 0; i < args->dim; i++) | |
| 3651 { | |
| 3652 if (i) | |
| 3653 buf->writeByte(','); | |
| 3654 Object *oarg = (Object *)args->data[i]; | |
| 3655 ObjectToCBuffer(buf, hgs, oarg); | |
| 3656 } | |
| 3657 nest--; | |
| 3658 } | |
| 3659 buf->writeByte(')'); | |
| 3660 } | |
| 3661 | |
| 3662 | |
| 3663 Dsymbol *TemplateInstance::toAlias() | |
| 3664 { | |
| 3665 #if LOG | |
| 3666 printf("TemplateInstance::toAlias()\n"); | |
| 3667 #endif | |
| 3668 if (!inst) | |
| 3669 { error("cannot resolve forward reference"); | |
| 3670 return this; | |
| 3671 } | |
| 3672 | |
| 3673 if (inst != this) | |
| 3674 return inst->toAlias(); | |
| 3675 | |
| 3676 if (aliasdecl) | |
| 3677 return aliasdecl->toAlias(); | |
| 3678 | |
| 3679 return inst; | |
| 3680 } | |
| 3681 | |
| 3682 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 3683 { | |
| 3684 return aliasdecl; | |
| 3685 } | |
| 3686 | |
| 3687 char *TemplateInstance::kind() | |
| 3688 { | |
| 3689 return "template instance"; | |
| 3690 } | |
| 3691 | |
| 3692 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 3693 { | |
| 3694 *ps = NULL; | |
| 3695 return TRUE; | |
| 3696 } | |
| 3697 | |
| 3698 char *TemplateInstance::toChars() | |
| 3699 { | |
| 3700 OutBuffer buf; | |
| 3701 HdrGenState hgs; | |
| 3702 char *s; | |
| 3703 | |
| 3704 toCBuffer(&buf, &hgs); | |
| 3705 s = buf.toChars(); | |
| 3706 buf.data = NULL; | |
| 3707 return s; | |
| 3708 } | |
| 3709 | |
| 3710 /* ======================== TemplateMixin ================================ */ | |
| 3711 | |
| 3712 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 3713 Array *idents, Objects *tiargs) | |
| 3714 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 3715 { | |
| 3716 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 3717 this->ident = ident; | |
| 3718 this->tqual = tqual; | |
| 3719 this->idents = idents; | |
| 3720 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 3721 this->scope = NULL; | |
| 3722 } | |
| 3723 | |
| 3724 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 3725 { TemplateMixin *tm; | |
| 3726 | |
| 3727 Array *ids = new Array(); | |
| 3728 ids->setDim(idents->dim); | |
| 3729 for (int i = 0; i < idents->dim; i++) | |
| 3730 { // Matches TypeQualified::syntaxCopyHelper() | |
| 3731 Identifier *id = (Identifier *)idents->data[i]; | |
| 3732 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 3733 { | |
| 3734 TemplateInstance *ti = (TemplateInstance *)id; | |
| 3735 | |
| 3736 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 3737 id = (Identifier *)ti; | |
| 3738 } | |
| 3739 ids->data[i] = id; | |
| 3740 } | |
| 3741 | |
| 3742 tm = new TemplateMixin(loc, ident, | |
| 3743 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 3744 ids, tiargs); | |
| 3745 TemplateInstance::syntaxCopy(tm); | |
| 3746 return tm; | |
| 3747 } | |
| 3748 | |
| 3749 void TemplateMixin::semantic(Scope *sc) | |
| 3750 { | |
| 3751 #if LOG | |
| 3752 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 3753 fflush(stdout); | |
| 3754 #endif | |
| 3755 if (semanticdone && | |
| 3756 // This for when a class/struct contains mixin members, and | |
| 3757 // is done over because of forward references | |
| 3758 (!parent || !toParent()->isAggregateDeclaration())) | |
| 3759 { | |
| 3760 #if LOG | |
| 3761 printf("\tsemantic done\n"); | |
| 3762 #endif | |
| 3763 return; | |
| 3764 } | |
| 3765 if (!semanticdone) | |
| 3766 semanticdone = 1; | |
| 3767 #if LOG | |
| 3768 printf("\tdo semantic\n"); | |
| 3769 #endif | |
| 3770 | |
| 3771 Scope *scx = NULL; | |
| 3772 if (scope) | |
| 3773 { sc = scope; | |
