Mercurial > projects > ldc
annotate dmd/template.c @ 1146:1860414bf3b7
* Moved ir/irsymbol.cpp/h into ir/irdsymbol.cpp/h.
* Added #if IN_DMD versioning around DMD backend specific code in the D1 frontend, D2 is currently broken.
* All part of a greater cleanup scheme.
| author | Tomas Lindquist Olsen <tomas.l.olsen gmail.com> |
|---|---|
| date | Thu, 26 Mar 2009 20:45:53 +0100 |
| parents | b30fe7e1dbb9 |
| children | dbe4af57b240 |
| 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 | |
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366 |
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367 // FIXME: LDC |
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368 //sc->module->toModuleArray(); |
| 336 | 369 } |
| 370 | |
| 371 if (/*global.params.useAssert &&*/ sc->module) | |
| 372 { | |
| 373 // Generate this function as it may be used | |
| 374 // when template is instantiated in other modules | |
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375 |
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376 // FIXME: LDC |
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377 //sc->module->toModuleAssert(); |
| 336 | 378 } |
| 379 | |
| 380 /* Remember Scope for later instantiations, but make | |
| 381 * a copy since attributes can change. | |
| 382 */ | |
| 383 this->scope = new Scope(*sc); | |
| 384 this->scope->setNoFree(); | |
| 385 | |
| 386 // Set up scope for parameters | |
| 387 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 388 paramsym->parent = sc->parent; | |
| 389 Scope *paramscope = sc->push(paramsym); | |
| 390 paramscope->parameterSpecialization = 1; | |
|
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391 paramscope->stc = 0; |
| 336 | 392 |
| 393 if (global.params.doDocComments) | |
| 394 { | |
| 395 origParameters = new TemplateParameters(); | |
| 396 origParameters->setDim(parameters->dim); | |
| 397 for (int i = 0; i < parameters->dim; i++) | |
| 398 { | |
| 399 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 400 origParameters->data[i] = (void *)tp->syntaxCopy(); | |
| 401 } | |
| 402 } | |
| 403 | |
| 404 for (int i = 0; i < parameters->dim; i++) | |
| 405 { | |
| 406 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 407 | |
| 408 tp->declareParameter(paramscope); | |
| 409 } | |
| 410 | |
| 411 for (int i = 0; i < parameters->dim; i++) | |
| 412 { | |
| 413 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 414 | |
| 415 tp->semantic(paramscope); | |
| 416 if (i + 1 != parameters->dim && tp->isTemplateTupleParameter()) | |
| 417 error("template tuple parameter must be last one"); | |
| 418 } | |
| 419 | |
| 420 paramscope->pop(); | |
| 421 | |
| 422 if (members) | |
| 423 { | |
| 424 Dsymbol *s; | |
| 425 if (Dsymbol::oneMembers(members, &s)) | |
| 426 { | |
| 427 if (s && s->ident && s->ident->equals(ident)) | |
| 428 { | |
| 429 onemember = s; | |
| 430 s->parent = this; | |
| 431 } | |
| 432 } | |
| 433 } | |
| 434 | |
| 435 /* BUG: should check: | |
| 436 * o no virtual functions or non-static data members of classes | |
| 437 */ | |
| 438 } | |
| 439 | |
| 440 const char *TemplateDeclaration::kind() | |
| 441 { | |
| 442 return (onemember && onemember->isAggregateDeclaration()) | |
| 443 ? onemember->kind() | |
| 444 : (char *)"template"; | |
| 445 } | |
| 446 | |
| 447 /********************************** | |
| 448 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 449 * Return !=0 if successful; i.e. no conflict. | |
| 450 */ | |
| 451 | |
| 452 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 453 { | |
| 454 TemplateDeclaration **pf; | |
| 455 TemplateDeclaration *f; | |
| 456 | |
| 457 #if LOG | |
| 458 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 459 #endif | |
| 460 f = s->isTemplateDeclaration(); | |
| 461 if (!f) | |
| 462 return FALSE; | |
| 463 TemplateDeclaration *pthis = this; | |
| 464 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 465 { | |
| 466 #if 0 | |
| 467 // Conflict if TemplateParameter's match | |
| 468 // Will get caught anyway later with TemplateInstance, but | |
| 469 // should check it now. | |
| 470 TemplateDeclaration *f2 = *pf; | |
| 471 | |
| 472 if (f->parameters->dim != f2->parameters->dim) | |
| 473 goto Lcontinue; | |
| 474 | |
| 475 for (int i = 0; i < f->parameters->dim; i++) | |
| 476 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 477 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 478 | |
| 479 if (!p1->overloadMatch(p2)) | |
| 480 goto Lcontinue; | |
| 481 } | |
| 482 | |
| 483 #if LOG | |
| 484 printf("\tfalse: conflict\n"); | |
| 485 #endif | |
| 486 return FALSE; | |
| 487 | |
| 488 Lcontinue: | |
| 489 ; | |
| 490 #endif | |
| 491 } | |
| 492 | |
| 493 f->overroot = this; | |
| 494 *pf = f; | |
| 495 #if LOG | |
| 496 printf("\ttrue: no conflict\n"); | |
| 497 #endif | |
| 498 return TRUE; | |
| 499 } | |
| 500 | |
| 501 /*************************************** | |
| 502 * Given that ti is an instance of this TemplateDeclaration, | |
| 503 * deduce the types of the parameters to this, and store | |
| 504 * those deduced types in dedtypes[]. | |
| 505 * Input: | |
| 506 * flag 1: don't do semantic() because of dummy types | |
| 507 * 2: don't change types in matchArg() | |
| 508 * Output: | |
| 509 * dedtypes deduced arguments | |
| 510 * Return match level. | |
| 511 */ | |
| 512 | |
| 513 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 514 Objects *dedtypes, int flag) | |
| 515 { MATCH m; | |
| 516 int dedtypes_dim = dedtypes->dim; | |
| 517 | |
| 518 #define LOGM 0 | |
| 519 #if LOGM | |
| 520 printf("\n+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); | |
| 521 #endif | |
| 522 | |
| 523 #if 0 | |
| 524 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 525 if (ti->tiargs->dim) | |
| 526 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 527 ti->tiargs->dim, | |
| 528 ti->tiargs->data[0]); | |
| 529 #endif | |
| 530 dedtypes->zero(); | |
| 531 | |
| 532 int parameters_dim = parameters->dim; | |
| 533 int variadic = isVariadic() != NULL; | |
| 534 | |
| 535 // If more arguments than parameters, no match | |
| 536 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 537 { | |
| 538 #if LOGM | |
| 539 printf(" no match: more arguments than parameters\n"); | |
| 540 #endif | |
| 541 return MATCHnomatch; | |
| 542 } | |
| 543 | |
| 544 assert(dedtypes_dim == parameters_dim); | |
| 545 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 546 | |
| 547 // Set up scope for parameters | |
| 548 assert((size_t)scope > 0x10000); | |
| 549 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 550 paramsym->parent = scope->parent; | |
| 551 Scope *paramscope = scope->push(paramsym); | |
|
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|
552 paramscope->stc = 0; |
| 336 | 553 |
| 554 // Attempt type deduction | |
| 555 m = MATCHexact; | |
| 556 for (int i = 0; i < dedtypes_dim; i++) | |
| 557 { MATCH m2; | |
| 558 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 559 Declaration *sparam; | |
| 560 | |
| 561 //printf("\targument [%d]\n", i); | |
| 562 #if LOGM | |
| 563 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); | |
| 564 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 565 if (ttp) | |
| 566 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 567 #endif | |
| 568 | |
| 569 #if DMDV1 | |
| 570 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 571 #else | |
| 572 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam, (flag & 2) ? 1 : 0); | |
| 573 | |
| 574 #endif | |
| 575 //printf("\tm2 = %d\n", m2); | |
| 576 | |
| 577 if (m2 == MATCHnomatch) | |
| 578 { | |
| 579 #if 0 | |
| 580 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 581 #endif | |
| 582 goto Lnomatch; | |
| 583 } | |
| 584 | |
| 585 if (m2 < m) | |
| 586 m = m2; | |
| 587 | |
| 588 if (!flag) | |
| 589 sparam->semantic(paramscope); | |
| 590 if (!paramscope->insert(sparam)) | |
| 591 goto Lnomatch; | |
| 592 } | |
| 593 | |
| 594 if (!flag) | |
| 595 { | |
|
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596 /* Any parameter left without a type gets the type of |
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597 * its corresponding arg |
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598 */ |
| 336 | 599 for (int i = 0; i < dedtypes_dim; i++) |
| 600 { | |
| 601 if (!dedtypes->data[i]) | |
| 602 { assert(i < ti->tiargs->dim); | |
| 603 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 604 } | |
| 605 } | |
| 606 } | |
| 607 | |
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608 #if DMDV2 |
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609 if (m && constraint && !(flag & 1)) |
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610 { /* Check to see if constraint is satisfied. |
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611 */ |
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612 Expression *e = constraint->syntaxCopy(); |
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613 paramscope->flags |= SCOPEstaticif; |
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614 e = e->semantic(paramscope); |
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615 e = e->optimize(WANTvalue | WANTinterpret); |
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616 if (e->isBool(TRUE)) |
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617 ; |
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618 else if (e->isBool(FALSE)) |
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|
619 goto Lnomatch; |
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620 else |
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621 { |
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622 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
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|
623 } |
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624 } |
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625 #endif |
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|
626 |
| 336 | 627 #if LOGM |
| 628 // Print out the results | |
| 629 printf("--------------------------\n"); | |
| 630 printf("template %s\n", toChars()); | |
| 631 printf("instance %s\n", ti->toChars()); | |
| 632 if (m) | |
| 633 { | |
| 634 for (int i = 0; i < dedtypes_dim; i++) | |
| 635 { | |
| 636 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 637 Object *oarg; | |
| 638 | |
| 639 printf(" [%d]", i); | |
| 640 | |
| 641 if (i < ti->tiargs->dim) | |
| 642 oarg = (Object *)ti->tiargs->data[i]; | |
| 643 else | |
| 644 oarg = NULL; | |
| 645 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 646 } | |
| 647 } | |
| 648 else | |
| 649 goto Lnomatch; | |
| 650 #endif | |
| 651 | |
| 652 #if LOGM | |
| 653 printf(" match = %d\n", m); | |
| 654 #endif | |
| 655 goto Lret; | |
| 656 | |
| 657 Lnomatch: | |
| 658 #if LOGM | |
| 659 printf(" no match\n"); | |
| 660 #endif | |
| 661 m = MATCHnomatch; | |
| 662 | |
| 663 Lret: | |
| 664 paramscope->pop(); | |
| 665 #if LOGM | |
| 666 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); | |
| 667 #endif | |
| 668 return m; | |
| 669 } | |
| 670 | |
| 671 /******************************************** | |
| 672 * Determine partial specialization order of 'this' vs td2. | |
| 673 * Returns: | |
| 674 * 1 this is at least as specialized as td2 | |
| 675 * 0 td2 is more specialized than this | |
| 676 */ | |
| 677 | |
| 678 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 679 { | |
| 680 /* This works by taking the template parameters to this template | |
| 681 * declaration and feeding them to td2 as if it were a template | |
| 682 * instance. | |
| 683 * If it works, then this template is at least as specialized | |
| 684 * as td2. | |
| 685 */ | |
| 686 | |
| 687 TemplateInstance ti(0, ident); // create dummy template instance | |
| 688 Objects dedtypes; | |
| 689 | |
| 690 #define LOG_LEASTAS 0 | |
| 691 | |
| 692 #if LOG_LEASTAS | |
| 693 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 694 #endif | |
| 695 | |
| 696 // Set type arguments to dummy template instance to be types | |
| 697 // generated from the parameters to this template declaration | |
| 698 ti.tiargs = new Objects(); | |
| 699 ti.tiargs->setDim(parameters->dim); | |
| 700 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 701 { | |
| 702 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 703 | |
| 704 void *p = tp->dummyArg(); | |
| 705 if (p) | |
| 706 ti.tiargs->data[i] = p; | |
| 707 else | |
| 708 ti.tiargs->setDim(i); | |
| 709 } | |
| 710 | |
| 711 // Temporary Array to hold deduced types | |
| 712 //dedtypes.setDim(parameters->dim); | |
| 713 dedtypes.setDim(td2->parameters->dim); | |
| 714 | |
| 715 // Attempt a type deduction | |
| 716 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 717 { | |
| 718 /* A non-variadic template is more specialized than a | |
| 719 * variadic one. | |
| 720 */ | |
| 721 if (isVariadic() && !td2->isVariadic()) | |
| 722 goto L1; | |
| 723 | |
| 724 #if LOG_LEASTAS | |
| 725 printf(" matches, so is least as specialized\n"); | |
| 726 #endif | |
| 727 return 1; | |
| 728 } | |
| 729 L1: | |
| 730 #if LOG_LEASTAS | |
| 731 printf(" doesn't match, so is not as specialized\n"); | |
| 732 #endif | |
| 733 return 0; | |
| 734 } | |
| 735 | |
| 736 | |
| 737 /************************************************* | |
| 738 * Match function arguments against a specific template function. | |
| 739 * Input: | |
|
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diff
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|
740 * loc instantiation location |
| 336 | 741 * targsi Expression/Type initial list of template arguments |
|
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|
742 * ethis 'this' argument if !NULL |
| 336 | 743 * fargs arguments to function |
| 744 * Output: | |
| 745 * dedargs Expression/Type deduced template arguments | |
| 746 * Returns: | |
| 747 * match level | |
| 748 */ | |
| 749 | |
|
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|
750 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Loc loc, Objects *targsi, |
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|
751 Expression *ethis, Expressions *fargs, |
| 336 | 752 Objects *dedargs) |
| 753 { | |
| 754 size_t i; | |
| 755 size_t nfparams; | |
| 756 size_t nfargs; | |
| 757 size_t nargsi; // array size of targsi | |
| 758 int fptupindex = -1; | |
| 759 int tuple_dim = 0; | |
| 760 MATCH match = MATCHexact; | |
| 761 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 762 TypeFunction *fdtype; // type of fd | |
| 763 TemplateTupleParameter *tp; | |
| 764 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 765 | |
| 766 #if 0 | |
| 767 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); | |
| 768 for (i = 0; i < fargs->dim; i++) | |
| 769 { Expression *e = (Expression *)fargs->data[i]; | |
| 770 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 771 } | |
| 772 #endif | |
| 773 | |
| 774 assert((size_t)scope > 0x10000); | |
| 775 | |
| 776 dedargs->setDim(parameters->dim); | |
| 777 dedargs->zero(); | |
| 778 | |
| 779 dedtypes.setDim(parameters->dim); | |
| 780 dedtypes.zero(); | |
| 781 | |
| 782 // Set up scope for parameters | |
| 783 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 784 paramsym->parent = scope->parent; | |
| 785 Scope *paramscope = scope->push(paramsym); | |
| 786 | |
| 787 tp = isVariadic(); | |
| 788 | |
| 789 nargsi = 0; | |
| 790 if (targsi) | |
| 791 { // Set initial template arguments | |
| 792 | |
| 793 nargsi = targsi->dim; | |
| 794 if (nargsi > parameters->dim) | |
| 795 { if (!tp) | |
| 796 goto Lnomatch; | |
| 797 dedargs->setDim(nargsi); | |
| 798 dedargs->zero(); | |
| 799 } | |
| 800 | |
| 801 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 802 | |
| 803 for (i = 0; i < nargsi; i++) | |
|
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diff
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|
804 { assert(i < parameters->dim); |
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changeset
|
805 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
| 336 | 806 MATCH m; |
| 807 Declaration *sparam; | |
| 808 | |
| 809 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 810 //printf("\tdeduceType m = %d\n", m); | |
| 811 if (m == MATCHnomatch) | |
| 812 goto Lnomatch; | |
| 813 if (m < match) | |
| 814 match = m; | |
| 815 | |
| 816 sparam->semantic(paramscope); | |
| 817 if (!paramscope->insert(sparam)) | |
| 818 goto Lnomatch; | |
| 819 } | |
| 820 } | |
| 821 | |
| 822 assert(fd->type->ty == Tfunction); | |
| 823 fdtype = (TypeFunction *)fd->type; | |
| 824 | |
| 825 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 826 nfargs = fargs->dim; // number of function arguments | |
| 827 | |
| 828 /* Check for match of function arguments with variadic template | |
| 829 * parameter, such as: | |
| 830 * | |
| 831 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 832 * void main() { Foo(1,2,3); } | |
| 833 */ | |
| 834 tp = isVariadic(); | |
| 835 if (tp) // if variadic | |
| 836 { | |
| 837 if (nfparams == 0) // if no function parameters | |
| 838 { | |
| 839 Tuple *t = new Tuple(); | |
| 840 //printf("t = %p\n", t); | |
| 841 dedargs->data[parameters->dim - 1] = (void *)t; | |
|
1103
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- Updated to DMD frontend 1.041.
