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annotate dmd/template.c @ 1174:0b26cfb2d445
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| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Sun, 29 Mar 2009 19:19:32 +0200 |
| parents | dbe4af57b240 |
| children | e961851fb8be |
| 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 #if IN_LLVM |
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342 // LDC |
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343 td->intrinsicName = intrinsicName; |
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344 #endif |
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345 |
| 336 | 346 return td; |
| 347 } | |
| 348 | |
| 349 void TemplateDeclaration::semantic(Scope *sc) | |
| 350 { | |
| 351 #if LOG | |
| 352 printf("TemplateDeclaration::semantic(this = %p, id = '%s')\n", this, ident->toChars()); | |
| 353 #endif | |
| 354 if (scope) | |
| 355 return; // semantic() already run | |
| 356 | |
| 357 if (sc->func) | |
| 358 { | |
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359 #if DMDV1 |
| 336 | 360 error("cannot declare template at function scope %s", sc->func->toChars()); |
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361 #endif |
| 336 | 362 } |
| 363 | |
| 364 if (/*global.params.useArrayBounds &&*/ sc->module) | |
| 365 { | |
| 366 // Generate this function as it may be used | |
| 367 // when template is instantiated in other modules | |
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368 |
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369 // FIXME: LDC |
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370 //sc->module->toModuleArray(); |
| 336 | 371 } |
| 372 | |
| 373 if (/*global.params.useAssert &&*/ sc->module) | |
| 374 { | |
| 375 // Generate this function as it may be used | |
| 376 // when template is instantiated in other modules | |
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377 |
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378 // FIXME: LDC |
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379 //sc->module->toModuleAssert(); |
| 336 | 380 } |
| 381 | |
| 382 /* Remember Scope for later instantiations, but make | |
| 383 * a copy since attributes can change. | |
| 384 */ | |
| 385 this->scope = new Scope(*sc); | |
| 386 this->scope->setNoFree(); | |
| 387 | |
| 388 // Set up scope for parameters | |
| 389 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 390 paramsym->parent = sc->parent; | |
| 391 Scope *paramscope = sc->push(paramsym); | |
| 392 paramscope->parameterSpecialization = 1; | |
|
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393 paramscope->stc = 0; |
| 336 | 394 |
| 395 if (global.params.doDocComments) | |
| 396 { | |
| 397 origParameters = new TemplateParameters(); | |
| 398 origParameters->setDim(parameters->dim); | |
| 399 for (int i = 0; i < parameters->dim; i++) | |
| 400 { | |
| 401 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 402 origParameters->data[i] = (void *)tp->syntaxCopy(); | |
| 403 } | |
| 404 } | |
| 405 | |
| 406 for (int i = 0; i < parameters->dim; i++) | |
| 407 { | |
| 408 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 409 | |
| 410 tp->declareParameter(paramscope); | |
| 411 } | |
| 412 | |
| 413 for (int i = 0; i < parameters->dim; i++) | |
| 414 { | |
| 415 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 416 | |
| 417 tp->semantic(paramscope); | |
| 418 if (i + 1 != parameters->dim && tp->isTemplateTupleParameter()) | |
| 419 error("template tuple parameter must be last one"); | |
| 420 } | |
| 421 | |
| 422 paramscope->pop(); | |
| 423 | |
| 424 if (members) | |
| 425 { | |
| 426 Dsymbol *s; | |
| 427 if (Dsymbol::oneMembers(members, &s)) | |
| 428 { | |
| 429 if (s && s->ident && s->ident->equals(ident)) | |
| 430 { | |
| 431 onemember = s; | |
| 432 s->parent = this; | |
| 433 } | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 /* BUG: should check: | |
| 438 * o no virtual functions or non-static data members of classes | |
| 439 */ | |
| 440 } | |
| 441 | |
| 442 const char *TemplateDeclaration::kind() | |
| 443 { | |
| 444 return (onemember && onemember->isAggregateDeclaration()) | |
| 445 ? onemember->kind() | |
| 446 : (char *)"template"; | |
| 447 } | |
| 448 | |
| 449 /********************************** | |
| 450 * Overload existing TemplateDeclaration 'this' with the new one 's'. | |
| 451 * Return !=0 if successful; i.e. no conflict. | |
| 452 */ | |
| 453 | |
| 454 int TemplateDeclaration::overloadInsert(Dsymbol *s) | |
| 455 { | |
| 456 TemplateDeclaration **pf; | |
| 457 TemplateDeclaration *f; | |
| 458 | |
| 459 #if LOG | |
| 460 printf("TemplateDeclaration::overloadInsert('%s')\n", s->toChars()); | |
| 461 #endif | |
| 462 f = s->isTemplateDeclaration(); | |
| 463 if (!f) | |
| 464 return FALSE; | |
| 465 TemplateDeclaration *pthis = this; | |
| 466 for (pf = &pthis; *pf; pf = &(*pf)->overnext) | |
| 467 { | |
| 468 #if 0 | |
| 469 // Conflict if TemplateParameter's match | |
| 470 // Will get caught anyway later with TemplateInstance, but | |
| 471 // should check it now. | |
| 472 TemplateDeclaration *f2 = *pf; | |
| 473 | |
| 474 if (f->parameters->dim != f2->parameters->dim) | |
| 475 goto Lcontinue; | |
| 476 | |
| 477 for (int i = 0; i < f->parameters->dim; i++) | |
| 478 { TemplateParameter *p1 = (TemplateParameter *)f->parameters->data[i]; | |
| 479 TemplateParameter *p2 = (TemplateParameter *)f2->parameters->data[i]; | |
| 480 | |
| 481 if (!p1->overloadMatch(p2)) | |
| 482 goto Lcontinue; | |
| 483 } | |
| 484 | |
| 485 #if LOG | |
| 486 printf("\tfalse: conflict\n"); | |
| 487 #endif | |
| 488 return FALSE; | |
| 489 | |
| 490 Lcontinue: | |
| 491 ; | |
| 492 #endif | |
| 493 } | |
| 494 | |
| 495 f->overroot = this; | |
| 496 *pf = f; | |
| 497 #if LOG | |
| 498 printf("\ttrue: no conflict\n"); | |
| 499 #endif | |
| 500 return TRUE; | |
| 501 } | |
| 502 | |
| 503 /*************************************** | |
| 504 * Given that ti is an instance of this TemplateDeclaration, | |
| 505 * deduce the types of the parameters to this, and store | |
| 506 * those deduced types in dedtypes[]. | |
| 507 * Input: | |
| 508 * flag 1: don't do semantic() because of dummy types | |
| 509 * 2: don't change types in matchArg() | |
| 510 * Output: | |
| 511 * dedtypes deduced arguments | |
| 512 * Return match level. | |
| 513 */ | |
| 514 | |
| 515 MATCH TemplateDeclaration::matchWithInstance(TemplateInstance *ti, | |
| 516 Objects *dedtypes, int flag) | |
| 517 { MATCH m; | |
| 518 int dedtypes_dim = dedtypes->dim; | |
| 519 | |
| 520 #define LOGM 0 | |
| 521 #if LOGM | |
| 522 printf("\n+TemplateDeclaration::matchWithInstance(this = %s, ti = %s, flag = %d)\n", toChars(), ti->toChars(), flag); | |
| 523 #endif | |
| 524 | |
| 525 #if 0 | |
| 526 printf("dedtypes->dim = %d, parameters->dim = %d\n", dedtypes_dim, parameters->dim); | |
| 527 if (ti->tiargs->dim) | |
| 528 printf("ti->tiargs->dim = %d, [0] = %p\n", | |
| 529 ti->tiargs->dim, | |
| 530 ti->tiargs->data[0]); | |
| 531 #endif | |
| 532 dedtypes->zero(); | |
| 533 | |
| 534 int parameters_dim = parameters->dim; | |
| 535 int variadic = isVariadic() != NULL; | |
| 536 | |
| 537 // If more arguments than parameters, no match | |
| 538 if (ti->tiargs->dim > parameters_dim && !variadic) | |
| 539 { | |
| 540 #if LOGM | |
| 541 printf(" no match: more arguments than parameters\n"); | |
| 542 #endif | |
| 543 return MATCHnomatch; | |
| 544 } | |
| 545 | |
| 546 assert(dedtypes_dim == parameters_dim); | |
| 547 assert(dedtypes_dim >= ti->tiargs->dim || variadic); | |
| 548 | |
| 549 // Set up scope for parameters | |
| 550 assert((size_t)scope > 0x10000); | |
| 551 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 552 paramsym->parent = scope->parent; | |
| 553 Scope *paramscope = scope->push(paramsym); | |
|
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|
554 paramscope->stc = 0; |
| 336 | 555 |
| 556 // Attempt type deduction | |
| 557 m = MATCHexact; | |
| 558 for (int i = 0; i < dedtypes_dim; i++) | |
| 559 { MATCH m2; | |
| 560 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 561 Declaration *sparam; | |
| 562 | |
| 563 //printf("\targument [%d]\n", i); | |
| 564 #if LOGM | |
| 565 //printf("\targument [%d] is %s\n", i, oarg ? oarg->toChars() : "null"); | |
| 566 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 567 if (ttp) | |
| 568 printf("\tparameter[%d] is %s : %s\n", i, tp->ident->toChars(), ttp->specType ? ttp->specType->toChars() : ""); | |
| 569 #endif | |
| 570 | |
| 571 #if DMDV1 | |
| 572 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam); | |
| 573 #else | |
| 574 m2 = tp->matchArg(paramscope, ti->tiargs, i, parameters, dedtypes, &sparam, (flag & 2) ? 1 : 0); | |
| 575 | |
| 576 #endif | |
| 577 //printf("\tm2 = %d\n", m2); | |
| 578 | |
| 579 if (m2 == MATCHnomatch) | |
| 580 { | |
| 581 #if 0 | |
| 582 printf("\tmatchArg() for parameter %i failed\n", i); | |
| 583 #endif | |
| 584 goto Lnomatch; | |
| 585 } | |
| 586 | |
| 587 if (m2 < m) | |
| 588 m = m2; | |
| 589 | |
| 590 if (!flag) | |
| 591 sparam->semantic(paramscope); | |
| 592 if (!paramscope->insert(sparam)) | |
| 593 goto Lnomatch; | |
| 594 } | |
| 595 | |
| 596 if (!flag) | |
| 597 { | |
|
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598 /* Any parameter left without a type gets the type of |
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599 * its corresponding arg |
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600 */ |
| 336 | 601 for (int i = 0; i < dedtypes_dim; i++) |
| 602 { | |
| 603 if (!dedtypes->data[i]) | |
| 604 { assert(i < ti->tiargs->dim); | |
| 605 dedtypes->data[i] = ti->tiargs->data[i]; | |
| 606 } | |
| 607 } | |
| 608 } | |
| 609 | |
|
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610 #if DMDV2 |
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611 if (m && constraint && !(flag & 1)) |
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612 { /* Check to see if constraint is satisfied. |
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|
613 */ |
|
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|
614 Expression *e = constraint->syntaxCopy(); |
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615 paramscope->flags |= SCOPEstaticif; |
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616 e = e->semantic(paramscope); |
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617 e = e->optimize(WANTvalue | WANTinterpret); |
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618 if (e->isBool(TRUE)) |
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619 ; |
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620 else if (e->isBool(FALSE)) |
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|
621 goto Lnomatch; |
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622 else |
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623 { |
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624 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
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|
625 } |
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626 } |
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627 #endif |
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|
628 |
| 336 | 629 #if LOGM |
| 630 // Print out the results | |
| 631 printf("--------------------------\n"); | |
| 632 printf("template %s\n", toChars()); | |
| 633 printf("instance %s\n", ti->toChars()); | |
| 634 if (m) | |
| 635 { | |
| 636 for (int i = 0; i < dedtypes_dim; i++) | |
| 637 { | |
| 638 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 639 Object *oarg; | |
| 640 | |
| 641 printf(" [%d]", i); | |
| 642 | |
| 643 if (i < ti->tiargs->dim) | |
| 644 oarg = (Object *)ti->tiargs->data[i]; | |
| 645 else | |
| 646 oarg = NULL; | |
| 647 tp->print(oarg, (Object *)dedtypes->data[i]); | |
| 648 } | |
| 649 } | |
| 650 else | |
| 651 goto Lnomatch; | |
| 652 #endif | |
| 653 | |
| 654 #if LOGM | |
| 655 printf(" match = %d\n", m); | |
| 656 #endif | |
| 657 goto Lret; | |
| 658 | |
| 659 Lnomatch: | |
| 660 #if LOGM | |
| 661 printf(" no match\n"); | |
| 662 #endif | |
| 663 m = MATCHnomatch; | |
| 664 | |
| 665 Lret: | |
| 666 paramscope->pop(); | |
| 667 #if LOGM | |
| 668 printf("-TemplateDeclaration::matchWithInstance(this = %p, ti = %p) = %d\n", this, ti, m); | |
| 669 #endif | |
| 670 return m; | |
| 671 } | |
| 672 | |
| 673 /******************************************** | |
| 674 * Determine partial specialization order of 'this' vs td2. | |
| 675 * Returns: | |
| 676 * 1 this is at least as specialized as td2 | |
| 677 * 0 td2 is more specialized than this | |
| 678 */ | |
| 679 | |
| 680 int TemplateDeclaration::leastAsSpecialized(TemplateDeclaration *td2) | |
| 681 { | |
| 682 /* This works by taking the template parameters to this template | |
| 683 * declaration and feeding them to td2 as if it were a template | |
| 684 * instance. | |
| 685 * If it works, then this template is at least as specialized | |
| 686 * as td2. | |
| 687 */ | |
| 688 | |
| 689 TemplateInstance ti(0, ident); // create dummy template instance | |
| 690 Objects dedtypes; | |
| 691 | |
| 692 #define LOG_LEASTAS 0 | |
| 693 | |
| 694 #if LOG_LEASTAS | |
| 695 printf("%s.leastAsSpecialized(%s)\n", toChars(), td2->toChars()); | |
| 696 #endif | |
| 697 | |
| 698 // Set type arguments to dummy template instance to be types | |
| 699 // generated from the parameters to this template declaration | |
| 700 ti.tiargs = new Objects(); | |
| 701 ti.tiargs->setDim(parameters->dim); | |
| 702 for (int i = 0; i < ti.tiargs->dim; i++) | |
| 703 { | |
| 704 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 705 | |
| 706 void *p = tp->dummyArg(); | |
| 707 if (p) | |
| 708 ti.tiargs->data[i] = p; | |
| 709 else | |
| 710 ti.tiargs->setDim(i); | |
| 711 } | |
| 712 | |
| 713 // Temporary Array to hold deduced types | |
| 714 //dedtypes.setDim(parameters->dim); | |
| 715 dedtypes.setDim(td2->parameters->dim); | |
| 716 | |
| 717 // Attempt a type deduction | |
| 718 if (td2->matchWithInstance(&ti, &dedtypes, 1)) | |
| 719 { | |
| 720 /* A non-variadic template is more specialized than a | |
| 721 * variadic one. | |
| 722 */ | |
| 723 if (isVariadic() && !td2->isVariadic()) | |
| 724 goto L1; | |
| 725 | |
| 726 #if LOG_LEASTAS | |
| 727 printf(" matches, so is least as specialized\n"); | |
| 728 #endif | |
| 729 return 1; | |
| 730 } | |
| 731 L1: | |
| 732 #if LOG_LEASTAS | |
| 733 printf(" doesn't match, so is not as specialized\n"); | |
| 734 #endif | |
| 735 return 0; | |
| 736 } | |
| 737 | |
| 738 | |
| 739 /************************************************* | |
| 740 * Match function arguments against a specific template function. | |
| 741 * Input: | |
|
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diff
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|
742 * loc instantiation location |
| 336 | 743 * targsi Expression/Type initial list of template arguments |
|
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|
744 * ethis 'this' argument if !NULL |
| 336 | 745 * fargs arguments to function |
| 746 * Output: | |
| 747 * dedargs Expression/Type deduced template arguments | |
| 748 * Returns: | |
| 749 * match level | |
| 750 */ | |
| 751 | |
|
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|
752 MATCH TemplateDeclaration::deduceFunctionTemplateMatch(Loc loc, Objects *targsi, |
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|
753 Expression *ethis, Expressions *fargs, |
| 336 | 754 Objects *dedargs) |
| 755 { | |
| 756 size_t i; | |
| 757 size_t nfparams; | |
| 758 size_t nfargs; | |
| 759 size_t nargsi; // array size of targsi | |
| 760 int fptupindex = -1; | |
| 761 int tuple_dim = 0; | |
| 762 MATCH match = MATCHexact; | |
| 763 FuncDeclaration *fd = onemember->toAlias()->isFuncDeclaration(); | |
| 764 TypeFunction *fdtype; // type of fd | |
| 765 TemplateTupleParameter *tp; | |
| 766 Objects dedtypes; // for T:T*, the dedargs is the T*, dedtypes is the T | |
| 767 | |
| 768 #if 0 | |
| 769 printf("\nTemplateDeclaration::deduceFunctionTemplateMatch() %s\n", toChars()); | |
| 770 for (i = 0; i < fargs->dim; i++) | |
| 771 { Expression *e = (Expression *)fargs->data[i]; | |
| 772 printf("\tfarg[%d] is %s, type is %s\n", i, e->toChars(), e->type->toChars()); | |
| 773 } | |
| 774 #endif | |
| 775 | |
| 776 assert((size_t)scope > 0x10000); | |
| 777 | |
| 778 dedargs->setDim(parameters->dim); | |
| 779 dedargs->zero(); | |
| 780 | |
| 781 dedtypes.setDim(parameters->dim); | |
| 782 dedtypes.zero(); | |
| 783 | |
| 784 // Set up scope for parameters | |
| 785 ScopeDsymbol *paramsym = new ScopeDsymbol(); | |
| 786 paramsym->parent = scope->parent; | |
| 787 Scope *paramscope = scope->push(paramsym); | |
| 788 | |
| 789 tp = isVariadic(); | |
| 790 | |
| 791 nargsi = 0; | |
| 792 if (targsi) | |
| 793 { // Set initial template arguments | |
| 794 | |
| 795 nargsi = targsi->dim; | |
| 796 if (nargsi > parameters->dim) | |
| 797 { if (!tp) | |
| 798 goto Lnomatch; | |
| 799 dedargs->setDim(nargsi); | |
| 800 dedargs->zero(); | |
| 801 } | |
| 802 | |
| 803 memcpy(dedargs->data, targsi->data, nargsi * sizeof(*dedargs->data)); | |
| 804 | |
| 805 for (i = 0; i < nargsi; i++) | |
|
1103
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diff
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|
806 { assert(i < parameters->dim); |
|
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changeset
|
807 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
| 336 | 808 MATCH m; |
| 809 Declaration *sparam; | |
| 810 | |
| 811 m = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam); | |
| 812 //printf("\tdeduceType m = %d\n", m); | |
| 813 if (m == MATCHnomatch) | |
| 814 goto Lnomatch; | |
| 815 if (m < match) | |
| 816 match = m; | |
| 817 | |
| 818 sparam->semantic(paramscope); | |
| 819 if (!paramscope->insert(sparam)) | |
| 820 goto Lnomatch; | |
| 821 } | |
| 822 } | |
| 823 | |
| 824 assert(fd->type->ty == Tfunction); | |
| 825 fdtype = (TypeFunction *)fd->type; | |
| 826 | |
| 827 nfparams = Argument::dim(fdtype->parameters); // number of function parameters | |
| 828 nfargs = fargs->dim; // number of function arguments | |
| 829 | |
| 830 /* Check for match of function arguments with variadic template | |
| 831 * parameter, such as: | |
| 832 * | |
| 833 * template Foo(T, A...) { void Foo(T t, A a); } | |
| 834 * void main() { Foo(1,2,3); } | |
| 835 */ | |
| 836 tp = isVariadic(); | |
| 837 if (tp) // if variadic | |
| 838 { | |
| 839 if (nfparams == 0) // if no function parameters | |
| 840 { | |
| 841 Tuple *t = new Tuple(); | |
| 842 //printf("t = %p\n", t); | |
| 843 dedargs->data[parameters->dim - 1] = (void *)t; | |
|
1103
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- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
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diff
changeset
|
844 declareParameter(paramscope, tp, t); |
| 336 | 845 goto L2; |
| 846 } | |
| 847 else if (nfargs < nfparams - 1) | |
| 848 goto L1; | |
| 849 else | |
| 850 { | |
| 851 /* Figure out which of the function parameters matches | |
