Mercurial > projects > ldc
annotate dmd/func.c @ 50:6fcc08a4d406 trunk
[svn r54] Added support for nested delegates referencing parent's stack variables.
Replaced tester.sh with a version written in D.
A few bugfixes.
author | lindquist |
---|---|
date | Mon, 22 Oct 2007 15:40:56 +0200 |
parents | 3cfcb944304e |
children | a9d29e9f1fed |
rev | line source |
---|---|
1 | 1 |
2 // Compiler implementation of the D programming language | |
3 // Copyright (c) 1999-2007 by Digital Mars | |
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 #include <stdio.h> | |
12 #include <assert.h> | |
13 | |
14 #include "mars.h" | |
15 #include "init.h" | |
16 #include "declaration.h" | |
17 #include "attrib.h" | |
18 #include "expression.h" | |
19 #include "scope.h" | |
20 #include "mtype.h" | |
21 #include "aggregate.h" | |
22 #include "identifier.h" | |
23 #include "id.h" | |
24 #include "module.h" | |
25 #include "statement.h" | |
26 #include "template.h" | |
27 #include "hdrgen.h" | |
28 | |
29 #ifdef IN_GCC | |
30 #include "d-dmd-gcc.h" | |
31 #endif | |
32 | |
33 /********************************* FuncDeclaration ****************************/ | |
34 | |
35 FuncDeclaration::FuncDeclaration(Loc loc, Loc endloc, Identifier *id, enum STC storage_class, Type *type) | |
36 : Declaration(id) | |
37 { | |
38 this->storage_class = storage_class; | |
39 this->type = type; | |
40 this->loc = loc; | |
41 this->endloc = endloc; | |
42 fthrows = NULL; | |
43 frequire = NULL; | |
44 outId = NULL; | |
45 vresult = NULL; | |
46 returnLabel = NULL; | |
47 fensure = NULL; | |
48 fbody = NULL; | |
49 localsymtab = NULL; | |
50 vthis = NULL; | |
51 v_arguments = NULL; | |
52 #if IN_GCC | |
53 v_argptr = NULL; | |
54 #endif | |
55 parameters = NULL; | |
56 labtab = NULL; | |
57 overnext = NULL; | |
58 vtblIndex = -1; | |
59 hasReturnExp = 0; | |
60 naked = 0; | |
61 inlineStatus = ILSuninitialized; | |
62 inlineNest = 0; | |
63 inlineAsm = 0; | |
64 cantInterpret = 0; | |
65 semanticRun = 0; | |
66 nestedFrameRef = 0; | |
67 fes = NULL; | |
68 introducing = 0; | |
69 tintro = NULL; | |
70 inferRetType = (type && type->nextOf() == NULL); | |
71 scope = NULL; | |
72 hasReturnExp = 0; | |
73 nrvo_can = 1; | |
74 nrvo_var = NULL; | |
75 shidden = NULL; | |
11
d3ee9efe20e2
[svn r15] * Fixed a bunch problems with virtual calls. Seems I did some rather poor testing.
lindquist
parents:
1
diff
changeset
|
76 llvmQueued = false; |
15
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
parents:
11
diff
changeset
|
77 llvmThisVar = NULL; |
50
6fcc08a4d406
[svn r54] Added support for nested delegates referencing parent's stack variables.
lindquist
parents:
35
diff
changeset
|
78 llvmNested = NULL; |
1 | 79 } |
80 | |
81 Dsymbol *FuncDeclaration::syntaxCopy(Dsymbol *s) | |
82 { | |
83 FuncDeclaration *f; | |
84 | |
85 //printf("FuncDeclaration::syntaxCopy('%s')\n", toChars()); | |
86 if (s) | |
87 f = (FuncDeclaration *)s; | |
88 else | |
89 f = new FuncDeclaration(loc, endloc, ident, (enum STC) storage_class, type->syntaxCopy()); | |
90 f->outId = outId; | |
91 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
92 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
93 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
94 assert(!fthrows); // deprecated | |
95 return f; | |
96 } | |
97 | |
98 | |
99 // Do the semantic analysis on the external interface to the function. | |
100 | |
101 void FuncDeclaration::semantic(Scope *sc) | |
102 { TypeFunction *f; | |
103 StructDeclaration *sd; | |
104 ClassDeclaration *cd; | |
105 InterfaceDeclaration *id; | |
106 | |
107 #if 0 | |
108 printf("FuncDeclaration::semantic(sc = %p, this = %p, '%s', linkage = %d)\n", sc, this, toPrettyChars(), sc->linkage); | |
109 if (isFuncLiteralDeclaration()) | |
110 printf("\tFuncLiteralDeclaration()\n"); | |
111 printf("sc->parent = %s\n", sc->parent->toChars()); | |
112 printf("type: %s\n", type->toChars()); | |
113 #endif | |
114 | |
115 if (type->nextOf()) | |
116 type = type->semantic(loc, sc); | |
117 //type->print(); | |
118 if (type->ty != Tfunction) | |
119 { | |
120 error("%s must be a function", toChars()); | |
121 return; | |
122 } | |
123 f = (TypeFunction *)(type); | |
124 size_t nparams = Argument::dim(f->parameters); | |
125 | |
126 linkage = sc->linkage; | |
127 // if (!parent) | |
128 { | |
129 //parent = sc->scopesym; | |
130 parent = sc->parent; | |
131 } | |
132 protection = sc->protection; | |
133 storage_class |= sc->stc; | |
134 //printf("function storage_class = x%x\n", storage_class); | |
135 Dsymbol *parent = toParent(); | |
136 | |
137 if (isConst() || isAuto() || isScope()) | |
138 error("functions cannot be const or auto"); | |
139 | |
140 if (isAbstract() && !isVirtual()) | |
141 error("non-virtual functions cannot be abstract"); | |
142 #if 0 | |
143 if (isAbstract() && fbody) | |
144 error("abstract functions cannot have bodies"); | |
145 #endif | |
146 | |
147 #if 0 | |
148 if (isStaticConstructor() || isStaticDestructor()) | |
149 { | |
150 if (!isStatic() || type->nextOf()->ty != Tvoid) | |
151 error("static constructors / destructors must be static void"); | |
152 if (f->arguments && f->arguments->dim) | |
153 error("static constructors / destructors must have empty parameter list"); | |
154 // BUG: check for invalid storage classes | |
155 } | |
156 #endif | |
157 | |
158 #ifdef IN_GCC | |
159 AggregateDeclaration *ad; | |
160 | |
161 ad = parent->isAggregateDeclaration(); | |
162 if (ad) | |
163 ad->methods.push(this); | |
164 #endif | |
165 sd = parent->isStructDeclaration(); | |
166 if (sd) | |
167 { | |
168 // Verify no constructors, destructors, etc. | |
169 if (isCtorDeclaration() || | |
170 isDtorDeclaration() | |
171 //|| isInvariantDeclaration() | |
172 //|| isUnitTestDeclaration() | |
173 ) | |
174 { | |
175 error("special member functions not allowed for %ss", sd->kind()); | |
176 } | |
177 | |
178 #if 0 | |
179 if (!sd->inv) | |
180 sd->inv = isInvariantDeclaration(); | |
181 | |
182 if (!sd->aggNew) | |
183 sd->aggNew = isNewDeclaration(); | |
184 | |
185 if (isDelete()) | |
186 { | |
187 if (sd->aggDelete) | |
188 error("multiple delete's for struct %s", sd->toChars()); | |
189 sd->aggDelete = (DeleteDeclaration *)(this); | |
190 } | |
191 #endif | |
192 } | |
193 | |
194 id = parent->isInterfaceDeclaration(); | |
195 if (id) | |
196 { | |
197 storage_class |= STCabstract; | |
198 | |
199 if (isCtorDeclaration() || | |
200 isDtorDeclaration() || | |
201 isInvariantDeclaration() || | |
202 isUnitTestDeclaration() || isNewDeclaration() || isDelete()) | |
203 error("special function not allowed in interface %s", id->toChars()); | |
204 if (fbody) | |
205 error("function body is not abstract in interface %s", id->toChars()); | |
206 } | |
207 | |
208 cd = parent->isClassDeclaration(); | |
209 if (cd) | |
210 { int vi; | |
211 CtorDeclaration *ctor; | |
212 DtorDeclaration *dtor; | |
213 InvariantDeclaration *inv; | |
214 | |
215 if (isCtorDeclaration()) | |
216 { | |
217 // ctor = (CtorDeclaration *)this; | |
218 // if (!cd->ctor) | |
219 // cd->ctor = ctor; | |
220 return; | |
221 } | |
222 | |
223 #if 0 | |
224 dtor = isDtorDeclaration(); | |
225 if (dtor) | |
226 { | |
227 if (cd->dtor) | |
228 error("multiple destructors for class %s", cd->toChars()); | |
229 cd->dtor = dtor; | |
230 } | |
231 | |
232 inv = isInvariantDeclaration(); | |
233 if (inv) | |
234 { | |
235 cd->inv = inv; | |
236 } | |
237 | |
238 if (isNewDeclaration()) | |
239 { | |
240 if (!cd->aggNew) | |
241 cd->aggNew = (NewDeclaration *)(this); | |
242 } | |
243 | |
244 if (isDelete()) | |
245 { | |
246 if (cd->aggDelete) | |
247 error("multiple delete's for class %s", cd->toChars()); | |
248 cd->aggDelete = (DeleteDeclaration *)(this); | |
249 } | |
250 #endif | |
251 | |
252 if (storage_class & STCabstract) | |
253 cd->isabstract = 1; | |
254 | |
255 // if static function, do not put in vtbl[] | |
256 if (!isVirtual()) | |
257 { | |
258 //printf("\tnot virtual\n"); | |
19 | 259 goto Ldone; |
1 | 260 } |
261 | |
262 // Find index of existing function in vtbl[] to override | |
263 if (cd->baseClass) | |
264 { | |
265 for (vi = 0; vi < cd->baseClass->vtbl.dim; vi++) | |
266 { | |
267 FuncDeclaration *fdv = ((Dsymbol *)cd->vtbl.data[vi])->isFuncDeclaration(); | |
268 | |
269 // BUG: should give error if argument types match, | |
270 // but return type does not? | |
271 | |
272 //printf("\tvtbl[%d] = '%s'\n", vi, fdv ? fdv->ident->toChars() : ""); | |
273 if (fdv && fdv->ident == ident) | |
274 { | |
275 int cov = type->covariant(fdv->type); | |
276 //printf("\tbaseclass cov = %d\n", cov); | |
277 if (cov == 2) | |
278 { | |
279 //type->print(); | |
280 //fdv->type->print(); | |
281 //printf("%s %s\n", type->deco, fdv->type->deco); | |
282 error("of type %s overrides but is not covariant with %s of type %s", | |
283 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
284 } | |
285 if (cov == 1) | |
286 { | |
287 if (fdv->isFinal()) | |
288 error("cannot override final function %s", fdv->toPrettyChars()); | |
289 if (fdv->toParent() == parent) | |
290 { | |
291 // If both are mixins, then error. | |
292 // If either is not, the one that is not overrides | |
293 // the other. | |
294 if (fdv->parent->isClassDeclaration()) | |
295 goto L1; | |
296 if (!this->parent->isClassDeclaration() | |
297 #if !BREAKABI | |
298 && !isDtorDeclaration() | |
299 #endif | |
300 ) | |
301 error("multiple overrides of same function"); | |
302 } | |
303 cd->vtbl.data[vi] = (void *)this; | |
304 vtblIndex = vi; | |
305 | |
306 /* This works by whenever this function is called, | |
307 * it actually returns tintro, which gets dynamically | |
308 * cast to type. But we know that tintro is a base | |