| 3774 scx = scope; // save so we don't make redundant copies | |
| 3775 scope = NULL; | |
| 3776 } | |
| 3777 | |
| 3778 // Follow qualifications to find the TemplateDeclaration | |
| 3779 if (!tempdecl) | |
| 3780 { Dsymbol *s; | |
| 3781 int i; | |
| 3782 Identifier *id; | |
| 3783 | |
| 3784 if (tqual) | |
| 3785 { s = tqual->toDsymbol(sc); | |
| 3786 i = 0; | |
| 3787 } | |
| 3788 else | |
| 3789 { | |
| 3790 i = 1; | |
| 3791 id = (Identifier *)idents->data[0]; | |
| 3792 switch (id->dyncast()) | |
| 3793 { | |
| 3794 case DYNCAST_IDENTIFIER: | |
| 3795 s = sc->search(loc, id, NULL); | |
| 3796 break; | |
| 3797 | |
| 3798 case DYNCAST_DSYMBOL: | |
| 3799 { | |
| 3800 TemplateInstance *ti = (TemplateInstance *)id; | |
| 3801 ti->semantic(sc); | |
| 3802 s = ti; | |
| 3803 break; | |
| 3804 } | |
| 3805 default: | |
| 3806 assert(0); | |
| 3807 } | |
| 3808 } | |
| 3809 | |
| 3810 for (; i < idents->dim; i++) | |
| 3811 { | |
| 3812 if (!s) | |
| 3813 break; | |
| 3814 id = (Identifier *)idents->data[i]; | |
| 3815 s = s->searchX(loc, sc, id); | |
| 3816 } | |
| 3817 if (!s) | |
| 3818 { | |
| 3819 error("is not defined"); | |
| 3820 inst = this; | |
| 3821 return; | |
| 3822 } | |
| 3823 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 3824 if (!tempdecl) | |
| 3825 { | |
| 3826 error("%s isn't a template", s->toChars()); | |
| 3827 inst = this; | |
| 3828 return; | |
| 3829 } | |
| 3830 } | |
| 3831 | |
| 3832 // Look for forward reference | |
| 3833 assert(tempdecl); | |
| 3834 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3835 { | |
| 3836 if (!td->scope) | |
| 3837 { | |
| 3838 /* Cannot handle forward references if mixin is a struct member, | |
| 3839 * because addField must happen during struct's semantic, not | |
| 3840 * during the mixin semantic. | |
| 3841 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 3842 * semantic. | |
| 3843 */ | |
| 3844 semanticdone = 0; | |
| 3845 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 3846 if (ad) | |
| 3847 ad->sizeok = 2; | |
| 3848 else | |
| 3849 { | |
| 3850 // Forward reference | |
| 3851 //printf("forward reference - deferring\n"); | |
| 3852 scope = scx ? scx : new Scope(*sc); | |
| 3853 scope->setNoFree(); | |
| 3854 scope->module->addDeferredSemantic(this); | |
| 3855 } | |
| 3856 return; | |
| 3857 } | |
| 3858 } | |
| 3859 | |
| 3860 // Run semantic on each argument, place results in tiargs[] | |
| 3861 semanticTiargs(sc); | |
| 3862 | |
| 3863 tempdecl = findBestMatch(sc); | |
| 3864 if (!tempdecl) | |
| 3865 { inst = this; | |
| 3866 return; // error recovery | |
| 3867 } | |
| 3868 | |
| 3869 if (!ident) | |
| 3870 ident = genIdent(); | |
| 3871 | |
| 3872 inst = this; | |
| 3873 parent = sc->parent; | |
| 3874 | |
| 3875 /* Detect recursive mixin instantiations. | |
| 3876 */ | |
| 3877 for (Dsymbol *s = parent; s; s = s->parent) | |
| 3878 { | |
| 3879 //printf("\ts = '%s'\n", s->toChars()); | |
| 3880 TemplateMixin *tm = s->isTemplateMixin(); | |
| 3881 if (!tm || tempdecl != tm->tempdecl) | |
| 3882 continue; | |
| 3883 | |
| 3884 for (int i = 0; i < tiargs->dim; i++) | |
| 3885 { Object *o = (Object *)tiargs->data[i]; | |
| 3886 Type *ta = isType(o); | |
| 3887 Expression *ea = isExpression(o); | |
| 3888 Dsymbol *sa = isDsymbol(o); | |
| 3889 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 3890 if (ta) | |
| 3891 { | |
| 3892 Type *tmta = isType(tmo); | |
| 3893 if (!tmta) | |
| 3894 goto Lcontinue; | |
| 3895 if (!ta->equals(tmta)) | |
| 3896 goto Lcontinue; | |
| 3897 } | |
| 3898 else if (ea) | |