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diff
changeset
|
842 declareParameter(paramscope, tp, t); |
| 336 | 843 goto L2; |
| 844 } | |
| 845 else if (nfargs < nfparams - 1) | |
| 846 goto L1; | |
| 847 else | |
| 848 { | |
| 849 /* Figure out which of the function parameters matches | |
| 850 * the tuple template parameter. Do this by matching | |
| 851 * type identifiers. | |
| 852 * Set the index of this function parameter to fptupindex. | |
| 853 */ | |
| 854 for (fptupindex = 0; fptupindex < nfparams; fptupindex++) | |
| 855 { | |
| 856 Argument *fparam = (Argument *)fdtype->parameters->data[fptupindex]; | |
| 857 if (fparam->type->ty != Tident) | |
| 858 continue; | |
| 859 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 860 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 861 continue; | |
| 862 | |
| 863 if (fdtype->varargs) // variadic function doesn't | |
| 864 goto Lnomatch; // go with variadic template | |
| 865 | |
| 866 /* The types of the function arguments | |
| 867 * now form the tuple argument. | |
| 868 */ | |
| 869 Tuple *t = new Tuple(); | |
| 870 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 871 | |
| 872 tuple_dim = nfargs - (nfparams - 1); | |
| 873 t->objects.setDim(tuple_dim); | |
| 874 for (i = 0; i < tuple_dim; i++) | |
| 875 { Expression *farg = (Expression *)fargs->data[fptupindex + i]; | |
| 876 t->objects.data[i] = (void *)farg->type; | |
| 877 } | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
1089
diff
changeset
|
878 declareParameter(paramscope, tp, t); |
| 336 | 879 goto L2; |
| 880 } | |
| 881 fptupindex = -1; | |
| 882 } | |
| 883 } | |
| 884 | |
| 885 L1: | |
| 886 if (nfparams == nfargs) | |
| 887 ; | |
| 888 else if (nfargs > nfparams) | |
| 889 { | |
| 890 if (fdtype->varargs == 0) | |
| 891 goto Lnomatch; // too many args, no match | |
| 892 match = MATCHconvert; // match ... with a conversion | |
| 893 } | |
| 894 | |
| 895 L2: | |
|
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|
896 #if DMDV2 |
|
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|
897 // Match 'ethis' to any TemplateThisParameter's |
|
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898 if (ethis) |
|
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|
899 { |
|
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|
900 for (size_t i = 0; i < parameters->dim; i++) |
|
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|
901 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
|
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|
902 TemplateThisParameter *ttp = tp->isTemplateThisParameter(); |
|
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|
903 if (ttp) |
|
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|
904 { MATCH m; |
|
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|
905 |
|
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|
906 Type *t = new TypeIdentifier(0, ttp->ident); |
|
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|
907 m = ethis->type->deduceType(scope, t, parameters, &dedtypes); |
|
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|
908 if (!m) |
|
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|
909 goto Lnomatch; |
|
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diff
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|
910 if (m < match) |
|
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|
911 match = m; // pick worst match |
|
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|
912 } |
|
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|
913 } |
|
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diff
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|
914 } |
|
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|
915 #endif |
|
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|
916 |
| 336 | 917 // Loop through the function parameters |
| 918 for (i = 0; i < nfparams; i++) | |
| 919 { | |
| 920 /* Skip over function parameters which wound up | |
| 921 * as part of a template tuple parameter. | |
| 922 */ | |
| 923 if (i == fptupindex) | |
| 924 { if (fptupindex == nfparams - 1) | |
| 925 break; | |
| 926 i += tuple_dim - 1; | |
| 927 continue; | |
| 928 } | |
| 929 | |
| 930 Argument *fparam = Argument::getNth(fdtype->parameters, i); | |
| 931 | |
| 932 if (i >= nfargs) // if not enough arguments | |
| 933 { | |
| 934 if (fparam->defaultArg) | |
| 935 { /* Default arguments do not participate in template argument | |
| 936 * deduction. | |
| 937 */ | |
| 938 goto Lmatch; | |
| 939 } | |
| 940 } | |
| 941 else | |
| 942 { Expression *farg = (Expression *)fargs->data[i]; | |
| 943 #if 0 | |
| 944 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 945 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 946 #endif | |
| 947 | |
| 948 MATCH m; | |
| 949 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); | |
| 950 //printf("\tdeduceType m = %d\n", m); | |
| 951 | |
| 952 /* If no match, see if there's a conversion to a delegate | |
| 953 */ | |
| 954 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 955 { | |
| 956 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 957 TypeFunction *tf = (TypeFunction *)td->next; | |
| 958 | |
| 959 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 960 { | |
| 961 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); | |
| 962 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 963 m = MATCHconvert; | |
| 964 } | |
| 965 //printf("\tm2 = %d\n", m); | |
| 966 } | |
| 967 | |
| 968 if (m) | |
| 969 { if (m < match) | |
| 970 match = m; // pick worst match | |
| 971 continue; | |
| 972 } | |
| 973 } | |
| 974 | |
| 975 /* The following code for variadic arguments closely | |
| 976 * matches TypeFunction::callMatch() | |
| 977 */ | |
| 978 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 979 goto Lnomatch; | |
| 980 | |
| 981 /* Check for match with function parameter T... | |
| 982 */ | |
| 983 Type *tb = fparam->type->toBasetype(); | |
| 984 switch (tb->ty) | |
| 985 { | |
| 986 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 987 case Tsarray: | |
| 988 { TypeSArray *tsa = (TypeSArray *)tb; | |
| 989 integer_t sz = tsa->dim->toInteger(); | |
| 990 if (sz != nfargs - i) | |
| 991 goto Lnomatch; | |
| 992 } | |
| 993 case Tarray: | |
| 994 { TypeArray *ta = (TypeArray *)tb; | |
| 995 for (; i < nfargs; i++) | |
| 996 { | |
| 997 Expression *arg = (Expression *)fargs->data[i]; | |
| 998 assert(arg); | |
| 999 MATCH m; | |
| 1000 /* If lazy array of delegates, | |
| 1001 * convert arg(s) to delegate(s) | |
| 1002 */ | |
| 1003 Type *tret = fparam->isLazyArray(); | |
| 1004 if (tret) | |
| 1005 { | |
| 1006 if (ta->next->equals(arg->type)) | |
| 1007 { m = MATCHexact; | |
| 1008 } | |
| 1009 else | |
| 1010 { | |
| 1011 m = arg->implicitConvTo(tret); | |
| 1012 if (m == MATCHnomatch) | |
| 1013 { | |
| 1014 if (tret->toBasetype()->ty == Tvoid) | |
| 1015 m = MATCHconvert; | |
| 1016 } | |
| 1017 } | |
| 1018 } | |
| 1019 else | |
| 1020 { | |
| 1021 m = arg->type->deduceType(scope, ta->next, parameters, &dedtypes); | |
| 1022 //m = arg->implicitConvTo(ta->next); | |
| 1023 } | |
| 1024 if (m == MATCHnomatch) | |
| 1025 goto Lnomatch; | |
| 1026 if (m < match) | |
| 1027 match = m; | |
| 1028 } | |
| 1029 goto Lmatch; | |
| 1030 } | |
| 1031 case Tclass: | |
| 1032 case Tident: | |
| 1033 goto Lmatch; | |
| 1034 | |
| 1035 default: | |
| 1036 goto Lnomatch; | |
| 1037 } | |
| 1038 } | |
| 1039 | |
| 1040 Lmatch: | |
| 1041 | |
| 1042 /* Fill in any missing arguments with their defaults. | |
| 1043 */ | |
| 1044 for (i = nargsi; i < dedargs->dim; i++) | |
| 1045 { | |
| 1046 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1047 //printf("tp[%d] = %s\n", i, tp->ident->toChars()); | |
| 1048 /* For T:T*, the dedargs is the T*, dedtypes is the T | |
| 1049 * But for function templates, we really need them to match | |
| 1050 */ | |
| 1051 Object *oarg = (Object *)dedargs->data[i]; | |
| 1052 Object *oded = (Object *)dedtypes.data[i]; | |
| 1053 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, oded); | |
| 1054 if (!oarg) | |
| 1055 { | |
| 1056 if (oded) | |
| 1057 { | |
| 1058 if (tp->specialization()) | |
| 1059 { /* The specialization can work as long as afterwards | |
| 1060 * the oded == oarg | |
| 1061 */ | |
| 1062 Declaration *sparam; | |
| 1063 dedargs->data[i] = (void *)oded; | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
1064 MATCH m2 = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam, 0); |
| 336 | 1065 //printf("m2 = %d\n", m2); |
| 1066 if (!m2) | |
| 1067 goto Lnomatch; | |
| 1068 if (m2 < match) | |
| 1069 match = m2; // pick worst match | |
| 1070 if (dedtypes.data[i] != oded) | |
| 1071 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 1072 } | |
| 1073 } | |
| 1074 else | |
|
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diff
changeset
|
1075 { oded = tp->defaultArg(loc, paramscope); |
| 336 | 1076 if (!oded) |
| 1077 goto Lnomatch; | |
| 1078 } | |
| 1079 declareParameter(paramscope, tp, oded); | |
| 1080 dedargs->data[i] = (void *)oded; | |
| 1081 } | |
| 1082 } | |
| 1083 | |
|
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diff
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|
1084 #if DMDV2 |
|
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diff
changeset
|
1085 if (constraint) |
|
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Merged DMD 1.038
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diff
changeset
|
1086 { /* Check to see if constraint is satisfied. |
|
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diff
changeset
|
1087 */ |
|
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diff
changeset
|
1088 Expression *e = constraint->syntaxCopy(); |
|
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Merged DMD 1.038
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diff
changeset
|
1089 paramscope->flags |= SCOPEstaticif; |
|
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diff
changeset
|
1090 e = e->semantic(paramscope); |
|
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Merged DMD 1.038
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diff
changeset
|
1091 e = e->optimize(WANTvalue | WANTinterpret); |
|
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diff
changeset
|
1092 if (e->isBool(TRUE)) |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
1093 ; |
|
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diff
changeset
|
1094 else if (e->isBool(FALSE)) |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
1095 goto Lnomatch; |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
1096 else |
|
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diff
changeset
|
1097 { |
|
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Merged DMD 1.038
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parents:
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diff
changeset
|
1098 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
|
330f999ade44
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diff
changeset
|
1099 } |
|
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diff
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|
1100 } |
|
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|
1101 #endif |
|
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diff
changeset
|
1102 |
| 336 | 1103 #if 0 |
| 1104 for (i = 0; i < dedargs->dim; i++) | |
| 1105 { Type *t = (Type *)dedargs->data[i]; | |
| 1106 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 1107 } | |
| 1108 #endif | |
| 1109 | |
| 1110 paramscope->pop(); | |
| 1111 //printf("\tmatch %d\n", match); | |
| 1112 return match; | |
| 1113 | |
| 1114 Lnomatch: | |
| 1115 paramscope->pop(); | |
| 1116 //printf("\tnomatch\n"); | |
| 1117 return MATCHnomatch; | |
| 1118 } | |
| 1119 | |
| 1120 /************************************************** | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
1121 * Declare template parameter tp with value o, and install it in the scope sc. |
| 336 | 1122 */ |
| 1123 | |
| 1124 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 1125 { | |
| 1126 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 1127 | |
| 1128 Type *targ = isType(o); | |
| 1129 Expression *ea = isExpression(o); | |
| 1130 Dsymbol *sa = isDsymbol(o); | |
| 1131 Tuple *va = isTuple(o); | |
| 1132 | |
| 1133 Dsymbol *s; | |
| 1134 | |
| 1135 if (targ) | |
| 1136 { | |
| 1137 //printf("type %s\n", targ->toChars()); | |
| 1138 s = new AliasDeclaration(0, tp->ident, targ); | |
| 1139 } | |
| 1140 else if (sa) | |
| 1141 { | |
| 1142 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 1143 s = new AliasDeclaration(0, tp->ident, sa); | |
| 1144 } | |
| 1145 else if (ea) | |
| 1146 { | |
| 1147 // tdtypes.data[i] always matches ea here | |
| 1148 Initializer *init = new ExpInitializer(loc, ea); | |
| 1149 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1150 assert(tvp); | |
| 1151 | |
| 1152 VarDeclaration *v = new VarDeclaration(loc, tvp->valType, tp->ident, init); | |
| 1153 v->storage_class = STCconst; | |
| 1154 s = v; | |
| 1155 } | |
| 1156 else if (va) | |
| 1157 { | |
| 1158 //printf("\ttuple\n"); | |
| 1159 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 1160 } | |
| 1161 else | |
| 1162 { | |
| 1163 #ifdef DEBUG | |
| 1164 o->print(); | |
| 1165 #endif | |
| 1166 assert(0); | |
| 1167 } | |
| 1168 if (!sc->insert(s)) | |
| 1169 error("declaration %s is already defined", tp->ident->toChars()); | |
| 1170 s->semantic(sc); | |
| 1171 } | |
| 1172 | |
| 1173 /************************************** | |
| 1174 * Determine if TemplateDeclaration is variadic. | |
| 1175 */ | |
| 1176 | |
| 1177 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 1178 { size_t dim = parameters->dim; | |
| 1179 TemplateTupleParameter *tp = NULL; | |
| 1180 | |
| 1181 if (dim) | |
| 1182 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 1183 return tp; | |
| 1184 } | |
| 1185 | |
| 1186 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 1187 { | |
| 1188 return ::isVariadic(parameters); | |
| 1189 } | |
| 1190 | |
| 1191 /*********************************** | |
| 1192 * We can overload templates. | |
| 1193 */ | |
| 1194 | |
| 1195 int TemplateDeclaration::isOverloadable() | |
| 1196 { | |
| 1197 return 1; | |
| 1198 } | |
| 1199 | |
| 1200 /************************************************* | |
| 1201 * Given function arguments, figure out which template function | |
| 1202 * to expand, and return that function. | |
| 1203 * If no match, give error message and return NULL. | |
| 1204 * Input: | |
| 1205 * sc instantiation scope | |
| 1206 * loc instantiation location | |
| 1207 * targsi initial list of template arguments | |
|
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diff
changeset
|
1208 * ethis if !NULL, the 'this' pointer argument |
| 336 | 1209 * fargs arguments to function |
|
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changeset
|
1210 * flags 1: do not issue error message on no match, just return NULL |
| 336 | 1211 */ |
| 1212 | |
| 1213 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, | |
|
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|
1214 Objects *targsi, Expression *ethis, Expressions *fargs, int flags) |
| 336 | 1215 { |
| 1216 MATCH m_best = MATCHnomatch; | |
| 1217 TemplateDeclaration *td_ambig = NULL; | |
| 1218 TemplateDeclaration *td_best = NULL; | |
| 1219 Objects *tdargs = new Objects(); | |
| 1220 TemplateInstance *ti; | |
| 1221 FuncDeclaration *fd; | |
| 1222 | |
| 1223 #if 0 | |
| 1224 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); | |
| 1225 printf(" targsi:\n"); | |
| 1226 if (targsi) | |
| 1227 { for (int i = 0; i < targsi->dim; i++) | |
| 1228 { Object *arg = (Object *)targsi->data[i]; | |
| 1229 printf("\t%s\n", arg->toChars()); | |
| 1230 } | |
| 1231 } | |
| 1232 printf(" fargs:\n"); | |
| 1233 for (int i = 0; i < fargs->dim; i++) | |
| 1234 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1235 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1236 //printf("\tty = %d\n", arg->type->ty); | |
| 1237 } | |
| 1238 #endif | |
| 1239 | |
| 1240 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1241 { | |
| 1242 if (!td->scope) | |
| 1243 { | |
| 1244 error("forward reference to template %s", td->toChars()); | |
| 1245 goto Lerror; | |
| 1246 } | |
| 1247 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1248 { | |
| 1249 error("is not a function template"); | |
| 1250 goto Lerror; | |
| 1251 } | |
| 1252 | |
| 1253 MATCH m; | |
| 1254 Objects dedargs; | |
| 1255 | |
|
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|
1256 m = td->deduceFunctionTemplateMatch(loc, targsi, ethis, fargs, &dedargs); |
| 336 | 1257 //printf("deduceFunctionTemplateMatch = %d\n", m); |
| 1258 if (!m) // if no match | |
| 1259 continue; | |
| 1260 | |
| 1261 if (m < m_best) | |
| 1262 goto Ltd_best; | |
| 1263 if (m > m_best) | |
| 1264 goto Ltd; | |
| 1265 | |
| 1266 { | |
| 1267 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1268 int c1 = td->leastAsSpecialized(td_best); | |
| 1269 int c2 = td_best->leastAsSpecialized(td); | |
| 1270 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1271 | |
| 1272 if (c1 > c2) | |
| 1273 goto Ltd; | |
| 1274 else if (c1 < c2) | |
| 1275 goto Ltd_best; | |
| 1276 else | |
| 1277 goto Lambig; | |
| 1278 } | |
| 1279 | |
| 1280 Lambig: // td_best and td are ambiguous | |
| 1281 td_ambig = td; | |
| 1282 continue; | |
| 1283 | |
| 1284 Ltd_best: // td_best is the best match so far | |
| 1285 td_ambig = NULL; | |
| 1286 continue; | |
| 1287 | |
| 1288 Ltd: // td is the new best match | |
| 1289 td_ambig = NULL; | |
| 1290 assert((size_t)td->scope > 0x10000); | |
| 1291 td_best = td; | |
| 1292 m_best = m; | |
| 1293 tdargs->setDim(dedargs.dim); | |
| 1294 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1295 continue; | |
| 1296 } | |
| 1297 if (!td_best) | |
| 1298 { | |
| 1299 error(loc, "does not match any template declaration"); | |
| 1300 goto Lerror; | |
| 1301 } | |
| 1302 if (td_ambig) | |
| 1303 { | |
|
1103
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- Updated to DMD frontend 1.041.
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diff
changeset
|
1304 error(loc, "matches more than one function template declaration:\n %s\nand:\n %s", |
|
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- Updated to DMD frontend 1.041.