| 852 * the tuple template parameter. Do this by matching | |
| 853 * type identifiers. | |
| 854 * Set the index of this function parameter to fptupindex. | |
| 855 */ | |
| 856 for (fptupindex = 0; fptupindex < nfparams; fptupindex++) | |
| 857 { | |
| 858 Argument *fparam = (Argument *)fdtype->parameters->data[fptupindex]; | |
| 859 if (fparam->type->ty != Tident) | |
| 860 continue; | |
| 861 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 862 if (!tp->ident->equals(tid->ident) || tid->idents.dim) | |
| 863 continue; | |
| 864 | |
| 865 if (fdtype->varargs) // variadic function doesn't | |
| 866 goto Lnomatch; // go with variadic template | |
| 867 | |
| 868 /* The types of the function arguments | |
| 869 * now form the tuple argument. | |
| 870 */ | |
| 871 Tuple *t = new Tuple(); | |
| 872 dedargs->data[parameters->dim - 1] = (void *)t; | |
| 873 | |
| 874 tuple_dim = nfargs - (nfparams - 1); | |
| 875 t->objects.setDim(tuple_dim); | |
| 876 for (i = 0; i < tuple_dim; i++) | |
| 877 { Expression *farg = (Expression *)fargs->data[fptupindex + i]; | |
| 878 t->objects.data[i] = (void *)farg->type; | |
| 879 } | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
1089
diff
changeset
|
880 declareParameter(paramscope, tp, t); |
| 336 | 881 goto L2; |
| 882 } | |
| 883 fptupindex = -1; | |
| 884 } | |
| 885 } | |
| 886 | |
| 887 L1: | |
| 888 if (nfparams == nfargs) | |
| 889 ; | |
| 890 else if (nfargs > nfparams) | |
| 891 { | |
| 892 if (fdtype->varargs == 0) | |
| 893 goto Lnomatch; // too many args, no match | |
| 894 match = MATCHconvert; // match ... with a conversion | |
| 895 } | |
| 896 | |
| 897 L2: | |
|
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|
898 #if DMDV2 |
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|
899 // Match 'ethis' to any TemplateThisParameter's |
|
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|
900 if (ethis) |
|
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|
901 { |
|
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|
902 for (size_t i = 0; i < parameters->dim; i++) |
|
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|
903 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; |
|
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|
904 TemplateThisParameter *ttp = tp->isTemplateThisParameter(); |
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|
905 if (ttp) |
|
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|
906 { MATCH m; |
|
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|
907 |
|
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|
908 Type *t = new TypeIdentifier(0, ttp->ident); |
|
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|
909 m = ethis->type->deduceType(scope, t, parameters, &dedtypes); |
|
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|
910 if (!m) |
|
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|
911 goto Lnomatch; |
|
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|
912 if (m < match) |
|
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|
913 match = m; // pick worst match |
|
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|
914 } |
|
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|
915 } |
|
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|
916 } |
|
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|
917 #endif |
|
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|
918 |
| 336 | 919 // Loop through the function parameters |
| 920 for (i = 0; i < nfparams; i++) | |
| 921 { | |
| 922 /* Skip over function parameters which wound up | |
| 923 * as part of a template tuple parameter. | |
| 924 */ | |
| 925 if (i == fptupindex) | |
| 926 { if (fptupindex == nfparams - 1) | |
| 927 break; | |
| 928 i += tuple_dim - 1; | |
| 929 continue; | |
| 930 } | |
| 931 | |
| 932 Argument *fparam = Argument::getNth(fdtype->parameters, i); | |
| 933 | |
| 934 if (i >= nfargs) // if not enough arguments | |
| 935 { | |
| 936 if (fparam->defaultArg) | |
| 937 { /* Default arguments do not participate in template argument | |
| 938 * deduction. | |
| 939 */ | |
| 940 goto Lmatch; | |
| 941 } | |
| 942 } | |
| 943 else | |
| 944 { Expression *farg = (Expression *)fargs->data[i]; | |
| 945 #if 0 | |
| 946 printf("\tfarg->type = %s\n", farg->type->toChars()); | |
| 947 printf("\tfparam->type = %s\n", fparam->type->toChars()); | |
| 948 #endif | |
| 949 | |
| 950 MATCH m; | |
| 951 m = farg->type->deduceType(scope, fparam->type, parameters, &dedtypes); | |
| 952 //printf("\tdeduceType m = %d\n", m); | |
| 953 | |
| 954 /* If no match, see if there's a conversion to a delegate | |
| 955 */ | |
| 956 if (!m && fparam->type->toBasetype()->ty == Tdelegate) | |
| 957 { | |
| 958 TypeDelegate *td = (TypeDelegate *)fparam->type->toBasetype(); | |
| 959 TypeFunction *tf = (TypeFunction *)td->next; | |
| 960 | |
| 961 if (!tf->varargs && Argument::dim(tf->parameters) == 0) | |
| 962 { | |
| 963 m = farg->type->deduceType(scope, tf->next, parameters, &dedtypes); | |
| 964 if (!m && tf->next->toBasetype()->ty == Tvoid) | |
| 965 m = MATCHconvert; | |
| 966 } | |
| 967 //printf("\tm2 = %d\n", m); | |
| 968 } | |
| 969 | |
| 970 if (m) | |
| 971 { if (m < match) | |
| 972 match = m; // pick worst match | |
| 973 continue; | |
| 974 } | |
| 975 } | |
| 976 | |
| 977 /* The following code for variadic arguments closely | |
| 978 * matches TypeFunction::callMatch() | |
| 979 */ | |
| 980 if (!(fdtype->varargs == 2 && i + 1 == nfparams)) | |
| 981 goto Lnomatch; | |
| 982 | |
| 983 /* Check for match with function parameter T... | |
| 984 */ | |
| 985 Type *tb = fparam->type->toBasetype(); | |
| 986 switch (tb->ty) | |
| 987 { | |
| 988 // Perhaps we can do better with this, see TypeFunction::callMatch() | |
| 989 case Tsarray: | |
| 990 { TypeSArray *tsa = (TypeSArray *)tb; | |
| 991 integer_t sz = tsa->dim->toInteger(); | |
| 992 if (sz != nfargs - i) | |
| 993 goto Lnomatch; | |
| 994 } | |
| 995 case Tarray: | |
| 996 { TypeArray *ta = (TypeArray *)tb; | |
| 997 for (; i < nfargs; i++) | |
| 998 { | |
| 999 Expression *arg = (Expression *)fargs->data[i]; | |
| 1000 assert(arg); | |
| 1001 MATCH m; | |
| 1002 /* If lazy array of delegates, | |
| 1003 * convert arg(s) to delegate(s) | |
| 1004 */ | |
| 1005 Type *tret = fparam->isLazyArray(); | |
| 1006 if (tret) | |
| 1007 { | |
| 1008 if (ta->next->equals(arg->type)) | |
| 1009 { m = MATCHexact; | |
| 1010 } | |
| 1011 else | |
| 1012 { | |
| 1013 m = arg->implicitConvTo(tret); | |
| 1014 if (m == MATCHnomatch) | |
| 1015 { | |
| 1016 if (tret->toBasetype()->ty == Tvoid) | |
| 1017 m = MATCHconvert; | |
| 1018 } | |
| 1019 } | |
| 1020 } | |
| 1021 else | |
| 1022 { | |
| 1023 m = arg->type->deduceType(scope, ta->next, parameters, &dedtypes); | |
| 1024 //m = arg->implicitConvTo(ta->next); | |
| 1025 } | |
| 1026 if (m == MATCHnomatch) | |
| 1027 goto Lnomatch; | |
| 1028 if (m < match) | |
| 1029 match = m; | |
| 1030 } | |
| 1031 goto Lmatch; | |
| 1032 } | |
| 1033 case Tclass: | |
| 1034 case Tident: | |
| 1035 goto Lmatch; | |
| 1036 | |
| 1037 default: | |
| 1038 goto Lnomatch; | |
| 1039 } | |
| 1040 } | |
| 1041 | |
| 1042 Lmatch: | |
| 1043 | |
| 1044 /* Fill in any missing arguments with their defaults. | |
| 1045 */ | |
| 1046 for (i = nargsi; i < dedargs->dim; i++) | |
| 1047 { | |
| 1048 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1049 //printf("tp[%d] = %s\n", i, tp->ident->toChars()); | |
| 1050 /* For T:T*, the dedargs is the T*, dedtypes is the T | |
| 1051 * But for function templates, we really need them to match | |
| 1052 */ | |
| 1053 Object *oarg = (Object *)dedargs->data[i]; | |
| 1054 Object *oded = (Object *)dedtypes.data[i]; | |
| 1055 //printf("1dedargs[%d] = %p, dedtypes[%d] = %p\n", i, oarg, i, oded); | |
| 1056 if (!oarg) | |
| 1057 { | |
| 1058 if (oded) | |
| 1059 { | |
| 1060 if (tp->specialization()) | |
| 1061 { /* The specialization can work as long as afterwards | |
| 1062 * the oded == oarg | |
| 1063 */ | |
| 1064 Declaration *sparam; | |
| 1065 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
|
1066 MATCH m2 = tp->matchArg(paramscope, dedargs, i, parameters, &dedtypes, &sparam, 0); |
| 336 | 1067 //printf("m2 = %d\n", m2); |
| 1068 if (!m2) | |
| 1069 goto Lnomatch; | |
| 1070 if (m2 < match) | |
| 1071 match = m2; // pick worst match | |
| 1072 if (dedtypes.data[i] != oded) | |
| 1073 error("specialization not allowed for deduced parameter %s", tp->ident->toChars()); | |
| 1074 } | |
| 1075 } | |
| 1076 else | |
|
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diff
changeset
|
1077 { oded = tp->defaultArg(loc, paramscope); |
| 336 | 1078 if (!oded) |
| 1079 goto Lnomatch; | |
| 1080 } | |
| 1081 declareParameter(paramscope, tp, oded); | |
| 1082 dedargs->data[i] = (void *)oded; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
|
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diff
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|
1086 #if DMDV2 |
|
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diff
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|
1087 if (constraint) |
|
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diff
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|
1088 { /* Check to see if constraint is satisfied. |
|
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diff
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|
1089 */ |
|
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diff
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|
1090 Expression *e = constraint->syntaxCopy(); |
|
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diff
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|
1091 paramscope->flags |= SCOPEstaticif; |
|
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diff
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|
1092 e = e->semantic(paramscope); |
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diff
changeset
|
1093 e = e->optimize(WANTvalue | WANTinterpret); |
|
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diff
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|
1094 if (e->isBool(TRUE)) |
|
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diff
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|
1095 ; |
|
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|
1096 else if (e->isBool(FALSE)) |
|
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diff
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|
1097 goto Lnomatch; |
|
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diff
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|
1098 else |
|
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|
1099 { |
|
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diff
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|
1100 e->error("constraint %s is not constant or does not evaluate to a bool", e->toChars()); |
|
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|
1101 } |
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|
1102 } |
|
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|
1103 #endif |
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|
1104 |
| 336 | 1105 #if 0 |
| 1106 for (i = 0; i < dedargs->dim; i++) | |
| 1107 { Type *t = (Type *)dedargs->data[i]; | |
| 1108 printf("\tdedargs[%d] = %d, %s\n", i, t->dyncast(), t->toChars()); | |
| 1109 } | |
| 1110 #endif | |
| 1111 | |
| 1112 paramscope->pop(); | |
| 1113 //printf("\tmatch %d\n", match); | |
| 1114 return match; | |
| 1115 | |
| 1116 Lnomatch: | |
| 1117 paramscope->pop(); | |
| 1118 //printf("\tnomatch\n"); | |
| 1119 return MATCHnomatch; | |
| 1120 } | |
| 1121 | |
| 1122 /************************************************** | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
1123 * Declare template parameter tp with value o, and install it in the scope sc. |
| 336 | 1124 */ |
| 1125 | |
| 1126 void TemplateDeclaration::declareParameter(Scope *sc, TemplateParameter *tp, Object *o) | |
| 1127 { | |
| 1128 //printf("TemplateDeclaration::declareParameter('%s', o = %p)\n", tp->ident->toChars(), o); | |
| 1129 | |
| 1130 Type *targ = isType(o); | |
| 1131 Expression *ea = isExpression(o); | |
| 1132 Dsymbol *sa = isDsymbol(o); | |
| 1133 Tuple *va = isTuple(o); | |
| 1134 | |
| 1135 Dsymbol *s; | |
| 1136 | |
| 1137 if (targ) | |
| 1138 { | |
| 1139 //printf("type %s\n", targ->toChars()); | |
| 1140 s = new AliasDeclaration(0, tp->ident, targ); | |
| 1141 } | |
| 1142 else if (sa) | |
| 1143 { | |
| 1144 //printf("Alias %s %s;\n", sa->ident->toChars(), tp->ident->toChars()); | |
| 1145 s = new AliasDeclaration(0, tp->ident, sa); | |
| 1146 } | |
| 1147 else if (ea) | |
| 1148 { | |
| 1149 // tdtypes.data[i] always matches ea here | |
| 1150 Initializer *init = new ExpInitializer(loc, ea); | |
| 1151 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1152 assert(tvp); | |
| 1153 | |
| 1154 VarDeclaration *v = new VarDeclaration(loc, tvp->valType, tp->ident, init); | |
| 1155 v->storage_class = STCconst; | |
| 1156 s = v; | |
| 1157 } | |
| 1158 else if (va) | |
| 1159 { | |
| 1160 //printf("\ttuple\n"); | |
| 1161 s = new TupleDeclaration(loc, tp->ident, &va->objects); | |
| 1162 } | |
| 1163 else | |
| 1164 { | |
| 1165 #ifdef DEBUG | |
| 1166 o->print(); | |
| 1167 #endif | |
| 1168 assert(0); | |
| 1169 } | |
| 1170 if (!sc->insert(s)) | |
| 1171 error("declaration %s is already defined", tp->ident->toChars()); | |
| 1172 s->semantic(sc); | |
| 1173 } | |
| 1174 | |
| 1175 /************************************** | |
| 1176 * Determine if TemplateDeclaration is variadic. | |
| 1177 */ | |
| 1178 | |
| 1179 TemplateTupleParameter *isVariadic(TemplateParameters *parameters) | |
| 1180 { size_t dim = parameters->dim; | |
| 1181 TemplateTupleParameter *tp = NULL; | |
| 1182 | |
| 1183 if (dim) | |
| 1184 tp = ((TemplateParameter *)parameters->data[dim - 1])->isTemplateTupleParameter(); | |
| 1185 return tp; | |
| 1186 } | |
| 1187 | |
| 1188 TemplateTupleParameter *TemplateDeclaration::isVariadic() | |
| 1189 { | |
| 1190 return ::isVariadic(parameters); | |
| 1191 } | |
| 1192 | |
| 1193 /*********************************** | |
| 1194 * We can overload templates. | |
| 1195 */ | |
| 1196 | |
| 1197 int TemplateDeclaration::isOverloadable() | |
| 1198 { | |
| 1199 return 1; | |
| 1200 } | |
| 1201 | |
| 1202 /************************************************* | |
| 1203 * Given function arguments, figure out which template function | |
| 1204 * to expand, and return that function. | |
| 1205 * If no match, give error message and return NULL. | |
| 1206 * Input: | |
| 1207 * sc instantiation scope | |
| 1208 * loc instantiation location | |
| 1209 * targsi initial list of template arguments | |
|
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diff
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|
1210 * ethis if !NULL, the 'this' pointer argument |
| 336 | 1211 * fargs arguments to function |
|
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|
1212 * flags 1: do not issue error message on no match, just return NULL |
| 336 | 1213 */ |
| 1214 | |
| 1215 FuncDeclaration *TemplateDeclaration::deduceFunctionTemplate(Scope *sc, Loc loc, | |
|
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|
1216 Objects *targsi, Expression *ethis, Expressions *fargs, int flags) |
| 336 | 1217 { |
| 1218 MATCH m_best = MATCHnomatch; | |
| 1219 TemplateDeclaration *td_ambig = NULL; | |
| 1220 TemplateDeclaration *td_best = NULL; | |
| 1221 Objects *tdargs = new Objects(); | |
| 1222 TemplateInstance *ti; | |
| 1223 FuncDeclaration *fd; | |
| 1224 | |
| 1225 #if 0 | |
| 1226 printf("TemplateDeclaration::deduceFunctionTemplate() %s\n", toChars()); | |
| 1227 printf(" targsi:\n"); | |
| 1228 if (targsi) | |
| 1229 { for (int i = 0; i < targsi->dim; i++) | |
| 1230 { Object *arg = (Object *)targsi->data[i]; | |
| 1231 printf("\t%s\n", arg->toChars()); | |
| 1232 } | |
| 1233 } | |
| 1234 printf(" fargs:\n"); | |
| 1235 for (int i = 0; i < fargs->dim; i++) | |
| 1236 { Expression *arg = (Expression *)fargs->data[i]; | |
| 1237 printf("\t%s %s\n", arg->type->toChars(), arg->toChars()); | |
| 1238 //printf("\tty = %d\n", arg->type->ty); | |
| 1239 } | |
| 1240 #endif | |
| 1241 | |
| 1242 for (TemplateDeclaration *td = this; td; td = td->overnext) | |
| 1243 { | |
| 1244 if (!td->scope) | |
| 1245 { | |
| 1246 error("forward reference to template %s", td->toChars()); | |
| 1247 goto Lerror; | |
| 1248 } | |
| 1249 if (!td->onemember || !td->onemember->toAlias()->isFuncDeclaration()) | |
| 1250 { | |
| 1251 error("is not a function template"); | |
| 1252 goto Lerror; | |
| 1253 } | |
| 1254 | |
| 1255 MATCH m; | |
| 1256 Objects dedargs; | |
| 1257 | |
|
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1258 m = td->deduceFunctionTemplateMatch(loc, targsi, ethis, fargs, &dedargs); |
| 336 | 1259 //printf("deduceFunctionTemplateMatch = %d\n", m); |
| 1260 if (!m) // if no match | |
| 1261 continue; | |
| 1262 | |
| 1263 if (m < m_best) | |
| 1264 goto Ltd_best; | |
| 1265 if (m > m_best) | |
| 1266 goto Ltd; | |
| 1267 | |
| 1268 { | |
| 1269 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1270 int c1 = td->leastAsSpecialized(td_best); | |
| 1271 int c2 = td_best->leastAsSpecialized(td); | |
| 1272 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1273 | |
| 1274 if (c1 > c2) | |
| 1275 goto Ltd; | |
| 1276 else if (c1 < c2) | |
| 1277 goto Ltd_best; | |
| 1278 else | |
| 1279 goto Lambig; | |
| 1280 } | |
| 1281 | |
| 1282 Lambig: // td_best and td are ambiguous | |
| 1283 td_ambig = td; | |
| 1284 continue; | |
| 1285 | |
| 1286 Ltd_best: // td_best is the best match so far | |
| 1287 td_ambig = NULL; | |
| 1288 continue; | |
| 1289 | |
| 1290 Ltd: // td is the new best match | |
| 1291 td_ambig = NULL; | |
| 1292 assert((size_t)td->scope > 0x10000); | |
| 1293 td_best = td; | |
| 1294 m_best = m; | |
| 1295 tdargs->setDim(dedargs.dim); | |
| 1296 memcpy(tdargs->data, dedargs.data, tdargs->dim * sizeof(void *)); | |
| 1297 continue; | |
| 1298 } | |
| 1299 if (!td_best) | |
| 1300 { | |
| 1301 error(loc, "does not match any template declaration"); | |
| 1302 goto Lerror; | |
| 1303 } | |
| 1304 if (td_ambig) | |
| 1305 { | |
|
1103
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|
1306 error(loc, "matches more than one function template declaration:\n %s\nand:\n %s", |
|
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|
1307 td_best->toChars(), td_ambig->toChars()); |
| 336 | 1308 } |
| 1309 | |
| 1310 /* The best match is td_best with arguments tdargs. | |
| 1311 * Now instantiate the template. | |
| 1312 */ | |
| 1313 assert((size_t)td_best->scope > 0x10000); | |
| 1314 ti = new TemplateInstance(loc, td_best, tdargs); | |
| 1315 ti->semantic(sc); | |
| 1316 fd = ti->toAlias()->isFuncDeclaration(); | |
| 1317 if (!fd) | |
| 1318 goto Lerror; | |
| 1319 return fd; | |
| 1320 | |
| 1321 Lerror: | |
| 1322 { | |
|
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1323 HdrGenState hgs; |
|
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1324 |
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|
1325 OutBuffer bufa; |