309 * of type, so we could optimize it by not doing a | |
310 * dynamic cast, but just subtracting the isBaseOf() | |
311 * offset if the value is != null. | |
312 */ | |
313 | |
314 if (fdv->tintro) | |
315 tintro = fdv->tintro; | |
316 else if (!type->equals(fdv->type)) | |
317 { | |
318 /* Only need to have a tintro if the vptr | |
319 * offsets differ | |
320 */ | |
321 int offset; | |
322 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
323 { | |
324 tintro = fdv->type; | |
325 } | |
326 } | |
327 goto L1; | |
328 } | |
329 if (cov == 3) | |
330 { | |
331 cd->sizeok = 2; // can't finish due to forward reference | |
332 return; | |
333 } | |
334 } | |
335 } | |
336 } | |
337 | |
338 // This is an 'introducing' function. | |
339 | |
340 // Verify this doesn't override previous final function | |
341 if (cd->baseClass) | |
342 { Dsymbol *s = cd->baseClass->search(loc, ident, 0); | |
343 if (s) | |
344 { | |
345 FuncDeclaration *f = s->isFuncDeclaration(); | |
346 f = f->overloadExactMatch(type); | |
347 if (f && f->isFinal() && f->prot() != PROTprivate) | |
348 error("cannot override final function %s", f->toPrettyChars()); | |
349 } | |
350 } | |
351 | |
352 if (isFinal()) | |
353 { | |
354 cd->vtblFinal.push(this); | |
355 } | |
356 else | |
357 { | |
358 // Append to end of vtbl[] | |
359 //printf("\tintroducing function\n"); | |
360 introducing = 1; | |
361 vi = cd->vtbl.dim; | |
362 cd->vtbl.push(this); | |
363 vtblIndex = vi; | |
364 } | |
365 | |
366 L1: ; | |
367 | |
368 /* Go through all the interface bases. | |
369 * If this function is covariant with any members of those interface | |
370 * functions, set the tintro. | |
371 */ | |
372 for (int i = 0; i < cd->interfaces_dim; i++) | |
373 { | |
374 BaseClass *b = cd->interfaces[i]; | |
375 for (vi = 0; vi < b->base->vtbl.dim; vi++) | |
376 { | |
377 Dsymbol *s = (Dsymbol *)b->base->vtbl.data[vi]; | |
378 //printf("interface %d vtbl[%d] %p %s\n", i, vi, s, s->toChars()); | |
379 FuncDeclaration *fdv = s->isFuncDeclaration(); | |
380 if (fdv && fdv->ident == ident) | |
381 { | |
382 int cov = type->covariant(fdv->type); | |
383 //printf("\tcov = %d\n", cov); | |
384 if (cov == 2) | |
385 { | |
386 //type->print(); | |
387 //fdv->type->print(); | |
388 //printf("%s %s\n", type->deco, fdv->type->deco); | |
389 error("of type %s overrides but is not covariant with %s of type %s", | |
390 type->toChars(), fdv->toPrettyChars(), fdv->type->toChars()); | |
391 } | |
392 if (cov == 1) | |
393 { Type *ti = NULL; | |
394 | |
395 if (fdv->tintro) | |
396 ti = fdv->tintro; | |
397 else if (!type->equals(fdv->type)) | |
398 { | |
399 /* Only need to have a tintro if the vptr | |
400 * offsets differ | |
401 */ | |
402 int offset; | |
403 if (fdv->type->nextOf()->isBaseOf(type->nextOf(), &offset)) | |
404 { | |
405 ti = fdv->type; | |
406 #if 0 | |
407 if (offset) | |
408 ti = fdv->type; | |
19 | 409 else if (type->nextOf()->ty == Tclass) |
410 { ClassDeclaration *cdn = ((TypeClass *)type->nextOf())->sym; | |
1 | 411 if (cdn && cdn->sizeok != 1) |
412 ti = fdv->type; | |
413 } | |
414 #endif | |
415 } | |
416 } | |
417 if (ti) | |
418 { | |
419 if (tintro && !tintro->equals(ti)) | |
420 { | |
421 error("incompatible covariant types %s and %s", tintro->toChars(), ti->toChars()); | |
422 } | |
423 tintro = ti; | |
424 } | |
425 goto L2; | |
426 } | |
427 if (cov == 3) | |
428 { | |
429 cd->sizeok = 2; // can't finish due to forward reference | |
430 return; | |
431 } | |
432 } | |
433 } | |
434 } | |
435 | |
436 if (introducing && isOverride()) | |
437 { | |
438 error("function %s does not override any", toChars()); | |
439 } | |
440 | |
441 L2: ; | |
442 } | |
443 else if (isOverride() && !parent->isTemplateInstance()) | |
444 error("override only applies to class member functions"); | |
445 | |
446 /* Do not allow template instances to add virtual functions | |
447 * to a class. | |
448 */ | |
449 if (isVirtual()) | |
450 { | |
451 TemplateInstance *ti = parent->isTemplateInstance(); | |
452 if (ti) | |
453 { | |
454 // Take care of nested templates | |
455 while (1) | |
456 { | |
457 TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance(); | |
458 if (!ti2) | |
459 break; | |
460 ti = ti2; | |
461 } | |
462 | |
463 // If it's a member template | |
464 ClassDeclaration *cd = ti->tempdecl->isClassMember(); | |
465 if (cd) | |
466 { | |
467 error("cannot use template to add virtual function to class '%s'", cd->toChars()); | |
468 } | |
469 } | |
470 } | |
471 | |
472 if (isMain()) | |
473 { | |
474 // Check parameters to see if they are either () or (char[][] args) | |
475 switch (nparams) | |
476 { | |
477 case 0: | |
478 break; | |
479 | |
480 case 1: | |
481 { | |
482 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
483 if (arg0->type->ty != Tarray || | |
19 | 484 arg0->type->nextOf()->ty != Tarray || |
485 arg0->type->nextOf()->nextOf()->ty != Tchar || | |
1 | 486 arg0->storageClass & (STCout | STCref | STClazy)) |
487 goto Lmainerr; | |
488 break; | |
489 } | |
490 | |
491 default: | |
492 goto Lmainerr; | |
493 } | |
494 | |
495 if (f->nextOf()->ty != Tint32 && f->nextOf()->ty != Tvoid) | |
496 error("must return int or void, not %s", f->nextOf()->toChars()); | |
497 if (f->varargs) | |
498 { | |
499 Lmainerr: | |
500 error("parameters must be main() or main(char[][] args)"); | |
501 } | |
502 } | |
503 | |
504 if (ident == Id::assign && (sd || cd)) | |
505 { // Disallow identity assignment operator. | |
506 | |
507 // opAssign(...) | |
508 if (nparams == 0) | |
509 { if (f->varargs == 1) | |
510 goto Lassignerr; | |
511 } | |
512 else | |
513 { | |
514 Argument *arg0 = Argument::getNth(f->parameters, 0); | |
515 Type *t0 = arg0->type->toBasetype(); | |
516 Type *tb = sd ? sd->type : cd->type; | |
517 if (arg0->type->implicitConvTo(tb) || | |
518 (sd && t0->ty == Tpointer && t0->nextOf()->implicitConvTo(tb)) | |
519 ) | |
520 { | |
521 if (nparams == 1) | |
522 goto Lassignerr; | |
523 Argument *arg1 = Argument::getNth(f->parameters, 1); | |
524 if (arg1->defaultArg) | |
525 goto Lassignerr; | |
526 } | |
527 } | |
528 } | |
529 | |
19 | 530 Ldone: |
1 | 531 /* Save scope for possible later use (if we need the |
532 * function internals) | |
533 */ | |
534 scope = new Scope(*sc); | |
535 scope->setNoFree(); | |
536 return; | |
537 | |
538 Lassignerr: | |
539 error("identity assignment operator overload is illegal"); | |
540 } | |
541 | |
542 void FuncDeclaration::semantic2(Scope *sc) | |
543 { | |
544 } | |
545 | |
546 // Do the semantic analysis on the internals of the function. | |
547 | |
548 void FuncDeclaration::semantic3(Scope *sc) | |
549 { TypeFunction *f; | |
550 AggregateDeclaration *ad; | |
551 VarDeclaration *argptr = NULL; | |
552 VarDeclaration *_arguments = NULL; | |
553 | |
554 if (!parent) | |
555 { | |
556 printf("FuncDeclaration::semantic3(%s '%s', sc = %p)\n", kind(), toChars(), sc); | |
557 assert(0); | |
558 } | |
559 //printf("FuncDeclaration::semantic3('%s.%s', sc = %p)\n", parent->toChars(), toChars(), sc); | |
560 //fflush(stdout); | |
561 //{ static int x; if (++x == 2) *(char*)0=0; } | |
562 //printf("\tlinkage = %d\n", sc->linkage); | |
563 | |
564 //printf(" sc->incontract = %d\n", sc->incontract); | |
565 if (semanticRun) | |
566 return; | |
567 semanticRun = 1; | |
568 | |
569 if (!type || type->ty != Tfunction) | |
570 return; | |
571 f = (TypeFunction *)(type); | |
572 size_t nparams = Argument::dim(f->parameters); | |
573 | |
574 // Check the 'throws' clause | |
575 if (fthrows) | |
576 { int i; | |
577 | |
578 for (i = 0; i < fthrows->dim; i++) | |
579 { | |
580 Type *t = (Type *)fthrows->data[i]; | |
581 | |
582 t = t->semantic(loc, sc); | |
583 if (!t->isClassHandle()) | |
584 error("can only throw classes, not %s", t->toChars()); | |
585 } | |
586 } | |
587 | |
588 if (fbody || frequire) | |
589 { | |
590 // Establish function scope | |
591 ScopeDsymbol *ss; | |
592 Scope *sc2; | |
593 | |
594 localsymtab = new DsymbolTable(); | |
595 | |
596 ss = new ScopeDsymbol(); | |
597 ss->parent = sc->scopesym; | |
598 sc2 = sc->push(ss); | |
599 sc2->func = this; | |
600 sc2->parent = this; | |
601 sc2->callSuper = 0; | |
602 sc2->sbreak = NULL; | |
603 sc2->scontinue = NULL; | |
604 sc2->sw = NULL; | |
605 sc2->fes = fes; | |
606 sc2->linkage = LINKd; | |
607 sc2->stc &= ~(STCauto | STCscope | STCstatic | STCabstract | STCdeprecated); | |
608 sc2->protection = PROTpublic; | |
609 sc2->explicitProtection = 0; | |
610 sc2->structalign = 8; | |
611 sc2->incontract = 0; | |
612 sc2->tf = NULL; | |
613 sc2->noctor = 0; | |
614 | |
615 // Declare 'this' | |
616 ad = isThis(); | |
617 if (ad) | |
618 { VarDeclaration *v; | |
619 | |
620 if (isFuncLiteralDeclaration() && isNested()) | |
621 { | |
622 error("literals cannot be class members"); | |
623 return; | |
624 } | |
625 else | |
626 { | |
627 assert(!isNested()); // can't be both member and nested | |
628 assert(ad->handle); | |
629 v = new ThisDeclaration(ad->handle); | |
630 v->storage_class |= STCparameter | STCin; | |
631 v->semantic(sc2); | |
632 if (!sc2->insert(v)) | |
633 assert(0); | |
634 v->parent = this; | |
635 vthis = v; | |
636 } | |
637 } | |
638 else if (isNested()) | |
639 { | |
640 VarDeclaration *v; | |
641 | |
642 v = new ThisDeclaration(Type::tvoid->pointerTo()); | |
643 v->storage_class |= STCparameter | STCin; | |
644 v->semantic(sc2); | |
645 if (!sc2->insert(v)) | |
646 assert(0); | |
647 v->parent = this; | |
648 vthis = v; | |
649 } | |
650 | |
651 // Declare hidden variable _arguments[] and _argptr | |
652 if (f->varargs == 1) | |
653 { Type *t; | |
654 | |
655 if (f->linkage == LINKd) | |
656 { // Declare _arguments[] | |
657 #if BREAKABI | |