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diff
changeset
|
1305 td_best->toChars(), td_ambig->toChars()); |
| 336 | 1306 } |
| 1307 | |
| 1308 /* The best match is td_best with arguments tdargs. | |
| 1309 * Now instantiate the template. | |
| 1310 */ | |
| 1311 assert((size_t)td_best->scope > 0x10000); | |
| 1312 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1313 ti->semantic(sc); | |
| 1314 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1315 if (!fd) | |
| 1316 goto Lerror; | |
| 1317 return fd; | |
| 1318 | |
| 1319 Lerror: | |
| 1320 { | |
|
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|
1321 HdrGenState hgs; |
|
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|
1322 |
|
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|
1323 OutBuffer bufa; |
|
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|
1324 Objects *args = targsi; |
|
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|
1325 if (args) |
|
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diff
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|
1326 { for (int i = 0; i < args->dim; i++) |
|
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|
1327 { |
|
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|
1328 if (i) |
|
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Merged DMD 1.038
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diff
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|
1329 bufa.writeByte(','); |
|
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Merged DMD 1.038
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|
1330 Object *oarg = (Object *)args->data[i]; |
|
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|
1331 ObjectToCBuffer(&bufa, &hgs, oarg); |
|
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|
1332 } |
|
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|
1333 } |
|
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|
1334 |
| 336 | 1335 OutBuffer buf; |
| 1336 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
|
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|
1337 error(loc, "cannot deduce template function from argument types !(%s)(%s)", |
|
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|
1338 bufa.toChars(), buf.toChars()); |
| 336 | 1339 } |
|
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|
1340 return NULL; |
| 336 | 1341 } |
| 1342 | |
| 1343 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1344 { | |
| 1345 #if 0 // Should handle template functions | |
| 1346 if (onemember && onemember->isFuncDeclaration()) | |
| 1347 buf->writestring("foo "); | |
| 1348 #endif | |
| 1349 buf->writestring(kind()); | |
| 1350 buf->writeByte(' '); | |
| 1351 buf->writestring(ident->toChars()); | |
| 1352 buf->writeByte('('); | |
| 1353 for (int i = 0; i < parameters->dim; i++) | |
| 1354 { | |
| 1355 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1356 if (hgs->ddoc) | |
| 1357 tp = (TemplateParameter *)origParameters->data[i]; | |
| 1358 if (i) | |
| 1359 buf->writeByte(','); | |
| 1360 tp->toCBuffer(buf, hgs); | |
| 1361 } | |
| 1362 buf->writeByte(')'); | |
|
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1363 #if DMDV2 |
|
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|
1364 if (constraint) |
|
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|
1365 { buf->writestring(" if ("); |
|
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|
1366 constraint->toCBuffer(buf, hgs); |
|
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|
1367 buf->writeByte(')'); |
|
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|
1368 } |
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|
1369 #endif |
| 336 | 1370 |
| 1371 if (hgs->hdrgen) | |
| 1372 { | |
| 1373 hgs->tpltMember++; | |
| 1374 buf->writenl(); | |
| 1375 buf->writebyte('{'); | |
| 1376 buf->writenl(); | |
| 1377 for (int i = 0; i < members->dim; i++) | |
| 1378 { | |
| 1379 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1380 s->toCBuffer(buf, hgs); | |
| 1381 } | |
| 1382 buf->writebyte('}'); | |
| 1383 buf->writenl(); | |
| 1384 hgs->tpltMember--; | |
| 1385 } | |
| 1386 } | |
| 1387 | |
| 1388 | |
| 1389 char *TemplateDeclaration::toChars() | |
| 1390 { OutBuffer buf; | |
| 1391 HdrGenState hgs; | |
| 1392 | |
| 1393 memset(&hgs, 0, sizeof(hgs)); | |
| 1394 buf.writestring(ident->toChars()); | |
| 1395 buf.writeByte('('); | |
| 1396 for (int i = 0; i < parameters->dim; i++) | |
| 1397 { | |
| 1398 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1399 if (i) | |
| 1400 buf.writeByte(','); | |
| 1401 tp->toCBuffer(&buf, &hgs); | |
| 1402 } | |
| 1403 buf.writeByte(')'); | |
|
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diff
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|
1404 #if DMDV2 |
|
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|
1405 if (constraint) |
|
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Merged DMD 1.038
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diff
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|
1406 { buf.writestring(" if ("); |
|
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Merged DMD 1.038
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diff
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|
1407 constraint->toCBuffer(&buf, &hgs); |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
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|
1408 buf.writeByte(')'); |
|
330f999ade44
Merged DMD 1.038
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diff
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|
1409 } |
|
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Merged DMD 1.038
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diff
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|
1410 #endif |
| 336 | 1411 buf.writeByte(0); |
| 1412 return (char *)buf.extractData(); | |
| 1413 } | |
| 1414 | |
| 1415 /* ======================== Type ============================================ */ | |
| 1416 | |
| 1417 /**** | |
| 1418 * Given an identifier, figure out which TemplateParameter it is. | |
| 1419 * Return -1 if not found. | |
| 1420 */ | |
| 1421 | |
| 1422 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) | |
| 1423 { | |
| 1424 for (size_t i = 0; i < parameters->dim; i++) | |
| 1425 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1426 | |
| 1427 if (tp->ident->equals(id)) | |
| 1428 return i; | |
| 1429 } | |
| 1430 return -1; | |
| 1431 } | |
| 1432 | |
| 1433 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) | |
| 1434 { | |
| 1435 assert(tparam->ty == Tident); | |
| 1436 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1437 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1438 if (tident->idents.dim == 0) | |
| 1439 { | |
| 1440 return templateIdentifierLookup(tident->ident, parameters); | |
| 1441 } | |
| 1442 return -1; | |
| 1443 } | |
| 1444 | |
| 1445 /* These form the heart of template argument deduction. | |
| 1446 * Given 'this' being the type argument to the template instance, | |
| 1447 * it is matched against the template declaration parameter specialization | |
| 1448 * 'tparam' to determine the type to be used for the parameter. | |
| 1449 * Example: | |
| 1450 * template Foo(T:T*) // template declaration | |
| 1451 * Foo!(int*) // template instantiation | |
| 1452 * Input: | |
| 1453 * this = int* | |
| 1454 * tparam = T | |
| 1455 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1456 * Output: | |
| 1457 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1458 */ | |
| 1459 | |
| 1460 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1461 Objects *dedtypes) | |
| 1462 { | |
|
875
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Merged DMD 1.038
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diff
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|
1463 #if 0 |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
1464 printf("Type::deduceType()\n"); |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
1465 printf("\tthis = %d, ", ty); print(); |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
1466 printf("\ttparam = %d, ", tparam->ty); tparam->print(); |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
1467 #endif |
| 336 | 1468 if (!tparam) |
| 1469 goto Lnomatch; | |
| 1470 | |
| 1471 if (this == tparam) | |
| 1472 goto Lexact; | |
| 1473 | |
| 1474 if (tparam->ty == Tident) | |
| 1475 { | |
| 1476 // Determine which parameter tparam is | |
| 1477 int i = templateParameterLookup(tparam, parameters); | |
| 1478 if (i == -1) | |
| 1479 { | |
| 1480 if (!sc) | |
| 1481 goto Lnomatch; | |
| 1482 | |
| 1483 /* Need a loc to go with the semantic routine. | |
| 1484 */ | |
| 1485 Loc loc; | |
| 1486 if (parameters->dim) | |
| 1487 { | |
| 1488 TemplateParameter *tp = (TemplateParameter *)parameters->data[0]; | |
| 1489 loc = tp->loc; | |
| 1490 } | |
| 1491 | |
| 1492 /* BUG: what if tparam is a template instance, that | |
| 1493 * has as an argument another Tident? | |
| 1494 */ | |
| 1495 tparam = tparam->semantic(loc, sc); | |
| 1496 assert(tparam->ty != Tident); | |
| 1497 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1498 } | |
| 1499 | |
| 1500 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1501 | |
| 1502 // Found the corresponding parameter tp | |
| 1503 if (!tp->isTemplateTypeParameter()) | |
| 1504 goto Lnomatch; | |
| 1505 Type *at = (Type *)dedtypes->data[i]; | |
| 1506 if (!at) | |
| 1507 { | |
| 1508 dedtypes->data[i] = (void *)this; | |
| 1509 goto Lexact; | |
| 1510 } | |
| 1511 if (equals(at)) | |
| 1512 goto Lexact; | |
| 1513 else if (ty == Tclass && at->ty == Tclass) | |
| 1514 { | |
| 1515 return (MATCH) implicitConvTo(at); | |
| 1516 } | |
| 1517 else if (ty == Tsarray && at->ty == Tarray && | |
| 1518 nextOf()->equals(at->nextOf())) | |
| 1519 { | |
| 1520 goto Lexact; | |
| 1521 } | |
| 1522 else | |
| 1523 goto Lnomatch; | |
| 1524 } | |
| 1525 | |
| 1526 if (ty != tparam->ty) | |
| 1527 return implicitConvTo(tparam); | |
| 1528 // goto Lnomatch; | |
| 1529 | |
| 1530 if (nextOf()) | |
| 1531 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1532 | |
| 1533 Lexact: | |
| 1534 return MATCHexact; | |
| 1535 | |
| 1536 Lnomatch: | |
| 1537 return MATCHnomatch; | |
| 1538 } | |
| 1539 | |
| 1540 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1541 Objects *dedtypes) | |
| 1542 { | |
| 1543 #if 0 | |
| 1544 printf("TypeSArray::deduceType()\n"); | |
| 1545 printf("\tthis = %d, ", ty); print(); | |
| 1546 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1547 #endif | |
| 1548 | |
| 1549 // Extra check that array dimensions must match | |
| 1550 if (tparam) | |
| 1551 { | |
| 1552 if (tparam->ty == Tsarray) | |
| 1553 { | |
| 1554 TypeSArray *tp = (TypeSArray *)tparam; | |
| 1555 | |
| 1556 if (tp->dim->op == TOKvar && | |
| 1557 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1558 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1559 // This code matches code in TypeInstance::deduceType() | |
| 1560 if (i == -1) | |
| 1561 goto Lnomatch; | |
| 1562 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1563 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1564 if (!tvp) | |
| 1565 goto Lnomatch; | |
| 1566 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1567 if (e) | |
| 1568 { | |
| 1569 if (!dim->equals(e)) | |
| 1570 goto Lnomatch; | |
| 1571 } | |
| 1572 else | |
| 1573 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1574 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1575 if (!m) | |
| 1576 goto Lnomatch; | |
| 1577 dedtypes->data[i] = dim; | |
| 1578 } | |
| 1579 } | |
| 1580 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1581 return MATCHnomatch; | |
| 1582 } | |
| 1583 else if (tparam->ty == Taarray) | |
| 1584 { | |
| 1585 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1586 if (tp->index->ty == Tident) | |
| 1587 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1588 | |
| 1589 if (tident->idents.dim == 0) | |
| 1590 { Identifier *id = tident->ident; | |
| 1591 | |
| 1592 for (size_t i = 0; i < parameters->dim; i++) | |
| 1593 { | |
| 1594 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1595 | |
| 1596 if (tp->ident->equals(id)) | |
| 1597 { // Found the corresponding template parameter | |
| 1598 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1599 if (!tvp || !tvp->valType->isintegral()) | |
| 1600 goto Lnomatch; | |
| 1601 | |
| 1602 if (dedtypes->data[i]) | |
| 1603 { | |
| 1604 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1605 goto Lnomatch; | |
| 1606 } | |
| 1607 else | |
| 1608 { dedtypes->data[i] = (void *)dim; | |
| 1609 } | |
| 1610 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1611 } | |
| 1612 } | |
| 1613 } | |
| 1614 } | |
| 1615 } | |
| 1616 else if (tparam->ty == Tarray) | |
| 1617 { MATCH m; | |
| 1618 | |
| 1619 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1620 if (m == MATCHexact) | |
| 1621 m = MATCHconvert; | |
| 1622 return m; | |
| 1623 } | |
| 1624 } | |
| 1625 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1626 | |
| 1627 Lnomatch: | |
| 1628 return MATCHnomatch; | |
| 1629 } | |
| 1630 | |
| 1631 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1632 { | |
| 1633 #if 0 | |
| 1634 printf("TypeAArray::deduceType()\n"); | |
| 1635 printf("\tthis = %d, ", ty); print(); | |
| 1636 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1637 #endif | |
| 1638 | |
| 1639 // Extra check that index type must match | |
| 1640 if (tparam && tparam->ty == Taarray) | |
| 1641 { | |
| 1642 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1643 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1644 { | |
| 1645 return MATCHnomatch; | |
| 1646 } | |
| 1647 } | |
| 1648 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1649 } | |
| 1650 | |
| 1651 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1652 { | |
| 1653 //printf("TypeFunction::deduceType()\n"); | |
| 1654 //printf("\tthis = %d, ", ty); print(); | |
| 1655 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1656 | |
| 1657 // Extra check that function characteristics must match | |
| 1658 if (tparam && tparam->ty == Tfunction) | |
| 1659 { | |
| 1660 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1661 if (varargs != tp->varargs || | |
| 1662 linkage != tp->linkage) | |
| 1663 return MATCHnomatch; | |
| 1664 | |
| 1665 size_t nfargs = Argument::dim(this->parameters); | |
| 1666 size_t nfparams = Argument::dim(tp->parameters); | |
| 1667 | |
| 1668 /* See if tuple match | |
| 1669 */ | |
| 1670 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1671 { | |
| 1672 /* See if 'A' of the template parameter matches 'A' | |
| 1673 * of the type of the last function parameter. | |
| 1674 */ | |
| 1675 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1676 if (fparam->type->ty != Tident) | |
| 1677 goto L1; | |
| 1678 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1679 if (tid->idents.dim) | |
| 1680 goto L1; | |
| 1681 | |
| 1682 /* Look through parameters to find tuple matching tid->ident | |
| 1683 */ | |
| 1684 size_t tupi = 0; | |
| 1685 for (; 1; tupi++) | |
| 1686 { if (tupi == parameters->dim) | |
| 1687 goto L1; | |
| 1688 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1689 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1690 if (tup && tup->ident->equals(tid->ident)) | |
| 1691 break; | |
| 1692 } | |
| 1693 | |
| 1694 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1695 * now form the tuple argument. | |
| 1696 */ | |
| 1697 int tuple_dim = nfargs - (nfparams - 1); | |
| 1698 | |
| 1699 /* See if existing tuple, and whether it matches or not | |
| 1700 */ | |
| 1701 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1702 if (o) | |
| 1703 { // Existing deduced argument must be a tuple, and must match | |
| 1704 Tuple *t = isTuple(o); | |
| 1705 if (!t || t->objects.dim != tuple_dim) | |
| 1706 return MATCHnomatch; | |
| 1707 for (size_t i = 0; i < tuple_dim; i++) | |
| 1708 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1709 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1710 return MATCHnomatch; | |
| 1711 } | |
| 1712 } | |
| 1713 else | |
| 1714 { // Create new tuple | |
| 1715 Tuple *t = new Tuple(); | |
| 1716 t->objects.setDim(tuple_dim); | |
| 1717 for (size_t i = 0; i < tuple_dim; i++) | |
| 1718 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1719 t->objects.data[i] = (void *)arg->type; | |
| 1720 } | |
| 1721 dedtypes->data[tupi] = (void *)t; | |
| 1722 } | |
| 1723 nfparams--; // don't consider the last parameter for type deduction | |
| 1724 goto L2; | |
| 1725 } | |
| 1726 | |
| 1727 L1: | |
| 1728 if (nfargs != nfparams) | |
| 1729 return MATCHnomatch; | |
| 1730 L2: | |
| 1731 for (size_t i = 0; i < nfparams; i++) | |
| 1732 { | |
| 1733 Argument *a = Argument::getNth(this->parameters, i); | |
| 1734 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1735 if (a->storageClass != ap->storageClass || | |
| 1736 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1737 return MATCHnomatch; | |
| 1738 } | |
| 1739 } | |
| 1740 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1741 } | |
| 1742 | |
| 1743 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1744 { | |
| 1745 // Extra check | |
| 1746 if (tparam && tparam->ty == Tident) | |
| 1747 { | |
| 1748 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1749 | |
| 1750 for (int i = 0; i < idents.dim; i++) | |
| 1751 { | |
| 1752 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1753 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1754 | |
| 1755 if (!id1->equals(id2)) | |
| 1756 return MATCHnomatch; | |
| 1757 } | |
| 1758 } | |
| 1759 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1760 } | |
| 1761 | |
| 1762 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1763 Type *tparam, TemplateParameters *parameters, | |
| 1764 Objects *dedtypes) | |
| 1765 { | |
| 1766 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1767 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1768 | |
| 1769 // Extra check | |
| 1770 if (tparam && tparam->ty == Tinstance) | |
| 1771 { | |
| 1772 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1773 | |
| 1774 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1775 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1776 if (!tp->tempinst->tempdecl) | |
| 1777 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); | |
| 1778 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1779 { | |
| 1780 /* Handle case of: | |
| 1781 * template Foo(T : sa!(T), alias sa) | |
| 1782 */ | |
| 1783 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1784 if (i == -1) | |
| 1785 { /* Didn't find it as a parameter identifier. Try looking | |
| 1786 * it up and seeing if is an alias. See Bugzilla 1454 | |
| 1787 */ | |
| 1788 Dsymbol *s = tempinst->tempdecl->scope->search(0, tp->tempinst->name, NULL); | |
| 1789 if (s) | |
| 1790 { | |
| 1791 s = s->toAlias(); | |
| 1792 TemplateDeclaration *td = s->isTemplateDeclaration(); | |
| 1793 if (td && td == tempinst->tempdecl) | |
| 1794 goto L2; | |
| 1795 } | |
| 1796 goto Lnomatch; | |
| 1797 } | |
| 1798 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; | |
| 1799 // This logic duplicates tpx->matchArg() | |
| 1800 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1801 if (!ta) | |
| 1802 goto Lnomatch; | |
| 1803 Dsymbol *sa = tempinst->tempdecl; | |
| 1804 if (!sa) | |
| 1805 goto Lnomatch; | |
| 1806 if (ta->specAlias && sa != ta->specAlias) | |
| 1807 goto Lnomatch; | |
| 1808 if (dedtypes->data[i]) | |
| 1809 { // Must match already deduced symbol | |
| 1810 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1811 | |
| 1812 if (s != sa) | |
| 1813 goto Lnomatch; | |
| 1814 } | |
| 1815 dedtypes->data[i] = sa; | |
| 1816 } | |
| 1817 } | |
| 1818 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1819 goto Lnomatch; | |
| 1820 | |
| 1821 L2: | |
| 1822 if (tempinst->tiargs->dim != tp->tempinst->tiargs->dim) | |
| 1823 goto Lnomatch; | |
| 1824 | |
| 1825 for (int i = 0; i < tempinst->tiargs->dim; i++) | |
| 1826 { | |
| 1827 //printf("\ttest: tempinst->tiargs[%d]\n", i); | |
| 1828 int j; | |
| 1829 Object *o1 = (Object *)tempinst->tiargs->data[i]; | |
| 1830 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1831 | |
| 1832 Type *t1 = isType(o1); | |
| 1833 Type *t2 = isType(o2); | |
| 1834 | |
| 1835 Expression *e1 = isExpression(o1); | |
| 1836 Expression *e2 = isExpression(o2); | |
| 1837 | |
|
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1838 Dsymbol *s1 = isDsymbol(o1); |
|
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1839 Dsymbol *s2 = isDsymbol(o2); |
|
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1840 |
|
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1841 Tuple *v1 = isTuple(o1); |
|
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1842 Tuple *v2 = isTuple(o2); |
| 336 | 1843 #if 0 |
| 1844 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1845 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1846 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1847 if (e2) printf("e2 = %s\n", e2->toChars()); | |
|
1103
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|
1848 if (s1) printf("s1 = %s\n", s1->toChars()); |
|
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1849 if (s2) printf("s2 = %s\n", s2->toChars()); |
|
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|
1850 if (v1) printf("v1 = %s\n", v1->toChars()); |
|
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|
1851 if (v2) printf("v2 = %s\n", v2->toChars()); |
| 336 | 1852 #endif |
| 1853 | |
| 1854 if (t1 && t2) | |
| 1855 { | |
| 1856 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1857 goto Lnomatch; | |
| 1858 } | |
| 1859 else if (e1 && e2) | |
| 1860 { | |
| 1861 if (!e1->equals(e2)) | |
| 1862 { if (e2->op == TOKvar) | |
| 1863 { | |
| 1864 /* | |
| 1865 * (T:Number!(e2), int e2) | |
| 1866 */ | |
| 1867 j = templateIdentifierLookup(((VarExp *)e2)->var->ident, parameters); | |
| 1868 goto L1; | |
| 1869 } | |
| 1870 goto Lnomatch; | |
| 1871 } | |
| 1872 } | |
| 1873 else if (e1 && t2 && t2->ty == Tident) | |
| 1874 { | |
| 1875 j = templateParameterLookup(t2, parameters); | |
| 1876 L1: | |
| 1877 if (j == -1) | |
| 1878 goto Lnomatch; | |
| 1879 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; | |
| 1880 // BUG: use tp->matchArg() instead of the following | |
| 1881 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1882 if (!tv) | |
| 1883 goto Lnomatch; | |
| 1884 Expression *e = (Expression *)dedtypes->data[j]; | |
| 1885 if (e) | |
| 1886 { | |
| 1887 if (!e1->equals(e)) | |
| 1888 goto Lnomatch; | |
| 1889 } | |
| 1890 else | |
| 1891 { Type *vt = tv->valType->semantic(0, sc); | |
| 1892 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1893 if (!m) | |
| 1894 goto Lnomatch; | |
| 1895 dedtypes->data[j] = e1; | |
| 1896 } | |
| 1897 } | |
|
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1898 else if (s1 && t2 && t2->ty == Tident) |
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1899 { |
|
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1900 j = templateParameterLookup(t2, parameters); |
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|
1901 if (j == -1) |
|
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|
1902 goto Lnomatch; |
|
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|
1903 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; |
|
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- Updated to DMD frontend 1.041.
