Mercurial > projects > ldc
annotate dmd/template.c @ 1137:45d73f0a9b43
Automated merge with http://hg.dsource.org/projects/ldc
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Tue, 24 Mar 2009 14:34:16 +0100 |
| parents | b30fe7e1dbb9 |
| children | 1860414bf3b7 |
| rev | line source |
|---|---|
| 336 | 1 |
| 2 // Compiler implementation of the D programming language | |
|
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3 // Copyright (c) 1999-2009 by Digital Mars |
| 336 | 4 // All Rights Reserved |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 // Handle template implementation | |
| 12 | |
| 13 #include <stdio.h> | |
| 14 #include <assert.h> | |
| 15 | |
| 16 #if !IN_LLVM | |
| 17 #if _WIN32 | |
| 18 #include <windows.h> | |
| 19 long __cdecl __ehfilter(LPEXCEPTION_POINTERS ep); | |
| 20 #endif | |
| 21 #endif | |
| 22 | |
| 23 #include "root.h" | |
|
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24 #include "rmem.h" |
| 336 | 25 #include "stringtable.h" |
| 26 #include "mars.h" | |
| 27 #include "identifier.h" | |
| 28 #include "mtype.h" | |
| 29 #include "template.h" | |
| 30 #include "init.h" | |
| 31 #include "expression.h" | |
| 32 #include "scope.h" | |
| 33 #include "module.h" | |
| 34 #include "aggregate.h" | |
| 35 #include "declaration.h" | |
| 36 #include "dsymbol.h" | |
| 37 #include "hdrgen.h" | |
| 38 | |
| 39 #define LOG 0 | |
| 40 | |
| 41 /******************************************** | |
| 42 * These functions substitute for dynamic_cast. dynamic_cast does not work | |
| 43 * on earlier versions of gcc. | |
| 44 */ | |
| 45 | |
| 46 Expression *isExpression(Object *o) | |
| 47 { | |
| 48 //return dynamic_cast<Expression *>(o); | |
| 49 if (!o || o->dyncast() != DYNCAST_EXPRESSION) | |
| 50 return NULL; | |
| 51 return (Expression *)o; | |
| 52 } | |
| 53 | |
| 54 Dsymbol *isDsymbol(Object *o) | |
| 55 { | |
| 56 //return dynamic_cast<Dsymbol *>(o); | |
| 57 if (!o || o->dyncast() != DYNCAST_DSYMBOL) | |
| 58 return NULL; | |
| 59 return (Dsymbol *)o; | |
| 60 } | |
| 61 | |
| 62 Type *isType(Object *o) | |
| 63 { | |
| 64 //return dynamic_cast<Type *>(o); | |
| 65 if (!o || o->dyncast() != DYNCAST_TYPE) | |
| 66 return NULL; | |
| 67 return (Type *)o; | |
| 68 } | |
| 69 | |
| 70 Tuple *isTuple(Object *o) | |
| 71 { | |
| 72 //return dynamic_cast<Tuple *>(o); | |
| 73 if (!o || o->dyncast() != DYNCAST_TUPLE) | |
| 74 return NULL; | |
| 75 return (Tuple *)o; | |
| 76 } | |
| 77 | |
| 78 | |
| 79 /*********************** | |
| 80 * Try to get arg as a type. | |
| 81 */ | |
| 82 | |
| 83 Type *getType(Object *o) | |
| 84 { | |
| 85 Type *t = isType(o); | |
| 86 if (!t) | |
| 87 { Expression *e = isExpression(o); | |
| 88 if (e) | |
| 89 t = e->type; | |
| 90 } | |
| 91 return t; | |
| 92 } | |
| 93 | |
| 94 Dsymbol *getDsymbol(Object *oarg) | |
| 95 { | |
| 96 Dsymbol *sa; | |
| 97 Expression *ea = isExpression(oarg); | |
| 98 if (ea) | |
| 99 { // Try to convert Expression to symbol | |
| 100 if (ea->op == TOKvar) | |
| 101 sa = ((VarExp *)ea)->var; | |
| 102 else if (ea->op == TOKfunction) | |
| 103 sa = ((FuncExp *)ea)->fd; | |
| 104 else | |
| 105 sa = NULL; | |
| 106 } | |
| 107 else | |
| 108 { // Try to convert Type to symbol | |
| 109 Type *ta = isType(oarg); | |
| 110 if (ta) | |
| 111 sa = ta->toDsymbol(NULL); | |
| 112 else | |
| 113 sa = isDsymbol(oarg); // if already a symbol | |
| 114 } | |
| 115 return sa; | |
| 116 } | |
| 117 | |
| 118 /****************************** | |
| 119 * If o1 matches o2, return 1. | |
| 120 * Else, return 0. | |
| 121 */ | |
| 122 | |
| 123 int match(Object *o1, Object *o2, TemplateDeclaration *tempdecl, Scope *sc) | |
| 124 { | |
| 125 Type *t1 = isType(o1); | |
| 126 Type *t2 = isType(o2); | |
| 127 Expression *e1 = isExpression(o1); | |
| 128 Expression *e2 = isExpression(o2); | |
| 129 Dsymbol *s1 = isDsymbol(o1); | |
| 130 Dsymbol *s2 = isDsymbol(o2); | |
| 131 Tuple *v1 = isTuple(o1); | |
| 132 Tuple *v2 = isTuple(o2); | |
| 133 | |
| 134 //printf("\t match t1 %p t2 %p, e1 %p e2 %p, s1 %p s2 %p, v1 %p v2 %p\n", t1,t2,e1,e2,s1,s2,v1,v2); | |
| 135 | |
| 136 /* A proper implementation of the various equals() overrides | |
| 137 * should make it possible to just do o1->equals(o2), but | |
| 138 * we'll do that another day. | |
| 139 */ | |
| 140 | |
| 141 if (t1) | |
| 142 { | |
| 143 /* if t1 is an instance of ti, then give error | |
| 144 * about recursive expansions. | |
| 145 */ | |
| 146 Dsymbol *s = t1->toDsymbol(sc); | |
| 147 if (s && s->parent) | |
| 148 { TemplateInstance *ti1 = s->parent->isTemplateInstance(); | |
| 149 if (ti1 && ti1->tempdecl == tempdecl) | |
| 150 { | |
| 151 for (Scope *sc1 = sc; sc1; sc1 = sc1->enclosing) | |
| 152 { | |
| 153 if (sc1->scopesym == ti1) | |
| 154 { | |
| 155 error("recursive template expansion for template argument %s", t1->toChars()); | |
| 156 return 1; // fake a match | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 if (!t2 || !t1->equals(t2)) | |
| 163 goto Lnomatch; | |
| 164 } | |
| 165 else if (e1) | |
| 166 { | |
| 167 #if 0 | |
| 168 if (e1 && e2) | |
| 169 { | |
| 170 printf("match %d\n", e1->equals(e2)); | |
| 171 e1->print(); | |
| 172 e2->print(); | |
| 173 e1->type->print(); | |
| 174 e2->type->print(); | |
| 175 } | |
| 176 #endif | |
| 177 if (!e2) | |
| 178 goto Lnomatch; | |
| 179 if (!e1->equals(e2)) | |
| 180 goto Lnomatch; | |
| 181 } | |
| 182 else if (s1) | |
| 183 { | |
| 184 //printf("%p %s, %p %s\n", s1, s1->toChars(), s2, s2->toChars()); | |
| 185 if (!s2 || !s1->equals(s2) || s1->parent != s2->parent) | |
| 186 { | |
| 187 goto Lnomatch; | |
| 188 } | |
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189 #if V2 |
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190 VarDeclaration *v1 = s1->isVarDeclaration(); |
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191 VarDeclaration *v2 = s2->isVarDeclaration(); |
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192 if (v1 && v2 && v1->storage_class & v2->storage_class & STCmanifest) |
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193 { ExpInitializer *ei1 = v1->init->isExpInitializer(); |
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194 ExpInitializer *ei2 = v2->init->isExpInitializer(); |
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195 if (ei1 && ei2 && !ei1->exp->equals(ei2->exp)) |
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196 goto Lnomatch; |
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197 } |
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198 #endif |
| 336 | 199 } |
| 200 else if (v1) | |
| 201 { | |
| 202 if (!v2) | |
| 203 goto Lnomatch; | |
| 204 if (v1->objects.dim != v2->objects.dim) | |
| 205 goto Lnomatch; | |
| 206 for (size_t i = 0; i < v1->objects.dim; i++) | |
| 207 { | |
| 208 if (!match((Object *)v1->objects.data[i], | |
| 209 (Object *)v2->objects.data[i], | |
| 210 tempdecl, sc)) | |
| 211 goto Lnomatch; | |
| 212 } | |
| 213 } | |
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214 //printf("match\n"); |
| 336 | 215 return 1; // match |
| 216 Lnomatch: | |
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217 //printf("nomatch\n"); |
| 336 | 218 return 0; // nomatch; |
| 219 } | |
| 220 | |
| 221 /**************************************** | |
| 222 */ | |
| 223 | |
| 224 void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg) | |
| 225 { | |
| 226 //printf("ObjectToCBuffer()\n"); | |
| 227 Type *t = isType(oarg); | |
| 228 Expression *e = isExpression(oarg); | |
| 229 Dsymbol *s = isDsymbol(oarg); | |
| 230 Tuple *v = isTuple(oarg); | |
| 231 if (t) | |
| 232 { //printf("\tt: %s ty = %d\n", t->toChars(), t->ty); | |
| 233 t->toCBuffer(buf, NULL, hgs); | |
| 234 } | |
| 235 else if (e) | |
| 236 e->toCBuffer(buf, hgs); | |
| 237 else if (s) | |
| 238 { | |
| 239 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 240 buf->writestring(p); | |
| 241 } | |
| 242 else if (v) | |
| 243 { | |
| 244 Objects *args = &v->objects; | |
| 245 for (size_t i = 0; i < args->dim; i++) | |
| 246 { | |
| 247 if (i) | |
| 248 buf->writeByte(','); | |
| 249 Object *o = (Object *)args->data[i]; | |
| 250 ObjectToCBuffer(buf, hgs, o); | |
| 251 } | |
| 252 } | |
| 253 else if (!oarg) | |
| 254 { | |
| 255 buf->writestring("NULL"); | |
| 256 } | |
| 257 else | |
| 258 { | |
| 259 #ifdef DEBUG | |
| 260 printf("bad Object = %p\n", oarg); | |
| 261 #endif | |
| 262 assert(0); | |
| 263 } | |
| 264 } | |
| 265 | |
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266 #if V2 |
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267 Object *objectSyntaxCopy(Object *o) |
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268 { |
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269 if (!o) |
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270 return NULL; |
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271 Type *t = isType(o); |
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272 if (t) |
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273 return t->syntaxCopy(); |
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274 Expression *e = isExpression(o); |
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275 if (e) |
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276 return e->syntaxCopy(); |
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277 return o; |
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278 } |
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279 #endif |
| 336 | 280 |
| 281 | |
| 282 /* ======================== TemplateDeclaration ============================= */ | |
| 283 | |
| 284 TemplateDeclaration::TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters, Array *decldefs) | |
| 285 : ScopeDsymbol(id) | |
| 286 { | |
| 287 #if LOG | |
| 288 printf("TemplateDeclaration(this = %p, id = '%s')\n", this, id->toChars()); | |
| 289 #endif | |
| 290 #if 0 | |
| 291 if (parameters) | |
| 292 for (int i = 0; i < parameters->dim; i++) | |
| 293 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 294 //printf("\tparameter[%d] = %p\n", i, tp); | |
| 295 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 296 | |
| 297 if (ttp) | |
| 298 { | |
| 299 printf("\tparameter[%d] = %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 300 } | |
| 301 } | |
| 302 #endif | |
| 303 this->loc = loc; | |
| 304 this->parameters = parameters; | |
| 305 this->origParameters = parameters; | |
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306 #if V2 |
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307 this->constraint = constraint; |
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308 #endif |
| 336 | 309 this->members = decldefs; |
| 310 this->overnext = NULL; | |
| 311 this->overroot = NULL; | |
| 312 this->scope = NULL; | |
| 313 this->onemember = NULL; | |
| 314 } | |
| 315 | |
| 316 Dsymbol *TemplateDeclaration::syntaxCopy(Dsymbol *) | |
| 317 { | |
| 318 //printf("TemplateDeclaration::syntaxCopy()\n"); | |
| 319 TemplateDeclaration *td; | |
| 320 TemplateParameters *p; | |
| 321 Array *d; | |
| 322 | |
| 323 p = NULL; | |
| 324 if (parameters) | |
| 325 { | |
| 326 p = new TemplateParameters(); | |
| 327 p->setDim(parameters->dim); | |
| 328 for (int i = 0; i < p->dim; i++) | |
| 329 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 330 p->data[i] = (void *)tp->syntaxCopy(); | |
| 331 } | |
| 332 } | |
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333 #if V2 |
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334 Expression *e = NULL; |
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335 if (constraint) |
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336 e = constraint->syntaxCopy(); |
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337 #endif |
| 336 | 338 d = Dsymbol::arraySyntaxCopy(members); |
| 339 td = new TemplateDeclaration(loc, ident, p, d); | |
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340 |
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341 // LDC |
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342 td->intrinsicName = intrinsicName; |
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343 |
| 336 | 344 return td; |
| 345 } | |
| 346 | |
| 347 void TemplateDeclaration::semantic(Scope *sc) | |
| 348 { | |
| 349 #if LOG | |
| 350 printf("TemplateDeclaration::semantic(this = %p, id = '%s')\n", this, ident->toChars()); | |
| 351 #endif | |
| 352 if (scope) | |
| 353 return; // semantic() already run | |
| 354 | |
| 355 if (sc->func) | |
| 356 { | |
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357 #if DMDV1 |
| 336 | 358 error("cannot declare template at function scope %s", sc->func->toChars()); |
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359 #endif |
| 336 | 360 } |
| 361 | |
| 362 if (/*global.params.useArrayBounds &&*/ sc->module) | |
| 363 { | |
| 364 // Generate this function as it may be used | |
| 365 // when template is instantiated in other modules | |
| 366 sc->module->toModuleArray(); | |
| 367 } | |
| 368 | |
| 369 if (/*global.params.useAssert &&*/ sc->module) | |
| 370 { | |
| 371 // Generate this function as it may be used | |
| 372 // when template is instantiated in other modules | |
| 373 sc->module->toModuleAssert(); | |
| 374 } | |
| 375 | |
| 376 /* Remember Scope for later instantiations, but make | |
| 377 * a copy since attributes can change. | |
| 378 */ | |
| 379 this->scope = new Scope(*sc); | |
| 380 this->scope->setNoFree(); | |
| 381 | |
| 382 // Set up scope for parameters | |
| 383 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 384 paramsym->parent = sc->parent; | |
| 385 Scope *paramscope = sc->push(paramsym); | |
| 386 paramscope->parameterSpecialization = 1; | |
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387 paramscope->stc = 0; |
| 336 | 388 |
| 389 if (global.params.doDocComments) | |
| 390 { | |
| 391 origParameters = new TemplateParameters(); | |
| 392 origParameters->setDim(parameters->dim); | |
| 393 for (int i = 0; i < parameters->dim; i++) | |
| 394 { | |
| 395 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 396 origParameters->data[i] = (void *)tp->syntaxCopy(); | |
| 397 } | |
| 398 } | |
| 399 | |
| 400 for (int i = 0; i < parameters->dim; i++) | |
| 401 { | |
| 402 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 403 | |
| 404 tp->declareParameter(paramscope); | |
| 405 } | |
| 406 | |
| 407 for (int i = 0; i < parameters->dim; i++) | |
| 408 { | |
| 409 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 410 | |
| 411 tp->semantic(paramscope); | |
| 412 if (i + 1 != parameters->dim && tp->isTemplateTupleParameter()) | |
| 413 error("template tuple parameter must be last one"); | |
| 414 } | |
| 415 | |
| 416 paramscope->pop(); | |
| 417 | |
| 418 if (members) | |
| 419 { | |
| 420 Dsymbol *s; | |
| 421 if (Dsymbol::oneMembers(members, &s)) | |
| 422 { | |
| 423 if (s && s->ident && s->ident->equals(ident)) | |
| 424 { | |
| 425 onemember = s; | |
| 426 s->parent = this; | |
| 427 } | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 /* BUG: should check: | |
| 432 * o no virtual functions or non-static data members of classes | |
| 433 */ | |
| 434 } | |
| 435 | |
| 436 const char *TemplateDeclaration::kind() | |
| 437 { | |
| 438 return (onemember && onemember->isAggregateDeclaration()) | |
| 439 ? onemember->kind() | |
| 440 : (char *)"template"; | |
| 441 } | |
| 442 | |
| 443 /********************************** | |
| 444 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 445 * Return !=0 if successful; i.e. no conflict. | |
| 446 */ | |
| 447 | |
| 448 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 449 { | |
| 450 TemplateDeclaration **pf; | |
| 451 TemplateDeclaration *f; | |
| 452 | |
| 453 #if LOG | |
| 454 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 455 #endif | |
| 456 f = s->isTemplateDeclaration(); | |
| 457 if (!f) | |
| 458 return FALSE; | |
| 459 TemplateDeclaration *pthis = this; | |
| 460 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 461 { | |
| 462 #if 0 | |
| 463 // Conflict if TemplateParameter's match | |
| 464 // Will get caught anyway later with TemplateInstance, but | |
| 465 // should check it now. | |
| 466 TemplateDeclaration *f2 = *pf; | |
| 467 | |
| 468 if (f->parameters->dim != f2->parameters->dim) | |
| 469 goto Lcontinue; | |
| 470 | |
| 471 for (int i = 0; i < f->parameters->dim; i++) | |
| 472 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 473 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 474 | |
| 475 if (!p1->overloadMatch(p2)) | |
| 476 goto Lcontinue; | |
| 477 } | |
| 478 | |
| 479 #if LOG | |
| 480 printf("\tfalse: conflict\n"); | |
| 481 #endif | |
| 482 return FALSE; | |
| 483 | |
| 484 Lcontinue: | |
| 485 ; | |
| 486 #endif | |
| 487 } | |
| 488 | |
| 489 f->overroot = this; | |
| 490 *pf = f; | |
| 491 #if LOG | |
| 492 printf("\ttrue: no conflict\n"); | |
| 493 #endif | |
| 494 return TRUE; | |
| 495 } | |
| 496 | |
| 497 /*************************************** | |
| 498 * Given that ti is an instance of this TemplateDeclaration, | |
| 499 * deduce the types of the parameters to this, and store | |
| 500 * those deduced types in dedtypes[]. | |
| 501 * Input: | |
| 502 * flag 1: don't do semantic() because of dummy types | |
| 503 * 2: don't change types in matchArg() | |
| 504 * Output: | |
| 505 * dedtypes deduced arguments | |
| 506 * Return match level. | |
| 507 */ | |
| 508 | |
| 509 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 510 Objects *dedtypes, int flag) | |
| 511 { MATCH m; | |
| 512 int dedtypes_dim = dedtypes->dim; | |
| 513 | |
| 514 #define LOGM 0 | |
| 515 #if LOGM | |
| 516 printf("\n+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); | |
| 517 #endif | |
| 518 | |
| 519 #if 0 | |
| 520 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 521 if (ti->tiargs->dim) | |
| 522 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 523 ti->tiargs->dim, | |
| 524 ti->tiargs->data[0]); | |
| 525 #endif | |
| 526 dedtypes->zero(); | |
| 527 | |
| 528 int parameters_dim = parameters->dim; | |
| 529 int variadic = isVariadic() != NULL; | |
| 530 | |
| 531 // If more arguments than parameters, no match | |
| 532 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 533 { | |
| 534 #if LOGM | |
| 535 printf(" no match: more arguments than parameters\n"); | |
| 536 #endif | |
| 537 return MATCHnomatch; | |
| 538 } | |
| 539 | |
| 540 assert(dedtypes_dim == parameters_dim); | |
| 541 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 542 | |
| 543 // Set up scope for parameters | |
| 544 assert((size_t)scope > 0x10000); | |
| 545 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 546 paramsym->parent = scope->parent; | |
| 547 Scope *paramscope = scope->push(paramsym); | |
|
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548 paramscope->stc = 0; |
| 336 | 549 |
| 550 // Attempt type deduction | |
| 551 m = MATCHexact; | |
| 552 for (int i = 0; i < dedtypes_dim; i++) | |
| 553 { MATCH m2; | |
| 554 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 555 Declaration *sparam; | |
| 556 | |
| 557 //printf("\targument [%d]\n", i); | |
| 558 #if LOGM | |
| 559 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); | |
| 560 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 561 if (ttp) | |
| 562 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 563 #endif | |
| 564 | |
| 565 #if DMDV1 | |
| 566 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 567 #else | |
| 568 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam, (flag & 2) ? 1 : 0); | |
| 569 | |
| 570 #endif | |
| 571 //printf("\tm2 = %d\n", m2); | |
| 572 | |
| 573 if (m2 == MATCHnomatch) | |
| 574 { | |
| 575 #if 0 | |
| 576 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 577 #endif | |
| 578 goto Lnomatch; | |
| 579 } | |
| 580 | |
| 581 if (m2 < m) | |
| 582 m = m2; | |
| 583 | |
| 584 if (!flag) | |
| 585 sparam->semantic(paramscope); | |
| 586 if (!paramscope->insert(sparam)) | |
| 587 goto Lnomatch; | |
| 588 } | |
| 589 | |
| 590 if (!flag) | |
| 591 { | |
|
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592 /* Any parameter left without a type gets the type of |
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593 * its corresponding arg |
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|
594 */ |
| 336 | 595 for (int i = 0; i < dedtypes_dim; i++) |
| 596 { | |
| 597 if (!dedtypes->data[i]) | |
| 598 { assert(i < ti->tiargs->dim); | |
| 599 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 600 } | |
| 601 } | |
| 602 } | |
| 603 | |
|
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604 #if DMDV2 |