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1326 Objects *args = targsi; |
|
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|
1327 if (args) |
|
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|
1328 { for (int i = 0; i < args->dim; i++) |
|
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|
1329 { |
|
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|
1330 if (i) |
|
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|
1331 bufa.writeByte(','); |
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|
1332 Object *oarg = (Object *)args->data[i]; |
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1333 ObjectToCBuffer(&bufa, &hgs, oarg); |
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|
1334 } |
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1335 } |
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|
1336 |
| 336 | 1337 OutBuffer buf; |
| 1338 argExpTypesToCBuffer(&buf, fargs, &hgs); | |
|
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|
1339 error(loc, "cannot deduce template function from argument types !(%s)(%s)", |
|
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|
1340 bufa.toChars(), buf.toChars()); |
| 336 | 1341 } |
|
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|
1342 return NULL; |
| 336 | 1343 } |
| 1344 | |
| 1345 void TemplateDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1346 { | |
| 1347 #if 0 // Should handle template functions | |
| 1348 if (onemember && onemember->isFuncDeclaration()) | |
| 1349 buf->writestring("foo "); | |
| 1350 #endif | |
| 1351 buf->writestring(kind()); | |
| 1352 buf->writeByte(' '); | |
| 1353 buf->writestring(ident->toChars()); | |
| 1354 buf->writeByte('('); | |
| 1355 for (int i = 0; i < parameters->dim; i++) | |
| 1356 { | |
| 1357 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1358 if (hgs->ddoc) | |
| 1359 tp = (TemplateParameter *)origParameters->data[i]; | |
| 1360 if (i) | |
| 1361 buf->writeByte(','); | |
| 1362 tp->toCBuffer(buf, hgs); | |
| 1363 } | |
| 1364 buf->writeByte(')'); | |
|
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1365 #if DMDV2 |
|
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1366 if (constraint) |
|
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|
1367 { buf->writestring(" if ("); |
|
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|
1368 constraint->toCBuffer(buf, hgs); |
|
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|
1369 buf->writeByte(')'); |
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|
1370 } |
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|
1371 #endif |
| 336 | 1372 |
| 1373 if (hgs->hdrgen) | |
| 1374 { | |
| 1375 hgs->tpltMember++; | |
| 1376 buf->writenl(); | |
| 1377 buf->writebyte('{'); | |
| 1378 buf->writenl(); | |
| 1379 for (int i = 0; i < members->dim; i++) | |
| 1380 { | |
| 1381 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 1382 s->toCBuffer(buf, hgs); | |
| 1383 } | |
| 1384 buf->writebyte('}'); | |
| 1385 buf->writenl(); | |
| 1386 hgs->tpltMember--; | |
| 1387 } | |
| 1388 } | |
| 1389 | |
| 1390 | |
| 1391 char *TemplateDeclaration::toChars() | |
| 1392 { OutBuffer buf; | |
| 1393 HdrGenState hgs; | |
| 1394 | |
| 1395 memset(&hgs, 0, sizeof(hgs)); | |
| 1396 buf.writestring(ident->toChars()); | |
| 1397 buf.writeByte('('); | |
| 1398 for (int i = 0; i < parameters->dim; i++) | |
| 1399 { | |
| 1400 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1401 if (i) | |
| 1402 buf.writeByte(','); | |
| 1403 tp->toCBuffer(&buf, &hgs); | |
| 1404 } | |
| 1405 buf.writeByte(')'); | |
|
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|
1406 #if DMDV2 |
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|
1407 if (constraint) |
|
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|
1408 { buf.writestring(" if ("); |
|
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Merged DMD 1.038
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|
1409 constraint->toCBuffer(&buf, &hgs); |
|
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|
1410 buf.writeByte(')'); |
|
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|
1411 } |
|
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|
1412 #endif |
| 336 | 1413 buf.writeByte(0); |
| 1414 return (char *)buf.extractData(); | |
| 1415 } | |
| 1416 | |
| 1417 /* ======================== Type ============================================ */ | |
| 1418 | |
| 1419 /**** | |
| 1420 * Given an identifier, figure out which TemplateParameter it is. | |
| 1421 * Return -1 if not found. | |
| 1422 */ | |
| 1423 | |
| 1424 int templateIdentifierLookup(Identifier *id, TemplateParameters *parameters) | |
| 1425 { | |
| 1426 for (size_t i = 0; i < parameters->dim; i++) | |
| 1427 { TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1428 | |
| 1429 if (tp->ident->equals(id)) | |
| 1430 return i; | |
| 1431 } | |
| 1432 return -1; | |
| 1433 } | |
| 1434 | |
| 1435 int templateParameterLookup(Type *tparam, TemplateParameters *parameters) | |
| 1436 { | |
| 1437 assert(tparam->ty == Tident); | |
| 1438 TypeIdentifier *tident = (TypeIdentifier *)tparam; | |
| 1439 //printf("\ttident = '%s'\n", tident->toChars()); | |
| 1440 if (tident->idents.dim == 0) | |
| 1441 { | |
| 1442 return templateIdentifierLookup(tident->ident, parameters); | |
| 1443 } | |
| 1444 return -1; | |
| 1445 } | |
| 1446 | |
| 1447 /* These form the heart of template argument deduction. | |
| 1448 * Given 'this' being the type argument to the template instance, | |
| 1449 * it is matched against the template declaration parameter specialization | |
| 1450 * 'tparam' to determine the type to be used for the parameter. | |
| 1451 * Example: | |
| 1452 * template Foo(T:T*) // template declaration | |
| 1453 * Foo!(int*) // template instantiation | |
| 1454 * Input: | |
| 1455 * this = int* | |
| 1456 * tparam = T | |
| 1457 * parameters = [ T:T* ] // Array of TemplateParameter's | |
| 1458 * Output: | |
| 1459 * dedtypes = [ int ] // Array of Expression/Type's | |
| 1460 */ | |
| 1461 | |
| 1462 MATCH Type::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1463 Objects *dedtypes) | |
| 1464 { | |
|
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diff
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|
1465 #if 0 |
|
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Merged DMD 1.038
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diff
changeset
|
1466 printf("Type::deduceType()\n"); |
|
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Merged DMD 1.038
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diff
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|
1467 printf("\tthis = %d, ", ty); print(); |
|
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Merged DMD 1.038
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diff
changeset
|
1468 printf("\ttparam = %d, ", tparam->ty); tparam->print(); |
|
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Merged DMD 1.038
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diff
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|
1469 #endif |
| 336 | 1470 if (!tparam) |
| 1471 goto Lnomatch; | |
| 1472 | |
| 1473 if (this == tparam) | |
| 1474 goto Lexact; | |
| 1475 | |
| 1476 if (tparam->ty == Tident) | |
| 1477 { | |
| 1478 // Determine which parameter tparam is | |
| 1479 int i = templateParameterLookup(tparam, parameters); | |
| 1480 if (i == -1) | |
| 1481 { | |
| 1482 if (!sc) | |
| 1483 goto Lnomatch; | |
| 1484 | |
| 1485 /* Need a loc to go with the semantic routine. | |
| 1486 */ | |
| 1487 Loc loc; | |
| 1488 if (parameters->dim) | |
| 1489 { | |
| 1490 TemplateParameter *tp = (TemplateParameter *)parameters->data[0]; | |
| 1491 loc = tp->loc; | |
| 1492 } | |
| 1493 | |
| 1494 /* BUG: what if tparam is a template instance, that | |
| 1495 * has as an argument another Tident? | |
| 1496 */ | |
| 1497 tparam = tparam->semantic(loc, sc); | |
| 1498 assert(tparam->ty != Tident); | |
| 1499 return deduceType(sc, tparam, parameters, dedtypes); | |
| 1500 } | |
| 1501 | |
| 1502 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1503 | |
| 1504 // Found the corresponding parameter tp | |
| 1505 if (!tp->isTemplateTypeParameter()) | |
| 1506 goto Lnomatch; | |
| 1507 Type *at = (Type *)dedtypes->data[i]; | |
| 1508 if (!at) | |
| 1509 { | |
| 1510 dedtypes->data[i] = (void *)this; | |
| 1511 goto Lexact; | |
| 1512 } | |
| 1513 if (equals(at)) | |
| 1514 goto Lexact; | |
| 1515 else if (ty == Tclass && at->ty == Tclass) | |
| 1516 { | |
| 1517 return (MATCH) implicitConvTo(at); | |
| 1518 } | |
| 1519 else if (ty == Tsarray && at->ty == Tarray && | |
| 1520 nextOf()->equals(at->nextOf())) | |
| 1521 { | |
| 1522 goto Lexact; | |
| 1523 } | |
| 1524 else | |
| 1525 goto Lnomatch; | |
| 1526 } | |
| 1527 | |
| 1528 if (ty != tparam->ty) | |
| 1529 return implicitConvTo(tparam); | |
| 1530 // goto Lnomatch; | |
| 1531 | |
| 1532 if (nextOf()) | |
| 1533 return nextOf()->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1534 | |
| 1535 Lexact: | |
| 1536 return MATCHexact; | |
| 1537 | |
| 1538 Lnomatch: | |
| 1539 return MATCHnomatch; | |
| 1540 } | |
| 1541 | |
| 1542 MATCH TypeSArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, | |
| 1543 Objects *dedtypes) | |
| 1544 { | |
| 1545 #if 0 | |
| 1546 printf("TypeSArray::deduceType()\n"); | |
| 1547 printf("\tthis = %d, ", ty); print(); | |
| 1548 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1549 #endif | |
| 1550 | |
| 1551 // Extra check that array dimensions must match | |
| 1552 if (tparam) | |
| 1553 { | |
| 1554 if (tparam->ty == Tsarray) | |
| 1555 { | |
| 1556 TypeSArray *tp = (TypeSArray *)tparam; | |
| 1557 | |
| 1558 if (tp->dim->op == TOKvar && | |
| 1559 ((VarExp *)tp->dim)->var->storage_class & STCtemplateparameter) | |
| 1560 { int i = templateIdentifierLookup(((VarExp *)tp->dim)->var->ident, parameters); | |
| 1561 // This code matches code in TypeInstance::deduceType() | |
| 1562 if (i == -1) | |
| 1563 goto Lnomatch; | |
| 1564 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1565 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1566 if (!tvp) | |
| 1567 goto Lnomatch; | |
| 1568 Expression *e = (Expression *)dedtypes->data[i]; | |
| 1569 if (e) | |
| 1570 { | |
| 1571 if (!dim->equals(e)) | |
| 1572 goto Lnomatch; | |
| 1573 } | |
| 1574 else | |
| 1575 { Type *vt = tvp->valType->semantic(0, sc); | |
| 1576 MATCH m = (MATCH)dim->implicitConvTo(vt); | |
| 1577 if (!m) | |
| 1578 goto Lnomatch; | |
| 1579 dedtypes->data[i] = dim; | |
| 1580 } | |
| 1581 } | |
| 1582 else if (dim->toInteger() != tp->dim->toInteger()) | |
| 1583 return MATCHnomatch; | |
| 1584 } | |
| 1585 else if (tparam->ty == Taarray) | |
| 1586 { | |
| 1587 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1588 if (tp->index->ty == Tident) | |
| 1589 { TypeIdentifier *tident = (TypeIdentifier *)tp->index; | |
| 1590 | |
| 1591 if (tident->idents.dim == 0) | |
| 1592 { Identifier *id = tident->ident; | |
| 1593 | |
| 1594 for (size_t i = 0; i < parameters->dim; i++) | |
| 1595 { | |
| 1596 TemplateParameter *tp = (TemplateParameter *)parameters->data[i]; | |
| 1597 | |
| 1598 if (tp->ident->equals(id)) | |
| 1599 { // Found the corresponding template parameter | |
| 1600 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 1601 if (!tvp || !tvp->valType->isintegral()) | |
| 1602 goto Lnomatch; | |
| 1603 | |
| 1604 if (dedtypes->data[i]) | |
| 1605 { | |
| 1606 if (!dim->equals((Object *)dedtypes->data[i])) | |
| 1607 goto Lnomatch; | |
| 1608 } | |
| 1609 else | |
| 1610 { dedtypes->data[i] = (void *)dim; | |
| 1611 } | |
| 1612 return next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1613 } | |
| 1614 } | |
| 1615 } | |
| 1616 } | |
| 1617 } | |
| 1618 else if (tparam->ty == Tarray) | |
| 1619 { MATCH m; | |
| 1620 | |
| 1621 m = next->deduceType(sc, tparam->nextOf(), parameters, dedtypes); | |
| 1622 if (m == MATCHexact) | |
| 1623 m = MATCHconvert; | |
| 1624 return m; | |
| 1625 } | |
| 1626 } | |
| 1627 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1628 | |
| 1629 Lnomatch: | |
| 1630 return MATCHnomatch; | |
| 1631 } | |
| 1632 | |
| 1633 MATCH TypeAArray::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1634 { | |
| 1635 #if 0 | |
| 1636 printf("TypeAArray::deduceType()\n"); | |
| 1637 printf("\tthis = %d, ", ty); print(); | |
| 1638 printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1639 #endif | |
| 1640 | |
| 1641 // Extra check that index type must match | |
| 1642 if (tparam && tparam->ty == Taarray) | |
| 1643 { | |
| 1644 TypeAArray *tp = (TypeAArray *)tparam; | |
| 1645 if (!index->deduceType(sc, tp->index, parameters, dedtypes)) | |
| 1646 { | |
| 1647 return MATCHnomatch; | |
| 1648 } | |
| 1649 } | |
| 1650 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1651 } | |
| 1652 | |
| 1653 MATCH TypeFunction::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1654 { | |
| 1655 //printf("TypeFunction::deduceType()\n"); | |
| 1656 //printf("\tthis = %d, ", ty); print(); | |
| 1657 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1658 | |
| 1659 // Extra check that function characteristics must match | |
| 1660 if (tparam && tparam->ty == Tfunction) | |
| 1661 { | |
| 1662 TypeFunction *tp = (TypeFunction *)tparam; | |
| 1663 if (varargs != tp->varargs || | |
| 1664 linkage != tp->linkage) | |
| 1665 return MATCHnomatch; | |
| 1666 | |
| 1667 size_t nfargs = Argument::dim(this->parameters); | |
| 1668 size_t nfparams = Argument::dim(tp->parameters); | |
| 1669 | |
| 1670 /* See if tuple match | |
| 1671 */ | |
| 1672 if (nfparams > 0 && nfargs >= nfparams - 1) | |
| 1673 { | |
| 1674 /* See if 'A' of the template parameter matches 'A' | |
| 1675 * of the type of the last function parameter. | |
| 1676 */ | |
| 1677 Argument *fparam = (Argument *)tp->parameters->data[nfparams - 1]; | |
| 1678 if (fparam->type->ty != Tident) | |
| 1679 goto L1; | |
| 1680 TypeIdentifier *tid = (TypeIdentifier *)fparam->type; | |
| 1681 if (tid->idents.dim) | |
| 1682 goto L1; | |
| 1683 | |
| 1684 /* Look through parameters to find tuple matching tid->ident | |
| 1685 */ | |
| 1686 size_t tupi = 0; | |
| 1687 for (; 1; tupi++) | |
| 1688 { if (tupi == parameters->dim) | |
| 1689 goto L1; | |
| 1690 TemplateParameter *t = (TemplateParameter *)parameters->data[tupi]; | |
| 1691 TemplateTupleParameter *tup = t->isTemplateTupleParameter(); | |
| 1692 if (tup && tup->ident->equals(tid->ident)) | |
| 1693 break; | |
| 1694 } | |
| 1695 | |
| 1696 /* The types of the function arguments [nfparams - 1 .. nfargs] | |
| 1697 * now form the tuple argument. | |
| 1698 */ | |
| 1699 int tuple_dim = nfargs - (nfparams - 1); | |
| 1700 | |
| 1701 /* See if existing tuple, and whether it matches or not | |
| 1702 */ | |
| 1703 Object *o = (Object *)dedtypes->data[tupi]; | |
| 1704 if (o) | |
| 1705 { // Existing deduced argument must be a tuple, and must match | |
| 1706 Tuple *t = isTuple(o); | |
| 1707 if (!t || t->objects.dim != tuple_dim) | |
| 1708 return MATCHnomatch; | |
| 1709 for (size_t i = 0; i < tuple_dim; i++) | |
| 1710 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1711 if (!arg->type->equals((Object *)t->objects.data[i])) | |
| 1712 return MATCHnomatch; | |
| 1713 } | |
| 1714 } | |
| 1715 else | |
| 1716 { // Create new tuple | |
| 1717 Tuple *t = new Tuple(); | |
| 1718 t->objects.setDim(tuple_dim); | |
| 1719 for (size_t i = 0; i < tuple_dim; i++) | |
| 1720 { Argument *arg = Argument::getNth(this->parameters, nfparams - 1 + i); | |
| 1721 t->objects.data[i] = (void *)arg->type; | |
| 1722 } | |
| 1723 dedtypes->data[tupi] = (void *)t; | |
| 1724 } | |
| 1725 nfparams--; // don't consider the last parameter for type deduction | |
| 1726 goto L2; | |
| 1727 } | |
| 1728 | |
| 1729 L1: | |
| 1730 if (nfargs != nfparams) | |
| 1731 return MATCHnomatch; | |
| 1732 L2: | |
| 1733 for (size_t i = 0; i < nfparams; i++) | |
| 1734 { | |
| 1735 Argument *a = Argument::getNth(this->parameters, i); | |
| 1736 Argument *ap = Argument::getNth(tp->parameters, i); | |
| 1737 if (a->storageClass != ap->storageClass || | |
| 1738 !a->type->deduceType(sc, ap->type, parameters, dedtypes)) | |
| 1739 return MATCHnomatch; | |
| 1740 } | |
| 1741 } | |
| 1742 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1743 } | |
| 1744 | |
| 1745 MATCH TypeIdentifier::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1746 { | |
| 1747 // Extra check | |
| 1748 if (tparam && tparam->ty == Tident) | |
| 1749 { | |
| 1750 TypeIdentifier *tp = (TypeIdentifier *)tparam; | |
| 1751 | |
| 1752 for (int i = 0; i < idents.dim; i++) | |
| 1753 { | |
| 1754 Identifier *id1 = (Identifier *)idents.data[i]; | |
| 1755 Identifier *id2 = (Identifier *)tp->idents.data[i]; | |
| 1756 | |
| 1757 if (!id1->equals(id2)) | |
| 1758 return MATCHnomatch; | |
| 1759 } | |
| 1760 } | |
| 1761 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1762 } | |
| 1763 | |
| 1764 MATCH TypeInstance::deduceType(Scope *sc, | |
| 1765 Type *tparam, TemplateParameters *parameters, | |
| 1766 Objects *dedtypes) | |
| 1767 { | |
| 1768 //printf("TypeInstance::deduceType(tparam = %s) %s\n", tparam->toChars(), toChars()); | |
| 1769 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1770 | |
| 1771 // Extra check | |
| 1772 if (tparam && tparam->ty == Tinstance) | |
| 1773 { | |
| 1774 TypeInstance *tp = (TypeInstance *)tparam; | |
| 1775 | |
| 1776 //printf("tempinst->tempdecl = %p\n", tempinst->tempdecl); | |
| 1777 //printf("tp->tempinst->tempdecl = %p\n", tp->tempinst->tempdecl); | |
| 1778 if (!tp->tempinst->tempdecl) | |
| 1779 { //printf("tp->tempinst->name = '%s'\n", tp->tempinst->name->toChars()); | |
| 1780 if (!tp->tempinst->name->equals(tempinst->name)) | |
| 1781 { | |
| 1782 /* Handle case of: | |
| 1783 * template Foo(T : sa!(T), alias sa) | |
| 1784 */ | |
| 1785 int i = templateIdentifierLookup(tp->tempinst->name, parameters); | |
| 1786 if (i == -1) | |
| 1787 { /* Didn't find it as a parameter identifier. Try looking | |
| 1788 * it up and seeing if is an alias. See Bugzilla 1454 | |
| 1789 */ | |
| 1790 Dsymbol *s = tempinst->tempdecl->scope->search(0, tp->tempinst->name, NULL); | |
| 1791 if (s) | |
| 1792 { | |
| 1793 s = s->toAlias(); | |
| 1794 TemplateDeclaration *td = s->isTemplateDeclaration(); | |
| 1795 if (td && td == tempinst->tempdecl) | |
| 1796 goto L2; | |
| 1797 } | |
| 1798 goto Lnomatch; | |
| 1799 } | |
| 1800 TemplateParameter *tpx = (TemplateParameter *)parameters->data[i]; | |
| 1801 // This logic duplicates tpx->matchArg() | |
| 1802 TemplateAliasParameter *ta = tpx->isTemplateAliasParameter(); | |
| 1803 if (!ta) | |
| 1804 goto Lnomatch; | |
| 1805 Dsymbol *sa = tempinst->tempdecl; | |
| 1806 if (!sa) | |
| 1807 goto Lnomatch; | |
| 1808 if (ta->specAlias && sa != ta->specAlias) | |
| 1809 goto Lnomatch; | |
| 1810 if (dedtypes->data[i]) | |
| 1811 { // Must match already deduced symbol | |
| 1812 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 1813 | |
| 1814 if (s != sa) | |
| 1815 goto Lnomatch; | |
| 1816 } | |
| 1817 dedtypes->data[i] = sa; | |
| 1818 } | |
| 1819 } | |