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|
1904 // BUG: use tp->matchArg() instead of the following |
|
b30fe7e1dbb9
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|
1905 TemplateAliasParameter *ta = tp->isTemplateAliasParameter(); |
|
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- Updated to DMD frontend 1.041.
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|
1906 if (!ta) |
|
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1907 goto Lnomatch; |
|
b30fe7e1dbb9
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|
1908 Dsymbol *s = (Dsymbol *)dedtypes->data[j]; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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changeset
|
1909 if (s) |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
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diff
changeset
|
1910 { |
|
b30fe7e1dbb9
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parents:
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|
1911 if (!s1->equals(s)) |
|
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|
1912 goto Lnomatch; |
|
b30fe7e1dbb9
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|
1913 } |
|
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1914 else |
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|
1915 { |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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|
1916 dedtypes->data[j] = s1; |
|
b30fe7e1dbb9
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|
1917 } |
|
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1918 } |
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|
1919 else if (s1 && s2) |
|
b30fe7e1dbb9
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|
1920 { |
|
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|
1921 if (!s1->equals(s2)) |
|
b30fe7e1dbb9
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|
1922 goto Lnomatch; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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|
1923 } |
|
b30fe7e1dbb9
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|
1924 // BUG: Need to handle tuple parameters |
| 336 | 1925 else |
| 1926 goto Lnomatch; | |
| 1927 } | |
| 1928 } | |
| 1929 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1930 | |
| 1931 Lnomatch: | |
| 1932 return MATCHnomatch; | |
| 1933 } | |
| 1934 | |
| 1935 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1936 { | |
| 1937 //printf("TypeStruct::deduceType()\n"); | |
| 1938 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1939 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1940 | |
| 1941 /* If this struct is a template struct, and we're matching | |
| 1942 * it against a template instance, convert the struct type | |
| 1943 * to a template instance, too, and try again. | |
| 1944 */ | |
| 1945 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1946 | |
| 1947 if (tparam && tparam->ty == Tinstance) | |
| 1948 { | |
| 1949 if (ti && ti->toAlias() == sym) | |
| 1950 { | |
| 1951 TypeInstance *t = new TypeInstance(0, ti); | |
| 1952 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1953 } | |
| 1954 | |
| 1955 /* Match things like: | |
| 1956 * S!(T).foo | |
| 1957 */ | |
| 1958 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1959 if (tpi->idents.dim) | |
| 1960 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1961 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1962 { | |
| 1963 Type *tparent = sym->parent->getType(); | |
| 1964 if (tparent) | |
| 1965 { | |
| 1966 /* Slice off the .foo in S!(T).foo | |
| 1967 */ | |
| 1968 tpi->idents.dim--; | |
| 1969 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1970 tpi->idents.dim++; | |
| 1971 return m; | |
| 1972 } | |
| 1973 } | |
| 1974 } | |
| 1975 } | |
| 1976 | |
| 1977 // Extra check | |
| 1978 if (tparam && tparam->ty == Tstruct) | |
| 1979 { | |
| 1980 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1981 | |
| 1982 if (sym != tp->sym) | |
| 1983 return MATCHnomatch; | |
| 1984 } | |
| 1985 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1986 } | |
| 1987 | |
| 1988 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1989 { | |
| 1990 // Extra check | |
| 1991 if (tparam && tparam->ty == Tenum) | |
| 1992 { | |
| 1993 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1994 | |
| 1995 if (sym != tp->sym) | |
| 1996 return MATCHnomatch; | |
| 1997 } | |
| 1998 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1999 } | |
| 2000 | |
| 2001 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 2002 { | |
| 2003 // Extra check | |
| 2004 if (tparam && tparam->ty == Ttypedef) | |
| 2005 { | |
| 2006 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 2007 | |
| 2008 if (sym != tp->sym) | |
| 2009 return MATCHnomatch; | |
| 2010 } | |
| 2011 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2012 } | |
| 2013 | |
| 2014 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 2015 { | |
| 2016 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 2017 | |
| 2018 /* If this class is a template class, and we're matching | |
| 2019 * it against a template instance, convert the class type | |
| 2020 * to a template instance, too, and try again. | |
| 2021 */ | |
| 2022 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 2023 | |
| 2024 if (tparam && tparam->ty == Tinstance) | |
| 2025 { | |
| 2026 if (ti && ti->toAlias() == sym) | |
| 2027 { | |
| 2028 TypeInstance *t = new TypeInstance(0, ti); | |
| 2029 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 2030 } | |
| 2031 | |
| 2032 /* Match things like: | |
| 2033 * S!(T).foo | |
| 2034 */ | |
| 2035 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 2036 if (tpi->idents.dim) | |
| 2037 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 2038 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 2039 { | |
| 2040 Type *tparent = sym->parent->getType(); | |
| 2041 if (tparent) | |
| 2042 { | |
| 2043 /* Slice off the .foo in S!(T).foo | |
| 2044 */ | |
| 2045 tpi->idents.dim--; | |
| 2046 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 2047 tpi->idents.dim++; | |
| 2048 return m; | |
| 2049 } | |
| 2050 } | |
| 2051 } | |
| 2052 } | |
| 2053 | |
| 2054 // Extra check | |
| 2055 if (tparam && tparam->ty == Tclass) | |
| 2056 { | |
| 2057 TypeClass *tp = (TypeClass *)tparam; | |
| 2058 | |
| 2059 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 2060 return (MATCH) implicitConvTo(tp); | |
| 2061 } | |
| 2062 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2063 } | |
| 2064 | |
| 2065 /* ======================== TemplateParameter =============================== */ | |
| 2066 | |
| 2067 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 2068 { | |
| 2069 this->loc = loc; | |
| 2070 this->ident = ident; | |
| 2071 this->sparam = NULL; | |
| 2072 } | |
| 2073 | |
| 2074 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 2075 { | |
| 2076 return NULL; | |
| 2077 } | |
| 2078 | |
| 2079 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 2080 { | |
| 2081 return NULL; | |
| 2082 } | |
| 2083 | |
| 2084 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 2085 { | |
| 2086 return NULL; | |
| 2087 } | |
| 2088 | |
| 2089 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 2090 { | |
| 2091 return NULL; | |
| 2092 } | |
| 2093 | |
| 2094 #if DMDV2 | |
| 2095 TemplateThisParameter *TemplateParameter::isTemplateThisParameter() | |
| 2096 { | |
| 2097 return NULL; | |
| 2098 } | |
| 2099 #endif | |
| 2100 | |
| 2101 /* ======================== TemplateTypeParameter =========================== */ | |
| 2102 | |
| 2103 // type-parameter | |
| 2104 | |
| 2105 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 2106 Type *defaultType) | |
| 2107 : TemplateParameter(loc, ident) | |
| 2108 { | |
| 2109 this->ident = ident; | |
| 2110 this->specType = specType; | |
| 2111 this->defaultType = defaultType; | |
| 2112 } | |
| 2113 | |
| 2114 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 2115 { | |
| 2116 return this; | |
| 2117 } | |
| 2118 | |
| 2119 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 2120 { | |
| 2121 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 2122 if (tp->specType) | |
| 2123 tp->specType = specType->syntaxCopy(); | |
| 2124 if (defaultType) | |
| 2125 tp->defaultType = defaultType->syntaxCopy(); | |
| 2126 return tp; | |
| 2127 } | |
| 2128 | |
| 2129 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 2130 { | |
| 2131 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 2132 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2133 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2134 if (!sc->insert(sparam)) | |
| 2135 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2136 } | |
| 2137 | |
| 2138 void TemplateTypeParameter::semantic(Scope *sc) | |
| 2139 { | |
| 2140 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 2141 if (specType) | |
| 2142 { | |
| 2143 specType = specType->semantic(loc, sc); | |
| 2144 } | |
| 2145 #if 0 // Don't do semantic() until instantiation | |
| 2146 if (defaultType) | |
| 2147 { | |
| 2148 defaultType = defaultType->semantic(loc, sc); | |
| 2149 } | |
| 2150 #endif | |
| 2151 } | |
| 2152 | |
| 2153 /**************************************** | |
| 2154 * Determine if two TemplateParameters are the same | |
| 2155 * as far as TemplateDeclaration overloading goes. | |
| 2156 * Returns: | |
| 2157 * 1 match | |
| 2158 * 0 no match | |
| 2159 */ | |
| 2160 | |
| 2161 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 2162 { | |
| 2163 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 2164 | |
| 2165 if (ttp) | |
| 2166 { | |
| 2167 if (specType != ttp->specType) | |
| 2168 goto Lnomatch; | |
| 2169 | |
| 2170 if (specType && !specType->equals(ttp->specType)) | |
| 2171 goto Lnomatch; | |
| 2172 | |
| 2173 return 1; // match | |
| 2174 } | |
| 2175 | |
| 2176 Lnomatch: | |
| 2177 return 0; | |
| 2178 } | |
| 2179 | |
| 2180 /******************************************* | |
| 2181 * Match to a particular TemplateParameter. | |
| 2182 * Input: | |
| 2183 * i i'th argument | |
| 2184 * tiargs[] actual arguments to template instance | |
| 2185 * parameters[] template parameters | |
| 2186 * dedtypes[] deduced arguments to template instance | |
| 2187 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 2188 */ | |
| 2189 | |
| 2190 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 2191 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
|
2192 Declaration **psparam, int flags) |
| 336 | 2193 { |
| 2194 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 2195 Type *t; | |
| 2196 Object *oarg; | |
| 2197 MATCH m = MATCHexact; | |
| 2198 Type *ta; | |
| 2199 | |
| 2200 if (i < tiargs->dim) | |
| 2201 oarg = (Object *)tiargs->data[i]; | |
| 2202 else | |
| 2203 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2204 oarg = defaultArg(loc, sc); |
| 336 | 2205 if (!oarg) |
| 2206 { assert(i < dedtypes->dim); | |
| 2207 // It might have already been deduced | |
| 2208 oarg = (Object *)dedtypes->data[i]; | |
| 2209 if (!oarg) | |
| 2210 goto Lnomatch; | |
| 2211 } | |
| 2212 } | |
| 2213 | |
| 2214 ta = isType(oarg); | |
| 2215 if (!ta) | |
| 2216 goto Lnomatch; | |
| 2217 //printf("ta is %s\n", ta->toChars()); | |
| 2218 | |
| 2219 t = (Type *)dedtypes->data[i]; | |
| 2220 | |
| 2221 if (specType) | |
| 2222 { | |
| 2223 //printf("\tcalling deduceType(): ta is %s, specType is %s\n", ta->toChars(), specType->toChars()); | |
| 2224 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 2225 if (m2 == MATCHnomatch) | |
| 2226 { //printf("\tfailed deduceType\n"); | |
| 2227 goto Lnomatch; | |
| 2228 } | |
| 2229 | |
| 2230 if (m2 < m) | |
| 2231 m = m2; | |
| 2232 t = (Type *)dedtypes->data[i]; | |
| 2233 } | |
| 2234 else | |
| 2235 { | |
| 2236 // So that matches with specializations are better | |
| 2237 m = MATCHconvert; | |
| 2238 if (t) | |
| 2239 { // Must match already deduced type | |
| 2240 | |
| 2241 m = MATCHexact; | |
| 2242 if (!t->equals(ta)) | |
| 2243 { //printf("t = %s ta = %s\n", t->toChars(), ta->toChars()); | |
| 2244 goto Lnomatch; | |
| 2245 } | |
| 2246 } | |
| 2247 } | |
| 2248 | |
| 2249 if (!t) | |
| 2250 { | |
| 2251 dedtypes->data[i] = ta; | |
| 2252 t = ta; | |
| 2253 } | |
| 2254 *psparam = new AliasDeclaration(loc, ident, t); | |
| 2255 //printf("\tm = %d\n", m); | |
| 2256 return m; | |
| 2257 | |
| 2258 Lnomatch: | |
| 2259 *psparam = NULL; | |
| 2260 //printf("\tm = %d\n", MATCHnomatch); | |
| 2261 return MATCHnomatch; | |
| 2262 } | |
| 2263 | |
| 2264 | |
| 2265 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 2266 { | |
| 2267 printf(" %s\n", ident->toChars()); | |
| 2268 | |
| 2269 Type *t = isType(oarg); | |
| 2270 Type *ta = isType(oded); | |
| 2271 | |
| 2272 assert(ta); | |
| 2273 | |
| 2274 if (specType) | |
| 2275 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 2276 if (defaultType) | |
| 2277 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 2278 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 2279 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 2280 } | |
| 2281 | |
| 2282 | |
| 2283 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2284 { | |
| 2285 buf->writestring(ident->toChars()); | |
| 2286 if (specType) | |
| 2287 { | |
| 2288 buf->writestring(" : "); | |
| 2289 specType->toCBuffer(buf, NULL, hgs); | |
| 2290 } | |
| 2291 if (defaultType) | |
| 2292 { | |
| 2293 buf->writestring(" = "); | |
| 2294 defaultType->toCBuffer(buf, NULL, hgs); | |
| 2295 } | |
| 2296 } | |
| 2297 | |
| 2298 | |
| 2299 void *TemplateTypeParameter::dummyArg() | |
| 2300 { Type *t; | |
| 2301 | |
| 2302 if (specType) | |
| 2303 t = specType; | |
| 2304 else | |
| 2305 { // Use this for alias-parameter's too (?) | |
| 2306 t = new TypeIdentifier(loc, ident); | |
| 2307 } | |
| 2308 return (void *)t; | |
| 2309 } | |
| 2310 | |
| 2311 | |
| 2312 Object *TemplateTypeParameter::specialization() | |
| 2313 { | |
| 2314 return specType; | |
| 2315 } | |
| 2316 | |
| 2317 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2318 Object *TemplateTypeParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2319 { |
| 2320 Type *t; | |
| 2321 | |
| 2322 t = defaultType; | |
| 2323 if (t) | |
| 2324 { | |
| 2325 t = t->syntaxCopy(); | |
| 2326 t = t->semantic(loc, sc); | |
| 2327 } | |
| 2328 return t; | |
| 2329 } | |
| 2330 | |
| 2331 /* ======================== TemplateThisParameter =========================== */ | |
| 2332 | |
| 2333 #if DMDV2 | |
| 2334 // this-parameter | |
| 2335 | |
| 2336 TemplateThisParameter::TemplateThisParameter(Loc loc, Identifier *ident, | |
| 2337 Type *specType, | |
| 2338 Type *defaultType) | |
| 2339 : TemplateTypeParameter(loc, ident, specType, defaultType) | |
| 2340 { | |
| 2341 } | |
| 2342 | |
| 2343 TemplateThisParameter *TemplateThisParameter::isTemplateThisParameter() | |
| 2344 { | |
| 2345 return this; | |
| 2346 } | |
| 2347 | |
| 2348 TemplateParameter *TemplateThisParameter::syntaxCopy() | |
| 2349 { | |
| 2350 TemplateThisParameter *tp = new TemplateThisParameter(loc, ident, specType, defaultType); | |
| 2351 if (tp->specType) | |
| 2352 tp->specType = specType->syntaxCopy(); | |
| 2353 if (defaultType) | |
| 2354 tp->defaultType = defaultType->syntaxCopy(); | |
| 2355 return tp; | |
| 2356 } | |
| 2357 | |
| 2358 void TemplateThisParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2359 { | |
| 2360 buf->writestring("this "); | |
| 2361 TemplateTypeParameter::toCBuffer(buf, hgs); | |
| 2362 } | |
| 2363 #endif | |
| 2364 | |
| 2365 /* ======================== TemplateAliasParameter ========================== */ | |
| 2366 | |
| 2367 // alias-parameter | |
| 2368 | |
| 2369 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2370 | |
| 2371 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2372 : TemplateParameter(loc, ident) | |
| 2373 { | |
| 2374 this->ident = ident; | |
| 2375 this->specAliasT = specAliasT; | |
| 2376 this->defaultAlias = defaultAlias; | |
| 2377 | |
| 2378 this->specAlias = NULL; | |
| 2379 } | |
| 2380 | |
| 2381 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2382 { | |
| 2383 return this; | |
| 2384 } | |
| 2385 | |
| 2386 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2387 { | |
| 2388 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2389 if (tp->specAliasT) | |
| 2390 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2391 if (defaultAlias) | |
| 2392 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2393 return tp; | |
| 2394 } | |
| 2395 | |
| 2396 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2397 { | |