658 v_arguments = new VarDeclaration(0, Type::typeinfotypelist->type, Id::_arguments_typeinfo, NULL); | |
659 v_arguments->storage_class = STCparameter | STCin; | |
660 v_arguments->semantic(sc2); | |
661 sc2->insert(v_arguments); | |
662 v_arguments->parent = this; | |
663 | |
664 t = Type::typeinfo->type->arrayOf(); | |
665 _arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
666 _arguments->semantic(sc2); | |
667 sc2->insert(_arguments); | |
668 _arguments->parent = this; | |
669 #else | |
670 t = Type::typeinfo->type->arrayOf(); | |
671 v_arguments = new VarDeclaration(0, t, Id::_arguments, NULL); | |
672 v_arguments->storage_class = STCparameter | STCin; | |
673 v_arguments->semantic(sc2); | |
674 sc2->insert(v_arguments); | |
675 v_arguments->parent = this; | |
676 #endif | |
677 } | |
678 if (f->linkage == LINKd || (parameters && parameters->dim)) | |
679 { // Declare _argptr | |
680 #if IN_GCC | |
681 t = d_gcc_builtin_va_list_d_type; | |
682 #else | |
683 t = Type::tvoid->pointerTo(); | |
684 #endif | |
685 argptr = new VarDeclaration(0, t, Id::_argptr, NULL); | |
686 argptr->semantic(sc2); | |
687 sc2->insert(argptr); | |
688 argptr->parent = this; | |
689 } | |
690 } | |
691 | |
692 // Propagate storage class from tuple arguments to their sub-arguments. | |
693 if (f->parameters) | |
694 { | |
695 for (size_t i = 0; i < f->parameters->dim; i++) | |
696 { Argument *arg = (Argument *)f->parameters->data[i]; | |
697 | |
698 if (arg->type->ty == Ttuple) | |
699 { TypeTuple *t = (TypeTuple *)arg->type; | |
700 size_t dim = Argument::dim(t->arguments); | |
701 for (size_t j = 0; j < dim; j++) | |
702 { Argument *narg = Argument::getNth(t->arguments, j); | |
703 narg->storageClass = arg->storageClass; | |
704 } | |
705 } | |
706 } | |
707 } | |
708 | |
709 // Declare all the function parameters as variables | |
710 if (nparams) | |
711 { // parameters[] has all the tuples removed, as the back end | |
712 // doesn't know about tuples | |
713 parameters = new Dsymbols(); | |
714 parameters->reserve(nparams); | |
715 for (size_t i = 0; i < nparams; i++) | |
716 { | |
717 Argument *arg = Argument::getNth(f->parameters, i); | |
718 Identifier *id = arg->ident; | |
719 if (!id) | |
720 { | |
721 //error("no identifier for parameter %d of %s", i + 1, toChars()); | |
722 OutBuffer buf; | |
723 buf.printf("_param_%zu", i); | |
724 char *name = (char *)buf.extractData(); | |
725 id = new Identifier(name, TOKidentifier); | |
726 arg->ident = id; | |
727 } | |
728 VarDeclaration *v = new VarDeclaration(0, arg->type, id, NULL); | |
729 //printf("declaring parameter %s of type %s\n", v->toChars(), v->type->toChars()); | |
730 v->storage_class |= STCparameter; | |
731 if (f->varargs == 2 && i + 1 == nparams) | |
732 v->storage_class |= STCvariadic; | |
733 v->storage_class |= arg->storageClass & (STCin | STCout | STCref | STClazy); | |
734 if (v->storage_class & STClazy) | |
735 v->storage_class |= STCin; | |
736 v->semantic(sc2); | |
737 if (!sc2->insert(v)) | |
738 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
739 else | |
740 parameters->push(v); | |
741 localsymtab->insert(v); | |
742 v->parent = this; | |
743 // for llvm d | |
744 arg->vardecl = v; | |
745 } | |
746 } | |
747 | |
748 // Declare the tuple symbols and put them in the symbol table, | |
749 // but not in parameters[]. | |
750 if (f->parameters) | |
751 { | |
752 for (size_t i = 0; i < f->parameters->dim; i++) | |
753 { Argument *arg = (Argument *)f->parameters->data[i]; | |
754 | |
755 if (!arg->ident) | |
756 continue; // never used, so ignore | |
757 if (arg->type->ty == Ttuple) | |
758 { TypeTuple *t = (TypeTuple *)arg->type; | |
759 size_t dim = Argument::dim(t->arguments); | |
760 Objects *exps = new Objects(); | |
761 exps->setDim(dim); | |
762 for (size_t j = 0; j < dim; j++) | |
763 { Argument *narg = Argument::getNth(t->arguments, j); | |
764 assert(narg->ident); | |
765 VarDeclaration *v = sc2->search(0, narg->ident, NULL)->isVarDeclaration(); | |
766 assert(v); | |
767 Expression *e = new VarExp(0, v); | |
768 exps->data[j] = (void *)e; | |
769 } | |
770 assert(arg->ident); | |
771 TupleDeclaration *v = new TupleDeclaration(0, arg->ident, exps); | |
772 //printf("declaring tuple %s\n", v->toChars()); | |
773 v->isexp = 1; | |
774 if (!sc2->insert(v)) | |
775 error("parameter %s.%s is already defined", toChars(), v->toChars()); | |
776 localsymtab->insert(v); | |
777 v->parent = this; | |
778 } | |
779 } | |
780 } | |
781 | |
782 sc2->incontract++; | |
783 | |
784 if (frequire) | |
785 { | |
786 // BUG: need to error if accessing out parameters | |
787 // BUG: need to treat parameters as const | |
788 // BUG: need to disallow returns and throws | |
789 // BUG: verify that all in and ref parameters are read | |
790 frequire = frequire->semantic(sc2); | |
791 labtab = NULL; // so body can't refer to labels | |
792 } | |
793 | |
794 if (fensure || addPostInvariant()) | |
795 { | |
796 ScopeDsymbol *sym; | |
797 | |
798 sym = new ScopeDsymbol(); | |
799 sym->parent = sc2->scopesym; | |
800 sc2 = sc2->push(sym); | |
801 | |
802 assert(type->nextOf()); | |
803 if (type->nextOf()->ty == Tvoid) | |
804 { | |
805 if (outId) | |
806 error("void functions have no result"); | |
807 } | |
808 else | |
809 { | |
810 if (!outId) | |
811 outId = Id::result; // provide a default | |
812 } | |
813 | |
814 if (outId) | |
815 { // Declare result variable | |
816 VarDeclaration *v; | |
817 Loc loc = this->loc; | |
818 | |
819 if (fensure) | |
820 loc = fensure->loc; | |
821 | |
822 v = new VarDeclaration(loc, type->nextOf(), outId, NULL); | |
823 v->noauto = 1; | |
824 sc2->incontract--; | |
825 v->semantic(sc2); | |
826 sc2->incontract++; | |
827 if (!sc2->insert(v)) | |
828 error("out result %s is already defined", v->toChars()); | |
829 v->parent = this; | |
830 vresult = v; | |
831 | |
832 // vresult gets initialized with the function return value | |
833 // in ReturnStatement::semantic() | |
834 } | |
835 | |
836 // BUG: need to treat parameters as const | |
837 // BUG: need to disallow returns and throws | |
838 if (fensure) | |
839 { fensure = fensure->semantic(sc2); | |
840 labtab = NULL; // so body can't refer to labels | |
841 } | |
842 | |
843 if (!global.params.useOut) | |
844 { fensure = NULL; // discard | |
845 vresult = NULL; | |
846 } | |
847 | |
848 // Postcondition invariant | |
849 if (addPostInvariant()) | |
850 { | |
851 Expression *e = NULL; | |
852 if (isCtorDeclaration()) | |
853 { | |
854 // Call invariant directly only if it exists | |
855 InvariantDeclaration *inv = ad->inv; | |
856 ClassDeclaration *cd = ad->isClassDeclaration(); | |
857 | |
858 while (!inv && cd) | |
859 { | |
860 cd = cd->baseClass; | |
861 if (!cd) | |
862 break; | |
863 inv = cd->inv; | |
864 } | |
865 if (inv) | |
866 { | |
867 e = new DsymbolExp(0, inv); | |
868 e = new CallExp(0, e); | |
869 e = e->semantic(sc2); | |
870 } | |
871 } | |
872 else | |
873 { // Call invariant virtually | |
874 ThisExp *v = new ThisExp(0); | |
875 v->type = vthis->type; | |
876 e = new AssertExp(0, v); | |
877 } | |
878 if (e) | |
879 { | |
880 ExpStatement *s = new ExpStatement(0, e); | |
881 if (fensure) | |
882 fensure = new CompoundStatement(0, s, fensure); | |
883 else | |
884 fensure = s; | |
885 } | |
886 } | |
887 | |
888 if (fensure) | |
889 { returnLabel = new LabelDsymbol(Id::returnLabel); | |
890 LabelStatement *ls = new LabelStatement(0, Id::returnLabel, fensure); | |
891 ls->isReturnLabel = 1; | |
892 returnLabel->statement = ls; | |
893 } | |
894 sc2 = sc2->pop(); | |
895 } | |
896 | |
897 sc2->incontract--; | |
898 | |
899 if (fbody) | |
900 { ClassDeclaration *cd = isClassMember(); | |
901 | |
902 if (isCtorDeclaration() && cd) | |
903 { | |
904 for (int i = 0; i < cd->fields.dim; i++) | |
905 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
906 | |
907 v->ctorinit = 0; | |
908 } | |
909 } | |
910 | |
911 if (inferRetType || f->retStyle() != RETstack) | |
912 nrvo_can = 0; | |
913 | |
914 fbody = fbody->semantic(sc2); | |
915 | |
916 if (inferRetType) | |
917 { // If no return type inferred yet, then infer a void | |
918 if (!type->nextOf()) | |
919 { | |
920 type->next = Type::tvoid; | |
921 type = type->semantic(loc, sc); | |
922 } | |
923 f = (TypeFunction *)type; | |
924 } | |
925 | |
926 int offend = fbody ? fbody->fallOffEnd() : TRUE; | |
927 | |
928 if (isStaticCtorDeclaration()) | |
929 { /* It's a static constructor. Ensure that all | |
930 * ctor consts were initialized. | |
931 */ | |
932 | |
35
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933 Dsymbol *p = toParent(); |
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934 ScopeDsymbol *ad = p->isScopeDsymbol(); |
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935 if (!ad) |
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|
936 { |
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937 error("static constructor can only be member of struct/class/module, not %s %s", p->kind(), p->toChars()); |
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|
938 } |
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|
939 else |
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940 { |
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941 for (int i = 0; i < ad->members->dim; i++) |
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942 { Dsymbol *s = (Dsymbol *)ad->members->data[i]; |
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943 |
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944 s->checkCtorConstInit(); |
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945 } |
1 | 946 } |
947 } | |
948 | |
949 if (isCtorDeclaration() && cd) | |
950 { | |