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605 if (m && constraint && !(flag & 1)) |
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606 { /* Check to see if constraint is satisfied. |
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607 */ |
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608 Expression *e = constraint->syntaxCopy(); |
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609 paramscope->flags |= SCOPEstaticif; |
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610 e = e->semantic(paramscope); |
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611 e = e->optimize(WANTvalue | WANTinterpret); |
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612 if (e->isBool(TRUE)) |
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613 ; |
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614 else if (e->isBool(FALSE)) |
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615 goto Lnomatch; |
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616 else |
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617 { |
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618 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
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|
619 } |
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620 } |
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621 #endif |
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622 |
| 336 | 623 #if LOGM |
| 624 // Print out the results | |
| 625 printf("--------------------------\n"); | |
| 626 printf("template %s\n", toChars()); | |
| 627 printf("instance %s\n", ti->toChars()); | |
| 628 if (m) | |
| 629 { | |
| 630 for (int i = 0; i < dedtypes_dim; i++) | |
| 631 { | |
| 632 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 633 Object *oarg; | |
| 634 | |
| 635 printf(" [%d]", i); | |
| 636 | |
| 637 if (i < ti->tiargs->dim) | |
| 638 oarg = (Object *)ti->tiargs->data[i]; | |
| 639 else | |
| 640 oarg = NULL; | |
| 641 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 642 } | |
| 643 } | |
| 644 else | |
| 645 goto Lnomatch; | |
| 646 #endif | |
| 647 | |
| 648 #if LOGM | |
| 649 printf(" match = %d\n", m); | |
| 650 #endif | |
| 651 goto Lret; | |
| 652 | |
| 653 Lnomatch: | |
| 654 #if LOGM | |
| 655 printf(" no match\n"); | |
| 656 #endif | |
| 657 m = MATCHnomatch; | |
| 658 | |
| 659 Lret: | |
| 660 paramscope->pop(); | |
| 661 #if LOGM | |
| 662 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); | |
| 663 #endif | |
| 664 return m; | |
| 665 } | |
| 666 | |
| 667 /******************************************** | |
| 668 * Determine partial specialization order of 'this' vs td2. | |
| 669 * Returns: | |
| 670 * 1 this is at least as specialized as td2 | |
| 671 * 0 td2 is more specialized than this | |
| 672 */ | |
| 673 | |
| 674 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 675 { | |
| 676 /* This works by taking the template parameters to this template | |
| 677 * declaration and feeding them to td2 as if it were a template | |
| 678 * instance. | |
| 679 * If it works, then this template is at least as specialized | |
| 680 * as td2. | |
| 681 */ | |
| 682 | |
| 683 TemplateInstance ti(0, ident); // create dummy template instance | |
| 684 Objects dedtypes; | |
| 685 | |
| 686 #define LOG_LEASTAS 0 | |
| 687 | |
| 688 #if LOG_LEASTAS | |
| 689 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 690 #endif | |
| 691 | |
| 692 // Set type arguments to dummy template instance to be types | |
| 693 // generated from the parameters to this template declaration | |
| 694 ti.tiargs = new Objects(); | |
| 695 ti.tiargs->setDim(parameters->dim); | |
| 696 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 697 { | |
| 698 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 699 | |
| 700 void *p = tp->dummyArg(); | |
| 701 if (p) | |
| 702 ti.tiargs->data[i] = p; | |
| 703 else | |
| 704 ti.tiargs->setDim(i); | |
| 705 } | |
| 706 | |
| 707 // Temporary Array to hold deduced types | |
| 708 //dedtypes.setDim(parameters->dim); | |
| 709 dedtypes.setDim(td2->parameters->dim); | |
| 710 | |
| 711 // Attempt a type deduction | |
| 712 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 713 { | |
| 714 /* A non-variadic template is more specialized than a | |
| 715 * variadic one. | |
| 716 */ | |
| 717 if (isVariadic() && !td2->isVariadic()) | |
| 718 goto L1; | |
| 719 | |
| 720 #if LOG_LEASTAS | |
| 721 printf(" matches, so is least as specialized\n"); | |
| 722 #endif | |
| 723 return 1; | |
| 724 } | |
| 725 L1: | |
| 726 #if LOG_LEASTAS | |
| 727 printf(" doesn't match, so is not as specialized\n"); | |
| 728 #endif | |
| 729 return 0; | |
| 730 } | |
| 731 | |
| 732 | |
| 733 /************************************************* | |
| 734 * Match function arguments against a specific template function. | |
| 735 * Input: | |
|
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|
736 * loc instantiation location |
| 336 | 737 * targsi Expression/Type initial list of template arguments |
|
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|
738 * ethis 'this' argument if !NULL |
| 336 | 739 * fargs arguments to function |
| 740 * Output: | |
| 741 * dedargs Expression/Type deduced template arguments | |
| 742 * Returns: | |
| 743 * match level | |
| 744 */ | |
| 745 | |
|
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diff
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|
746 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Loc loc, Objects *targsi, |
|
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diff
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|
747 Expression *ethis, Expressions *fargs, |
| 336 | 748 Objects *dedargs) |
| 749 { | |
| 750 size_t i; | |
| 751 size_t nfparams; | |
| 752 size_t nfargs; | |
| 753 size_t nargsi; // array size of targsi | |
| 754 int fptupindex = -1; | |
| 755 int tuple_dim = 0; | |
| 756 MATCH match = MATCHexact; | |
| 757 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 758 TypeFunction *fdtype; // type of fd | |
| 759 TemplateTupleParameter *tp; | |
| 760 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 761 | |
| 762 #if 0 | |
| 763 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); | |
| 764 for (i = 0; i < fargs->dim; i++) | |
| 765 { Expression *e = (Expression *)fargs->data[i]; | |
| 766 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 767 } | |
| 768 #endif | |
| 769 | |
| 770 assert((size_t)scope > 0x10000); | |
| 771 | |
| 772 dedargs->setDim(parameters->dim); | |
| 773 dedargs->zero(); | |
| 774 | |
| 775 dedtypes.setDim(parameters->dim); | |
| 776 dedtypes.zero(); | |
| 777 | |
| 778 // Set up scope for parameters | |
| 779 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 780 paramsym->parent = scope->parent; | |
| 781 Scope *paramscope = scope->push(paramsym); | |
| 782 | |
| 783 tp = isVariadic(); | |
| 784 | |
| 785 nargsi = 0; | |
| 786 if (targsi) | |
| 787 { // Set initial template arguments | |
| 788 | |
| 789 nargsi = targsi->dim; | |
| 790 if (nargsi > parameters->dim) | |
| 791 { if (!tp) | |
| 792 goto Lnomatch; | |
| 793 dedargs->setDim(nargsi); | |
| 794 dedargs->zero(); | |
| 795 } | |
| 796 | |
| 797 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 798 | |
| 799 for (i = 0; i < nargsi; i++) | |
|
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diff
changeset
|
800 { assert(i < parameters->dim); |
|
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diff
changeset
|
801 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
| 336 | 802 MATCH m; |
| 803 Declaration *sparam; | |
| 804 | |
| 805 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 806 //printf("\tdeduceType m = %d\n", m); | |
| 807 if (m == MATCHnomatch) | |
| 808 goto Lnomatch; | |
| 809 if (m < match) | |
| 810 match = m; | |
| 811 | |
| 812 sparam->semantic(paramscope); | |
| 813 if (!paramscope->insert(sparam)) | |
| 814 goto Lnomatch; | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 assert(fd->type->ty == Tfunction); | |
| 819 fdtype = (TypeFunction *)fd->type; | |
| 820 | |
| 821 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 822 nfargs = fargs->dim; // number of function arguments | |
| 823 | |
| 824 /* Check for match of function arguments with variadic template | |
| 825 * parameter, such as: | |
| 826 * | |
| 827 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 828 * void main() { Foo(1,2,3); } | |
| 829 */ | |
| 830 tp = isVariadic(); | |
| 831 if (tp) // if variadic | |
| 832 { | |
| 833 if (nfparams == 0) // if no function parameters | |
| 834 { | |
| 835 Tuple *t = new Tuple(); | |
| 836 //printf("t = %p\n", t); | |
| 837 dedargs->data[parameters->dim - 1] = (void *)t; | |
|
1103
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- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
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diff
changeset
|
838 declareParameter(paramscope, tp, t); |
| 336 | 839 goto L2; |
| 840 } | |
| 841 else if (nfargs < nfparams - 1) | |
| 842 goto L1; | |
| 843 else | |
| 844 { | |
| 845 /* Figure out which of the function parameters matches | |
| 846 * the tuple template parameter. Do this by matching | |
| 847 * type identifiers. | |
| 848 * Set the index of this function parameter to fptupindex. | |
| 849 */ | |
| 850 for (fptupindex = 0; fptupindex < nfparams; fptupindex++) | |
| 851 { | |
| 852 Argument *fparam = (Argument *)fdtype->parameters->data[fptupindex]; | |
| 853 if (fparam->type->ty != Tident) | |
| 854 continue; | |
| 855 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 856 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 857 continue; | |
| 858 | |
| 859 if (fdtype->varargs) // variadic function doesn't | |
| 860 goto Lnomatch; // go with variadic template | |
| 861 | |
| 862 /* The types of the function arguments | |
| 863 * now form the tuple argument. | |
| 864 */ | |
| 865 Tuple *t = new Tuple(); | |
| 866 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 867 | |
| 868 tuple_dim = nfargs - (nfparams - 1); | |
| 869 t->objects.setDim(tuple_dim); | |
| 870 for (i = 0; i < tuple_dim; i++) | |
| 871 { Expression *farg = (Expression *)fargs->data[fptupindex + i]; | |
| 872 t->objects.data[i] = (void *)farg->type; | |
| 873 } | |
|
1103
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- Updated to DMD frontend 1.041.
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parents:
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diff
changeset
|
874 declareParameter(paramscope, tp, t); |
| 336 | 875 goto L2; |
| 876 } | |
| 877 fptupindex = -1; | |
| 878 } | |
| 879 } | |
| 880 | |
| 881 L1: | |
| 882 if (nfparams == nfargs) | |
| 883 ; | |
| 884 else if (nfargs > nfparams) | |
| 885 { | |
| 886 if (fdtype->varargs == 0) | |
| 887 goto Lnomatch; // too many args, no match | |
| 888 match = MATCHconvert; // match ... with a conversion | |
| 889 } | |
| 890 | |
| 891 L2: | |
|
875
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892 #if DMDV2 |
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893 // Match 'ethis' to any TemplateThisParameter's |
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894 if (ethis) |
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|
895 { |
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896 for (size_t i = 0; i < parameters->dim; i++) |
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897 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
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898 TemplateThisParameter *ttp = tp->isTemplateThisParameter(); |
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|
899 if (ttp) |
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900 { MATCH m; |
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901 |
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902 Type *t = new TypeIdentifier(0, ttp->ident); |
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903 m = ethis->type->deduceType(scope, t, parameters, &dedtypes); |
|
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|
904 if (!m) |
|
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|
905 goto Lnomatch; |
|
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|
906 if (m < match) |
|
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|
907 match = m; // pick worst match |
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|
908 } |
|
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|
909 } |
|
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|
910 } |
|
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|
911 #endif |
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|
912 |
| 336 | 913 // Loop through the function parameters |
| 914 for (i = 0; i < nfparams; i++) | |
| 915 { | |
| 916 /* Skip over function parameters which wound up | |
| 917 * as part of a template tuple parameter. | |
| 918 */ | |
| 919 if (i == fptupindex) | |
| 920 { if (fptupindex == nfparams - 1) | |
| 921 break; | |
| 922 i += tuple_dim - 1; | |
| 923 continue; | |
| 924 } | |
| 925 | |
| 926 Argument *fparam = Argument::getNth(fdtype->parameters, i); | |
| 927 | |
| 928 if (i >= nfargs) // if not enough arguments | |
| 929 { | |
| 930 if (fparam->defaultArg) | |
| 931 { /* Default arguments do not participate in template argument | |
| 932 * deduction. | |
| 933 */ | |
| 934 goto Lmatch; | |
| 935 } | |
| 936 } | |
| 937 else | |
| 938 { Expression *farg = (Expression *)fargs->data[i]; | |
| 939 #if 0 | |
| 940 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 941 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 942 #endif | |
| 943 | |
| 944 MATCH m; | |
| 945 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); | |
| 946 //printf("\tdeduceType m = %d\n", m); | |
| 947 | |
| 948 /* If no match, see if there's a conversion to a delegate | |
| 949 */ | |
| 950 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 951 { | |
| 952 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 953 TypeFunction *tf = (TypeFunction *)td->next; | |
| 954 | |
| 955 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 956 { | |
| 957 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); | |
| 958 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 959 m = MATCHconvert; | |
| 960 } | |
| 961 //printf("\tm2 = %d\n", m); | |
| 962 } | |
| 963 | |
| 964 if (m) | |
| 965 { if (m < match) | |
| 966 match = m; // pick worst match | |
| 967 continue; | |
| 968 } | |
| 969 } | |
| 970 | |
| 971 /* The following code for variadic arguments closely | |
| 972 * matches TypeFunction::callMatch() | |
| 973 */ | |
| 974 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 975 goto Lnomatch; | |
| 976 | |
| 977 /* Check for match with function parameter T... | |
| 978 */ | |
| 979 Type *tb = fparam->type->toBasetype(); | |
| 980 switch (tb->ty) | |
| 981 { | |
| 982 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 983 case Tsarray: | |
| 984 { TypeSArray *tsa = (TypeSArray *)tb; | |
| 985 integer_t sz = tsa->dim->toInteger(); | |
| 986 if (sz != nfargs - i) | |
| 987 goto Lnomatch; | |
| 988 } | |
| 989 case Tarray: | |
| 990 { TypeArray *ta = (TypeArray *)tb; | |
| 991 for (; i < nfargs; i++) | |
| 992 { | |
| 993 Expression *arg = (Expression *)fargs->data[i]; | |
| 994 assert(arg); | |
| 995 MATCH m; | |
| 996 /* If lazy array of delegates, | |
| 997 * convert arg(s) to delegate(s) | |
| 998 */ | |
| 999 Type *tret = fparam->isLazyArray(); | |
| 1000 if (tret) | |
| 1001 { | |
| 1002 if (ta->next->equals(arg->type)) | |
| 1003 { m = MATCHexact; | |
| 1004 } | |
| 1005 else | |
| 1006 { | |
| 1007 m = arg->implicitConvTo(tret); | |
| 1008 if (m == MATCHnomatch) | |
| 1009 { | |
| 1010 if (tret->toBasetype()->ty == Tvoid) | |
| 1011 m = MATCHconvert; | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 else | |
| 1016 { | |
| 1017 m = arg->type->deduceType(scope, ta->next, parameters, &dedtypes); | |
| 1018 //m = arg->implicitConvTo(ta->next); | |
| 1019 } | |
| 1020 if (m == MATCHnomatch) | |
| 1021 goto Lnomatch; | |
| 1022 if (m < match) | |
| 1023 match = m; | |
| 1024 } | |
| 1025 goto Lmatch; | |
| 1026 } | |
| 1027 case Tclass: | |
| 1028 case Tident: | |
| 1029 goto Lmatch; | |
| 1030 | |
| 1031 default: | |
| 1032 goto Lnomatch; | |
| 1033 } | |
| 1034 } | |
| 1035 | |
| 1036 Lmatch: | |
| 1037 | |
| 1038 /* Fill in any missing arguments with their defaults. | |
| 1039 */ | |
| 1040 for (i = nargsi; i < dedargs->dim; i++) | |
| 1041 { | |
| 1042 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1043 //printf("tp[%d] = %s\n", i, tp->ident->toChars()); | |
| 1044 /* For T:T*, the dedargs is the T*, dedtypes is the T | |
| 1045 * But for function templates, we really need them to match | |
| 1046 */ | |
| 1047 Object *oarg = (Object *)dedargs->data[i]; | |
| 1048 Object *oded = (Object *)dedtypes.data[i]; | |
| 1049 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, oded); | |
| 1050 if (!oarg) | |
| 1051 { | |
| 1052 if (oded) | |
| 1053 { | |
| 1054 if (tp->specialization()) | |
| 1055 { /* The specialization can work as long as afterwards | |
| 1056 * the oded == oarg | |
| 1057 */ | |
| 1058 Declaration *sparam; | |
| 1059 dedargs->data[i] = (void *)oded; | |
|
1103
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diff
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|
1060 MATCH m2 = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam, 0); |
| 336 | 1061 //printf("m2 = %d\n", m2); |
| 1062 if (!m2) | |
| 1063 goto Lnomatch; | |
| 1064 if (m2 < match) | |
| 1065 match = m2; // pick worst match | |
| 1066 if (dedtypes.data[i] != oded) | |
| 1067 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 1068 } | |
| 1069 } | |
| 1070 else | |
|
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|
1071 { oded = tp->defaultArg(loc, paramscope); |
| 336 | 1072 if (!oded) |
| 1073 goto Lnomatch; | |
| 1074 } | |
| 1075 declareParameter(paramscope, tp, oded); | |
| 1076 dedargs->data[i] = (void *)oded; | |
| 1077 } | |
| 1078 } | |
| 1079 | |
|
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1080 #if DMDV2 |
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|
1081 if (constraint) |
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|
1082 { /* Check to see if constraint is satisfied. |
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|
1083 */ |
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|
1084 Expression *e = constraint->syntaxCopy(); |
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|
1085 paramscope->flags |= SCOPEstaticif; |
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1086 e = e->semantic(paramscope); |
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|
1087 e = e->optimize(WANTvalue | WANTinterpret); |
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|
1088 if (e->isBool(TRUE)) |
|
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|
1089 ; |
|
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|
1090 else if (e->isBool(FALSE)) |
|
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|
1091 goto Lnomatch; |
|
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diff
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|
1092 else |
|
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|
1093 { |
|
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changeset
|
1094 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
|
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|
1095 } |
|
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|
1096 } |
|
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|
1097 #endif |
|
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|
1098 |
| 336 | 1099 #if 0 |
| 1100 for (i = 0; i < dedargs->dim; i++) | |
| 1101 { Type *t = (Type *)dedargs->data[i]; | |
| 1102 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 1103 } | |
| 1104 #endif | |
| 1105 | |
| 1106 paramscope->pop(); | |
| 1107 //printf("\tmatch %d\n", match); | |
| 1108 return match; | |
| 1109 | |
| 1110 Lnomatch: | |
| 1111 paramscope->pop(); | |
| 1112 //printf("\tnomatch\n"); | |
| 1113 return MATCHnomatch; | |
| 1114 } | |
| 1115 | |
| 1116 /************************************************** | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
1117 * Declare template parameter tp with value o, and install it in the scope sc. |
| 336 | 1118 */ |
| 1119 | |
| 1120 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 1121 { | |
| 1122 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 1123 | |
| 1124 Type *targ = isType(o); | |
| 1125 Expression *ea = isExpression(o); | |
| 1126 Dsymbol *sa = isDsymbol(o); | |