| 2398 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2399 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2400 if (!sc->insert(sparam)) | |
| 2401 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2402 } | |
| 2403 | |
| 2404 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2405 { | |
| 2406 if (specAliasT) | |
| 2407 { | |
| 2408 specAlias = specAliasT->toDsymbol(sc); | |
| 2409 if (!specAlias) | |
| 2410 error(loc, "%s is not a symbol", specAliasT->toChars()); | |
| 2411 } | |
| 2412 #if 0 // Don't do semantic() until instantiation | |
| 2413 if (defaultAlias) | |
| 2414 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2415 #endif | |
| 2416 } | |
| 2417 | |
| 2418 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2419 { | |
| 2420 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2421 | |
| 2422 if (tap) | |
| 2423 { | |
| 2424 if (specAlias != tap->specAlias) | |
| 2425 goto Lnomatch; | |
| 2426 | |
| 2427 return 1; // match | |
| 2428 } | |
| 2429 | |
| 2430 Lnomatch: | |
| 2431 return 0; | |
| 2432 } | |
| 2433 | |
| 2434 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2435 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
|
2436 Declaration **psparam, int flags) |
| 336 | 2437 { |
| 2438 Dsymbol *sa; | |
| 2439 Object *oarg; | |
| 2440 Expression *ea; | |
| 2441 | |
| 2442 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2443 | |
| 2444 if (i < tiargs->dim) | |
| 2445 oarg = (Object *)tiargs->data[i]; | |
| 2446 else | |
| 2447 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2448 oarg = defaultArg(loc, sc); |
| 336 | 2449 if (!oarg) |
| 2450 { assert(i < dedtypes->dim); | |
| 2451 // It might have already been deduced | |
| 2452 oarg = (Object *)dedtypes->data[i]; | |
| 2453 if (!oarg) | |
| 2454 goto Lnomatch; | |
| 2455 } | |
| 2456 } | |
| 2457 | |
| 2458 sa = getDsymbol(oarg); | |
| 2459 if (!sa) | |
| 2460 goto Lnomatch; | |
| 2461 | |
| 2462 if (specAlias) | |
| 2463 { | |
| 2464 if (!sa || sa == sdummy) | |
| 2465 goto Lnomatch; | |
| 2466 if (sa != specAlias) | |
| 2467 goto Lnomatch; | |
| 2468 } | |
| 2469 else if (dedtypes->data[i]) | |
| 2470 { // Must match already deduced symbol | |
| 2471 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2472 | |
| 2473 if (!sa || s != sa) | |
| 2474 goto Lnomatch; | |
| 2475 } | |
| 2476 dedtypes->data[i] = sa; | |
| 2477 | |
| 2478 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2479 return MATCHexact; | |
| 2480 | |
| 2481 Lnomatch: | |
| 2482 *psparam = NULL; | |
| 2483 return MATCHnomatch; | |
| 2484 } | |
| 2485 | |
| 2486 | |
| 2487 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2488 { | |
| 2489 printf(" %s\n", ident->toChars()); | |
| 2490 | |
| 2491 Dsymbol *sa = isDsymbol(oded); | |
| 2492 assert(sa); | |
| 2493 | |
| 2494 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2495 } | |
| 2496 | |
| 2497 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2498 { | |
| 2499 buf->writestring("alias "); | |
| 2500 buf->writestring(ident->toChars()); | |
| 2501 if (specAliasT) | |
| 2502 { | |
| 2503 buf->writestring(" : "); | |
| 2504 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2505 } | |
| 2506 if (defaultAlias) | |
| 2507 { | |
| 2508 buf->writestring(" = "); | |
| 2509 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2510 } | |
| 2511 } | |
| 2512 | |
| 2513 | |
| 2514 void *TemplateAliasParameter::dummyArg() | |
| 2515 { Dsymbol *s; | |
| 2516 | |
| 2517 s = specAlias; | |
| 2518 if (!s) | |
| 2519 { | |
| 2520 if (!sdummy) | |
| 2521 sdummy = new Dsymbol(); | |
| 2522 s = sdummy; | |
| 2523 } | |
| 2524 return (void*)s; | |
| 2525 } | |
| 2526 | |
| 2527 | |
| 2528 Object *TemplateAliasParameter::specialization() | |
| 2529 { | |
| 2530 return specAliasT; | |
| 2531 } | |
| 2532 | |
| 2533 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2534 Object *TemplateAliasParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2535 { |
| 2536 Dsymbol *s = NULL; | |
| 2537 | |
| 2538 if (defaultAlias) | |
| 2539 { | |
| 2540 s = defaultAlias->toDsymbol(sc); | |
| 2541 if (!s) | |
| 2542 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2543 } | |
| 2544 return s; | |
| 2545 } | |
| 2546 | |
| 2547 /* ======================== TemplateValueParameter ========================== */ | |
| 2548 | |
| 2549 // value-parameter | |
| 2550 | |
| 2551 Expression *TemplateValueParameter::edummy = NULL; | |
| 2552 | |
| 2553 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2554 Expression *specValue, Expression *defaultValue) | |
| 2555 : TemplateParameter(loc, ident) | |
| 2556 { | |
| 2557 this->ident = ident; | |
| 2558 this->valType = valType; | |
| 2559 this->specValue = specValue; | |
| 2560 this->defaultValue = defaultValue; | |
| 2561 } | |
| 2562 | |
| 2563 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2564 { | |
| 2565 return this; | |
| 2566 } | |
| 2567 | |
| 2568 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2569 { | |
| 2570 TemplateValueParameter *tp = | |
| 2571 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2572 tp->valType = valType->syntaxCopy(); | |
| 2573 if (specValue) | |
| 2574 tp->specValue = specValue->syntaxCopy(); | |
| 2575 if (defaultValue) | |
| 2576 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2577 return tp; | |
| 2578 } | |
| 2579 | |
| 2580 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2581 { | |
| 2582 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2583 v->storage_class = STCtemplateparameter; | |
| 2584 if (!sc->insert(v)) | |
| 2585 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2586 sparam = v; | |
| 2587 } | |
| 2588 | |
| 2589 void TemplateValueParameter::semantic(Scope *sc) | |
| 2590 { | |
| 2591 sparam->semantic(sc); | |
| 2592 valType = valType->semantic(loc, sc); | |
| 2593 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2594 valType->ty != Tident) | |
| 2595 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2596 | |
| 2597 if (specValue) | |
| 2598 { Expression *e = specValue; | |
| 2599 | |
| 2600 e = e->semantic(sc); | |
| 2601 e = e->implicitCastTo(sc, valType); | |
| 2602 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2603 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2604 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2605 specValue = e; | |
| 2606 //e->toInteger(); | |
| 2607 } | |
| 2608 | |
| 2609 #if 0 // defer semantic analysis to arg match | |
| 2610 if (defaultValue) | |
| 2611 { Expression *e = defaultValue; | |
| 2612 | |
| 2613 e = e->semantic(sc); | |
| 2614 e = e->implicitCastTo(sc, valType); | |
| 2615 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2616 if (e->op == TOKint64) | |
| 2617 defaultValue = e; | |
| 2618 //e->toInteger(); | |
| 2619 } | |
| 2620 #endif | |
| 2621 } | |
| 2622 | |
| 2623 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2624 { | |
| 2625 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2626 | |
| 2627 if (tvp) | |
| 2628 { | |
| 2629 if (valType != tvp->valType) | |
| 2630 goto Lnomatch; | |
| 2631 | |
| 2632 if (valType && !valType->equals(tvp->valType)) | |
| 2633 goto Lnomatch; | |
| 2634 | |
| 2635 if (specValue != tvp->specValue) | |
| 2636 goto Lnomatch; | |
| 2637 | |
| 2638 return 1; // match | |
| 2639 } | |
| 2640 | |
| 2641 Lnomatch: | |
| 2642 return 0; | |
| 2643 } | |
| 2644 | |
| 2645 | |
| 2646 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2647 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
|
2648 Declaration **psparam, int flags) |
| 336 | 2649 { |
| 2650 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2651 | |
| 2652 Initializer *init; | |
| 2653 Declaration *sparam; | |
| 2654 MATCH m = MATCHexact; | |
| 2655 Expression *ei; | |
| 2656 Object *oarg; | |
| 2657 | |
| 2658 if (i < tiargs->dim) | |
| 2659 oarg = (Object *)tiargs->data[i]; | |
| 2660 else | |
| 2661 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2662 oarg = defaultArg(loc, sc); |
| 336 | 2663 if (!oarg) |
| 2664 { assert(i < dedtypes->dim); | |
| 2665 // It might have already been deduced | |
| 2666 oarg = (Object *)dedtypes->data[i]; | |
| 2667 if (!oarg) | |
| 2668 goto Lnomatch; | |
| 2669 } | |
| 2670 } | |
| 2671 | |
| 2672 ei = isExpression(oarg); | |
| 2673 Type *vt; | |
| 2674 | |
| 2675 if (!ei && oarg) | |
| 2676 goto Lnomatch; | |
| 2677 | |
| 2678 if (specValue) | |
| 2679 { | |
| 2680 if (!ei || ei == edummy) | |
| 2681 goto Lnomatch; | |
| 2682 | |
| 2683 Expression *e = specValue; | |
| 2684 | |
| 2685 e = e->semantic(sc); | |
| 2686 e = e->implicitCastTo(sc, valType); | |
| 2687 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2688 | |
| 2689 ei = ei->syntaxCopy(); | |
| 2690 ei = ei->semantic(sc); | |
| 2691 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2692 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2693 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2694 if (!ei->equals(e)) | |
| 2695 goto Lnomatch; | |
| 2696 } | |
| 2697 else if (dedtypes->data[i]) | |
| 2698 { // Must match already deduced value | |
| 2699 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2700 | |
| 2701 if (!ei || !ei->equals(e)) | |
| 2702 goto Lnomatch; | |
| 2703 } | |
| 2704 Lmatch: | |
| 2705 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2706 vt = valType->semantic(0, sc); | |
| 2707 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2708 if (ei->type) | |
| 2709 { | |
| 2710 m = (MATCH)ei->implicitConvTo(vt); | |
| 2711 //printf("m: %d\n", m); | |
| 2712 if (!m) | |
| 2713 goto Lnomatch; | |
| 2714 } | |
| 2715 dedtypes->data[i] = ei; | |
| 2716 | |
| 2717 init = new ExpInitializer(loc, ei); | |
| 2718 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2719 sparam->storage_class = STCconst; | |
| 2720 *psparam = sparam; | |
| 2721 return m; | |
| 2722 | |
| 2723 Lnomatch: | |
| 2724 //printf("\tno match\n"); | |
| 2725 *psparam = NULL; | |
| 2726 return MATCHnomatch; | |
| 2727 } | |
| 2728 | |
| 2729 | |
| 2730 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2731 { | |
| 2732 printf(" %s\n", ident->toChars()); | |
| 2733 | |
| 2734 Expression *ea = isExpression(oded); | |
| 2735 | |
| 2736 if (specValue) | |
| 2737 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2738 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2739 } | |
| 2740 | |
| 2741 | |
| 2742 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2743 { | |
| 2744 valType->toCBuffer(buf, ident, hgs); | |
| 2745 if (specValue) | |
| 2746 { | |
| 2747 buf->writestring(" : "); | |
| 2748 specValue->toCBuffer(buf, hgs); | |
| 2749 } | |
| 2750 if (defaultValue) | |
| 2751 { | |
| 2752 buf->writestring(" = "); | |
| 2753 defaultValue->toCBuffer(buf, hgs); | |
| 2754 } | |
| 2755 } | |
| 2756 | |
| 2757 | |
| 2758 void *TemplateValueParameter::dummyArg() | |
| 2759 { Expression *e; | |
| 2760 | |
| 2761 e = specValue; | |
| 2762 if (!e) | |
| 2763 { | |
| 2764 // Create a dummy value | |
| 2765 if (!edummy) | |
| 2766 edummy = valType->defaultInit(); | |
| 2767 e = edummy; | |
| 2768 } | |
| 2769 return (void *)e; | |
| 2770 } | |
| 2771 | |
| 2772 | |
| 2773 Object *TemplateValueParameter::specialization() | |
| 2774 { | |
| 2775 return specValue; | |
| 2776 } | |
| 2777 | |
| 2778 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2779 Object *TemplateValueParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2780 { |
| 2781 Expression *e = defaultValue; | |
| 2782 if (e) | |
| 2783 { | |
| 2784 e = e->syntaxCopy(); | |
| 2785 e = e->semantic(sc); | |
| 2786 #if DMDV2 | |
| 2787 if (e->op == TOKdefault) | |
| 2788 { DefaultInitExp *de = (DefaultInitExp *)e; | |
| 2789 e = de->resolve(loc, sc); | |
| 2790 } | |
| 2791 #endif | |
| 2792 } | |
| 2793 return e; | |
| 2794 } | |
| 2795 | |
| 2796 /* ======================== TemplateTupleParameter ========================== */ | |
| 2797 | |
| 2798 // variadic-parameter | |
| 2799 | |
| 2800 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2801 : TemplateParameter(loc, ident) | |
| 2802 { | |
| 2803 this->ident = ident; | |
| 2804 } | |
| 2805 | |
| 2806 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2807 { | |
| 2808 return this; | |
| 2809 } | |
| 2810 | |
| 2811 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2812 { | |
| 2813 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2814 return tp; | |
| 2815 } | |
| 2816 | |
| 2817 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2818 { | |
| 2819 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2820 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2821 if (!sc->insert(sparam)) | |
| 2822 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2823 } | |
| 2824 | |
| 2825 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2826 { | |
| 2827 } | |
| 2828 | |
| 2829 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2830 { | |
| 2831 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2832 | |
| 2833 if (tvp) | |
| 2834 { | |
| 2835 return 1; // match | |
| 2836 } | |
| 2837 | |
| 2838 Lnomatch: | |
| 2839 return 0; | |
| 2840 } | |
| 2841 | |
| 2842 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2843 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2844 Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2845 Declaration **psparam, int flags) |
| 336 | 2846 { |
| 2847 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2848 | |
| 2849 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2850 * for the variadic parameter. | |
| 2851 */ | |
| 2852 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2853 Tuple *ovar; | |
| 2854 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2855 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2856 else | |
| 2857 { | |
| 2858 ovar = new Tuple(); | |
| 2859 //printf("ovar = %p\n", ovar); | |
| 2860 if (i < tiargs->dim) | |
| 2861 { | |
| 2862 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2863 ovar->objects.setDim(tiargs->dim - i); | |
| 2864 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2865 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2866 } | |
| 2867 } | |
| 2868 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2869 dedtypes->data[i] = (void *)ovar; | |
| 2870 return MATCHexact; | |
| 2871 } | |
| 2872 | |
| 2873 | |
| 2874 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2875 { | |
| 2876 printf(" %s... [", ident->toChars()); | |
| 2877 Tuple *v = isTuple(oded); | |
| 2878 assert(v); | |
| 2879 | |
| 2880 //printf("|%d| ", v->objects.dim); | |
| 2881 for (int i = 0; i < v->objects.dim; i++) | |
| 2882 { | |
| 2883 if (i) | |
| 2884 printf(", "); | |
| 2885 | |
| 2886 Object *o = (Object *)v->objects.data[i]; | |
| 2887 | |
| 2888 Dsymbol *sa = isDsymbol(o); | |
| 2889 if (sa) | |
| 2890 printf("alias: %s", sa->toChars()); | |
| 2891 | |
| 2892 Type *ta = isType(o); | |
| 2893 if (ta) | |
| 2894 printf("type: %s", ta->toChars()); | |
| 2895 | |
| 2896 Expression *ea = isExpression(o); | |
| 2897 if (ea) | |
| 2898 printf("exp: %s", ea->toChars()); | |
| 2899 | |
| 2900 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2901 } | |
| 2902 | |
| 2903 printf("]\n"); | |
| 2904 } | |
| 2905 | |
| 2906 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2907 { | |
| 2908 buf->writestring(ident->toChars()); | |
| 2909 buf->writestring("..."); | |
| 2910 } | |
| 2911 | |
| 2912 | |
| 2913 void *TemplateTupleParameter::dummyArg() | |
| 2914 { | |
| 2915 return NULL; | |
| 2916 } | |
| 2917 | |
| 2918 | |
| 2919 Object *TemplateTupleParameter::specialization() | |
| 2920 { | |
| 2921 return NULL; | |
| 2922 } | |
| 2923 | |
| 2924 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2925 Object *TemplateTupleParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2926 { |
| 2927 return NULL; | |
| 2928 } | |
| 2929 | |
| 2930 /* ======================== TemplateInstance ================================ */ | |
| 2931 | |
| 2932 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2933 : ScopeDsymbol(NULL) | |
| 2934 { | |
| 2935 #if LOG | |
| 2936 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2937 #endif | |
| 2938 this->loc = loc; | |
| 2939 this->name = ident; | |
| 2940 this->tiargs = NULL; | |
| 2941 this->tempdecl = NULL; | |
| 2942 this->inst = NULL; | |
| 2943 this->argsym = NULL; | |
| 2944 this->aliasdecl = NULL; | |
| 2945 this->semanticdone = 0; | |
| 2946 this->semantictiargsdone = 0; | |
| 2947 this->withsym = NULL; | |
| 2948 this->nest = 0; | |
| 2949 this->havetempdecl = 0; | |
| 2950 this->isnested = NULL; | |
| 2951 this->errors = 0; | |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2952 |
|
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2953 // LDC |
|
1067
7ce8355fbcc6
Improved template emission control for singleobj building.