951 //printf("callSuper = x%x\n", sc2->callSuper); | |
952 | |
953 // Verify that all the ctorinit fields got initialized | |
954 if (!(sc2->callSuper & CSXthis_ctor)) | |
955 { | |
956 for (int i = 0; i < cd->fields.dim; i++) | |
957 { VarDeclaration *v = (VarDeclaration *)cd->fields.data[i]; | |
958 | |
959 if (v->ctorinit == 0 && v->isCtorinit()) | |
960 error("missing initializer for const field %s", v->toChars()); | |
961 } | |
962 } | |
963 | |
964 if (!(sc2->callSuper & CSXany_ctor) && | |
965 cd->baseClass && cd->baseClass->ctor) | |
966 { | |
967 sc2->callSuper = 0; | |
968 | |
969 // Insert implicit super() at start of fbody | |
970 Expression *e1 = new SuperExp(0); | |
971 Expression *e = new CallExp(0, e1); | |
972 | |
973 unsigned errors = global.errors; | |
974 global.gag++; | |
975 e = e->semantic(sc2); | |
976 global.gag--; | |
977 if (errors != global.errors) | |
978 error("no match for implicit super() call in constructor"); | |
979 | |
980 Statement *s = new ExpStatement(0, e); | |
981 fbody = new CompoundStatement(0, s, fbody); | |
982 } | |
983 } | |
984 else if (fes) | |
985 { // For foreach(){} body, append a return 0; | |
986 Expression *e = new IntegerExp(0); | |
987 Statement *s = new ReturnStatement(0, e); | |
988 fbody = new CompoundStatement(0, fbody, s); | |
989 assert(!returnLabel); | |
990 } | |
991 else if (!hasReturnExp && type->nextOf()->ty != Tvoid) | |
992 error("expected to return a value of type %s", type->nextOf()->toChars()); | |
993 else if (!inlineAsm) | |
994 { | |
995 if (type->nextOf()->ty == Tvoid) | |
996 { | |
997 if (offend && isMain()) | |
998 { // Add a return 0; statement | |
999 Statement *s = new ReturnStatement(0, new IntegerExp(0)); | |
1000 fbody = new CompoundStatement(0, fbody, s); | |
1001 } | |
1002 } | |
1003 else | |
1004 { | |
1005 if (offend) | |
1006 { Expression *e; | |
1007 | |
1008 if (global.params.warnings) | |
1009 { fprintf(stdmsg, "warning - "); | |
1010 error("no return at end of function"); | |
1011 } | |
1012 | |
1013 if (global.params.useAssert && | |
1014 !global.params.useInline) | |
1015 { /* Add an assert(0, msg); where the missing return | |
1016 * should be. | |
1017 */ | |
1018 e = new AssertExp( | |
1019 endloc, | |
1020 new IntegerExp(0), | |
1021 new StringExp(loc, "missing return expression") | |
1022 ); | |
1023 } | |
1024 else | |
1025 e = new HaltExp(endloc); | |
1026 e = new CommaExp(0, e, type->nextOf()->defaultInit()); | |
1027 e = e->semantic(sc2); | |
1028 Statement *s = new ExpStatement(0, e); | |
1029 fbody = new CompoundStatement(0, fbody, s); | |
1030 } | |
1031 } | |
1032 } | |
1033 } | |
1034 | |
1035 { | |
1036 Statements *a = new Statements(); | |
1037 | |
1038 // Merge in initialization of 'out' parameters | |
1039 if (parameters) | |
1040 { for (size_t i = 0; i < parameters->dim; i++) | |
1041 { VarDeclaration *v; | |
1042 | |
1043 v = (VarDeclaration *)parameters->data[i]; | |
1044 if (v->storage_class & STCout) | |
1045 { | |
1046 assert(v->init); | |
1047 ExpInitializer *ie = v->init->isExpInitializer(); | |
1048 assert(ie); | |
1049 a->push(new ExpStatement(0, ie->exp)); | |
1050 } | |
1051 } | |
1052 } | |
1053 | |
1054 if (argptr) | |
1055 { // Initialize _argptr to point past non-variadic arg | |
1056 #if IN_GCC | |
1057 // Handled in FuncDeclaration::toObjFile | |
1058 v_argptr = argptr; | |
1059 v_argptr->init = new VoidInitializer(loc); | |
1060 #else | |
1061 Expression *e1; | |
1062 Expression *e; | |
1063 Type *t = argptr->type; | |
1064 VarDeclaration *p; | |
1065 unsigned offset; | |
1066 | |
1067 e1 = new VarExp(0, argptr); | |
1068 if (parameters && parameters->dim) | |
1069 p = (VarDeclaration *)parameters->data[parameters->dim - 1]; | |
1070 else | |
1071 p = v_arguments; // last parameter is _arguments[] | |
1072 offset = p->type->size(); | |
1073 offset = (offset + 3) & ~3; // assume stack aligns on 4 | |
1074 e = new SymOffExp(0, p, offset); | |
1075 e = new AssignExp(0, e1, e); | |
1076 e->type = t; | |
1077 a->push(new ExpStatement(0, e)); | |
1078 #endif | |
1079 } | |
1080 | |
1081 if (_arguments) | |
1082 { | |
1083 /* Advance to elements[] member of TypeInfo_Tuple with: | |
1084 * _arguments = v_arguments.elements; | |
1085 */ | |
1086 Expression *e = new VarExp(0, v_arguments); | |
1087 e = new DotIdExp(0, e, Id::elements); | |
1088 Expression *e1 = new VarExp(0, _arguments); | |
1089 e = new AssignExp(0, e1, e); | |
1090 e = e->semantic(sc); | |
1091 a->push(new ExpStatement(0, e)); | |
1092 } | |
1093 | |
1094 // Merge contracts together with body into one compound statement | |
1095 | |
1096 #ifdef _DH | |
1097 if (frequire && global.params.useIn) | |
1098 { frequire->incontract = 1; | |
1099 a->push(frequire); | |
1100 } | |
1101 #else | |
1102 if (frequire && global.params.useIn) | |
1103 a->push(frequire); | |
1104 #endif | |
1105 | |
1106 // Precondition invariant | |
1107 if (addPreInvariant()) | |
1108 { | |
1109 Expression *e = NULL; | |
1110 if (isDtorDeclaration()) | |
1111 { | |
1112 // Call invariant directly only if it exists | |
1113 InvariantDeclaration *inv = ad->inv; | |
1114 ClassDeclaration *cd = ad->isClassDeclaration(); | |
1115 | |
1116 while (!inv && cd) | |
1117 { | |
1118 cd = cd->baseClass; | |
1119 if (!cd) | |
1120 break; | |
1121 inv = cd->inv; | |
1122 } | |
1123 if (inv) | |
1124 { | |
1125 e = new DsymbolExp(0, inv); | |
1126 e = new CallExp(0, e); | |
1127 e = e->semantic(sc2); | |
1128 } | |
1129 } | |
1130 else | |
1131 { // Call invariant virtually | |
1132 ThisExp *v = new ThisExp(0); | |
1133 v->type = vthis->type; | |
1134 Expression *se = new StringExp(0, "null this"); | |
1135 se = se->semantic(sc); | |
1136 se->type = Type::tchar->arrayOf(); | |
1137 e = new AssertExp(loc, v, se); | |
1138 } | |
1139 if (e) | |
1140 { | |
1141 ExpStatement *s = new ExpStatement(0, e); | |
1142 a->push(s); | |
1143 } | |
1144 } | |
1145 | |
1146 if (fbody) | |
1147 a->push(fbody); | |
1148 | |
1149 if (fensure) | |
1150 { | |
1151 a->push(returnLabel->statement); | |
1152 | |
1153 if (type->nextOf()->ty != Tvoid) | |
1154 { | |
1155 // Create: return vresult; | |
1156 assert(vresult); | |
1157 Expression *e = new VarExp(0, vresult); | |
1158 if (tintro) | |
1159 { e = e->implicitCastTo(sc, tintro->nextOf()); | |
1160 e = e->semantic(sc); | |
1161 } | |
1162 ReturnStatement *s = new ReturnStatement(0, e); | |
1163 a->push(s); | |
1164 } | |
1165 } | |
1166 | |
1167 fbody = new CompoundStatement(0, a); | |
1168 } | |
1169 | |
1170 sc2->callSuper = 0; | |
1171 sc2->pop(); | |
1172 } | |
1173 semanticRun = 2; | |
1174 } | |
1175 | |
1176 void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1177 { | |
1178 //printf("FuncDeclaration::toCBuffer() '%s'\n", toChars()); | |
1179 | |
1180 type->toCBuffer(buf, ident, hgs); | |
1181 bodyToCBuffer(buf, hgs); | |
1182 } | |
1183 | |
1184 | |
1185 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1186 { | |
1187 if (fbody && | |
1188 (!hgs->hdrgen || hgs->tpltMember || canInline(1,1)) | |
1189 ) | |
1190 { buf->writenl(); | |
1191 | |
1192 // in{} | |
1193 if (frequire) | |
1194 { buf->writestring("in"); | |
1195 buf->writenl(); | |
1196 frequire->toCBuffer(buf, hgs); | |
1197 } | |
1198 | |
1199 // out{} | |
1200 if (fensure) | |
1201 { buf->writestring("out"); | |
1202 if (outId) | |
1203 { buf->writebyte('('); | |
1204 buf->writestring(outId->toChars()); | |
1205 buf->writebyte(')'); | |
1206 } | |
1207 buf->writenl(); | |
1208 fensure->toCBuffer(buf, hgs); | |
1209 } | |
1210 | |
1211 if (frequire || fensure) | |
1212 { buf->writestring("body"); | |
1213 buf->writenl(); | |
1214 } | |
1215 | |
1216 buf->writebyte('{'); | |
1217 buf->writenl(); | |
1218 fbody->toCBuffer(buf, hgs); | |
1219 buf->writebyte('}'); | |
1220 buf->writenl(); | |
1221 } | |
1222 else | |
1223 { buf->writeByte(';'); | |
1224 buf->writenl(); | |
1225 } | |
1226 } | |
1227 | |
1228 /**************************************************** | |
1229 * Determine if 'this' overrides fd. | |
1230 * Return !=0 if it does. | |
1231 */ | |
1232 | |
1233 int FuncDeclaration::overrides(FuncDeclaration *fd) | |
1234 { int result = 0; | |
1235 | |
1236 if (fd->ident == ident) | |
1237 { | |
1238 int cov = type->covariant(fd->type); | |
1239 if (cov) | |
1240 { ClassDeclaration *cd1 = toParent()->isClassDeclaration(); | |
1241 ClassDeclaration *cd2 = fd->toParent()->isClassDeclaration(); | |
1242 | |
1243 if (cd1 && cd2 && cd2->isBaseOf(cd1, NULL)) | |
1244 result = 1; | |
1245 } | |
1246 } | |
1247 return result; | |
1248 } | |
1249 | |
1250 /**************************************************** | |
1251 * Overload this FuncDeclaration with the new one f. | |
1252 * Return !=0 if successful; i.e. no conflict. | |
1253 */ | |
1254 | |
1255 int FuncDeclaration::overloadInsert(Dsymbol *s) | |
1256 { | |
1257 FuncDeclaration *f; | |
1258 AliasDeclaration *a; | |
1259 | |
1260 //printf("FuncDeclaration::overloadInsert(%s)\n", s->toChars()); | |
1261 a = s->isAliasDeclaration(); | |
1262 if (a) | |
1263 { | |
1264 if (overnext) | |
1265 return overnext->overloadInsert(a); | |
1266 if (!a->aliassym && a->type->ty != Tident && a->type->ty != Tinstance) | |
1267 { | |
1268 //printf("\ta = '%s'\n", a->type->toChars()); | |
1269 return FALSE; | |
1270 } | |
1271 overnext = a; | |
1272 //printf("\ttrue: no conflict\n"); | |
1273 return TRUE; | |
1274 } | |
1275 f = s->isFuncDeclaration(); | |
1276 if (!f) | |
1277 return FALSE; | |
1278 | |
1279 if (type && f->type && // can be NULL for overloaded constructors | |
1280 f->type->covariant(type) && | |
1281 !isFuncAliasDeclaration()) | |
1282 { | |
1283 //printf("\tfalse: conflict %s\n", kind()); | |
1284 return FALSE; | |
1285 } | |
1286 | |