| 1820 else if (tempinst->tempdecl != tp->tempinst->tempdecl) | |
| 1821 goto Lnomatch; | |
| 1822 | |
| 1823 L2: | |
| 1824 if (tempinst->tiargs->dim != tp->tempinst->tiargs->dim) | |
| 1825 goto Lnomatch; | |
| 1826 | |
| 1827 for (int i = 0; i < tempinst->tiargs->dim; i++) | |
| 1828 { | |
| 1829 //printf("\ttest: tempinst->tiargs[%d]\n", i); | |
| 1830 int j; | |
| 1831 Object *o1 = (Object *)tempinst->tiargs->data[i]; | |
| 1832 Object *o2 = (Object *)tp->tempinst->tiargs->data[i]; | |
| 1833 | |
| 1834 Type *t1 = isType(o1); | |
| 1835 Type *t2 = isType(o2); | |
| 1836 | |
| 1837 Expression *e1 = isExpression(o1); | |
| 1838 Expression *e2 = isExpression(o2); | |
| 1839 | |
|
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1840 Dsymbol *s1 = isDsymbol(o1); |
|
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1841 Dsymbol *s2 = isDsymbol(o2); |
|
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1842 |
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1843 Tuple *v1 = isTuple(o1); |
|
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1844 Tuple *v2 = isTuple(o2); |
| 336 | 1845 #if 0 |
| 1846 if (t1) printf("t1 = %s\n", t1->toChars()); | |
| 1847 if (t2) printf("t2 = %s\n", t2->toChars()); | |
| 1848 if (e1) printf("e1 = %s\n", e1->toChars()); | |
| 1849 if (e2) printf("e2 = %s\n", e2->toChars()); | |
|
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1850 if (s1) printf("s1 = %s\n", s1->toChars()); |
|
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1851 if (s2) printf("s2 = %s\n", s2->toChars()); |
|
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1852 if (v1) printf("v1 = %s\n", v1->toChars()); |
|
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1853 if (v2) printf("v2 = %s\n", v2->toChars()); |
| 336 | 1854 #endif |
| 1855 | |
| 1856 if (t1 && t2) | |
| 1857 { | |
| 1858 if (!t1->deduceType(sc, t2, parameters, dedtypes)) | |
| 1859 goto Lnomatch; | |
| 1860 } | |
| 1861 else if (e1 && e2) | |
| 1862 { | |
| 1863 if (!e1->equals(e2)) | |
| 1864 { if (e2->op == TOKvar) | |
| 1865 { | |
| 1866 /* | |
| 1867 * (T:Number!(e2), int e2) | |
| 1868 */ | |
| 1869 j = templateIdentifierLookup(((VarExp *)e2)->var->ident, parameters); | |
| 1870 goto L1; | |
| 1871 } | |
| 1872 goto Lnomatch; | |
| 1873 } | |
| 1874 } | |
| 1875 else if (e1 && t2 && t2->ty == Tident) | |
| 1876 { | |
| 1877 j = templateParameterLookup(t2, parameters); | |
| 1878 L1: | |
| 1879 if (j == -1) | |
| 1880 goto Lnomatch; | |
| 1881 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; | |
| 1882 // BUG: use tp->matchArg() instead of the following | |
| 1883 TemplateValueParameter *tv = tp->isTemplateValueParameter(); | |
| 1884 if (!tv) | |
| 1885 goto Lnomatch; | |
| 1886 Expression *e = (Expression *)dedtypes->data[j]; | |
| 1887 if (e) | |
| 1888 { | |
| 1889 if (!e1->equals(e)) | |
| 1890 goto Lnomatch; | |
| 1891 } | |
| 1892 else | |
| 1893 { Type *vt = tv->valType->semantic(0, sc); | |
| 1894 MATCH m = (MATCH)e1->implicitConvTo(vt); | |
| 1895 if (!m) | |
| 1896 goto Lnomatch; | |
| 1897 dedtypes->data[j] = e1; | |
| 1898 } | |
| 1899 } | |
|
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1900 else if (s1 && t2 && t2->ty == Tident) |
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1901 { |
|
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changeset
|
1902 j = templateParameterLookup(t2, parameters); |
|
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|
1903 if (j == -1) |
|
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|
1904 goto Lnomatch; |
|
b30fe7e1dbb9
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|
1905 TemplateParameter *tp = (TemplateParameter *)parameters->data[j]; |
|
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1906 // BUG: use tp->matchArg() instead of the following |
|
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|
1907 TemplateAliasParameter *ta = tp->isTemplateAliasParameter(); |
|
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|
1908 if (!ta) |
|
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1909 goto Lnomatch; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
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parents:
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|
1910 Dsymbol *s = (Dsymbol *)dedtypes->data[j]; |
|
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|
1911 if (s) |
|
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|
1912 { |
|
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parents:
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1913 if (!s1->equals(s)) |
|
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1914 goto Lnomatch; |
|
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|
1915 } |
|
b30fe7e1dbb9
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|
1916 else |
|
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|
1917 { |
|
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1918 dedtypes->data[j] = s1; |
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1919 } |
|
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1920 } |
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|
1921 else if (s1 && s2) |
|
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|
1922 { |
|
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|
1923 if (!s1->equals(s2)) |
|
b30fe7e1dbb9
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|
1924 goto Lnomatch; |
|
b30fe7e1dbb9
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|
1925 } |
|
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|
1926 // BUG: Need to handle tuple parameters |
| 336 | 1927 else |
| 1928 goto Lnomatch; | |
| 1929 } | |
| 1930 } | |
| 1931 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1932 | |
| 1933 Lnomatch: | |
| 1934 return MATCHnomatch; | |
| 1935 } | |
| 1936 | |
| 1937 MATCH TypeStruct::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1938 { | |
| 1939 //printf("TypeStruct::deduceType()\n"); | |
| 1940 //printf("\tthis->parent = %s, ", sym->parent->toChars()); print(); | |
| 1941 //printf("\ttparam = %d, ", tparam->ty); tparam->print(); | |
| 1942 | |
| 1943 /* If this struct is a template struct, and we're matching | |
| 1944 * it against a template instance, convert the struct type | |
| 1945 * to a template instance, too, and try again. | |
| 1946 */ | |
| 1947 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 1948 | |
| 1949 if (tparam && tparam->ty == Tinstance) | |
| 1950 { | |
| 1951 if (ti && ti->toAlias() == sym) | |
| 1952 { | |
| 1953 TypeInstance *t = new TypeInstance(0, ti); | |
| 1954 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 1955 } | |
| 1956 | |
| 1957 /* Match things like: | |
| 1958 * S!(T).foo | |
| 1959 */ | |
| 1960 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 1961 if (tpi->idents.dim) | |
| 1962 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 1963 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 1964 { | |
| 1965 Type *tparent = sym->parent->getType(); | |
| 1966 if (tparent) | |
| 1967 { | |
| 1968 /* Slice off the .foo in S!(T).foo | |
| 1969 */ | |
| 1970 tpi->idents.dim--; | |
| 1971 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 1972 tpi->idents.dim++; | |
| 1973 return m; | |
| 1974 } | |
| 1975 } | |
| 1976 } | |
| 1977 } | |
| 1978 | |
| 1979 // Extra check | |
| 1980 if (tparam && tparam->ty == Tstruct) | |
| 1981 { | |
| 1982 TypeStruct *tp = (TypeStruct *)tparam; | |
| 1983 | |
| 1984 if (sym != tp->sym) | |
| 1985 return MATCHnomatch; | |
| 1986 } | |
| 1987 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 1988 } | |
| 1989 | |
| 1990 MATCH TypeEnum::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 1991 { | |
| 1992 // Extra check | |
| 1993 if (tparam && tparam->ty == Tenum) | |
| 1994 { | |
| 1995 TypeEnum *tp = (TypeEnum *)tparam; | |
| 1996 | |
| 1997 if (sym != tp->sym) | |
| 1998 return MATCHnomatch; | |
| 1999 } | |
| 2000 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2001 } | |
| 2002 | |
| 2003 MATCH TypeTypedef::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 2004 { | |
| 2005 // Extra check | |
| 2006 if (tparam && tparam->ty == Ttypedef) | |
| 2007 { | |
| 2008 TypeTypedef *tp = (TypeTypedef *)tparam; | |
| 2009 | |
| 2010 if (sym != tp->sym) | |
| 2011 return MATCHnomatch; | |
| 2012 } | |
| 2013 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2014 } | |
| 2015 | |
| 2016 MATCH TypeClass::deduceType(Scope *sc, Type *tparam, TemplateParameters *parameters, Objects *dedtypes) | |
| 2017 { | |
| 2018 //printf("TypeClass::deduceType(this = %s)\n", toChars()); | |
| 2019 | |
| 2020 /* If this class is a template class, and we're matching | |
| 2021 * it against a template instance, convert the class type | |
| 2022 * to a template instance, too, and try again. | |
| 2023 */ | |
| 2024 TemplateInstance *ti = sym->parent->isTemplateInstance(); | |
| 2025 | |
| 2026 if (tparam && tparam->ty == Tinstance) | |
| 2027 { | |
| 2028 if (ti && ti->toAlias() == sym) | |
| 2029 { | |
| 2030 TypeInstance *t = new TypeInstance(0, ti); | |
| 2031 return t->deduceType(sc, tparam, parameters, dedtypes); | |
| 2032 } | |
| 2033 | |
| 2034 /* Match things like: | |
| 2035 * S!(T).foo | |
| 2036 */ | |
| 2037 TypeInstance *tpi = (TypeInstance *)tparam; | |
| 2038 if (tpi->idents.dim) | |
| 2039 { Identifier *id = (Identifier *)tpi->idents.data[tpi->idents.dim - 1]; | |
| 2040 if (id->dyncast() == DYNCAST_IDENTIFIER && sym->ident->equals(id)) | |
| 2041 { | |
| 2042 Type *tparent = sym->parent->getType(); | |
| 2043 if (tparent) | |
| 2044 { | |
| 2045 /* Slice off the .foo in S!(T).foo | |
| 2046 */ | |
| 2047 tpi->idents.dim--; | |
| 2048 MATCH m = tparent->deduceType(sc, tpi, parameters, dedtypes); | |
| 2049 tpi->idents.dim++; | |
| 2050 return m; | |
| 2051 } | |
| 2052 } | |
| 2053 } | |
| 2054 } | |
| 2055 | |
| 2056 // Extra check | |
| 2057 if (tparam && tparam->ty == Tclass) | |
| 2058 { | |
| 2059 TypeClass *tp = (TypeClass *)tparam; | |
| 2060 | |
| 2061 //printf("\t%d\n", (MATCH) implicitConvTo(tp)); | |
| 2062 return (MATCH) implicitConvTo(tp); | |
| 2063 } | |
| 2064 return Type::deduceType(sc, tparam, parameters, dedtypes); | |
| 2065 } | |
| 2066 | |
| 2067 /* ======================== TemplateParameter =============================== */ | |
| 2068 | |
| 2069 TemplateParameter::TemplateParameter(Loc loc, Identifier *ident) | |
| 2070 { | |
| 2071 this->loc = loc; | |
| 2072 this->ident = ident; | |
| 2073 this->sparam = NULL; | |
| 2074 } | |
| 2075 | |
| 2076 TemplateTypeParameter *TemplateParameter::isTemplateTypeParameter() | |
| 2077 { | |
| 2078 return NULL; | |
| 2079 } | |
| 2080 | |
| 2081 TemplateValueParameter *TemplateParameter::isTemplateValueParameter() | |
| 2082 { | |
| 2083 return NULL; | |
| 2084 } | |
| 2085 | |
| 2086 TemplateAliasParameter *TemplateParameter::isTemplateAliasParameter() | |
| 2087 { | |
| 2088 return NULL; | |
| 2089 } | |
| 2090 | |
| 2091 TemplateTupleParameter *TemplateParameter::isTemplateTupleParameter() | |
| 2092 { | |
| 2093 return NULL; | |
| 2094 } | |
| 2095 | |
| 2096 #if DMDV2 | |
| 2097 TemplateThisParameter *TemplateParameter::isTemplateThisParameter() | |
| 2098 { | |
| 2099 return NULL; | |
| 2100 } | |
| 2101 #endif | |
| 2102 | |
| 2103 /* ======================== TemplateTypeParameter =========================== */ | |
| 2104 | |
| 2105 // type-parameter | |
| 2106 | |
| 2107 TemplateTypeParameter::TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, | |
| 2108 Type *defaultType) | |
| 2109 : TemplateParameter(loc, ident) | |
| 2110 { | |
| 2111 this->ident = ident; | |
| 2112 this->specType = specType; | |
| 2113 this->defaultType = defaultType; | |
| 2114 } | |
| 2115 | |
| 2116 TemplateTypeParameter *TemplateTypeParameter::isTemplateTypeParameter() | |
| 2117 { | |
| 2118 return this; | |
| 2119 } | |
| 2120 | |
| 2121 TemplateParameter *TemplateTypeParameter::syntaxCopy() | |
| 2122 { | |
| 2123 TemplateTypeParameter *tp = new TemplateTypeParameter(loc, ident, specType, defaultType); | |
| 2124 if (tp->specType) | |
| 2125 tp->specType = specType->syntaxCopy(); | |
| 2126 if (defaultType) | |
| 2127 tp->defaultType = defaultType->syntaxCopy(); | |
| 2128 return tp; | |
| 2129 } | |
| 2130 | |
| 2131 void TemplateTypeParameter::declareParameter(Scope *sc) | |
| 2132 { | |
| 2133 //printf("TemplateTypeParameter::declareParameter('%s')\n", ident->toChars()); | |
| 2134 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2135 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2136 if (!sc->insert(sparam)) | |
| 2137 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2138 } | |
| 2139 | |
| 2140 void TemplateTypeParameter::semantic(Scope *sc) | |
| 2141 { | |
| 2142 //printf("TemplateTypeParameter::semantic('%s')\n", ident->toChars()); | |
| 2143 if (specType) | |
| 2144 { | |
| 2145 specType = specType->semantic(loc, sc); | |
| 2146 } | |
| 2147 #if 0 // Don't do semantic() until instantiation | |
| 2148 if (defaultType) | |
| 2149 { | |
| 2150 defaultType = defaultType->semantic(loc, sc); | |
| 2151 } | |
| 2152 #endif | |
| 2153 } | |
| 2154 | |
| 2155 /**************************************** | |
| 2156 * Determine if two TemplateParameters are the same | |
| 2157 * as far as TemplateDeclaration overloading goes. | |
| 2158 * Returns: | |
| 2159 * 1 match | |
| 2160 * 0 no match | |
| 2161 */ | |
| 2162 | |
| 2163 int TemplateTypeParameter::overloadMatch(TemplateParameter *tp) | |
| 2164 { | |
| 2165 TemplateTypeParameter *ttp = tp->isTemplateTypeParameter(); | |
| 2166 | |
| 2167 if (ttp) | |
| 2168 { | |
| 2169 if (specType != ttp->specType) | |
| 2170 goto Lnomatch; | |
| 2171 | |
| 2172 if (specType && !specType->equals(ttp->specType)) | |
| 2173 goto Lnomatch; | |
| 2174 | |
| 2175 return 1; // match | |
| 2176 } | |
| 2177 | |
| 2178 Lnomatch: | |
| 2179 return 0; | |
| 2180 } | |
| 2181 | |
| 2182 /******************************************* | |
| 2183 * Match to a particular TemplateParameter. | |
| 2184 * Input: | |
| 2185 * i i'th argument | |
| 2186 * tiargs[] actual arguments to template instance | |
| 2187 * parameters[] template parameters | |
| 2188 * dedtypes[] deduced arguments to template instance | |
| 2189 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 2190 */ | |
| 2191 | |
| 2192 MATCH TemplateTypeParameter::matchArg(Scope *sc, Objects *tiargs, | |
| 2193 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
|
2194 Declaration **psparam, int flags) |
| 336 | 2195 { |
| 2196 //printf("TemplateTypeParameter::matchArg()\n"); | |
| 2197 Type *t; | |
| 2198 Object *oarg; | |
| 2199 MATCH m = MATCHexact; | |
| 2200 Type *ta; | |
| 2201 | |
| 2202 if (i < tiargs->dim) | |
| 2203 oarg = (Object *)tiargs->data[i]; | |
| 2204 else | |
| 2205 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2206 oarg = defaultArg(loc, sc); |
| 336 | 2207 if (!oarg) |
| 2208 { assert(i < dedtypes->dim); | |
| 2209 // It might have already been deduced | |
| 2210 oarg = (Object *)dedtypes->data[i]; | |
| 2211 if (!oarg) | |
| 2212 goto Lnomatch; | |
| 2213 } | |
| 2214 } | |
| 2215 | |
| 2216 ta = isType(oarg); | |
| 2217 if (!ta) | |
| 2218 goto Lnomatch; | |
| 2219 //printf("ta is %s\n", ta->toChars()); | |
| 2220 | |
| 2221 t = (Type *)dedtypes->data[i]; | |
| 2222 | |
| 2223 if (specType) | |
| 2224 { | |
| 2225 //printf("\tcalling deduceType(): ta is %s, specType is %s\n", ta->toChars(), specType->toChars()); | |
| 2226 MATCH m2 = ta->deduceType(sc, specType, parameters, dedtypes); | |
| 2227 if (m2 == MATCHnomatch) | |
| 2228 { //printf("\tfailed deduceType\n"); | |
| 2229 goto Lnomatch; | |
| 2230 } | |
| 2231 | |
| 2232 if (m2 < m) | |
| 2233 m = m2; | |
| 2234 t = (Type *)dedtypes->data[i]; | |
| 2235 } | |
| 2236 else | |
| 2237 { | |
| 2238 // So that matches with specializations are better | |
| 2239 m = MATCHconvert; | |
| 2240 if (t) | |
| 2241 { // Must match already deduced type | |
| 2242 | |
| 2243 m = MATCHexact; | |
| 2244 if (!t->equals(ta)) | |
| 2245 { //printf("t = %s ta = %s\n", t->toChars(), ta->toChars()); | |
| 2246 goto Lnomatch; | |
| 2247 } | |
| 2248 } | |
| 2249 } | |
| 2250 | |
| 2251 if (!t) | |
| 2252 { | |
| 2253 dedtypes->data[i] = ta; | |
| 2254 t = ta; | |
| 2255 } | |
| 2256 *psparam = new AliasDeclaration(loc, ident, t); | |
| 2257 //printf("\tm = %d\n", m); | |
| 2258 return m; | |
| 2259 | |
| 2260 Lnomatch: | |
| 2261 *psparam = NULL; | |
| 2262 //printf("\tm = %d\n", MATCHnomatch); | |
| 2263 return MATCHnomatch; | |
| 2264 } | |
| 2265 | |
| 2266 | |
| 2267 void TemplateTypeParameter::print(Object *oarg, Object *oded) | |
| 2268 { | |
| 2269 printf(" %s\n", ident->toChars()); | |
| 2270 | |
| 2271 Type *t = isType(oarg); | |
| 2272 Type *ta = isType(oded); | |
| 2273 | |
| 2274 assert(ta); | |
| 2275 | |
| 2276 if (specType) | |
| 2277 printf("\tSpecialization: %s\n", specType->toChars()); | |
| 2278 if (defaultType) | |
| 2279 printf("\tDefault: %s\n", defaultType->toChars()); | |
| 2280 printf("\tArgument: %s\n", t ? t->toChars() : "NULL"); | |
| 2281 printf("\tDeduced Type: %s\n", ta->toChars()); | |
| 2282 } | |
| 2283 | |
| 2284 | |
| 2285 void TemplateTypeParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2286 { | |
| 2287 buf->writestring(ident->toChars()); | |
| 2288 if (specType) | |
| 2289 { | |
| 2290 buf->writestring(" : "); | |
| 2291 specType->toCBuffer(buf, NULL, hgs); | |
| 2292 } | |
| 2293 if (defaultType) | |
| 2294 { | |
| 2295 buf->writestring(" = "); | |
| 2296 defaultType->toCBuffer(buf, NULL, hgs); | |
| 2297 } | |
| 2298 } | |
| 2299 | |
| 2300 | |
| 2301 void *TemplateTypeParameter::dummyArg() | |
| 2302 { Type *t; | |
| 2303 | |
| 2304 if (specType) | |
| 2305 t = specType; | |
| 2306 else | |
| 2307 { // Use this for alias-parameter's too (?) | |
| 2308 t = new TypeIdentifier(loc, ident); | |
| 2309 } | |
| 2310 return (void *)t; | |
| 2311 } | |
| 2312 | |
| 2313 | |
| 2314 Object *TemplateTypeParameter::specialization() | |
| 2315 { | |
| 2316 return specType; | |
| 2317 } | |
| 2318 | |
| 2319 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2320 Object *TemplateTypeParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2321 { |
| 2322 Type *t; | |
| 2323 | |
| 2324 t = defaultType; | |
| 2325 if (t) | |
| 2326 { | |
| 2327 t = t->syntaxCopy(); | |
| 2328 t = t->semantic(loc, sc); | |
| 2329 } | |
| 2330 return t; | |
| 2331 } | |
| 2332 | |
| 2333 /* ======================== TemplateThisParameter =========================== */ | |
| 2334 | |
| 2335 #if DMDV2 | |
| 2336 // this-parameter | |
| 2337 | |
| 2338 TemplateThisParameter::TemplateThisParameter(Loc loc, Identifier *ident, | |
| 2339 Type *specType, | |
| 2340 Type *defaultType) | |
| 2341 : TemplateTypeParameter(loc, ident, specType, defaultType) | |
| 2342 { | |
| 2343 } | |
| 2344 | |
| 2345 TemplateThisParameter *TemplateThisParameter::isTemplateThisParameter() | |
| 2346 { | |
| 2347 return this; | |
| 2348 } | |
| 2349 | |
| 2350 TemplateParameter *TemplateThisParameter::syntaxCopy() | |
| 2351 { | |
| 2352 TemplateThisParameter *tp = new TemplateThisParameter(loc, ident, specType, defaultType); | |
| 2353 if (tp->specType) | |