| 3899 { Expression *tme = isExpression(tmo); | |
| 3900 if (!tme || !ea->equals(tme)) | |
| 3901 goto Lcontinue; | |
| 3902 } | |
| 3903 else if (sa) | |
| 3904 { | |
| 3905 Dsymbol *tmsa = isDsymbol(tmo); | |
| 3906 if (sa != tmsa) | |
| 3907 goto Lcontinue; | |
| 3908 } | |
| 3909 else | |
| 3910 assert(0); | |
| 3911 } | |
| 3912 error("recursive mixin instantiation"); | |
| 3913 return; | |
| 3914 | |
| 3915 Lcontinue: | |
| 3916 continue; | |
| 3917 } | |
| 3918 | |
| 3919 // Copy the syntax trees from the TemplateDeclaration | |
| 3920 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3921 if (!members) | |
| 3922 return; | |
| 3923 | |
| 3924 symtab = new DsymbolTable(); | |
| 3925 | |
| 3926 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 3927 { | |
| 3928 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 3929 if (sds) | |
| 3930 { | |
| 3931 sds->importScope(this, PROTpublic); | |
| 3932 break; | |
| 3933 } | |
| 3934 } | |
| 3935 | |
| 3936 #if LOG | |
| 3937 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3938 #endif | |
| 3939 Scope *scy = sc; | |
| 3940 scy = sc->push(this); | |
| 3941 scy->parent = this; | |
| 3942 | |
| 3943 argsym = new ScopeDsymbol(); | |
| 3944 argsym->parent = scy->parent; | |
| 3945 Scope *scope = scy->push(argsym); | |
| 3946 | |
| 92 | 3947 unsigned errorsave = global.errors; |
| 3948 | |
| 1 | 3949 // Declare each template parameter as an alias for the argument type |
| 3950 declareParameters(scope); | |
| 3951 | |
| 3952 // Add members to enclosing scope, as well as this scope | |
| 3953 for (unsigned i = 0; i < members->dim; i++) | |
| 3954 { Dsymbol *s; | |
| 3955 | |
| 3956 s = (Dsymbol *)members->data[i]; | |
| 3957 s->addMember(scope, this, i); | |
| 3958 //sc->insert(s); | |
| 3959 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 3960 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 3961 } | |
| 3962 | |
| 3963 // Do semantic() analysis on template instance members | |
| 3964 #if LOG | |
| 3965 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3966 #endif | |
| 3967 Scope *sc2; | |
| 3968 sc2 = scope->push(this); | |
| 3969 sc2->offset = sc->offset; | |
| 3970 for (int i = 0; i < members->dim; i++) | |
| 3971 { | |
| 3972 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3973 s->semantic(sc2); | |
| 3974 } | |
| 3975 sc->offset = sc2->offset; | |
| 3976 | |
| 3977 /* The problem is when to parse the initializer for a variable. | |
| 3978 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3979 * for initializers inside a function. | |
| 3980 */ | |
| 3981 // if (sc->parent->isFuncDeclaration()) | |
| 3982 | |
| 3983 semantic2(sc2); | |
| 3984 | |
| 3985 if (sc->func) | |
| 3986 { | |
| 3987 semantic3(sc2); | |
| 3988 } | |
| 3989 | |
| 92 | 3990 // Give additional context info if error occurred during instantiation |
| 3991 if (global.errors != errorsave) | |
| 3992 { | |
| 3993 error("error instantiating"); | |
| 3994 } | |
| 3995 | |
| 1 | 3996 sc2->pop(); |
| 3997 | |
| 3998 scope->pop(); | |
| 3999 | |
| 4000 // if (!isAnonymous()) | |
| 4001 { | |
| 4002 scy->pop(); | |
| 4003 } | |
| 4004 #if LOG | |
| 4005 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4006 #endif | |
| 4007 } | |
| 4008 | |
| 4009 void TemplateMixin::semantic2(Scope *sc) | |
| 4010 { int i; | |
| 4011 | |
| 4012 if (semanticdone >= 2) | |
| 4013 return; | |
| 4014 semanticdone = 2; | |
| 4015 #if LOG | |
| 4016 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4017 #endif | |
| 4018 if (members) | |
| 4019 { | |
| 4020 assert(sc); | |
| 4021 sc = sc->push(argsym); | |
| 4022 sc = sc->push(this); | |