| 1127 Tuple *va = isTuple(o); | |
| 1128 | |
| 1129 Dsymbol *s; | |
| 1130 | |
| 1131 if (targ) | |
| 1132 { | |
| 1133 //printf("type %s\n", targ->toChars()); | |
| 1134 s = new AliasDeclaration(0, tp->ident, targ); | |
| 1135 } | |
| 1136 else if (sa) | |
| 1137 { | |
| 1138 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 1139 s = new AliasDeclaration(0, tp->ident, sa); | |
| 1140 } | |
| 1141 else if (ea) | |
| 1142 { | |
| 1143 // tdtypes.data[i] always matches ea here | |
| 1144 Initializer *init = new ExpInitializer(loc, ea); | |
| 1145 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1146 assert(tvp); | |
| 1147 | |
| 1148 VarDeclaration *v = new VarDeclaration(loc, tvp->valType, tp->ident, init); | |
| 1149 v->storage_class = STCconst; | |
| 1150 s = v; | |
| 1151 } | |
| 1152 else if (va) | |
| 1153 { | |
| 1154 //printf("\ttuple\n"); | |
| 1155 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 1156 } | |
| 1157 else | |
| 1158 { | |
| 1159 #ifdef DEBUG | |
| 1160 o->print(); | |
| 1161 #endif | |
| 1162 assert(0); | |
| 1163 } | |
| 1164 if (!sc->insert(s)) | |
| 1165 error("declaration %s is already defined", tp->ident->toChars()); | |
| 1166 s->semantic(sc); | |
| 1167 } | |
| 1168 | |
| 1169 /************************************** | |
| 1170 * Determine if TemplateDeclaration is variadic. | |
| 1171 */ | |
| 1172 | |
| 1173 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 1174 { size_t dim = parameters->dim; | |
| 1175 TemplateTupleParameter *tp = NULL; | |
| 1176 | |
| 1177 if (dim) | |
| 1178 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 1179 return tp; | |
| 1180 } | |
| 1181 | |
| 1182 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 1183 { | |
| 1184 return ::isVariadic(parameters); | |
| 1185 } | |
| 1186 | |
| 1187 /*********************************** | |
| 1188 * We can overload templates. | |
| 1189 */ | |
| 1190 | |
| 1191 int TemplateDeclaration::isOverloadable() | |
| 1192 { | |
| 1193 return 1; | |
| 1194 } | |
| 1195 | |
| 1196 /************************************************* | |
| 1197 * Given function arguments, figure out which template function | |
| 1198 * to expand, and return that function. | |
| 1199 * If no match, give error message and return NULL. | |
| 1200 * Input: | |
| 1201 * sc instantiation scope | |
| 1202 * loc instantiation location | |
| 1203 * targsi initial list of template arguments | |
|
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diff
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|
1204 * ethis if !NULL, the 'this' pointer argument |
| 336 | 1205 * fargs arguments to function |
|
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|
1206 * flags 1: do not issue error message on no match, just return NULL |
| 336 | 1207 */ |
| 1208 | |
| 1209 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, | |
|
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|
1210 Objects *targsi, Expression *ethis, Expressions *fargs, int flags) |
| 336 | 1211 { |
| 1212 MATCH m_best = MATCHnomatch; | |
| 1213 TemplateDeclaration *td_ambig = NULL; | |
| 1214 TemplateDeclaration *td_best = NULL; | |
| 1215 Objects *tdargs = new Objects(); | |
| 1216 TemplateInstance *ti; | |
| 1217 FuncDeclaration *fd; | |
| 1218 | |
| 1219 #if 0 | |
| 1220 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); | |
| 1221 printf(" targsi:\n"); | |
| 1222 if (targsi) | |
| 1223 { for (int i = 0; i < targsi->dim; i++) | |
| 1224 { Object *arg = (Object *)targsi->data[i]; | |
| 1225 printf("\t%s\n", arg->toChars()); | |
| 1226 } | |
| 1227 } | |
| 1228 printf(" fargs:\n"); | |
| 1229 for (int i = 0; i < fargs->dim; i++) | |
| 1230 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1231 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1232 //printf("\tty = %d\n", arg->type->ty); | |
| 1233 } | |
| 1234 #endif | |
| 1235 | |
| 1236 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1237 { | |
| 1238 if (!td->scope) | |
| 1239 { | |
| 1240 error("forward reference to template %s", td->toChars()); | |
| 1241 goto Lerror; | |
| 1242 } | |
| 1243 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1244 { | |
| 1245 error("is not a function template"); | |
| 1246 goto Lerror; | |
| 1247 } | |
| 1248 | |
| 1249 MATCH m; | |
| 1250 Objects dedargs; | |
| 1251 | |
|
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|
1252 m = td->deduceFunctionTemplateMatch(loc, targsi, ethis, fargs, &dedargs); |
| 336 | 1253 //printf("deduceFunctionTemplateMatch = %d\n", m); |
| 1254 if (!m) // if no match | |
| 1255 continue; | |
| 1256 | |
| 1257 if (m < m_best) | |
| 1258 goto Ltd_best; | |
| 1259 if (m > m_best) | |
| 1260 goto Ltd; | |
| 1261 | |
| 1262 { | |
| 1263 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1264 int c1 = td->leastAsSpecialized(td_best); | |
| 1265 int c2 = td_best->leastAsSpecialized(td); | |
| 1266 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1267 | |
| 1268 if (c1 > c2) | |
| 1269 goto Ltd; | |
| 1270 else if (c1 < c2) | |
| 1271 goto Ltd_best; | |
| 1272 else | |
| 1273 goto Lambig; | |
| 1274 } | |
| 1275 | |
| 1276 Lambig: // td_best and td are ambiguous | |
| 1277 td_ambig = td; | |
| 1278 continue; | |
| 1279 | |
| 1280 Ltd_best: // td_best is the best match so far | |
| 1281 td_ambig = NULL; | |
| 1282 continue; | |
| 1283 | |
| 1284 Ltd: // td is the new best match | |
| 1285 td_ambig = NULL; | |
| 1286 assert((size_t)td->scope > 0x10000); | |
| 1287 td_best = td; | |
| 1288 m_best = m; | |
| 1289 tdargs->setDim(dedargs.dim); | |
| 1290 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1291 continue; | |
| 1292 } | |
| 1293 if (!td_best) | |
| 1294 { | |
| 1295 error(loc, "does not match any template declaration"); | |
| 1296 goto Lerror; | |
| 1297 } | |
| 1298 if (td_ambig) | |
| 1299 { | |
|
1103
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- Updated to DMD frontend 1.041.
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1089
diff
changeset
|
1300 error(loc, "matches more than one function template declaration:\n %s\nand:\n %s", |
|
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diff
changeset
|
1301 td_best->toChars(), td_ambig->toChars()); |
| 336 | 1302 } |
| 1303 | |
| 1304 /* The best match is td_best with arguments tdargs. | |
| 1305 * Now instantiate the template. | |
| 1306 */ | |
| 1307 assert((size_t)td_best->scope > 0x10000); | |
| 1308 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1309 ti->semantic(sc); | |
| 1310 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1311 if (!fd) | |
| 1312 goto Lerror; | |
| 1313 return fd; | |
| 1314 | |
| 1315 Lerror: | |
| 1316 { | |
|
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|
1317 HdrGenState hgs; |
|
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|
1318 |
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|
1319 OutBuffer bufa; |
|
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|
1320 Objects *args = targsi; |
|
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|
1321 if (args) |
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|
1322 { for (int i = 0; i < args->dim; i++) |
|
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|
1323 { |
|
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|
1324 if (i) |
|
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|
1325 bufa.writeByte(','); |
|
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|
1326 Object *oarg = (Object *)args->data[i]; |
|
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|
1327 ObjectToCBuffer(&bufa, &hgs, oarg); |
|
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|
1328 } |
|
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|
1329 } |
|
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|
1330 |
| 336 | 1331 OutBuffer buf; |
| 1332 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
|
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|
1333 error(loc, "cannot deduce template function from argument types !(%s)(%s)", |
|
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|
1334 bufa.toChars(), buf.toChars()); |
| 336 | 1335 } |
|
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|
1336 return NULL; |
| 336 | 1337 } |
| 1338 | |
| 1339 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1340 { | |
| 1341 #if 0 // Should handle template functions | |
| 1342 if (onemember && onemember->isFuncDeclaration()) | |
| 1343 buf->writestring("foo "); | |
| 1344 #endif | |
| 1345 buf->writestring(kind()); | |
| 1346 buf->writeByte(' '); | |
| 1347 buf->writestring(ident->toChars()); | |
| 1348 buf->writeByte('('); | |
| 1349 for (int i = 0; i < parameters->dim; i++) | |
| 1350 { | |
| 1351 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1352 if (hgs->ddoc) | |
| 1353 tp = (TemplateParameter *)origParameters->data[i]; | |
| 1354 if (i) | |
| 1355 buf->writeByte(','); | |
| 1356 tp->toCBuffer(buf, hgs); | |
| 1357 } | |
| 1358 buf->writeByte(')'); | |
|
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|
1359 #if DMDV2 |
|
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|
1360 if (constraint) |
|
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|
1361 { buf->writestring(" if ("); |
|
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|
1362 constraint->toCBuffer(buf, hgs); |
|
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|
1363 buf->writeByte(')'); |
|
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|
1364 } |
|
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|
1365 #endif |
| 336 | 1366 |
| 1367 if (hgs->hdrgen) | |
| 1368 { | |
| 1369 hgs->tpltMember++; | |
| 1370 buf->writenl(); | |
| 1371 buf->writebyte('{'); | |
| 1372 buf->writenl(); | |
| 1373 for (int i = 0; i < members->dim; i++) | |
| 1374 { | |
| 1375 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1376 s->toCBuffer(buf, hgs); | |
| 1377 } | |
| 1378 buf->writebyte('}'); | |
| 1379 buf->writenl(); | |
| 1380 hgs->tpltMember--; | |
| 1381 } | |
| 1382 } | |
| 1383 | |
| 1384 | |
| 1385 char *TemplateDeclaration::toChars() | |
| 1386 { OutBuffer buf; | |
| 1387 HdrGenState hgs; | |
| 1388 | |
| 1389 memset(&hgs, 0, sizeof(hgs)); | |
| 1390 buf.writestring(ident->toChars()); | |
| 1391 buf.writeByte('('); | |
| 1392 for (int i = 0; i < parameters->dim; i++) | |
| 1393 { | |
| 1394 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1395 if (i) | |
| 1396 buf.writeByte(','); | |
| 1397 tp->toCBuffer(&buf, &hgs); | |
| 1398 } | |
| 1399 buf.writeByte(')'); | |
|
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|
1400 #if DMDV2 |
|
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|
1401 if (constraint) |
|
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diff
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|
1402 { buf.writestring(" if ("); |
|
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Merged DMD 1.038
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diff
changeset
|
1403 constraint->toCBuffer(&buf, &hgs); |
|
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Merged DMD 1.038
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diff
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|
1404 buf.writeByte(')'); |
|
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|
1405 } |
|
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|
1406 #endif |
| 336 | 1407 buf.writeByte(0); |
| 1408 return (char *)buf.extractData(); | |
| 1409 } | |
| 1410 | |
| 1411 /* ======================== Type ============================================ */ | |
| 1412 | |
| 1413 /**** | |
| 1414 * Given an identifier, figure out which TemplateParameter it is. | |
| 1415 * Return -1 if not found. | |
| 1416 */ | |
| 1417 | |
| 1418 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) | |
| 1419 { | |
| 1420 for (size_t i = 0; i < parameters->dim; i++) | |
| 1421 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1422 | |
| 1423 if (tp->ident->equals(id)) | |
| 1424 return i; | |
| 1425 } | |
| 1426 return -1; | |
| 1427 } | |
| 1428 | |
| 1429 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) | |
| 1430 { | |
| 1431 assert(tparam->ty == Tident); | |
| 1432 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1433 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1434 if (tident->idents.dim == 0) | |
| 1435 { | |
| 1436 return templateIdentifierLookup(tident->ident, parameters); | |
| 1437 } | |
| 1438 return -1; | |
| 1439 } | |
| 1440 | |
| 1441 /* These form the heart of template argument deduction. | |
| 1442 * Given 'this' being the type argument to the template instance, | |
| 1443 * it is matched against the template declaration parameter specialization | |
| 1444 * 'tparam' to determine the type to be used for the parameter. | |
| 1445 * Example: | |
| 1446 * template Foo(T:T*) // template declaration | |
| 1447 * Foo!(int*) // template instantiation | |
| 1448 * Input: | |
| 1449 * this = int* | |
| 1450 * tparam = T | |
| 1451 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1452 * Output: | |
| 1453 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1454 */ | |
| 1455 | |
| 1456 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1457 Objects *dedtypes) | |
| 1458 { | |
|
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diff
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|
1459 #if 0 |
|
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Merged DMD 1.038
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diff
changeset
|
1460 printf("Type::deduceType()\n"); |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
1461 printf("\tthis = %d, ", ty); print(); |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
1462 printf("\ttparam = %d, ", tparam->ty); tparam->print(); |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
1463 #endif |
| 336 | 1464 if (!tparam) |
| 1465 goto Lnomatch; | |
| 1466 | |
| 1467 if (this == tparam) | |
| 1468 goto Lexact; | |
| 1469 | |
| 1470 if (tparam->ty == Tident) | |
| 1471 { | |
| 1472 // Determine which parameter tparam is | |
| 1473 int i = templateParameterLookup(tparam, parameters); | |
| 1474 if (i == -1) | |
| 1475 { | |
| 1476 if (!sc) | |
| 1477 goto Lnomatch; | |
| 1478 | |
| 1479 /* Need a loc to go with the semantic routine. | |
| 1480 */ | |
| 1481 Loc loc; | |
| 1482 if (parameters->dim) | |
| 1483 { | |
| 1484 TemplateParameter *tp = (TemplateParameter *)parameters->data[0]; | |
| 1485 loc = tp->loc; | |
| 1486 } | |
| 1487 | |
| 1488 /* BUG: what if tparam is a template instance, that | |
| 1489 * has as an argument another Tident? | |
| 1490 */ | |
| 1491 tparam = tparam->semantic(loc, sc); | |
| 1492 assert(tparam->ty != Tident); | |
| 1493 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1494 } | |
| 1495 | |
| 1496 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1497 | |
| 1498 // Found the corresponding parameter tp | |
| 1499 if (!tp->isTemplateTypeParameter()) | |
| 1500 goto Lnomatch; | |
| 1501 Type *at = (Type *)dedtypes->data[i]; | |
| 1502 if (!at) | |
| 1503 { | |
| 1504 dedtypes->data[i] = (void *)this; | |
| 1505 goto Lexact; | |
| 1506 } | |
| 1507 if (equals(at)) | |
| 1508 goto Lexact; | |
| 1509 else if (ty == Tclass && at->ty == Tclass) | |
| 1510 { | |
| 1511 return (MATCH) implicitConvTo(at); | |
| 1512 } | |
| 1513 else if (ty == Tsarray && at->ty == Tarray && | |
| 1514 nextOf()->equals(at->nextOf())) | |
| 1515 { | |
| 1516 goto Lexact; | |
| 1517 } | |
| 1518 else | |
| 1519 goto Lnomatch; | |
| 1520 } | |
| 1521 | |
| 1522 if (ty != tparam->ty) | |
| 1523 return implicitConvTo(tparam); | |
| 1524 // goto Lnomatch; | |
| 1525 | |
| 1526 if (nextOf()) | |
| 1527 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1528 | |
| 1529 Lexact: | |
| 1530 return MATCHexact; | |
| 1531 | |
| 1532 Lnomatch: | |
| 1533 return MATCHnomatch; | |
| 1534 } | |
| 1535 | |
| 1536 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1537 Objects *dedtypes) | |
| 1538 { | |
| 1539 #if 0 | |
| 1540 printf("TypeSArray::deduceType()\n"); | |
| 1541 printf("\tthis = %d, ", ty); print(); | |
| 1542 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1543 #endif | |
| 1544 | |
| 1545 // Extra check that array dimensions must match | |
| 1546 if (tparam) | |
| 1547 { | |
| 1548 if (tparam->ty == Tsarray) | |
| 1549 { | |
| 1550 TypeSArray *tp = (TypeSArray *)tparam; | |
| 1551 | |
| 1552 if (tp->dim->op == TOKvar && | |
| 1553 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1554 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1555 // This code matches code in TypeInstance::deduceType() | |
| 1556 if (i == -1) | |
| 1557 goto Lnomatch; | |
| 1558 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1559 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1560 if (!tvp) | |
| 1561 goto Lnomatch; | |
| 1562 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1563 if (e) | |
| 1564 { | |
| 1565 if (!dim->equals(e)) | |
| 1566 goto Lnomatch; | |
| 1567 } | |
| 1568 else | |
| 1569 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1570 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1571 if (!m) | |
| 1572 goto Lnomatch; | |
| 1573 dedtypes->data[i] = dim; | |
| 1574 } | |
| 1575 } | |
| 1576 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1577 return MATCHnomatch; | |
| 1578 } | |
| 1579 else if (tparam->ty == Taarray) | |
| 1580 { | |
| 1581 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1582 if (tp->index->ty == Tident) | |
| 1583 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1584 | |
| 1585 if (tident->idents.dim == 0) | |
| 1586 { Identifier *id = tident->ident; | |
| 1587 | |
| 1588 for (size_t i = 0; i < parameters->dim; i++) | |
| 1589 { | |
| 1590 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1591 | |
| 1592 if (tp->ident->equals(id)) | |
| 1593 { // Found the corresponding template parameter | |
| 1594 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1595 if (!tvp || !tvp->valType->isintegral()) | |
| 1596 goto Lnomatch; | |
| 1597 | |
| 1598 if (dedtypes->data[i]) | |
| 1599 { | |
| 1600 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1601 goto Lnomatch; | |
| 1602 } | |
| 1603 else | |
| 1604 { dedtypes->data[i] = (void *)dim; | |
| 1605 } | |
| 1606 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1607 } | |
| 1608 } | |
| 1609 } | |
| 1610 } | |
| 1611 } | |
| 1612 else if (tparam->ty == Tarray) | |
| 1613 { MATCH m; | |
| 1614 | |
| 1615 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1616 if (m == MATCHexact) | |
| 1617 m = MATCHconvert; | |
| 1618 return m; | |
| 1619 } | |
| 1620 } | |
| 1621 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1622 | |
| 1623 Lnomatch: | |
| 1624 return MATCHnomatch; | |
| 1625 } | |
| 1626 | |
| 1627 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1628 { | |
| 1629 #if 0 | |
| 1630 printf("TypeAArray::deduceType()\n"); | |
| 1631 printf("\tthis = %d, ", ty); print(); | |
| 1632 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1633 #endif | |
| 1634 | |
| 1635 // Extra check that index type must match | |
| 1636 if (tparam && tparam->ty == Taarray) | |
| 1637 { | |
| 1638 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1639 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1640 { | |
| 1641 return MATCHnomatch; | |
| 1642 } | |
| 1643 } | |
| 1644 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1645 } | |
| 1646 | |
| 1647 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1648 { | |
| 1649 //printf("TypeFunction::deduceType()\n"); | |
| 1650 //printf("\tthis = %d, ", ty); print(); | |
| 1651 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1652 | |
| 1653 // Extra check that function characteristics must match | |
| 1654 if (tparam && tparam->ty == Tfunction) | |
| 1655 { | |
| 1656 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1657 if (varargs != tp->varargs || | |
| 1658 linkage != tp->linkage) | |
| 1659 return MATCHnomatch; | |
| 1660 | |
| 1661 size_t nfargs = Argument::dim(this->parameters); | |
| 1662 size_t nfparams = Argument::dim(tp->parameters); | |
| 1663 | |
| 1664 /* See if tuple match | |
| 1665 */ | |
| 1666 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1667 { | |
| 1668 /* See if 'A' of the template parameter matches 'A' | |
| 1669 * of the type of the last function parameter. | |
| 1670 */ | |
| 1671 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1672 if (fparam->type->ty != Tident) | |
| 1673 goto L1; | |
| 1674 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1675 if (tid->idents.dim) | |
| 1676 goto L1; | |
| 1677 | |
| 1678 /* Look through parameters to find tuple matching tid->ident | |
| 1679 */ | |