| 2354 tp->specType = specType->syntaxCopy(); | |
| 2355 if (defaultType) | |
| 2356 tp->defaultType = defaultType->syntaxCopy(); | |
| 2357 return tp; | |
| 2358 } | |
| 2359 | |
| 2360 void TemplateThisParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2361 { | |
| 2362 buf->writestring("this "); | |
| 2363 TemplateTypeParameter::toCBuffer(buf, hgs); | |
| 2364 } | |
| 2365 #endif | |
| 2366 | |
| 2367 /* ======================== TemplateAliasParameter ========================== */ | |
| 2368 | |
| 2369 // alias-parameter | |
| 2370 | |
| 2371 Dsymbol *TemplateAliasParameter::sdummy = NULL; | |
| 2372 | |
| 2373 TemplateAliasParameter::TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias) | |
| 2374 : TemplateParameter(loc, ident) | |
| 2375 { | |
| 2376 this->ident = ident; | |
| 2377 this->specAliasT = specAliasT; | |
| 2378 this->defaultAlias = defaultAlias; | |
| 2379 | |
| 2380 this->specAlias = NULL; | |
| 2381 } | |
| 2382 | |
| 2383 TemplateAliasParameter *TemplateAliasParameter::isTemplateAliasParameter() | |
| 2384 { | |
| 2385 return this; | |
| 2386 } | |
| 2387 | |
| 2388 TemplateParameter *TemplateAliasParameter::syntaxCopy() | |
| 2389 { | |
| 2390 TemplateAliasParameter *tp = new TemplateAliasParameter(loc, ident, specAliasT, defaultAlias); | |
| 2391 if (tp->specAliasT) | |
| 2392 tp->specAliasT = specAliasT->syntaxCopy(); | |
| 2393 if (defaultAlias) | |
| 2394 tp->defaultAlias = defaultAlias->syntaxCopy(); | |
| 2395 return tp; | |
| 2396 } | |
| 2397 | |
| 2398 void TemplateAliasParameter::declareParameter(Scope *sc) | |
| 2399 { | |
| 2400 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2401 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2402 if (!sc->insert(sparam)) | |
| 2403 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2404 } | |
| 2405 | |
| 2406 void TemplateAliasParameter::semantic(Scope *sc) | |
| 2407 { | |
| 2408 if (specAliasT) | |
| 2409 { | |
| 2410 specAlias = specAliasT->toDsymbol(sc); | |
| 2411 if (!specAlias) | |
| 2412 error(loc, "%s is not a symbol", specAliasT->toChars()); | |
| 2413 } | |
| 2414 #if 0 // Don't do semantic() until instantiation | |
| 2415 if (defaultAlias) | |
| 2416 defaultAlias = defaultAlias->semantic(loc, sc); | |
| 2417 #endif | |
| 2418 } | |
| 2419 | |
| 2420 int TemplateAliasParameter::overloadMatch(TemplateParameter *tp) | |
| 2421 { | |
| 2422 TemplateAliasParameter *tap = tp->isTemplateAliasParameter(); | |
| 2423 | |
| 2424 if (tap) | |
| 2425 { | |
| 2426 if (specAlias != tap->specAlias) | |
| 2427 goto Lnomatch; | |
| 2428 | |
| 2429 return 1; // match | |
| 2430 } | |
| 2431 | |
| 2432 Lnomatch: | |
| 2433 return 0; | |
| 2434 } | |
| 2435 | |
| 2436 MATCH TemplateAliasParameter::matchArg(Scope *sc, | |
| 2437 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
|
2438 Declaration **psparam, int flags) |
| 336 | 2439 { |
| 2440 Dsymbol *sa; | |
| 2441 Object *oarg; | |
| 2442 Expression *ea; | |
| 2443 | |
| 2444 //printf("TemplateAliasParameter::matchArg()\n"); | |
| 2445 | |
| 2446 if (i < tiargs->dim) | |
| 2447 oarg = (Object *)tiargs->data[i]; | |
| 2448 else | |
| 2449 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2450 oarg = defaultArg(loc, sc); |
| 336 | 2451 if (!oarg) |
| 2452 { assert(i < dedtypes->dim); | |
| 2453 // It might have already been deduced | |
| 2454 oarg = (Object *)dedtypes->data[i]; | |
| 2455 if (!oarg) | |
| 2456 goto Lnomatch; | |
| 2457 } | |
| 2458 } | |
| 2459 | |
| 2460 sa = getDsymbol(oarg); | |
| 2461 if (!sa) | |
| 2462 goto Lnomatch; | |
| 2463 | |
| 2464 if (specAlias) | |
| 2465 { | |
| 2466 if (!sa || sa == sdummy) | |
| 2467 goto Lnomatch; | |
| 2468 if (sa != specAlias) | |
| 2469 goto Lnomatch; | |
| 2470 } | |
| 2471 else if (dedtypes->data[i]) | |
| 2472 { // Must match already deduced symbol | |
| 2473 Dsymbol *s = (Dsymbol *)dedtypes->data[i]; | |
| 2474 | |
| 2475 if (!sa || s != sa) | |
| 2476 goto Lnomatch; | |
| 2477 } | |
| 2478 dedtypes->data[i] = sa; | |
| 2479 | |
| 2480 *psparam = new AliasDeclaration(loc, ident, sa); | |
| 2481 return MATCHexact; | |
| 2482 | |
| 2483 Lnomatch: | |
| 2484 *psparam = NULL; | |
| 2485 return MATCHnomatch; | |
| 2486 } | |
| 2487 | |
| 2488 | |
| 2489 void TemplateAliasParameter::print(Object *oarg, Object *oded) | |
| 2490 { | |
| 2491 printf(" %s\n", ident->toChars()); | |
| 2492 | |
| 2493 Dsymbol *sa = isDsymbol(oded); | |
| 2494 assert(sa); | |
| 2495 | |
| 2496 printf("\tArgument alias: %s\n", sa->toChars()); | |
| 2497 } | |
| 2498 | |
| 2499 void TemplateAliasParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2500 { | |
| 2501 buf->writestring("alias "); | |
| 2502 buf->writestring(ident->toChars()); | |
| 2503 if (specAliasT) | |
| 2504 { | |
| 2505 buf->writestring(" : "); | |
| 2506 specAliasT->toCBuffer(buf, NULL, hgs); | |
| 2507 } | |
| 2508 if (defaultAlias) | |
| 2509 { | |
| 2510 buf->writestring(" = "); | |
| 2511 defaultAlias->toCBuffer(buf, NULL, hgs); | |
| 2512 } | |
| 2513 } | |
| 2514 | |
| 2515 | |
| 2516 void *TemplateAliasParameter::dummyArg() | |
| 2517 { Dsymbol *s; | |
| 2518 | |
| 2519 s = specAlias; | |
| 2520 if (!s) | |
| 2521 { | |
| 2522 if (!sdummy) | |
| 2523 sdummy = new Dsymbol(); | |
| 2524 s = sdummy; | |
| 2525 } | |
| 2526 return (void*)s; | |
| 2527 } | |
| 2528 | |
| 2529 | |
| 2530 Object *TemplateAliasParameter::specialization() | |
| 2531 { | |
| 2532 return specAliasT; | |
| 2533 } | |
| 2534 | |
| 2535 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2536 Object *TemplateAliasParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2537 { |
| 2538 Dsymbol *s = NULL; | |
| 2539 | |
| 2540 if (defaultAlias) | |
| 2541 { | |
| 2542 s = defaultAlias->toDsymbol(sc); | |
| 2543 if (!s) | |
| 2544 error("%s is not a symbol", defaultAlias->toChars()); | |
| 2545 } | |
| 2546 return s; | |
| 2547 } | |
| 2548 | |
| 2549 /* ======================== TemplateValueParameter ========================== */ | |
| 2550 | |
| 2551 // value-parameter | |
| 2552 | |
| 2553 Expression *TemplateValueParameter::edummy = NULL; | |
| 2554 | |
| 2555 TemplateValueParameter::TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, | |
| 2556 Expression *specValue, Expression *defaultValue) | |
| 2557 : TemplateParameter(loc, ident) | |
| 2558 { | |
| 2559 this->ident = ident; | |
| 2560 this->valType = valType; | |
| 2561 this->specValue = specValue; | |
| 2562 this->defaultValue = defaultValue; | |
| 2563 } | |
| 2564 | |
| 2565 TemplateValueParameter *TemplateValueParameter::isTemplateValueParameter() | |
| 2566 { | |
| 2567 return this; | |
| 2568 } | |
| 2569 | |
| 2570 TemplateParameter *TemplateValueParameter::syntaxCopy() | |
| 2571 { | |
| 2572 TemplateValueParameter *tp = | |
| 2573 new TemplateValueParameter(loc, ident, valType, specValue, defaultValue); | |
| 2574 tp->valType = valType->syntaxCopy(); | |
| 2575 if (specValue) | |
| 2576 tp->specValue = specValue->syntaxCopy(); | |
| 2577 if (defaultValue) | |
| 2578 tp->defaultValue = defaultValue->syntaxCopy(); | |
| 2579 return tp; | |
| 2580 } | |
| 2581 | |
| 2582 void TemplateValueParameter::declareParameter(Scope *sc) | |
| 2583 { | |
| 2584 VarDeclaration *v = new VarDeclaration(loc, valType, ident, NULL); | |
| 2585 v->storage_class = STCtemplateparameter; | |
| 2586 if (!sc->insert(v)) | |
| 2587 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2588 sparam = v; | |
| 2589 } | |
| 2590 | |
| 2591 void TemplateValueParameter::semantic(Scope *sc) | |
| 2592 { | |
| 2593 sparam->semantic(sc); | |
| 2594 valType = valType->semantic(loc, sc); | |
| 2595 if (!(valType->isintegral() || valType->isfloating() || valType->isString()) && | |
| 2596 valType->ty != Tident) | |
| 2597 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType->toChars()); | |
| 2598 | |
| 2599 if (specValue) | |
| 2600 { Expression *e = specValue; | |
| 2601 | |
| 2602 e = e->semantic(sc); | |
| 2603 e = e->implicitCastTo(sc, valType); | |
| 2604 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2605 if (e->op == TOKint64 || e->op == TOKfloat64 || | |
| 2606 e->op == TOKcomplex80 || e->op == TOKnull || e->op == TOKstring) | |
| 2607 specValue = e; | |
| 2608 //e->toInteger(); | |
| 2609 } | |
| 2610 | |
| 2611 #if 0 // defer semantic analysis to arg match | |
| 2612 if (defaultValue) | |
| 2613 { Expression *e = defaultValue; | |
| 2614 | |
| 2615 e = e->semantic(sc); | |
| 2616 e = e->implicitCastTo(sc, valType); | |
| 2617 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2618 if (e->op == TOKint64) | |
| 2619 defaultValue = e; | |
| 2620 //e->toInteger(); | |
| 2621 } | |
| 2622 #endif | |
| 2623 } | |
| 2624 | |
| 2625 int TemplateValueParameter::overloadMatch(TemplateParameter *tp) | |
| 2626 { | |
| 2627 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 2628 | |
| 2629 if (tvp) | |
| 2630 { | |
| 2631 if (valType != tvp->valType) | |
| 2632 goto Lnomatch; | |
| 2633 | |
| 2634 if (valType && !valType->equals(tvp->valType)) | |
| 2635 goto Lnomatch; | |
| 2636 | |
| 2637 if (specValue != tvp->specValue) | |
| 2638 goto Lnomatch; | |
| 2639 | |
| 2640 return 1; // match | |
| 2641 } | |
| 2642 | |
| 2643 Lnomatch: | |
| 2644 return 0; | |
| 2645 } | |
| 2646 | |
| 2647 | |
| 2648 MATCH TemplateValueParameter::matchArg(Scope *sc, | |
| 2649 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
|
2650 Declaration **psparam, int flags) |
| 336 | 2651 { |
| 2652 //printf("TemplateValueParameter::matchArg()\n"); | |
| 2653 | |
| 2654 Initializer *init; | |
| 2655 Declaration *sparam; | |
| 2656 MATCH m = MATCHexact; | |
| 2657 Expression *ei; | |
| 2658 Object *oarg; | |
| 2659 | |
| 2660 if (i < tiargs->dim) | |
| 2661 oarg = (Object *)tiargs->data[i]; | |
| 2662 else | |
| 2663 { // Get default argument instead | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2664 oarg = defaultArg(loc, sc); |
| 336 | 2665 if (!oarg) |
| 2666 { assert(i < dedtypes->dim); | |
| 2667 // It might have already been deduced | |
| 2668 oarg = (Object *)dedtypes->data[i]; | |
| 2669 if (!oarg) | |
| 2670 goto Lnomatch; | |
| 2671 } | |
| 2672 } | |
| 2673 | |
| 2674 ei = isExpression(oarg); | |
| 2675 Type *vt; | |
| 2676 | |
| 2677 if (!ei && oarg) | |
| 2678 goto Lnomatch; | |
| 2679 | |
| 2680 if (specValue) | |
| 2681 { | |
| 2682 if (!ei || ei == edummy) | |
| 2683 goto Lnomatch; | |
| 2684 | |
| 2685 Expression *e = specValue; | |
| 2686 | |
| 2687 e = e->semantic(sc); | |
| 2688 e = e->implicitCastTo(sc, valType); | |
| 2689 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2690 | |
| 2691 ei = ei->syntaxCopy(); | |
| 2692 ei = ei->semantic(sc); | |
| 2693 ei = ei->optimize(WANTvalue | WANTinterpret); | |
| 2694 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2695 //printf("e : %s, %s\n", e->toChars(), e->type->toChars()); | |
| 2696 if (!ei->equals(e)) | |
| 2697 goto Lnomatch; | |
| 2698 } | |
| 2699 else if (dedtypes->data[i]) | |
| 2700 { // Must match already deduced value | |
| 2701 Expression *e = (Expression *)dedtypes->data[i]; | |
| 2702 | |
| 2703 if (!ei || !ei->equals(e)) | |
| 2704 goto Lnomatch; | |
| 2705 } | |
| 2706 Lmatch: | |
| 2707 //printf("valType: %s, ty = %d\n", valType->toChars(), valType->ty); | |
| 2708 vt = valType->semantic(0, sc); | |
| 2709 //printf("ei: %s, %s\n", ei->toChars(), ei->type->toChars()); | |
| 2710 if (ei->type) | |
| 2711 { | |
| 2712 m = (MATCH)ei->implicitConvTo(vt); | |
| 2713 //printf("m: %d\n", m); | |
| 2714 if (!m) | |
| 2715 goto Lnomatch; | |
| 2716 } | |
| 2717 dedtypes->data[i] = ei; | |
| 2718 | |
| 2719 init = new ExpInitializer(loc, ei); | |
| 2720 sparam = new VarDeclaration(loc, vt, ident, init); | |
| 2721 sparam->storage_class = STCconst; | |
| 2722 *psparam = sparam; | |
| 2723 return m; | |
| 2724 | |
| 2725 Lnomatch: | |
| 2726 //printf("\tno match\n"); | |
| 2727 *psparam = NULL; | |
| 2728 return MATCHnomatch; | |
| 2729 } | |
| 2730 | |
| 2731 | |
| 2732 void TemplateValueParameter::print(Object *oarg, Object *oded) | |
| 2733 { | |
| 2734 printf(" %s\n", ident->toChars()); | |
| 2735 | |
| 2736 Expression *ea = isExpression(oded); | |
| 2737 | |
| 2738 if (specValue) | |
| 2739 printf("\tSpecialization: %s\n", specValue->toChars()); | |
| 2740 printf("\tArgument Value: %s\n", ea ? ea->toChars() : "NULL"); | |
| 2741 } | |
| 2742 | |
| 2743 | |
| 2744 void TemplateValueParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2745 { | |
| 2746 valType->toCBuffer(buf, ident, hgs); | |
| 2747 if (specValue) | |
| 2748 { | |
| 2749 buf->writestring(" : "); | |
| 2750 specValue->toCBuffer(buf, hgs); | |
| 2751 } | |
| 2752 if (defaultValue) | |
| 2753 { | |
| 2754 buf->writestring(" = "); | |
| 2755 defaultValue->toCBuffer(buf, hgs); | |
| 2756 } | |
| 2757 } | |
| 2758 | |
| 2759 | |
| 2760 void *TemplateValueParameter::dummyArg() | |
| 2761 { Expression *e; | |
| 2762 | |
| 2763 e = specValue; | |
| 2764 if (!e) | |
| 2765 { | |
| 2766 // Create a dummy value | |
| 2767 if (!edummy) | |
| 2768 edummy = valType->defaultInit(); | |
| 2769 e = edummy; | |
| 2770 } | |
| 2771 return (void *)e; | |
| 2772 } | |
| 2773 | |
| 2774 | |
| 2775 Object *TemplateValueParameter::specialization() | |
| 2776 { | |
| 2777 return specValue; | |
| 2778 } | |
| 2779 | |
| 2780 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2781 Object *TemplateValueParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2782 { |
| 2783 Expression *e = defaultValue; | |
| 2784 if (e) | |
| 2785 { | |
| 2786 e = e->syntaxCopy(); | |
| 2787 e = e->semantic(sc); | |
| 2788 #if DMDV2 | |
| 2789 if (e->op == TOKdefault) | |
| 2790 { DefaultInitExp *de = (DefaultInitExp *)e; | |
| 2791 e = de->resolve(loc, sc); | |
| 2792 } | |
| 2793 #endif | |
| 2794 } | |
| 2795 return e; | |
| 2796 } | |
| 2797 | |
| 2798 /* ======================== TemplateTupleParameter ========================== */ | |
| 2799 | |
| 2800 // variadic-parameter | |
| 2801 | |
| 2802 TemplateTupleParameter::TemplateTupleParameter(Loc loc, Identifier *ident) | |
| 2803 : TemplateParameter(loc, ident) | |
| 2804 { | |
| 2805 this->ident = ident; | |
| 2806 } | |
| 2807 | |
| 2808 TemplateTupleParameter *TemplateTupleParameter::isTemplateTupleParameter() | |
| 2809 { | |
| 2810 return this; | |
| 2811 } | |
| 2812 | |
| 2813 TemplateParameter *TemplateTupleParameter::syntaxCopy() | |
| 2814 { | |
| 2815 TemplateTupleParameter *tp = new TemplateTupleParameter(loc, ident); | |
| 2816 return tp; | |
| 2817 } | |
| 2818 | |
| 2819 void TemplateTupleParameter::declareParameter(Scope *sc) | |
| 2820 { | |
| 2821 TypeIdentifier *ti = new TypeIdentifier(loc, ident); | |
| 2822 sparam = new AliasDeclaration(loc, ident, ti); | |
| 2823 if (!sc->insert(sparam)) | |
| 2824 error(loc, "parameter '%s' multiply defined", ident->toChars()); | |
| 2825 } | |
| 2826 | |
| 2827 void TemplateTupleParameter::semantic(Scope *sc) | |
| 2828 { | |
| 2829 } | |
| 2830 | |
| 2831 int TemplateTupleParameter::overloadMatch(TemplateParameter *tp) | |
| 2832 { | |
| 2833 TemplateTupleParameter *tvp = tp->isTemplateTupleParameter(); | |
| 2834 | |
| 2835 if (tvp) | |
| 2836 { | |
| 2837 return 1; // match | |
| 2838 } | |
| 2839 | |
| 2840 Lnomatch: | |
| 2841 return 0; | |
| 2842 } | |
| 2843 | |
| 2844 MATCH TemplateTupleParameter::matchArg(Scope *sc, | |
| 2845 Objects *tiargs, int i, TemplateParameters *parameters, | |
| 2846 Objects *dedtypes, | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
2847 Declaration **psparam, int flags) |
| 336 | 2848 { |
| 2849 //printf("TemplateTupleParameter::matchArg()\n"); | |
| 2850 | |
| 2851 /* The rest of the actual arguments (tiargs[]) form the match | |
| 2852 * for the variadic parameter. | |
| 2853 */ | |
| 2854 assert(i + 1 == dedtypes->dim); // must be the last one | |
| 2855 Tuple *ovar; | |
| 2856 if (i + 1 == tiargs->dim && isTuple((Object *)tiargs->data[i])) | |
| 2857 ovar = isTuple((Object *)tiargs->data[i]); | |
| 2858 else | |
| 2859 { | |
| 2860 ovar = new Tuple(); | |
| 2861 //printf("ovar = %p\n", ovar); | |
| 2862 if (i < tiargs->dim) | |
| 2863 { | |
| 2864 //printf("i = %d, tiargs->dim = %d\n", i, tiargs->dim); | |
| 2865 ovar->objects.setDim(tiargs->dim - i); | |
| 2866 for (size_t j = 0; j < ovar->objects.dim; j++) | |
| 2867 ovar->objects.data[j] = tiargs->data[i + j]; | |
| 2868 } | |
| 2869 } | |
| 2870 *psparam = new TupleDeclaration(loc, ident, &ovar->objects); | |
| 2871 dedtypes->data[i] = (void *)ovar; | |
| 2872 return MATCHexact; | |
| 2873 } | |
| 2874 | |
| 2875 | |
| 2876 void TemplateTupleParameter::print(Object *oarg, Object *oded) | |
| 2877 { | |
| 2878 printf(" %s... [", ident->toChars()); | |
| 2879 Tuple *v = isTuple(oded); | |
| 2880 assert(v); | |
| 2881 | |
| 2882 //printf("|%d| ", v->objects.dim); | |
| 2883 for (int i = 0; i < v->objects.dim; i++) | |
| 2884 { | |
| 2885 if (i) | |
| 2886 printf(", "); | |
| 2887 | |
| 2888 Object *o = (Object *)v->objects.data[i]; | |
| 2889 | |
| 2890 Dsymbol *sa = isDsymbol(o); | |
| 2891 if (sa) | |
| 2892 printf("alias: %s", sa->toChars()); | |
| 2893 | |
| 2894 Type *ta = isType(o); | |
| 2895 if (ta) | |
| 2896 printf("type: %s", ta->toChars()); | |
| 2897 | |
| 2898 Expression *ea = isExpression(o); | |
| 2899 if (ea) | |
| 2900 printf("exp: %s", ea->toChars()); | |
| 2901 | |
| 2902 assert(!isTuple(o)); // no nested Tuple arguments | |
| 2903 } | |
| 2904 | |
| 2905 printf("]\n"); | |
| 2906 } | |
| 2907 | |
| 2908 void TemplateTupleParameter::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2909 { | |
| 2910 buf->writestring(ident->toChars()); | |
| 2911 buf->writestring("..."); | |
| 2912 } | |
| 2913 | |
| 2914 | |
| 2915 void *TemplateTupleParameter::dummyArg() | |
| 2916 { | |
| 2917 return NULL; | |
| 2918 } | |
| 2919 | |
| 2920 | |
| 2921 Object *TemplateTupleParameter::specialization() | |
| 2922 { | |
| 2923 return NULL; | |
| 2924 } | |
| 2925 | |
| 2926 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2927 Object *TemplateTupleParameter::defaultArg(Loc loc, Scope *sc) |
| 336 | 2928 { |
| 2929 return NULL; | |
| 2930 } | |
| 2931 | |
| 2932 /* ======================== TemplateInstance ================================ */ | |
| 2933 | |
| 2934 TemplateInstance::TemplateInstance(Loc loc, Identifier *ident) | |
| 2935 : ScopeDsymbol(NULL) | |
| 2936 { | |
| 2937 #if LOG | |
| 2938 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident->toChars() : "null"); | |
| 2939 #endif | |
| 2940 this->loc = loc; | |
| 2941 this->name = ident; | |
| 2942 this->tiargs = NULL; | |
| 2943 this->tempdecl = NULL; | |
| 2944 this->inst = NULL; | |
| 2945 this->argsym = NULL; | |
| 2946 this->aliasdecl = NULL; | |
| 2947 this->semanticdone = 0; | |
| 2948 this->semantictiargsdone = 0; | |
| 2949 this->withsym = NULL; | |
| 2950 this->nest = 0; | |
| 2951 this->havetempdecl = 0; | |
| 2952 this->isnested = NULL; | |
| 2953 this->errors = 0; | |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2954 |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
2955 #if IN_LLVM |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2956 // LDC |
|
1067
7ce8355fbcc6
Improved template emission control for singleobj building.