Christian Kamm <kamm incasoftware de>
parents:
948
diff
changeset
|
2954 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
|
2955 this->tinst = NULL; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2956 this->tmodule = NULL; |
| 336 | 2957 } |
| 2958 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2959 /***************** |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2960 * 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
|
2961 * template to instantiate. |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2962 */ |
| 336 | 2963 |
| 2964 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2965 : ScopeDsymbol(NULL) | |
| 2966 { | |
| 2967 #if LOG | |
| 2968 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2969 #endif | |
| 2970 this->loc = loc; | |
| 2971 this->name = td->ident; | |
| 2972 this->tiargs = tiargs; | |
| 2973 this->tempdecl = td; | |
| 2974 this->inst = NULL; | |
| 2975 this->argsym = NULL; | |
| 2976 this->aliasdecl = NULL; | |
| 2977 this->semanticdone = 0; | |
| 2978 this->semantictiargsdone = 1; | |
| 2979 this->withsym = NULL; | |
| 2980 this->nest = 0; | |
| 2981 this->havetempdecl = 1; | |
| 2982 this->isnested = NULL; | |
| 2983 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
|
2984 |
|
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
|
2985 // LDC |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2986 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
|
2987 this->tmodule = NULL; |
| 336 | 2988 |
| 2989 assert((size_t)tempdecl->scope > 0x10000); | |
| 2990 } | |
| 2991 | |
| 2992 | |
| 2993 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 2994 { | |
| 2995 Objects *a = NULL; | |
| 2996 if (objs) | |
| 2997 { a = new Objects(); | |
| 2998 a->setDim(objs->dim); | |
| 2999 for (size_t i = 0; i < objs->dim; i++) | |
| 3000 { | |
| 3001 Type *ta = isType((Object *)objs->data[i]); | |
| 3002 if (ta) | |
| 3003 a->data[i] = ta->syntaxCopy(); | |
| 3004 else | |
| 3005 { | |
| 3006 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 3007 assert(ea); | |
| 3008 a->data[i] = ea->syntaxCopy(); | |
| 3009 } | |
| 3010 } | |
| 3011 } | |
| 3012 return a; | |
| 3013 } | |
| 3014 | |
| 3015 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 3016 { | |
| 3017 TemplateInstance *ti; | |
| 3018 | |
| 3019 if (s) | |
| 3020 ti = (TemplateInstance *)s; | |
| 3021 else | |
| 3022 ti = new TemplateInstance(loc, name); | |
| 3023 | |
| 3024 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 3025 | |
| 3026 ScopeDsymbol::syntaxCopy(ti); | |
| 3027 return ti; | |
| 3028 } | |
| 3029 | |
| 3030 | |
| 3031 void TemplateInstance::semantic(Scope *sc) | |
| 3032 { | |
| 3033 if (global.errors) | |
| 3034 { | |
| 3035 if (!global.gag) | |
| 3036 { | |
| 3037 /* Trying to soldier on rarely generates useful messages | |
| 3038 * at this point. | |
| 3039 */ | |
| 3040 fatal(); | |
| 3041 } | |
| 3042 return; | |
| 3043 } | |
| 3044 #if LOG | |
| 3045 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3046 #endif | |
| 3047 if (inst) // if semantic() was already run | |
| 3048 { | |
| 3049 #if LOG | |
| 3050 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 3051 #endif | |
| 3052 return; | |
| 3053 } | |
| 3054 | |
| 3055 if (semanticdone != 0) | |
| 3056 { | |
| 3057 error(loc, "recursive template expansion"); | |
| 3058 // inst = this; | |
| 3059 return; | |
| 3060 } | |
| 3061 semanticdone = 1; | |
| 3062 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3063 // 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
|
3064 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
|
3065 |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3066 // 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
|
3067 if (tinst) |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3068 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
|
3069 else |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3070 tmodule = sc->module; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
3071 //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
|
3072 |
| 336 | 3073 #if LOG |
| 3074 printf("\tdo semantic\n"); | |
| 3075 #endif | |
| 3076 if (havetempdecl) | |
| 3077 { | |
| 3078 assert((size_t)tempdecl->scope > 0x10000); | |
| 3079 // Deduce tdtypes | |
| 3080 tdtypes.setDim(tempdecl->parameters->dim); | |
| 3081 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 3082 { | |
| 3083 error("incompatible arguments for template instantiation"); | |
| 3084 inst = this; | |
| 3085 return; | |
| 3086 } | |
| 3087 } | |
| 3088 else | |
| 3089 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3090 /* 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
|
3091 * (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
|
3092 */ |
| 336 | 3093 semanticTiargs(sc); |
| 3094 | |
| 3095 tempdecl = findTemplateDeclaration(sc); | |
| 3096 if (tempdecl) | |
| 3097 tempdecl = findBestMatch(sc); | |
| 3098 if (!tempdecl || global.errors) | |
| 3099 { inst = this; | |
| 3100 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 3101 return; // error recovery | |
| 3102 } | |
| 3103 } | |
| 3104 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3105 hasNestedArgs(tiargs); |
| 336 | 3106 |
| 3107 /* See if there is an existing TemplateInstantiation that already | |
| 3108 * implements the typeargs. If so, just refer to that one instead. | |
| 3109 */ | |
| 3110 | |
| 3111 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 3112 { | |
| 3113 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 3114 #if LOG | |
| 3115 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 3116 #endif | |
| 3117 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 3118 | |
| 3119 // Nesting must match | |
| 3120 if (isnested != ti->isnested) | |
| 3121 continue; | |
| 3122 #if 0 | |
| 3123 if (isnested && sc->parent != ti->parent) | |
| 3124 continue; | |
| 3125 #endif | |
| 3126 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 3127 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 3128 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 3129 if (!match(o1, o2, tempdecl, sc)) | |
| 3130 goto L1; | |
| 3131 } | |
| 3132 | |
| 3133 // It's a match | |
| 3134 inst = ti; | |
| 3135 parent = ti->parent; | |
| 3136 #if LOG | |
| 3137 printf("\tit's a match with instance %p\n", inst); | |
| 3138 #endif | |
| 3139 return; | |
| 3140 | |
| 3141 L1: | |
| 3142 ; | |
| 3143 } | |
| 3144 | |
| 3145 /* So, we need to implement 'this' instance. | |
| 3146 */ | |
| 3147 #if LOG | |
| 3148 printf("\timplement template instance '%s'\n", toChars()); | |
| 3149 #endif | |
| 3150 unsigned errorsave = global.errors; | |
| 3151 inst = this; | |
| 3152 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 3153 tempdecl->instances.push(this); | |
| 3154 parent = tempdecl->parent; | |
| 3155 //printf("parent = '%s'\n", parent->kind()); | |
| 3156 | |
| 3157 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 3158 | |
| 3159 #if 1 | |
| 3160 if (isnested) | |
| 3161 parent = isnested; | |
| 3162 #endif | |
| 3163 //printf("parent = '%s'\n", parent->kind()); | |
| 3164 | |
| 3165 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 3166 // will get called on the instance members | |
| 3167 #if 1 | |
| 3168 int dosemantic3 = 0; | |
| 3169 { Array *a; | |
|
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diff
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|
3170 |
|
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changeset
|
3171 Scope *scx = sc; |
|
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|
3172 #if 0 |
|
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|
3173 for (scx = sc; scx; scx = scx->enclosing) |
|
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Merged DMD 1.038
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|
3174 if (scx->scopesym) |
|
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|
3175 break; |
|
330f999ade44
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|
3176 #endif |
|
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parents:
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diff
changeset
|
3177 |
|
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parents:
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changeset
|
3178 //if (scx && scx->scopesym) printf("3: scx is %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
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|
3179 if (scx && scx->scopesym && |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3180 scx->scopesym->members && !scx->scopesym->isTemplateMixin() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
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diff
changeset
|
3181 #if 1 // removed because it bloated compile times |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
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diff
changeset
|
3182 /* 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
|
3183 * 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
|
3184 * 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:
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diff
changeset
|
3185 * |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3186 * see bugzilla 2500. |
|
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|
3187 */ |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3188 && !scx->module->selfImports() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3189 #endif |
|
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|
3190 ) |
| 336 | 3191 { |
|
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|
3192 //printf("\t1: adding to %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
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changeset
|
3193 a = scx->scopesym->members; |
| 336 | 3194 } |
| 3195 else | |
| 3196 { Module *m = sc->module->importedFrom; | |
| 3197 //printf("\t2: adding to module %s instead of module %s\n", m->toChars(), sc->module->toChars()); | |
| 3198 a = m->members; | |
| 3199 if (m->semanticdone >= 3) | |
| 3200 dosemantic3 = 1; | |
| 3201 } | |
| 3202 for (int i = 0; 1; i++) | |
| 3203 { | |
| 3204 if (i == a->dim) | |
| 3205 { | |
| 3206 a->push(this); | |
| 3207 break; | |
| 3208 } | |
| 3209 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 3210 break; | |
| 3211 } | |
| 3212 } | |
| 3213 #endif | |
| 3214 | |
| 3215 // Copy the syntax trees from the TemplateDeclaration | |
| 3216 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3217 | |
| 3218 // Create our own scope for the template parameters | |
| 3219 Scope *scope = tempdecl->scope; | |
| 3220 if (!scope) | |
| 3221 { | |
| 3222 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 3223 return; | |
| 3224 } | |
| 3225 | |
| 3226 #if LOG | |
| 3227 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3228 #endif | |
| 3229 argsym = new ScopeDsymbol(); | |
| 3230 argsym->parent = scope->parent; | |
| 3231 scope = scope->push(argsym); | |
| 3232 | |
| 3233 // Declare each template parameter as an alias for the argument type | |
|
1103
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- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3234 Scope *paramscope = scope->push(); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
3235 paramscope->stc = 0; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3236 declareParameters(paramscope); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3237 paramscope->pop(); |
| 336 | 3238 |
| 3239 // Add members of template instance to template instance symbol table | |
| 3240 // parent = scope->scopesym; | |
| 3241 symtab = new DsymbolTable(); | |
| 3242 int memnum = 0; | |
| 3243 for (int i = 0; i < members->dim; i++) | |
| 3244 { | |
| 3245 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3246 #if LOG | |
| 3247 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 3248 #endif | |
| 3249 memnum |= s->addMember(scope, this, memnum); | |
| 3250 } | |
| 3251 #if LOG | |
| 3252 printf("adding members done\n"); | |
| 3253 #endif | |
| 3254 | |
| 3255 /* See if there is only one member of template instance, and that | |
| 3256 * member has the same name as the template instance. | |
| 3257 * If so, this template instance becomes an alias for that member. | |
| 3258 */ | |
| 3259 //printf("members->dim = %d\n", members->dim); | |
| 3260 if (members->dim) | |
| 3261 { | |
| 3262 Dsymbol *s; | |
| 3263 if (Dsymbol::oneMembers(members, &s) && s) | |
| 3264 { | |
| 3265 //printf("s->kind = '%s'\n", s->kind()); | |
| 3266 //s->print(); | |
| 3267 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 3268 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 3269 { | |
| 3270 //printf("setting aliasdecl\n"); | |
| 3271 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
|
3272 |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3273 // 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
|
3274 if (tempdecl->llvmInternal) { |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3275 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
|
3276 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
|
3277 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
|
3278 } |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3279 } |
| 336 | 3280 } |
| 3281 } | |
| 3282 } | |
| 3283 | |
| 3284 // Do semantic() analysis on template instance members | |
| 3285 #if LOG | |
| 3286 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3287 #endif | |
| 3288 Scope *sc2; | |
| 3289 sc2 = scope->push(this); | |
| 3290 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 3291 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
|
3292 sc2->tinst = this; |
| 336 | 3293 |
| 3294 #if !IN_LLVM | |
| 3295 #if _WIN32 | |
| 3296 __try | |
| 3297 { | |
| 3298 #endif | |
| 3299 #endif | |
| 3300 for (int i = 0; i < members->dim; i++) | |
| 3301 { | |
| 3302 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3303 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 3304 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 3305 // if (isnested) | |
| 3306 // s->parent = sc->parent; | |
| 3307 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3308 s->semantic(sc2); | |
| 3309 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3310 sc2->module->runDeferredSemantic(); | |
| 3311 } | |
| 3312 #if !IN_LLVM | |
| 3313 #if _WIN32 | |
| 3314 } | |
| 3315 __except (__ehfilter(GetExceptionInformation())) | |
| 3316 { | |
| 3317 global.gag = 0; // ensure error message gets printed | |
| 3318 error("recursive expansion"); | |
| 3319 fatal(); | |
| 3320 } | |
| 3321 #endif | |
| 3322 #endif | |
| 3323 | |
| 3324 /* If any of the instantiation members didn't get semantic() run | |
| 3325 * on them due to forward references, we cannot run semantic2() | |
| 3326 * or semantic3() yet. | |
| 3327 */ | |
| 3328 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 3329 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 3330 | |
| 3331 if (sd->parent == this) | |
| 3332 goto Laftersemantic; | |
| 3333 } | |
| 3334 | |
| 3335 /* The problem is when to parse the initializer for a variable. | |
| 3336 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3337 * for initializers inside a function. | |
| 3338 */ | |
| 3339 // if (sc->parent->isFuncDeclaration()) | |
| 3340 | |
| 3341 /* BUG 782: this has problems if the classes this depends on | |
| 3342 * are forward referenced. Find a way to defer semantic() | |
| 3343 * on this template. | |
| 3344 */ | |
| 3345 semantic2(sc2); | |
| 3346 | |
| 3347 if (sc->func || dosemantic3) | |
| 3348 { | |
| 3349 semantic3(sc2); | |
| 3350 } | |
| 3351 | |
| 3352 Laftersemantic: | |
| 3353 sc2->pop(); | |
| 3354 | |
| 3355 scope->pop(); | |
| 3356 | |
| 3357 // Give additional context info if error occurred during instantiation | |
| 3358 if (global.errors != errorsave) | |
| 3359 { | |
| 3360 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
|
3361 if(tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3362 tinst->printInstantiationTrace(); |
| 336 | 3363 errors = 1; |
| 3364 if (global.gag) | |
| 3365 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 3366 } | |
| 3367 | |
| 3368 #if LOG | |
| 3369 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3370 #endif | |
| 3371 } | |
| 3372 | |
| 3373 | |
| 3374 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 3375 { | |
| 3376 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3377 if (semantictiargsdone) | |
| 3378 return; | |
| 3379 semantictiargsdone = 1; | |
| 3380 semanticTiargs(loc, sc, tiargs); | |
| 3381 } | |
| 3382 | |
| 3383 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 3384 { | |
| 3385 // Run semantic on each argument, place results in tiargs[] | |
| 3386 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3387 if (!tiargs) | |
| 3388 return; | |
| 3389 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3390 { | |
| 3391 Object *o = (Object *)tiargs->data[j]; | |
| 3392 Type *ta = isType(o); | |
| 3393 Expression *ea = isExpression(o); | |
| 3394 Dsymbol *sa = isDsymbol(o); | |
| 3395 | |
| 3396 //printf("1: tiargs->data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 3397 if (ta) | |
| 3398 { | |
| 3399 //printf("type %s\n", ta->toChars()); | |
| 3400 // It might really be an Expression or an Alias | |
| 3401 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 3402 if (ea) | |
| 3403 { | |
| 3404 ea = ea->semantic(sc); | |
| 3405 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3406 tiargs->data[j] = ea; | |
| 3407 } | |
| 3408 else if (sa) | |
| 3409 { tiargs->data[j] = sa; | |
| 3410 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 3411 if (d) | |
| 3412 { | |
| 3413 size_t dim = d->objects->dim; | |
| 3414 tiargs->remove(j); | |
| 3415 tiargs->insert(j, d->objects); | |
| 3416 j--; | |
| 3417 } | |
| 3418 } | |
| 3419 else if (ta) | |
| 3420 { | |
| 3421 if (ta->ty == Ttuple) | |
| 3422 { // Expand tuple | |
| 3423 TypeTuple *tt = (TypeTuple *)ta; | |
| 3424 size_t dim = tt->arguments->dim; | |
| 3425 tiargs->remove(j); | |
| 3426 if (dim) | |
| 3427 { tiargs->reserve(dim); | |
| 3428 for (size_t i = 0; i < dim; i++) | |
| 3429 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 3430 tiargs->insert(j + i, arg->type); | |
| 3431 } | |
| 3432 } | |
| 3433 j--; | |
| 3434 } | |
| 3435 else | |
| 3436 tiargs->data[j] = ta; | |
| 3437 } | |
| 3438 else | |
| 3439 { | |
| 3440 assert(global.errors); | |
| 3441 tiargs->data[j] = Type::terror; | |
| 3442 } | |
| 3443 } | |
| 3444 else if (ea) | |
| 3445 { | |
| 3446 if (!ea) | |
| 3447 { assert(global.errors); | |
| 3448 ea = new IntegerExp(0); | |
| 3449 } | |
| 3450 assert(ea); | |
| 3451 ea = ea->semantic(sc); | |
| 3452 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3453 tiargs->data[j] = ea; | |
| 3454 if (ea->op == TOKtype) | |
| 3455 tiargs->data[j] = ea->type; | |
| 3456 } | |
| 3457 else if (sa) | |
| 3458 { | |
| 3459 } | |
| 3460 else | |
| 3461 { | |
| 3462 assert(0); | |
| 3463 } | |
| 3464 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3465 } | |
| 3466 #if 0 | |
| 3467 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3468 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3469 { | |
| 3470 Object *o = (Object *)tiargs->data[j]; | |
| 3471 Type *ta = isType(o); | |
| 3472 Expression *ea = isExpression(o); | |
| 3473 Dsymbol *sa = isDsymbol(o); | |
| 3474 Tuple *va = isTuple(o); | |
| 3475 | |
| 3476 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3477 } | |
| 3478 #endif | |
| 3479 } | |
| 3480 | |
| 3481 /********************************************** | |
| 3482 * Find template declaration corresponding to template instance. | |
| 3483 */ | |
| 3484 | |
| 3485 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3486 { | |
| 3487 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3488 if (!tempdecl) | |
| 3489 { | |
| 3490 /* Given: | |
| 3491 * foo!( ... ) | |
| 3492 * figure out which TemplateDeclaration foo refers to. | |
| 3493 */ | |