1287 if (overnext) | |
1288 return overnext->overloadInsert(f); | |
1289 overnext = f; | |
1290 //printf("\ttrue: no conflict\n"); | |
1291 return TRUE; | |
1292 } | |
1293 | |
1294 /******************************************** | |
1295 * Find function in overload list that exactly matches t. | |
1296 */ | |
1297 | |
1298 /*************************************************** | |
1299 * Visit each overloaded function in turn, and call | |
1300 * (*fp)(param, f) on it. | |
1301 * Exit when no more, or (*fp)(param, f) returns 1. | |
1302 * Returns: | |
1303 * 0 continue | |
1304 * 1 done | |
1305 */ | |
1306 | |
1307 int overloadApply(FuncDeclaration *fstart, | |
1308 int (*fp)(void *, FuncDeclaration *), | |
1309 void *param) | |
1310 { | |
1311 FuncDeclaration *f; | |
1312 Declaration *d; | |
1313 Declaration *next; | |
1314 | |
1315 for (d = fstart; d; d = next) | |
1316 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
1317 | |
1318 if (fa) | |
1319 { | |
1320 if (overloadApply(fa->funcalias, fp, param)) | |
1321 return 1; | |
1322 next = fa->overnext; | |
1323 } | |
1324 else | |
1325 { | |
1326 AliasDeclaration *a = d->isAliasDeclaration(); | |
1327 | |
1328 if (a) | |
1329 { | |
1330 Dsymbol *s = a->toAlias(); | |
1331 next = s->isDeclaration(); | |
1332 if (next == a) | |
1333 break; | |
1334 if (next == fstart) | |
1335 break; | |
1336 } | |
1337 else | |
1338 { | |
1339 f = d->isFuncDeclaration(); | |
1340 if (!f) | |
1341 { d->error("is aliased to a function"); | |
1342 break; // BUG: should print error message? | |
1343 } | |
1344 if ((*fp)(param, f)) | |
1345 return 1; | |
1346 | |
1347 next = f->overnext; | |
1348 } | |
1349 } | |
1350 } | |
1351 return 0; | |
1352 } | |
1353 | |
1354 /******************************************** | |
1355 * Find function in overload list that exactly matches t. | |
1356 */ | |
1357 | |
1358 struct Param1 | |
1359 { | |
1360 Type *t; // type to match | |
1361 FuncDeclaration *f; // return value | |
1362 }; | |
1363 | |
1364 int fp1(void *param, FuncDeclaration *f) | |
1365 { Param1 *p = (Param1 *)param; | |
1366 Type *t = p->t; | |
1367 | |
1368 if (t->equals(f->type)) | |
1369 { p->f = f; | |
1370 return 1; | |
1371 } | |
1372 | |
1373 #if V2 | |
1374 /* Allow covariant matches, if it's just a const conversion | |
1375 * of the return type | |
1376 */ | |
1377 if (t->ty == Tfunction) | |
1378 { TypeFunction *tf = (TypeFunction *)f->type; | |
1379 if (tf->covariant(t) == 1 && | |
1380 tf->nextOf()->implicitConvTo(t->nextOf()) >= MATCHconst) | |
1381 { | |
1382 p->f = f; | |
1383 return 1; | |
1384 } | |
1385 } | |
1386 #endif | |
1387 return 0; | |
1388 } | |
1389 | |
1390 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
1391 { | |
1392 Param1 p; | |
1393 p.t = t; | |
1394 p.f = NULL; | |
1395 overloadApply(this, &fp1, &p); | |
1396 return p.f; | |
1397 } | |
1398 | |
1399 #if 0 | |
1400 FuncDeclaration *FuncDeclaration::overloadExactMatch(Type *t) | |
1401 { | |
1402 FuncDeclaration *f; | |
1403 Declaration *d; | |
1404 Declaration *next; | |
1405 | |
1406 for (d = this; d; d = next) | |
1407 { FuncAliasDeclaration *fa = d->isFuncAliasDeclaration(); | |
1408 | |
1409 if (fa) | |
1410 { | |
1411 FuncDeclaration *f2 = fa->funcalias->overloadExactMatch(t); | |
1412 if (f2) | |
1413 return f2; | |
1414 next = fa->overnext; | |
1415 } | |
1416 else | |
1417 { | |
1418 AliasDeclaration *a = d->isAliasDeclaration(); | |
1419 | |
1420 if (a) | |
1421 { | |
1422 Dsymbol *s = a->toAlias(); | |
1423 next = s->isDeclaration(); | |
1424 if (next == a) | |
1425 break; | |
1426 } | |
1427 else | |
1428 { | |
1429 f = d->isFuncDeclaration(); | |
1430 if (!f) | |
1431 break; // BUG: should print error message? | |
1432 if (t->equals(d->type)) | |
1433 return f; | |
1434 next = f->overnext; | |
1435 } | |
1436 } | |
1437 } | |
1438 return NULL; | |
1439 } | |
1440 #endif | |
1441 | |
1442 /******************************************** | |
1443 * Decide which function matches the arguments best. | |
1444 */ | |
1445 | |
1446 struct Param2 | |
1447 { | |
1448 Match *m; | |
1449 Expressions *arguments; | |
1450 }; | |
1451 | |
1452 int fp2(void *param, FuncDeclaration *f) | |
1453 { Param2 *p = (Param2 *)param; | |
1454 Match *m = p->m; | |
1455 Expressions *arguments = p->arguments; | |
1456 MATCH match; | |
1457 | |
1458 if (f != m->lastf) // skip duplicates | |
1459 { | |
1460 TypeFunction *tf; | |
1461 | |
1462 m->anyf = f; | |
1463 tf = (TypeFunction *)f->type; | |
1464 match = (MATCH) tf->callMatch(arguments); | |
1465 //printf("match = %d\n", match); | |
1466 if (match != MATCHnomatch) | |
1467 { | |
1468 if (match > m->last) | |
1469 goto LfIsBetter; | |
1470 | |
1471 if (match < m->last) | |
1472 goto LlastIsBetter; | |
1473 | |
1474 /* See if one of the matches overrides the other. | |
1475 */ | |
1476 if (m->lastf->overrides(f)) | |
1477 goto LlastIsBetter; | |
1478 else if (f->overrides(m->lastf)) | |
1479 goto LfIsBetter; | |
1480 | |
1481 Lambiguous: | |
1482 m->nextf = f; | |
1483 m->count++; | |
1484 return 0; | |
1485 | |
1486 LfIsBetter: | |
1487 m->last = match; | |
1488 m->lastf = f; | |
1489 m->count = 1; | |
1490 return 0; | |
1491 | |
1492 LlastIsBetter: | |
1493 return 0; | |
1494 } | |
1495 } | |
1496 return 0; | |
1497 } | |
1498 | |
1499 | |
1500 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
1501 { | |
1502 Param2 p; | |
1503 p.m = m; | |
1504 p.arguments = arguments; | |
1505 overloadApply(fstart, &fp2, &p); | |
1506 } | |
1507 | |
1508 #if 0 | |
1509 // Recursive helper function | |
1510 | |
1511 void overloadResolveX(Match *m, FuncDeclaration *fstart, Expressions *arguments) | |
1512 { | |
1513 MATCH match; | |
1514 Declaration *d; | |
1515 Declaration *next; | |
1516 | |
1517 for (d = fstart; d; d = next) | |
1518 { | |
1519 FuncDeclaration *f; | |
1520 FuncAliasDeclaration *fa; | |
1521 AliasDeclaration *a; | |
1522 | |
1523 fa = d->isFuncAliasDeclaration(); | |
1524 if (fa) | |
1525 { | |
1526 overloadResolveX(m, fa->funcalias, arguments); | |
1527 next = fa->overnext; | |
1528 } | |
1529 else if ((f = d->isFuncDeclaration()) != NULL) | |
1530 { | |
1531 next = f->overnext; | |
1532 if (f == m->lastf) | |
1533 continue; // skip duplicates | |
1534 else | |
1535 { | |
1536 TypeFunction *tf; | |
1537 | |
1538 m->anyf = f; | |
1539 tf = (TypeFunction *)f->type; | |
1540 match = (MATCH) tf->callMatch(arguments); | |
1541 //printf("match = %d\n", match); | |
1542 if (match != MATCHnomatch) | |
1543 { | |
1544 if (match > m->last) | |
1545 goto LfIsBetter; | |
1546 | |
1547 if (match < m->last) | |
1548 goto LlastIsBetter; | |
1549 | |
1550 /* See if one of the matches overrides the other. | |
1551 */ | |
1552 if (m->lastf->overrides(f)) | |
1553 goto LlastIsBetter; | |
1554 else if (f->overrides(m->lastf)) | |
1555 goto LfIsBetter; | |
1556 | |
1557 Lambiguous: | |
1558 m->nextf = f; | |
1559 m->count++; | |
1560 continue; | |
1561 | |
1562 LfIsBetter: | |
1563 m->last = match; | |
1564 m->lastf = f; | |
1565 m->count = 1; | |
1566 continue; | |
1567 | |
1568 LlastIsBetter: | |
1569 continue; | |
1570 } | |
1571 } | |
1572 } | |
1573 else if ((a = d->isAliasDeclaration()) != NULL) | |
1574 { | |
1575 Dsymbol *s = a->toAlias(); | |
1576 next = s->isDeclaration(); | |
1577 if (next == a) | |
1578 break; | |
1579 if (next == fstart) | |
1580 break; | |
1581 } | |
1582 else | |
1583 { d->error("is aliased to a function"); | |
1584 break; | |
1585 } | |
1586 } | |
1587 } | |
1588 #endif | |
1589 | |
1590 FuncDeclaration *FuncDeclaration::overloadResolve(Loc loc, Expressions *arguments) | |
1591 { | |
1592 TypeFunction *tf; | |
1593 Match m; | |
1594 | |
1595 #if 0 | |
1596 printf("FuncDeclaration::overloadResolve('%s')\n", toChars()); | |
1597 if (arguments) | |
1598 { int i; | |
1599 | |
1600 for (i = 0; i < arguments->dim; i++) | |
1601 { Expression *arg; | |
1602 | |
1603 arg = (Expression *)arguments->data[i]; | |
1604 assert(arg->type); | |
1605 printf("\t%s: ", arg->toChars()); | |
1606 arg->type->print(); | |
1607 } | |
1608 } | |
1609 #endif | |
1610 | |
1611 memset(&m, 0, sizeof(m)); | |
1612 m.last = MATCHnomatch; | |
1613 overloadResolveX(&m, this, arguments); | |
1614 | |
1615 if (m.count == 1) // exactly one match | |
1616 { | |
1617 return m.lastf; | |
1618 } | |
1619 else | |
1620 { | |
1621 OutBuffer buf; | |
1622 | |
1623 if (arguments) | |
1624 { | |
1625 HdrGenState hgs; | |
1626 | |
1627 argExpTypesToCBuffer(&buf, arguments, &hgs); | |
1628 } | |
1629 | |
1630 if (m.last == MATCHnomatch) | |
1631 { | |
1632 tf = (TypeFunction *)type; | |
1633 | |
1634 //printf("tf = %s, args = %s\n", tf->deco, ((Expression *)arguments->data[0])->type->deco); | |
1635 error(loc, "%s does not match parameter types (%s)", | |
1636 Argument::argsTypesToChars(tf->parameters, tf->varargs), | |
1637 buf.toChars()); | |
1638 return m.anyf; // as long as it's not a FuncAliasDeclaration | |
1639 } | |
1640 else | |
1641 { | |
1642 #if 1 | |
1643 TypeFunction *t1 = (TypeFunction *)m.lastf->type; | |
1644 TypeFunction *t2 = (TypeFunction *)m.nextf->type; | |
1645 | |
1646 error(loc, "called with argument types:\n\t(%s)\nmatches both:\n\t%s%s\nand:\n\t%s%s", | |
1647 buf.toChars(), | |
1648 m.lastf->toPrettyChars(), Argument::argsTypesToChars(t1->parameters, t1->varargs), | |
1649 m.nextf->toPrettyChars(), Argument::argsTypesToChars(t2->parameters, t2->varargs)); | |
1650 #else | |
1651 error(loc, "overloads %s and %s both match argument list for %s", | |
1652 m.lastf->type->toChars(), | |
1653 m.nextf->type->toChars(), | |
1654 m.lastf->toChars()); | |
1655 #endif | |
1656 return m.lastf; | |
1657 } | |
1658 } | |
1659 } | |
1660 | |
1661 /******************************** | |