Christian Kamm <kamm incasoftware de>
parents:
948
diff
changeset
|
2957 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
|
2958 this->tinst = NULL; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
2959 this->tmodule = NULL; |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
2960 #endif |
| 336 | 2961 } |
| 2962 | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2963 /***************** |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2964 * 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
|
2965 * template to instantiate. |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
2966 */ |
| 336 | 2967 |
| 2968 TemplateInstance::TemplateInstance(Loc loc, TemplateDeclaration *td, Objects *tiargs) | |
| 2969 : ScopeDsymbol(NULL) | |
| 2970 { | |
| 2971 #if LOG | |
| 2972 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td->toChars()); | |
| 2973 #endif | |
| 2974 this->loc = loc; | |
| 2975 this->name = td->ident; | |
| 2976 this->tiargs = tiargs; | |
| 2977 this->tempdecl = td; | |
| 2978 this->inst = NULL; | |
| 2979 this->argsym = NULL; | |
| 2980 this->aliasdecl = NULL; | |
| 2981 this->semanticdone = 0; | |
| 2982 this->semantictiargsdone = 1; | |
| 2983 this->withsym = NULL; | |
| 2984 this->nest = 0; | |
| 2985 this->havetempdecl = 1; | |
| 2986 this->isnested = NULL; | |
| 2987 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
|
2988 |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
2989 #if IN_LLVM |
|
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
|
2990 // LDC |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
2991 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
|
2992 this->tmodule = NULL; |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
2993 #endif |
| 336 | 2994 |
| 2995 assert((size_t)tempdecl->scope > 0x10000); | |
| 2996 } | |
| 2997 | |
| 2998 | |
| 2999 Objects *TemplateInstance::arraySyntaxCopy(Objects *objs) | |
| 3000 { | |
| 3001 Objects *a = NULL; | |
| 3002 if (objs) | |
| 3003 { a = new Objects(); | |
| 3004 a->setDim(objs->dim); | |
| 3005 for (size_t i = 0; i < objs->dim; i++) | |
| 3006 { | |
| 3007 Type *ta = isType((Object *)objs->data[i]); | |
| 3008 if (ta) | |
| 3009 a->data[i] = ta->syntaxCopy(); | |
| 3010 else | |
| 3011 { | |
| 3012 Expression *ea = isExpression((Object *)objs->data[i]); | |
| 3013 assert(ea); | |
| 3014 a->data[i] = ea->syntaxCopy(); | |
| 3015 } | |
| 3016 } | |
| 3017 } | |
| 3018 return a; | |
| 3019 } | |
| 3020 | |
| 3021 Dsymbol *TemplateInstance::syntaxCopy(Dsymbol *s) | |
| 3022 { | |
| 3023 TemplateInstance *ti; | |
| 3024 | |
| 3025 if (s) | |
| 3026 ti = (TemplateInstance *)s; | |
| 3027 else | |
| 3028 ti = new TemplateInstance(loc, name); | |
| 3029 | |
| 3030 ti->tiargs = arraySyntaxCopy(tiargs); | |
| 3031 | |
| 3032 ScopeDsymbol::syntaxCopy(ti); | |
| 3033 return ti; | |
| 3034 } | |
| 3035 | |
| 3036 | |
| 3037 void TemplateInstance::semantic(Scope *sc) | |
| 3038 { | |
| 3039 if (global.errors) | |
| 3040 { | |
| 3041 if (!global.gag) | |
| 3042 { | |
| 3043 /* Trying to soldier on rarely generates useful messages | |
| 3044 * at this point. | |
| 3045 */ | |
| 3046 fatal(); | |
| 3047 } | |
| 3048 return; | |
| 3049 } | |
| 3050 #if LOG | |
| 3051 printf("\n+TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3052 #endif | |
| 3053 if (inst) // if semantic() was already run | |
| 3054 { | |
| 3055 #if LOG | |
| 3056 printf("-TemplateInstance::semantic('%s', this=%p) already run\n", inst->toChars(), inst); | |
| 3057 #endif | |
| 3058 return; | |
| 3059 } | |
| 3060 | |
| 3061 if (semanticdone != 0) | |
| 3062 { | |
| 3063 error(loc, "recursive template expansion"); | |
| 3064 // inst = this; | |
| 3065 return; | |
| 3066 } | |
| 3067 semanticdone = 1; | |
| 3068 | |
|
561
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3069 // 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
|
3070 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
|
3071 |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3072 // 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
|
3073 if (tinst) |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3074 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
|
3075 else |
|
1714836f2c0b
Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
Christian Kamm <kamm incasoftware de>
parents:
940
diff
changeset
|
3076 tmodule = sc->module; |
|
948
780530d1cad3
Revert templates to old behavior.
Christian Kamm <kamm incasoftware de>
parents:
946
diff
changeset
|
3077 //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
|
3078 |
| 336 | 3079 #if LOG |
| 3080 printf("\tdo semantic\n"); | |
| 3081 #endif | |
| 3082 if (havetempdecl) | |
| 3083 { | |
| 3084 assert((size_t)tempdecl->scope > 0x10000); | |
| 3085 // Deduce tdtypes | |
| 3086 tdtypes.setDim(tempdecl->parameters->dim); | |
| 3087 if (!tempdecl->matchWithInstance(this, &tdtypes, 0)) | |
| 3088 { | |
| 3089 error("incompatible arguments for template instantiation"); | |
| 3090 inst = this; | |
| 3091 return; | |
| 3092 } | |
| 3093 } | |
| 3094 else | |
| 3095 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3096 /* 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
|
3097 * (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
|
3098 */ |
| 336 | 3099 semanticTiargs(sc); |
| 3100 | |
| 3101 tempdecl = findTemplateDeclaration(sc); | |
| 3102 if (tempdecl) | |
| 3103 tempdecl = findBestMatch(sc); | |
| 3104 if (!tempdecl || global.errors) | |
| 3105 { inst = this; | |
| 3106 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 3107 return; // error recovery | |
| 3108 } | |
| 3109 } | |
| 3110 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3111 hasNestedArgs(tiargs); |
| 336 | 3112 |
| 3113 /* See if there is an existing TemplateInstantiation that already | |
| 3114 * implements the typeargs. If so, just refer to that one instead. | |
| 3115 */ | |
| 3116 | |
| 3117 for (size_t i = 0; i < tempdecl->instances.dim; i++) | |
| 3118 { | |
| 3119 TemplateInstance *ti = (TemplateInstance *)tempdecl->instances.data[i]; | |
| 3120 #if LOG | |
| 3121 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti->toChars()); | |
| 3122 #endif | |
| 3123 assert(tdtypes.dim == ti->tdtypes.dim); | |
| 3124 | |
| 3125 // Nesting must match | |
| 3126 if (isnested != ti->isnested) | |
| 3127 continue; | |
| 3128 #if 0 | |
| 3129 if (isnested && sc->parent != ti->parent) | |
| 3130 continue; | |
| 3131 #endif | |
| 3132 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 3133 { Object *o1 = (Object *)tdtypes.data[j]; | |
| 3134 Object *o2 = (Object *)ti->tdtypes.data[j]; | |
| 3135 if (!match(o1, o2, tempdecl, sc)) | |
| 3136 goto L1; | |
| 3137 } | |
| 3138 | |
| 3139 // It's a match | |
| 3140 inst = ti; | |
| 3141 parent = ti->parent; | |
| 3142 #if LOG | |
| 3143 printf("\tit's a match with instance %p\n", inst); | |
| 3144 #endif | |
| 3145 return; | |
| 3146 | |
| 3147 L1: | |
| 3148 ; | |
| 3149 } | |
| 3150 | |
| 3151 /* So, we need to implement 'this' instance. | |
| 3152 */ | |
| 3153 #if LOG | |
| 3154 printf("\timplement template instance '%s'\n", toChars()); | |
| 3155 #endif | |
| 3156 unsigned errorsave = global.errors; | |
| 3157 inst = this; | |
| 3158 int tempdecl_instance_idx = tempdecl->instances.dim; | |
| 3159 tempdecl->instances.push(this); | |
| 3160 parent = tempdecl->parent; | |
| 3161 //printf("parent = '%s'\n", parent->kind()); | |
| 3162 | |
| 3163 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 3164 | |
| 3165 #if 1 | |
| 3166 if (isnested) | |
| 3167 parent = isnested; | |
| 3168 #endif | |
| 3169 //printf("parent = '%s'\n", parent->kind()); | |
| 3170 | |
| 3171 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 3172 // will get called on the instance members | |
| 3173 #if 1 | |
| 3174 int dosemantic3 = 0; | |
| 3175 { Array *a; | |
|
875
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Merged DMD 1.038
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diff
changeset
|
3176 |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
3177 Scope *scx = sc; |
|
330f999ade44
Merged DMD 1.038
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|
3178 #if 0 |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
3179 for (scx = sc; scx; scx = scx->enclosing) |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
3180 if (scx->scopesym) |
|
330f999ade44
Merged DMD 1.038
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diff
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|
3181 break; |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
3182 #endif |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3183 |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
3184 //if (scx && scx->scopesym) printf("3: scx is %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
Merged DMD 1.038
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parents:
664
diff
changeset
|
3185 if (scx && scx->scopesym && |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3186 scx->scopesym->members && !scx->scopesym->isTemplateMixin() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3187 #if 1 // removed because it bloated compile times |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3188 /* 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
|
3189 * 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
|
3190 * or the compilation of B do the actual instantiation? |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3191 * |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3192 * see bugzilla 2500. |
|
875
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Merged DMD 1.038
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parents:
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diff
changeset
|
3193 */ |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3194 && !scx->module->selfImports() |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3195 #endif |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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664
diff
changeset
|
3196 ) |
| 336 | 3197 { |
|
875
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Merged DMD 1.038
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diff
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|
3198 //printf("\t1: adding to %s %s\n", scx->scopesym->kind(), scx->scopesym->toChars()); |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
3199 a = scx->scopesym->members; |
| 336 | 3200 } |
| 3201 else | |
| 3202 { Module *m = sc->module->importedFrom; | |
| 3203 //printf("\t2: adding to module %s instead of module %s\n", m->toChars(), sc->module->toChars()); | |
| 3204 a = m->members; | |
| 3205 if (m->semanticdone >= 3) | |
| 3206 dosemantic3 = 1; | |
| 3207 } | |
| 3208 for (int i = 0; 1; i++) | |
| 3209 { | |
| 3210 if (i == a->dim) | |
| 3211 { | |
| 3212 a->push(this); | |
| 3213 break; | |
| 3214 } | |
| 3215 if (this == (Dsymbol *)a->data[i]) // if already in Array | |
| 3216 break; | |
| 3217 } | |
| 3218 } | |
| 3219 #endif | |
| 3220 | |
| 3221 // Copy the syntax trees from the TemplateDeclaration | |
| 3222 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 3223 | |
| 3224 // Create our own scope for the template parameters | |
| 3225 Scope *scope = tempdecl->scope; | |
| 3226 if (!scope) | |
| 3227 { | |
| 3228 error("forward reference to template declaration %s\n", tempdecl->toChars()); | |
| 3229 return; | |
| 3230 } | |
| 3231 | |
| 3232 #if LOG | |
| 3233 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 3234 #endif | |
| 3235 argsym = new ScopeDsymbol(); | |
| 3236 argsym->parent = scope->parent; | |
| 3237 scope = scope->push(argsym); | |
| 3238 | |
| 3239 // Declare each template parameter as an alias for the argument type | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3240 Scope *paramscope = scope->push(); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3241 paramscope->stc = 0; |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3242 declareParameters(paramscope); |
|
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3243 paramscope->pop(); |
| 336 | 3244 |
| 3245 // Add members of template instance to template instance symbol table | |
| 3246 // parent = scope->scopesym; | |
| 3247 symtab = new DsymbolTable(); | |
| 3248 int memnum = 0; | |
| 3249 for (int i = 0; i < members->dim; i++) | |
| 3250 { | |
| 3251 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3252 #if LOG | |
| 3253 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s->toChars(), s, s->kind(), this->toChars(), memnum); | |
| 3254 #endif | |
| 3255 memnum |= s->addMember(scope, this, memnum); | |
| 3256 } | |
| 3257 #if LOG | |
| 3258 printf("adding members done\n"); | |
| 3259 #endif | |
| 3260 | |
| 3261 /* See if there is only one member of template instance, and that | |
| 3262 * member has the same name as the template instance. | |
| 3263 * If so, this template instance becomes an alias for that member. | |
| 3264 */ | |
| 3265 //printf("members->dim = %d\n", members->dim); | |
| 3266 if (members->dim) | |
| 3267 { | |
| 3268 Dsymbol *s; | |
| 3269 if (Dsymbol::oneMembers(members, &s) && s) | |
| 3270 { | |
| 3271 //printf("s->kind = '%s'\n", s->kind()); | |
| 3272 //s->print(); | |
| 3273 //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars()); | |
| 3274 if (s->ident && s->ident->equals(tempdecl->ident)) | |
| 3275 { | |
| 3276 //printf("setting aliasdecl\n"); | |
| 3277 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
|
3278 |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3279 #if IN_LLVM |
|
1089
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3280 // 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
|
3281 if (tempdecl->llvmInternal) { |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3282 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
|
3283 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
|
3284 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
|
3285 } |
|
d33b0d4b816a
Make sure instantiations of template intrinsics are marked as intrinsics.
Frits van Bommel <fvbommel wxs.nl>
parents:
1067
diff
changeset
|
3286 } |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3287 #endif |
| 336 | 3288 } |
| 3289 } | |
| 3290 } | |
| 3291 | |
| 3292 // Do semantic() analysis on template instance members | |
| 3293 #if LOG | |
| 3294 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 3295 #endif | |
| 3296 Scope *sc2; | |
| 3297 sc2 = scope->push(this); | |
| 3298 //printf("isnested = %d, sc->parent = %s\n", isnested, sc->parent->toChars()); | |
| 3299 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
|
3300 sc2->tinst = this; |
| 336 | 3301 |
| 3302 #if !IN_LLVM | |
| 3303 #if _WIN32 | |
| 3304 __try | |
| 3305 { | |
| 3306 #endif | |
| 3307 #endif | |
| 3308 for (int i = 0; i < members->dim; i++) | |
| 3309 { | |
| 3310 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3311 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s->toChars(), s, s->kind(), this->toChars()); | |
| 3312 //printf("test: isnested = %d, sc2->parent = %s\n", isnested, sc2->parent->toChars()); | |
| 3313 // if (isnested) | |
| 3314 // s->parent = sc->parent; | |
| 3315 //printf("test3: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3316 s->semantic(sc2); | |
| 3317 //printf("test4: isnested = %d, s->parent = %s\n", isnested, s->parent->toChars()); | |
| 3318 sc2->module->runDeferredSemantic(); | |
| 3319 } | |
| 3320 #if !IN_LLVM | |
| 3321 #if _WIN32 | |
| 3322 } | |
| 3323 __except (__ehfilter(GetExceptionInformation())) | |
| 3324 { | |
| 3325 global.gag = 0; // ensure error message gets printed | |
| 3326 error("recursive expansion"); | |
| 3327 fatal(); | |
| 3328 } | |
| 3329 #endif | |
| 3330 #endif | |
| 3331 | |
| 3332 /* If any of the instantiation members didn't get semantic() run | |
| 3333 * on them due to forward references, we cannot run semantic2() | |
| 3334 * or semantic3() yet. | |
| 3335 */ | |
| 3336 for (size_t i = 0; i < Module::deferred.dim; i++) | |
| 3337 { Dsymbol *sd = (Dsymbol *)Module::deferred.data[i]; | |
| 3338 | |
| 3339 if (sd->parent == this) | |
| 3340 goto Laftersemantic; | |
| 3341 } | |
| 3342 | |
| 3343 /* The problem is when to parse the initializer for a variable. | |
| 3344 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 3345 * for initializers inside a function. | |
| 3346 */ | |
| 3347 // if (sc->parent->isFuncDeclaration()) | |
| 3348 | |
| 3349 /* BUG 782: this has problems if the classes this depends on | |
| 3350 * are forward referenced. Find a way to defer semantic() | |
| 3351 * on this template. | |
| 3352 */ | |
| 3353 semantic2(sc2); | |
| 3354 | |
| 3355 if (sc->func || dosemantic3) | |
| 3356 { | |
| 3357 semantic3(sc2); | |
| 3358 } | |
| 3359 | |
| 3360 Laftersemantic: | |
| 3361 sc2->pop(); | |
| 3362 | |
| 3363 scope->pop(); | |
| 3364 | |
| 3365 // Give additional context info if error occurred during instantiation | |
| 3366 if (global.errors != errorsave) | |
| 3367 { | |
| 3368 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
|
3369 if(tinst) |
|
d4e95db0e62b
Introducing template instantiation traces for static asserts and errors within templates.