| 1680 size_t tupi = 0; | |
| 1681 for (; 1; tupi++) | |
| 1682 { if (tupi == parameters->dim) | |
| 1683 goto L1; | |
| 1684 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1685 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1686 if (tup && tup->ident->equals(tid->ident)) | |
| 1687 break; | |
| 1688 } | |
| 1689 | |
| 1690 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1691 * now form the tuple argument. | |
| 1692 */ | |
| 1693 int tuple_dim = nfargs - (nfparams - 1); | |
| 1694 | |
| 1695 /* See if existing tuple, and whether it matches or not | |
| 1696 */ | |
| 1697 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1698 if (o) | |
| 1699 { // Existing deduced argument must be a tuple, and must match | |
| 1700 Tuple *t = isTuple(o); | |
| 1701 if (!t || t->objects.dim != tuple_dim) | |
| 1702 return MATCHnomatch; | |
| 1703 for (size_t i = 0; i < tuple_dim; i++) | |
| 1704 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1705 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1706 return MATCHnomatch; | |
| 1707 } | |
| 1708 } | |
| 1709 else | |
| 1710 { // Create new tuple | |
| 1711 Tuple *t = new Tuple(); | |
| 1712 t->objects.setDim(tuple_dim); | |
| 1713 for (size_t i = 0; i < tuple_dim; i++) | |
| 1714 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1715 t->objects.data[i] = (void *)arg->type; | |
| 1716 } | |
| 1717 dedtypes->data[tupi] = (void *)t; | |
| 1718 } | |
| 1719 nfparams--; // don't consider the last parameter for type deduction | |
| 1720 goto L2; | |
| 1721 } | |
| 1722 | |
| 1723 L1: | |
| 1724 if (nfargs != nfparams) | |
| 1725 return MATCHnomatch; | |
| 1726 L2: | |
| 1727 for (size_t i = 0; i < nfparams; i++) | |
| 1728 { | |
| 1729 Argument *a = Argument::getNth(this->parameters, i); | |
| 1730 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1731 if (a->storageClass != ap->storageClass || | |
| 1732 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1733 return MATCHnomatch; | |
| 1734 } | |
| 1735 } | |
| 1736 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1737 } | |
| 1738 | |
| 1739 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1740 { | |
| 1741 // Extra check | |
| 1742 if (tparam && tparam->ty == Tident) | |
| 1743 { | |
| 1744 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1745 | |
| 1746 for (int i = 0; i < idents.dim; i++) | |
| 1747 { | |
| 1748 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1749 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1750 | |
| 1751 if (!id1->equals(id2)) | |
| 1752 return MATCHnomatch; | |
| 1753 } | |
| 1754 } | |
| 1755 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1756 } | |
| 1757 | |
| 1758 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1759 Type *tparam, TemplateParameters *parameters, | |
| 1760 Objects *dedtypes) | |
| 1761 { | |
| 1762 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1763 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1764 | |
| 1765 // Extra check | |
| 1766 if (tparam && tparam->ty == Tinstance) | |
| 1767 { | |
| 1768 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1769 | |
| 1770 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1771 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1772 if (!tp->tempinst->tempdecl) | |
| 1773 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); | |
| 1774 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1775 { | |
| 1776 /* Handle case of: | |
| 1777 * template Foo(T : sa!(T), alias sa) | |
| 1778 */ | |
| 1779 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1780 if (i == -1) | |
| 1781 { /* Didn't find it as a parameter identifier. Try looking | |
| 1782 * it up and seeing if is an alias. See Bugzilla 1454 | |
| 1783 */ | |
| 1784 Dsymbol *s = tempinst->tempdecl->scope->search(0, tp->tempinst->name, NULL); | |
| 1785 if (s) | |
| 1786 { | |
| 1787 s = s->toAlias(); | |
| 1788 TemplateDeclaration *td = s->isTemplateDeclaration(); | |
| 1789 if (td && td == tempinst->tempdecl) | |
| 1790 goto L2; | |
| 1791 } | |
| 1792 goto Lnomatch; | |
| 1793 } | |
| 1794 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; | |
| 1795 // This logic duplicates tpx->matchArg() | |
| 1796 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1797 if (!ta) | |
| 1798 goto Lnomatch; | |
| 1799 Dsymbol *sa = tempinst->tempdecl; | |
| 1800 if (!sa) | |
| 1801 goto Lnomatch; | |
| 1802 if (ta->specAlias && sa != ta->specAlias) | |
| 1803 goto Lnomatch; | |
| 1804 if (dedtypes->data[i]) | |
| 1805 { // Must match already deduced symbol | |
| 1806 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1807 | |
| 1808 if (s != sa) | |
| 1809 goto Lnomatch; | |
| 1810 } | |
| 1811 dedtypes->data[i] = sa; | |
| 1812 } | |
| 1813 } | |
| 1814 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1815 goto Lnomatch; | |
| 1816 | |
| 1817 L2: | |
| 1818 if (tempinst->tiargs->dim != tp->tempinst->tiargs->dim) | |
| 1819 goto Lnomatch; | |
| 1820 | |
| 1821 for (int i = 0; i < tempinst->tiargs->dim; i++) | |
| 1822 { | |
| 1823 //printf("\ttest: tempinst->tiargs[%d]\n", i); | |
| 1824 int j; | |
| 1825 Object *o1 = (Object *)tempinst->tiargs->data[i]; | |
| 1826 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1827 | |
| 1828 Type *t1 = isType(o1); | |
| 1829 Type *t2 = isType(o2); | |
| 1830 | |
| 1831 Expression *e1 = isExpression(o1); | |
| 1832 Expression *e2 = isExpression(o2); | |
| 1833 | |
|
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1834 Dsymbol *s1 = isDsymbol(o1); |
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1835 Dsymbol *s2 = isDsymbol(o2); |
|
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1836 |
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1837 Tuple *v1 = isTuple(o1); |
|
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1838 Tuple *v2 = isTuple(o2); |
| 336 | 1839 #if 0 |
| 1840 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1841 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1842 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1843 if (e2) printf("e2 = %s\n", e2->toChars()); | |
|
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1844 if (s1) printf("s1 = %s\n", s1->toChars()); |
|
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1845 if (s2) printf("s2 = %s\n", s2->toChars()); |
|
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1846 if (v1) printf("v1 = %s\n", v1->toChars()); |
|
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1847 if (v2) printf("v2 = %s\n", v2->toChars()); |
| 336 | 1848 #endif |
| 1849 | |
| 1850 if (t1 && t2) | |
| 1851 { | |
| 1852 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1853 goto Lnomatch; | |
| 1854 } | |
| 1855 else if (e1 && e2) | |
| 1856 { | |
| 1857 if (!e1->equals(e2)) | |
| 1858 { if (e2->op == TOKvar) | |
| 1859 { | |
| 1860 /* | |
| 1861 * (T:Number!(e2), int e2) | |
| 1862 */ | |
| 1863 j = templateIdentifierLookup(((VarExp *)e2)->var->ident, parameters); | |
| 1864 goto L1; | |
| 1865 } | |
| 1866 goto Lnomatch; | |
| 1867 } | |
| 1868 } | |
| 1869 else if (e1 && t2 && t2->ty == Tident) | |
| 1870 { | |
| 1871 j = templateParameterLookup(t2, parameters); | |
| 1872 L1: | |
| 1873 if (j == -1) | |
| 1874 goto Lnomatch; | |
| 1875 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; | |
| 1876 // BUG: use tp->matchArg() instead of the following | |
| 1877 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1878 if (!tv) | |
| 1879 goto Lnomatch; | |
| 1880 Expression *e = (Expression *)dedtypes->data[j]; | |
| 1881 if (e) | |
| 1882 { | |
| 1883 if (!e1->equals(e)) | |
| 1884 goto Lnomatch; | |
| 1885 } | |
| 1886 else | |
| 1887 { Type *vt = tv->valType->semantic(0, sc); | |
| 1888 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1889 if (!m) | |
| 1890 goto Lnomatch; | |
| 1891 dedtypes->data[j] = e1; | |
| 1892 } | |
| 1893 } | |
|
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1894 else if (s1 && t2 && t2->ty == Tident) |
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1895 { |
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1896 j = templateParameterLookup(t2, parameters); |
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1897 if (j == -1) |
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1898 goto Lnomatch; |
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1899 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; |
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1900 // BUG: use tp->matchArg() instead of the following |
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1901 TemplateAliasParameter *ta = tp->isTemplateAliasParameter(); |
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1902 if (!ta) |
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1903 goto Lnomatch; |
|
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1904 Dsymbol *s = (Dsymbol *)dedtypes->data[j]; |
|
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|
1905 if (s) |
|
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1906 { |
|
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1907 if (!s1->equals(s)) |
|
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1908 goto Lnomatch; |
|
b30fe7e1dbb9
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|
1909 } |
|
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|
1910 else |
|
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1911 { |
|
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1912 dedtypes->data[j] = s1; |
|
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|
1913 } |
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1914 } |
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|
1915 else if (s1 && s2) |
|
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|
1916 { |
|
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|
1917 if (!s1->equals(s2)) |
|
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1918 goto Lnomatch; |
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1919 } |
|
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|
1920 // BUG: Need to handle tuple parameters |
| 336 | 1921 else |
| 1922 goto Lnomatch; | |
| 1923 } | |
| 1924 } | |
| 1925 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1926 | |
| 1927 Lnomatch: | |
| 1928 return MATCHnomatch; | |
| 1929 } | |
| 1930 | |
| 1931 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1932 { | |
| 1933 //printf("TypeStruct::deduceType()\n"); | |
| 1934 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1935 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1936 | |
| 1937 /* If this struct is a template struct, and we're matching | |
| 1938 * it against a template instance, convert the struct type | |
| 1939 * to a template instance, too, and try again. | |
| 1940 */ | |
| 1941 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1942 | |
| 1943 if (tparam && tparam->ty == Tinstance) | |
| 1944 { | |
| 1945 if (ti && ti->toAlias() == sym) | |
| 1946 { | |
| 1947 TypeInstance *t = new TypeInstance(0, ti); | |
| 1948 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1949 } | |
| 1950 | |
| 1951 /* Match things like: | |
| 1952 * S!(T).foo | |
| 1953 */ | |
| 1954 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1955 if (tpi->idents.dim) | |
| 1956 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1957 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1958 { | |
| 1959 Type *tparent = sym->parent->getType(); | |
| 1960 if (tparent) | |
| 1961 { | |
| 1962 /* Slice off the .foo in S!(T).foo | |
| 1963 */ | |
| 1964 tpi->idents.dim--; | |
| 1965 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1966 tpi->idents.dim++; | |
| 1967 return m; | |
| 1968 } | |
| 1969 } | |
| 1970 } | |
| 1971 } | |
| 1972 | |
| 1973 // Extra check | |
| 1974 if (tparam && tparam->ty == Tstruct) | |
| 1975 { | |
| 1976 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1977 | |
| 1978 if (sym != tp->sym) | |
| 1979 return MATCHnomatch; | |
| 1980 } | |
| 1981 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1982 } | |
| 1983 | |
| 1984 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1985 { | |
| 1986 // Extra check | |
| 1987 if (tparam && tparam->ty == Tenum) | |
| 1988 { | |
| 1989 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1990 | |
| 1991 if (sym != tp->sym) | |
| 1992 return MATCHnomatch; | |
| 1993 } | |
| 1994 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1995 } | |
| 1996 | |
| 1997 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1998 { | |
| 1999 // Extra check | |
| 2000 if (tparam && tparam->ty == Ttypedef) | |
| 2001 { | |
| 2002 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 2003 | |
| 2004 if (sym != tp->sym) | |
| 2005 return MATCHnomatch; | |
| 2006 } | |
| 2007 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2008 } | |
| 2009 | |
| 2010 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 2011 { | |
| 2012 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 2013 | |
| 2014 /* If this class is a template class, and we're matching | |
| 2015 * it against a template instance, convert the class type | |
| 2016 * to a template instance, too, and try again. | |
| 2017 */ | |
| 2018 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 2019 | |
| 2020 if (tparam && tparam->ty == Tinstance) | |
| 2021 { | |
| 2022 if (ti && ti->toAlias() == sym) | |
| 2023 { | |
| 2024 TypeInstance *t = new TypeInstance(0, ti); | |
| 2025 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 2026 } | |
| 2027 | |
| 2028 /* Match things like: | |
| 2029 * S!(T).foo | |
| 2030 */ | |
| 2031 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 2032 if (tpi->idents.dim) | |
| 2033 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 2034 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 2035 { | |
| 2036 Type *tparent = sym->parent->getType(); | |
| 2037 if (tparent) | |
| 2038 { | |
| 2039 /* Slice off the .foo in S!(T).foo | |
| 2040 */ | |
| 2041 tpi->idents.dim--; | |
| 2042 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 2043 tpi->idents.dim++; | |
| 2044 return m; | |
| 2045 } | |
| 2046 } | |
| 2047 } | |
| 2048 } | |
| 2049 | |
| 2050 // Extra check | |
| 2051 if (tparam && tparam->ty == Tclass) | |
| 2052 { | |
| 2053 TypeClass *tp = (TypeClass *)tparam; | |
| 2054 | |
| 2055 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 2056 return (MATCH) implicitConvTo(tp); | |
| 2057 } | |
| 2058 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2059 } | |
| 2060 | |
| 2061 /* ======================== TemplateParameter =============================== */ | |
| 2062 | |
| 2063 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 2064 { | |
| 2065 this->loc = loc; | |
| 2066 this->ident = ident; | |
| 2067 this->sparam = NULL; | |
| 2068 } | |
| 2069 | |
| 2070 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 2071 { | |
| 2072 return NULL; | |
| 2073 } | |
| 2074 | |
| 2075 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 2076 { | |
| 2077 return NULL; | |
| 2078 } | |
| 2079 | |
| 2080 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 2081 { | |
| 2082 return NULL; | |
| 2083 } | |
| 2084 | |
| 2085 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 2086 { | |
| 2087 return NULL; | |
| 2088 } | |
| 2089 | |
| 2090 #if DMDV2 | |
| 2091 TemplateThisParameter *TemplateParameter::isTemplateThisParameter() | |
| 2092 { | |
| 2093 return NULL; | |
| 2094 } | |
| 2095 #endif | |
| 2096 | |
| 2097 /* ======================== TemplateTypeParameter =========================== */ | |
| 2098 | |
| 2099 // type-parameter | |
| 2100 | |
| 2101 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 2102 Type *defaultType) | |
| 2103 : TemplateParameter(loc, ident) | |
| 2104 { | |
| 2105 this->ident = ident; | |
| 2106 this->specType = specType; | |
| 2107 this->defaultType = defaultType; | |
| 2108 } | |
| 2109 | |
| 2110 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 2111 { | |
| 2112 return this; | |
| 2113 } | |
| 2114 | |
| 2115 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 2116 { | |
| 2117 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 2118 if (tp->specType) | |
| 2119 tp->specType = specType->syntaxCopy(); | |
| 2120 if (defaultType) | |
| 2121 tp->defaultType = defaultType->syntaxCopy(); | |
| 2122 return tp; | |
| 2123 } | |
| 2124 | |
| 2125 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 2126 { | |
| 2127 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 2128 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2129 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2130 if (!sc->insert(sparam)) | |
| 2131 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2132 } | |
| 2133 | |
| 2134 void TemplateTypeParameter::semantic(Scope *sc) | |
| 2135 { | |
| 2136 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 2137 if (specType) | |
| 2138 { | |
| 2139 specType = specType->semantic(loc, sc); | |
| 2140 } | |
| 2141 #if 0 // Don't do semantic() until instantiation | |
| 2142 if (defaultType) | |
| 2143 { | |
| 2144 defaultType = defaultType->semantic(loc, sc); | |
| 2145 } | |
| 2146 #endif | |
| 2147 } | |
| 2148 | |
| 2149 /**************************************** | |
| 2150 * Determine if two TemplateParameters are the same | |
| 2151 * as far as TemplateDeclaration overloading goes. | |
| 2152 * Returns: | |
| 2153 * 1 match | |
| 2154 * 0 no match | |
| 2155 */ | |
| 2156 | |
| 2157 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 2158 { | |
| 2159 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 2160 | |
| 2161 if (ttp) | |
| 2162 { | |
| 2163 if (specType != ttp->specType) | |
| 2164 goto Lnomatch; | |
| 2165 | |
| 2166 if (specType && !specType->equals(ttp->specType)) | |
| 2167 goto Lnomatch; | |
| 2168 | |
| 2169 return 1; // match | |
| 2170 } | |
| 2171 | |
| 2172 Lnomatch: | |
| 2173 return 0; | |
| 2174 } | |
| 2175 | |
| 2176 /******************************************* | |
| 2177 * Match to a particular TemplateParameter. | |
| 2178 * Input: | |
| 2179 * i i'th argument | |
| 2180 * tiargs[] actual arguments to template instance | |
| 2181 * parameters[] template parameters | |
| 2182 * dedtypes[] deduced arguments to template instance | |
| 2183 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 2184 */ | |
| 2185 | |
| 2186 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 2187 int i, TemplateParameters *parameters, Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2188 Declaration **psparam, int flags) |
| 336 | 2189 { |
| 2190 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 2191 Type *t; | |
| 2192 Object *oarg; | |
| 2193 MATCH m = MATCHexact; | |
| 2194 Type *ta; | |
| 2195 | |
| 2196 if (i < tiargs->dim) | |
| 2197 oarg = (Object *)tiargs->data[i]; | |
| 2198 else | |
| 2199 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2200 oarg = defaultArg(loc, sc); |
| 336 | 2201 if (!oarg) |
| 2202 { assert(i < dedtypes->dim); | |
| 2203 // It might have already been deduced | |
| 2204 oarg = (Object *)dedtypes->data[i]; | |
| 2205 if (!oarg) | |
| 2206 goto Lnomatch; | |
| 2207 } | |
| 2208 } | |
| 2209 | |
| 2210 ta = isType(oarg); | |
| 2211 if (!ta) | |
| 2212 goto Lnomatch; | |
| 2213 //printf("ta is %s\n", ta->toChars()); | |
| 2214 | |
| 2215 t = (Type *)dedtypes->data[i]; | |
| 2216 | |
| 2217 if (specType) | |
| 2218 { | |
| 2219 //printf("\tcalling deduceType(): ta is %s, specType is %s\n", ta->toChars(), specType->toChars()); | |
| 2220 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 2221 if (m2 == MATCHnomatch) | |
| 2222 { //printf("\tfailed deduceType\n"); | |
| 2223 goto Lnomatch; | |
| 2224 } | |
| 2225 | |
| 2226 if (m2 < m) | |
| 2227 m = m2; | |
| 2228 t = (Type *)dedtypes->data[i]; | |
| 2229 } | |
| 2230 else | |
| 2231 { | |
| 2232 // So that matches with specializations are better | |
| 2233 m = MATCHconvert; | |
| 2234 if (t) | |
| 2235 { // Must match already deduced type | |
| 2236 | |
| 2237 m = MATCHexact; | |
| 2238 if (!t->equals(ta)) | |
| 2239 { //printf("t = %s ta = %s\n", t->toChars(), ta->toChars()); | |
| 2240 goto Lnomatch; | |
| 2241 } | |
| 2242 } | |
| 2243 } | |
| 2244 | |
| 2245 if (!t) | |
| 2246 { | |
| 2247 dedtypes->data[i] = ta; | |
| 2248 t = ta; | |
| 2249 } | |
| 2250 *psparam = new AliasDeclaration(loc, ident, t); | |
| 2251 //printf("\tm = %d\n", m); | |
| 2252 return m; | |
| 2253 | |
| 2254 Lnomatch: | |
| 2255 *psparam = NULL; | |
| 2256 //printf("\tm = %d\n", MATCHnomatch); | |
| 2257 return MATCHnomatch; | |
| 2258 } | |
| 2259 | |
| 2260 | |
| 2261 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 2262 { | |
| 2263 printf(" %s\n", ident->toChars()); | |
| 2264 | |