| 3494 Dsymbol *s; | |
| 3495 Dsymbol *scopesym; | |
| 3496 Identifier *id; | |
| 3497 int i; | |
| 3498 | |
| 3499 id = name; | |
| 3500 s = sc->search(loc, id, &scopesym); | |
| 3501 if (!s) | |
| 3502 { error("identifier '%s' is not defined", id->toChars()); | |
| 3503 return NULL; | |
| 3504 } | |
| 3505 #if LOG | |
| 3506 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 3507 if (s->parent) | |
| 3508 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 3509 #endif | |
| 3510 withsym = scopesym->isWithScopeSymbol(); | |
| 3511 | |
| 3512 /* We might have found an alias within a template when | |
| 3513 * we really want the template. | |
| 3514 */ | |
| 3515 TemplateInstance *ti; | |
| 3516 if (s->parent && | |
| 3517 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3518 { | |
| 3519 if ( | |
| 3520 (ti->name == id || | |
| 3521 ti->toAlias()->ident == id) | |
| 3522 && | |
| 3523 ti->tempdecl) | |
| 3524 { | |
| 3525 /* This is so that one can refer to the enclosing | |
| 3526 * template, even if it has the same name as a member | |
| 3527 * of the template, if it has a !(arguments) | |
| 3528 */ | |
| 3529 tempdecl = ti->tempdecl; | |
| 3530 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3531 tempdecl = tempdecl->overroot; // then get the start | |
| 3532 s = tempdecl; | |
| 3533 } | |
| 3534 } | |
| 3535 | |
| 3536 s = s->toAlias(); | |
| 3537 | |
| 3538 /* It should be a TemplateDeclaration, not some other symbol | |
| 3539 */ | |
| 3540 tempdecl = s->isTemplateDeclaration(); | |
| 3541 if (!tempdecl) | |
| 3542 { | |
| 3543 if (!s->parent && global.errors) | |
| 3544 return NULL; | |
| 3545 if (!s->parent && s->getType()) | |
| 3546 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3547 if (!s2) | |
| 3548 { | |
| 3549 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3550 return NULL; | |
| 3551 } | |
| 3552 s = s2; | |
| 3553 } | |
| 3554 #ifdef DEBUG | |
| 3555 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3556 #endif | |
| 3557 //assert(s->parent); | |
| 3558 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3559 if (ti && | |
| 3560 (ti->name == id || | |
| 3561 ti->toAlias()->ident == id) | |
| 3562 && | |
| 3563 ti->tempdecl) | |
| 3564 { | |
| 3565 /* This is so that one can refer to the enclosing | |
| 3566 * template, even if it has the same name as a member | |
| 3567 * of the template, if it has a !(arguments) | |
| 3568 */ | |
| 3569 tempdecl = ti->tempdecl; | |
| 3570 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3571 tempdecl = tempdecl->overroot; // then get the start | |
| 3572 } | |
| 3573 else | |
| 3574 { | |
| 3575 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3576 return NULL; | |
| 3577 } | |
| 3578 } | |
| 3579 } | |
| 3580 else | |
| 3581 assert(tempdecl->isTemplateDeclaration()); | |
| 3582 return tempdecl; | |
| 3583 } | |
| 3584 | |
| 3585 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3586 { | |
| 3587 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3588 * name, look for the best match. | |
| 3589 */ | |
| 3590 TemplateDeclaration *td_ambig = NULL; | |
| 3591 TemplateDeclaration *td_best = NULL; | |
| 3592 MATCH m_best = MATCHnomatch; | |
| 3593 Objects dedtypes; | |
| 3594 | |
| 3595 #if LOG | |
| 3596 printf("TemplateInstance::findBestMatch()\n"); | |
| 3597 #endif | |
| 3598 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3599 { | |
| 3600 MATCH m; | |
| 3601 | |
| 3602 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3603 | |
| 3604 // If more arguments than parameters, | |
| 3605 // then this is no match. | |
| 3606 if (td->parameters->dim < tiargs->dim) | |
| 3607 { | |
| 3608 if (!td->isVariadic()) | |
| 3609 continue; | |
| 3610 } | |
| 3611 | |
| 3612 dedtypes.setDim(td->parameters->dim); | |
| 3613 dedtypes.zero(); | |
| 3614 if (!td->scope) | |
| 3615 { | |
| 3616 error("forward reference to template declaration %s", td->toChars()); | |
| 3617 return NULL; | |
| 3618 } | |
| 3619 m = td->matchWithInstance(this, &dedtypes, 0); | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3620 //printf("matchWithInstance = %d\n", m); |
| 336 | 3621 if (!m) // no match at all |
| 3622 continue; | |
| 3623 | |
| 3624 if (m < m_best) | |
| 3625 goto Ltd_best; | |
| 3626 if (m > m_best) | |
| 3627 goto Ltd; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3628 |
| 336 | 3629 { |
| 3630 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3631 int c1 = td->leastAsSpecialized(td_best); | |
| 3632 int c2 = td_best->leastAsSpecialized(td); | |
| 3633 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3634 | |
| 3635 if (c1 > c2) | |
| 3636 goto Ltd; | |
| 3637 else if (c1 < c2) | |
| 3638 goto Ltd_best; | |
| 3639 else | |
| 3640 goto Lambig; | |
| 3641 } | |
| 3642 | |
| 3643 Lambig: // td_best and td are ambiguous | |
| 3644 td_ambig = td; | |
| 3645 continue; | |
| 3646 | |
| 3647 Ltd_best: // td_best is the best match so far | |
| 3648 td_ambig = NULL; | |
| 3649 continue; | |
| 3650 | |
| 3651 Ltd: // td is the new best match | |
| 3652 td_ambig = NULL; | |
| 3653 td_best = td; | |
| 3654 m_best = m; | |
| 3655 tdtypes.setDim(dedtypes.dim); | |
| 3656 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3657 continue; | |
| 3658 } | |
| 3659 | |
| 3660 if (!td_best) | |
| 3661 { | |
| 3662 error("%s does not match any template declaration", toChars()); | |
| 3663 return NULL; | |
| 3664 } | |
| 3665 if (td_ambig) | |
| 3666 { | |
| 3667 error("%s matches more than one template declaration, %s and %s", | |
| 3668 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3669 } | |
| 3670 | |
| 3671 /* The best match is td_best | |
| 3672 */ | |
| 3673 tempdecl = td_best; | |
| 3674 | |
| 3675 #if 0 | |
| 3676 /* Cast any value arguments to be same type as value parameter | |
| 3677 */ | |
| 3678 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3679 { Object *o = (Object *)tiargs->data[i]; | |
| 3680 Expression *ea = isExpression(o); // value argument | |
| 3681 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3682 assert(tp); | |
| 3683 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3684 if (tvp) | |
| 3685 { | |
| 3686 assert(ea); | |
| 3687 ea = ea->castTo(tvp->valType); | |
| 3688 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3689 tiargs->data[i] = (Object *)ea; | |
| 3690 } | |
| 3691 } | |
| 3692 #endif | |
| 3693 | |
| 3694 #if LOG | |
| 3695 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3696 #endif | |
| 3697 return tempdecl; | |
| 3698 } | |
| 3699 | |
| 3700 | |
| 3701 /***************************************** | |
| 3702 * Determines if a TemplateInstance will need a nested | |
| 3703 * generation of the TemplateDeclaration. | |
| 3704 */ | |
| 3705 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3706 int TemplateInstance::hasNestedArgs(Objects *args) |
| 336 | 3707 { int nested = 0; |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3708 //printf("TemplateInstance::hasNestedArgs('%s')\n", tempdecl->ident->toChars()); |
| 336 | 3709 |
| 3710 /* A nested instance happens when an argument references a local | |
| 3711 * symbol that is on the stack. | |
| 3712 */ | |
| 3713 for (size_t i = 0; i < args->dim; i++) | |
| 3714 { Object *o = (Object *)args->data[i]; | |
| 3715 Expression *ea = isExpression(o); | |
| 3716 Dsymbol *sa = isDsymbol(o); | |
| 3717 Tuple *va = isTuple(o); | |
| 3718 if (ea) | |
| 3719 { | |
| 3720 if (ea->op == TOKvar) | |
| 3721 { | |
| 3722 sa = ((VarExp *)ea)->var; | |
| 3723 goto Lsa; | |
| 3724 } | |
| 3725 if (ea->op == TOKfunction) | |
| 3726 { | |
| 3727 sa = ((FuncExp *)ea)->fd; | |
| 3728 goto Lsa; | |
| 3729 } | |
| 3730 } | |
| 3731 else if (sa) | |
| 3732 { | |
| 3733 Lsa: | |
| 3734 Declaration *d = sa->isDeclaration(); | |
| 3735 if (d && !d->isDataseg() && | |
| 3736 #if DMDV2 | |
| 3737 !(d->storage_class & STCmanifest) && | |
| 3738 #endif | |
| 3739 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && | |
| 3740 !isTemplateMixin()) | |
| 3741 { | |
| 3742 // if module level template | |
| 3743 if (tempdecl->toParent()->isModule()) | |
| 3744 { Dsymbol *dparent = d->toParent(); | |
| 3745 if (!isnested) | |
| 3746 isnested = dparent; | |
| 3747 else if (isnested != dparent) | |
| 3748 { | |
| 3749 /* Select the more deeply nested of the two. | |
| 3750 * Error if one is not nested inside the other. | |
| 3751 */ | |
| 3752 for (Dsymbol *p = isnested; p; p = p->parent) | |
| 3753 { | |
| 3754 if (p == dparent) | |
| 3755 goto L1; // isnested is most nested | |
| 3756 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3757 for (Dsymbol *p = dparent; p; p = p->parent) |
| 336 | 3758 { |
| 3759 if (p == isnested) | |
| 3760 { isnested = dparent; | |
| 3761 goto L1; // dparent is most nested | |
| 3762 } | |
| 3763 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3764 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
|
3765 toChars(), isnested->toChars(), dparent->toChars()); |
| 336 | 3766 } |
| 3767 L1: | |
| 3768 //printf("\tnested inside %s\n", isnested->toChars()); | |
| 3769 nested |= 1; | |
| 3770 } | |
| 3771 else | |
| 3772 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3773 } | |
| 3774 } | |
| 3775 else if (va) | |
| 3776 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3777 nested |= hasNestedArgs(&va->objects); |
| 336 | 3778 } |
| 3779 } | |
| 3780 return nested; | |
| 3781 } | |
| 3782 | |
| 3783 /**************************************** | |
| 3784 * This instance needs an identifier for name mangling purposes. | |
| 3785 * Create one by taking the template declaration name and adding | |
| 3786 * the type signature for it. | |
| 3787 */ | |
| 3788 | |
| 3789 Identifier *TemplateInstance::genIdent() | |
| 3790 { OutBuffer buf; | |
| 3791 char *id; | |
| 3792 Objects *args; | |
| 3793 | |
| 3794 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3795 id = tempdecl->ident->toChars(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3796 buf.printf("__T%zu%s", strlen(id), id); |
| 336 | 3797 args = tiargs; |
| 3798 for (int i = 0; i < args->dim; i++) | |
| 3799 { Object *o = (Object *)args->data[i]; | |
| 3800 Type *ta = isType(o); | |
| 3801 Expression *ea = isExpression(o); | |
| 3802 Dsymbol *sa = isDsymbol(o); | |
| 3803 Tuple *va = isTuple(o); | |
| 3804 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3805 if (ta) | |
| 3806 { | |
| 3807 buf.writeByte('T'); | |
| 3808 if (ta->deco) | |
| 3809 buf.writestring(ta->deco); | |
| 3810 else | |
| 3811 { | |
| 3812 #ifdef DEBUG | |
| 3813 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3814 #endif | |
| 3815 assert(global.errors); | |
| 3816 } | |
| 3817 } | |
| 3818 else if (ea) | |
| 3819 { sinteger_t v; | |
| 3820 real_t r; | |
| 3821 | |
| 3822 if (ea->op == TOKvar) | |
| 3823 { | |
| 3824 sa = ((VarExp *)ea)->var; | |
| 3825 ea = NULL; | |
| 3826 goto Lsa; | |
| 3827 } | |
| 3828 if (ea->op == TOKfunction) | |
| 3829 { | |
| 3830 sa = ((FuncExp *)ea)->fd; | |
| 3831 ea = NULL; | |
| 3832 goto Lsa; | |
| 3833 } | |
| 3834 buf.writeByte('V'); | |
| 3835 if (ea->op == TOKtuple) | |
| 3836 { ea->error("tuple is not a valid template value argument"); | |
| 3837 continue; | |
| 3838 } | |
| 3839 #if 1 | |
| 3840 /* Use deco that matches what it would be for a function parameter | |
| 3841 */ | |
| 3842 buf.writestring(ea->type->deco); | |
| 3843 #else | |
| 3844 // Use type of parameter, not type of argument | |
| 3845 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3846 assert(tp); | |
| 3847 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3848 assert(tvp); | |
| 3849 buf.writestring(tvp->valType->deco); | |
| 3850 #endif | |
| 3851 ea->toMangleBuffer(&buf); | |
| 3852 } | |
| 3853 else if (sa) | |
| 3854 { | |
| 3855 Lsa: | |
| 3856 buf.writeByte('S'); | |
| 3857 Declaration *d = sa->isDeclaration(); | |
| 3858 if (d && !d->type->deco) | |
| 3859 error("forward reference of %s", d->toChars()); | |
| 3860 else | |
| 3861 { | |
| 3862 char *p = sa->mangle(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3863 buf.printf("%zu%s", strlen(p), p); |
| 336 | 3864 } |
| 3865 } | |
| 3866 else if (va) | |
| 3867 { | |
| 3868 assert(i + 1 == args->dim); // must be last one | |
| 3869 args = &va->objects; | |
| 3870 i = -1; | |
| 3871 } | |
| 3872 else | |
| 3873 assert(0); | |
| 3874 } | |
| 3875 buf.writeByte('Z'); | |
| 3876 id = buf.toChars(); | |
| 3877 buf.data = NULL; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3878 //printf("\tgenIdent = %s\n", id); |
| 336 | 3879 return new Identifier(id, TOKidentifier); |
| 3880 } | |
| 3881 | |
| 3882 | |
| 3883 /**************************************************** | |
| 3884 * Declare parameters of template instance, initialize them with the | |
| 3885 * template instance arguments. | |
| 3886 */ | |
| 3887 | |
| 3888 void TemplateInstance::declareParameters(Scope *scope) | |
| 3889 { | |
| 3890 //printf("TemplateInstance::declareParameters()\n"); | |
| 3891 for (int i = 0; i < tdtypes.dim; i++) | |
| 3892 { | |
| 3893 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3894 //Object *o = (Object *)tiargs->data[i]; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3895 Object *o = (Object *)tdtypes.data[i]; // initializer for tp |
| 336 | 3896 |
| 3897 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3898 tempdecl->declareParameter(scope, tp, o); | |
| 3899 } | |
| 3900 } | |
| 3901 | |
| 3902 | |
| 3903 void TemplateInstance::semantic2(Scope *sc) | |
| 3904 { int i; | |
| 3905 | |
| 3906 if (semanticdone >= 2) | |
| 3907 return; | |
| 3908 semanticdone = 2; | |
| 3909 #if LOG | |
| 3910 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3911 #endif | |
| 3912 if (!errors && members) | |
| 3913 { | |
| 3914 sc = tempdecl->scope; | |
| 3915 assert(sc); | |
| 3916 sc = sc->push(argsym); | |
| 3917 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
|
3918 sc->tinst = this; |
| 336 | 3919 for (i = 0; i < members->dim; i++) |
| 3920 { | |
| 3921 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3922 #if LOG | |
| 3923 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3924 #endif | |
| 3925 s->semantic2(sc); | |
| 3926 } | |
| 3927 sc = sc->pop(); | |
| 3928 sc->pop(); | |
| 3929 } | |
| 3930 #if LOG | |
| 3931 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3932 #endif | |
| 3933 } | |
| 3934 | |
| 3935 void TemplateInstance::semantic3(Scope *sc) | |
| 3936 { | |
| 3937 #if LOG | |
| 3938 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3939 #endif | |
| 3940 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3941 if (semanticdone >= 3) | |
| 3942 return; | |
| 3943 semanticdone = 3; | |
| 3944 if (!errors && members) | |
| 3945 { | |
| 3946 sc = tempdecl->scope; | |
| 3947 sc = sc->push(argsym); | |
| 3948 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
|
3949 sc->tinst = this; |
| 336 | 3950 for (int i = 0; i < members->dim; i++) |
| 3951 { | |
| 3952 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3953 s->semantic3(sc); | |
| 3954 } | |
| 3955 sc = sc->pop(); | |
| 3956 sc->pop(); | |
| 3957 } | |
| 3958 } | |
| 3959 | |
| 3960 void TemplateInstance::toObjFile(int multiobj) | |
| 3961 { | |
| 3962 #if LOG | |
| 3963 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3964 #endif | |
| 3965 if (!errors && members) | |
| 3966 { | |
| 3967 if (multiobj) | |
| 3968 // Append to list of object files to be written later | |
| 3969 //obj_append(this); | |
| 3970 assert(0 && "multiobj"); | |
| 3971 else | |
| 3972 { | |
| 3973 for (int i = 0; i < members->dim; i++) | |
| 3974 { | |
| 3975 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3976 s->toObjFile(multiobj); | |
| 3977 } | |
| 3978 } | |
| 3979 } | |
| 3980 } | |
| 3981 | |
| 3982 void TemplateInstance::inlineScan() | |
| 3983 { | |
| 3984 #if LOG | |
| 3985 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3986 #endif | |
| 3987 if (!errors && members) | |
| 3988 { | |
| 3989 for (int i = 0; i < members->dim; i++) | |
| 3990 { | |
| 3991 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3992 s->inlineScan(); | |
| 3993 } | |
| 3994 } | |
| 3995 } | |
| 3996 | |
| 3997 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3998 { | |
| 3999 int i; | |
| 4000 | |
| 4001 Identifier *id = name; | |
| 4002 buf->writestring(id->toChars()); | |
| 4003 buf->writestring("!("); | |
| 4004 if (nest) | |
| 4005 buf->writestring("..."); | |
| 4006 else | |
| 4007 { | |
| 4008 nest++; | |
| 4009 Objects *args = tiargs; | |
| 4010 for (i = 0; i < args->dim; i++) | |
| 4011 { | |
| 4012 if (i) | |
| 4013 buf->writeByte(','); | |
| 4014 Object *oarg = (Object *)args->data[i]; | |
| 4015 ObjectToCBuffer(buf, hgs, oarg); | |
| 4016 } | |
| 4017 nest--; | |
| 4018 } | |
| 4019 buf->writeByte(')'); | |
| 4020 } | |
| 4021 | |
| 4022 | |
| 4023 Dsymbol *TemplateInstance::toAlias() | |
| 4024 { | |
| 4025 #if LOG | |
| 4026 printf("TemplateInstance::toAlias()\n"); | |
| 4027 #endif | |
| 4028 if (!inst) | |
| 4029 { error("cannot resolve forward reference"); | |
| 4030 return this; | |
| 4031 } | |
| 4032 | |
| 4033 if (inst != this) | |
| 4034 return inst->toAlias(); | |
| 4035 | |
| 4036 if (aliasdecl) | |
| 4037 return aliasdecl->toAlias(); | |
| 4038 | |
| 4039 return inst; | |
| 4040 } | |
| 4041 | |
| 4042 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 4043 { | |
| 4044 return aliasdecl; | |
| 4045 } | |
| 4046 | |
| 4047 const char *TemplateInstance::kind() | |
| 4048 { | |
| 4049 return "template instance"; | |
| 4050 } | |
| 4051 | |
| 4052 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 4053 { | |
| 4054 *ps = NULL; | |
| 4055 return TRUE; | |
| 4056 } | |
| 4057 | |
| 4058 char *TemplateInstance::toChars() | |
| 4059 { | |
| 4060 OutBuffer buf; | |
| 4061 HdrGenState hgs; | |
| 4062 char *s; | |
| 4063 | |
| 4064 toCBuffer(&buf, &hgs); | |
| 4065 s = buf.toChars(); | |
| 4066 buf.data = NULL; | |
| 4067 return s; | |
| 4068 } | |
| 4069 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4070 void TemplateInstance::printInstantiationTrace() |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4071 { |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4072 if(global.gag) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4073 return; |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4074 |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
4075 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
|
4076 |
|
d4e95db0e62b
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|
4077 // determine instantiation depth |
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4078 int n_instantiations = 1; |
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4079 TemplateInstance* cur = this; |
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4080 while(cur = cur->tinst) |
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|
4081 ++n_instantiations; |
|
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|
4082 |
|
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4083 // show full trace only if it's short or verbose is on |
|
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4084 if(n_instantiations <= max_shown || global.params.verbose) |
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4085 { |
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|
4086 cur = this; |
|
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4087 while(cur) |
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4088 { |
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4089 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
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|
4090 cur = cur->tinst; |
|
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|
4091 } |
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4092 } |
|
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|
4093 else |
|
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Introducing template instantiation traces for static asserts and errors within templates.