Christian Kamm <kamm incasoftware de>
parents:
527
diff
changeset
|
3370 tinst->printInstantiationTrace(); |
| 336 | 3371 errors = 1; |
| 3372 if (global.gag) | |
| 3373 tempdecl->instances.remove(tempdecl_instance_idx); | |
| 3374 } | |
| 3375 | |
| 3376 #if LOG | |
| 3377 printf("-TemplateInstance::semantic('%s', this=%p)\n", toChars(), this); | |
| 3378 #endif | |
| 3379 } | |
| 3380 | |
| 3381 | |
| 3382 void TemplateInstance::semanticTiargs(Scope *sc) | |
| 3383 { | |
| 3384 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3385 if (semantictiargsdone) | |
| 3386 return; | |
| 3387 semantictiargsdone = 1; | |
| 3388 semanticTiargs(loc, sc, tiargs); | |
| 3389 } | |
| 3390 | |
| 3391 void TemplateInstance::semanticTiargs(Loc loc, Scope *sc, Objects *tiargs) | |
| 3392 { | |
| 3393 // Run semantic on each argument, place results in tiargs[] | |
| 3394 //printf("+TemplateInstance::semanticTiargs() %s\n", toChars()); | |
| 3395 if (!tiargs) | |
| 3396 return; | |
| 3397 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3398 { | |
| 3399 Object *o = (Object *)tiargs->data[j]; | |
| 3400 Type *ta = isType(o); | |
| 3401 Expression *ea = isExpression(o); | |
| 3402 Dsymbol *sa = isDsymbol(o); | |
| 3403 | |
| 3404 //printf("1: tiargs->data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 3405 if (ta) | |
| 3406 { | |
| 3407 //printf("type %s\n", ta->toChars()); | |
| 3408 // It might really be an Expression or an Alias | |
| 3409 ta->resolve(loc, sc, &ea, &ta, &sa); | |
| 3410 if (ea) | |
| 3411 { | |
| 3412 ea = ea->semantic(sc); | |
| 3413 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3414 tiargs->data[j] = ea; | |
| 3415 } | |
| 3416 else if (sa) | |
| 3417 { tiargs->data[j] = sa; | |
| 3418 TupleDeclaration *d = sa->toAlias()->isTupleDeclaration(); | |
| 3419 if (d) | |
| 3420 { | |
| 3421 size_t dim = d->objects->dim; | |
| 3422 tiargs->remove(j); | |
| 3423 tiargs->insert(j, d->objects); | |
| 3424 j--; | |
| 3425 } | |
| 3426 } | |
| 3427 else if (ta) | |
| 3428 { | |
| 3429 if (ta->ty == Ttuple) | |
| 3430 { // Expand tuple | |
| 3431 TypeTuple *tt = (TypeTuple *)ta; | |
| 3432 size_t dim = tt->arguments->dim; | |
| 3433 tiargs->remove(j); | |
| 3434 if (dim) | |
| 3435 { tiargs->reserve(dim); | |
| 3436 for (size_t i = 0; i < dim; i++) | |
| 3437 { Argument *arg = (Argument *)tt->arguments->data[i]; | |
| 3438 tiargs->insert(j + i, arg->type); | |
| 3439 } | |
| 3440 } | |
| 3441 j--; | |
| 3442 } | |
| 3443 else | |
| 3444 tiargs->data[j] = ta; | |
| 3445 } | |
| 3446 else | |
| 3447 { | |
| 3448 assert(global.errors); | |
| 3449 tiargs->data[j] = Type::terror; | |
| 3450 } | |
| 3451 } | |
| 3452 else if (ea) | |
| 3453 { | |
| 3454 if (!ea) | |
| 3455 { assert(global.errors); | |
| 3456 ea = new IntegerExp(0); | |
| 3457 } | |
| 3458 assert(ea); | |
| 3459 ea = ea->semantic(sc); | |
| 3460 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3461 tiargs->data[j] = ea; | |
| 3462 if (ea->op == TOKtype) | |
| 3463 tiargs->data[j] = ea->type; | |
| 3464 } | |
| 3465 else if (sa) | |
| 3466 { | |
| 3467 } | |
| 3468 else | |
| 3469 { | |
| 3470 assert(0); | |
| 3471 } | |
| 3472 //printf("1: tiargs->data[%d] = %p\n", j, tiargs->data[j]); | |
| 3473 } | |
| 3474 #if 0 | |
| 3475 printf("-TemplateInstance::semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 3476 for (size_t j = 0; j < tiargs->dim; j++) | |
| 3477 { | |
| 3478 Object *o = (Object *)tiargs->data[j]; | |
| 3479 Type *ta = isType(o); | |
| 3480 Expression *ea = isExpression(o); | |
| 3481 Dsymbol *sa = isDsymbol(o); | |
| 3482 Tuple *va = isTuple(o); | |
| 3483 | |
| 3484 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 3485 } | |
| 3486 #endif | |
| 3487 } | |
| 3488 | |
| 3489 /********************************************** | |
| 3490 * Find template declaration corresponding to template instance. | |
| 3491 */ | |
| 3492 | |
| 3493 TemplateDeclaration *TemplateInstance::findTemplateDeclaration(Scope *sc) | |
| 3494 { | |
| 3495 //printf("TemplateInstance::findTemplateDeclaration() %s\n", toChars()); | |
| 3496 if (!tempdecl) | |
| 3497 { | |
| 3498 /* Given: | |
| 3499 * foo!( ... ) | |
| 3500 * figure out which TemplateDeclaration foo refers to. | |
| 3501 */ | |
| 3502 Dsymbol *s; | |
| 3503 Dsymbol *scopesym; | |
| 3504 Identifier *id; | |
| 3505 int i; | |
| 3506 | |
| 3507 id = name; | |
| 3508 s = sc->search(loc, id, &scopesym); | |
| 3509 if (!s) | |
| 3510 { error("identifier '%s' is not defined", id->toChars()); | |
| 3511 return NULL; | |
| 3512 } | |
| 3513 #if LOG | |
| 3514 printf("It's an instance of '%s' kind '%s'\n", s->toChars(), s->kind()); | |
| 3515 if (s->parent) | |
| 3516 printf("s->parent = '%s'\n", s->parent->toChars()); | |
| 3517 #endif | |
| 3518 withsym = scopesym->isWithScopeSymbol(); | |
| 3519 | |
| 3520 /* We might have found an alias within a template when | |
| 3521 * we really want the template. | |
| 3522 */ | |
| 3523 TemplateInstance *ti; | |
| 3524 if (s->parent && | |
| 3525 (ti = s->parent->isTemplateInstance()) != NULL) | |
| 3526 { | |
| 3527 if ( | |
| 3528 (ti->name == id || | |
| 3529 ti->toAlias()->ident == id) | |
| 3530 && | |
| 3531 ti->tempdecl) | |
| 3532 { | |
| 3533 /* This is so that one can refer to the enclosing | |
| 3534 * template, even if it has the same name as a member | |
| 3535 * of the template, if it has a !(arguments) | |
| 3536 */ | |
| 3537 tempdecl = ti->tempdecl; | |
| 3538 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3539 tempdecl = tempdecl->overroot; // then get the start | |
| 3540 s = tempdecl; | |
| 3541 } | |
| 3542 } | |
| 3543 | |
| 3544 s = s->toAlias(); | |
| 3545 | |
| 3546 /* It should be a TemplateDeclaration, not some other symbol | |
| 3547 */ | |
| 3548 tempdecl = s->isTemplateDeclaration(); | |
| 3549 if (!tempdecl) | |
| 3550 { | |
| 3551 if (!s->parent && global.errors) | |
| 3552 return NULL; | |
| 3553 if (!s->parent && s->getType()) | |
| 3554 { Dsymbol *s2 = s->getType()->toDsymbol(sc); | |
| 3555 if (!s2) | |
| 3556 { | |
| 3557 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3558 return NULL; | |
| 3559 } | |
| 3560 s = s2; | |
| 3561 } | |
| 3562 #ifdef DEBUG | |
| 3563 //if (!s->parent) printf("s = %s %s\n", s->kind(), s->toChars()); | |
| 3564 #endif | |
| 3565 //assert(s->parent); | |
| 3566 TemplateInstance *ti = s->parent ? s->parent->isTemplateInstance() : NULL; | |
| 3567 if (ti && | |
| 3568 (ti->name == id || | |
| 3569 ti->toAlias()->ident == id) | |
| 3570 && | |
| 3571 ti->tempdecl) | |
| 3572 { | |
| 3573 /* This is so that one can refer to the enclosing | |
| 3574 * template, even if it has the same name as a member | |
| 3575 * of the template, if it has a !(arguments) | |
| 3576 */ | |
| 3577 tempdecl = ti->tempdecl; | |
| 3578 if (tempdecl->overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 3579 tempdecl = tempdecl->overroot; // then get the start | |
| 3580 } | |
| 3581 else | |
| 3582 { | |
| 3583 error("%s is not a template declaration, it is a %s", id->toChars(), s->kind()); | |
| 3584 return NULL; | |
| 3585 } | |
| 3586 } | |
| 3587 } | |
| 3588 else | |
| 3589 assert(tempdecl->isTemplateDeclaration()); | |
| 3590 return tempdecl; | |
| 3591 } | |
| 3592 | |
| 3593 TemplateDeclaration *TemplateInstance::findBestMatch(Scope *sc) | |
| 3594 { | |
| 3595 /* Since there can be multiple TemplateDeclaration's with the same | |
| 3596 * name, look for the best match. | |
| 3597 */ | |
| 3598 TemplateDeclaration *td_ambig = NULL; | |
| 3599 TemplateDeclaration *td_best = NULL; | |
| 3600 MATCH m_best = MATCHnomatch; | |
| 3601 Objects dedtypes; | |
| 3602 | |
| 3603 #if LOG | |
| 3604 printf("TemplateInstance::findBestMatch()\n"); | |
| 3605 #endif | |
| 3606 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 3607 { | |
| 3608 MATCH m; | |
| 3609 | |
| 3610 //if (tiargs->dim) printf("2: tiargs->dim = %d, data[0] = %p\n", tiargs->dim, tiargs->data[0]); | |
| 3611 | |
| 3612 // If more arguments than parameters, | |
| 3613 // then this is no match. | |
| 3614 if (td->parameters->dim < tiargs->dim) | |
| 3615 { | |
| 3616 if (!td->isVariadic()) | |
| 3617 continue; | |
| 3618 } | |
| 3619 | |
| 3620 dedtypes.setDim(td->parameters->dim); | |
| 3621 dedtypes.zero(); | |
| 3622 if (!td->scope) | |
| 3623 { | |
| 3624 error("forward reference to template declaration %s", td->toChars()); | |
| 3625 return NULL; | |
| 3626 } | |
| 3627 m = td->matchWithInstance(this, &dedtypes, 0); | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3628 //printf("matchWithInstance = %d\n", m); |
| 336 | 3629 if (!m) // no match at all |
| 3630 continue; | |
| 3631 | |
| 3632 if (m < m_best) | |
| 3633 goto Ltd_best; | |
| 3634 if (m > m_best) | |
| 3635 goto Ltd; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3636 |
| 336 | 3637 { |
| 3638 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 3639 int c1 = td->leastAsSpecialized(td_best); | |
| 3640 int c2 = td_best->leastAsSpecialized(td); | |
| 3641 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 3642 | |
| 3643 if (c1 > c2) | |
| 3644 goto Ltd; | |
| 3645 else if (c1 < c2) | |
| 3646 goto Ltd_best; | |
| 3647 else | |
| 3648 goto Lambig; | |
| 3649 } | |
| 3650 | |
| 3651 Lambig: // td_best and td are ambiguous | |
| 3652 td_ambig = td; | |
| 3653 continue; | |
| 3654 | |
| 3655 Ltd_best: // td_best is the best match so far | |
| 3656 td_ambig = NULL; | |
| 3657 continue; | |
| 3658 | |
| 3659 Ltd: // td is the new best match | |
| 3660 td_ambig = NULL; | |
| 3661 td_best = td; | |
| 3662 m_best = m; | |
| 3663 tdtypes.setDim(dedtypes.dim); | |
| 3664 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * sizeof(void *)); | |
| 3665 continue; | |
| 3666 } | |
| 3667 | |
| 3668 if (!td_best) | |
| 3669 { | |
| 3670 error("%s does not match any template declaration", toChars()); | |
| 3671 return NULL; | |
| 3672 } | |
| 3673 if (td_ambig) | |
| 3674 { | |
| 3675 error("%s matches more than one template declaration, %s and %s", | |
| 3676 toChars(), td_best->toChars(), td_ambig->toChars()); | |
| 3677 } | |
| 3678 | |
| 3679 /* The best match is td_best | |
| 3680 */ | |
| 3681 tempdecl = td_best; | |
| 3682 | |
| 3683 #if 0 | |
| 3684 /* Cast any value arguments to be same type as value parameter | |
| 3685 */ | |
| 3686 for (size_t i = 0; i < tiargs->dim; i++) | |
| 3687 { Object *o = (Object *)tiargs->data[i]; | |
| 3688 Expression *ea = isExpression(o); // value argument | |
| 3689 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3690 assert(tp); | |
| 3691 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3692 if (tvp) | |
| 3693 { | |
| 3694 assert(ea); | |
| 3695 ea = ea->castTo(tvp->valType); | |
| 3696 ea = ea->optimize(WANTvalue | WANTinterpret); | |
| 3697 tiargs->data[i] = (Object *)ea; | |
| 3698 } | |
| 3699 } | |
| 3700 #endif | |
| 3701 | |
| 3702 #if LOG | |
| 3703 printf("\tIt's a match with template declaration '%s'\n", tempdecl->toChars()); | |
| 3704 #endif | |
| 3705 return tempdecl; | |
| 3706 } | |
| 3707 | |
| 3708 | |
| 3709 /***************************************** | |
| 3710 * Determines if a TemplateInstance will need a nested | |
| 3711 * generation of the TemplateDeclaration. | |
| 3712 */ | |
| 3713 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3714 int TemplateInstance::hasNestedArgs(Objects *args) |
| 336 | 3715 { int nested = 0; |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3716 //printf("TemplateInstance::hasNestedArgs('%s')\n", tempdecl->ident->toChars()); |
| 336 | 3717 |
| 3718 /* A nested instance happens when an argument references a local | |
| 3719 * symbol that is on the stack. | |
| 3720 */ | |
| 3721 for (size_t i = 0; i < args->dim; i++) | |
| 3722 { Object *o = (Object *)args->data[i]; | |
| 3723 Expression *ea = isExpression(o); | |
| 3724 Dsymbol *sa = isDsymbol(o); | |
| 3725 Tuple *va = isTuple(o); | |
| 3726 if (ea) | |
| 3727 { | |
| 3728 if (ea->op == TOKvar) | |
| 3729 { | |
| 3730 sa = ((VarExp *)ea)->var; | |
| 3731 goto Lsa; | |
| 3732 } | |
| 3733 if (ea->op == TOKfunction) | |
| 3734 { | |
| 3735 sa = ((FuncExp *)ea)->fd; | |
| 3736 goto Lsa; | |
| 3737 } | |
| 3738 } | |
| 3739 else if (sa) | |
| 3740 { | |
| 3741 Lsa: | |
| 3742 Declaration *d = sa->isDeclaration(); | |
| 3743 if (d && !d->isDataseg() && | |
| 3744 #if DMDV2 | |
| 3745 !(d->storage_class & STCmanifest) && | |
| 3746 #endif | |
| 3747 (!d->isFuncDeclaration() || d->isFuncDeclaration()->isNested()) && | |
| 3748 !isTemplateMixin()) | |
| 3749 { | |
| 3750 // if module level template | |
| 3751 if (tempdecl->toParent()->isModule()) | |
| 3752 { Dsymbol *dparent = d->toParent(); | |
| 3753 if (!isnested) | |
| 3754 isnested = dparent; | |
| 3755 else if (isnested != dparent) | |
| 3756 { | |
| 3757 /* Select the more deeply nested of the two. | |
| 3758 * Error if one is not nested inside the other. | |
| 3759 */ | |
| 3760 for (Dsymbol *p = isnested; p; p = p->parent) | |
| 3761 { | |
| 3762 if (p == dparent) | |
| 3763 goto L1; // isnested is most nested | |
| 3764 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3765 for (Dsymbol *p = dparent; p; p = p->parent) |
| 336 | 3766 { |
| 3767 if (p == isnested) | |
| 3768 { isnested = dparent; | |
| 3769 goto L1; // dparent is most nested | |
| 3770 } | |
| 3771 } | |
|
876
27a379f288bf
Merged DMD 1.039
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
875
diff
changeset
|
3772 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
|
3773 toChars(), isnested->toChars(), dparent->toChars()); |
| 336 | 3774 } |
| 3775 L1: | |
| 3776 //printf("\tnested inside %s\n", isnested->toChars()); | |
| 3777 nested |= 1; | |
| 3778 } | |
| 3779 else | |
| 3780 error("cannot use local '%s' as template parameter", d->toChars()); | |
| 3781 } | |
| 3782 } | |
| 3783 else if (va) | |
| 3784 { | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3785 nested |= hasNestedArgs(&va->objects); |
| 336 | 3786 } |
| 3787 } | |
| 3788 return nested; | |
| 3789 } | |
| 3790 | |
| 3791 /**************************************** | |
| 3792 * This instance needs an identifier for name mangling purposes. | |
| 3793 * Create one by taking the template declaration name and adding | |
| 3794 * the type signature for it. | |
| 3795 */ | |
| 3796 | |
| 3797 Identifier *TemplateInstance::genIdent() | |
| 3798 { OutBuffer buf; | |
| 3799 char *id; | |
| 3800 Objects *args; | |
| 3801 | |
| 3802 //printf("TemplateInstance::genIdent('%s')\n", tempdecl->ident->toChars()); | |
| 3803 id = tempdecl->ident->toChars(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3804 buf.printf("__T%zu%s", strlen(id), id); |
| 336 | 3805 args = tiargs; |
| 3806 for (int i = 0; i < args->dim; i++) | |
| 3807 { Object *o = (Object *)args->data[i]; | |
| 3808 Type *ta = isType(o); | |
| 3809 Expression *ea = isExpression(o); | |
| 3810 Dsymbol *sa = isDsymbol(o); | |
| 3811 Tuple *va = isTuple(o); | |
| 3812 //printf("\to %p ta %p ea %p sa %p va %p\n", o, ta, ea, sa, va); | |
| 3813 if (ta) | |
| 3814 { | |
| 3815 buf.writeByte('T'); | |
| 3816 if (ta->deco) | |
| 3817 buf.writestring(ta->deco); | |
| 3818 else | |
| 3819 { | |
| 3820 #ifdef DEBUG | |
| 3821 printf("ta = %d, %s\n", ta->ty, ta->toChars()); | |
| 3822 #endif | |
| 3823 assert(global.errors); | |
| 3824 } | |
| 3825 } | |
| 3826 else if (ea) | |
| 3827 { sinteger_t v; | |
| 3828 real_t r; | |
| 3829 | |
| 3830 if (ea->op == TOKvar) | |
| 3831 { | |
| 3832 sa = ((VarExp *)ea)->var; | |
| 3833 ea = NULL; | |
| 3834 goto Lsa; | |
| 3835 } | |
| 3836 if (ea->op == TOKfunction) | |
| 3837 { | |
| 3838 sa = ((FuncExp *)ea)->fd; | |
| 3839 ea = NULL; | |
| 3840 goto Lsa; | |
| 3841 } | |
| 3842 buf.writeByte('V'); | |
| 3843 if (ea->op == TOKtuple) | |
| 3844 { ea->error("tuple is not a valid template value argument"); | |
| 3845 continue; | |
| 3846 } | |
| 3847 #if 1 | |
| 3848 /* Use deco that matches what it would be for a function parameter | |
| 3849 */ | |
| 3850 buf.writestring(ea->type->deco); | |
| 3851 #else | |
| 3852 // Use type of parameter, not type of argument | |
| 3853 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3854 assert(tp); | |
| 3855 TemplateValueParameter *tvp = tp->isTemplateValueParameter(); | |
| 3856 assert(tvp); | |
| 3857 buf.writestring(tvp->valType->deco); | |
| 3858 #endif | |
| 3859 ea->toMangleBuffer(&buf); | |
| 3860 } | |
| 3861 else if (sa) | |
| 3862 { | |
| 3863 Lsa: | |
| 3864 buf.writeByte('S'); | |
| 3865 Declaration *d = sa->isDeclaration(); | |
| 3866 if (d && !d->type->deco) | |
| 3867 error("forward reference of %s", d->toChars()); | |
| 3868 else | |
| 3869 { | |
| 3870 char *p = sa->mangle(); | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1089
diff
changeset
|
3871 buf.printf("%zu%s", strlen(p), p); |
| 336 | 3872 } |
| 3873 } | |
| 3874 else if (va) | |
| 3875 { | |
| 3876 assert(i + 1 == args->dim); // must be last one | |
| 3877 args = &va->objects; | |
| 3878 i = -1; | |
| 3879 } | |
| 3880 else | |
| 3881 assert(0); | |
| 3882 } | |
| 3883 buf.writeByte('Z'); | |
| 3884 id = buf.toChars(); | |
| 3885 buf.data = NULL; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3886 //printf("\tgenIdent = %s\n", id); |
| 336 | 3887 return new Identifier(id, TOKidentifier); |
| 3888 } | |
| 3889 | |
| 3890 | |
| 3891 /**************************************************** | |
| 3892 * Declare parameters of template instance, initialize them with the | |
| 3893 * template instance arguments. | |
| 3894 */ | |
| 3895 | |
| 3896 void TemplateInstance::declareParameters(Scope *scope) | |
| 3897 { | |
| 3898 //printf("TemplateInstance::declareParameters()\n"); | |
| 3899 for (int i = 0; i < tdtypes.dim; i++) | |
| 3900 { | |
| 3901 TemplateParameter *tp = (TemplateParameter *)tempdecl->parameters->data[i]; | |
| 3902 //Object *o = (Object *)tiargs->data[i]; | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
3903 Object *o = (Object *)tdtypes.data[i]; // initializer for tp |
| 336 | 3904 |
| 3905 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 3906 tempdecl->declareParameter(scope, tp, o); | |
| 3907 } | |
| 3908 } | |
| 3909 | |
| 3910 | |
| 3911 void TemplateInstance::semantic2(Scope *sc) | |
| 3912 { int i; | |
| 3913 | |
| 3914 if (semanticdone >= 2) | |
| 3915 return; | |
| 3916 semanticdone = 2; | |
| 3917 #if LOG | |
| 3918 printf("+TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3919 #endif | |
| 3920 if (!errors && members) | |
| 3921 { | |
| 3922 sc = tempdecl->scope; | |
| 3923 assert(sc); | |
| 3924 sc = sc->push(argsym); | |
| 3925 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
|
3926 sc->tinst = this; |
| 336 | 3927 for (i = 0; i < members->dim; i++) |
| 3928 { | |
| 3929 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3930 #if LOG | |
| 3931 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 3932 #endif | |
| 3933 s->semantic2(sc); | |
| 3934 } | |
| 3935 sc = sc->pop(); | |
| 3936 sc->pop(); | |
| 3937 } | |
| 3938 #if LOG | |
| 3939 printf("-TemplateInstance::semantic2('%s')\n", toChars()); | |
| 3940 #endif | |
| 3941 } | |
| 3942 | |
| 3943 void TemplateInstance::semantic3(Scope *sc) | |
| 3944 { | |
| 3945 #if LOG | |
| 3946 printf("TemplateInstance::semantic3('%s'), semanticdone = %d\n", toChars(), semanticdone); | |
| 3947 #endif | |
| 3948 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 3949 if (semanticdone >= 3) | |
| 3950 return; | |
| 3951 semanticdone = 3; | |
| 3952 if (!errors && members) | |
| 3953 { | |
| 3954 sc = tempdecl->scope; | |
| 3955 sc = sc->push(argsym); | |
| 3956 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
|
3957 sc->tinst = this; |
| 336 | 3958 for (int i = 0; i < members->dim; i++) |
| 3959 { | |
| 3960 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3961 s->semantic3(sc); | |
| 3962 } | |
| 3963 sc = sc->pop(); | |
| 3964 sc->pop(); | |
| 3965 } | |
| 3966 } | |
| 3967 | |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3968 #if IN_DMD |
|
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3969 |
| 336 | 3970 void TemplateInstance::toObjFile(int multiobj) |
| 3971 { | |
| 3972 #if LOG | |