| 2265 Type *t = isType(oarg); | |
| 2266 Type *ta = isType(oded); | |
| 2267 | |
| 2268 assert(ta); | |
| 2269 | |
| 2270 if (specType) | |
| 2271 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 2272 if (defaultType) | |
| 2273 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 2274 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 2275 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 2276 } | |
| 2277 | |
| 2278 | |
| 2279 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2280 { | |
| 2281 buf->writestring(ident->toChars()); | |
| 2282 if (specType) | |
| 2283 { | |
| 2284 buf->writestring(" : "); | |
| 2285 specType->toCBuffer(buf, NULL, hgs); | |
| 2286 } | |
| 2287 if (defaultType) | |
| 2288 { | |
| 2289 buf->writestring(" = "); | |
| 2290 defaultType->toCBuffer(buf, NULL, hgs); | |
| 2291 } | |
| 2292 } | |
| 2293 | |
| 2294 | |
| 2295 void *TemplateTypeParameter::dummyArg() | |
| 2296 { Type *t; | |
| 2297 | |
| 2298 if (specType) | |
| 2299 t = specType; | |
| 2300 else | |
| 2301 { // Use this for alias-parameter's too (?) | |
| 2302 t = new TypeIdentifier(loc, ident); | |
| 2303 } | |
| 2304 return (void *)t; | |
| 2305 } | |
| 2306 | |
| 2307 | |
| 2308 Object *TemplateTypeParameter::specialization() | |
| 2309 { | |
| 2310 return specType; | |
| 2311 } | |
| 2312 | |
| 2313 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2314 Object *TemplateTypeParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2315 { |
| 2316 Type *t; | |
| 2317 | |
| 2318 t = defaultType; | |
| 2319 if (t) | |
| 2320 { | |
| 2321 t = t->syntaxCopy(); | |
| 2322 t = t->semantic(loc, sc); | |
| 2323 } | |
| 2324 return t; | |
| 2325 } | |
| 2326 | |
| 2327 /* ======================== TemplateThisParameter =========================== */ | |
| 2328 | |
| 2329 #if DMDV2 | |
| 2330 // this-parameter | |
| 2331 | |
| 2332 TemplateThisParameter::TemplateThisParameter(Loc loc, Identifier *ident, | |
| 2333 Type *specType, | |
| 2334 Type *defaultType) | |
| 2335 : TemplateTypeParameter(loc, ident, specType, defaultType) | |
| 2336 { | |
| 2337 } | |
| 2338 | |
| 2339 TemplateThisParameter *TemplateThisParameter::isTemplateThisParameter() | |
| 2340 { | |
| 2341 return this; | |
| 2342 } | |
| 2343 | |
| 2344 TemplateParameter *TemplateThisParameter::syntaxCopy() | |
| 2345 { | |
| 2346 TemplateThisParameter *tp = new TemplateThisParameter(loc, ident, specType, defaultType); | |
| 2347 if (tp->specType) | |
| 2348 tp->specType = specType->syntaxCopy(); | |
| 2349 if (defaultType) | |
| 2350 tp->defaultType = defaultType->syntaxCopy(); | |
| 2351 return tp; | |
| 2352 } | |
| 2353 | |
| 2354 void TemplateThisParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2355 { | |
| 2356 buf->writestring("this "); | |
| 2357 TemplateTypeParameter::toCBuffer(buf, hgs); | |
| 2358 } | |
| 2359 #endif | |
| 2360 | |
| 2361 /* ======================== TemplateAliasParameter ========================== */ | |
| 2362 | |
| 2363 // alias-parameter | |
| 2364 | |
| 2365 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2366 | |
| 2367 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2368 : TemplateParameter(loc, ident) | |
| 2369 { | |
| 2370 this->ident = ident; | |
| 2371 this->specAliasT = specAliasT; | |
| 2372 this->defaultAlias = defaultAlias; | |
| 2373 | |
| 2374 this->specAlias = NULL; | |
| 2375 } | |
| 2376 | |
| 2377 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2378 { | |
| 2379 return this; | |
| 2380 } | |
| 2381 | |
| 2382 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2383 { | |
| 2384 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2385 if (tp->specAliasT) | |
| 2386 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2387 if (defaultAlias) | |
| 2388 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2389 return tp; | |
| 2390 } | |
| 2391 | |
| 2392 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2393 { | |
| 2394 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2395 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2396 if (!sc->insert(sparam)) | |
| 2397 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2398 } | |
| 2399 | |
| 2400 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2401 { | |
| 2402 if (specAliasT) | |
| 2403 { | |
| 2404 specAlias = specAliasT->toDsymbol(sc); | |
| 2405 if (!specAlias) | |
| 2406 error(loc, "%s is not a symbol", specAliasT->toChars()); | |
| 2407 } | |
| 2408 #if 0 // Don't do semantic() until instantiation | |
| 2409 if (defaultAlias) | |
| 2410 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2411 #endif | |
| 2412 } | |
| 2413 | |
| 2414 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2415 { | |
| 2416 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2417 | |
| 2418 if (tap) | |
| 2419 { | |
| 2420 if (specAlias != tap->specAlias) | |
| 2421 goto Lnomatch; | |
| 2422 | |
| 2423 return 1; // match | |
| 2424 } | |
| 2425 | |
| 2426 Lnomatch: | |
| 2427 return 0; | |
| 2428 } | |
| 2429 | |
| 2430 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2431 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2432 Declaration **psparam, int flags) |
| 336 | 2433 { |
| 2434 Dsymbol *sa; | |
| 2435 Object *oarg; | |
| 2436 Expression *ea; | |
| 2437 | |
| 2438 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2439 | |
| 2440 if (i < tiargs->dim) | |
| 2441 oarg = (Object *)tiargs->data[i]; | |
| 2442 else | |
| 2443 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2444 oarg = defaultArg(loc, sc); |
| 336 | 2445 if (!oarg) |
| 2446 { assert(i < dedtypes->dim); | |
| 2447 // It might have already been deduced | |
| 2448 oarg = (Object *)dedtypes->data[i]; | |
| 2449 if (!oarg) | |
| 2450 goto Lnomatch; | |
| 2451 } | |
| 2452 } | |
| 2453 | |
| 2454 sa = getDsymbol(oarg); | |
| 2455 if (!sa) | |
| 2456 goto Lnomatch; | |
| 2457 | |
| 2458 if (specAlias) | |
| 2459 { | |
| 2460 if (!sa || sa == sdummy) | |
| 2461 goto Lnomatch; | |
| 2462 if (sa != specAlias) | |
| 2463 goto Lnomatch; | |
| 2464 } | |
| 2465 else if (dedtypes->data[i]) | |
| 2466 { // Must match already deduced symbol | |
| 2467 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2468 | |
| 2469 if (!sa || s != sa) | |
| 2470 goto Lnomatch; | |
| 2471 } | |
| 2472 dedtypes->data[i] = sa; | |
| 2473 | |
| 2474 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2475 return MATCHexact; | |
| 2476 | |
| 2477 Lnomatch: | |
| 2478 *psparam = NULL; | |
| 2479 return MATCHnomatch; | |
| 2480 } | |
| 2481 | |
| 2482 | |
| 2483 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2484 { | |
| 2485 printf(" %s\n", ident->toChars()); | |
| 2486 | |
| 2487 Dsymbol *sa = isDsymbol(oded); | |
| 2488 assert(sa); | |
| 2489 | |
| 2490 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2491 } | |
| 2492 | |
| 2493 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2494 { | |
| 2495 buf->writestring("alias "); | |
| 2496 buf->writestring(ident->toChars()); | |
| 2497 if (specAliasT) | |
| 2498 { | |
| 2499 buf->writestring(" : "); | |
| 2500 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2501 } | |
| 2502 if (defaultAlias) | |
| 2503 { | |
| 2504 buf->writestring(" = "); | |
| 2505 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2506 } | |
| 2507 } | |
| 2508 | |
| 2509 | |
| 2510 void *TemplateAliasParameter::dummyArg() | |
| 2511 { Dsymbol *s; | |
| 2512 | |
| 2513 s = specAlias; | |
| 2514 if (!s) | |
| 2515 { | |
| 2516 if (!sdummy) | |
| 2517 sdummy = new Dsymbol(); | |
| 2518 s = sdummy; | |
| 2519 } | |
| 2520 return (void*)s; | |
| 2521 } | |
| 2522 | |
| 2523 | |
| 2524 Object *TemplateAliasParameter::specialization() | |
| 2525 { | |
| 2526 return specAliasT; | |
| 2527 } | |
| 2528 | |
| 2529 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2530 Object *TemplateAliasParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2531 { |
| 2532 Dsymbol *s = NULL; | |
| 2533 | |
| 2534 if (defaultAlias) | |
| 2535 { | |
| 2536 s = defaultAlias->toDsymbol(sc); | |
| 2537 if (!s) | |
| 2538 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2539 } | |
| 2540 return s; | |
| 2541 } | |
| 2542 | |
| 2543 /* ======================== TemplateValueParameter ========================== */ | |
| 2544 | |
| 2545 // value-parameter | |
| 2546 | |
| 2547 Expression *TemplateValueParameter::edummy = NULL; | |
| 2548 | |
| 2549 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2550 Expression *specValue, Expression *defaultValue) | |
| 2551 : TemplateParameter(loc, ident) | |
| 2552 { | |
| 2553 this->ident = ident; | |
| 2554 this->valType = valType; | |
| 2555 this->specValue = specValue; | |
| 2556 this->defaultValue = defaultValue; | |
| 2557 } | |
| 2558 | |
| 2559 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2560 { | |
| 2561 return this; | |
| 2562 } | |
| 2563 | |
| 2564 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2565 { | |
| 2566 TemplateValueParameter *tp = | |
| 2567 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2568 tp->valType = valType->syntaxCopy(); | |
| 2569 if (specValue) | |
| 2570 tp->specValue = specValue->syntaxCopy(); | |
| 2571 if (defaultValue) | |
| 2572 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2573 return tp; | |
| 2574 } | |
| 2575 | |
| 2576 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2577 { | |
| 2578 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2579 v->storage_class = STCtemplateparameter; | |
| 2580 if (!sc->insert(v)) | |
| 2581 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2582 sparam = v; | |
| 2583 } | |
| 2584 | |
| 2585 void TemplateValueParameter::semantic(Scope *sc) | |
| 2586 { | |
| 2587 sparam->semantic(sc); | |
| 2588 valType = valType->semantic(loc, sc); | |
| 2589 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2590 valType->ty != Tident) | |
| 2591 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2592 | |
| 2593 if (specValue) | |
| 2594 { Expression *e = specValue; | |
| 2595 | |
| 2596 e = e->semantic(sc); | |
| 2597 e = e->implicitCastTo(sc, valType); | |
| 2598 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2599 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2600 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2601 specValue = e; | |
| 2602 //e->toInteger(); | |
| 2603 } | |
| 2604 | |
| 2605 #if 0 // defer semantic analysis to arg match | |
| 2606 if (defaultValue) | |
| 2607 { Expression *e = defaultValue; | |
| 2608 | |
| 2609 e = e->semantic(sc); | |
| 2610 e = e->implicitCastTo(sc, valType); | |
| 2611 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2612 if (e->op == TOKint64) | |
| 2613 defaultValue = e; | |
| 2614 //e->toInteger(); | |
| 2615 } | |
| 2616 #endif | |
| 2617 } | |
| 2618 | |
| 2619 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2620 { | |
| 2621 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2622 | |
| 2623 if (tvp) | |
| 2624 { | |
| 2625 if (valType != tvp->valType) | |
| 2626 goto Lnomatch; | |
| 2627 | |
| 2628 if (valType && !valType->equals(tvp->valType)) | |
| 2629 goto Lnomatch; | |
| 2630 | |
| 2631 if (specValue != tvp->specValue) | |
| 2632 goto Lnomatch; | |
| 2633 | |
| 2634 return 1; // match | |
| 2635 } | |
| 2636 | |
| 2637 Lnomatch: | |
| 2638 return 0; | |
| 2639 } | |
| 2640 | |
| 2641 | |
| 2642 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2643 Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2644 Declaration **psparam, int flags) |
| 336 | 2645 { |
| 2646 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2647 | |
| 2648 Initializer *init; | |
| 2649 Declaration *sparam; | |
| 2650 MATCH m = MATCHexact; | |
| 2651 Expression *ei; | |
| 2652 Object *oarg; | |
| 2653 | |
| 2654 if (i < tiargs->dim) | |
| 2655 oarg = (Object *)tiargs->data[i]; | |
| 2656 else | |
| 2657 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2658 oarg = defaultArg(loc, sc); |
| 336 | 2659 if (!oarg) |
| 2660 { assert(i < dedtypes->dim); | |
| 2661 // It might have already been deduced | |
| 2662 oarg = (Object *)dedtypes->data[i]; | |
| 2663 if (!oarg) | |
| 2664 goto Lnomatch; | |
| 2665 } | |
| 2666 } | |
| 2667 | |
| 2668 ei = isExpression(oarg); | |
| 2669 Type *vt; | |
| 2670 | |
| 2671 if (!ei && oarg) | |
| 2672 goto Lnomatch; | |
| 2673 | |
| 2674 if (specValue) | |
| 2675 { | |
| 2676 if (!ei || ei == edummy) | |
| 2677 goto Lnomatch; | |
| 2678 | |
| 2679 Expression *e = specValue; | |
| 2680 | |
| 2681 e = e->semantic(sc); | |
| 2682 e = e->implicitCastTo(sc, valType); | |
| 2683 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2684 | |
| 2685 ei = ei->syntaxCopy(); | |
| 2686 ei = ei->semantic(sc); | |
| 2687 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2688 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2689 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2690 if (!ei->equals(e)) | |
| 2691 goto Lnomatch; | |
| 2692 } | |
| 2693 else if (dedtypes->data[i]) | |
| 2694 { // Must match already deduced value | |
| 2695 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2696 | |
| 2697 if (!ei || !ei->equals(e)) | |
| 2698 goto Lnomatch; | |
| 2699 } | |
| 2700 Lmatch: | |
| 2701 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2702 vt = valType->semantic(0, sc); | |
| 2703 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2704 if (ei->type) | |
| 2705 { | |
| 2706 m = (MATCH)ei->implicitConvTo(vt); | |
| 2707 //printf("m: %d\n", m); | |
| 2708 if (!m) | |
| 2709 goto Lnomatch; | |
| 2710 } | |
| 2711 dedtypes->data[i] = ei; | |
| 2712 | |
| 2713 init = new ExpInitializer(loc, ei); | |
| 2714 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2715 sparam->storage_class = STCconst; | |
| 2716 *psparam = sparam; | |
| 2717 return m; | |
| 2718 | |
| 2719 Lnomatch: | |
| 2720 //printf("\tno match\n"); | |
| 2721 *psparam = NULL; | |
| 2722 return MATCHnomatch; | |
| 2723 } | |
| 2724 | |
| 2725 | |
| 2726 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2727 { | |
| 2728 printf(" %s\n", ident->toChars()); | |
| 2729 | |
| 2730 Expression *ea = isExpression(oded); | |
| 2731 | |
| 2732 if (specValue) | |
| 2733 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2734 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2735 } | |
| 2736 | |
| 2737 | |
| 2738 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2739 { | |
| 2740 valType->toCBuffer(buf, ident, hgs); | |
| 2741 if (specValue) | |
| 2742 { | |
| 2743 buf->writestring(" : "); | |
| 2744 specValue->toCBuffer(buf, hgs); | |
| 2745 } | |
| 2746 if (defaultValue) | |
| 2747 { | |
| 2748 buf->writestring(" = "); | |
| 2749 defaultValue->toCBuffer(buf, hgs); | |
| 2750 } | |
| 2751 } | |
| 2752 | |
| 2753 | |
| 2754 void *TemplateValueParameter::dummyArg() | |
| 2755 { Expression *e; | |
| 2756 | |
| 2757 e = specValue; | |
| 2758 if (!e) | |
| 2759 { | |
| 2760 // Create a dummy value | |
| 2761 if (!edummy) | |
| 2762 edummy = valType->defaultInit(); | |
| 2763 e = edummy; | |
| 2764 } | |
| 2765 return (void *)e; | |
| 2766 } | |
| 2767 | |
| 2768 | |
| 2769 Object *TemplateValueParameter::specialization() | |
| 2770 { | |
| 2771 return specValue; | |
| 2772 } | |
| 2773 | |
| 2774 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2775 Object *TemplateValueParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2776 { |
| 2777 Expression *e = defaultValue; | |
| 2778 if (e) | |
| 2779 { | |
| 2780 e = e->syntaxCopy(); | |
| 2781 e = e->semantic(sc); | |
| 2782 #if DMDV2 | |
| 2783 if (e->op == TOKdefault) | |
| 2784 { DefaultInitExp *de = (DefaultInitExp *)e; | |
| 2785 e = de->resolve(loc, sc); | |
| 2786 } | |
| 2787 #endif | |
| 2788 } | |
| 2789 return e; | |
| 2790 } | |
| 2791 | |
| 2792 /* ======================== TemplateTupleParameter ========================== */ | |
| 2793 | |
| 2794 // variadic-parameter | |
| 2795 | |
| 2796 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2797 : TemplateParameter(loc, ident) | |
| 2798 { | |
| 2799 this->ident = ident; | |
| 2800 } | |
| 2801 | |
| 2802 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2803 { | |
| 2804 return this; | |
| 2805 } | |
| 2806 | |
| 2807 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2808 { | |
| 2809 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2810 return tp; | |
| 2811 } | |
| 2812 | |
| 2813 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2814 { | |
| 2815 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2816 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2817 if (!sc->insert(sparam)) | |
| 2818 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2819 } | |
| 2820 | |
| 2821 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2822 { | |
| 2823 } | |
| 2824 | |
| 2825 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2826 { | |
| 2827 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2828 | |
| 2829 if (tvp) | |
| 2830 { | |
| 2831 return 1; // match | |
| 2832 } | |
| 2833 | |
| 2834 Lnomatch: | |
| 2835 return 0; | |
| 2836 } | |
| 2837 | |
| 2838 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2839 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2840 Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2841 Declaration **psparam, int flags) |
| 336 | 2842 { |
| 2843 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2844 | |
| 2845 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2846 * for the variadic parameter. | |
| 2847 */ | |
| 2848 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2849 Tuple *ovar; | |
| 2850 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2851 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2852 else | |
| 2853 { | |
| 2854 ovar = new Tuple(); | |
| 2855 //printf("ovar = %p\n", ovar); | |
| 2856 if (i < tiargs->dim) | |
| 2857 { | |
| 2858 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2859 ovar->objects.setDim(tiargs->dim - i); | |
| 2860 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2861 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2862 } | |
| 2863 } | |
| 2864 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2865 dedtypes->data[i] = (void *)ovar; | |
| 2866 return MATCHexact; | |
| 2867 } | |
| 2868 | |
| 2869 | |
| 2870 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2871 { | |
| 2872 printf(" %s... [", ident->toChars()); | |
| 2873 Tuple *v = isTuple(oded); | |
| 2874 assert(v); | |
| 2875 | |
| 2876 //printf("|%d| ", v->objects.dim); | |
| 2877 for (int i = 0; i < v->objects.dim; i++) | |
| 2878 { | |
| 2879 if (i) | |
| 2880 printf(", "); | |
| 2881 | |
| 2882 Object *o = (Object *)v->objects.data[i]; | |
| 2883 | |
| 2884 Dsymbol *sa = isDsymbol(o); | |
| 2885 if (sa) | |
| 2886 printf("alias: %s", sa->toChars()); | |
| 2887 | |
| 2888 Type *ta = isType(o); | |
| 2889 if (ta) | |
| 2890 printf("type: %s", ta->toChars()); | |
| 2891 | |
| 2892 Expression *ea = isExpression(o); | |
| 2893 if (ea) | |
| 2894 printf("exp: %s", ea->toChars()); | |
| 2895 | |
| 2896 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2897 } | |
| 2898 | |
| 2899 printf("]\n"); | |
| 2900 } | |
| 2901 | |
| 2902 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2903 { | |
| 2904 buf->writestring(ident->toChars()); | |
| 2905 buf->writestring("..."); | |
| 2906 } | |
| 2907 | |
| 2908 | |
| 2909 void *TemplateTupleParameter::dummyArg() | |
| 2910 { | |
| 2911 return NULL; | |
| 2912 } | |
| 2913 | |
| 2914 | |
| 2915 Object *TemplateTupleParameter::specialization() | |
| 2916 { | |
| 2917 return NULL; | |
| 2918 } | |
| 2919 | |
| 2920 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2921 Object *TemplateTupleParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2922 { |
| 2923 return NULL; | |
| 2924 } | |
| 2925 | |
| 2926 /* ======================== TemplateInstance ================================ */ | |
| 2927 | |
| 2928 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2929 : ScopeDsymbol(NULL) | |
| 2930 { | |
| 2931 #if LOG | |
| 2932 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2933 #endif | |
| 2934 this->loc = loc; | |
| 2935 this->name = ident; | |
| 2936 this->tiargs = NULL; | |
| 2937 this->tempdecl = NULL; | |
| 2938 this->inst = NULL; | |
| 2939 this->argsym = NULL; | |
| 2940 this->aliasdecl = NULL; | |
| 2941 this->semanticdone = 0; | |
| 2942 this->semantictiargsdone = 0; | |
| 2943 this->withsym = NULL; | |
| 2944 this->nest = 0; | |
| 2945 this->havetempdecl = 0; | |
| 2946 this->isnested = NULL; | |
| 2947 this->errors = 0; | |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2948 |
|
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2949 // LDC |
|
1067
7ce8355fbcc6
Improved template emission control for singleobj building.