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|
4094 { |
|
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Introducing template instantiation traces for static asserts and errors within templates.
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|
4095 cur = this; |
|
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|
4096 size_t i = 0; |
|
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|
4097 for(; i < max_shown/2; ++i, cur = cur->tinst) |
|
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|
4098 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
|
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4099 fprintf(stdmsg," ... (%d instantiations, -v to show) ...\n", n_instantiations - max_shown); |
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4100 for(; i < n_instantiations - max_shown + max_shown/2; ++i, cur = cur->tinst) |
|
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|
4101 {} |
|
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|
4102 for(; i < n_instantiations; ++i, cur = cur->tinst) |
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4103 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
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|
4104 } |
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4105 } |
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4106 |
| 336 | 4107 /* ======================== TemplateMixin ================================ */ |
| 4108 | |
| 4109 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 4110 Array *idents, Objects *tiargs) | |
| 4111 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 4112 { | |
| 4113 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 4114 this->ident = ident; | |
| 4115 this->tqual = tqual; | |
| 4116 this->idents = idents; | |
| 4117 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 4118 this->scope = NULL; | |
| 4119 } | |
| 4120 | |
| 4121 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 4122 { TemplateMixin *tm; | |
| 4123 | |
| 4124 Array *ids = new Array(); | |
| 4125 ids->setDim(idents->dim); | |
| 4126 for (int i = 0; i < idents->dim; i++) | |
| 4127 { // Matches TypeQualified::syntaxCopyHelper() | |
| 4128 Identifier *id = (Identifier *)idents->data[i]; | |
| 4129 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 4130 { | |
| 4131 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4132 | |
| 4133 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 4134 id = (Identifier *)ti; | |
| 4135 } | |
| 4136 ids->data[i] = id; | |
| 4137 } | |
| 4138 | |
| 4139 tm = new TemplateMixin(loc, ident, | |
| 4140 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 4141 ids, tiargs); | |
| 4142 TemplateInstance::syntaxCopy(tm); | |
| 4143 return tm; | |
| 4144 } | |
| 4145 | |
| 4146 void TemplateMixin::semantic(Scope *sc) | |
| 4147 { | |
| 4148 #if LOG | |
| 4149 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4150 fflush(stdout); | |
| 4151 #endif | |
| 4152 if (semanticdone && | |
| 4153 // This for when a class/struct contains mixin members, and | |
| 4154 // is done over because of forward references | |
| 4155 (!parent || !toParent()->isAggregateDeclaration())) | |
| 4156 { | |
| 4157 #if LOG | |
| 4158 printf("\tsemantic done\n"); | |
| 4159 #endif | |
| 4160 return; | |
| 4161 } | |
| 4162 if (!semanticdone) | |
| 4163 semanticdone = 1; | |
| 4164 #if LOG | |
| 4165 printf("\tdo semantic\n"); | |
| 4166 #endif | |
| 4167 | |
| 4168 #if !IN_LLVM | |
| 4169 // dont know what this is | |
| 4170 util_progress(); | |
| 4171 #endif | |
| 4172 | |
| 4173 Scope *scx = NULL; | |
| 4174 if (scope) | |
| 4175 { sc = scope; | |
| 4176 scx = scope; // save so we don't make redundant copies | |
| 4177 scope = NULL; | |
| 4178 } | |
| 4179 | |
| 4180 // Follow qualifications to find the TemplateDeclaration | |
| 4181 if (!tempdecl) | |
| 4182 { Dsymbol *s; | |
| 4183 int i; | |
| 4184 Identifier *id; | |
| 4185 | |
| 4186 if (tqual) | |
| 4187 { s = tqual->toDsymbol(sc); | |
| 4188 i = 0; | |
| 4189 } | |
| 4190 else | |
| 4191 { | |
| 4192 i = 1; | |
| 4193 id = (Identifier *)idents->data[0]; | |
| 4194 switch (id->dyncast()) | |
| 4195 { | |
| 4196 case DYNCAST_IDENTIFIER: | |
| 4197 s = sc->search(loc, id, NULL); | |
| 4198 break; | |
| 4199 | |
| 4200 case DYNCAST_DSYMBOL: | |
| 4201 { | |
| 4202 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4203 ti->semantic(sc); | |
| 4204 s = ti; | |
| 4205 break; | |
| 4206 } | |
| 4207 default: | |
| 4208 assert(0); | |
| 4209 } | |
| 4210 } | |
| 4211 | |
| 4212 for (; i < idents->dim; i++) | |
| 4213 { | |
| 4214 if (!s) | |
| 4215 break; | |
| 4216 id = (Identifier *)idents->data[i]; | |
| 4217 s = s->searchX(loc, sc, id); | |
| 4218 } | |
| 4219 if (!s) | |
| 4220 { | |
| 4221 error("is not defined"); | |
| 4222 inst = this; | |
| 4223 return; | |
| 4224 } | |
| 4225 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 4226 if (!tempdecl) | |
| 4227 { | |
| 4228 error("%s isn't a template", s->toChars()); | |
| 4229 inst = this; | |
| 4230 return; | |
| 4231 } | |
| 4232 } | |
| 4233 | |
| 4234 // Look for forward reference | |
| 4235 assert(tempdecl); | |
| 4236 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 4237 { | |
| 4238 if (!td->scope) | |
| 4239 { | |
| 4240 /* Cannot handle forward references if mixin is a struct member, | |
| 4241 * because addField must happen during struct's semantic, not | |
| 4242 * during the mixin semantic. | |
| 4243 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 4244 * semantic. | |
| 4245 */ | |
| 4246 semanticdone = 0; | |
| 4247 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 4248 if (ad) | |
| 4249 ad->sizeok = 2; | |
| 4250 else | |
| 4251 { | |
| 4252 // Forward reference | |
| 4253 //printf("forward reference - deferring\n"); | |
| 4254 scope = scx ? scx : new Scope(*sc); | |
| 4255 scope->setNoFree(); | |
| 4256 scope->module->addDeferredSemantic(this); | |
| 4257 } | |
| 4258 return; | |
| 4259 } | |
| 4260 } | |
| 4261 | |
| 4262 // Run semantic on each argument, place results in tiargs[] | |
| 4263 semanticTiargs(sc); | |
| 4264 | |
| 4265 tempdecl = findBestMatch(sc); | |
| 4266 if (!tempdecl) | |
| 4267 { inst = this; | |
| 4268 return; // error recovery | |
| 4269 } | |
| 4270 | |
| 4271 if (!ident) | |
| 4272 ident = genIdent(); | |
| 4273 | |
| 4274 inst = this; | |
| 4275 parent = sc->parent; | |
| 4276 | |
| 4277 /* Detect recursive mixin instantiations. | |
| 4278 */ | |
| 4279 for (Dsymbol *s = parent; s; s = s->parent) | |
| 4280 { | |
| 4281 //printf("\ts = '%s'\n", s->toChars()); | |
| 4282 TemplateMixin *tm = s->isTemplateMixin(); | |
| 4283 if (!tm || tempdecl != tm->tempdecl) | |
| 4284 continue; | |
| 4285 | |
| 4286 /* Different argument list lengths happen with variadic args | |
| 4287 */ | |
| 4288 if (tiargs->dim != tm->tiargs->dim) | |
| 4289 continue; | |
| 4290 | |
| 4291 for (int i = 0; i < tiargs->dim; i++) | |
| 4292 { Object *o = (Object *)tiargs->data[i]; | |
| 4293 Type *ta = isType(o); | |
| 4294 Expression *ea = isExpression(o); | |
| 4295 Dsymbol *sa = isDsymbol(o); | |
| 4296 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 4297 if (ta) | |
| 4298 { | |
| 4299 Type *tmta = isType(tmo); | |
| 4300 if (!tmta) | |
| 4301 goto Lcontinue; | |
| 4302 if (!ta->equals(tmta)) | |
| 4303 goto Lcontinue; | |
| 4304 } | |
| 4305 else if (ea) | |
| 4306 { Expression *tme = isExpression(tmo); | |
| 4307 if (!tme || !ea->equals(tme)) | |
| 4308 goto Lcontinue; | |
| 4309 } | |
| 4310 else if (sa) | |
| 4311 { | |
| 4312 Dsymbol *tmsa = isDsymbol(tmo); | |
| 4313 if (sa != tmsa) | |
| 4314 goto Lcontinue; | |
| 4315 } | |
| 4316 else | |
| 4317 assert(0); | |
| 4318 } | |
| 4319 error("recursive mixin instantiation"); | |
| 4320 return; | |
| 4321 | |
| 4322 Lcontinue: | |
| 4323 continue; | |
| 4324 } | |
| 4325 | |
| 4326 // Copy the syntax trees from the TemplateDeclaration | |
| 4327 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 4328 if (!members) | |
| 4329 return; | |
| 4330 | |
| 4331 symtab = new DsymbolTable(); | |
| 4332 | |
| 4333 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 4334 { | |
| 4335 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 4336 if (sds) | |
| 4337 { | |
| 4338 sds->importScope(this, PROTpublic); | |
| 4339 break; | |
| 4340 } | |
| 4341 } | |
| 4342 | |
| 4343 #if LOG | |
| 4344 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 4345 #endif | |
| 4346 Scope *scy = sc; | |
| 4347 scy = sc->push(this); | |
| 4348 scy->parent = this; | |
| 4349 | |
| 4350 argsym = new ScopeDsymbol(); | |
| 4351 argsym->parent = scy->parent; | |
| 4352 Scope *scope = scy->push(argsym); | |
| 4353 | |
| 4354 unsigned errorsave = global.errors; | |
| 4355 | |
| 4356 // Declare each template parameter as an alias for the argument type | |
| 4357 declareParameters(scope); | |
| 4358 | |
| 4359 // Add members to enclosing scope, as well as this scope | |
| 4360 for (unsigned i = 0; i < members->dim; i++) | |
| 4361 { Dsymbol *s; | |
| 4362 | |
| 4363 s = (Dsymbol *)members->data[i]; | |
| 4364 s->addMember(scope, this, i); | |
| 4365 //sc->insert(s); | |
| 4366 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 4367 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 4368 } | |
| 4369 | |
| 4370 // Do semantic() analysis on template instance members | |
| 4371 #if LOG | |
| 4372 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 4373 #endif | |
| 4374 Scope *sc2; | |
| 4375 sc2 = scope->push(this); | |
| 4376 sc2->offset = sc->offset; | |
| 4377 for (int i = 0; i < members->dim; i++) | |
| 4378 { | |
| 4379 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4380 s->semantic(sc2); | |
| 4381 } | |
| 4382 sc->offset = sc2->offset; | |
| 4383 | |
| 4384 /* The problem is when to parse the initializer for a variable. | |
| 4385 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 4386 * for initializers inside a function. | |
| 4387 */ | |
| 4388 // if (sc->parent->isFuncDeclaration()) | |
| 4389 | |
| 4390 semantic2(sc2); | |
| 4391 | |
| 4392 if (sc->func) | |
| 4393 { | |
| 4394 semantic3(sc2); | |
| 4395 } | |
| 4396 | |
| 4397 // Give additional context info if error occurred during instantiation | |
| 4398 if (global.errors != errorsave) | |
| 4399 { | |
| 4400 error("error instantiating"); | |
| 4401 } | |
| 4402 | |
| 4403 sc2->pop(); | |
| 4404 | |
| 4405 scope->pop(); | |
| 4406 | |
| 4407 // if (!isAnonymous()) | |
| 4408 { | |
| 4409 scy->pop(); | |
| 4410 } | |
| 4411 #if LOG | |
| 4412 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4413 #endif | |
| 4414 } | |
| 4415 | |
| 4416 void TemplateMixin::semantic2(Scope *sc) | |
| 4417 { int i; | |
| 4418 | |
| 4419 if (semanticdone >= 2) | |
| 4420 return; | |
| 4421 semanticdone = 2; | |
| 4422 #if LOG | |
| 4423 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4424 #endif | |
| 4425 if (members) | |
| 4426 { | |
| 4427 assert(sc); | |
| 4428 sc = sc->push(argsym); | |
| 4429 sc = sc->push(this); | |
| 4430 for (i = 0; i < members->dim; i++) | |
| 4431 { | |
| 4432 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4433 #if LOG | |
| 4434 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 4435 #endif | |
| 4436 s->semantic2(sc); | |
| 4437 } | |
| 4438 sc = sc->pop(); | |
| 4439 sc->pop(); | |
| 4440 } | |
| 4441 #if LOG | |
| 4442 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4443 #endif | |
| 4444 } | |
| 4445 | |
| 4446 void TemplateMixin::semantic3(Scope *sc) | |
| 4447 { int i; | |
| 4448 | |
| 4449 if (semanticdone >= 3) | |
| 4450 return; | |
| 4451 semanticdone = 3; | |
| 4452 #if LOG | |
| 4453 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 4454 #endif | |
| 4455 if (members) | |
| 4456 { | |
| 4457 sc = sc->push(argsym); | |
| 4458 sc = sc->push(this); | |
| 4459 for (i = 0; i < members->dim; i++) | |
| 4460 { | |
| 4461 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4462 s->semantic3(sc); | |
| 4463 } | |
| 4464 sc = sc->pop(); | |
| 4465 sc->pop(); | |
| 4466 } | |
| 4467 } | |
| 4468 | |
| 4469 void TemplateMixin::inlineScan() | |
| 4470 { | |
| 4471 TemplateInstance::inlineScan(); | |
| 4472 } | |
| 4473 | |
| 4474 const char *TemplateMixin::kind() | |
| 4475 { | |
| 4476 return "mixin"; | |
| 4477 } | |
| 4478 | |
| 4479 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 4480 { | |
| 4481 return Dsymbol::oneMember(ps); | |
| 4482 } | |
| 4483 | |
| 4484 int TemplateMixin::hasPointers() | |
| 4485 { | |
| 4486 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 4487 for (size_t i = 0; i < members->dim; i++) | |
| 4488 { | |
| 4489 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4490 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 4491 if (s->hasPointers()) | |
| 4492 { | |
| 4493 return 1; | |
| 4494 } | |
| 4495 } | |
| 4496 return 0; | |
| 4497 } | |
| 4498 | |
| 4499 char *TemplateMixin::toChars() | |
| 4500 { | |
| 4501 OutBuffer buf; | |
| 4502 HdrGenState hgs; | |
| 4503 char *s; | |
| 4504 | |
| 4505 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 4506 s = buf.toChars(); | |
| 4507 buf.data = NULL; | |
| 4508 return s; | |
| 4509 } | |
| 4510 | |
| 4511 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4512 { | |
| 4513 buf->writestring("mixin "); | |
| 4514 | |
| 4515 for (int i = 0; i < idents->dim; i++) | |
| 4516 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4517 | |
| 4518 if (i) | |
| 4519 buf->writeByte('.'); | |
| 4520 buf->writestring(id->toChars()); | |
| 4521 } | |
| 4522 buf->writestring("!("); | |
| 4523 if (tiargs) | |
| 4524 { | |
| 4525 for (int i = 0; i < tiargs->dim; i++) | |
| 4526 { if (i) | |
| 4527 buf->writebyte(','); | |
| 4528 Object *oarg = (Object *)tiargs->data[i]; | |
| 4529 Type *t = isType(oarg); | |
| 4530 Expression *e = isExpression(oarg); | |
| 4531 Dsymbol *s = isDsymbol(oarg); | |
| 4532 if (t) | |
| 4533 t->toCBuffer(buf, NULL, hgs); | |
| 4534 else if (e) | |
| 4535 e->toCBuffer(buf, hgs); | |
| 4536 else if (s) | |
| 4537 { | |
| 4538 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4539 buf->writestring(p); | |
| 4540 } | |
| 4541 else if (!oarg) | |
| 4542 { | |
| 4543 buf->writestring("NULL"); | |
| 4544 } | |
| 4545 else | |
| 4546 { | |
| 4547 assert(0); | |
| 4548 } | |
| 4549 } | |
| 4550 } | |
| 4551 buf->writebyte(')'); | |
| 4552 if (ident) | |
| 4553 { | |
| 4554 buf->writebyte(' '); | |
| 4555 buf->writestring(ident->toChars()); | |
| 4556 } | |
| 4557 buf->writebyte(';'); | |
| 4558 buf->writenl(); | |
| 4559 } | |
| 4560 | |
| 4561 | |
| 4562 void TemplateMixin::toObjFile(int multiobj) | |
| 4563 { | |
| 4564 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4565 TemplateInstance::toObjFile(multiobj); | |
| 4566 } | |
| 4567 |