| 3973 printf("TemplateInstance::toObjFile('%s', this = %p)\n", toChars(), this); | |
| 3974 #endif | |
| 3975 if (!errors && members) | |
| 3976 { | |
| 3977 if (multiobj) | |
| 3978 // Append to list of object files to be written later | |
| 3979 //obj_append(this); | |
| 3980 assert(0 && "multiobj"); | |
| 3981 else | |
| 3982 { | |
| 3983 for (int i = 0; i < members->dim; i++) | |
| 3984 { | |
| 3985 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 3986 s->toObjFile(multiobj); | |
| 3987 } | |
| 3988 } | |
| 3989 } | |
| 3990 } | |
| 3991 | |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3992 #endif |
|
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
3993 |
| 336 | 3994 void TemplateInstance::inlineScan() |
| 3995 { | |
| 3996 #if LOG | |
| 3997 printf("TemplateInstance::inlineScan('%s')\n", toChars()); | |
| 3998 #endif | |
| 3999 if (!errors && members) | |
| 4000 { | |
| 4001 for (int i = 0; i < members->dim; i++) | |
| 4002 { | |
| 4003 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4004 s->inlineScan(); | |
| 4005 } | |
| 4006 } | |
| 4007 } | |
| 4008 | |
| 4009 void TemplateInstance::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4010 { | |
| 4011 int i; | |
| 4012 | |
| 4013 Identifier *id = name; | |
| 4014 buf->writestring(id->toChars()); | |
| 4015 buf->writestring("!("); | |
| 4016 if (nest) | |
| 4017 buf->writestring("..."); | |
| 4018 else | |
| 4019 { | |
| 4020 nest++; | |
| 4021 Objects *args = tiargs; | |
| 4022 for (i = 0; i < args->dim; i++) | |
| 4023 { | |
| 4024 if (i) | |
| 4025 buf->writeByte(','); | |
| 4026 Object *oarg = (Object *)args->data[i]; | |
| 4027 ObjectToCBuffer(buf, hgs, oarg); | |
| 4028 } | |
| 4029 nest--; | |
| 4030 } | |
| 4031 buf->writeByte(')'); | |
| 4032 } | |
| 4033 | |
| 4034 | |
| 4035 Dsymbol *TemplateInstance::toAlias() | |
| 4036 { | |
| 4037 #if LOG | |
| 4038 printf("TemplateInstance::toAlias()\n"); | |
| 4039 #endif | |
| 4040 if (!inst) | |
| 4041 { error("cannot resolve forward reference"); | |
| 4042 return this; | |
| 4043 } | |
| 4044 | |
| 4045 if (inst != this) | |
| 4046 return inst->toAlias(); | |
| 4047 | |
| 4048 if (aliasdecl) | |
| 4049 return aliasdecl->toAlias(); | |
| 4050 | |
| 4051 return inst; | |
| 4052 } | |
| 4053 | |
| 4054 AliasDeclaration *TemplateInstance::isAliasDeclaration() | |
| 4055 { | |
| 4056 return aliasdecl; | |
| 4057 } | |
| 4058 | |
| 4059 const char *TemplateInstance::kind() | |
| 4060 { | |
| 4061 return "template instance"; | |
| 4062 } | |
| 4063 | |
| 4064 int TemplateInstance::oneMember(Dsymbol **ps) | |
| 4065 { | |
| 4066 *ps = NULL; | |
| 4067 return TRUE; | |
| 4068 } | |
| 4069 | |
| 4070 char *TemplateInstance::toChars() | |
| 4071 { | |
| 4072 OutBuffer buf; | |
| 4073 HdrGenState hgs; | |
| 4074 char *s; | |
| 4075 | |
| 4076 toCBuffer(&buf, &hgs); | |
| 4077 s = buf.toChars(); | |
| 4078 buf.data = NULL; | |
| 4079 return s; | |
| 4080 } | |
| 4081 | |
|
561
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4082 void TemplateInstance::printInstantiationTrace() |
|
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4083 { |
|
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4084 if(global.gag) |
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4085 return; |
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4086 |
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4087 const int max_shown = 6; |
|
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4088 |
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|
4089 // determine instantiation depth |
|
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4090 int n_instantiations = 1; |
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4091 TemplateInstance* cur = this; |
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4092 while(cur = cur->tinst) |
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4093 ++n_instantiations; |
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4094 |
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4095 // show full trace only if it's short or verbose is on |
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4096 if(n_instantiations <= max_shown || global.params.verbose) |
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4097 { |
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4098 cur = this; |
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4099 while(cur) |
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4100 { |
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4101 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
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4102 cur = cur->tinst; |
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4103 } |
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4104 } |
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4105 else |
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4106 { |
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4107 cur = this; |
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4108 size_t i = 0; |
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4109 for(; i < max_shown/2; ++i, cur = cur->tinst) |
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4110 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
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4111 fprintf(stdmsg," ... (%d instantiations, -v to show) ...\n", n_instantiations - max_shown); |
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4112 for(; i < n_instantiations - max_shown + max_shown/2; ++i, cur = cur->tinst) |
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4113 {} |
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4114 for(; i < n_instantiations; ++i, cur = cur->tinst) |
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4115 fprintf(stdmsg," instantiatied in %s: %s\n", cur->loc.toChars(), cur->toChars()); |
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4116 } |
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4117 } |
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4118 |
| 336 | 4119 /* ======================== TemplateMixin ================================ */ |
| 4120 | |
| 4121 TemplateMixin::TemplateMixin(Loc loc, Identifier *ident, Type *tqual, | |
| 4122 Array *idents, Objects *tiargs) | |
| 4123 : TemplateInstance(loc, (Identifier *)idents->data[idents->dim - 1]) | |
| 4124 { | |
| 4125 //printf("TemplateMixin(ident = '%s')\n", ident ? ident->toChars() : ""); | |
| 4126 this->ident = ident; | |
| 4127 this->tqual = tqual; | |
| 4128 this->idents = idents; | |
| 4129 this->tiargs = tiargs ? tiargs : new Objects(); | |
| 4130 this->scope = NULL; | |
| 4131 } | |
| 4132 | |
| 4133 Dsymbol *TemplateMixin::syntaxCopy(Dsymbol *s) | |
| 4134 { TemplateMixin *tm; | |
| 4135 | |
| 4136 Array *ids = new Array(); | |
| 4137 ids->setDim(idents->dim); | |
| 4138 for (int i = 0; i < idents->dim; i++) | |
| 4139 { // Matches TypeQualified::syntaxCopyHelper() | |
| 4140 Identifier *id = (Identifier *)idents->data[i]; | |
| 4141 if (id->dyncast() == DYNCAST_DSYMBOL) | |
| 4142 { | |
| 4143 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4144 | |
| 4145 ti = (TemplateInstance *)ti->syntaxCopy(NULL); | |
| 4146 id = (Identifier *)ti; | |
| 4147 } | |
| 4148 ids->data[i] = id; | |
| 4149 } | |
| 4150 | |
| 4151 tm = new TemplateMixin(loc, ident, | |
| 4152 (Type *)(tqual ? tqual->syntaxCopy() : NULL), | |
| 4153 ids, tiargs); | |
| 4154 TemplateInstance::syntaxCopy(tm); | |
| 4155 return tm; | |
| 4156 } | |
| 4157 | |
| 4158 void TemplateMixin::semantic(Scope *sc) | |
| 4159 { | |
| 4160 #if LOG | |
| 4161 printf("+TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4162 fflush(stdout); | |
| 4163 #endif | |
| 4164 if (semanticdone && | |
| 4165 // This for when a class/struct contains mixin members, and | |
| 4166 // is done over because of forward references | |
| 4167 (!parent || !toParent()->isAggregateDeclaration())) | |
| 4168 { | |
| 4169 #if LOG | |
| 4170 printf("\tsemantic done\n"); | |
| 4171 #endif | |
| 4172 return; | |
| 4173 } | |
| 4174 if (!semanticdone) | |
| 4175 semanticdone = 1; | |
| 4176 #if LOG | |
| 4177 printf("\tdo semantic\n"); | |
| 4178 #endif | |
| 4179 | |
| 4180 #if !IN_LLVM | |
| 4181 // dont know what this is | |
| 4182 util_progress(); | |
| 4183 #endif | |
| 4184 | |
| 4185 Scope *scx = NULL; | |
| 4186 if (scope) | |
| 4187 { sc = scope; | |
| 4188 scx = scope; // save so we don't make redundant copies | |
| 4189 scope = NULL; | |
| 4190 } | |
| 4191 | |
| 4192 // Follow qualifications to find the TemplateDeclaration | |
| 4193 if (!tempdecl) | |
| 4194 { Dsymbol *s; | |
| 4195 int i; | |
| 4196 Identifier *id; | |
| 4197 | |
| 4198 if (tqual) | |
| 4199 { s = tqual->toDsymbol(sc); | |
| 4200 i = 0; | |
| 4201 } | |
| 4202 else | |
| 4203 { | |
| 4204 i = 1; | |
| 4205 id = (Identifier *)idents->data[0]; | |
| 4206 switch (id->dyncast()) | |
| 4207 { | |
| 4208 case DYNCAST_IDENTIFIER: | |
| 4209 s = sc->search(loc, id, NULL); | |
| 4210 break; | |
| 4211 | |
| 4212 case DYNCAST_DSYMBOL: | |
| 4213 { | |
| 4214 TemplateInstance *ti = (TemplateInstance *)id; | |
| 4215 ti->semantic(sc); | |
| 4216 s = ti; | |
| 4217 break; | |
| 4218 } | |
| 4219 default: | |
| 4220 assert(0); | |
| 4221 } | |
| 4222 } | |
| 4223 | |
| 4224 for (; i < idents->dim; i++) | |
| 4225 { | |
| 4226 if (!s) | |
| 4227 break; | |
| 4228 id = (Identifier *)idents->data[i]; | |
| 4229 s = s->searchX(loc, sc, id); | |
| 4230 } | |
| 4231 if (!s) | |
| 4232 { | |
| 4233 error("is not defined"); | |
| 4234 inst = this; | |
| 4235 return; | |
| 4236 } | |
| 4237 tempdecl = s->toAlias()->isTemplateDeclaration(); | |
| 4238 if (!tempdecl) | |
| 4239 { | |
| 4240 error("%s isn't a template", s->toChars()); | |
| 4241 inst = this; | |
| 4242 return; | |
| 4243 } | |
| 4244 } | |
| 4245 | |
| 4246 // Look for forward reference | |
| 4247 assert(tempdecl); | |
| 4248 for (TemplateDeclaration *td = tempdecl; td; td = td->overnext) | |
| 4249 { | |
| 4250 if (!td->scope) | |
| 4251 { | |
| 4252 /* Cannot handle forward references if mixin is a struct member, | |
| 4253 * because addField must happen during struct's semantic, not | |
| 4254 * during the mixin semantic. | |
| 4255 * runDeferred will re-run mixin's semantic outside of the struct's | |
| 4256 * semantic. | |
| 4257 */ | |
| 4258 semanticdone = 0; | |
| 4259 AggregateDeclaration *ad = toParent()->isAggregateDeclaration(); | |
| 4260 if (ad) | |
| 4261 ad->sizeok = 2; | |
| 4262 else | |
| 4263 { | |
| 4264 // Forward reference | |
| 4265 //printf("forward reference - deferring\n"); | |
| 4266 scope = scx ? scx : new Scope(*sc); | |
| 4267 scope->setNoFree(); | |
| 4268 scope->module->addDeferredSemantic(this); | |
| 4269 } | |
| 4270 return; | |
| 4271 } | |
| 4272 } | |
| 4273 | |
| 4274 // Run semantic on each argument, place results in tiargs[] | |
| 4275 semanticTiargs(sc); | |
| 4276 | |
| 4277 tempdecl = findBestMatch(sc); | |
| 4278 if (!tempdecl) | |
| 4279 { inst = this; | |
| 4280 return; // error recovery | |
| 4281 } | |
| 4282 | |
| 4283 if (!ident) | |
| 4284 ident = genIdent(); | |
| 4285 | |
| 4286 inst = this; | |
| 4287 parent = sc->parent; | |
| 4288 | |
| 4289 /* Detect recursive mixin instantiations. | |
| 4290 */ | |
| 4291 for (Dsymbol *s = parent; s; s = s->parent) | |
| 4292 { | |
| 4293 //printf("\ts = '%s'\n", s->toChars()); | |
| 4294 TemplateMixin *tm = s->isTemplateMixin(); | |
| 4295 if (!tm || tempdecl != tm->tempdecl) | |
| 4296 continue; | |
| 4297 | |
| 4298 /* Different argument list lengths happen with variadic args | |
| 4299 */ | |
| 4300 if (tiargs->dim != tm->tiargs->dim) | |
| 4301 continue; | |
| 4302 | |
| 4303 for (int i = 0; i < tiargs->dim; i++) | |
| 4304 { Object *o = (Object *)tiargs->data[i]; | |
| 4305 Type *ta = isType(o); | |
| 4306 Expression *ea = isExpression(o); | |
| 4307 Dsymbol *sa = isDsymbol(o); | |
| 4308 Object *tmo = (Object *)tm->tiargs->data[i]; | |
| 4309 if (ta) | |
| 4310 { | |
| 4311 Type *tmta = isType(tmo); | |
| 4312 if (!tmta) | |
| 4313 goto Lcontinue; | |
| 4314 if (!ta->equals(tmta)) | |
| 4315 goto Lcontinue; | |
| 4316 } | |
| 4317 else if (ea) | |
| 4318 { Expression *tme = isExpression(tmo); | |
| 4319 if (!tme || !ea->equals(tme)) | |
| 4320 goto Lcontinue; | |
| 4321 } | |
| 4322 else if (sa) | |
| 4323 { | |
| 4324 Dsymbol *tmsa = isDsymbol(tmo); | |
| 4325 if (sa != tmsa) | |
| 4326 goto Lcontinue; | |
| 4327 } | |
| 4328 else | |
| 4329 assert(0); | |
| 4330 } | |
| 4331 error("recursive mixin instantiation"); | |
| 4332 return; | |
| 4333 | |
| 4334 Lcontinue: | |
| 4335 continue; | |
| 4336 } | |
| 4337 | |
| 4338 // Copy the syntax trees from the TemplateDeclaration | |
| 4339 members = Dsymbol::arraySyntaxCopy(tempdecl->members); | |
| 4340 if (!members) | |
| 4341 return; | |
| 4342 | |
| 4343 symtab = new DsymbolTable(); | |
| 4344 | |
| 4345 for (Scope *sce = sc; 1; sce = sce->enclosing) | |
| 4346 { | |
| 4347 ScopeDsymbol *sds = (ScopeDsymbol *)sce->scopesym; | |
| 4348 if (sds) | |
| 4349 { | |
| 4350 sds->importScope(this, PROTpublic); | |
| 4351 break; | |
| 4352 } | |
| 4353 } | |
| 4354 | |
| 4355 #if LOG | |
| 4356 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 4357 #endif | |
| 4358 Scope *scy = sc; | |
| 4359 scy = sc->push(this); | |
| 4360 scy->parent = this; | |
| 4361 | |
| 4362 argsym = new ScopeDsymbol(); | |
| 4363 argsym->parent = scy->parent; | |
| 4364 Scope *scope = scy->push(argsym); | |
| 4365 | |
| 4366 unsigned errorsave = global.errors; | |
| 4367 | |
| 4368 // Declare each template parameter as an alias for the argument type | |
| 4369 declareParameters(scope); | |
| 4370 | |
| 4371 // Add members to enclosing scope, as well as this scope | |
| 4372 for (unsigned i = 0; i < members->dim; i++) | |
| 4373 { Dsymbol *s; | |
| 4374 | |
| 4375 s = (Dsymbol *)members->data[i]; | |
| 4376 s->addMember(scope, this, i); | |
| 4377 //sc->insert(s); | |
| 4378 //printf("sc->parent = %p, sc->scopesym = %p\n", sc->parent, sc->scopesym); | |
| 4379 //printf("s->parent = %s\n", s->parent->toChars()); | |
| 4380 } | |
| 4381 | |
| 4382 // Do semantic() analysis on template instance members | |
| 4383 #if LOG | |
| 4384 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 4385 #endif | |
| 4386 Scope *sc2; | |
| 4387 sc2 = scope->push(this); | |
| 4388 sc2->offset = sc->offset; | |
| 4389 for (int i = 0; i < members->dim; i++) | |
| 4390 { | |
| 4391 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4392 s->semantic(sc2); | |
| 4393 } | |
| 4394 sc->offset = sc2->offset; | |
| 4395 | |
| 4396 /* The problem is when to parse the initializer for a variable. | |
| 4397 * Perhaps VarDeclaration::semantic() should do it like it does | |
| 4398 * for initializers inside a function. | |
| 4399 */ | |
| 4400 // if (sc->parent->isFuncDeclaration()) | |
| 4401 | |
| 4402 semantic2(sc2); | |
| 4403 | |
| 4404 if (sc->func) | |
| 4405 { | |
| 4406 semantic3(sc2); | |
| 4407 } | |
| 4408 | |
| 4409 // Give additional context info if error occurred during instantiation | |
| 4410 if (global.errors != errorsave) | |
| 4411 { | |
| 4412 error("error instantiating"); | |
| 4413 } | |
| 4414 | |
| 4415 sc2->pop(); | |
| 4416 | |
| 4417 scope->pop(); | |
| 4418 | |
| 4419 // if (!isAnonymous()) | |
| 4420 { | |
| 4421 scy->pop(); | |
| 4422 } | |
| 4423 #if LOG | |
| 4424 printf("-TemplateMixin::semantic('%s', this=%p)\n", toChars(), this); | |
| 4425 #endif | |
| 4426 } | |
| 4427 | |
| 4428 void TemplateMixin::semantic2(Scope *sc) | |
| 4429 { int i; | |
| 4430 | |
| 4431 if (semanticdone >= 2) | |
| 4432 return; | |
| 4433 semanticdone = 2; | |
| 4434 #if LOG | |
| 4435 printf("+TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4436 #endif | |
| 4437 if (members) | |
| 4438 { | |
| 4439 assert(sc); | |
| 4440 sc = sc->push(argsym); | |
| 4441 sc = sc->push(this); | |
| 4442 for (i = 0; i < members->dim; i++) | |
| 4443 { | |
| 4444 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4445 #if LOG | |
| 4446 printf("\tmember '%s', kind = '%s'\n", s->toChars(), s->kind()); | |
| 4447 #endif | |
| 4448 s->semantic2(sc); | |
| 4449 } | |
| 4450 sc = sc->pop(); | |
| 4451 sc->pop(); | |
| 4452 } | |
| 4453 #if LOG | |
| 4454 printf("-TemplateMixin::semantic2('%s')\n", toChars()); | |
| 4455 #endif | |
| 4456 } | |
| 4457 | |
| 4458 void TemplateMixin::semantic3(Scope *sc) | |
| 4459 { int i; | |
| 4460 | |
| 4461 if (semanticdone >= 3) | |
| 4462 return; | |
| 4463 semanticdone = 3; | |
| 4464 #if LOG | |
| 4465 printf("TemplateMixin::semantic3('%s')\n", toChars()); | |
| 4466 #endif | |
| 4467 if (members) | |
| 4468 { | |
| 4469 sc = sc->push(argsym); | |
| 4470 sc = sc->push(this); | |
| 4471 for (i = 0; i < members->dim; i++) | |
| 4472 { | |
| 4473 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4474 s->semantic3(sc); | |
| 4475 } | |
| 4476 sc = sc->pop(); | |
| 4477 sc->pop(); | |
| 4478 } | |
| 4479 } | |
| 4480 | |
| 4481 void TemplateMixin::inlineScan() | |
| 4482 { | |
| 4483 TemplateInstance::inlineScan(); | |
| 4484 } | |
| 4485 | |
| 4486 const char *TemplateMixin::kind() | |
| 4487 { | |
| 4488 return "mixin"; | |
| 4489 } | |
| 4490 | |
| 4491 int TemplateMixin::oneMember(Dsymbol **ps) | |
| 4492 { | |
| 4493 return Dsymbol::oneMember(ps); | |
| 4494 } | |
| 4495 | |
| 4496 int TemplateMixin::hasPointers() | |
| 4497 { | |
| 4498 //printf("TemplateMixin::hasPointers() %s\n", toChars()); | |
| 4499 for (size_t i = 0; i < members->dim; i++) | |
| 4500 { | |
| 4501 Dsymbol *s = (Dsymbol *)members->data[i]; | |
| 4502 //printf(" s = %s %s\n", s->kind(), s->toChars()); | |
| 4503 if (s->hasPointers()) | |
| 4504 { | |
| 4505 return 1; | |
| 4506 } | |
| 4507 } | |
| 4508 return 0; | |
| 4509 } | |
| 4510 | |
| 4511 char *TemplateMixin::toChars() | |
| 4512 { | |
| 4513 OutBuffer buf; | |
| 4514 HdrGenState hgs; | |
| 4515 char *s; | |
| 4516 | |
| 4517 TemplateInstance::toCBuffer(&buf, &hgs); | |
| 4518 s = buf.toChars(); | |
| 4519 buf.data = NULL; | |
| 4520 return s; | |
| 4521 } | |
| 4522 | |
| 4523 void TemplateMixin::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4524 { | |
| 4525 buf->writestring("mixin "); | |
| 4526 | |
| 4527 for (int i = 0; i < idents->dim; i++) | |
| 4528 { Identifier *id = (Identifier *)idents->data[i]; | |
| 4529 | |
| 4530 if (i) | |
| 4531 buf->writeByte('.'); | |
| 4532 buf->writestring(id->toChars()); | |
| 4533 } | |
| 4534 buf->writestring("!("); | |
| 4535 if (tiargs) | |
| 4536 { | |
| 4537 for (int i = 0; i < tiargs->dim; i++) | |
| 4538 { if (i) | |
| 4539 buf->writebyte(','); | |
| 4540 Object *oarg = (Object *)tiargs->data[i]; | |
| 4541 Type *t = isType(oarg); | |
| 4542 Expression *e = isExpression(oarg); | |
| 4543 Dsymbol *s = isDsymbol(oarg); | |
| 4544 if (t) | |
| 4545 t->toCBuffer(buf, NULL, hgs); | |
| 4546 else if (e) | |
| 4547 e->toCBuffer(buf, hgs); | |
| 4548 else if (s) | |
| 4549 { | |
| 4550 char *p = s->ident ? s->ident->toChars() : s->toChars(); | |
| 4551 buf->writestring(p); | |
| 4552 } | |
| 4553 else if (!oarg) | |
| 4554 { | |
| 4555 buf->writestring("NULL"); | |
| 4556 } | |
| 4557 else | |
| 4558 { | |
| 4559 assert(0); | |
| 4560 } | |
| 4561 } | |
| 4562 } | |
| 4563 buf->writebyte(')'); | |
| 4564 if (ident) | |
| 4565 { | |
| 4566 buf->writebyte(' '); | |
| 4567 buf->writestring(ident->toChars()); | |
| 4568 } | |
| 4569 buf->writebyte(';'); | |
| 4570 buf->writenl(); | |
| 4571 } | |
| 4572 | |
| 4573 | |
|
1147
dbe4af57b240
Changed use of toObjFile to a new codegen method.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1146
diff
changeset
|
4574 #if IN_DMD |
| 336 | 4575 void TemplateMixin::toObjFile(int multiobj) |
| 4576 { | |
| 4577 //printf("TemplateMixin::toObjFile('%s')\n", toChars()); | |
| 4578 TemplateInstance::toObjFile(multiobj); | |
| 4579 } | |
|
1174
0b26cfb2d445
Add newlines to end of file.
Christian Kamm <kamm incasoftware de>
parents:
1147
diff
changeset
|
4580 #endif |
|
0b26cfb2d445
Add newlines to end of file.
Christian Kamm <kamm incasoftware de>
parents:
1147
diff
changeset
|
4581 |