Christian Kamm <kamm incasoftware de>
parents:
948
diff
changeset
|
2950 this->emittedInModule = NULL; |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2951 this->tinst = NULL; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2952 this->tmodule = NULL; |
| 336 | 2953 } |
| 2954 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2955 /***************** |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2956 * This constructor is only called when we figured out which function |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2957 * template to instantiate. |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2958 */ |
| 336 | 2959 |
| 2960 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2961 : ScopeDsymbol(NULL) | |
| 2962 { | |
| 2963 #if LOG | |
| 2964 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2965 #endif | |
| 2966 this->loc = loc; | |
| 2967 this->name = td->ident; | |
| 2968 this->tiargs = tiargs; | |
| 2969 this->tempdecl = td; | |
| 2970 this->inst = NULL; | |
| 2971 this->argsym = NULL; | |
| 2972 this->aliasdecl = NULL; | |
| 2973 this->semanticdone = 0; | |
| 2974 this->semantictiargsdone = 1; | |
| 2975 this->withsym = NULL; | |
| 2976 this->nest = 0; | |
| 2977 this->havetempdecl = 1; | |
| 2978 this->isnested = NULL; | |
| 2979 this->errors = 0; | |
|
940
39519a1ff603
Changed the way LDC determines if a template instantiation needs to get a definition, seems to speed up compile times quite a bit in some cases.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
876
diff
changeset
|
2980 |
|
39519a1ff603
Changed the way LDC determines if a template instantiation needs to get a definition, seems to speed up compile times quite a bit in some cases.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
876
diff
changeset
|
2981 // LDC |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2982 this->tinst = NULL; |
|
940
39519a1ff603
Changed the way LDC determines if a template instantiation needs to get a definition, seems to speed up compile times quite a bit in some cases.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
876
diff
changeset
|
2983 this->tmodule = NULL; |
| 336 | 2984 |
| 2985 assert((size_t)tempdecl->scope > 0x10000); | |
| 2986 } | |
| 2987 | |
| 2988 | |
| 2989 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 2990 { | |
| 2991 Objects *a = NULL; | |
| 2992 if (objs) | |
| 2993 { a = new Objects(); | |
| 2994 a->setDim(objs->dim); | |
| 2995 for (size_t i = 0; i < objs->dim; i++) | |
| 2996 { | |
| 2997 Type *ta = isType((Object *)objs->data[i]); | |
| 2998 if (ta) | |
| 2999 a->data[i] = ta->syntaxCopy(); | |
| 3000 else | |
| 3001 { | |
| 3002 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 3003 assert(ea); | |
| 3004 a->data[i] = ea->syntaxCopy(); | |
| 3005 } | |
| 3006 } | |
| 3007 } | |
| 3008 return a; | |
| 3009 } | |
| 3010 | |
| 3011 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 3012 { | |
| 3013 TemplateInstance *ti; | |
| 3014 | |
| 3015 if (s) | |
| 3016 ti = (TemplateInstance *)s; | |
| 3017 else | |
| 3018 ti = new TemplateInstance(loc, name); | |
| 3019 | |
| 3020 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 3021 | |
| 3022 ScopeDsymbol::syntaxCopy(ti); | |
| 3023 return ti; | |
| 3024 } | |
| 3025 | |
| 3026 | |
| 3027 void TemplateInstance::semantic(Scope *sc) | |
| 3028 { | |
| 3029 if (global.errors) | |
| 3030 { | |
| 3031 if (!global.gag) | |
| 3032 { | |
| 3033 /* Trying to soldier on rarely generates useful messages | |
| 3034 * at this point. | |
| 3035 */ | |
| 3036 fatal(); | |
| 3037 } | |
| 3038 return; | |
| 3039 } | |
| 3040 #if LOG | |
| 3041 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3042 #endif | |
| 3043 if (inst) // if semantic() was already run | |
| 3044 { | |
| 3045 #if LOG | |
| 3046 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 3047 #endif | |
| 3048 return; | |
| 3049 } | |
| 3050 | |
| 3051 if (semanticdone != 0) | |
| 3052 { | |
| 3053 error(loc, "recursive template expansion"); | |
| 3054 // inst = this; | |
| 3055 return; | |
| 3056 } | |
| 3057 semanticdone = 1; | |
| 3058 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3059 // get the enclosing template instance from the scope tinst |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3060 tinst = sc->tinst; |
|
946
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3061 |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3062 // get the module of the outermost enclosing instantiation |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3063 if (tinst) |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3064 tmodule = tinst->tmodule; |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3065 else |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3066 tmodule = sc->module; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
3067 //printf("%s in %s\n", toChars(), tmodule->toChars()); |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3068 |
| 336 | 3069 #if LOG |
| 3070 printf("\tdo semantic\n"); | |
| 3071 #endif | |
| 3072 if (havetempdecl) | |
| 3073 { | |
| 3074 assert((size_t)tempdecl->scope > 0x10000); | |
| 3075 // Deduce tdtypes | |
| 3076 tdtypes.setDim(tempdecl->parameters->dim); | |
| 3077 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 3078 { | |
| 3079 error("incompatible arguments for template instantiation"); | |
| 3080 inst = this; | |
| 3081 return; | |
| 3082 } | |
| 3083 } | |
| 3084 else | |
| 3085 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3086 /* Run semantic on each argument, place results in tiargs[] |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3087 * (if we havetempdecl, then tiargs is already evaluated) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3088 */ |
| 336 | 3089 semanticTiargs(sc); |
| 3090 | |
| 3091 tempdecl = findTemplateDeclaration(sc); | |
| 3092 if (tempdecl) | |
| 3093 tempdecl = findBestMatch(sc); | |
| 3094 if (!tempdecl || global.errors) | |
| 3095 { inst = this; | |
| 3096 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 3097 return; // error recovery | |
| 3098 } | |
| 3099 } | |
| 3100 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3101 hasNestedArgs(tiargs); |
| 336 | 3102 |
| 3103 /* See if there is an existing TemplateInstantiation that already | |
| 3104 * implements the typeargs. If so, just refer to that one instead. | |
| 3105 */ | |
| 3106 | |
| 3107 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 3108 { | |
| 3109 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 3110 #if LOG | |
| 3111 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 3112 #endif | |
| 3113 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 3114 | |
| 3115 // Nesting must match | |
| 3116 if (isnested != ti->isnested) | |
| 3117 continue; | |
| 3118 #if 0 | |
| 3119 if (isnested && sc->parent != ti->parent) | |
| 3120 continue; | |
| 3121 #endif | |
| 3122 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 3123 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 3124 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 3125 if (!match(o1, o2, tempdecl, sc)) | |
| 3126 goto L1; | |
| 3127 } | |
| 3128 | |
| 3129 // It's a match | |
| 3130 inst = ti; | |
| 3131 parent = ti->parent; | |
| 3132 #if LOG | |
| 3133 printf("\tit's a match with instance %p\n", inst); | |
| 3134 #endif | |
| 3135 return; | |
| 3136 | |
| 3137 L1: | |
| 3138 ; | |
| 3139 } | |
| 3140 | |
| 3141 /* So, we need to implement 'this' instance. | |
| 3142 */ | |
| 3143 #if LOG | |
| 3144 printf("\timplement template instance '%s'\n", toChars()); | |
| 3145 #endif | |
| 3146 unsigned errorsave = global.errors; | |
| 3147 inst = this; | |
| 3148 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 3149 tempdecl->instances.push(this); | |
| 3150 parent = tempdecl->parent; | |
| 3151 //printf("parent = '%s'\n", parent->kind()); | |
| 3152 | |
| 3153 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 3154 | |
| 3155 #if 1 | |
| 3156 if (isnested) | |
| 3157 parent = isnested; | |
| 3158 #endif | |
| 3159 //printf("parent = '%s'\n", parent->kind()); | |
| 3160 | |
| 3161 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 3162 // will get called on the instance members | |
| 3163 #if 1 | |
| 3164 int dosemantic3 = 0; | |
| 3165 { Array *a; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3166 |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3167 Scope *scx = sc; |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3168 #if 0 |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3169 for (scx = sc; scx; scx = scx->enclosing) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3170 if (scx->scopesym) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3171 break; |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
3172 #endif |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3173 |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3174 //if (scx && scx->scopesym) printf("3: scx is %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
3175 if (scx && scx->scopesym && |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3176 scx->scopesym->members && !scx->scopesym->isTemplateMixin() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3177 #if 1 // removed because it bloated compile times |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3178 /* The problem is if A imports B, and B imports A, and both A |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3179 * and B instantiate the same template, does the compilation of A |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3180 * or the compilation of B do the actual instantiation? |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3181 * |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3182 * see bugzilla 2500. |
|
875
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
3183 */ |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3184 && !scx->module->selfImports() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3185 #endif |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3186 ) |
| 336 | 3187 { |
|
875
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
3188 //printf("\t1: adding to %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3189 a = scx->scopesym->members; |
| 336 | 3190 } |
| 3191 else | |
| 3192 { Module *m = sc->module->importedFrom; | |
| 3193 //printf("\t2: adding to module %s instead of module %s\n", m->toChars(), sc->module->toChars()); | |
| 3194 a = m->members; | |
| 3195 if (m->semanticdone >= 3) | |
| 3196 dosemantic3 = 1; | |
| 3197 } | |
| 3198 for (int i = 0; 1; i++) | |
| 3199 { | |
| 3200 if (i == a->dim) | |
| 3201 { | |
| 3202 a->push(this); | |
| 3203 break; | |
| 3204 } | |
| 3205 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 3206 break; | |
| 3207 } | |
| 3208 } | |
| 3209 #endif | |
| 3210 | |
| 3211 // Copy the syntax trees from the TemplateDeclaration | |
| 3212 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3213 | |
| 3214 // Create our own scope for the template parameters | |
| 3215 Scope *scope = tempdecl->scope; | |
| 3216 if (!scope) | |
| 3217 { | |
| 3218 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 3219 return; | |
| 3220 } | |
| 3221 | |
| 3222 #if LOG | |
| 3223 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3224 #endif | |
| 3225 argsym = new ScopeDsymbol(); | |
| 3226 argsym->parent = scope->parent; | |
| 3227 scope = scope->push(argsym); | |
| 3228 | |
| 3229 // Declare each template parameter as an alias for the argument type | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3230 Scope *paramscope = scope->push(); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3231 paramscope->stc = 0; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3232 declareParameters(paramscope); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3233 paramscope->pop(); |
| 336 | 3234 |
| 3235 // Add members of template instance to template instance symbol table | |
| 3236 // parent = scope->scopesym; | |
| 3237 symtab = new DsymbolTable(); | |
| 3238 int memnum = 0; | |
| 3239 for (int i = 0; i < members->dim; i++) | |
| 3240 { | |
| 3241 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3242 #if LOG | |
| 3243 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 3244 #endif | |
| 3245 memnum |= s->addMember(scope, this, memnum); | |
| 3246 } | |
| 3247 #if LOG | |
| 3248 printf("adding members done\n"); | |
| 3249 #endif | |
| 3250 | |
| 3251 /* See if there is only one member of template instance, and that | |
| 3252 * member has the same name as the template instance. | |
| 3253 * If so, this template instance becomes an alias for that member. | |
| 3254 */ | |
| 3255 //printf("members->dim = %d\n", members->dim); | |
| 3256 if (members->dim) | |
| 3257 { | |
| 3258 Dsymbol *s; | |
| 3259 if (Dsymbol::oneMembers(members, &s) && s) | |
| 3260 { | |
| 3261 //printf("s->kind = '%s'\n", s->kind()); | |
| 3262 //s->print(); | |
| 3263 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 3264 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 3265 { | |
| 3266 //printf("setting aliasdecl\n"); | |
| 3267 aliasdecl = new AliasDeclaration(loc, s->ident, s); | |
|
1089
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3268 |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3269 // LDC propagate internal information |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3270 if (tempdecl->llvmInternal) { |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3271 s->llvmInternal = tempdecl->llvmInternal; |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3272 if (FuncDeclaration* fd = s->isFuncDeclaration()) { |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3273 fd->intrinsicName = tempdecl->intrinsicName; |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3274 } |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3275 } |
| 336 | 3276 } |
| 3277 } | |
| 3278 } | |
| 3279 | |
| 3280 // Do semantic() analysis on template instance members | |
| 3281 #if LOG | |
| 3282 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3283 #endif | |
| 3284 Scope *sc2; | |
| 3285 sc2 = scope->push(this); | |
| 3286 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 3287 sc2->parent = /*isnested ? sc->parent :*/ this; | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3288 sc2->tinst = this; |
| 336 | 3289 |
| 3290 #if !IN_LLVM | |
| 3291 #if _WIN32 | |
| 3292 __try | |
| 3293 { | |
| 3294 #endif | |
| 3295 #endif | |
| 3296 for (int i = 0; i < members->dim; i++) | |
| 3297 { | |
| 3298 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3299 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 3300 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 3301 // if (isnested) | |
| 3302 // s->parent = sc->parent; | |
| 3303 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3304 s->semantic(sc2); | |
| 3305 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3306 sc2->module->runDeferredSemantic(); | |
| 3307 } | |
| 3308 #if !IN_LLVM | |
| 3309 #if _WIN32 | |
| 3310 } | |
| 3311 __except (__ehfilter(GetExceptionInformation())) | |
| 3312 { | |
| 3313 global.gag = 0; // ensure error message gets printed | |
| 3314 error("recursive expansion"); | |
| 3315 fatal(); | |
| 3316 } | |
| 3317 #endif | |
| 3318 #endif | |
| 3319 | |
| 3320 /* If any of the instantiation members didn't get semantic() run | |
| 3321 * on them due to forward references, we cannot run semantic2() | |
| 3322 * or semantic3() yet. | |
| 3323 */ | |
| 3324 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 3325 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 3326 | |
| 3327 if (sd->parent == this) | |
| 3328 goto Laftersemantic; | |
| 3329 } | |
| 3330 | |
| 3331 /* The problem is when to parse the initializer for a variable. | |
| 3332 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3333 * for initializers inside a function. | |
| 3334 */ | |
| 3335 // if (sc->parent->isFuncDeclaration()) | |
| 3336 | |
| 3337 /* BUG 782: this has problems if the classes this depends on | |
| 3338 * are forward referenced. Find a way to defer semantic() | |
| 3339 * on this template. | |
| 3340 */ | |
| 3341 semantic2(sc2); | |
| 3342 | |
| 3343 if (sc->func || dosemantic3) | |
| 3344 { | |
| 3345 semantic3(sc2); | |
| 3346 } | |
| 3347 | |
| 3348 Laftersemantic: | |
| 3349 sc2->pop(); | |
| 3350 | |
| 3351 scope->pop(); | |
| 3352 | |
| 3353 // Give additional context info if error occurred during instantiation | |
| 3354 if (global.errors != errorsave) | |
| 3355 { | |
| 3356 error("error instantiating"); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3357 if(tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3358 tinst->printInstantiationTrace(); |
| 336 | 3359 errors = 1; |
| 3360 if (global.gag) | |
| 3361 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 3362 } | |
| 3363 | |
| 3364 #if LOG | |
| 3365 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3366 #endif | |
| 3367 } | |
| 3368 | |
| 3369 | |
| 3370 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 3371 { | |
| 3372 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3373 if (semantictiargsdone) | |
| 3374 return; | |
| 3375 semantictiargsdone = 1; | |
| 3376 semanticTiargs(loc, sc, tiargs); | |
| 3377 } | |
| 3378 | |
| 3379 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 3380 { | |
| 3381 // Run semantic on each argument, place results in tiargs[] | |
| 3382 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3383 if (!tiargs) | |
| 3384 return; | |
| 3385 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3386 { | |
| 3387 Object *o = (Object *)tiargs->data[j]; | |
| 3388 Type *ta = isType(o); | |
| 3389 Expression *ea = isExpression(o); | |
| 3390 Dsymbol *sa = isDsymbol(o); | |
| 3391 | |
| 3392 //printf("1: tiargs->data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 3393 if (ta) | |
| 3394 { | |
| 3395 //printf("type %s\n", ta->toChars()); | |
| 3396 // It might really be an Expression or an Alias | |
| 3397 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 3398 if (ea) | |
| 3399 { | |
| 3400 ea = ea->semantic(sc); | |
| 3401 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3402 tiargs->data[j] = ea; | |
| 3403 } | |
| 3404 else if (sa) | |
| 3405 { tiargs->data[j] = sa; | |
| 3406 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 3407 if (d) | |
| 3408 { | |
| 3409 size_t dim = d->objects->dim; | |
| 3410 tiargs->remove(j); | |
| 3411 tiargs->insert(j, d->objects); | |
| 3412 j--; | |
| 3413 } | |
| 3414 } | |
| 3415 else if (ta) | |
| 3416 { | |
| 3417 if (ta->ty == Ttuple) | |
| 3418 { // Expand tuple | |
| 3419 TypeTuple *tt = (TypeTuple *)ta; | |
| 3420 size_t dim = tt->arguments->dim; | |
| 3421 tiargs->remove(j); | |
| 3422 if (dim) | |
| 3423 { tiargs->reserve(dim); | |
| 3424 for (size_t i = 0; i < dim; i++) | |
| 3425 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 3426 tiargs->insert(j + i, arg->type); | |
| 3427 } | |
| 3428 } | |
| 3429 j--; | |
| 3430 } | |
| 3431 else | |
| 3432 tiargs->data[j] = ta; | |
| 3433 } | |
| 3434 else | |
| 3435 { | |
| 3436 assert(global.errors); | |
| 3437 tiargs->data[j] = Type::terror; | |
| 3438 } | |
| 3439 } | |
| 3440 else if (ea) | |
| 3441 { | |
| 3442 if (!ea) | |
| 3443 { assert(global.errors); | |
| 3444 ea = new IntegerExp(0); | |
| 3445 } | |
| 3446 assert(ea); | |
| 3447 ea = ea->semantic(sc); | |
| 3448 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3449 tiargs->data[j] = ea; | |
| 3450 if (ea->op == TOKtype) | |
| 3451 tiargs->data[j] = ea->type; | |
| 3452 } | |
| 3453 else if (sa) | |
| 3454 { | |
| 3455 } | |
| 3456 else | |
| 3457 { | |
| 3458 assert(0); | |
| 3459 } | |
| 3460 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3461 } | |
| 3462 #if 0 | |
| 3463 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3464 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3465 { | |
| 3466 Object *o = (Object *)tiargs->data[j]; | |
| 3467 Type *ta = isType(o); | |
| 3468 Expression *ea = isExpression(o); | |
| 3469 Dsymbol *sa = isDsymbol(o); | |
| 3470 Tuple *va = isTuple(o); | |
| 3471 | |
| 3472 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3473 } | |
| 3474 #endif | |
| 3475 } | |
| 3476 | |
| 3477 /********************************************** | |
| 3478 * Find template declaration corresponding to template instance. | |
| 3479 */ | |
| 3480 | |
| 3481 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3482 { | |
| 3483 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3484 if (!tempdecl) | |
| 3485 { | |
| 3486 /* Given: | |
| 3487 * foo!( ... ) | |
| 3488 * figure out which TemplateDeclaration foo refers to. | |
| 3489 */ | |
| 3490 Dsymbol *s; | |
| 3491 Dsymbol *scopesym; | |
| 3492 Identifier *id; | |
| 3493 int i; | |
| 3494 | |
| 3495 id = name; | |
| 3496 s = sc->search(loc, id, &scopesym); | |
| 3497 if (!s) | |
| 3498 { error("identifier '%s' is not defined", id->toChars()); | |
| 3499 return NULL; | |
| 3500 } | |
| 3501 #if LOG | |
| 3502 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 3503 if (s->parent) | |
| 3504 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 3505 #endif | |
| 3506 withsym = scopesym->isWithScopeSymbol(); | |
| 3507 | |
| 3508 /* We might have found an alias within a template when | |