1662 * Labels are in a separate scope, one per function. | |
1663 */ | |
1664 | |
1665 LabelDsymbol *FuncDeclaration::searchLabel(Identifier *ident) | |
1666 { Dsymbol *s; | |
1667 | |
1668 if (!labtab) | |
1669 labtab = new DsymbolTable(); // guess we need one | |
1670 | |
1671 s = labtab->lookup(ident); | |
1672 if (!s) | |
1673 { | |
1674 s = new LabelDsymbol(ident); | |
1675 labtab->insert(s); | |
1676 } | |
1677 return (LabelDsymbol *)s; | |
1678 } | |
1679 | |
1680 AggregateDeclaration *FuncDeclaration::isThis() | |
1681 { AggregateDeclaration *ad; | |
1682 | |
1683 //printf("+FuncDeclaration::isThis() '%s'\n", toChars()); | |
1684 ad = NULL; | |
1685 if ((storage_class & STCstatic) == 0) | |
1686 { | |
1687 ad = isMember2(); | |
1688 } | |
1689 //printf("-FuncDeclaration::isThis() %p\n", ad); | |
1690 return ad; | |
1691 } | |
1692 | |
1693 AggregateDeclaration *FuncDeclaration::isMember2() | |
1694 { AggregateDeclaration *ad; | |
1695 | |
1696 //printf("+FuncDeclaration::isMember2() '%s'\n", toChars()); | |
1697 ad = NULL; | |
1698 for (Dsymbol *s = this; s; s = s->parent) | |
1699 { | |
1700 //printf("\ts = '%s', parent = '%s', kind = %s\n", s->toChars(), s->parent->toChars(), s->parent->kind()); | |
1701 ad = s->isMember(); | |
1702 if (ad) | |
1703 { //printf("test4\n"); | |
1704 break; | |
1705 } | |
1706 if (!s->parent || | |
1707 (!s->parent->isTemplateInstance())) | |
1708 { //printf("test5\n"); | |
1709 break; | |
1710 } | |
1711 } | |
1712 //printf("-FuncDeclaration::isMember2() %p\n", ad); | |
1713 return ad; | |
1714 } | |
1715 | |
1716 /***************************************** | |
1717 * Determine lexical level difference from 'this' to nested function 'fd'. | |
1718 * Error if this cannot call fd. | |
1719 * Returns: | |
1720 * 0 same level | |
1721 * -1 increase nesting by 1 (fd is nested within 'this') | |
1722 * >0 decrease nesting by number | |
1723 */ | |
1724 | |
1725 int FuncDeclaration::getLevel(Loc loc, FuncDeclaration *fd) | |
1726 { int level; | |
1727 Dsymbol *s; | |
1728 Dsymbol *fdparent; | |
1729 | |
1730 //printf("FuncDeclaration::getLevel(fd = '%s')\n", fd->toChars()); | |
1731 fdparent = fd->toParent2(); | |
1732 if (fdparent == this) | |
1733 return -1; | |
1734 s = this; | |
1735 level = 0; | |
1736 while (fd != s && fdparent != s->toParent2()) | |
1737 { | |
1738 //printf("\ts = '%s'\n", s->toChars()); | |
1739 FuncDeclaration *thisfd = s->isFuncDeclaration(); | |
1740 if (thisfd) | |
1741 { if (!thisfd->isNested() && !thisfd->vthis) | |
1742 goto Lerr; | |
1743 } | |
1744 else | |
1745 { | |
1746 ClassDeclaration *thiscd = s->isClassDeclaration(); | |
1747 if (thiscd) | |
1748 { if (!thiscd->isNested()) | |
1749 goto Lerr; | |
1750 } | |
1751 else | |
1752 goto Lerr; | |
1753 } | |
1754 | |
1755 s = s->toParent2(); | |
1756 assert(s); | |
1757 level++; | |
1758 } | |
1759 return level; | |
1760 | |
1761 Lerr: | |
1762 error(loc, "cannot access frame of function %s", fd->toChars()); | |
1763 return 1; | |
1764 } | |
1765 | |
1766 void FuncDeclaration::appendExp(Expression *e) | |
1767 { Statement *s; | |
1768 | |
1769 s = new ExpStatement(0, e); | |
1770 appendState(s); | |
1771 } | |
1772 | |
1773 void FuncDeclaration::appendState(Statement *s) | |
1774 { CompoundStatement *cs; | |
1775 | |
1776 if (!fbody) | |
1777 { Statements *a; | |
1778 | |
1779 a = new Statements(); | |
1780 fbody = new CompoundStatement(0, a); | |
1781 } | |
1782 cs = fbody->isCompoundStatement(); | |
1783 cs->statements->push(s); | |
1784 } | |
1785 | |
1786 | |
1787 int FuncDeclaration::isMain() | |
1788 { | |
1789 return ident == Id::main && | |
1790 linkage != LINKc && !isMember() && !isNested(); | |
1791 } | |
1792 | |
1793 int FuncDeclaration::isWinMain() | |
1794 { | |
1795 return ident == Id::WinMain && | |
1796 linkage != LINKc && !isMember(); | |
1797 } | |
1798 | |
1799 int FuncDeclaration::isDllMain() | |
1800 { | |
1801 return ident == Id::DllMain && | |
1802 linkage != LINKc && !isMember(); | |
1803 } | |
1804 | |
1805 int FuncDeclaration::isExport() | |
1806 { | |
1807 return protection == PROTexport; | |
1808 } | |
1809 | |
1810 int FuncDeclaration::isImportedSymbol() | |
1811 { | |
1812 //printf("isImportedSymbol()\n"); | |
1813 //printf("protection = %d\n", protection); | |
1814 return (protection == PROTexport) && !fbody; | |
1815 } | |
1816 | |
1817 // Determine if function goes into virtual function pointer table | |
1818 | |
1819 int FuncDeclaration::isVirtual() | |
1820 { | |
1821 #if 0 | |
1822 printf("FuncDeclaration::isVirtual(%s)\n", toChars()); | |
1823 printf("%p %d %d %d %d\n", isMember(), isStatic(), protection == PROTprivate, isCtorDeclaration(), linkage != LINKd); | |
1824 printf("result is %d\n", | |
1825 isMember() && | |
1826 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
1827 toParent()->isClassDeclaration()); | |
1828 #endif | |
1829 return isMember() && | |
1830 !(isStatic() || protection == PROTprivate || protection == PROTpackage) && | |
1831 toParent()->isClassDeclaration(); | |
1832 } | |
1833 | |
1834 int FuncDeclaration::isAbstract() | |
1835 { | |
1836 return storage_class & STCabstract; | |
1837 } | |
1838 | |
1839 int FuncDeclaration::isCodeseg() | |
1840 { | |
1841 return TRUE; // functions are always in the code segment | |
1842 } | |
1843 | |
1844 // Determine if function needs | |
1845 // a static frame pointer to its lexically enclosing function | |
1846 | |
1847 int FuncDeclaration::isNested() | |
1848 { | |
1849 //if (!toParent()) | |
1850 //printf("FuncDeclaration::isNested('%s') parent=%p\n", toChars(), parent); | |
1851 //printf("\ttoParent() = '%s'\n", toParent()->toChars()); | |
1852 return ((storage_class & STCstatic) == 0) && | |
1853 (toParent2()->isFuncDeclaration() != NULL); | |
1854 } | |
1855 | |
1856 int FuncDeclaration::needThis() | |
1857 { | |
1858 //printf("FuncDeclaration::needThis() '%s'\n", toChars()); | |
1859 int i = isThis() != NULL; | |
1860 //printf("\t%d\n", i); | |
1861 if (!i && isFuncAliasDeclaration()) | |
1862 i = ((FuncAliasDeclaration *)this)->funcalias->needThis(); | |
1863 return i; | |
1864 } | |
1865 | |
1866 int FuncDeclaration::addPreInvariant() | |
1867 { | |
1868 AggregateDeclaration *ad = isThis(); | |
1869 return (ad && | |
1870 //ad->isClassDeclaration() && | |
1871 global.params.useInvariants && | |
1872 (protection == PROTpublic || protection == PROTexport) && | |
1873 !naked); | |
1874 } | |
1875 | |
1876 int FuncDeclaration::addPostInvariant() | |
1877 { | |
1878 AggregateDeclaration *ad = isThis(); | |
1879 return (ad && | |
1880 ad->inv && | |
1881 //ad->isClassDeclaration() && | |
1882 global.params.useInvariants && | |
1883 (protection == PROTpublic || protection == PROTexport) && | |
1884 !naked); | |
1885 } | |
1886 | |
1887 /********************************** | |
1888 * Generate a FuncDeclaration for a runtime library function. | |
1889 */ | |
1890 | |
1891 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, char *name) | |
1892 { | |
1893 return genCfunc(treturn, Lexer::idPool(name)); | |
1894 } | |
1895 | |
1896 FuncDeclaration *FuncDeclaration::genCfunc(Type *treturn, Identifier *id) | |
1897 { | |
1898 FuncDeclaration *fd; | |
1899 TypeFunction *tf; | |
1900 Dsymbol *s; | |
1901 static DsymbolTable *st = NULL; | |
1902 | |
1903 //printf("genCfunc(name = '%s')\n", id->toChars()); | |
1904 //printf("treturn\n\t"); treturn->print(); | |
1905 | |
1906 // See if already in table | |
1907 if (!st) | |
1908 st = new DsymbolTable(); | |
1909 s = st->lookup(id); | |
1910 if (s) | |
1911 { | |
1912 fd = s->isFuncDeclaration(); | |
1913 assert(fd); | |
1914 assert(fd->type->nextOf()->equals(treturn)); | |
1915 } | |
1916 else | |
1917 { | |
1918 tf = new TypeFunction(NULL, treturn, 0, LINKc); | |
1919 fd = new FuncDeclaration(0, 0, id, STCstatic, tf); | |
1920 fd->protection = PROTpublic; | |
1921 fd->linkage = LINKc; | |
1922 | |
1923 st->insert(fd); | |
1924 } | |
1925 return fd; | |
1926 } | |
1927 | |
1928 char *FuncDeclaration::kind() | |
1929 { | |
1930 return "function"; | |
1931 } | |
1932 | |
1933 /****************************** FuncAliasDeclaration ************************/ | |
1934 | |
1935 // Used as a way to import a set of functions from another scope into this one. | |
1936 | |
1937 FuncAliasDeclaration::FuncAliasDeclaration(FuncDeclaration *funcalias) | |
1938 : FuncDeclaration(funcalias->loc, funcalias->endloc, funcalias->ident, | |
1939 (enum STC)funcalias->storage_class, funcalias->type) | |
1940 { | |
1941 assert(funcalias != this); | |
1942 this->funcalias = funcalias; | |
1943 } | |
1944 | |
1945 char *FuncAliasDeclaration::kind() | |
1946 { | |
1947 return "function alias"; | |
1948 } | |
1949 | |
1950 | |
1951 /****************************** FuncLiteralDeclaration ************************/ | |
1952 | |
1953 FuncLiteralDeclaration::FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, | |
1954 enum TOK tok, ForeachStatement *fes) | |
1955 : FuncDeclaration(loc, endloc, NULL, STCundefined, type) | |
1956 { | |
1957 char *id; | |
1958 | |
1959 if (fes) | |
1960 id = "__foreachbody"; | |
1961 else if (tok == TOKdelegate) | |
1962 id = "__dgliteral"; | |
1963 else | |
1964 id = "__funcliteral"; | |
1965 this->ident = Identifier::generateId(id); | |
1966 this->tok = tok; | |
1967 this->fes = fes; | |
1968 //printf("FuncLiteralDeclaration() id = '%s', type = '%s'\n", this->ident->toChars(), type->toChars()); | |
1969 } | |
1970 | |
1971 Dsymbol *FuncLiteralDeclaration::syntaxCopy(Dsymbol *s) | |
1972 { | |
1973 FuncLiteralDeclaration *f; | |
1974 | |
1975 //printf("FuncLiteralDeclaration::syntaxCopy('%s')\n", toChars()); | |
1976 if (s) | |
1977 f = (FuncLiteralDeclaration *)s; | |