| 4023 for (i = 0; i < members->dim; i++) | |
| 4024 { | |
| 4025 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4026 #if LOG | |
| 4027 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 4028 #endif | |
| 4029 s->semantic2(sc); | |
| 4030 } | |
| 4031 sc = sc->pop(); | |
| 4032 sc->pop(); | |
| 4033 } | |
| 4034 #if LOG | |
| 4035 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4036 #endif | |
| 4037 } | |
| 4038 | |
| 4039 void TemplateMixin::semantic3(Scope *sc) | |
| 4040 { int i; | |
| 4041 | |
| 4042 if (semanticdone >= 3) | |
| 4043 return; | |
| 4044 semanticdone = 3; | |
| 4045 #if LOG | |
| 4046 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 4047 #endif | |
| 4048 if (members) | |
| 4049 { | |
| 4050 sc = sc->push(argsym); | |
| 4051 sc = sc->push(this); | |
| 4052 for (i = 0; i < members->dim; i++) | |
| 4053 { | |
| 4054 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4055 s->semantic3(sc); | |
| 4056 } | |
| 4057 sc = sc->pop(); | |
| 4058 sc->pop(); | |
| 4059 } | |
| 4060 } | |
| 4061 | |
| 4062 void TemplateMixin::inlineScan() | |
| 4063 { | |
| 4064 TemplateInstance::inlineScan(); | |
| 4065 } | |
| 4066 | |
| 4067 char *TemplateMixin::kind() | |
| 4068 { | |
| 4069 return "mixin"; | |
| 4070 } | |
| 4071 | |
| 4072 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 4073 { | |
| 4074 return Dsymbol::oneMember(ps); | |
| 4075 } | |
| 4076 | |
| 4077 int TemplateMixin::hasPointers() | |
| 4078 { | |
| 4079 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 4080 for (size_t i = 0; i < members->dim; i++) | |
| 4081 { | |
| 4082 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4083 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 4084 if (s->hasPointers()) | |
| 4085 { | |
| 4086 return 1; | |
| 4087 } | |
| 4088 } | |
| 4089 return 0; | |
| 4090 } | |
| 4091 | |
| 4092 char *TemplateMixin::toChars() | |
| 4093 { | |
| 4094 OutBuffer buf; | |
| 4095 HdrGenState hgs; | |
| 4096 char *s; | |
| 4097 | |
| 4098 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 4099 s = buf.toChars(); | |
| 4100 buf.data = NULL; | |
| 4101 return s; | |
| 4102 } | |
| 4103 | |
| 4104 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4105 { | |
| 4106 buf->writestring("mixin "); | |
| 4107 int i; | |
| 4108 for (i = 0; i < idents->dim; i++) | |
| 4109 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4110 | |
| 4111 if (i) | |
| 4112 buf->writeByte('.'); | |
| 4113 buf->writestring(id->toChars()); | |
| 4114 } | |
| 4115 buf->writestring("!("); | |
| 4116 if (tiargs) | |
| 4117 { | |
| 4118 for (i = 0; i < tiargs->dim; i++) | |
| 4119 { if (i) | |
| 4120 buf->writebyte(','); | |
| 4121 Object *oarg = (Object *)tiargs->data[i]; | |
| 4122 Type *t = isType(oarg); | |
| 4123 Expression *e = isExpression(oarg); | |
| 4124 Dsymbol *s = isDsymbol(oarg); | |
| 4125 if (t) | |
| 4126 t->toCBuffer(buf, NULL, hgs); | |
| 4127 else if (e) | |
| 4128 e->toCBuffer(buf, hgs); | |
| 4129 else if (s) | |
| 4130 { | |
| 4131 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4132 buf->writestring(p); | |
| 4133 } | |
| 4134 else if (!oarg) | |
| 4135 { | |
| 4136 buf->writestring("NULL"); | |
| 4137 } | |
| 4138 else | |
| 4139 { | |
| 4140 assert(0); | |
| 4141 } | |
| 4142 } | |
| 4143 } | |
| 4144 buf->writebyte(')'); | |
| 4145 buf->writebyte(';'); | |
| 4146 buf->writenl(); | |
| 4147 } | |
| 4148 | |
| 4149 | |
| 4150 void TemplateMixin::toObjFile() | |
| 4151 { | |
| 4152 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4153 TemplateInstance::toObjFile(); | |
| 4154 } | |
| 4155 |