| 3509 * we really want the template. | |
| 3510 */ | |
| 3511 TemplateInstance *ti; | |
| 3512 if (s->parent && | |
| 3513 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3514 { | |
| 3515 if ( | |
| 3516 (ti->name == id || | |
| 3517 ti->toAlias()->ident == id) | |
| 3518 && | |
| 3519 ti->tempdecl) | |
| 3520 { | |
| 3521 /* This is so that one can refer to the enclosing | |
| 3522 * template, even if it has the same name as a member | |
| 3523 * of the template, if it has a !(arguments) | |
| 3524 */ | |
| 3525 tempdecl = ti->tempdecl; | |
| 3526 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3527 tempdecl = tempdecl->overroot; // then get the start | |
| 3528 s = tempdecl; | |
| 3529 } | |
| 3530 } | |
| 3531 | |
| 3532 s = s->toAlias(); | |
| 3533 | |
| 3534 /* It should be a TemplateDeclaration, not some other symbol | |
| 3535 */ | |
| 3536 tempdecl = s->isTemplateDeclaration(); | |
| 3537 if (!tempdecl) | |
| 3538 { | |
| 3539 if (!s->parent && global.errors) | |
| 3540 return NULL; | |
| 3541 if (!s->parent && s->getType()) | |
| 3542 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3543 if (!s2) | |
| 3544 { | |
| 3545 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3546 return NULL; | |
| 3547 } | |
| 3548 s = s2; | |
| 3549 } | |
| 3550 #ifdef DEBUG | |
| 3551 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3552 #endif | |
| 3553 //assert(s->parent); | |
| 3554 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3555 if (ti && | |
| 3556 (ti->name == id || | |
| 3557 ti->toAlias()->ident == id) | |
| 3558 && | |
| 3559 ti->tempdecl) | |
| 3560 { | |
| 3561 /* This is so that one can refer to the enclosing | |
| 3562 * template, even if it has the same name as a member | |
| 3563 * of the template, if it has a !(arguments) | |
| 3564 */ | |
| 3565 tempdecl = ti->tempdecl; | |
| 3566 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3567 tempdecl = tempdecl->overroot; // then get the start | |
| 3568 } | |
| 3569 else | |
| 3570 { | |
| 3571 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3572 return NULL; | |
| 3573 } | |
| 3574 } | |
| 3575 } | |
| 3576 else | |
| 3577 assert(tempdecl->isTemplateDeclaration()); | |
| 3578 return tempdecl; | |
| 3579 } | |
| 3580 | |
| 3581 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3582 { | |
| 3583 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3584 * name, look for the best match. | |
| 3585 */ | |
| 3586 TemplateDeclaration *td_ambig = NULL; | |
| 3587 TemplateDeclaration *td_best = NULL; | |
| 3588 MATCH m_best = MATCHnomatch; | |
| 3589 Objects dedtypes; | |
| 3590 | |
| 3591 #if LOG | |
| 3592 printf("TemplateInstance::findBestMatch()\n"); | |
| 3593 #endif | |
| 3594 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3595 { | |
| 3596 MATCH m; | |
| 3597 | |
| 3598 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3599 | |
| 3600 // If more arguments than parameters, | |
| 3601 // then this is no match. | |
| 3602 if (td->parameters->dim < tiargs->dim) | |
| 3603 { | |
| 3604 if (!td->isVariadic()) | |
| 3605 continue; | |
| 3606 } | |
| 3607 | |
| 3608 dedtypes.setDim(td->parameters->dim); | |
| 3609 dedtypes.zero(); | |
| 3610 if (!td->scope) | |
| 3611 { | |
| 3612 error("forward reference to template declaration %s", td->toChars()); | |
| 3613 return NULL; | |
| 3614 } | |
| 3615 m = td->matchWithInstance(this, &dedtypes, 0); | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3616 //printf("matchWithInstance = %d\n", m); |
| 336 | 3617 if (!m) // no match at all |
| 3618 continue; | |
| 3619 | |
| 3620 if (m < m_best) | |
| 3621 goto Ltd_best; | |
| 3622 if (m > m_best) | |
| 3623 goto Ltd; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3624 |
| 336 | 3625 { |
| 3626 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3627 int c1 = td->leastAsSpecialized(td_best); | |
| 3628 int c2 = td_best->leastAsSpecialized(td); | |
| 3629 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3630 | |
| 3631 if (c1 > c2) | |
| 3632 goto Ltd; | |
| 3633 else if (c1 < c2) | |
| 3634 goto Ltd_best; | |
| 3635 else | |
| 3636 goto Lambig; | |
| 3637 } | |
| 3638 | |
| 3639 Lambig: // td_best and td are ambiguous | |
| 3640 td_ambig = td; | |
| 3641 continue; | |
| 3642 | |
| 3643 Ltd_best: // td_best is the best match so far | |
| 3644 td_ambig = NULL; | |
| 3645 continue; | |
| 3646 | |
| 3647 Ltd: // td is the new best match | |
| 3648 td_ambig = NULL; | |
| 3649 td_best = td; | |
| 3650 m_best = m; | |
| 3651 tdtypes.setDim(dedtypes.dim); | |
| 3652 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3653 continue; | |
| 3654 } | |
| 3655 | |
| 3656 if (!td_best) | |
| 3657 { | |
| 3658 error("%s does not match any template declaration", toChars()); | |
| 3659 return NULL; | |
| 3660 } | |
| 3661 if (td_ambig) | |
| 3662 { | |
| 3663 error("%s matches more than one template declaration, %s and %s", | |
| 3664 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3665 } | |
| 3666 | |
| 3667 /* The best match is td_best | |
| 3668 */ | |
| 3669 tempdecl = td_best; | |
| 3670 | |
| 3671 #if 0 | |
| 3672 /* Cast any value arguments to be same type as value parameter | |
| 3673 */ | |
| 3674 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3675 { Object *o = (Object *)tiargs->data[i]; | |
| 3676 Expression *ea = isExpression(o); // value argument | |
| 3677 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3678 assert(tp); | |
| 3679 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3680 if (tvp) | |
| 3681 { | |
| 3682 assert(ea); | |
| 3683 ea = ea->castTo(tvp->valType); | |
| 3684 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3685 tiargs->data[i] = (Object *)ea; | |
| 3686 } | |
| 3687 } | |
| 3688 #endif | |
| 3689 | |
| 3690 #if LOG | |
| 3691 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3692 #endif | |
| 3693 return tempdecl; | |
| 3694 } | |
| 3695 | |
| 3696 | |
| 3697 /***************************************** | |
| 3698 * Determines if a TemplateInstance will need a nested | |
| 3699 * generation of the TemplateDeclaration. | |
| 3700 */ | |
| 3701 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3702 int TemplateInstance::hasNestedArgs(Objects *args) |
| 336 | 3703 { int nested = 0; |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3704 //printf("TemplateInstance::hasNestedArgs('%s')\n", tempdecl->ident->toChars()); |
| 336 | 3705 |
| 3706 /* A nested instance happens when an argument references a local | |
| 3707 * symbol that is on the stack. | |
| 3708 */ | |
| 3709 for (size_t i = 0; i < args->dim; i++) | |
| 3710 { Object *o = (Object *)args->data[i]; | |
| 3711 Expression *ea = isExpression(o); | |
| 3712 Dsymbol *sa = isDsymbol(o); | |
| 3713 Tuple *va = isTuple(o); | |
| 3714 if (ea) | |
| 3715 { | |
| 3716 if (ea->op == TOKvar) | |
| 3717 { | |
| 3718 sa = ((VarExp *)ea)->var; | |
| 3719 goto Lsa; | |
| 3720 } | |
| 3721 if (ea->op == TOKfunction) | |
| 3722 { | |
| 3723 sa = ((FuncExp *)ea)->fd; | |
| 3724 goto Lsa; | |
| 3725 } | |
| 3726 } | |
| 3727 else if (sa) | |
| 3728 { | |
| 3729 Lsa: | |
| 3730 Declaration *d = sa->isDeclaration(); | |
| 3731 if (d && !d->isDataseg() && | |
| 3732 #if DMDV2 | |
| 3733 !(d->storage_class & STCmanifest) && | |
| 3734 #endif | |
| 3735 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && | |
| 3736 !isTemplateMixin()) | |
| 3737 { | |
| 3738 // if module level template | |
| 3739 if (tempdecl->toParent()->isModule()) | |
| 3740 { Dsymbol *dparent = d->toParent(); | |
| 3741 if (!isnested) | |
| 3742 isnested = dparent; | |
| 3743 else if (isnested != dparent) | |
| 3744 { | |
| 3745 /* Select the more deeply nested of the two. | |
| 3746 * Error if one is not nested inside the other. | |
| 3747 */ | |
| 3748 for (Dsymbol *p = isnested; p; p = p->parent) | |
| 3749 { | |
| 3750 if (p == dparent) | |
| 3751 goto L1; // isnested is most nested | |
| 3752 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3753 for (Dsymbol *p = dparent; p; p = p->parent) |
| 336 | 3754 { |
| 3755 if (p == isnested) | |
| 3756 { isnested = dparent; | |
| 3757 goto L1; // dparent is most nested | |
| 3758 } | |
| 3759 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3760 error("%s is nested in both %s and %s", |
|
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3761 toChars(), isnested->toChars(), dparent->toChars()); |
| 336 | 3762 } |
| 3763 L1: | |
| 3764 //printf("\tnested inside %s\n", isnested->toChars()); | |
| 3765 nested |= 1; | |
| 3766 } | |
| 3767 else | |
| 3768 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3769 } | |
| 3770 } | |
| 3771 else if (va) | |
| 3772 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3773 nested |= hasNestedArgs(&va->objects); |
| 336 | 3774 } |
| 3775 } | |
| 3776 return nested; | |
| 3777 } | |
| 3778 | |
| 3779 /**************************************** | |
| 3780 * This instance needs an identifier for name mangling purposes. | |
| 3781 * Create one by taking the template declaration name and adding | |
| 3782 * the type signature for it. | |
| 3783 */ | |
| 3784 | |
| 3785 Identifier *TemplateInstance::genIdent() | |
| 3786 { OutBuffer buf; | |
| 3787 char *id; | |
| 3788 Objects *args; | |
| 3789 | |
| 3790 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3791 id = tempdecl->ident->toChars(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3792 buf.printf("__T%zu%s", strlen(id), id); |
| 336 | 3793 args = tiargs; |
| 3794 for (int i = 0; i < args->dim; i++) | |
| 3795 { Object *o = (Object *)args->data[i]; | |
| 3796 Type *ta = isType(o); | |
| 3797 Expression *ea = isExpression(o); | |
| 3798 Dsymbol *sa = isDsymbol(o); | |
| 3799 Tuple *va = isTuple(o); | |
| 3800 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3801 if (ta) | |
| 3802 { | |
| 3803 buf.writeByte('T'); | |
| 3804 if (ta->deco) | |
| 3805 buf.writestring(ta->deco); | |
| 3806 else | |
| 3807 { | |
| 3808 #ifdef DEBUG | |
| 3809 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3810 #endif | |
| 3811 assert(global.errors); | |
| 3812 } | |
| 3813 } | |
| 3814 else if (ea) | |
| 3815 { sinteger_t v; | |
| 3816 real_t r; | |
| 3817 | |
| 3818 if (ea->op == TOKvar) | |
| 3819 { | |
| 3820 sa = ((VarExp *)ea)->var; | |
| 3821 ea = NULL; | |
| 3822 goto Lsa; | |
| 3823 } | |
| 3824 if (ea->op == TOKfunction) | |
| 3825 { | |
| 3826 sa = ((FuncExp *)ea)->fd; | |
| 3827 ea = NULL; | |
| 3828 goto Lsa; | |
| 3829 } | |
| 3830 buf.writeByte('V'); | |
| 3831 if (ea->op == TOKtuple) | |
| 3832 { ea->error("tuple is not a valid template value argument"); | |
| 3833 continue; | |
| 3834 } | |
| 3835 #if 1 | |
| 3836 /* Use deco that matches what it would be for a function parameter | |
| 3837 */ | |
| 3838 buf.writestring(ea->type->deco); | |
| 3839 #else | |
| 3840 // Use type of parameter, not type of argument | |
| 3841 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3842 assert(tp); | |
| 3843 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3844 assert(tvp); | |
| 3845 buf.writestring(tvp->valType->deco); | |
| 3846 #endif | |
| 3847 ea->toMangleBuffer(&buf); | |
| 3848 } | |
| 3849 else if (sa) | |
| 3850 { | |
| 3851 Lsa: | |
| 3852 buf.writeByte('S'); | |
| 3853 Declaration *d = sa->isDeclaration(); | |
| 3854 if (d && !d->type->deco) | |
| 3855 error("forward reference of %s", d->toChars()); | |
| 3856 else | |
| 3857 { | |
| 3858 char *p = sa->mangle(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3859 buf.printf("%zu%s", strlen(p), p); |
| 336 | 3860 } |
| 3861 } | |
| 3862 else if (va) | |
| 3863 { | |
| 3864 assert(i + 1 == args->dim); // must be last one | |
| 3865 args = &va->objects; | |
| 3866 i = -1; | |
| 3867 } | |
| 3868 else | |
| 3869 assert(0); | |
| 3870 } | |
| 3871 buf.writeByte('Z'); | |
| 3872 id = buf.toChars(); | |
| 3873 buf.data = NULL; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3874 //printf("\tgenIdent = %s\n", id); |
| 336 | 3875 return new Identifier(id, TOKidentifier); |
| 3876 } | |
| 3877 | |
| 3878 | |
| 3879 /**************************************************** | |
| 3880 * Declare parameters of template instance, initialize them with the | |
| 3881 * template instance arguments. | |
| 3882 */ | |
| 3883 | |
| 3884 void TemplateInstance::declareParameters(Scope *scope) | |
| 3885 { | |
| 3886 //printf("TemplateInstance::declareParameters()\n"); | |
| 3887 for (int i = 0; i < tdtypes.dim; i++) | |
| 3888 { | |
| 3889 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3890 //Object *o = (Object *)tiargs->data[i]; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3891 Object *o = (Object *)tdtypes.data[i]; // initializer for tp |
| 336 | 3892 |
| 3893 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3894 tempdecl->declareParameter(scope, tp, o); | |
| 3895 } | |
| 3896 } | |
| 3897 | |
| 3898 | |
| 3899 void TemplateInstance::semantic2(Scope *sc) | |
| 3900 { int i; | |
| 3901 | |
| 3902 if (semanticdone >= 2) | |
| 3903 return; | |
| 3904 semanticdone = 2; | |
| 3905 #if LOG | |
| 3906 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3907 #endif | |
| 3908 if (!errors && members) | |
| 3909 { | |
| 3910 sc = tempdecl->scope; | |
| 3911 assert(sc); | |
| 3912 sc = sc->push(argsym); | |
| 3913 sc = sc->push(this); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3914 sc->tinst = this; |
| 336 | 3915 for (i = 0; i < members->dim; i++) |
| 3916 { | |
| 3917 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3918 #if LOG | |
| 3919 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3920 #endif | |
| 3921 s->semantic2(sc); | |
| 3922 } | |
| 3923 sc = sc->pop(); | |
| 3924 sc->pop(); | |
| 3925 } | |
| 3926 #if LOG | |
| 3927 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3928 #endif | |
| 3929 } | |
| 3930 | |
| 3931 void TemplateInstance::semantic3(Scope *sc) | |
| 3932 { | |
| 3933 #if LOG | |
| 3934 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3935 #endif | |
| 3936 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3937 if (semanticdone >= 3) | |
| 3938 return; | |
| 3939 semanticdone = 3; | |
| 3940 if (!errors && members) | |
| 3941 { | |
| 3942 sc = tempdecl->scope; | |
| 3943 sc = sc->push(argsym); | |
| 3944 sc = sc->push(this); | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3945 sc->tinst = this; |
| 336 | 3946 for (int i = 0; i < members->dim; i++) |
| 3947 { | |
| 3948 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3949 s->semantic3(sc); | |
| 3950 } | |
| 3951 sc = sc->pop(); | |
| 3952 sc->pop(); | |
| 3953 } | |
| 3954 } | |
| 3955 | |
| 3956 void TemplateInstance::toObjFile(int multiobj) | |
| 3957 { | |
| 3958 #if LOG | |
| 3959 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3960 #endif | |
| 3961 if (!errors && members) | |
| 3962 { | |
| 3963 if (multiobj) | |
| 3964 // Append to list of object files to be written later | |
| 3965 //obj_append(this); | |
| 3966 assert(0 && "multiobj"); | |
| 3967 else | |
| 3968 { | |
| 3969 for (int i = 0; i < members->dim; i++) | |
| 3970 { | |
| 3971 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3972 s->toObjFile(multiobj); | |
| 3973 } | |
| 3974 } | |
| 3975 } | |
| 3976 } | |
| 3977 | |
| 3978 void TemplateInstance::inlineScan() | |
| 3979 { | |
| 3980 #if LOG | |
| 3981 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3982 #endif | |
| 3983 if (!errors && members) | |
| 3984 { | |
| 3985 for (int i = 0; i < members->dim; i++) | |
| 3986 { | |
| 3987 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3988 s->inlineScan(); | |
| 3989 } | |
| 3990 } | |
| 3991 } | |
| 3992 | |
| 3993 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3994 { | |
| 3995 int i; | |
| 3996 | |
| 3997 Identifier *id = name; | |
| 3998 buf->writestring(id->toChars()); | |
| 3999 buf->writestring("!("); | |
| 4000 if (nest) | |
| 4001 buf->writestring("..."); | |
| 4002 else | |
| 4003 { | |
| 4004 nest++; | |
| 4005 Objects *args = tiargs; | |
| 4006 for (i = 0; i < args->dim; i++) | |
| 4007 { | |
| 4008 if (i) | |
| 4009 buf->writeByte(','); | |
| 4010 Object *oarg = (Object *)args->data[i]; | |
| 4011 ObjectToCBuffer(buf, hgs, oarg); | |
| 4012 } | |
| 4013 nest--; | |
| 4014 } | |
| 4015 buf->writeByte(')'); | |
| 4016 } | |
| 4017 | |
| 4018 | |
| 4019 Dsymbol *TemplateInstance::toAlias() | |
| 4020 { | |
| 4021 #if LOG | |
| 4022 printf("TemplateInstance::toAlias()\n"); | |
| 4023 #endif | |
| 4024 if (!inst) | |
| 4025 { error("cannot resolve forward reference"); | |
| 4026 return this; | |
| 4027 } | |
| 4028 | |
| 4029 if (inst != this) | |
| 4030 return inst->toAlias(); | |
| 4031 | |
| 4032 if (aliasdecl) | |
| 4033 return aliasdecl->toAlias(); | |
| 4034 | |
| 4035 return inst; | |
| 4036 } | |
| 4037 | |
| 4038 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 4039 { | |
| 4040 return aliasdecl; | |
| 4041 } | |
| 4042 | |
| 4043 const char *TemplateInstance::kind() | |
| 4044 { | |
| 4045 return "template instance"; | |
| 4046 } | |
| 4047 | |
| 4048 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 4049 { | |
| 4050 *ps = NULL; | |
| 4051 return TRUE; | |
| 4052 } | |
| 4053 | |
| 4054 char *TemplateInstance::toChars() | |
| 4055 { | |
| 4056 OutBuffer buf; | |
| 4057 HdrGenState hgs; | |
| 4058 char *s; | |
| 4059 | |
| 4060 toCBuffer(&buf, &hgs); | |
| 4061 s = buf.toChars(); | |
| 4062 buf.data = NULL; | |
| 4063 return s; | |
| 4064 } | |
| 4065 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4066 void TemplateInstance::printInstantiationTrace() |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4067 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4068 if(global.gag) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4069 return; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4070 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4071 const int max_shown = 6; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4072 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4073 // determine instantiation depth |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4074 int n_instantiations = 1; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4075 TemplateInstance* cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4076 while(cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4077 ++n_instantiations; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4078 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4079 // show full trace only if it's short or verbose is on |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
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parents:
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diff
changeset
|
4080 if(n_instantiations <= max_shown || global.params.verbose) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
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parents:
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diff
changeset
|
4081 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
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diff
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|
4082 cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
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diff
changeset
|
4083 while(cur) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4084 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
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diff
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|
4085 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
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Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
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diff
changeset
|
4086 cur = cur->tinst; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
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|
4087 } |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
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|
4088 } |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4089 else |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4090 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4091 cur = this; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4092 size_t i = 0; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4093 for(; i < max_shown/2; ++i, cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4094 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4095 fprintf(stdmsg," ... (%d instantiations, -v to show) ...\n", n_instantiations - max_shown); |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4096 for(; i < n_instantiations - max_shown + max_shown/2; ++i, cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4097 {} |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4098 for(; i < n_instantiations; ++i, cur = cur->tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4099 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
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Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
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diff
changeset
|
4100 } |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4101 } |
|
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Introducing template instantiation traces for static asserts and errors within templates.