1978 else | |
1979 f = new FuncLiteralDeclaration(loc, endloc, type->syntaxCopy(), tok, fes); | |
1980 FuncDeclaration::syntaxCopy(f); | |
1981 return f; | |
1982 } | |
1983 | |
1984 int FuncLiteralDeclaration::isNested() | |
1985 { | |
1986 //printf("FuncLiteralDeclaration::isNested() '%s'\n", toChars()); | |
1987 return (tok == TOKdelegate); | |
1988 } | |
1989 | |
1990 char *FuncLiteralDeclaration::kind() | |
1991 { | |
1992 // GCC requires the (char*) casts | |
1993 return (tok == TOKdelegate) ? (char*)"delegate" : (char*)"function"; | |
1994 } | |
1995 | |
1996 void FuncLiteralDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1997 { | |
1998 static Identifier *idfunc; | |
1999 static Identifier *iddel; | |
2000 | |
2001 if (!idfunc) | |
2002 idfunc = new Identifier("function", 0); | |
2003 if (!iddel) | |
2004 iddel = new Identifier("delegate", 0); | |
2005 | |
2006 type->toCBuffer(buf, ((tok == TOKdelegate) ? iddel : idfunc), hgs); | |
2007 bodyToCBuffer(buf, hgs); | |
2008 } | |
2009 | |
2010 | |
2011 /********************************* CtorDeclaration ****************************/ | |
2012 | |
2013 CtorDeclaration::CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
2014 : FuncDeclaration(loc, endloc, Id::ctor, STCundefined, NULL) | |
2015 { | |
2016 this->arguments = arguments; | |
2017 this->varargs = varargs; | |
2018 //printf("CtorDeclaration() %s\n", toChars()); | |
2019 } | |
2020 | |
2021 Dsymbol *CtorDeclaration::syntaxCopy(Dsymbol *s) | |
2022 { | |
2023 CtorDeclaration *f; | |
2024 | |
2025 f = new CtorDeclaration(loc, endloc, NULL, varargs); | |
2026 | |
2027 f->outId = outId; | |
2028 f->frequire = frequire ? frequire->syntaxCopy() : NULL; | |
2029 f->fensure = fensure ? fensure->syntaxCopy() : NULL; | |
2030 f->fbody = fbody ? fbody->syntaxCopy() : NULL; | |
2031 assert(!fthrows); // deprecated | |
2032 | |
2033 f->arguments = Argument::arraySyntaxCopy(arguments); | |
2034 return f; | |
2035 } | |
2036 | |
2037 | |
2038 void CtorDeclaration::semantic(Scope *sc) | |
2039 { | |
2040 ClassDeclaration *cd; | |
2041 Type *tret; | |
2042 | |
2043 //printf("CtorDeclaration::semantic()\n"); | |
2044 | |
2045 sc = sc->push(); | |
2046 sc->stc &= ~STCstatic; // not a static constructor | |
2047 | |
2048 parent = sc->parent; | |
2049 Dsymbol *parent = toParent(); | |
2050 cd = parent->isClassDeclaration(); | |
2051 if (!cd) | |
2052 { | |
2053 error("constructors only are for class definitions"); | |
2054 tret = Type::tvoid; | |
2055 } | |
2056 else | |
2057 tret = cd->type; //->referenceTo(); | |
2058 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
2059 | |
2060 sc->flags |= SCOPEctor; | |
2061 type = type->semantic(loc, sc); | |
2062 sc->flags &= ~SCOPEctor; | |
2063 | |
2064 // Append: | |
2065 // return this; | |
2066 // to the function body | |
2067 if (fbody) | |
2068 { Expression *e; | |
2069 Statement *s; | |
2070 | |
2071 e = new ThisExp(0); | |
2072 s = new ReturnStatement(0, e); | |
2073 fbody = new CompoundStatement(0, fbody, s); | |
2074 } | |
2075 | |
2076 FuncDeclaration::semantic(sc); | |
2077 | |
2078 sc->pop(); | |
2079 | |
2080 // See if it's the default constructor | |
2081 if (cd && varargs == 0 && Argument::dim(arguments) == 0) | |
2082 cd->defaultCtor = this; | |
2083 } | |
2084 | |
2085 char *CtorDeclaration::kind() | |
2086 { | |
2087 return "constructor"; | |
2088 } | |
2089 | |
2090 char *CtorDeclaration::toChars() | |
2091 { | |
2092 return "this"; | |
2093 } | |
2094 | |
2095 int CtorDeclaration::isVirtual() | |
2096 { | |
2097 return FALSE; | |
2098 } | |
2099 | |
2100 int CtorDeclaration::addPreInvariant() | |
2101 { | |
2102 return FALSE; | |
2103 } | |
2104 | |
2105 int CtorDeclaration::addPostInvariant() | |
2106 { | |
2107 return (vthis && global.params.useInvariants); | |
2108 } | |
2109 | |
2110 | |
2111 void CtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2112 { | |
2113 buf->writestring("this"); | |
2114 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
2115 bodyToCBuffer(buf, hgs); | |
2116 } | |
2117 | |
2118 /********************************* DtorDeclaration ****************************/ | |
2119 | |
2120 DtorDeclaration::DtorDeclaration(Loc loc, Loc endloc) | |
2121 : FuncDeclaration(loc, endloc, Id::dtor, STCundefined, NULL) | |
2122 { | |
2123 } | |
2124 | |
2125 Dsymbol *DtorDeclaration::syntaxCopy(Dsymbol *s) | |
2126 { | |
2127 DtorDeclaration *dd; | |
2128 | |
2129 assert(!s); | |
2130 dd = new DtorDeclaration(loc, endloc); | |
2131 return FuncDeclaration::syntaxCopy(dd); | |
2132 } | |
2133 | |
2134 | |
2135 void DtorDeclaration::semantic(Scope *sc) | |
2136 { | |
2137 ClassDeclaration *cd; | |
2138 | |
2139 parent = sc->parent; | |
2140 Dsymbol *parent = toParent(); | |
2141 cd = parent->isClassDeclaration(); | |
2142 if (!cd) | |
2143 { | |
2144 error("destructors only are for class definitions"); | |
2145 } | |
2146 else | |
2147 cd->dtors.push(this); | |
2148 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
2149 | |
2150 sc = sc->push(); | |
2151 sc->stc &= ~STCstatic; // not a static destructor | |
2152 sc->linkage = LINKd; | |
2153 | |
2154 FuncDeclaration::semantic(sc); | |
2155 | |
2156 sc->pop(); | |
2157 } | |
2158 | |
2159 int DtorDeclaration::overloadInsert(Dsymbol *s) | |
2160 { | |
2161 return FALSE; // cannot overload destructors | |
2162 } | |
2163 | |
2164 int DtorDeclaration::addPreInvariant() | |
2165 { | |
2166 return (vthis && global.params.useInvariants); | |
2167 } | |
2168 | |
2169 int DtorDeclaration::addPostInvariant() | |
2170 { | |
2171 return FALSE; | |
2172 } | |
2173 | |
2174 int DtorDeclaration::isVirtual() | |
2175 { | |
2176 /* This should be FALSE so that dtor's don't get put into the vtbl[], | |
2177 * but doing so will require recompiling everything. | |
2178 */ | |
2179 #if BREAKABI | |
2180 return FALSE; | |
2181 #else | |
2182 return FuncDeclaration::isVirtual(); | |
2183 #endif | |
2184 } | |
2185 | |
2186 void DtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2187 { | |
2188 if (hgs->hdrgen) | |
2189 return; | |
2190 buf->writestring("~this()"); | |
2191 bodyToCBuffer(buf, hgs); | |
2192 } | |
2193 | |
2194 /********************************* StaticCtorDeclaration ****************************/ | |
2195 | |
2196 StaticCtorDeclaration::StaticCtorDeclaration(Loc loc, Loc endloc) | |
19 | 2197 : FuncDeclaration(loc, endloc, |
2198 Identifier::generateId("_staticCtor"), STCstatic, NULL) | |
1 | 2199 { |
2200 } | |
2201 | |
2202 Dsymbol *StaticCtorDeclaration::syntaxCopy(Dsymbol *s) | |
2203 { | |
2204 StaticCtorDeclaration *scd; | |
2205 | |
2206 assert(!s); | |
2207 scd = new StaticCtorDeclaration(loc, endloc); | |
2208 return FuncDeclaration::syntaxCopy(scd); | |
2209 } | |
2210 | |
2211 | |
2212 void StaticCtorDeclaration::semantic(Scope *sc) | |
2213 { | |
2214 //printf("StaticCtorDeclaration::semantic()\n"); | |
2215 | |
2216 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
2217 | |
2218 FuncDeclaration::semantic(sc); | |
2219 | |
2220 // We're going to need ModuleInfo | |
2221 Module *m = getModule(); | |
2222 if (!m) | |
2223 m = sc->module; | |
2224 if (m) | |
2225 { m->needmoduleinfo = 1; | |
2226 #ifdef IN_GCC | |
2227 m->strictlyneedmoduleinfo = 1; | |
2228 #endif | |
2229 } | |
2230 } | |
2231 | |
2232 AggregateDeclaration *StaticCtorDeclaration::isThis() | |
2233 { | |
2234 return NULL; | |
2235 } | |
2236 | |
2237 int StaticCtorDeclaration::isStaticConstructor() | |
2238 { | |
2239 return TRUE; | |
2240 } | |
2241 | |
2242 int StaticCtorDeclaration::isVirtual() | |
2243 { | |
2244 return FALSE; | |
2245 } | |
2246 | |
2247 int StaticCtorDeclaration::addPreInvariant() | |
2248 { | |
2249 return FALSE; | |
2250 } | |
2251 | |
2252 int StaticCtorDeclaration::addPostInvariant() | |
2253 { | |
2254 return FALSE; | |
2255 } | |
2256 | |
2257 void StaticCtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2258 { | |
2259 if (hgs->hdrgen) | |
35
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
2260 { buf->writestring("static this();\n"); |
1 | 2261 return; |
2262 } | |
2263 buf->writestring("static this()"); | |
2264 bodyToCBuffer(buf, hgs); | |
2265 } | |
2266 | |
2267 /********************************* StaticDtorDeclaration ****************************/ | |
2268 | |
2269 StaticDtorDeclaration::StaticDtorDeclaration(Loc loc, Loc endloc) | |
19 | 2270 : FuncDeclaration(loc, endloc, |
2271 Identifier::generateId("_staticDtor"), STCstatic, NULL) | |
1 | 2272 { |
2273 } | |
2274 | |
2275 Dsymbol *StaticDtorDeclaration::syntaxCopy(Dsymbol *s) | |
2276 { | |
2277 StaticDtorDeclaration *sdd; | |
2278 | |
2279 assert(!s); | |
2280 sdd = new StaticDtorDeclaration(loc, endloc); | |
2281 return FuncDeclaration::syntaxCopy(sdd); | |
2282 } | |
2283 | |
2284 | |
2285 void StaticDtorDeclaration::semantic(Scope *sc) | |
2286 { | |
2287 ClassDeclaration *cd; | |
2288 Type *tret; | |
2289 | |
2290 cd = sc->scopesym->isClassDeclaration(); | |
2291 if (!cd) | |
2292 { | |
2293 } | |
2294 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
2295 | |
2296 FuncDeclaration::semantic(sc); | |
2297 | |
2298 // We're going to need ModuleInfo | |
2299 Module *m = getModule(); | |
2300 if (!m) | |
2301 m = sc->module; | |
2302 if (m) | |
2303 { m->needmoduleinfo = 1; | |
2304 #ifdef IN_GCC | |
2305 m->strictlyneedmoduleinfo = 1; | |
2306 #endif | |
2307 } | |
2308 } | |
2309 | |
2310 AggregateDeclaration *StaticDtorDeclaration::isThis() | |
2311 { | |
2312 return NULL; | |
2313 } | |
2314 | |
2315 int StaticDtorDeclaration::isStaticDestructor() | |
2316 { | |
2317 return TRUE; | |
2318 } | |
2319 | |
2320 int StaticDtorDeclaration::isVirtual() | |
2321 { | |
2322 return FALSE; | |
2323 } | |
2324 | |
2325 int StaticDtorDeclaration::addPreInvariant() | |
2326 { | |
2327 return FALSE; | |
2328 } | |
2329 | |
2330 int StaticDtorDeclaration::addPostInvariant() | |
2331 { | |
2332 return FALSE; | |
2333 } | |
2334 | |
2335 void StaticDtorDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2336 { | |
2337 if (hgs->hdrgen) | |
2338 return; | |
2339 buf->writestring("static ~this()"); | |
2340 bodyToCBuffer(buf, hgs); | |
2341 } | |
2342 | |
2343 /********************************* InvariantDeclaration ****************************/ | |
2344 | |
2345 InvariantDeclaration::InvariantDeclaration(Loc loc, Loc endloc) | |
2346 : FuncDeclaration(loc, endloc, Id::classInvariant, STCundefined, NULL) | |
2347 { | |
2348 } | |
2349 | |
2350 Dsymbol *InvariantDeclaration::syntaxCopy(Dsymbol *s) | |
2351 { | |
2352 InvariantDeclaration *id; | |
2353 | |
2354 assert(!s); | |
2355 id = new InvariantDeclaration(loc, endloc); | |
2356 FuncDeclaration::syntaxCopy(id); | |
2357 return id; | |
2358 } | |
2359 | |
2360 | |
2361 void InvariantDeclaration::semantic(Scope *sc) | |
2362 { | |
2363 AggregateDeclaration *ad; | |
2364 Type *tret; | |
2365 | |
2366 parent = sc->parent; | |
2367 Dsymbol *parent = toParent(); | |
2368 ad = parent->isAggregateDeclaration(); | |
2369 if (!ad) | |
2370 { | |
2371 error("invariants only are for struct/union/class definitions"); | |
2372 return; | |
2373 } | |
2374 else if (ad->inv && ad->inv != this) | |
2375 { | |
2376 error("more than one invariant for %s", ad->toChars()); | |
2377 } | |
2378 ad->inv = this; | |
2379 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
2380 | |
2381 sc = sc->push(); | |
2382 sc->stc &= ~STCstatic; // not a static invariant | |
2383 sc->incontract++; | |
2384 sc->linkage = LINKd; | |
2385 | |
2386 FuncDeclaration::semantic(sc); | |
2387 | |
2388 sc->pop(); | |
2389 } | |
2390 | |
2391 int InvariantDeclaration::isVirtual() | |
2392 { | |
2393 return FALSE; | |
2394 } | |
2395 | |
2396 int InvariantDeclaration::addPreInvariant() | |
2397 { | |
2398 return FALSE; | |
2399 } | |
2400 | |
2401 int InvariantDeclaration::addPostInvariant() | |
2402 { | |
2403 return FALSE; | |
2404 } | |
2405 | |
2406 void InvariantDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2407 { | |
2408 if (hgs->hdrgen) | |
2409 return; | |
2410 buf->writestring("invariant"); | |
2411 bodyToCBuffer(buf, hgs); | |
2412 } | |
2413 | |
2414 | |
2415 /********************************* UnitTestDeclaration ****************************/ | |
2416 | |
2417 /******************************* | |
2418 * Generate unique unittest function Id so we can have multiple | |
2419 * instances per module. | |
2420 */ | |
2421 | |
2422 static Identifier *unitTestId() | |
2423 { | |
2424 static int n; | |
2425 char buffer[10 + sizeof(n)*3 + 1]; | |
2426 | |
2427 sprintf(buffer,"__unittest%d", n); | |
2428 n++; | |
2429 return Lexer::idPool(buffer); | |
2430 } | |
2431 | |
2432 UnitTestDeclaration::UnitTestDeclaration(Loc loc, Loc endloc) | |
2433 : FuncDeclaration(loc, endloc, unitTestId(), STCundefined, NULL) | |
2434 { | |
2435 } | |
2436 | |
2437 Dsymbol *UnitTestDeclaration::syntaxCopy(Dsymbol *s) | |
2438 { | |
2439 UnitTestDeclaration *utd; | |
2440 | |
2441 assert(!s); | |
2442 utd = new UnitTestDeclaration(loc, endloc); | |
2443 return FuncDeclaration::syntaxCopy(utd); | |
2444 } | |
2445 | |
2446 | |
2447 void UnitTestDeclaration::semantic(Scope *sc) | |
2448 { | |
2449 if (global.params.useUnitTests) | |
2450 { | |
2451 Type *tret; | |
2452 | |
2453 type = new TypeFunction(NULL, Type::tvoid, FALSE, LINKd); | |
2454 FuncDeclaration::semantic(sc); | |
2455 } | |
2456 | |
2457 // We're going to need ModuleInfo even if the unit tests are not | |
2458 // compiled in, because other modules may import this module and refer | |
2459 // to this ModuleInfo. | |
2460 Module *m = getModule(); | |
2461 if (!m) | |
2462 m = sc->module; | |
2463 if (m) | |
2464 m->needmoduleinfo = 1; | |
2465 } | |
2466 | |
2467 AggregateDeclaration *UnitTestDeclaration::isThis() | |
2468 { | |
2469 return NULL; | |
2470 } | |
2471 | |
2472 int UnitTestDeclaration::isVirtual() | |
2473 { | |
2474 return FALSE; | |
2475 } | |
2476 | |
2477 int UnitTestDeclaration::addPreInvariant() | |
2478 { | |
2479 return FALSE; | |
2480 } | |
2481 | |
2482 int UnitTestDeclaration::addPostInvariant() | |
2483 { | |
2484 return FALSE; | |
2485 } | |
2486 | |
2487 void UnitTestDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2488 { | |
2489 if (hgs->hdrgen) | |
2490 return; | |
2491 buf->writestring("unittest"); | |
2492 bodyToCBuffer(buf, hgs); | |
2493 } | |
2494 | |
2495 /********************************* NewDeclaration ****************************/ | |
2496 | |
2497 NewDeclaration::NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs) | |
2498 : FuncDeclaration(loc, endloc, Id::classNew, STCstatic, NULL) | |
2499 { | |
2500 this->arguments = arguments; | |
2501 this->varargs = varargs; | |
2502 } | |
2503 | |
2504 Dsymbol *NewDeclaration::syntaxCopy(Dsymbol *s) | |
2505 { | |
2506 NewDeclaration *f; | |
2507 | |
2508 f = new NewDeclaration(loc, endloc, NULL, varargs); | |
2509 | |
2510 FuncDeclaration::syntaxCopy(f); | |
2511 | |
2512 f->arguments = Argument::arraySyntaxCopy(arguments); | |
2513 | |
2514 return f; | |
2515 } | |
2516 | |
2517 | |
2518 void NewDeclaration::semantic(Scope *sc) | |
2519 { | |
2520 ClassDeclaration *cd; | |
2521 Type *tret; | |
2522 | |
2523 //printf("NewDeclaration::semantic()\n"); | |
2524 | |
2525 parent = sc->parent; | |
2526 Dsymbol *parent = toParent(); | |
2527 cd = parent->isClassDeclaration(); | |
2528 if (!cd && !parent->isStructDeclaration()) | |
2529 { | |
2530 error("new allocators only are for class or struct definitions"); | |
2531 } | |
2532 tret = Type::tvoid->pointerTo(); | |
2533 type = new TypeFunction(arguments, tret, varargs, LINKd); | |
2534 | |
2535 type = type->semantic(loc, sc); | |
2536 assert(type->ty == Tfunction); | |
2537 | |
2538 // Check that there is at least one argument of type uint | |
2539 TypeFunction *tf = (TypeFunction *)type; | |
2540 if (Argument::dim(tf->parameters) < 1) | |
2541 { | |
2542 error("at least one argument of type uint expected"); | |
2543 } | |
2544 else | |
2545 { | |
2546 Argument *a = Argument::getNth(tf->parameters, 0); | |
2547 if (!a->type->equals(Type::tuns32)) | |
2548 error("first argument must be type uint, not %s", a->type->toChars()); | |
2549 } | |
2550 | |
2551 FuncDeclaration::semantic(sc); | |
2552 } | |
2553 | |
2554 char *NewDeclaration::kind() | |
2555 { | |
2556 return "allocator"; | |
2557 } | |
2558 | |
2559 int NewDeclaration::isVirtual() | |
2560 { | |
2561 return FALSE; | |
2562 } | |
2563 | |
2564 int NewDeclaration::addPreInvariant() | |
2565 { | |
2566 return FALSE; | |
2567 } | |
2568 | |
2569 int NewDeclaration::addPostInvariant() | |
2570 { | |
2571 return FALSE; | |
2572 } | |
2573 | |
2574 void NewDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2575 { | |
2576 buf->writestring("new"); | |
2577 Argument::argsToCBuffer(buf, hgs, arguments, varargs); | |
2578 bodyToCBuffer(buf, hgs); | |
2579 } | |
2580 | |
2581 | |
2582 /********************************* DeleteDeclaration ****************************/ | |
2583 | |
2584 DeleteDeclaration::DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments) | |
2585 : FuncDeclaration(loc, endloc, Id::classDelete, STCstatic, NULL) | |
2586 { | |
2587 this->arguments = arguments; | |
2588 } | |
2589 | |
2590 Dsymbol *DeleteDeclaration::syntaxCopy(Dsymbol *s) | |
2591 { | |
2592 DeleteDeclaration *f; | |
2593 | |
2594 f = new DeleteDeclaration(loc, endloc, NULL); | |
2595 | |
2596 FuncDeclaration::syntaxCopy(f); | |
2597 | |
2598 f->arguments = Argument::arraySyntaxCopy(arguments); | |
2599 | |
2600 return f; | |
2601 } | |
2602 | |
2603 | |
2604 void DeleteDeclaration::semantic(Scope *sc) | |
2605 { | |
2606 ClassDeclaration *cd; | |
2607 | |
2608 //printf("DeleteDeclaration::semantic()\n"); | |
2609 | |
2610 parent = sc->parent; | |
2611 Dsymbol *parent = toParent(); | |
2612 cd = parent->isClassDeclaration(); | |
2613 if (!cd && !parent->isStructDeclaration()) | |
2614 { | |
2615 error("new allocators only are for class or struct definitions"); | |
2616 } | |
2617 type = new TypeFunction(arguments, Type::tvoid, 0, LINKd); | |
2618 | |
2619 type = type->semantic(loc, sc); | |
2620 assert(type->ty == Tfunction); | |
2621 | |
2622 // Check that there is only one argument of type void* | |
2623 TypeFunction *tf = (TypeFunction *)type; | |
2624 if (Argument::dim(tf->parameters) != 1) | |
2625 { | |
2626 error("one argument of type void* expected"); | |
2627 } | |
2628 else | |
2629 { | |
2630 Argument *a = Argument::getNth(tf->parameters, 0); | |
2631 if (!a->type->equals(Type::tvoid->pointerTo())) | |
2632 error("one argument of type void* expected, not %s", a->type->toChars()); | |
2633 } | |
2634 | |
2635 FuncDeclaration::semantic(sc); | |
2636 } | |
2637 | |
2638 char *DeleteDeclaration::kind() | |
2639 { | |
2640 return "deallocator"; | |
2641 } | |
2642 | |
2643 int DeleteDeclaration::isDelete() | |
2644 { | |
2645 return TRUE; | |
2646 } | |
2647 | |
2648 int DeleteDeclaration::isVirtual() | |
2649 { | |
2650 return FALSE; | |
2651 } | |
2652 | |
2653 int DeleteDeclaration::addPreInvariant() | |
2654 { | |
2655 return FALSE; | |
2656 } | |
2657 | |
2658 int DeleteDeclaration::addPostInvariant() | |
2659 { | |
2660 return FALSE; | |
2661 } | |
2662 | |
2663 void DeleteDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2664 { | |
2665 buf->writestring("delete"); | |
2666 Argument::argsToCBuffer(buf, hgs, arguments, 0); | |
2667 bodyToCBuffer(buf, hgs); | |
2668 } | |
2669 | |
2670 | |
2671 | |
2672 |