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diff
changeset
|
4102 |
| 336 | 4103 /* ======================== TemplateMixin ================================ */ |
| 4104 | |
| 4105 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 4106 Array *idents, Objects *tiargs) | |
| 4107 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 4108 { | |
| 4109 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 4110 this->ident = ident; | |
| 4111 this->tqual = tqual; | |
| 4112 this->idents = idents; | |
| 4113 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 4114 this->scope = NULL; | |
| 4115 } | |
| 4116 | |
| 4117 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 4118 { TemplateMixin *tm; | |
| 4119 | |
| 4120 Array *ids = new Array(); | |
| 4121 ids->setDim(idents->dim); | |
| 4122 for (int i = 0; i < idents->dim; i++) | |
| 4123 { // Matches TypeQualified::syntaxCopyHelper() | |
| 4124 Identifier *id = (Identifier *)idents->data[i]; | |
| 4125 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 4126 { | |
| 4127 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4128 | |
| 4129 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 4130 id = (Identifier *)ti; | |
| 4131 } | |
| 4132 ids->data[i] = id; | |
| 4133 } | |
| 4134 | |
| 4135 tm = new TemplateMixin(loc, ident, | |
| 4136 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 4137 ids, tiargs); | |
| 4138 TemplateInstance::syntaxCopy(tm); | |
| 4139 return tm; | |
| 4140 } | |
| 4141 | |
| 4142 void TemplateMixin::semantic(Scope *sc) | |
| 4143 { | |
| 4144 #if LOG | |
| 4145 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4146 fflush(stdout); | |
| 4147 #endif | |
| 4148 if (semanticdone && | |
| 4149 // This for when a class/struct contains mixin members, and | |
| 4150 // is done over because of forward references | |
| 4151 (!parent || !toParent()->isAggregateDeclaration())) | |
| 4152 { | |
| 4153 #if LOG | |
| 4154 printf("\tsemantic done\n"); | |
| 4155 #endif | |
| 4156 return; | |
| 4157 } | |
| 4158 if (!semanticdone) | |
| 4159 semanticdone = 1; | |
| 4160 #if LOG | |
| 4161 printf("\tdo semantic\n"); | |
| 4162 #endif | |
| 4163 | |
| 4164 #if !IN_LLVM | |
| 4165 // dont know what this is | |
| 4166 util_progress(); | |
| 4167 #endif | |
| 4168 | |
| 4169 Scope *scx = NULL; | |
| 4170 if (scope) | |
| 4171 { sc = scope; | |
| 4172 scx = scope; // save so we don't make redundant copies | |
| 4173 scope = NULL; | |
| 4174 } | |
| 4175 | |
| 4176 // Follow qualifications to find the TemplateDeclaration | |
| 4177 if (!tempdecl) | |
| 4178 { Dsymbol *s; | |
| 4179 int i; | |
| 4180 Identifier *id; | |
| 4181 | |
| 4182 if (tqual) | |
| 4183 { s = tqual->toDsymbol(sc); | |
| 4184 i = 0; | |
| 4185 } | |
| 4186 else | |
| 4187 { | |
| 4188 i = 1; | |
| 4189 id = (Identifier *)idents->data[0]; | |
| 4190 switch (id->dyncast()) | |
| 4191 { | |
| 4192 case DYNCAST_IDENTIFIER: | |
| 4193 s = sc->search(loc, id, NULL); | |
| 4194 break; | |
| 4195 | |
| 4196 case DYNCAST_DSYMBOL: | |
| 4197 { | |
| 4198 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4199 ti->semantic(sc); | |
| 4200 s = ti; | |
| 4201 break; | |
| 4202 } | |
| 4203 default: | |
| 4204 assert(0); | |
| 4205 } | |
| 4206 } | |
| 4207 | |
| 4208 for (; i < idents->dim; i++) | |
| 4209 { | |
| 4210 if (!s) | |
| 4211 break; | |
| 4212 id = (Identifier *)idents->data[i]; | |
| 4213 s = s->searchX(loc, sc, id); | |
| 4214 } | |
| 4215 if (!s) | |
| 4216 { | |
| 4217 error("is not defined"); | |
| 4218 inst = this; | |
| 4219 return; | |
| 4220 } | |
| 4221 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 4222 if (!tempdecl) | |
| 4223 { | |
| 4224 error("%s isn't a template", s->toChars()); | |
| 4225 inst = this; | |
| 4226 return; | |
| 4227 } | |
| 4228 } | |
| 4229 | |
| 4230 // Look for forward reference | |
| 4231 assert(tempdecl); | |
| 4232 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 4233 { | |
| 4234 if (!td->scope) | |
| 4235 { | |
| 4236 /* Cannot handle forward references if mixin is a struct member, | |
| 4237 * because addField must happen during struct's semantic, not | |
| 4238 * during the mixin semantic. | |
| 4239 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 4240 * semantic. | |
| 4241 */ | |
| 4242 semanticdone = 0; | |
| 4243 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 4244 if (ad) | |
| 4245 ad->sizeok = 2; | |
| 4246 else | |
| 4247 { | |
| 4248 // Forward reference | |
| 4249 //printf("forward reference - deferring\n"); | |
| 4250 scope = scx ? scx : new Scope(*sc); | |
| 4251 scope->setNoFree(); | |
| 4252 scope->module->addDeferredSemantic(this); | |
| 4253 } | |
| 4254 return; | |
| 4255 } | |
| 4256 } | |
| 4257 | |
| 4258 // Run semantic on each argument, place results in tiargs[] | |
| 4259 semanticTiargs(sc); | |
| 4260 | |
| 4261 tempdecl = findBestMatch(sc); | |
| 4262 if (!tempdecl) | |
| 4263 { inst = this; | |
| 4264 return; // error recovery | |
| 4265 } | |
| 4266 | |
| 4267 if (!ident) | |
| 4268 ident = genIdent(); | |
| 4269 | |
| 4270 inst = this; | |
| 4271 parent = sc->parent; | |
| 4272 | |
| 4273 /* Detect recursive mixin instantiations. | |
| 4274 */ | |
| 4275 for (Dsymbol *s = parent; s; s = s->parent) | |
| 4276 { | |
| 4277 //printf("\ts = '%s'\n", s->toChars()); | |
| 4278 TemplateMixin *tm = s->isTemplateMixin(); | |
| 4279 if (!tm || tempdecl != tm->tempdecl) | |
| 4280 continue; | |
| 4281 | |
| 4282 /* Different argument list lengths happen with variadic args | |
| 4283 */ | |
| 4284 if (tiargs->dim != tm->tiargs->dim) | |
| 4285 continue; | |
| 4286 | |
| 4287 for (int i = 0; i < tiargs->dim; i++) | |
| 4288 { Object *o = (Object *)tiargs->data[i]; | |
| 4289 Type *ta = isType(o); | |
| 4290 Expression *ea = isExpression(o); | |
| 4291 Dsymbol *sa = isDsymbol(o); | |
| 4292 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 4293 if (ta) | |
| 4294 { | |
| 4295 Type *tmta = isType(tmo); | |
| 4296 if (!tmta) | |
| 4297 goto Lcontinue; | |
| 4298 if (!ta->equals(tmta)) | |
| 4299 goto Lcontinue; | |
| 4300 } | |
| 4301 else if (ea) | |
| 4302 { Expression *tme = isExpression(tmo); | |
| 4303 if (!tme || !ea->equals(tme)) | |
| 4304 goto Lcontinue; | |
| 4305 } | |
| 4306 else if (sa) | |
| 4307 { | |
| 4308 Dsymbol *tmsa = isDsymbol(tmo); | |
| 4309 if (sa != tmsa) | |
| 4310 goto Lcontinue; | |
| 4311 } | |
| 4312 else | |
| 4313 assert(0); | |
| 4314 } | |
| 4315 error("recursive mixin instantiation"); | |
| 4316 return; | |
| 4317 | |
| 4318 Lcontinue: | |
| 4319 continue; | |
| 4320 } | |
| 4321 | |
| 4322 // Copy the syntax trees from the TemplateDeclaration | |
| 4323 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 4324 if (!members) | |
| 4325 return; | |
| 4326 | |
| 4327 symtab = new DsymbolTable(); | |
| 4328 | |
| 4329 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 4330 { | |
| 4331 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 4332 if (sds) | |
| 4333 { | |
| 4334 sds->importScope(this, PROTpublic); | |
| 4335 break; | |
| 4336 } | |
| 4337 } | |
| 4338 | |
| 4339 #if LOG | |
| 4340 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 4341 #endif | |
| 4342 Scope *scy = sc; | |
| 4343 scy = sc->push(this); | |
| 4344 scy->parent = this; | |
| 4345 | |
| 4346 argsym = new ScopeDsymbol(); | |
| 4347 argsym->parent = scy->parent; | |
| 4348 Scope *scope = scy->push(argsym); | |
| 4349 | |
| 4350 unsigned errorsave = global.errors; | |
| 4351 | |
| 4352 // Declare each template parameter as an alias for the argument type | |
| 4353 declareParameters(scope); | |
| 4354 | |
| 4355 // Add members to enclosing scope, as well as this scope | |
| 4356 for (unsigned i = 0; i < members->dim; i++) | |
| 4357 { Dsymbol *s; | |
| 4358 | |
| 4359 s = (Dsymbol *)members->data[i]; | |
| 4360 s->addMember(scope, this, i); | |
| 4361 //sc->insert(s); | |
| 4362 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 4363 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 4364 } | |
| 4365 | |
| 4366 // Do semantic() analysis on template instance members | |
| 4367 #if LOG | |
| 4368 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 4369 #endif | |
| 4370 Scope *sc2; | |
| 4371 sc2 = scope->push(this); | |
| 4372 sc2->offset = sc->offset; | |
| 4373 for (int i = 0; i < members->dim; i++) | |
| 4374 { | |
| 4375 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4376 s->semantic(sc2); | |
| 4377 } | |
| 4378 sc->offset = sc2->offset; | |
| 4379 | |
| 4380 /* The problem is when to parse the initializer for a variable. | |
| 4381 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 4382 * for initializers inside a function. | |
| 4383 */ | |
| 4384 // if (sc->parent->isFuncDeclaration()) | |
| 4385 | |
| 4386 semantic2(sc2); | |
| 4387 | |
| 4388 if (sc->func) | |
| 4389 { | |
| 4390 semantic3(sc2); | |
| 4391 } | |
| 4392 | |
| 4393 // Give additional context info if error occurred during instantiation | |
| 4394 if (global.errors != errorsave) | |
| 4395 { | |
| 4396 error("error instantiating"); | |
| 4397 } | |
| 4398 | |
| 4399 sc2->pop(); | |
| 4400 | |
| 4401 scope->pop(); | |
| 4402 | |
| 4403 // if (!isAnonymous()) | |
| 4404 { | |
| 4405 scy->pop(); | |
| 4406 } | |
| 4407 #if LOG | |
| 4408 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4409 #endif | |
| 4410 } | |
| 4411 | |
| 4412 void TemplateMixin::semantic2(Scope *sc) | |
| 4413 { int i; | |
| 4414 | |
| 4415 if (semanticdone >= 2) | |
| 4416 return; | |
| 4417 semanticdone = 2; | |
| 4418 #if LOG | |
| 4419 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4420 #endif | |
| 4421 if (members) | |
| 4422 { | |
| 4423 assert(sc); | |
| 4424 sc = sc->push(argsym); | |
| 4425 sc = sc->push(this); | |
| 4426 for (i = 0; i < members->dim; i++) | |
| 4427 { | |
| 4428 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4429 #if LOG | |
| 4430 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 4431 #endif | |
| 4432 s->semantic2(sc); | |
| 4433 } | |
| 4434 sc = sc->pop(); | |
| 4435 sc->pop(); | |
| 4436 } | |
| 4437 #if LOG | |
| 4438 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4439 #endif | |
| 4440 } | |
| 4441 | |
| 4442 void TemplateMixin::semantic3(Scope *sc) | |
| 4443 { int i; | |
| 4444 | |
| 4445 if (semanticdone >= 3) | |
| 4446 return; | |
| 4447 semanticdone = 3; | |
| 4448 #if LOG | |
| 4449 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 4450 #endif | |
| 4451 if (members) | |
| 4452 { | |
| 4453 sc = sc->push(argsym); | |
| 4454 sc = sc->push(this); | |
| 4455 for (i = 0; i < members->dim; i++) | |
| 4456 { | |
| 4457 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4458 s->semantic3(sc); | |
| 4459 } | |
| 4460 sc = sc->pop(); | |
| 4461 sc->pop(); | |
| 4462 } | |
| 4463 } | |
| 4464 | |
| 4465 void TemplateMixin::inlineScan() | |
| 4466 { | |
| 4467 TemplateInstance::inlineScan(); | |
| 4468 } | |
| 4469 | |
| 4470 const char *TemplateMixin::kind() | |
| 4471 { | |
| 4472 return "mixin"; | |
| 4473 } | |
| 4474 | |
| 4475 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 4476 { | |
| 4477 return Dsymbol::oneMember(ps); | |
| 4478 } | |
| 4479 | |
| 4480 int TemplateMixin::hasPointers() | |
| 4481 { | |
| 4482 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 4483 for (size_t i = 0; i < members->dim; i++) | |
| 4484 { | |
| 4485 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4486 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 4487 if (s->hasPointers()) | |
| 4488 { | |
| 4489 return 1; | |
| 4490 } | |
| 4491 } | |
| 4492 return 0; | |
| 4493 } | |
| 4494 | |
| 4495 char *TemplateMixin::toChars() | |
| 4496 { | |
| 4497 OutBuffer buf; | |
| 4498 HdrGenState hgs; | |
| 4499 char *s; | |
| 4500 | |
| 4501 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 4502 s = buf.toChars(); | |
| 4503 buf.data = NULL; | |
| 4504 return s; | |
| 4505 } | |
| 4506 | |
| 4507 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4508 { | |
| 4509 buf->writestring("mixin "); | |
| 4510 | |
| 4511 for (int i = 0; i < idents->dim; i++) | |
| 4512 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4513 | |
| 4514 if (i) | |
| 4515 buf->writeByte('.'); | |
| 4516 buf->writestring(id->toChars()); | |
| 4517 } | |
| 4518 buf->writestring("!("); | |
| 4519 if (tiargs) | |
| 4520 { | |
| 4521 for (int i = 0; i < tiargs->dim; i++) | |
| 4522 { if (i) | |
| 4523 buf->writebyte(','); | |
| 4524 Object *oarg = (Object *)tiargs->data[i]; | |
| 4525 Type *t = isType(oarg); | |
| 4526 Expression *e = isExpression(oarg); | |
| 4527 Dsymbol *s = isDsymbol(oarg); | |
| 4528 if (t) | |
| 4529 t->toCBuffer(buf, NULL, hgs); | |
| 4530 else if (e) | |
| 4531 e->toCBuffer(buf, hgs); | |
| 4532 else if (s) | |
| 4533 { | |
| 4534 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4535 buf->writestring(p); | |
| 4536 } | |
| 4537 else if (!oarg) | |
| 4538 { | |
| 4539 buf->writestring("NULL"); | |
| 4540 } | |
| 4541 else | |
| 4542 { | |
| 4543 assert(0); | |
| 4544 } | |
| 4545 } | |
| 4546 } | |
| 4547 buf->writebyte(')'); | |
| 4548 if (ident) | |
| 4549 { | |
| 4550 buf->writebyte(' '); | |
| 4551 buf->writestring(ident->toChars()); | |
| 4552 } | |
| 4553 buf->writebyte(';'); | |
| 4554 buf->writenl(); | |
| 4555 } | |
| 4556 | |
| 4557 | |
| 4558 void TemplateMixin::toObjFile(int multiobj) | |
| 4559 { | |
| 4560 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4561 TemplateInstance::toObjFile(multiobj); | |
| 4562 } | |
| 4563 |